Nerves controlling muscles are best repaired with similar nerves

When repairing severed or damaged motor nerves with a donor nerve graft, surgeons have traditionally used a sensory nerve from another area of the patient’s body. However, these patients often do not fully regain function in the injured area. But now a team of surgeons at the School of Medicine and Barnes-Jewish Hospital has found that repairing a motor nerve in rats with an intact motor nerve yields better results than using a sensory nerve. The research appeared in the March issue of the journal Microsurgery.

Outreach for health

Courtesy PhotoFirst-year medical students spent a week at a Navajo Reservation in Arizona talking with middle- and high-school students about diabetes, obesity and substance abuse.

Estrogen is important for bone health in men as well as women

DXA scans of a male patient with osteoporosisAlthough women are four times more likely than men to develop osteoporosis, or porous bone, one in 12 men also suffer from the disease, which can lead to debilitating – or even life-threatening – fractures. In women, low estrogen levels after menopause have been considered an important risk factor for this disorder. Now research at Washington University School of Medicine in St. Louis has shown that low amounts of active estrogen metabolites also can increase the the risk of osteoporosis in men.

Agent protects cells from lethal effects of radiation even if given after exposure

Researchers at Washington University School of Medicine in St. Louis report they have developed an agent that protects cells from the lethal effects of radiation, regardless of whether it is given before or after exposure. Using this agent in mice, the investigators found that the treatment helped shield rapidly dividing cells that are most vulnerable to radiation-induced death, providing proof in principle that it is possible to fend off radiation damage.

Study to investigate gene’s effect on bone loss in breast cancer patients

Women with estrogen-responsive breast cancer are often prescribed a drug that reduces their estrogen levels. But because estrogen is important to bone health, there is widespread concern about how the estrogen-reducing drugs – called aromatase inhibitors – affect bones. A study at the School of Medicine will investigate bone loss in women taking aromatase inhibitors, and researchers are calling for interested women to volunteer.
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