Understanding The Role Of Muscarinic Receptors In The Pathophysiology Of Depression And Bipolar Disorder
Funder
National Health and Medical Research Council
Funding Amount
$480,074.00
Summary
The causes of bipolar disorder and major depressive disorder, which effect many Australians, remain unknown. We have recently shown decreases in muscarinic receptors in the brain of people with bipolar disorder and major depressive disorder. Muscarinic receptors are important in maintaining the functions of the brain that seem to be affected in people with bipolar disorder and major depressive disorder. Here we seek to understand how changes in muscarinic receptors occur in both disorders.
Depression And Anxiety In Working Adults: The Costs And Outcomes Of Working While Ill
Funder
National Health and Medical Research Council
Funding Amount
$137,292.00
Summary
Depressive and anxiety disorders are common in the working population and costly. Individuals can continue working while ill or take an absence from work. This study will evaluate the economic cost and health outcomes of these two scenarios, using existing and published data to develop descriptive models. We consider who pays and who benefits from the perspective of the individual, their employer and society, to inform policy making, management practices, and clinical care.
A Prospective Study Of Inflammatory Cytokines As Common Factors In The Aetiology Of Both Depression And Osteoporosis.
Funder
National Health and Medical Research Council
Funding Amount
$291,230.00
Summary
Both depression and osteoporosis are common, debilitating and expensive diseases and there is research to suggest that these conditions are related. This study will examine a potential common mechanism, inflammation, which may underlie both diseases. It will focus on circulating proteins which are associated with both depression and fragility fractures, and examine the role they play in both disorders.
Delineating The Anatomical Correlates Of Neurocognitive And Psychomotor Dysfunction In Depression By FMRI
Funder
National Health and Medical Research Council
Funding Amount
$388,340.00
Summary
Severe depression is characterised by slowing of mental and motor abilities. Previous research by our group indicates the role of small frontal and basal brain regions in the regulation of these abilities. This research will extend our previous studies by providing new information detailing the underlying physiology of behavioural and structural abnormalities in patients with severe depression. Emerging research by our group and others suggest that some types of severe depression in later life a ....Severe depression is characterised by slowing of mental and motor abilities. Previous research by our group indicates the role of small frontal and basal brain regions in the regulation of these abilities. This research will extend our previous studies by providing new information detailing the underlying physiology of behavioural and structural abnormalities in patients with severe depression. Emerging research by our group and others suggest that some types of severe depression in later life are due to undetected forms of cerebrovascular disease. If we are able to demonstrate that the key features of severe depression of this type (psychomotor, attentional, memory and executive disturbance and global disability) are related to such brain changes this may lead to a major breakthrough in the prevention and treatment of these disorders. A new type of brain imaging technology called 'functional Magnetic Resonance Imaging' (fMRI) permits simultaneous investigation of the structure and function of small areas of the brain. As the technique does not use radiation and can be performed while the patient is completing mental tasks, it can be used in repeated experiments. Consequently, it permits description of brain changes (areas of activation) that occur during specific mental tasks. Therefore, if we are now able to use this technique to extend our previous clinical and imaging studies we will be able to test whether some forms of late-life depression are due to undetected brain changes.Read moreRead less
Towards An Etiological Understanding Of The Comorbidity Of Psychiatric Disorders
Funder
National Health and Medical Research Council
Funding Amount
$997,883.00
Summary
Pyschiatric disorders are common disorders with both genetic and environmental etilogy. The disorders are characterised both by significant overlap of symptoms and by significant heterogenity of symptoms within disorders. The availability of genome-wide genotypes allows us, for the first time, to investigate co-morbidity directly at the molecular level. Understanding the nature of co-morbidity between disorders nay be an important key to effective treatment.
The Diamond Cohort Study - Long Term Outcomes Of Depressive Symptoms In Primary Care
Funder
National Health and Medical Research Council
Funding Amount
$567,538.00
Summary
The diamond study follows what happens to almost 800 people with depressive symptoms whom attend general practice for care over 5 years of their life. This study will map the severity of depressive symptoms, life circumstances, use of health care services and treatments and allow us to understand factors associated with relapse and recovery from depression in order to improve care. This will assist us to develop models of care that better suit the needs of people experiencing depressive symptoms ....The diamond study follows what happens to almost 800 people with depressive symptoms whom attend general practice for care over 5 years of their life. This study will map the severity of depressive symptoms, life circumstances, use of health care services and treatments and allow us to understand factors associated with relapse and recovery from depression in order to improve care. This will assist us to develop models of care that better suit the needs of people experiencing depressive symptoms.Read moreRead less
Mortality And Survival Among Clients Of The Aboriginal Medical Service At Redfern
Funder
National Health and Medical Research Council
Funding Amount
$483,290.00
Summary
The aims of the mortality study are to: (a) document current age-sex specific and cause-specific Indigenous mortality; (b) establish trends in age-sex specific and cause-specific Indigenous mortality over time; (c) compare age-sex-cause specific mortality in the AMS Redfern cohort with patterns documented in other Aboriginal populations, and in the general Australian population. The null hypotheses for general and cause-specific mortality (age-adjusted) are that: (a) there has been no decline in ....The aims of the mortality study are to: (a) document current age-sex specific and cause-specific Indigenous mortality; (b) establish trends in age-sex specific and cause-specific Indigenous mortality over time; (c) compare age-sex-cause specific mortality in the AMS Redfern cohort with patterns documented in other Aboriginal populations, and in the general Australian population. The null hypotheses for general and cause-specific mortality (age-adjusted) are that: (a) there has been no decline in mortality in Aboriginal people attending AMS Redfern over 30 years covering 1972-2001; (b) survival in the AMS cohort is similar to that recorded in Aboriginal people from NT and WA (mostly rural) for similar time periods; (c) comparisons of the AMS cohort mortality with overall NSW mortality are similar to previously published comparisons of NT-WA Aboriginal mortality compared to overall Australian mortality data. Major causes of mortality will centre on endocrine (mainly diabetes), cardio- and cerebro-vascular diseases, and on external causes, including suicide-violence and accidental death. The mortality study will be extended back to the inception of the AMS, and will rely on computerisation of name(s), sex, date of birth and date of first and last AMS attendance for the whole AMS patient data base, to provide information for matching of patient records with the National Death Index (for deaths from 1980) and for matching with the NSW mortality data for 1971-79 (as there is no nationwide mortality data available from a single source prior to 1980).Read moreRead less
Trajectories Between Childhood Internalising Behaviour Problems And Adolescent Depressive Symptoms
Funder
National Health and Medical Research Council
Funding Amount
$55,000.00
Summary
Depressive symptoms are known to escalate sharply through the adolescent years. Adolescents who experience an episode of depression are very likely to experience further mental illness as adults. Efforts to prevent depressive illness may be advanced by research delineating the factors and processes implicated in the early emergence of depressive symptoms. To advance such an understanding this project will analyse data collected, in part, through NHMRC support to Australian Temperament Project (A ....Depressive symptoms are known to escalate sharply through the adolescent years. Adolescents who experience an episode of depression are very likely to experience further mental illness as adults. Efforts to prevent depressive illness may be advanced by research delineating the factors and processes implicated in the early emergence of depressive symptoms. To advance such an understanding this project will analyse data collected, in part, through NHMRC support to Australian Temperament Project (ATP) researchers. The ATP data will be used to examine factors associated with the development and progression of depressive symptoms from childhood to adolescence. The ATP data set includes detailed longitudinal data collected from multiple sources (parents, teachers and youth) concerning child and adolescent temperament, behavioural problems, mother-child relations, health, depressive symptoms, school achievement, school adjustment, social skills, peer relationships, parenting practices, stressful life events, and sociodemographic factors. Of an original sample of 2443 enrolled in the cohort in 1983 (aged 4-8 months) a subsample of 1,350 adolescents should complete the data collection due in 2000 (age 17-18). Through the analysis of ATP data proposed in this application, models will be developed to explain the risk and resiliency processes in childhood and early adolescence influencing the development and course of adolescent depression, for different subgroups of adolescents. To achieve this objective, analyses will: 1. identify groups who have differing trajectories from childhood internalising behaviour problems to adolescent depressive symptoms; 2. compare groups to identify factors that contribute to the progression from internalising behaviour problems to depressive symptoms, while also identifying factors which appear to impede such progression and; 3. compare groups to identify factors associated with transient versus persistent depressive symptoms in adolescence.Read moreRead less
A Double-blind Sham Controlled Trial Of RTMS In Treatment Resistant Major Depression
Funder
National Health and Medical Research Council
Funding Amount
$371,491.00
Summary
Treatment Resistant Depression is clearly a major health issue - depression is common, results in marked morbidity and mortality and a large percentage of patients do not respond to, or cannot tolerate standard treatment. The development of new treatments for this condition is undoubtedly required. International efforts are underway to try and establish the efficacy of high frequency left Transcranial Magnetic Stimulation (HFL-TMS) to the point where the technique may be approved by regulatory a ....Treatment Resistant Depression is clearly a major health issue - depression is common, results in marked morbidity and mortality and a large percentage of patients do not respond to, or cannot tolerate standard treatment. The development of new treatments for this condition is undoubtedly required. International efforts are underway to try and establish the efficacy of high frequency left Transcranial Magnetic Stimulation (HFL-TMS) to the point where the technique may be approved by regulatory authorities and clinically introduced. However, clearly the response rate to HFL-TMS is suboptimal for its widespread use. The overall goal of this research program is to develop repetitive TMS (rTMS) methods to the point at which they are highly relevant and applicable to clinical practice. None of the substantial international studies is focusing on novel applications such as sequential bilateral rTMS (SBrTMS). The planned outcome of this study is that it may change the focus of rTMS application and practice nationally and internationally. If we can follow our well received initial study of this technique with a substantial comparative trial as planned here, it will provide enough evidence for the more widespread adoption and testing of SBrTMS as a viable alternative to HFL-TMS. Ultimately, this or a modification of it, may become the rTMS administration method of choice. Additionally, we will have a sufficient sample size to start to explore meaningful predictors of clinical response including biological, psychosocial-personality variable predictors.Read moreRead less