Indian Journal of Medical Research

ORIGINAL ARTICLE
Year
: 2017  |  Volume : 145  |  Issue : 6  |  Page : 767--776

Peripheral blood mononuclear cells of patients with latent autoimmune diabetes secrete higher levels of pro- & anti-inflammatory cytokines compared to those with type-1 diabetes mellitus following in vitro stimulation with β-cell autoantigens


Darshan Badal1, Rajendra Kumar2, Mahinder Paul1, Devi Dayal3, Anil Bhansali1, Sanjay Kumar Bhadada1, Rajesh Kumar4, Naresh Sachdeva1 
1 Department of Endocrinology, Postgraduate Institute of Medical Education & Research, Chandigarh, India
2 University Institute of Pharmaceutical Sciences (UIPS), Chandigarh, India
3 Department of Pediatrics, Postgraduate Institute of Medical Education & Research, Chandigarh, India
4 Department of Statistics, Panjab University, Chandigarh, India

Correspondence Address:
Naresh Sachdeva
Department of Endocrinology, Postgraduate Institute of Medical Education & Research, Chandigarh 160 012
India

Background & objectives: Type-1 diabetes mellitus (T1DM) and latent autoimmune diabetes in adults (LADA) share similar pathological features but differ in age of onset and progression. There is a scarcity of information on differences in CD4+ T-cell responses, particularly, cytokine secretion, between the two forms of autoimmune diabetes. Here proliferative potential and concentration of pro- and anti-inflammatory cytokines secreted by peripheral blood mononuclear cells (PBMCs) of T1DM and LADA patients were compared, after in vitro stimulation with β-cell autoantigens. Methods: A total of 19 patients with LADA, 37 with T1DM and 20 healthy controls were compared on the basis of lymphocyte proliferation and secretion of pro- and anti-inflammatory cytokines belonging to different T-helper types after in vitro stimulation of PBMCs with insulin and glutamic acid decarboxylase 65 (GAD65). Results: Following insulin stimulation, LADA group secreted higher concentration of interleukin-17 (IL-17) (P=0.02) and had higher proportion of interferon gamma (IFN-γ) secretors (P<0.001) than T1DM group. Post-GAD65 stimulation, higher proportion of LADA patients secreted IL-23 than T1DM group (P=0.02). Proportion of responders , as well as levels of secreted IL-10, were significantly higher in LADA than T1DM group, following stimulation with both insulin (P=0.01) and GAD65 (P=0.03). A significant positive correlation was observed between body mass index and IL-17 levels (r=0.41, P=0.04) and fasting plasma C-peptide with IL-10 levels (r=0.37, P=0.04). Interpretation & conclusions: There are differences in the portfolio of cytokine secretion in diabetic subjects with varying rates of β-cell destruction as LADA subjects secrete higher levels of both pro- and anti-inflammatory cytokines on exposure to β-cell autoantigens, thus highlighting another distinguishing feature in the pathophysiology of the two forms of autoimmune diabetes.


How to cite this article:
Badal D, Kumar R, Paul M, Dayal D, Bhansali A, Bhadada SK, Kumar R, Sachdeva N. Peripheral blood mononuclear cells of patients with latent autoimmune diabetes secrete higher levels of pro- & anti-inflammatory cytokines compared to those with type-1 diabetes mellitus following in vitro stimulation with β-cell autoantigens.Indian J Med Res 2017;145:767-776


How to cite this URL:
Badal D, Kumar R, Paul M, Dayal D, Bhansali A, Bhadada SK, Kumar R, Sachdeva N. Peripheral blood mononuclear cells of patients with latent autoimmune diabetes secrete higher levels of pro- & anti-inflammatory cytokines compared to those with type-1 diabetes mellitus following in vitro stimulation with β-cell autoantigens. Indian J Med Res [serial online] 2017 [cited 2021 Apr 21 ];145:767-776
Available from: https://www.ijmr.org.in/article.asp?issn=0971-5916;year=2017;volume=145;issue=6;spage=767;epage=776;aulast=Badal;type=0