Format

Send to

Choose Destination
Iran J Basic Med Sci. 2017 Apr;20(4):423-429. doi: 10.22038/IJBMS.2017.8585.

Effect of genistein on expression of pancreatic SIRT1, inflammatory cytokines and histological changes in ovariectomized diabetic rat.

Author information

1
Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
2
Department of Histology & Embryology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
3
Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.

Abstract

OBJECTIVES:

Genistein is reported to have anti-diabetic and anti-inflammatory functions, in particular, direct effects on β-cell proliferation and insulin secretion. In this study, we investigated the anti-inflammatory effect of genistein on the pancreatic β-cells in ovariectomized diabetic rat.

MATERIALS AND METHODS:

Forty female rats were divided into four groups: sham, bilateral ovariectomy (OVX), OVX.D (OVX+diabetes) and OVX.D.G (OVX.D+genistein). After bilateral ovariectomy, rats in the diabetic groups were fed high-fat diet (HFD), ad libitum for 4 weeks, and then a low dose of streptozotocin (STZ) (30 mg/kg) injected intraperitoneally. Genistein (1 mg/kg/day; SC) was administrated for 8 weeks. At the end of 8 weeks, pancreas tissue was removed and used for western blotting and Hematoxylin-Eosin staining.

RESULTS:

Treatment with genistein declined inflammation and tissue injury, and this decline was correlated with the expression of SIRT1. OVX and OVX.D significantly increased Nf-κB and IL-1β expression and decreased SIRT1 levels compared to sham group (P<0.05). Significant reduction of Nf-κB and IL-1β, and increasing of SIRT1 were observed during genistein treatment (P<0.05).

CONCLUSION:

Estrogen deficiency alone or with HFD increased pancreatic inflammation. However, subcutaneous administration of gtenistein prevented from these inflammatory changes in the pancreas of a surgery animal model of ovariectomy with or without diabetes. Our results support the potential preventing effect of genistein from pancreatic injury.

KEYWORDS:

Diabetes; Genistein; Inflammatory cytokines-ovariectomy; SIRT1

Supplemental Content

Full text links

Icon for PubMed Central
Loading ...
Support Center