ScienceDaily Top Science Headlines
for Sunday, August 24, 2008
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How Daughter Is Different From Mother ... In Yeast Cells (August 23, 2008) -- Scientists know how mother and daughter can be so different. Mother and daughter yeast cells, that is. The researchers have discovered a new mechanism for cell fate determination -- how one cell, the daughter, becomes dramatically different from the mother, even though they have the same genetic material. The study shows why mothers and daughters differ in how they express their genes: a certain gene regulator gets trapped in the daughter cell's nucleus. ... > full story
Rapid Test For Pathogens: Could Be Used To Detect Diseases Used By Bioterrorists (August 23, 2008) -- Dangerous disease often spreads faster than it takes to diagnose it in the lab. To remedy that, researchers at Kansas State University have developed a test to bring that time from days down to hours. ... > full story
Drier, Warmer Springs In US Southwest Stem From Human-caused Changes In Winds (August 23, 2008) -- Human-driven changes in the westerly winds are bringing hotter and drier springs to the American Southwest, according to new research from the University of Arizona in Tucson. Since the 1970s the winter storm track in the western US has been shifting north, particularly in the late winter. As a result, fewer winter storms bring rain and snow to Southern California, Arizona, Nevada, Utah, western Colorado and western New Mexico. ... > full story
Stroke Incidence Declines Among Swedish Diabetics (August 23, 2008) -- The incidence of strokes among both diabetics and nondiabetics in Northern Sweden declined between 1985 and 2003. The overall decline in strokes among diabetics may be partly due to more intensive treatment of hypertension, smoking cessation and cholesterol-lowering efforts. More recurrent strokes occurred among diabetic than nondiabetic patients, so more intensive secondary prevention for diabetic patients is needed. ... > full story
Pangea Conundrum (August 23, 2008) -- The existence of the supercontinent Pangea, which formed about 300 million years ago and broke up about 200 million years ago, is a cornerstone of plate tectonics, and processes resulting in its assembly and fragmentation have governed the evolution of Earth's crust for 500 million years. Over the past 20 years, evidence has been amassing that Pangea is just the latest in a series of supercontinents that formed repeatedly since the Archean, only to break up and reform again. ... > full story
Insomnia: Changing Your Bedtime Habits Could Help (August 23, 2008) -- Many people sleep better when they are on holiday, and wish that they could sleep as well all the time. But according to the German Institute for Quality and Efficiency in Health Care, it is not only being free of daily worries that can make a difference to sleep. Good bedtime habits can help people to sleep well all year-round. Medication provides short-term relief at best. ... > full story
Genome Of Simplest Animal Reveals Ancient Lineage, Confounding Array Of Complex Capabilities (August 23, 2008) -- The genome of the simple and primitive animal, Trichoplax adhaerens, appears to harbor a far more complex suite of capabilities than meets the eye. The findings establish a group of organisms as a branching point of animal evolution and identify sets of genes, or a "parts list," employed by organisms that have evolved along particular branches. ... > full story
Drugs To Inhibit Blood Vessel Growth Show Promise In Rat Model Of Deadly Brain Tumor (August 23, 2008) -- Drugs used to inhibit a specific fatty acid in rat brains with glioblastoma-like tumors not only reduced new blood vessel growth and tumor size dramatically, but also prolonged survival. ... > full story
Fish Cancer Gene Linked To Pigment Pattern That Attracts Mates (August 23, 2008) -- Though skin cancer is deadly to male fish, it also has one perk: The black melanoma splotches arise from attractive natural markings that lure female mates. A new study shows that the melanoma gene can be conserved in swordtail fish because of its beneficial role in sexual selection. ... > full story
Compression Stockings Incorrectly Used In 29 Percent Of Patients (August 23, 2008) -- Graduated compression stockings were used incorrectly in 29 percent of the patients and sized incorrectly in 26 percent of the patients according to new research. These stockings play an important role in preventing the formation of deep vein clots that can result in pulmonary complications and death. ... > full story
Biological Chips For Disease Detection, Drug Discovery, Now Easy To Make With New Method (August 23, 2008) -- Scientists have developed a new and fast method for making biological ‘chips’ – technology that could lead to quick testing for serious diseases, fast detection of MRSA infections and rapid discovery of new drugs. Protein chips – or ‘protein arrays’ as they are more commonly known – are objects such as slides that have proteins attached to them and allow important scientific data about the behavior of proteins to be gathered. ... > full story
Hormone Replacement Therapy Improves Sleep, Sexuality And Joint Pain In Older Women (August 23, 2008) -- One of the world's longest and largest trials of hormone replacement therapy has found that post-menopausal women on HRT gain significant improvements in quality of life. ... > full story
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