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| 1 | A comparative study on the antioxidant activity of methanolic leaf extracts of Ficus religiosa L,Chromolaena odorata(L.) King & Rabinson,Cynodon dactylon(L.) Pers.and Tridax procumbens L.显示文摘Objective:To compare the antioxidative effects of the methanolic leaf extracts of Ficus religiosa (F.religiosa),Chromolaena odorata(C.odorata),Cynodon dactylon(C.dactylon) and Trida,x procumbens(T.procumbens) as well as the contents of antioxidants in the extracts.Methods: Total phenol and total flavanoid contents were measured according to the standard procedures. The total antioxidant capacity was determined using the phosphomolybdenum method.Reducing power was determined by the potassium ferrieyanide reducing method.The free radical scavenging activity was measured by 2,2’-Diphenyl-l-picrylhydrazyl(DPPH) assay.Results: Quantitative phytochemical analysis of total phenol content showed that C.odorata had the highest content of phenolic compounds significantly followed by F.religiosa,T.procumbens and C.dactylon.As for the total flavanoids content,F.religiosa had the highest content,followed by C.odorata,T.procumbens and C.daxtylon.Study on the total antioxidant capacity revealed that F.religiosa,C.dactylon and C.odorata showed higher total antioxidant capacity.T.procumbens showed the lowest capacity.Meanwhile,T.procumbens and C.odorata have the highest reducing power activity followed by F.religiosa and C.dactylon.The results of DPPH radical scavenging activity indicated that T.procumbens induced the largest elevation as the concentration of its extract increased,followed by C.odorata and F.religiosa and C.dactylon.Conclusions:The present study demonstrates the antioxidative capacity of all the four plant species.Of all the plants,C.odorata,a perennial weed plant showed potentially a high antioxidant activity,with higher phenolic and flavonoids contents.The data suggest that C.odorata can be best utilized in developing bioantioxidants. | Melinda Krishanti P Xavier Rathinam Marimuthu Kasi Diwakar Ayyalu Ramanathan Surash Kathiresan Sadasivam Sreeramanan Subramaniam | 2010 | Asian Pacific Journal of Tropical Medicine2010，3，5： | 6 |
| 2 | rate of adverse events of gastroduodenal snare polypectomy for non-flat polyp is low: A prospective and multicenter study显示文摘AIM To evaluate the rate of adverse events(AEs) during consecutive gastric and duodenal polypectomies in several Spanish centers. METHODS Polypectomies of protruded gastric or duodenal polyps ≥ 5 mm using hot snare were prospectively included. Prophylactic measures of hemorrhage were allowed in predefined cases. AEs were defined and graded according to the lexicon recommended by the American Society for Gastrointestinal Endoscopy. Patients were followed for 48 h, one week and 1 mo after theprocedure. RESULTS308 patients were included and a single polypectomy was performed in 205. Only 36(11.7%) were on prior anticoagulant therapy. Mean polyp size was 15 ± 8.9 mm(5-60) and in 294 cases(95.4%) were located in the stomach. Hemorrhage prophylaxis was performed in 219(71.1%) patients. Nine patients presented AEs(2.9%), and 6 of them were bleeding(n = 6, 1.9%)(in 5 out of 6 AE, different types of endoscopic treatment were performed). Other 24 hemorrhagic episodes could be managed without any change in the outcome of the endoscopy and, consequently, were considered incidents. We did not find any independent risk factor of bleeding.CONCLUSION Gastroduodenal polypectomy using prophylactic measures has a rate of AEs small enough to consider this procedure a safe and effective method for polyp resection independently of the polyp size and location. | Henry Córdova Lidia Argüello Carme Loras Antonio Naranjo Rodríguez Faust Riu Pons Joan B Gornals David Nicolás-Pérez Xavier Andújar Murcia Luis Hernández Santos Santolaria Carles Leal Carles Pons Enrique Pérez-Cuadrado-Robles Orlando García-Bosch Michel Papo Berger José Luis Ulla Rocha Cristina Sánchez-Montes Gloria Fernández-Esparrach | 2017 | World Journal of Gastroenterology2017，23，47： | 3 |
| 3 | Chemical Coal Cleaning Using Selective Oxidation显示文摘 | Stephen R P Edwin J H Xavier A D | 1994 | Fuel1994，73，2： | 1 |
| 4 | Mineral chemistry of ore and hydrothermal alteration an the sossego oirn ox- ide-copper-gold deposit, Carajas Mineral Province, Brazil 显示文摘 | Monteiro L V S Xavier R P Hitzman M W | 2008 | Ore Geology Reviews2008，34，： | 1 |
| 5 | Microstructure,mechanical Properties and wearresistance of high speedsteel rolls for hot rolling mills 显示文摘 | Carvalho M A De Xavier R R Filho C S P | 2002 | I& SM2002，29，1： | 1 |
| 6 | Effect of fixed dose combinations of metoprolol and amlodipine in essential hyper- tension: MARS- -a randomized controlled trial 显示文摘 | Devi P Xavier D Sigarnani A | 2011 | Blood Press Suppl2011，2，： | 1 |
| 7 | Influence of β-cyclodextrin complexation on carbamazepine release from hydroxypro-pyl methylcellulose matrix tablets显示文摘 | Xavier CR Mayorga P | 2003 | Eur J Pharm Biopharm2003，55，1： | 1 |
| 8 | The influence of e- lastic modulus of inlay material on stress distribution and fracture of premolars 显示文摘 | Costa A Xavier T Noritomi P | 2014 | Oper Dent2014，39，4： | 1 |
| 9 | Phosphatidylinositol-3 kianse inhibitors block differentiation of skeletal muscle cell显示文摘 | Francesc V Xavier T | 1996 | Biol Chem1996，271，19： | 1 |
| 10 | Paraffin/porous graphite matrix composite as a high and constant power thermal storage material 显示文摘 | Xavier P Regis O Sylvain M | 2001 | International Journal of Heat and Mass Transfer2001，44，14： | 1 |
| 11 | A Geographical Information System (GIS) Atlas of cephalopod distribution in the Southern Ocean 显示文摘 | Xavier J C Rodhouse P G Trathan P N | 1999 | Antarct Sci1999，11，1： | 1 |
| 12 | Towards next generation regulation 显示文摘 | D Ypsilanti P Xavier | 1998 | Telecommunications Policy1998，，22： | 1 |
| 13 | Aspergillosis:A limiting factor during recovery of captive magellanic penguins显示文摘 | Xavier M O Soares M P Meinerz R M | 2007 | Brazilian J Microbiol2007，，38： | 1 |
| 14 | Efficacy and tolerability of fluvastatin extended-release delivery system:A pooled analysis显示文摘 | Ballantyne CM Pazzucconi F Xavier P | | 0，，02： | 1 |
| 15 | Surface acoustic wave MEMS gyroscope显示文摘 | Jose K A Sub W D Xavier P B | 2002 | Wave Motion2002，，36： | 1 |
| 16 | Zeolite as efficient catalysts for key transformations in carbohydrate chemistry 显示文摘 | Xavier Nuno M Lucas Susana D Rauter Amelia P | 2009 | Journal of Molecular Catalysis A: Chemical2009，305，12： | 1 |
| 17 | Population structure and systematics of Opsariichthys bidens in south-east China using a new nuclear marker:the introns (EPIC-PCR)显示文摘 | Berrebi P Xavier X Fang F | 2006 | Biological Journal of the Linnean Society2006，87，1： | 1 |
| 18 | Edometriosis:elinical aspects:sub and endometrial blood flow in patients with endometriosis显示文摘 | Xavier P Beires J | 2004 | Hum Reprod2004，19，： | 1 |
| 19 | Static response of unsymmetrical sandwich beams using an improved zig-zag model 显示文摘 | LEE K H XAVIER P B CHEW C H | 1993 | Composites Engineering1993，3，3： | 1 |
| 20 | Antiviral therapy increases the risk of bacterial infections in HCV-infected cirrhotic patients awaiting liver transplantation: A retrospective study显示文摘 | Jose A. Carrión Eva Martínez-Bauer Gonzalo Crespo Santseharay Ramírez Sofia Pérez-del-Pulgar Juan Carlos García-Valdecasas Miquel Navasa Xavier Forns | 2009 | Journal of Hepatology2009，，4： | 1 |
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