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Tag: "delayed" at biology news

Aging cells, aging body: Fresh evidence for a connection

...g cells do ?and are associated with skin wrinkles, delayed wound healing, weakened immune system response and age-related diseases such as cancer. "There is good evidence that senescent cells are not benign," Sedivy said. "But until now, no one has been able to confirm that they exist in appreciable numbers...

Pittsburgh researchers discover that certain chemicals in the blood may indicate brain injury

...ders to limit medical complications as a result of delayed diagnosis and minimize re-injury to infants by preventing them from returning to an unsafe environment. This also can help protect siblings who may be living in the same violent environment." The study involved 98 infants who presented to Children's...

Skin disease common among Hispanic farmworkers in North Carolina, research shows

...ible needs to be dispelled," he said. "Second, the delayed effects of some risk factors, such as sunlight exposure, need to be stressed." ...

Pitt professor's theory of evolution gets boost from cell research

...lier. Determining the mechanism that causes those delayed expressions of change is Schwartz's major contribution to the evolution of the theory of evolution. The mechanism, the authors explain, is this: Environmental upheaval causes genes to mutate, and those altered genes remain in a recessive state, sprea...

Travelers can avoid jet lag by resetting their body clocks

...tabolism. This treatment can also help those with delayed sleep phase syndrome (DSPS), a persistent condition that results from a misalignment between a person's internal biological clock and the external social environment. Both bright light and melatonin have successfully been used in laboratory and fiel...

Brainstem blocks pain to protect key behaviors

...inactivate the VMM. This completely eliminated the delayed response to pain. "This is the best evidence so far on the biological significance of OFF cell activity," said UCSF's Fields, who was not connected with the study. "It is a major step in understanding the neurobiological mechanisms of decision maki...

Cord blood cells may widen treatment window for stroke

...wn as apoptosis, or programmed cell death. "This delayed death would permit more time to deliver neuron-sparing treatments than originally thought," Dr. Willing said. The USF researchers continue to investigate the ways cord blood cells aid stroke recovery in animals, and will begin a study to determine ...

New technique multiplies life span in simple organisms

...that the mutations that cause human cancers can be delayed or prevented," Longo said. "Notably, mutations that increase the activity of human homologs of the yeast SCH9 and RAS2 genes play central roles in many human cancers." Homologs are genes descended from a common ancestral DNA sequence. Joining with ...

Gene that helps mosquitoes fight off malaria parasite identified

...pheles gambiae mosquitoes, removing the SPRN6 gene delayed the process of parasite lysis, whereby the mosquito rids itself of the parasite. "This study furthers our knowledge of the malaria-parasite lysis in mosquitoes. It may help provide better tools for controlling the disease in the future," said lead a...

Methamphetamine Abuse, HIV Infection Cause Changes in Brain Structure

...processing, attention/working memory, learning and delayed recall, abstraction/executive functioning, verbal fluency, and motor functioning. They observed that methamphetamine abuse is associated with increases in the volume of the brain’s parietal cortex (which helps people to understand and pay attention ...

Hormones and growth: The control of body size and developmental growth rate in fruit flies

...e prothoracic gland prevented ecdysone release and delayed development, creating flies that are much larger than normal. On the basis of their findings, the investigators conclude that Ras activity in the prothoracic gland regulates body size and developmental rate by regulating ecdysone release. In the sec...

A novel method to measure circadian cycles

...lly linked sleep disturbances such as advanced and delayed sleep phase syndromes. They may also use this test to hone in on the genetic mechanism responsible for such conditions. Outside the realm of medicine, future genetic studies of circadian rhythm may exploit the method developed by Schibler and colleag...

Investigating 'brain shrinkage' in alcoholics

...coholism, are much more affected by immediate than delayed rewards. A hallmark of addictive substances is that they provide an immediate reward in the intoxicating experience. When actively drinking, an individual's inhibition processes become impaired and can further contribute to poor decisions and excessi...

Asymptomatic HIV babies could use earlier treatment

...they found that any type of antiretroviral therapy delayed disease progression and enhanced survival. “We’ve clearly shown that early treatment of asymptomatic infants—no matter what it is—makes a big difference in preventing or delaying the progression of the disease,?said Maldonado. “Now we have to move f...

U. Iowa researchers improve Huntington's disease symptoms in mice

... such an extent that either disease progression is delayed or possibly even disease onset is prevented." It may even be the case that a partial reduction of toxic protein levels allows the brain cells' machinery to "catch up" with the disease-causing protein and clear out the damage caused by the mutant pro...

Thai spice helps cut blood sugar swings

...of insulin to deal with the 'meal.' "Finding this delayed absorption is a completely new phenomenon and one that might be useful to follow up: why is it delayed and how might this affect humans?" Wielinga reported. But he warned that "we don't know how this wil...

Scientists reveal the shape of a protein that helps retroviruses break into cells

... rates before the main event and was followed by a delayed recovery that lasted for millions of years. New research by two University of Washington scientists suggests that a sharp decline in atmospheric oxygen levels was likely a major reason for both the elevated extinction rates and the very slow recovery...

Low oxygen likely made Great Dying worse, greatly delayed recovery

... rates before the main event and was followed by a delayed recovery that lasted for millions of years. New research by two University of Washington scientists suggests that a sharp decline in atmospheric oxygen levels was likely a major reason for both the elevated extinction rates and the very slow recovery...

Report that delayed motherhood decreases life expectancy of mouse offspring

...er by a team of Spanish scientists indicating that delayed motherhood in mice results in shorter life expecta...other potential negative effects on offspring from delayed motherhood have been only anecdotal. In what the editors of Biology of Reproduction feel will be a ...

Taking the piste out of Alpine vegetation

...d early-flowering species declined. This is due to delayed snow-melt in areas covered with artificial snow, and the fact that artificial snow is made from river and lake water which contains more minerals and other chemical compounds than natural snow. The findings are particularly important as ski resorts ...

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