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The Genitofemoral Nerve And Gubernaculum In Testicular Descent And Inguinal Hernia
Funder
National Health and Medical Research Council
Funding Amount
$339,750.00
Summary
This project examines the mechanism of descent of the testis, which when abnormal, leads to the common anomaly in infant boys of undescended testes. In addition, the tunnel through the abdominal wall which permits testicular descent very commonly fails to close afterwards, allowing the intestines to protrude through the hole to cause an inguinal hernia, which is a tender lump in the groin,and requires surgery to resolve. Our long-term aim is to understand testicular descent and inguinal closure ....This project examines the mechanism of descent of the testis, which when abnormal, leads to the common anomaly in infant boys of undescended testes. In addition, the tunnel through the abdominal wall which permits testicular descent very commonly fails to close afterwards, allowing the intestines to protrude through the hole to cause an inguinal hernia, which is a tender lump in the groin,and requires surgery to resolve. Our long-term aim is to understand testicular descent and inguinal closure well enough to develop non-surgical treatments for these two conditions, which are the two commonest abnormalities in children requiring surgery. We will examine how male hormones control descent of the testis indirectly by altering the anatomy and function of a specific nerve suplying the groin and scrotum. A simple and safe treatment that avoided surgery would be a major advance for infants in the developing world.Read moreRead less
The Limb Bud As A Model For Gubernacular Migration During Inguinoscrotal Testicular Descent.
Funder
National Health and Medical Research Council
Funding Amount
$439,073.00
Summary
This project examines the mechanism of descent of the testes from its original position inside the abdomen of the fetus to the scrotum in baby boys. When this process is abnormal, it leads to the common anomaly of undescended testes. Tha ultimate aim is to understand the process well enough to consider nonoperative treatment. The study will look at the tip of the gubernaculum, the ligament that anchors the testis to the groin early in development, and how it develops a growing tip that elongates ....This project examines the mechanism of descent of the testes from its original position inside the abdomen of the fetus to the scrotum in baby boys. When this process is abnormal, it leads to the common anomaly of undescended testes. Tha ultimate aim is to understand the process well enough to consider nonoperative treatment. The study will look at the tip of the gubernaculum, the ligament that anchors the testis to the groin early in development, and how it develops a growing tip that elongates towards the scrotum. The project will examine the factors controlling this process as well as the embryological mechanism involved.Read moreRead less
Molecular And Cellular Mechanisms Of Vertebrate Brain Development
Funder
National Health and Medical Research Council
Funding Amount
$586,428.00
Summary
The essential steps in forming a normal functioning brain occur during life as an embryo. If these processes go haywire, there can be serious repercussions for life after birth. This project seeks to understand how the brain forms during embryonic stages so that better treatments and procedures can be developed to deal with developmental problems.
The Use Of Soluble Antagonists Of EphA4 In Spinal Cord Injuries
Funder
National Health and Medical Research Council
Funding Amount
$622,361.00
Summary
Permanent and limited recovery of function following spinal cord injury is a direct result of the lack of nerve regrowth through the injury. Our preliminary data suggest that antagonising the effects of EphA4, a protein involved in brain development, leads to substantial functional recovery simultaneous with nerve regrowth. In addition to designing new, more effective blockers of EphA4, we will study the signalling pathways that EphA4 activates to inhibit nerve regrowth.
Nerve growth factors are essential to promote nerve regeneration and are potential drugs for the treatment of nervous disorders such as spinal cord injury. Our recent result demonstrates that the precursor form of the nerve growth factor brain derived neurotrophic factor (proBDNF) is detrimental to an injured nervous system and can cause nerve degeneration. This project further investigates the phenomenon in order to promote treatment of spinal cord injury.
Auditory Nervous System Function After Treatment With Trophic Agents
Funder
National Health and Medical Research Council
Funding Amount
$544,890.00
Summary
Partial or complete deafness affects 11% of Australians and has great personal, social and economic cost . Worldwide, over 60,000 deaf people can now understand spoken language because of the Bionic Ear. However, after prolonged deafness, the nerves in the ear that the BIonic Ear stimulates die, reducing hearing quality. Our research tests whether biological interventions with nerve growth factors and nerve stimulation can preserve nerve function and improve hearing with the Bionic Ear.
Multimodal Woven BioPolymer Fibre Conduits For Remodelling Damaged Peripheral Nerve
Funder
National Health and Medical Research Council
Funding Amount
$686,901.00
Summary
Damage to peripheral nerve arises as a result of trauma or disease ranging in severity from mild to severe incapacitation. Currently surgeons remove healthy nerve from individuals with nerve damage to repair more important priority nerves. We aim to create an effective implant for nerve repair that totally degrades leaving behind the regenerated nerve. This will eliminate the need for nerve harvesting as well as restoring lost nerve function in individuals with nerve injury.
Mechanisms Controlling The Excitability Of Corneal Nociceptor Nerve Terminals
Funder
National Health and Medical Research Council
Funding Amount
$364,759.00
Summary
The project uses a new approach that allows, for the first time, electrical activity to be recorded and analysed from the very fine nerve endings of nerves whose activation results in painful sensations. Using this technique the mechanisms by which substances released in damaged and inflamed tissues lead to discharge of action potentials and the sensation of pain will be investigated. In particular the project investigates the role of a population of sodium ion selective pores (channels) that ar ....The project uses a new approach that allows, for the first time, electrical activity to be recorded and analysed from the very fine nerve endings of nerves whose activation results in painful sensations. Using this technique the mechanisms by which substances released in damaged and inflamed tissues lead to discharge of action potentials and the sensation of pain will be investigated. In particular the project investigates the role of a population of sodium ion selective pores (channels) that are uniquely expressed in pain sensing nerves. These channels have been hypothesised to play an important role in determining the behaviour of these nerves. In addition, the project investigates how some substances released in inflamed tissues sensitize pain sensing nerves, causing them to more readily discharge action potentials. This change is the major cause of pain associated with inflammatory diseases such as arthritis. In summary, the proposed project will provide new insight into how pain sensing nerves function. This knowledge is essential for the development of more effective strategies for treating pain resulting from inflamed and damaged tissue.Read moreRead less