| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
Counteracting effects on free radicals and histological alterations induced by a fraction with casearins
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| Autores: |
ARAÚJO,ÉVERTON JOSÉ FERREIRA DE
OLIVEIRA,GUILHERME ANTÔNIO LOPES DE
SOUSA,LÍVIA QUEIROZ DE
BOLZANI,VANDERLAN DA SILVA
CAVALHEIRO,ALBERTO JOSÉ
TOME,ADRIANA DA ROCHA
PERON,ANA PAULA
SANTOS,ANDRÉ GONZAGA DOS
CITÓ,ANTONIA MARIA DAS GRAÇAS LOPES
PESSOA,CLÁUDIA
FREITAS,RIVELILSON MENDES DE
FERREIRA,PAULO MICHEL PINHEIRO
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| Data: |
2015-09-01
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| Ano: |
2015
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| Palavras-chave: |
Clerodane diterpenes
Casearia sylvestris
Antioxidant
Morphological changes
Toxicity
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| Resumo: |
ABSTRACTCasearia sylvestris Swartz is a medicinal plant widely distributed in Brazil. It has anti-inflammatory, antiulcer and antitumor activities and is popularly used to treat snakebites, wounds, diarrhea, flu and chest colds. Its leaves are rich in oxygenated tricyclic cis-clerodane diterpenes, particulary casearins. Herein, we evaluated the antioxidant activities of a fraction with casearins (FC) isolated from C. sylvestrisand histological changes on the central nervous system and livers of Mus musculus mice. Firstly, in vitro studies (0.9, 1.8, 3.6, 5.4 and 7.2 μg/mL) revealed EC50 values of 3.7, 6.4 and 0.16 µg/mL for nitrite, hydroxyl radical and TBARS levels, respectively. Secondly, FC (2.5, 5, 10 and 25 mg/kg/day) was intraperitoneally administered to Swiss mice for 7 consecutive days. Nitrite levels in the hippocampus (26.2, 27.3, 30.2 and 26.6 µM) and striatum (26.3, 25.4, 34.3 and 27.5 µM) increased in all treated animals (P < 0.05). Lower doses dropped reduced glutathione, catalase and TBARS levels in the hippocampus and striatum. With the exception of this reduction in TBARS formation, FC displayed only in vitro antioxidant activity. Animals exhibited histological alterations suggestive of neurotoxicity and hepatotoxicity, indicating the need for precaution regarding the consumption of medicinal formulations based on Casearia sylvestris.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401791
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/0001-3765201520150149
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.87 n.3 2015
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| Direitos: |
info:eu-repo/semantics/openAccess
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