10 documents found, page 1 of 1

Multi-analytical study of ceramic pigments application in the study of Iron Age...

A non-invasive multi-analytical approach combining optical microscopy (OM), micro-X-ray diffraction (mXRD), in-situ X-ray fluorescence spectroscopy (XRF), variable pressure scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (VP-SEM-EDS) and Raman micro-spectroscopy has been employed for the first time to investigate the chemical composition of ceramic pigments in Iberian Iron Age cer...

A Multidisciplinary Approach to the Study of Archaeological Mortars from the To...

The Roman town of Ammaia (in Marvão Region) is considered one of the most important recent findings of the Roman presence in Portuguese territory. It was settled in Republican times and abandoned in the seventh century. In this research, 17 masonry mortars and renders from the West Tower (South Gate), the residential area near the West Tower, the macellum, the peristylium, the public bath building, the podium o...

Evolution of the Human Immunodeficiency Virus Type 2 Envelope in the First Year...

Background: Differently from HIV-1, HIV-2 disease progression usually takes decades without antiretroviral therapy and the majority of HIV-2 infected individuals survive as elite controllers with normal CD4+ T cell counts and low or undetectable plasma viral load. Neutralizing antibodies (Nabs) are thought to play a central role in HIV-2 evolution and pathogenesis. However, the dynamic of the Nab response and r...

Coreceptor Usage by HIV-1 and HIV-2 Primary Isolates: The Relevance of CCR8 Che...

The human immunodeficiency virus replication cycle begins by sequential interactions between viral envelope glycoproteins with CD4 molecule and a member of the seven-transmembrane, G-protein-coupled, receptors' family (coreceptor). In this report we focused on the contribution of CCR8 as alternative coreceptor for HIV-1 and HIV-2 isolates. We found that this coreceptor was efficiently used not only by HIV-2 but...

Aplasias Medulares Congénitas

Las aplasias medulares congénitas constituyen un grupo heterogéneo de enfermedades que se caracterizan por insuficiencia medular, asociadas frecuentemente a una o más anomalías somáticas y con riesgo elevado de neoplasias.Son enfermedades raras, generalmente diagnosticadas en la edad pediátrica, y con una mortalidad prematura importante. Los autores presentan 11 casos de aplasia medular congénita,8 deanemia de ...

Doença de Kikuchi e Fujimoto

A doença de Kikuchi e Fujimoto, também conhecida como Linfadenite Histiocítica Necrosante, é uma entidade clínico-patológica rara cuja etiologia permanece desconhecida; tem sido sugerida a possibilidade de uma etiologia auto-imune, mas também tem sido descrita a associação com algumas infecções víricas. Os autores apresentam o caso clínico de uma adolescente de 14 anos internada por febre persistente, volumosa ...

Infecção pelo VIH na Grávida e Criança

Evaluation of the clinical sensitivities of three viral load assays with plasma...

The viral load assays AMPLICOR HIV-1 Monitor Test 1.5, Nuclisens HIV-1 QT, and Quantiplex HIV RNA 3.0 (bDNA) were evaluated for their abilities to quantify human immunodeficiency virus type 1 (HIV-1) RNA in 64 plasma samples from 21 children infected in P

Cardiovascular morbidity in children with human immunodeficiency virus infection.

Abnormalities of cardiovascular structure and function have been described among children with human immunodeficiency virus (HIV). In order to evaluate their occurrence and clinical predictors, 32 children infected with HIV, aged three months to 13 years (mean age = 3.11 +/- 3.51 years) were studied. Perinatal transmission was identified in 90% of the children. Twenty-two patients (pts) (69%) had symptoms, nine...

Morbilidade Cardiovascular em Crianças com Infecção pelo Vírus da Imunodeficiên...

Na infecção pelo vírus da imunodeficiência humana (VIH) estão descritas alterações cardiovasculares, tanto estruturais como funcionais. Com o objectivo de fazer o rastreio das referidas alterações no propósito de uma intervenção terapêutica precoce, foi efectuada uma avaliação clínica e laboratorial prospectiva em 32 crianças com infecção pelo VIH, com idades compreendidas entre três meses e 13 anos (média = 3....