By IANS, Economic Times | 4 Nov, 2014, 04.16PM IST
“Essentially, the protective layer surrounding and insulating the normal nerves, called myelin, is missing or is defective on the nerves of the patients with migraine headaches,” said Bahman Guyuron from Case Western Reserve University, Cleveland.
“If the insulation becomes cracked or damaged by conditions in the environment, that is going to affect the cable’s ability to perform its normal function,” Guyuron pointed out.
“In a similar way, damage to the myelin sheath may make the nerves more prone to irritation by the dynamic structure surrounding them, such as muscle and blood vessels, potentially triggering migraine attacks,” he added.
The researchers performed in-depth studies on tiny specimens of the trigeminal nerve (one of the cranial nerves), from 15 patients who underwent surgical treatment for migraine.
Organisation of the cellular elements in nerve fibers also differed between groups.
Healthy nerves were tightly organised with elements uniformly distributed through the nerve, while nerves from migraine patients showed discontinuous, “patchy” distribution.