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Elastin and collagen in the normal and obstructed urinary bladder
Insights
Urinary bladder obstruction alters elastin and collagen. Elastin increased in newborns and adults with obstruction, while collagen remained unchanged, suggesting elastin
Area of Science:
- Urology
- Biochemistry
- Histology
Background:
- Urinary bladder wall composition changes with obstruction.
- Elastin and collagen are key structural proteins in the bladder wall.
Purpose of the Study:
- To investigate the histological and chemical changes in elastin and collagen content in normal versus obstructed urinary bladders across different age groups.
Main Methods:
- Histological examination of bladder tissue.
- Chemical analysis of elastin and collagen content.
- Study included three age groups: infants, children, and adults with varying degrees of bladder outlet obstruction.
Main Results:
- Increased elastic tissue was observed in newborns and adults with bladder obstruction.
- Collagen content did not significantly vary across studied groups.
- Elastin in pathological bladders showed an increase in polar amino acids compared to normal bladders.
Conclusions:
- Urinary bladder obstruction impacts elastin content, particularly in newborns and adults.
- Ageing also contributes to increased elastin in normal bladders.
- Collagen levels appear unaffected by obstruction or ageing in this study.
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: (1) 3-month-old children with vesical outlet obstruction, (2) children aged between 4 and 8 years with partial vesical obstruction, and (3) 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 ageing process.