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133,148 articles from ScienceDaily

Understanding Why Infection With HIV-2 Is Not As Bad As HIV-1

There are two distinct, but related, HIV viruses that humans can become infected with -- HIV-1 and HIV-2. Individuals infected with HIV-2 progress to AIDS at a dramatically reduced rate compared with individuals infected with HIV-1; in fact, most individuals infected with HIV-2 die of unrelated causes. It is hoped that understanding why individuals infected with HIV-2 rarely progress to AIDS will...

What The Schizophrenia Risk Gene Does For A Healthy Brain

How the gene that has been pegged as a major risk factor for schizophrenia and other mood disorders that affect millions of Americans contributes to these diseases remains unclear. However, the results of a new study by Hopkins provide a big clue by showing what this gene does in normal adult brains. This gene makes a protein that serves as a sort of musical conductor for newly made nerve cells in...

When Does Being Obese Not Lead To Diabetes? When Mice Lack Osteopontin

Obesity is one of the biggest risk factors for type 2 diabetes. One reason for this is thought to be the chronic inflammation characterized by macrophage infiltration into adipose tissue that accompanies obesity, because it has been linked to the development of insulin resistance (which in turn often leads to type 2 diabetes).

Women's Health Much More At Risk From Sleep Deprivation, Study Suggests

Women's health is much more at risk from sleep deprivation than men's, according to recent research. The researchers found that the those women in the study group who slept less than or equal to 5 hours a night were twice as likely to suffer from hypertension than women who slept for the more recommended seven hours or more a night. The researchers found no difference between men sleeping less...

Zebrafish Provide Insight Into Human Joint Disease

Progressive pseudorheumatoid dysplasia (PPD), which causes joint failure in early adulthood, results from genetic mutations in the WISP3 gene that lead to the generation of nonfunctional WISP3 protein. Understanding why WISP3 deficiency causes PPD has been difficult because mice lacking WISP3 have no apparent symptoms. In a new study, scientists provide insight into the functions of WISP3 by...

Failing Protection Of Africa's National Parks

For years, biologists in Africa have known that large mammals -- including antelopes and their predators -- were disappearing outside reserves. Now a raft of studies show that we have moved beyond this. We are losing species from national parks, bastion of biodiversity conservation. Worryingly, this includes the continent's crown jewels such as Tanzania's Serengeti National Park.

Patients With Diabetes Need Better Advice About Home Glucose Monitoring

A new study calls for better advice about home blood glucose monitoring for patients with non-insulin dependent (type 2) diabetes. Some experts believe that daily self monitoring helps to control blood glucose levels and it is often recommended. But others believe that self monitoring is complex and inconvenient and can lead to feelings of frustration and guilt. As such, there is still no firm...

Discovery May Pave The Way For A New Class Of Diabetes Drugs

Scientists have determined the structure of a protein found in cells that shows potential as a target for the development of new drugs to treat diabetes. They described the structure of a protein—MitoNEET—that was previously identified as a site where diabetes drugs could operate. The discovery of the protein’s three-dimensional structure makes it possible to design small...

Income Inequality Associated With Overnourishment And Undernourishment In India

Researchers have examined the extent to which income inequality is predictive of the double nutritional burden of under-nutrition and over-nutrition in India. They found that people living in Indian states with high levels of income inequality experienced a greater risk of both under- and over-nutrition, even after adjusting for various demographic, economic and behavioral variables.

One Type Of Antioxidant May Not Be As Safe As Once Thought

According to new research an antioxidant commonly used in nutritional and body-building supplements can form a red blood cell-derived molecule that makes blood vessels think they are not getting enough oxygen. This leads to pulmonary arterial hypertension, a serious condition characterized by high blood pressure in the arteries that carry blood to the lungs.


THURSDAY 6. SEPTEMBER 2007


Exercise And Yoga Improves Quality Of Life In Women With Early-stage Breast Cancer

Two studies report that exercise and yoga can help maintain and in some cases improve quality of life in women with early-stage breast cancer. The first study found that resistance and aerobic exercise improved physical fitness, self-esteem and body composition, and that resistance exercise improved chemotherapy completion rates. The second study demonstrated that yoga was particularly beneficial...

First Ever 'Zero Emission' Antarctic Station

The first ever "zero emission" Antarctic research station, the Princess Elisabeth Station, was recently unveiled in Brussels, Belgium. Using specialized building design and materials, a passive heating system, an energy control system, energy efficient appliances, and sound insulation techniques, engineers from the International Polar Foundation and its technical partners have managed to take a...

Pillar Of Invisibility

While we are a long way off from the lightweight, high-performance, magical cloak of Harry Potter, Muggle physicists have been busy designing ways to make invisibility possible. A recent theoretical analysis of a column-shaped invisibility cloak, by a collaboration of researchers from Sweden and China, showed that a cloak made to ideal specifications could render an object (or wizard) hidden...

'Lucky Camera' Takes Sharpest Ever Images Of Stars

Astronomers from the California Institute of Technology and the University of Cambridge have developed a new camera that produces much more detailed pictures of stars and nebulae than even the Hubble Space Telescope, and it does all this from here on Earth. Until now, images from ground-based telescopes have been invariably blurred by Earth's atmosphere. Astronomers have developed a technique,...

Hurricane Forecast: Heightened Activity For Rest Of Season

Above-average hurricane activity is expected for the remaining three months of the hurricane season, the Colorado State University forecast team said September 4. The individual month of September and the two-month period of October-November are expected to experience five named storms each. In September, the forecast calls for four of the five storms to become hurricanes and two to become major...

Treating Depression May Improve Recovery Of Heart Rate Variability Following Coronary Syndromes

Patients with depression appear to have an impaired ability to recover their heart rate variability following acute coronary syndromes such as heart attack, a factor that could increase their risk of coronary death, according to a new report. However, patients who are treated with antidepressants or whose mood lifts may experience more of an improvement in heart rate variability than those who are...

COPD Not Just A Disease Of The Lungs

Chronic Obstructive Pulmonary Disease (COPD) can no longer be judged as only a disease of the lungs, say authors of an article in The Lancet. Researchers propose to add the term chronic systemic inflammatory syndrome to the diagnosis of COPD to reflect the frequent complex chronic comorbidities. The most common comorbidities associated with COPD are skeletal muscle abnormalities, high blood...

LCD Televisions May Soon Look Outdated: Field Emission Displays Promising

Although relatively new to the market, liquid crystal display (LCD) televisions soon may be obsolete, thanks to a new technique that allows nanotech devices to be mass-produced. It could move the television industry away from the LCD display to the superior field emission display (FED). FEDs use a large array of carbon nanotubes – the most efficient emitters known – to create a higher...

'Take The Stairs' Signs Work

What would it take to get you to use the stairs instead of the escalator at your local mall? A team of researchers has found that healthy messages printed on stair risers attract climbers and might even encourage them to descend the stairs later. The riser messages "Take the Stairs" and "7 Minutes of Stair Climbing Daily Protects Your Heart" increased climbing on the staircase by 190 percent and...