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Science News Archive 2000 - Page 40


Page 40 of 66

Treating hypertension in the patient with type 2 diabetes: Statement by Claude Lenfant, M.D., Director, National Heart, Lung, and Blood Institute

The National Heart, Lung, and Blood Institute recommends a more aggressive approach to treating high blood pressure in patients with type 2 diabetes. This is based on studies showing significant reductions in diabetes-related strokes, small blood vessel damage, and deaths when blood pressure is brought under control.

SourceNIH/National Heart, Lung and Blood Institute·JournalJournal of Clinical Hypertension·DateMay 29, 2000

New robotic microarray technology finds novel genes involved in cardiac hypertrophy and recovery

A study using robotic microarray technology has identified 55 genes involved in cardiac hypertrophy, including 30 previously unassociated genes. The research also discovered eight genes associated only with recovery from hypertrophy, providing new insights into the complex relationship between heart stress and gene expression.

SourceDOE/Lawrence Berkeley National Laboratory·JournalProceedings of the National Academy of Sciences·DateMay 29, 2000

'Lying' gets space-age results

A U of T engineer has devised a method to control vibrations in robots assembling or repairing objects in outer space. By entering a 'corrected' equation into the system, scientists can reduce deformations and complete tasks more quickly.

SourceUniversity of Toronto·JournalJournal of Robotic Systems·DateMay 28, 2000

Study shows receptor molecule facilitates introduction of corrected genes into cells

University of North Carolina at Chapel Hill scientists have discovered a receptor molecule that can facilitate the introduction of corrected genes into cell nuclei, paving the way for potential gene therapy treatments. The study uses a G-protein-coupled receptor to enable weakened viruses to enter cells, carrying therapeutic payloads.

SourceUniversity of North Carolina at Chapel Hill·JournalNature Biotechnology·DateMay 28, 2000

Stone tools reveal ancient seafood diet

A new study of ancient stone tools in Eritrea reveals that early humans harvested seafood in Africa around 125,000 years ago. The discovery suggests a widespread adaptive strategy in early human behavior that spread across the continent between 115,000 and 125,000 years ago.

SourceUniversity of Toronto·JournalNature·DateMay 28, 2000

Many common drugs promote tooth decay

Studies found that medications like clonidine and propranolol can significantly increase the risk of tooth decay in individuals with dry mouth. The research suggests that antihistamines, antidepressants, and other medications can alter saliva composition, making it less effective at neutralizing acids and remineralizing teeth.

SourceUniversity of Rochester·JournalCaries Research·DateMay 25, 2000

How stress maintains population levels

A Cornell University study reveals that a naturally occurring disease can regulate a wildlife population, with house finches experiencing a dramatic drop in numbers after an epidemic began. The research provides insight into the dynamics of other host/disease systems and has implications for understanding diseases like AIDS.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateMay 24, 2000

Ney honored for fish research

John J. Ney received the 1999 Outstanding Achievement Award from the American Fisheries Society for his long-term research on reservoir fish communities and their trophic relationships. His work has significantly impacted fisheries productivity, particularly in manmade waterbodies.

Equatorial water may have provided means of survival

Researchers from the University of Toronto and Texas A&M University suggest that a belt of open water near the equator may have supported life during the Snowball Earth era. This region could have provided refuge for early multi-celled animals, enabling them to survive and thrive in the face of extreme climate conditions.

SourceUniversity of Toronto·JournalNature·DateMay 24, 2000

Researchers identify key enzyme in aneurysm development

The study identified metalloproteinase-9 (MMP-9) as a key player in the development of abdominal aortic aneurysms. The researchers found that MMP-9 production was significantly reduced in patients who took doxycycline, suggesting a potential therapeutic strategy for preventing aneurysm expansion.

SourceWashU Medicine·JournalJournal of Clinical Investigation·DateMay 23, 2000