Circulating Leukocyte Alterations and the Development/Progression of Diabetic Retinopathy in Type 1 Diabetic Patients-A Pilot Study

被引:24
|
作者
Obasanmi, Gideon [1 ]
Lois, Noemi [1 ]
Armstrong, David [1 ]
Lavery, Nuala-Jane [1 ]
Hombrebueno, Jose Romero [1 ]
Lynch, Aisling [1 ]
Wright, David M. [2 ]
Chen, Mei [1 ]
Xu, Heping [1 ]
机构
[1] Queens Univ Belfast, Wellcome Wolfson Inst Expt Med, Sch Med Dent & Biomed Sci, Belfast, Antrim, North Ireland
[2] Queens Univ Belfast, Ctr Publ Hlth, Sch Med Dent & Biomed Sci, Belfast, Antrim, North Ireland
关键词
Type; 1; diabetes; diabetic retinopathy; neutrophils; lymphocytes; flow cytometry; INFLAMMATION; NEUTROPHILS; ACTIVATION; EXPRESSION; ADHESION; CEACAM1; INJURY; CD157;
D O I
10.1080/02713683.2020.1718165
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Background/Aims: The aim of this study was to investigate the relationship between alterations in circulating leukocytes and the initiation and progression of DR in people with type 1 diabetes (T1D). Methods: Forty-one patients with T1D [13 mild non-proliferative DR (mNPDR), 14 active proliferative DR (aPDR) and 14 inactive PDR (iPDR)], and 13 age- and gender-matched healthy controls were recruited prospectively. Circulating leukocytes, including CD4(+) and CD8(+) T-cells, CD14(+)CD16(-), CD14(-)CD16(+) and CD14(+)CD16(+) monocytes; CD16(+)HLA-DR- neutrophils, CD19(+) B-cells and CD56(+) natural killer cells and their cell surface adhesion molecules and chemokine receptors (HLA-DR, CD62L, CCR2, CCR5, CD66a, CD157 and CD305) were examined by flow cytometry. Results: In DR patients, compared to healthy controls, increased proportions of neutrophils (p = .0152); reduced proportions of lymphocytes (p = .0002), HLA-DR+ leukocytes (p = .0406) and non-classical monocytes (p = .0204); and reduced expression of CD66a (p = .0048) and CD157 (p = .0007) on CD4(+) T cells were observed. Compared to healthy controls, CD19(+) B cells were reduced at the mNPDR but not aPDR patients. Total lymphocytes, CD4(+) T cells and CD8(+) T cells progressively decreased whereas neutrophils, the neutrophil/lymphocyte ratio and the neutrophil/CD4(+) ratio progressively increased from early to late stages of DR, reaching statistical significance at the aPDR stage. Longer diabetes duration was associated with a reduced proportion of CD8(+) T cells (p = .002) and increased neutrophil/CD8(+) ratio (p = .033). Conclusions: In this pilot study, DR is associated with increased innate cellular immunity especially neutrophils and reduced adaptive cellular immunity particularly lymphocytes. Impaired B-cell immunity may play a role in the initiation of DR; whereas impaired T-cell immunity with increased neutrophil response may contribute to progression of DR from non-proliferative to proliferative stages in T1D patients. Large multicenter studies are needed to further understand the immune dysregulation in DR initiation and progression.
引用
收藏
页码:1144 / 1154
页数:11
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