RCT Of Omega-3 Fatty Acids As Treatment Of Subthreshold Symptoms In Young People At Ultra-high Risk For
Funder
National Health and Medical Research Council
Funding Amount
$280,102.00
Summary
Omega-3 fats are a type of polyunsaturated fat which has long been thought to be beneficial for health. The body cannot make its own omega-3 fats - they must be taken in through the diet, or in supplement form. Large population-based studies have suggested that a diet rich in omega-3 fats can reduce the risk of cardiovascular disease, lower blood pressure, cut the risk of cancers such as prostate and skin. The fats have also been touted as a treatment for arthritis, asthma, and inflamed bowels. ....Omega-3 fats are a type of polyunsaturated fat which has long been thought to be beneficial for health. The body cannot make its own omega-3 fats - they must be taken in through the diet, or in supplement form. Large population-based studies have suggested that a diet rich in omega-3 fats can reduce the risk of cardiovascular disease, lower blood pressure, cut the risk of cancers such as prostate and skin. The fats have also been touted as a treatment for arthritis, asthma, and inflamed bowels. A lack of omega-3s during foetal development can hinder brain and eye development. Other work has suggested that a diet rich in omega-3 may help improve mental health. Studies revealed beneficial effects in a broad range of mental health problems including violent and aggressive behaviour in teenagers, major depression, bipolar affective disorder, borderline personality disorder, and schizophrenia. Evidence that omega-3 fatty acids may reduce symptoms in schizophrenia and other major psychiatric disorders make omega-3 fatty acids an optimal candidate for further evaluation of its therapeutic efficacy, in particular in young people in early illness stages of psychosis where specific intervention is controversial due to potential risks and medication side-effects. The proposed 12-week intervention study aims to establish a new treatment strategy alternative to antipsychotic medication in the young people with subthreshold symptoms at high risk for psychosis. Omega-3 fatty acids have no clinically relevant side effects which often accompany therapy with antipsychotics (such as diabetes and weight gain). A widely available, easy applicable, biological treatment without clinically relevant side effects could help to improve compliance and outcome in psychosis. Schizophrenia is often prolonged and results in a considerable economic burden. Early treatment has the potential to offset future costs to both mental health providers and the recipients of these services.Read moreRead less
Phosphoproteomics: Metabolic And Exercise Signalling Markers For Sedentary And Trained Individuals
Funder
National Health and Medical Research Council
Funding Amount
$1,222,500.00
Summary
It is widely recognized that diet and exercise have a major influence on the health and fitness. Sedentary lifestyles predispose people to obesity and the early development of age onset diseases. In the past decade we have gained considerable insight into the regulatory links between exercise and metabolism particularly involving the AMPK signalling pathway. This project is concerned with the phosphoproteome of trained and untrained skeletal muscle, fat and erythrocytes as a marker of fitness.
Approaches to combat AIDS and its causative agent, the human immunodeficiency virus HIV-1, have thus far proved ineffective. The proposed research program intends to investigate the nuclear import of two HIV-1 proteins which have central roles in HIV infection. We will apply our expertise in the area of the regulation of nuclear import of viral proteins, and build on our observations with respect to these proteins to attempt to establish the mechanistic basis of their nuclear import, and how thi ....Approaches to combat AIDS and its causative agent, the human immunodeficiency virus HIV-1, have thus far proved ineffective. The proposed research program intends to investigate the nuclear import of two HIV-1 proteins which have central roles in HIV infection. We will apply our expertise in the area of the regulation of nuclear import of viral proteins, and build on our observations with respect to these proteins to attempt to establish the mechanistic basis of their nuclear import, and how this differs from the conventional nuclear import pathways used by normal cellular proteins. We already have evidence that nuclear import of HIV-Tat is regulated in novel fashion by cellular factors, and intend, through determining its mechanistic basis, to be able to form the basis of a strategy to block this import pathway specifically, and thereby inhibit HIV replication. This may form the basis in the future of a new pharmaceutical approach to combat HIV-AIDS.Read moreRead less
HIV infection of CD4+ lymphocytes leads to a high rate of reproduction of new virus. However, in the brain, HIV infection of the astrocytes does not yield high levels of new virus. HIV is genetically active in these astrocytes, producing high levels of the messenger molecules, the so-called mRNA, that code for the proteins required for a new virus particle. We have determined that these HIV mRNAs are specifically prevented from translating into protein. The mechanisms controlling protein transla ....HIV infection of CD4+ lymphocytes leads to a high rate of reproduction of new virus. However, in the brain, HIV infection of the astrocytes does not yield high levels of new virus. HIV is genetically active in these astrocytes, producing high levels of the messenger molecules, the so-called mRNA, that code for the proteins required for a new virus particle. We have determined that these HIV mRNAs are specifically prevented from translating into protein. The mechanisms controlling protein translation from RNA are relatively poorly understood compared with the other control points of cellular gene expression, such as the synthesis of mRNA. This project examines how astrocytes rapidly detect the presence of HIV mRNA and alter their translation machinery to halt the expression of HIV protein. This host defence mechanism involves two key components; the cellular component that identifies and responds to the viral mRNA, and the structural features of the HIV mRNA that enable the cell to detect its viral origin. We will study how translation of HIV proteins requires both HIV and cellular factors. We will determine the impact of both viral RNA elements and viral RNA binding proteins on the translation of viral and cellular proteins. The contribution of the type-1 interferons that are produced in response to viral infection will be studied for their role in augmenting the inhibition of HIV protein translation. Since HIV infected astrocytes significantly contribute to the onset of AIDS dementia, we will sees a strategy to lock HIV into a dormant state in the brain and thereby prevent the neurodegenerative disease associated with HIV. We will use the anti-viral mechanism blocking HIV protein translation in astrocytes to protect other cell populations, such as the CD4+ lymphocytes, from HIV infection. These studies will also give insights into the general mechanisms for translational control of gene expression in human cells.Read moreRead less