stem cells & cloning 3/23/05 bio ethics timeline and controversies
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Stem Cells & Cloning 3/23/05
Bio EthicsTimeline and
Controversies
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What is Bio-Ethics?
• The study of the ethical and moral implications of new biological discoveries and biomedical advances, as in the fields of genetic engineering and drug research
• Examples?
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Why Bioethics?
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Current Bioethical Issues
Check the local news paper Stem cells (state, national, international) Genetically Engineered Organisms Knowing your genes In vetro fertilization – choosing your child's
genes and characteristics Chemicals exposures – human health Environmental health
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“The Commons”
The Tragedy of the CommonsBy Garrett Hardin, Science, 1968
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"Biology combined with diverse humanistic knowledge forging a
science that sets a system of medical and environmental
priorities for acceptable survival.“Global Bioethics (1988)
Bioethics
-------- 1911 - 2001 --------
Van Rensselaer Potter
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1860’s - Scientific method in medicine, Gregor Mendel
1928 - Penicillin discovered – widely used WWII
1920’s - Lead in gasoline, lead in paint
1931 - 30 states had sterilization laws on books
1932 - Tuskegee syphilis study initiated
1947 - Nuremberg - The Doctors Trial
1952 - First open heart surgery & Chlorpromazine
1953 - Structure of DNA – Watson & Crick
60’s - Thalidomide, mercury, chronic hemodialysis, amniocentesis, informed consent, IRB’s
70’s - Hastings Center founded, bioethics defined, Tuskegee noticed
Ethics and Science
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1973 – Roe V. Wade Unrestricted access to abortion
1978- First Test Tube ever born
80’s - Recombinant microorganism could be patented, lead is harmful to developing brain
90’s - molecular biology, sequencing of human genome (other species), Jurassic Park
1996- Dolly the sheep is the first Mammal ever cloned
00’s - US stem cell research restricted
2003- Human Genome project complete
? - Human cloned?
Ethics and Science
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Human Clones?
Are there human clones?
Yes – Identical Twins(Time 2.19.01)
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Cloning Defined
• What is cloning?• Asexual reproduction
• Examples?• Bacteria, fungus• Plants – cutting – potato• Farm animals
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Cloning Dolly
1997 - 2003
(Roslin Institute http://www.roslin.ac.uk/library/)
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Cloning A Sheep
(Roslin Institute http://www.roslin.ac.uk/library/)
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IVF – In Vitro Fertilization Baby conceived in a test tube and
implanted in a Uterus Available since 1986 About 100,000 IVF kids in U.S. Often creates extra embryos some
would like to use for Stem Cell research.
U.S. - About 400,000 frozen embryos (unregulated)
England – 52,000 (regulated by government)
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Controversies:
Should a mother be legally liable for drinking or doing drugs while pregnant? This of course would cause harm to their unborn child.
Opinion?
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Controversies:
• Should you be allowed to genetically modify your children before they are born to prevent disease?
• What about to change eye color, make them taller, stronger, smarter, better behaved?
• Opinion:
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Controversies:
• Should college students be forced to get the meningitis vaccine?
• Opinion
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Controversies:
• Should food and chemical corporations genetically modify food to yield more product, make food more nutritious, or make food taste better? Would you eat this food?
• Opinion
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Controversies:
• Should people be allowed to sell their extra kidney or a portion of their liver to a person in need of a transplant? This is currently illegal
• Opinion