GHTM

Global Health and Tropical Medicine

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Home / Archives for 2019

Detection of Rickettsia conorii israelensis DNA in the Blood of a Cat and a Dog From Southern Portugal

  • Authors: Maia C, Cristóvão JM, Pereira A, Parreira R, Campino L
  • Publication Year: 2019
  • Journal: Topics in Companion Animal Medicine
  • Link: https://www.sciencedirect.com/science/article/pii/S1938973619300248

Vector-borne rickettsioses represent emerging threats to public health worldwide. The aim of this work was the screening for the presence of Rickettsia spp. in the blood of dogs and cats from southern Portugal. A PCR product of the expected size was amplified from DNA extracts obtained from blood samples of 29 out of 225 (12.9%) cats and […]
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Origin and expansion of the mosquito Aedes aegypti in Madeira Island (Portugal)

  • Authors: Seixas G, Salgueiro P, Bronzato-Badial A, Gonçalves Y, Reyes-Lugo M, Viveiros B, Gordicho V, Ribolla P, Silva AC, Pinto J, Sousa CA
  • Publication Year: 2019
  • Journal: Scientific Reports
  • Link: https://www.nature.com/articles/s41598-018-38373-x

Historically known as the yellow fever mosquito, Aedes aegypti invaded Madeira Island in 2005 and was the vector of the island’s first dengue outbreak in 2012. We have studied genetic variation at 16 microsatellites and two mitochondrial DNA genes in temporal samples of Madeira Island, in order to assess the origin of the invasion and the population […]
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Anopheline antiplatelet protein from mosquito saliva regulates blood feeding behavior

  • Authors: Islam A, Emran TB, Yamamoto DS, Iyori M, Amelia F, Yusuf Y, Yamaguchi R, Alam MDS, Silveira H, Yoshida S
  • Publication Year: 2019
  • Journal: Scientific Reports
  • Link: https://www.nature.com/articles/s41598-019-39960-2

The saliva of hematophagous arthropods is enriched with a complex mixture of antihemostatic molecules, the biological functions of which are largely unknown. Anopheline antiplatelet protein (AAPP) from malaria vector mosquito exhibits strong antiplatelet activity when bound directly to host collagen by its C-terminus and through its N-terminus with Ca2+-binding activity. To investigate the biological functions […]
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Making a meal of it: Mosquito spit protein controls blood feeding

  • Authors: Islam A, Emran TB, Yamamoto DS, Iyori M, Amelia F, Yusuf Y, Yamaguchi R, Alam MDS, Silveira H, Yoshida S
  • Publication Year: 2019
  • Journal: Scientific Reports
  • Link: https://www.sciencedaily.com/releases/2019/05/190510102932.htm

A Japan-based research team led by Kanazawa University used the most up-to-date simulation techniques to determine how to make Researchers led by Kanazawa University developed a transgenic approach to inactivating the mosquito salivary protein AAPP. Transgenic mosquitos showed significantly longer probing and prediuresis times, and worse feeding success and meal sizes compared with their wild-type […]
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Factors associated with self-reported non-completion of the hepatitis B vaccine series in men who have sex with men in Brazil

  • Authors: Queiroz AAFLN, Sousa AFL, Matos MCB, Araújo TME, Brignol S, Reis RK, Gir E, Moura MEB
  • Publication Year: 2019
  • Journal: BMC Infectious Diseases
  • Link: https://bmcinfectdis.biomedcentral.com/articles/10.1186/s12879-019-3970-y

Background The objective of the present study was to analyze the factors associated with non-completion of the hepatitis B vaccine series among men who have sex with men and use geosocial dating apps in Brazil. Methods This was a cross-sectional, population survey-based, analytical study, conducted exclusively online in all the regions of Brazil, with a […]
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About GHTM

GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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Funding

UID/04413/2025 - DOI: 10.54499/UID/04413/2025

UID/PRR/04413/2025 - DOI: 10.54499/UID/PRR/04413/2025

UID/PRR2/04413/2025 - DOI: 10.54499/UID/PRR2/04413/2025

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