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Science News for November 25, 1998


Biochemical Markers Could Help Identify Battered Children

A team led by Patrick Kochanek has identified specific biochemical markers that may help detect child abuse. Preliminary evidence suggests that victims of abuse often have abnormal levels of quinolinic acid in their cerebrospinal fluid, which could reveal whether a parent is lying about the timing of an injury.

SourceNew Scientist·JournalThe New Scientist·DateNov 25, 1998

Umbilical Cord Blood Transplantation - Statement From Claude Lenfant, M.D., Director, National Heart, Lung, And Blood Institute

The largest series of unrelated cord blood transplants confirms the feasibility of transplantation for patients without a matching donor. The study demonstrates success in children and mismatched transplants with reduced acute graft versus host disease incidence.

SourceNIH/National Heart, Lung and Blood Institute·JournalNew England Journal of Medicine·DateNov 25, 1998

Molecular Mechanism For Evolution Described

Researchers at the University of Chicago have discovered a molecular mechanism that allows organisms to evolve new traits in response to environmental stress. The mechanism involves the protein heat shock protein 90 (Hsp 90), which normally keeps genetic variations silent but can reveal them during times of stress.

SourceUniversity of Chicago·JournalNature·DateNov 25, 1998