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Tag: "age" at biology news

Diabetes research takes wing thanks to long-lived fruit fly

...major reason why generally our bodies falter as we age ?we're literally dinged to death by free radicals. While scientists knew that JNK in a fly cranks up the anti-oxidants, helping to keep the integrity of genes and proteins intact in the same way people hope substances like vitamins C and E might, fe...

Bioengineered tissue implants regenerate damaged knee cartilage

...ed during surgery from 23 patients with an average age of 36 years. After growing the cells in culture for 14 days, the researchers seeded them onto scaffolds made of esterified hyaluronic acid, grew them for another 14 days on the scaffolds, and then implanted them into the injured knees of the study p...

MUHC announces a transplant first in Quebec

...art/liver transplant. The patient, Patrice Dionne, age 54 years, was transferred from the Institut de cardiologie de Quebec (l'hôpital Laval) to the MUHC. The patient received his new heart and liver during a 6-hour operation on April 14, 2006 and was discharged 10 days later. The complex procedure invol...

Mechanism for neurodenegerative diseases linked to transport proteins

...are characterized by symptoms that begin in middle age and by the loss of certain types of neurons through a pattern in which the neuron's terminals die before the cell body. PolyQ genes are expressed in many types of cells, but only neurons are affected. Earlier studies had linked specific neurodegener...

Nanotechnology being used to improve biocompatibility of human prosthetics and implants

As populations of the world age the current trend is that people are not slowing down in their later years. The desire for increased activity among the elderly also means increased demands on medical researchers to come up with better ways to keep them active. In the fields of impl...

Joslin discovers signs of residual islet cell function in people with long-term type 1 diabetes

...so was no significant difference in age, duration, age of onset or long-term glucose control measured by ...175 were female and 151 were male, with an average age of 70 years. The average age of diabetes onset was 13 years and average duration of type 1 diabetes ...

Links between DNA damage and breast cancer studied

...on tended to occur in women in the 33- to 46-years age group, a bracket that corresponds to a known rise ... their occurrence is roughly commensurate with the age at which the incidence of female breast cancer rises. "Collectively," they observe, "the findings re...

Hope I die before I get old?

...e both older and younger adults tend to equate old age with unhappiness for other people, individuals ten...were either between the ages of 21 and 40, or over age 60. All were asked to rate or predict their own individual happiness at their current age, at age 30...

Researcher studies, treats military with 'silent disease'

... disease," Sjogren said. Her patients, ranging in age from 18 to the upper 50s, mostly come from the Northeast because of its proximity to Walter Reed. Thirty percent of the study volunteers had minimal liver disease, Sjogren said. Of the 70 percent with more advanced liver disease, 15 to 20 percent had...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...ancient enzyme." No such evidence can pinpoint the age of Pta, "but these two enzymes always work together," suggesting that they evolved together. The two enzymes' primeval genetic provenance and the simplicity of the three-step cycle, House says, "are absolutely central to the idea." "This long-standi...

Large dinosaurs were extremely hot in their day, UF study finds

...ted all latitudes, and although the climate in the age of dinosaurs 65 (million) to 150 million years ago was much warmer than today, the animals could nonetheless maintain high body temperatures in polar climates with freezing or near-freezing conditions. The advantages of being a 'warm' reptile are tha...

Arctic expedition will investigate alien-like glacier

... may just put us one step closer to answering that age old question: are we alone in the Universe?" Beauchamp discovered the spring in the mid-1990s when he noticed a yellow stain on the snow while passing over the Borup Fiord Pass in a helicopter. He eventually visited the site and noticed the strong s...

Tyrannosaur survivorship -- tough times for teens

...so shows that if the Albertosaurus lived until the age of two, he enjoyed a low death rate until the teen...nd it appears that such a threshold was reached by age two in Albertosaurus sarcophagus, say the research team. The mortality rates remained low until abou...

New flood-tolerant rice offers relief for world's poorest farmers

...to total destruction,depending on the water depth, age of the plant, how long the plantsare submerged, water temperature, rate of nitrogen fertilizer use andother environmental factors. Annual crop loss has been estimated atmore than $1 billion. "For half a century, researchers have been trying to intr...

Genetic snooze button governs timing of spring flowers

...irst evolved some 100 million years ago during the age of the dinosaurs, spread to fill the niches of nature. Spring blooming confers numerous advantages, not the least of which is leafing out and flowering before the competition. But how do the plants know when to flower? "If you carve out that nich...

Today's babies are fatter babies

By examining more than 120,000 children under age 6 in Massachusetts over 22 years, a newly publishe...e of Obesity. "The obesity epidemic has spared no age group, even our youngest children," says Matthew Gillman, MD, senior author of the study and associa...

New research examines genetics of successful aging

...ientists have identified genes related to reaching age 90 with preserved cognition, according to a study ...ributed, along with lifestyle factors, to reaching age 90 with preserved cognition. The study involved 100 people age 90 and older who had preserved cogn...

New findings offer more complete view of breast cancer gene mutations in US population

...a family history of breast cancer occurring before age 45. For BRCA2 mutations, researchers uncovered f...nificant predictors of a BRCA2 mutation were early age of onset (before age 45) in the patient herself or early onset of breast cancer in mother, sisters, ...

Researchers link two more genes to sudden infant death syndrome

...elated cases of SIDS -- in infants with an average age of 3 months old -- that had been referred to Mayo Clinic's Sudden Death Genomics Laboratory for molecular autopsy. In each study, two of the 135 cases possessed mutations in either CAV3 or RyR2. SIDS -- the sudden, unexplained death of an infant u...

Gene expression becomes heterogeneous with age in humans and rats

... accompanies aging is its variability--some people age better than others. However, there has thus far been little or no evidence supporting the existence of similar heterogeneity at the level of gene expression. Lack of such evidence, in turn, gives support to a "programmed aging" hypothesis and argues ...

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