Leite R.C.,Institute Medicina Integral Prof Fernando Figueira Imip |
Souza A.I.,Institute Medicina Integral Prof Fernando Figueira Imip |
Martelli C.T.,Setor Universitario |
Ferreira A.L.G.,Institute Medicina Integral Prof Fernando Figueira Imip |
And 2 more authors.
Journal of Clinical Virology | Year: 2014
Background: Dengue affects nearly 400 million people annually worldwide and considered one of the most serious health threats in tropical and subtropical countries. Objective: To analyze the occurrence of dengue infection among the parturient who have formed the baseline of an ongoing birth cohort study in the city of Recife, Northeast of Brazil. Study design: From March 2011 to May 2012, we recruited 417 parturients with low-risk pregnancies at maternity ward who agreed to a follow-up of their babies. Dengue infection was accessed through DENV RT-PCR and anti-dengue antibodies (IgM and IgG). The prevalence of IgG antibodies in the parturients and their concepts were determined. The concordance among the pairs was tested using Kappa. The association of recent infection (IgM and/or DENV RT-PCR positive) with the maternal characteristics and clinical features of the neonates was analyzed through logistic regression. Results: The prevalence of IgG antibodies in the maternal and cord blood samples was 95.1% (95% CI: 92.6-96.9%) and 95.8% (95% CI: 93.4-97.5%), respectively, with high agreement between maternal-cord pairs (Kappa = 0.93). The prevalence of recent infection was 10.6% (95% CI: 7.9-14.2%) in the parturients. Reported fever during pregnancy was associated to recent infection (p= 0.023). Conclusion: The data draw attention for the high frequency of anti-dengue antibodies in the women studied and for the high occurrence of infection during pregnancy in this region of Brazil. There is a need for further studies to better characterize dengue infection in pregnant women. © 2014 Elsevier B.V.
Mello-Silva C.C.,Instituto Oswaldo Cruz IOC Fiocruz Av |
de Vasconcellos M.C.,Biologia e controle de endoparasitos de importancia medica e veterinaria IOC Fiocruz Av |
Bezerra J.C.B.,Setor Universitario |
Rodrigues M.D.L.A.,Federal Rural University of Rio de Janeiro |
Pinheiro J.,Federal Rural University of Rio de Janeiro
Acta Tropica | Year: 2011
The aim of this work was to analyze the content of total protein and nitrogen degradation products in Biomphalaria glabrata infected with Schistosoma mansoni and exposed to Euphorbia splendens var. hislopii latex. The LC50 of this latex was 1.0mg/l. Concentrations of uric acid, urea and total proteins were determined in the hemolymph of B. glabrata infected with five S. mansoni miracidia and exposed to a sublethal concentration of E. splendens var. hislopii latex for 24h. The exposure to this molluscicide caused total depletion of the alterative sources of energy (total proteins) and significant variation in the nitrogen degradation products. The urea content increased while the uric acid level decreased. These results reflect a disturbance in the snails regulation of their metabolism due to intoxication caused by the latex exposure. © 2010 Elsevier B.V.
Daher A.,Federal University of Goais |
Versloot J.,University of Toronto |
Leles C.R.,Federal University of Goais |
Costa L.R.,Federal University of Goais |
Costa L.R.,Setor Universitario
Health and Quality of Life Outcomes | Year: 2014
Background: The Dental Discomfort Questionnaire (DDQ) is an observational instrument intended to measure dental discomfort and/or pain in children under 5 years of age. This study aimed to validate a previously cross-culturally adapted version of DDQ in a Brazilian children sample.Methods: Participants included 263 children (58.6% boys, mean age 43.5 months) that underwent a dental examination to assess dental caries, and their parent that filled out the cross-culturally adapted DDQ on their behalf. Exploratory factor analysis (principal component analysis form) and psychometric tests were done to assess instrument's dimensionality and reliability.Results: Exploratory factor analysis revealed a multidimensional instrument with 3 domains: 'eating and sleeping problems' (Cronbach's alpha 0.81), 'earache problems' (alpha 0.75), and 'problems with brushing teeth' (alpha 0.78). The assessment had excellent stability (weighted-kappa varying from 0.68 to 0.97). Based on the factor analysis, the model with all 7 items included only in the first domain (named DDQ-B) was further explored. The items and total median score of the DDQ-B were related to parent-reported toothache and the number of decayed teeth, demonstrating good construct and discriminant validities.Conclusions: DDQ-B was proven a reliable pain assessment tool to screen this group of Brazilian children for caries-related toothache, with good psychometric properties. © 2014 Daher et al.; licensee BioMed Central Ltd.
Figueiredo Alves R.R.,Federal University of Goais |
Figueiredo Alves R.R.,Setor Universitario |
Turchi M.D.,Federal University of Goais |
Santos L.E.,Federal University of Goais |
And 7 more authors.
BMC Public Health | Year: 2013
Background: The epidemiology of infection with multiple human papillomavirus (HPV) types in female adolescents is poorly understood. The purpose of this study was to explore the epidemiology of infection with multiple HPV types in adolescents and its association with demographic, behavioral and biological variables, as well as with cytological abnormalities. Methods. This community-based study included 432 sexually active females between 15 and 19 years of age. Genotyping for 30 HPV types was performed using a reverse blot strip assay/restriction fragment length polymorphism. Unconditional multivariate logistic regression was performed to identify factors significantly associated with HPV infection. The association between HPV infection and cytological abnormalities was calculated using a prevalence ratio. Results: The most common HPV types detected were 16, 51, 31, 52 and 18. Of the 121 HPV-positive women, 54 (44.6%) were infected with multiple HPV types. Having more than one lifetime sexual partner was associated with infection with any HPV infection, single HPV infection, and infection with multiple HPV types. The presence of cytological abnormalities was associated with infection with multiple HPV types. Conclusions: Co-infecting HPV genotypes occur in a high proportion of sexually active adolescents. Socio-demographic or sexual behavior factors associated with single HPV infection were similar to those associated with multiple HPV types. The higher risk of cytological abnormalities conferred by infection with multiple HPV types suggests a potential role of co-infection in the natural history of HPV infection. © 2013 Figueiredo Alves et al.; licensee BioMed Central Ltd.
Daher A.,Federal University of Goais |
Daher A.,Setor Universitario |
Versloot J.,University of Toronto |
Costa L.R.,Federal University of Goais
BMC Research Notes | Year: 2015
Background: A rigorous cross-cultural adaptation process of an existing instrument could be the best option for measuring health in different cultures, instead of developing a new tool, and prior to psychometric and validation testing. The Dental Discomfort Questionnaire (DDQ), a validated instrument for assessing toothache in young children, has not been cross-culturally adapted so far. This study aimed to explore the detailed phases of the cross-cultural adaptation process of a pain assessment tool, presenting the example of the DDQ Brazilian-Portuguese adapted version. Methods: The study design was based on the universalist approach, which consists of a sequential analysis to assess the relevant phases of a cross-cultural process before testing the measures of the instrument: conceptual, item, semantic, and operational equivalences. Systematic information was gathered from the literature, expert discussions, translations, and pre-testing through cognitive interviews with Brazilian population. Results: Detailed description of the three major phases for a cross-cultural adaptation process was given. Notes of the changes done in the structure of the presented instrument (DDQ) were specifically pointed out at each phase. Conceptual and item analyses showed that there are similarities in the DDQ construct between the original and Brazilian cultures that require minor modifications. Translations and back-translations allowed the development of the preliminary Brazilian-Portuguese version of the DDQ, which was tested and underwent other minor changes to improve its comprehensibility. Conclusions: Describing the phases was important to show how changes are made in a cross-cultural adaptation process of an instrument. This also could help researchers in adapting similar pediatric pain assessment tools to different cultures. A Brazilian-Portuguese version of the DDQ was presented. © 2014 Daher et al.; licensee BioMed Central Ltd.