检索结果-南通市图书馆

Design of New Thiadiazole Derivatives with Improved antidiabetic activity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computational Chemistry 2023年第3期11卷 67-80页

作者： Chiépi Nadège Dominique Dou Georges Stéphane Dembele Mamadou Guy-Richard Kone Nanou Tiéba Tuo Fandia Konate Adama Niare Panaghiotis Karamanis Nahossé Ziao Laboratoire de Thermodynamique et de Physico-Chimie du Milieu Université NANGUI ABROGOUA Abidjan C&ocircte-d’Ivoire Groupe Ivoirien de Recherches en Modélisation des Maladies (GIR2M) Université NANGUI ABROGOUA Abidjan C&ocircte-d’Ivoire E2S UPPA CNRS IPREM Université de Pau et des Pays de l’Adour Pau France Laboratoire de Physique Fondamentale et Appliquée UFR SFA Université NANGUI ABROGOUA Abidjan C&ocircte-d’Ivoire

Diabetes is a serious, long-term (or chronic) disease that occurs when a person’s blood sugar levels are high because their body cannot produce enough insulin, or does not produce enough insulin or that it cannot effectively use the insulin it produces. According to the literature, this disease has several causes, but certain types of diabetes such as type 2 diabetes are most closely linked to a metabolic disorder due to abdominal obesity. Thus, the number of individuals with type 2 diabetes is increasing. It is with this in mind that we work to improve human health. The aim of this study is to design new derivatives of 1,3,4-thiadiazole with improved antidiabetic activity by the mathematical model of multiple linear regression (MLR) established previously. The analysis of the effect on the substituents influencing the antidiabetic activity, fourteen (14) new molecules coded CDTH were generated and presenting values of the potential of inhibitory concentration higher than that of the base compound (pIC50 = 2.526). But thirteen (13) of these new compounds belong to the domain of applicability of the MLR model established previously. In addition, the thermodynamic quantities of formation formed at 298K have been calculated. Lipinski’s rule and pharmacokinetic properties proved that five (5) (TH4, TH9, TH10, TH13 and TH14) new molecules can be used as diabetes medicine.

关键词： Design antidiabetic activity 1 3 4-Thiadiazole Lipinski’s Rule

Phytochemical Analysis,Estimation of Quercetin,and in Vitro Anti-Diabetic Potential of Stevia Leaves Samples Procured from Two Geographical Origins

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2022年第10期91卷 2349-2365页

作者： Kuntal Das Syed Mohammed Basheeruddin Asdaq M.Saifulla Khan Sravani Singirikonda Abdulhakeem S.Alamri Walaa F.Alsanie Majid Alhomrani Sreeharsha Nagaraja Katharigatta N.Venugopala Department of Pharmacognosy and Phytochemistry Krupanidhi College of PharmacyVarthurHobliBengaluru560035India Department of Pharmacy Practice College of PharmacyAlMaarefa UniversityDariyahRiyadh13713Saudi Arabia Department of Clinical Laboratory Sciences The Faculty of Applied Medical SciencesTaif UniversityTaif21944Saudi Arabia Centre of Biomedical Sciences Research(CBSR) Deanship of Scientific ResearchTaif UniversityTaif21944Saudi Arabia Department of Pharmaceutical Sciences College of Clinical PharmacyKing Faisal UniversityAl-HofufAl-Ahsa31982Saudi Arabia Department of Pharmaceutics Vidya Siri College of PharmacyBangalore560035India Department of Biotechnology and Food Science Faculty of Applied SciencesDurban University of TechnologyDurban4001South Africa

The current study used RP-HPLC to compare phytochemicals and estimate the bioactive constituents found in Stevia rebaudiana Bert.(SRB)leaves collected from two different geographical sources.SRB leaves were collected from Bangalore,Karnataka,India,and Reduit,Mauritius.Extracts were prepared using ethanol and aqueous solvents.Proximate analysis was used to evaluate moisture content,ash values,crude fibers,and extractive values.Following that,preliminary phytochemical screening was done on both ethanol leaves extracts,and subsequently total flavonoid content was determined.In addition,TLC chromatograms and RP-HPLC studies were performed on both plant extracts to determine the presence of flavonoid components in both leaves extracts,followed by in vitro anti-diabetic activity was performed with alpha amylase and alpha glucosidase enzymes against Acarbose as standard.Results revealed that both the extracts from two different geographical sources varied significantly with the yield,content of chemicals,and presence of quercetin(flavonoid)content when estimated through the RP-HPLC standardized method.Glycosides,flavonoids,proteins,steroids,saponins,terpenoids,and phenols were found in various concentrations during phytochemical screening.Among both zones,the ethanol leaves extract of SRB taken from Mauritius had a greater content of phytochemicals and a higher yield than other extracts due to the soil nature.The Mauritius sample had greater total flavonoid levels as well as more quercetin(0.92±0.011)than the other extracts.Following that,ethanol extract inhibited enzymes(alpha amylase,alpha glucosidases)more than aqueous extract,and this inhibition was dose dependent.Among them,the Mauritius ethanol sample showed higher anti-diabetic efficacy than the Indian sample,but this difference was not significant.Overall,SRB ethanol leaves extracts outperformed other leaves extracts in terms of yield,phytoconstituents,and total flavonoids.Overall,both SRB samples had high quercetin levels and possessed anti-diabetic potential

关键词： antidiabetic activity Stevia rebaudiana phytochemicals proximate analysis TLC RP-HPLC

Antioxidant,antimicrobial,and α-glucosidase inhibitory activities of saponin extracts from walnut(Juglans regia L.) leaves

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2023年第2期13卷 60-69页

作者： Youssef Elouafy Adil El Yadini Salma Mortada Mohamed Hnini Hicham Harhar Asaad Khalid Ashraf NAbdalla Abdelhakim Bouyahya Khang Wen Goh Long Chiau Ming My El Abbes Faouzi Mohamed Tabyaoui Laboratory of Materials Nanotechnology and EnvironmentFaculty of SciencesMohammed V University in RabatRabatMorocco Laboratories of Pharmacology and Toxicology Pharmaceutical and Toxicological Analysis Research TeamFaculty of Medicine and PharmacyMohammed V University in RabatRabatMorocco Center of Plant and Microbial Biotechnology Biodiversity and EnvironmentMicrobiology and Molecular Biology TeamFaculty of SciencesMohammed V University in RabatRabatMorocco Substance Abuse and Toxicology Research Center Jazan UniversityJazan 45142Saudi Arabia Medicinal and Aromatic Plants and Traditional Medicine Research Institute National Center for ResearchKhartoumSudan Department of Pharmacology and Toxicology College of PharmacyUmm Al-Qura UniversityMakkahSaudi Arabia Laboratory of Human Pathologies Biology Faculty of SciencesMohammed V University in RabatMorocco Faculty of Data Science and Information Technology INTI International UniversityNilaiMalaysia School of Medical and Life Sciences Sunway UniversitySunway CityMalaysia

Objective:To investigate the relationship between triterpenoid saponin content and antioxidant,antimicrobial,and α-glucosidase inhibitory activities of 70%ethanolic,butanolic,aqueous,supernate and precipitate extracts of Juglans regia leaves.Methods:Triterpenoid saponins of different Juglans regia leaf extracts were measured by the vanillin method.Antioxidant activity was evaluated against DPPH and ABTS free radicals.We also assessed α-glucosidase inhibitory and antimicrobial activities of the leaf extracts.Pearson’s correlation coefficient was evaluated to determine the correlation between the saponin content and biological activities.Results:The butanolic extract was most effective against DPPH with an IC50of 6.63μg/mL,while the aqueous extract showed the highest scavenging activity against ABTS free radical with an IC50of 42.27μg/mL.Pearson’s correlation analysis indicated a strong negative correlation (r=-0.956) between DPPH radical scavenging activity (IC50) and the saponin content in the samples examined.In addition,the aqueous extract showed the best α-glucosidase inhibitory activity compared with other extracts.All the extracts had fair antibacterial activity against Bacillus subtilis,Escherichia coli,and Klebsiella pneumoniae except for the aqueous extract.Conclusions:Juglans regia extracts show potent antioxidant,antimicrobial,and α-glucosidase inhibitory activities.There is a correlation between saponin levels in Juglans regia leaf extracts and the studied activities.However,additional research is required to establish these relationships by identifying the specific saponin molecules responsible for these activities and elucidating their mechanisms of action.

关键词： Juglans regia leaves Triterpenoid saponin Antioxidant activity DPPH ABTS antidiabetic activity α-Glucosidase Antimicrobial activity

Methanolic extract of Momordica cymbalaria enhances glucose uptake in L6 myotubes in vitro by up-regulating PPAR-γ and GLUT-4

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Natural Medicines 2014年第12期12卷 895-900页

作者： Puttanarasaiah Mahesh Kumar Marikunte V Venkataranganna Kirangadur Manjunath Gollapalle L Viswanatha Godavarthi Ashok Padmashree Institute of Information Sciences Connexios Life Sciences Pvt Ltd. J.P.Nagar Bangalore 560078 India Department of Microbiology and Biotechnology Bangalore University PES College of Pharmacy Radiant Research Services Pvt Ltd.

The present study was undertaken to evaluate the influence of the methanolic fruit extract of Momordica cymbalaria(MFMC) on PPARγ(Peroxisome Proliferator Activated Receptor gamma) and GLUT-4(Glucose transporter-4) with respect to glucose transport. Various concentrations of MFMC ranging from 62.5 to 500 μg·mL-1 were evaluated for glucose uptake activity in vitro using L6 myotubes, rosiglitazone was used as a reference standard. The MFMC showed significant and dose-dependent increase in glucose uptake at the tested concentrations, further, the glucose uptake activity of MFMC(500 μg·mL-1) was comparable with rosigilitazone. Furthermore, MFMC has shown up-regulation of GLUT-4 and PPARγ gene expressions in L6 myotubes. In addition, the MFMC when incubated along with cycloheximide(CHX), which is a protein synthesis inhibitor, has shown complete blockade of glucose uptake. This indicates that new protein synthesis is required for increased GLUT-4 translocation. In conclusion, these findings suggest that MFMC is enhancing the glucose uptake significantly and dose dependently through the enhanced expression of PPARγ and GLUT-4 in vitro.

关键词： Momordica cymbalaria Diabetes Glucose transport PPARγ L6 myotubes antidiabetic activity

Hairless canary seeds (Phalaris canariensis L.) as a potential source of antioxidant, antihypertensive, antidiabetic, and antiobesity biopeptides

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Food Production, Processing and Nutrition

Food Production, Processing and Nutrition 2021年第1期3卷 80-91页

作者： U.C.Urbizo-Reyes J.E.Aguilar-Toalá A.M.Liceaga Protein Chemistry and Bioactive Peptides Laboratory Department of Food SciencePurdue University745 Agriculture Mall DriveWest LafayetteIN 47907USA

Rising consumer concerns with synthetic drugs to treat non-communicable diseases(NCDs)have promoted a shift towards using natural biological active constituents that offer similar health benefits.Hairless canary seed(Phalaris canariensis L)is an emerging crop traditionally used in Mexico to treat NCDs.Peptides liberated during simulated digestion of canary seed protein are believed to be responsible for their biological activity;however,no studies have shown the effect of controlled protein hydrolysis using commercial proteases on canary seed protein’s biological activity.Therefore,this study aimed to explore the in vitro antihypertensive,antidiabetic,and anti-obesity activity of canary seed peptides derived from proteolysis with Alcalase®.Protein fractions were primarily composed of prolamins(54.07±1.8%),glutelins(32.19±3.18%),globulins(5.97±0.52%)and albumins(5.97±0.52%).Theactivity against DPPH(134.22–150.66μmol TE/mg)and ABTS(520.92–813.33μmol TE/mg).These results provide an insight into the potential development of functional foods using commercial enzymatic hydrolysis of canary seed proteins for treating hypertension,type-2 diabetes,and obesity.

关键词： Canary seeds Bioactive peptides Anti-obesity activity Antihypertensive activity antidiabetic activity

Antihyperglycemic and antihyperlipidemic activities of wild musk melon (Cucumis melo var. agrestis) in streptozotocin-nicotinamide induced diabetic rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Herbal Medicines 2020年第4期12卷 399-405页

作者： K.Gopalasatheeskumar G.Ariharasivakumar V.K.Kalaichelvan T.Sengottuvel V.Sanish Devan V.Srividhya Department of Pharmacy Annamalai UniversityChidambaram 608002India Department of Pharmacology KMCH College of PharmacyTamil Nadu Dr.M.G.R.Medical UniversityCoimbatore 641048India

Objective:Wild musk melon(Cucumis melo var.agrestis,CMA)is one of the edible plants form Tamil Nadu.Traditionally,this plant was used as diabetic diet(leaves of CMA with Momordica charantia leaves),but there is no scientific report on antidiabetic action of this plant material.Hence,the current research work was designed to evaluate the antihyperglycemic and antihyperlipidemic effect of hydroalcoholic extract of CMA leaves(HALEC)in streptozotocin(STZ)-nicotinamide(NIC)-induced diabetic rats.Methods:Diabetes was induced by administration of STZ(60 mg/kg,i.p.)after 15 min of NIC(120 mg/kg i.p.)administration.The diabetic rats were treated with HALEC(300 and 600 mg/kg,p.o.,respectively)for 21 d.Results:After the management with HALEC,blood glucose,HbA1c levels,total cholesterol,LDL cholesterol,triglycerides levels,glycogen phosphorylase and glucose-6-phosphatase levels were significantly diminished in diabetic rats.However,haemoglobin level,HDL cholesterol,liver glycogen,total protein,hexokinase,glucose-6-phosphate dehydrogenase levels were significantly increased in HALEC treated diabetic rats.The histopathological studies of the pancreas in HALEC-treated diabetic rats showed almost normal appearance.L6 cell line study revealed the increased glucose uptake activity of HALEC.High performance thin layer chromatography(HPTLC)analysis confirms the presence of active principles such as rutin,gallic acid and quercetin in HALEC.Conclusion:The results indicated that HALEC possess significant antihyperglycemic and antihyperlipidemic activity in STZ-NIC-induced typeⅡdiabetic rats with protective effect.This research work will be useful for the isolation of active principles and development of herbal formulation in phytopharmaceuticals.

关键词： antidiabetic activity catalase Cucumis melo L.var.agrestis Nuad. diabetes hypolipidemic activity L6 cell line lipid pancreas rutin

Physicochemical Properties and Bioactivities of Rice Beans Fermented by Bacillus amyloliquefaciens

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Engineering 2021年第2期7卷 219-225页

作者： Shan Wu Shuai Lu Jun Liu Shaoqing Yang Qiaojuan Yan Zhengqiang Jiang Key Laboratory of Food Bioengineering(China National Light Industry) College of EngineeringChina Agricultural UniversityBeijing 100083China Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China

The purpose of this study was to investigate the physicochemical properties and bioactivities of rice beans(Vigna umbellata)fermented by Bacillus amyloliquefaciens.The fermentation conditions were optimized on the basis of the fibrinolytic activity.Under the optimal fermentation conditions,the fibrinolytic activity reached a maximum of 78.0 FU·g^(-1)(4890 IU·g^(-1),fibrin plate method,FU:fibrin degradation unit).The contents of peptides(which increased from 2.1 to 10.9 g per 100 g),total phenolics(from 116.7 to 388.5 mg gallic acid per 100 g),total flavonoids(from 235.5 to 354.3 mg rutin per 100 g),and anthocyanin(from 20.1 to 47.1 mg per 100 g),as well as the superoxide dismutase activity(from 55.3 to 263.6 U·g^(-1))in rice beans were significantly increased after fermentation.The 2,2-diphenyl-1-picrylhydrazyl(DPPH)and 2,2-azinobis(3-ethylbenzothiazoline-6-sulphonic acid)diammonium salt(ABTS)free radical scavenging activities and ferric reducing antioxidant power(FRAP)of fermented rice beans were 1.9–4.8 times higher than those of unfermented rice beans.Moreover,fermentation induced an increase in the dipeptidyl peptidase IV(DPP-IV)inhibition,a-glucosidase inhibition,and anticoagulant activities of rice beans.Rice beans fermented by Bacillus amyloliquefaciens may serve as a functional food with potential benefits for the prevention of thrombotic diseases.

关键词： Solid-state fermentation Rice beans Bacillus amyloliquefaciens Antithrombotic activity Antioxidant activity antidiabetic activity

Improved performance of naringenin herbosomes over naringenin in streptozotocin- induced diabetic rats: In vitro and in vivo evaluation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2021年第9期11卷 385-393页

作者： Ruthvika Joshi Ankit P.Laddha Yogesh A.Kulkarni Sarika Wairkar Shobhaben Pratapbhai Patel School of Pharmacy&Technology Management SVKM's NMIMSV.L.Mehta RoadVile Parle(W)Mumbai.Maharashtra-400056India

Objective:To prepare naringenin herbosome and evaluate its antidiabetic activity.Methods:Herbosomes were prepared by the solvent evaporation method.In vitro parameters like particle size,polydispersity index,zeta potential,and entrapment efficiency were estimated and in vitro diffusion study was performed.The in vivo studies were also performed in streptozotocin-induced diabetic male Sprague Dawley rats to evaluate blood glucose,total cholesterol,triglyceride,blood urea nitrogen,total protein,albumin level,aspartate aminotransferase,and alanine aminotransferase levels.Results:The optimized herbosome batch showed a particle size of 564.4 nm,a polydispersity index of 0.412,and zeta potential of−39.3 mV.The percentage entrapment of this formulation was 84.04%,with complete drug release within 8 h.Treatment of diabetic rats with naringenin herbosomes for 28 d significantly reduced the elevated level of plasma glucose as compared to plain naringenin.In biochemical parameters,the treatment showed a significant decrease in total cholesterol,triglyceride,and blood urea nitrogen;while elevated levels of aspartate aminotransferase and alanine aminotransferase were returned to normal.Pure naringenin and herbosome formulation at high dose increased the total protein whereas albumin level significantly increased in naringenin herbosomes at the highest dose but not in the pure naringenin treatment group.Conclusions:Naringenin herbosomes could improve the metabolic profile of diabetic rats,indicating enhanced antidiabetic activity of herbosome formulation.

关键词： Naringenin Herbosomes Blood glucose level Biochemical parameters antidiabetic activity

Ultrasound-assisted intensified aqueous extraction of phenolics from waste Syzygium cumini leaves:Kinetic studies and evaluation of antioxidant,antidiabetic and anticancer potential

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Bioscience 2022年第2期46卷 594-604页

作者： Komal V.Mahindrakar Virendra K.Rathod Department of Chemical Engineering Institute of Chemical TechnologyMatunga(E)Mumbai400019India

This is the first report illustrating the extraction of total phenolic compounds(TPC)using the ultrasound-assisted aqueous extraction(USAE)technique from waste Syzygium cumini leaves(WSCL).A kinetic study indicated that Peleg’s model was appropriately fitted to the experimental data when the effect of different parameters was checked on extraction with respect to time.Extraction yields of total phenolic contents(TPC)and total flavonoid contents(TFC)were 78.38 mg GAE/g,and 10.15 mg CE/g,respectively,at optimized parameters of 1:25 WSCL:water,35℃ temperature,134 W power,50%duty cycle and in 9 min of sonication time.Cumulative yields of TPC and TFC obtained by 5 sequential stirred batch extraction were 79.36 mg GAE/g and 10 mg CE/g,respectively.The cost and energy requirement of the USAE process was around 3000 times less than that of the Soxhlet technique.SEM images showed the changes in the morphology of the WSCL surface area before and after ultrasonic extraction.FTIR analysis showed the presence of O-H,N-H,C-H,C=C,and halogenated functional groups.The obtained WSCL extract showed antioxidant potential with an IC_(50) value of 15.64μg/mL.IC_(50) values of extract forα-amylase andα-glucosidase inhibitions were 8.3 and 6.64μg/mL.Antiproliferation activity against breast,cervical,and lung cancer showed the potential with GI50 values 252.8,112.5,and 97.8μg/mL,respectively.Aqueous extract of Syzygium cumini leaves can be used to treat oxidative stress,diabetes,and cancer.

关键词： Syzygium cumini leaves Ultrasound-assisted extraction Antioxidant phenolic compounds Anticancer activity antidiabetic activity