Significance of peripheral mononuclear cells producing interferon- γ in response to insulin B:9-23-related peptides in subtypes of type 1 diabetes.

This study aimed to investigate the PBMC frequencies in subtypes of type 1 diabetes using enzyme-linked immunospot assay. In this cross-sectional study, peripheral blood samples were obtained from 148 participants including 72 with acute-onset type 1 diabetes (AT1D), 51 with slowly progressive insulin-dependent diabetes mellitus (SPIDDM), and 25 with type 2 diabetes. The frequency of B:9-23rPep-specific IFN-γ-producing PBMCs was significantly higher in AT1D participants than in SPIDDM and type 2 diabetes participants. Meanwhile, a significant inverse correlation was observed between the PMBC frequencies and insulin secretion capacity in SPIDDM participants. These findings suggest that the increased peripheral B:9-23rPep-specific IFN-γ immunoreactivity reflects decreased functional β-cell mass and greater disease activity of type 1 diabetes. PMID: 31525445 [PubMed - as supplied by publisher]
Source: Clinical Immunology - Category: Allergy & Immunology Authors: Tags: Clin Immunol Source Type: research