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.
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.
THE NEUROBIOLOGICAL BASIS OF INDIVIDUAL DIFFERENCES IN SUSCEPTIBILITY TO THE CONSEQUENCES OF STRESS
Funder
National Health and Medical Research Council
Funding Amount
$583,875.00
Summary
Stress plays a major role in the development and progression of many different mental health disorders. However, as we all know, the effects of stress on one person can be very different from its effects upon another. This is at least partly explained by differences in individual coping styles. When faced with a stressful situation without a ready solution, people tend to divide into two broad camps: those with an innate tendency to adopt passive coping strategies, such as avoidance, and those t ....Stress plays a major role in the development and progression of many different mental health disorders. However, as we all know, the effects of stress on one person can be very different from its effects upon another. This is at least partly explained by differences in individual coping styles. When faced with a stressful situation without a ready solution, people tend to divide into two broad camps: those with an innate tendency to adopt passive coping strategies, such as avoidance, and those that tend towards active coping strategies, such as attempting to take control of the situation. Previous studies have provided findings that suggest that passive coping is more common amongst sufferers of depression, post-traumatic stress disorder, and chronic pain syndrome than is active coping. But is this cause, or effect? And what are the intervening brain mechanisms? We attempt to address such questions in the present project using an animal model in which social conflict has been shown to trigger depression-like symptoms. In particular we wish to: (i) determine whether the patterns of brain activity triggered by social conflict are different for active vs. passive copers; (ii) determine whether the depression-like consequences of social conflict are more severe in passive than in active copers; (iii) determine whether differences in coping style and vulnerability to social conflict stress are due to the actions of a particular neurotransmitter, dopamine, in the prefrontal cortex of the brain; (iv) determine whether the actions of antidepressants might be attributable changes in prefrontal cortex dopamine function which in turn promote active coping in preference to passive coping. These studies will provide exciting new information about the neurobiological basis of individual differences in vulnerability to the harmful effects of stress, and thus will offer the hope of developing new ways of preventing devastating illnesses such as depression.Read moreRead less
Self-help For Depressive Symptoms: Finding Messages Suitable For Population-wide Promotion
Funder
National Health and Medical Research Council
Funding Amount
$161,807.00
Summary
Members of the community often use self-help methods to reduce symptoms of depression. In some cases, these may be effective, but in others they may do more harm than good (e.g. self-medication with nicotine or alcohol). The project aims to find out which self-help methods are most likely to be helpful and are easy for the community to use. These methods can then be promoted in educational campaigns to improve how people cope with symptoms of depression. If people can take action to reduce milde ....Members of the community often use self-help methods to reduce symptoms of depression. In some cases, these may be effective, but in others they may do more harm than good (e.g. self-medication with nicotine or alcohol). The project aims to find out which self-help methods are most likely to be helpful and are easy for the community to use. These methods can then be promoted in educational campaigns to improve how people cope with symptoms of depression. If people can take action to reduce milder levels of depression, this may prevent them from progressing to develop a clinical disorder that needs professional treatment.Read moreRead less
The Effect Of High-dose Vitamin-D Supplementation On Mental Health In A Randomised, Controlled Trial Of 1500 Older Women
Funder
National Health and Medical Research Council
Funding Amount
$81,965.00
Summary
Vitamin D is commonly deficient in Western populations, more so in the winter months and in the elderly. A link between depression and vitamin D insufficiency may exist. This study aims to see if vitamin-D supplementation is a practical health intervention for depressive symptoms and may define a public health strategy. In this study participants receive a dose of vitamin D3 or placebo annually for three years. Self-rated psychiatric assessments are administered.
Understanding The Molecular Basis Of Bipolar Affective Disorder
Funder
National Health and Medical Research Council
Funding Amount
$812,250.00
Summary
Bipolar disorder (manic depressive illness) is a severe mood disorder, with a lifetime prevalence of up to 1.6%. The illness is characterised by aberrant mood swings resulting in periods of mania and depression with reversion to normal behaviour between episodes. The condition has a severe impact on sufferers, being demonstrated to be the sixth most disabling disorder in the WHO Global Burden of Disease report and increasing the risk of suicide fifteen-fold. There is a pressing need to define mo ....Bipolar disorder (manic depressive illness) is a severe mood disorder, with a lifetime prevalence of up to 1.6%. The illness is characterised by aberrant mood swings resulting in periods of mania and depression with reversion to normal behaviour between episodes. The condition has a severe impact on sufferers, being demonstrated to be the sixth most disabling disorder in the WHO Global Burden of Disease report and increasing the risk of suicide fifteen-fold. There is a pressing need to define more clearly the biological basis of bipolar disorder as a necessary prerequisite to improved diagnosis and treatment. The underlying causes of bipolar disorder remain unknown. However, family studies reveal the high heritability of bipolar disorder and this familial clustering provides an opportunity to use genetic approaches to identify the predisposing genes. The long-term aim of our research is to investigate the biology of those genes that either cause or predispose to bipolar disorder. We have previously reported strong evidence for a novel bipolar disorder susceptibility gene on chromosome 4, a finding which has subsequently been reproduced in several independent studies. Consequently, we hypothesise that there is a gene located on chromosome 4 that predisposes to bipolar disorder. The aim of this proposal is to identify the chromosome 4 bipolar susceptibility gene and understand how the gene causes bipolar disorder. Identifying the genes responsible for bipolar disorder will allow us to define and understand the biological basis of this severe psychiatric condition. This will ultimately lead to major improvements in the ability to diagnose, treat and prevent the illness.Read moreRead less
Dopamine Mechanisms Conferring Resilience To Depression: A New Antidepressant Target
Funder
National Health and Medical Research Council
Funding Amount
$560,948.00
Summary
A significant proportion of people who suffer depression fail to obtain effective relief from either drugs or psychotherapy. Accordingly, there is a pressing need to develop new, and more effective, treatments. This project will determine whether certain specific brain pathways that use the transmitter dopamine can be manipulated in their activity so as to increase resilience to depression. This work has potential to provide the foundation for the development a new generation of antidepressants.
The Diagnosis Of Depression In Alzheimer's Disease
Funder
National Health and Medical Research Council
Funding Amount
$361,000.00
Summary
During the next 3 decades the number of persons older than 85 years will more than double, and the health care need of this burgeoning population are assuming greater importance. Among the most significant but often overlooked conditions in the elderly is depression, which is associated with marked disability, functional decline, risk of hospitalization, diminished quality of life, caregiver burden, increased service utilization, and mortality from comorbid medical conditions or suicide. The Wor ....During the next 3 decades the number of persons older than 85 years will more than double, and the health care need of this burgeoning population are assuming greater importance. Among the most significant but often overlooked conditions in the elderly is depression, which is associated with marked disability, functional decline, risk of hospitalization, diminished quality of life, caregiver burden, increased service utilization, and mortality from comorbid medical conditions or suicide. The World Health Organization predicts that by 2020 depression will be second only to heart disease as a cause of disability and premature death in established market economies. Depression is missed in approximately half of all elderly persons with mood disorder, and this frequency is certainly higher among individuals with dementia. The strategy to diagnose depression in dementia needs to be revised. Patients' reports are often unreliable due to memory problems and lack of full insight into their mood and behavioural changes. Caregivers may overestimate patients' symptoms of depression, especially when they themselves are depressed and overburdened, and clinicians' diagnoses are sometimes based on biased information and short observation periods. The situation in nursing homes is even worse, and there is a shortage of studies on how to diagnose depression in institutionalised patients with dementia. Using specific instruments to assess mood, behaviour and cognition we will develop valid and reliable criteria to diagnose depression in the different stages of dementia, and for patients living in different settings. This will facilitate the early recognition and adequate treatment of depression in individuals with dementia, it will greatly improve patient's quality of life, and will have a positive impact on caregivers' psychological well-being.Read moreRead less
Effects Of A Midwife-led Counselling Intervention To Improve Postpartum Womens Mental Health
Funder
National Health and Medical Research Council
Funding Amount
$674,240.00
Summary
Prevention of perinatal mental health difficulties is a national priority. In addition to depressed mood, some mothers experience a range of anxiety disorders. Many women report that problems are not discussed or diagnosed and few receive help. We will conduct a trial and qualitative evaluation of an early counselling intervention for distressed postpartum women. The intervention, offered by trained midwives, aims to reduce anxiety, depression and promote positive parenting.
The Efficacy Of N-acetylcysteine As An Adjunctive Treatment In Unipolar Depression
Funder
National Health and Medical Research Council
Funding Amount
$443,832.00
Summary
This is evidence that the brain's antioxidant defences, particularly glutathione, are altered in depression. N-acetylcysteine (NAC), a glutathione precursor, increases antioxidant defences and has antidepressant properties in bipolar disorder. The aim of this study is to see if treatment with NAC will precent relapse and improve the symptoms of depression including functioning and quality of life. Participants will be randomly given either NAC or placebo, in addition to standard thereapy.