Researchers at Boston Medical Center (BMC) and Boston University School of Public Health (BUSPH) have found that persons infected with the human immunodeficiency virus (HIV), who also have alcohol problems, were negatively affected by co-infection with the hepatitis C virus (HCV). These findings appear in the June issue of Alcoholism: Clinical Experimental Research.

A new analysis has found that many alcohol treatment studies are designed in ways that inadvertently omit women and African-Americans from participation. The Stanford University School of Medicine researcher who led the effort said the findings should remind all scientists that strict study eligibility criteria can have unintended, negative consequences.

In reviewing data from a pool of 100,000 alcohol treatment patients, Keith Humphreys, PhD, professor of psychiatry and behavioral sciences, determined that women and African-Americans were substantially more likely to be excluded from treatment studies than men or non-African-American patients, because of eligibility requirements involving psychiatric problems, employment and housing problems, and drug use.

While heavy drinking has consistently been linked to an increased risk of intimate partner violence (IPV), a new study has found that both drinking patterns and neighborhood characteristics can contribute in different ways to mutual IPV among married/cohabiting adults in the general population.

Results are published in the June issue of Alcoholism: Clinical & Experimental Research.

The link between heavy drinking and increased risk of IPV is fairly well established, according to Carol B. Cunradi, senior research scientist at Prevention Research Center and sole author of the study. However, she noted, IPV researchers are increasingly examining the role of other factors that may exacerbate this link.

Smokers who have a say in how they quit are more likely to try kicking the habit and are more successful, according to new research at the University of Rochester.

Rochester researcher Dr. Geoffrey Williams associate professor of medicine at the University of Rochester School of Medicine and Dentistry, will unveil new findings at a Toronto conference this month that demonstrate patient involvement in a quit plan leads to smokers who are more motivated to quit because they genuinely want to, not because they are being nagged or bullied.

Red imported fire ants (RIFAs), which have caused trouble in Florida and Texas for decades, are now advancing in Virginia. Colonies of the tiny, highly aggressive insects have been observed in the commonwealth since 1989 and, in recent years, have caught the attention of Virginia Tech scientists who are trying to learn more about the increasing number of fire ant infestations.

Cold Spring Harbor Laboratory (CSHL) researchers have identified a function of neuregulin1 (NRG1), a gene previously linked to schizophrenia but whose role in the disease was unknown. "We found that when this gene or this pathway is impaired," explained CSHL's Bo Li. "It starts a chain reaction negatively impacting synapses in the brain which contribute to the abnormal development of brain circuits and may lead to schizophrenia."

By discovering the connections between genes and how they impact synapses and circuits in the brain, research is guiding the development of new strategies to diagnose and treat neurological disease.

The discovery of a flexible genetic coding in leaf-cutting ants sheds new light on how one of nature's ultimate self-organising species breeds optimum numbers of each worker type to ensure the smooth running of the colony.

Research at the University of Leeds shows that despite an inherited genetic pre-disposition to grow into a particular worker caste, ant larvae can be triggered by environmental stimuli to switch development depending on colony's workforce needs.

Effector proteins are the bad guys that help bacterial pathogens do their job of infecting the host by crippling the body's immune system. In essence, they knock down the front door of resistance and disarm the cell's alarm system.

Now, researchers at the University of California, San Diego (UCSD) School of Medicine have identified a novel molecular target for an effector protein called YpkA, one of several effectors of the bacteria Yersinia – the pathogen responsible for the Middle Ages' "Black Death" and a virulent form of food poisoning today. Their study will be published online in the May 25 issue of Molecular Cell.

The frequency of intense hurricanes in the Atlantic Ocean appears to be closely connected to long-term trends in the El Niño/Southern Oscillation (ENSO) and the West African monsoon, according to new research from the Woods Hole Oceanographic Institution (WHOI). Geologists Jeff Donnelly and Jonathan Woodruff made that discovery while assembling the longest-ever record of hurricane strikes in the Atlantic basin.

A popular stereotype that boys are better at mathematics than girls undermines girls' math performance because it causes worrying that erodes the mental resources needed for problem solving, new research at the University of Chicago shows.

The scholars found that the worrying undermines women's working memory. Working memory is a short-term memory system involved in the control, regulation and active maintenance of limited information needed immediately to deal with problems at hand.