Investigating Mechanisms Of Action Of Sacral Nerve Neuromodulation In Faecal Incontinence
Funder
National Health and Medical Research Council
Funding Amount
$81,181.00
Summary
Faecal incontinence (accidental bowel leakage) is a common problem in the Australian community with devastating impacts on quality of life and psychological well-being. Treatment of this condition remains a challenge due to limited scientific knowledge. Sacral nerve modulation (electrostimulation of nerves in the lower back) is an exciting new treatment but we don’t understand how it works. This project aims to improve our understanding of how nerve stimulation improves symptoms.
Identification And Characterisation Of Sensory Receptors In The Human Rectum
Funder
National Health and Medical Research Council
Funding Amount
$69,500.00
Summary
Normal rectal function (with respect to storage and evacuation of faeces) is highly dependent on intact rectal sensation. Identification and characterisation of biomarkers of rectal sensation in health would allow more accurate diagnosis and a better understanding of prevalent bowel disorders, such as constipation and faecal incontinence. It would also give opportunity to identify potential novel therapeutic targets, and accurately assess the efficacy of existing and new treatment strategies.
Role Of Calcium Channels And Small-conductance Potassium Channels In Myenteric Neurons
Funder
National Health and Medical Research Council
Funding Amount
$131,717.00
Summary
This proposal will investigate the electrical properties of neurons in the wall of the intestine that control movements of the bowel. These neurons form an extensive network that runs the length of the gastrointestinal tract and control mixing and propulsion of food along the intestine. We will determine the basic electrical properties of these neurons and investigate why some of them transmit signals in a continuous manner while others transmit signals intermittently and how these patterns of a ....This proposal will investigate the electrical properties of neurons in the wall of the intestine that control movements of the bowel. These neurons form an extensive network that runs the length of the gastrointestinal tract and control mixing and propulsion of food along the intestine. We will determine the basic electrical properties of these neurons and investigate why some of them transmit signals in a continuous manner while others transmit signals intermittently and how these patterns of activity fit into the overall activity of the gut. This study will build on a large body of data obtained from our laboratory that has shown that some of these neurons act as sensors of the presence-absence of food in the intestine while others send signals to the muscle in the wall of the intestine to either relax or contract it so that the food can be processed properly. By knowing what makes these neurons different from each other we will be able to understand what goes wrong in functional bowel disorders where motility is affected, resulting in pain and discomfort.Read moreRead less
The applicant aims to improve treatment of digestive disease by identifying and understanding the interactions between the nervous system and the gastrointestinal (GI) tract, with emphasis on sensory systems.
A vitamin-sized capsule, containing gas sensors, is to be fully developed for assessing the state of health and diagnosing the diseases relevant to gastrointestinal tract. The capsule travels along the tract, transmitting information about the gas species generated by the microorganisms of the gut, which is closely associated with the health of the human under surveillance. The information will be invaluable for diagnostics and adjusting the diet to mitigate and cure the diseases of the guts.
Gastrointestinal Sensory Function In Normal And Diseased States
Funder
National Health and Medical Research Council
Funding Amount
$691,026.00
Summary
Chronic pain and discomfort from the digestive system is a major health care issue world-wide. There is currently no effective treatment for these problems, which often have no apparent organic cause. Lack of treatment is due to a lack of understanding about how sensations are transmitted from the digestive system to the brain. Our research group has unique and powerful techniques that allow us to probe the basic mechanisms of sensory function, and make rapid progress towards finding drugs that ....Chronic pain and discomfort from the digestive system is a major health care issue world-wide. There is currently no effective treatment for these problems, which often have no apparent organic cause. Lack of treatment is due to a lack of understanding about how sensations are transmitted from the digestive system to the brain. Our research group has unique and powerful techniques that allow us to probe the basic mechanisms of sensory function, and make rapid progress towards finding drugs that reduce specific types of sensory signals from the gut. We shall investigate sensory mechanisms in the upper and lower regions of the gut, where symptoms are most prevalent in diseases such as non-cardiac chest pain, functional dyspepsia and irritable bowel syndrome. Six aspects of sensory nerve endings in the gut are to be investigated: 1. The grouping of endings into functional classes (similar to touch or pressure receptors in skin) 2. How endings respond to chemicals and hormones found in the gut 3. How currently available drugs may be useful in reducing sensitivity 4. The mechanisms by which inflammation affects sensitivity 5. How nerve growth factors may trigger changes in sensitivity 6. How pores or channels in nerve endings determine their functionRead moreRead less