Elastin and Collagen in the Normal and Obstructed Urinary Bladder

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Abstract
Histological and chemical studies were carried out on the elastin and collagen content of the normal and the obstructed urinary bladder wall. The observations were made on 3 different age groups: 3 mo. old children with vesical outlet obstruction, children between 4-8 yr with partial vesical obstruction, and adults with a chronically obstructed bladder. An increase in elastic tissue was shown only in the newborn and in the adults. The collagen did not vary in any of the cases studied. The elastin showed an increase in polar amino acids in the pathological organs compared with the normal. A similar increase in elastin was observed in normal individuals as a result of the aging process.