Tag Archives: primate

Open Letter to the Australian Senate regarding a proposed bill to ban the import of primates

The following letter has been sent to the Committee Secretary of the Senate Standing Committees on Environment and Communications regarding the Environment Protection and Biodiversity Conservation Amendment (Prohibition of Live Imports of Primates for Research) Bill 2015. This proposed bill would ban the Australian research community from importing primates for use in biomedical research. The following is a segment of the proposed amendment:

Australian Bill

We encourage the scientific community to leave comments of support for our letter in the comment section below.

Dear Committee Secretary,

Nonhuman primate research has played an important role in many medical breakthroughs, from the polio vaccine to the development of life support systems for premature babies.

Studies with nonhuman primates are a small fraction of basic, behavioural, and biomedical research; however, they are critical to scientific research that seeks to address health issues of grave concern to the public. Nonhuman primate research includes studies relevant to understanding, preventing, and treating a range of diseases including, Alzheimer’s, Parkinson’s, stroke, HIV/AIDS, hepatitis, anaemia and a multitude of mental health conditions.

Thanks to research on primates:

  • Polio has been eradicated from Australia, saving tens of thousands of children from crippling disability
  • Thousands of Australians have had Deep Brain Stimulation to alleviate the symptoms of Parkinson’s
  • Over 20,000 HIV positive Australians can live a relatively normal life thanks to the development of antiretrovirals
  • Australian children can be vaccinated against Hepatitis B, diphtheria, measles, mumps and rubella

Measures to constrain nonhuman primate research in Australia puts future medical breakthroughs in jeopardy.

Australian law already bans the use of wild caught nonhuman primates for research (as does the EU). Such laws should continue to be actively enforced to uphold animal welfare standards, but importantly, should not be expanded to prevent important nonhuman primate research being conducted.

Preventing researchers from importing nonhuman primates could prevent scientists from responding to public health issues or new areas of biomedical research in Australia and beyond. The domestic supply of nonhuman primates may be able to provide for most of the needs of the scientific community, but also risks constraining it. Any future Australian research would be limited to species of monkeys currently bred in Australia’s three breeding colonies, effectively restricting the animal models available to the biomedical community.

Research conducted with nonhuman primates is strictly regulated. All research must be approved by Animal Ethics Committees, who apply the 3 Rs framework to ensure that animal studies are Replaced wherever there is a non-animal alternative, Refined to ensure animal suffering is minimised, and Reduced to ensure that as few animals are used as is necessary to produce scientifically viable results. Animal welfare remains a high priority for the scientific community – with animal care personnel and veterinary staff providing round-the-clock care for their wards.

Yours faithfully,

Speaking of Research

Inês Albuquerque
Jeremy Bailoo, Ph.D
Prof Mark G Baxter
Prof Allyson Bennett
Paul Browne, Ph.D
James Champion
Paula Clifford
Amanda M. Dettmer, Ph.D
Prof Doris Doudet
Jazzminn Hembree RLATG
Tom Holder
Prof J. David Jentsch
Juan Carlos Marvizon, Ph.D
Kimberley Phillips Ph.D
Prof Dario Ringach
Simon R Schultz, DPhil

One step closer to a vaccine for cytomegalovirus: Monkeys transmit CMV the same way as humans

Today’s guest post is by Jordana Lenon, Wisconsin National Primate Research Center and Kathy West, California National Primate Research Center.

PregnantWomanResearchers at Duke and Tulane take the lead, the National Primate Research Centers provide critical resources and expertise in this first-ever proof of CMV placental transmission in nonhuman primates.

Researchers now have a powerful new model for working on a vaccine for cytomegalovirus, or CMV, which is the leading infectious cause of birth defects worldwide.

Now, for the first time, a nonhuman primate CMV has been demonstrated to be congenitally transmitted similar to congenital HCMV infection. The discovery was published this week in the high impact journal Proceedings of the National Academy of Sciences and reported in The New York Times and Science Daily, among other news outlets.

Rhesus macaque mothers can transmit CMV across their placentas to their unborn infants, discovered the teams of co-senior study authors Sallie R. Permar, M.D., Ph.D., Duke University, and Amitinder Kaur, M.D., Tulane University. The lead author was Kristy Bialas, a post-doctoral fellow at the Duke Human Vaccine Institute.

Rhesus monkeys at the California National Primate Research Center. Photo credit: Kathy West

Rhesus monkeys at the California National Primate Research Center. Photo credit: Kathy West

The finding establishes the first nonhuman primate research model for CMV transmission via the placenta. The macaque reproductive, developmental, and immunological systems are highly analogous to those of humans. Thus, scientists can now utilize the biologically relevant RhCMV system in a controlled scientific setting to try to find new pathways towards an HCMV vaccine.

“A huge impediment to CMV vaccine development has been our lack of ability to determine what immune responses would be needed to protect against mother-to-fetus transmission,” said Permar, of the Duke Human Vaccine Institute in a Duke Medicine news release Oct. 19.

“It means that we can now use this model to ask questions about protective immunity against congenital CMV and actually study this disease for which a vaccine is urgently needed,” said co-senior author Kaur, of the Tulane National Primate Research Center in a Tulane University release Oct. 19.

The rhesus monkey model for HCMV persistence and pathogenesis has been developed over the past 30 years by co-author Peter Barry, Ph.D., California National Primate Research Center (CNPRC) core scientist, and co-developer of the rhesus intrauterine pathogenesis model with Alice Tarantal, Ph.D., CNPRC core scientist. Barry has recently shown that there is a strong immune response in rhesus monkeys to a potentially paradigm-shifting approach to HCMV vaccine design, and contributed important expertise and resources to this current research.

CNPRCrhesus,K_WestUCD, 4

Rhesus monkeys at the California National Primate Research Center. Photo credit: Kathy West

The work highlights the collaboration of Duke University researchers with experts in rhesus immunology and virology at the National Institutes of Health National Primate Research Centers. Contributing authors also included David O’Connor, Ph.D., and Michael Lauck, Ph.D., experts in macaque virology, pathology and genetics at the Wisconsin National Primate Research Center, Xavier Alvarez, Ph.D., at the Tulane National Primate Research Center, and Takayuki Tanaka, D.V.M., Harvard Medical School and the New England National Primate Research Center, which provided macaques for the study. Additional authors’ contributions are included in the Duke news release.

The research was funded by National Institutes of Health (NIH) Office of the Director, NIH National Cancer Institute, NIH National Institute of Allergy and Infectious Diseases, NIH Eunice Kennedy Shriver National Institute of Child Health and Human Development, and the Derfner Children’s Miracle Network Research Grant.

Reference:

Kristy M. Bialas et al. “Maternal CD4+ T cells protect against severe congenital cytomegalovirus disease in a novel nonhuman primate model of placental cytomegalovirus transmission” Proc Natl Acad Sci U S A. 2015 Oct 19. http://dx.doi.org/10.1073/pnas.1511526112

American Society of Primatologists’ statement of support for NIH primate research

The nation’s largest primatological scientific society, the American Society of Primalogists (ASP), has posted a strong statement sent January 21 in support for the scientist and research under attack by PETA.  The statement can be found on ASP’s website: https://www.asp.org/index.cfm

ASP home page Jan 2015

In its entirety, the letter reads:

“Members of the Board of Directors of the American Society of Primatologists would like to add our comments to the discussion of the validity and effectiveness of non-human primate research as it pertains to human behavior and medicine. Non-human primate research (on monkeys and apes) has had widespread effect on improving the diagnosis and treatment of many adult and childhood diseases. Studies that have employed the judicious use of non-human primates as models for human illness have improved our understanding of such disorders as autism, childhood leukemia, cerebral palsy, and mental health.1 The long-term research of one scientist, Dr. Stephen Suomi, has been called into question as a result of inaccurate, misguided and inflammatory media accounts. Our comments will address Dr. Suomi’s work and the value of non-human primates in understanding human biology, illness and behavior.

Dr. Suomi’s research has focused on the influence of variable environments and genetics on infant development, and by extension variation in adult behavior2. He and his colleagues found that early changes in the degree of attachment between mother and infant have real biological, not only behavioral influences on adult social behavior3. If this finding seems intuitive, it is evidence that the benefits of research have permeated not only the scientific, but also mainstream media4 and literature. Infant subjects are either mother-reared or reared in same-aged groups of monkeys. Infants may undergo temporary isolation during the study5 to facilitate comparison among groups that are reared differently. The goal of much of this research is to mimic separation that every social animal, including humans, undergo during their lifetimes and to understand why individuals respond differently to separation. One such research focus is the development of risk factors leading to mental illness in humans.

The American Society of Primatologists supports research on non-human primates that is carefully designed and employs rigorous research protocols. Dr. Suomi’s research and consistent funding by the NIH attests to his adherence to prescribed protocols and regulations.

Before research can begin, proposals are thoroughly vetted by both their institutional ethical oversight board (in the United States these are called Institutional Animal Care and Use Committees or IACUCs) and by the review boards of granting agencies (e.g., NIH, NIMH, NSF). This very extensive process requires prospective researchers to respond to questions such as those raised in your letter, e.g., your concern about redundant research. Per both the Animal Welfare Act and Regulations (AWARs) and the Public Health Service Policy on the Humane Care and Use of Laboratory Animals (PHS Policy), research funded by federal and state governments, as well as private foundations, must demonstrate that the project they propose will advance knowledge in the field, be relevant to human biology or behavior, and will not duplicate the efforts of previous research. The number of animals used in experiments must also be justified as well as the conditions in which the animals are housed, the duration of the project, and the protocols implemented during experiments. The scientists employed by the NIH have been leaders in the development of safe, effective, and reliable research protocols whether the research is done on mice or monkeys.

Because of the close genetic relationship between humans and non-human primates, monkeys are important models for studying particular biological phenomena, including the research conduct by Dr. Suomi. Nevertheless, non-human primates are rare in laboratory populations making up < 1% of the laboratory animals used in research (Government statistics from 2010, cited in Phillips et al., 20146). Furthermore, species are carefully matched to proposed studies.

We appreciate your attention to this matter, and ask that you please send us a response letting us know the charge to the NIH Bioethics Review Board.

Respectfully submitted,
Marilyn A. Norconk, President; Justin A. McNulty, Executive Secretary; Kimberley A. Phillips,  President-Elect; Corinna N. Ross, Treasurer; Karen L. Bales, Past-President

 

Child health benefits from studies of infant monkeys – Part 1

Health research with nonhuman primates takes place at many universities and research institutions in the US, among them centers funded by the National Institutes of Health (NIH).  A broad range of research aimed at better understanding maternal and child health takes place at these centers and depends, in part, upon humane, ethical scientific studies of infant monkeys.

A sample of the research areas and findings are highlighted below and provide a view of the value of developmental research. What even a short list shows is that the scope of scientific and medical research that informs pediatric health issues is large. It ranges from autism to childhood diabetes to leukemia to mental health to stem cell therapies.

Together, the findings from studies of infant monkeys have resulted in a better understanding of prenatal, infant, child, and maternal health. The scientific research has resulted in basic discoveries that are the foundation for a wide range of clinical applications and have also improved outcomes for premature and critically ill human infants.

Infant rhesus monkeys playing in nursery.  Wisconsin National Primate Research Center. @2014 University of Wisconsin Board of Regents

Infant rhesus monkeys playing in nursery. Wisconsin National Primate Research Center. @2014 University of Wisconsin Board of Regents

Studies of monkeys are a tiny fraction of all animal studies and are only conducted when studies of fish, mice, rats, or other animals are not sufficient to address the scientific question. Like all nonhuman animal studies, those of young monkeys are subject to rigorous ethical evaluation by scientists, by federal review panels, and institutional review boards that include veterinarians and members of the public.

The decision to conduct a study in nonhuman animals is one that rests on weighing both the potential benefit the work may provide and any potential for harm. The research below provides many specific examples of how and why the studies are conducted and their benefit. For each and every study, scientists, review panels, and ethics boards also consider the potential for harm that may result to the nonhuman animals that are involved. Whether there are any alternatives to the animal study is a requirement of the US system for ethical review and oversight. If there is no alternative, reduction in potential for harm is explicitly addressed not only by a set of standards for animal care, housing, handling, environmental enrichment, and medical care, but also by including only the number of animals needed to answer the scientific question. (You can read more about the review process, regulation, and care standards here and here).

Like other studies of nonhuman animals, those in young animals require serious and fact-informed ethical consideration. At the most fundamental level they challenge us to evaluate how we should balance work that ultimately can help children, the harm that may result from a failure to act, potential harm to animals in research. Consideration of how to balance the interests of children, society, and other animals is not an easy task. Nor is it one that is well-served by simple formulations.

Primate studies of early development have, and continue, to contribute valuable new insights and discoveries that improve the health and lives of many.  The examples below, from NIH-funded research programs across the US, demonstrate how the work contributes to public health.

Sources:  National Primate Research Centers Outreach Consortium. For more information about the NPRCs, see:  http://dpcpsi.nih.gov/orip/cm/primate_resources_researchers#centers

EXAMPLES OF PEDIATRIC RESEARCH WITH MONKEYS

Autism

  • In a major advance, California National Primate Research Center (CNPRC) research defined a link between maternal auto-antibodies and increased risk of a child having autism (http://www.cnprc.ucdavis.edu/maternal-antibodies-linked-to-autism/)
  • Research at the CNPRC has focused on oxytocin and vasopressin in social bonding and male parental care, as well as on the effects of early experiences on the development of these behaviors. Studies have begun on the long-term effects of oxytocin; a new treatment is already being used in children with autism without an understanding of the long-term effects. (http://www.cnprc.ucdavis.edu/unknown-effects-of-long-term-oxytocin-use-in-children/)
  • Using an innovative approach to imaging the brain, scientists at the CNPRC have significantly enhanced our understanding of the etiology of autism by mapping the location of receptors for oxytocin, a hormone that is linked with social behavior. http://www.cnprc.ucdavis.edu/improving-models-to-understand-the-etiology-of-autism/
  • CNPRC scientists have shown that monkeys exposed to a maternal mock infection in utero exhibit signs of inflammation within the brain four years later, which is a response that is similar to that observed in human patients with schizophrenia and autism.  Nonhuman primate models are essential for understanding the effects of maternal inflammation during pregnancy, as they provide critical information on individual susceptibility and vulnerability of specific gestational time points. http://www.cnprc.ucdavis.edu/mothers-immunity-linked-to-brain-inflammation/

Cerebral Palsy

  • One outcome of premature birth and accompanying brain injury can be Cerebral Palsy (CP). To date, studies at the Washington National Primate Research Center’s (WaNPRC) Infant Primate Research Laboratory (IPRL) have described the metabolome of normal birth and discovered new acute biomarkers of acute hypoxia‐ This multi‐modal approach will increase the likelihood of identifying reliable biomarkers to diagnose the degree of injury and improve prognosis by tracking the response to treatment after neonatal brain injury. (http://www.ncbi.nlm.nih.gov/pubmed/22391633, http://www.ncbi.nlm.nih.gov/pubmed/21353677)

Childhood Leukemia

  • Wisconsin National Primate Research Center (WNPRC) scientists James Thomson and Igor Slukvin turned diseased cells from a leukemia patient into pluripotent stem cells, providing a way to study the genetic origins of blood cancers as well as the ability to grow unlimited cells for testing new drugs for chronic myeloid leukemia, childhood leukemia and other blood cancers. (http://www.news.wisc.edu/18933 and http://www.ncbi.nlm.nih.gov/pubmed/21296996)

Diabetes and Childhood Obesity

  • Normal and obese marmosets were followed by Suzette Tardif at the Southwest National Primate Research Center (SNPRC) from birth to 1 year. At 6 months, obese marmosets already had significantly lower insulin sensitivity and by 12 months, they also had higher fasting glucose, demonstrating that early-onset obesity in marmosets resulted in impaired glucose function, increasing diabetes risk. (http://www.ncbi.nlm.nih.gov/pubmed/23512966)
  • Infant marmosets were followed by Suzette Tardif at the SNPRC from birth to 1 year. Feeding phenotypes were determined through the use of behavioral observation, solid food intake trials, and liquid feeding trials. Marmosets found to be obese at 12 months of age started consuming solid food sooner and drank more grams of diet thus indicating that the weaning process is crucial in the development of juvenile obesity in both NHPs and human. (http://www.ncbi.nlm.nih.gov/pubmed/23512878)

Diet

Environmental threats

HIV/AIDS

  • Scientists at the CNPRC developed the SIV/rhesus macaque pediatric model of disease, to better understand the pathogenesis of SIV/HIV in neonates and test strategies for immunoprophylaxis and antiviral therapy to prevent infection or slow disease progression. Drug therapies used to prevent the transmission of HIV from mother to infant were developed in nonhuman primate models at the CNPRC, and are now being successfully used in many human populations to protect millions of infants from contracting HIV. (http://www.cnprc.ucdavis.edu/koen-van-rompay/)
  • Development of topical vaginal microbicides to prevent babies from contracting HIV from their mothers during delivery was advanced by Eva Rakasz at the WNPRC and her collaborators. Dr. Rakasz was also a member of the National Institutes of Health study section, Sexually Transmitted Infections and Topical Microbicides Clinical Research Centers. (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3032991/, http://www.who.int/hiv/topics/microbicides/microbicides/en/)
  • In a model of mother to child transmission, research at the WaNPRC and the ONPRC has shown that neutralizing antibodies can block infection at high doses and prevent disease and death at lower doses in one-month old monkeys exposed to a chimeric SIV that bears the HIV Envelope protein. Human monoclonal antibodies currently in clinical trials are in testing alone and in combination with drug therapy in this primate model as a less toxic alternative to supplement or supplant drugs in newborns. (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2952052/, http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3807376/)
  • In women who are HIV positive, prenatal consumption of AZT is useful for reducing the risk that the unborn fetus will contract HIV. Research done at the WaNPRC IPRL demonstrated that the effects of AZT on maternal reproduction and infant development were minimal and at the doses studied, no significant adverse health effects from prenatal exposure to AZT were predicted for pregnant women. (http://www.ncbi.nlm.nih.gov/pubmed/23873400, http://www.ncbi.nlm.nih.gov/pubmed/8301525)
  • A goal of Yerkes National Primate Research Center (YNPRC) infectious disease researchers is to identify the sources of the latent HIV reservoir so targeted cure strategies can be developed. A first step is to develop a novel model of SIV infection and cART treatment of nonhuman primate (NHP) infants to interrogate the SIV reservoir. The development of such a model will greatly facilitate future studies of SIV reservoirs and the design and testing of novel reservoir-directed therapeutic strategies before scaling to clinical trials in HIV-infected patients.
  • YNPRC infectious disease researchers found the percentage of CD4+CCR5+ T cells was significantly lower in all tissues in infant sooty mangabeys (SMs) as compared to infant rhesus macaques (RMs) despite robust levels of CD4+ T cell proliferation in both species. The researchers propose that limited availability of SIV target cells in infant SMs represents a key evolutionary adaptation to reduce the risk of mother-to-infant transmission (MTIT) in SIV-infected SMs. The researchers are applying their findings toward reducing the more than 300,000 cases diagnosed in children each year. (http://www.plospathogens.org/article/info%3Adoi%2F10.1371%2Fjournal.ppat.1003958)

Huntington’s Disease

  • YNPRC researchers have successfully created a transgenic, preclinical animal model of Huntington’s disease (HD). These animals, when followed from infancy to adulthood, show progressive motor and cognitive associated with neural changes similar with the disease patterns seen in humans. Not having such a model has been a major roadblock to developing effective therapies for the disease.
    (http//www.ncbi.nlm.nih.gov/pubmed/18488016; http//www.ncbi.nlm.nih.gov/pubmed/24581271)

Lung Development and Function

  • CNPRC research discovered a link between an infant’s temperament and asthma– research is leading towards the screening, prediction and prevention of lung disease in children. (http://www.ncbi.nlm.nih.gov/pubmed/21536834)
  • Research at the CNPRC has shown that exposure to high levels of fine particle pollution (e.g. wildfire smoke) adversely affects both development of the immune system and lung function(http://www.cnprc.ucdavis.edu/long-term-impact-of-air-pollutants/)
  • Childhood asthma research by the CNPRC focuses on understanding why children are highly susceptible to asthma, with the goal of identifying predictive biomarkers and discovering preventive treatments. These studies use a novel rhesus monkey model of house dust mite sensitization to investigate the pathogenesis of allergic asthma in pediatric and adult asthma. The goal is to define the relationship between pediatric asthma, development of mucosal immunity in the respiratory system, and exposure to the house dust mite allergen. (http://www.ncbi.nlm.nih.gov/pubmed/21819959)
  • Eliot Spindel at the ONPRC has shown that large doses of Vitamin C can protect developing lungs from the damage caused when mothers smoke. This work has been duplicated in clinical trials. (http://www.ncbi.nlm.nih.gov/pubmed/15709053)

Kidney Disease, Organ Transplants, Lupus

  • WNPRC scientists and surgeons at UW Hospital successfully tested a new compound, mycophenolate mofetil, in combination with other drugs in monkeys and other animals, and then in human patients in the 1990s. Their work has saved the lives of patients needing kidney or other organ transplants. These new therapies have also kept patients with chronic kidney diseases, including lupus nephritis, which strikes many children and teens, from needing transplants. (Hans Sollinger, Folkert Belzer, Stuart Knechtle, others.) (http://www.ncbi.nlm.nih.gov/pubmed/8680054, http://www.ncbi.nlm.nih.gov/pubmed/9706169, http://www.ncbi.nlm.nih.gov/pubmed/8821838


Memory Impairment

Polycystic Ovary Syndrome

Puberty Disorders

Prenatal and Mental health

  • Studies at the WaNPRC IPRL have provided important and therapeutically relevant information on the fetal risk associated with maternal exposure to antiseizure medication in infants born to women who have epilepsy (Phillips & Lockard, 1985, 1993). (http://www.ncbi.nlm.nih.gov/pubmed/23873400)
  • Human and animal studies at the SNPRC revealed that the intrauterine environment can predispose offspring to disease in later life. Mark Nijland showed that maternal obesity can program offspring for cardiovascular disease (CVD), diabetes and obesity. This study revealed significant changes in cardiac miRNA expression (known to be affected in human cardiovascular disease) and developmental disorders in the fetuses of obese baboons. (http://www.ncbi.nlm.nih.gov/pubmed/23922128)
  • At the CNPRC a new vaccine strategy against HCMV, the “birth defect virus”, has been shown to produce a strong immune response with the potential to prevent a viral infection that causes 5,000 babies yearly to be born with congenital neurological deficits. http://www.cnprc.ucdavis.edu/vaccine-against-hcmv-the-birth-defect-virus-produces-a-strong-immune-response/
  • Studies in the WaNPRC IPRL have demonstrated that prenatal exposure to relatively high levels of ethanol (alcohol) was associated with significant changes in the structure of the fetal brain. (http://www.ncbi.nlm.nih.gov/pubmed/23873400)
  • Recent findings from nonhuman primates studied by Ned Kalin at the WNPRC suggest that an overactive core circuit in the brain, and its interaction with other specialized circuits, accounts for the variability in symptoms shown by patients with severe anxiety. The ability to identify brain mechanisms underlying the risk during childhood for developing anxiety and depression is critical for establishing novel early-life interventions aimed at preventing the chronic and debilitating outcomes associated with these common illnesses. (http://www.ncbi.nlm.nih.gov/pubmed/23538303, http://www.ncbi.nlm.nih.gov/pubmed/23071305)
  • Developmental studies with nonhuman primates at the YNPRC have revealed that neonatal dysfunction of the amygdala, a key brain structure, has long-lasting effects on the typical development of brain circuits that regulate behavioral and neuroendocrine stress, resulting in long-term hyperactivity.  These findings may provide clues on the neural source of HPA axis dysregulation found in autism spectrum disorder, schizophrenia and affective disorders.  (http://www.ncbi.nlm.nih.gov/pubmed/23159012, http://www.ncbi.nlm.nih.gov/pubmed/24986273, http://www.ncbi.nlm.nih.gov/pubmed/25143624)

Preterm Birth and Neonatal Outcomes

  • Current research at the ONPRC incorporates studies directed at understanding the mechanisms of parturition, with emphasis on therapeutic interventions for preterm labor associated with reproductive tract infections and the prevention of subsequent adverse neonatal outcomes. Intra-amniotic infection by genital Ureaplasma species is a predominant cause of early preterm birth. Preterm infants often have life-long health complications including chronic lung injury, often leading to asthma and neurodevelopmental disabilities such as cerebral palsy. Research by ONPRC’s Dr. Grigsby has shown that administration of a specific macrolide antibiotic delays preterm birth and reduces the severity of fetal lung injury and most importantly central nervous system injury. Recently Dr. Grigsby has expanded the infant care facilities at the ONPRC with the addition of a specialized intensive care nursery (SCN); this has enabled new research initiatives to expand beyond the maternal-fetal environment to a critical translation point between prenatal and postnatal life. This one-of-a-kind nursery has the look and feel of a human neonatal intensive care unit and supports the cardiopulmonary, (including mechanical ventilation), thermoregulatory, and nutritional needs of prematurely born infants. (http://www.ncbi.nlm.nih.gov/pubmed/23111115, http://www.ncbi.nlm.nih.gov/pubmed/24179112)
  •  CNPRC investigations into potential effects of long-term binge drinking episodes on later pregnancies in primates demonstrate that binge-levels of alcohol were associated with reduced embryo development, changes in the oocyte and cumulus cell gene expression, and an increase in spontaneous abortion during very early gestation, even after alcohol consumption had ceased. http://www.cnprc.ucdavis.edu/binge-drinking-implications-for-human-health/
  •  A powerful new imaging technique has been developed at the CNPRC that could vastly improve the success of Assisted Reproductive Technologies, including IVF, by increasing the ability to predict which embryos stand the highest chance of continuing to develop normally.http://www.cnprc.ucdavis.edu/predicting-embryo-success-with-in-vitro-fertilization/
  •  Research at the CNPRC has shown a link between sugar consumption in healthy females and disrupted oocyte maturation and in vitro pre-implantation embryo in healthy animals. http://www.cnprc.ucdavis.edu/donec-at-mauris-enim-duis-nisi-tellus/

Regenerative Medicine

  • Studies at the CNPRC have advanced the understanding of developmental timelines in the kidney, and applied these findings to new protocols and tissue engineering approaches to someday regenerate kidneys damaged by obstructive disease. (http://www.ncbi.nlm.nih.gov/pubmed/23997038)

Stem Cells and Gene Therapy:

  • The first pluripotent stem cell derived clinical trials to treat childhood blindness are now underway, using stem cell technologies discovered using monkeys first, then humans, by WNPRC scientist James Thomson in the 1990s-2000s. (https://clinicaltrials.gov/ct2/results?term=juvenile+macular+degeneration+stem+cell&Search=Search, http://www.ncbi.nlm.nih.gov/pubmed/18029452, http://www.ncbi.nlm.nih.gov/pubmed/9804556, http://www.ncbi.nlm.nih.gov/pubmed/7544005
  • To successfully treat human disease with stem cells, physicians will require safe, reliable, and reproducible measures of engraftment and function of the donor cells. Innovative studies at the CNPRC have revolutionized the ability to monitor stem/progenitor cell transplant efficiency in fetal and infant monkeys, and have used new noninvasive imaging techniques that demonstrated long-term engraftment and safety. (http://www.ncbi.nlm.nih.gov/pubmed/24098579)
  • Studies at the CNPRC have proven critical in gaining approval for investigational new drug (IND) applications to the FDA and conducting first-in-human trials of (1) an expressed siRNA in a lentiviral vector for AIDS/lymphoma patients,, and (2) achieving the overall goal of utilizing adeno-associated virus (AAV) expression of human acid alpha-glucosidase in 3 to 14-year-old Pompe patients who have developed ventilator dependence.

Tuberculosis and HIV

  • Mycobacterium tuberculosis (Mtb) is the causative agent of human tuberculosis (TB) with an estimated 8.8 million new TB cases and 1.4 million deaths annually. Tuberculosis is the leading cause of death in AIDS patients worldwide but very little is known about early TB infection or TB/HIV co-infection in infants. SNPRC scientist Marie-Claire Gauduin and colleagues have successfully established an aerosol newborn/infant model in nonhuman primates (NHPs) that mimics clinical and bacteriological characteristics of Mtb infection as seen in human newborns/infants. Aerosol versus intra broncho-alveolar Mtb infection was studied. After infection, specific lesions and cellular responses correlated with early Mtb lesions seen on thoracic radiographs were observed. This model will also allow the establishment of a TB coinfection model of pediatric AIDS. (http://www.ncbi.nlm.nih.gov/pubmed/24388650)

[Updated 01/27/15]

Harlow Dead, Bioethicists Outraged

harlow plaque jpeg (2)

The philosophy and bioethics community was rocked and in turmoil Friday when they learned that groundbreaking experimental psychologist Professor Harry Harlow had died over 30 years ago. Harlow’s iconic studies of mother and infant monkeys have endured for decades as the centerpiece of philosophical debate and animal rights campaigns.  With news of his death, philosophers worried that they would now need to turn their attention to new questions, learn about current research, and address persistent, urgent needs in public consideration of scientific research and medical progress. Scientists and advocates for a more serious contemporary public dialogue were relieved and immediately offered their assistance to help others get up to speed on current research.

To close the chapter, psychologists at the University of Wisconsin provided the following 40 year retrospective on Harlow’s work and its long-term impact (see below).

Internet reaction to the scientists’ offering was swift, fierce, and predictable.

“We will never allow Harlow to die,” said one leading philosopher, “The fact is that Harlow did studies that are controversial and we intend to continue making that fact known until science grinds to a halt and scientists admit that we should be in charge of all the laboratories and decisions about experiments. It is clear to us that we need far more talk and far less action. Research is complicated and unpredictable–all that messiness just needs to get cleaned up before research should be undertaken.”

Animal rights activists agreed, saying:

“For many decades Harlow and his monkeys have been our go-to graphics for protest signs, internet sites, and articles. It would simply be outrageously expensive and really hard to replace those now. Furthermore, Harlow’s name recognition and iconic monkey pictures are invaluable, irreplaceable, and stand by themselves. It would be a crime to confuse the picture with propaganda and gobbledygook from extremist eggheads who delusionally believe that science and animal research has changed anything.”

Others decried what they viewed as inappropriate humorous responses to the belated shock at Harlow’s passing.

“It is clear to us that scientists are truly diabolical bastards who think torturing animals is funny. Scientists shouldn’t be allowed to joke. What’s next? Telling people who suffer from disease that they should just exercise and quit eating cheeseburgers?” said a representative from a group fighting for legislation to outlaw food choice and ban healthcare for non-vegans and those with genetic predispositions for various diseases.

A journalist reporting on the controversial discovery of Harlow’s death was overheard grumbling, “But what will new generations of reporters write about? Anyway, the new research is pretty much the same as the old research, minus all the complicated biology, chemistry, and genetic stuff, so it may as well be Harlow himself doing it.”

A fringe group of philosophers derisively called the “Ivory Tower Outcasts” for their work aimed at cross-disciplinary partnerships in public engagement with contemporary ethical issues made a terse statement via a pseudonymous social media site.

“We told you so. Harlow is dead. Move on. New facts, problems require thought+action (ps- trolley software needs upgrade, man at switch quit)”

Harlow himself remained silent. For the most part, his papers, groundbreaking discoveries, and long-lasting impact on understanding people and animals remained undisturbed by the new controversy.

Statement from Psychologists:

Harlow’s career spanned 40+ years and produced breakthroughs in understanding learning, memory, cognition and behavior in monkeys1 (see Figure 1). In a time period where other animals were generally thought of as dumb machines, Harlow’s work demonstrated the opposite — that monkeys, like humans, have complex cognitive abilities and emotional attachments. Harlow and his colleagues developed now classic ways to measure cognition2,3. For example, the Wisconsin General Test Apparatus (WGTA; see Figure 1), in which monkeys uncover food beneath different types of colored toys and objects, allowed scientists to understand how monkeys learn new things, remember, and discriminate between different colors, shapes, quantities, and patterns.

The discoveries of Harlow and his colleagues in the 1930s and forward provided the foundation not only for changes in how people view other animals, but also for understanding how the brain works, how it develops, and –ultimately–how to better care for people and other animals.

Figure 1

Figure 1

In the last decade of his long career, Harlow, his wife Margaret– a developmental psychologist, and their colleagues, again rocked the scientific world with a discovery that fundamentally changed our biological understanding.3 Contrary to prevailing views in the 1950s and before, the Harlows’ studies of infant monkeys definitively demonstrated that mother-infant bonds and physical contact—not just provision of food—are fundamentally important to normal behavioral and biological development. Those studies provided an enduring empirical foundation for decades of subsequent work that shed new light on the interplay between childhood experiences, genes, and biology in shaping vulnerability, resilience, and recovery in lifespan health.

For a brief time at the very end of his career, Harlow performed a small number of studies that have served as the touchstone for philosophers, animal rights groups, and others interested in whether and how animal research should be done. The most controversial of the studies are known by their colloquial name “pit of despair” and were aimed at creating an animal model of depression. In this work, fewer than 20 monkeys were placed in extreme isolation for short periods (average of 6 weeks) following initial infant rearing in a nursery.

At the time, the late 1960s, the presence of brain chemicals had recently been identified as potentially critical players in behavior and mental illnesses like depression and schizophrenia. New understanding and treatment of the diseases was desperately needed to address the suffering of millions of people. Available treatments were crude. They included permanent institutionalization– often in abject conditions, lobotomy (removing part of the brain), malaria, insulin, or electric shock therapies. As some scientists worked to uncover the role of brain chemicals in behavior and mood, others worked to produce drugs that could alter those chemical networks to relieve their negative effects. In both cases, animal models based on similar brain chemistry and biology were needed in order to test whether new treatments were safe and effective. It was within this context that Harlow and his colleagues in psychiatry studied, in small numbers, monkeys who exhibited depressive-like behaviors.

By the 1970s and over the next decades, scientists produced medications that effectively treat diseases like schizophrenia and depression for many people. The therapies are not perfect and do not work for everyone, which is why research continues to identify additional and new treatments. Regardless, there is no question that the suffering of millions of people has been reduced, and continues to be alleviated, as a result of new medications and new understanding of the biological basis of disease.

Infant rhesus monkeys playing in nursery.  Wisconsin National Primate Research Center. @2014 University of Wisconsin Board of Regents

Infant rhesus monkeys playing in nursery. Wisconsin National Primate Research Center. @2014 University of Wisconsin Board of Regents

Looking back while moving forward

Nearly 50 years later, it is difficult to imagine the time before MRI and neuroimaging and before the many effective treatments for depression, schizophrenia and other diseases. It is perhaps even more difficult to imagine a time in which people believed that genes and biology were destiny, that other animals were automatons, or that mothers were only important because they provided food to their children. Casting an eye back to the treatment of monkeys, children, and vulnerable human populations in medical and scientific research 50 years ago, or even 30 years ago, is difficult as well. Standards for ethical consideration, protections for human and animal participants in research, and the perspectives of scientists, philosophers, and the public have all continued to change as knowledge grows. Yet, what has not changed is an enduring tension between the public’s desire for progress in understanding the world and in reducing disease and the very fact that the science required to make that progress involves difficult choices.

There are no guarantees that a specific scientific research project will succeed in producing the discoveries it seeks. Nor is there a way to know in advance how far-ranging the effect of those discoveries may be, or how they may serve as the necessary foundation for work far distant. In the case of Harlow’s work, the discoveries cast a bright light on a path that continues to advance new understanding of how the brain, genes, and experiences affect people’s health and well-being.

Mother and infant swing final

Mother and juvenile rhesus macaque at the Wisconsin National Primate Research Center. @2014 University of Wisconsin Board of Regents

 

 

 

 

 

 

 

In the 30 years since Harlow’s death, new technologies and new discoveries—including brain imaging (MRI, PET), knowledge about epigenetics (how genes are turned on and off), and pharmacotherapies—have been made, refined, and put into use in contemporary science. As a result, scientists today can answer questions that Harlow could not. They continue to do so not because the world has remained unchanged, or because they lack ethics and compassion, but because they see the urgent need posed by suffering and the possibility of addressing global health problems via scientific research.

Harlow’s legacy is a complicated one, but one worth considering beyond a simple single image because it is a legacy of knowledge that illustrates exactly how science continues to move forward from understanding built in the past. An accurate view of how science works, what it has achieved, what can and cannot be done, are all at the heart of a serious consideration of the consequences of choices about what scientific research should be done and how. Harlow and his studies may well be a touchstone to start and continue that dialogue. But it should then be one that also includes the full range of the work, its context and complexity, rather than just the easy cartoon evoked to draw the crowd and then loom with no new words.

Allyson J. Bennett, PhD

The author is a faculty member at the University of Wisconsin-Madison.  The views and ideas expressed here are her own and do not necessarily represent those of her employer.

Suomi SJ & Leroy, HA (1982) In Memoriam: Harry F. Harlow (1905-1982). American Journal of Primatology 2:319-342. (Note: contains a complete bibliography of Harlow’s published work.)

2Harlow HF & Bromer J (1938). A test-apparatus for monkeys. Psychological Record 2:434-436.

3Harlow HF (1949). The formation of learning sets. Psychological Review 56:51-65

4Harlow HF (1958). The nature of love. American Psychologist 13:673-685.

Pictures in need of accurate words: University of Florida animal photos

Pictures of a cat spay clinic misrepresented as a laboratory horror shop circulated the internet recently to support appeals to “end animal testing.” Speaking of Research wrote about it here “Fact into fiction: Why context matters with animal images,” noting the importance of understanding the facts and context for photographs.

This picture was used to misrepresent animal research

This picture was used to misrepresent animal research

In the cat spay clinic case, the photos were from a newspaper article. We have written previously about images of laboratory animals that have made their way to the internet via leaks, undercover operations, and open records release. In all cases, several points remain true. Images are powerful. Providing accurate information about the images is important. It is also true that there are important differences between the sources and ways that images are obtained. Those obtained via infiltrations and undercover operations may be from manipulated situations, or  small fractions of hours of recording, in both cases providing a deliberately misrepresentative view. Photos obtained from institutions via open records release can also be used to misrepresent laboratory animals’ care and treatment and can be the centerpiece in “shock” campaigns. Their value is obvious from even a quick survey of high profile attacks on research, as we’ve written about previously (here, here, here). As in the case of the spay clinic images, conflating veterinary and clinical care with scientific research is also common and further serves to confuse the issues.

Can the laboratory animal research community do a better job of providing context for images of animals?  Yes.

Knowing what the images show and why matters, particularly to people who would like to engage in serious and thoughtful consideration to inform their point of view and judgments. In absence of context and facts, the audience is left without key knowledge and an opportunity to educate is missed. Yet all too often the opportunity is missed and the images remain in public view without comment or context from those who could provide a better understanding of what the photographs show.

In reviewing laboratory animal photographs that appear on animal rights sites, it is obvious that there are generally two types: those from activities directly related to the scientific project and those related to veterinary care or housing and husbandry. In terms of providing context and information, the two differ with respect to their source and which personnel may best explain the content of the photographs.

What does the image depictSome images may be of actual scientific research activities. These may be of animals engaging in an activity directly related to the science question under study. For example, the images may illustrate how animals perform a cognitive or memory task, how they navigate a maze, or how a particular measurement is obtained. The Max Planck Institute for Biological Cybernetics website provides an example of this, with description and photographs of rhesus monkeys and cognitive neuroscience research. Another type of image directly related to the scientific project may be of a surgery or procedure. An example of this is found in pictures of a surgery involved in cat sound localization research (photos here, video here). In each case, it is not particularly challenging to provide additional information and context because the activities are typically also explained in the protocols, grants, and scientific papers about the study.

Images of clinical veterinary care, husbandry, and housing appear frequently in activist campaigns and public view. For example, pictures of routine physical examinations, health tests, unexpected injuries unrelated to scientific procedures, or photos of animals in their normal housing, have all appeared via various sources. Many times– perhaps more often than not– the activity depicted in the images would not be obvious to a lay audience because it remains unexplained.

A common image – tuberculosis skin test

One of the best examples of misunderstood images is found in pictures of an anesthetized macaque monkey with a needle injecting something in its eyelid. The picture circulates the internet with various captions opposing “animal testing.”   What does this picture show?

tb imageIt is a skin test, commonly used in human and nonhuman primates, for early detection of tuberculosis. A small amount of tuberculin (non-harmful) is injected just under the skin. In almost all cases, the primate does not have tuberculosis and the skin remains normal. If the primate—human or not—does have a reaction to the test, indicated by redness and some swelling, it provides evidence of possible tuberculosis infection. That person, or monkey, then receives additional testing and preventive measures for treatment and to avoid infecting and harming others.

Tuberculosis testing is routinely performed as a health procedure in humans who work in hospitals, schools, with children and with others who may be vulnerable. In settings where nonhuman primates are housed, tuberculosis testing is often routinely performed with all human personnel and with the other animals. Why? Because tuberculosis is a rare disease, but one that can be a threat to the animals’ health and thus, precautions are necessary to ensure their health. The difference between human and monkey tb testing is that for humans, the injection is given without pain relief or anesthesia, via a needle inserted into the forearm.

Aside from the momentary discomfort of the injection, the test is painless and without irritating after-effects. In monkeys, the injection is typically given while the animal is anesthetized and is placed just under the skin of the upper eyelid. Why the difference? It is a simple reason—the key to the test is looking for redness or slight swelling. In monkeys, the forearm is fur-covered and it would be very difficult to detect a reaction in an unobtrusive way.

University of Florida monkey pictures

Not surprisingly, the monkey tb test photo is one that seems to appear in an ongoing campaign against the University of Florida. In response to several years of attacks on their animal research programs, public universities in Florida are pursuing new action to shield personal information about their personnel from public disclosure.   We’ve written previously about an ongoing campaign of violent threats, harassment, and protest by local activists (here, here, here).

In parallel to other campaigns, photographs are a centerpiece of the current attacks on animal research. As reported by Beatrice Dupuy in the Independent Alligator:

“Disturbing pictures of primates being examined by researchers are featured on the organization’s website along with posters with quotes like “stop the holocaust inside UF, free the monkeys.” After a three year lawsuit, the organization, formerly named Negotiation is Over, obtained UF’s public veterinary records last April. The researchers named in public records were the first ones to be targeted by animal rights activists, said Janine Sikes, a UF spokeswoman.”

What are these “disturbing pictures of primates being examined by researchers”?

The photographs <warning: link to AR site> are of macaque monkeys that appear to be receiving routine veterinary care or are simply in fairly standard housing. While the activists claim these photos are evidence of maltreatment at the hands of researchers, they likely are mostly of routine veterinary procedures. For example, two appear to be of an anesthetized macaque monkey receiving a tattoo, another two of an anesthetized monkey receiving a tuberculosis test, while others show the reddened skin that rhesus macaques exhibit normally in the wild and captivity. One photo depicts what looks like a stillborn infant macaque. Without context or confirmation, it isn’t surprising that the photographs can be interpreted in many ways.

UF’s spokesperson says: “The university wants to be very open and honest about its research,” … “It wants to stop these personal attacks against our researchers.”

One place to begin is to provide straightforward and accurate context for the images of laboratory animals that have been released. While those with experience in laboratory care of nonhuman primates can view the images and be reasonably certain that they are mostly of clinical veterinary care, it is only the UF veterinary, animal care program, and scientific personnel that can provide accurate information. Other universities have done exactly that when faced with the same situation. In “An Open Letter to the Laboratory Animal Veterinary Community and Research Institution Administration”   we wrote:

“While scientists can address questions about the scientific side of animal research, we need the laboratory animal care and veterinary staff to provide their expertise in service of addressing public questions about clinical care and husbandry.  If they do not, it will be no surprise if the public view of animal research is disproportionately colored by the relatively rare adverse events and the misrepresentations of animal rights activists. Many believe that it is possible—and perhaps acceptable—to ignore this part of reality in order to focus on more immediate demands for time, energy, and resources. Consider, however, that a fundamental part of the AWA, accreditation, regulation, and professional obligation is actually to ensure communication with the public that supports animal research.  Thus, it is our entire community who share a primary obligation to engage in the dialogue that surrounds us.”

We have consistently condemned the extremists who have targeted UF scientists and others with outrageous harassment. Tactics designed to elicit fear and terror do not have a place in democratic society and do nothing to promote fair and civil dialogue about complex issues.

At the same time, we believe and have written often, that the scientific and laboratory animal community, including scientists, veterinarians, and institutional officials should consider that better education and explanation are key to building public dialogue and understanding of research. Furthermore, as highlighted in this case and others, releasing photographs, records, and other materials without providing context serves no one well. Providing straightforward explanation of the veterinary practices, housing, husbandry, and care of laboratory animals not only gives context to photographs, but also should not be that hard to do.

Allyson J. Bennett

More information and resources:

Raising the bar: What makes an effective public response in the face of animal rights campaigns:  http://speakingofresearch.com/2013/02/20/raising-the-bar-what-makes-an-effective-public-response-in-the-face-of-animal-rights-campaigns/

Time for a change in strategies? http://speakingofresearch.com/2013/06/24/time-for-a-change/

A detailed response to a PETA video accusing a primate lab of mistreatment:  http://speakingofresearch.com/2008/07/04/peta-out-with-the-new-in-with-the-old/

Speaking of Research media briefing (pdf):  Background Briefing on Animal Research in the US

To learn more about the role of animal research in advancing human and veterinary medicine, and the threat posed to this progress by the animal rights lobby, follow us on Facebook or Twitter.

Understanding addiction: NIDA article highlights contribution of animal research

Professor David Jentsch is a highly respected UCLA neuroscientist who specialises in the study of addiction, one of the most widespread and serious medical problems in our society today. Sadly, by devoting his career to finding out how to better treat a condition that ruins – and all too often ends – many millions of lives in the USA and around the world every year, David has found himself, his colleagues, and his friends and neighbors under attack from animal rights extremists whose tactics have ranged from harassment, stalking and intimidation, to arson and violence.

Did this extremist campaign persuade David to abandon his research?

No chance!

In 2009 David responded to the extremist campaign against him and his colleagues by helping to found Pro-Test for Science to campaign for science and against animal rights extremism at UCLA, and has been a key contributor to Speaking of Research, writing articles on the role of animal studies in the development of new therapies for addiction, what his studies on rodents and vervet monkeys involve, and how addiction research can help us to understand obesity.

Vervet monkeys involved in David Jentsch's research program live in outdoor social groups to ensure optimal welfare

Vervet monkeys involved in David Jentsch’s research program live in outdoor social groups to ensure optimal welfare

This week the NIH’s National institute on Drug Abuse (NIDA) has published an excellent article on David’s ongoing research entitled  “Methamphetamine Alters Brain Structures, Impairs Mental Flexibility”, which highlights the importance of non-human primate research in identifying how addiction alters the brain and why some individuals are more prone to develop damaging methamphetamine dependency than others. You can read the article in full here.

Human chronic methamphetamine users have been shown to differ from nonusers in the same ways that the post-exposure monkeys differed from their pre-exposure selves. The researchers’ use of monkeys as study subjects enabled them to address a question that human studies cannot: Did the drug cause those differences, or were they present before the individuals initiated use of the drug? The study results strongly suggest that the drug is significantly, if not wholly, responsible”

This knowledge of how drug use disrupts brain function will be crucial to development effective clinical interventions for methamphetamine addiction, and the huge scale and devastating impact of methamphetamine use makes it clear that such interventions are desperately needed, as David highlights in the article’s conclusion.

Methamphetamine dependence is currently a problem with no good medical treatments, when you say a disease like methamphetamine dependence is costly, it’s not just costing money, but lives, productivity, happiness, and joy. Its impact bleeds through families and society.”

At a time when animal rights activists in many countries are pushing to ban addiction research involving animals, the NIDA article on the work of David and his colleagues shows why this work is so valuable, and just what would be lost if animal rights extremists are allowed to have their way.

Speaking of Research

To learn more about the role of animal research in advancing human and veterinary medicine, and the threat posed to this progress by the animal rights lobby, follow us on Facebook or Twitter.