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First high-resolution genetic maps for African American populations

UCLA life scientists and colleagues have produced one of the first high-resolution genetic maps for African American populations. A genetic map reveals the precise locations across the genome where DNA from a person's father and mother have been stitched together through a biological process called "recombination." This process results in new genetic combinations that are then passed on to the person's children.

25 Jul 2011

Humans' desire to kill rats has only made them stronger

Over millennia, mice have thrived despite humanity's efforts to keep them at bay. A Rice University scientist argues some mice have found two ways to achieve a single goal -- resistance to common poison.

22 Jul 2011

Insight into Fragile X Syndrome and autism

Researchers now have a much clearer understanding of how mutations in a single gene can produce the complex cognitive deficits characteristic of Fragile X Syndrome, the most common inherited form of intellectual disability.

22 Jul 2011

Roche's cobas KRAS Mutation Test for colorectal cancer now available in Europe

Roche announced today that the cobas KRAS Mutation Test is now commercially available in Europe for use in colorectal cancer.

22 Jul 2011

Microglia prune connections between neurons

Gardeners know that some trees require regular pruning: some of their branches have to be cut so that others can grow stronger. The same is true of the developing brain: cells called microglia prune the connections between neurons, shaping how the brain is wired, scientists at the European Molecular Biology Laboratory (EMBL) in Monterotondo, Italy, discovered.

22 Jul 2011

Taller women more prone to cancer: Study

New research has shown that taller women could be more prone to suffering from cancer. The British study published online in the medical journal The Lancet on Thursday said cancer risk rose about 16% for every 4-inch rise in height. Increasing height heightened the chances of cancers of breast, ovary, womb, bowel, leukemia and malignant melanoma (skin cancer) the study found.

21 Jul 2011

Researchers discover novel combination of two mutations in a patient with ADHD

Often enough, in science as in life, unexpected knowledge has a personal impact. Researchers seeking rare gene variants in just a few individuals with attention-deficit hyperactivity disorder (ADHD) discovered that one patient had a novel combination of two mutations.

21 Jul 2011

World's best genetic map now built in African-Americans

A group of researchers from the University of Oxford, Harvard Medical School and the University of Mississippi Medical Center has constructed the world's most detailed genetic map, a tool scientists can use to better understand the roots of disease and how DNA is passed generationally to create diversity in the human species.

21 Jul 2011

Researchers develop mouse model of rare human birth defect

A team of researchers from the University of Utah and Brigham Young University has developed a mouse model of focal dermal hypoplasia, a rare human birth defect that causes serious skin abnormalities and other medical problems. This animal model not only provides insight into studying the cause of focal dermal hypoplasia (FDH), but also offers a novel way to study a signaling pathway that is crucial for embryonic development.

21 Jul 2011

Key finding sheds new light on common bleeding disorders

A simple cut to the skin unleashes a complex cascade of chemistry to stem the flow of blood. Now, scientists at Washington University School of Medicine in St. Louis have used evolutionary clues to reveal how a key clotting protein assembles. The finding sheds new light on common bleeding disorders.

21 Jul 2011

Inherited forms of Alzheimer's could be detected long before memory problems develop

Inherited forms of Alzheimer's disease may be detectable as many as 20 years before problems with memory and thinking develop, scientists will report July 20, 2011, at the Alzheimer's Association International Conference on Alzheimer's Disease in Paris.

21 Jul 2011

Computer modeling to predict how peripheral nerve axon responds to electrical stimuli

Researchers at Case Western Reserve University have developed a computer modeling method to accurately predict how a peripheral nerve axon responds to electrical stimuli, slashing the complex work from an inhibitory weeks-long process to just a few seconds.

21 Jul 2011

Gene-based test for distinguishing harmless from precancerous pancreatic cysts

Johns Hopkins scientists have developed a gene-based test to distinguish harmless from precancerous pancreatic cysts. The test may eventually help some patients avoid needless surgery to remove the harmless variety.

21 Jul 2011

Promising results from phase I study of Genentech's GDC-0941 for advanced breast cancer

A new drug targeting the PI3K gene in patients with advanced breast cancer shows promising results in an early phase I investigational study conducted at Virginia G. Piper Cancer at Scottsdale Healthcare, according to a presentation by oncologist Dr. Daniel D. Von Hoff at the 47th annual meeting of the American Society of Clinical Oncology.

21 Jul 2011

Male infertility cause found in defective gene

Researchers have found a new cause of infertility that could allow millions of infertile couples around the world to have a child. The team found a common gene mutation that causes sperm to be far less able to swim through the mucus of the cervix and reach the egg.

20 Jul 2011