Kennedy鈥檚 Disease, also known as spinal and bulbar muscular atrophy (SBMA), is a rare genetic disorder which causes the death of nerve cells in the spinal cord, as well as muscles that control voluntary movement. Roughly 1 in 40,000 worldwide has Kennedy鈥檚 Disease, and it can severely affect quality of life through symptoms such as muscle tremors and cramping. Patients also suffer difficulty swallowing and speaking, and eventually become non-ambulatory.
There is currently no cure or effective therapy for the disease, but Heather Montie, PhD, assistant professor of neuroscience, physiology and pharmacology, is hoping to change that. Thanks to a new, $151,000 grant from the National Institutes of Health, Dr. Montie and her team will spend the next two years creating a preclinical research model using zebrafish, which will hopefully help drive research in SBMA and eventually, help lead to a therapy for patients.
鈥淚n the zebrafish model, the disease will likely develop in a way similar to how it develops in humans,鈥� explains Dr. Montie. 鈥淭his model is more cost-effective than other models, and with it, data can also be generated more quickly.鈥�
Dr. Montie knows first-hand the need for an effective treatment for Kennedy鈥檚 Disease; her father passed away from the disease in 2011, two of her uncles are also suffering from the disease, and she has two nephews at risk. As a result, Dr. Montie鈥檚 lab has been focused on better understanding the molecular pathways that cause the disease, in order to develop therapeutic interventions.
The mutation responsible for the disease occurs in the androgen receptor gene on the X-chromosome. The disease only affects males (who have only one X chromosome), where one mutated copy of the gene is found in each cell. That mutation, coupled with male hormones that bind the androgen receptor, causes the condition. Women can also be carriers鈥擠r. Montie is one鈥攂ut they usually only suffer minor muscle cramps.
鈥淲e want to move the field of research forward more quickly,鈥� said Dr. Montie. 鈥淲e can do this by developing this model, sharing it with other researchers and encouraging collaboration, with the ultimate goal of developing an effective therapeutic for men with Kennedy鈥檚 Disease.鈥�
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