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Cellular Physiology and Biochemistry 2018

Expression of MicroRNA-448 and SIRT1 and Prognosis of Obese Type 2 Diabetic Mellitus Patients After Laparoscopic Bariatric Surgery.

Vetëm përdoruesit e regjistruar mund të përkthejnë artikuj
Identifikohuni Regjistrohu
Lidhja ruhet në kujtesën e fragmenteve
Yong Wang
Dong-Shu Wang
Yun-Sheng Cheng
Ben-Li Jia
Gang Yu
Xiao-Qiang Yin
Yang Wang

Fjalë kyçe

Abstrakt

OBJECTIVE

This study sought to investigate the expression and prognostic value of peripheral blood microRNA-448 (miR-448) and its target gene SIRT1 after laparoscopic bariatric surgery in obese type 2 diabetic mellitus (T2DM) patients.

METHODS

Obese T2DM patients were selected and treated with laparoscopic bariatric surgery. Enzyme-linked immunosorbent assay (ELISA) was used to measure SIRT1 protein expression. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) was employed to determine the mRNA expression of the related gene. Endothelial progenitor cells (EPCs) were grouped into blank, negative control (NC), miR-448 mimic, miR-448 inhibitor, siRNA-SIRT1 and miR-448 inhibitor + siRNA-SIRT1 groups. Transwell assays and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assays were applied to determine cell invasion and cell viability. A tube formation assay and an adherence test were utilized to assess the angiogenic and adhesive capacities of the cells.

RESULTS

In peripheral blood, the expression of miR-448 was reduced, whereas the mRNA and protein expression of SIRT1 was increased after surgery compared to before surgery. miR-448 expression was lower and mRNA and protein expression of SIRT1 was higher in the effective group than in the ineffective group after surgery. SIRT1 is a target gene of miR-448. miR-448 can suppress viability and invasion, and it reflects the angiogenic and adhesive capacity of EPCs and the protein expression of relative genes in EPCs through targeting SIRT1.

CONCLUSIONS

The results demonstrated that miR-448 and its target gene SIRT1 can serve as prognostic indicators for obese T2DM patients after laparoscopic bariatric surgery.

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