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1.
Rev. bras. farmacogn ; 22(6): 1259-1267, Nov.-Dec. 2012. ilus, tab
Article in English | LILACS | ID: lil-659042

ABSTRACT

The essential oil (EO) of aerial parts of Lantana camara L., Verbenaceae, from Simões, Piaui, Northeast of Brazil, were obtained by hydrodistillation and analyzed by GC-FID and GC-MS techniques. In total, 68 compounds were identified. The most representative compounds of the oil were mono and sesquiterpenes. The main compounds found in the oil of the leaves in different months were β-caryophyllene (10.5%, in June of 2009), sabinene (7.98%, in September of 2008), limonene (7.68%, in September of 2008), spathulenol (11.64%, in September of 2008). The oil from stems of L. camara was characterized by a largest amount of sesquiterpenoids, with spatulenol (15.9%) and caryophyllene oxide (17.1% in June of 2009), as main components. β-Gurjunene (32.7%, in September of 2008) was the most prominent compound in the stems oils, which was absent or at very low relative abundance in leaves. L. camara essential oils from leaves were cytotoxic to V79 mammalian cells and also to Artemia salina, showing 50% lethal concentration (LC50) values from 0.23 µg/mL. The in vitro data obtained in this study suggested that EO may also be effective treating yeast infection in patients infected with fluconazole and terbinafine resistant isolates, but its toxicity must be monitored carefully.

2.
Arq. neuropsiquiatr ; 48(3): 320-8, set. 1990. ilus, tab
Article in Portuguese | LILACS | ID: lil-85636

ABSTRACT

Potenciais evocados sensoriais (PES) säo analisados pelos autores, apoiados em experiência de mais de 6 anos. E conceituado o método, orientando a obtençäo à beira do letio, em UTI, em pacientes em coma. Analisa-se a execuçäo de PE visual por flash (PEV-F), PE auditivo de tronco cerebral (PEA-TC) e PE sômato-sensitivo de nervo mediano (PESS-M), prodondo-se classificaçäo dos achados principais. E discutido o valor diagnóstico dos PES em pacientes em coma, principalmente na avaliaçäo neurofisiológica do nível de comprometimento do sistema nervoso, cruzando-se informaçöes obtidas por via horizontal (PEV-F) vertical (PESS-M) e do tronco cerebral (PEA-TC). Os PES podem colaborar no diagnóstico de morte encefálica e na detecçäo de alteraçöes específicas a cada via. E ressaltado o valor prognóstico dos PES, em especial do PESS-M normal ou apenas levemente alterado indica bom prognóstico: PESS-M com ausência bilateral de componentes tálamo-corticais denuncia mau prognóstico. O PEV-F mostra comportamento similar ao do PESS-M


Subject(s)
Humans , Coma/physiopathology , Evoked Potentials/physiology , Nervous System/physiopathology , Coma/diagnosis , Evoked Potentials, Auditory/physiology , Evoked Potentials, Somatosensory/physiology , Evoked Potentials, Visual/physiology , Prognosis
3.
Temas (Säo Paulo) ; 17(32/33): 167-80, jun.-dez. 1987.
Article in Portuguese | LILACS | ID: lil-69021

ABSTRACT

Os potenciais evocados sensoriais (PES) podem ser úteis para colaborar no diagnóstico diferencial entre distúrbios orgânicos acometendo vias do sistema nervoso e distúrbios psicogênicos como histeria e simulaçäo. Contudo, a utilidade diagnóstica do teste tem limitaçöes: certos déficitis neurológicos podem cursar com PES normais e está descrito que alguns indivíduos podem alterar voluntariamente as respostas do potencial evocado visual. Portanto, é importante ressaltar que os PES devem ser valorizados apenas junto ao contexto clínico e devem ser executados e interpretados dentro de normas técnicas bem estabelecidas


Subject(s)
Adolescent , Adult , Middle Aged , Humans , Male , Female , Child , Evoked Potentials , Hysteria/diagnosis , Malingering/diagnosis , Diagnosis, Differential
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