Inner workings of cystic fibrosis.Inner workings of cystic fibrosis cystic fibrosis (sĭs`tĭk fībrō`sĭs), inherited disorder of the exocrine glands (see gland), affecting children and young people; median survival is 25 years in females and 30 years in males. Cystic fibrosis, the most common fatal genetic disease in Caucasians, is beginning to reveal its secrets. Last year, geneticists This is a list of people who have made notable contributions to genetics. The growth and development of genetics represents the work of many people. This list of geneticists is therefore by no means complete. Contributors of great distinction to genetics are not yet on the list. found chromosomal markers for the disease (SN:10/19/85, p.244). Now it is the biochemists' turn: Researchers have found a defect in cell function of people with cystic fibrosis. Since Paul Quinton of the University of California The University of California has a combined student body of more than 191,000 students, over 1,340,000 living alumni, and a combined systemwide and campus endowment of just over $7.3 billion (8th largest in the United States). at Riverside discovered in 1983 that sweat gland sweat gland Either of two types of perspiration glands in the skin. Eccrine sweat glands, controlled by the sympathetic nervous system, use evaporation to cool the skin by secreting water when body temperature rises. cells of cystic fibrosis victims are not very permeable to chloride ions, researchers have focused on the channels that carry chloride across cell membranes. Now they have shown the problem to be at the level of what controls the channel, not at that of the channels themselves, according to a report in the Aug. 1 SCIENCE by researchers at the University of Alabama at Birmingham UAB began in 1936 as the Birmingham Extension Center of the University of Alabama. Because of the rapid growth of the Birmingham area, it was decided that an extension program for students who had difficulties which prevented them from studying in Tuscaloosa was needed. and in the July 31 NATURE by researchers at the University of Iowa Not to be confused with Iowa State University. The first faculty offered instruction at the University in March 1855 to students in the Old Mechanics Building, situated where Seashore Hall is now. In September 1855, the student body numbered 124, of which, 41 were women. in Iowa City and Case Western Reserve University in Cleveland. Normal chloride movement pulls water from the tissues to the lung lining; without this water, mucus in the lungs is too thick and sticky, and interferes with normal lung function. One in 2,000 U.S. Caucasians is born with the disease, and half die by age 21. Current therapy consists of chest pounding to loosen the lung secretions, and anti-biotics for the frequent lung infections. The two groups independently found that the channels in cystic fibrosis patients' cells failed to respond to a chemical that usually stimulates chloride movement. The channels sit in the cell membranes, and when the cells were disrupted and just the membranes were tested, the channels responded properly, indicating that the problem lies in the cell's control over the channel. "Nothing's different tomorrow from what it was yesterday for cystic fibrosis patients,' says Iowa's Michael J. Welsh. "But if we can find out the basic defect, we might be able to develop a rational therapy.' |
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