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Fatty acid profiles in normal and obstructed rabbit bladder smooth muscle and mucosa
Author(s) -
Hass Martha A.,
Leonova Elena,
Levin Robert M.
Publication year - 1999
Publication title -
neurourology and urodynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 90
eISSN - 1520-6777
pISSN - 0733-2467
DOI - 10.1002/(sici)1520-6777(1999)18:6<697::aid-nau20>3.0.co;2-m
Subject(s) - arachidonic acid , medicine , bladder outlet obstruction , fatty acid , stearic acid , palmitic acid , endocrinology , detrusor muscle , linoleic acid , oleic acid , enzyme , urinary bladder , biochemistry , chemistry , cancer , prostate , organic chemistry
Partial bladder outlet obstruction results in progressive loss in contractile and specific cellular and subcellular membrane functions. There is evidence that ischemic activation of proteolytic and lipolytic enzymes play a major role in the etiology of bladder dysfunction secondary to partial outlet obstruction. The specific aims of the current study were to determine the fatty acid profiles in normal rabbit bladder smooth muscle and mucosa and to determine the effect of partial outlet obstruction on the distribution and content of free and total fatty acids. Fatty acids were isolated by extraction from obstructed and normal bladder smooth muscle and mucosal homogenates, and samples were analyzed by gas chromatography. All samples contained palmitic, stearic, oleic, linoleic, and arachidonic acids. A 100% increase in total fatty acid concentration was observed in the obstructed bladder muscle tissue relative to normal bladders, although the concentration of total arachidonic acid remained constant in the two groups. Significantly higher levels of free arachidonic acid were observed in the obstructed bladder muscle group compared to the normal group. No changes were observed in fatty acid concentrations or distributions in bladder mucosa. These data show that fatty acid composition is altered as a result of bladder obstruction and support the idea that obstruction increases the activity of lipase activity and/or decreases acyl transferase activity. Neurourol. Urodynam. 18:697–711, 1999. © 1999 Wiley‐Liss, Inc.