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- Martinell, Mats, 1971-, et al.
(författare)
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Characterization of Cellular Immunology in LADA Patients
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Objective: Patients with latent autoimmune diabetes mellitus in adults (LADA) have antibodies against the insulin-producing b-cells but at disease onset they are not insulin-dependent. This study presents cellular immunological differences between LADA, type 1, type 2 diabetes and healthy controls.Research Design and Methods: All patients and matched (by age, gender and body mass index) healthy controls were recruited from the County of Uppsala, Sweden. Peripheral blood mononuclear cells were isolated from freshly collected blood to determine proportions of innate, adaptive and regulatory immune cells by using flow cytometry. Results: Included were 14 patients with LADA, 16 with type 1 diabetes, 16 with type 2 diabetes and 13 healthy controls. The proportion of CD11c+CD123- antigen presenting cells (APCs) was lower, whilst proportions of CD11c+CD123+ APCs and Interleukin (IL)-35+ tolerogenic APCs were higher in LADA patients compared to patients with type 1 diabetes. The proportion of CD3-CD56highCD16+ Natural Killer (NK) cells was higher in LADA patients than in both healthy controls and type 2 diabetes patients. IL-35+ Treg cell numbers were similar to those observed in both type 1 diabetes and type 2 diabetes patients, but a lower frequency of IL-35+ regulatory T (Treg) cells was observed in LADA patients than in healthy controls. The proportion of regulatory B (Breg) cells in LADA patients was higher than in healthy controls, type 1 and type 2 diabetes patients and IL-35+ Breg cell numbers were higher than in type 1 diabetes patients. Conclusions: LADA patients present a mixed cellular immunological pattern compared to type 1 and type 2 diabetes patients. Numbers of APCs, IL-35+ tolerogenic APCs and IL-35+ Breg cells in LADA patients are similar to those observed in type 2 diabetes patients, whereas the changes in NK cells are similar to those observed in type 1 diabetes patients.
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| 2. |
- Singh, Kailash, et al.
(författare)
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Cellular immunological changes in patients with LADA are a mixture of those seen in patients with type 1 and type 2 diabetes
- 2019
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Ingår i: Clinical and Experimental Immunology. - : Oxford University Press (OUP). - 0009-9104 .- 1365-2249. ; 197:1, s. 64-73
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Tidskriftsartikel (refereegranskat)abstract
- There is currently scarce knowledge of the immunological profile of patients with latent autoimmune diabetes mellitus in the adult (LADA) when compared with healthy controls (HC) and patients with classical type 1 diabetes (T1D) and type 2 diabetes (T2D). The objective of this study was to investigate the cellular immunological profile of LADA patients and compare to HC and patients with T1D and T2D. All patients and age-matched HC were recruited from Uppsala County. Peripheral blood mononuclear cells were isolated from freshly collected blood to determine the proportions of immune cells by flow cytometry. Plasma concentrations of the cytokine interleukin (IL)-35 were measured by enzyme-linked immunosorbent assay (ELISA). The proportion of CD11c(+)CD123(-) antigen-presenting cells (APCs) was lower, while the proportions of CD11c(+)CD123(+) APCs and IL-35(+) tolerogenic APCs were higher in LADA patients than in T1D patients. The proportion of CD3(-)CD56(high)CD16(+) natural killer (NK) cells was higher in LADA patients than in both HC and T2D patients. The frequency of IL-35(+) regulatory T cells and plasma IL-35 concentrations in LADA patients were similar to those in T1D and T2D patients, but lower than in HC. The proportion of regulatory B cells in LADA patients was higher than in healthy controls, T1D and T2D patients, and the frequency of IL-35(+) regulatory B cells was higher than in T1D patients. LADA presents a mixed cellular immunological pattern with features overlapping with both T1D and T2D.
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