Diabetic Control Group Research Articles

Gastroprotective evaluation of Medicago sativa L. (Fabaceae) on diabetic rats

Traditional uses for the plant Medicago sativa (M. sativa) (Alfalfa) (Family: Fabaceae) include liver protection, antioxidant activity, and the treatment of bleeding and digestive issues. This study aims to assess the effect of ethanol extract of M. sativa (EEMS) on experimental-induced ulcers in diabetic rats. By pylorus ligation and ethanol administration, gastric ulcers were induced in diabetic rats. Five groups each consisting of six rats in each model were used. All other groups except Group I were made diabetic by giving rats alloxan (140 mg/kg i.p.). Vehicles were given to Group I (normal control) and Group II (diabetes control) rats. Group III (positive control) received ranitidine 50 mg/kg, and Group IV and V received EEMS at doses of 100 and 400 mg/kg, respectively. In the pylorus ligation and ethanol-induced stomach ulcer model of rats, the findings demonstrated that EEMS (100 mg/kg) showed a decreased ulcer index of 2.01 ± 0.41 and was found statistically significant against the diabetes control group (p < 0.001) as well as, an ulcer index of 0.68 ± 0.22 by EEMS (400 mg/kg) with a significant reduction in the ulcer index (p < 0.001). EEMS (100 and 400 mg/kg) reduce free acidity by 13.16 ± 0.65 mEq/L and 9.83 ± 0.30 mEq/L, respectively. EEMS also showed a protective impact on the liver and kidneys of diabetic rats. Antihyperglycemic action was also discovered in diabetic animals. The findings of the current investigation demonstrated that ethanolic extract of M. sativa possesses anti-ulcer activity in diabetic rats. Ethanolic extract of M. sativa may be a treatment option for stomach ulcers that also have diabetes.

Alpha lipoic acid improves memory and antioxidant enzymes activity in diabetic Wistar rats

Diabetes mellitus (DM) and oxidative stress are among the leading causes of memory loss and dementia. Dietary supplements have been used to manage many disorders. This research aimed to determine the effect of alpha lipoic acid (ALA) on memory and oxidative stress in diabetic Wistar rats. 30 rats were grouped into six (5 in each). Diabetes was induced using a high-fat diet followed by a single low dose of streptozotocin (40 mg/kg) intraperitoneally. Group I served as normoglycemic control (1 mL/kg normal saline), while groups II, III, IV, V, and VI were diabetic and received 1 mL/kg at normal saline, glibenclamide at 1 mg/kg, ALA at 100 mg/kg, 200 mg/kg and 400 mg/kg respectively for 21 days. Blood glucose level was determined before and after treatment. Long-term and recognition memory were determined using novel object recognition tasks (NORT). Brain tissues were used for antioxidant enzymes. The result obtained showed that at 400 mg/kg after 21 days of administration of ALA, long-term memory and recognition ability were increased significantly (45.65±3.43s and 83.77±1.49%) compared to the diabetic control (26.24 ± 3.81s and 65.09 ± 2.52%) respectively. Antioxidant enzymes’ levels were increased significantly in the group VI including catalase (1.76±0.02 IU/mg) superoxide dismutase (1.02±0.71 IU/mg) and reduced glutathione (91.08±3.49 µg/mL) compared to the diabetic control group (0.84±0.03 IU/mg, 0.49±0.03 IU/mg and 51.64±0.87 µg/mL) respectively. The findings suggest that ALA has antioxidant activity and improves memory in diabetic Wistar rats.

Fluoride-modified implant surfaces improves osseointegration in the tibias of rats with induced diabetes.

This study evaluated the influence of a fluoride-modified titanium surface on osseointegration in rats with induced diabetes. One hundred and eighty rats were randomly allocated into 3 groups with 60 animals each: Control group (C): Animals without diabetes; Diabetes Group (D): Animals with uncontrolled induced diabetes; Controlled Diabetes Group (CD): Animals with diabetes induced controlled by the insulin administration. Diabetes was induced by streptozotocin injection. Each animal received 2 implants in the proximal tibial metaphysis, one with the machined surface (M) and the other one with a fluoride-modified titanium surface (F), after 4 weeks of induction of diabetes. The animals were submitted to euthanasia 2, 4, and 6 weeks after the implant placement (n = 20 animals/group). The osseointegration was evaluated by the implant removal torque test and the histometric analysis of the non-decalcified histological sections: 1) Contact bone/implant (%BIC); 2) Bone tissue area between implant threads (%BBT). Implants with F surface showed a higher removal torque than implants with surface M in all groups. There was no difference in %BIC between the groups regardless of the surface used. The F surface showed a tendency to present higher %BBT values for the 3 evaluation periods in the D group. The fluoride-modified implant surface has no impact on the %BIC and %BBT. However, the fluoride-modified implant surface increases the locking of the implants with the bone. The hyperglycemia was associated with lower removal torque values despite the surfaces of the implant used.

The Potential Hepatoprotective Effect of Vaccinium arctostaphylos L. Fruit Extract in Diabetic Rat.

Vaccinium arctostaphylos has traditionally been employed in Iranian folk medicine to treat diabetes. However, the precise molecular mechanisms underlying its antidiabetic properties remain incompletely understood. The current experiment intended to explore the modulatory effects of V. arctostaphylos fruit ethanolic extract (VAE) on biochemical and molecular events in the livers of diabetic rats. In this experimental study, male Wistar rats were randomly assigned to four groups: normal control, normal rats with VAE treatment, diabetic control, and diabetic rats with VAE treatment. Following 42 days of treatment, the impact of VAE on diabetes-induced rats was assessed by measuring various serum biochemical parameters, including insulin, free fatty acids (FFA), tumor necrosis factor-α (TNF-α), reactive oxygen species (ROS), and adiponectin levels. The activities of hepatic carbohydrate metabolic enzymes and glycogen content were determined. Additionally, expression levels of selected genes implicated in carbohydrate/lipid metabolism and miR-27b expression were evaluated. H and E-stained liver sections were prepared for light microscopy examination. Treatment with VAE elevated levels of insulin and adiponectin that reduced levels of FFA, ROS, and TNF-α in the serum of diabetic rats. VAE-treated rats exhibited increased activities of hepatic glucokinase (GK), glucose-6-phosphate dehydrogenase (G6PD), and glycogen concentrations, in conjunction with decreased activities of glucose-6-phosphatase (G6Pase) and fructose-1,6-bisphosphatase (FBPase). Furthermore, VAE significantly upregulated the transcription levels of hepatic insulin receptor substrate 1 (Irs1) and glucose transporter 2 (Glut2), while considerably downregulated the expression of peroxisome proliferator-activated receptor gamma (Pparg) and sterol regulatory element-binding protein 1c (Srebp1c). VAE remarkably enhanced the expression of miR27-b in the hepatic tissues of diabetic rats. Abnormal histological signs were dramatically normalized in diabetic rats receiving VAE compared to those in the diabetic control group. Our findings underscore the hypoglycemic and hypolipidemic activities of V. arctostaphylos and assist in better comprehension of its antidiabetic properties.

Effect of Tangshen formula on the remodeling of small intestine and colon in Zucker diabetic fatty rats

Background and aimPrevious study have demonstrated that Tangshen Formula (TSF) could attenuate colonic histomorphological remodeling in the diabetic rat model induced by high fat diet plus low dosage streptozotocin (STZ). However, it is not clear whether TSF has same effect on small intestine and the effect on biomechanical properties of bowel. The aim of this study is to investigate the effect of TSF on histomorphological and biomechanical remodeling of small intestine and colon by using Zucker Diabetic Fatty (ZDF) Rat model. Materials and methodsZDF rats (obese fa/fa) with blood glucose higher than 11.7 mmol/L were divided into ZDF group (diabetic control group) and ZDF + TSF group (TSF treatment group), the later were intragastrically administered TSF. The ZDF rats (lean fa/+) were served as normal control (ZL) group. The rats in the ZL and ZDF groups were administered with saline. The experimental period covered from 8 weeks to 24 weeks. At the end of experiment, the ileal and colonic segments were studied in vitro. The histomorphometry and biomechanical parameters were measured. ResultsCompared with ZL group histomorphologically, the wet weight per unit length, wall thickness, wall area and fractions of total and type I and type III collagen in different layers for both ileum and colon increased in ZDF group. Those increasing parameters were partially inhibited in ZDF + TSF group. Compared with ZL group biomechanically, ZDF and ZDF + TSF groups had smaller opening angle and residual strain in ileum, and bigger opening angle and residual strain in colon. Whereas the wall became softer in circumferential direction and stiffer in longitudinal direction for both ileum and colon. However, no difference of biomechanical parameters was found between ZDF and ZDF + TSF groups. ConclusionThe histomorphological and biomechanical remodeling of ileum and colon were happened in ZDF rats （obese fa/fa）. TSF could partly attenuate ileal and colonic histomorphological remodeling rather than biomechanical remodeling.

Atherogenic Indices in Type 2 Diabetic Iraqi Patients and Its Association with Cardiovascular Disease Risk

Background: Diabetes is a serious risk factor for atherosclerotic cardiovascular disease and an important cause of mortality. Dyslipidemia is commonly related to type 2 diabetes, and the atherogenic index of plasma is a strong marker to predict the risk of atherosclerosis and coronary heart disease. Objective: To study the association of atherogenic indices lipids in type 2 diabetic Iraqi patients with cardiovascular disease. Patients and Methods: This clinical study was conducted at Baghdad Teaching Hospital/ Medical City-Baghdad from October 2022 to February 2023. Sixty type 2 diabetic patients were recruited for this study: 30 patients with cardiovascular disease and 30 without cardiovascular disease. Their ages were between 40-55 years. Another 30 healthy individuals were selected as a control group. Results: There were considerable rises in glycemic and lipid investigations in diabetic patients with cardiovascular disease compared to those without cardiovascular disease and the control group. The present results show higher levels of lipid ratios in diabetic patients with cardiovascular disease. The results also revealed high levels of non-high-density lipoprotein cholesterol for diabetic patients with cardiovascular disease (241.8±12.24 mg/dL) versus (150.1±7.12 and 68.9±5.1 mg/dL) for those without cardiovascular disease and the controls group respectively. The atherogenic index of plasma in diabetic patients with cardiovascular disease compared to diabetic and healthy control groups were (0.8±0.09) versus (0.7±0.03 and 0.2±0.08) respectively. There was a significant correlation between the atherogenic index of plasma and anthropometric factors, glycemic and lipid profile with their ratios in diabetic patients with and without cardiovascular disease. Conclusions: The results of this study confirm that the lipid indices are risk indicators of glycemic control with higher prognostic value than traditional factors. So, non-high-density lipoprotein cholesterol and atherogenic index of plasma can be used as a significant predictor of glycemic control. Received: Feb., 2023 Accepted: May, 2023 Published: Oct. 2023

The Effect of Eight Weeks of High-Intensity Interval Training with L-Cysteine Consumption on CRP and TNF-α in Heart Tissue of Young Rats with Type 2 Diabetes

Background: This study aimed to investigate the effect of 8-weeks of high-intensity interval training (HIIT) with L-cysteine consumption on tumor necrosis factor-alpha (TNF-α) and C-reactive protein (CRP) of heart tissue in young rats with type 2 diabetes. Methods: The statistical population of the present study consisted of young (4 months) rats with type 2 diabetes. Ten rats were selected as a healthy group, and 40 rats became diabetic. Diabetic rats were randomly divided into four groups: diabetes control, diabetics with training, diabetics with supplements, and diabetics with training+supplement. Moreover, high-intensity interval exercises were performed 3 days a week for 8 weeks, and 500 micromoles of L-cysteine were administered daily. Results: The training+supplement group had significantly higher TNF-α levels compared to the diabetic control group (P=0.002). The diabetic control group (P=0.001) and training group (P=0.001) had higher TNF-α levels compared to the healthy control. The supplement group had significantly less TNF-α compared to the diabetic control group (P=0.003), while the supplement group (P=0.019) and the training+supplement group (P=0.013) had lower TNF-α levels compared to the training group. Moreover, the training+supplement group had lower CRP levels compared to the diabetic control group (P=0.001), while the diabetic control (P=0.001), exercise (P=0.002), and supplement group (P=0.031) had higher CRP levels compared to the healthy control. Moreover, the training group (P=0.038) and the supplement group (P=0.002) had lower CRP compared to the diabetic control group. Furthermore, the training+supplement group had a lower CRP level compared to the training group (P=0.03). Conclusion: HIIT along with the L-cysteine consumption reduced TNF-α and CRP in the heart tissue of diabetic rats.

Impacts of trelagliptin and remogliflozin alone and in combination with Alpha Lipoic Acid on cardiac function in streptozotocin-induced diabetes mellitusinrats.

This study investigated the effects of trelagliptin and remogliflozin, alone and in combination with alpha lipoic acid (ALA), on cardiac biomarkers in diabetic cardiomyopathy (DCM). We aimed to assess the management of glucotoxicity consequences in streptozotocin-induced diabetic rats by measuring serum levels of pharmacologically active endogenous ligands. Forty-eight male rats were divided into different treatment groups, including negative control, positive control, and four experimental groups. After inducing diabetes, the rats were treated for 28 days, and serum levels of biomarkers associated with oxidative stress (malondialdehyde and thioredoxin-interacting protein), inflammation (nuclear factor NF-kappa-B p105 and lipoprotein-associated phospholipase A2), and myopathy (neprilysin and high selective cardiac troponin T) were measured. Immunohistochemical analysis of heart cells was also performed. The results showed that inducing hyperglycemia increased serum glucose levels and biomarkers associated with DCM. However, all treatment groups exhibited a significant decrease in these biomarkers and an increase in insulin levels compared to the diabetic control group. The groups receiving combination therapy with ALA showed greater improvements in cardiac biomarkers compared to the individual treatments. The immunohistochemical analysis supported these findings by demonstrating a reduction in the percentage area of cathepsin B, a protein involved in DCM pathophysiology. In conclusion, supplementing the base treatments with ALA showed promise in enhancing cardiac biomarkers associated with DCM. The combination of trelagliptin, remogliflozin, and ALA may have additional clinical value in managing DCM by targeting oxidative stress, inflammation, and glucotoxicity. However, further research is needed to validate these findings and explore their potential clinical applications.

Exploring mesoporous silica nanoparticles as oral insulin carriers: In-silico and in vivo evaluation

The advancements in nanoscience have brought attention to the potential of utilizing nanoparticles as carriers for oral insulin administration. This study aims to investigate the effectiveness of synthesized polymeric mesoporous silica nanoparticles (MSN) as carriers for oral insulin and their interactions with insulin and IR through in-silico docking. Diabetic rats were treated with various MSN samples, including pure MSN, Amin-grafted MSN/PEG/Insulin (AMPI), Al-grafted MSN/PEG/Insulin (AlMPI), Zinc-grafted MSN/PEG/Insulin (ZNPI), and Co-grafted MSN/PEG/Insulin (CMPI). The nanocomposites were synthesized using a hybrid organic-inorganic method involving MSNs, graphene oxide, and insulin. Characterization of the nanocomposites was conducted using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). In vivo tests included the examination of blood glucose levels and histopathological parameters of the liver and pancreas in type 1 diabetic rats. The MSN family demonstrated a significant reduction in blood glucose levels compared to the diabetic control group (p < 0.001). The synthesized nanocomposites exhibited safety, non-toxicity, fast operation, self-repairing pancreas, cost-effectiveness, and high efficiency in the oral insulin delivery system. In the in-silico study, Zn-grafted MSN, Co-grafted MSN, and Al-grafted MSN were selected. Docking results revealed strong interactions between MSN compounds and insulin and IR, characterized by the formation of hydrogen bonds and high binding energy. Notably, Co-grafted MSN showed the highest docking scores of −308.171 kcal/mol and −337.608 kcal/mol to insulin and IR, respectively. These findings demonstrate the potential of polymeric MSN as effective carriers for oral insulin, offering promising prospects for diabetes treatment.

Effect of PENN-DIABEX, a novel polyherbal formulation, in high fat diet streptozotocin-induced diabetic rats

Diabetes, a chronic metabolic disorder affecting millions worldwide, presents a significant health challenge characterized by impaired glucose regulation and potential complications. This study examines the antidiabetic effects of a polyherbal formulation (PENN-DIABEX) prepared from five different medicinal plant extracts. The objective is to ascertain its efficacy in managing streptozotocin (STZ) induced diabetes in rats. To accomplish this, six distinct groups of rats were involved five with induced diabetes and one serving as a normal control. Among the diabetic groups, one received no treatment, functioning as the diabetic control group. The remaining three groups were administered PHF in three different doses while the 6th group was given metformin. On the last day of the experiment, all rats were sacrificed, and blood samples were taken in collecting tubes to analyze blood biochemical parameters. Additionally, tissue samples from the liver, kidney, and pancreas were preserved in formalin solution for subsequent histopathological activity. The results of the study revealed that treatment with PHF in diabetic rats led to a significant (P < 0.01) improvement in fasting blood glucose levels (FBG), glycated hemoglobin (HbA1c), and various biochemical markers including LFTs, RFTs, and lipid profiling. Furthermore, the histology of the liver, kidney, and pancreas indicated that the formulation did not induce any metabolic toxicity. Comparative analysis of the antidiabetic effects of PHF with those of metformin, revealed that the PHF showed better results than the standard drug. This suggests its potential utilization as a safer and alternative approach in the treatment of diabetes.

Hematological parameters in streptozotocin-induced diabetic rats and the effect of Rosa damascena Mills. extract

Introduction: Chronic inflammation is the primary factor contributing to the development of diabetes mellitus and its associated problems in affected patients. White blood cells are of significant importance in the degenerative mechanism of blood vessel walls in individuals with diabetes, ultimately leading to the development of atherosclerosis and initiating the rupture of unstable plaques, which subsequently causes thrombosis. Red roses contain anthocyanins, with cyanidin being the specific compound that demonstrates the greatest antioxidant action. The main aim of this study was to investigate the impact of various doses of ethanol extract derived from Rosa Damascena on hematological markers in rats with diabetes. Methods: This study used an experimental design with a randomized post-test-only control group. A total of twenty male Wistar rats were allocated into five distinct groups for the purpose of this study. The groups were categorized as follows: Healthy Control Group (HCG), Diabetes Group (DG), and Extract Group, which was further separated into three subgroups denoted as P1 (250 mg/kgBW), P2 (500 mg/kgBW), and P3 (1,000 mg/kgBW). The experimental groups received a single injection of streptozotocin at a dosage of 50 mg/kgBW to induce diabetes. Additionally, they were administered oral treatment of Rosa Damascena ethanolic extract for a duration of 2 weeks. Results: The group denoted as P2 has the lowest NLR, as seen by a mean value of 0.06. In contrast, the group administered with Metformin exhibited the lowest leukocyte value, with a mean of 7.98±6.0. Nevertheless, there are no substantial disparities in the remaining variables. Conclusion: The results of this study indicate that the ethanol extract obtained from Rosa Damascena did not have a statistically significant effect on the hematological parameters of rats with streptozotocin-induced diabetes.

Saponins from Momordica charantia exert hypoglycemic effect in diabetic mice by multiple pathways.

The antidiabetic activity of saponins extracted from Momordica charantia (MCS) on streptozotocin-induced diabetic mice was investigated in order to elucidate the mechanism of MCS for exerting hypoglycemic effects. Saponins were first extracted from M. charantia L. and their composition was analyzed. The diabetic Kunming mice were fed low-dose saponins from M. charantia L. and high-dose MCS, using normal mice and diabetic mice as controls. Body weight, blood glucose level, oral glucose tolerance, serum C-peptide level, hepatic antioxidant capacity, hepatic glycogen and hexokinase in liver tissues, serum blood lipid level, and alpha-glucosidase activity in small intestines were measured, and microstructure of pancreatic islet was analyzed. The results showed that the total content of seven triterpenoid compounds in MCS was 18.24 μg/mg, with Momordicoside K having the highest content at 11.66 μg/mg. Diabetic mice treated with MCS at 100 and 200 mg/kg body weight daily for 30 days showed a maximum glucose reduction (p < .05) of 12.63% and 26.47%, respectively. MCS significantly decreased levels of postprandial hyperglycemia, serum lipid, α-glucosidase activity, and liver malondialdehyde. Additionally, levels of serum C-peptide and liver glycogen, as well as hexokinase and antioxidant enzyme activity, were significantly increased compared to the diabetic control groups. Histopathological results showed that MCS markedly reduced degenerative changes in islet β-cells. It is concluded that MCS exerts antidiabetic effects by improved hypoglycemic, hypolipidemic, and antioxidant effects, increased hexokinase activity and glycogen synthesis, and enhanced reparative effects on the histological architecture and insulin secretion function of the pancreas.

Effects of Vitamin D3 Supplementation and Aerobic Training on Autophagy Signaling Proteins in a Rat Model Type 2 Diabetes Induced by High-Fat Diet and Streptozotocin.

The aim of this study was to investigate the combined effects of vitamin D3 supplementation and aerobic training on regulating the autophagy process in rats with type 2 diabetic induced by a high-fat diet and streptozotocin. A total of 40 Wistar rats were divided into five groups: normal control (NC), diabetic control (DC), diabetic + aerobic training (DAT), diabetic + vitamin D3 (DVD), and diabetic + aerobic training + vitamin D3 (DVDAT). The rats underwent eight weeks of aerobic training with an intensity of 60% maximum running speed for one hour, along with weekly subcutaneous injections of 10,000 units of vitamin D3. The protein levels of different autophagy markers were assessed in the left ventricular heart tissue. The results showed that the protein levels of AMPK, pAMPK, mTOR, and pmTOR were significantly lower in the DC group compared to the NC group. Conversely, the levels of ULK, Beclin-1, LC3II, Fyco, and Cathepsin D proteins were significantly higher in the DC group. However, the interventions of aerobic training and vitamin D3 supplementation, either individually or in combination, led to increased levels of AMPK, pAMPK, mTOR, and pmTOR, and decreased levels of ULK, Beclin-1, LC3II, Fyco, and Cathepsin D (p < 0.05). Additionally, the aerobic capacity in the DAT and DVDAT groups was significantly higher compared to the NC, DC, and DVD groups (p < 0.05). These findings suggest that type 2 diabetes is associated with excessive autophagy in the left ventricle. However, after eight weeks of vitamin D3 supplementation and aerobic training, a significant reduction in excessive autophagy was observed in rats with type 2 diabetes.

Effect of Crocin on Pituitary-Testicle Hormonal Axis in Alloxan-Induced Diabetic Male Rats

Background and Objectives Diabetes mellitus is a metabolic disease which causes disorders in the reproductive system. Recent studies have revealed that the main components of saffron like crocin and safranal have several physiological effects on different biological systems. Given the role of crocin in the modulation of antioxidant defense system, this study aimed to determine the effect of crocin on pituitary-testicle hormonal axis in alloxan-induced diabetic male rats. Subjects and Methods In this experimental study, 28 Wistar male rats were allocated into 4 equal groups: control, diabetic control, and two diabetic groups treated with crocin at two concentrations. Induction of diabetes in the diabetic control and the diabetic groups treated with crocin was done by an intraperitoneal injection of 240 mg/kg alloxan. Crocin at concentrations of 50 and 100 mg/kg [0.5 ml] was intraperitoneally injected into the two diabetic groups for 25 days. Saline solution [0.5 ml] was injected into the animals in the control and diabetic control groups for 25 days. At the end of the treatment period, serum levels of LH, FSH, estrogen, testosterone and DHT were measured by ELISA. Statistical analysis was carried out using one-way ANOVA and Tukey post hoc test. P &lt;0.05 was considered statistically significant. Results Compared with the diabetic control group, administration of crocin at concentrations of 50 and 100 mg/kg significantly increased serum levels of LH, FSH, estrogen, and DHT testosterone in a dose-dependent manner [p&lt;0.05]. Conclusion The results show that by increasing the activity of pituitary-testicle hormonal axis, crocin improves hormonal disorders in diabetic rats.

Antihyperglycemic and Hypolipidemic Effect of Hydroalcoholic Extract of Dolichos lablab Linn in STZ induced Type 1 Diabetes Mellitus in Mice

Background: Traditional herbs have been used in the human healthcare system as medicines, foods, or spices from ancient times. Dolichos lablab is an Indian medicinal herb with a good source of nutrition, and has insulin-like proteins, thus can be employed in the cure of diabetes. Objective: This study aims to evaluate the lipids and blood glucose lowering effect of Dolichos lablab hydroalcoholic extract by using STZ-induced type 1 diabetes mellitus in-vivo model. Methods: Animals were divided into five groups including vehicle control, diabetic control, extract treated (200 &amp; 400 mg/kg), and standard group. All the treatment was continued for 14 days after the confirmation of diabetes. Food consumption, water intake, serum glucose, insulin, kidney function test, liver, and serum lipid profile were assessed to evaluate the antidiabetic potential of the plant. Results: Phytochemical analysis showed the presence of carbohydrates, alkaloids, flavonoids, protein, amino acids, and terpenoids. Extract treatment significantly diminished HbA1c, and blood glucose levels. In addition, an ameliorative effect on serum cholesterol, triglycerides, and lipoprotein was observed at 400 mg/kg/day dose. Moreover, blood urea nitrogen and hepatic SGPT were also reduced significantly with extract treatment. Conclusion: Therefore, the present study depicted that Dolichos lablab is a useful herb in diabetes management and possesses hypolipidemic potential.

Hypoglycemic effects of Stachys affinis Bunge in streptozotocin-induced diabetic mice

BACKGROUND: Stachys affinis Bunge (S. affinis) tubers are rich in carbohydrate with a large amount of stachyose which had been proven to have antidiabetic potential. OBJECTIVE: The present study aims to evaluate hypoglycemic effects of tuber extract of Stachys affinis in streptozotocin-induced diabetic mice. METHODS: The stachyose content of the extract was determined by UPLC. Diabetes was induced by the administration of single dose of streptozotocin (170 mg/kg). The hypoglycemic effects of the extract were evaluated by comparing fasting blood glucose level, glucose tolerance, insulin sensitivity between groups treated with the S. affinis tuber extract (at doses of 750 mg/kg and 1500 mg/kg) and diabetic control group over 28 days of treatment. RESULTS: The daily treatment with the extract at doses of 750 mg/kg and 1500 mg/kg significantly reduced fasting blood glucose level from 278.12 mg/dL to 127.50 mg/dL, and 238.97 mg/dL to 177.12 mg/dL (p &lt; 0.01), respectively. Besides, the treatment also improved the sensitivity of diabetic treated mice to insulin (P &lt; 0.05). CONCLUSION: The study revealed that the S. affinis tuber extract demonstrated significant hypoglycemic effects.

Antioxidant Effect of the Ethyl Acetate Extract of Potentilla indica on Kidney Mitochondria of Streptozotocin-Induced Diabetic Rats.

Diabetes mellitus (DM) is a metabolic disorder characterized by persistent hyperglycemia. This state may lead to an increase in oxidative stress, which contributes to the development of diabetes complications, including diabetic kidney disease. Potentilla indica is a traditional medicinal herb in Asia, employed in the treatment of several diseases, including DM. In this study, we investigated the antioxidant effect of the ethyl acetate extract of Potentilla indica both in vitro and on kidneys of streptozotocin-induced diabetic male rats. Firstly, phytochemicals were identified via UPLC-MS/MS, and their in vitro antioxidant capabilities were evaluated. Subsequently, male Wistar rats were assigned into four groups: normoglycemic control, diabetic control, normoglycemic treated with the extract, and diabetic treated with the extract. At the end of the treatment, fasting blood glucose (FBG) levels, creatinine, blood urea nitrogen (BUN), and uric acid were estimated. Furthermore, the kidneys were removed and utilized for the determination of mitochondrial reactive oxygen species (ROS) production, mitochondrial respiratory chain complex activities, mitochondrial lipid peroxidation, glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) activities. The in vitro findings showed that the major phytochemicals present in the extract were phenolic compounds, which exhibited a potent antioxidant activity. Moreover, the administration of the P. indica extract reduced creatinine and BUN levels, ROS production, and lipid peroxidation and improved mitochondrial respiratory chain complex activity and GSH-Px, SODk, and CAT activities when compared to the diabetic control group. In conclusion, our data suggest that the ethyl acetate extract of Potentilla indica possesses renoprotective effects by reducing oxidative stress on the kidneys of streptozotocin-induced diabetic male rats.

Effect of Aerobic Exercise Intervention on Renal Insulin Signaling Pathway in db/db Mice

Objective: To study the effects on insulin signaling pathway in db/db mice during aerobic exercise and discuss the related mechanisms. Methods: Ten BKS mice were selected as the quiet control group (WT group), and 20 BKS-db/db mice were randomly divided into two groups as the diabetic quiet control group (C group) and the diabetic simple exercise group (E group), with 10 mice in each group. The mice in E group were acclimatized to the low-intensity criterion (2~7m/min, 10min/day, 5 days/week) for one week, and then subjected to 8 weeks of aerobic endurance exercise training on a running platform (0° incline, 7~12m/min, 30~40min/day, 5 days/week), while the mice in groups WT and C were kept quietly. At the end of the experiment, the fasting blood glucose content, glucose tolerance, insulin tolerance of each group of mice were detected respectively, and the expression levels of AKT protein and insulin receptor protein were detected by Western Blot technique. Results: (1) Compared with the diabetic quiet control group (Group C), the glucose tolerance and insulin tolerance in the quiet control group (Group WT) showed significant changes (P＜0.05); in the diabetic simple exercise group (Group E), there was no significant change in glucose tolerance and insulin tolerance (P＞0.05). (2) Compared with the diabetic quiet control group (Group C), the expression level of insulin receptor protein was down-regulated (P&lt;0.05) and AKT protein expression was up-regulated (P&lt;0.05) in the diabetic simple exercise group (Group E); compared with the quiet control group (Group WT), the expression level of insulin receptor protein was increased (P&lt;0.05) and AKT protein was decreased (P&lt;0.05) in the diabetic quiet control group (Group C), expression level decreased (P&lt;0.05). Conclusion: Exercise alone could not improve insulin resistance in db/db mice; eight weeks of aerobic exercise improved and corrected renal insulin signaling pathway and alleviated renal insulin resistance in db/db mice.

The effects of coadministration of curcumin and vitamin E on the reproductive system of diabetic male rats; An experimental study

IntroductionDiabetes causes testicular damage due to oxidative stress. Nowadays, the use of vitamins and antioxidants is one of the common methods to treat this disease. Therefore, the aim of this study is to investigate the effect of single and combined administration of these two substances on the reproductive system of male diabetic rats. Method and materialsIn this study, 48 adult male Wistar rats weighing 250–270 grammes were divided into 6 groups: Control group, diabetic group, vehicle group, vitamin E, curcumin group, and vitamin E and curcumin group. The control group was the healthy group, and in the other groups, the rats were made diabetic by streptozotocin (60 mg/kg/ip). The vehicle group received 1 ml of olive oil, the vitamin E group (100 mg/kg/ip) received Vit.E, and the curcumin group (50 mg/kg/ip) received Cu. The group of rats received vitamin E and curcumin. At the end of the sixth week after treatment, blood was taken from the rats and biochemical analysis was performed to check the amount of malondialdehyde (MDA), LH hormones and serum testosterone, then the rats were killed and their testes and epididymides were removed. The weight of the testes and sperm parameters, the maturity of sperm nuclei and the integrity of their DNA were checked. The number of spermatogenic cells was determined by histological examination. ResultsThis study showed that diabetes caused a decrease in testicular weight, sperm count, motility, and viability, an increased percentage of sperm with immature nuclei, and an increased percentage of sperm with denatured DNA. In addition, diabetes decreased the average number of matogenic sperm, and biochemical results showed that diabetes increased the level of MDA and decreased the level of the hormones LH and testosterone. Treatment with vitamin E, curcumin and their combination improved all these parameters, and this improvement was significant in the Toam group. ConclusionCombined administration of vitamin E and curcumin in diabetic rats significantly improves sperm parameters, matogenic sperm count, and improves MDA levels, LH, and serum testosterone compared with separate treatment.

Effect of dapagliflozin against NAFLD and dyslipidemia in type 2 diabetic albino rats: possible underlying mechanisms.

The aim was to investigate the effect of dapagliflozin on non-alcoholic fatty liver disease and dyslipidemia in type 2 diabetic rats by studying the histopathological structure of the liver and detecting possible underlying mechanisms for this impact by evaluating the potential anti-inflammatory action of dapagliflozin. 100 albino rats were used in this work and divided into five equal groups: group I (Control group), group II (Control diabetic group), group III (was administered dapagliflozin, 0.75 mg/kg, p.o.), group IV (was administered dapagliflozin, 1.5 mg/kg, p.o.), and group V (was administered dapagliflozin, 3 mg/kg, p.o.). In our study, the total body weight, liver weight, liver index, blood glucose level, insulin level, insulin resistance, total cholesterol, triglycerides, liver enzymes, IL-1 β, and MDA were significantly higher in the control diabetic group than the normal group. The dapagliflozin reduced all the above variables significantly in a dose-dependent manner compared to the control diabetic group (p-value = 0.001 for all). Dapagliflozin may be a promising novel treatment strategy for treating T2DM-related non-alcoholic fatty liver disease (NAFLD), and dyslipidemia where it possesses anti-oxidative, anti-inflammatory and anti-dyslipidemic effects.