IHMT

Instituto de Higiene e Medicina Tropical

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2011

Duffy negative antigen is no longer a barrier to Plasmodium vivax–molecular evidences from the African West Coast (Angola and Equatorial Guinea).

BACKGROUND:
Plasmodium vivax shows a small prevalence in West and Central Africa due to the high prevalence of Duffy negative people. However, Duffy negative individuals infected with P. vivax have been reported in areas of high prevalence of Duffy positive people who may serve as supply of P. vivax strains able to invade Duffy negative erythrocytes. We investigated the presence of P. vivax in two West African countries, using blood samples and mosquitoes collected during two on-going studies.
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Ethidium bromide efflux by Salmonella: modulation by metabolic energy, pH, ions and phenothiazines

The main efflux pump of Salmonella enterica serotype Enteritidis, which obtains its energy for the extrusion of noxious agents from the proton-motive force, was studied with the aid of an ethidium bromide (EtBr) semi-automated method under conditions that define the role of metabolic energy, ions and pH in the extrusion of the universal substrate EtBr.
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The training and professional expectations of medical students in Angola, Guinea-Bissau and Mozambique.

BACKGROUND:
The purpose of this paper is to describe and analyze the professional expectations of medical students during the 2007-2008 academic year at the public medical schools of Angola, Guinea-Bissau and Mozambique, and to identify their social and geographical origins, their professional expectations and difficulties relating to their education and professional future.
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The human resource for health situation in Zambia: deficit and maldistribution.

INTRODUCTION:
Current health policy directions in Zambia are formulated in the National Health Strategic Plan. The Plan focuses on national health priorities, which include the human resources (HR) crisis.
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Science in court: the myth of HIV fingerprinting.

An Editorial in Nature has emphasised the importance of proper scientific validation of forensic methods before their use in court. Classic fingerprinting, DNA fingerprinting, and brain imaging were discussed, and several cases of doubtful interpretation of forensic evidence with potentially incorrect conviction or exoneration of suspects were indicated.
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Molecular Epidemiological Analysis of Paired pol/env Sequences from Portuguese HIV Type 1 Patients

The advent of new therapeutic approaches targeting env and the search for efficient anti-HIV-1 vaccines make it necessary to identify the number of recombinant forms using genomic regions that were previously not frequently sequenced.
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Randomly amplified polymorphic DNA (RAPD) polymerase chain reaction assay for comparison of Schistosoma mansoni strains sensitive and resistant to praziquantel.

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Intestinal parasites in dogs and cats from the district of Évora, Portugal.

Intestinal parasites, both helminths and protozoa, are commonly found in domestic animals, and the possible transmission of enteric parasites from dogs and cats to humans may constitute a global potential health risk worldwide.
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