Studies Of The Dynamic Changes In The Ovarian Follicular Basal Lamina
Funder
National Health and Medical Research Council
Funding Amount
$305,557.00
Summary
In order for the ovary to be able to release eggs and produce hormones such as oestrogen, follicles must grow within the ovary. Each follicle contains one egg and when the follicle is large and filled with fluid it can rupture, releasing the fluid and egg in the process of ovulation. A key part of the structure of the follicle is a non-cellular layer called the basal lamina. This basal lamina encapsulates the inner cells, the egg and the fluid in the follicle. Each women has millions of follicle ....In order for the ovary to be able to release eggs and produce hormones such as oestrogen, follicles must grow within the ovary. Each follicle contains one egg and when the follicle is large and filled with fluid it can rupture, releasing the fluid and egg in the process of ovulation. A key part of the structure of the follicle is a non-cellular layer called the basal lamina. This basal lamina encapsulates the inner cells, the egg and the fluid in the follicle. Each women has millions of follicles prior to her birth, ten of thousands in her reproductive years, and none at the menopause. Since she only ovulates about 500 in her lifetime most follicles die during the process of growing to ovulatory size. This project will examine the follicular basal lamina in order to determine its role during follicle growth and development, and when follicles die. This has important implications for the many women who have polycystic ovarian disease, whose follicles fail to grow to full size. We will be examining these ovaries directly. The research also has importance in the next phase of IVF developments.Read moreRead less
I am a reproductive physiologist investigating the nature and actions of hormones, particularly steroids and transforming growth factor-? superfamily members, regulating follicle growth and oocyte quality in the ovary, implantation and breakthrough bleedi
This study is aiming to develop an unique mouse model in which to study the question whether testosterone plays an essential role in female reproductive and general health. It will develop a genetic mouse model for a biological state of complete resistance to the effects of androgens. Such mice and humans are well known among genetic males but this cannot occur naturally among genetic female mammals. By creating such a mouse line, this project will be able to test for the first time indetail whe ....This study is aiming to develop an unique mouse model in which to study the question whether testosterone plays an essential role in female reproductive and general health. It will develop a genetic mouse model for a biological state of complete resistance to the effects of androgens. Such mice and humans are well known among genetic males but this cannot occur naturally among genetic female mammals. By creating such a mouse line, this project will be able to test for the first time indetail whether testosterone has an impotant role in the development and function of the ovary and of other female tissues such as bone, muscle and the brain.Read moreRead less
Women are born with a limited supply of eggs and are unable to make new eggs after birth. Because of this, the number and health of eggs established within the ovary early in life influence the length of time for which a female will be fertile, her age at menopause, and the health of her offspring. This project aims to shed some light on the mechanisms that control egg supply and reproductive longevity in women by investigating the role of the cell death protein Bid within the ovary.
Effects Of Exercise And Lifestyle Management On Reproductive Function In Overweight Women With Polycystic Ovary Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$379,719.00
Summary
Polycystic ovary syndrome (PCOS) is a complex disorder present in 5-10% of women of reproductive age. It is associated with obesity, increased menstrual dysfunction and infertility and metabolic conditions such as increased serum insulin, high cholesterol, diabetes and heart disease. Lifestyle interventions aimed at reducing obesity and insulin resistance, which include dietary weight loss and physical activity, are advocated for the management of PCOS. However, while research indicates that wei ....Polycystic ovary syndrome (PCOS) is a complex disorder present in 5-10% of women of reproductive age. It is associated with obesity, increased menstrual dysfunction and infertility and metabolic conditions such as increased serum insulin, high cholesterol, diabetes and heart disease. Lifestyle interventions aimed at reducing obesity and insulin resistance, which include dietary weight loss and physical activity, are advocated for the management of PCOS. However, while research indicates that weight loss through diet improves many symptoms, there is a paucity of research evaluating the combined role of physical exercise in managing this condition. In addition, there is no research examining the optimal form of exercise that should be undertaken to achieve long-term reproductive fitness and metabolic health and consequently there is a lack of evidence-based exercise guidelines for patients with PCOS. We plan to perform a clinical study to investigate whether combining exercise with weight loss by diet in patients with PCOS provides any additional benefit for improving menstrual function, fertility and metabolic health beyond those that can be achieved using dietary restriction alone. We will also assess whether, when combined with dietary restriction, a program of physical activity incorporating both endurance and resistance exercise provides a greater benefit than the more common prescription of endurance exercise alone. This information will be used to assist in the development of guidelines for the effective management of reproductive dysfunction in patients with PCOS.Read moreRead less
Androgen Receptor Mechanims In Female Reproductive Physiology
Funder
National Health and Medical Research Council
Funding Amount
$539,773.00
Summary
Infertility occurs in one in six Australian couples with 50% attributable to females, thus, enhancing our understanding of ovarian and uterine function is of great importance. This project tests the proposal that androgens (steroid hormones) play a major role in regulating female reproductive physiology through their interaction with the androgen receptor. We have developed novel mouse models which we will use to determine the roles of androgens in regulating female reproductive function.