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Why are males in evolutionary overdrive even though they have essentially the same genes as females?

The observation that males evolve more quickly than females has been around since 19th century biologist Charles Darwin noted the majesty of a peacock's tail feather in comparison with the plainness of the peahen's.

15 Nov 2007

Compound of milk thistle shows anti-cancer effects

Recently, scientists demonstrated the anti-cancer effects of silibinin, a major biologically active compound of milk thistle. Being widely used as a folk remedy for liver diseases, milk thistle is safe and well-tolerated, and it protects the liver from drug or alcohol-related injury.

15 Nov 2007

Discovery of key mechanism in bacterial communication

A team of Princeton scientists has discovered a key mechanism in how bacteria communicate with each other, a pivotal breakthrough that could lead to treatments for cholera and other bacterial diseases.

15 Nov 2007

Bars and nightclubs, but not liquor stores, are linked with excessive alcohol consumption

Bars and nightclubs, but not liquor stores, are linked with excessive alcohol consumption and heavy episodic drinking in adults who live nearby, according to a new study from the Pardee RAND Graduate School in Santa Monica, California.

15 Nov 2007

Largest study to investigate risk factors of autism to begin enrolling families

Researchers from Kaiser Permanente and the California Department of Public Health, as well as from five other sites nationwide, will begin enrolling families in the largest study to date investigating the genetic and environmental factors that may cause autism and other developmental disabilities.

15 Nov 2007

Human RecQ helicases, homologous recombination and genomic instability

Two independent papers in the December 1st issue of G&D detail how human RecQ helicases regulate homologous recombination and protect genome stability.

15 Nov 2007

Human embryonic stem cells derived from preimplantation genetically diagnosed embryos

A human stem cell line derived from embryos that were identified by preimplantation genetic diagnosis (PGD) to carry the mutation for fragile X syndrome has provided an unprecedented view of early events associated with this disease.

15 Nov 2007

Hormone orexin links sleep, hunger and metabolism

While investigating how the hormone orexin might control sleep and hunger, researchers at UT Southwestern Medical Center have discovered, to their surprise, that it activates a protein, HIF-1, long known to stimulate cancerous tumor growth.

15 Nov 2007

GlaxoSmithKline implements changes to the US product label for Avandia

GlaxoSmithKline announced today that it is implementing changes to the US product label for Avandia(R) (rosiglitazone maleate), based on an extensive and thorough review by the FDA of myocardial ischemia data on Avandia, the most widely studied oral anti-diabetic medicine available.

15 Nov 2007

Freeze-dried grape powder blocks genes linked to colon cancer

Low doses of freeze-dried grape powder inhibit genes linked to the development of sporadic colorectal cancer, University of California, Irvine cancer researchers found.

15 Nov 2007

Clear link between lack of sunlight and endometrial cancer

Using newly available data on worldwide cancer incidence, researchers at the Moores Cancer Center at University of California, San Diego (UCSD) have shown a clear association between deficiency in exposure to sunlight, specifically ultraviolet B (UVB), and endometrial cancer.

15 Nov 2007

Research confirms the importance of genetic factors in age-associated hearing loss

A new Brandeis University study of twins shows that genes play a significant role in the level of hearing loss that often appears in late middle age. The research, in the Journal of Gerontology Medical Sciences, examined genetic and environmental factors affecting hearing loss in the frequency range of speech recognition.

15 Nov 2007

Petition aims to stem the flood of dangerous drugs reaching Americans

In a petition filed with the U.S. Food and Drug Administration, an international coalition of scientists and doctors seeks to compel the agency to stem the flood of dangerous drugs reaching American consumers by mandating the use of scientifically superior non-animal testing methods when those alternatives exist.

15 Nov 2007

Progress in in food allergy prevention

Progress has been made in food allergy prevention and management according to investigators presenting the latest research at the Annual Meeting of the American College of Allergy, Asthma and Immunology (ACAAI) in Dallas. Important research findings may impact diet restrictions of food allergic patients.

15 Nov 2007

Lonesome people may have lower levels of specific brain hormone

The anxiety and aggression that result from social isolation have been traced to altered levels of an enzyme that controls production of a brain hormone.

15 Nov 2007

Low doses of arsenic disrupt activity of development hormone

A team of Dartmouth Medical School (DMS) researchers has determined that low doses of arsenic disrupt the activity of a hormone critical in development. The finding is further evidence that arsenic at low doses (at levels found in U.S. drinking water in some areas) can be harmful.

15 Nov 2007

Captopril may limit radiation kidney damage in bone marrow transplant patients

Researchers at the Medical College of Wisconsin in Milwaukee have found that the risk of radiation injury in normal tissue after exposure may be reduced by a drug in common use. Their study in press appears in the on line issue of the International Journal of Radiation Oncology, Biology and Physics.

15 Nov 2007

Breakthrough innovation for high sensitivity TB and Malaria diagnostics

At this year's 39th World Forum for Medicine in Dusseldorf (MEDICA, November 14-17), Partec, a globally leading developer, manufacturer and provider of dedicated diagnostic solutions in the response to HIV/AIDS, Tuberculosis and Malaria is presenting a breakthrough innovation for high sensitivity TB and Malaria diagnostics in low- and middle-income countries.

15 Nov 2007

New explanation for how regulatory networks of genes evolved

When ancient retroviruses slipped bits of their DNA into the primate genome millions of years ago, they successfully preserved their own genetic legacy.

15 Nov 2007

Medics worry about ethnic sensitivity

Health professionals worry that a lack of knowledge about different cultures may lead to them being seen as insensitive or inappropriate to patients from different ethnic backgrounds - according to research published today.

14 Nov 2007