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OBJECTIVE To examine doctors' perceptions and attitudes to prescribing within the Authority Prescribing System (APS). DESIGN AND SETTING Questionnaire survey of Australian doctors' responses to a number of statements and factorial vignettes, conducted between 1 May and 30 June 2001. PARTICIPANTS A national random sample of 1200 doctors, stratified(More)
OBJECTIVE This study was undertaken to address the vascular effects of isolated isoflavones as potential contributors to their cardioprotective properties, focusing on biochanin and formononetin. METHODS AND RESULTS In a randomized, double-blind trial, 80 healthy subjects, 46 men and 34 women, 45 to 75 years of age, received isoflavones enriched in either(More)
BACKGROUND Dietary phytoestrogens are ligands for the estrogen receptor and may mimic estrogenic effects in vivo. OBJECTIVE To assess the biological activity of isoflavone phytoestrogens, we analyzed the effect of dietary soy isoflavone supplementation on in vivo bioassays of estrogenicity. DESIGN Fifty healthy postmenopausal women aged 50-75 y(More)
Immunohistochemical detection of the protein, Fos, was used to identify neurons in the brain activated following a volume load. The plasma expanders, Haemaccel and 6% dextran, were infused intravenously in conscious rabbits for 60 min. Compared to control animals both stimuli significantly increased right atrial pressure but had no effect on blood pressure.(More)
BACKGROUND Twenty-four hour ambulatory blood pressure thresholds have been defined for the diagnosis of mild hypertension but not for its treatment or for other blood pressure thresholds used in the diagnosis of moderate to severe hypertension. We aimed to derive age and sex related ambulatory blood pressure equivalents to clinic blood pressure thresholds(More)
OBJECTIVE To describe the natural history, treatment and cost of Ross River virus-induced epidemic polyarthritis (RRV disease). DESIGN Questionnaire-based longitudinal prospective study. PARTICIPANTS AND SETTING Patients in the greater Brisbane area, Queensland, diagnosed with RRV disease by their general practitioners based on clinical symptoms and(More)
In the rabbit, vagotomy combined with arterial baroreceptor denervation abolishes the renal sympathoinhibition elicited by volume expansion. However, the effect of removing cardiopulmonary afferents alone has not been investigated. The aim of the present study was to determine the role of the cardiac afferents in the renal sympathetic response elicited by(More)
BACKGROUND To determine if novel measures of cardiovascular health are associated with prevalence or progression of age-related macular degeneration (AMD). METHODS Measures of the cardiovascular system: included intima media thickness (IMT), pulse wave velocity (PWV), systemic arterial compliance (SAC), carotid augmentation index (AI). For the prevalence(More)
Power spectral analysis of heart rate (HR) variability was tested in conscious rabbits to assess the reliability of this method for assessing cardiac autonomic function in normal rabbits under resting conditions. Evaluation of power spectrum was performed in 5 rabbits under normal resting conditions and after sympathetic, parasympathetic and combined(More)