A National Case-Control Study Of The Causes Of Childhood Brain Tumours
Funder
National Health and Medical Research Council
Funding Amount
$1,159,259.00
Summary
Childhood brain tumours are the second most common childhood cancer (~20%) after leukaemia (~35%) and are the leading cause of cancer death among children. Children who survive a brain tumour are often left with physical and mental problems as a result of treatment. This can have a significant impact on the child, family and community. Greater understanding of the causes of childhood brain tumours may lead to preventative measures. Most children with brain tumours are very young, suggesting that ....Childhood brain tumours are the second most common childhood cancer (~20%) after leukaemia (~35%) and are the leading cause of cancer death among children. Children who survive a brain tumour are often left with physical and mental problems as a result of treatment. This can have a significant impact on the child, family and community. Greater understanding of the causes of childhood brain tumours may lead to preventative measures. Most children with brain tumours are very young, suggesting that factors to which parents are exposed may affect future children. For this reason, it is important to study the parents as well as the child. This study will investigate environmental exposures known to be harmful, such as parental cigarette smoking and exposure to pesticides and other chemicals. Such exposures are also thought to increase the risk of other childhood cancers like Acute Lymphoblastic Leukaemia. We will also investigate whether dietary factors - including vitamin supplements - in the parents or the child can reduce the risk of a child developing a brain tumour. This study also examines genetic factors which can influence the body's ability to deal with toxins. Some genetic variations, combined with diet and lifestyle factors, may alter the risk of developing some cancers. These interactions need to be examined in greater detail for childhood brain tumours. This national study will examine specific genes and analyse them in conjunction with rigorous assessment of exposures throught to be related to the development of childhood brain tumours. Results obtained from children with brain tumours and their parents will be compared with those from healthy 'control' children and their parents. This is the first study to assess gene-environment interactions in relation to the risk of childhood brain tumours.Read moreRead less
Early Life Stress, Adolescent Brain Development And Risk For Adverse Cognitive And Psychosocial Outcomes
Funder
National Health and Medical Research Council
Funding Amount
$640,595.00
Summary
This project aims to study pre and postnatal childhood factors and examine their association with HPA-functioning, cognition, and mental health during adolescence in the Western Australian Pregnancy Cohort Study (Raine Study). Childhood exposures include not only trajectories of stressful life events, family functioning and mental health status during childhood, but also effects of intrauterine and postnatal growth patterns, and a comprehensive range of psychosocial, familial and environmental f ....This project aims to study pre and postnatal childhood factors and examine their association with HPA-functioning, cognition, and mental health during adolescence in the Western Australian Pregnancy Cohort Study (Raine Study). Childhood exposures include not only trajectories of stressful life events, family functioning and mental health status during childhood, but also effects of intrauterine and postnatal growth patterns, and a comprehensive range of psychosocial, familial and environmental factors. It is our objective to characterise functional polymorphisms for genes related to stress regulation and examine their interactions with early life exposures and their neurobiological consequences. We will also test 16 year old Raine subjects for cognitive ability, and in some we will image their brain activity while performing these tests. We anticipate to enhance the already comprehensive phenotypic Raine Study data base with neurobiological information for future neuroscience studies as the Raine cohort matures. We hypothesise that increased and sustained trajectories of early life stress, family dysfunction or poor mental health during childhood will increase the risk of Raine Study adolescents experiencing: (i) - increased stress sensitivity with higher baseline cortisol levels during adolescence; (ii) - increased adolescent stress sensitivity, if they are carriers of specific haplotypes of the glucocorticoid and mineralocorticoid receptor genes.;(iii) - depression during adolescence, if they are homozygous or heterozygous for the short allele of the serotonin transporter (5-HTT) gene; (iv) - poorer cognitive performance and increased atypical non-prefrontal cortex (PFC) brain activity during cognitive testing as measured by fMRI; and (v) -more mental health problems during adolescence.Read moreRead less
Genetic Epidemiology Of Chronic Respiratory Diseases From Childhood To Adulthood: A Prospective Study Of Sibships
Funder
National Health and Medical Research Council
Funding Amount
$889,220.00
Summary
Chronic Respiratory Diseases (CRDs) are a major public health problem. It is known that CRDs change over time but we have no information on causes of these changes. Some childhood asthmatics continue to have asthma as adults and-or develop Chronic Obstructive Pulmonary Disease (COPD) while others are free of any adult CRD. Some of those who do not have childhood asthma develop asthma and-or COPD as adults while the others remain free of CRDs from childhood to adulthood. To investigate risk facto ....Chronic Respiratory Diseases (CRDs) are a major public health problem. It is known that CRDs change over time but we have no information on causes of these changes. Some childhood asthmatics continue to have asthma as adults and-or develop Chronic Obstructive Pulmonary Disease (COPD) while others are free of any adult CRD. Some of those who do not have childhood asthma develop asthma and-or COPD as adults while the others remain free of CRDs from childhood to adulthood. To investigate risk factors for these changes, following up siblings over time is a powerful tool. As siblings share the childhood environment but not the adult environment, it helps to disentangle childhood environment, adult environment and genetic factors. The Tasmanian Asthma Study (TAS) is amongst worlds' major longitudinal respiratory studies and it is unique because it was conceived as a family study, with all the family members and the family environment being surveyed. TAS commenced in 1968 by investigating 8,585 school children born in 1961 (referred to as probands), their parents (16,267) and siblings (21,044). By the end of 2006, we will have completed the 37-year follow-up of the TAS probands, which focuses on non-genetic risk factors for middle-age CRDs. This follow-up together with baseline data now provides a unique opportunity for conducting a sibling study, which can concurrently examine genes, childhood environment and adult environment for change in CRDs. Also, it will provide a platform for future studies to investigate the progression of CRDs in this family cohort. Therefore, we now seek funding to extend the current follow-up to include the siblings. This will be the world's only population-based respiratory sibling study that spans childhood to adulthood. This will provide information for preventing chronic respiratory morbidity and disability in the future, which will be original and significant not only in Australia but also internationally.Read moreRead less