Research Methods in Life Sciences Commons^™

An Examination Of Chimpanzee Use In Human Cancer Research, Jarrod Bailey

Laboratory Experiments Collection

Advocates of chimpanzee research claim the genetic similarity of humans and chimpanzees make them an indispensable research tool to combat human diseases. Given that cancer is a leading cause of human death worldwide, one might expect that if chimpanzees were needed for, or were productive in, cancer research, then they would have been widely used. This comprehensive literature analysis reveals that chimpanzees have scarcely been used in any form of cancer research, and that chimpanzee tumours are extremely rare and biologically different from human cancers. Often, chimpanzee citations described peripheral use of chimpanzee cells and genetic material in predominantly human …

Interests And Harms In Primate Research, Nathan Nobis

Experimentation Collection

The article discusses the moral issues on primate research in reference to the moral defenses by Sughrue and colleagues. It states that Sughrue and colleagues have claimed to provide equal examination of the primate stroke research's ethics. It mentions that the promise to straighten out a number of ethical arguments in favor and against primate research was not fulfilled. Several moral arguments are presented in response to Sughrue and colleagues' moral defense for animal experimentation.

From Traumatic Brain Injury To Posttraumatic Epilepsy: What Animal Models Tell Us About The Process And Treatment Options, Asla Pitkänen, Riikka J. Immonen, Olli H.J. Gröhn, Irina Kharatishvili

Biomedicine and Animal Models in Research Collection

A large number of animal models of traumatic brain injury (TBI) are already available for studies on mechanisms and experimental treatments of TBI. Immediate and early seizures have been described in many of these models with focal or mixed type (both gray and white matter damage) injury. Recent long-term video-electroencephalography (EEG) monitoring studies have demonstrated that TBI produced by lateral fluid-percussion injury in rats results in the development of late seizures, that is, epilepsy. These animals develop hippocampal alterations that are well described in status epilepticus–induced spontaneous seizure models and human posttraumatic epilepsy (PTE). In addition, these rats have damage …

Are Animal Models Predictive For Humans?, Niall Shanks, Ray Greek, Jean Greek

Validation of Animal Experimentation Collection

It is one of the central aims of the philosophy of science to elucidate the meanings of scientific terms and also to think critically about their application. The focus of this essay is the scientific term predict and whether there is credible evidence that animal models, especially in toxicology and pathophysiology, can be used to predict human outcomes. Whether animals can be used to predict human response to drugs and other chemicals is apparently a contentious issue. However, when one empirically analyzes animal models using scientific tools they fall far short of being able to predict human responses. This is …

The Validity Of Animal Experiments In Medical Research, Gill Langley

Experimentation Collection

Other animals, such as mice, rats, rabbits, dogs and monkeys, are widely used as surrogates for humans in fundamental medical research. This involves creating disorders in animals by chemical, surgical or genetic means, with the aim of mimicking selected aspects of human illnesses.

It is a truism that any model or surrogate is not identical to the target being modelled. So, in medical research, experiments using animals or cell cultures or even healthy volunteers instead of patients (being the target population with the target illness) will inevitably have limitations, although these will be greater or lesser depending on the model.

The Minimization Of Research Animal Distress And Pain: Conclusions And Recommendations, Kathleen Conlee, Martin Stephens, Andrew N. Rowan

Laboratory Experiments Collection

While the attention given to preventing, assessing, and alleviating pain in research animals has increased noticeably in recent decades, much remains to be done both in terms of implementing best practices and conducting studies to answer outstanding questions. In contrast, the attention to distress (particularly non-pain induced distress) has shown no comparable increase. There are many reasons for this discrepancy, including the conceptual untidiness of the distress concept, the paucity of pharmacological treatments for distress, and perceived lack of regulatory emphasis on distress. These are challenges that need to be addressed and overcome. This book is intended to help meet …

Addressing Distress And Pain In Animal Research: The Veterinary, Research, Societal, Regulatory And Ethical Contexts For Moving Forward, Kathleen Conlee, Martin Stephens, Andrew N. Rowan

Experimentation Collection

While most people recognize that biomedical scientists are searching for knowledge that will improve the health of humans and animals, the image of someone deliberately causing harm to an animal in order to produce data that may lead to some future benefit has always prompted an uncomfortable reaction outside the laboratory. However, proponents of animal research have usually justified the practice by reference to greater benefits (new knowledge and medical treatments) over lesser costs (in animal suffering and death). Given that one of the costs of animal research is the suffering experienced by the animals, the goal of eliminating distress …

International Regulatory Definitions Of Animal Distress In Animal Research And Animal Production – An Overview., Jon Richmond

Laws and Legislation Collection

Various systems already exist to judge animal welfare - of which distress can be one component - in the laboratory setting (see Hendriksen and Morton 1998). Many rely on nonspecific measures; that is they may be manifestations of a number of states, not all of them necessarily indicative of poor welfare. Certainly, there is already good provision for methods to recognise some of the commoner manifestations of distress, arguably they are sufficiently meaningful to categorise various distress states, though to my mind they are for the present still not suited for use as means of strictly quantifying the negative impact/suffering …

Measurement And Mitigation Of Laboratory Animal Distress Sources Of Distress In The Animal Laboratory, Larry Carbone

Laboratory Experiments Collection

Pain and distress differ, but overlap. For the purposes of this discussion, we will consider pain to involve nociceptive input of stimuli that are potentially tissue damaging, and that further include an unpleasant emotional component (Merskey and Bogduk 1994). Pain need not necessarily induce distress, as when an animal or human willingly undergoes some painful situation in order to achieve a desired reward. In that case, while the pain may be unpleasant, it is not so severe as to be intolerable. Likewise, there are many potential causes of distress that do not involve physical pain.

The Role Of Clinical Veterinary Medicine In The Assessment And Treatment Of Laboratory Animal Distress, V. Hampshire

Veterinary Science and Medicine Collection

It is doubtful that the scientific community will ever arrive at a consensus definition for distress as it may be attempted for the purposes of improving animal welfare in and across the myriad of research, testing and teaching facilities in the United States and throughout the minuet of protocols that exist for animals. The stakeholders in this attempt can however address most causes of physiologic distress by instituting time-honored veterinary and agrarian approaches to animal surveillance. In this manner, the majority of individuals who participate in responsible and humane animal care might be assuaged in that a condition of maximum …

Resolving Animal Distress And Pain: Principles And Examples Of Good Practice In Various Fields Of Research, Alicia Karas, Matthew C. Leach, Karl A. Andrutis, Kathleen Conlee, John P. Gluck, Andrew N. Rowan, Martin L. Stephens

Laboratory Experiments Collection

Pain and distress are central topics in legislation, regulations, and standards regarding the use of animals in research. However, in practice, pain has received greatly increased attention in recent years, while attention to distress has lagged far behind, especially for distress that is not induced by pain. A contributing factor is that there is less information readily available on distress, including practical information on its recognition, assessment and alleviation.

This chapter attempts to help fill that void by reversing the usual pattern and giving greater attention to distress than to pain. In addition, we also bypass the pain versus distress …

Reviewing Existing Knowledge Prior To Conducting Animal Studies, Andrew Knight

Experimentation Collection

Highly polarised viewpoints about animal experimentation have often prevented agreement. However, important common ground between advocates and opponents was demonstrated within a discussion forum hosted at www.research-methodology.org.uk in July–August 2008, by the independent charity, SABRE Research UK. Agreement existed that many animal studies have methodological flaws — such as inappropriate sample sizes, lack of randomised treatments, and unblinded outcome assessments — that may introduce bias and limit statistical validity. There was also agreement that systematic reviews of the human utility of animal models yield the highest quality of evidence, as their reliance on methodical and impartial methods to select significant …

Developmental Toxicity Testing: Protecting Future Generations?, Jarrod Bailey

Experimentation Collection

A recent editorial is discussed, which implied that animal-based developmental and reproductive toxicology tests will continue to be crucial, that the thalidomide disaster could have been prevented by more animal testing, and that tests on juvenile animals would help to protect children (as developing adults) from the adverse effects of pharmaceuticals. It is argued that animal tests in these scientific areas do not provide reliable data that are predictive for human responses and, even if they did, the tests are too expensive and time-consuming for application to the very large number of substances that need to be tested. It is …

An Assessment Of The Role Of Chimpanzees In Aids Vaccine Research, Jarrod Bailey

Laboratory Experiments Collection

Prior to Simian Immunodeficiency Virus (SIV)-infected macaques becoming the ‘model of choice’ in the 1990s, chimpanzees were widely used in AIDS vaccine research and testing. Faced with the continued failure to develop an effective human vaccine, some scientists are calling for a return to their widespread use. To assess the past and potential future contribution of chimpanzees to AIDS vaccine development, databases and published literature were systematically searched to compare the results of AIDS vaccine trials in chimpanzees with those of human clinical trials, and to determine whether the chimpanzee trials were predictive of the human response. Protective and/or therapeutic …

Estimates For Worldwide Laboratory Animal Use In 2005, Katy Taylor, Nicky Gordon, Gill Langley, Wendy Higgins

Laboratory Experiments Collection

Animal experimentation continues to generate public and political concern worldwide. Relatively few countries collate and publish animal use statistics, yet this is a first and essential step toward public accountability and an informed debate, as well as being important for effective policy-making and regulation. The implementation of the Three Rs (replacement, reduction and refinement of animal experiments) should be expected to result in a decline in animal use, but without regular, accurate statistics, this cannot be monitored. Recent estimates of worldwide annual laboratory animal use are imprecise and unsubstantiated, ranging from 28–100 million. We collated data for 37 countries that …

The Beginning Of The End For Chimpanzee Experiments?, Andrew Knight

Experimentation Collection

The advanced sensory, psychological and social abilities of chimpanzees confer upon them a profound ability to suffer when born into unnatural captive environments, or captured from the wild – as many older research chimpanzees once were – and when subsequently subjected to confinement, social disruption, and involuntary participation in potentially harmful biomedical research. Justifications for such research depend primarily on the important contributions advocates claim it has made toward medical advancements. However, a recent large-scale systematic review indicates that invasive chimpanzee experiments rarely provide benefits in excess of their profound animal welfare, bioethical and financial costs. The approval of large …

Systematic Reviews Of Animal Experiments Demonstrate Poor Contributions To Human Healthcare, Andrew Knight

Experimentation Collection

Widespread reliance on animal models during preclinical research and toxicity testing assumes their reasonable predictivity for human outcomes. However, of 20 published systematic reviews examining human clinical utility located during a comprehensive literature search, animal models demonstrated significant potential to contribute toward clinical interventions in only two cases, one of which was contentious. Included were experiments expected by ethics committees to lead to medical advances, highly-cited experiments published in major journals, and chimpanzee experiments—the species most generally predictive of human outcomes. Seven additional reviews failed to demonstrate utility in reliably predicting human toxicological outcomes such as carcinogenicity and teratogenicity. Results …

Medical Progress Depends On Animal Models - Doesn't It?, Robert A. J. Matthews

Validation of Animal Experimentation Collection

Animal models are widely recognized as being essential to the progress of medical science. In countering the critics’ arguments of the use of animals in medicine, one statement has acquired almost talismanic importance:

‘Virtually every medical achievement of the last century has depended directly or indirectly on research with animals.’

In this essay, the origins and justification of this oft-repeated statement are examined. Despite its endorsement by leading academic bodies, it is far from clear that the statement has been, or even could be, formally validated.

Non-Animal Methodologies Within Biomedical Research And Toxicity Testing, Andrew Knight

Experimentation Collection

Laboratory animal models are limited by scientific constraints on human applicability, and increasing regulatory restrictions, driven by social concerns. Reliance on laboratory animals also incurs marked – and in some cases, prohibitive – logistical challenges, within high-throughput chemical testing programmes, such as those currently underway within Europe and the US. However, a range of non-animal methodologies is available within biomedical research and toxicity testing. These include: mechanisms to enhance the sharing and assessment of existing data prior to conducting further studies, and physicochemical evaluation and computerised modelling, including the use of structure-activity relationships and expert systems. Minimally-sentient animals from lower …

Systematic Reviews Of Animal Experiments Demonstrate Poor Human Clinical And Toxicological Utility, Andrew Knight

Experimentation Collection

The assumption that animal models are reasonably predictive of human outcomes provides the basis for their widespread use in toxicity testing and in biomedical research aimed at developing cures for human diseases. To investigate the validity of this assumption, the comprehensive Scopus biomedical bibliographic databases were searched for published systematic reviews of the human clinical or toxicological utility of animal experiments. In 20 reviews in which clinical utility was examined, the authors concluded that animal models were either significantly useful in contributing to the development of clinical interventions, or were substantially consistent with clinical outcomes, in only two cases, one …

Considerations For Determining Optimal Mouse Caging Density, Charmaine Foltz, Larry Carbone, David Delong, Bernard E. Rollin, Pascalle Van Loo, Julia Whitaker, Axel Wolff

Laboratory Research and Animal Welfare Collection

At the 2006 National Meeting of the American Association of Laboratory Animal Science, a panel discussed the question of what constitutes optimal or acceptable housing density for mice. Though there is a consensus that present guidelines are somewhat arbitrarily defined, scientific research has not yet been able to provide clear recommendations for amending them. Speakers explored the many factors that influence decisions on mouse housing, including regulatory requirements, scientific data and their interpretation, financial considerations and ethical concerns. The panel largely agreed that animal well-being should be the measure of interest in evaluating housing density and that well-being includes not …

The Development Of New Concepts For Assessing Reproductive Toxicity Applicable To Large Scale Toxicological Programmes, S. Bremer, C. Pellizzer, S. Hoffmann, T. Seidle, T. Hartung

Experimentation Collection

Large scale toxicological testing programmes which are currently ongoing such as the new European chemical legislation REACH require the development of new integrated testing strategies rather than applying traditional testing schemes to thousands of chemicals. The current practice of requiring in vivo testing for every possible adverse effect endanger the success of these programmes due (i) to limited testing facilities and sufficient capacity of scientific/technical knowledge for reproductive toxicity; (ii) an unacceptable number of laboratory animals involved (iii) an intolerable number of chemicals classified as false positive.

A key aspect of the implementation of new testing strategies is the determination …

Animal Research: A Moral Science, Bernard E. Rollin

Experimentation Collection

No abstract provided.

Comparison Of Treatment Effects Between Animal Experiments And Clinical Trials: Systematic Review, Pablo Perel, Ian Roberts, Emily Sena, Philipa Wheble, Catherine Briscoe, Peter Sandercock, Malcolm Macleod, Luciano E. Mignini, Pradeep Jayaram, Khalid S. Khan

Validation of Animal Experimentation Collection

Objective To examine concordance between treatment effects in animal experiments and clinical trials.

Study design Systematic review.

Data sources Medline, Embase, SIGLE, NTIS, Science Citation Index, CAB, BIOSIS.

Study selection Animal studies for interventions with unambiguous evidence of a treatment effect (benefit or harm) in clinical trials: head injury, antifibrinolytics in haemorrhage, thrombolysis in acute ischaemic stroke, tirilazad in acute ischaemic stroke, antenatal corticosteroids to prevent neonatal respiratory distress syndrome, and bisphosphonates to treat osteoporosis.

Review methods Data were extracted on study design, allocation concealment, number of randomised animals, type of model, intervention, and outcome.

Results Corticosteroids did not show …

‘Concentration Camps For Lost And Stolen Pets’: Stan Wayman’S Life Photo Essay And The Animal Welfare Act, Bernard Unti

Laws and Legislation Collection

In the 1960s, LIFE was America's single most important general weekly magazine, its photo-essay formula catering to a middle class constituency of millions. By the halfway point of that tumultuous decade, readers were accustomed to seeing searing and unpleasant images of a changing nation, one racked by civil unrest and entangled in a bloody war in Southeast Asia. But when LIFE's February 4, 1966 issue landed on newsstands and in mailboxes across the United States, with the cover's warning "YOUR DOG IS IN CRUEL DANGER," tens of millions of readers became acquainted for the first time with another kind of …

The Poor Contribution Of Chimpanzee Experiments To Biomedical Progress, Andrew Knight

Experimentation Collection

Biomedical research on captive chimpanzees incurs substantial nonhuman animal welfare, ethical, and financial costs that advocates claim result in substantial advancements in biomedical knowledge. However, demonstrating minimal contribution toward the advancement of biomedical knowledge generally, subsequent papers did not cite 49.5% (47/95), of 95 experiments randomly selected from a population of 749 published worldwide between 1995 and 2004. Only 14.7% (14/95) were cited by 27 papers that abstracts indicated described well-developed methods for combating human diseases. However, detailed examination of these medical papers revealed that in vitro studies, human clinical and epidemiological studies, molecular assays and methods, and genomic studies …

A Holistic Approach To Taking Research Animal Suffering Seriously, Martin Stephens, Kathleen Conlee

Experimentation Collection

It is widely agreed, and often legally required, that distress and pain in research animals should be minimized--for the sake of animal welfare, ethical obligation, and public concern, as well as scientific quality. As testimony to the importance of distress and pain to stakeholders interested in research animals, many countries compile and publish annual statistics documenting overall patterns and trends on distress and pain in research animals.

We argue for a holistic approach to minimizing research animal suffering, with all relevant parties sharing in this responsibility. Researchers, laboratory personnel, oversight committees, and facility administrators are central to day-to-day animal care. …

Overcoming Ideology: Why It Is Necessary To Create A Culture In Which The Ethical Review Of Protocols Can Flourish, Bernard E. Rollin

Experimentation Collection

My objective in this commentary is to describe and discuss a major threat to the continued thriving of science in our society, which is all the more insidious because it is largely unrecognized by those in the scientific community who are in a position to rectify the problem. Astute people in that community are well aware of many threats to science that include but are not limited to the following: appalling public scientific illiteracy; the unfortunate resurgence of “magic thinking”—reflected in turn in the reappearance of Creationism, which is hostile to evolution—and the billions of dollars spent on evidentially baseless …

Of Mice And Men, Bernard E. Rollin

Experimentation Collection

No abstract provided.

Chimpanzee Research: An Examination Of Its Contribution To Biomedical Knowledge And Efficacy In Combating Human Diseases, Jarrod Bailey, Jonathan Balcombe, Theodora Capaldo

Experimentation Collection

Research on captive chimpanzees incurs considerable animal welfare, ethical and financial costs. Advocates of such research claim these costs are outweighed by substantial advancements in biomedical knowledge, and that the genetic similarity of chimpanzees to humans enables the former to make critical contributions to preventing, diagnosing and combating human diseases. To assess these claims, we examined the disciplines investigated in 749 studies of captive chimpanzees published from 1995-2004 inclusive, and subjected 95 randomly selected papers to a detailed citation analysis:

49.5% (47/95) of papers had not been cited at the time of this study; 38.5% (34/95) were cited by 116 …