Alternative to animal experimentation
Medical book by :Jaikumar pareta
ISBN: 9781310492471
Replacing animal tests does not mean putting human patients at risk. It also does not mean halting medical progress. Instead, replacing animal testing will improve the quality as well as the humaneness of our science.
Thankfully, the development of alternative methods is growing. Due to innovations in science, animal tests are being replaced in areas such as toxicity testing, neuroscience and drug development. But much more needs to be done.
The reasons why animal testing persists are often not scientific. Instead it can be due to conservatism within the scientific establishment – it is easier and more comfortable to simply do what has always been done. Test results on animals can be easily compared to earlier tests on animals to give confidence to scientists. Regulators can adopt a ‘tick box’ approach, divorced from the needs of the real world.
Thankfully, the development of alternative methods is growing. Due to innovations in science, animal tests are being replaced in areas such as toxicity testing, neuroscience and drug development. But much more needs to be done.
The reasons why animal testing persists are often not scientific. Instead it can be due to conservatism within the scientific establishment – it is easier and more comfortable to simply do what has always been done. Test results on animals can be easily compared to earlier tests on animals to give confidence to scientists. Regulators can adopt a ‘tick box’ approach, divorced from the needs of the real world.
Types
of alternatives
Animal studies must comply
with applicable laws and regulations as prescribed by the Animal Welfare Act and the Public Health Service
Policy on Humane Care and Use of Laboratory Animals. FDA endorses the principles of
replacement, reduction, and refinement of the use of animals in biomedical
research.
Cell
cultures
Almost
every type of human and animal cell can be grown in the laboratory. Scientists
have even managed to coax cells to grow into 3D structures, such as miniature
human organs, which can provide a more realistic way to test new
therapies.
Human
cells have been used to create innovative little devices called
‘organs-on-chips’. These can be used instead of animals to study biological and
disease processes, as well as drug metabolism. Devices have already been
produced that accurately mimic the lung, heart, kidney and gut. The ultimate
goal is to use these chips to create a whole ‘human-on-a-chip’.
Cell
cultures have been central to key developments in areas such as cancers,
sepsis, kidney disease and AIDS, and are routinely used in chemical safety
testing, vaccine production and drug development.
Human
tissues
Both
healthy and diseased tissues donated from human volunteers can provide a more
relevant way of studying human biology and disease than animal testing.
Human
tissue can be donated from surgery (e.g. biopsies, cosmetic surgery and
transplants). For example, skin and eye models made from reconstituted human
skin and other tissues have been developed and are used to replace the cruel
rabbit irritation tests. Companies such as Episkin, Mattek and Cell Systems
GmbH now produce these tests in easy to use kits for companies to use to test
their cosmetics and other substances.
Human
tissue can also be used after a person has died (e.g. post-mortems).
Post-mortem brain tissue has provided important leads to understanding brain
regeneration and the effects of Multiple Sclerosis and Parkinson’s disease.
Computer
models
With
the growing sophistication of computers, the ability to ‘model’ or replicate
aspects of the human body is ever more possible.
Computer
models of the heart, lungs, kidneys, skin, digestive and musculoskeletal
systems already exist. They can be used to conduct virtual experiments
based on existing information and mathematical data.
Category: Nonfiction » Health, wellbeing, & medicine » Diseases
Published: Nov. 23, 2015
Words: 3,720
Language: English
ISBN: 9781310492471
Tags: Geetanjali University
Available formats: epub mobi pdf rtf lrf pdb txt html
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