Comparison of pain intensity, smooth muscle cells density, and alpha-smooth muscle actin expression in ovarial and peritoneal endometriosis

Abstract

HIGHLIGHT1. Pain intensity, smooth muscle cells density, and alpha-SMA expression can be used to analyze the role of smooth muscle in endometriosis.2. Compared to healthy individuals, those with endometriosis have higher pain intensity, smooth muscle cells density, and alpha-SMA expression. 3. Among endometriotic patients, those with peritoneal endometriosis have higher pain intensity, smooth muscle cells density, and alpha-SMA expression than those with ovarial endometriosis.3. The expression of alpha-SMA, smooth muscle density, and pain intensity were found to correlate significantly in endometriosis. ABSTRACTObjectives: to identify the role of smooth muscle through the analysis of smooth muscle cells density, expression of a-SMA, and the pain intensity.Materials and Methods: Study design is a cross sectional analytic observational. Study sample consists of women with ovarial endometrios and women with peritoneal endometriosis that undergo laparoscopy and laparotomy in RSUD Saiful Anwar Malang and RSIA Melati Malang from January until December 2019. There are 16 samples: 8 samples of ovarial endometriosis and 8 samples of peritoneal endometriosis. Smooth muscle cell density was analyzed by comparing the number of smooth muscle cells with the total area of endometriosis tissue in one microscopical field. a-SMA expression obtained by immunohistochemistry. Degree of pain obatined by filling the part 1 point 1-11 of EHP-30 queistionnaire the day after the procedure. Data was analyzed by Independent T-test and Pearson correlation.Results: Pain intensity, smooth muscle cells density, and a-SMA expression is higher in the endometriosis patient compared to healthy individual. Pain intensity, smooth muscle cells density, and a-SMA expression is lower in the ovarial endometriosis compared to peritoneal endometriosis.Conclusion: There are a significant correlation between the expression of a-SMA, smooth muscle density, and pain intensity in endometriosis.