scholarly journals Polyploidy Analysis and Attenuation of Oxidative Stress in Hepatic Tissue of STZ-Induced Diabetic Rats Treated with an Aqueous Extract ofVochysia rufa

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Izabela Barbosa Moraes ◽  
Camilla Manzan-Martins ◽  
Neire Moura de Gouveia ◽  
Luciana Karen Calábria ◽  
Karen Renata Nakamura Hiraki ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Aqueous Extract ◽  
Morphological Changes ◽  
Liver Homogenate ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Hepatic Tissue ◽  
Polyploid Cell ◽  
Sod Activity ◽  
Rat Livers

Diabetes mellitus (DM) is characterized by hyperglycemia and alterations in the metabolism of lipids, carbohydrates, and proteins. Due to its hypoglycemic effectVochysia rufais frequently used in Uberlandia, Brazil, to treat DM. Despite its popularity, there is little information about its effect on hepatic tissue. Therefore, we evaluated the histoarchitecture, oxidative stress parameters, and polyploidy of liver tissue from streptozotocin- (STZ-) induced diabetic rats treated with aqueous extract ofVochysia rufa(AEV). Histology was determined by fixing the livers, processing, and staining with HE. Oxidative stress was determined by evaluating CAT, GPx, and SOD activity in liver homogenates and hepatic mitochondria fraction and by measuring GST, GSH levels and lipid peroxidation (MDA). Polyploidy was determined by subjecting isolated hepatocyte nuclei to flow cytometry. In the diabetic group, GST activity and GSH rates decreased whereas liver homogenate analysis showed that GPx, SOD activity and MDA increased. AEV treatment restored all parameters to normal levels. The oxidative stress analysis of hepatic mitochondria fraction showed similar results. Lower polyploid cell populations were found in the diabetic rat livers, even after glibenclamide treatment. Thus, AEV treatment efficiently reduced hepatic oxidative stress caused by STZ-induced diabetes and produced no morphological changes in the histological analysis.

scholarly journals Anethum graveolens L‎. Alleviates Sperm ‎Damage by Limiting Oxidative Stress ‎and Insulin ‎Resistance ‎in ‎Diabetic Rats ‎

2020 ◽  
Vol 14 (1) ◽  
pp. 35-44
Author(s):  
Ebrahim Abbasi-Oshaghi ◽  
Iraj Khodadadi ◽  
Fatemeh Mirzaei ◽  
Mehrdad Ahmadi ◽  
Heidar Tayebinia ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Morphological Changes ◽  
Diabetic Rats ◽  
Male Rats ◽  
Diabetic Rat ◽  
Anethum Graveolens ◽  
Sod Activity ◽  
Histological Changes ◽  
Anti Oxidant

Background: It has been reported that diabetes is associated with sperm ‎damage and infertility. Objective: The purpose of this experiment was to survey the effect of Anethum graveolens L. (Dill) powder on sperm profiles, oxidative stress, insulin resistance, and histological changes in male diabetic rats. Methods: Male rats were randomly divided into 6 groups (n=7); group 1: normal rats, 2: normal rats + 100mg/kg Dill, 3: normal rats + 300mg/kg Dill, 4: diabetic rats, 5: diabetic rats + 100mg/kg Dill, and 6: diabetic rats + 300mg/kg Dill. After 2 months of treatments, the sperm profile, anti-oxidant activity, superoxide dismutase (SOD) activity, and malondialdehyde were measured. The histopathology of testis was evaluated. Hormonal changes and tumor necrosis factor-α (TNF-α) levels were measured by ELISA. Results: Total anti-oxidant and SOD activity in diabetic rats significantly decreased, while MDA concentration was significantly increased in the testis and pancreas of diabetic rats compared with control. However, the use of Dill significantly normalized these profiles. The treatment of diabetic rats with Dill changed the sperm parameters. The levels of testosterone, FSH, and LH in diabetic rats were significantly reduced, but the treatment with Dill did not alter the level of these hormones. Dill also significantly normalized testis morphological changes, insulin resistance, and inflammation. Conclusion: The use of Dill normalized oxidative stress, inflammation, and insulin resistance in diabetic rats that correlated with sperm profile and testis histological changes. The treatment of diabetic rat models with Dill did not show harmful effects on sperm profiles.

scholarly journals Renoprotective Effects of Trigonella foenum and Cinnamon on Type 2 Diabetic Rats

2017 ◽  
Vol 5 (1) ◽  
pp. 17-21
Author(s):  
Seyed Mehrdad Kassaee ◽  
Mohammad Taghi Goodarzi ◽  
Ebrahim Abbasi Oshaghi
Keyword(s):  
Antioxidant Capacity ◽  
Aqueous Extract ◽  
Structural Changes ◽  
Morphological Changes ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Control Group ◽  
Chow Diet ◽  
Plasma Urea ◽  
Cinnamon Extract

Background: Herbal medicine is used in all parts of the world mainly for prevention and treatment of various disorders due to better cultural suitability, lower cost and less side effects. Objectives: The aim of this study was to determine the hypoglycemic and kidney-protective effects of the aqueous extract of Trigonella foenum and Cinnamon on diabetic rats. Methods: In this experimental study, rats were randomly divided into 6 groups as follows: Group 1: control group in which animals received chow diet, group 2: diabetic rats, group 3: diabetic rat + 2% T. foenum extract (w/w), group 4: diabetic rat + 8% of Trigonella foenum extract (w/w), group 5: diabetic rat + 2% Cinnamon extract (w/w) and group 6: diabetic rat + 8% of Cinnamon extract (w/w). Aqueous extract of T. foenum leaves and Cinnamon were administered to diabetic rats for 4 weeks. The malondialdehyde (MDA) level and total antioxidant capacity were also measured in kidney of the animals. In addition, morphological changes of the kidney were also analyzed by the light microscope. Results: Trigonella foenum and Cinnamon extract in diabetic animals significantly reduced MDA levels and restored antioxidant capacity (P<.05). T. foenum and Cinnamon also normalized plasma urea and creatinine concentration in diabetic rats (P<.05). Administration of T. foenum and Cinnamon extract especially at the dose of 8 mg/kg normalized histopatholgical changes of kidney in diabetic animal. Conclusions: The findings of this experiment showed that T. foenum extract and Cinnamon restored antioxidant capacity and structural changes of kidney.

scholarly journals Islet Transplantation Attenuating Testicular Injury in Type 1 Diabetic Rats Is Associated with Suppression of Oxidative Stress and Inflammation via Nrf-2/HO-1 and NF-κB Pathways

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Xiandong Zhu ◽  
Feixia Guo ◽  
Hengjie Tang ◽  
Chongchu Huang ◽  
Gangyin Xie ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Islet Transplantation ◽  
Group Versus ◽  
Myocardial Damage ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Testicular Damage ◽  
Sod Activity ◽  
Respective Treatment ◽  
Testicular Injury

Testicular structural and functional impairment is a serious complication in male diabetes mellitus (DM) patients that leads to impaired fertility in adulthood. In contrast to other endocrine therapies, islet transplantation (IT) can effectively prevent and even reverse diabetic nephropathy and myocardial damage. However, whether IT can alleviate diabetes-induced testicular injury remains unclear. In this study, we sought to investigate the effect of IT on diabetes-induced testicular damage. A diabetic rat model was established by streptozotocin injection. DM, IT, and insulin treatment (INS) groups were compared after 4 weeks of respective treatment. We confirmed that IT could effectively attenuate diabetes-induced testicular damage and recover sperm counts more extensively compared with INS in diabetic rats. In addition, significantly higher levels of superoxide dismutase (SOD) activity and lower contents of malondialdehyde (MDA) were detected in the testes of the IT group versus diabetic rats. Mechanism studies revealed that IT significantly activates the expression of Nrf-2, HO-1, and NQO-1 and inhibits upregulation of the NF-κB expression in response to DM, while INS only exhibit slight impact on the protein expression. Therefore, we speculate that IT may prevent the progression of testicular damage by downregulating oxidative stress and inhibiting inflammation via Nrf-2/HO-1 and NF-κB pathways.

scholarly journals Role of Hyperketonemia in Inducing Oxidative Stress and Cellular Damage in Cultured Hepatocytes and Type 1 Diabetic Rat Liver

2015 ◽  
Vol 37 (6) ◽  
pp. 2160-2170 ◽  
Author(s):  
Preeti Kanikarla-Marie ◽  
Sushil K. Jain
Keyword(s):  
Oxidative Stress ◽  
Liver Damage ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Cellular Damage ◽  
Diabetic Rat ◽  
Blood Levels ◽  
Per Se ◽  
Rat Livers

Background/Aims: Type 1 diabetic (T1D) patients have a higher incidence of liver disease. T1D patients frequently experience elevated plasma ketone levels along with hyperglycemia. However, no study has examined whether hyperketonemia per se has any role in excess liver damage in T1D. This study investigates the hypothesis that hyperketonemia can induce oxidative stress and cellular dysfunction. Methods: STZ treated diabetic rats, FL83B hepatocytes, and GCLC knocked down (GSH deficient) hepatocytes were used. Results: The blood levels of ALT and AST, biomarkers of liver damage, and ketones were elevated in T1D rats. An increase in NOX4 and ROS along with a reduction in GSH and GCLC levels was observed in T1D rat livers in comparison to those seen in non-diabetic control or type 2 diabetic rats. MCP-1 and ICAM-1 were also elevated in T1D rat livers and ketone treated hepatocytes. Macrophage markers CCR2 and CD11A that interact with MCP-1, and ICAM-1 respectively, were also elevated in the T1D liver, indicating macrophage infiltration. Additionally, activated macrophages increased hepatocyte damage with ketone treatment, which was similar to that seen in GCLC knockdown hepatocytes without ketones. Conclusion: Hyperketonemia per se can induce macrophage mediated damage to hepatocytes and the liver, caused by GSH depletion and oxidative stress up regulation in T1D.

Oxidative stress and altered prostanoid production in the placenta of streptozotocin-induced diabetic rats

2002 ◽  
Vol 14 (2) ◽  
pp. 117 ◽  
Author(s):  
Verónica White ◽  
Alicia Jawerbaum ◽  
Débora Sinner ◽  
Carolina Pustovrh ◽  
Evangelina Capobianco ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Incubation Medium ◽  
Late Pregnancy ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Sod Activity ◽  
Pregnant Rats ◽  
Prostanoid Production ◽  
And Function ◽  
Diabetic Placenta

The oxidative stress in placental tissues during late pregnancy, as well as the relationship between reactive oxygen species (ROS) and the arachidonic acid (AA) pathway was evaluated in a neonatal streptozotocin (STZ)-induced diabetic rat model. Lipoperoxide levels are increased in diabetic tissues compared with control tissues (P<0.001) and they seem to increase throughout the development of gestation both in control (P<0.05) and STZ-induced diabetic (P<0.001) rats. Superoxide dismutase (SOD) activity is not modified on different days of pregnancy, but enzymatic activity is lower in diabetic tissues than in control tissues (P<0.01). Labour is preceded by an increase in placental 14C-prostaglandin conversion from 14C-AA in control and diabetic animals (P<0.05) and the thromboxane B2 (TXB2)/6-keto-prostaglandin F1α (PGF1α) ratio is higher in diabetic placental tissues than in controls. The addition of SOD and glutathione to the incubation medium does not modify prostanoid levels in control rats, but does decrease the AA conversion to PGF2α, PGE2 and TXB2 (P<0.05) in diabetic placenta. Superoxide radical generation (hypoxanthine/xanthine oxidase or hydrogen peroxide added to the incubation medium) produces a decrease in 6-keto-PGF1α (P<0.05) in control and diabetic tissues, whereas PGF2α, PGE2 and TXB2 levels, and PGF2α and TXB2 production are increased in control and diabetic animals respectively (P<0.05). Diabetic pregnant rats supplemented with a diet containing 400 mg day-1of α-tocopherol (vitamin E) have diminished placental PGF2α and TXB2 production and lipoperoxide levels. The results show a higher TXB2 and a decreased 6-keto-PGF1α placental production that may be linked to increased oxidative stress and to a reduced antioxidant capacity in STZ-induced diabetic rats. These imbalances, probably involved in abnormal placental structure and function, may potentially be corrected with dietary supplementation of α-tocopherol in diabetic pregnancies.

scholarly journals Treatment with Aqueous Extract fromCroton cajucaraBenth Reduces Hepatic Oxidative Stress in Streptozotocin-Diabetic Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Graziella Ramos Rodrigues ◽  
Fábio Cangeri Di Naso ◽  
Marilene Porawski ◽  
Éder Marcolin ◽  
Nélson Alexandre Kretzmann ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Aqueous Extract ◽  
Liver Lipid ◽  
Treated Group ◽  
Diabetic Rats ◽  
Hepatic Tissue ◽  
Croton Cajucara

Croton cajucaraBenth is a plant found in Amazonia, Brazil and the bark and leaf infusion of this plant have been popularly used to treat diabetes and hepatic disorders. The present study was designed to evaluate the oxidative stress as well as the therapeutic effect ofCroton cajucaraBenth (1.5 mL of theC. cajucaraextract i.g.) in rats with streptozotocin-induced diabetes.Croton cajucaraBenth was tested as an aqueous extract for its phytochemical composition, and its antioxidant activityin vitrowas also evaluated. Lipid peroxidation and superoxide dismutase, catalase, and glutathione reductase activities were measured in the hepatic tissue, as well as the presence activation of p65 (NF-κB), through western blot. Phytochemical screening ofCroton cajucaraBenth detected the presence of flavonoids, coumarins and alkaloids. The extract exhibited a significant antioxidant activity in the DPPH-scavenging and the hypoxanthine/xanthine oxidase assays. Liver lipid peroxidation increased in diabetic animals followed by a reduction in theCroton-cajucara-Benth-treated group. There was activation of p65 nuclear expression in the diabetic animals, which was attenuated in the animals receiving theCroton cajucaraBenth aqueous extract. The liver tissue in diabetic rats showed oxidative alterations related to the streptozotocin treatment. In conclusion theCroton cajucaraBenth aqueus extract treatment effectively reduced the oxidative stress and contributed to tissue recovery.

Attenuation of oxidative stress in hepatic and pancreatic tissues of STZ-induced diabetic rats treated with aqueous extract of Vochysia rufa

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
NM De Gouveia ◽  
IB Moraes ◽  
RMF Sousa ◽  
MB Neto ◽  
AV Mundim ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Aqueous Extract ◽  
Diabetic Rats

scholarly journals Oxidative Stress in Rats After 60 Days of Hypergalactosemia or Hyperglycemia

2003 ◽  
Vol 22 (6) ◽  
pp. 423-427 ◽  
Author(s):  
Mary Otsyula ◽  
Matthew S. King ◽  
Tonya G. Ketcham ◽  
Ruth A. Sanders ◽  
John B. Watkins
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Insulin Treatment ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Glutathione Disulfide ◽  
Hepatic Lipid Peroxidation ◽  
Streptozotocin Diabetic Rats

Two of the models used in current diabetes research include the hypergalactosemic rat and the hyperglucosemic, streptozotocin-induced diabetic rat. Few studies, however, have examined the concurrence of these two models regarding the effects of elevated hexoses on biomarkers of oxidative stress. This study compared the activities of superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase and the concentrations of glutathione, glutathione disulfide, and thiobarbituric acid reactants (as a measure of lipid peroxidation) in liver, kidney, and heart of Sprague-Dawley rats after 60 days of either a 50% galactose diet or insulin deficiency caused by streptozotocin injection. Most rats from both models developed bilateral cataracts. Blood glucose and glycosy-lated hemoglobin A1c concentrations were elevated in streptozotocin diabetic rats. Streptozotocin diabetic rats exhibited elevated activities of renal superoxide dismutase, cardiac catalase, and renal and cardiac glutathione peroxidase, as well as elevated hepatic lipid peroxidation. Insulin treatment of streptozotocin-induced diabetic rats normalized altered markers. In galactosemic rats, hepatic lipid peroxidation was increased whereas glutathione reductase activity was diminished. Glutathione levels in liver were decreased in diabetic rats but elevated in the galactosemic rats, whereas hepatic glutathione disulfide concentrations were decreased much more in diabetes than in galactosemia. Insulin treatment reversed/prevented all changes caused by streptozotocin-induced diabetes. Lack of concomitance in these data indicate that the 60-day galactose-fed rat is not experiencing the same oxidative stress as the streptozotocin diabetic rat, and that investigators must be cautious drawing conclusions regarding the concurrence of the effects of the two animal models on oxidative stress biomarkers.

scholarly journals Antidiabetics in combination with hydroxychloroquine improve antioxidant and hepatoprotective activities in alloxan-induced diabetic rats

2015 ◽  
Vol 18 (1) ◽  
pp. 72-77
Author(s):  
Shaheda Zannah ◽  
Monirul Islam ◽  
Yusuf Ali ◽  
Md Asaduzzaman ◽  
Md Shahid Sarwar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Pharmaceutical Journal ◽  
Diabetic Rats ◽  
Hepatoprotective Effect ◽  
Sod Activity ◽  
Pancreatic Cells ◽  
Additional Protection ◽  
Serum Glutamate Pyruvate Transaminase ◽  
Glutamate Pyruvate ◽  
Serum Glutamate

Hyperglycemia exerts toxic effects on the pancreatic ?-cells. This study investigated the hypothesis that the antidiabetic drugs glibenclamide and metformin, in combination with hydroxychloroquine (HCQ) offer additional protection for the pancreas against oxidative stress and produce hepatoprotective effect in alloxan-induced diabetic rats. Diabetes was induced in male Long-Evans rats by a single dose of alloxan (120 mg/kg; i.p.). Different groups of diabetic animals were treated with glibenclamide (10 mg/70 kg, i.p.), metformin (850 mg/70 kg, i.p.), HCQ (300 mg/70 kg, i.p.) and combination of both glibenclamide and metformin with HCQ, separately for a period of 28 days. Diabetic rats had significantly elevated levels of serum glutamate oxaloacetate transaminase (SGOT) and serum glutamate pyruvate transaminase (SGPT), while catalase (CAT) and superoxide dismutase (SOD) activity were significantly reduced. Glibenclamide and metformin produced no significant effects on antioxidant enzymes but both showed significant (p<0.05) result in reducing SGOT and SGPT level in diabetic rats. In contrast, the combination of glibenclamide or metformin with HCQ showed better effect on up-regulation of CAT and SOD activity and down-regulation of SGOT and SGPT activity in comparison with the antidiabetic drug alone. These findings suggest that, HCQ potentiates the effect of glibenclamide and metformin to protect pancreas against oxidative stress and produce hepatoprotective effect in diabetic rats.Bangladesh Pharmaceutical Journal 18(1): 72-77, 2015

scholarly journals Ellagic Acid ameliorates Streptozotocin-Induced Diabetic Hyperalgesia in Rat: Involvement of Oxidative Stress

2021 ◽  
Author(s):  
Siamak Shahidi ◽  
◽  
Alireza Komaki ◽  
Safoura Raoufi ◽  
Iraj Salehi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ellagic Acid ◽  
Therapeutic Potential ◽  
Biological Activities ◽  
Antinociceptive Effect ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Tail Flick ◽  
Stress Markers ◽  
Total Antioxidant

Background/Aim: Hyperalgesia is one of the current complications of diabetes mellitus that Oxidative stress and inflammation have principal role in its development. Ellagic Acid (EA) as a herbal component, has some biological activities, including antioxidant and anti-inflammatory effects. This study was designed to evaluate the possible beneficial effect of EA on hyperalgesia in streptozotocin (STZ)-induced diabetic rat. Materials and Methods: Rats were divided into control(vehicle received), diabetic, EA (25, 50 mg/kg)-treated control and EA(25, 50 mg/kg)-treated diabetic groups. Diabetes was induced by a single intraperitoneal (IP) injection of streptozotocin (STZ) (60 mg/Kg). EA was administered daily by oral gavage for 4 weeks. Hyperalgesia was assessed using tail flick (TF) and hot plate (HP) tests. Also, oxidative stress markers including malondialdehyde (MDA), total oxidant status (TOS) and total antioxidant capacity (TAC) in the serum were evaluated. Results: Diabetic animals showed marked reductions in TF and HP latencies, elevation of serum MDA level and TOS and diminution of serum TAC compared to controls significantly. Treatment of Diabetic rats with EA ameliorated reduction of TF latency at the dose of 25 mg/kg and HP latency at the dose of 50 mg/kg. Furthermore EA significantly increased TAC and decreased MDA level at dose of 50 mg/kg and reduced TOS at both doses in the serum of diabetic animals. In EA treated normal rats we could see no significant alterations in the parameters studied. Conclusion: These results displayed potent antinociceptive effect of EA in diabetic rats via attenuating oxidative stress. This proposes therapeutic potential of EA for damping diabetic hyperalgesia.

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