Mechanisms of infertility induced in mice by vaccination with murine zona pellucida 3. This research investigates the means by which a novel immunocontraceptive vaccine induces an infertile state in female mice. The vaccine stimulates an autoimmune condition which resembles certain naturally occurring ovarian diseases. By investigating how ovarian cellular interactions are maintained in normal ovaries and disrupted by the immunocontraceptive vaccine, we will learn a great deal about ovarian fu ....Mechanisms of infertility induced in mice by vaccination with murine zona pellucida 3. This research investigates the means by which a novel immunocontraceptive vaccine induces an infertile state in female mice. The vaccine stimulates an autoimmune condition which resembles certain naturally occurring ovarian diseases. By investigating how ovarian cellular interactions are maintained in normal ovaries and disrupted by the immunocontraceptive vaccine, we will learn a great deal about ovarian function in health and disease. Ultimately this information will be applied to improving the reproductive health of women.
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Stimulation of the mammalian reproductive system by olfactory pathways. This project answers fundamental questions about mammalian reproductive biology but, because we work with the sheep model, our findings can be applied to two of Australia's biggest export industries, wool and sheepmeat. Understanding the reproductive responses of our production animals to exteroceptive factors such as socio-sexual signals, photoperiod and nutrition is an important first step towards refining the management ....Stimulation of the mammalian reproductive system by olfactory pathways. This project answers fundamental questions about mammalian reproductive biology but, because we work with the sheep model, our findings can be applied to two of Australia's biggest export industries, wool and sheepmeat. Understanding the reproductive responses of our production animals to exteroceptive factors such as socio-sexual signals, photoperiod and nutrition is an important first step towards refining the management of breeding programs. It has been argued that this approach will also minimise, and perhaps even remove the need for, exogenous hormones and drugs for controlling the reproductive process.Read moreRead less
The critical role of kisspeptin/neurokinin/dynorphin (KNDy) neurons in gonadotropin releasing hormone (GnRH) release. The brain controls fertility through the secretion of its primary stimulatory factor, gonadotropin releasing hormone (GnRH). Brain cells producing three key peptide hormones, kisspeptin, neurokin B and dynorphin (termed KNDy cells) are vital for the control of GnRH. This project will detail the role of KNDy cells in puberty and reproduction.
Genes to phenotype: Exploiting the marsupial model. This research will exploit one of Australia's finest natural resources, its marsupial fauna. The features of marsupial reproduction and development provide a unique opportunity to answer fundamental biological questions. This research will show how the minor differences in key developmental genes that have arisen in their 100 million year isolation give rise to the characteristic differences in developmental timing and reproduction between mar ....Genes to phenotype: Exploiting the marsupial model. This research will exploit one of Australia's finest natural resources, its marsupial fauna. The features of marsupial reproduction and development provide a unique opportunity to answer fundamental biological questions. This research will show how the minor differences in key developmental genes that have arisen in their 100 million year isolation give rise to the characteristic differences in developmental timing and reproduction between marsupials and other mammals. The focus on reproduction and development will also provide invaluable knowledge to underpin efforts to conserve our endangered species and to control those that are overabundant.Read moreRead less
An integrated genomics approach to improve our understanding of the biology of genital campylobacteriosis in beef cattle. Beef is Australia's most valuable agricultural export estimated at $9.6B annually and this industry accounts for one-third of full time employment in regional communities. Currently, unknown causes of reproductive losses in cattle in Northern Australian cost producers approximately $15M per annum. Bovine genital campylobacteriosis is one of the major risk factors associated w ....An integrated genomics approach to improve our understanding of the biology of genital campylobacteriosis in beef cattle. Beef is Australia's most valuable agricultural export estimated at $9.6B annually and this industry accounts for one-third of full time employment in regional communities. Currently, unknown causes of reproductive losses in cattle in Northern Australian cost producers approximately $15M per annum. Bovine genital campylobacteriosis is one of the major risk factors associated with this high cost due to the inability to accurately diagnose the disease. This research will integrate genomics and bioinformatics with infection and vaccination models to improve our understanding of the biology of the disease to develop appropriate control strategies securing Australia's beef industry.Read moreRead less
The Long-term Consequences Of Assisted Reproduction On The Growth, Metabolic, Respiratory, Psychological, Immunological And Reproductive Development Of The Offspring.
Funder
National Health and Medical Research Council
Funding Amount
$1,552,096.00
Summary
1 in 25 children are born from IVF treatment - incredibly- to our shame; no data exists as to the long-term health of these children. Presented is a unique opportunity, which would be exceedingly difficult to replicate elsewhere in the world, to determine the long-term consequences of IVF upon the development of the offspring, by comparing their growth, metabolic, respiratory, psychological, immunological and reproductive development to a representative sample of WA children- the Raine cohort.
Brain Regulation of Reproduction: Challenging the ‘KNDy’ Hypothesis. The brain switches reproduction on and off by changing the frequency of pulses of gonadotrophin releasing hormone. The processes that produce the pulses have been a puzzle for decades but, recently, brain cells that produce three peptides (kisspeptin, neurokinin B, dynorphin), known as ‘KNDy cells’, have been heralded as the ‘missing link’, or even the ‘pulse generator’. Using sheep, this project will challenge the KNDy hypothe ....Brain Regulation of Reproduction: Challenging the ‘KNDy’ Hypothesis. The brain switches reproduction on and off by changing the frequency of pulses of gonadotrophin releasing hormone. The processes that produce the pulses have been a puzzle for decades but, recently, brain cells that produce three peptides (kisspeptin, neurokinin B, dynorphin), known as ‘KNDy cells’, have been heralded as the ‘missing link’, or even the ‘pulse generator’. Using sheep, this project will challenge the KNDy hypothesis with pheromones and with acute increases in nutrition, two factors that rapidly increase the frequency of gonadotrophin releasing hormone pulses. The outcomes of this research are directly relevant to the optimisation of reproductive management in farm animals, wildlife and humans.Read moreRead less
The molecular basis of sperm competition. This project aims to unravel the molecular basis of reproductive conflicts. Males compete for paternity and this continues after mating if females copulate and receive semen from multiple males. In ants and bees, molecules in males’ ejaculates recognise and kill rival males’ sperm. Reproductive proteins in leaf cutter ants’ seminal fluid may be the molecular agents of sperm competition. This project will investigate reproductive proteins and their functi ....The molecular basis of sperm competition. This project aims to unravel the molecular basis of reproductive conflicts. Males compete for paternity and this continues after mating if females copulate and receive semen from multiple males. In ants and bees, molecules in males’ ejaculates recognise and kill rival males’ sperm. Reproductive proteins in leaf cutter ants’ seminal fluid may be the molecular agents of sperm competition. This project will investigate reproductive proteins and their functioning and effects on reproductive success. This project will show how reproductive conflicts over paternity operate on the protein level and may lead to novel avenues for future pest control.Read moreRead less
Evolutionary proteomics of social insects. This project aims to understand the molecular mechanisms that affect fertility in honeybees and leaf-cutting ants by identifying the function of proteins in male and female secretions related to insemination and sperm storage. The understanding of these general principles will have important applications for honeybee breeding.
Extrinsic Control of Mammalian Germ Cell Delineation. Australia is a leader in the recent exciting breakthroughs in reproduction and development, such as cloning and embryonic stem cell propagation, and understanding how germ cells are specified would help us understand the biology underlying specification and developmental potential of all cells. This research will continue to contribute to maintaining Australia's high reputation in advances in reproductive biology. In addition, a greater under ....Extrinsic Control of Mammalian Germ Cell Delineation. Australia is a leader in the recent exciting breakthroughs in reproduction and development, such as cloning and embryonic stem cell propagation, and understanding how germ cells are specified would help us understand the biology underlying specification and developmental potential of all cells. This research will continue to contribute to maintaining Australia's high reputation in advances in reproductive biology. In addition, a greater understanding of marsupial reproduction is a high priority for Australia in the 21st century, with its current unacceptably high rate of mammalian extinctions, for 'we cannot conserve until we comprehend' (Short, 1985).The results therefore are of great potential benefit to society.
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