Judith Velasco

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The essential oil of the aerial parts of Tagetes patula L., was analyzed by GC/MS. The oil obtained by hydrodestillation yielded 0.17 %. Thirty components were identified by comparison of their mass spectra with Wiley library data. The major constituents were piperitone (33.77 %), trans-β-ocymene (14.83 %), terpinolene (13.87 %) and β-caryophyllene (9.56(More)
Helicobacter pylori infection is common in people. However, the existence of extra gastric reservoirs and transmission routes remain controversial in the field. Because the oral cavity has been proposed as a reservoir for H. pylori, a study was carried out to determine the presence of H. pylori in dental plaque and saliva. The results were asociated with(More)
OBJECTIVE We sought to determine the utility of constrat-enhanced transcranial color sonography (TCCS) in the diagnosis of cerebral circulatory arrest in cases of difficult acoustic window. MATERIALS AND METHODS From January 2007 to July 2008, we prospectively studied 50 patients who fulfilled clinical criteria of brain death. In all cases, we performed(More)
1 Facultad de Ciencias Naturales, Universidad de Guayaquil, Guayaquil, Ecuador. Facultad de Farmacia y Bioanálisis. Universidad de Los Andes, Mérida, Venezuela. 2 Facultad de Farmacia y Bioanálisis. Universidad de Los Andes, Mérida, Venezuela. 3 Herbario GUAY, Universidad de Guayaquil, Facultad de Ciencias Naturales, Guayaquil, Ecuador. 4 Departamento de(More)
The pathogenesis of male infertility can be reflected in alterations of spermatogenesis caused by testicular cancer, aplasia of the germinal cells, varicocele, environmental factors or defect in the transport of the sperms, among others. In general, 48% of men suffer unexplained infertility. During a long time, the masculine reproductive tract and the(More)
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