RESUMO
AIMS: Telemedicine between health care providers could be useful for improving the access to hepatology consultations, which is challenging in some regions. The primary objective of this study was to estimate the proportion of consultations that were resolved through a telemedicine program. Additionally, we evaluated patient satisfaction with this strategy. METHODS: Consecutive telemedicine consultations made by non-hepatologist health care providers from different regions of Argentina to a specialty hepatology team were included. Participants and hepatologists used e-mail, teleconference systems, WhatsApp, or telephone to interact, depending on their preferences. Consultations were considered to be resolved through telemedicine when a diagnosis and an adequate follow-up were achieved without the need to refer the patient to a hepatologist or other specialist. Patient satisfaction with telemedicine was evaluated using the Patient Satisfaction Questionnaire Short Form and Telemedicine Satisfaction Questionnaire. RESULTS: A total of 200 telemedicine consultations made by 24 physicians from 10 different provinces of Argentina were evaluated, of which 145 (73%; 95% CI: 66%-79%) were resolved through telemedicine. Practitioners specialities were as follows: family physicians, internists, gastroenterologists, infectious diseases, and obstetrics. The most frequent final diagnoses for those patients whose consultation was resolved through telemedicine were non-alcoholic fatty liver disease, viral hepatitis, and benign hepatic lesions. A high degree of patient satisfaction with telemedicine was observed in both questionnaires. CONCLUSIONS: Our results show the effectiveness of telemedicine in hepatology, with high resolution rate of consultations and rapid access to experts' assessment. Additionally, a high degree of patient satisfaction was observed using prevalidated questionnaires.
RESUMO
BACKGROUND: Yellow fever (YF) is a severe, infectious, but non-communicable arboviral hemorrhagic disease. In the last decades, yellow fever virus (YFV) infections have been prevalent in endemic areas in Brazil, affecting human and non-human primate (NHP) populations. Monitoring of NHP infection started in 1999, and reports of epizootic diseases are considered important indicators of viral transmission, particularly in relation to the sylvatic cycle. This study presents the monitoring of YFV by real-time RT-PCR and the epidemiological findings related to the deaths of NHPs in the south-eastern states and in the north-eastern state of Bahia, during the outbreak of YF in Brazil during 2017 and 2018. METHODS: A total of 4198 samples from 2099 NHPs from south-eastern and north-eastern Brazilian states were analyzed by real-time reverse transcription polymerase chain reaction (rtRT-PCR). RESULTS: A total of 4198 samples from 2099 NHPs from south-eastern and north-eastern Brazilian states were collected between 2017 and 2018. The samples were subjected to molecular diagnostics for YFV detection using real-time reverse transcription polymerase chain reaction (rtRT-PCR) techniques. Epizootics were coincident with human YF cases. Furthermore, our results showed that the YF frequency was higher among marmosets (Callithrix sp.) than in previous reports. Viremia in species of the genus Alouatta and Callithrix differed greatly. DISCUSSION: Our results indicate a need for further investigation of the role of Callithrix spp. in the transmission cycles of YFV in Brazil. In particular, YFV transmission was observed in a region where viral circulation has not been recorded for decades and thus vaccination has not been previously recommended. CONCLUSIONS: This highlights the need to straighten epizootic surveillance and evaluate the extent of vaccination programmes in Brazil in previously considered "YFV-free" areas of the country.
Assuntos
Doenças dos Primatas/epidemiologia , Febre Amarela/veterinária , Alouatta/virologia , Animais , Brasil/epidemiologia , Callithrix/virologia , Surtos de Doenças , Humanos , Doenças dos Primatas/transmissão , Doenças dos Primatas/virologia , Febre Amarela/epidemiologia , Febre Amarela/virologia , Zoonoses/epidemiologia , Zoonoses/virologiaRESUMO
Brazil, which is hyperendemic for dengue virus (DENV), has had recent Zika (ZIKV) and (CHIKV) Chikungunya virus outbreaks. Since March 2016, CHIKV is the arbovirus infection most frequently diagnosed in Rio de Janeiro. In the analysis of 1835 syndromic patients, screened by real time RT-PCR, 56.4% of the cases were attributed to CHIKV, 29.6% to ZIKV, and 14.1% to DENV-4. Sequence analyses of CHIKV from sixteen samples revealed that the East-Central-South-African (ECSA) genotype of CHIKV has been circulating in Brazil since 2013 [95% bayesian credible interval (BCI): 03/2012-10/2013], almost a year before it was detected by arbovirus surveillance program. Brazilian cases are related to Central African Republic sequences from 1980's. To the best of our knowledge, given the available sequence published here and elsewhere, the ECSA genotype was likely introduced to Rio de Janeiro early on 2014 (02/2014; BCI: 07/2013-08/2014) through a single event, after primary circulation in the Bahia state at the Northestern Brazil in the previous year. The observation that the ECSA genotype of CHIKV was circulating undetected underscores the need for improvements in molecular methods for viral surveillance.
Assuntos
Febre de Chikungunya/diagnóstico , Vírus Chikungunya/genética , Teorema de Bayes , Brasil/epidemiologia , Febre de Chikungunya/epidemiologia , Febre de Chikungunya/virologia , Vírus Chikungunya/classificação , Vírus Chikungunya/isolamento & purificação , Genótipo , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Filogenia , RNA Viral/química , RNA Viral/metabolismo , Análise de Sequência de RNARESUMO
The current yellow fever outbreak in Brazil prompted widespread yellow fever virus (YFV) vaccination campaigns, imposing a responsibility to distinguish between vaccine- and wild-type YFV-associated disease. We developed novel multiplex real-time reverse transcription PCRs that differentiate between vaccine and American wild-type YFV. We validated these highly specific and sensitive assays in an outbreak setting.
Assuntos
Reação em Cadeia da Polimerase em Tempo Real/métodos , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos , Vacina contra Febre Amarela/isolamento & purificação , Febre Amarela/virologia , Vírus da Febre Amarela/isolamento & purificação , Brasil/epidemiologia , Surtos de Doenças , Humanos , Especificidade da Espécie , Febre Amarela/epidemiologiaRESUMO
Benthic cnidarians are colonial marine animals that host a rich population of associated and symbiotic microorganisms. In a recent paper we described for the first time the isolation of amphidinolide P (1) from the Brazilian octocoral Stragulum bicolor. Amphidinolides and similar compounds had been previously reported only from dinoflagellates of the genus Amphidinium; thus the presence of 1 in the invertebrate opens intriguing questions on the role and occurrence of these molecules in marine ecosystems. Here we report the identification of four further amphidinolides from the same soft coral, including the known amphidinolide T1 (2) and the new analogues here named amphidinolides C4 (3), B8 (4), and B9 (5). The chemical structures have been elucidated mainly by extensive study of spectroscopic data. Cytotoxic activities of 3 and 4 were evaluated against the colon adenocarcinoma cell line HCT-116.
Assuntos
Antozoários/química , Antineoplásicos/isolamento & purificação , Dinoflagellida/química , Macrolídeos/isolamento & purificação , Animais , Antineoplásicos/química , Antineoplásicos/farmacologia , Brasil , Ensaios de Seleção de Medicamentos Antitumorais , Células HCT116 , Humanos , Macrolídeos/química , Estrutura Molecular , Ressonância Magnética Nuclear BiomolecularRESUMO
Abstract Dinoflagellates are an important source of unique bioactive secondary metabolites. Symbiotic species, commonly named zooxanthellae, transfer most of their photosynthetically fixed carbon to their host. The mutualistic relationship provides the organic metabolites used for energy production but there are very few reports of the role of the dinoflagellates in the production of secondary metabolites in the symbiotic association. Corals and other related cnidarians are the most well-known animals containing symbiotic dinoflagellates. In the present paper we describe the isolation of amphidinolide P (1) from the octocoral Stragulum bicolor and its prey, the nudibranch Marionia limceana, collected off the coasts of Fortaleza (Ceará, Brazil). The coral extracts also contained 3-O-methyl derivative (2) of amphidinolide P, together with minor compounds still under investigation. Amphidinolides have been so far reported only in laboratory cultures of Amphidinium sp., thus compounds 1 and 2 represents the first identification of these polyketides in invertebrates. The finding proves the possibility to isolate amphidinolides from a natural symbiosis, enabling further biological and biotechnological studies.
RESUMO
A fungal strain of Aspergillus sp. (BRF 030) was isolated from the sediments collected in the northeast coast of Brazil, and the cytotoxic activity of its secondary metabolites was investigated against HCT-116 tumour cell line. The cytotoxicity-guided fractionation of the extracts from this fungus cultured in potato-dextrose-sea water for 14 days at room temperature yielded the hetero-spirocyclic γ-lactams pseurotin A (1), pseurotin D (2) and pseurotin FD-838 (7), the alkaloids fumitremorgin C (5), 12,13-dihydroxy fumitremorgin C (6), methylsulochrin (4) and bis(dethio)bis(methylthio)gliotoxin (3). Among them, fumitremorgin C (5) and 12,13-dihydroxy fumitremorgin C (6) were the most active. The cytotoxic activities of the extracts from Aspergillus sp. grown from 7 to 28 days were investigated, and they were associated with the kinetic production of the compounds. The most active extracts (14 and 21 days) were those with the highest relative concentrations of the compounds fumitremorgin C (5) and 12,13-dihydroxy fumitremorgin C (6).
Assuntos
Antineoplásicos/química , Aspergillus/química , Antineoplásicos/isolamento & purificação , Aspergillus/isolamento & purificação , Brasil , Linhagem Celular Tumoral/efeitos dos fármacos , Sedimentos Geológicos/microbiologia , Humanos , Indóis/química , Indóis/isolamento & purificação , Estrutura Molecular , Água do Mar/microbiologiaRESUMO
The aim of this work was to obtain the best possible estimate of the relevance of bovine tuberculosis (BTB) in humans in Argentina, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, Peru, Uruguay and Venezuela. Sources of information were a questionnaire filled by the participant laboratories, and a search of published literature (1970-2007). Only four of these countries reported bacteriologically confirmed cases of BTB in humans. Most of these were diagnosed in Argentina, where the mean percentage of Mycobacterium bovis cases in relation to those due to Mycobacterium tuberculosis (2000-2006) ranged from 0.34% to 1.0%, according to the region. A slowly decreasing trend was observed in non HIV as well as in HIV/AIDS patients in Buenos Aires. In most of these countries, the low coverage of culture methods, especially of those including pyruvate-containing media, appropriate to isolate M. bovis, contributes to an underestimate of the problem. It was confirmed that BTB in humans exists, even though its relevance seems to be low. Milk pasteurization, sanitary controls to dairy products, and meat inspection at slaughterhouses contribute to the protection of human health. However, occupational aerogenous exposure to TB cattle and their carcasses remains a source of infection in the region.
Assuntos
Mycobacterium bovis , Tuberculose Bovina/epidemiologia , Zoonoses/epidemiologia , Adulto , Animais , Bovinos , Criança , Feminino , Humanos , América Latina/epidemiologia , Masculino , Carne/microbiologia , Leite/microbiologia , Saúde Pública , Tuberculose Bovina/microbiologia , Tuberculose Bovina/prevenção & controleRESUMO
BACKGROUND: Calcitriol deficit has been described in patients with acute lymphoblast leukemia (ALL). The aim of this randomized case-control trial is to investigate the effectiveness of calcitriol administration during the first year of treatment to protect bone mass. Sixteen children recently diagnosed with ALL, aged 1.7 to 11.5 years, average 5.5, completed the study. Anthropometrical measurements, food intake record, physical activity, and bone pain were registered. Dual energy x-ray absorptiometry was performed at the completion of remission induction chemotherapy (after 1 mo) to measure bone mineral density (BMD) at hip, lumbar spine and whole body, and total bone mineral content and 1 year after. Half of them were randomly assigned to receive calcitriol during 1 year. STATISTICAL: Kruskal-Wallis, Wilcoxon, Mann-Whitney, and Spearman. RESULTS: Both groups had similar anthropometric measurements and bone densitometric variables increments. Spine BMD significantly increased in calcitriol supplemented children with lower baseline BMD (r=-0.78 and P<0.05). CONCLUSIONS: One-year calcitriol administered to recently diagnosed ALL children did not show impact on bone mass. Greater increment in lumbar spine bone mass was observed in patients who received calcitriol and had lower baseline BMD.
Assuntos
Conservadores da Densidade Óssea/administração & dosagem , Densidade Óssea/efeitos dos fármacos , Calcitriol/administração & dosagem , Calcitriol/deficiência , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Deficiência de Vitamina D/tratamento farmacológico , Absorciometria de Fóton , Criança , Pré-Escolar , Ingestão de Alimentos/efeitos dos fármacos , Feminino , Seguimentos , Quadril/diagnóstico por imagem , Humanos , Lactente , Vértebras Lombares/diagnóstico por imagem , Masculino , Atividade Motora/efeitos dos fármacos , Dor/tratamento farmacológico , Dor/etiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/complicações , Leucemia-Linfoma Linfoblástico de Células Precursoras/diagnóstico por imagem , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/diagnóstico por imagemRESUMO
La Enfermedad de Bowen Perianal (EBP) es una entidad rara de curso crónico, poco agresiva, pero con un riesgo real aunque bajo de desarrollar cáncer escamoso invasor. Afecta predominante mujeres mayores de 50 años. Con mucha frecuencia se asocia con infección por papiloma virus en región anal y genital, lo que podría ser el factor de riesgo para el desarrollo de la neoplasia maligna. El tratamiento actualmente aceptado es la resección local amplia (RLA) con o sin injerto de piel
Assuntos
Doença de BowenRESUMO
This study compares genetic polymorphisms at the D1S80 and HLA-DQA1 loci in three Mexican Mestizo populations from three large states (Nuevo León, Jalisco, and the Federal District). Allele frequency distributions are relatively homogenous in the three samples; only the Federal District population shows minor differences of the HLA-DQA1 allele frequencies compared with the other two. In terms of genetic composition, these Mestizo populations show evidence of admixture with predominantly Spanish-European (50-60%) and Amerindian (37-49%) contributions; the African contribution (1-3%) is minor. Together with the observation that in Nuevo León, the admixture estimates based on D1S80 and HLA-DQA1, are virtually the same as those reported earlier from blood group loci, suggests that DNA markers, such as D1S80 and HLA-DQA1 are useful for examining genetic homogeneity/heterogeneity across Mestizo populations of Mexico. The inverse relationship of the proportion of gene diversity due to population differences (Gst) to within population gene diversity (Hs) is also consistent with theoretical predictions, supporting the use of these markers for population genetics studies.
Assuntos
DNA/genética , Etnicidade/genética , Frequência do Gene , Antígenos HLA-DQ/genética , Polimorfismo Genético , Cadeias alfa de HLA-DQ , Humanos , MéxicoRESUMO
Se realizó seguimiento a niños que recibieron hidratación oral en el Hospital Central "Antonio María Pineda" de Barquisimeto, escogiendo para ello una muestra de 100 pacientes según el método "probabilístico sistemático". Se encontró que un 16 por ciento de los pacientes hidratados oralmente reingresaron por agravamiento de la desidratación, siendo 31,25 por ciento deshidratación leve, 56,25 por ciento moderada y 12,5 por ciento grave. El tiempo de hidratación oral de la muestra estudida fue de 24 horas. Por otra parte, el tiempo transcurrido una vez dado de alta para el reingreso de los pacientes, fue del 50 por ciento hasta 24 horas, 12,4 por ciento entre 24-48 horas y 37.5 por ciento después de 48 horas. Así mismo, de los pacientes que reingresaron (16), el 43,75 por ciento presentó diarrea y vómitos como causa del mismo; todos los pacientes de la muestra estudiada fueron de la clase marginal, según la clasificación de Graffar modificado. Se recomienda la difusión y promoción de esta terapia de rehidratación oral por su eficiencia y bajo costo y a la vez, aprovechar la oportunidad para realizar educación sanitaria