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    Anti-Müllerian Hormone Expression in the Ovarian Follicles and Factors Related to Serum Anti-Müllerian Hormone Concentrations in the Domestic Queens
    (Hellenic Veterinary Medical Soc, 2024) Gözer, A.; Dogruer, G.; Gökçek, I; Kutlu, T.; Bahan, O.; Yağcı, İlknur Pir
    Anti-M & uuml;llerian Hormone (AMH) is a glycoprotein with 140 kDa molecular weight secreted by the granulosa cells, playing a crucial role in folliculogenesis. The present study aimed to reveal (1) the relationship between age, body weight, estrouscycle, and ovariohysterectomy with the serum AMH concentrations and (2) expression of the AMH in the ovarian follicles. Serum AMH concentrations were determined by a commercial ELISA. Ovarian expression of the AMH in the granulosa cells was detected by immunohistochemistry. Twenty femalecats were allocated to three groups according to the period of the sexual cycle, age, and body weight. The phaseof their estrouscycle was determined according to serum estradiol 17 beta and progesterone levels. Blood samples were collected to detect serum AMH concentration on Day 0- preoperative, Day 3, and Day 10 -postoperative. There was a decrease in AMH concentration on Day 3 compared to the preoperative level (Day 0) (P<0.001).No statistical difference in AMH concentration wasfound between Day 3 and 10 postoperative (P>0.05). Furthermore, the period of the sexual cycle, age, and body weight did not affect AMH levels (P>0.05). In immunohistochemical analyses,a mild AMH expression was first observed in the granulosa cells of the primary follicles, and moderate AMH expression was observed in the granulosa cells of the secondary follicles. Strong AMH expression was observed in the cumulus cells and mild AMH expression in the mural granulosa cells of the antral follicles. In conclusion, ovariohysterectomy caused a definite decline in serum AMH concentration, and AMH expression was found in all the ovarian follicles except for primordial follicles in domestic cats.