The incidence of malaria in many African countries south of the Sahara is falling rapidly. A Danish-Tanzanian research group has discovered that the mosquito carrying the malaria parasite has practically disappeared from villages without organized mosquito control, and the researchers do not know why. There are several hypotheses but without proper data they cannot say whether malaria is being eradicated or whether it is just resting up before returning with renewed vigour.
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New Orleans, LA – Research led by Dr. Melinda Sothern, Professor of Public Health and Jim Finks Endowed Chair in Health Promotion at LSU Health Sciences Center New Orleans, has found that obese 7-9-year-old children had nearly three times the liver fat and almost double the belly fat of their nonobese counterparts and that insulin resistance was more than double and insulin sensitivity less than half respectively. The study is the first to use a combination of advanced measurements in healthy obese and nonobese children in this age group prior to entering puberty.
WINSTON-SALEM, N.C. – Aug. 24, 2011 -- Heart rate and blood pressure regulation may hold the key to treating unexplained chronic nausea in children. In a new study by researchers at Wake Forest Baptist Medical Center, a drug commonly used to treat a condition known as orthostatic intolerance (OI), which causes dizziness and occasional fainting when patients stand for long periods, was shown to reduce debilitating chronic nausea in patients.
DURHAM, N.C.— Aerobic exercise is your best bet when it comes to losing that dreaded belly fat, a new study finds.
When Duke University Medical Center researchers conducted a head-to-head comparison of aerobic exercise, resistance training, and a combination of the two, they found aerobic exercise to be the most efficient and most effective way to lose the belly fat that's most damaging to your health.
In one of the first taxonomic revisions of Neotropical butterflies that utilizes 'DNA barcoding', Andrei Sourakov of the University of Florida, Florida Museum of Natural History and Evgeny Zakharov of the University of Guelph, Canadian Centre for DNA Barcoding at the Biodiversity Institute of Ontario have uncovered a spectacular degree of evolutionary divergence within the satyrine butterfly genus Calisto.
Current estimates of the impact of chemotherapy on women's reproductive health are too low, according to a University of California, San Francisco (UCSF) study. The researchers say their analysis of the age-specific, long-term effects of chemotherapy provides new insights that will help patients and clinicians make more informed decisions about future reproductive options, such as egg harvesting.
Cornstalks, wheat straw, and other rough, fibrous, harvest-time leftovers may soon be less expensive to convert into cellulosic ethanol, thanks to U.S. Department of Agriculture (USDA) scientists' studies of a promising new biorefinery yeast.
The role of national governments in ecological or environmental conservation remains contentious the world over. While scientists and campaigners alike often demand that governments regulate and encourage restoration projects; financial priorities and conflicts with land owners or corporations makes such interventions politically difficult.
Tropical plants may contain the basis of new and effective treatments for ovarian cancer, according to researchers at the Universities of Strathclyde and Portsmouth.
The scientists are developing a programme for testing plant extracts for the ability to stop cells from ovarian tumours growing. In initial tests, several plant extracts killed the tumour samples, taken from cancer patients.
Why different species have dissimilar sets of chromosomes? Why the differentiated species often conserve apparently identical chromosome complements? Furthermore, why, while chromosome rearrangements can considerably change the course of species evolution, certain variation among individuals and populations of some species persists indefinitely? Such questions motivate researchers to compare chromosomes in closely related species.
Los Angeles, CA (AUGUST 25, 2011) Suicide, child abuse, playground fights, gang violence, sexual assault, and domestic violence are just a few examples of violence that touch people in all walks of life and communities everywhere. Homicide and suicide remain in the top ten leading causes of death for people from birth to age 64. How do you combat an issue that takes so many forms and has so many causes?
Scientists at Yale University have developed the first practical method to create a compound called huperzine A in the lab. The compound, which occurs naturally in a species of moss found in China, is an enzyme inhibitor that has been used to treat Alzheimer's disease in China since the late 1990s and is sold in the U.S. as a dietary supplement to help maintain memory. Scientists believe it could also potentially combat the effects of chemical warfare agents.
New nationwide benchmarks representing current critical care practices for ICUs may highlight opportunities for care improvement. Researchers from the University of Massachusetts, the University of Maryland, and Maine Medical Center analyzed data representing 243,553 adult admissions from 271 ICUs and 188 US nonfederal hospitals during 2008. Using electronic medical records, they found that more than half of these critically ill adults were less than 65 years old and returned to their homes after discharge.
Since HIV infection rates began to rise again around 2000, researchers have been grasping for answers on what could be causing this change, especially in the homosexual community. The rising numbers are a stark contrast to the 1990's, when infection rates dropped due to increased awareness of the virus. A new study in Israel reveals that the number of new HIV cases diagnosed each year in the last decade saw a startling increase of almost 500% compared to the previous decade, and similar trends have been reported in a number of other developed nations, including the U.S.
Adventurous females choose mates with similar personalities, regardless of the male's appearance and other assets, according to research led by the University of Exeter. This is the first study to show that the non-sexual behaviour or personalities of both mates influences partner choice in non-humans.