Insulin treatment prevents vascular dysfunction in early juvenile alloxan-induced diabetes mellitus

1984 ◽  
Vol 247 (1) ◽  
pp. H132-H138
Author(s):  
S. M. Mueller
Keyword(s):  
Diabetes Mellitus ◽  
Insulin Treatment ◽  
Vascular Dysfunction ◽  
Treated Group ◽  
Diabetic Rats ◽  
Testing Procedures ◽  
Threshold Response ◽  
Sympathetic Function ◽  
Microvascular Pathology ◽  
Juvenile Diabetic

Microvascular pathology and sympathetic autonomic dysfunction have been described early in alloxan-induced diabetic juvenile rats. To determine the longitudinal development of these changes and whether insulin treatment can alter them, vascular and sympathetic function were studied in alloxan-induced (42.5 mg/kg) juvenile diabetic rats and saline-treated controls. The rats were examined 1 and 14 days after induction of diabetes. An insulin-treated group was studied with the 14-day group. Hindquarter perfusion with an artificial solution at constant flow/100 g hindquarter wt was used. After 14 days of diabetes mellitus, the diabetic group showed a significantly depressed response to central ischemia (P less than 0.001), maximal vasoconstriction (P less than 0.02), and maximal dilation (P less than 0.001) compared with both the control and insulin-treated group. The threshold response to norepinephrine did not differ. After 1 day of glucose elevation no differences were present between the control and diabetic animals during any of the testing procedures. These results suggest that severe vascular dysfunction develops early in juvenile-onset alloxan diabetes and that it can be prevented with insulin treatment.

scholarly journals Diabetes mellitus increased integrins gene expression in rat endometrium at the time of embryo implantation

2019 ◽  
Author(s):  
Abbas Bakhteyari ◽  
Yasaman Zarrin ◽  
Parvaneh Nikpour ◽  
Zeinab Sadat Hosseiny ◽  
Zeinab Sadat Hosseiny ◽  
...  
Keyword(s):  
Gene Expression ◽  
Diabetes Mellitus ◽  
Group Treatment ◽  
Embryo Implantation ◽  
Treated Group ◽  
Diabetic Rats ◽  
Diabetic Rat ◽  
Control Group ◽  
Genes Expression ◽  
Normal Menstrual Cycle

Background: Diabetes mellitus deeply changes the genes expression of integrin (Itg) subunits in several cells and tissues such as monocytes, arterial endothelium, kidney glomerular cells, retina. Furthermore, hyperglycemia could impress and reduce the rate of successful assisted as well as non-assisted pregnancy. Endometrium undergoes thorough changes in normal menstrual cycle and the question is: What happens in the endometrium under diabetic condition? Objective: The aim of the current study was to investigate the endometrial gene expression of α3, α4, αv, Itg β1 and β3 subunits in diabetic rat models at the time of embryo implantation. Materials and Methods: Twenty-eight rats were randomly divided into 4 groups: control group, diabetic group, pioglitazone-treated group, and metformin-treated group. Real-time PCR was performed to determine changes in the expression of Itg α3, α4, αv, β1, and β3 genes in rat’s endometrium. Results: The expression of all Itg subunits increased significantly in diabetic rats’ endometrium compared with control group. Treatment with pioglitazone significantly reduced the level of Itg subunits gene expression compared with diabetic rats. While metformin had a different effect on α3 and α4 and elevated these two subunits gene expression. Conclusion: Diabetes mellitus significantly increased the expression of studied Itg subunits, therefore untreated diabetes could be potentially assumed as one of the preliminary elements in embryo implantation failure.

scholarly journals Effects of Extracts of Plathymenia Reticulata Benth and Azadirachta Indica (Neem) in Glycated Hemoglobin in Diabetic Rats

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A438-A439
Author(s):  
Ezio De Martino Neto ◽  
Joyce Satil Chaves da Silva ◽  
Eliane Cristina Lourenço ◽  
Arthur Cesário de Castro Neto ◽  
Isabella Cecilio Resende Ferreira ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Azadirachta Indica ◽  
Insulin Treatment ◽  
Glycated Hemoglobin ◽  
Positive Control ◽  
Negative Control ◽  
Diabetic Rats ◽  
Male Adult ◽  
Significant Difference

Abstract Introduction: The Plathymenia reticulata benth is a herbal medicine that has properties of pancreatic islet hyperplasia and glycemic control in diabetic rats. Neem (Azadirachta indica A. Juss, Meliaceae) is a tree native to India that has several medicinal effects. Goal: To verify the effect of glycated hemoglobin levels in rats with type 1 and non-diabetic diabetes mellitus, in treatment with Plathymenia Reticulata Benth, Neem and the association between them. compared to insulin. Methodology: Diabetes was induced by intraperitoneal streptozotocin (65mg/kg) administration after a 24-hour fast. The diagnosis was made using a blood glucose value above 200mg/dl. The study was conducted in 60 male adult Wistar rats, weighing between 180 and 220 grams, divided into 9 groups, between diabetics (DM) and non-diabetic controls (NdM), and treated with Neem (300 mg/kg), cold aqueous extract of Plathymenia (100 mg/kg), water (negative control) and insulin (3 IU/day) - positive control; and association between plants. The treatment was performed by orogastric gavage for a period of 28 consecutive days, and weekly weight and daily feed intake were performed. Data were analyzed using ANOVA and Tukey-Kramer’s pos-hoc test, with a significance level of 5% using the SPSS25.0 software. The results are expressed on average ± EPM. Results: There was a significant difference in glycated hemoglobin levels in rats submitted to insulin treatment (6.18 ± 0.36) compared to those submitted to treatment with Neem (10.12 ± 1.29, p=0.047), Plathymenia+Neem (12.09 ± 0.38, p=0.006) and water (10.86 ± 1.26, p=0.015). However, no significant difference was observed between the reduction in glycated hemoglobin levels in the groups submitted to insulin treatment compared to the group treated with Plathymenia (7.30 ± 0.68, p=0.911). Conclusion: The results allow us to evaluate a non-inferiority condition in relation to the use of the Plathymenia when compared to treatment with insulin therapy, positive control in the treatment of type 1 diabetes mellitus. The Plathymeniamay present as a herbal option in the treatment of the disease and prevention of complications. Further studies are necessary to evaluate the effect of the extract on other aspects related to the pathology.

scholarly journals Diabetes Type 1 Negatively Influences Leydig Cell Function in Rats, Which is Partially Reversible By Insulin Treatment

Endocrinology ◽  
2021 ◽  
Vol 162 (4) ◽  
Author(s):  
Isabel Viola Wagner ◽  
Nora Klöting ◽  
Iuliia Savchuk ◽  
Lisa Eifler ◽  
Alexandra Kulle ◽  
...  
Keyword(s):  
Leydig Cell ◽  
Insulin Treatment ◽  
Cell Function ◽  
Blood Glucose Control ◽  
Treated Group ◽  
Diabetic Rats ◽  
Testosterone Levels ◽  
Leydig Cell Function

Abstract Type 1 diabetes mellitus (T1DM) is associated with impaired spermatogenesis and lower testosterone levels and epididymal weight. However, the underlying processes in the testis are unknown and remain to be elucidated. Therefore, the present study focused on the effects of T1DM on testicular function in a spontaneously diabetic rat model. BB/OKL rats after diabetes manifestation were divided into 3 groups: those without insulin treatment and insulin treatment for a duration of 2 and of 6 weeks. Anthropometrical data, circulating levels of gonadotrophins, testosterone, and inhibin B were measured. Intratesticular testosterone, oxidative stress, inflammation, and apoptosis were analyzed. Key enzymes of steroidogenesis were evaluated in the testis. Untreated diabetic rats had significantly lower serum follicle-stimulating hormone and luteinizing hormone levels. Serum and intratesticular testosterone levels significantly decreased in untreated diabetic rats compared to healthy controls. Key markers of Leydig cell function were significantly downregulated at the RNA level: insulin-like factor 3 (Insl3) by 53% (P = .006), Star by 51% (P = .004), Cyp11A1 by 80% (P = .003), 3Beta-Hsd2 by 61% (P = .005), and Pbr by 52% (P = .002). In the insulin-treated group, only Cyp11A1 and 3Beta-Hsd2 transcripts were significantly lower. Interestingly, the long-term insulin–treated group showed significant upregulation of most steroidogenic enzymes without affecting testosterone levels. Tumor necrosis factor α and apoptosis were significantly increased in the long-term insulin–treated rats. In conclusion T1DM, with a severe lack of insulin, has an adverse action on Leydig cell function. This is partially reversible with well-compensated blood glucose control. Long-term T1DM adversely affects Leydig cell function because of the process of inflammation and apoptosis.

scholarly journals Anti-hyperglycemic Effects of Diacerein in Alloxan-Induced Diabetes Mellitus in Wistar Albino Rats

2020 ◽  
pp. 107-113
Author(s):  
Arsalan Uqaili ◽  
Samia Siddiqui ◽  
Roomi Aijaz ◽  
Yar Muhammad Nizammani ◽  
Navaid Kazi ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Body Weight ◽  
Blood Glucose ◽  
Treated Group ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Control Group ◽  
Albino Rats ◽  
Group B ◽  
Group D

Objective: To determine the anti-hyperglycemic effects of interleukin-1 inhibitor (diacerein) in alloxan induced diabetic albino wistar rats. This experimental study was performed at the Department of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tando Jam within 6 months from April 2016 to September 2016. Total of 160 adult Albino Wistar Rats having an average of 200 to 300 grams body weights were selected. Animals were categorized into 4 groups as; Group A (n=15): Control rats – receive 0.9% normal saline as placebo Experimental Groups Group B (n=15): Experimental Control (Diabetic rats) - Alloxan50 mg/kg body weight intraperitoneal. Group C (n=15): Diabetic rats + Diacerein (30 mg/kg/day) orally daily. Group D (n=15): Diabetic rats + Diacerein (50 mg/kg/day) orally daily. Animals were kept and treated as per the NIH Guideline for Use and Care of Laboratory Animals. Diabetes mellitus was induced via a single intraperitoneal injection of 50 milligram/kg alloxan monohydrated dissolved in aseptic 0.9% saline. After 72 hours, blood specimens were taken from the caudal vein of the rats and glucose level>200 mg/dL was taken as diabetes. Experimental rats were given diacerein approximately 30 and 50 mg orally for 6 weeks. At the completion of experiment the body weight was measured of each animal by electronic measuring balance and blood sample was taken from each animal of all groups to assess the blood glucose level and HbA1c level. Data were recorded via self-made proforma and analysis was done by using SPSS version 20. Results: Average body weight of Diabetic control (Group B) was 193.33±22.50 grams, which was lower in contrast to Diacerein treated group C 202.47±25.70 grams and significantly lower as compared to Diacerein treated group D as  212.6±23.43 grams. A significant increase in blood glucose levels 182.07±10.63 mg/dl was noted in the Diabetic control (Group B) compared to Diacerein treated group C (110.13± 8.54 mg/dl) and group D (85.87±8.41 mg/dl) (P=0.001). HbA1c was markedly raised in the Group B- diabetic controls, while diacerein treated diabetic rats (groups C and D) showed a significant decrease in HbA1c (P=0.001). Conclusion: It was concluded that Diacerein achieves the Euglycemic state by reducing the levels of blood glucose and glycated hemoglobin (HbA1c) in Alloxan-Induced diabetes mellitus in Wistar Albino Rats.

GLUT3 glucose transporter isoform in rat testis: localization, effect of diabetes mellitus, and comparison to human testis

1994 ◽  
Vol 267 (6) ◽  
pp. R1488-R1495 ◽  
Author(s):  
C. F. Burant ◽  
N. O. Davidson
Keyword(s):  
Diabetes Mellitus ◽  
Glucose Transporter ◽  
Insulin Treatment ◽  
Diabetic Rats ◽  
Human Testis ◽  
Hexose Transporter ◽  
Rat Testis ◽  
Protein Levels ◽  
Efficient Uptake ◽  
Transporter Expression

Facilitative hexose transporter expression was compared in rat and human testes. In rat testis, only GLUT1 and GLUT3 proteins were expressed. By contrast, human testis expressed GLUT1 and GLUT3 in addition to GLUT5. Immunocytochemical studies showed that GLUT3 was expressed in all cells of the seminiferous epithelium of rat testis, including sperm. In human testis, GLUT3 was expressed exclusively in cells juxtaposed to the lumen of the seminiferous tubule and ejaculate sperm, a pattern of expression that was identical to that of GLUT5. Induction of insulinopenic diabetes mellitus in the rat did not alter the levels or the distribution of GLUT3 protein or mRNA in the testis. Moreover insulin treatment of the diabetic rats did not produce changes in GLUT3 mRNA or protein levels. The results show that rat and human testis express the high-affinity glucose transporter GLUT3, which allows for the efficient uptake of glucose. In addition, the testis may be protected from changes in glucose transporter expression in experimental diabetes.

Aspartame Administration and Insulin Treatment Altered Brain Levels of CYP2E1 and CYP3A2 in Streptozotocin-Induced Diabetic Rats

2014 ◽  
Vol 33 (4) ◽  
pp. 325-331 ◽  
Author(s):  
Rosario Nosti-Palacios ◽  
Josefina Gómez-Garduño ◽  
Dora Molina-Ortiz ◽  
Raúl Calzada-León ◽  
Víctor Manuel Dorado-González ◽  
...  
Keyword(s):  
Insulin Treatment ◽  
Combined Treatment ◽  
Diabetic Rats ◽  
Male Rat ◽  
Diabetic Rat ◽  
Toxic Substances ◽  
Protein Activity ◽  
Tissue Samples ◽  
Juvenile Diabetic ◽  
The Brain

This study demonstrates that aspartame consumption and insulin treatment in a juvenile diabetic rat model leads to increase in cytochrome P450 (CYP) 2E1 and CYP3A2 isozymes in brain. Diabetes mellitus was induced in postweaned 21-day-old Wistar male rat by streptozotocin. Animals were randomly assigned to one of the following groups: untreated control, diabetic (D), D-insulin, D-aspartame, or the D-insulin + aspartame-treated group. Brain and liver tissue samples were used to analyze the activity of CYP2E1 and CYP3A2 and protein levels. Our results indicate that combined treatment with insulin and aspartame in juvenile diabetic rats significantly induced CYP2E1 in the cerebrum and cerebellum without modifying it in the liver, while CYP3A2 protein activity increased both in the brain and in the liver. The induction of CYP2E1 in the brain could have important in situ toxicological effects, given that this CYP isoform is capable of bioactivating various toxic substances. Additionally, CYP3A2 induction in the liver and brain could be considered a decisive factor in the variation of drug response and toxicity.

scholarly journals In-vivo Hypoglycemic Activity of Grewia asiatica Fruit Extract in Streptozotocin Mediated Diabetic Rats

2021 ◽  
pp. 68-75
Author(s):  
Zuneera Akram ◽  
Aisha Noreen ◽  
Muzammil Hussain ◽  
Maryam Inayat ◽  
Sobia Akhter ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Alternative Therapy ◽  
Treated Group ◽  
Diabetic Rats ◽  
Albino Rats ◽  
Fruit Extract ◽  
Standard Drug ◽  
Glucose Levels

Diabetes mellitus has high global prevalence and occurrence and is considered to bean endocrinological and/or metabolic disorder. Conventional drug treatment is costly and has toxic side effects, although it is successful in treating diabetes mellitus. If effective and less toxic, herbal medicine will thus include alternative therapy. This research has been designed to investigate the role of Grewia asiatica extract in the control of diabetes in male albino rats with Streptozotocin mediated type 2 diabetes. Grewia asiatica fruit extract at a dose of 200mg/kg was given to Streptozotocin mediated type II DM Rats. A known anti-diabetic drug, Glibenclamide has been used as a standard drug. The method of the research was to monitor the effect of Grewia asiatica on the blood glucose level of Rats. In this study, Rats were split into four categories i.e. Control, Streptozotocin treated, Streptozotocin + Glibenclamide treated and Streptozotocin +Grewia asiatica extract-treated group.  Grewia asiatica fruit extract significantly improve the blood glucose levels as compared to the standard drug Glibenclamide in Streptozotocin mediated diabetic group. Conclusion: It was concluded that Grewia asiatica may be used in the treatment of diabetes or decreasing the elevated level of blood sugar.

scholarly journals Ethanolic Leaf Extract of Gymnema sylvestre Ameliorates Hyperglycemia and Pancreatic Oxidative Stress in Alloxan induced Diabetic Rats

2020 ◽  
Vol 11 (3) ◽  
pp. 426-432
Author(s):  
Kumud Ranjan Thakur ◽  
Shree Ram Radmadeo ◽  
Annpurna Kumari
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Indian Subcontinent ◽  
Hematological Parameters ◽  
Ethanolic Extract ◽  
Biochemical Parameter ◽  
Treated Group ◽  
Diabetic Rats ◽  
Gymnema Sylvestre ◽  
Anti Oxidant

Diabetes mellitus (DM) is a serious metabolic disorder with altered carbohydrate, fat, and protein metabolism. In the last four decades, India has emerged as an epicenter of the global diabetes mellitus pandemic. Rapid changes in the developmental scenario, demographic changes, and living style in the Indian subcontinent have led to the explosive increase in diabetes. Present research probes with ethanolic extract of Gymnema sylvestre (500 mg/kg.b.w) for treatment of hyperglycemia and related oxidative stress caused by Alloxan (100 mg/kg.b.wt), as a diabetogenic agent. 25 rats were included in the research divided into 5 groups, each containing 5 rats. Group 1 (normal rats), Group II (Diabetic rats (DM), Group III (DM+ treated for 10 days), Group IV (DM+20 days treated), Group V (DM+30 days treated). Blood samples and pancreatic tissues were collected at each interval of time. The blood sample was used for biochemical parameter and tissues were used for the anti-oxidant assay. Gymnema sylvestre extract (GSE) showed glucose-lowering property meanwhile, insulin secretion also increased as compared to Diabetic rats. Other tests like amylase, lipase, ALT, and AST also showed significant recovery after the extract administration. Oxidative stress was found in the Diabetic group, but after extract treatment concentration of superoxide dismutase, Glutathione-S-transferase, catalase, Glutathione peroxidase, Glutathione, and Total thiol was regained. Imbalance in serum electrolyte recovered and dysregulated hematological parameters due to stress and hyperglycemia showed convincing results. The finding suggests Gymnema sylvestre could be used as a hypoglycemic as well as an anti-oxidant agent in diabetes.

scholarly journals Gmelina arboreaRoxb. (Family: Verbenaceae) Extract Upregulates theβ-Cell Regeneration in STZ Induced Diabetic Rats

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Anoja Priyadarshani Attanayake ◽  
Kamani Ayoma Perera Wijewardana Jayatilaka ◽  
Chitra Pathirana ◽  
Lakmini Kumari Boralugoda Mudduwa
Keyword(s):  
Diabetes Mellitus ◽  
Plant Extract ◽  
Blood Glucose Concentration ◽  
Serum Insulin ◽  
Fasting Blood Glucose ◽  
Treated Group ◽  
Diabetic Rats ◽  
Bark Extract ◽  
Cell Regeneration ◽  
Standard Drug

Gmelina arboreaRoxb. (common name: Et-demata, Family: Verbenaceae) has been used traditionally in Sri Lanka as a remedy against diabetes mellitus. The objective of the present study was to evaluate antidiabetic mechanisms of the aqueous bark extract ofG. arboreain streptozotocin induced (STZ) diabetic male Wistar rats. Aqueous bark extract ofG. arborea(1.00 g/kg) and glibenclamide as the standard drug (0.50 mg/kg) were administered orally using a gavage to STZ diabetic rats (65 mg/kg, ip) for 30 days. The antidiabetic mechanisms of aqueous extract ofG. arborea(1.00 g/kg) were determined at the end of the experiment. The fasting blood glucose concentration was significantly lowered and the serum insulin and C-peptide concentrations were increased by 57% and 39% in plant extract treated rats on day 30, respectively (p<0.05). The histopathology and immunohistochemistry results of the plant extract treated group showed a regenerative effect onβ-cells of the pancreas in diabetic rats. In addition, serum lipid parameters were improved inG. arboreaextract treated diabetic rats. The results revealed that the aqueous stem bark extract ofG. arborea(1.00 g/kg) showed beneficial effects against diabetes mellitus through upregulating theβ-cell regeneration and biosynthesis of insulin in diabetic rats.

Sign in / Sign up

Export Citation Format

Share Document