Modelling The Characteristics And Symptoms In First-episode Psychosis From Baseline To Long-term Follow-up
Funder
National Health and Medical Research Council
Funding Amount
$22,257.00
Summary
Relatively little is known about the progression of first-episode psychosis over the longer term. This research will investigate the course and evolution of psychiatric symptoms in over 600 psychotic patients up to 10 years following initial admission. It may be possible to identify groupings of patients with similar patterns of change in symptoms, along with factors underlying different patterns of symptom course, which may help distinguish the fundamental mechanisms underlying psychosis.
The cognitive neuroscience of executive control: behavioural, physiological and genetic mechanisms. How genes influence our human abilities to think, reason and control behaviour has puzzled scientists for decades. The human genome project has allowed us to ask how individual genes influence these capacities. Understanding the genetics of these abilities provides a solid platform from which to launch gene discovery projects in clinical disorders where these abilities are compromised. The curr ....The cognitive neuroscience of executive control: behavioural, physiological and genetic mechanisms. How genes influence our human abilities to think, reason and control behaviour has puzzled scientists for decades. The human genome project has allowed us to ask how individual genes influence these capacities. Understanding the genetics of these abilities provides a solid platform from which to launch gene discovery projects in clinical disorders where these abilities are compromised. The current project is directly relevant to the genetics of mental disorders, such as attention deficit hyperactivity (ADHD), that place a large burden, both financially and emotionally, on our society. Understanding the genes and biological pathways that increase risk for mental disorders will ultimately lead to improved treatments for these conditions.Read moreRead less
Models of adolescent drug use and its consequences. Recent concerns surround the impact of drug abuse - particularly binge drinking, inhalant abuse and cannabis use - on the mental health of adolescents. Early drug use is associated with mental health problems although the mechanisms involved are not well characterised. The present proposal aims to use animal models to characterise substance abuse that occurs during the adolescent period and to investigate its effects on brain and behaviour. Inc ....Models of adolescent drug use and its consequences. Recent concerns surround the impact of drug abuse - particularly binge drinking, inhalant abuse and cannabis use - on the mental health of adolescents. Early drug use is associated with mental health problems although the mechanisms involved are not well characterised. The present proposal aims to use animal models to characterise substance abuse that occurs during the adolescent period and to investigate its effects on brain and behaviour. Increasing our knowledge of the causes and consequences of adolescent drug abuse will improve Australia's ability to confront this problem and to develop early interventions and treatments that minimise associated harms.Read moreRead less
Genes, neuroanatomy and family process: Predicting adolescent anxiety and depression. Whilst significant gains in outcomes have been obtained in other areas of health by focusing on early intervention and prevention, in the mental health field this approach has been limited by the paucity of developmentally targeted treatment and prevention strategies. This study will provide unique information regarding the risk processes that are operating during early and late adolescence, and will inform us ....Genes, neuroanatomy and family process: Predicting adolescent anxiety and depression. Whilst significant gains in outcomes have been obtained in other areas of health by focusing on early intervention and prevention, in the mental health field this approach has been limited by the paucity of developmentally targeted treatment and prevention strategies. This study will provide unique information regarding the risk processes that are operating during early and late adolescence, and will inform us about how the family environment can act to modulate the impacts of biological vulnerability on risk for mental disorder. This project will contribute to our understanding of who, and what, to target in early intervention and prevention strategies.Read moreRead less
Studying the effects of repetitive transcranial magnetic stimulation with near Infrared spectroscopy. Repetitive transcranial magnetic stimulation (rTMS) is increasingly being used as a tool in studying human and animal brain function and in the treatment of brain disorders but there are fundamental gaps in our understanding of its basic mechanisms of action and hence our capacity to optimise protocols. This research will use near infrared spectroscopy to study the range of potential ways of alt ....Studying the effects of repetitive transcranial magnetic stimulation with near Infrared spectroscopy. Repetitive transcranial magnetic stimulation (rTMS) is increasingly being used as a tool in studying human and animal brain function and in the treatment of brain disorders but there are fundamental gaps in our understanding of its basic mechanisms of action and hence our capacity to optimise protocols. This research will use near infrared spectroscopy to study the range of potential ways of altering brain activity with rTMS. It will substantially enhance the applicability of the technique ultimately improving our knowledge of human and animal brain function and outcomes for patients with depression and other disorders. It will help reinforce Australia as a leading country in the development of brain stimulation techniques.Read moreRead less
A Prospective Cohort Study Of Mortality, Abstinence, Criminality And Psychiatric Comorbidity
Funder
National Health and Medical Research Council
Funding Amount
$419,500.00
Summary
Over 70 000 Australians are dependent on heroin. Heroin dependence is remarkably persistent and is, in many cases, a lifelong condition. Long term treatment outcome and abstinence from heroin among this group are poor. Mortality among heroin users is high, with heroin users dying at a rate 13 times that of peers. Despite the extent of the problem, the natural history of heroin users has not yet been studied in Australia. The current study will be the first Australian study of the natural history ....Over 70 000 Australians are dependent on heroin. Heroin dependence is remarkably persistent and is, in many cases, a lifelong condition. Long term treatment outcome and abstinence from heroin among this group are poor. Mortality among heroin users is high, with heroin users dying at a rate 13 times that of peers. Despite the extent of the problem, the natural history of heroin users has not yet been studied in Australia. The current study will be the first Australian study of the natural history of heroin users. The study will follow up a large cohort of heroin users over a three year period. Estimates will be obtained of mortality rates, abstinence rates, criminal careers, and psychiatric problems among heroin users. It will also examine factors that predict abstinence, mortality, criminality and levels of psychopathology, and determine the health costs associated with heroin use careers. The study will provide essential data on how heroin use progresses, and on what factors predict a better outcome for heroin users.Read moreRead less
Efficacy Of Treatment For Resistant Command Hallucinations.
Funder
National Health and Medical Research Council
Funding Amount
$343,875.00
Summary
Auditory hallucinations (AHs), often described as voices, are a common symptom of schizophrenia and psychoses. Command hallucinations (CHs) are a type of AH in which the voice heard by the patient commands him or her to perform a particular action. The nature of the directive may vary from inconsequential actions to commands to harm the patient or others. There is widespread public concern about the danger individuals with schizophrenia or related disorders pose to themselves and to the communit ....Auditory hallucinations (AHs), often described as voices, are a common symptom of schizophrenia and psychoses. Command hallucinations (CHs) are a type of AH in which the voice heard by the patient commands him or her to perform a particular action. The nature of the directive may vary from inconsequential actions to commands to harm the patient or others. There is widespread public concern about the danger individuals with schizophrenia or related disorders pose to themselves and to the community. There is firm evidence pointing to the important role that CHs play in propelling psychotic individuals into serious and damaging actions. We have found, however, that most individuals who comply with dangerous CHs do so, not because they are angry, violent, antisocial or wish to cause harm, but because they feel powerless to resist. Though CHs are one of the most disturbing symptoms of psychosis, standard treatment has proved to be of limited benefit. This study will evaluate the effectiveness of Treatment of Resistant Command Hallucinations (TORCH), an innovative treatment for CHs. TORCH is an extension of an existing treatment for psychosis that we previously developed. TORCH aims to reduce the distress, worry and harmful or self-defeating behaviour associated with CHs by arming the patient with effective strategies that will enhance resistance and reduce compliance. The project has clear implications for improved clinical and therapeutic management of CHs with major public health, clinical and forensic repercussions. The consequences of being formally assessed as being at risk of acting violently result in the potential for substantial restrictions on the freedom of the individual. The availability of TORCH may prompt a less restrictive management of individuals at risk of dangerous behaviour and promote a more optimistic attitude amongst clinicians. Relatives and carers also stand to benefit through reduction in perplexing and fear-inducing behaviours.Read moreRead less
A Prospective Study Of The Psychiatric & Medical Characteristics Of Post-infective Fatigue & Chronic Fatigue Syndrome.
Funder
National Health and Medical Research Council
Funding Amount
$500,000.00
Summary
This project forms the central component of a larger set of studies which investigate competing psychiatric, immunological and infective models of the causes of a number of chronic fatigue syndromes, including post-infective fatigue. The study takes place in western NSW where certain viral illnesses (Glandular Fever, Ross River Virus) and a non-viral infection (QF) are common and have been associated with prolonged fatigue states. The study follows patients from laboratory-documented infections ....This project forms the central component of a larger set of studies which investigate competing psychiatric, immunological and infective models of the causes of a number of chronic fatigue syndromes, including post-infective fatigue. The study takes place in western NSW where certain viral illnesses (Glandular Fever, Ross River Virus) and a non-viral infection (QF) are common and have been associated with prolonged fatigue states. The study follows patients from laboratory-documented infections with appropriate infective, immunological and psychological measures throughout the course of their acute illness, the early recovery period and for the next 12 months. These patients are compared with people who present to their doctor with other forms of medically-unexplained fatigue. Very few previous studies have used an appropriate prospective design and followed patients with documented illness from the onset through to the development of specific forms of chronic fatigue. Further, the study is unique in terms of the range of viral and non-viral agents being investigated. It relies on the combined psychiatric, immunological and infective disease expertise of a group of researchers with an international reputation for the successful completion of such multidisciplinary projects. The initial phase of the study has demonstrated that the research team has the capacity to complete this project. Initial results have already demonstrated the potential roles of psychological and immunological factors in causing some cases of prolonged fatigue. Further, the initial results indicate that two key symptom sets (fatigue, psychological distress) can be adequately measured during the recovery phase and are predicted by differing psychological factors. The study will result in the identification of different psychiatric risk factors to chronic fatigue, assist development of clear diagnostic guidelines for post-infective fatigue and guide relevant aetiological and treatment research.Read moreRead less
Normal and abnormal processes of social attention orienting. Human beings are capable of rapidly detecting the direction of another person's eye-gaze and shifting attention reflexively in that direction. This project will compare shifts of attention to non-social and social cues of direction to determine whether attentional shifts to gaze-direction are fast because humans are biologically hard-wired to respond to social cues of evolutionary significance (eyes) or because humans are well-practice ....Normal and abnormal processes of social attention orienting. Human beings are capable of rapidly detecting the direction of another person's eye-gaze and shifting attention reflexively in that direction. This project will compare shifts of attention to non-social and social cues of direction to determine whether attentional shifts to gaze-direction are fast because humans are biologically hard-wired to respond to social cues of evolutionary significance (eyes) or because humans are well-practiced at using a number of different signals for direction in their environment. Findings from this work will than be used to investigate whether a selective impairment of responding to gaze-direction contributes to the social impairments so characteristic of people with schizophrenia.
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A Prospective Study Investigating Implications Of Bioactive Lipids For Diagnosis And Treatment Of Schizophrenia
Funder
National Health and Medical Research Council
Funding Amount
$324,480.00
Summary
This study will investigate the role of fatty acids (lipids) in schizophrenia. Studies in blood cells and in the brains of patients with schizophrenia have shown that these lipids and related products are altered in schizophrenia. We are now able to measure separate lipid metabolites in the living human brain using a technique called magnetic resonance spectroscopy. Until recently it was only possible to assess lipid metabolites as a group, limiting interpretation. Thanks to a newly available im ....This study will investigate the role of fatty acids (lipids) in schizophrenia. Studies in blood cells and in the brains of patients with schizophrenia have shown that these lipids and related products are altered in schizophrenia. We are now able to measure separate lipid metabolites in the living human brain using a technique called magnetic resonance spectroscopy. Until recently it was only possible to assess lipid metabolites as a group, limiting interpretation. Thanks to a newly available imaging system at the Brain Imaging Research Institute and a new analysis technique, we will be able to measure single lipid metabolites in the living human brain. Simultaneously we will also measure lipids and related enzymes in red blood cells that are responsible for the regulation of these lipids. Preliminary data has shown that there is a strong correlation between these two measures. Furthermore we will investigate the genes that are responsible for the production of these enzymes. By repeating the same tests after 12 weeks we hope to understand how the newer antipsychotic drugs act. Two easy clinical tests (a skin and breath test) will help us to implement the findings in daily clinical practice (diagnostic markers for patients at risk) . With such a multi-level approach we hope to contribute to a new understanding of the origins of schizophrenia going beyond the traditional concepts. The findings might also have direct implications for treatment. Preliminary results are very promising but also contradictory. Therefore it is even more important to carefully investigate the role of these lipids in schizophrenia.Read moreRead less