Encontrados 9 documentos, a visualizar página 1 de 1

Mestrado em Análises Clínicas ; MSc in Clinical Analysis

Outcrossing rate of Couratari multiflora (J.Smith) Eyma (Lecythidaceae), a low-...

A multilocus mixed-mating model was used to evaluate the mating system of a population of Couratari multiflora, an emergent tree species found in low densities (1 individual/10 ha) in lowland forests of central Amazonia. We surveyed and observed phenologically 41 trees in an area of 400 ha. From these, only four mother trees were analyzed here because few of them set fruits, which also suffered high predation. ...

Cytotoxicity and genotoxicity of chitooligosaccharides upon lymphocytes

Two COS mixtures and a low molecular weight chitosan (LMWC) were tested for potential cytotoxicity and genotoxicity upon human lymphocytes. Genotoxicity was evaluated in vitro by cytokinesis-blocked micronucleus and alkaline comet assays, while cytotoxicity was assessed by flow cytometry analysis. Our results suggest that COS do not exhibit any genotoxicity upon human lymphocytes, independently of MW or concent...

Variações interanuais na fenologia de uma comunidade arbórea de floresta semide...

As comunidades arbóreas de florestas tropicais localizadas em regiões com clima sazonal tendem a ajustar a fenologia da queda de folhas e da produção de flores e frutos à sazonalidade climática. Neste estudo monitoramos a comunidade arbórea de uma floresta semidecidual no período de quatro anos (2001 a 2004), a fim de analisar a relação entre o número de espécies perdendo folhas, florescendo e frutificando e a ...

Antioxidant activity of chitooligosaccharides upon two biological systems: Eryt...

Most of the reports to date on the antioxidant capacity of chitosans and chitooligosaccharides (COS) are based on strictly chemical methods. When studying antioxidants with potential in vivo applications, the method used to evaluate the antioxidant activity should be representative of the conditions in which the antioxidant might have a protective effect. In this work we evaluate the antioxidant activity of two...

Linkage of cytosolic peroxiredoxin 2 to erythrocyte membrane imposed by hydroge...

Human erythrocyte peroxiredoxin 2 (Prx2) is a typical 2-cys cytosolic peroxiredoxin with thiol-dependent hydrogen peroxide scavenger activity. In a previous work, we reported Prx2 erythrocyte membrane linkage in some Hereditary Spherocytosis patients and that it seemed to be related to oxidative stress. The aim of the present work was to determine if Prx2 linkage to erythrocyte membrane could be induced by oxid...

Neutrophil activation and resistance to recombinant human erythropoietin therap...

The aim of this work was to evaluate the neutrophil activation state in chronic kidney disease (CKD) patients under hemodialysis, and its linkage with resistance to recombinant human erythropoietin (rhEPO) therapy. Methods: We studied 63 CKD patients under hemodialysis and rhEPO treatment (32 responders and 31 non-responders to rhEPO therapy). In 20 of the CKD patients (10 responders and 10 non-responders to rh...

Efeitos de área e de borda sobre a estrutura florestal em fragmentos de florest...

As estimativas de densidade e biomassa de árvores vivas com DAP > 10 cm e arvoretas 1-9,9 cm de DAP, liteira lenhosa grossa caída (LCG diâmetro > 10 cm), árvores mortas em pé (> 10 de DAP) e liteira lenhosa fina caída (LCF - 2,5 9,9 cm de diâmetro) foram quantificadas em 56 parcelas permanentes de 1 ha, distribuídas em quatro categorias de tamanho de fragmento - fragmentos de 1 ha (4 parcelas), fragmentos de 10...

Dificuldade de intubação traqueal em paciente com craniossinostose: relato de caso

JUSTIFICATIVA E OBJETIVOS: Existem formas complexas de craniossinostose acompanhadas de malformações da face e das vias aéreas, que podem levar a dificuldade de intubação traqueal (IOT). O objetivo deste relato é apresentar um caso de intubação traqueal difícil, em criança submetida à cirurgia para correção da craniossinostose. RELATO DO CASO: Criança com 57 dias, 3700 gramas, perímetro cefálico 39 cm, ASA II, ...