Showing posts with label Melatonin. Show all posts
Showing posts with label Melatonin. Show all posts

Scientists provide first evidence that carbamates can upset circadian rhythms

 The current research focuses on two chemicals, carbaryl, the third most widely used insecticide in the U.S. but which is illegal in several countries, and carbofuran, the most toxic carbamate insecticide, which has been banned for applications on food crops for human consumption since 2009. It is still used in many countries, including Mexico and traces persist in food, plants and wildlife.
"We found that both insecticides are structurally similar to melatonin and that both showed affinity for the melatonin, MT2 receptors, that can potentially affect glucose homeostasis and insulin secretion," said Marina Popovska-Gorevski, co-author, now a scientist with Boehringer Ingelheim Pharmaceuticals, who worked in Dubocovich's lab while earning her master's degree at UB. "That means that exposure to them could put people at higher risk for diabetes and also affect sleeping patterns.""



Melatonin explains the mystery of seasonal multiple sclerosis flare-ups

Seasonal flare-ups in patients with multiple sclerosis are caused by plummeting levels of melatonin in the spring and summer, according to research published September 10 in Cell. The study reveals that relapses in patients with this autoimmune disorder are much less frequent in the fall and winter, when levels of the so-called darkness hormone are at their highest, but the reverse is true in the spring and summer seasons.

Moreover, treatment with melatonin improved clinical symptoms in a mouse model of multiple sclerosis by restoring a healthy balance of immune cells called T lymphocytes. The findings, which resulted from a collaboration between American and Argentinian scientists, could potentially lead to the development of novel treatments for a broad range of autoimmune disorders.