Abrus
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Effect of petroleum ether and ethanol fractions of seeds of Abrus precatorius on androgenic alopecia
Seeds of Abrus precatorius L., Fabaceae, are commonly used as purgative, emetic, aphrodisiac and in nervous disorder in traditional and folk medicines. In present study petroleum ether and ethanolic extracts of A. precatorius seeds are evaluated for reversal of androgen (testosterone by i.m route) induced alopecia in male albino wistar rats and compared to t
Revista Brasileira de Farmacognosia. Publicado em: 05/12/2011
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2. Evaluation of Caesalpinia pulcherrima endospermic gum as affinity matrices for galactose-binding lectins interaction
Lectins are proteins or glycoproteins able to bind, specifically and reversibly carbohydrates and glycoconjugates. Considering this ability, the utilization of Caesalpinia pulcherrima seeds polysaccharides as an affinity matrix was tested. The endospermic gum were solubilized in distinct concentrations of NaOH and treated with different amounts of epichloroh
Brazilian Archives of Biology and Technology. Publicado em: 2011-04
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3. Composição florística e estrutural da vegetação de restinga do Estado do Piauí
Restinga is vegetation settled upon quartzpamnents of the quaternary and its floristic composition is considered an extension of Atlantic Forest or adjacent ecosystems. The present thesis brings two works released in the restingas of the State of Piauí, whose coast belongs to the septentrional portion of the northeastern coast. This study is divided in two
Publicado em: 2009
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4. Pulchellis: a patent vegetal toxin ribosome inactivating - type 2 RIP. in vitro and in vivo studies / Pulchellina: uma potente toxina vegetal inativadora de ribossomos - RIP tipo 2. estudos in vitro e in vivo
Pulchellin is a type 2 ribosome-inactivating protein (RIP) isolated from seeds of the Abrus pulchellus tenuiflorus plant. The DNA fiagment encoding Pulchellin A-chain (PAC) was cloned and inserted in pGEX-5X to express the recombinant pulchellin Achain (rPAC) as a fusion protein in Escherichin coli. The deduced amino acid sequence analyses of the rPAC presen
Publicado em: 2005
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5. Screening of lectins from South American plants used as affinity ligands to purify rhEPO
Two groups of isoforms of rhEPO, at a concentration of 300 µg/ml, were tested as putative inhibitors of the lectinic hemagglutination reaction in order to obtain affinity ligand(s) for hormone purification: groups I (pI: 3.80; 3.89; 3.95; 4.07, 4.15 and 4.26) and groups II (pI: 4.15, 4.26; 4.38; 4.51; 4.72 and 4.93) Crude extracts from the vegetable materia
Brazilian Journal of Chemical Engineering. Publicado em: 2003-03
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6. Plant Growth Inhibitor from Abrus precatorius Seeds
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7. Diphtheria toxin has the properties of a lectin.
The inhibition of protein synthesis in Chinese hamster V79 cells by diphtheria toxin is antagonized by the lectins concanavalin A, succinylated concanavalin A, and wheat germ agglutinin but not by Proteus vulgaris phytohemagglutinin or abrus agglutinin. The effects of concanavalin A and wheat germ agglutinin are reversed by methyl alpha-mannoside and N-acety
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8. Isolation of a Clone of Chinese Hamster Ovary Cells Deficient in Plant Lectin-Binding Sites
Ricin, a galactose-binding lectin with potent cytotoxic activity, was used to select a clone of Chinese hamster ovary cells with altered plant lectin-binding properties. The clone (15B) is 80-fold less sensitive to the toxic action of ricin than the parent line. In the absence of ricin, it grows both in monolayer and suspension culture with a normal generati
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9. Genotypic Characterization of Bradyrhizobium Strains Nodulating Small Senegalese Legumes by 16S-23S rRNA Intergenic Gene Spacers and Amplified Fragment Length Polymorphism Fingerprint Analyses
We examined the genotypic diversity of 64 Bradyrhizobium strains isolated from nodules from 27 native leguminous plant species in Senegal (West Africa) belonging to the genera Abrus, Alysicarpus, Bryaspis, Chamaecrista, Cassia, Crotalaria, Desmodium, Eriosema, Indigofera, Moghania, Rhynchosia, Sesbania, Tephrosia, and Zornia, which play an ecological role an
American Society for Microbiology.
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10. Extracellular Matrix Assembly in Diatoms (Bacillariophyceae) (I. A Model of Adhesives Based on Chemical Characterization and Localization of Polysaccharides from the Marine Diatom Achnanthes longipes and Other Diatoms).
Extracellular adhesives from the diatoms Achnanthes longipes, Amphora coffeaeformis, Cymbella cistula, and Cymbella mexicana were characterized by monosaccharide and methylation analysis, lectin-fluorescein isothiocyanate localization, and cytochemical staining. Polysaccharide was the major component of adhesives formed during cell motility, synthesis of a b
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11. Differentiation of Bacillus anthracis and other Bacillus species by lectins.
Bacillus anthracis was agglutinated by several lectins, including those from Griffonia simplicifolia, Glycine max, Abrus precatorius, and Ricinus communis. Some strains of Bacillus cereus var. mycoides (B. mycoides) were strongly reactive with the lectin from Helix pomatia and weakly reactive with the G. max lectin. The differential interactions between Baci