Brain tumours and peripheral neuropathy

(Medical Xpress)—Researchers from Plymouth University Peninsula Schools of Medicine and Dentistry are part of an international team which has for the first time identified the role of a tumour suppressor in peripheral neuropathy in those suffering multiple tumours of the brain and nervous system.

One in 25,000 people worldwide is affected by neurofibromatosis type 2 (NF2), a condition where the loss of a tumour suppressor called Merlin results in multiple tumours in the brain and nervous system.

Sufferers may experience 20 to 30 tumours at any one time and such numbers often lead to hearing loss, disability and eventually death. Those with NF2 may also experience peripheral neuropathy, which is when the nerves carrying messages to and from the brain and spinal column to the rest of the body do not work.

Peripheral neuropathy leads to further complications for NF2 sufferers, such as pain and numbness, , problems with body organs and other symptoms of nerve damage, such as bladder problems, uncontrollable sweating and sexual dysfunction.

Researchers from Plymouth University Peninsula Schools of Medicine and Dentistry are part of an international research team which has for the first time identified the role of a called Merlin in regulating the integrity of axons. Axons are which transmit information around the body and it is these are that damaged in peripheral neuropathy.

The research team showed that Merlin regulates a protein called neurofilament which supplies structural support for the axon.

A better understanding of this mechanism could lead to effective drug therapies to alleviate the symptoms of in patients with NF2.

The results of the research is published this week in .

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