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Little-known cell networks vital to circadian rhythm

Circadian rhythm is the basic 24-hour cycle that involves various behaviors, including sleeping and eating, in all living organisms.

4 May 2007

Fecal microbes high in New Orleans sediments following Hurricanes Katrina and Rita

In a new study documenting the microbial landscape of New Orleans and Lake Pontchartrain in the wake of Hurricanes Katrina and Rita, scientists report that sediments in interior portions of the city appear to be contaminated with fecal microbes, a chronic condition they say persisted in the area before the hurricanes, and that the resulting water quality in the city and in nearshore waters of the lake continues to be impacted by discharges from this contamination.

4 May 2007

New understanding of genetic mutation that contributes to autism

The investigators now know more about how the mutation causes problems with a specific gene and are testing for additional mutations of the same gene in other people with autism.

4 May 2007

Nitric oxide may be the key to why specific drugs for heart failure or asthma lose their effectiveness over time

A naturally occurring molecule in the body appears to control whether certain medications, such as beta adrenergic receptor agonists used in acute heart failure or in inhalers for asthma, lose their effectiveness over time.

4 May 2007

Study looks at effect of methylphenidate on young ADHD drivers

When a song on the radio or the cell phone on the car seat next to a young driver beckon, she may not resist the temptation to turn up the dial or take a call while maneuvering in traffic.

4 May 2007

Scientists work out mechanism underlying asymmetric cell division in nematode worms

When a cell divides, normally the result is two identical daughter cells. In some cases however, cell division leads to two cells with different properties. This is called asymmetric cell division and plays an important role in embryonic development and the self-renewal of stem cells.

4 May 2007

Study shows effectiveness of Peramivir in mouse model of H5N1 virus infection

BioCryst Pharmaceuticals has announced that investigators at St. Jude Children's Research Hospital, Memphis, TN, reported favorable results evaluating peramivir treatment in an animal model of influenza using a highly virulent strain of H5N1 virus (an avian influenza strain that had caused fatal human infection in Viet Nam).

4 May 2007

Lab-on-a-chip speeds proteomics research

In recent years, the science of biology has been dominated by genomics, the study of genes and their functions.

4 May 2007

Bird flu hits Ghana

The World Health Organisation (WHO) has reported the first outbreak of bird flu in Ghana.

3 May 2007

To live longer - eat less!

Scientists have known for a long time that animals fed diets which border on starvation live longer, but they are now saying that a particular gene is linked to calorie restriction.

3 May 2007

11 percent of American women smoke during pregnancy

The negative effects of nicotine exposure to their fetuses and newborns are significant.

2 May 2007

Peramivir shows promise for H5N1 protection

The antiviral drug peramivir might offer humans significant protection during a pandemic of the avian influenza virus H5N1, according to results of mouse studies conducted by investigators at St. Jude Children's Research Hospital.

2 May 2007

Phenoxodiol, an investigational drug shows promise for ovarian cancer

A new study further supports the unique mechanism of action of phenoxodiol, an investigational drug being studied for the treatment of ovarian cancer.

2 May 2007

1758 cases of malaria reported in UK travellers in 2006

1386 of the cases were due to the potentially fatal Plasmodium falciparum which is a major international health risk and which kills more than a million people a year in Africa. 219 were due to Plasmodium vivax which causes a debilitating disease, but is rarely fatal.

2 May 2007

Fred Hutchinson Cancer Research Center establishes new vaccine and disease institute

Fred Hutchinson Cancer Research Center has established a new Vaccine and Infectious Disease Institute to develop and implement prevention strategies for globally important infectious diseases, including HIV, malaria and cancer.

2 May 2007

Higher calcium and vitamin D intake linked to brain lesions in seniors

Elderly men and women who consumed higher levels of calcium and vitamin D are significantly more likely to have greater volumes of brain lesions, regions of damage that can increase risk of cognitive impairment, dementia, depression and stroke.

2 May 2007

Green tea shows potential for HIV-associated dementia prevention

A compound derived from green tea greatly diminished the neurotoxicity of proteins secreted by the human immunodeficiency virus, suggesting a new approach to the prevention and treatment of HIV-associated dementia, also known as AIDS dementia complex.

2 May 2007

Revolutionary treatment for blindness

The first clinical trial to test a revolutionary treatment for blindness in children has been announced by researchers at UCL (University College London).

2 May 2007

Ultra fast and ultra active: the strange life of the extraocular muscles

The eye, often called the window to the soul, may become a window to the mysteries of muscular dystrophy, a debilitating muscle disease that often leads to death in early adulthood.

2 May 2007

Wrapping version of Gleevec fights drug-resistant cancer

A new study highlighted on the cover of this week's issue of Cancer Research finds that the anti-cancer drug Gleevec? is far more effective against a drug-resistant strain of cancer when the drug wraps the target with a molecular bandage that seals out water from a critical area.

2 May 2007