Glucocorticoids mediate a decrease in AVP-regulated  urea transporter in diabetic rat inner medulla

Providing glucocorticoids to adrenalectomized (Adx) rats results in downregulation of the vasopressin (AVP)-regulated urea transporter (VRUT) in the renal inner medullary (IM) tip. To examine the physiological relevance of this response, we studied rats with uncontrolled diabetes mellitus induced by streptozotocin (STZ), since these rats have increased corticosterone production and urea excretion. We measured VRUT protein in extracts from the IM tip or base of pair-fed control and diabetic rats by Western analysis using an antibody to rat VRUT. In the IM tip, VRUT was significantly reduced by 39% in diabetic compared with control rats. In the IM base, there was no significant difference between diabetic and control rats. To determine whether the decrease in VRUT in the IM tip was mediated by glucocorticoids, the experiment was repeated using the following three groups of rats: 1) Adx alone, 2) Adx + STZ, and 3) Adx + STZ + replacement with a physiological dose of glucocorticoid. There was no significant difference in VRUT between Adx and Adx + STZ rats. However, VRUT was significantly reduced by 32% in the IM tip of glucocorticoid-treated Adx + STZ rats compared with control Adx + STZ rats. We conclude that glucocorticoids regulate the abundance of VRUT protein independently of insulin in diabetic rats.

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Superoxide dismutase recovers altered endothelium-dependent relaxation in diabetic rat aorta

AJP Heart and Circulatory Physiology ◽

10.1152/ajpheart.1991.261.4.h1086 ◽

1991 ◽

Vol 261 (4) ◽

pp. H1086-H1094 ◽

Cited By ~ 41

Author(s):

Y. Hattori ◽

H. Kawasaki ◽

K. Abe ◽

M. Kanno

Keyword(s):

Superoxide Dismutase ◽

Superoxide Anion ◽

Rat Aorta ◽

Diabetic Rats ◽

Diabetic Rat ◽

Transient Nature ◽

Significant Difference ◽

Time Courses ◽

And Control ◽

Endothelium Dependent Relaxation

Experiments were designed to characterize endothelium-dependent relaxation in thoracic aortic rings obtained from streptozotocin-induced diabetic rats. When the degree of the peak relaxation was compared, the endothelium-dependent relaxant responses to acetylcholine, histamine, or ADP in precontracted aortic rings showed that there was no significant difference between diabetic and control vessels. However, the time courses appeared quite different. The endothelium-dependent relaxant responses in diabetic vessels were more transient than those in control vessels. In addition, the rapid fade of the endothelium-dependent responses observed in diabetic vessels was significantly suppressed by pretreatment with superoxide dismutase. Pretreatment with catalase, deferoxamine, allopurinol, or indomethacin did not prevent the rapid fade of the endothelium-dependent relaxation. The endothelium-independent relaxation induced by nitric oxide also faded more quickly in diabetic vessels; this impairment was less pronounced in the presence of superoxide dismutase. These results suggest that the transient nature of the endothelium-dependent relaxation is more marked in diabetic rat aorta as a result of an enhanced accumulation of superoxide anion.

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Ayurveda Body–Mind Constitutional Types and Role of Yoga Intervention Among Type 2 Diabetes Mellitus Population of Chandigarh and Panchkula Regions

Annals of Neurosciences ◽

10.1177/09727531211000040 ◽

2021 ◽

pp. 097275312110000

Author(s):

Madhava Sai Sivapuram ◽

Vinod Srivastava ◽

Navneet Kaur ◽

Akshay Anand ◽

Raghuram Nagarathna ◽

...

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Lipid Profiles ◽

Control Groups ◽

Yoga Intervention ◽

Positive Effects ◽

Study Results ◽

Significant Difference ◽

And Control

Background: Type 2 diabetes needs a better understanding of etiological factors and management strategies based on lifestyle and constitutional factors, given its high association rate with many cardiovascular, neurological disorders, and COVID-19 infection. Purpose: The present study was undertaken to investigate the effect of Diabetes-specific integrated Yoga lifestyle Protocol (DYP) on glycemic control and lipid profiles of diabetic adults. Along with the DYP intervention, the individuals residing in Chandigarh and Panchkula union territories in the northern part of India were assessed for Ayurveda-based body–mind constitutional type. Ayurveda describes body–mind constitution as “ prakriti,” which has been discussed from two angles, namely physiological and psychological as body and mind are correlated. Methods: Cluster sampling of waitlist control study subjects was used as the sampling method for the study. A total of 1,215 registered subjects (81 diabetic) responded in randomly selected clusters in Chandigarh and Panchkula. Ayurveda physicians did Ayurveda body–mind constitutional assessment called prakriti assessment (physiological body–mind constitution assessment) in 35 participants (23 diabetic, 12 prediabetic) as a part of the study. Results: A group of 50 subjects was randomly selected for yoga intervention out of 81 diabetes mellitus adults, and 31 subjects were enrolled as waitlist controls. A significant decrease in the glycosylated hemoglobin levels from 8.49 ± 1.94% to 7.97 ± 2.20% in the intervention group was noticed. The lipid profiles of the DYP intervention and control groups were monitored. Three-month follow-up results of lipid profile diagnostic tests in intervention and control groups showed a significant difference between the two groups ( P < 0.05). Most diabetic and prediabetic individuals were found to have pitta dosha ( pitta controls all heat, metabolism, and transformation in the mind and body) as dominant constitution type. Conclusion: The study results demonstrated significant positive effects of yoga in diabetic individuals. This study has indicated the evidence for the safety and efficacy of the validated DYP for community-level interventions to prevent maladies like brain damage and stroke.

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The Antioxidant Effect of Curcumin and Rutin on Oxidative Stress Biomarkers in Experimentally Induced Periodontitis in Hyperglycemic Wistar Rats

Molecules ◽

10.3390/molecules26051332 ◽

2021 ◽

Vol 26 (5) ◽

pp. 1332

Author(s):

Gilda M. Iova ◽

Horia Calniceanu ◽

Adelina Popa ◽

Camelia A. Szuhanek ◽

Olivia Marcu ◽

...

Keyword(s):

Oxidative Stress ◽

Diabetes Mellitus ◽

Diabetic Rats ◽

Gingival Tissue ◽

Control Group ◽

Albino Rats ◽

Oxidative Stress Biomarkers ◽

Significant Difference ◽

The Impact ◽

Experimentally Induced

Background: There is a growing interest in the correlation between antioxidants and periodontal disease. In this study, we aimed to investigate the effect of oxidative stress and the impact of two antioxidants, curcumin and rutin, respectively, in the etiopathology of experimentally induced periodontitis in diabetic rats. Methods: Fifty Wistar albino rats were randomly divided into five groups and were induced with diabetes mellitus and periodontitis: (1) (CONTROL)—control group, (2) (DPP)—experimentally induced diabetes mellitus and periodontitis, (3) (DPC)—experimentally induced diabetes mellitus and periodontitis treated with curcumin (C), (4) (DPR)—experimentally induced diabetes mellitus and periodontitis treated with rutin (R) and (5) (DPCR)—experimentally induced diabetes mellitus and periodontitis treated with C and R. We evaluated malondialdehyde (MDA) as a biomarker of oxidative stress and reduced glutathione (GSH), oxidized glutathione (GSSG), GSH/GSSG and catalase (CAT) as biomarkers of the antioxidant capacity in blood harvested from the animals we tested. The MDA levels and CAT activities were also evaluated in the gingival tissue. Results: The control group effect was statistically significantly different from any other groups, regardless of whether or not the treatment was applied. There was also a significant difference between the untreated group and the three treatment groups for variables MDA, GSH, GSSG, GSH/GSSG and CAT. There was no significant difference in the mean effect for the MDA, GSH, GSSG, GSH/GSSG and CAT variables in the treated groups of rats with curcumin, rutin and the combination of curcumin and rutin. Conclusions: The oral administration of curcumin and rutin, single or combined, could reduce the oxidative stress and enhance the antioxidant status in hyperglycemic periodontitis rats.

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

Canadian Journal of Physiology and Pharmacology ◽

10.1139/cjpp-2017-0055 ◽

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.

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Regression of gestational diabetes induced cardiomegaly in offspring of diabetic rat

Acta Cirurgica Brasileira ◽

10.1590/s0102-86502009000400002 ◽

2009 ◽

Vol 24 (4) ◽

pp. 251-255 ◽

Cited By ~ 1

Author(s):

Honório Sampaio Menezes ◽

Cláudio Galeano Zettler ◽

Alice Calone ◽

Jackson Borges Corrêa ◽

Carla Bartuscheck ◽

...

Keyword(s):

Body Weight ◽

Wistar Rats ◽

Weight Ratio ◽

Diabetic Rats ◽

Heart Weight ◽

Diabetic Rat ◽

Control Group ◽

Computer Assisted ◽

Significant Difference ◽

Levene Test

PURPOSE: To compare body weight and length, heart weight and length, heart-to-body weight ratio, glycemia, and morphometric cellular data of offspring of diabetic rats (ODR) and of normal rats (control). METHODS: Diabetes was induced in 3 pregnant Wistar rats, bearing 30 rats, on the 11th day after conception by intraperitoneal injection of 50 mg/kg of streptozotocin. Six normal pregnant Wistar rats, bearing 50 rats, made up the control group. Morphometric data were obtained using a scale for the weight, length, heart and body measurements. Morphometric cellular data were obtained by a computer assisted method applied to the measurements of myocytes. Statistical analysis utilized Student's t-test, ANOVA and Levene test. RESULTS: Control offspring had greater mean body weight and length than offspring of diabetic rats (p < 0.001). Heart weight and length and heart-to-body ratios of newborn rats differed between groups at birth (p < 0.001), but showed no difference at 21 days. Mean nuclei area and perimetric value of the myocytes decrees throughout the first 21 days of life (p < 0.01) in the diabetic group. CONCLUSIONS: Heart hypertrophy on the offspring of diabetic rats at birth was demonstrated by the significant difference between the groups. After the eleventh day, no difference was found, which confirmed regression of cardiomegaly. The significant difference between the first and the 21th day of life, for nuclei area feature, demonstrate regression of cardiac hypertrophy in the offspring of diabetic rats.

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EFFECT OF FAMILY PSYCHOEDUCATION ON CAREGIVER SUPPORT IN THE TREATMENT OF PATIENTS WITH TYPE II DIABETES MELLITUS

Belitung Nursing Journal ◽

10.33546/bnj.342 ◽

2018 ◽

Vol 4 (1) ◽

pp. 112-119

Author(s):

Andika Siswoaribowo ◽

Mateus Sakundarno ◽

Muhammad Mu’in

Keyword(s):

Diabetes Mellitus ◽

T Test ◽

Control Group ◽

P Value ◽

Family Psychoeducation ◽

Control Group Design ◽

Caregiver Support ◽

Significant Difference ◽

Patients With Diabetes ◽

And Control

Background: Diabetes Mellitus is a chronic disease that requires treatment for long periods of time so it can cause physical and psychological problems for sufferers and families (caregiver). Caregiver's role is expected to provide support for people with diabetes mellitus. Family psychoeducation is a strategy that can be applied for caregiver in overcoming problems that arise during the treatment of patients with diabetes mellitus.Objective: This study aims to determine the effect of family psychoeducation on caregiver support in the treatment of patients with diabetes mellitus type II.Methods: This research used a quasi experiment with pre-test post-test control group design. A total of 46 caregivers and patients with diabetes mellitus were recruited puposively, with 23 respondents assigned in the experiment and control group. Caregiver support scale was used to measure caregiver support, and Hensarling Diabetes Family Support Scale (HDFSS) for measuring perception of patients toward the treatment of caregiver. Data were analyzed using paired t-test and independent t-test. Results: Findings showed there was an increase of caregiver knowledge from 5.39 to 9.09 and an improvement of caregiver treatment from 40.30 to 67.04 after given family psychoeducation. There was a significant difference of caregiver support in the experimental and control group with p-value <0.001 (<0.05).Conclusion: Family psychoeducation can increase caregiver support in the treatment of diabetes mellitus patients. The intervention can be one of nurses interventions in the empowerment of family in improving the treatment of chronic diseases, particularly in diabetes mellitus.

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

International Journal of Reproductive BioMedicine ◽

10.18502/ijrm.v17i6.4810 ◽

2019 ◽

Author(s):

Abbas Bakhteyari ◽

Yasaman Zarrin ◽

Parvaneh Nikpour ◽

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.

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Effect of Diabetes Education Program on Gestational Diabetes Mellitus Knowledge Among Diabetic Pregnant Women: An Experimental Study

10.21203/rs.3.rs-112894/v1 ◽

2020 ◽

Author(s):

Uchenna Cosmas Ugwu ◽

Osmond Chukwuemeka Ene

Keyword(s):

Diabetes Mellitus ◽

Gestational Diabetes ◽

Gestational Diabetes Mellitus ◽

Pregnant Women ◽

Education Program ◽

Diabetes Education ◽

Control Groups ◽

Significant Difference ◽

And Control ◽

Experimental Group

Abstract Background: Gestational diabetes mellitus (GDM) is a disease condition present during pregnancy and if not properly managed would have severe effect on the maternal and neonatal health. This research determined the effect of diabetes education program (DEP) on gestational diabetes mellitus knowledge (GDMK) among diabetic pregnant women (DPW) and significant differences within groups.Methods: This study was based on a pretest – posttest measures of experimental research design involving experimental (n=110) and control (n=110) groups. A total of 220 DPW were purposively recruited from public hospitals in Nigeria between October and December 2019. The DEP was delivered to DPW in experimental group. The Gestational Diabetes Mellitus Knowledge Questionnaire (GDMKQ) of 0.774 was used for data collection. The statistical analysis was completed using IBM SPSS version 22. Results: The results revealed that no statistically significant difference existed on GDM history (P=0.801>0.05), smoking habit (P=0.0615>0.05), parity status (P=0.503>0.05), and level of education (P=0.720>0.05), while difference was observed on alcohol status (P=0.011<0.05), and age by birth (P=0.009<0.05). Also, while no significant difference existed between the DPW in the treatment and control groups on GDMK pretest measures (P=0.901>0.05), difference existed between the DPW in the intervention and control groups on GDMK posttest scores (P=0.026<0.05). Also, the higher percentage score (78%) of DPW in the experimental group in the posttest GDMK measures which is higher than the score in the pretest measures (55%) of the same group were indications that DEP has significant effect on GDMK among DPW.Conclusion: This demonstrates that reliable interventions are effective in combating pregnancy-related complications. This requires collaborative efforts by concerned bodies to combat notable complications during pregnancy using reliable intervention.Trial Registration: In retrospect, the Pan African Clinical Trial Registry documented the study with registration trial code (Trial No.: PACTR201903003187005)

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Exogenous Angiotensin I Metabolism in Aorta Isolated from Streptozotocin Treated Diabetic Rats

Journal of Diabetes Research ◽

10.1155/2016/4846819 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10

Author(s):

P. P. Wołkow ◽

B. Bujak-Giżycka ◽

J. Jawień ◽

R. Olszanecki ◽

J. Madej ◽

...

Keyword(s):

Diabetes Mellitus ◽

Vascular Complications ◽

Rat Aorta ◽

Diabetic Rats ◽

Diabetic Rat ◽

Classical Pathway ◽

Ang Ii ◽

Liquid Chromatography Mass Spectrometry ◽

Angiotensin I ◽

Ang Iv

Purpose. Products of angiotensin (ANG) I metabolism may predispose to vascular complications of diabetes mellitus. Methods. Diabetes was induced with streptozotocin (75 mg/kg i.p.). Rat aorta fragments, isolated 4 weeks later, were pretreated with perindoprilat (3 μM), thiorphan (3 μM), or vehicle and incubated for 15 minutes with ANG I (1 μM). Products of ANG I metabolism through classical (ANG II, ANG III, and ANG IV) and alternative (ANG (1–9), ANG (1–7), and ANG (1–5)) pathways were measured in the buffer, using liquid chromatography-mass spectrometry. Results. Incubation with ANG I resulted in higher concentration of ANG II (P = 0.02, vehicle pretreatment) and lower of ANG (1–9) (P=0.048, perindoprilat pretreatment) in diabetes. Preference for the classical pathway is suggested by higher ANG III/ANG (1–7) ratios in vehicle (P=0.03), perindoprilat (P=0.02), and thiorphan pretreated (P=0.02) diabetic rat. Within the classical pathway, ratios of ANG IV/ANG II (P=0.01) and of ANG IV/ANG III (P=0.049), but not of ANG III/ANG II are lower in diabetes. Conclusions. Diabetes in rats led to preference toward deleterious (ANG II, ANG III) over protective (ANG IV, ANG (1–9), and ANG (1–7)) ANG I metabolites.

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The ability of active fraction from Kappaphycus alvarezii (Doty) Doty Ex.P.C.Silva to Decrease Glucose Levels inhibit advanced Glycation End-Products (AGEs) Formation and RAGE (AGER) Gene Expression in Diabetic Rats

10.21203/rs.3.rs-20659/v1 ◽

2020 ◽

Author(s):

Mae Sri Hartati Wahyuning ◽

Evy - Yulianti ◽

Sunarti - Sunarti

Keyword(s):

Gene Expression ◽

Blood Glucose ◽

Kappaphycus Alvarezii ◽

Glycated Albumin ◽

Diabetic Rats ◽

Male Rats ◽

Diabetic Rat ◽

Active Fraction ◽

Glucose Levels ◽

Significant Difference

Abstract Background. Kappaphycus alvarezii (Doty) Doty ex P.C.Silva is a widely used seaweed that has antioxidant and antiglycation activities. The purpose of this study was to examine the ability of active fraction from Kappaphycus alvarezii to decrease glucose level and inhibit glycation process. Methods. This study used bioassay-guided fractionation through three stages of the extraction, partition, and fractionation processes that were monitored using Thin Layer Chromatography and BSA-Glucose test. Inhibition of glycation was known by calculating percentage of inhibition and IC50. Selected active fraction was used for in vivo tests using 24 Wistar male rats. Measurement of glucose levels used GOD-PAP method, while levels of glycated albumin (GA) and Nε- (carboxymethyl) lysine (CML) were measured using ELISA. Analysis of RAGE gene expression used qPCR. Results Glycation test showed a significant difference (p < 0.05) between all treatments. Chloroform extract showed higher percentage of inhibition (62.4 ± 3.45%) with lower IC50 (0.33 ± 0.01 mg/ml) compared to methanol extract (0.52 ± 0.03 mg/ml). Methanol-soluble extracts had a higher percentage of inhibition (51.10 ± 1.64%) with IC50 0.45 ± 0.05 mg/ml compared to methanol-insoluble extract (1.25 ± 0.05 mg/ml). Fraction II had a higher percentage of inhibition (53.37 ± 1.92%) with IC50 0.12 ± 0.01 mg/ml compared to other fractions. Selected active fraction reduced blood glucose by 1.3% and 5.2% and CML levels by 50.6% and 42.4% at concentrations of 0.17 and 0.255 mg/ml in diabetic rats. RAGE gene expression was lower in the diabetic rat groups treated with active fraction compared to untreated diabetic group. Conclusions The active fraction has ability for reducing blood glucose, antiglycation, or reducing CML levels, and RAGE gene expression.

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