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Science News Archive 2003 - Page 38


Page 38 of 108

Mouse, stripped of a key gene, resists diabetes

Researchers have discovered an engineered mouse that can eat a high-fat diet without gaining weight or developing diabetes. The mouse lacks the SCD-1 gene, which affects fat production and glucose regulation. As a result, muscle cells are more sensitive to insulin, enabling them to absorb glucose and regulate blood sugar levels.

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateSep 2, 2003

Terrible hours and more...

A historic conference at the U.S. Naval Academy brought together experts on underwater rescue and salvage, including survivors of notable submarine accidents like USS SQUALUS and USS TANG. The accounts of these men are now transcribed in a new book that explores some of the most daring undersea missions of the last century.

JCI Table of Contents

A comprehensive study on anthrax lethal toxin reveals that human infection is not caused by septic shock but rather hypoxia-induced liver failure. The findings suggest that existing therapies for cytokine-mediated sepsis will not be effective in treating anthrax, highlighting the need for new approaches to treatment.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateSep 2, 2003

Hot pepper chemical links tongue to heart

Researchers discovered that 'hot pepper' receptors on the heart trigger symptoms of heart attack and may lead to new treatments for angina pectoris. The study found that these receptors cause blood vessels to constrict and increase blood pressure, leading to chest pain.

SourcePenn State·JournalThe Journal of Physiology·DateSep 1, 2003

Study shows brain activity influences immune function

A study published in the Proceedings of the National Academy of Sciences found that individuals with greater activity in the left side of the prefrontal cortex had a stronger immune response against disease. The researchers measured brain activity and immune function in 52 individuals between 57-60 years old, and found a positive corre...

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateSep 1, 2003

Dual action anthrax vaccine more effective

A new vaccine targets both the anthrax bacterium and its toxins, demonstrating improved effectiveness in mice tests. The dual-action approach also holds promise as a therapeutic vaccine to help those already infected control the bacteria over time.

SourceHarvard Medical School·JournalProceedings of the National Academy of Sciences·DateSep 1, 2003

Purdue research plots new field in plant genomics

Purdue University researchers have developed a new field called 'ionomics,' which studies how genes regulate all the ions in a cell. This research holds promise for creating mineral-efficient plants that need little fertilizer, crops with better nutritional value, and plants that can remove contamination from the soil.

SourcePurdue University·JournalNature Biotechnology·DateAug 31, 2003

Rat study shows exposure to Ecstasy early in pregnancy induces brain, behavior changes

A new study found that exposing pregnant rats to MDMA resulted in significant increases in dopamine neuron fibers in the frontal cortex, leading to potential behavioral changes. The study also revealed modest decreases in dopamine metabolism and reductions in serotonin levels, suggesting sex differences in vulnerability to MDMA's prena...

SourceNIH/National Institute on Drug Abuse·JournalNeurotoxicology and Teratology·DateAug 29, 2003

Making 3-D chips a reality

Researchers at Rensselaer Polytechnic Institute are developing new interconnect technologies that enable three-dimensional circuit integration, promising improved performance and function. The technology uses damascene processing to bond wafers together face-to-face, reducing global travel distance and enabling faster signal transmission.

Stem cells shown to regenerate damaged lung tissue for first time

Adult stem cells have been shown to regenerate damaged lung tissue, offering a promising new treatment for devastating lung diseases. The study's findings suggest that circulating stem cells can repair damage in organ tissue, which could have a huge impact on the treatment of conditions like emphysema and cystic fibrosis.

SourceUniversity of Vermont·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateAug 29, 2003

UNC study: Trails, places to excercise, streetlights can boost activity levels

The UNC study found that residents with access to trails, sidewalks, and well-lit streets were more likely to meet the recommended physical activity levels. Notably, blacks, American Indians, and those with lower education and income levels reported less favorable neighborhood environments and reduced access to exercise spaces.

SourceUniversity of North Carolina at Chapel Hill·JournalAmerican Journal of Health Promotion·DateAug 28, 2003

Sage improves memory, study shows

A study published in Pharmacology, Biochemistry and Behaviour found that sage oil improved word recall test performance in healthy young adults. Sage is being investigated as a potential treatment for Alzheimer's Disease due to its ability to inhibit the enzyme acetylcholinesterase.

Study seeks genetic keys to exercise success

A new study is investigating the role of genetics in exercise response, seeking to identify genes that influence body composition and fitness. The project aims to develop personalized exercise programs tailored to individual needs, which could lead to improved weight loss and reduced obesity-related risks.

Dartmouth bioengineers develop humanized yeast

Researchers at Dartmouth College and GlycoFi have developed a technology to produce human-like glycoprotein structures in yeast, offering improved quality and quantity of pharmaceutical proteins. This breakthrough has the potential to increase patient access to life-saving drug therapies by overcoming production capacity bottlenecks.

SourceDartmouth College·JournalScience·DateAug 28, 2003

New studies demonstrate importance of offering range of treatment options to elderly cancer patients

Two new studies found that elderly lung cancer patients benefit equally from aggressive chemotherapy and radiation treatment, contradicting common assumptions. Fit elderly patients should be fully briefed on treatment options, including potential risks and benefits. The studies suggest presenting the full range of treatment options to ...

SourceAmerican Society of Clinical Oncology·JournalJournal of Clinical Oncology·DateAug 28, 2003

Wrist bands can ease cancer nausea, especially for patients who expect them to work

Researchers found that wrist bands with acupressure or stimulation applied to an acupuncture point on the wrist reduced nausea in breast cancer patients by 15% compared to no band. Patients who expected the bands to ease their nausea experienced even greater relief, reporting a 25% decrease in nausea severity.

SourceUniversity of Rochester Medical Center·JournalJournal of Pain and Symptom Management·DateAug 28, 2003