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Medical News Update from News-Medical.Net - 27th May 2007

Some cancers linked to extremely low frequency electromagnetic fields
//Medical Research News
The researchers opted to study this group, because railway workers in Switzerland tend to change jobs infrequently and are exposed to much higher levels of electromagnetic field radiation than the general population.
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MicroRNAs may increase cancer susceptibility
//Medical Research News
New evidence indicates that small pieces of noncoding genetic material known as microRNAs (miRNAs) might influence cancer susceptibility.
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Tracing the path of depression
//Medical Research News
David Nutt, Professor of Psychopharmacology, said: "The development of one of these radioactive tracers to enable the study of noradrenaline and its related processes in those suffering depression is critical to our proper understanding of this disease.
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Nanocomposite labeled cancer cells can be targeted and destroyed using lasers
//Medical Research News
A nanocomposite particle can be constructed so that it has a mix of properties that would not otherwise happen in nature.
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Discovery of chemical profiles for infectious diarrhoea
//Medical Research News
Academics from the Universities of the West of England and Bristol have found that faeces from healthy people and those with infectious diarrhoea differ significantly in their chemical composition and could be used to diagnose quickly diseases such as Clostridium difficile (C. Diff.).
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High salt intake increases gene activity in the ulcer-causing bacterium Helicobacter pylori
//Medical Research News
Scientists have identified yet another risk from a high-salt diet. High concentrations of salt in the stomach appear to induce gene activity in the ulcer-causing bacterium Helicobacter pylori, making it more virulent and increasing the likelihood of an infected person developing a severe gastric disease.
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T helper cells and depletion in HIV
//Medical Research News
Scientists have refuted a longstanding theory of how HIV slowly depletes the body's capacity to fight infection, in new research published.
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Stem cells may look malignant, not act it
//Medical Research News
Call it the cellular equivalent of big glasses, a funny nose and a fake mustache.
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Tool will revolutionise functional genomic studies in clostridia
//Medical Research News
The genome of the organism that produces the world's most lethal toxin has been revealed.
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New findings on jet lag
//Medical Research News
Circadian clocks regulate the timing of biological functions in almost all higher organisms.
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Most teens' mental health unaffected by nonmarital sex
//Medical Studies/Trials
For a decade, the legislative push for "abstinence only" sex education has suggested that nonmarital sex negatively affects a teen's mental health.
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Could the food we eat be contributing to the continuing rise of antibiotic-resistant infections?
//Medical Studies/Trials
Harmless and even beneficial bacteria that exist in our food supply may also be carrying genes that code for antibiotic resistance.Once in our bodies, could they transmit the resistance genes to disease-causing bacteria?
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Very-low-birth-weight newborns face higher risk of death at community hospitals
//Medical Studies/Trials
More than 20 percent of very small babies who died in California between 1991 and 2000 might have lived had they been born in different hospitals, say researchers at the Stanford University School of Medicine and the Veterans Affairs Palo Alto Health Care System.
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Regular aspirin intake only reduces incidence of colorectal tumors that overexpress COX-2
//Medical Studies/Trials
Aspirin therapy's ability to reduce the risk of colorectal cancer, an association seen in a large number of studies, appears to depend on the drug's inhibition of the COX-2 enzyme, the action that also underlies aspirin's usefulness for treating pain and inflammation.
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Coffee appears to lower the risk of gout
//Medical Studies/Trials
According to the latest research, men who drink several cups of coffee a day reduce their risk of gout.
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Study challenges conventional wisdom about cancer cells
//Medical Studies/Trials
A team of St. Jude investigators challenged conventional wisdom about the eye cancer retinoblastoma by using a mouse model that allowed them to study the tumors as they develop and grow.
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New method predicts hip joint decay from chemotherapy
//Medical Studies/Trials
St. Jude investigators say they have found the best way for predicting when patients will need future surgery to repair hip joints that have deteriorated because of pediatric leukemia or lymphoma treatment.
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Double-standard exists in the way that men and women donors are valued by the fertility industry
//Medical Studies/Trials
When Sociologist Rene Almeling decided to look into the operations of U.S. sperm banks and egg agencies, the UCLA Ph.D. candidate in sociology thought she knew what she would find.
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Scientists 'home in' on new breast cancer genes
//Medical Studies/Trials
Cancer Research UK scientists have isolated five regions of the genome containing genes which can increase a woman's risk of developing breast cancer, reveals a major international study published online in Nature.
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Unhealthy outdoor zones for secondhand smoke
//Medical Studies/Trials
With the growing number of smoking bans in restaurants and bars driving smokers outside, researchers in Athens, Georgia, are hoping to find out whether secondhand smoke from smokers clustered outside these establishments is posing a health hazard of its own.
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Hormone therapy and menopause study
//Women's Health News
When is the best time in a woman's reproductive history to start hormone therapy?
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New breast cancer treatment may dispense with the need for chemotherapy
//Women's Health News
According to the latest research new hormone therapy drugs designed to treat breast cancer may dispense with the need for chemotherapy thus avoiding the nasty side effects associated with the treatment.
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Sling better than colposuspension for stress urinary incontinence
//Women's Health News
A large study by a team of urologists and urogynecologists has found that in a comparison of the two traditional surgical operations for stress urinary incontinence (SUI) in women, using an internal sling to support the uretha was more effective than colposuspension.
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Sleep apnea is associated with gestational diabetes mellitus and pregnancy-induced hypertension
//Women's Health News
Sleep apnea is associated with a greatly increased incidence of pregnancy-induced diabetes and high blood pressure, according to a study presented at the American Thoracic Society 2007 International Conference, on Wednesday, May 22.
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Effects of estrogen therapy with perimenopausal women
//Women's Health News
When is the best time in a woman's reproductive history to start hormone therapy? How does estrogen therapy affect a woman's cognition and mood? What is the most beneficial form of estrogen?
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U.S. parents not in favor of HPV vaccine mandates
//Women's Health News
While debate in several state governments continues to grow over school mandates for Gardasil - a vaccine recommended by the Centers for Disease Control and Prevention for girls ages 11 to 12 that is designed to provide protection against human papillomavirus, or HPV, the virus linked to cervical cancer and genital warts - the majority of U.S. parents have already reached a decision on the issue: They do not want the vaccine to be mandated.
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Women diagnosed with breast cancer should either get exercising or keep exercising
//Women's Health News
This is the message from a new study in Springer's Journal of Cancer Survivorship by Catherine Alfano and colleagues at the Ohio State University.
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Breast MRI may have a role in evaluation of newly diagnosed breast cancers
//Women's Health News
Among women who are newly diagnosed with breast cancer, magnetic resonance imaging (MRI) of the breast appears helpful in determining surgical treatment, according to a report in the May issue of Archives of Surgery, one of the JAMA/Archives journals.
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Surgeries to treat urinary incontinence in women
//Women's Health News
The University of California, San Diego Medical Center along with nine other clinical research institutions across the United States has completed the largest randomized clinical trial to date comparing two commonly performed surgical procedures to treat urinary stress incontinence.
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Moderate alcohol consumption lowers women's risk of heart attack
//Women's Health News
Women who regularly enjoy an alcoholic drink or two have a significantly lower risk of having a non-fatal heart attack than women who are life-time abstainers, epidemiologists at the University at Buffalo have shown.
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