scholarly journals Pleurotus tuber-regiumPolysaccharides Attenuate Hyperglycemia and Oxidative Stress in Experimental Diabetic Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Hui-Yu Huang ◽  
Mallikarjuna Korivi ◽  
Ying-Ying Chaing ◽  
Ting-Yi Chien ◽  
Ying-Chieh Tsai
Keyword(s):  
Oxidative Stress ◽  
Serum Insulin ◽  
Glycosylated Hemoglobin ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Antioxidant Properties ◽  
Density Lipoprotein ◽  
Diabetic Rats ◽  
High Fat ◽  
And Oxidative Stress

Pleurotus tuber-regiumcontains polysaccharides that are responsible for pharmacological actions, and medicinal effects of these polysaccharides have not yet been studied in diabetic rats. We examined the antidiabetic, antihyperlipidemic, and antioxidant properties ofP. tuber-regiumpolysaccharides in experimental diabetic rats. Forty rats were equally assigned as diabetic high-fat (DHF) diet and polysaccharides treated DHF groups (DHF+1P, DHF+2P, and DHF+3P, 20 mg/kg bodyweight/8-week). Diabetes was induced by chronic low-dose streptozotocin injections and a high-fat diet to mimic type 2 diabetes. Polysaccharides (1P, 2P, and 3P) were extracted from three different strains ofP. tuber-regium. Fasting blood glucose and glycosylated hemoglobin (HbA1c) levels substantially decreased, while serum insulin levels were restored by polysaccharides treatment compared to DHF. Furthermore, plasma total cholesterol, triglycerides, and low-density lipoprotein levels were significantly(P<0.01)lower in polysaccharide groups. High-density lipoprotein levels were attenuated with polysaccharides against diabetes condition. Polysaccharides inhibited(P<0.01)the lipid peroxidation index (malondialdehyde), and restored superoxide dismutase and glutathione peroxidase activities in the liver of diabetic rats. The antihyperglycemic property of polysaccharides perhaps boosts the antioxidant system that attenuates oxidative stress. We emphasize thatP. tuber-regiumpolysaccharides can be considered as an alternative medicine to treat hyperglycemia and oxidative stress in diabetic rats.

scholarly journals Therapeutic Effects of 5,7-Dihydroxy-6-Oxoheptadecanoic Acid on Dysglycemia, Dyslipidemia, and Other Complications in Diabetic Rats

2020 ◽  
Vol 15 (7) ◽  
pp. 1934578X2093720
Author(s):  
Cuilan An ◽  
Lingling Wang ◽  
Yongli Liu ◽  
Emmanuel Ayobami Makinde ◽  
Huilian Li ◽  
...  
Keyword(s):  
Liver Function ◽  
Serum Insulin ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Insulin Level ◽  
Diabetic Rats ◽  
The Body ◽  
Antioxidant Enzyme Activities ◽  
Therapeutic Effects

The current study aimed to investigate the therapeutic effects of 5,7-dihydroxy-6-oxoheptadecanoic acid (DHA) from Tiliacora triandra on rat models of type 2 diabetes mellitus (T2DM). T2DM was induced with a combination of high-fat diet/streptozotocin (HFD/STZ), and diabetic rats were treated with DHA (25 mg/kg) for 30 days. The body weight, fasting blood glucose (FBG), serum, and liver biochemical parameters, as well as histological evaluations of the liver and pancreas, were evaluated. Diabetic rats displayed a significant increase in FBG, serum lipid profiles (triglycerides, total cholesterol, and low-density lipoprotein cholesterol), liver function enzymes (aspartate transaminase, alkaline phosphatase, and alanine transaminase), creatinine, liver malondialdehyde (MDA), and myeloperoxidase (MPO) contents. Furthermore, insulin level and liver antioxidant enzyme activities (catalase [CAT], superoxide dismutase [SOD], and glutathione peroxidase [GSH-Px]) were significantly reduced in the diabetic rats. Whereas, treatment with DHA significantly reduced FBG, serum lipids, liver function enzymes, serum creatinine, liver MDA, and MPO contents. In addition, treatment with DHA significantly increased serum insulin level and liver SOD, CAT, and GSH-Px activities. In addition, DHA alleviated histopathological changes in the pancreas and liver caused by T2DM. These results portray the antidiabetic and antioxidative properties of DHA and can be considered as a potential treatment for T2DM.

scholarly journals Antidiabetic and Antioxidant Properties ofTriticum aestivumin Streptozotocin-Induced Diabetic Rats

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yogesha Mohan ◽  
Grace Nirmala Jesuthankaraj ◽  
Narendhirakannan Ramasamy Thangavelu
Keyword(s):  
Triticum Aestivum ◽  
Body Weight ◽  
Glycosylated Hemoglobin ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Diabetic Rats ◽  
Albino Rats ◽  
Low Density ◽  
Marker Enzyme

The antidiabetic and antioxidant potential ofTriticum aestivumwere evaluated by usingin vivomethods in normal and streptozotocin-induced diabetic rats. Diabetes was induced in the Wistar strain albino rats by injecting streptozotocin at a dose of 55 mg/kg body weight. Ethanolic extracts ofTriticum aestivumat doses of 100 mg/kg body weight were administered orally for 30 days. Various parameters were studied and the treatment group with the extract showed a significant increase in the liver glycogen and a significant decrease in fasting blood glucose, glycosylated hemoglobin levels, and serum marker enzyme levels. The total cholesterol and serum triglycerides levels, low density lipoprotein, and very low density lipoprotein were also significantly reduced and the high density lipoprotein level was significantly increased upon treatment with theTriticum aestivumethanol extract. A significant decrease in the levels of lipid peroxides, superoxide dismutase, and glutathione peroxidise and increase in the levels of vitamin E, catalase, and reduced glutathione were observed inTriticum aestivumtreated diabetic rats. Thus, from this study we conclude that ethanolic extract ofTriticum aestivumexhibited significant antihyperglycemic, hypolipidemic, and antioxidant activities in streptozotocin-induced diabetic rats.

scholarly journals Exercise training and de-training effects on serum leptin and TNF-α in high fat induced diabetic rats

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Hamideh Dinari Ghozhdi ◽  
Ali Heidarianpour ◽  
Maryam Keshvari ◽  
Hassan Tavassoli
Keyword(s):  
Exercise Training ◽  
Serum Insulin ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Diabetic Rats ◽  
Normal Diet ◽  
Aerobic Exercise Training ◽  
High Fat ◽  
Serum Leptin ◽  
Tnf Α

Abstract Background Adipocytokines, which are secreted by the adipose tissue, contribute to the pathogenesis of obesity-related complications. To evaluate this assumption, we investigated the effects of aerobic exercise training (AET), resistance exercise training (RET), and 4 weeks of de-training on serum leptin and TNF-α levels in diabetic rats. Method 36 Wistar rats were divided into normal diet (ND) (control, RET, AET) and high-fat diet (HFD) + STZ (control, RET, AET) groups. Serum insulin, leptin, and TNF-α levels were assessed by commercial ELISA kits. Also fasting blood glucose (FBG), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG) levels were measured by the colorimetric kits. Results Diabetes induction increased body weight (BW) and FBG, and decreased insulin compared to the ND rats’ groups (p < 0.001). 12-weeks of AET and RET programs in the trained diabetic rats led to a decrease in TG, LDL-C, leptin, TNF-α, and FBG, and an increase in insulin compared to the HFD + STZ-C group (p < 0.001). Besides, there was no difference between AET and RET in improving the variables studied (p > 0.05). Also, de-training led to increased BW, TG, leptin, and TNF-α compared to the end of the exercise training (p < 0.05). The correlation between the variables studied was established at different stages of the study (p < 0.05), and only BW was not correlated with insulin during exercise training and de-training (p > 0.05). Conclusion These findings indicate that both AET and RET are useful in reducing levels of serum adipocytokines (TNF-α, leptin) in diabetic and non-diabetic rats. At the same time, 4 weeks of de-training was sufficient to lose the metabolic adaptations.

scholarly journals Bilobalide Enhances AMPK Activity to Improve Liver Injury and Metabolic Disorders in STZ-Induced Diabetes in Immature Rats via Regulating HMGB1/TLR4/NF-κB Signaling Pathway

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Meng Zhao ◽  
Jianpin Qin ◽  
Wenting Shen ◽  
Aiping Wu
Keyword(s):  
Liver Injury ◽  
Serum Insulin ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Blood Lipid ◽  
Diabetic Rats ◽  
Compound C ◽  
Group I ◽  
Immature Rats

This study was aimed at examining the effect and underlying mechanisms of bilobalide (BB) on hepatic injury in streptozotocin- (STZ-) induced diabetes mellitus (DM) in immature rats. Immature rats (one day old) were randomly divided into five groups: group I, control nondiabetic rats; group II, STZ-induced, untreated diabetic rats; groups III/IV/V, STZ-induced and BB-treated diabetic rats, which were intraperitoneally injected with BB (2.5 mg/kg, 5 mg/kg, or 10 mg/kg) after 3 days followed by STZ treatment. We observed that BB improved the histopathological changes and maintained normal glucose metabolism, blood lipid, and liver function indicators, such as fasting blood glucose, obesity index, HbA1c, HOMA-IR, fast serum insulin, adiponectin, total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), aspartate transaminase (AST), and alanine transaminase (ALT) in STZ-induced DM in immature rats by a biochemical analyzer or ELISA. Meanwhile, Western blot analysis showed that in STZ-induced DM immature rats, BB decreased the expression of apoptosis-related proteins Bax, cleaved caspase-3, and cleaved caspase-9 while enhancing the Bcl-2 expression; BB downregulated the expression of ACC related to fat anabolism, while upregulating the expression of CPT-1 related to fat catabolism. Strikingly, treatment with BB significantly increased the expression of AMPKα1 as well as inhibited HMGB1, TLR4, and p-P65 expression in hepatic tissues of immature DM rats. AMPK inhibitor (compound C, CC) cotreated with BB undermined the protective effect of BB on the liver injury. The results of the present study suggested BB may have a significant role in alleviating liver damage in the STZ-induced immature DM rats.

scholarly journals Hypoglycemic, antidyslipidemic, and antioxidant activities of methanol extract of Struchium sparganophora leaves in alloxan-induced oxidative stress-mediated diabetes in rats

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
A. M. Adeosun ◽  
F. O. Asejeje ◽  
O. M. Ighodaro ◽  
B. A. Oluwole ◽  
O. A. Akinloye
Keyword(s):  
Oxidative Stress ◽  
Blood Glucose ◽  
Methanol Extract ◽  
Antioxidant Activities ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Diabetic Rats ◽  
Stress Markers

Abstract Background Diabetes mellitus is clinically underlined by hyperglycemia and dyslipidemia. In view of this, the current study assessed the glycemic and lipidemic control potentials of methanol extract of Sruchium sparganophora leaves (SPA) in the alloxan-induced diabetic model using male Wistar rats. Experimental diabetes was induced through a single intraperitoneal injection of 120 mg/kg freshly prepared alloxan. Thirty-six rats were randomly assigned into six groups of normoglycemic control, untreated diabetic group, and diabetic treated with (i) metformin (12 mg), (ii) metformin 12 mg + SPA 300 mg/kg, (iii) SPA 300 mg/kg, and (iv) SPA 600 mg/kg per os twice at 9.00 and 18.00 h daily for 10 days. Fasting blood glucose (FBG) level and markers of dyslipidemia, and oxidative stress markers were determined. Results SPA at selected doses decreased fasting blood glucose which was significantly (p < 0.05) raised by alloxan. Increase in plasma total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglyceride (TG) concentrations and decrease in HDL-cholesterol (HDL-C) concentration (p < 0.05) caused by alloxan were significantly moderated by SPA at selected doses. Glutathione-s-transferase (GST), superoxide dismutase (SOD), and catalase (CAT) activities reduced by alloxan (p < 0.05) in both the liver and pancreas were reversed by SPA 300 and 600, and its combination with metformin. Decreased reduced glutathione (GSH) concentration in alloxan diabetic rats was also reversed by the extract, while the level of malondialdehyde (MDA) exacerbated by alloxan (p < 0.05) in the tissues was decreased by the extracts. Conclusion Struchium sparganophora possesses considerable antihyperglycemic, antidyslipidemic, and antioxidant potentials without compromising organ functionality.

scholarly journals Effect of Extracts of Cloves (Syzygium Aromaticum) on Hepatic Cell Damage and Oxidative Stress Caused by Diabetes in Adult Rats

2020 ◽  
Vol 26 (4) ◽  
pp. 432-447
Author(s):  
Tala Pourlak ◽  
◽  
Monireh Halimi ◽  
Tannaz Pourlak ◽  
Parham Maroufi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cell Damage ◽  
Serum Insulin ◽  
Density Lipoprotein ◽  
Diabetic Rats ◽  
Control Group ◽  
Syzygium Aromaticum ◽  
Adult Rats ◽  
Insulin Levels ◽  
And Oxidative Stress

Aims: In this study, we investigated the effect of clove extract (Syzygium aromaticum) on liver cell damage and oxidative stress caused by diabetes in adult rats. Methods & Materials: For this study, 28 female rats were collected and divided into four groups: A: Control group; B: Diabetic Control group (DC) which received 20% glycerol dissolved in normal saline as carriers; C: Diabetic rats (DSA) treated with cloves hydroalcoholic extract (4 mg/kg); d) diabetic rats (DG) treated with glibenclamide (5 mg/kg) as a standard drug. Findings: The fasting blood sugar and serum triglyceride levels in the DC group increased significantly compared to the control group (P<0.05). In DC, DG, and DSA groups, high-density lipoprotein, and serum insulin levels decreased significantly compared to the control group (P<0.05). Also, in DG and DSA groups, high-density lipoprotein and serum insulin levels increased significantly compared to the DC group. Conclusion: Cloves can affect fasting blood sugar, serum insulin levels, serum fat profile levels, and prevent liver tissue damage in diabetic rats caused by streptozotocin.

scholarly journals Hypoglycemic Activity and Antioxidative Stress of Extracts and Corymbiferin fromSwertia bimaculata In VitroandIn Vivo

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Zhaoxia Liu ◽  
Luosheng Wan ◽  
Yuedong Yue ◽  
Zuoqi Xiao ◽  
Yutang Zhang ◽  
...  
Keyword(s):  
Serum Insulin ◽  
Low Density Lipoprotein ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Glucose Consumption ◽  
Diabetic Rats ◽  
Oral Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Alternative Agent

The present study was to investigate the anti-diabetic activities ofSwertia bimaculata. Based on the glucose consumption ofS. bimaculataextractsand different fractions (petroleum, dichloromethane, ethyl acetate,n-butanol and water extracts) in 3T3-L1 adipocyte assay, ethanol (ETH) and dichloromethane (DTH) extracts had the most effective potency. Furthermore, ETH, DTH and corymbiferin (the most abundant component of DTH) were evaluated for anti-diabetic effects in high fat and sucrose fed combined with low dose streptozocin induced diabetic rats. DTH and corymbiferin displayed remarkable anti-diabetic activities. The fasting blood glucose levels were significantly decreased, while the serum insulin levels were obviously increased. The oral glucose tolerance was also improved. The lowed serum total cholesterol, low density lipoprotein (LDL) and triglyceride levels and increased ratio of HDL (high density lipoprotein)/LDL were observed. The insulin sensitivity was improved on the basis of increased expressions of insulin-receptor substrate-2, phosphatidylinositol 3-kinase and Ser/Thr kinase AKT2. And also DTH and corymbiferin improved antioxidant capacity and carbohydrate metabolism in diabetic rats, along with the improvement of histopathology of livers and pancreaticβcells. Corymbiferin was one of active constituents, responsible for anti-diabetic properties. Therefore,S. bimaculatacould be considered as an alternative agent against diabetes mellitus.

Sequoyitol ameliorates diabetic nephropathy in diabetic rats induced with a high-fat diet and a low dose of streptozotocin

2014 ◽  
Vol 92 (5) ◽  
pp. 405-417 ◽  
Author(s):  
Xian-Wei Li ◽  
Yan Liu ◽  
Wei Hao ◽  
Jie-Ren Yang
Keyword(s):  
Diabetic Nephropathy ◽  
Blood Glucose ◽  
High Fat Diet ◽  
Low Dose ◽  
Serum Insulin ◽  
Fasting Blood Glucose ◽  
Diabetic Rats ◽  
High Fat

Sequoyitol decreases blood glucose, improves glucose intolerance, and enhances insulin signaling in ob/ob mice. The aim of this study was to investigate the effects of sequoyitol on diabetic nephropathy in rats with type 2 diabetes mellitus and the mechanism of action. Diabetic rats, induced with a high-fat diet and a low dose of streptozotocin, and were administered sequoyitol (12.5, 25.0, and 50.0 mg·(kg body mass)−1·d−1) for 6 weeks. The levels of fasting blood glucose (FBG), serum insulin, blood urea nitrogen (BUN), and serum creatinine (SCr) were measured. The expression levels of p22phox, p47phox, NF-κB, and TGF-β1 were measured using immunohistochemisty, real-time PCR, and (or) Western blot. The total antioxidative capacity (T-AOC), as well as the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) were also determined. The results showed that sequoyitol significantly decreased FBG, BUN, and SCr levels, and increased the insulin levels in diabetic rats. The level of T-AOC was significantly increased, while ROS and MDA levels and the expression of p22phox, p47phox, NF-κB, and TGF-β1 were decreased with sequoyitol treatment both in vivo and in vitro. These results suggested that sequoyitol ameliorates the progression of diabetic nephropathy in rats, as induced by a high-fat diet and a low dose of streptozotocin, through its glucose-lowering effects, antioxidant activity, and regulation of TGF-β1 expression.

scholarly journals Serum Apelin and Obesity-Related Complications in Egyptian Children

2018 ◽  
Vol 6 (8) ◽  
pp. 1354-1358 ◽  
Author(s):  
Maged A. El Wakeel ◽  
Ghada M. El-Kassas ◽  
Alyaa H. Kamhawy ◽  
Essam M. Galal ◽  
Maysa S. Nassar ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Childhood Obesity ◽  
Serum Insulin ◽  
Low Density Lipoprotein ◽  
Linear Regression Analysis ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Z Score ◽  
Obese Children ◽  
Egyptian Children

BACKGROUND: The rapidly increasing prevalence of childhood obesity became a major burden on health worldwide, giving an alarm to clinicians and researchers. Adipocytes act as an active endocrine organ by releasing plenty of bioactive mediators (adipokines) that play a major role in regulating metabolic processes. Apelin is a recently identified adipokine that is expressed in adipocytes.AIM: The current work aimed to uncover the relation between serum apelin and childhood obesity and its related complications as hypertension and hyperglycemiaMETHOD: A group of 50 obese and 31 non-obese; sex- and age-matched children were enrolled in our study with a mean age of (9.5 ± 2.1) and (8.7 ± 1.3) respectively. Anthropometric measurements, blood pressure, were assessed in all studied participants, we also determined the lipid profile, serum insulin, fasting blood glucose (FBG) level, HOMA-IR and serum apelin.RESULTS: Obese children had higher levels of HbA1c, FBG, serum insulin, HOMA-IR, total cholesterol, triglycerides, low-density lipoprotein (LDL) and diastolic blood pressure (DBP Z-score); compared to controls (all P < 0.05). Apelin was significantly higher in obese children versus controls and correlated positively with BMI Z-Score (P = 0.008), DBP Z-Score (P = 0.02), cholesterol, TG (both P = 0.02), serum insulin (P = 0.003), FBG and HOMA-IR (both P = 0.001). Linear regression analysis showed that FBG was the most effective factor in predicting the level of serum apelin (P = 0.04).CONCLUSION: This work supports the hypothesis that apelin may have a crucial role in the pathogenesis of health hazards related to obesity in children including insulin resistance, hypertension and a higher risk of occurrence of metabolic syndrome.

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