Octavio López

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The duration of human immunodeficiency virus (HIV-1) infection prior to the development of AIDS is variable, and for most patients the exact time of infection is not known. A group of 38 HIV-1-infected subjects was tested while asymptomatic for comparative cytotoxic lymphocyte responses to the Gag and envelope antigens of HIV-1. Twenty of the 38 patients(More)
In recent years plastination has begun to revolutionize the way in which human and veterinary gross anatomy can be presented to students. The study reported here assessed the efficacy of plastinated organs as teaching resources in an innovative anatomy teaching/learning system. The main objective was to evaluate whether the use of plastinated organs(More)
By using target cells that expressed isolated env, gag, p27nef, or p23vif molecules introduced by recombinant vaccinia viruses containing genes encoding these polypeptides, it was possible to identify env, gag, p27nef, and p23vif as cytolytic target antigens for freshly isolated blood cells from human immunodeficiency virus 1 (HIV-1) seropositive patients.(More)
Magnetic resonance angiography (MRA) images of the normal canine heart and associated blood vessels were obtained from two mature Beagle dogs. Fast spin-echo sequence MRA images were taken with a 1.5T magnet and a human thorax coil. Relevant vascular structures were identified and labelled on maximum intensity projection reconstructions of 3D(More)
We determined biovars and serotypes of 154 isolates of Cryptococcus neoformans from clinical and environmental sources from different areas of Spain. All clinical isolates belonged to C. neoformans var. neoformans. Serotypes showed an irregular distribution. C. neoformans var. gattii serotype B was isolated from necropsy specimens from goats with pulmonary(More)
This study reports cutaneous leishmaniasis (CL) caused by Leishmania chagasi/Le. infantum in Venezuela, with some atypical characteristics. Out of 63 cases of CL in the suburbs of Altagracia de Orituco, Guarico State, Venezuela, 30 presented clinical, parasitological, immunological and epidemiological features different from those of the classical CL known(More)
OBJECTIVE To determine if asymptomatic stable chronic hyperlactatemia in human immunodeficiency virus (HIV)-infected patients under highly active antiretroviral therapy (HAART, including nucleoside analog reverse transcriptase inhibitors (NRTI)) could be improved by antioxidant supplementation. DESIGN To match two groups of patients taking NRTI for at(More)
Fresh peripheral blood mononuclear cells from human immunodeficiency virus-1 (HIV-1) seropositive donors can lyse target cells expressing the envelope glycoprotein in vitro. In most cases, this antigen-specific lysis is not mediated by T lymphocytes. Lymphoblastoid cell lines infected with recombinant vaccinia viruses expressing different forms of the(More)