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1.
Bioorg Med Chem Lett ; 23(9): 2738-42, 2013 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-23511021

RESUMO

Bioassay-guided fractionation of the CHCl3 layer of Solanum violaceum areal parts methanolic extract led to the isolation of four new steroidal sapogenins, indiosides L-O (1-4), along with eight known steroids, one lignin, and a coumarin. Indioside L is a rare spirostanoid possessing a 1,4-dien-3-one moiety in ring A. Moreover, compounds 3 and 4 represent rare examples of spirostene with the 3ß,7α-diol-5,6-ene moiety compared to the normal 3ß,7ß-diol-5,6-ene derivatives. The cytotoxic activity of the isolates (5-14) was evaluated against human hepatoma (HepG2 and Hep3B), human lung carcinoma (A549), and human breast carcinoma (MDA-MB-231 and MCF-7).


Assuntos
Antineoplásicos/química , Solanum/química , Espirostanos/química , Antineoplásicos/isolamento & purificação , Antineoplásicos/toxicidade , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Células Hep G2 , Humanos , Células MCF-7 , Espectroscopia de Ressonância Magnética , Conformação Molecular , Folhas de Planta/química , Caules de Planta/química , Espirostanos/isolamento & purificação , Espirostanos/toxicidade
2.
Asia Pac Psychiatry ; 7(3): 298-305, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25296384

RESUMO

INTRODUCTION: To examine the prevalence rates and correlates of dependence on, misuse of, and beliefs regarding use of hypnotics in elderly psychiatric patients with long-term use of zolpidem, estazolam, or flunitrazepam. METHODS: A total of 139 psychiatric outpatients 65 or more years of age who used zolpidem, estazolam, or flunitrazepam for at least 3 months were studied. The levels of hypnotic dependence and beliefs regarding hypnotic use (necessity and concern) were assessed. Three patterns of hypnotic misuse in the past 1 month were also explored. The correlates of high dependence, misuse, and unfavorable attitude and high concern toward hypnotic use were examined using logistic regression analyses. RESULTS: A total of 28.8%, 7.9%, 12.2%, and 22.3% of participants reported high dependence on, misuse of, unfavorable attitude toward, and high concern toward hypnotic use, respectively. Males were more likely to report unfavorable attitude toward hypnotic use than females. Elders with significant depression were more likely to report high concern toward hypnotic use than those without significant depression. Elders with high concern toward hypnotic use were more likely to report high dependence on hypnotics than those with low concern. Elders with significant depression and taking zolpidem were more likely to misuse hypnotics than those without significant depression and taking estazolam or flunitrazepam, respectively. DISCUSSION: Clinicians should monitor the possibility of dependence on and misuse of hypnotics among elderly psychiatric patients who had the correlates identified in this study.


Assuntos
Hipnóticos e Sedativos/uso terapêutico , Distúrbios do Início e da Manutenção do Sono/tratamento farmacológico , Transtornos Relacionados ao Uso de Substâncias/psicologia , Idoso , Atitude Frente a Saúde , Estazolam/uso terapêutico , Feminino , Flunitrazepam/uso terapêutico , Humanos , Masculino , Escalas de Graduação Psiquiátrica , Piridinas/uso terapêutico , Fatores Sexuais , Distúrbios do Início e da Manutenção do Sono/psicologia , Zolpidem
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