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Introduction: Pregestational diabetes constitutes a reproductive risk which requires new treatment strategies. NeuroEPO, a variant of the recombinant human erythropoietin produced in Cuba, has neuroprotective and hypoglycemic effects which can be considered for the treatment of this entity. Objective: To evaluate the protective effect of NeuroEPO on the reproduction of diabetic rats. Material and Methods: Four groups of adult female Wistar rats with streptozotocin-induced diabetes were used. During pregnancy, one group received the vehicle and the rest of the groups received different doses of NeuroEPO (0,5 mg/kg, 0,75 mg/kg, and 1 mg/kg) subcutaneously, on alternate days, for a total of six applications. A group of non-diabetic rats was used as a control group. Glycemia and reproductive variables were evaluated. For comparisons, Analysis of Variance and Fisher's Exact Test were used. There were significant differences with p-values less than 0,05. Results: The group with vehicle presented maintained hyperglycemia, fewer implantations, and embryos, and increased gestational losses. In the group receiving 0,5 mg/kg of NeuroEPO, glycemia decreased significantly and the results of the reproductive variables were similar to the group of non-diabetic rats. With higher doses of NeuroEPO, gestational losses were increased. No congenital malformations were identified in either group. Conclusions: The repeated administration of 0,5 mg/kg of NeuroEPO has a beneficial effect on the reproduction of diabetic rats, which may be associated with the reduction of hyperglycemia. Other cytoprotective mechanisms of NeuroEPO should be evaluated in future studies(AU)
Introducción: la diabetes pre-gestacional constituye un riesgo reproductivo, lo que requiere nuevas estrategias de tratamiento. Teniendo en cuenta que la NeuroEPO, una variante de la eritropoyetina recombinante humana producida en Cuba, tiene efectos neuroprotectores e hipoglicemiantes. Objetivo: evaluar el efecto protector de la NeuroEPO en la reproducción de ratas diabéticas. Material y Métodos: se utilizaron cuatro grupos de ratas Wistar hembras adultas, con diabetes inducida por estreptozotocina. Durante la gestación, un grupo recibió el vehículo y el resto diferentes dosis de NeuroEPO (0,5 mg/kg, 0,75 mg/kg y 1 mg/kg), por vía subcutánea, en días alternos, para un total de seis aplicaciones. Se empleó un grupo de ratas no-diabéticas como control. Se evaluó la glicemia y variables reproductivas. Para las comparaciones se empleó el Análisis de Varianza y la Prueba Exacta de Fisher. Las diferencias se consideraron significativas con valores de p menores que 0,05. Resultados: el grupo con vehículo presentó hiperglicemia mantenida, menor número de implantaciones y embriones, e incremento de las pérdidas gestacionales. En el grupo que recibió 0,5 mg/kg de NeuroEPO, la glicemia disminuyó de forma significativa y los resultados de las variables reproductivas fueron similares al grupo de ratas no-diabéticas. Con las dosis superiores de NeuroEPO se incrementaron las pérdidas gestacionales. No se identificaron malformaciones congénitas en ninguno de los grupos. Conclusiones: la administración reiterada de 0,5 mg/kg de NeuroEPO tiene efecto beneficioso en la reproducción de ratas diabéticas, que puede estar asociado a la reducción de la hiperglicemia. Otros mecanismos citoprotectores de la NeuroEPO deben ser evaluados en futuros estudios(AU)
Subject(s)
Rats , Erythropoietin/administration & dosageABSTRACT
Objective: To determine the anti-hyperglycemic effects of interleukin-1 inhibitor (diacerein) in alloxan induced diabetic albino wistar rats. This experimental study was performed at the Department of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tando Jam within 6 months from April 2016 to September 2016. Total of 160 adult Albino Wistar Rats having an average of 200 to 300 grams body weights were selected. Animals were categorized into 4 groups as; Group A (n=15): Control rats – receive 0.9% normal saline as placebo Experimental Groups Group B (n=15): Experimental Control (Diabetic rats) - Alloxan50 mg/kg body weight intraperitoneal. Group C (n=15): Diabetic rats + Diacerein (30 mg/kg/day) orally daily. Group D (n=15): Diabetic rats + Diacerein (50 mg/kg/day) orally daily. Animals were kept and treated as per the NIH Guideline for Use and Care of Laboratory Animals. Diabetes mellitus was induced via a single intraperitoneal injection of 50 milligram/kg alloxan monohydrated dissolved in aseptic 0.9% saline. After 72 hours, blood specimens were taken from the caudal vein of the rats and glucose level>200 mg/dL was taken as diabetes. Experimental rats were given diacerein approximately 30 and 50 mg orally for 6 weeks. At the completion of experiment the body weight was measured of each animal by electronic measuring balance and blood sample was taken from each animal of all groups to assess the blood glucose level and HbA1c level. Data were recorded via self-made proforma and analysis was done by using SPSS version 20. Results: Average body weight of Diabetic control (Group B) was 193.33±22.50 grams, which was lower in contrast to Diacerein treated group C 202.47±25.70 grams and significantly lower as compared to Diacerein treated group D as 212.6±23.43 grams. A significant increase in blood glucose levels 182.07±10.63 mg/dl was noted in the Diabetic control (Group B) compared to Diacerein treated group C (110.13± 8.54 mg/dl) and group D (85.87±8.41 mg/dl) (P=0.001). HbA1c was markedly raised in the Group B- diabetic controls, while diacerein treated diabetic rats (groups C and D) showed a significant decrease in HbA1c (P=0.001). Conclusion: It was concluded that Diacerein achieves the Euglycemic state by reducing the levels of blood glucose and glycated hemoglobin (HbA1c) in Alloxan-Induced diabetes mellitus in Wistar Albino Rats
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The present study was carried out on the phytochemical composition and biochemical studies oftheleafextract ofBrillantaisia guinensis peuvon alloxan treated Wistar albinorats.The experimental rats were administered with 80mg/kgbodyweight of alloxan,viathetailvein.After five days treatment with alloxan, thetreatment with the extractscommenced. Extracts wereadministeredorallyat100,200and 300mg/kg bw(both tonormal andtreated rats) for twenty-one days.Metformin,which served as a standard drug was administered at50mg/kg. Chromatographicanalysisof thephytochemical content of the leaf extract, revealed the presence of flavonoids (30.7mg/100g), saponins(50.6mg/100g), phytosterol (6.22mg/100g), tannins (7.50mg/100g) and glycosides(29.3mg/100g). Comparedtotest and normalcontrol,the extractsdose-dependentlyand significantlylowered(P<0.05) plasmaglucose and triglycerides, during the experimental period. Thisstudy revealedthe presence of pharma cologically bioactive compounds inthelea fextract and showed that the leaf extract had a dose-dependent hypoglycemic and hypotriglyceridemic effect on the Wistaralbino rats. The findings suggest a likely protective role of the extracts against hyperglycemia and hypertriglyceridemia thereby useful in the treatment and management of diabetes mellitus, obesity and other related cardiovascular diseases.
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Objective: Rehmanniae Radix has been traditionally used to treat diabetes. Catalpol (CAT) and stachyose (STA) are two of the main bioactive compounds in Rehmannia Radix and found to have similar therapeutic effects on diabetes and its complications. In this paper, we aimed to investigate whether there were synergistic therapeutic effects of CAT and STA on diabetes. Methods: Streptozotocin (STZ) with the feeding of high-sugar-high-fat diet (HFD) was applied to induce diabetic C57BL/6 mice. STZ-HFD induced diabetic mice were then divided into model and six medical-treated groups: metformin (MET), STA, CAT, and three combinations of CAT:STA (1:1, 1:2, 2:1). Blood, liver, and kidney samples were isolated after six-week oral administration for biochemical assays of serum lipids, the indicators of kidney and liver functions and HE staining for liver tissues. Results: It turned out that CAT, STA and their three combinations (1:1, 1:2, 2:1) could effectively control body weight, blood glucose, kidney weight and liver weight index, and well regulate levels of TC, HDL-c, TG, ALT, and TBA. In addition, CAT and its combination with STA at the ratio of 2:1 could significantly improve albumin content, compared to that in model group. STA and CAT and their combinations showed the improvements on kidney function in terms of urinary creatinine (Ucr). However, there were no such consistent observations on serum creatinine (Scr) and creatinine clearance rate (Ccr). The combination of CAT and STA at the ratio of 1:1 exhibited the better adjusting effects on kidney weight and liver weight indexes and the levels of ALT, Ucr, Scr, and Ccr. Our results demonstrated that the combinations of CAT and STA especially 1:1 showed similar or better improvements on diabetes-associated complications, compared to the sole CAT or STA treatment. Conclusion: Thus, we concluded that there were synergistic therapeutic effects between CAT and STA on STZ/HFD-induced type 2 diabetes. This project provided insights and technical supports for the innovation of discovering bioactive constituents in Rehmannia Radix and studying its integrative mechanism in curing diabetes.
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Human papillomavirus infection is now a well-established cause of many common cancers like cervical, other anogenital, and head and neck cancers. The mortality and morbidity rate associated with these cancers constitute a major burden especially for the underdeveloped and developing countries of the world, where they are more common. Traditionally, all these subsites are being treated with different chemoradiation protocols with variable results. Toxicities associated with the standard high dose chemoradiation protocols form a major obstacle in the completion of treatment for these patients and often affects the outcome negatively. Personal experience and published reports and reviews suggests that HPV associated squamous cell cancers are a distinct biological sub group of cancer which can be treated safely with reduced intensity of chemoradiation. The establishment of a similar de-intensified chemoradiation protocol for all HPV associated squamous cell carcinoma will certainly improve the quality of life of such patients.
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This case control study had been carried out to evaluate antidiabetic and antioxidant activities of Tinospora cordifolia (T. cordifolia; family: Menispermaceae) against streptozotocin induced diabetes in experimental rats to scientifically validate its use against diabetes. Ethanolic extract of T. cordifolia stem extract and standard drug (glibenclamide) macerated with aqueous gum acacia (2%, w/v) suspension and fed orally to streptozotocin induced male adult diabetic rats of Charles Foster strain for 30 days. Biochemical parameters in normal, diabetic control, standard (600µg/kg bw p.o.) and treated (500 mg/kg bw p.o.) animals group were determined and compared. Treatment of streptozotocin induced diabetic rats with ethanolic extract caused significant (p<0.001) reduction in blood glucose, total cholesterol, triglyceride, phospholipids, free fatty acid, lipid peroxide and significant increased (p<0.001) post heparin lipolytic activity. Furthermore, the stem extract (100-400 µg) when tested for its antioxidant activity in vitro, shown significant (p<0.001) inhibit the generation of super oxide anions in enzymic system a, in enzymic system b, non enzymic system and hydroxyl radicals in enzymic system and non-enzymic system. The results of the present study demonstrated antidiabetic antidyslipidemic and anti oxidant activities of T. cordifolia stem extract which could help in prevention of diabetic- dyslipidemia and related complications.
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Objective To evaluate Brachychiton acerifolius leaf extracts as antidiabetic potential agent and to identify the main active constituents using bioactivity guided fractionation. Methods In vitro antioxidant activity was evaluated for B. acerifolius different extracts using DPPH assay and vitamin C as control. Antidiabetic activity was then determined using STZ-induced rats treated daily with ethyl acetate and 70% ethanol leaf extracts for 4 weeks at a dose of 200 g/kg body weight against gliclazide reference drug. Blood glucose, α-amylase, lipid profile, liver function enzymes and oxidative stress markers were assessed along with histopathological study for liver and pancreatic tissues. Isolation and structural elucidation of active compounds were made using Diaion and Sephadex followed by spectral analyses. Results The results indicated that ethyl acetate and ethanol leaf extracts exhibited the strongest antioxidant activity compared to that of vitamin C (IC
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Objective:To evaluate Brachychiton acerifolius leaf extracts as antidiabetic potential agent and to identify the main active constituents using bioactivity guided fractionation.Methods:In vitro antioxidant activity was evaluated for B.acerifolius different extracts using DPPH assay and vitamin C as control.Antidiabetic activity was then determined using STZ-induced rats treated daily with ethyl acetate and 70％ ethanol leaf extracts for 4 weeks at a dose of 200 g/kg body weight against gliclazide reference drug.Blood glucose,α-amylase,lipid profile,liver function enzymes and oxidative stress markers were assessed along with histopathological study for liver and pancreatic tissues.Isolation and structural elucidation of active compounds were made using Diaion and Sephadex followed by spectral analyses.Results:The results indicated that ethyl acetate and ethanol leaf extracts exhibited the strongest antioxidant activity compared to that of vitamin C (IC50 0.05,0.03 and 12 mg/mL,respectively).Both extracts showed potent anti-hyperglycemic activity evidenced by a significant decrease in serum glucose levels by 82.5％ and 80.9％ and α-amylase by 45.2％ and 53.6％,as compared with gliclazide 68％ and 59.4％,respectively.Fractionation of ethanol extract resulted in the isolation of 9 flavonoids including apigenin-7-O-α-rhamnosyl(1 → 2)-β-D-glucuronidc,apigenin-7-O-β-D-glucuronide,apigcnin-7-O-β-D-glucoside and luteolin-7-O-β-D-glucuronide.Conclusions:This study highlights the potential use of B.acerifolius leaf extract enriched in flavones for the treatment of diabetes that would warrant further clinical trials investigation.
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ABSTRACT Murva is an important drug in Ayurveda. Wattakaka volubilis is used as one of the botanical sources of Murva. The aim of this study is to evaluate the effect of the alcohol extract of W. volubilis root in streptoztocin (STZ) induced diabetes and diabetic neuropathy. Diabetes mellitus (DM) was induced by the administration of STZ (45 mg/kg, i.p). DM was induced within 72 h. Diabetic animals were treated with glimepiride (0.5 mg/kg) and ethyl alcohol extract 100 and 200 mg/kg for 21 d. After determining the changes in fasting serum glucose and lipid profile, animals were further treated for a period of 15 d to determine the protective effect of extract against diabetic neuropathy. All the alcohol extract treated animals, showed a significant decrease in serum glucose level (P<0.001), and overall decrease in the severity of diabetic neuropathy. Alcohol extract of W. volubilis root showed antihyperglycemic activity and beneficial protection against diabetic neuropathy and hence can be a promising agent for treatment and prevention of diabetic neuropathy.
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Plant Roots , Apocynaceae/classification , Diabetes Mellitus, Experimental , Diabetes Mellitus , Diabetic NeuropathiesABSTRACT
Objective To investigate the antidiabetic activity of Ocimum tenuiflorum L. (O. tenuiflorum) leaves used in the traditional medicine management of diabetes in Malaysia. Methods O. tenuiflorum leaves were extracted sequentially with hexane, chloroform, ethyl acetate, methanol, and water. The extracts were evaluated in terms of antidiabetic activity by using acute, subcutaneous glucose tolerance, and sub-chronic tests in streptozotocin-induced diabetic rats. The extracts were also subjected to phytochemical analyses. Results With an acute dose (1 g/kg), the methanol extracts showed significant reduction (31%) in fasting blood glucose (FBG) of the streptozotocin-induced diabetic rats. The FBG-decreasing effect of ethyl acetate extract was more rapid than that of the other extracts; the decreasing rates were 20% after 2 h, 21% after 3 h, and 8% after 5 and 7 h. After 7 h (31%), the effect of methanol extract on FBG was significantly lower than that of metformin. In the subcutaneous glucose tolerance test, only methanol and hexane extracts showed the similarity of metformin in diabetic rats. After 14 days, the effects of these extracts were similar to those of metformin (63.33%). The total flavonoid and phenolic contents of extracts decreased as the polarity of the extraction solvent increased. Conclusions The results obtained provide support for a possible use of O. tenuiflorum leaves in managing hyperglycemia and preventing the complications associated with it in type 2 diabetic.
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Diabetes is a major risk factor for the progression of vascular disease, contributing to elevated levels of glycoxidation, chronic inflammation and calcification. Tissue engineering emerges as a potential solution for the treatment of vascular diseases however there is a considerable gap in the understanding of how scaffolds and stem cells will perform in patients with diabetes. We hypothesized that adipose tissue-derived stem cells (ASCs) by virtue of their immunosuppressive potential would moderate the diabetes-intensified inflammatory reactions and induce positive construct remodeling. To test this hypothesis, we prepared arterial elastin scaffolds seeded with autologous ASCs and implanted them subdermally in diabetic rats and compared inflammatory markers, macrophage polarization, matrix remodeling, calcification and bone protein expression to control scaffolds implanted with and without cells in nondiabetic rats. ASC-seeded scaffolds exhibited lower levels of CD8+ T-cells and CD68+ pan-macrophages and higher numbers of M2 macrophages, smooth muscle cell-like and fibroblast-like cells. Calcification and osteogenic markers were reduced in ASCseeded scaffolds implanted in non-diabetic rats but remained unchanged in diabetes, unless the scaffolds were first pre-treated with penta-galloyl glucose (PGG), a known anti-oxidative elastin-binding polyphenol. In conclusion, autologous ASC seeding in elastin scaffolds is effective in combating diabetes-related complications. To prevent calcification, the oxidative milieu needs to be reduced by elastin-binding antioxidants such as PGG.
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Animals , Humans , Rats , Antioxidants , Diabetes Complications , Elastin , Glucose , Inflammation , Macrophages , Muscle, Smooth , Prostaglandins G , Risk Factors , Stem Cells , T-Lymphocytes , Tissue Engineering , Vascular Diseases , VirtuesABSTRACT
The social significance of diabetes mellitus lies in the fact that in addition to significant prevalence, this disease is associated with many complications. To facilitate the course of diabetes and its complications medicinal plants are widely used in traditional medicine. One of such plants is kidney bean (Phaseolus vulgaris). This plant is used in traditional medicine, especially for the secondary complications of diabetes. Since complications of diabetes are often associated with increased oxidative stress, the study of antioxidant properties of P. vulgaris is important to clarify the mechanism of its therapeutic effect. Present investigation shows that long-term oral administration of aqueous P. vulgaris pods extract in dose of 200mg/kg b.w. besides its pronounced hypoglycemic action also has a positive influence on the liver and kidney function markers in STZ-treated diabetic rats. The extract also inhibits free radical production and lipid peroxidation and activates antioxidant enzymes in liver and kidneys of rats with STZ-induced diabetes. Thus, our data reveal antioxidant properties of aqueous P. vulgaris pods extract that might have beneficial effect in treatment of diabetes.
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Objectives: To study the antidiabetic and antioxidant activities of nipa palm vinegar (NPV) used in traditional Malay medicine for treating diabetes. Methods: NPV was extracted using liquid-liquid extraction method and the obtained samples were subjected to antidiabetic studies using normal and streptozotocin-induced diabetic rat models whereas antidoxidant activities were investigated via in vitro antioxidant tests namely 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radicals scavenging activities and the reducing power assay. Results: Single administration of NPV and its extracts were not effective in both normal and diabetic rats. In intraperitoneal glucose tolerance test, NPV and its aqueous extract showed significant blood glucose lowering effect. In the sub-acute study, compared with the diabetic control, aqueous extract of NPV showed the most notable blood glucose lowering effect (56.6%) and a significant improvement in serum insulin levels (79.8%, P < 0.05). To assess NPV's antioxidant activity, three in vitro antioxidant tests were employed: 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radical-scavenging assays, and the reducing power assay. Ethyl acetate extract had the greatest antioxidant potential and content of phenolic and flavonoid compounds. A linear positive correlation between the antioxidant parameters was observed. Chemical profiling analysis of aqueous extract of NPV revealed the presence of acetic acid (35.25%), the main active constituent which significantly contributed to the observed antidiabetic activity. Conclusions: Aqueous extract of NPV possesses antihyperglycaemic activities comparable to the metformin, while the ethyl acetate extract precipitated significant antioxidant effects attributable to its high phenolic content. These findings suggest that antioxidant compounds of NPV do not contribute much towards the overall observed antidiabetic effect.
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OBJECTIVES@#To study the antidiabetic and antioxidant activities of nipa palm vinegar (NPV) used in traditional Malay medicine for treating diabetes.@*METHODS@#NPV was extracted using liquid-liquid extraction method and the obtained samples were subjected to antidiabetic studies using normal and streptozotocin-induced diabetic rat models whereas antidoxidant activities were investigated via in vitro antioxidant tests namely 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radicals scavenging activities and the reducing power assay.@*RESULTS@#Single administration of NPV and its extracts were not effective in both normal and diabetic rats. In intraperitoneal glucose tolerance test, NPV and its aqueous extract showed significant blood glucose lowering effect. In the sub-acute study, compared with the diabetic control, aqueous extract of NPV showed the most notable blood glucose lowering effect (56.6%) and a significant improvement in serum insulin levels (79.8%, P < 0.05). To assess NPV's antioxidant activity, three in vitro antioxidant tests were employed: 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radical-scavenging assays, and the reducing power assay. Ethyl acetate extract had the greatest antioxidant potential and content of phenolic and flavonoid compounds. A linear positive correlation between the antioxidant parameters was observed. Chemical profiling analysis of aqueous extract of NPV revealed the presence of acetic acid (35.25%), the main active constituent which significantly contributed to the observed antidiabetic activity.@*CONCLUSIONS@#Aqueous extract of NPV possesses antihyperglycaemic activities comparable to the metformin, while the ethyl acetate extract precipitated significant antioxidant effects attributable to its high phenolic content. These findings suggest that antioxidant compounds of NPV do not contribute much towards the overall observed antidiabetic effect.
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Objective:To study the antidiabetic and antioxidant activities of nipa palm vinegar (NPV) used in traditional Malay medicine for treating diabetes.Methods:NPV was extracted using liquid-liquid extraction method and the obtained samples were subjected to antidiabetic studies using normal and streptozotocin-induced diabetic rat models whereas antidoxidant activities were investigated viain vitroantioxidant tests namely 2,2-diphenyl-1-picrylhydrazyl and 2,2’-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radicals scavenging activities and the reducing power assay.Results:Single administration of NPV and its extracts were not effective in both normal and diabetic rats. In intraperitoneal glucose tolerance test, NPV and its aqueous extract showed significant blood glucose lowering effect. In the sub-acute study, compared with the diabetic control, aqueous extract of NPV showed the most notable blood glucose lowering effect (56.6%) and a significant improvement in serum insulin levels (79.8%, P<0.05). To assess NPV’s antioxidant activity, threein vitro antioxidant tests were employed:2,2-diphenyl-1-picryhydrazyl and 2,2’-azinobis-3-ethylbenzothiozoline-6-sulfonic acid free radical-scavenging assays, and the reducing power assay. Ethyl acetate extract had the greatest antioxidant potential and content of phenolic and flavonoid compounds. A linear positive correlation between the antioxidant parameters was observed. Chemical profiling analysis of aqueous extract of NPV revealed the presence of acetic acid (35.25%), the main active constituent which significantly contributed to the observed antidiabetic activity.Conclusions:Aqueous extract of NPV possesses antihyperglycaemic activities comparable to the metformin, while the ethyl acetate extract precipitated significant antioxidant effects attributable to its high phenolic content. These findings suggest that antioxidant compounds of NPV do not contribute much towards the overall observed antidiabetic effect.
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Background: Study was aimed to evaluate the antidiabetic activity of Murraya koenigii, a traditional medicinal plant (Curry leaf) in normoglycemic and alloxan-induced diabetes rabbits. Methods: Antidiabetic activity of aqueous extract of M. koenigii in 100, 200 300 mg/k doses was determined by estimating blood glucose before and at 1, 2, 4, 8, 24, and 72 hours post treatment intervals in treated rabbits. Results: Aqueous extract of Murraya koenigii showed a dose dependent antidiabetic activity with maximum effect established at 300 mg/kg. The extract also exhibited a significant (p<0.05) dosedependent hypoglycemic effect on normal and alloxan-induced diabetic rabbits. Conclusion: Murraya koenigii causes a reduction in blood glucose. This hypoglycemic property supports-its usein folkloric medicine as an antidiabetic agent and thus suggests a place for it in nutritional therapy in the management of diabetes mellitus and thus as an oral hypoglycaemic agent.
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Aims: The present study was aimed at investigating the antidiabetic potentials of Combretum dolichopetalum root in alloxan-induced animals with the hope of isolating its antidiabetic principles. Study Design: Sixty four Wistar albino rats of either sexes were randomly segregated into 16 groups (n=4). Also, thirty two albino mice were segregated into 8 groups. These received various doses of the plant sample, vehicle or glibenclamide for the antidiabetic study. Place and Duration of Study: This study was done in the laboratory of the Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka between March and October, 2013. Methodology: The root of C. dolichopetalum was extracted with methanol (ME) and fractionated successively with various solvents (n-hexane, chloroform, ethylacetate, methanol and water) to afford the respective fractions: HF, CF, EF, MF and AF. CF was further fractionated to afford six sub-fractions: C1-C6. Acute toxicity study was done using ME. Antidiabetic activity of various doses (p.o.) of ME (100, 200, 400 and 600 mg/kg body weight), its fractions (200 and 400 mg/kg) and sub-fractions (200 mg/kg), glibenclamide (0.2 mg/kg) and vehicle (control) were investigated in alloxan-induced (i.p.) diabetic animals for 9 h. Phytochemical analysis was also carried on ME and fractions. Results: The extract was considered safe with LD50 greater than 5000 mg/kg. ME (400 mg/kg), CF (400 mg/kg) and C3 (200 mg/kg) produced maximum reduction (36.78%, 72.43% and 83.17% respectively) in fasting blood glucose of animals after 9 h which were significantly (P < .01, P < .001) different from the control and better than glibenclamide (48.18%). Phytochemical analysis showed alkaloids, flavonoids, terpens and steroids as the likely antidiabetic agent(s). Conclusion: The root of C. dolichopetalum possesses potent antidiabetic activity which increases as the extract is purified. The antidiabetic effect of the plant may likely be due to the presence of alkaloids, flavonoids, terpens or steroids.
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<p><b>OBJECTIVE</b>To investigate the ameliorative role of Tetrapleura tetraptera (Schum and Thonn) Taub (T. tetraptera) leaf in hyperglycemia with associated conditions like oxidative stress, kidney damage and disorders in lipid metabolism.</p><p><b>METHODS</b>Five groups of five rats each intraperitoneally received the following treatment schedules for 7 d: untreated normal control, untreated alloxan-diabetic control, diabetic treated with glibenclamide, normal rats treated with extract (50 mg/kg) and diabetic rats treated with the extract. Evaluations were made for fasting blood sugar, body weight changes, malondialdehyde, aspartate aminotransferase, alanine aminotransferase, bilirubin, superoxide dismutase, catalase, lipid profile, packed cell volume, hemoglobin, urea and creatinine in all the rats.</p><p><b>RESULTS</b>Whereas the untreated diabetic rats showed a significant decrease (P<0.05) in packed cell volume, superoxide dismutase, catalase and high-density lipoprotein-cholesterol with a concomitant increase in the levels of malondialdehyde, fasting blood sugar, aspartate aminotransferase, alanine aminotransferase, bilirubin, urea and creatinine, administration of methanolic extract of T. tetraptera leaf or glibenclamide alleviated these altered parameters in the treated rats.</p><p><b>CONCLUSIONS</b>Methanolic extract of T. tetraptera leaves possesses a potent capacity for treatment of diabetes and the accompanying complications, including oxidative stress and hyperlipidemia.</p>
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Objective: To investigate the ameliorative role of Tetrapleura tetraptera (Schum and Thonn) Taub (T. tetraptera) leaf in hyperglycemia with associated conditions like oxidative stress, kidney damage and disorders in lipid metabolism. Methods:Five groups of five rats each intraperitoneally received the following treatment schedules for 7 d: untreated normal control, untreated alloxan-diabetic control, diabetic treated with glibenclamide, normal rats treated with extract (50 mg/kg) and diabetic rats treated with the extract. Evaluations were made for fasting blood sugar, body weight changes, malondialdehyde, aspartate aminotransferase, alanine aminotransferase, bilirubin, superoxide dismutase, catalase, lipid profile, packed cell volume, hemoglobin, urea and creatinine in all the rats. Results:Whereas the untreated diabetic rats showed a significant decrease (P Conclusions:Methanolic extract of T. tetraptera leaves possesses a potent capacity for treatment of diabetes and the accompanying complications, including oxidative stress and hyperlipidemia.