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Animal Experiments in Biomedical Research: A Historical Perspective
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The use of non-human animals in biomedical research has given important contributions to the medical progress achieved in our day, but it has also been a cause of heated public, scientific and philosophical discussion for hundreds of years. This review, with a mainly European outlook, addresses the history of animal use in biomedical research, some of its main protagonists and antagonists, and its effect on society from Antiquity to the present day, while providing a historical context with which to understand how we have arrived at the current paradigm regarding the ethical treatment of animals in research.
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Cites
An Introduction to the Principles of Morals and Legislation
de Champs, E. (2017) · HAL · Cited by 6,669
The Principles of Humane Experimental Technique
(1960) · The Medical Journal of Australia · doi:10.5694/j.1326-5377.1960.tb73127.x · Cited by 5,045 · cited 2×
“The Principles of Humane Experimental Technique; Methuen & Co. Ltd.: London, UK, 1959.”
BackgroundBroken Limits to Life Expectancy
Oeppen, J., & Vaupel, J. W. (2002) · Science · doi:10.1126/science.1069675 · Cited by 2,819 · cited 1×
“that biomedical progress had on the twentieth century was the increase in life expectancy, which in some developed countries doubled between 1900 and 2000, and is still on the rise today [144–146].”
BackgroundRegan, T. (1987) · Springer eBooks · doi:10.1007/978-94-009-3331-6_15 · Cited by 1,999
Shapin, S. (1996) · University of Chicago Press eBooks · doi:10.7208/chicago/9780226398488.001.0001 · Cited by 1,629
Can Animal Models of Disease Reliably Inform Human Studies?
van der Worp, H. B., Howells, D. W., Sena, E. S., Porritt, M. J., Rewell, S., O'Collins, V., & Macleod, M. R. (2010) · PLoS Medicine · doi:10.1371/journal.pmed.1000245 · Cited by 1,354 · cited 1×
“, [48].”
An Introduction to the Study of Experimental Medicine
Bernard, C., Wolf, S., & Greene, H. C. (2018) · Routledge eBooks · doi:10.4324/9781351320764-1 · Cited by 937
SINGER, P. A. (1973) · Palgrave Macmillan UK eBooks · doi:10.1007/978-1-349-25176-6_1 · Cited by 917
Singer, P. (2011) · Cambridge University Press eBooks · doi:10.1017/cbo9780511975950 · Cited by 879
Flagged first, then by citations
6 of the 165 references couldn’t be matched to a known paper.
Research works printed but not linked: 52
- Anderson, S. (2005). Making Medicines: A Brief History of Pharmacy and Pharmaceuticals, Pharmaceutical Press.
- Prioreschi, P. (1998). A History of Medicine, Volume 3: Roman Medicine, Horatius Press.
- Prioreschi, P. (1996). A History of Medicine, Volume 2: Greek Medicine, Horatius Press. [2nd ed.].
- Prioreschi, P. (1996). A History of Medicine, Volume 5: Medieval Medicine, Edwin Mellen Press. [2nd ed.].
- Regan, T., and Singer, P. (1989). Animal Rights and Human Obligations, Prentice Hall. [2nd ed.].
- Boden, M.E. (2006). Mind as Machine: A History of Cognitive Science, Oxford University Press.
- Moya, G.J.D. (1991). Rene Descartes: Critical Assessments, Routledge.
- Gaukroger, S., Schuster, J., and Sutton, J. (2000). Descartes’ Natural Philosophy, Routledge.
- Schneewind, J.B. (1997). Lectures on Ethics, Cambridge University Press.
- Conrad, L.I., Neve, M., Nutton, V., Porter, R., and Wear, A. (1995). The Western Medical Tradition: 800 BC–1800 AD, Cambridge University Press.
- Shackelford, J. (2003). William Harvey and the Mechanics of the Heart, Oxford University Press.
- Conrad, L.I., Neve, M., Nutton, V., Porter, R., and Wear, A. (1995). The Western Medical Tradition: 800 BC-1800 AD, Cambridge University Press.
- Duffin, J. (2010). History of Medicine: A Scandalously Short Introduction, University of Toronto Press. [2nd ed.].
- Maehle, A.-H. (1999). Drugs on Trial: Experimental Pharmacology and Therapeutic Innovation in the Eighteenth Century, Editions Rodopi. · DOI
- Voltaire, F.M.A. (2004). Philosophical Dictionary, Penguin Books.
- Brunton, D. (2004). Medicine Transformed: Health, Disease and Society in Europe, 1800–1930, Manchester University Press.
- Duffin, J. (2010). History of Medicine: A Scandalously Short Introduction, University of Toronto Press. [2nd ed.].
- Bynum, W.F. (1994). Science and the Practice of Medicine in the Nineteenth Century, Cambridge University Press.
- Rudacille, D. (2001). The Scalpel and the Butterfly: The Conflict between Animal Research and Animal Protection, University of California Press.
- Bynum, W.F. (1994). Science and the Practice of Medicine in the Nineteenth Century, Press Syndicate of the University of Cambridge.
- Coleman, W., and Holmes, F.L. (1988). The Investigative Enterprise: Experimental Physiology in Nineteenth-Century Medicine, University of California Press. · DOI
- Olmsted, J.M.D. (1944). François Magendie, Arno Press.
- Davis, 1885, The moral aspects of vivisection, North Am. Rev., 140, 203
- Inoue, T., and Kodama, Y. (2007, January 21–25). Future Alternatives in “3Rs”: Learning from History. Proceedings of the 6th World Congress on Alternatives & Animal Use in the Life Sciences, Tokyo, Japan.
- Debré, P. (2000). Louis Pasteur, Johns Hopkins University Press.
- Rey, R. (1998). The History of Pain, Harvard University Press.
- Cunningham, A., and Williams, P. (1992). The Laboratory Revolution in Medicine, Cambridge University Press.
- Tait, L. (1882). The Uselessness of Vivisection upon Animals as a Method of Scientific Research, The Herald Press.
- Semmelweis, I. (1983). Etiology, Concept and Prophylaxis of Childbed Fever, University of Wisconsin Press.
- Hendriksen, C.F.M., and Morton, D.B. (1999). Humane Endpoints in Animals Experiments for Biomedical Research, Royal Society of Medicine Press.
- Ullmann, 2007, Pasteur–Koch: Distinctive ways of thinking about infectious diseases, Microbe, 2, 383
- Silverstein, A.M. (2001). Paul Ehrlich’s Receptor Immunology: The Magnificent Obsession, Elsevier Science.
- Pearce, 1912, Research in medicine. II. The development of laboratories for the medical sciences, Popul. Sci. Month., 80, 548
- Davis, N. (1903). History of Medicine, Cleveland Press.
- Romano, T.M. (2002). Making Medicine Scientific: John Burdon Sanderson and the Culture of Victorian Science, Johns Hopkins University Press.
- Cunningham, A., and Williams, P. (1992). The Laboratory Revolution in Medicine, Cambridge University Press.
- Rudacille, D. (2001). The Scalpel and the Butterfly: The Conflict between Animal Research and Animal Protection, University of California Press.
- Suckow, M.A., Weisbroth, S.H., and Franklin, C.L. (2006). The Laboratory Rat, Elsevier.
- Fox, J.G. (2007). The Mouse in Biomedical Research: History, Wild Mice, and Genetics, Academic Press.
- Hedrich, H.J., and Bullock, G.R. (2004). The Laboratory Mouse, Elsevier Academic Press.
- Singer, P. (2003). Animal liberation at 30. The New York Review of Books.
- Ryder, R.D. (2000). Animal Revolution: Changing Attitudes toward Speciesism, Berg. · DOI
- Singer, P. (2011). Practical Ethics, Cambridge University Press. · DOI
- Regan, T., and Singer, P. (1989). Animal Rights and Human Obligations, Prentice Hall. [2nd ed.].
- Donway, 1999, Scientists in bunkers: How appeasement of “animal rights” activism has failed, Cerebrum: The Dana Forum on Brain Science, Volume 1, 50
- Aldhous, 1999, Animal experiments: Let the people speak, New Sci., 162, 26
- Balls, M. (2007, January 21–25). Professor W.M.S. Russell (1925–2006): Doyen of the three Rs. Proceedings of the 6th World Congress on Alternatives & Animal Use in the Life Sciences, Tokyo, Japan.
- Salem, D.J., and Rowan, A.N. (2001). The STate of the Animals: 2001, Humane Society Press.
- Smyth, D.H. (1978). Alternatives to Animal Experiments, Scolar Press [for] the Research Defence Society.
- Sztybel, 2007, Animal rights law: Fundamentalism versus pragmatism, J. Crit. Anim. Stud., 5, 1
- Kulpa-Eddy, J., Snyder, M., and Stokes, W. (2007, January 21–25). A review of trends in animal use in the united states (1972–2006). Proceedings of the 6th World Congress on Alternatives & Animal Use in the Life Sciences, Tokyo, Japan.
- Louhimies, 2012, Eu Directive 2010/63/EU: “Implementing the three Rs through policy”, ALTEX Proc., 1, 27
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Metadata
- Authors
- Franco, N.
- Affiliations
- Universidade do Porto (PT)
- Corresponding author
- Franco, Nuno
- ORCID
- Franco, Nuno
- Venue
- Animals
- Publisher
- MDPI AG
- Published
- 2013-03-19
- Volume
- 3
- Issue
- 1
- Pages
- 238-273
- ISSN
- 2076-2615 (ISSN-L)
- PMC
- PMC4495509
- OpenAlex
- W2124183503
- Cited by
- 265
- References
- 165
- Citations by year
- 2026: 21 · 2025: 31 · 2024: 31 · 2023: 24 · 2022: 30 · 2021: 24 · 2020: 27 · 2019: 24 · 2018: 15 · 2017: 13 · 2016: 6 · 2015: 6 · 2014: 7 · 2013: 3
- FWCI
- 1.70
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Animals (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Health Sciences › Veterinary › Small Animals › Animal testing and alternatives
- Social Sciences › Law › Animal Law and Welfare
- Social Sciences › Arts and Humanities › History and Philosophy of Science › History of Science and Medicine
- Keywords
- animal experimentation, history of animal research, biomedical research, animal ethics, animal welfare, European history
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