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Risk Of Birth Defects In Children Born Following Infertility Treatment
Funder
National Health and Medical Research Council
Funding Amount
$191,962.00
Summary
The development of assisted reproductive technology (ART) for infertility treatment has advanced at a tremendous pace since late 1970's. The use of ART is becoming increasingly frequent, with Australia having one of the highest rates of use internationally. Over 4,000 births result from ART annually in Australia. At the same time, minimally invasive infertility treatment-ovulation induction and insemination, remains a main option for some infertile couples and also generates several thousand bir ....The development of assisted reproductive technology (ART) for infertility treatment has advanced at a tremendous pace since late 1970's. The use of ART is becoming increasingly frequent, with Australia having one of the highest rates of use internationally. Over 4,000 births result from ART annually in Australia. At the same time, minimally invasive infertility treatment-ovulation induction and insemination, remains a main option for some infertile couples and also generates several thousand births annually. A fundamental concern for those involved in infertility treatment is the health of the children born following the treatment. Evidence from many studies indicates that compared to the general population, ART babies are more likely to be a twin or triplet, have a low birth weight, be born premature, and suffer higher rates of perinatal death and cerebral palsy. These issues are gradually being addressed by transferring a single embryo in a cycle. Of greater concern is the recent reporting by a Western Australian team that the risk of major birth defects is doubled in ART children. This is a highly significant finding that has raised concern in patients and clinicians. It is imperative to verify the findings through replication in a larger study. It is equally important to identify whether the increased risk is due to potentially modifiable treatment factors or patient factors related to their infertility. This innovative study will therefore also separate patient characteristics and type of treatment, and partition the risk attributable to various factors. The health of children from infertility treatments is of fundamental concern and has become an important public health issue. This study will direct future basic research in embryology and clinical services where there is a continual need to balance technical innovation and efficacy with treatment safety. The long-term benefit will be improvement of the health status of Australian families.Read moreRead less
Transplantation of frozen ovarian tissue is being used by young patients at risk of losing ovarian function. This study aims to maximize the likelihood that patients who have ovarian tissue collected, frozen and returned will acheive the desired outcome of returning ovarian hormonal cyclicity, ovulation, or fertility.
PRE CLINICAL TRIAL WITH FETAL PIG INSULIN-PRODUCING CELLS
Funder
National Health and Medical Research Council
Funding Amount
$292,416.00
Summary
If fetal pig cells are to be of value in normalizing blood glucose levels in diabetic people once transplanted, they must survive and mature after being grafted. The pre-clinical study proposed will examine several novel issues that are of direct relevance to future clinical trials. The diabetic pig will be used as recipient to address when the fetal cell matures after it is transplanted, how long the grafted cells will maintain normal blood glucose levels, and at which site it is most appropria ....If fetal pig cells are to be of value in normalizing blood glucose levels in diabetic people once transplanted, they must survive and mature after being grafted. The pre-clinical study proposed will examine several novel issues that are of direct relevance to future clinical trials. The diabetic pig will be used as recipient to address when the fetal cell matures after it is transplanted, how long the grafted cells will maintain normal blood glucose levels, and at which site it is most appropriate to transplant the cells. The baboon will be used as recipient to address the safety of transplanting the pig cells, especially from the pig endogenous retrovirus, and whether the immunosuppressive regime proposed for use in humans will prevent cellular rejection. The diabetic baboon will be used in the final experiment step to determine if normalization of blood glucose levels can be achieved in this xenografted animal just as it can in the diabetic pig.Read moreRead less
We propose to determine if a recently discovered biological mechanism plays crucial roles in the development of eggs and sperm. To achieve this, we will remove or mutate this pathway specifically in developing eggs and sperm , then examine the effect. Preliminary results indicate that the mechanism does play important roles mutated eggs fail to complete maturation. These studies will tell us more about what makes a healthy egg and sperm, and are relevant to female and male fertility.
Ongoing Prospective Audit Using High Quality Data And Database Linkage To Improve The Outcomes Of Macular Disease
Funder
National Health and Medical Research Council
Funding Amount
$843,237.00
Summary
FRB! is a national collaboration of retinal research centres that will collect data during the usual patient consultation. We will track the risks and benefits of the new treatments for macular disease which will inform the development of evidence based clinical management guidelines to assist the clinician to deliver the most appropriate treatment in the safest, most cost effective manner. We aim to support this with information from linked population health databases.
Role Of The Anaphase-Promoting Complex Activator Cdh1 In Oocyte Maturation And Meiotic Aneuploidy
Funder
National Health and Medical Research Council
Funding Amount
$526,878.00
Summary
Eggs containing an incorrect number of chromosomes are described as aneuploid. This project sets out to examine the molecular causes of aneuploidy and why it increases with female age. We focus on the protective role of the protein Cdh1 in this process. The outcome would be to better understand the origins of aneuploidy so as to find methods of decreasing it as women age. This is highly significant given aneuploidy is the leading cause of early embryo loss and produces Down Syndrome babies.
MicroRNA Regulation Of Sex Determination And Gonad Development.
Funder
National Health and Medical Research Council
Funding Amount
$518,076.00
Summary
Sex determination, the decision to develop into either boy or girl, influences most aspects of our lives. Consequently, disorders of sexual development (~1% of births), resulting in genital abnormalities, infertility and often cancer, are extremely traumatic for the individual. The molecular basis of these disorders is not well understood. This project will identify new factors important for sex determination and therefore will improve diagnosis and clinical care for the patients.
The Mechanism Of Spermatid Differentiation - A Link To Tumour Suppression
Funder
National Health and Medical Research Council
Funding Amount
$506,425.00
Summary
To discover novel regulators of male fertility, we have screened libraries of mutant mice generated by a chemical mutagen. This project aims to define the function of the mutated gene identified in a male-specific infertile mutant mouse line. The mutated gene has been proposed to play a role in regulating cell death and suppress lung tumour formation. Our data may reveal novel options for male infertility treatment and for the development of male contraception and lung cancer biomarkers.
Characterization Of The Molecular Basis Of Human Sperm-oocyte Interaction
Funder
National Health and Medical Research Council
Funding Amount
$492,956.00
Summary
In this proposal, we shall exploit our expertise in gamete biology and innovative proteomic technologies to elucidate the molecular mechanisms that underpin human sperm-oocyte interaction. This exquisitely cell- and species-specific event constitutes one of the most strategically important cellular interactions. Our research will provide the foundation for diagnosis and treatment of male infertility and identify a range of targets for the development of novel contraceptive technology.
Epithelial-trophoblast Interactions In Human Embryo Implantation: Role For Interleukin 11 And Leukemia Inhibitory Factor
Funder
National Health and Medical Research Council
Funding Amount
$495,667.00
Summary
Infertility, spontaneous abortion and pre-eclampsia are major clinical problems. Female infertility is frequently due to implantation failure and many IVF embryos fail to implant. Appropriate development of the placenta is critical to the outcome of pregnancy and inadequate placentation can result in spontaneous abortion. However, if the pregnancy continues with a poorly developed placenta, the mother is likely to develop pre-eclampsia with subsequent major adverse outcomes for both mother and b ....Infertility, spontaneous abortion and pre-eclampsia are major clinical problems. Female infertility is frequently due to implantation failure and many IVF embryos fail to implant. Appropriate development of the placenta is critical to the outcome of pregnancy and inadequate placentation can result in spontaneous abortion. However, if the pregnancy continues with a poorly developed placenta, the mother is likely to develop pre-eclampsia with subsequent major adverse outcomes for both mother and baby. Pre-clampsia is the most common cause of low birth weight infants and also of maternal death. Low birth weight, which is commonly an outcome of a pregnancy with pre-eclampsia, correlates with disorders later in life (including hypertension, diabetes, coronary heart disease and obesity). Interleukin (IL)-11 and leukemia inhibitory factor (LIF) are among very few molecules known to be critical for embryo implantation in the mouse. Their roles in human infertility are not well understood, although there is evidence that decreased LIF is associated with implantation failure in women. The distribution of these molecules within the uterus and placenta in primates suggests they have important roles in preparing the uterine lining for implantation and for development of a placenta in women. This project will examine how IL-11 and LIF that are locally produced at implantation sites affect the human uterus and the formation of the placenta. There is still no means of readily diagnosing endometrial infertility in women or of establishing whether the placenta is developing adequately. These studies will provide new critical information regarding the roles of these two molecules and their potential usefulness as targets for much- needed diagnostic and therapeutic tools for infertility and major diseases associated with pregnancy. Application of such new tests will produce lifelong benefits to the health of both the mother and child.Read moreRead less