Serous cysts are a benign component of the cyclic ovary in the guinea pig with an incidence dependent upon inhibin bioactivity

The Journal of Veterinary Medical Science
FangXiong ShiKazuyoshi Taya

Abstract

Ovaries were collected from normal cycling female guinea pigs on each day of the estrous cycle (n = 5 per day) for histological analysis of ovarian morphology. Three types of ovarian cysts were observed: serous cysts, follicular cysts and parovarian cysts. The most common were serous cysts (cystic rete ovarii), which were present throughout the estrous cycle with an overall incidence of 63.5% (54 out of 85 animals). Follicular cysts occurred in 22.4% of guinea pigs overall (19 out of 85). Only one parovarian cyst (1 out of 85) was observed in the present experiment. Follicular cysts always coincided with serous cysts and were less common during diestrus. The incidence of serous cysts did not vary significantly across the estrous cycle. In a second experiment, cycling female guinea pigs were arrested in a prolonged luteal phase by a progesterone implant in order to achieve ovarian synchrony. They were then treated with inhibin antiserum (0.5 or 1 ml per animal i.v.; n = 6 per group) or normal goat serum (controls; n = 6 per group). There was a dose dependent increase in the incidence of serous ovarian cysts following passive immunization against the inhibin alpha-subunit. These results suggest that serous cysts are a normal comp...Continue Reading

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Citations

Nov 28, 2013·The Veterinary Clinics of North America. Exotic Animal Practice·Anthony Pilny
Sep 11, 2013·The Veterinary Clinics of North America. Exotic Animal Practice·Andrew D Bean
Nov 7, 2015·The Veterinary Journal·Frank Künzel, Jörg Mayer
Apr 23, 2015·The Veterinary Clinics of North America. Exotic Animal Practice·Michelle G Hawkins
Jul 5, 2016·New Zealand Veterinary Journal·D RozanskaK Putowska
May 1, 2013·Birth Defects Research. Part B, Developmental and Reproductive Toxicology·Steffen SchneiderBennard van Ravenzwaay
Oct 24, 2017·The Journal of Veterinary Medical Science·Christof Albert BertramKerstin Müller
Aug 10, 2021·The Veterinary Clinics of North America. Exotic Animal Practice·Lorenzo CrostaShivananden Sawmy

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