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Science News Archive May 1999 - Page 2


Page 2 of 5

Depression May Lower Your Sex Hormones

A study by Dr. Ulrich Schweiger and colleagues found that severely depressed men have lower testosterone concentrations during the day and night, as well as higher cortisol levels. This disturbance of gonadal function may impair sexual function and increase the risk of heart disease and osteoporosis.

SourceCenter for Advancing Health·JournalPsychosomatic Medicine·DateMay 24, 1999

Low Cholesterol Extracts A Price

A recent study published in Psychosomatic Medicine found that 39% of women with naturally low cholesterol levels scored high on a depression scale, while 35% scored similarly high on an anxiety scale. The study also linked low-density lipoprotein cholesterol and triglyceride concentrations to depression and anxiety.

SourceCenter for Advancing Health·JournalPsychosomatic Medicine·DateMay 24, 1999

Less Toxic Bone Marrow Transplant Technique May Have More Powerful Anti-Cancer Effect

Researchers at Massachusetts General Hospital have developed a new approach to bone marrow transplantation that induces mixed chimerism in four patients with treatment-resistant non-Hodgkin's lymphoma. Two patients achieved long-term remission without significant graft-versus-host disease, a dangerous complication of the procedure. The...

SourceMassachusetts General Hospital·JournalThe Lancet·DateMay 21, 1999

Children Benefit Most From Sun Safety Interventions

A new study published in Health Education & Behavior found that children benefit most from sun safety interventions due to high lifetime exposure during childhood. Parents' sun safety habits strongly influence their children's behaviors, while recreation programs' policies are not significantly associated with parents' practices.

SourceCenter for Advancing Health·JournalHealth Education & Behavior·DateMay 20, 1999

'Energy Density' -- Not Fat -- Is Key To Feeling Full While Managing Weight

A Penn State study suggests that eating low-energy-density meals, which contain fewer calories per ounce and are rich in fruits, vegetables, or grains, can help individuals manage their weight while still feeling full and satisfied. The study found that the energy density of food, rather than fat content, plays a key role in satiety.

SourcePenn State·JournalAmerican Journal of Clinical Nutrition·DateMay 20, 1999

Porous Silicon Lights Way For New Analytical Devices

Researchers at Purdue University have developed a technique that combines porous silicon with mass spectrometry to streamline biochemical analyses. The technique, called desorption ionization on silicon (DIOS), allows for the simultaneous testing of large numbers of compounds in a fraction of the time required by current methods.

SourcePurdue University·JournalNature·DateMay 20, 1999

American Heart Association Comment: Nonsurgical Reconstruction Of Thoracic Aortic Dissection By Stent-Graft Placement

A new nonsurgical technique using stent-graft placement has been shown to be effective in treating people with life-threatening aortic dissection. The catheter-delivered procedure involves inserting a wire mesh tube to force open and maintain the blocked aorta, reducing complications and mortality rates.

SourceAmerican Heart Association·JournalNew England Journal of Medicine·DateMay 19, 1999

Dietary Supplements Could Put A Stop To A Royal Curse

Researchers have discovered naturally occurring enzymes that can detoxify porphyrins, building blocks of haemoglobin, in a potential breakthrough for treating variegate porphyria. This rare disorder was passed down through the royal family, including Queen Elizabeth II's first cousin Prince William of Gloucester.

SourceNew Scientist·JournalThe New Scientist·DateMay 19, 1999

Treating Depression Makes A Healthier Heart

A study found that patients taking selective serotonin reuptake inhibitors (SSRIs) had a reduction in sticky platelets, which can contribute to heart problems. The researchers suggest that improved mood is the key factor behind this effect.

SourceNew Scientist·JournalThe New Scientist·DateMay 19, 1999

Testosterone Is Mixed Blessing To Men's Health

A study found that middle-aged men with higher testosterone levels are less likely to experience high blood pressure, heart attacks, and obesity. However, they are more likely to engage in unhealthy behaviors such as smoking and excessive drinking.

SourcePenn State·JournalJournal of Behavioral Medicine·DateMay 19, 1999

Engineered Corn Can Kill Monarch Butterflies

Research by Cornell University reveals that genetically engineered corn, designed to protect against pests, can kill monarch butterfly larvae when they come into contact with its pollen. This has significant implications for the long-term survival of the monarch species, which is already facing habitat disruption and other threats.

SourceCornell University·JournalNature·DateMay 19, 1999

Walker named a Fellow of the British Royal Society

Alan Walker, a distinguished professor at Penn State, has been recognized by the British Royal Society for his groundbreaking work on human origins. He is one of forty-two new Fellows elected this year and was honored for his distinguished contributions to the world's knowledge of human origins.

Mouse Map Leads Way To Human Disease Exploration

A new color-coded chromosome mapping system devised by Julie R. Korenberg enables quick localization of known matching genes in humans using mouse DNA, greatly speeding up research into Down Syndrome and other human illnesses. The system has profound implications for the study of human diseases and the development of effective treatments.

SourceCedars-Sinai Medical Center·JournalGenome Research·DateMay 18, 1999

Mayo Clinic Study Finds Costs For Cancer Clinical Trials Comparable To Costs For Standard Treatment

The study found that the costs of treating patients in clinical trials were modestly higher than for those who opted for standard treatment, with an average total cost of $46,424. The authors recommend payment for patients' treatment in National Cancer Institute-approved clinical trials to improve access and patient outcomes.

SourceMayo Clinic·JournalJNCI Journal of the National Cancer Institute·DateMay 18, 1999

After 20 Years, FUSE Finally Nears Launch

After 20 years, NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) satellite is nearing its scheduled June 23 launch. The project faced numerous setbacks, including the Challenger rocket explosion and budget cuts, but ultimately, Johns Hopkins University took over management and implemented cost-saving measures.