Study identifies specific bacteria which precede autoimmune diabetes
A study led by Matej Oresic from VTT Technical Research Centre of Finland suggests that autoimmune diabetes is preceded by diminished gut microbial diversity of the Clostridium leptum subgroup, elevated plasma leptin and enhanced glucose-stimulated insulin secretion.
In collaboration with the DIPP - Finnish Type 1 Diabetes and Prediction study, VTT researches have previously found that specific metabolic disturbances precede early β-cell autoimmunity markers in children who subsequently progress to type 1 diabetes. However, the question remained what are the environmental causes and tissue-specific mechanisms leading to these disturbances?
Matej Oreič from VTT Technical Research Centre of Finland and collaborators Eriika Savontaus from the University of Turku, Samuel Kaski from Aalto University and Mikael Knip from the University of Helsinki set out to address this question, and the results were published on October 27, 2011 in PLoS Computational Biology journal.
The team carried out a study using non-obese diabetic (NOD) mice that recapitulated the protocol used in the DIPP clinical study, followed up by independent studies in which NOD mice were studied in relation to the risk of diabetes progression. Researchers found that young female NOD mice that later progress to autoimmune diabetes exhibit the same metabolic pattern as prediabetic children. These metabolic changes are accompanied by enhanced glucose-stimulated insulin secretion, upregulation of insulinotropic amino acids in islets, elevated plasma leptin and adiponectin, and diminished gut microbial diversity of the Clostridium leptum subgroup.
The elucidation of early metabolic pathways associated with progression to Type 1 diabetes points to novel avenues for early disease prevention. The ongoing efforts of VTT researchers are focused on the potential of specific bacteria from the C. leptum subgroup to help prevent Type 1 diabetes.
This study was supported by the Finnish Funding Agency for Technology and Innovation Tekes, the Seventh Framework Program of the European Community, and Juvenile Diabetes Research Foundation.
The environmental factors and molecular mechanisms leading to Type 1 diabetes are poorly understood and of great public health interest. The incidence of inflammatory and autoimmune diseases is rising faster than for any other major disease, and these diseases are affecting a wide spectrum of the population. The number of new cases of Type 1 diabetes in European children less than 5 years of age is expected to double between 2005 and 2020.
More information: M. Sysi-Aho, A. Ermolov, P. V. Gopalacharyulu, A. Tripathi, T. Seppänen-Laakso, J. Maukonen, I. Mattila, S. T. Ruohonen, L. Vähätalo, L. Yetukuri, T. Härkönen, E. Lindfors, J. Nikkilä, J. Ilonen, O. Simell, M. Saarela, M. Knip, S. Kaski, E. Savontaus, M. Oreič,
Metabolic regulation in progression to autoimmune diabetes, PLoS Comp. Biol. 7 (10), e1002257 (2011). www.ploscompbiol.o… pcbi.1002257
Provided by VTT Technical Research Centre of Finland
- New scientific knowledge on juvenile diabetes Dec 17, 2008 | not rated yet | 0
- Early research shows dietary supplement may lower risk of developing type 2 diabetes Sep 22, 2011 | not rated yet | 0
- Glucosamine-like supplement inhibits multiple sclerosis, type 1 diabetes May 14, 2007 | not rated yet | 0
- Type 1 diabetes triggered by 'lazy' regulatory T-cells Jan 14, 2008 | not rated yet | 0
- Overweight siblings of children with type 2 diabetes likely to have abnormal blood sugar levels Dec 09, 2008 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
Classical and Quantum Mechanics via Lie algebras
Apr 15, 2011 I'd like to open a discussion thread for version 2 of the draft of my book ''Classical and Quantum Mechanics via Lie algebras'', available online at http://lanl.arxiv.org/abs/0810.1019 , and for the...
- More from Physics Forums - Independent Research
More news stories
(AP)—Government health officials are investigating several health problems reported with potentially contaminated medications made by a Tennessee specialty pharmacy.
Diseases, Conditions, Syndromes 6 hours ago | not rated yet | 0
(HealthDay)—Comorbid conditions often accompany alopecia areata, according to a study published online May 22 in JAMA Dermatology.
Diseases, Conditions, Syndromes 7 hours ago | not rated yet | 0
(HealthDay)—As a world-class golfer, Stacy Lewis' accomplishments are remarkable. But it was a physical challenge in her childhood that defined her ascent to the top of her sport.
Diseases, Conditions, Syndromes 8 hours ago | not rated yet | 0
Saudi Arabia said Friday it would send samples taken from animals possibly infected with a deadly SARS-like virus to the United States for testing in a bid to find the source of disease.
Diseases, Conditions, Syndromes 11 hours ago | not rated yet | 0
The World Health Organization voiced deep concern Thursday over the SARS-like virus that has killed 22 people in less than a year, saying it might potentially spread more widely between humans.
Diseases, Conditions, Syndromes 15 hours ago | 5 / 5 (1) | 0
Two mutations central to the development of infantile myofibromatosis (IM)—a disorder characterized by multiple tumors involving the skin, bone, and soft tissue—may provide new therapeutic targets, according to researchers ...
6 hours ago | 5 / 5 (1) | 0 |
(Medical Xpress)—A new study by researchers in the US has shown that an ancient virus can be modified to help in the fight against the simian immunodeficiency virus SIV, which is the equivalent in monkeys ...
12 hours ago | 5 / 5 (3) | 0 |
Women at a particular stage in their monthly menstrual cycle may be more vulnerable to some of the psychological side-effects associated with stressful experiences, according to a study from UCL.
9 hours ago | 5 / 5 (2) | 0 |
Biological processes are generally based on events at the molecular and cellular level. To understand what happens in the course of infections, diseases or normal bodily functions, scientists would need to ...
9 hours ago | 5 / 5 (2) | 0 |
Talking on a hands-free device while behind the wheel can lead to a sharp increase in errors that could imperil other drivers on the road, according to new research from the University of Alberta.
6 hours ago | not rated yet | 0
Kate O'Reilly's spring allergy survival kit includes the usual stuff - nasal sprays, allergy pills and a box of tissues. This season, she's added a new weapon to her line of defense: an app on her smartphone.
7 hours ago | not rated yet | 0