Gene-environment Interactions In The Aetiology Of Myopia
Funder
National Health and Medical Research Council
Funding Amount
$671,285.00
Summary
The rapid rise in the prevalence of shortsightedness poses a major public health challenge. The Sydney Myopia Study has collected a large database on environmental risk factors, and has documented a major protective effect of children spending more time outdoors. Other studies suggest that myopia has a major genetic component. This study will collect DNA samples from over 4000 participants in the Sydney Myopia Study, and through genome-wide scanning, will look for gene-environment interactions.
Deciphering Specific Roles For The Common Arnt Proteins In BHLH/PAS Transcription Factor Complexes
Funder
National Health and Medical Research Council
Funding Amount
$526,421.00
Summary
Understanding the precise control of neuronal genes related to appetite and obesity, and neuropsychiatric disorders and dementia, is complicated by some gene regulating proteins having highly related sequences. This project will eludcidate how two closely related proteins can determine specific target gene outputs, information important for designing methods to control activities of neurological disease related genes within cells.
Understanding Gene-environment Interactions In Relation To Risk Of Age-related Cataract
Funder
National Health and Medical Research Council
Funding Amount
$86,514.00
Summary
Age-related cataract is the clouding of the lens, a leading cause of visual impairment among older persons. The burden of this common eye disease will only increase as the population ages. Besides age, other environmental and genetic risk factors that increase the risk of cataract have been identified. The aim of this research is to examine how the interplay of genes and environment contributes to age-related cataract formation, using population-based data of established studies.
Genetic And Environmental Risk Factors On Lifetime Risk Of Obstructive Lung Disease
Funder
National Health and Medical Research Council
Funding Amount
$351,414.00
Summary
Classification of lifetime phenotypes of obstructive lung disease allows investigation of the effect of environmental and genetic influences on specific phenotypes along with the interactions between them. Through improved phenotyping ,the currently inconsistent relationships between asthma and COPD and their associations with genetic and environmental factors may become clearer.
Defining Factors That Contribute To Individual Diversity In The Diet-health Axis
Funder
National Health and Medical Research Council
Funding Amount
$1,668,059.00
Summary
There is a complex interplay between nutrition and genetics such that one diet maybe good for some but not for others depending on genetic makeup. Preliminary experiments in flies and mice support this. We found that for some flies, diets high in fat are harmful resulting in short life but certain flies resist the harmful effects of fat and live a longer lives. We propose to unravel the gene-environment interaction and determine which genes might lead to optimal health outcomes on certain diets.
Molecular Mediators, Epigenetic Modulators And Therapeutic Targets For Cognitive Disorders
Funder
National Health and Medical Research Council
Funding Amount
$763,845.00
Summary
Brain disorders constitute an enormous, and growing, burden. My research investigates how genes and environment combine to cause disorders of cognition, including dementia, schizophrenia and autism. The research will provide new insights into these disorders, at the level of molecules, cells and behaviour. I will explore how genetic and environmental factors interact, with a focus on mental activity, physical exercise and stress, which affect a range of neurological and psychiatric disorders.
One Australian dies of Motor Neuron Disease (MND) every day. MND is likely to be due to a genetic susceptibility to an environmental agent such as a toxin or a virus. Recent advances in gene therapy have emphasised the urgent need to find the gene abnormalities in MND. We propose to set up an Australia-wide DNA Bank for MND to allow researchers to look for genetic abnormalities and environmental influences in this disease.
It is now well established that there are genetic factors contributing to risk of depression but it is far from clear what these are and how they interact with environmental risk factors such as stressful life events (SLE) and poor social support (SS). A recent, highly cited paper has claimed that those carrying a particular genotype at the sertonin transporter gene are much more badly affected by stressful life events than other genotypes, and that this puts these people at much higher risk of ....It is now well established that there are genetic factors contributing to risk of depression but it is far from clear what these are and how they interact with environmental risk factors such as stressful life events (SLE) and poor social support (SS). A recent, highly cited paper has claimed that those carrying a particular genotype at the sertonin transporter gene are much more badly affected by stressful life events than other genotypes, and that this puts these people at much higher risk of depression. If true, this could have important practical implications for preventative mental health, in identifying those at greatest risk if depression and counselling them to avoid stressful situations. However, success in replicating this finding has been mixed, and this is possibly because another important risk factor, social support, has not been taken into account. We have DNA samples from over 5000 twins who have been assessed for depression and risk factors including SLE and SS. This will give us unprecedented power to estimate the importance of the genotype x environment interaction. We shall also type other genes that have been implicated in depression and check for interactions with life events and social support. Our results will inform preventative strategies in mental health practice.Read moreRead less
Melanoma is one of Australia?s major cancer problems, but we still do not completely understand why certain people are at higher risk than others. This study is focussed on people who have developed melanoma at an early age (under 40yrs) and will compare their family history of cancer, skin features, genetic characteristics and various aspects of their previous sun exposure with people who don?t have melanoma. The large number of people involved and the fact that they will be selected at random ....Melanoma is one of Australia?s major cancer problems, but we still do not completely understand why certain people are at higher risk than others. This study is focussed on people who have developed melanoma at an early age (under 40yrs) and will compare their family history of cancer, skin features, genetic characteristics and various aspects of their previous sun exposure with people who don?t have melanoma. The large number of people involved and the fact that they will be selected at random from the population of Melbourne, Sydney and Brisbane which have very different melanoma rates, means that the study will be able to clarify what roles genes and environment play in the disease. It is intended to be an international benchmark in this regard, and Australia is the only country in which a study of this scope could be mounted. Potential benefits from this research will be a better understanding of the way sun exposure affects people differently, depending on their genetic makeup, the place of genetic testing in assessing people?s risk of melanoma, particularly if they have relatives with the disease, and way in which skin features like moles should be taken into account in that assessment. Finally, it is likely that better information about the types of genetic susceptibility to melanoma in the population will translate to more effective programs for the prevention of melanoma and for detection of melanomas efficiently at the earliest possible stage.Read moreRead less