scholarly journals An immunohistochemical and biochemical evidences of pancreatic β-cell regeneration in type 2 diabetic rats after treated with Aegle marmelos leaf extract and Aegeline

2021 ◽  
Vol 12 (1) ◽  
pp. 868-876
Author(s):  
Gopalan DH ◽  
Vani M ◽  
Manikandan S ◽  
Vijayakumar V
Keyword(s):  
Beta Cells ◽  
Pancreatic Beta Cells ◽  
Leaf Extract ◽  
Blood Glucose Concentration ◽  
Serum Insulin ◽  
Diabetic Rats ◽  
Albino Rats ◽  
Aegle Marmelos ◽  
Wistar Albino Rats

The study aims to investigate the Immunohistochemical changes in pancreatic beta cells in fructose fed, streptozocin (STZ) induced Type 2 Diabetes (T2DM) rats treated with various doses of leaf extract of Aegle marmelos (AAM) and Aegeline (AG). 42 adult male wistar albino rats were separated into 7 groups, including Vehicle Control (VC); T2DM; T2DM + AAM 250 mg/kg; T2DM + AAM 500 mg/kg; T2DM + AG 20mg/kg; T2DM + AG 50 mg/kg and T2DM + AG 100 mg/kg. Experimental T2DM was created by a single dose of 40 mg/kg STZ injection intra-peritoneally along with 10% of fructose solution given orally for 30 days. Calculated dosages of AAM and AG were given with oral gavage for 30 days. Pancreas was harvested and processed. Slides were stained using hematoxylin and eosin (H&E) stains. Insulin expressing beta-cells was analyzed using immunohistochemistry. Fructose fed, STZ induced rats showed degenerative expressions in beta-cells. In STZ treated rats, AG reduced the blood glucose concentration and serum insulin levels at the maximum functional dose compared to AAM. The immunohistochemical information suggests that the AG at 100 mg/kg dose has the capability of making the dormant cells to reproduce to restore the lost cells of islets of Langerhans.

scholarly journals Cognition enhancing abilities of vitamin D, epalrestat and their combination in diabetic rats with and without scopolamine induced amnesia

2021 ◽  
Author(s):  
Utkarsha D. Kulkarni ◽  
Meena Kumari Kamalkishore ◽  
Amberkar Mohanbabu Vittalrao ◽  
Praveen Kumar Siraganahalli Eshwaraiah
Keyword(s):  
Vitamin D ◽  
Diabetic Rats ◽  
Albino Rats ◽  
Biochemical Evaluation ◽  
Wistar Albino Rats ◽  
Behavioural Tests ◽  
Per Oral ◽  
Chronic Hyperglycaemia ◽  
And Oxidative Stress

AbstractPersistent hyperglycaemia and scopolamine were used to inflict amnesia in rats. Chronic hyperglycaemia causes metabolic impairment, neuronal dysfunction and oxidative stress causing cognitive impairment. This study aimed to determine anti amnesic activities of vitamin D, epalrestat and their combination against diabetes and scopolamine induced cognitive dysfunction. A total of eighty-eight Wistar albino rats, eleven groups, and 8 rats/Gr., were used. Type 2 diabetes mellitus was induced in all groups, except Gr.1 which was treated with 2 ml normal saline. Gr. 2 to 11 by feeding high fat diet for 28 days followed by single dose streptozotocin 35 mg/kg i.p. Hyperglycemic rats were screened with blood sugar level > 200 mg/dL. Gr. 2 rats were treated with only streptozotocin and Gr. 3 to 6 were treated with streptozotocin and test drugs donepezil 1 mg/kg, vitamin D, 27 mcg/kg, epalrestat 57 mg/kg, vitamin D + epalrestat, per oral, respectively. Gr. 7 rats were treated with only streptozotocin + scopolamine and all others from Gr. 8 to 11 were treated with streptozotocin + scopolamine and donepezil, vitamin D, epalrestat, vitamin D + epalrestat respectively. The gold standard behavioural tests were conducted by using Morris water maze and passive avoidance paradigms after 30–60 min of inj. scopolamine, 0.5 mg/kg, intra-peritoneal. Hippocampal tissue was taken for histopathological and biochemical evaluation. Rats treated with donepezil, vitamin D, epalrestat and vitamin D + epalrestat showed significant improvement in behavioural, biochemical and histopathological parameters as compared to streptozotocin and (streptozotocin + scopolamine) treated rats. This study underscores cognition enhancing abilities of vitamin D and epalrestat, and their combination in diabetic rats with and without scopolamine.

scholarly journals Preliminary Nutrient Determination and Regeneration of Pancreatic Islet Cells by Extracts of Spondias mombin Leaves in Streptozotocin-Induced Diabetic Rats

2020 ◽  
Vol 8 (1) ◽  
pp. 15-20
Author(s):  
Nkeiruka Eluehike ◽  
Iyere Osolase Onoagbe
Keyword(s):  
Beta Cells ◽  
Pancreatic Beta Cells ◽  
Islet Cells ◽  
Histopathological Examination ◽  
Serum Insulin ◽  
Diabetic Rats ◽  
C Peptide ◽  
Spondias Mombin ◽  
Male Wistar Rats ◽  
Ethanol Extracts

Background: There is a growing trend towards the use of medicinal plant that can prevent degeneration of pancreatic cells and regenerate islet cells in diabetes treatment Objectives: The possible effects of the extracts of Spondias mombin leaves on the regeneration of pancreatic beta cells in streptozotocin (STZ)-induced diabetic rats were determined in this study. Methods: Twenty-five male Wistar rats were randomly divided into 5 groups (A-E) including normal and diabetic rats. Aqueous and ethanol extracts of S. mombin were administered orally to diabetic rats in groups D and E for 12 weeks. Blood samples were collected for serum insulin and C-peptide assays. The pancreases were also collected for histopathological examination. Additionally, mineral and vitamin contents of the leaves were determined using standard procedures. Results: The highest vitamin content was vitamin C in the leaves, while the highest mineral content was calcium. Treatment with extracts of Spondias mombin attenuated the STZ-induced hypoinsulinemia, which was evident from the increased serum insulin and c-peptide levels in the extract treated groups. Histopathological examination of the pancreas revealed an increase in the number and size of the pancreatic beta cells in the extracts treated groups in comparison to the shrunken and diminished islet cells observed in the untreated animals. Conclusion: Extracts of S. mombin leaves are capable of regenerating pancreatic β-cells which were destroyed by streptozotocin induction.

Hyperglycemia causes oxidative stress in pancreatic beta-cells of GK rats, a model of type 2 diabetes

Diabetes ◽  
1999 ◽  
Vol 48 (4) ◽  
pp. 927-932 ◽  
Author(s):  
Y. Ihara ◽  
S. Toyokuni ◽  
K. Uchida ◽  
H. Odaka ◽  
T. Tanaka ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Type 2 Diabetes ◽  
Beta Cells ◽  
Pancreatic Beta Cells ◽  
Gk Rats

Acute Toxicity Assessment of Ethanolic Leaf Extract of Macrotyloma uniflorum L. on Wistar Albino Rats

2017 ◽  
Vol 24 (1) ◽  
pp. 22 ◽  
Author(s):  
S. Priyanga ◽  
S. Hemmalakshmi ◽  
B. Vidya ◽  
P. Chella Perumal ◽  
V. K. Gopalakrishnan ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Leaf Extract ◽  
Toxicity Assessment ◽  
Albino Rats ◽  
Macrotyloma Uniflorum ◽  
Wistar Albino Rats ◽  
Ethanolic Leaf Extract

scholarly journals The acute effects of different spironolactone doses on cardiac function in streptozotocin-induced diabetic rats

2017 ◽  
Vol 95 (11) ◽  
pp. 1343-1350
Author(s):  
Aleksandra Vranic ◽  
Stefan Simovic ◽  
Petar Ristic ◽  
Tamara Nikolic ◽  
Isidora Stojic ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Systolic Function ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Albino Rats ◽  
Acute Administration ◽  
Rat Hearts ◽  
Patients With Diabetes ◽  
Streptozotocin Induced Diabetes ◽  
Wistar Albino Rats

Currently, cardiovascular diseases are the leading cause of global mortality, while diabetes mellitus remains an important cause of cardiovascular morbidity. A recent study showed that patients with diabetes mellitus treated with mineralocorticoid receptor antagonists have improved coronary microvascular function, leading to improved diastolic dysfunction. In this study, we evaluated the influence of acute administration of spironolactone on myocardial function in rats with streptozotocin-induced diabetes mellitus, with special emphasis on cardiodynamic parameters in diabetic rat hearts. The present study was carried out on 40 adult male Wistar albino rats (8 weeks old). Rats were randomly divided into 4 groups (10 animals per group): healthy rats treated with 0.1 μmol/L of spironolactone, diabetic rats treated with 0.1 μmol/L of spironolactone, healthy rats treated with 3 μmol/L of spironolactone, and diabetic rats treated with 3 μmol/L of spironolactone. Different, dose-dependent, acute responses of spironolactone treatment on isolated, working diabetic and healthy rat heart were observed in our study. In healthy rats, better systolic function was achieved with higher spironolactone dose, while in diabetic rats, similar effects of low and high spironolactone dose were observed.

scholarly journals Analgesic and Anti-Inflammatory Activity of Total Crude Leaf Extract of <i>Phytolacca dodecandra</i> in Wistar Albino Rats

2019 ◽  
Vol 10 (03) ◽  
pp. 259-271
Author(s):  
Loyce Nakalembe ◽  
Josephine N. Kasolo ◽  
Edward Nyatia ◽  
Aloysius Lubega ◽  
Godfrey S. Bbosa
Keyword(s):  
Leaf Extract ◽  
Inflammatory Activity ◽  
Albino Rats ◽  
Phytolacca Dodecandra ◽  
Crude Leaf Extract ◽  
Anti Inflammatory ◽  
Wistar Albino Rats

scholarly journals Hypoglycemic Potential of Dietary Supplementation of Protein Isolate from Fermented Cucumeropsis manii in Streptozotocin Induced Hyperglycemic in Male Wistar Albino Rats

2021 ◽  
pp. 31-42
Author(s):  
A. O. Abiola ◽  
A. O. Iyoribhe ◽  
S. A. Adeniyi ◽  
O. B. Adu ◽  
A. S. Ogunbowale ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Blood Glucose Concentration ◽  
Diabetic Control ◽  
Protein Isolate ◽  
Diabetic Rats ◽  
Control Group ◽  
Albino Rats ◽  
Antioxidant Enzyme Activities ◽  
Cvd Risk ◽  
Streptozotocin Induced Diabetes

The effect of Protein isolate from fermented melon seeds (Ogiri Protei Isolates; OPI) of Cucumeropsis manii on blood glucose, lipid profile, and antioxidant enzyme activities in streptozotocin (STZ)-induced diabetic rats was investigated. Thirty Male Wistar rats were divided into five equal groups. GThe first control group with no exposure. The second group of rats with Streptozotocin-induced non-treated diabetes. The 3rd and 4th groups of rats with Streptozotocin-induced diabetes supplemented with Ogiri protein isolates (200, 600 mg/kg in diet). And the 5th group of rats with Streptozotocin-induced diabetes administered glibenclamide in a dose 500 ug/kg in diet [17]. The OPI was administered for 6 weeks. The administration of OPI reduced the blood glucose concentration of the STZ-induced diabetic rats. Sera and hepatic superoxide dismutase, activities of the STZ-induced diabetic rats were significantly (P< 0.05) increased in comparison with the diabetic control rats. Lipid peroxidation of the supplemented OPI diabetic rats was significantly (P< 0.05) decreased in comparison with the diabetic control rats as the administration of OPI to the STZ-induced diabetic rats significantly increased the enzymes’ activities. The concentration of low-density lipoproteins in the OPI supplemented rats was significantly elevated. These data demonstrate that OPI supplements might be beneficial for correcting hyperglycemia but the consumption of OPI can modulate some tissue lipids in a direction not beneficial for CVD risk in patients with diabetes.

Ulcerogenic Potential of Eucalyptus globulus L. Leaf Extract in Wistar Albino Rats

2017 ◽  
Vol 13 (1) ◽  
pp. 45-51
Author(s):  
S.B. Obakiro ◽  
L. Bunalema ◽  
J. Gakunga-Nd ◽  
E. Nyatia ◽  
J.P. Waako
Keyword(s):  
Eucalyptus Globulus ◽  
Leaf Extract ◽  
Albino Rats ◽  
Wistar Albino Rats

scholarly journals Disruption of Beta-Cell Mitochondrial Networks by the Orphan Nuclear Receptor Nor1/Nr4a3

Cells ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 168 ◽  
Author(s):  
Anne-Françoise Close ◽  
Nidheesh Dadheech ◽  
Hélène Lemieux ◽  
Qian Wang ◽  
Jean Buteau
Keyword(s):  
Beta Cell ◽  
Beta Cells ◽  
Nuclear Receptor ◽  
Pancreatic Beta Cells ◽  
Orphan Nuclear Receptor ◽  
Atp Production ◽  
Human Beta Cells ◽  
Glucose Stimulated Insulin Secretion ◽  
Mitochondrial Networks

Nor1, the third member of the Nr4a subfamily of nuclear receptor, is garnering increased interest in view of its role in the regulation of glucose homeostasis. Our previous study highlighted a proapoptotic role of Nor1 in pancreatic beta cells and showed that Nor1 expression was increased in islets isolated from type 2 diabetic individuals, suggesting that Nor1 could mediate the deterioration of islet function in type 2 diabetes. However, the mechanism remains incompletely understood. We herein investigated the subcellular localization of Nor1 in INS832/13 cells and dispersed human beta cells. We also examined the consequences of Nor1 overexpression on mitochondrial function and morphology. Our results show that, surprisingly, Nor1 is mostly cytoplasmic in beta cells and undergoes mitochondrial translocation upon activation by proinflammatory cytokines. Mitochondrial localization of Nor1 reduced glucose oxidation, lowered ATP production rates, and inhibited glucose-stimulated insulin secretion. Western blot and microscopy images revealed that Nor1 could provoke mitochondrial fragmentation via mitophagy. Our study unveils a new mode of action for Nor1, which affects beta-cell viability and function by disrupting mitochondrial networks.

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