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Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Anti-biofilm activity against Staphylococcus aureus MRSA and MSSA of neolignans and extract of Piper regnellii
ABSTRACT Many infections worldwide are associated with bacterial biofilms. The effects of isolated neolignans (conocarpan and eupomathenoid-5) and the dichloromethane extract of Piper regnellii (Miq.) C. DC., Piperaceae, were tested against isolates of methicillin-resistant Staphylococcus aureus and methicillin-sensitive S. aureus biofilms and S. aureus plan
Rev. bras. farmacogn.. Publicado em: 2017-02
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2. Biological activity of amides and analogs from Piper species and synthetic analogs / Atividade biológica de amidas e análogos de espécies de Piper e estudos biossintéticos
Six amides were isolated from Piper scutifolium and P. corcovadensis including piperovatine, piperlonguminine, isopiperlonguminine and corcovadine, the new scutifoliamide A and scutifoliamide B and also two aristolactams (piperolactam C and stigmalactam). From P. tuberculatum the amides piplartine and pellitorine and two esters, ethyl (E)-3,4,5-trimethoxycin
Publicado em: 2009
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3. ATIVIDADE ANTIMICROBIANA DO CONOCARPANO SEUS DERIVADOS E ANÁLOGOS FRENTE A CEPAS RESISTENTES DE Staphylococcus aureus / ANTIMICROBIAL ACTIVITY OF CONOCARPAN, ITS DERIVATIVES AND ANALOGUES, AGAINST RESISTANT STRAINS OF Staphylococcus aureus
A resistência bacteriana tem sido alvo constante de preocupação, devido ao crescente número de microrganismo com resistência aos agentes antimicrobianos. Estudos realizados com as substâncias extraídas do gênero Piper demonstraram atividade biológica significativa frente a microrganismo Gram-positivo. Entre as substâncias avaliadas, o conocarpano a
Publicado em: 2007
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4. ANALYSIS OF ANTIMICROBIAL POTENTIAL OF EXTRACT, FRACTIONS AND PURE COMPOUNDS OBTAINED FROM Piper solmsianum C. DC. VAR. solmsianum (PIPERACEAE). / ANÁLISE DO POTENCIAL ANTIMICROBIANO DE EXTRATO, FRAÇÕES E SUBSTÂNCIAS PURAS OBTIDAS DE Piper solmsianum C.D.C. VAR. solmsianum (PIPERACEAE)
The species Piper solmsianum belong to the family Piperaceae, which is comprised of about 700 species, and is widely distributed in the tropical and subtropical zones of world. The chemical of P. solmsianum has not been fully investigated, and there are few studies relating to its bilogical activities. This work evaluated the antimicrobial properties of the
Publicado em: 2006
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5. Antibacterial activity of extracts and neolignans from Piper regnellii (Miq.) C. DC. var. pallescens (C. DC.) Yunck
The evaluation of the activity of the aqueous and ethyl acetate extracts of the leaves of Piper regnellii was tested against gram-positive and gram-negative bacteria. The aqueous extractdisplayed a weak activity against Staphylococcus aureus and Bacillus subtilis with minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) of 1000
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-12