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Older patients offer insight into the future of cystic fibrosis
Date:5/19/2010

An emerging population of middle-aged cystic fibrosis patients contains significantly more females and includes a large proportion of patients who lived for decades without a diagnosis or specialized care, according to research published by researchers at National Jewish Health. The comprehensive analysis of this over-40 cohort, published online May 20 in the American Journal of Respiratory and Critical Care, may help guide future treatment of cystic fibrosis as survival past 40 becomes increasingly common.

"As both care and diagnosis have improved, cystic fibrosis has been transformed from a uniformly fatal childhood disease to a condition where survival to middle age and older is possible," said National Jewish Health pulmonologist and lead author Jerry Nick, MD. "We were surprised to discover that the majority of patients diagnosed as adults were females, representing a striking reversal of the "gender gap" in cystic fibrosis, and that they have delayed, but equally severe disease."

Cystic fibrosis (CF), an inherited disease of the lungs and digestive system, affects about 30,000 people in the United States and is the most common genetic disease among Caucasians. A single defective gene causes a missing or non-functional channel for chloride to travel into and out of cells. Lack of this channel disrupts the water balance in the lungs of CF patients, causing the development of thick, dehydrated mucus, which serves as a fertile environment for bacterial growth. Most patients die of respiratory failure brought on by repeated severe bacterial infections in the lungs.

In 1962 the median predicted survival for children with cystic fibrosis was 10 years. Today, it is 37, and children diagnosed today can expect to live into their 50s. Improved care is helping patients live longer. In addition, many more patients with non-traditional symptoms are being diagnosed for the first time as adults.

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Contact: William Allstetter
allstetterw@njhealth.org
303-398-1002
National Jewish Medical and Research Center
Source:Eurekalert

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