5 documents found, page 1 of 1
Avaliação da atividade antibacteriana dos extratos metanólico e hexânico do cau...
Sousa, Amanda T. L. de; Andreza, Raul de S.; Alves, Erivania F.; Cruz, Ana J. F.; Leandro, Livia M. G.; Guedes, Tássia T. de A. M.; Macêdo, Rakel O. deIntroduction : Melissa officinalis , of the Lamiaceae family, is a herb commonly used on folk medi - cine. In Brazil it is known as Melissa, erva cidreira, cidrilha and meliteia. Considering that the M. Officinalis L is widely used in folk medicine, as for antibacterial use, among others, the main objective of this work was to evaluate the antibacterial and modulating activity of methanolic and hexanic extracts...
Menadione (vitamin K) enhances the antibiotic activity of drugs by cell membran...
Andrade, Jacqueline C.; Braga, Maria Flaviana B. Morais; Guedes, Gláucia Morgana M.; Tintino, Saulo R.; Freitas, Maria A.; Quintans Júnior, Lucindo J.Abstract Menadione, vitamin K3, belongs to the class of lipid-soluble vitamins and lipophilic substances as menadione cause disturbances in the bacterial membrane, resulting in damage to the fundamental elements for the integrity of the membrane, thus allowing increased permeability. Accordingly, the aim of this study was to evaluate in vitro the antibiotic-modifying activity of menadione in multiresistant stra...
Cytoprotective effect of lygodium venustum Sw. (Lygodiaceae) against mercurium ...
Figueredo, Fernando G.; Lima, Luciene F.; Morais-Braga, Maria Flaviana B.; Tintino, Saulo R.; Farias, Pablo A. M.; Matias, Edinardo F. F.Mercury is a very dangerous metal when humans come into contact with it, whether through the air or skin or by ingestion. The aim of this work was to investigate the possible effects of the ethanol extract and fractions of Lygodium venustum Sw. against mercurium chloride toxicity towards Escherichia coli strain ATCC25922. The polyphenols and flavonoids present in the extract and fractions were quantified in mg ...
Analysis of bioactivities and chemical composition of Ziziphus joazeiro Mart. u...
Brito, Sharlene M. O.; Coutinho, Henrique D. M.; Silva, André Talvani Pedrosa da; Coronel, Cathia; Barbosa, Andreza G. R.; Vega, CelesteThe aim of this study was to evaluate the chemical profile and antioxidant, antimicrobial and antiparasitic activities of the hydroalcoholic extract of the leaves of Ziziphus joazeiro Mart. (HELZJ). The antioxidant DPPH and FRAP assays and chemical profile were determined by colorimetric methods and HPLC/ DAD. The antiparasitic, antibiotic and antibiotic-modifying activity were evaluated by microdilution assays...
Modulation of the antibiotic activity by extracts from Amburana cearensis A. C....
Figueredo, Fernando G.; Ferreira, Emerson O.; Lucena, Bruno F. F.; Torres, Cícero M. G.; Lucetti, Daniel L.; Lucetti, Elaine C. P.e research for new antibacterial substances becomes necessary due to increase of the antibiotic resistance of clinically important pathogens [1]. Due to this fact, substances derived from plants could be attractive alternatives [2, 3]. Natural products from plant may change or modulate the action of the antibiotic, enhancing or reducing the activity of this drug [4]. In recent years, many plants have been eval...