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Tag: "aging" at biology news

Researchers extend mouse lifespan by protecting against free radicals

... lifespan of mice while reducing the impact of the aging process. Their study, which will be published onli...d of reactive oxygen species in particular, in the aging process." This study and others that are able to extend animal lifespan beyond the normal limits ar...

Genetic links could unlock clues to leading cause of blindness

...awson said. "It's difficult to follow closely the aging of a human over a specific period of time," he said. "People wouldn't tolerate a controlled (living) environment for weeks and years." One of the biggest problems researchers have faced is determining how much of a role genetics plays versus lifesty...

Male Combat Veterans Rank High In Heart Disease Risk

...stress and behavioral and physical risk factors in aging men who fought in these earlier conflicts and their counterparts who served in the military but saw no combat or are not veterans. Funded by the National Heart, Lung, and Blood Institute (NHLBI), the LCSES study examined 5,368 black and white men wh...

New lifespan extension genes found

...tion in yeast, Lin said. In yeast, the effects of aging seem to be due to a build-up of toxic circular DNA molecules that accidentally get copied out of ribosomal DNA, an unstable area of the yeast genome that contains hundreds of repeated sequences. The researchers showed that caloric restriction drasti...

Beauty queens urge girls not to sacrifice their bones

...edical specialists from IOF noted that with Asia's aging population, it is expected that the burden of osteoporosis will increase dramatically if no preventive action is taken. Dr Khunying Kobchitt, president of the IOF member society Thailand Osteoporosis Foundation, and professor of Obstetrics and Gynae...

Elderly mice yield clues to the process of growing old

...f programmed cell death that seems to underpin the aging process. Writing today (July 15, 2005) in the jou...s. "We think that the key to what is happening in aging is that as (genetic) mutations or DNA damage accumulates, critical cells die," says Prolla. "These e...

Muscle repair: Making a good system better, faster; implications for aging, disease

...nificantly less than in WT mice. Implications for aging and muscle diseases, and next steps Koh noted that researchers are studying the role of the plasminogen system in repair of different tissues, including liver, lungs and the heart. The plasminogen system may be critical for efficient repair of many ...

Gene loss accelerates aging

...red that the loss of a gene called p63 accelerates aging in mice. Similar versions of the gene are present ... right away was that these p63 deficient mice were aging prematurely," says Alea Mills of Cold Spring Harbor laboratory, who led the research. Mice that are...

After the yeast is gone bacteria continue to develop flavor of sparkling wine

... isolated from both wines. Different phases of the aging process are dominated by different bacteria. Gram-negative bacteria were quickly replaced by Gram-positive bacteria, and after 17 months only Gram-positive bacteria were detected in both sparkling wines. "The products released by the yeast cells aff...

Suppressing growth hormone in early adulthood may prevent cancer

...e no studies of a specific suppression of IGF-1 on aging or age-related diseases. In the current study, Sonntag found that a life-long deficiency of IGF-1 decreased cancer risk by approximately 45 percent and decreased cancer deaths by 12-15 percent. "Besides reducing the incidence of cancer in these rat...

Identical twins may have more differences than meet the eye

...xposure to chemicals, physical activity levels and aging may all contribute to methylation in cells. But they don't understand how changes in DNA methylation occur, or how the process is regulated. The DNA analysis in this study showed that twins who had spent less of their lives together, or had greater ...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

...xposure to chemicals, physical activity levels and aging may all contribute to methylation in cells. But they don't understand how changes in DNA methylation occur, or how the process is regulated. The DNA analysis in this study showed that twins who had spent less of their lives together, or had greater ...

Exercise aside, genes may ultimately dictate seniors' mobility

... decline in aerobic ability, are common aspects of aging that can lead to loss in quality of life, Pahor sa...hairman of the College of Medicine's department of aging and geriatric research. The study's lead author, Stephen Kritchevsky, Ph.D., a professor and direct...

Scientists find a maturity gene in fly

...ists of embryonic development, growth, maturation, aging and then death. We have a good handle on how embryonic development and aging work at a molecular level. But the transition from growth to maturation is poorly understood. If we ...

MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools

...ists of embryonic development, growth, maturation, aging and then death. We have a good handle on how embryonic development and aging work at a molecular level. But the transition from growth to maturation is poorly understood. If we ...

Tiny roundworm's telomeres help scientists to tease apart different types of aging

...nd of all 46 human chromosomes, has been linked to aging and physical decline. Once they are gone, so are w... has often been portrayed as the key to preventing aging and living longer. In their study, Salk scientists Jan Karlseder, an assistant professor in the Regu...

Human cerebellum and cortex age in very different ways

...gy. "We were surprised both by the homogeneity of aging within the cortex and by the dramatic differences in aging between cortex and cerebellum," says Joshua B. Plotkin, a junior fellow in the Harvard Society of Fe...

MicroRNA gene that regulates lifespan found by Yale scientists

...ormation during development also control timing of aging and death, and provide evidence of a biological ti...e of an "intrinsic biological clock" that runs for aging as well as for normal organ development. Included results showed the developmental programs that the...

New clues to the dark side of a key anti-tumor guardian

...er, the mechanisms by which it might contribute to aging and lifespan are not well studied. In work reporte...least in some cell types--may indeed contribute to aging and decreased lifespan. The p53 protein is known to be a critical player in our body's natural def...

Toasty oat aroma influenced by presence of health-linked polyphenols

...ction also occurs in the human body as part of the aging process, in tanning, hardening of the arteries, an...ction also occurs in the human body as part of the aging process, in tanning, hardening of the arteries, and diabetes as well as other diseases. "The polyp...

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