Location of inclusion cysts in mouse ovaries in relation to age, pregnancy, and total ovulation number: implications for ovarian cancer?

No Thumbnail Available
File version
Author(s)
Tan, Olivia L.
Hurst, Peter R.
Fleming, Jean
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)

C Simon Herrington

Date
2005
Size
File type(s)
Location
License
Abstract

Benign ovarian cysts are thought to be precursor lesions that differentiate and transform into carcinoma. With the aim of testing the hypothesis that increased ovulation number increases the frequency or number of ovarian cysts, the development and appearance of ovarian cysts was investigated in mice of differing ages and total lifetime ovulation number. High total ovulation number was induced by keeping mice in cages divided by a screen, with a male on one side and two females on the other side. Significantly more cysts were observed in animals subjected to incessant ovulation for 8 months and in 12 month breeding mice than in 3-month virgin mice or 1-month prepubertal animals. These cysts had the appearance of benign serous inclusion cysts. When cystic ovaries were serial sectioned, 47% of cysts had a connection to the ovarian hilus and potentially to the tubules of the rete ovarii, 31% were adjacent to the hilus, and 22% had an intra-ovarian location. A significant increase in intra-ovarian cysts was observed in the 8-month incessant ovulation group, implying that high ovulation number leads to ovarian surface invagination and inclusion cyst formation. In conclusion, ovarian inclusion cysts may be derived from more than one epithelial source, but incessant ovulation may increase the proportion derived from the ovarian surface epithelium. Because the cysts observed resembled human serous inclusion cysts these results have possible implications for epithelial ovarian carcinoma.

Journal Title

Journal of Pathology

Conference Title
Book Title
Edition
Volume

205

Issue
Thesis Type
Degree Program
School
Publisher link
DOI
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Clinical Sciences

Persistent link to this record
Citation
Collections