Related Experiment Video
Updated: Jun 23, 2026

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
Published on: March 5, 2022
Abnormal uterine bleeding: a focus on polycystic ovary syndrome
Martha Hickey1, Krish Karthigasu, Sweta Agarwal
1School of Women's & Infants Health, King Edward Memorial Hospital, University of Western Australia, Australia. mhickey@meddent.uwa.edu.au
Abstract:
Abnormal uterine bleeding imposes major medical, social and financial problems for women, their families and the health services. Abnormal uterine bleeding refers to the regularity, frequency, duration and volume of bleeding. Irregular menstrual bleeding is most common at the extremes of reproductive life, in the initial 12-18 months after menarche and 5-6 years before the menopause begins. In Australia, the estimated cost of investigating and managing heavy menstrual bleeding alone is approximately AUS $6 million per annum. This article addresses the common causes of irregular bleeding in pre- and peri-menopausal women and presents an investigational approach.
Related Concept Videos
Disorders of the Female Reproductive System
Oogenesis
Ovarian Cycle
Hormonal Control of the Ovarian Cycle
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of endometrial...
Hormonal Regulation of the Menstrual Cycle
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.

