Genetic :: FDA Clears Genetic Lab Test for Warfarin Sensitivity

The U.S. Food and Drug Administration cleared for marketing a new genetic test that will help physicians assess whether a patient may be especially sensitive to the blood-thinning drug warfarin (Coumadin), which is used to prevent potentially fatal clots in blood vessels.

Tonsil :: Certain tonsil removal technique associated with reduced postoperative pain, bleeding

Patients who have a tonsillectomy using an “intracapsular” technique — which removes at least 90 percent of tonsil tissue, but spares the tonsil capsule — appear to have less postoperative heavy bleeding and pain compared with those who undergo traditional tonsil removal surgery, according to a report in the September issue of Archives of Otolaryngology-Head & Neck Surgery, one of the JAMA/Archives journals.

Brain :: Scientists identify fundamental brain defect, probable drug target in fragile X syndrome

Scientists have discovered how the gene mutation responsible for fragile X syndrome — the most common inherited form of mental retardation — alters the way brain cells communicate. In neurons cultured from laboratory rats, the scientists also were able to reverse the effects of the mutation using a drug targeted to the specific site in an upstream pathway of the defect. The finding could lead to the development of human therapies for this previously untreatable condition.

Sperm :: New cell death pathway involved in sperm development

New research from Rockefeller University and the Howard Hughes Medical Institute uncovers a new pathway that regulates caspase activity in Drosophila sperm, a finding that may provide new opportunities to develop drugs that can alter cell death for therapeutic purposes.

RNA :: Mechanism for the in-vivo transport of siRNA

RNA interference, a natural mechanism that inhibits the gene expression of individual genes in eukaryotic cells, is a major topic in modern biology. However, their potential was usable to only a limited extent in mammals because the mechanism for the uptake of small RNAs was unknown up to now. ETH Zurich biologists have now clarified this, which also opens the door for therapies based on this mechanism.

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