Researchers Uncover Early Biological Sign of Type 1 Diabetes Progression

Gainesville: Researchers at the University of Florida's Diabetes Institute have identified an early biological sign that signals the development of Type 1 diabetes, according to a study published in the journal Diabetes. According to Emirates News Agency, the study found that the smallest collections of insulin-producing beta cells, as well as single cells scattered throughout the pancreas, are the first to die as the immune system launches its assault. This appears to occur even before someone with diabetes exhibits symptoms. The loss of these cells seems to be a precursor to the next phase of Type 1 diabetes, where the immune system begins to destroy larger and more significant collections of insulin-producing cells in the pancreas, known as the islets of Langerhans. 'We did not expect that,' said the study's senior author, Clive H. Wasserfall, Ph.D., a researcher at the UF Diabetes Institute. 'And we can only speculate as to why that would be. This leads to a place where, if we can save these remaining b igger islets of Langerhans, perhaps one day we could prevent or delay the disease from happening.' Wasserfall highlighted that understanding the disease's progression provides a foundation for strategies to combat the disorder, even as a cure remains a distant hope. The finding might also one day assist doctors in detecting Type 1 diabetes earlier, allowing for quicker intervention to slow its progression. The study initially aimed to determine if the islets are closer together in smaller pancreases, according to Wasserfall, an assistant professor in the UF College of Medicine's Department of Pathology, Immunology and Laboratory Medicine. However, it was found that they are not. Utilizing advanced imaging and computer analysis, the team examined slides of pancreatic tissue from the UF Health-based Network for Pancreatic Organ donors with Diabetes, or nPOD, the largest biorepository of pancreatic tissue used for Type 1 diabetes research. The study revealed that smaller insulin-producing clusters vanished ea rly in the disease process, while larger islets remained mostly intact in samples from individuals with early-stage disease. Wasserfall noted that not all islets disappear at the same rate, with smaller ones tending to vanish first. This finding could help explain why Type 1 diabetes progresses differently in children than in adults. Young children, whose pancreases naturally have more small islets, often lose insulin-producing ability rapidly after diagnosis, while older individuals may retain some insulin production for years.