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Year : 2018  |  Volume : 14  |  Issue : 54  |  Page : 167-173

The effects of hesperidin and quercetin on serum tumor necrosis factor-alpha and interleukin-6 levels in streptozotocin-induced diabetes model

1 Department of Nutrition and Dietetics, Faculty of Health Sciences, Artvin Coruh University, Artvin 08000, Turkey
2 Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Teknik University, Trabzon 61000, Turkey
3 Department of Medical Biochemistry, Hopa Government Hospital, Artvin 08000, Turkey
4 Department of Nursing, Faculty of Health Sciences, Artvin Coruh University, Artvin 08000, Turkey
5 Department of Histology and Embryology, Faculty of Veterinary, Ataturk University, Erzurum 25000, Turkey
6 Department of Physiology, Faculty of Medical School, Recep Tayyip Erdogan University, Rize 53000, Turkey

Correspondence Address:
Hatice Iskender
Department of Nutrition and Dietetics, Faculty of Health Sciences, Artvin Coruh University, Artvin 08000
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/pm.pm_41_17

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Background: Diabetes mellitus (DM) is a metabolic disorder that occurs as a result of absolute or relative insufficiency of insulin release and/or insulin effect due to impairment of carbohydrate, fat and protein metabolism, and it is characterized by hyperglycemia and leads to various complications. Objective: In this study, it was aimed to investigate the effects of hesperidin (HP) and quercetin, which are natural flavonoids, on serum malondialdehyde (MDA), glutathione (GSH), tumor necrosis factor alpha (TNF-α), and interleukin-6 (IL-6) levels in rats with streptozotocin (STZ)-induced diabetes. Materials and Methods: The experimental animals were divided into four groups, each group comprising ten rats designated as follows: Group 1 served as control rats (C); Group 2 served as diabetic rats (DM); Group 3 served as diabetic rats administered HP (DM + HP) (100 mg/kg b. w.); and Group 4 served as diabetic rats administered quercetin (DM + Q) (100 mg/kg b. w.). Results: Serum MDA and GSH levels were significantly higher in STZ-induced DM group than control group (P < 0.05). In DM + HP and DM + Q groups, MDA levels were significantly decreased compared to DM groups (P < 0.05), but there was no significant difference GSH levels between DM, DM + HP, and DM + Q groups (P > 0.05). TNF-α levels in STZ-induced DM group were significantly decreased compared to control group (P < 0.05), and groups of DM + HP and DM + Q had higher serum TNF-α levels than STZ-induced DM group (P < 0.05). In STZ-induced DM group, serum IL-6 levels were decreased compared to control group (P < 0.05). Conclusion: As a result, in this study, we determined that HP and quercetin may play an effective role in regulating insulin metabolism metabolism in diabetes. However, considering the incompatibility of various results in the literature as well as our own results, we think that the actual role of cytokines in the pathogenesis of diabetes is one of the issues that need to be clarified in further studies. Abbreviations used: DM: Diabetes mellitus, MDA: Malondialdehyde, GSH: Glutathione; IL-6: Interleukin-6, TNF-α: Tumor necrosis factor alpha, HP: Hesperidin, Q; Quercetin, STZ: Streptozotocin, TC: Total cholesterol, TG: Triglyceride, HDL-C: High density lipoprotein cholesterol, LDL-C: Low density lipoprotein cholesterol, VLDL-C: Very-low-density lipoprotein cholesterol.

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