319 results on '"Sandra, Rocha"'
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2. Artefatos Digitais e (Des)Conexões entre Rotinas: A Experiência de uma Organização em sua Transição Tecnológica
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Erick Figueira and Sandra Rocha-Pinto
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Rotinas Organizacionais ,Conexões ,Artefatos Digitais ,Transformação Digital ,Social Sciences ,Commerce ,HF1-6182 ,Business ,HF5001-6182 - Abstract
Objetivo: Dado que as organizações estão cada vez mais suscetíveis à introdução ou alteração de tecnologias em suas operações, impactando atores e rotinas de diversas naturezas de trabalho, este estudo procurou identificar como uma organização tratou as conexões entre suas rotinas interdependentes ao idealizar uma nova configuração tecnológica. Método: A estratégia de investigação empregada foi o estudo de caso único, com triangulação de dados e análise temática. Principais resultados: Três temas emergiram como resultados desta investigação: i) o papel dos artefatos digitais entre rotinas interdependentes; ii) a ausência de visão holística sobre rotinas interdependentes; e iii) a ausência de identificação profissional com a nova configuração. Enquanto os artefatos digitais foram posicionados como mecanismos de conexão entre as rotinas, os dois últimos temas surgiram como fatores organizacionais de desconexão entre elas. Contribuições acadêmicas: este estudo avança na teoria da interdependência entre rotinas organizacionais, ao apresentar implicações para a caracterização de suas fronteiras. Além disso, embora a literatura aponte a relação entre artefatos e atores a partir de orientações deterministas ou voluntaristas, demonstra-se que os artefatos digitais podem assumir diversas orientações, ao serem concebidos para influenciar ações entre rotinas, levando em consideração aspectos sociomateriais. Contribuições práticas: em intervenções tecnológicas, é importante que gestores e suas equipes interventoras compreendam tanto o estado atual das rotinas impactadas, quanto a percepção dos atores sobre a nova configuração, a fim de identificar possíveis cenários inadequados de execução das rotinas e intercorrências indesejadas.
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- 2024
3. Congenital CMV infection in a Brazilian neonatal intensive care unit: high prevalence among twin newborns
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Lauro Juliano Marin, Pérola Rodrigues dos Santos, Felipe Charu Ramos, Uener Ribeiro dos Santos, Marcílio Marques, Luciana Debortoli de Carvalho, Sandra Rocha Gadelha, and Victor Hugo Aquino
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Cytomegalovirus ,Congenital infection ,Newborn ,Neonatal intensive care unit ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Cytomegalovirus (CMV) is one of the most important pathogens associated with congenital infection worldwide. Most congenital CMV-infected infants are asymptomatic at birth; however, some can develop delayed sequelae, especially hearing loss. Methods This study aimed to investigate the prevalence of congenital CMV infection in a neonatal intensive care unit in a low-income region of Brazil. The objectives extended to identifying associated factors, assessing the clinical status of infected newborns, and undertaking a two-year follow-up to discern potential long-term consequences in the affected infants. This cross-sectional prospective study enrolled newborns up to three weeks of life requiring intensive medical care. We employed a convenience sampling method to include 498 newborns and 477 mothers in the study. Categorical variables underwent analysis employing Fisher’s exact test, whereas the examination of continuous variables involved the Mann‒Whitney test. Results CMV DNA was detected in saliva/urine samples from 6 newborns (1.21%), confirming congenital infection. We noted a significantly greater incidence (OR: 11.48; 95% CI: 2.519–52.33; p = 0.0094) of congenital infection among twins (7.14%) than among nontwins (0.66%). The twin patients exhibited discordant infection statuses, suggesting that only one of the babies tested positive for CMV. Most of the infected children were born to mothers who initiated sexual activity at a younger age (p = 0.0269). Only three out of the six newborns diagnosed with CMV infection underwent comprehensive clinical assessments and received continuous follow-up until they reached two years of age. Only one of the children had weight and height measurements below the norm for their age, coupled with developmental delays. Conclusions The prevalence of congenital CMV infection among newborns admitted to the NICU was low and similar to that in the general population. However, we found a significantly greater incidence of congenital CMV infection in twins than in singletons. Interestingly, the twin-infected patients exhibited discordant infection statuses, suggesting that CMV was present in only one of the babies. We also found that most of the infected children were born to mothers who initiated sexual activity at a younger age. Diagnostic accessibility and comprehensive surveillance programs are imperative for effectively managing and preventing congenital CMV infections.
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- 2024
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4. Experiências em Musicoterapia sob a Perspectiva da Música Ubíqua
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Tereza Raquel Alcântara-Silva, Sandra Rocha do Nascimento, Mayara Kelly Alves Ribeiro, and Damián Keller
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bem-estar ,ubimus ,terapia ,tecnologias cotidianas ,espaços cotidianos ,Music and books on Music ,Music ,M1-5000 - Abstract
Relatamos as estratégias e os procedimentos adotados no desenvolvimento do Programa de musicoterapia para profissionais da saúde (PROMUS). A proposta insere-se no contexto das iniciativas ubimus que visam o incentivo ao bem-estar através da disponibilização e o estudo do impacto do suporte tecnológico em contextos cotidianos. Em particular, atentamos para a utilização de ambientes que previamente não eram considerados como espaços com potencialidade de aplicação musicoterapêutica. Outro aspecto inovador da presente proposta é o reaproveitamento de tecnologia já disponível nas atividades do dia a dia do público-alvo. Essa utilização de tecnologia leve, de baixo custo operativo e compatível com um perfil diverso de potenciais participantes está fortemente alinhada às práticas estabelecidas dentro da comunidade ubimus. Discutimos as implicações desta proposta para a ampliação do vínculo entre ubimus e os usos terapêuticos dos recursos musicais.
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- 2023
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5. Relationship between clinical-epidemiological parameters and outcomes of patients with COVID-19 admitted to the intensive care unit: a report from a Brazilian hospital
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Maisah Meyhr D’Carmo Sodré, Uener Ribeiro dos Santos, Heitor Portella Povoas, Júlio Lenin Guzmán, Caroline Junqueira, Tayana Oliveira Trindade, Sandra Rocha Gadelha, Carla Cristina Romano, Aline Oliveira da Conceição, Eduardo Gross, Aline Silva, Rachel Passos Rezende, Renato Fontana, Camila Pacheco Silveira Martins da Mata, Lauro Juliano Marin, and Luciana Debortoli de Carvalho
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COVID-19 ,SARS-CoV-2 ,biomarkers ,epidemiology ,SAPS3 ,in-hospital mortality ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundPeople in low-income countries, especially those with low socio-economic conditions, are likelier to test positive for SARS-CoV-2. The unequal conditions of public health systems also increase the infection rate and make early identification and treatment of at-risk patients difficult. Here, we aimed to characterize the epidemiological profile of COVID-19 patients in intensive care and identify laboratory and clinical markers associated with death.Materials and methodsWe conducted an observational, descriptive, and cross-sectional study in a reference hospital for COVID-19 treatment in the Southern Region of Bahia State, in Brazil, to evaluate the epidemiological, clinical, and laboratory characteristics of COVID-19 patients admitted to the intensive care unit (ICU). Additionally, we used the area under the curve (AUC) to classify survivors and non-survivors and a multivariate logistic regression analysis to assess factors associated with death. Data was collected from the hospital databases between April 2020 and July 2021.ResultsThe use of bladder catheters (OR 79.30; p
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- 2023
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6. Ex-vivo mucolytic and anti-inflammatory activity of BromAc in tracheal aspirates from COVID-19
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Coelho dos Reis, Jordana Grazziela A., Ferreira, Geovane Marques, Lourenço, Alice Aparecida, Ribeiro, Ágata Lopes, da Mata, Camila Pacheco da Silveira Martins, de Melo Oliveira, Patrícia, Marques, Daisymara Priscila de Almeida, Ferreira, Linziane Lopes, Clarindo, Felipe Alves, da Silva, Murillo Ferreira, Filho, Heitor Portella Póvoas, Oliveira, Nilson Roberto Ribeiro, Jr, Sodré, Maisah Meyhr D’Carmo, Gadelha, Sandra Rocha, Albuquerque, George Rego, Maciel, Bianca Mendes, Mariano, Ana Paula Melo, Silva, Mylene de Melo, Fontana, Renato, Marin, Lauro Juliano, Carlos, Renata Santiago Alberto, Lopes, Amanda Teixeira Sampaio, Ferreira, Fabrício Barbosa, dos Santos, Uener Ribeiro, Santana, Íris Terezinha Santos de, Fehlberg, Hllytchaikra Ferraz, Rezende, Rachel Passos, Dias, João Carlos T., Gross, Eduardo, Goulart, Gisele Assis Castro, Santiago, Marie Gabriele, de Lemos, Ana Paula Motta Lavigne, da Conceição, Aline O., Romano, Carla Cristina, de Carvalho, Luciana Debortoli, Filho, Olindo Assis Martins, Quadros, Claudio Almeida, Morris, David L., and Valle, Sarah J.
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- 2022
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7. Fatores que dificultam o acompanhamento dos pais no processo de ensino e aprendizagem dos alunos do Ensino médio da Escola Estadual Instituto Bereano de Coari no município de Coari-AM, Brasil 2019/2021
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Silva, Maria Sandra Rocha da, primary
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- 2022
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8. Safety of treatment with chloroquine and hydroxychloroquine: A ten-year systematic review and meta-analysis
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Edington, Fernando Luiz Barros, Gadellha, Sandra Rocha, and Santiago, Mittermayer Barreto
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- 2021
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9. Clinical, epidemiological aspects, and trends of Hepatitis B in Brazil from 2007 to 2018
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Cathianne Sacramento Pinto, Galileu Barbosa Costa, Ivan Bezerra Allaman, and Sandra Rocha Gadelha
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Medicine ,Science - Abstract
Abstract Hepatitis B virus (HBV) infection is a concern for public health due to its high prevalence, high infectivity, morbidity, and mortality worldwide. Brazil presents a low HBV prevalence, but has considerable heterogeneity among its geographic regions. Here, we describe the epidemiological profile of HBV infection in different regions of Brazil during 2007–2018, as well as the historical trends associated with the infection. We conducted an observational, ecological time-series study using secondary data collected from the National Notifiable Diseases Information System (SINAN). Our findings suggest that HBV infection was more likely to occur in young, sexually active adults. Individuals from Northeast and Midwest regions were more likely to present acute HBV infection, while individuals from South region were more likely to present chronic HBV infection, reinforcing that specific strategies are required for each particular region. Additionally, we observed a general decreasing trend of infection starting in 2014, however there was an increasing trend of infection in men and in individuals over 40 years old. Although we observed a decreasing trend in HBV infection, active surveillance is needed to prevent HBV spread and possible epidemics, as well as encouraging the vaccination of adults, especially young adult males. Our findings can inform the conduct of large-scale observational studies to evaluate clinical, economical, and social impacts of HBV infections, leading to improved social policies. Finally, our results highlight the need to improve data quality and completeness of epidemiological data, minimizing eventual errors that can make prevention and control strategies difficult.
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- 2021
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10. SARS-CoV-2 Infection in Cities from the Southern Region of Bahia State, Brazil: Analysis of Variables Associated in Both Individual and Community Level
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Murillo Ferreira da Silva, Uener Ribeiro dos Santos, Fabrício Barbosa Ferreira, George Rego Albuquerque, Ana Paula Melo Mariano, Hllytchaikra Ferraz Fehlberg, Íris Terezinha Santos de Santana, Pérola Rodrigues dos Santos, Luciano Cardoso Santos, Laine Lopes Silva de Jesus, Karoline Almeida Piton, Beatriz Santos Costa, Beatriz Sena Moreira Gomes, Vinicius Moreira Porto, Emanuelly da Silva Oliveira, Cibele Luz Oliveira, Renato Fontana, Bianca Mendes Maciel, Mylene de Melo Silva, Lauro Juliano Marin, and Sandra Rocha Gadelha
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COVID-19 ,SARS-CoV-2 ,epidemiology ,risk factor ,community risk ,socio-economic status ,Microbiology ,QR1-502 - Abstract
The COVID-19 pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), challenged public health systems worldwide. Individuals in low-income countries/regions are still at individual and community risk concerning inequality, sanitation, and economic conditions. Besides, during the pandemic, the transmission in municipalities and communities in the countryside and less developed regions kept viral spread and required structured and strengthened clinical and laboratory surveillance. Here, we present an observational, analytic, cross-sectional study conducted using secondary data from the Laboratório de Farmacogenômica e Epidemiologia Molecular (LAFEM)-Universidade Estadual de Santa Cruz (UESC), to evaluate individual and community factors associated to SARS-CoV-2 infection in outpatients from different cities from Southern Region of Bahia State, in Brazil. The data were collected between June 2021 and May 2022. The SARS-CoV-2 positivity by RT-qPCR was correlated with low socio-economic indicators, including the Human development index (HDIc) and Average worker salary (AWSc). Besides, in general, females were less likely to test positive for SARS-CoV-2 (OR = 0.752; CI 95% 0.663–0.853; p < 0.0001), while brown individuals had more positivity for infection (p < 0.0001). In addition, those who had clinical symptoms were more likely to test positive for SARS-CoV-2 (OR = 6.000; CI 95% 4.932–7.299; p < 0.0001). Although dry cough, headache, and fever were the most frequent, loss of taste (OR = 5.574; CI 95% 4.334–7.186) and loss of smell (OR = 6.327; CI 95% 4.899–8.144) presented higher odds ratio to be positive to SARS-CoV-2 by RT-qPCR. Nonetheless, the distribution of these characteristics was not homogenous among the different cities, especially for age and gender. The dynamic of SARS-CoV-2 positivity differed between cities and the total population and reinforces the hypothesis that control strategies for prevention needed to be developed based on both individual and community risk levels to mitigate harm to individuals and the health system.
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- 2023
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11. Congenital CMV infection in a Brazilian neonatal intensive care unit: high prevalence among twin newborns
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Marin, Lauro Juliano, primary, dos Santos, Pérola Rodrigues, additional, Ramos, Felipe Charu, additional, dos Santos, Uener Ribeiro, additional, Marques, Marcílio, additional, de Carvalho, Luciana Debortoli, additional, Gadelha, Sandra Rocha, additional, and Aquino, Victor Hugo, additional
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- 2024
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12. COLETA DE AMOSTRAS PARA AVALIAÇÃO DE INFECÇÃO CONGÊNITA PELO CMV EM UTI NEONATAL
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Marin, Lauro Juliano, primary, Rios, Érika Pereira, additional, Pessotti, Laíza Ferreira, additional, Santos, Pérola Rodrigues dos, additional, Pereira, Marcelo Cordeiro, additional, and Gadelha, Sandra Rocha, additional
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- 2021
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13. Genomic surveillance of SARS-CoV-2 tracks early interstate transmission of P.1 lineage and diversification within P.2 clade in Brazil.
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Alessandra P Lamarca, Luiz G P de Almeida, Ronaldo da Silva Francisco, Lucymara Fassarella Agnez Lima, Kátia Castanho Scortecci, Vinícius Pietta Perez, Otavio J Brustolini, Eduardo Sérgio Soares Sousa, Danielle Angst Secco, Angela Maria Guimarães Santos, George Rego Albuquerque, Ana Paula Melo Mariano, Bianca Mendes Maciel, Alexandra L Gerber, Ana Paula de C Guimarães, Paulo Ricardo Nascimento, Francisco Paulo Freire Neto, Sandra Rocha Gadelha, Luís Cristóvão Porto, Eloiza Helena Campana, Selma Maria Bezerra Jeronimo, and Ana Tereza R Vasconcelos
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
The sharp increase of COVID-19 cases in late 2020 has made Brazil the new epicenter of the ongoing SARS-CoV-2 pandemic. The novel viral lineages P.1 (Variant of Concern Gamma) and P.2, respectively identified in the Brazilian states of Amazonas and Rio de Janeiro, have been associated with potentially higher transmission rates and antibody neutralization escape. In this study, we performed the whole-genome sequencing of 185 samples isolated from three out of the five Brazilian regions, including Amazonas (North region), Rio Grande do Norte, Paraíba and Bahia (Northeast region), and Rio de Janeiro (Southeast region) in order to monitor the spread of SARS-CoV-2 lineages in Brazil in the first months of 2021. Here, we showed a widespread dispersal of P.1 and P.2 across Brazilian regions and, except for Amazonas, P.2 was the predominant lineage identified in the sampled states. We estimated the origin of P.2 lineage to have happened in February, 2020 and identified that it has differentiated into new clades. Interstate transmission of P.2 was detected since March, but reached its peak in December, 2020 and January, 2021. Transmission of P.1 was also high in December and its origin was inferred to have happened in August 2020. We also confirmed the presence of lineage P.7, recently described in the southernmost region of Brazil, to have spread across the Northeastern states. P.1, P.2 and P.7 are descended from the ancient B.1.1.28 strain, which co-dominated the first phase of the pandemic in Brazil with the B.1.1.33 strain. We also identified the occurrence of a new lineage descending from B.1.1.33 that convergently carries the E484K mutation, N.9. Indeed, the recurrent report of many novel SARS-CoV-2 genetic variants in Brazil could be due to the absence of effective control measures resulting in high SARS-CoV2 transmission rates. Altogether, our findings provided a landscape of the critical state of SARS-CoV-2 across Brazil and confirm the need to sustain continuous sequencing of the SARS-CoV-2 isolates worldwide in order to identify novel variants of interest and monitor for vaccine effectiveness.
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- 2021
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14. Male Epispadias - Recognition at a glance
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Joana, Machado Morais, additional, Filipa, Martins, additional, Ana, Coelho, additional, Ceu, Mota, additional, Sandra, Rocha, additional, and Liliana, Pinho, additional
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- 2024
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15. Assessment of the Bioaccessibility and Bioavailability of the Phenolic Compounds of Prunus avium L. by in Vitro Digestion and Cell Model
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Joana Gonçalves, Rodrigo Ramos, Ângelo Luís, Sandra Rocha, Tiago Rosado, Eugenia Gallardo, and Ana Paula Duarte
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Chemistry ,QD1-999 - Published
- 2019
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16. VÍRUS LINFOTRÓPICO DA CÉLULA T HUMANA TIPO 1 (HTLV-1) NA BAHIA: UMA REVISÃO SISTEMÁTICA
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Santos, Lorena Conceição, primary, Santos, Francine Pinto dos, additional, Borges, Grasiely Faccin, additional, Gadelha, Sandra Rocha, additional, and Pinto, Carol Gonçalves, additional
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- 2020
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17. CONSULTORIA AD HOC EM SAÚDE COMO ESTRATÉGIA DE COMBATE À PANDEMIA PELA COVID-19
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Thaís dos Santos de Souza, João Pedro Neves Pessoa, Sandra Rocha Gadelha Mello, Soraya Dantas Santiago dos Anjos, and Vitória Solange Coelho Ferreira
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Palavras-chave: Extensão. Universidade. Sociedade. Infecção por coronavírus. ,Education (General) ,L7-991 ,Social sciences (General) ,H1-99 - Abstract
Desde a declaração da Organização Mundial de Saúde (OMS) classificando a infecção pelo SARS-COV-2 como pandemia, houve a necessidade da criação de medidas emergenciais para detectar, proteger, tratar e reduzir a transmissibilidade do vírus. Neste contexto, o presente trabalho visa divulgar os resultados obtidos da ação extensionista de consultoria ad hoc em saúde no combate a COVID-19, além das inferências e vivências da equipe multidisciplinar, interdisciplinar e intersetorial responsável por sua execução. Metodologicamente, trata-se de um relato de experiência, descritivo e de abordagem qualitativa sobre uma ação extensionista. Os resultados apontam que dos 42 municípios convidados, 38 pertencentes as microrregiões de saúde de Ilhéus, Itabuna e Valença retornaram solicitando adesão. Das demandas espontâneas, obteve-se a produção de 31 materiais técnico-científicos para (re)orientar as ações gerenciais ou educativas. Com isso, ressalta-se a importância das ações extensionistas e necessidade das consultorias ad hoc para auxiliar no combate a pandemia por COVID-19.
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- 2020
18. Relationship between clinical-epidemiological parameters and outcomes of patients with COVID-19 admitted to the intensive care unit: a report from a Brazilian hospital
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D’Carmo Sodré, Maisah Meyhr, primary, dos Santos, Uener Ribeiro, additional, Povoas, Heitor Portella, additional, Guzmán, Júlio Lenin, additional, Junqueira, Caroline, additional, Trindade, Tayana Oliveira, additional, Gadelha, Sandra Rocha, additional, Romano, Carla Cristina, additional, da Conceição, Aline Oliveira, additional, Gross, Eduardo, additional, Silva, Aline, additional, Rezende, Rachel Passos, additional, Fontana, Renato, additional, da Mata, Camila Pacheco Silveira Martins, additional, Marin, Lauro Juliano, additional, and de Carvalho, Luciana Debortoli, additional
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- 2023
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19. Characteristics and Factors Associated with SARS-CoV-2 Infections in Individuals That Attended Referral Hospitals from Southern Region of Bahia State, Brazil: A Surveillance Network Retrospective Study
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Fabrício Barbosa Ferreira, Galileu Barbosa Costa, Anaiá da Paixão Sevá, George Rego Albuquerque, Ana Paula Melo Mariano, Amanda Teixeira Sampaio Lopes, Hllytchaikra Ferraz Fehlberg, Íris Terezinha Santos de Santana, Pérola Rodrigues dos Santos, Luciano Cardoso Santos, Laine Lopes Silva de Jesus, Renato Fontana, Bianca Mendes Maciel, Mylene de Melo Silva, Luane Etienne Barreto, and Sandra Rocha Gadelha
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SARS-CoV-2 ,COVID-19 ,epidemiology ,risk factors ,healthcare professionals ,Brazil ,Microbiology ,QR1-502 - Abstract
In December 2019, a novel coronavirus was detected in Wuhan, China, and rapidly spread worldwide. In Brazil, to date, there have been more than 20,000,000 confirmed cases of COVID-19 and more than 550,000 deaths. The purpose of the current study was to determine the clinical and epidemiological profile of the population affected by COVID-19 that have attended referral hospitals in Southern region of Bahia State, to better understand the disease and its risk factors in order to enable more appropriate conduct for patients. An observational, descriptive, cross-sectional, exploratory study was conducted using secondary data collected from the Laboratório de Farmacogenômica e Epidemiologia Molecular, Universidade Estadual de Santa Cruz (LAFEM/UESC). Chi-squared and Fisher’s exact tests were applied to determine the association between clinical symptoms and laboratory results, and to identify risk factors associated with SARS-CoV-2 infection. A total of 3135 individuals with suspected severe respiratory illness were analyzed and 41.4% of them tested positive for SARS-CoV-2 infection. Male individuals and having comorbidities were risk factors significantly associated with SARS-CoV-2 infection (OR = 1.17 and OR = 1.37, respectively). Interestingly, being a healthcare professional was a significantly protective factor (OR = 0.81, p < 0.001). Our findings highlight the importance of routinely testing the population for early identification of infected individuals, and also provide important information to health authorities and police makers to improve control measures, management, and screening protocols.
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- 2021
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20. SARS-CoV-2 Infection in Cities from the Southern Region of Bahia State, Brazil: Analysis of Variables Associated in Both Individual and Community Level
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da Silva, Murillo Ferreira, primary, dos Santos, Uener Ribeiro, additional, Ferreira, Fabrício Barbosa, additional, Albuquerque, George Rego, additional, Mariano, Ana Paula Melo, additional, Fehlberg, Hllytchaikra Ferraz, additional, Santos de Santana, Íris Terezinha, additional, dos Santos, Pérola Rodrigues, additional, Santos, Luciano Cardoso, additional, Silva de Jesus, Laine Lopes, additional, Piton, Karoline Almeida, additional, Costa, Beatriz Santos, additional, Gomes, Beatriz Sena Moreira, additional, Porto, Vinicius Moreira, additional, Oliveira, Emanuelly da Silva, additional, Oliveira, Cibele Luz, additional, Fontana, Renato, additional, Maciel, Bianca Mendes, additional, Silva, Mylene de Melo, additional, Marin, Lauro Juliano, additional, and Gadelha, Sandra Rocha, additional
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- 2023
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21. The origin of HTLV-1 in southern Bahia by phylogenetic, mtDNA and β-globin analysis
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Aleluia, Milena Magalhães, Mello, Marco Antônio Gomes, Alcântara, Luiz Carlos Junior, Rego, Filipe Ferreira Almeida, de Souza Santos, Lucas Pereira, Galvão-Castro, Bernardo, de Souza Gonçalves, Marilda, de Oliveira, Túlio, Marin, Lauro Juliano, Sousa, Sandra Mara Bispo, and Gadelha, Sandra Rocha
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- 2015
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22. Herbivory and arbuscular mycorrhiza in natural populations of Datura stramonium L.: correlation with the availability of nutrients in the soil
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Ana Aguilar-Chama, Roger Guevara, and Sandra Rocha
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asignación de recursos ,intensidad de colonización por micorrizas ,interacciones multitróficas, . ,Solanaceae ,Botany ,QK1-989 - Abstract
Trophic interactions impose important costs to their host plants, affecting patterns of resource allocation. The relationship between host and consumers is also influenced by the availability of resources, e. g., soil nutrients. In this study, we explored the relationship among mycorrhiza-plant-herbivore in natural populations of Datura stramonium and their correlation with the content of phosphorus, nitrogen and carbon in the soil. We estimated the vegetative and reproductive biomass of plants, the arbuscular mycorrhizal colonization and the level of herbivory in populations of D. stramonium. The local abundance of D. stramonium was negatively related to the content of phosphorus in the soil. In contrast, soil carbon concentration affected positively the vegetative and reproductive mass of D. stramonium, although it was negatively correlated with the specific leaf area (SLA). Of the trophic interactions only herbivory was significantly correlated with the SLA and no relationship was detected between the two interaction types. The lack of significant response of mycorrhizae to the soil nutrients concentration, plant performance, and herbivory may result from the stochasticity in the availability of mycorrhizal inoculum (identity and abundance) in the populations studied.
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- 2016
23. Percepción y manejo del insomnio desde los pacientes y profesionales en atención primaria: un abordaje cualitativo
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Sandra Rocha de la Fuente and Ana María Palmar Santos
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Investigación Cualitativa ,Trastornos del Inicio y del Mantenimiento del Sueño ,Atención Primaria ,Conducta de Búsqueda de Ayuda ,Sueño ,Medicine ,Nursing ,RT1-120 - Abstract
Objetivo: Comprender la percepción del insomnio por parte de las personas que lo padecen y los profesionales que les atienden en el sistema madrileño de salud para así poder profundizar en las barreras que limitan el acceso y su manejo en el primer nivel asistencia. Metodología: estudio cualitativo, enmarcado en la corriente constructivista, llevándose a cabo entrevistas en profundidad con los pacientes y grupos de discusión con los profesionales. Las entrevistas se realizarán a personas mayores de edad, diagnosticadas de insomnio y que hayan recibido tratamiento para el insomnio en su centro de salud de la Comunidad de Madrid. Por otra parte, los grupos de discusión integrarán profesionales de enfermería y de medicina que trabajen en centros de salud de la Comunidad de Madrid y que atiendan en sus consultas casos de insomnio. El análisis de los datos se llevará a cabo mediante el análisis de las transcripciones de las entrevistas y de los grupos de discusión, extrayéndose categorías y estableciéndose comparaciones entre los datos a varios niveles de significado. Conclusiones: el estudio permitirá conocer en mayor profundidad el problema del insomnio, lo que favorecerá la mejor comprensión por parte del usuario y profesional, así como facilitará la capacidad de mejorar la atención prestada, comprendiendo las barreras que dificultan el acceso de estas personas a los centros de salud y las dificultades en el manejo de los diferentes abordajes propuestos desde el sistema sanitario.
- Published
- 2018
24. STEAP1 regulation and its influence modulating the response of LNCaP prostate cancer cells to bicalutamide, enzalutamide and apalutamide
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Sandra Rocha, Daniel Nascimento, Ana Cardoso, Luís Passarinha, Sílvia Socorro, and Cláudio Maia
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Cancer Research ,Oncology ,Genetics ,Molecular Medicine ,Molecular Biology ,Biochemistry - Published
- 2023
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25. Orientation of α-Synuclein at Negatively Charged Lipid Vesicles: Linear Dichroism Reveals Time-Dependent Changes in Helix Binding Mode
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Pernilla Wittung-Stafshede, Ranjeet Kumar, Sandra Rocha, and Bengt Nordén
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Protein Conformation, alpha-Helical ,Steric effects ,Chemistry ,Vesicle ,Kinetics ,Phosphatidylglycerols ,Phosphatidylserines ,General Chemistry ,Linear dichroism ,Biochemistry ,Article ,Catalysis ,Protein Helix ,Colloid and Surface Chemistry ,Membrane ,Helix ,alpha-Synuclein ,Biophysics ,lipids (amino acids, peptides, and proteins) ,Amino Acid Sequence ,Shear flow ,Unilamellar Liposomes ,Protein Binding - Abstract
The neuronal protein α-synuclein, linked to Parkinson’s disease, binds to negatively charged vesicles adopting a partial α-helix structure, but helix arrangement at the vesicle surface is not fully understood. Using linear dichroism spectroscopy (LD), we study the interaction of monomeric α-synuclein with large unilamellar vesicles of 1,2-dioleoyl-sn-glycero-3-phospho-l-serine (DOPS), 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-l-serine (POPS), and 1,2-dioleoyl-sn-glycero-3-phospho-(1′-rac-glycerol) (DOPG) under mild shear flow. The LD data of oriented lipid vesicles show that the long axis of the protein helix is oriented preferentially perpendicular to the membrane normal but deviates from a uniform in-plane distribution. Upon initial binding, a fraction of helices are oriented in the direction of least curvature for all ellipsoid-shaped vesicles at a lipid:protein molar ratio of 100. However, at a lower protein concentration the helices distribute uniformly on DOPS and POPS vesicles. In all cases, the α-synuclein helices rearrange with time (minute time scale) in the shear flow and begin to tilt into the vesicle membrane. Faster reorientation kinetics in the presence of flow suggests that modulation of membrane dynamics, by thermal or shear-dynamic activation, may overcome steric barriers by what may be called “flow catalysis”.
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- 2021
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26. Avaliação dos erros de dispensação
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Claudia Aparecida Avelar Ferreira, Isabelle Cristina de Oliveira Santos, and Sandra Rocha de Souza
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gestão ,Medicine ,Medicine (General) ,R5-920 - Abstract
Os erros de dispensação estão compreendidos entre os erros de medicação que podem causar prejuízo na segurança do paciente, acarretando eventos adversos evitáveis. O objetivo do estudo foi levantar a publicação bibliográfica sobre o tema, no período de 2004 a 2014, analisando estudos que identificaram os erros de dispensação, as causas, consequências e medidas de prevenção em nível internacional e de Brasil. Foi realizada uma revisão da literatura sobre erros de dispensação aplicando-se a técnica de bibliometria. O estudo resultou em 767 artigos pesquisados, dos quais 12 foram selecionados e analisados. Portanto, a produção bibliográfica sobre erros de dispensação deve ser ampliada, para que seja oferecida fonte de dados para os possíveis erros, as causas e as formas de evitá-los.
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- 2014
27. Clinical, epidemiological aspects, and trends of Hepatitis B in Brazil from 2007 to 2018
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Ivan Bezerra Allaman, Sandra Rocha Gadelha, Galileu Barbosa Costa, and Cathianne Sacramento Pinto
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0301 basic medicine ,Adult ,Male ,medicine.medical_specialty ,Hepatitis B virus ,Viral epidemiology ,Adolescent ,Epidemiology ,Science ,MEDLINE ,Diseases ,medicine.disease_cause ,History, 21st Century ,Article ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Environmental health ,Virology ,medicine ,Humans ,Public Health Surveillance ,Young adult ,Aged ,Aged, 80 and over ,Multidisciplinary ,business.industry ,Public health ,Health care ,Infant ,Hepatitis B ,Middle Aged ,medicine.disease ,Vaccination ,030104 developmental biology ,Risk factors ,Child, Preschool ,Medicine ,Observational study ,Female ,Disease Susceptibility ,business ,030217 neurology & neurosurgery ,Brazil - Abstract
Hepatitis B virus (HBV) infection is a concern for public health due to its high prevalence, high infectivity, morbidity, and mortality worldwide. Brazil presents a low HBV prevalence, but has considerable heterogeneity among its geographic regions. Here, we describe the epidemiological profile of HBV infection in different regions of Brazil during 2007–2018, as well as the historical trends associated with the infection. We conducted an observational, ecological time-series study using secondary data collected from the National Notifiable Diseases Information System (SINAN). Our findings suggest that HBV infection was more likely to occur in young, sexually active adults. Individuals from Northeast and Midwest regions were more likely to present acute HBV infection, while individuals from South region were more likely to present chronic HBV infection, reinforcing that specific strategies are required for each particular region. Additionally, we observed a general decreasing trend of infection starting in 2014, however there was an increasing trend of infection in men and in individuals over 40 years old. Although we observed a decreasing trend in HBV infection, active surveillance is needed to prevent HBV spread and possible epidemics, as well as encouraging the vaccination of adults, especially young adult males. Our findings can inform the conduct of large-scale observational studies to evaluate clinical, economical, and social impacts of HBV infections, leading to improved social policies. Finally, our results highlight the need to improve data quality and completeness of epidemiological data, minimizing eventual errors that can make prevention and control strategies difficult.
- Published
- 2021
28. Are lipid disorders involved in the predominance of human T-lymphotropic virus-1 infections in women?
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Luciana Debortoli de Carvalho, Sandra Rocha Gadelha, Lauro Juliano Marin, Gustavo Eustaquio Alvim Brito-Melo, Camila Pacheco Silveira Martins, Flavio Guimarães da Fonseca, and Edel Figueiredo Barbosa-Stancioli
- Subjects
HTLV-1 ,Lipid disorders and sex differences. ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
Abstract INTRODUCTION : The human T-lymphotropic virus-1 (HTLV-1) is associated with chronic inflammatory diseases such as HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), a chronic inflammatory disease. Disturbances in lipid metabolism are involved in inflammatory and demyelinating diseases. METHODS : Plasma levels of triglycerides, total cholesterol, and fractions of HTLV-1-infected individuals of both sexes with different clinical progressions were determined. RESULTS : Elevated levels of triglyceride and very low-density lipoproteins (VLDL) were exclusively detected in HTLV-1-infected women from asymptomatic and HAM/TSP groups compared with uninfected individuals (p = 0.02). CONCLUSIONS : Elevated triglyceride and VLDL levels in HTLV-1-infected women may be related to the predominance of HAM/TSP in women.
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- 2015
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29. Single-vesicle imaging reveals lipid-selective and stepwise membrane disruption by monomeric α-synuclein
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Sandra Rocha, Fredrik Höök, Björn Agnarsson, Pernilla Wittung-Stafshede, Vladimir P. Zhdanov, and Jonas K. Hannestad
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Lipid Bilayers ,Nerve Tissue Proteins ,Context (language use) ,Protein aggregation ,Synaptic vesicle ,Membrane Lipids ,chemistry.chemical_compound ,α-synuclein ,Humans ,membrane interaction ,Inner mitochondrial membrane ,Neurons ,Phosphatidylglycerol ,Membranes ,Multidisciplinary ,Chemistry ,Vesicle ,Parkinson Disease ,Phosphatidylglycerols ,Phosphatidylserine ,Biological Sciences ,Fluoresceins ,Kinetics ,Biophysics and Computational Biology ,single-vesicle scattering ,Membrane ,lipid vesicle ,Physical Sciences ,alpha-Synuclein ,Biophysics ,Protein Binding - Abstract
Significance Neurodegenerative diseases are increasing among the world's population, but there are no cures. These disorders all involve proteins that assemble into amyloid fibers which results in brain cell death. Evidence suggests that association of these proteins with lipid membranes is crucial for both functional and pathological roles. In Parkinson's disease, the involved protein, α-synuclein, is thought to function in trafficking of lipid vesicles in the brain. In search of mechanistic origins, increasing focus is put on identifying neurotoxic reactions induced by membrane interactions. To contribute new clues to this question, we here employed a new surface-sensitive scattering microscopy technique. With this approach, we discovered that α-synuclein perturbs vesicles in a stepwise and lipid-dependent fashion already at very low protein coverage., The interaction of the neuronal protein α-synuclein with lipid membranes appears crucial in the context of Parkinson’s disease, but the underlying mechanistic details, including the roles of different lipids in pathogenic protein aggregation and membrane disruption, remain elusive. Here, we used single-vesicle resolution fluorescence and label-free scattering microscopy to investigate the interaction kinetics of monomeric α-synuclein with surface-tethered vesicles composed of different negatively charged lipids. Supported by a theoretical model to account for structural changes in scattering properties of surface-tethered lipid vesicles, the data demonstrate stepwise vesicle disruption and asymmetric membrane deformation upon α-synuclein binding to phosphatidylglycerol vesicles at protein concentrations down to 10 nM (∼100 proteins per vesicle). In contrast, phosphatidylserine vesicles were only marginally affected. These insights into structural consequences of α-synuclein interaction with lipid vesicles highlight the contrasting roles of different anionic lipids, which may be of mechanistic relevance for both normal protein function (e.g., synaptic vesicle binding) and dysfunction (e.g., mitochondrial membrane interaction).
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- 2020
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30. Fatores que dificultam o acompanhamento dos pais no processo de ensino e aprendizagem dos alunos do Ensino médio da Escola Estadual Instituto Bereano de Coari no município de Coari-AM, Brasil 2019/2021
- Author
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Maria Sandra Rocha da Silva
- Published
- 2022
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31. Circumference measured at different sites of the trunk and cardiometabolic risk factors. DOI: 10.5007/1980-0037.2011v13n4p250
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Stênio Carvalho Santos, Sandra Rocha Gadelha, Rosinei Barros, Luiz Fernando Paulino Ribeiro, and Viviane Valentim Alves
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Anthropometry ,Central obesity ,Risk factors. ,Sports ,GV557-1198.995 ,Medicine (General) ,R5-920 - Abstract
The objectives of this study were to compare waist and abdominal circumference and to analyze their association with cardiometabolic risk factors in employees of a university in Bahia. Fifty-five men and 71 women (36.4 ± 11.2 years) were submitted to anthropometric assessment and measurement of systolic and diastolic blood pressure, blood glucose, triglycerides, total cholesterol, and HDL and LDL fractions. Despite strong correlations (P < 0.01) between the different measures (r > 0.93), waist circumference was significantly lower than abdominal circumference in the two genders, with the mean difference being greater in women (8.6 ± 4.1 vs 3.8 ± 4.2 cm; P < 0.01). Waist circumference was significantly associated with two and four risk factors in men and women, respectively. On the other hand, abdominal circumference was significantly associated with one risk factor in men and with five factors in women. No significant differences (P > 0.05) between correlation coefficients were observed in cases in which the two circumference measures were significantly associated with one risk factor. These results suggest that the site of measurement has substantial influence on circumference measured in the lower region of the trunk, particularly in women. However, there is no clear evidence of the superiority of a single measure in terms of the association with traditional cardiometabolic risk factors in the Brazilian sample studied. Further investigations are needed to compare the predictive capacity of different circumference measures for the development of risk factors and cardiovascular diseases in different populations.
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- 2011
32. Circumference measured at different sites of the trunk and cardiometabolic risk factors.
- Author
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Viviane Valentim Alves, Luiz Fernando Paulino Ribeiro, Rosinei Barros, Sandra Rocha Gadelha, and Stênio Carvalho Santos
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antropometria ,obesidade central ,fatores de risco. ,Sports ,GV557-1198.995 ,Medicine (General) ,R5-920 - Abstract
The objectives of this study were to compare waist and abdominal circumference and to analyze their association with cardiometabolic risk factors in employees of a university in Bahia. Fifty-five men and 71 women (36.4 ± 11.2 years) were submitted to anthropometric assessment and measurement of systolic and diastolic blood pressure, blood glucose, triglycerides, total cholesterol, and HDL and LDL fractions. Despite strong correlations (P < 0.01) between the different measures (r > 0.93), waist circumference was significantly lower than abdominal circumference in the two genders, with the mean difference being greater in women (8.6 ± 4.1 vs 3.8 ± 4.2 cm; P < 0.01). Waist circumference was significantly associated with two and four risk factors in men and women, respectively. On the other hand, abdominal circumference was significantly associated with one risk factor in men and with five factors in women. No significant differences (P > 0.05) between correlation coefficients were observed in cases in which the two circumference measures were significantly associated with one risk factor. These results suggest that the site of measurement has substantial influence on circumference measured in the lower region of the trunk, particularly in women. However, there is no clear evidence of the superiority of a single measure in terms of the association with traditional cardiometabolic risk factors in the Brazilian sample studied. Further investigations are needed to compare the predictive capacity of different circumference measures for the development of risk factors and cardiovascular diseases in different populations.
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- 2011
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33. sj-pdf-1-lup-10.1177_09612033221074192 ��� Supplemental Material for Efficacy of hydroxychloroquine in the prevention of thromboembolic events: A systematic review and meta-analysis
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Barros Edington, Fernando Luiz, de Rezende, Daniel Fraga, dos Santos, Luis Fernando Sim��es, Garcia, Rayssa Valandro, Gadelha, Sandra Rocha, and Santiago, Mittermayer Barreto
- Subjects
111702 Aged Health Care ,FOS: Health sciences - Abstract
Supplemental Material, sj-pdf-1-lup-10.1177_09612033221074192 for Efficacy of hydroxychloroquine in the prevention of thromboembolic events: A systematic review and meta-analysis by Fernando Luiz Barros Edington, Daniel Fraga de Rezende, Luis Fernando Sim��es dos Santos, Rayssa Valandro Garcia, Sandra Rocha Gadelha and Mittermayer Barreto Santiago in Lupus
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- 2022
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34. Efficacy of hydroxychloroquine in the prevention of thromboembolic events: A systematic review and meta-analysis
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Barros Edington, Fernando Luiz, primary, de Rezende, Daniel Fraga, additional, dos Santos, Luis Fernando Simões, additional, Garcia, Rayssa Valandro, additional, Gadelha, Sandra Rocha, additional, and Santiago, Mittermayer Barreto, additional
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- 2022
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35. COLETA DE AMOSTRAS PARA AVALIAÇÃO DE INFECÇÃO CONGÊNITA PELO CMV EM UTI NEONATAL
- Author
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Laíza Ferreira Pessotti, Lauro Juliano Marin, Marcelo Cordeiro Pereira, Sandra Rocha Gadelha, Érika Pereira Rios, and Pérola Rodrigues dos Santos
- Published
- 2021
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36. Characteristics and Factors Associated with SARS-CoV-2 Infections in Individuals That Attended Referral Hospitals from Southern Region of Bahia State, Brazil: A Surveillance Network Retrospective Study
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Ferreira, Fabrício Barbosa, primary, Barbosa Costa, Galileu, additional, Sevá, Anaiá da Paixão, additional, Albuquerque, George Rego, additional, Mariano, Ana Paula Melo, additional, Sampaio Lopes, Amanda Teixeira, additional, Fehlberg, Hllytchaikra Ferraz, additional, Santos de Santana, Íris Terezinha, additional, dos Santos, Pérola Rodrigues, additional, Santos, Luciano Cardoso, additional, Silva de Jesus, Laine Lopes, additional, Fontana, Renato, additional, Maciel, Bianca Mendes, additional, Silva, Mylene de Melo, additional, Barreto, Luane Etienne, additional, and Gadelha, Sandra Rocha, additional
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- 2021
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37. Could HPV be implicated in oral and oropharyngeal carcinoma in Bahia, Brazil?
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Sandra Rocha Gadelha, Francine Pinto dos Santos, Galileu Barbosa Costa, Uener Ribeiro dos Santos, Kariton Magalhães Bronze, Cláudia Leal Macedo, and Lauro Juliano Marin
- Abstract
Tobacco use and alcohol consumption are the principal risk factors implicated in head and neck cancers, however, the presence of HPV has also been associated. Here, we sought to correlate risk factors such as socio-demographic and behavioral variables, and the presence of HPV, to head and neck cancer occurrence. During August 2016 – December 2017, paraffin embedded samples from two anatomic pathology services of two populous cities in the state of Bahia were analyzed. To detect the presence of HPV, the formalin-fixed, paraffin embedded tissue samples were initially deparaffinized for subsequent DNA extraction. Nested-PCR was applied to detect HPV DNA, and viral subtyping was confirmed through specific PCR primer and sequencing. Most of the patients confirmed being smokers and drinkers. HPV was detected only in 7% of the samples, a histopathological diagnosed benign lesion of laryngeal papilloma (HPV 11), and a malignant lesion of the hard palate (HPV type not specified). Our findings indicated that tobacco use and alcohol consumption were correlated as the highest risk factors for the development of neoplasms. Although HPV prevalence was low, we could not neglect HPV involvement in head and neck cancers in individuals from Bahia State. Furthermore, HPV+ cancers respond better to therapy, therefore, defining the type of tumor is important to determine the most effective treatment.
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- 2020
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38. Alteraciones citogenéticas en trabajadoras con riesgo ocupacional de exposición a plaguicidas en cultivos de flores en Bogotá.
- Author
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Marcela Varona, Omayda Cárdenas, Cecilia Crane, Sandra Rocha, Giselle Cuervo, and Jaime Vargas
- Subjects
pesticides ,chromosome aberrations ,floriculture ,Colombia ,Medicine ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
Se determinó la frecuencia de alteraciones citogenéticas (micronúcleos y aberraciones cromosómicas), deficiencias en la reparación del ADN y actividad de la acetilcolinesterasa como biomarcadores de exposición a plaguicidas organofosforados y carbamatos en trabajadoras de cultivos de flores en Bogotá. Se realizó un estudio descriptivo en 31 trabajadoras con riesgo ocupacional de exposición a plaguicidas y 30 sin riesgo; la información se obtuvo por medio de una entrevista. Se emplearon como pruebas citogenéticas estándar la frecuencia de aberraciones cromosómicas y de micronúcleos; la prueba de reto (challenge assay) se utilizó para determinar la respuesta a los rayos gamma y como indicador de deficiencias en la reparación del ADN. Los datos se analizaron por porcentaje de células aberrantes, frecuencia de aberraciones cromosómicas y rompimiento cromatídico en 100 células en metafase analizadas en cada trabajadora. En los ensayos citogenéticos, se encontró que el grupo expuesto presentó frecuencias mayores de células con aberraciones cromosómicas y micronúcleos que el grupo no expuesto, con diferencias significativas (p=0,02); sin embargo, con la prueba de reto, la diferencia no fue significativa (p>0,1). Estos hallazgos requieren ser confirmados por estudios de tipo analítico que involucren exámenes clínicos; además, es necesario un mayor número de biomarcadores para la monitorización de trabajadores expuestos a plaguicidas en cualquier situación.
- Published
- 2003
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39. Molecular epidemiology of human immunodeficiency virus-1 in the state of Ceará, Northeast, Brazil
- Author
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Sandra Rocha Gadelha, Nice Shindo, José Napoleão Monte Cruz, Mariza Gonçalves Morgado, and Bernardo Galvão-Castro
- Subjects
human immunodeficiency virus ,molecular epidemiology ,Ceará ,Brazil ,Microbiology ,QR1-502 ,Infectious and parasitic diseases ,RC109-216 - Abstract
We analyzed, by env and gag heteroduplex mobility assay, 149 human immunodeficiency virus (HIV-1) positive samples collected in Ceará during the year 2000. The prevalence of subtype B was 81.2% and the prevalence of subtype F and B/F recombinants were both 2.7%. Eight (5.4%) and 12 (8%) out of 149 samples showed indeterminate results in the env and gag analysis respectively. By FokI restriction fragment length polymorphism, 34% of the subtype B samples were identified as the typical Brazilian subtype B.In the present study, we identified HIV-1 subtype F and B/F in Ceará for the first time. Our results contribute to the understanding of HIV in Brazil, and may prove useful for the development of vaccine candidates.
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- 2003
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40. Synaptic vesicle mimics affect the aggregation of wild-type and A53T α-synuclein variants differently albeit similar membrane affinity
- Author
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István T. Horváth, Pernilla Wittung-Stafshede, Sandra Rocha, and Ranjeet Kumar
- Subjects
Amyloid ,small unilamellar vesicles ,Bioengineering ,Protein aggregation ,010402 general chemistry ,Fibril ,01 natural sciences ,Biochemistry ,Synaptic vesicle ,protein aggregation ,03 medical and health sciences ,amyloid fibrils ,Protein Aggregates ,kinetic profiles ,Fragmentation (cell biology) ,Molecular Biology ,Unilamellar Liposomes ,030304 developmental biology ,0303 health sciences ,Chemistry ,Vesicle ,Cell Membrane ,Wild type ,membrane-bound α-synuclein ,0104 chemical sciences ,Membrane ,Mutation ,Biophysics ,alpha-Synuclein ,Original Article ,Mutant Proteins ,Synaptic Vesicles ,Biotechnology ,Protein Binding - Abstract
α-Synuclein misfolding results in the accumulation of amyloid fibrils in Parkinson’s disease. Missense protein mutations (e.g. A53T) have been linked to early onset disease. Although α-synuclein interacts with synaptic vesicles in the brain, it is not clear what role they play in the protein aggregation process. Here, we compare the effect of small unilamellar vesicles (lipid composition similar to synaptic vesicles) on wild-type (WT) and A53T α-synuclein aggregation. Using biophysical techniques, we reveal that binding affinity to the vesicles is similar for the two proteins, and both interact with the helix long axis parallel to the membrane surface. Still, the vesicles affect the aggregation of the variants differently: effects on secondary processes such as fragmentation dominate for WT, whereas for A53T, fibril elongation is mostly affected. We speculate that vesicle interactions with aggregate intermediate species, in addition to monomer binding, vary between WT and A53T, resulting in different consequences for amyloid formation.
- Published
- 2019
41. Genomic surveillance of SARS-CoV-2 tracks early interstate transmission of P.1 lineage and diversification within P.2 clade in Brazil
- Author
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Lamarca, Alessandra P., primary, de Almeida, Luiz G. P., additional, Francisco, Ronaldo da Silva, additional, Lima, Lucymara Fassarella Agnez, additional, Scortecci, Kátia Castanho, additional, Perez, Vinícius Pietta, additional, Brustolini, Otavio J., additional, Sousa, Eduardo Sérgio Soares, additional, Secco, Danielle Angst, additional, Santos, Angela Maria Guimarães, additional, Albuquerque, George Rego, additional, Mariano, Ana Paula Melo, additional, Maciel, Bianca Mendes, additional, Gerber, Alexandra L., additional, Guimarães, Ana Paula de C., additional, Nascimento, Paulo Ricardo, additional, Neto, Francisco Paulo Freire, additional, Gadelha, Sandra Rocha, additional, Porto, Luís Cristóvão, additional, Campana, Eloiza Helena, additional, Jeronimo, Selma Maria Bezerra, additional, and Vasconcelos, Ana Tereza R., additional
- Published
- 2021
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42. C-terminal truncation of α-synuclein alters DNA structure from extension to compaction
- Author
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Pernilla Wittung-Stafshede, Sandra Rocha, Ranjeet Kumar, Kai Jiang, and Fredrik Westerlund
- Subjects
0301 basic medicine ,C terminal truncation ,Truncation ,Biophysics ,Biochemistry ,Protein Aggregation, Pathological ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Protein Domains ,medicine ,Humans ,Amino Acid Sequence ,Molecular Biology ,Amyloid fibers ,Regulation of gene expression ,Chemistry ,Atomic force microscopy ,Parkinson Disease ,Cell Biology ,DNA ,Cell nucleus ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,alpha-Synuclein ,Nucleic Acid Conformation ,α synuclein - Abstract
Parkinson's disease (PD) is linked to aggregation of the protein α-synuclein (aS) into amyloid fibers. aS is proposed to regulate synaptic activity and may also play a role in gene regulation via interaction with DNA in the cell nucleus. Here, we address the role of the negatively-charged C-terminus in the interaction between aS and DNA using single-molecule techniques. Using nanofluidic channels, we demonstrate that truncation of the C-terminus of aS induces differential effects on DNA depending on the extent of the truncation. The DNA extension increases for full-length aS and the (1-119)aS variant, but decreases about 25% upon binding to the (1-97)aS variant. Atomic force microscopy imaging showed full protein coverage of the DNA at high aS concentration. The characterization of biophysical properties of DNA when in complex with aS variants may provide important insights into the role of such interactions in PD, especially since C-terminal aS truncations have been found in clinical samples from PD patients.
- Published
- 2021
43. Genomic surveillance of SARS-CoV-2 tracks early interstate transmission of P.1 lineage and diversification within P.2 clade in Brazil
- Author
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Lucymara Fassarella Agnez Lima, Sandra Rocha Gadelha, Angela Santos, Bianca Mendes Maciel, Alessandra P Lamarca, Eloiza Helena Campana, Francisco Paulo Freire Neto, Danielle Secco, Luís Cristóvão Porto, Ana Paula de C Guimarães, Ana Paula Melo Mariano, George Rêgo Albuquerque, Ronaldo da Silva Francisco, Alexandra L. Gerber, Luiz G P de Almeida, Selma M. B. Jeronimo, Otávio J. B. Brustolini, Ana Tereza Ribeiro de Vasconcelos, Vinícius Pietta Perez, Katia Castanho Scortecci, Eduardo Sérgio Soares Sousa, and Paulo Ricardo Porfírio do Nascimento
- Subjects
RNA viruses ,Viral Diseases ,Coronaviruses ,Epidemiology ,RC955-962 ,Geographical locations ,law.invention ,Medical Conditions ,law ,Arctic medicine. Tropical medicine ,Pandemic ,Clade ,Pathology and laboratory medicine ,Phylogeny ,Data Management ,Strain (biology) ,High-Throughput Nucleotide Sequencing ,Phylogenetic Analysis ,Genomics ,Medical microbiology ,Phylogenetics ,Infectious Diseases ,Transmission (mechanics) ,Viral evolution ,Viruses ,SARS CoV 2 ,Pathogens ,Public aspects of medicine ,RA1-1270 ,Brazil ,Research Article ,Computer and Information Sciences ,Lineage (genetic) ,SARS coronavirus ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Zoology ,Genome, Viral ,Biology ,Diversification (marketing strategy) ,Microbiology ,Viral Evolution ,Virology ,Genetic variation ,Genetics ,Humans ,Evolutionary Systematics ,Pandemics ,Taxonomy ,Medicine and health sciences ,Evolutionary Biology ,SARS-CoV-2 ,Organisms ,Viral pathogens ,Public Health, Environmental and Occupational Health ,Biology and Life Sciences ,COVID-19 ,Genetic Variation ,Covid 19 ,South America ,Organismal Evolution ,Microbial pathogens ,Microbial Evolution ,Biological dispersal ,People and places - Abstract
The sharp increase of COVID-19 cases in late 2020 has made Brazil the new epicenter of the ongoing SARS-CoV-2 pandemic. The novel viral lineages P.1 (Variant of Concern Gamma) and P.2, respectively identified in the Brazilian states of Amazonas and Rio de Janeiro, have been associated with potentially higher transmission rates and antibody neutralization escape. In this study, we performed the whole-genome sequencing of 185 samples isolated from three out of the five Brazilian regions, including Amazonas (North region), Rio Grande do Norte, Paraíba and Bahia (Northeast region), and Rio de Janeiro (Southeast region) in order to monitor the spread of SARS-CoV-2 lineages in Brazil in the first months of 2021. Here, we showed a widespread dispersal of P.1 and P.2 across Brazilian regions and, except for Amazonas, P.2 was the predominant lineage identified in the sampled states. We estimated the origin of P.2 lineage to have happened in February, 2020 and identified that it has differentiated into new clades. Interstate transmission of P.2 was detected since March, but reached its peak in December, 2020 and January, 2021. Transmission of P.1 was also high in December and its origin was inferred to have happened in August 2020. We also confirmed the presence of lineage P.7, recently described in the southernmost region of Brazil, to have spread across the Northeastern states. P.1, P.2 and P.7 are descended from the ancient B.1.1.28 strain, which co-dominated the first phase of the pandemic in Brazil with the B.1.1.33 strain. We also identified the occurrence of a new lineage descending from B.1.1.33 that convergently carries the E484K mutation, N.9. Indeed, the recurrent report of many novel SARS-CoV-2 genetic variants in Brazil could be due to the absence of effective control measures resulting in high SARS-CoV2 transmission rates. Altogether, our findings provided a landscape of the critical state of SARS-CoV-2 across Brazil and confirm the need to sustain continuous sequencing of the SARS-CoV-2 isolates worldwide in order to identify novel variants of interest and monitor for vaccine effectiveness., Author summary Since its first detection in December 2019, the SARS-CoV-2 has evolved into more than a thousand recognized lineages. Several of these lineages are known to have higher transmissibility or better escape from the immune system. One of them is the P.1 lineage, also known as the variant of concern Gamma. It was first discovered in Brazil in December 2020 and has quickly replaced the previous lineage dominating the country, P.2. We used genomic data from SARS-CoV-2 samples that were collected in the first months of 2021 to analyze how P.1, P.2 and other lineages had spread across Brazil. Our research has identified that P.1 lineage was already present in several states of Brazil almost two months before its first detection in the state of Amazonas. Our work sheds light on the importance of continuous monitoring of SARS-CoV-2 lineages in historically understudied regions to early detect and control the spread of new variants of concern.
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- 2021
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44. Spouted bed drying of milk–blackberry mixture: Material thermal properties and process energy aspects
- Author
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Sandra Rocha, Vitor César Louzi, Rafael Luiz Giannella, Tiago Damas Martins, Matheus Boeira Braga, and Vitor Kim Fujita
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Work (thermodynamics) ,Materials science ,General Chemical Engineering ,Thermal ,Enthalpy ,Process control ,Thermodynamics ,Energy consumption ,Glass transition ,Food Science ,Efficient energy use ,Volumetric flow rate - Abstract
This work presents the determination of the thermal properties of a milk–blackberry pulp mixture (25–75%, vol/vol), and of the powder obtained by spouted bed drying. Based on the experimental data, polynomial and artificial neural networks (ANNs) correlations were proposed to predict the specific heat as a function of temperature. The effects of operating variables (air temperature, atomization pressure, and feed flow rate), on the energy efficiency (EE) and on the specific consumption of energy (e) were evaluated using a 2³‐factorial design. Afterward, the effects of feeding mode (atomization or dripping), on energy aspects were analyzed. The fusion of powder fat crystals occurred at 1°C and at 16°C, glass transition between 27°C and 34°C, and proteins denaturation starting at 87°C. The ANNs presented higher accuracy in the specific heat prediction, with mean deviation as low as 0.5%. The inlet air temperature and the feed flow rate have affected the energy parameters, but the atomization pressure and the interaction among these variables did not. The EE ranged from 7.3 to 23.2% and the e from 10.6 to 33.8 MJ/kg. Besides the reuse of the outlet air, the drip‐feeding mode could be an alternative to decrease the net energy consumption of the drying process. PRACTICAL APPLICATIONS: This work presents the determination of melting and glass transition temperatures, melting enthalpy, and specific heat of the paste milk–blackberry pulp (25%:75%, vol/vol) and/or powder, which are important characteristics for equipment dimensioning, process control, product quality, and to determine storage conditions. We also proposed ANN‐based correlations to relate the specific heat of the paste and powder as a function of temperature. The ANNs equations showed high accuracy and were used in the analysis of the energy aspects of the spouted bed drying process. Statistical analysis of energy aspects as a function of operating variables was performed and two linear response models were obtained, allowing to predict the specific consumption of energy and energy efficiency of the process. Herein, we suggest the potential use of DSC analysis and ANN techniques as a powerful combination to obtain information about food products and process design.
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- 2021
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45. The use of saliva as a practical and feasible alternative to urine in large-scale screening for congenital cytomegalovirus infection increasesinclusion and detection rates
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Emanuelle Santos de Carvalho Cardoso, Bruna Laís Santos de Jesus, Luciano Gama da Silva Gomes, Sandra Mara Bispo Sousa, Sandra Rocha Gadelha, and Lauro Juliano Marin
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Congenital cytomegalovirus ,Congenital infection ,Neonatal screening ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
INTRODUCTION: Although urine is considered the gold-standard material for the detection of congenital cytomegalovirus (CMV) infection, it can be difficult to obtain in newborns. The aim of this study was to compare the efficiency of detection of congenital CMV infection in saliva and urine samples. METHODS: One thousand newborns were included in the study. Congenital cytomegalovirus deoxyribonucleic acid (DNA) was detected by polymerase chain reaction (PCR). RESULTS: Saliva samples were obtained from all the newborns, whereas urine collection was successful in only 333 cases. There was no statistically significant difference between the use of saliva alone or saliva and urine collected simultaneously for the detection of CMV infection. CONCLUSIONS: Saliva samples can be used in large-scale neonatal screening for CMV infection.
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- 2015
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46. [ID 55351] ETNIA AUTODECLARADA E ANCESTRALIDADE GENÔMICA EM MULHERES DO SUL DA BAHIA COM INCONTINÊNCIA URINÁRIA: ESTUDO CASO – CONTROLE
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Sandra Rocha Gadelha, Marco Antônio Costa, Sandra Mara Bispo Sousa, Pollyanna Dórea Gonzaga, and Ohana Luiza Santos de Oliveira
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Gynecology ,medicine.medical_specialty ,Incontinencia urinaria ,business.industry ,medicine ,Case-control study ,Ethnic group ,Urinary incontinence ,General Medicine ,medicine.symptom ,business - Abstract
OBJETIVO: Estimar a ancestralidade genômica e sua a associação com a etnia autodeclarada em amostras de mulheres com diagnóstico de incontinência urinária (IU). METODOLOGIA: Participaram 145 mulheres, sendo 52 casos diagnosticados pela avaliação urodinâmica e 93 controles, com idade entre 45 e 60 anos. Foram utilizados seis marcadores de ancestralidade genômica (AIMs) (RB2300, LPL, AT3-I/D, Sb19.3 e APO) com valores de diferencial de frequência δ > 40% entre africanos e europeus ou ameríndios. As frequências alélicas foram analisadas pelo programa GENEPOP e as proporções de ancestralidade genômica através do programa ADMIX 3. RESULTADOS: A prevalência da etnia autodeclarada parda (69,2%) não representou um fator de risco para IU (p = 0,446) e OR = 0,446 (0,322-1,647). Porém a estimativa de ancestralidade genômica avaliada por AIMs revelou maior contribuição da ancestralidade europeia (66% e 68%), seguida da africana (24% e 22%) e ameríndia (10%), entre as amostras casos e controles. A análise da etnia autodeclarada comparada com a ancestralidade genômica mostrou discordância, 20% das mulheres com IU se declararam brancas, já 80% pardas e pretas, porém a estimativa de ancestralidade genômica demonstrou que as contribuições europeia, africana e ameríndia foram de 66%, 24% e 34%, respectivamente. CONCLUSÃO: A diferença encontrada entre a ancestralidade genômica obtida utilizando os AIMs e a verificada pela etnia autodeclarada indicam a importância de avaliar o grau de mistura étnica em amostras miscigenadas, a fim de evitar vieses de associação à determinada doença, pois as amostras casos e controles podem diferir significativamente em relação à ancestralidade genômica.
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- 2021
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47. Efficacy of hydroxychloroquine in the prevention of thromboembolic events: A systematic review and meta-analysis
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Daniel Fraga de Rezende, Rayssa Valandro Garcia, Mittermayer Barreto Santiago, Fernando Luiz Barros Edington, Sandra Rocha Gadelha Mello, and Luis Fernando Simões dos Santos
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medicine.medical_specialty ,Rheumatology ,business.industry ,Meta-analysis ,medicine ,Humans ,Lupus Erythematosus, Systemic ,Chloroquine ,Hydroxychloroquine ,Intensive care medicine ,business ,medicine.drug - Abstract
Objective To estimate the risk ratio (RR) of thromboembolic events in chloroquine and hydroxychloroquine users compared to non-users. Methods We systematically reviewed randomized controlled trials (RCTs), using MEDLINE and EMBASE databases from inception to the present, reporting thromboembolic events in chloroquine and hydroxychloroquine users compared to non-users. Four authors independently screened all the records obtained through our search strategy and later revised the selected full-text articles for eligibility, according to our inclusion criteria. The same four authors independently extracted relevant data through a customized data collection form while two other authors assessed the quality of the included RCTs using the Cochrane risk-of-bias tool (Version 2.0). All the disagreements were resolved through discussions among the authors. We calculated the risk ratio (RR) and its respective standard error of developing thromboembolic events in hydroxychloroquine users and non-users for each individual study and pooled the results using a random effects model meta-analysis. We assessed Heterogeneity using the Tau2 and I2, and publication bias using funnel plotting and Egger’s regression. The protocol for this systematic review is registered at the PROSPERO database (CRD42021247902). Results Thirteen RCTs met our eligibility criteria and were included in our analysis (2663 patients). We found that hydroxychloroquine—no study on chloroquine was found—reduced the risk of thromboembolic events by 49% (RR 0.51[IC 95% 0.31–0.84]) with a medium heterogeneity (I2 = 67% and T2 = 0.4948). We did find some asymmetry in the inspection of the funnel plot, which was ruled out through an Egger’s regression ( p-value = 0.1025). Conclusion Our data reinforce the idea that hydroxychloroquine reduces the risk of thromboembolic events.
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- 2021
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48. Clinical, epidemiological aspects, and trends of Hepatitis B in Brazil from 2007 to 2018
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Pinto, Cathianne Sacramento, primary, Costa, Galileu Barbosa, additional, Allaman, Ivan Bezerra, additional, and Gadelha, Sandra Rocha, additional
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- 2021
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49. Evaluación de los resultados de la influencia educativa en la formación de los futuros profesionales de la contaduría y de la administración
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Sandra Rocha Arias and Carmen Nolasco Gutiérrez
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Education (General) ,L7-991 ,Theory and practice of education ,LB5-3640 - Abstract
Ver PDF
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- 1995
50. First genome sequencing of SARS-CoV-2 recovered from an infected cat and its owner in Latin America
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Danilo J.P.G. Rocha, João Paulo Pereira de Almeida, Sandra Rocha Gadelha, Luis G.C. Pacheco, Mylene de Melo Silva, Renata Santiago Alberto Carlos, Emília Maria Medeiros de Andrade Belitardo, Bianca Mendes Maciel, Hllytchaikra Ferraz Fehlberg, Eric R.G.R. Aguiar, Ana Paula Melo Mariano, and George Rêgo Albuquerque
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Male ,Feline coronavirus ,Feline immunodeficiency virus ,040301 veterinary sciences ,viruses ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,cat ,next‐generation sequencing ,Disease ,Immunodeficiency Virus, Feline ,Cat Diseases ,medicine.disease_cause ,Feline leukemia virus ,Genome ,SARS‐CoV‐2 ,DNA sequencing ,0403 veterinary science ,03 medical and health sciences ,medicine ,Animals ,Humans ,030304 developmental biology ,0303 health sciences ,General Veterinary ,General Immunology and Microbiology ,biology ,SARS-CoV-2 ,Leukemia Virus, Feline ,COVID-19 ,virus diseases ,04 agricultural and veterinary sciences ,General Medicine ,biology.organism_classification ,Virology ,Sequence identity ,Mild symptoms ,Latin America ,Rapid Communications ,Cats ,Feline leukaemia virus ,Rapid Communication ,Brazil - Abstract
An 11‐year‐old male mixed‐breed cat, with exclusively indoor life, presented 3 cough episodes after the owners tested positive by RT‐PCR for SARS‐CoV‐2. The house is inhabited by 5 people (3 adults and 2 children), and 2 of the adults have shown mild symptoms associated with throat discomfort. The cat was vaccinated, had no history of any previous disease, and tested negative for feline coronavirus (FCoV), feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV). Rectal sample collected from the cat was positive for SARS‐CoV‐2 by RT‐PCR. Viral genome sequences recovered from human and cat samples showed an average 99.4% sequence identity. This is the first report of genome sequences of SARS‐CoV‐2 recovered from a cat and its owner in Latin America.
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- 2020
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