Scientists have found that exposure to male perspiration has marked psychological and physiological effects on women: It can brighten women’s moods, reducing tension and increasing relaxation, and also has a direct effect on the release of luteinizing hormone, which affects the length and timing of the menstrual cycle.
Army researchers are laying the groundwork for what one day could be a test to identify individuals who have been exposed to biological agents. They present their findings today at the American Society for Microbiology’s Biodefense Research Meeting. “Recent events have demonstrated that assessing exposure to a biological threat agent well in advance of onset of illness or at various stages post-exposure would be an important capability to have among the diagnostic options,” says Marti Jett of the Walter Reed Army Institute of Research, the scientist directing the study.
Children’s viewing of violent TV shows, their identification with aggressive same-sex TV characters, and their perceptions that TV violence is realistic are all linked to later aggression as young adults, for both males and females. That is the conclusion of a 15-year longitudinal study of 329 youth published in the March issue of Developmental Psychology, a journal of the American Psychological Association (APA). These findings hold true for any child from any family, regardless of the child’s initial aggression levels, their intellectual capabilities, their social status as measured by their parents’ education or occupation, their parents’ aggressiveness, or the mother’s and father’s parenting style.
Tiny motor proteins delivering vital nutrients along the length of nerves are a target for two common chemicals known for their neurotoxicity, says a Medical College of Georgia researcher. Acrylamides – used in water purification, paper manufacturing, mining and recently found in potato chips, French fries, baked cereals and other carbohydrates cooked at high temperatures – and hexanes — an organic solvent used in glues, paints and shoe manufacturing – can shut down these motor proteins, says Dr. Dale W. Sickles, MCG neurotoxicologist.
A strong link exists between lifetime exposure to ultraviolet light, particularly lifetime sunburns, and the development of melanoma ? the most lethal form of skin cancer. Now, for the first time, scientists have identified a specific molecular pathway within cells that becomes mutated by ultraviolet light exposure, thereby speeding up melanoma development.
Exposure to blood and body fluids while operating places surgeons at risk, yet a large number of doctors continue to put themselves in danger despite knowing the evidence, according to a University of Alberta study. Double gloving is a safety measure, which decreases the risk of exposure. However, many surgeons do not incorporate this precaution into their personal practice. This study, which is published in the current edition of the American Journal of Surgery evaluates surgeons’ gloving practices and hepatitis status.
Women’s exposure to environmental contaminants that mimic the activity of human sex hormones during prenatal development can affect the masculinity and femininity of their offspring, UB researchers have found. However, the results seem to point to a shared influence of the parents’ own gender-related behavior and exposure to the contaminants, which can act as “endocrine disrupters,” according to David E. Sandberg, Ph.D., UB associate professor of psychiatry and pediatrics and lead author on the research.
The federal government today published its biennial Report on Carcinogens, adding steroidal estrogens used in estrogen replacement therapy and oral contraceptives to its official list of “known” human carcinogens. This and 15 other new listings bring the total of substances in the report, “known” or “reasonably anticipated” to pose a cancer risk, to 228. Among the other new additions: wood dust and ultraviolet light.