Navigation Links
What animals can tell us about hemorrhage, organ transplants and aging

B>No fountain of youth -- yet

Human life expectancy has been greatly enhanced by advances in disease prevention and treatment. But what do we know about how and why we age, and can we slow the aging process?

In the symposium, "Comparative biology of aging in long-lived animals" scientists will compare the physiology of a variety of long- and short-lived species to understand how they age at different rates, said Deborah Kristan of California State University at San Marcos. Kristan will co-chair the session with Rochelle Buffenstein of the City College of New York.

Much of the early aging research was done on short-lived animals, because it was easier to study a complete life span, Kristan said. But physiologists have recently turned their attention to long-lived animals. Some of the aging theories to be discussed during the symposium:

  • DNA damage and repair. Short-lived animals may suffer more damage to their genes and have a more difficult time repairing the damage than long-lived animals, the theory goes. Mice, a short-lived species, have a high occurrence of cancer, which is related to damage to the genes, while mole-rats appear to be cancer-resistant, Kristan said. On the other hand, long-lived animals, including humans, not only suffer less DNA damage when exposed to damaging agents, they have a greater ability to repair the damage when it occurs, Buffenstein said.

  • Oxidative stress. The prevailing theory has been that oxidative stress -- damage caused to cells by rogue oxygen atoms known as reactive oxygen species -- shortens lifespan. Animals that could best prevent reactive oxygen species (ROS) generation, neutralize them, or repair the damage it causes, would live the longest, the theory goes. Buffenstein's research with naked mole rats, the longest-lived rodent known, may cause physiologists to modify this theory.

  • Metabolic rate. In theory, the higher the species' metabolic rate, the
    '"/>


Source:American Physiological Society


Page: 1 2 3 4

Related biology news :

1. Plants, animals share molecular growth mechanisms
2. Elephants imitate truck noises, other animals
3. Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals
4. Gene therapy for Parkinsons disease moves forward in animals
5. Use of PET can reduce, may eliminate more strenuous drug development trials with animals
6. Undesirable expatriates: Preventing the spread of invasive animals
7. Two new retroviruses—transmitted from animals—identified
8. Stem cell therapy successfully treats heart attack in animals
9. More animals join the learning circle
10. Proposal would allow wild animals to roam North America
11. Research suggests fitness of Florida panthers improved by limited breeding with Texas animals

Post Your Comments:
(Date:11/6/2009)...lly live in harmony with their arboreal hosts. But...pace in their trees of choice, the ants can get de...published in the November issue of the American N...e into live trees, and it reopens a centuries-old .... , Ants and certain species of plants and trees...
(Date:11/5/2009)...of Biology Teachers (NABT) will recognize Leonard ...Naugatuck Valley Community College (NVCC) in Water...on Award during the NABT annual professional devel...n Denver, Colorado. , The Evolution Education Aw...ological Sciences,(AIBS) and Biological Sciences ...
(Date:11/4/2009)...ientists are reluctant to officially endorse green...nues to grow about its protective effects, includi...vention Research , a journal of the American Assoc...duction in oral cancer. , Vassiliki Papadimitra...ment of Thoracic/Head and Neck Medical Oncology at...
Breaking Biology News(10 mins):Ants are friendly to some trees, but not others 2Biologists, educators recognize excellence in evolution education 2Does green tea prevent cancer? Evidence continues to brew, but questions remain 2Scholar unconvinced new lie detection methods better than old ones 8689 1Scholar unconvinced new lie detection methods better than old ones 8689 2Scholar unconvinced new lie detection methods better than old ones 8689 3Scholar unconvinced new lie detection methods better than old ones 8689 4ClearTrial to Chair Session at DIA 45th Annual Meeting on 26quot 3BEffective Operational Planning for Adaptive Clinical Trials 26quot 3B 12415 1ClearTrial to Chair Session at DIA 45th Annual Meeting on 26quot 3BEffective Operational Planning for Adaptive Clinical Trials 26quot 3B 12415 2ClearTrial to Chair Session at DIA 45th Annual Meeting on 26quot 3BEffective Operational Planning for Adaptive Clinical Trials 26quot 3B 12415 3Kashi Company Debuts Heart to Heart 28TM 29 Whole Grain Crackers 47606 1Kashi Company Debuts Heart to Heart 28TM 29 Whole Grain Crackers 47606 2Kashi Company Debuts Heart to Heart 28TM 29 Whole Grain Crackers 47606 3
...TC Bulletin Board: STIY), a leader in electro-stun... Sheriff,s Office (CCSO) Caldwell, ID has,purchase...Device. CCSO is a,329-man department., Lt. Daren ... product,and was seeking alternatives that would b... these tough times, budget of course is an importa...
...w online magazine dedicated to covering the global...ale.edu . Edited by Roger Cohn, the former editor ...nment 360 aims to become one of the leading Web si...vironmental issues of the day. , The magazine,s i...nmental advocate and author, Bill McKibben; New Yo...
... for scientific know-how than in finding new ways ...ices, an uncertain oil supply, increasing demand f...imate change have made identifying and developing ... , For Biodesign Institute researcher Bruce Ritt... significant opportunity for innovation and fresh ...
Other Biology News:Canyon County Idaho Sheriff's Office to Purchase Stinger S-200s 2Yale Environment 360 magazine launches online 2Biodesign's Rittmann offers promising perspectives on society's energy challenge 2Biodesign's Rittmann offers promising perspectives on society's energy challenge 3
(Date:11/7/2009)...v. 7, Research projects in the are...s this evening, as Tim Kunisky of Livingston, NJ a...of Audubon, PA received the highest honors at the ... in Math, Science & Technology, the nation,s p...ttp://www.newscom.com/cgi-bin/prnh/20070904/SIEMEN...
(Date:11/6/2009)...6 Myriant Technologies LLC ("Myria...facturer of renewable bio-chemicals, Uhde Corpora...der Uhde GmbH, one of the world,s leading engineer...iance for the engineering, procurement & const...plants based on renewable feedstocks. The executi...
(Date:11/6/2009)...ewswire-FirstCall/ - Oncolytics Biotech Inc. (TSX:...today announced updated results from a Phase II st...rcomas metastatic to the lung in a poster presenta... Society Meeting held in Miami Beach, Florida, fro...titled "A Phase II Study of Intravenous REOLYSIN (...
(Date:11/5/2009)...ov. 5 GenVec, Inc. (Nasd...for the third quarter ended September 30, 2009. Ge...r share) for the three months ended September 30, ... per share) in the comparable quarter of 2008. For...s net loss was $14.1 million ($0.15 per share), co...
Breaking Biology Technology:Mathematics and Biochemistry Research Earn Top Prize at Nation's Premier High School Science Competition 2Mathematics and Biochemistry Research Earn Top Prize at Nation's Premier High School Science Competition 3Mathematics and Biochemistry Research Earn Top Prize at Nation's Premier High School Science Competition 4Mathematics and Biochemistry Research Earn Top Prize at Nation's Premier High School Science Competition 5Mathematics and Biochemistry Research Earn Top Prize at Nation's Premier High School Science Competition 6Myriant Technologies LLC, Uhde Corporation of America and Uhde GmbH Announce Alliance for Engineering, Procurement & Construction of World Scale Renewable Succinic Acid Plants 2Myriant Technologies LLC, Uhde Corporation of America and Uhde GmbH Announce Alliance for Engineering, Procurement & Construction of World Scale Renewable Succinic Acid Plants 3Oncolytics Biotech(R) Inc. Collaborators Present Positive Phase II Sarcoma Trial Results at CTOS Annual Meeting 2Oncolytics Biotech(R) Inc. Collaborators Present Positive Phase II Sarcoma Trial Results at CTOS Annual Meeting 3GenVec Reports Third Quarter 2009 Financial Results 2GenVec Reports Third Quarter 2009 Financial Results 3GenVec Reports Third Quarter 2009 Financial Results 4GenVec Reports Third Quarter 2009 Financial Results 5GenVec Reports Third Quarter 2009 Financial Results 6
...n. Remember that word? It was as popular in Web ci...tain vendor circles. The long and short of it was ...nd let suppliers sell directly to consumers, eithe... loop would take a slice of the middle-mans cut, s...sumers. A real win-win situation as long as you di...
...ic stem-cell research, policymakers and investors ... answer is no. But among those states poised to co...onsin may be the best positioned for success. , ,T... Gov. Jim Doyle is not aimed at advancing stem-cel...sciences that may yield advances across a much bro...
...ike the roads and all the highways. Somehow there ... some drive taxis, others drive Ferraris orrace tr... and so are the maps. Thank heaven. , ,This brings...nternet ever so underutilized and why is 90 percen...s it because this highway is considered free and t...
Other Biology Technology:A funny thing happened on the way out of the back office 2A funny thing happened on the way out of the back office 3Life-science research plan is about more than stem cells 2Life-science research plan is about more than stem cells 3Global Internet branding of technology companies 2Global Internet branding of technology companies 3
Cassette, Xba I from Takara Mirus Bio
Cassette, Hind III from Takara Mirus Bio
DryStrip aligners from GE Healthcare, formerly Amersham Biosciences
Cassette, Sal I from Takara Mirus Bio
Biology Products: