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Scientists isolate protective proteins that influence outcomes for type 2 diabetes

September 09, 2019

Scientists from the School of Medicine, Trinity College Dublin, have, for the first time, discovered a family of proteins that are associated with lower blood sugar levels among obese patients with type 2 diabetes.

Their research is published today (Monday, September 9th, 2019) in the international journal Nature Communications here: https://rdcu.be/bQlWW. The study showed that patients with type 2 diabetes who have high levels of the protein, IL-36 cytokines, were found to have lower blood sugar levels, implying that those proteins are associated with better control of the patient's blood sugar levels and their disease.

IL-36 cytokines are members of a larger family of proteins known as the interleukin-1 family which have emerged as central players in the development of obesity related disease.

Researchers have linked the protective effects of these proteins with their ability to alter the make-up of the intestinal microbiome.

Obesity causes an increased level of fatty acids and inflammation leading to insulin resistance. When the body is resistant to the insulin it produces it causes a high build-up of glucose or blood sugar, ultimately leading to type 2 diabetes.

Obesity is now recognised as a global pandemic and has been definitively linked to a wide range of diseases including metabolic disorders such as diabetes, stroke and many types of cancer. The World Health Organisation state that global levels of obesity have more than doubled since 1980. In Ireland, according to the Healthy Ireland survey, 854,165 adults over 40 in the Republic of Ireland are at increased risk of developing (or have) type 2 diabetes. The economic burden of diabetes on the Irish health care system is becoming a major challenge for the government.

Given the scale and global reach of the problem, current approaches aimed at reversing the tide of obesity driven disease are insufficient. The Trinity research team believe that there is an urgent need to achieve a greater understanding of the mechanisms associated with obesity related diseases.

Lead scientist Dr Patrick Walsh from the School of Medicine, Trinity, said: "This study has added to a substantial body of work which has revealed the important function of the broader interleukin-1 family as mediators of metabolic health and disease. Our findings have opened the door to a deeper investigation of how IL-36 cytokines impact on the development of such diseases in humans and whether this can be exploited for the better treatment of patients."
-end-
The study was led by scientists from the Department of Clinical Medicine, at the School of Medicine, Trinity, in collaboration with the team of Dr Andy Hogan and Professor Donal O'Shea (NUIM, UCD). The study was funded by the Health Research Board (HRB) and the National Children's Research Centre (NCRC).

Trinity College Dublin

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