Featured Research

from universities, journals, and other organizations

Too much glucosamine can cause the death of pancreatic cells, increase diabetes risk, researchers find

Date:
October 27, 2010
Source:
Université Laval
Summary:
High doses or prolonged use of glucosamine causes the death of pancreatic cells and could increase the risk of developing diabetes, according to a team of researchers in Canada.

High doses or prolonged use of glucosamine causes the death of pancreatic cells and could increase the risk of developing diabetes, according to a team of researchers at Université Laval's Faculty of Pharmacy. Details of this discovery were recently published on the website of the Journal of Endocrinology.

In vitro tests conducted by Professor Frédéric Picard and his team revealed that glucosamine exposure causes a significant increase in mortality in insulin-producing pancreatic cells, a phenomenon tied to the development of diabetes. Cell death rate increases with glucosamine dose and exposure time. "In our experiments, we used doses five to ten times higher than that recommended by most manufacturers, or 1,500 mg/day," stressed Professor Picard. "Previous studies showed that a significant proportion of glucosamine users up the dose hoping to increase the effects," he explained.

Picard and his team have shown that glucosamine triggers a mechanism intended to lower very high blood sugar levels. However, this reaction negatively affects SIRT1, a protein critical to cell survival. A high concentration of glucosamine diminishes the level of SIRT1, leading to cell death in the tissues where this protein is abundant, such as the pancreas.

Individuals who use large amounts of glucosamine, those who consume it for long periods, and those with little SIRT1 in their cells are therefore believed to be at greater risk of developing diabetes. In a number of mammal species, SIRT1 level diminishes with age. This phenomenon has not been shown in humans but if it were the case, the elderly -- who constitute the target market for glucosamine -- would be even more vulnerable.

"The key point of our work is that glucosamine can have effects that are far from harmless and should be used with great caution," concluded Professor Picard.

The results obtained by Picard and his team coincide with recent studies that cast serious doubt on the effectiveness of glucosamine in treating joint problems.

This study was co-authored by Mathieu Lafontaine-Lacasse and Geneviève Doré.


Story Source:

The above story is based on materials provided by Université Laval. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Lafontaine-Lacasse, G. Dore, F. Picard. Hexosamines stimulate apoptosis by altering Sirt1 action and levels in rodent pancreatic β-cells. Journal of Endocrinology, 2010; DOI: 10.1677/JOE-10-0243

Cite This Page:

Université Laval. "Too much glucosamine can cause the death of pancreatic cells, increase diabetes risk, researchers find." ScienceDaily. ScienceDaily, 27 October 2010. <www.sciencedaily.com/releases/2010/10/101027111349.htm>.
Université Laval. (2010, October 27). Too much glucosamine can cause the death of pancreatic cells, increase diabetes risk, researchers find. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2010/10/101027111349.htm
Université Laval. "Too much glucosamine can cause the death of pancreatic cells, increase diabetes risk, researchers find." ScienceDaily. www.sciencedaily.com/releases/2010/10/101027111349.htm (accessed July 30, 2014).

Share This




More Health & Medicine News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Generics Eat Into Pfizer's Sales

Generics Eat Into Pfizer's Sales

Reuters - Business Video Online (July 29, 2014) — Pfizer, the world's largest drug maker, cut full-year revenue forecasts because generics could cut into sales of its anti-arthritis drug, Celebrex. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Nigeria Ups Ebola Stakes on 1st Death

Nigeria Ups Ebola Stakes on 1st Death

Reuters - Business Video Online (July 29, 2014) — Nigerian authorities have shut and quarantined a Lagos hospital where a Liberian man died of the Ebola virus, the first recorded case of the highly-infectious disease in Africa's most populous economy. David Pollard reports Video provided by Reuters
Powered by NewsLook.com
Running 5 Minutes A Day Might Add Years To Your Life

Running 5 Minutes A Day Might Add Years To Your Life

Newsy (July 29, 2014) — According to a new study, just five minutes of running or jogging a day could add years to your life. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Poses Little Threat To U.S.: CDC

Ebola Outbreak Poses Little Threat To U.S.: CDC

Newsy (July 29, 2014) — The Ebola outbreak in West Africa poses little threat to Americans, according to officials with the Centers for Disease Control and Prevention. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins