Type 1 Diabetes and the Gut Microbiome: What We Know and What the Future Holds

Type 1 Diabetes and the Gut Microbiome: What We Know and What the Future Holds Angela Chen, OMS-II, Dr. Kiran C. Patel College of Osteopathic Medicine Objective. This paper explores the current understanding of the relationship between type 1 diabetes (T1D) and the gut microbiome, focusing on how the gastrointestinal microbial communities may contribute to autoimmune responses associated with T1D. Background. While the exact etiology of T1D remains unclear, it is widely recognized that its development results from a complex interplay of genetic predisposition, environmental factors, and lifestyle choices. Recent research has highlighted the significant role of the gut microbiome in T1D pathogenesis, suggesting interactions between microbial communities and environmental triggers that may influence disease onset. Methods. A preliminary search was conducted to identify relevant articles using PubMed and Google Scholar with keywords. An initial screening was performed to assess the relevance and quality of the identified studies then, a full-text review to extract and organize data for further analysis and presentation of findings. Results. Certain species of microbiota in the gut may protect against islet cell autoimmunity, particularly in the large intestine's mucus layer. In children it has been shown that IA-positive children or those diagnosed with T1D had reduced anti-inflammatory flora (Roseburia and Bifidobacterium) and an increase ingut permeability. In adults with T1D, there is a increase in opportunistic bacteria (Eubacterium siraeum and Clostridiales) while there’s a depletion of beneficial microbes (Firmicutes). Conclusion. Although preliminary research has shown that gut dysbiosis is linked to T1D, establishing definitive causality remains challenging.