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Pubmed ID :29408756
Publication Date : //

Plasma metabolic profile reveals PGF2α protecting against non-proliferative diabetic retinopathy in patients with type 2 diabetes.


Diabetic retinopathy (DR) is the most frequent microvascular complications of diabetes and the leading cause of blindness in adults worldwide. Non-proliferative DR (NPDR) is the first stage of DR but currently has few recommended intervention. Eicosanoids play important roles in maintaining vessel homeostasis. However, the functions of eicosanoids in NPDR are still unknown. In this study, we investigated the eicosanoids profile difference in plasma between type 2 diabetes with NPDR or not. A total of 50 patients with type 2 diabetes were recruited and divided into non-DR (NDR) group and NPDR group based on fundus photographs. The eicosanoids profiles in plasma were determined by LC-MS/MS. Adhesion and transwell assay were used to detect the adhesion and migration effects of metabolites on primary bovine retinal pericyte cells (BRPC), respectively. Streptomycin (STZ)-induced diabetic mouse model was used to test the protective effects of selected metabolites according to retinal immunofluorescence staining and fluorescence confocal microscopy. Prostaglandin 2α (PGF2α) was decreased significantly in NPDR group compared to NDR group and negatively correlated with NPDR. In vitro, PGF2α was found to accelerate adhesion and migration by activating prostaglandin F receptor (FP receptor) and subsequent increasing RhoA activity in primary bovine retinal pericyte. Administration of PGF2α analogue diminished the damage on retinal capillary in an STZ-induced diabetic mouse model. Our results suggested that PGF2α may be a protective factor in the progression of NPDR in T2D patients. The protective mechanism of PGF2α was to increase pericyte mobility through FP receptor/RhoA pathway.

Authors : Peng Liyuan , Sun Bei , Liu Mingming , Huang Jing , Liu Yajin , Xie Zipeng , He Jinlong , Chen Liming , Wang Daowen , Zhu Yi , Zhang Xu , Ai Ding ,

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