Tag: "lifespan" at biology news
T. rex owes its giant size to the ultimate teenage growth spurt
... colleagues determined T. rex's growth pattern and lifespan
using an innovative technique that could be applie...t adult size. T. rex grew faster but had a shorter lifespan
than an African elephant, the only living land animal of a comparable size. "We can now stop guessi...
Growing pains: T. Rex was teenage giant
...he modern day elephant. But while elephants have a lifespan
of more than 70 years, T. rex lived no more than 30 years. "We now know that T. rex lived fast and died young," said Erickson. Erickson and Peter Makovicky, dinosaur curator at The Field Museum and a coauthor of the study, will join wi...
Study identifies genetics of fat metabolism, red wine link
...can increase the activity of SIR2 and increase the lifespan
of yeast cells up to 70 percent. And it has also been found that SIRT1, a gene found in both mice and humans, has essentially the same function as SIR2 and the same reaction to stimulus by resveratrol. In trying to determine the molecular basis for t...
Gene alteration points to longevity, thinness
...d find compounds to control that level. "The human lifespan
is a phenotype determined by multiple genes," says...ryo to adult in about three days and has a maximal lifespan
of about four weeks. Dr. Fei cloned all three of the acid transporters in the C. elegans, knocked d...
In the obese, metabolic adaptations post-weight loss lead to regaining of shed pounds
...elect obesity-prone rats, coupled with the shorter lifespan
of the test animals and a better ability to control environmental conditions, offers researchers the opportunity to examine the metabolic state of an obese rat. A New Study This is the framework of a study performed through an assessment of indir...
Fat cells could provide the key to a longer life
...t reducing the activity of the IIS pathway extends lifespan
in fruit flies, mice and the worm C. elegans. But ...tudies in rats have shown restricting diet doubles lifespan
but the pay off is reduced fertility. Elsewhere, groups have looked at mutations such as the DAF-2 ...
Life goes on without 'vital' DNA
...y measured, including growth, metabolic functions, lifespan
and overall development. "We were quite amazed," says Rubin, who presented the findings at a recent meeting of the Cold Spring Harbor Laboratory in New York. He thinks it is pretty clear that these sequences have no major role in growth and developm...
Researchers establish first molecular link between eating and aging
...t protein, allowing human beings to get the longer lifespan
and other benefits of extreme caloric reduction wi... for decades that controlled famine can extend the lifespan
of mammals by as much as 50 percent and that those long-lived, lean mammals don't get the diseases o...
Biology of aging
...d inside the fat cells of the fruit fly, the fly's lifespan
increases significantly, according to new research conducted at Brown University. A similar phenomenon has already been observed in worms, according to Brown biology professor Marc Tatar. But never before, Tatar says, has it been seen in fruit flies ...
Health risks of phthalates
...an take in on a daily basis over his or her entire lifespan
without any harmful effects. These findings have found great resonance not only in the scientific world but also among German and European authorities. The Scientific Committee on Toxicity, Ecotoxicity and Environment (SCTEE) of the European Commiss...
UN study shows environmental consequences from ongoing boom in personal computer sales
...of a high-energy manufacturing process and a short lifespan
raise its lifetime environment-related energy impa...ctice, turning computers on and off shortens their lifespan
only after around 20 years of use, not relevant for most equipment. Spurred by the EnergyStar certi...
Biochemical clues to long lifespan revealed
...have discovered how two key cellular influences on lifespan
work together, providing insights that may help reveal aging mechanisms in humans. The findings extend longevity research from yeast and worms into mammals, and suggest that longer life results, at least in part, from biochemical interactions that b...
Symposium examines the growing influence of aerosols on climate
... scientists are now studying. Somerville says the lifespan
of aerosols is typically weeks rather than decades. That characteristic leads to significant impacts in specific regions, in contrast to the long life of some greenhouse gases and their resulting long-term global influences. In addition to climate an...
JCI Table of Contents, January 15 2004
...ated diseases, improved symptoms and increased the lifespan
of Hexb-/- mice. These results support the novel concept that autoantibodies generated during the course of the disease are involved in neurodegeneration by causing apoptosis of the neuron. The data also provide a target for the development of novel ...
A little stress may be good for you
...pressed. When heat shock factor was overexpressed, lifespan
increased. The results suggest that heat shock factor has significant beneficial effects to the organism as a whole. "The heat shock response is identical in all life on Earth," said Morimoto, who was the first to clone a human heat shock gene in...
Red sea urchins found to live up to 200 years
.... The studies show red sea urchins can have a vast lifespan
surpassing that of virtually all terrestrial and most marine animal species, and seem to show almost no signs of senescence, or age-related dysfunction, right up until the day that something kills them. "No animal lives forever, but these red sea ur...
Gene controls age at onset of Alzheimer's and Parkinson's diseases
...'s or Parkinson's diseases beyond the normal human lifespan
would effectively prevent them in patients at risk for the disorders, she added. Alzheimer's disease is the most common cause of dementia among people over the age of 65, affecting up to 4 million Americans. Parkinson's disease -- characterized by t...
Researchers discover genes that distinguish human, nonhuman primate brains
...lp researchers understand why humans have a longer lifespan
than other primate species and yet are so vulnerab...e. "It is probable that the combination of long lifespan
and high neural activity makes humans particularly vulnerable to neurodegenerative disease," said Ma...
JCI Table of Contents, September 15, 2003
...https://www.the-jci.org/press/18797.pdf T cell lifespan
during HIV infection Scientists have long held th...iated with a high rate of virus turnover and short lifespan
of infected cells. This suggested that HIV infection of susceptible CD4+ T cells led to such high ra...
UC Santa Barbara discovers cell survival gene may lead to treatments for degenerative diseases
... survival, genes such as ICD-1 may help to prolong lifespan
anddecelerate the aging process....
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