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Croton argenteus preparation inhibits initial growth, mitochondrial respiration and increase the oxidative stress from Senna occidentalis seedlings Anais da ABC (AABC)
RECH,KATLIN S.; SILVA,CRISTIANE B.; KULIK,JULIANA D.; DIAS,JOSIANE F.G.; ZANIN,SANDRA M.W.; KERBER,VITOR A.; OCAMPOS,FERNANDA M.M.; DALARMI,LUCIANE; SANTOS,GEDIR O.; SIMIONATTO,EUCLÉSIO; LIMA,CRISTINA P.; MIGUEL,OBDÚLIO G.; MIGUEL,MARILIS D..
Senna ocidentalis is a weed, native to Brazil, considered to infest crops and plantations, and is responsible for yield losses of several crops, particularly soybean. The aim of this work was to evaluate if theCroton argenteus extract and fractions possess phytotoxic activity on S. ocidentalis. The crude ethanolic extract (CEE) and its hexanic (HF), chloroformic (CLF) and ethyl acetate (EAF) fractions were tested in germination, growth, oxidative stress increase, Adenosine triphosphate, L-malate and succinate synthesis. The crude extract and its fractions slowed down the germination of S. ocidentalis and decreased the final percentage of germination. Oxidative stress was also increased in the seedlings, by an increase of catalase, peroxidase, superoxide...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alelochemicals; Fedegoso; Velame branco; ATP synthesis; Antioxidant defense.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200753
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Investigation of local anesthetic and antimycobacterial activity of Ottonia martiana Miq. (Piperaceae) Anais da ABC (AABC)
CUNICO,MIRIAM M.; TREBIEN,HERBERT A.; GALETTI,FÁBIO C.; MIGUEL,OBDULIO G.; MIGUEL,MARILIS D.; AUER,CELSO G.; SILVA,CÉLIO L.; SOUZA,ANA OLÍVIA DE.
ABSTRACT Ottonia martiana is a plant popularly known in Brazil by the use for toothache. Ethanolic extract (EE), hexane fraction (HF), dichloromethane fraction (DF) and piperovatine obtained from O. martiana were assayed in vitro and in vivo. The acute toxicity of EE was determined, and LD50 values of 164.5 and 65.0 mg/kg by the oral and intraperitoneal routes, respectively, indicated a high toxicity for EE in vivo, explaining its popular use by topical administration only. A local anesthetic-like effect of EE and its fractions was observed in experimental models using pain induction, and such effect involved an analgesic action. The antimycobacterial activity of EE, HF, DF and piperovatine was evaluated against Mycobacterium tuberculosis H37Rv ATCC 27924....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Analgesic; Anesthetic; Antimycobacterial; Ottonia martiana; Piperaceae; Piperovatine.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000501991
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