scholarly journals Differentiated Effects of Allyl Isothiocyanate in Diabetic Rats: From Toxic to Beneficial Action

Toxins ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 3
Author(s):  
Monika Okulicz ◽  
Iwona Hertig ◽  
Tomasz Szkudelski
Keyword(s):  
High Fat Diet ◽  
Allyl Isothiocyanate ◽  
Diabetic Rats ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Anti Cancer ◽  
Concentration Enhancement ◽  
Beneficial Action ◽  
Health Promoting ◽  
Streptozotocin Diabetic Rats

Allyl isothiocyanate (AITC), a constituent of Brassica family plants, has been reported to possess a high bioactivity in animal and human cells, showing ambiguous properties from adverse to beneficial ones. It was reported its genotoxic, carcinogenic, goitrogenic effects. On the other side, AITC has shown anti-cancer, cardioprotective, neuroprotective, and lately anti-obesity abilities. So far, its anti-diabetic effects are poorly explored. We tried to assess AITC action on carbohydrate, lipid and hormonal disorders in high fat diet-fed/streptozotocin diabetic rats. In this report, diabetic rats were treated intragastrically at doses 2.5, 5 and 25 mg/kg b.w./day of AITC for 2 weeks. Irrespectively of doses, AITC considerably lowered thyroid hormones (fT4, fT3), increased liver TG content, and also caused robust LDL-cholesterol and direct bilirubin concentration enhancement. Moreover, AITC at the highest dose caused pancreatic amylase and lipase drops and thyroid gland hypertrophy. AITC at 2.5 and 5 mg significantly reduced blood glucose levels along with robust beta-hydroxybutyric acid drop. Additionally, AITC at 5 mg improved insulin sensitivity (HOMA-IR index) in spite of reduced blood insulin. To conclude, despite amelioration of diabetic hyperglycemia by AITC, the adverse lipids and hormonal effects may exclude its use as a health-promoting compound in terms of anti-diabetic properties.

Effects of Maternal Flaxseed Supplementation on Female Offspring of Diabetic Rats in Serum Concentration of Glucose, Insulin, and Thyroid Hormones

2019 ◽  
Vol 89 (1-2) ◽  
pp. 45-54
Author(s):  
Akemi Suzuki ◽  
André Manoel Correia-Santos ◽  
Gabriela Câmara Vicente ◽  
Luiz Guillermo Coca Velarde ◽  
Gilson Teles Boaventura
Keyword(s):  
Thyroid Hormones ◽  
High Fat Diet ◽  
Female Offspring ◽  
Flaxseed Oil ◽  
Diabetic Rats ◽  
High Fat ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Flaxseed Flour ◽  
Maternal Consumption

Abstract. Objective: This study aimed to evaluate the effect of maternal consumption of flaxseed flour and oil on serum concentrations of glucose, insulin, and thyroid hormones of the adult female offspring of diabetic rats. Methods: Wistar rats were induced to diabetes by a high-fat diet (60%) and streptozotocin (35 mg/kg). Rats were mated and once pregnancy was confirmed, were divided into the following groups: Control Group (CG): casein-based diet; High-fat Group (HG): high-fat diet (49%); High-fat Flaxseed Group (HFG): high-fat diet supplemented with 25% flaxseed flour; High-fat Flaxseed Oil group (HOG): high-fat diet, where soya oil was replaced with flaxseed oil. After weaning, female pups (n = 6) from each group were separated, received a commercial rat diet and were sacrificed after 180 days. Serum insulin concentrations were determined by ELISA, the levels of triiodothyronine (T3), thyroxine (T4) and thyroid-stimulating hormone (TSH) were determined by chemiluminescence. Results: There was a significant reduction in body weight at weaning in HG (−31%), HFG (−33%) and HOG (44%) compared to CG (p = 0.002), which became similar by the end of 180 days. Blood glucose levels were reduced in HFG (−10%, p = 0.044) when compared to CG, and there was no significant difference between groups in relation to insulin, T3, T4, and TSH after 180 days. Conclusions: Maternal severe hyperglycemia during pregnancy and lactation resulted in a microsomal offspring. Maternal consumption of flaxseed reduces blood glucose levels in adult offspring without significant effects on insulin levels and thyroid hormones.

Myocardial metabolic effects of in vivo hydralazine treatment of streptozotocin-diabetic rats

1991 ◽  
Vol 260 (2) ◽  
pp. H516-H521
Author(s):  
A. H. Burns ◽  
L. A. Burns ◽  
L. U. Jurenka ◽  
W. R. Summer
Keyword(s):  
Glucose Oxidation ◽  
Mechanical Response ◽  
Treated Group ◽  
Diabetic Rats ◽  
Metabolic Effects ◽  
Mechanical Function ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Streptozotocin Diabetic Rats

We determined myocardial pumping capacity, glucose oxidation, and mechanical response to ischemia in streptozotocin-diabetic rats treated for 4 wk with or without hydralazine (0.5 mg/g of chow). Plasma triglycerides and cholesterol were decreased 73 and 50%, respectively, in the treated animals. Blood glucose levels were greater than 400 mg/100 g in both groups. Hearts were perfused in the working configuration with buffer containing 5 mM [U-14C]glucose. Starling curves were constructed by increasing left atrial filling pressure from 5 to 20 cm of water. Diabetic heart mechanical function was depressed compared with control and hydralazine treatment restored function to normal. Oxidation of [U-14C]glucose was comparably depressed in the treated and untreated diabetics. The provision of 1 mM dichloroacetate in the perfusate increased glucose oxidation in the hearts from hydralazine-treated rats, however. Twenty minutes of global ischemia resulted in 65% decrease in mechanical function in the hearts of hydralazine-treated group vs. 15% for hearts from nontreated diabetics. The data suggest that measures to normalize lipid metabolism may not normalize myocardial glucose oxidation or permit better mechanical recovery after ischemia in the diabetic myocardium.

scholarly journals Antidiabetic Effect of Fresh Nopal (Opuntia ficus-indica) in Low-Dose Streptozotocin-Induced Diabetic Rats Fed a High-Fat Diet

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Seung Hwan Hwang ◽  
Il-Jun Kang ◽  
Soon Sung Lim
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
High Fat Diet ◽  
Low Dose ◽  
Water Extract ◽  
Diabetic Rats ◽  
Control Group ◽  
High Fat ◽  
Glucose Levels ◽  
Blood Glucose Levels

The objective of the present study was to evaluateα-glucosidase inhibitory and antidiabetic effects of Nopal water extract (NPWE) and Nopal dry power (NADP) in low-dose streptozotocin- (STZ-) induced diabetic rats fed a high-fat diet (HFD). The type 2 diabetic rat model was induced by HFD and low-dose STZ. The rats were divided into four groups as follows: (1) nondiabetic rats fed a regular diet (RD-Control); (2) low-dose STZ-induced diabetic rats fed HFD (HF-STZ-Control); (3) low-dose STZ-induced diabetic rats fed HFD and supplemented with NPWE (100 mg/kg body weight, HF-STZ-NPWE); and (4) low-dose STZ-induced diabetic rats fed HFD and supplemented with comparison medication (rosiglitazone, 10 mg/kg, body weight, HF-STZ-Rosiglitazone). In results, NPWE and NADP had IC50values of 67.33 and 86.68 μg/mL, both of which exhibit inhibitory activities but lower than that of acarbose (38.05 μg/mL) while NPWE group significantly decreased blood glucose levels compared to control and NPDP group on glucose tolerance in the high-fat diet fed rats model (P<0.05). Also, the blood glucose levels of HR-STZ-NPWE group were significantly lower (P<0.05) than HR-STZ-Control group on low-dose STZ-induced diabetic rats fed HFD. Based on these findings, we suggested that NPWE could be considered for the prevention and/or treatment of blood glucose and a potential use as a dietary supplement.

scholarly journals Anti-Diabetic Activity of Egyptian Celery Apigenin

2019 ◽  
Vol 38 (04) ◽  
Author(s):  
Amira Ragab El Barky ◽  
Amany Abdel hamid Ezz ◽  
Karim Samy El-Said ◽  
Mohamed EL-Refaay Sadek ◽  
Tarek Mostafa Mohamed
Keyword(s):  
Blood Glucose ◽  
Islet Cells ◽  
Biochemical Parameter ◽  
Liver Glycogen ◽  
Diabetic Rats ◽  
Glucose Levels ◽  
Hypoglycemic Agent ◽  
Blood Glucose Levels ◽  
Streptozotocin Diabetic Rats ◽  
Normal Architecture

Diabetes is a metabolic disorder that occurs due to a deficiency in insulin secretion, action or both of them. Apigenin is a potent antioxidant, found mainly in celery. Therefore, this study aimed to display the biological activity of apigenin and it is a role in lowering blood glucose levels. Apigenin has been extracted from celery and administrated daily to streptozotocin-diabetic rats for six weeks. Apigenin significantly minimizes blood glucose level, the activities of á-amylase, lipid profile and malondialdehyde in serum. On the other hand, liver glycogen has been elevated in diabetic rats that treated with apigenin. The histopathological and immunohistochemical results confirmed that apigenin can decrease degenerative changes in the pancreatic â-cells. So, this study, depicts that apigenin considers a hypoglycemic agent with the potency to normalize odd in the biochemical parameter of diabetes and keep the normal architecture of the islet cells of the pancreas.

scholarly journals The Combined Extract of Purple Waxy Corn and Ginger Prevents Cataractogenesis and Retinopathy in Streptozotocin-Diabetic Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Paphaphat Thiraphatthanavong ◽  
Jintanaporn Wattanathorn ◽  
Supaporn Muchimapura ◽  
Wipawee Thukham-mee ◽  
Kamol Lertrat ◽  
...  
Keyword(s):  
Ganglion Cell Layer ◽  
Cell Layer ◽  
Diabetic Rats ◽  
Lens Opacity ◽  
Diabetic Cataract ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Biochemical Assays ◽  
Streptozotocin Diabetic Rats ◽  
Waxy Corn

Based on the crucial roles of oxidative stress and aldose reductase on diabetic complications and the protective effect against diabetic eye complication of purple waxy corn and ginger (PWCG) together with the synergistic effect concept, we aimed to determine anticataract and antiretinopathy effects of the combined extract of purple waxy corn and ginger (PWCG). The streptozotocin diabetics with the blood glucose levels >250 mg·dL−1were orally given the extract at doses of 50, 100, and 200 mg/kg·BW−1for 10 weeks. Then, lens opacity and histopathology of retina were determined. The changes of MDA together with the activities of SOD, CAT, GPx, and AR in lens were also determined using biochemical assays. All doses of PWCG decreased lens opacity, MDA, and AR in the lens of diabetic rats. The elevation of CAT and GPx activities was also observed. The antiretinopathy property of the combined extract was also confirmed by the increased number of neurons in ganglion cell layer and thickness of total retina and retinal nuclear layer in diabetic rats. PWCG is the potential functional food to protect against diabetic cataract and retinopathy. However, further studies concerning toxicity and clinical trial are still essential.

Effects of treatment with St. John's Wort on blood glucose levels and pain perceptions of streptozotocin-diabetic rats

Fitoterapia ◽  
2011 ◽  
Vol 82 (4) ◽  
pp. 576-584 ◽  
Author(s):  
Özgür Devrim Can ◽  
Yusuf Öztürk ◽  
Nilgün Öztürk ◽  
Gianni Sagratini ◽  
Massimo Ricciutelli ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Diabetic Rats ◽  
Glucose Levels ◽  
St John’S Wort ◽  
St John's Wort ◽  
Blood Glucose Levels ◽  
Streptozotocin Diabetic Rats

Enhanced in vivo sensitivity of vanadyl-treated diabetic rats to insulin

1990 ◽  
Vol 68 (4) ◽  
pp. 486-491 ◽  
Author(s):  
S. Ramanadham ◽  
G. H. Cros ◽  
J. J. Mongold ◽  
J. J. Serrano ◽  
J. H. McNeill
Keyword(s):  
Blood Glucose ◽  
Diabetic Rats ◽  
Insulin Dosage ◽  
Therapeutic Effects ◽  
Acute Administration ◽  
Entire Treatment Period ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Streptozotocin Diabetic Rats

Vanadium has been reported to have insulin-like properties and has recently been demonstrated to be beneficial in the treatment of diabetic animals. In the present study, concentration dependence of the therapeutic effects of vanadium and the nature of interaction under in vivo conditions between vanadium and insulin were examined in streptozotocin-diabetic rats. During a 2-week period, blood glucose levels in all treated animals were decreased. At higher concentrations of vanadyl this decrease was greater and more rapid, and remained consistently lower for the entire treatment period. Daily intake of vanadyl, however, reached a similar steady state in all groups. Acute administration of submaximal doses of insulin, which had minimal effects in untreated diabetic rats, lowered blood glucose concentrations in vanadyl-treated and vanadyl-withdrawn animals to control levels. Chronic treatment of streptozotocin-diabetic rats with submaximal levels of vanadyl and insulin, ineffective alone, also produced significant decreases in blood glucose levels when used in combination. Finally, the insulin dosage required to maintain a nonglycosuric state in spontaneously diabetic (BB) rats was reduced in the presence of vanadyl. These studies indicate that chronic oral vanadyl treatment (a) produces a concentration-related lowering of blood glucose in diabetic rats, (b) potentiates the in vivo glucose lowering effects of acute and chronic administrations of insulin in streptozotocin-diabetic rats, and (c) substitutes for, or potentiates, the effects of chronic insulin therapy in spontaneously diabetic BB rats.Key words: vanadium, diabetes, insulin, blood glucose.

Evaluation of Glucose and Lipid Lowering Activity of Arganimide A in Normal and Streptozotocin-Induced Diabetic Rats

2019 ◽  
Vol 19 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Mohamed Eddouks ◽  
Farid Khallouki ◽  
Robert W. Owen ◽  
Morad Hebi ◽  
Remy Burcelin
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Oral Administration ◽  
Lipid Profile ◽  
Plasma Cholesterol ◽  
Diabetic Rats ◽  
Lipid Lowering ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Lowering Activity

Aims: Arganimide A (4,4-dihydroxy-3,3-imino-di-benzoic acid) is a compound belonging to a family of aminophenolics found in fruit of Argania spinosa. The purpose of this study was to investigate the glucose and lipid lowering activity of Arganimide A (ARG A). Methods: The effect of a single dose and daily oral administration of Arganimide A (ARG A) on blood glucose levels and plasma lipid profile was tested in normal and streptozotocin (STZ) diabetic rats at a dose of 2 mg/kg body weight. Results: Single oral administration of ARG A reduced blood glucose levels from 26.50±0.61 mmol/L to 14.27±0.73 mmol/L (p<0.0001) six hours after administration in STZ diabetic rats. Furthermore, blood glucose levels were decreased from 5.35±0.30 mmol/L to 3.57±0.17 mmol/L (p<0.0001) and from 26.50±0.61 mmol/L to 3.67±0.29 mmol/L (p<0.0001) in normal and STZ diabetic rats, respectively, after seven days of treatment. Moreover, no significant changes in body weight in normal and STZ rats were shown. According to the lipid profile, the plasma triglycerides levels were decreased significantly in diabetic rats after seven days of ARG treatment (p<0.05). Moreover, seven days of ARG A treatment decreased significantly the plasma cholesterol concentrations (p<0.001). Conclusion: ARG A possesses glucose and lipid-lowering activity in diabetic rats and this natural compound may be beneficial in the treatment of diabetes.

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