A body temperature sensor, TRPM2, promotes insulin secretion

Jan 04, 2011

The research group led by professor Makoto Tominaga and Dr. Kunitoshi Uchida, National institute for Physiological Sciences (NIPS), Japan, found TRPM2 ion channel in pancreatic beta-cells is important for insulin secretion stimulated by glucose and gastrointestinal hormone (incretin) secreted after food intake. Their finding was reported in Diabetes.

Diabetes mellitus is a disease caused by lack of insulin secretion from pancreatic cells, or less response to the secreted insulin, which raises the blood glucose levels, and as a result, causes serious disorders. It is said that at least 171 million people worldwide suffer from , and its incidence is increasing rapidly. Clarify the mechanisms of insulin secretion is important for the development of therapy. Here, this research group focused on TRPM2 acting as a body temperature sensor.

TRPM2 is a temperature-sensitive Ca2+-permeable channel and expressed in pancreatic beta-cells. They found that TRPM2-deficient mice have shown the higher blood glucose levels with impaired insulin secretion compared with wild-type mice. Furthermore, TRPM2-deficient pancreatic beta-cells showed smaller intracellular Ca2+ increase and lesser insulin secretion stimulated by glucose and incretin.

Professor Makoto Tominaga and Dr. Kunitoshi Uchida said, "TRPM2 may control levels mainly by modulating intracellular Ca2+ concentrations. Finding the substance which stimulates TRPM2 effectively could lead to the development of a new therapy for diabetes mellitus."

Explore further: Unprecedented germ diversity found in remote Amazonian tribe

Related Stories

Fat cells send message that aids insulin secretion

Nov 06, 2007

The body's fat cells help the pancreas do its job of secreting insulin, according to research at Washington University School of Medicine in St. Louis. This previously unrecognized process ultimately could lead to new methods ...

Study pinpoints role of insulin on glucagon levels

Apr 07, 2009

April 7, 2009 - Researchers at the Joslin Diabetes Center have shown for the first time that insulin plays a key role in suppressing levels of glucagon, a hormone involved in carbohydrate metabolism and regulating blood glucose ...

Recommended for you

Bacteria play only a minor role stomach ulcers in cattle

Apr 17, 2015

Scientists at the University of Veterinary Medicine Vienna investigated whether stomach ulcers in cattle are related to the presence of certain bacteria. For their study, they analysed bacteria present in ...

New research reveals how our skeleton is a lot like our brain

Apr 17, 2015

Researchers from Monash University and St Vincent's Institute of Medical Research in Melbourne have used mathematical modelling combined with advanced imaging technology to calculate, for the first time, the number and connectivity ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.