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Cell Journal [Yakhteh]. 2018; 19 (4): 520-527
in English | IMEMR | ID: emr-189841

ABSTRACT

Objective: reactive oxygen species [ROS] is an apoptosis inducer in pancreatic beta-cells that stimulates p53/p65 mediated microRNA [miR]-145 expression. Punica granatum L. [pomegranate] is an antioxidant fruit that attenuates ROS generation. This study examines the effects of pomegranate fruit aqueous extract [PGE] on the levels of ROS, p53, p65, miR-145, and its target insulin receptor substrate 1 [irs-1] mRNA in Alloxan-diabetic male Wistar rats


Materials and Methods: in this experimental study, diabetic rats received different doses of PGE. The effects of the PGE polyphenols were examined through a long-term PGE treatment period model, followed by an evaluation of the plasma and tissue contents of free fatty acids [FFAs], triglycerides [TG], and glycogen compared with diabetic controls [DC] and normal controls [NC]. We used real-time polymerase chain reaction [PCR] to investigate the modulation of p53, p65, miR-145, and irs-1 expression levels


Results: there was a noticeable reduction in fasting blood glucose [FBG] and ROS generation compared to DC. We observed marked decreases in p53, p65, miR-145 expression levels followed by an elevated level of irs-1, which contributed to improvement in insulin sensitivity


Conclusion: PGE administration downregulated miR-145 levels in Alloxan-diabetic Wistar rats by suppression of ROS-mediated p53 and p65 overexpression

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