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Biology 2672a

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Considerable medical advances ... Medical use ok if benefits outweigh harm done ... 2 x profs from Medical Sciences. 3 x researchers from Lawson Health research ... – PowerPoint PPT presentation

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Title: Biology 2672a


1
Biology 2672a
  • Animals in teaching and research

2
Vivisection
  • The practice of working on live (rather than
    dead) organisms
  • the science of life is a superb and dazzlingly
    lighted hall which may be reached only by passing
    through a long and ghastly kitchen
  • Claude Bernard (1813-1878)
  • Father of Physiology
  • Coined term Homeostasis

3
There are undeniable benefits to using animals in
research
  • Animal models for diseases or basic science
    phenomena
  • Considerable medical advances
  • Enables exhaustive testing of pharmaceuticals
    (and other things) before use on humans

4
Ethics of using animals as research subjects
Jean-Jacques Rousseau (1712-1778) Animals are
sentient and humans are obliged against cruelty
Descartes (1596-1650) Animals have no souls,
minds or reason
Jeremy Bentham (1748-1832) The capacity to suffer
should be the benchmark for how we treat other
creatures
5
Rise of physiology (and vivsection) in the 19th
Century
  • RSPCA (UK) - 1824
  • ASPCA (USA) - 1866
  • Anti-vivisection society (France)
  • Started in 1883 by Claude Bernards wife (!)
  • Darwin
  • "You ask about my opinion on vivisection. I quite
    agree that it is justifiable for real
    investigations on physiology but not for mere
    damnable and detestable curiosity. It is a
    subject which makes me sick with horror, so I
    will not say another word about it, else I shall
    not sleep to-night. (1871)

6
Modern Views
  • Generally Utilitarian (greatest common good)
  • Need to justify necessity
  • Need to find replacements
  • Peer review
  • Animal use committees
  • Can be viewed as consenting on behalf of the
    animal

7
Animal rights
Peter Singer (1946- )
  • Argues against speciesism
  • Equality is generally based on prescription, not
    fact
  • Medical use ok if benefits outweigh harm done
  • Everybody should be vegetarian or (preferably)
    vegan

8
Animal Testing
  • Safety testing
  • pouring cosmetics in rabbits eyes
  • Now phased out
  • Cell lines (toxicity), human trials
    (hypoallergenic)
  • Still done for most pharmaceuticals prior to
    clinical trials

9
Regulated animal use
  • Canadian Council for Animal Care
  • "The use of animals in research, teaching, and
    testing is acceptable ONLY if it promises to
    contribute to understanding of fundamental
    biological principles, or to the development of
    knowledge that can reasonably be expected to
    benefit humans or animals.
  • Has power to withhold grant agency money
  • Policies are administered locally by the
    University Council on Animal Care (UCAC)

10
The 3R Principle
  • Replace animal models wherever possible
  • Reduce numbers of animals used
  • Refine animal use procedures

11
The 3Rs in Biology 2672
  • Replace animal models
  • Introduction of insect SCP lab (insects arent
    animals by CCAC definitions)
  • Reduce numbers of animals
  • We use mice on rotation minimises numbers
    whilst maintaining relatively low stress for the
    mice
  • Refine Procedures
  • Use tried-and true methods that work fine so
    long as students follow instructions and are
    careful!

12
UCAC
  • Approve use of animals for research and teaching
  • Everything, from handling to invasive surgical
    experiments
  • From acquisition to the point where the animal is
    euthanized
  • Make case-by-case assessments of proposals

Vertebrates, cephalopods, some large crustaceans
13
UCAC not much to say explicitly on teaching
  • Peer review for pedagogical merit shall consist
    of, at minimum, a review at a department level to
    be summarized in the Pedagogical Merit Review
    form and signed by the Chair of the Department
  • Painful experiments or multiple invasive
    procedures on animals conducted solely for
    classroom student instruction, or for
    demonstration of established scientific knowledge
    cannot be justified

14
The Procedure
  • I put together a proposal to use animals in
    teaching
  • Includes names of all TAs and the training they
    will receive
  • Detailed 23 pages long lab manual
  • Informally reviewed by a veterinarian
  • Changes made, formally submitted to AUS
  • Renewal application every year, Full proposal
    every 5th year.

15
The application
  • Describe the purpose of your use of animals
  • Describe the possible replacement, refinement
    and reduction alternatives to animal use, and
    offer justification if these are not employed
  • Indicate how you have determined your animal
    numbers

16
Animal use subcomittee
  • Director, Animal Care UWO
  • Biosafety officer, UWO
  • 2 x profs from Medical Sciences
  • 3 x researchers from Lawson Health research
    Institute
  • 1 x prof from Robarts Institute
  • 1 x prof from Psychology
  • 1 x prof from Biology
  • 1 x technician who works with animal care
  • 1 x grad student
  • 5 x others
  • At least 4 non-users of animals
  • At least three from outside UWO community
  • Meets 11 times/year

17
Scientists as public citizens
  • In performing public funded research, scientists
    are held to higher standards than private
    citizens
  • Fish
  • specified care and monitoring, painless
    euthanasia
  • Vs sport fishing as a private citizen...

18
All very well for medical research what about
non-medical?
  • Establishing benefits can be harder
  • Fundamental biological principles
  • Square peg, round hole
  • e.g. field ecology studies

19
Research animal use in context
  • 2006 CCAC reports 2,535,989 animals used in
    research or University teaching
  • 843,881 Fish (including zebrafish)
  • 910,540 Mice (about 52 in Biol 272)
  • 331,560 Rats
  • Catchable size rainbow trout released in BC lakes
    in 2006
  • 135,745
  • Sockeye Salmon catch 2006
  • 10,106 tonnes (3.3 million 3 kg fish)
  • No stats available for numbers of rats and mice
    killed in pest control operations

20
Our responsibilities
  • Avoid unnecessary pain
  • Avoid wasteful use of animals
  • Respect animals, never treat them with contempt
  • Follow this through to making good use of the
    information
  • Obligation to treat both teaching and research
    data as important

21
Ethics of using non-animal animals and plants
  • A Drosophila experiment could use 20,000 flies
  • Consideration tends to be for population-level
    issues
  • Oversampling
  • Habitat damage
  • Nevertheless, we try to respect the animals we
    work with, and try not to waste life

22
End of Lecture Quiz 3 material
23
Reading for Tuesday
  • Breathing in Air
  • Pp 561-572
  • Pp 575-579
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