scholarly journals Inhibition of Haemoglobin Glycosylation, Glucose Uptake and In Vitro Antidiabetic Activities of Solvent Fractions from Daucus carota Seed

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Habibu Tijjani ◽  
Sadiq Adamu Imam
Keyword(s):  
Diabetes Mellitus ◽  
Glucose Uptake ◽  
Daucus Carota ◽  
Inhibitory Activity ◽  
Seed Extract ◽  
Insulin Deficiency ◽  
Inhibitory Effects ◽  
Organ Systems ◽  
Treatment Of Diabetes

Abstract Diabetes mellitus (DM) is a metabolic disorder which result from either absolute or relative insulin deficiency and may lead to dysfunction in some organ systems. Pancreatic α- glucosidase and α- amylase inhibition are an effective strategy to decrease levels of postprandial hyperglycemia through starch control breakdown. The aim of the study is to assess the in vitro antidiabetic activities of fractions from Daucus carota seed extract, a plant used traditionally for the treatment of diabetes mellitus. The aqueous extract (AQE) of Daucus carota seed was partitioned in ethyl acetate (EAE), n – hexane (HEX) and diethyl ether (DEE) to obtain the various fractions. The AQE and EAE expressed significant α – amylase inhibitory activity with IC50 values of 637.0±18.6 μg/mL and 603.0±25.8 μg/mL respectively. AQE, EAE, HEX and DEE expressed α – glucosidase inhibitory activity with IC50 value of 135.85±1.21, 147.59±0.57, 132.64±1.17, and 143.56±0.49 μg/mL respective compared with acarbose (ACA) with 5.42±0.20 μg/mL. Furthermore, DEE fraction expressed inhibitory effects on % glucose uptake in yeast cell comparable with metronidazole. All Daucus carota fractions expressed various inhibitory effects on haemoglobin glycosylation at a concentration of 200 – 1000 μg/mL. The results show that fractions from the aqueous seed extract of Daucus carota possess in vitro antidiabetic potentials with EAE and HEX fractions having most promising inhibitory activities against α-amylase and α-glucosidase respectively.

scholarly journals Preliminary in vitro study of anti-oxidant activity and anti-diabetic potential of plant extracts from 4 herbal substances not traditionally used for treatment of diabetes mellitus

Pharmacia ◽  
2021 ◽  
Vol 68 (4) ◽  
pp. 755-762
Author(s):  
Dora Trifonova ◽  
Anna Gavrilova ◽  
Galina Dyakova ◽  
Genadi Gavrilov ◽  
Maya Yotova ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Inhibitory Activity ◽  
In Vitro Study ◽  
Biologically Active ◽  
Total Phenolic ◽  
Water Extracts ◽  
Sambucus Ebulus ◽  
Anti Oxidant ◽  
Treatment Of Diabetes

The focus of the presented study is the in vitro anti-oxidant activity and anti-diabetic potential of water extracts from the following four herbal substances, not traditionally used for treatment of diabetes mellitus – leaves of Sambucus ebulus L. and Prunus mahaleb L., and flowering stems of Cichorium intybus L. and Satureja kitaibelii Wierzb. ex Heuff. The water extracts are obtained through ultrasonication. The extract of S. kitaibelii stands out due to its highest values in all studied indicators – total phenolic content, scavenging potential (DPPH, ABTS) and α-glucosidase inhibitory activity which was six times higher than acarbose. The extract of C. intybus also showed significant α-glucosidase inhibitory activity compared to acarbose. The flowering stems of both species are promising sources of biologically active substances for blood sugar control in diabetes mellitus.

scholarly journals Phytochemical evaluation and in vitro antidiabetic efficiency of isopropanolic leaf extract of pimenta racemosa

2020 ◽  
Vol 7 (2) ◽  
pp. 50-55
Author(s):  
Anitha T A ◽  
Pakutharivu T ◽  
Nirubama K ◽  
Akshaya V
Keyword(s):  
Diabetes Mellitus ◽  
Glucose Uptake ◽  
Inhibitory Activity ◽  
Leaf Extract ◽  
Yeast Cells ◽  
Antidiabetic Activity ◽  
Leaf Extracts ◽  
Pimenta Racemosa

The traditional herbal medicines are mainly obtained from plants are used in the management of Diabetes mellitus. The main objective of this work was to assess the presence of phytochemical compounds and to evaluate the in vitro antidiabetic activity of isopropanolic extracts of Pimenta racemosa leaves by studying their α-amylase inhibitory activity and glucose transport across yeast cells. Screening of phytochemicals showed positive results for alkaloids, steroids, cardiac glycosides, terpenoids, reducing sugars, anthraquinones, and results of in vitro α-amylase inhibitory studies demonstrated there was a dose-dependent increase in percentage inhibitory activity by the isopropanolic leaf extracts of Pimenta racemosa. At a concentration of 1 mg/ml, the extract showed a percentage inhibition 33.6 and for 5 mg/ml it was 91.2. The glucose uptake study was also studied through yeast cells by analyzing theamount of glucose remaining in the medium after a specific time intervals. It serves as an indicator for the capability of isopropanolic leaf extracts of Pimenta racemosa to transport the glucose into yeast cells. As a result, we found that the isopropanolic leaf extract of Pimenta racemosa have inhibitory activity against αamylase and also, which is efficient in glucose uptake. This therapeutic potentiality of Pimenta racemosa could be exploited in the treatment of Type 2 Diabetes mellitus. Further studies are also required to elucidate whether the plant have antidiabetic potential by in vivo for corroborating the traditional claim of the plant.

scholarly journals IN VITRO ANTIDIABETIC EFFECTS OF FERULA ASSA-FOETIDA EXTRACTS THROUGH DIPEPTIDYL PEPTIDASE IV AND α-GLUCOSIDASE INHIBITORY ACTIVITY

2017 ◽  
Vol 10 (5) ◽  
pp. 357 ◽  
Author(s):  
Adel Yarizade ◽  
Hsan Hasani Kumle ◽  
Ali Niazi
Keyword(s):  
Diabetes Mellitus ◽  
Inhibitory Activity ◽  
Postprandial Glucose ◽  
Dipeptidyl Peptidase ◽  
Dipeptidyl Peptidase Iv ◽  
Dpp Iv ◽  
Glucosidase Inhibitors ◽  
Treatment Of Diabetes ◽  
Ethanol Ethanol

Objective: Diabetes mellitus (DM) causes hyperglycemia, which is one of the most common diseases in the world. One of the strategies for the treatment of diabetes is maintaining postprandial glucose level through inhibition of dipeptidyl peptidase IV (DPP-IV) and α-glucosidase enzymes. The aim of this study was to determine in vitro antidiabetic potential of Ferula assa-foetida via DPP-IV and α-glucosidase inhibitory activities.Methods: F. assa-foetida seeds were extracted in methanol, ethanol, ethanol-methanol, and water. Inhibitory activity on DPP-IV and α-glucosidase wasperformed in vitro and measured spectrophotometrically at λ=405 nm.Results: The result showed that the F. assa-foetida seed extract is effective against both enzymes. All fractions had DPP-IV inhibitory activity, but the ethanolic fraction had the highest inhibitory activity on DPP-IV enzyme and significantly decreased DPP-IV activity (24.5%). With respect to α-glucosidase inhibitory activity, the aqueous extract has the highest inhibitory activity (28%).Conclusion: According to the results of this study, F. assa-foetida contains DPP-IV and α-glucosidase inhibitors and could be a potential source for the discovery of active constituents as α-glucosidase and DPP-IV inhibitors to treat Type 2 DM.Keywords: Diabetes mellitus, Herbal medicine, Dipeptidyl peptidase IV, α-glucosidase.

scholarly journals Evaluating the Inhibitory Effects of Dichloromethane and Methanol Extracts of Salvia macilenta and Salvia officinalis on the Diabetes Marker Enzyme, Alpha-Glucosidase: An Approach for the Treatment of Diabetes

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Hassan Javid ◽  
Soheila Moein ◽  
Mahmood Reza Moein
Keyword(s):  
Glucose Uptake ◽  
Methanol Extract ◽  
Inhibitory Effect ◽  
Salvia Officinalis ◽  
Marker Enzyme ◽  
Inhibitory Effects ◽  
Methanol Extracts ◽  
Treatment Of Diabetes ◽  
Alpha Glucosidase

Background: Diabetes mellitus is believed to be the most serious metabolic disease. One of the treatments for diabetes is to delay glucose uptake by inhibiting carbohydrate-hydrolyzing enzymes. Alpha-glucosidase inhibitors delay glucose uptake. Objectives: The present study was conducted aiming to evaluate the efficacy of Salvia extracts in inhibiting diabetes marker enzymes and their effects on the treatment of diabetes. Methods: This experimental study was performed in vitro. The studied plants included Salvia macilenta and Salvia officinalis. The inhibitory effects of their dichloromethane and methanol extracts were also investigated. After calculating the percentage of inhibition and IC50, Km and Vmax using GraphPad Prism 7 were also calculated. The statistical analysis was performed employing GraphPad Instat 3 software. Results: The results herein showed that the greatest inhibitory effect on alpha-glucosidase belonged to the methanol extract of S. macilenta with IC50 = 8.73 ± 0.26 mg/mL compared to that of acarbose with IC50 = 8.82 ± 0.14 mg/mL as a standard. The IC50 of dichloromethane extract of S. officinalis was 8.95 ± 0.23 mg/mL. Conclusions: The extracts had significant inhibitory effects on alpha-glucosidase. However, methanol extract of S. macilenta and dichloromethane extract of S. officinalis demonstrated the greatest inhibitory effects on alpha-glucosidase compared to acarbose as a standard.

Inhibitory effects of bioaccessible anthocyanins and procyanidins from apple, red grape, cinnamon on α-amylase, α-glucosidase and lipase

2020 ◽  
pp. 1-9
Author(s):  
Pınar Ercan ◽  
Sedef Nehir El
Keyword(s):  
Inhibitory Activity ◽  
Digestive Enzymes ◽  
Positive Control ◽  
Anthocyanin Content ◽  
Inhibitory Effects ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
Before And After ◽  
Red Grape

Abstract. The goals of this study were to determine and evaluate the bioaccessibility of total anthocyanin and procyanidin in apple (Amasya, Malus communis), red grape (Papazkarası, Vitis vinifera) and cinnamon (Cassia, Cinnamomum) using an in vitro static digestion system based on human gastrointestinal physiologically relevant conditions. Also, in vitro inhibitory effects of these foods on lipid (lipase) and carbohydrate digestive enzymes (α-amylase and α-glucosidase) were performed with before and after digested samples using acarbose and methylumbelliferyl oleate (4MUO) as the positive control. While the highest total anthocyanin content was found in red grape (164 ± 2.51 mg/100 g), the highest procyanidin content was found in cinnamon (6432 ± 177.31 mg/100 g) (p < 0.05). The anthocyanin bioaccessibilities were found as 10.2 ± 1%, 8.23 ± 0.64%, and 8.73 ± 0.70% in apple, red grape, and cinnamon, respectively. The procyanidin bioaccessibilities of apple, red grape, and cinnamon were found as 17.57 ± 0.71%, 14.08 ± 0.74% and 18.75 ± 1.49%, respectively. The analyzed apple, red grape and cinnamon showed the inhibitory activity against α-glucosidase (IC50 544 ± 21.94, 445 ± 15.67, 1592 ± 17.58 μg/mL, respectively), α-amylase (IC50 38.4 ± 7.26, 56.1 ± 3.60, 3.54 ± 0.86 μg/mL, respectively), and lipase (IC50 52.7 ± 2.05, 581 ± 54.14, 49.6 ± 2.72 μg/mL), respectively. According to our results apple, red grape and cinnamon have potential to inhibit of lipase, α-amylase and α-glucosidase digestive enzymes.

scholarly journals Machine Learning and In Vitro Chemical Screening of Potential α-Amylase and α-Glucosidase Inhibitors from Thai Indigenous Plants

Nutrients ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 267
Author(s):  
Tarapong Srisongkram ◽  
Sasisom Waithong ◽  
Thaweesak Thitimetharoch ◽  
Natthida Weerapreeyakul
Keyword(s):  
Diabetes Mellitus ◽  
Machine Learning ◽  
Inhibitory Activity ◽  
In Vitro Study ◽  
Ethanolic Extract ◽  
Accuracy Score ◽  
Indigenous Plants ◽  
Predisposing Factor ◽  
Chemical Screening

Diabetes mellitus is a major predisposing factor for cardiovascular disease and mortality. α-Amylase and α-glucosidase enzymes are the rate-limiting steps for carbohydrate digestion. The inhibition of these two enzymes is clinically used for the treatment of diabetes mellitus. Here, in vitro study and machine learning models were employed for the chemical screening of inhibiting the activity of 31 plant samples on α-amylase and α-glucosidase enzymes. The results showed that the ethanolic twig extract of Pinus kesiya had the highest inhibitory activity against the α-amylase enzyme. The respective ethanolic extract of Croton oblongifolius stem, Parinari anamense twig, and Polyalthia evecta leaf showed high inhibitory activity against the α-glucosidase enzyme. The classification analysis revealed that the α-glucosidase inhibitory activity of Thai indigenous plants was more predictive based on phytochemical constituents, compared with the α-amylase inhibitory activity (1.00 versus 0.97 accuracy score). The correlation loading plot revealed that flavonoids and alkaloids contributed to the α-amylase inhibitory activity, while flavonoids, tannins, and reducing sugars contributed to the α-glucosidase inhibitory activity. In conclusion, the ethanolic extracts of P. kesiya, C. oblongifolius, P. anamense, and P. evecta have the potential for further chemical characterization and the development of anti-diabetic recipes.

scholarly journals Antioxidant Properties and Digestive Enzyme Inhibitory Activity of the Aqueous Extract from Leafy Stems of Cissus polyantha

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Mahamad Abba Talba ◽  
David Miaffo ◽  
Sylviane Laure Poualeu Kamani ◽  
Albert Kamanyi ◽  
Sylvie Léa Wansi
Keyword(s):  
Traditional Medicine ◽  
Aqueous Extract ◽  
Inhibitory Activity ◽  
Antiradical Activity ◽  
Digestive Enzyme ◽  
Antioxidant Properties ◽  
Antioxidant Potential ◽  
Antioxidant Power ◽  
Treatment Of Diabetes

Cissus polyantha (Vitaceae) is a plant used in Cameroonian traditional medicine for the treatment of diabetes. The aims of this study were to evaluate the in vitro antioxidant and antidiabetic activities of the aqueous extract of Cissus polyantha leafy stems. The enzyme inhibitory activity was determined in vitro on α-amylase and α-glucosidase enzymes, followed by confirmative study in vivo on normal rats (oral starch and sucrose tolerance tests at doses of 111, 222, and 444 mg/kg). The ferric reducing antioxidant power and the 2,2-diphenyl-1-picrylhydrazyl (DPPH) antiradical activity of the extract were examined to evaluate the antioxidant potential of the extract. The total content of phenols, flavonoids, and tannins of the extract were also determined. The results showed an inhibitory effect of the extract on the α-amylase and α-glucosidase activities with IC50 values of 216.14 and 182.40 μg/mL, respectively. The extract at doses of 222 and 444 mg/kg induced a significant decrease in postprandial glycaemia during the starch and sucrose tolerance tests. A remarkable antiradical activity of the extract was obtained although lower than that of the standard product. The aqueous extract of leafy stems of Cissus polyantha has an interesting inhibitory activity on the α-amylase and α-glucosidase enzymes, as well as an antioxidant potential, thus validating its use in traditional medicine for the treatment of diabetes mellitus and its complications.

scholarly journals Antidiabetic Mechanisms of Rosa canina Fruits

2016 ◽  
Vol 22 (1) ◽  
pp. 127-133 ◽  
Author(s):  
Ali Fattahi ◽  
Fatemeh Niyazi ◽  
Behzad Shahbazi ◽  
Mohammad Hosein Farzaei ◽  
Gholamreza Bahrami
Keyword(s):  
Diabetes Mellitus ◽  
Cell Line ◽  
Mechanism Of Action ◽  
Glucose Absorption ◽  
Rosa Canina ◽  
Glucose Diffusion ◽  
Treatment Of Diabetes ◽  
Hepatocellular Carcinoma Cell Line ◽  
Natural Agent

Rosa canina fruits have been used traditionally for the treatment of diabetes mellitus and its complications. The aim of current study was to evaluate the in vitro mechanism of action of R canina in managing diabetes mellitus. Cell proliferation and cytotoxicity assay were performed on pancreatic β-cells, βTC6. The protective activity of the extract on streptozotocin-induced death in βTC6 cells was studied. The effect of R canina on the metabolism of glucose in HepG2, a hepatocellular carcinoma cell line, was evaluated. The effect of the extract on glucose diffusion across the dialysis membrane, which is a comfortable model for assessing cellular glucose absorption, was evaluated. The results obtained from current study confirmed that R canina extract can act as a growth factor for pancreatic β-cell line providing a novel mechanism for the observed antidiabetic effect of this natural agent. Further preclinical studies are necessary to evaluate the perfect mechanism of action of R canina in diabetes mellitus.

scholarly journals Self-Inhibitory Activity of Trichoderma Soluble Metabolites and Their Antifungal Effects on Fusarium oxysporum

2020 ◽  
Vol 6 (3) ◽  
pp. 176
Author(s):  
Samuel Álvarez-García ◽  
Sara Mayo-Prieto ◽  
Santiago Gutiérrez ◽  
Pedro Antonio Casquero
Keyword(s):  
Fusarium Oxysporum ◽  
Inhibitory Activity ◽  
Inhibitory Effects ◽  
Trichoderma Spp ◽  
Macroscopic Structure ◽  
Biocontrol Activity ◽  
Microbial Strains ◽  
Phytopathogenic Microorganisms

Self-inhibitory processes are a common feature shared by different organisms. One of the main mechanisms involved in these interactions regarding microorganisms is the release of toxic diffusible substances into the environment. These metabolites can exert both antimicrobial effects against other organisms as well as self-inhibitory ones. The in vitro evaluation of these effects against other organisms has been widely used to identify potential biocontrol agents against phytopathogenic microorganisms. In the present study, we performed membrane assays to compare the self-inhibitory effects of soluble metabolites produced by several Trichoderma isolates and their antifungal activity against a phytopathogenic strain of Fusarium oxysporum. The results demonstrated that Trichoderma spp. present a high self-inhibitory activity in vitro, being affected in both their growth rate and the macroscopic structure of their colonies. These effects were highly similar to those exerted against F. oxysporum in the same conditions, showing no significant differences in most cases. Consequently, membrane assays may not be very informative by themselves to assess putative biocontrol capabilities. Therefore, different methods, or a combination of antifungal and self-inhibitory experiments, could be a better approach to evaluate the potential biocontrol activity of microbial strains in order to pre-select them for further in vivo trials.

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