GAINESVILLE, Fla. — Oral disease occurs commonly and progresses rapidly among people who have HIV, but the process is poorly understood. Researchers suspect that the culprit is a change in the makeup of bacterial communities that live in the mouth. (more…)
Children who receive antibiotics within the first six months of life are at a significantly increased risk of developing asthma and allergies by 6 years of age, even without a genetic predisposition, new research by the Yale School of Public Health suggests. The findings are reported online in the American Journal of Epidemiology. (more…)
ANN ARBOR, Mich.— Young people who are overexposed to antibacterial soaps containing triclosan may suffer more allergies, and exposure to higher levels of Bisphenol A among adults may negatively influence the immune system, a new University of Michigan School of Public Health study suggests.
Triclosan is a chemical compound widely used in products such as antibacterial soaps, toothpaste, pens, diaper bags and medical devices. Bisphenol A (BPA) is found in many plastics and, for example, as a protective lining in food cans. Both of these chemicals are in a class of environmental toxicants called endocrine-disrupting compounds (EDCs), which are believed to negatively impact human health by mimicking or affecting hormones. (more…)
*University of Missouri investigators’ discovery sheds light on how plants fight off bacterial infections*
Columbia, MO — Like us, plants rely on an immune system to fight off disease. Proteins that scout out malicious bacterial invaders in the cell and communicate their presence to the nucleus are important weapons in the plant’s disease resistance strategy. Researchers at the University of Missouri recently “tapped” into two proteins’ communications with the nucleus and discovered a previously unknown level of cross talk. The discovery adds important new information about how plant proteins mediate resistance to bacteria that cause disease and may ultimately lead to novel strategies for boosting a plant’s immune system.
Special proteins in the plant, called resistance proteins, can recognize highly specific features of proteins from pathogen, called effector proteins. When a pathogen is detected, a resistance protein triggers an “alarm” that communicates the danger to the cell’s nucleus. The communication between the resistance protein and nucleus occurs through a mechanism called a signaling pathway. (more…)
ANN ARBOR, Mich.—University of Michigan researchers have discovered a new method to prevent the immune-system attacks that often occur following bone marrow transplants.
Bone marrow transplantation can cure patients with leukemia and other cancers even when the disease is resistant to other treatments. The success of this procedure relies on killing cancer cells by using immune cells from a bone marrow donor while avoiding an immune attack against the patient’s organs, which causes a dangerous complication called graft-versus-host disease. (more…)
Since Adam and Eve, snakes have long been portrayed as evil creatures to be feared. Aboriginal groups in Australia hold the snake in high esteem, and it is a symbol of fertility. Native Americans in North America felt that snakes symbolized life cycles and truth.
