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Science News for July 21, 2009


'Go to the doctor? Only if I'm really sick ...'

African American men are avoiding disease screening due to concerns that it may threaten their masculinity. The study found that they view being sexually active as an important component of their notion of masculinity, and health-seeking behaviors can interfere with this.

SourceSpringer·JournalJournal of African American Studies·DateJul 21, 2009

For horned lizard, horns alone do not make the species

A study published in Proceedings of the National Academy of Sciences reveals that California's horned lizard diverged into at least three new species when it moved north from Baja California. The findings provide clarity for conservation actions to follow, highlighting the importance of integrating genetic, anatomical and ecological in...

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateJul 21, 2009

Australia discovered by the 'Southern Route'

Genetic analysis reveals Australian Aborigines originated from south Asia, tracing back to Indian populations with exclusive mutations. This discovery supports archeological evidence of human occupation in Australia dating back to approximately 45 thousand years ago.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateJul 21, 2009

Fecal incontinence and quality of life

A study published in the World Journal of Gastroenterology found that fecal incontinence significantly impacts patients' quality of life, affecting lifestyle, coping behavior, depression, and embarrassment. The results show that over 22% of patients experience severe QOL effects due to FI.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateJul 21, 2009

Fighting disease atom by atom

The study reveals the atomic structure of the hepatitis E protein shell, which could lead to new ways to stop the virus. Researchers have identified potential sites on the model for designing drugs that can interrupt the binding process and prevent the virus from attaching to cell receptors.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJul 21, 2009

A drug-dispensing contact lens

Researchers at Boston Children's Hospital have developed a drug-dispensing contact lens that can gradually release medication to the eye. The prototype lens dispensed antibiotic ciprofloxacin for up to 30 days in laboratory testing, with potential applications in conditions like glaucoma and dry-eye.

SourceBoston Children's Hospital·JournalInvestigative Ophthalmology & Visual Science·DateJul 21, 2009

New research finds possible genetic link to cause of pregnancy loss and disorders

Scientists at the University of Tennessee have found that a single mutation in the Bub1 gene can lead to an increased risk of pregnancy loss and disorders such as Down Syndrome. The study suggests that the mutation affects fertility and increases with maternal age, highlighting a potential genetic link to these conditions.

SourceUniversity of Tennessee at Knoxville·JournalProceedings of the National Academy of Sciences·DateJul 21, 2009

When children have breathing problems

A study by UFZ researchers found that air pollution caused by industry has more severe effects on children's health than vehicle exhaust fumes. The research revealed that around a quarter to a third of children in industrial areas experience respiratory problems, compared to half as many in suburban and rural areas.

SourceHelmholtz Association·JournalJournal of Allergy and Clinical Immunology·DateJul 21, 2009

Genetic marker linked to problem behaviors in adults with developmental disabilities

Researchers found a common genetic variation linked to aggression and destructive behavior in adults with developmental/intellectual disabilities. The study suggests that this variation may be associated with increased autism severity in individuals with the gene variant, highlighting the need for further research.

SourceVanderbilt University·JournalAmerican Journal on Intellectual and Developmental Disabilities·DateJul 21, 2009

Genetic tests advertised directly to the consumer

The American College of Clinical Pharmacology warns of the lack of supervision in direct-to-consumer genetic testing, emphasizing the need for clinical pharmacologists to educate patients on potential risks and limitations. Effective government regulation and professional guidance are crucial to ensure safe and informed decision-making.

SourceSAGE·JournalThe Journal of Clinical Pharmacology·DateJul 21, 2009

Ovary removal may increase lung cancer risk

A new study published in the International Journal of Cancer found that women who experienced non-natural menopause are at almost twice the risk of developing lung cancer compared to women who experienced natural menopause. The increased risk was particularly observed among women who had both their ovaries surgically removed.

SourceUniversity of Montreal·JournalInternational Journal of Cancer·DateJul 21, 2009