Liver Of Diabetic Rats Research Articles

Effect of Hydroxytyrosol on Prdx6 Expression in Diabetic Rat Liver

Aim: Oxidative stress caused by hyperglycemia, which is the most important complication of diabetes mellitus, causes liver damage. Hydroxytyrosol is a polyphenolic compound abundant in olive oil that protects the liver against oxidative damage. Peroxiredoxin 6 (Prdx6) is an anti-oxidative enzyme known to exist in the liver. The aim of this study was to investigate the effect of hydroxytyrosol on Prdx6 expression in diabetes-induced liver injury.
 Material and Methods: Male Wistar rats were grouped into four as the control group (n=10), hydroxytyrosol group (n=10), streptozotocin group (n=10), and hydroxytyrosol+streptozotocin group (n=10). Blood glucose levels of the animals were measured after streptozotocin injection and at the end of the experiment. The general structure of the liver was examined with a hematoxylin-eosin stain. Prdx6 protein expression was determined with an immunohistochemical method.
 Results: In the streptozotocin+hydroxytyrosol group, blood glucose level was found to be lower when compared with the streptozotocin group (p

Effects of Caraway and (S)-(+)-carvone Extract on the Expression of Genes Coding Key Glycolytic Enzymes in Streptozotocin-induced Diabetic Rats

Background: Diabetes mellitus is a metabolic disorder causing dysfunctional regulation of carbohydrate metabolism and contributing to multiple serious health challenges worldwide. Aims: This research explores the effect of caraway hydroalcoholic extract and (S)-(+)-carvone on the transcription of genes coding for key glycolytic enzymes in the liver of the diabetic rat treated with streptozotocin (STZ). Methods: In this experimental study, diabetes was established in four groups of rats by injecting 45 mg/kg of STZ intraperitoneally. Further normal rats that were not injected formed the control group. Over four weeks, the effects of caraway hydroalcoholic extract (150 and 250 mg/kg) and carvone (100 mg/kg) were evaluated using PCR and histopathological evaluation, specifically in the form of effects on the transcription process of genes coding key glycolytic enzymes in the liver of the diabetic rats. Results: Over the four-week assessment period, rats’ food intake, and therefore blood glucose levels, were decreased through the daily oral administration of carvone and caraway extract (150 mg/kg) when compared to those administered with further STZ. The expression of key glycolytic enzymes, including glucokinase, pyruvate kinase, and phosphofructokinase 1 in the liver of diabetic rats was restored to near-normal levels by carvone and caraway extract, especially at the 150 mg/kg dose. Histopathological evaluation of diabetic rat liver demonstrated that administration of caraway extract and carvone decreased the STZ-induced damage to liver tissue. Conclusion: 150 mg/kg of caraway extract strongly regulates glycolysis by regulating the gene expression of key glycolytic enzymes in diabetic rats.

Nano-Stevia reduces the liver injury caused by streptozotocin (STZ)-induced diabetes in rats by targeting PEPCK/GCK genes, INSR pathway and apoptosis.

Extensive application of stevia in the treatment of type 2 diabetes mellitus (DM) has been proven by a large number of previous studies. We prepared stevia loaded in nanoniosomes (nanostevia) to improve its bioavailability, functionality, and stability and explore its protective effects and underlying mechanisms in the liver of STZ-induced diabetic rats. Single-dose intraperitoneal injection of STZ (50mg/kg body weight) was used to establish diabetic model. The mRNA levels of PEPCK and GCK genes and the protein level of INSR were evaluated by Real time-PCR and Western blot assays, respectively. TUNEL assay was used to detect apoptotic cell death in the liver tissue. Diabetic rats exhibited significantly reduced levels of INSR (*** P < 0.001) as well as elevated levels of PEPCK (*** P < 0.001). Both stevia and nano-stevia were capable of increasing levels of GCK and INSR and reducing levels of PEPCK (## P < 0.01 and ### P < 0.001, respectively). In addition, significantly increased number of apoptotic cell death was seen in the liver tissue of diabetic rats (*** P < 0.001) which was markedly mitigated by treatment with both Stevia and nano-Stevia (#P < 0.05 and ## P < 0.01, respectively). Both stevia and nano-stevia demonstrates potent anti-apoptotic activity in the liver tissue of diabetic rats by targeting PEPCK/GCK genes and INSR pathway. These finding show that nano-stevia has more potential to reduce the liver injury caused by STZ-induced diabetes in rats and hence can be considered a valid agent and alternative therapy for attenuating complications of type 2 DM. The online version contains supplementary material available at 10.1007/s40200-023-01278-2.

Antidiabetic activity of eupafolin through peroxisome proliferator-activated receptor-gamma and PI3K/Akt signaling in Type 2 diabetic rats.

Eupafolin is a phyto compound of flavone that exerts anti-inflammatory, antioxidant, and antiproliferative properties. The main purpose of this study is to examine the antidiabetic effect of eupafolin on nicotinamide-streptozotocin (STZ)-induced Type 2 diabetes (T2D) rats. After nicotinamide (120 mg/kg) treatment, STZ (60 mg/kg) was administrated intravenously to induce T2D. Rats with fasting blood glucose (FBG) > 200 mg/dL are chosen for the study 7 days after T2D induction. The eupafolin treatment was continued for another 15 days. FBG and an oral glucose tolerance test (OGTT) were measured on the 21st day after T2D induction. The blood lipid, serum insulin, and homeostatic model assessment (HOMA-IR) were determined. In liver homogenate, oxidative stress indicators were measured. In addition, the effect of eupafolin on the expression of the proteins InsR, insulin receptor substrate (IRS)-2, GLUT4, PPARγ, and phosphatidylinositol 3-kinase (PI3K)/Akt was investigated using a western blot. As measured by OGTT and HOMA-IR, eupafolin treatment reduced FBG and insulin resistance (IR). Furthermore, when compared to diabetic rats, liver antioxidant enzymes were dramatically normalized. The level of glycogen in the liver of diabetic rats was increased by eupafolin treatment. In T2D rats, eupafolin dramatically increased the InsR, IRS-2, GLUT4, and PPARγ. Further, the eupafolin treatment activated the PI3K/Akt signaling in T2D rats. These findings imply that the antidiabetic mechanism of eupafolin may be related to the activation of the PPARγ and the PI3K/Akt signaling pathway in T2D rats. As a result, the flavonoid eupafolin could be an antidiabetic medication for T2D after a comprehensive clinical investigation.

Fortification of Fermented Camel Milk with Salvia officinalis L. or Mentha piperita Leaves Powder and Its Biological Effects on Diabetic Rats.

The incorporation of fermented camel milk with natural additives possesses numerous benefits for the treatment of various pathological and metabolic conditions. The present study investigated the impact of fortification of fermented camel milk with sage or mint leaves powder (1 and 1.5%, respectively) on glucose and insulin levels, lipid profile, and liver and kidney functions in alloxan-induced diabetic rats. The gross chemical composition of sage and peppermint leaves powder was studied. The chemical composition of sage and mint extracts was performed using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-MS) of sage and mint extracts. Furthermore, a total of forty-two adult normal male albino rats were included in this study, whereas one group was kept as the healthy control group (n = 6 rats) and diabetes was induced in the remaining animals (n = 36 rats) using alloxan injection (150 mg/kg of body weight). Among diabetic rats groups, a control group (n = 6 rats) was kept as the diabetic control group whereas the other 5 groups (6 rats per group) of diabetic rats were fed fermented camel milk (FCM) or fermented camel milk fortified with 1 and 1.5% of sage or mint leaves powder. Interestingly, the oral administration of fermented camel milk fortified with sage or mint leaves powder, at both concentrations, caused a significant decrease in blood glucose level and lipid profile, and an increase in insulin level compared to the diabetic control and FCM groups. Among others, the best results were observed in the group of animals that received fermented camel milk fortified with 1.5% sage powder. In addition, the results revealed that the fermented camel milk fortified with sage or mint leaves powder improved the liver and kidney functions of diabetic rats. Our study concluded that the use of sage and mint leaves powder (at a ratio of 1.5%) with fermented camel milk produces functional food products with anti-diabetic activity.

Hepatoprotective effects of N-acetylcysteine on liver injury by irisin upregulation and oxidative stress reduction in diabetic rats

BackgroundThe current study aimed to investigate the oxidative stress in rat liver with diabetes mellitus (DM) as well as the protective effects of N-acetylcysteine (NAC) on irisin expression.MethodsTwenty-eight male Wistar rats were divided into four groups, 7 rats in each group, and 30-day regimens of experimental or control groups. NAC-treated group is as follows: 100 mg/kg once daily was administered intraperitoneally (i.p.). Diabetes-induced group is as follows: single-dose intraperitoneal injection of streptozotocin (STZ) (50 mg/kg) was used to induce DM in overnight fasting Wistar rats. By determining blood glucose concentration in STZ-induced rats 72 h after injection of STZ, DM was assessed. DM + NAC group is as follows: STZ-induced DM plus NAC is described previously. On the 30th day of the experiment, liver samples were collected after fasting and anesthesia. Biochemical analyses were performed to measure total antioxidant status (TAS), total oxidant status (TOS), and malondialdehyde (MDA) levels. Each liver sample was weighed and then prepared for histopathologic evaluation by light microscopy.ResultsThere was a statistically significant decrease in TAS levels and an increase in TOS and MDA levels in the DM group compared to the control group. In contrast, TOS and MDA levels were found significantly decreased, and TAS levels increased in the serum and liver tissues of the DM + NAC group compared to the DM group. Liver samples were also used for histopathological examination using hematoxylin-eosin and immunohistochemical staining. STZ-induced liver damage was detected as oxidative stress, increased irisin immunoreactivity, sinusoidal dilatation, and hepatocyte degeneration. In the DM + NAC group, it was observed that NAC significantly reduced the aforementioned histopathological changes due to STZ.ConclusionIn the early period of diabetes, due to the antioxidant properties of irisin related to the sudden response of liver tissue to oxidative stress, it is thought that the immunoreactivity in the tissue increases in the early period. As a result, NAC in diabetic rat liver tissue was found to suppress oxidative damage and irisin immunoreactivity.

Effect of Acalypha wilkesiana on Oxidative Stress and Histopathology of Liver and Kidney in Alloxan-induced Diabetic Albino Rats

This study investigated the effect of Acalypha wilkesiana on oxidative stress biomarkers as well as liver and kidney histopathology. 54 Albino rats were divided into 6 groups of 9 animals each including group 1 animals received only feed and water ad libitum; group 2 received 160mg/kg alloxan by the intraperitoneal route; group 3 received 0.07mg/kg of glibenclamide follow alloxan induction, while animals in groups 4, 5 and six received the aqueous leaf extract of Acalypha wilkesiana at doses of 100mg/kg, 200mg/kg and 400mg/kg following the induction. Three animals from each group were anaesthetized with diethyl ether and blood samples were collected by cardiac puncture on days 5, 10 and 15 into sample bottles containing anticoagulant for evaluation of oxidative stress parameters. Liver and Kidney samples were also collected from these animals and transferred into 10% formalin solution for the histological studies. Results revealed a significant increase in oxidative stress marked by decrease in oxidative stress markers such as CAT, SOD, GSH, GPx and increase in MDA values and pathological changes of liver and kidney following alloxan administration when compared with normal control. These changes were reversed by the extract in a dose dependent manner.

Effects of Moringa oleifera Leaf Extract on the Liver of Experimentally-Induced Diabetic Wistar Rats

Highlights: This study examined the antioxidant flavonoid compounds derived from naturally sourced Moringa oleifera leaves. 2. Moringa oleifera leaf extract was able to prevent tissue fibrosis and liver cirrhosis in diabetic rat models through the nonalcoholic fatty liver disease (NAFLD) pathway. Abstract: Diabetes mellitus is known as a risk factor for nonalcoholic fatty liver disease (NAFLD) which can progress to nonalcoholic steatohepatitis (NASH) and eventually lead to hepatocellular carcinoma (HCC) through various stages, including necro-inflammatory fibrosis, cirrhosis, and hepatitis. M. oleifera leaves contain flavonoid antioxidants, which inhibit reactive oxygen species (ROS) and oxidative stress in diabetes mellitus. This study aimed to investigate the potential of M. oleifera leaf extract at a dosage of 1,000 mg/kgbw to inhibit liver tissue fibrosis in diabetic rats. This study used a true experimental method with a post-test-only control group design. This study was conducted at the Faculty of Medicine, Universitas Jember, Jember, Indonesia, from November 2021 to January 2022 on 27 male Wistar rats that were divided into three groups of nine rats. The rats were induced with streptozotocin and M. oleifera leaf extract at a dosage of 1,000 mg/kgbw. Masson's trichrome staining and the Meta-analysis of Histological Data in Viral Hepatitis (METAVIR) scoring system were used to measure liver tissue fibrosis. Data were analyzed using the Kruskal-Wallis and Mann-Whitney tests to examine significant differences between groups. The results showed a significant difference in the degree of liver tissue fibrosis between the control and diabetes groups (p=0.00) as well as the diabetes and treatment groups (p=0.003). However, the results did not show any significant differences between the control and treatment groups (p=0.270). These findings suggested that administering M. oleifera leaf extract at a dosage of 1,000 mg/kgbw can inhibit liver tissue fibrosis. In conclusion, this study provides evidence that administering M. oleifera leaf extract can inhibit liver tissue fibrosis in diabetic rats.

An Ethyl Acetate Extract of Eryngium carlinae Inflorescences Attenuates Oxidative Stress and Inflammation in the Liver of Streptozotocin-Induced Diabetic Rats.

Secondary metabolites such as flavonoids are promising in the treatment of non-alcoholic fatty liver disease (NAFLD), which is one of the complications of diabetes due to oxidative stress and inflammation. Some plants, such as Eryngium carlinae, have been investigated regarding their medicinal properties in in vitro and in vivo assays, showing favorable results for the treatment of various diseases such as diabetes and obesity. The present study examined the antioxidant and anti-inflammatory effects of the phenolic compounds present in an ethyl acetate extract of the inflorescences of Eryngium carlinae on liver homogenates and mitochondria from streptozotocin (STZ)-induced diabetic rats. Phenolic compounds were identified and quantified by UHPLC-MS. In vitro assays were carried out to discover the antioxidant potential of the extract. Male Wistar rats were administered with a single intraperitoneal injection of STZ (45 mg/kg) and were given the ethyl acetate extract at a level of 30 mg/kg for 60 days. Phytochemical assays showed that the major constituents of the extract were flavonoids; in addition, the in vitro antioxidant activity was dose dependent with IC50 = 57.97 mg/mL and IC50 = 30.90 mg/mL in the DPPH and FRAP assays, respectively. Moreover, the oral administration of the ethyl acetate extract improved the effects of NAFLD, decreasing serum and liver triacylglycerides (TG) levels and oxidative stress markers and increasing the activity of the antioxidant enzymes. Likewise, it attenuated liver damage by decreasing the expression of NF-κB and iNOS, which lead to inflammation and liver damage. We hypothesize that solvent polarity and consequently chemical composition of the ethyl acetate extract of E. carlinae, exert the beneficial effects due to phenolic compounds. These results suggest that the phenolic compounds of the ethyl acetate extract of E. carlinae have antioxidant, anti-inflammatory, hypolipidemic, and hepatoprotective activity.

The Valorization of Agro-Wastes and Stevia Leaves as a Sugar Replacer in Cupcake Formulas: Histological and In Vivo Studies on Diabetic Rats

One potential solution to enhance the nutritional value of food while addressing environmental concerns is to use bioactive extracts from agro-waste in the food industry. This study aimed to investigate the effects of replacing sucrose with powders made from Stevia leaves (SLP), banana peels (BPP), and carrot leaves (CLP), as well as their mixtures, in cupcakes. Additionally, the study aimed to determine the impact of these substitutes on alloxan-induced diabetic rats fed the cupcakes. Sensory evaluation revealed that up to 60% of sucrose in the cupcake formula could be replaced without significant changes in sensory attributes. Substituting agro-wastes and SLP increased the protein content from 12.86% to 14.26% and the dietary fiber content from 3.65% to 5.60% compared to the control sample. The treated diabetic groups, particularly those fed cupcakes containing SLP-CLP mixture, showed increased body weight gain % and feed intake, reducing serum glucose levels from 427.5 to 180.8 mg/dL after 28 days. The mix of CLP-SLP had the highest additive effect, indicating a significant reduction in various biochemical parameters, including ALT, AST, albumin, urea, uric acid, creatinine, total cholesterol, triglyceride, and LDL, compared to the positive control. No histopathological alterations were detected in the pancreas and liver of diabetic rats fed cupcakes supplemented with SLP-CLP. However, moderate degenerations were observed in the hepatocytes of diabetic rats fed cupcakes fortified with SLP-BPP.

AMELIORATIVE POTENTIAL OF ETHANOL LEAF EXTRACT OF ANNONA CHERIMOLA IN ALLOXAN-INDUCED DIABETIC RATS

Diabetes mellitus (DM) is a chronic disease characterized by a relative or absolute lack of insulin secretion or insulin inaction. The study investigated the effect of Annona cherimola leaf extract on the liver and kidney function indices of alloxan-induced diabetic rats. A total of twenty (20) albino rats of both sexes weighing about 100g to 200g were used for the study, while eighteen (18) mice were used for the acute toxicity study. The animals were randomly divided into five (5) groups of four (4) rats each; Group 1 was not induced nor treated (normal control), group 2 was induced but not treated (untreated control), group 3 was induced and treated with 100 mg/kg b.w. of metformin (standard control), and groups 4 and 5 were induced and treated with 100 and 200 mg/kg b.w. of the extract respectively. The induction of diabetes was achieved by intraperitoneal injection of alloxan monohydrate (150 mg/kg b.w.). The oral administration (treatment) was done once per day using gavages for fifteen (15) days, and the blood glucose level was checked every three (3) days. The result indicated the extract possessed significant (p &lt; 0.05) antidiabetic effect on groups 4 and 5 compared to the untreated group. A significant (p &lt; 0.05) increase in serum total cholesterol (TC) and triglyceride (TAG) was also observed in groups 4 and 5 compared to the untreated group. In conclusion, this research showed that the ethanol leaf extract of Annona cherimolapossess a potent ameliorative effect in alloxan-induced diabetic rats.

Nerolidol Attenuates Diabetic Embryopathy in Streptozotocin-induced Diabetic Pregnant Rats by Reducing Embryonic and Maternal Oxidative Stress

Background Pregnancy complicated by diabetes leads to congenital disorders, spontaneous abortion, and neonatal morbidity and mortality, which are termed diabetic embryopathy or fetopathy. Objectives In this work, we planned to investigate the therapeutic potentials of nerolidol against streptozotocin (STZ)-induced diabetic embryopathy in rats through attenuating maternal and fetal oxidative stress. Materials and Methods The male and female Wistar rats were allowed to mate for a night at a 1:1 ratio. After the confirmation of pregnancy, the rats were administered 40 mg/kg of STZ (i.p.) to initiate diabetes and treated with 20 and 40 mg/kg of nerolidol. The changes in food intake, body weight, blood glucose, and urine output were regularly monitored. The levels of lipid profiles were estimated using assay kits. The oxidative stress and antioxidant biomarkers in the liver tissues and embryonic fractions were measured using assay kits. Results The nerolidol treatment considerably depleted the blood glucose and urine output and augmented the body weight and diet intake in diabetic rats. The nerolidol suppressed the cholesterol (Ch), triglycerides (TG), and very low density lipoprotein (VLDL) and elevated the high density lipoprotein (HDL) level in diabetic pregnant rats. The maternal and embryonic oxidative stress levels are effectively reduced by the nerolidol treatment by decreasing the malondialdehyde (MDA) and reactive oxygen species (ROS) levels. The levels of antioxidants were also increased by the nerolidol on both liver and embryonic fractions of diabetic pregnant rats. Conclusion Our results exhibited that the nerolidol treatment considerably reduced embryonic and maternal oxidative stress and embryonic deaths. Hence, it can be a hopeful therapeutic candidate to treat diabetic embryopathy.

Phloretamide Prevent Hepatic and Pancreatic Damage in Diabetic Male Rats by Modulating Nrf2 and NF-κB.

This study examined the effect of phloretamide, a metabolite of phloretin, on liver damage and steatosis in streptozotocin-induced diabetes mellitus (DM) in rats. Adult male rats were divided into two groups: control (nondiabetic) and STZ-treated rats, each of which was further treated orally with the vehicle phloretamide 100 mg or 200 mg. Treatments were conducted for 12 weeks. Phloretamide, at both doses, significantly attenuated STZ-mediated pancreatic β-cell damage, reduced fasting glucose, and stimulated fasting insulin levels in STZ-treated rats. It also increased the levels of hexokinase, which coincided with a significant reduction in glucose-6 phosphatase (G-6-Pase), and fructose-1,6-bisphosphatase 1 (PBP1) in the livers of these diabetic rats. Concomitantly, both doses of phloretamide reduced hepatic and serum levels of triglycerides (TGs) and cholesterol (CHOL), serum levels of low-density lipoprotein cholesterol (LDL-c), and hepatic ballooning. Furthermore, they reduced levels of lipid peroxidation, tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), mRNA, and total and nuclear levels of NF-κB p65, but increased mRNA levels, total and nuclear levels of Nrf2, as well as levels of reduced glutathione (GSH), superoxide dismutase (SOD-1), catalase (CAT), and heme-oxygenase-1 (HO-1) in the livers of diabetic rats. All of these effects were dose-dependent. In conclusion, phloretamide is a novel drug that could ameliorate DM-associated hepatic steatosis via its powerful antioxidant and anti-inflammatory effects. Mechanisms of protection involve improving the β-cell structure and hepatic insulin action, suppressing hepatic NF-κB, and stimulating hepatic Nrf2.

Exploring of the ameliorative effects of Nerium (Nerium oleander L.) ethanolic flower extract in streptozotocin induced diabetic rats via biochemical, histological and molecular aspects.

Nerium oleander L. is ethnopharmacologically used for diabetes. Our aim was to investigate the ameliorative effects of ethanolic Nerium flower extract (NFE) in STZ-induced diabetic rats. Seven random groups including control group, NFE group (50mg/kg), diabetic group, glibenclamide group and NFE treated groups (25mg/kg, 75mg/kg, and 225mg/kg) were composed of forty-nine rats. Blood glucose level, glycated hemoglobin (HbA1c), insulin level, liver damage parameters and lipid profile parameters were investigated. Antioxidant defense system enzyme activities and reduced glutathione (GSH) and malondialdehyde (MDA) contents and immunotoxic and neurotoxic parameters were determined in liver tissue. Additionally, the ameliorative effects of NFE were histopathologically examined in liver. mRNA levels of SLC2A2 gene encoding glucose transporter 2 protein were measured by quantitative real time PCR. NFE caused decrease in glucose level and HbA1c and increase in insulin and C-peptide levels. Additionally, NFE improved liver damage biomarkers and lipid profile parameters in serum. Moreover, lipid peroxidation was prevented and antioxidant enzyme activities in liver were regulated by NFE treatment. Furthermore, anti-immunotoxic and anti-neurotoxic effects of NFE were determined in liver tissue of diabetic rats. Histopathogically, significant liver damages were observed in the diabetic rats. Histopathological changes were decreased partially in the 225mg/kg NFE treated group. SLC2A2 gene expression in liver of diabetic rats significantly reduced compared to healthy rats and NFE treatment (25mg/kg) caused increase in gene expression. Flower extract of Nerium plant may have an antidiabetic potential due to its high phytochemical content.

Antidiabetic, antihyperlipidemic and protective effects of Gladiolus psittacinus on hyperglycemia-mediated oxidative stress in streptozotocin-induced diabetic rats.

Gladiolus psittacinus (GP) is an important medicinal plant in folk medicine where its corm is used for treatment of diabetes mellitus. Despite this, there is paucity of scientific information to justify its use as antidiabetic drug. Hence, this study was designed to explore antidiabetic, antihyperlipidemic and effects of aqueous extract of Gladiolus psittacinus (AGP) on hyperglycemia-associated oxidative stress in pancreas, kidney and liver of diabetic rats. Diabetes mellitus (DM) was induced in rats using streptozotocin 50mg/kg (i.p.). Normal and diabetic rats were treated orally with AGP once a day for 14days. Antidiabetic effects were evaluated on body weight, fasting blood glucose concentration (FBGC), lipid profiles and serum chemistry. Also, protective effects of AGP were also determined on markers of oxidative stress, antioxidant enzymes and histopathology of pancreas, kidney and liver of diabetic rats. Treatment with AGP emanated to significant decrease of FBGC (552.67-157.33mg/dL), increase in body weight (100.01-133.76g) and positive modulation of lipid parameters in diabetic rats. The alteration in the contents of markers of liver and kidney function were significantly modulated in the diabetic rats upon treatment. Also, oxidative damage and antioxidant depletions in pancreas, kidney and liver were significantly mitigated in treated diabetic rats. Structural aberrations in the histopathology slides of pancreas, kidney and liver were improved upon treatment. It can be concluded that AGP could be used in the treatment of diabetes mellitus and its related ailments, thereby justifying its usage in traditional medicine.

Insulin Treatment Affects Brain Protein Synthesis Rate in Streptozotocin-Induced Diabetic Rats

The purpose of this study was to determine whether insulin treatment affected the rate of brain protein synthesis in diabetic rats. Experiments were conducted on three groups of rats given streptozotocin without insulin treatment (diabetes), treated with streptozotocin + insulin (diabetes + insulin) or treated with neither streptozotocin nor insulin (control). The fractional rates of protein synthesis in brain, liver and kidney of diabetic rats treated with insulin were significantly greater than in diabetic rats without insulin treatment. In brain, liver and kidney, the RNA activity [g protein synthesized/(g RNA·d)] was significantly correlated with the fractional rate of protein synthesis. The RNA concentration (mg RNA/g protein) was not related to the fractional rate of protein synthesis in any organ. The results suggest that insulin treatment of diabetic rats is likely to increase the rate of protein synthesis in the brain, and that RNA activity is related to the fractional rate of brain protein synthesis.

The Effects of Metformin Treatment on Diabetic Albino Rats' Pancreas, Liver, and Kidney Histology.

Metformin, an oral hypoglycemic drug, has traditionally been considered the standard therapy for hyperglycemia. Metformin's several modes of action include inhibition of hepatic gluconeogenesis, anti-glucagon activity, and insulin-sensitizing effect. This study aims to assess the effectiveness of Metformin on the liver, pancreatic, and kidney tissues of alloxan-induced diabetic albino rats. Twenty mature albino white male rats were allocated at random into two groups. Intraperitoneal injections of alloxan monohydrate were utilised to induce diabetic Mellitus type II in the first ten rats. The second group of rats were injected intraperitoneally with normal saline. Both groups were then separated into four subgroups: Group 1 consisted of non-diabetic rats that were only administered distilled water (control), Group 2 consisted of non-diabetic rats that were administered metformin at a dose of 1000 mg/kg/day, and Group 3 consisted of diabetic control animals that were administered alloxan intravenously and distilled water orally, but were not given any medications. After seven days of DM induction, diabetic rats were administered Metformin at a dose of 1000 mg/kg/day orally. After one month of therapy, the animals were slaughtered and their organs were harvested. Compared to the control group, the histological results of pancreatic tissue were normal in the treatment groups. In contrast, liver and kidney sections from non-diabetic control, non-diabetic, and diabetic animals given 1000 mg/kg/day of Metformin had normal histology. Still, both tissues of untreated diabetic control mice exhibited lymphocyte infiltration. Metformin has been found to have significant blood glucose lowering properties and the capacity to protect several organs from the negative consequences of diabetes.

Comparative study of aqueous, methanol and petroleum ether extracts of unripe Carica papaya seed on liver and kidney function in streptozotocin-induced diabetic rats

Comparative study of aqueous, methanol and petroleum ether extracts of unripe Carica papaya seed on liver and kidney function in streptozotocin-induced diabetic rats

Comparative study of aqueous, methanol and petroleum ether extracts of unripe Carica papaya seed on liver and kidney function in streptozotocin-induced diabetic rats

Background: Diabetes as chronic disease has serious complications which can affect multiple vital organ systems, thereby leading to more severe and irreversible pathological conditions. This study investigated the hepatoprotective and nephroprotective potentials of unripe Carica papaya (UCP) seed extract in diabetic rats using three different solvents. Methods: Thirty adult male Wistar rats were used. Twenty-five out of thirty were induced with diabetes following an overnight fast, by a single intravenous injection of 60 mg/kg STZ. The rats were grouped into six groups (n=5):NC: normal control, DC: diabetic control, DSTD: diabetic and treated with glibenclaimide, aqueous (DAUCP), methanol (DMUCP) and petroleum ether (DPEUCP) rats were induced but treated with 200 mg of aqueous, methanol and petroleum ether extract of UCP seed extract respectively. The extracts were administered to the animals orally for 21 days. Results: The animals administered with different extracts showed significant decrease (P&lt;0.05) in blood sugar level, ALT, AST, ALP, γ-GT, urea, creatinine, BUN, total and direct bilirubin and an increase level in total protein, albumin, globulin and sodium, potassium, bicarbonate and chloride when compared to the diabetic control group. Conclusion: It can be inferred from that data that the extracts have hepatoprotective and nephroprotective potentials on the liver and kidney. This implies that unripe C. papaya seed can be effectively used in the management of diabetes.

Systematic assessment of streptozotocin-induced diabetic metabolic alterations in rats using metabolomics.

Type 1 diabetes is characterized by elevated blood glucose levels, which negatively impacts multiple organs and tissues throughout the body, and its prevalence is on the rise. Prior reports primarily investigated the serum and urine specimen from diabetic patients. However, only a few studies examined the overall metabolic profile of diabetic animals or patients. The current systemic investigation will benefit the knowledge of STZ-based type 1 diabetes pathogenesis. Male SD rats were arbitrarily separated into control and streptozotocin (STZ)-treated diabetic rats (n = 7). The experimental rats received 50mg/kg STZ intraperitoneal injection daily for 2 consecutive days. Following 6 weeks, metabolites were assessed via gas chromatography-mass spectrometry (GC-MS), and multivariate analysis was employed to screen for differentially expressed (DE) metabolites between the induced diabetic and normal rats. We identified 18, 30, 6, 24, 34, 27, 27 and 12 DE metabolites in the serum, heart, liver, kidney, cortex, renal lipid, hippocampus, and brown fat tissues of STZ-treated diabetic rats, compared to control rats. Based on our analysis, the largest differences were observed in the amino acids (AAs), B-group vitamin, and purine profiles. Using the metabolic pathway analysis, we screened 13 metabolic pathways related to the STZ-exposed diabetes pathogenesis. These pathways were primarily AA metabolism, followed by organic acids, sugars, and lipid metabolism. Based on our GC-MS analysis, we identified potential metabolic alterations within the STZ-exposed diabetic rats, which may aid in the understanding of diabetes pathogenesis.