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Science News for January 31, 2000


Weizmann Institute scientists devise an approach for 'recruiting' an immune system response to partial spinal cord injuries

Researchers hope to achieve a treatment that prevents total paralysis after partial spinal cord injury by adding T-cells to the immune response. In laboratory animal tests, rats with partial spinal cord injuries regained motor activity in their paralyzed legs, while untreated rats developed increasing paralysis.

Salmonella's molecular mimics may spark arthritis

Researchers at Johns Hopkins Medicine found that immune system cells can attack normal cells carrying mimic molecules, leading to autoimmune diseases like arthritis. The study suggests subtle changes that could underlie many autoimmune diseases and offers a starting point for investigating environmental or genetic triggers.

SourceJohns Hopkins Medicine·JournalNature Medicine·DateJan 31, 2000

Size of brain linked to violence

Researchers found that men with Antisocial Personality Disorder have significant deficiencies in the prefrontal cortex, a brain region enabling moral sensibilities and self-restraint. The study bolsters the link between damage to this region and the acquisition of antisocial behavior.

SourceUniversity of Southern California·JournalArchives of General Psychiatry·DateJan 31, 2000

Gerhard Hess prizes awarded

Eight scientists have been selected for the Gerhard Hess prize for their groundbreaking work in humanities, biology, and medicine. The winners include Dr. Martin Wallraff for his critical edition of a Christian author's chronography, and Dr. Thomas Behr for developing radioimmunotherapies to treat tumours.

Smokers benefit more from vitamin C supplementation than non-smokers

A study published in the American Journal of Clinical Nutrition found that smokers who received vitamin C supplements showed a substantial 3-fold increase in vitamin C levels, while nonsmokers and placebo recipients showed minimal changes. Vitamin C is significantly depleted by smoking, making supplementation beneficial for smokers.

SourceAmerican Journal of Clinical Nutrition·JournalAmerican Journal of Clinical Nutrition·DateJan 31, 2000