List of Articles Rat.

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  1 - Evaluation of metalloproteinases MMP2 and MMP9 expression in liver of male wistar rats exposure to Lead and N-acetylcysteine
  Najmeh Ranji Hadi Habibollahi Reihaneh Kochakinegad Eisa Vefghi Mohammad Mahdi Jafarzadeh
  Background & Aim: Matrix metalloproteinases (MMPs) as MMP2 and MMP9 degrade extracellular matrix. Lead (Pb) is a well-known environmental contaminant which could impair the activity of MMPs. The aim of this study was to investigate the effects of N-acetylcysteine, as an More

  Background & Aim: Matrix metalloproteinases (MMPs) as MMP2 and MMP9 degrade extracellular matrix. Lead (Pb) is a well-known environmental contaminant which could impair the activity of MMPs. The aim of this study was to investigate the effects of N-acetylcysteine, as an antioxidant, on the expression of MMP2 and MMP9 genes in the liver of rats exposed with Pb. Materials & Methods: In this study, the 30 male rats were randomly divided into five groups(n=6): 1) control, 2) acute dose of Pb (70 mg/kg), 3) acute dose of Pb (70 mg/kg) + continuous administration of NAC (50 mg/kg), 4) chronic dose of Pb (2 mg/kg), and 5) chronic dose of Pb (2 mg/kg) + continuous administration of NAC (50 mg/kg). Acute dose of Pb was administrated on the first day of study and chronic dose of Pb and Continuous administration of NAC was used every day for 4 weeks as gavage. Hematoxylin and eosin (H&E) staining was used to study histopathological changes. The expression of MMP2 and MMP9 genes was evaluated using Quantitative RT-PCR Results: In the liver of rats exposed with Lead (Pb) especially at chronic dose, was observed structural abnormality and increased inflammatory. Q-RT-PCR analysis showed the expression of MMP2a and MMP9 genes increased in Pb exposed liver and decreased in NAC administrated liver after Pb exposure. Conclusion: Our results suggest that NAC can protect the liver of rats through downregulation of metalloproteinases after Pb exposure and decrease inflammation and tissue damage. Manuscript profile
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  2 - protective effect of Naringenin (Citrus flavonone) on incipient diabetic nephropathy in the rats with alloxan-induced diabetes
  Yousef Doustar رامین Kaffash Elahi داریوش Mohajeri
  Diabetes mellitus is a metabolic abnormality that has a relatively high prevalence all over the world. Kidney failure is one of the main complications of diabetes. Many therapeutic methods have been introduced from all over the world to treat diabetes. The aim of the pr More

  Diabetes mellitus is a metabolic abnormality that has a relatively high prevalence all over the world. Kidney failure is one of the main complications of diabetes. Many therapeutic methods have been introduced from all over the world to treat diabetes. The aim of the present study was to assess the protective effect of Naringenin on early kidney injuries in alloxan-induced diabetic rats. Forty male Wistar rats were randomly allocated into 4 equal groups, including: healthy control, normal healthy receiving Naringenin, diabetic and diabetic receiving Naringenin. Diabetes was also induced by intraperitoneal injection of a single dose of naloxone (120 mg/kg). Naringenin treatment groups received the drug (50 mg/kg) daily for 3 weeks through the gavage. Finally, serum levels of kidney function markers including urea, uric acid and creatinine as well as amount of lipid peroxidation product (MDA) and activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX) and glutathione reductase (GR) were assessed in kidney hemogenates. Moreover, histopathological observation was assayed at the degree of renal injury. Significant differences among the groups were determined by one-way analysis of variance followed by Tukey post-test. Statistical significance was considered at p<0.05. In alloxanized diabetic rats, Naringenin significantly decreased the levels of serum urea, uric acid and creatinine (p<0.05), and significantly decreased the lipid peroxidation and elevated the levels of antioxidant enzymes in these rats (p<0.05). Histopathological changes were in agreement with biochemical findings. The results of the present study showed that naringenin with antioxidant properties can prevent early diabetic kidney damage. Manuscript profile
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  3 - Effect of Zataria multiflora Boiss. Extract against Carbon Tetrachloride – induced Liver Damage in Adult Male Wistar rats
  Zahra Taherkhani Akram Eidi Pejman Mortazavi
  Thyme (Zataria Multiflora Boiss), belonging to the family Labiatae, is native to Iran and is used traditionally in food, especially in yogurt flavoring, as a stimulant, seasoning, and carminative. Very high medicinal properties of this plant were reported, such as antio More

  Thyme (Zataria Multiflora Boiss), belonging to the family Labiatae, is native to Iran and is used traditionally in food, especially in yogurt flavoring, as a stimulant, seasoning, and carminative. Very high medicinal properties of this plant were reported, such as antioxidant, antimicrobial, analgesic, and anti-inflammatory activity. This research aimed to evaluate the protective effects of ethanolic extract of thyme against hepatic damage induced by carbon tetrachloride (CCl4) in adult male Wistar rats. 40 rats were randomly divided into 8 groups: group 1 as normal control, groups 2-4 only thyme extract (50, 100, 200 mg/kg, gavage), group 5 (liver damage) receiving CCl4 (5/ 0 ml/kg, intraperitoneally, twice a week) for 8 weeks and groups of 6 to 8 thyme extracts (50, 100, 200 mg/kg, gavage) together with CCl4 (0.5 ml/kg, intraperitoneally, twice a week). At the end of the experiment (28 days), serum sample were prepared and the liver was removed for enzyme tests. CCl4 alone increased the serum levels of ALT, AST and ALP. Also, CCl4 treatment significantly decreased the levels of the antioxidant enzyme superoxide dismutase (SOD) activity and increased malondialdehyde (MDA) levels in the liver. Thyme extract treatment significantly improved the above parameters. Therefore, the results showed that thyme extract is a potent antioxidant agent against CCl4-induced liver damage in rats. Manuscript profile