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Effect of Royal Jelly on Blood Glucose and Lipids in Streptozotocin Induced Type 1 Diabetic Rats
Mojtaba Asgari, Masoumeh Asle-Rousta, Mohammad Sofiabadi,
Volume 20, Issue 5 (8-2017)
Abstract

Abstract

Background: Diabetes is the most common endocrine disorder that leads to hyperglycemia and hyperlipidemia. Royal jelly is as a bee-collected natural product has diverse biological properties and that is rich in natural antioxidants. The aim of this study was to investigate the effects of royal jelly on serum glucose and lipids profile in streptozotocin induced type 1 diabetic rats.

Materials and Methods: In this experimental study, 40male Wistar rats were divided into 5 groups(8 in each): control, diabetic rats, Glibenclamide, and two groups of royal jelly- treated diabetic. Diabetes was induced in the rats by injection of streptozotocin (60 mg/kg b.w) intraperitoneally. The royal jelly was gavaged at doses of 100 and 200 mg/kg after streptozotocin injection for30 days. At the end of this period, levels of glucose, cholesterol, triglyceride, LDL and HDL in serum were measured.

Results: Royal jelly and Glibenclamide significantly decreased the levels of glucose, cholesterol, triglyceride and LDL in diabetic rats (p<0.01). In addition, significant increase (p<0.01) in HDL level was observed in royal jelly-treating rats in comparison to the diabetic rats.

Conclusion: The results indicated that royal jelly may be used effectively in controlling and attenuating the complications of diabetes. The hypoglycemic and hypolipidemic effects of royal jelly may be due to the presence of antioxidants.


Effect of Myrtus Communis Hydro-Alcoholic Extract on Chronic Restraint Stress-Induced Spatial Memory Deficit in Adult Male Rats
Fatemeh Jalalvand, Masoumeh Asle-Rousta,
Volume 21, Issue 3 (6-2018)
Abstract
Background and Aim: Chronic restraint stress impairs spatial learning and memory. Myrtle (Myrtus communis) has antioxidant, antidiabetic, hepatoprotective and neuroprotective properties. The aim of this study was to investigate the effect of myrtle hydroalcoholic extract on chronic restraint stress-induced spatial learning and memory deficit in adult male Wistar rats.
Materials and Methods: In this experimental study, 80 adult male Wistar rats were allocated to eight groups (10 in each) included control group (intact), myrtle0.75, myrtle1.5, myrtle3 groups (were gavaged with hydroalcoholic extract of myrtle at 0.75, 1.5 and 3 mg/ kg bw doses), stress group (restrained in restrainers for 6 hours per day for 21 consecutive days), stress- myrtle0.75, stress-myrtle1.5 and stress- myrtle3 groups (received myrtle extract at 0.75, 1.5 and 3 mg/ kg bw doses and exposed to chronic immobility stress). Spatial learning and memory were examined through the Morris water maze test.
Findings: Chronic immobilization stress caused spatial learning and memory impairment. Consuming doses 1.5 and 3 of Myrtle extract to stressed animals caused significant decrease in spent time and swam distance to reach the hidden platform (p<0.05) and increased time lapsed in target quadrant comparing with stress group (p<0.05).
Conclusion: It has been concluded that myrtle extract can improve spatial learning and memory in rats exposed to stress in a dose dependent manner.

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