Tag: "hypothesis" at medical news

Researchers identify key risk factor for cataracts

...ar cataracts. "Those findings helped us form the hypothesis that oxygen might somehow be toxic to the lens," B...y strong effect of vitreous liquefaction." Beebe's hypothesis is that when the vitreous gel separates from the retina or begins to break down and liquefy, it allo...

'Science' showcases research on forgetting

...s. Nevertheless, they also provide a well-grounded hypothesis for how some people may come to forget unwanted memories of unpleasant life experiences. "To me what's most important is achieving a better understanding of how we learn to adapt mental function in response to traumatic life experience," Anderson exp...

Taking vitamin D supplements lowers risk of multiple sclerosis

...ncreases the farther you get from the equator, one hypothesis has been that sunlight exposure and high levels of vitamin D may reduce the risk of MS," said study author Kassandra Munger, MSc, of Harvard School of Public Health in Boston, MA. "This is the first prospective study to look at this question. "The...

Taking vitamins to lower amino acid level in blood does not reduce the risk of recurrent stroke

...vel with vascular risk, further exploration of the hypothesis is warranted and longer trials in different populations with elevated total homocysteine may be necessary," the researchers conclude....

Early fevers associated with lower allergy risk later in childhood

...e one of the reasons for this trend." "The hygiene hypothesis is widely recognized but largely unproven," says K... NIAID. "The findings of this study strengthen the hypothesis and, after more research, could lead to preventative therapies for asthma and allergies." The author...

Young people prone to type 2 diabetes exhibit alterations in mitochondrial activity

... the control group. "These data support the hypothesis that insulin resistance in young, lean, healthy in... exercise training. "These results support the hypothesis that nuclear encoded genes that regulate mitochondrial biogenesis may be an important genetic cause ...

Insulin decreases inflammation, aids clot-busting drugs in heart attack patients, UB study shows

...ack and stroke. The current findings prove that hypothesis to be correct, Dandona said. The study involved 32 patients who came to the emergency department of Kaleida Health's Millard Fillmore Hospital in Buffalo suffering from a heart attack. Patients were assigned alternately to an insulin group or contro...

UCSD's Dr. Leon Thal to receive Potamkin Prize, one of neurosciences' highest honors

...ia, he began aggressively pursuing the cholinergic hypothesis of Alzheimer's disease in the 1970s. After investigations in the laboratory using rat and other models, he translated these studies to humans and subsequently performed clinical trials using choline, lecithin and other precursors of acetylcholine. ...

Progenitor cells predict heart disease severity

...el disease had many fewer EPCs, which supports our hypothesis that these cells play an important role in protecting blood vessels," said cardiologist Geoffrey Kunz, M.D., of the Duke Clinical Research Institute. "If you don't have enough of the cells, the ongoing damage to the endothelium from traditional risk ...

'Neutraceuticals'...coming soon to a dentist near you?

...e presented on all aspects of this work, and a new hypothesis supporting a role for reduced glutathione and total anti-oxidant deficiency in periodontal disease pathogenesis will be proposed. This opens up the potential for a new generation of novel, dual-action host-modulation therapies, or "neutraceuticals", ...

A new hypothesis about Alzheimer's disease

...hinking About Disease in General To examine the hypothesis that these metabolites may be the root cause of Alzheimer's, Kelly and his colleagues examined the post-mortem brains of Alzheimer's patients and compared these to age-matched controls. They found evidence of atheronals in the brains of both the Al...

Study supports new theory for nicotine's protective effect against neurodegenerative disorders

...r lost in Alzheimer's disease. The prevailing hypothesis among researchers is that nicotine helps protect the brain by binding to nicotinic acetylcholine receptors that sit on the end of nerve terminals. This action by nicotine, similar to turning up the volume of a radio signal, causes brain cells to incr...

UCSF scientists show prion shape affects nature of infection

...existence of prion strains with the "protein-only" hypothesis of prion propagation, scientists had proposed that a single protein can misfold into multiple different infectious conformations: one for each different type of prion strain. The new finding confirms this view. It shows that shape change accounts for...

Biology not behaviour could explain reduced risk of HIV infection for circumcised men

...Is. These epidemiological data lend support to the hypothesis that male circumcision protects against HIV-1 infection primarily due to removal of the foreskin, which contains a high density of HIV-1-specific cellular targets, including CD4+ T-lymphocytes and Langerhans' cells, which are easily accessible to the...

Researchers: Diet a significant factor in reducing risk of three common cancers

...ark department of epidemiology, Ahn evaluated this hypothesis in a population-based, case-control study of 1,037 women with breast cancer and 1,086 healthy subjects in Nassau and Suffolk Counties, N.Y., conducted originally by Marilie Gammon, Ph.D., and colleagues. Each woman was interviewed at home to assess ...

Exercise improves cancer survival, reduces cancer risk, scientists say

...Women's Hospital and Harvard University tested the hypothesis that physical activity increases survival rates among women with breast cancer. "We already knew that exercise improves the quality of life after a breast cancer diagnosis," said lead investigator Michelle D. Holmes, M.D., Dr.P.H., "but litt...

Jefferson researchers discover novel gene profile that may identify colon stem cells

...c stem cell will give us a tool to investigate the hypothesis that stem cell overpopulation is the key to colon cancer initiation," says Bruce Boman, M.D., Ph.D., director of the Division of Genetic and Preventive Medicine at Jefferson Medical College of Thomas Jefferson University in Philadelphia and Jefferson...

Has cricket helped to unite South Asia?

...uthors. They believe that these data support their hypothesis that a single shot had an enduring influence. "Now India must have a landmark victory of its own it may have already," they conclude....

Norepinephrine important in retrieving memories

...y arousing times. "Indeed, we set out to test that hypothesis with our norepinephrine-deficient mice," says Thomas. "We expected to see a difference in amygdala-dependent behaviors between the mutants and controls if it were emotional memory, in general, that was being affected by the absence of norepinephrine....

Other highlights in the April 7 JNCI

...vigorous exercise. "Our data not only support the hypothesis that elevated long-term insulin production is one underlying mechanism to link dietary and lifestyle risk factors with colorectal cancer risk but also provide a strong biologic argument that avoiding or reducing the modifiable risk factors could eff...

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