Mobile Phones, Radiofrequency Exposure And The Development Of Cognitive Function In Primary School Children
Funder
National Health and Medical Research Council
Funding Amount
$551,477.00
Summary
Increasingly widespread exposure to radiofrequency fields from mobile telephones has raised concern about potential adverse health effects. The WHO has called for further research in children. We will conduct a 3 year study of 600 primary school students focussing on their exposure to mobile phones and cognitive development. If there are no significant effects, the community can be reassured. However if effects are demonstrated, we would need to restrict the use of mobile phones by children.
Transcriptional Regulation Of Gene Expression: Dietary Sialic Acid Interaction In Brain Cognitive Development
Funder
National Health and Medical Research Council
Funding Amount
$46,646.00
Summary
In 2004, 8.2% of Australian live births were preterm with poor long-term cognitive outcomes. Sialic acid (SA), a key component of both human milk oligosaccharides and neural tissues, plays a role in neuronal development. This study will examine the mechanisms of how dietary SA or active learning interacts with genes during brain development. It will benefit the neonatal care of all children, particularly those born premature and ultimately, the quality of life of many Australians.
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
It is known that about 10% of patients over the age of 55 have difficulty with cognition and thinking 3 months after surgery and anaesthesia. Over 2 million operations involving anaesthesia are administered in Australia every year and increasingly the patients are elderly and thus exposed to the risk of cognitive decline after surgery. We have preliminary data showing that people who have mild changes in cognitive function before the surgery (known as mild cognitive impairment) are susceptible t ....It is known that about 10% of patients over the age of 55 have difficulty with cognition and thinking 3 months after surgery and anaesthesia. Over 2 million operations involving anaesthesia are administered in Australia every year and increasingly the patients are elderly and thus exposed to the risk of cognitive decline after surgery. We have preliminary data showing that people who have mild changes in cognitive function before the surgery (known as mild cognitive impairment) are susceptible to further cognitive decline after anaesthesia and surgery. In order to explore the relationship between preoperative cognitive function and postoperative cognitive decline we plan to measure cognition in patients scheduled for elective hip replacement surgery. This is done by asking patients to complete a standard battery of cognitive tests. We will be then able to identify those patients who already have mild cognitive impairment before surgery and by repeated testing after the operation will be able to demonstrate if preoperative cognitive status is a determinant of postoperative cognitive dysfunction. The primary aim of the research is to test whether cognitive impairment before surgery leads to cognitive deficit after surgery in patients over the age of 65 undergoing total hip replacement surgery. The study will also establish the prevalence of pre-operative mild cognitive impairment and the magnitude of postoperative cognitive dysfunction after surgery in this patient group. The study will explore the relationship between preoperative cognitive status and postoperative cognitive deficit , providing information about the incidence, natural history and risk factors of postoperative cognitive deficit. This work will enable further research to isolate specific causative factors and identify therapeutic and prophylactic strategies.Read moreRead less
Lesions of the primary visual area (V1) are sufficient to cause blindness, even though there are many other brain areas normally involved in vision. However, when V1 is lesioned very early in life people show some recovery, and may be able to see well enough to perform everyday activities. In order to understand what happens in the brain that allows this preservation of vision, we will study changes in the pathways linking the eyes to the brain, following lesions at different ages.
Cardiac Intervention, Surgery And Cognitive Outcome (CISCO) Study
Funder
National Health and Medical Research Council
Funding Amount
$367,739.00
Summary
We propose to investigate the association between the presence of coronary artery disease and changes in brain function after therapeutic interventions. Patients undergoing surgery for coronary heart disease are prone to experience changes in mental function and higher level thought processes (cognition) after surgery, especially if they are elderly. As the population ages this is becoming a more significant problem. There is some limited evidence that this particular group of patients has a hig ....We propose to investigate the association between the presence of coronary artery disease and changes in brain function after therapeutic interventions. Patients undergoing surgery for coronary heart disease are prone to experience changes in mental function and higher level thought processes (cognition) after surgery, especially if they are elderly. As the population ages this is becoming a more significant problem. There is some limited evidence that this particular group of patients has a higher incidence of cognitive impairment than the normal population even before they present for surgery, because cardiovascular disease has also been shown to be associated with changes in cognition. To investigate this, we will measure cognitive status in patients over the age of 55 who have coronary artery disease and are being investigated with coronary angiography. This will provide an indication of the baseline cognitive status in patients presenting with coronary vascular disease. We will use validated neuropsychological tests that have been used to assess potsoperative cognitive decline. These tests are sufficiently sensitive to detect subtle changes in a number of areas of thought processing (cognitive domains) and thus identify those subjects who have cognitive impairment. Patients will then go on to be treated by surgery or angioplasty. We will continue to test these patients at time intervals for 3 months in order to track the changes in cognition in each treatment group. Thus we will be in the position to compare how these modalities of treatment for heart disease impact on patients mental function and cognition. In addition we will be able to tell whether a 'recovery' period might be of benefit following coronary angiography. If we are able to demonstrate different cognitive outcomes from different treatments and also an association with pre-existing cognition, this will guide clinical decision making to minimise harm to the brain.Read moreRead less
The Cognitive Impact Of Opioids During Chronic Administration
Funder
National Health and Medical Research Council
Funding Amount
$416,024.00
Summary
Many people are now being prescribed opioid drugs for long periods of time, mainly for the treatment of chronic pain. These drugs can adversely affect the person's ability to drive a car, hold down a job, and perform normal functions of daily living. This project will investigate what types of impairment are produced by these drugs and how the drugs can best be used so as to minimise the effects on patients.
Effects Of Oestrogen On Mood, Memory And Quality Of Life Of Women Aged 70 Years Or Over
Funder
National Health and Medical Research Council
Funding Amount
$170,990.00
Summary
Oestrogen has a number of actions that extend well beyond the regulation of the reproductive cycle and sexual behaviour. The results of recent studies indicate that oestrogen may influence mood and a number of intellectual abilities such as memory and language. In addition, oestrogen replacement therapy seems to reduce the risk of Alzheimer's disease (the most frequent cause of dementia in Western societies) amongst postmenopausal women. The present study aims to: (1) investigate the association ....Oestrogen has a number of actions that extend well beyond the regulation of the reproductive cycle and sexual behaviour. The results of recent studies indicate that oestrogen may influence mood and a number of intellectual abilities such as memory and language. In addition, oestrogen replacement therapy seems to reduce the risk of Alzheimer's disease (the most frequent cause of dementia in Western societies) amongst postmenopausal women. The present study aims to: (1) investigate the association of depression and memory performance with physiological levels of oestrogen in women aged 70 years or over; and (2) investigate the evolution of depression and memory scores in old women treated with oestrogen replacement therapy as compared to placebo. The results of the present study may have important implications in the prevention and management of two of the most relevant mental health disorders of later life: depression and Alzheimer's disease.Read moreRead less
What Is The Burden Of Dementia In Urban Dwelling Indigenous Australians?
Funder
National Health and Medical Research Council
Funding Amount
$1,571,527.00
Summary
The main aim of this research project is to determine what proportion of Aboriginal people aged 45 years and older who live in urban areas of NSW, have dementia. We hope to establish what types of dementia occur amongst Aboriginal people, what the causes are, and how we can best measure dementia. We will also focus on what types of problems dementia causes for both people with the condition and their carers. What is the meaning of dementia for Aboriginal people themselves?
The Neurophysiology Of Abnormal Motor Development In Preterm Children
Funder
National Health and Medical Research Council
Funding Amount
$479,967.00
Summary
Better neonatal care has improved survival of prematurely born children. While most of these children will have no obvious brain lesion and attend mainstream schools, many will experience motor and cognitive difficulties and problems with social adjustment. However, the physiological mechanisms underlying this dysfunction are unknown. We will study preterm and term born children to elucidate the physiological mechanisms underlying motor and cognitive dysfunction associated with prematurity.