The brain exerts a restraining influence over the heartbeat via the vagus nerves. This is known as cardiac vagal ‘tone’. It is strong when we are healthy but weak when we are sick. It has a positive influence on the health of the heart and perhaps the body generally. Vagal tone comes from the brain but, despite over 150 years’ research, nobody knows exactly where. Using a novel technique, we can track down its origins. This important basic knowledge may lead to ways to improve health.
Mechanical Factors In Normal Human Colonic Motility
Funder
National Health and Medical Research Council
Funding Amount
$650,023.00
Summary
Abnormal human colonic contractions cause significant medical, societal and financial burdens. Diagnosis and treatment of motility disorders requires an understanding of normal colonic contractility against which to measure dysfunction. Through state-of-the-art recording and analytical techniques, developed by the applicants, this project will provide the first clear description of normal human colonic motor patterns and how they are generated.
Localised Airway Reactivity As A Determinant Of Asthma Control And AHR
Funder
National Health and Medical Research Council
Funding Amount
$306,562.00
Summary
Asthma morbidity and mortality remain high, with drug cost, days lost from school and work. This may be due to severe asthma in which control cannot be attained. This may be due to localised regions of lung that remain persistently responsive to inhaled irritants. We will examine the location and size of these regions using 3-dimensional ventilation scanning. The potential importance of our findings is in providing a basis for improving treatment in resistant, severe asthma.
Restoring Microcirculatory Perfusion In ST-elevation Myocardial Infarction: The RESTORE MI Study
Funder
National Health and Medical Research Council
Funding Amount
$3,274,537.00
Summary
Current heart attack treatments have focussed on re-opening the blocked coronary artery but despite this, many patients still suffer significant heart damage because of inadequate blood flow to the heart muscle due to damage to the small blood vessels - the microcirculation. This study seeks to identify heart attack patients with damage to the microcirculation and will conduct a randomised trial of clot busting medications to reduce microcirculation damage and to improve heart function.
Intrinsic Hearing Protection Mechanisms: A Pathway To Prevention Of Noise-induced Hearing Loss
Funder
National Health and Medical Research Council
Funding Amount
$625,900.00
Summary
Noise-induced hearing loss (NIHL) is a significant contributor to the total burden of disease. We recently determined that when the ear is exposed to sustained noise, the cochlea is protected from damage by activation of a specific (P2X2) receptor, evident as reversible hearing adaptation. This study will determine the downstream signalling from this receptor. This will support assessment of vulnerability to NIHL and contribute to development of hearing therapeutics.
Mechanisms Underlying The Contribution Of Uremic Toxins To Cardiorenal Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$413,533.00
Summary
Cardiorenal syndrome (CRS) is an umbrella term that defines disorders of the heart and kidneys whereby “acute or chronic dysfunction in one organ may induce acute or chronic dysfunction of the other”. We have demonstrated a significant association between heart and kidney fibrosis (scarring) and levels of a uremic toxin called indoxyl sulphate (IS), in relevant animal models and that blockade of production of this toxin reduces cardiac fibrosis. This project aims to explore this association.
Novel Therapy For Heart Failure With Preserved Ejection Fraction
Funder
National Health and Medical Research Council
Funding Amount
$1,068,984.00
Summary
Heart failure is a major cardiovascular problem. Up to half of the patients have a specific problem with heart muscle relaxation. There is no effective therapy for this type of heart failure. We will investigate the effects of new treatment approach using a range of experimental and clinical methods. If successful the treatment could move quickly into clinical practice.
The Role Of Tissue Hypoxia In The Evolution Of Kidney Disease
Funder
National Health and Medical Research Council
Funding Amount
$509,391.00
Summary
We will determine how low oxygen levels in the kidney lead to kidney disease. We can now measure the levels of oxygen in kidney tissue in rats 24 hours a day, 7 days a week, in a completely non-invasive way. We will study two common kinds of kidney disease. One, acute kidney injury, can result from administration of contrast agents used in x-ray diagnostic procedures. The other, chronic kidney disease, is common in patients with diabetes or high blood pressure.
Predicting The Long Term Lung Health Outcomes In Young Adults Born Very Preterm
Funder
National Health and Medical Research Council
Funding Amount
$854,201.00
Summary
Preterm birth and its resulting lung problems can lead to breathing problems during childhood and into adult life. There are very few lung health studies that have tracked preterm individuals from childhood and into early adult life. This study will conduct a detailed lung health assessment in a follow-up of a group of preterm individuals at 19 years of age. We aim to identify if information we obtained in the group at 6 and 11 years can predict how the lungs look and behave at 19 years of age.
Immune Recognition Of Upper Airway Microbiota In Early Life As A Determinant Of Respiratory Health In Children
Funder
National Health and Medical Research Council
Funding Amount
$1,135,837.00
Summary
The study will investigate the impact of respiratory infections during infancy on lung & immune function & respiratory health between 3-7 years of age. Children were previously enrolled in a population based birth cohort study (ORChID study) which collected detailed information about the respiratory health during the first 2 years of life with daily respiratory diary & weekly nasal swab collection. In this study lung function & immune function will be assessed annually in the same children (3-7)