Non-invasive hepatic fat quantification: Can multi-echo Dixon help?

Objective: To evaluate the diagnostic accuracy of multi-echo Dixon magnetic resonance imaging (MRI) in hepatic fat quantification, in comparison with that of magnetic resonance spectroscopy (MRS), on 3.0-T MRI. Materials and Methods: Fifty-five adults with no known liver disease underwent MRI in a 3.0-T scanner for determination of the hepatic fat fraction, with two techniques: multi-echo Dixon, in a manually drawn region of interest (ROI) and in the entire liver parenchyma (automated segmentation); and MRS. The diagnostic accuracy and cutoff value for multi-echo Dixon were determined, with MRS being used as the reference standard. Results: The mean fat fraction obtained by multi-echo Dixon in the manually drawn ROI and in the entire liver was 5.2 ± 5.8% and 6.6 ± 5.2%, respectively, whereas the mean hepatic fat fraction obtained by MRS was 5.7 ± 6.4%. A very strong positive correlation and good agreement were observed between MRS and multi-echo Dixon, for the ROI (r = 0.988, r2 = 0.978, p < 0.001) and for the entire liver parenchyma (r = 0.960, r2 = 0.922, p < 0.001). A moderate positive correlation was observed between the hepatic fat fraction and body mass index of the participants, regardless of the fat estimation technique employed. Conclusion: For hepatic fat quantification, multi-echo Dixon MRI demonstrated a very strong positive correlation and good agreement with MRS (often considered the gold-standard noninvasive technique). Because multi-echo Dixon MRI is more readily available than is MRS, it can be used as a rapid tool for hepatic fat quantification, especially when the hepatic fat distribution is not homogeneous.

Objetivo: Avaliar a acurácia diagnóstica da técnica multieco Dixon na quantificação da gordura hepática em comparação com a espectroscopia por ressonância magnética (ERM), em exames de RM 3.0-T. Materiais e Métodos: Cinquenta e cinco participantes adultos sem doença hepática conhecida foram submetidos a RM 3.0-T para determinação da fração de gordura hepática, usando duas técnicas: multieco Dixon (em ROI desenhada manualmente e em segmentação automatizada para todo o parênquima hepático) e ERM. A precisão diagnóstica e o valor de corte para multieco Dixon foram determinados usando a ERM como padrão de referência. Resultados: A fração de gordura média usando multieco Dixon na ROI desenhada manualmente e na segmentação automatizada do fígado inteiro foi 5,2 ± 5,8% e 6,6 ± 5,2%, respectivamente. A fração de gordura hepática média usando ERM foi 5,7 ± 6,4%. Correlação positiva muito alta e forte concordância foram observadas entre ERM e multieco Dixon, tanto para ROI (r = 0,988, r2 = 0,978, p < 0,001) quanto para todo o parênquima hepático (r = 0,960, r2 = 0,922, p < 0,001). Correlação positiva moderada foi observada entre a fração de gordura hepática e o índice de massa corpórea dos participantes usando ambas as técnicas de estimativa de gordura. Conclusão: Multieco Dixon demonstrou correlação positiva muito alta e concordância com a ERM (muitas vezes considerada padrão de referência não invasivo) para quantificação de gordura hepática. Uma vez que o multieco Dixon está mais prontamente disponível do que a ERM, pode ser usado como uma ferramenta rápida para a quantificação da gordura hepática, especialmente na distribuição não homogênea da gordura.

Non-invasive hepatic fat quantification: Can multi-echo Dixon help? / Quantificação da gordura hepática não invasiva: multieco Dixon pode ajudar?

Abstract Objective: To evaluate the diagnostic accuracy of multi-echo Dixon magnetic resonance imaging (MRI) in hepatic fat quantification, in comparison with that of magnetic resonance spectroscopy (MRS), on 3.0-T MRI. Materials and Methods: Fifty-five adults with no known liver disease underwent MRI in a 3.0-T scanner for determination of the hepatic fat fraction, with two techniques: multi-echo Dixon, in a manually drawn region of interest (ROI) and in the entire liver parenchyma (automated segmentation); and MRS. The diagnostic accuracy and cutoff value for multi-echo Dixon were determined, with MRS being used as the reference standard. Results: The mean fat fraction obtained by multi-echo Dixon in the manually drawn ROI and in the entire liver was 5.2 ± 5.8% and 6.6 ± 5.2%, respectively, whereas the mean hepatic fat fraction obtained by MRS was 5.7 ± 6.4%. A very strong positive correlation and good agreement were observed between MRS and multi-echo Dixon, for the ROI (r = 0.988, r2 = 0.978, p < 0.001) and for the entire liver parenchyma (r = 0.960, r2 = 0.922, p < 0.001). A moderate positive correlation was observed between the hepatic fat fraction and body mass index of the participants, regardless of the fat estimation technique employed. Conclusion: For hepatic fat quantification, multi-echo Dixon MRI demonstrated a very strong positive correlation and good agreement with MRS (often considered the gold-standard noninvasive technique). Because multi-echo Dixon MRI is more readily available than is MRS, it can be used as a rapid tool for hepatic fat quantification, especially when the hepatic fat distribution is not homogeneous.

Resumo Objetivo: Avaliar a acurácia diagnóstica da técnica multieco Dixon na quantificação da gordura hepática em comparação com a espectroscopia por ressonância magnética (ERM), em exames de RM 3.0-T. Materiais e Métodos: Cinquenta e cinco participantes adultos sem doença hepática conhecida foram submetidos a RM 3.0-T para determinação da fração de gordura hepática, usando duas técnicas: multieco Dixon (em ROI desenhada manualmente e em segmentação automatizada para todo o parênquima hepático) e ERM. A precisão diagnóstica e o valor de corte para multieco Dixon foram determinados usando a ERM como padrão de referência. Resultados: A fração de gordura média usando multieco Dixon na ROI desenhada manualmente e na segmentação automatizada do fígado inteiro foi 5,2 ± 5,8% e 6,6 ± 5,2%, respectivamente. A fração de gordura hepática média usando ERM foi 5,7 ± 6,4%. Correlação positiva muito alta e forte concordância foram observadas entre ERM e multieco Dixon, tanto para ROI (r = 0,988, r2 = 0,978, p < 0,001) quanto para todo o parênquima hepático (r = 0,960, r2 = 0,922, p < 0,001). Correlação positiva moderada foi observada entre a fração de gordura hepática e o índice de massa corpórea dos participantes usando ambas as técnicas de estimativa de gordura. Conclusão: Multieco Dixon demonstrou correlação positiva muito alta e concordância com a ERM (muitas vezes considerada padrão de referência não invasivo) para quantificação de gordura hepática. Uma vez que o multieco Dixon está mais prontamente disponível do que a ERM, pode ser usado como uma ferramenta rápida para a quantificação da gordura hepática, especialmente na distribuição não homogênea da gordura.

Chagas Disease in Pregnant Women from Endemic Regions Attending the Hospital General de Mexico, Mexico City.

Trypanosoma cruzi infection leads to Chagas disease (CD), a neglected tropical infection of significant public health importance in South and Central America and other, non-endemic, countries. Pregnant women and their children are of particular importance to screen as T. cruzi can be transmitted vertically. The objective of this study was to screen for T. cruzi infection among pregnant women from endemic areas seen at the Hospital General de Mexico for prenatal care, so that they and their children may be quickly connected to CD treatment. Pregnant women were recruited through the hospital prenatal clinic and screened for T. cruzi infection using a series of serological and molecular tests. Of 150 screened patients, mean age 26.8 (SD 6.4), 30 (20.0%) were positive by at least one diagnostic test. Of these, only nine (6%) were positive as determined by PCR. Diagnosis of chronic CD is difficult in endemic places like Mexico due to the limitations of current commercially available diagnostic tests. Further evaluation of diagnostic performance of various assays could improve current CD diagnostic algorithms and proper care management in these regions. Genetic variability in the parasite may also play a role in the differing assay performances seen in this study, and this may be a valuable avenue of further research.

Unusual clinical phenotype of Stargardt disease / Fenótipo clínico incomum da doença de Stargardt

ABSTRACT Mutations in the ABCA4 gene are a common cause of Stargardt disease; however, other retinal phenotypes have also been associated with mutations in this gene. We describe an observational case report of an unusual clinical phenotype of Stargardt disease. The ophthalmological examination included best corrected visual acuity, color and autofluorescence photography, fluorescein angiography, optical coherence tomography, and electrophysiology tests. Targeted next-generation sequencing of 99 genes associated with inherited retinal dystrophies was performed in the index patient. A 48-year-old woman presented with a best corrected visual acuity of 20/25 and 20/20. Fundoscopy revealed perifoveal yellow flecked-like lesions. Fluorescein angiography and fundus autofluorescence findings were consistent with pattern dystrophy. Pattern electroretinogram demonstrated bilateral decrease of p50 values. Genetic testing identified two heterozygous missense mutations, c.428C>T, p.(Pro143Leu) and c.3113C>T, p.(Ala.1038Val), in the ABCA4 gene. Based on our results, we believe that these particular mutations in the ABCA4 gene could be associated with a specific disease phenotype characterized by funduscopic appearance similar to pattern dystrophy. A detailed characterization of the retinal phenotype in patients carrying specific mutations in ABCA4 is crucial to understand disease expression and ensure optimal clinical care for patients with inherited retinal dystrophies.

RESUMO Mutações no gene ABCA4 são causa comum da doença de Stargardt, mas outros fenótipos da retina também foram associados a mutações nesse gene. Apresentamos um relato de caso observacional de um fenótipo clínico incomum da doença de Stargardt. O exame oftalmológico incluiu a acuidade visual com melhor correção, fotografia em cores e com autofluorescência, angiofluoresceinografia, tomografia de coerência óptica e testes de eletrofisiologia. Na paciente em questão, realizou-se o sequenciamento de próxima geração de 99 genes associados a distrofias retinais hereditárias. Tratava-se de uma mulher de 48 anos com melhor acuidade visual corrigida de 20/25 e 20/20. A fundoscopia revelou lesões puntiformes amarelas perifoveais. Os resultados da angiofluoresceinografia e da autofluorescência do fundo de olho foram consistentes com distrofia em padrão. A eletrorretinografia por padrões mostrou diminuição bilateral dos valores de p50. Os testes genéticos revelaram duas mutações missense heterozigóticas, c.428C>T, p. (Pro143Leu) e c.3113C>T, p. (Ala.1038Val), no gene ABCA4. Nossos resultados nos fazem pensar que essas mutações específicas em ABCA4 talvez possam estar associadas a um fenótipo específico da doença, caracterizado por uma aparência fundoscópica semelhante à da distrofia em padrão. Uma caracterização detalhada do fenótipo da retina em pacientes portadores de mutações específicas em ABCA4 é crucial para compreender a expressão da doença e para garantir o tratamento clínico ideal para pacientes com distrofias retinais hereditárias.

Evaluation of UMELISA CHAGAS™ with the incorporation of new monomeric and chimeric peptides representative of different regions of Trypanosoma cruzi / [Evaluación del UMELISA CHAGAS® con la incorporación de nuevos péptidos monoméricos y quiméricos representativos de diferentes regiones de Trypanosoma cruzi].

Introduction: Most people with Chagas disease develop specific antibodies against Trypanosoma cruzi. In early infection, IgM antibodies against T. cruzi are produced and later replaced for IgG antibodies during the course of the disease. The first symptoms of the infection may be very mild and atypical, which is why the disease is often not detected in the acute phase. Objectives: To evaluate the clinical and analytical sensitivity, and specificity, accuracy, and efficacy of UMELISA CHAGAS™ with the addition of new synthetic peptides in the solid phase representative of the shed acute phase antigen protein (SAPA) and the trypomastigote surface antigen (TSA). Materials and methods: We evaluated a mixed anti-T. cruzi titer performance panel and a Chagas seroconversion one, as well as positive and negative serum samples from endemic areas of the disease and positive samples for other diseases that may interfere with the assay. The Bioelisa CHAGAS assay, Chaga test recombinant ELISA v.4.0, Chagatest HAI, and SD BIOLINE CHAGAS Ab Rapid were used as reference tests. Results: The sensitivity of the assay was 97.73% (95% CI: 96,23-99,24) and the clinical specificity, 99.33% (95% CI: 98,88-99,78) while the efficacy and the accuracy were 98.96%. Conclusions: Our results show that the new solid phase of UMELISA CHAGAS® can be used for immunodiagnostic, blood certification, and epidemiological surveillance in endemic and non-endemic countries with high-risk populations.

Introducción. La mayoría de las personas con enfermedad de Chagas desarrolla anticuerpos específicos contra Trypanosoma cruzi. En la infección temprana se producen anticuerpos IgM contra T. cruzi que son reemplazados por IgG durante el curso de la enfermedad. Los primeros síntomas de la enfermedad suelen ser muy leves y atípicos, por lo que a menudo no se detecta en la fase aguda. Objetivos. Evaluar la sensibilidad y la especificidad clínica y analítica, la precisión y la eficacia del UMELISA CHAGAS® con la incorporación de nuevos péptidos sintéticos en la fase sólida representativos de la proteína SAPA (Shed Acute Phase Antigen) y del antígeno TSA (Trypomastigote Surface Antigen). Materiales y métodos. Se evaluó un panel de desempeño de título mixto anti-T. cruzi y uno de seroconversión de Chagas, así como muestras de suero positivas y negativas provenientes de zonas endémicas de la enfermedad y muestras positivas de otras enfermedades que podían interferir con la prueba. Las pruebas Bioelisa CHAGAS, Chagatest ELISA recombinante v. 4.0, Chagatest HAI y SD BIOLINE CHAGAS Ab Rapid, se emplearon como referencia. Resultados. Los porcentajes de sensibilidad y especificidad clínica fueron de 97,73 % (IC95% 96,23-99,24) y 99,33 % (IC95% 98,88-99,78), respectivamente. Se obtuvo un 98,96 % de eficacia y una buena precisión. Conclusiones. Los resultados demuestran que la nueva fase sólida del UMELISA CHAGAS® puede utilizarse para el inmunodiagnóstico, la certificación de sangre y la vigilancia epidemiológica en países endémicos y no endémicos con población de alto riesgo.

Biotic Yield Losses in the Southern Amazon, Brazil: Making Use of Smartphone-Assisted Plant Disease Diagnosis Data.

Pathogens and animal pests (P&A) are a major threat to global food security as they directly affect the quantity and quality of food. The Southern Amazon, Brazil's largest domestic region for soybean, maize and cotton production, is particularly vulnerable to the outbreak of P&A due to its (sub)tropical climate and intensive farming systems. However, little is known about the spatial distribution of P&A and the related yield losses. Machine learning approaches for the automated recognition of plant diseases can help to overcome this research gap. The main objectives of this study are to (1) evaluate the performance of Convolutional Neural Networks (ConvNets) in classifying P&A, (2) map the spatial distribution of P&A in the Southern Amazon, and (3) quantify perceived yield and economic losses for the main soybean and maize P&A. The objectives were addressed by making use of data collected with the smartphone application Plantix. The core of the app's functioning is the automated recognition of plant diseases via ConvNets. Data on expected yield losses were gathered through a short survey included in an "expert" version of the application, which was distributed among agronomists. Between 2016 and 2020, Plantix users collected approximately 78,000 georeferenced P&A images in the Southern Amazon. The study results indicate a high performance of the trained ConvNets in classifying 420 different crop-disease combinations. Spatial distribution maps and expert-based yield loss estimates indicate that maize rust, bacterial stalk rot and the fall armyworm are among the most severe maize P&A, whereas soybean is mainly affected by P&A like anthracnose, downy mildew, frogeye leaf spot, stink bugs and brown spot. Perceived soybean and maize yield losses amount to 12 and 16%, respectively, resulting in annual yield losses of approximately 3.75 million tonnes for each crop and economic losses of US$2 billion for both crops together. The high level of accuracy of the trained ConvNets, when paired with widespread use from following a citizen-science approach, results in a data source that will shed new light on yield loss estimates, e.g., for the analysis of yield gaps and the development of measures to minimise them.

Fiebre y sus implicaciones en el diagnóstico del paciente neurológico, revisión narrativa de la literatura / Fever and Its Implications in the Diagnosis of the Neurological Patient: A Review / Febre e suas implicações no diagnostico do paciente neurológico, uma revisão narrativa da literatura

Introducción: La fiebre se considera uno de los primeros síntomas registrados en pacientes hospitalizados y se ha convertido en un importante marcador de enfermedad. La presente revisión buscó recopilar evidencia en torno a la fiebre y su importancia en los diferentes escenarios clínicos que se presentan en el paciente neurológico, ya que en los últimos años se ha logrado comprender mejor el papel que desempeña el sistema nervioso central dentro de la termorregulación. Metodología: Búsqueda de la literatura en bases de datos como Pubmed, OVID, Epistemonikos, SciELO y Google Scholar, durante los años 2009 al 2019 en español e inglés, sobre fiebre e implicaciones en pacientes neurológicos, usando palabras clave como fiebre, sensibilidad, especificidad, likelihood ratio, enfermedades del sistema nervio-so, neurología, encefalitis, neuritis y traumatismo del sistema nervioso. Resultados: Se encontraron 374 artículos, de los cuales 48 cumplieron con los criterios de inclusión. Se incluyeron libros de texto, como metaanálisis, revisiones sistemáticas, revisiones scoping, artículos de revisión y estudios ob-servacionales. Se analizaron y subdividieron en 8 apartados con temáticas en común para su estudio. Conclusiones: En etapas tempranas de eventos cerebro-vasculares isquémicos o hemorrágicos la fiebre se com-porta como una respuesta sistémica secundaria al daño de base, y es crucial corregirla tempranamente. Al mismo tiempo, en traumatismos del sistema nervioso central, la fiebre en las primeras 72 horas se identifica como un marcador de mal pronóstico

Introduction: Fever is considered one of the first symptoms registered in hospitalized patients, beco-ming an important marker of disease. The present review sought to collect evidence on fever and its importance in the different clinical scenarios that occur in neurological patients, since in recent years it has been possible to better understand the role of the central nervous system within the thermo-regulation. Methodology: A literature search was carried out in databases such as Pubmed, OVID, Epistemoni-kos, SciELO and Google Scholar during the years 2009 to 2019 in Spanish and English languages, on fever and implications in neurological patients, using keywords such as fever, sensitivity, specificity, likelihood ratio, diseases of the nervous system, neurology, encephalitis, neuritis and trauma of the nervous system. Results: A total of 374 articles were found, of which 48 articles met the inclusion criteria, for the construction of this review article. Textbooks, as well as meta-analyzes, systematic reviews, scoping reviews, and review articles were included. They were analyzed and subdivided into 8 sections with common themes for their study. Conclusions: In early stages of ischemic or hemorrhagic CVD, fever behaves as a systemic response secondary to the underlying injury, and it is crucial to correct it early. At the same time, in CNS trauma, fever in the first 72 hours is identified as a poor prognostic marker

Introdução: A febre é considerada um dos primeiros sintomas registrados em pacientes hospitaliza-dos e tornou-se um importante marcador de doença. A presente revisão procurou reunir evidencias em torno da febre e sua importância nos diferentes panoramas clínicos no paciente neurológico, uma vez que nos últimos anos foi possível compreender melhor o papel do sistema nervoso central no processo de termo regulação. Metodologia: Foi realizada uma pesquisa de literatura em bases de dados como Pubmed, OVID, Epis-temonikos, SciELO e Google Acadêmico, durante os anos 2009 a 2019 em espanhol e inglês, sobre febre e suas implicações em pacientes neurológicos, utilizando palavras-chave como febre, sensibili-dade, especificidade, likelihood ratio, doenças do sistema nervoso, neurologia, encefalite, neurite e trauma do sistema nervoso. Resultados: Foi encontrado um total de 374 artigos, dos quais 48 abrangiam os critérios de inclusão. Foram incluídos livros de texto, como meta-análises, revisões sistemáticas, revisões Scoping, artigos de revisão e estudos observacionais. Foram analisadas e subdivididas em 8 secções com assuntos comuns para seu estudo. Conclusões: Em fases iniciais de eventos cerebrovasculares isquêmicos ou hemorrágicos, a febre se comporta como uma resposta sistêmica secundária ao dano de base, e é crucial corrigi-la precoce-mente. Enquanto, em traumatismos do sistema nervoso central, a febre nas primeiras 72 horas é identificada como um marcador de mau prognóstico

Saliva Preparation Method Exploration for ATR-FTIR Spectroscopy: Towards Bio-fluid Based Disease Diagnosis.

Saliva has garnered a lot of interest as a non-invasive, easy to collect, and biochemical rich sample for attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) based disease diagnosis. Although a large number of studies have explored its potential, the preparation methods used differ greatly. For large scale clinical studies to aid translation into clinics, the collection/processing methodology needs to be standardized. Therefore, in this study, we explored different saliva collection (spitting, method A/cotton soaking, method B) and processing protocols (unprepared, TS; supernatant from the centrifugation, CS; and drying, C) to find which gives the best ATR-FTIR signals. Analysis showed highest proteins, carbohydrates, amino acids, and nucleic acid + proteins/lipids in BTS, BCS, ACS, and BC, respectively. Notably, only BC shows a 1377 cm-1 nucleic acid band that is also uniquely identified in multivariate analysis. We conclude that the collection-processing protocol should be based on a biochemical component that best gives a differential diagnosis.

Concentrations of acute-phase proteins and immunoglobulins in serum and synovial fluid in clinically healthy heifers and steers / Concentração de proteínas de fase aguda e de imunoglobulinas no soro e no líquido sinovial de bovinos clinicamente saudáveis

The aim of the study was to determine the concentration pattern of intra-articular acute phase proteins (APPs) and immunoglobulins in healthy crossbred cattle. Synovial fluid (SF) samples were collected from the radiocarpal joint of 25 heifers and 25 steers. Concentrations of APPs were measured by SDS-PAGE. The results were submitted to analysis of variance using the SAS statistical program, and means were compared by the Student-Newman-Keuls test (P<0.05). Thirty-seven proteins with molecular weights ranging from 7 to 37kDa were identified in SF of all animals. Eight were nominally identified with immunoglobulin A (IgA) and G (IgG), ceruloplasmin (Cp), transferrin (Tf), albumin (Ab), α1-antitripsin (AAT), α1-acid glycoprotein (AGP), and haptoglobin (Hp). The α1-antitripsin was only identified in the Sf of the heifers. The SF values of Cp, Hp, AGP and IgA were significantly higher in heifers than in steers. In sera, 34 proteins with molecular weights between 7 and 244kDa were identified in heifers and steers. Similar proteins were nominally identified in the sera, however the α1-antitrypsin was identified only in SF. The serum values Tf, AGP and IgG were significantly higher in heifers compared with steers. In conclusion, the physiological acute-phase proteins concentrations in synovial fluid of healthy ruminants can be useful in the interpretation of samples from animals with joint diseases. The SF electrophoretic profile of healthy ruminants differs depending on gender. Similar proteins were nominally identified in the sera, but only the SF of α1-antitrypsin.(AU)

O objetivo do estudo foi determinar o padrão de concentração de proteínas de fase aguda e de imunoglobulinas intra-articulares (APPs) em bovinos mestiços saudáveis. As amostras de fluido sinovial (SF) foram coletadas da articulação radiocárpica de 25 novilhas e 25 novilhos. As concentrações de APPs foram mensuradas por SDS-PAGE. Os resultados foram submetidos à análise de variância usando o programa estatístico SAS, e os meios foram comparados pelo teste Student-Newman-Keuls (P<0,05). Trinta e sete proteínas com pesos moleculares variando de 7 a 37kDa foram identificadas no SF de todos os animais. Oito foram nominalmente identificadas como imunoglobulina A (IgA) e G (IgG), ceruloplasmina (Cp), transferrina (Tf), albumina (Ab), a1-antitripsina (AAT), glicoproteína a1-ácido (AGP) e haptoglobina (Hp). A α1-antitripsina foi identificada apenas no SF das novilhas. Os valores de Cp, Hp, AGP e IgA no SF foram significativamente maiores em novilhas do que em novilhos. No soro, 34 proteínas com pesos moleculares entre 7 e 244kDa foram identificadas nas novilhas e novilhos. Proteínas similares foram identificadas nos soros, mas apenas o SF das novilhas apresentou a α1-antitripsina. Os valores séricos de Tf, AGP e IgG foram significativamente maiores em novilhas em relação aos novilhos. Conclui-se que a mensuração das concentrações das proteínas da fase aguda no líquido sinovial de animais saudáveis pode ser útil na avaliação de amostras oriundas de bovinos com afecções articulares. O perfil eletroforético do SF de ruminantes saudáveis difere em função do gênero e as diferenças devem ser levadas em consideração na interpretação dos achados.(AU)

Concentrations of acute-phase proteins and immunoglobulins in serum and synovial fluid in clinically healthy heifers and steers / Concentração de proteínas de fase aguda e de imunoglobulinas no soro e no líquido sinovial de bovinos clinicamente saudáveis

The aim of the study was to determine the concentration pattern of intra-articular acute phase proteins (APPs) and immunoglobulins in healthy crossbred cattle. Synovial fluid (SF) samples were collected from the radiocarpal joint of 25 heifers and 25 steers. Concentrations of APPs were measured by SDS-PAGE. The results were submitted to analysis of variance using the SAS statistical program, and means were compared by the Student-Newman-Keuls test (P<0.05). Thirty-seven proteins with molecular weights ranging from 7 to 37kDa were identified in SF of all animals. Eight were nominally identified with immunoglobulin A (IgA) and G (IgG), ceruloplasmin (Cp), transferrin (Tf), albumin (Ab), α1-antitripsin (AAT), α1-acid glycoprotein (AGP), and haptoglobin (Hp). The α1-antitripsin was only identified in the Sf of the heifers. The SF values of Cp, Hp, AGP and IgA were significantly higher in heifers than in steers. In sera, 34 proteins with molecular weights between 7 and 244kDa were identified in heifers and steers. Similar proteins were nominally identified in the sera, however the α1-antitrypsin was identified only in SF. The serum values Tf, AGP and IgG were significantly higher in heifers compared with steers. In conclusion, the physiological acute-phase proteins concentrations in synovial fluid of healthy ruminants can be useful in the interpretation of samples from animals with joint diseases. The SF electrophoretic profile of healthy ruminants differs depending on gender. Similar proteins were nominally identified in the sera, but only the SF of α1-antitrypsin.(AU)

O objetivo do estudo foi determinar o padrão de concentração de proteínas de fase aguda e de imunoglobulinas intra-articulares (APPs) em bovinos mestiços saudáveis. As amostras de fluido sinovial (SF) foram coletadas da articulação radiocárpica de 25 novilhas e 25 novilhos. As concentrações de APPs foram mensuradas por SDS-PAGE. Os resultados foram submetidos à análise de variância usando o programa estatístico SAS, e os meios foram comparados pelo teste Student-Newman-Keuls (P<0,05). Trinta e sete proteínas com pesos moleculares variando de 7 a 37kDa foram identificadas no SF de todos os animais. Oito foram nominalmente identificadas como imunoglobulina A (IgA) e G (IgG), ceruloplasmina (Cp), transferrina (Tf), albumina (Ab), a1-antitripsina (AAT), glicoproteína a1-ácido (AGP) e haptoglobina (Hp). A α1-antitripsina foi identificada apenas no SF das novilhas. Os valores de Cp, Hp, AGP e IgA no SF foram significativamente maiores em novilhas do que em novilhos. No soro, 34 proteínas com pesos moleculares entre 7 e 244kDa foram identificadas nas novilhas e novilhos. Proteínas similares foram identificadas nos soros, mas apenas o SF das novilhas apresentou a α1-antitripsina. Os valores séricos de Tf, AGP e IgG foram significativamente maiores em novilhas em relação aos novilhos. Conclui-se que a mensuração das concentrações das proteínas da fase aguda no líquido sinovial de animais saudáveis pode ser útil na avaliação de amostras oriundas de bovinos com afecções articulares. O perfil eletroforético do SF de ruminantes saudáveis difere em função do gênero e as diferenças devem ser levadas em consideração na interpretação dos achados.(AU)

Experiences of parents and/or caretakers of children with Hirschsprung's disease or anorectal malformations during follow-up after pediatric surgery / Vivencias de los padres o cuidadores de niños con enfermedad de Hirschsprung o con malformaciones anorrectales, bajo seguimiento después de la cirugía

Introduction: Hirschsprung's disease and anorectal malformations are pathologies that affect the pediatric population and compromise life from birth, making diagnosis and early treatment essential. The comorbidities they lead to in the long-term take parents and caretakers to situations that, without proper accompaniment, can generate serious complications in the child. Objective: To describe the meaning of the experiences of parents of children with Hirschsprung's disease or anorectal malformations who have had surgical treatment and are being followed-up. Materials and methods: This was a phenomenological qualitative research carried out through interviews with five parents of children with Hirschsprung's disease and five parents of children with anorectal malformations. Results: We found common experiences from which the following topics emerged: a) Difficult diagnosis, which involves the feelings and the impact generated by receiving this news; for health personnel it is not always a situation that is identified early; b) treatment: Social isolation due to hospitalizations and the presence of an ostomy, in addition to the channeling of resources for the child at the expense of those of the home; coping skills are required to achieve definitive surgical repair; and c) context: Health institutions may become barriers and health personnel must have more education in this regard; social support networks are necessary. Conclusion: The experiences reflected that diagnosis, treatment, and context generated great impact on the lives of parents and/or caretakers of children with these pathologies.

Introducción. La enfermedad de Hirschsprung y las malformaciones anorrectales son enfermedades que afectan a los niños y comprometen su vida desde el nacimiento, por lo que su diagnóstico y tratamiento temprano son esenciales. Las comorbilidades que implican a largo plazo llevan a los padres y cuidadores a situaciones que pueden generar graves complicaciones para el niño si no se cuenta con el acompañamiento adecuado. Objetivo. Describir y analizar las vivencias de los padres de niños con enfermedad de Hirschsprung o malformaciones anorrectales bajo seguimiento tras haber sido sometidos a cirugía. Materiales y métodos. Se hizo un estudio cualitativo con un enfoque fenomenológico mediante entrevistas a cinco padres de niños con enfermedad de Hirschsprung y a otros cinco de niños con malformaciones anorrectales. Resultados. Se encontraron experiencias comunes, de las cuales surgieron los siguientes temas: a) el diagnóstico difícil, debido a los sentimientos y al impacto generados por la noticia, situación que no siempre es detectada tempranamente por el personal de salud; b) el tratamiento, el cual provoca aislamiento social por las hospitalizaciones y la presencia de una ostomía, además de que los recursos se concentran en el niño en detrimento del hogar; se requiere capacidad de afrontamiento para lograr la reparación quirúrgica definitiva, y c) el contexto, ya que las instituciones de salud pueden convertirse en barreras; además, el personal de salud debe disponer de mayor educación al respecto y son necesarias las redes de apoyo social. Conclusión. Las vivencias reflejan que el diagnóstico, el tratamiento y el contexto generan un gran impacto en las vidas de los padres o cuidadores de niños con estas condiciones.

Vivencias de los padres o cuidadores de niños con enfermedad de Hirschsprung o con malformaciones anorrectales, bajo seguimiento después de la cirugía / Experiences of parents and/or caretakers of children with Hirschsprung's disease or anorectal malformations during follow-up after pediatric surgery

Resumen Introducción. La enfermedad de Hirschsprung y las malformaciones anorrectales son enfermedades que afectan a los niños y comprometen su vida desde el nacimiento, por lo que su diagnóstico y tratamiento temprano son esenciales. Las comorbilidades que implican a largo plazo llevan a los padres y cuidadores a situaciones que pueden generar graves complicaciones para el niño si no se cuenta con el acompañamiento adecuado. Objetivo. Describir y analizar las vivencias de los padres de niños con enfermedad de Hirschsprung o malformaciones anorrectales bajo seguimiento tras haber sido sometidos a cirugía. Materiales y métodos. Se hizo un estudio cualitativo con un enfoque fenomenológico mediante entrevistas a cinco padres de niños con enfermedad de Hirschsprung y a otros cinco de niños con malformaciones anorrectales. Resultados. Se encontraron experiencias comunes, de las cuales surgieron los siguientes temas: a) el diagnóstico difícil, debido a los sentimientos y al impacto generados por la noticia, situación que no siempre es detectada tempranamente por el personal de salud; b) el tratamiento, el cual provoca aislamiento social por las hospitalizaciones y la presencia de una ostomía, además de que los recursos se concentran en el niño en detrimento del hogar; se requiere capacidad de afrontamiento para lograr la reparación quirúrgica definitiva, y c) el contexto, ya que las instituciones de salud pueden convertirse en barreras; además, el personal de salud debe disponer de mayor educación al respecto y son necesarias las redes de apoyo social. Conclusión. Las vivencias reflejan que el diagnóstico, el tratamiento y el contexto generan un gran impacto en las vidas de los padres o cuidadores de niños con estas condiciones.

Abstract Introduction: Hirschsprung's disease and anorectal malformations are pathologies that affect the pediatric population and compromise life from birth, making diagnosis and early treatment essential. The comorbidities they lead to in the long-term take parents and caretakers to situations that, without proper accompaniment, can generate serious complications in the child. Objective: To describe the meaning of the experiences of parents of children with Hirschsprung's disease or anorectal malformations who have had surgical treatment and are being followed-up. Materials and methods: This was a phenomenological qualitative research carried out through interviews with five parents of children with Hirschsprung's disease and five parents of children with anorectal malformations. Results: We found common experiences from which the following topics emerged: a) Difficult diagnosis, which involves the feelings and the impact generated by receiving this news; for health personnel it is not always a situation that is identified early; b) treatment: Social isolation due to hospitalizations and the presence of an ostomy, in addition to the channeling of resources for the child at the expense of those of the home; coping skills are required to achieve definitive surgical repair; and c) context: Health institutions may become barriers and health personnel must have more education in this regard; social support networks are necessary. Conclusion: The experiences reflected that diagnosis, treatment, and context generated great impact on the lives of parents and/or caretakers of children with these pathologies.

[18F]Amylovis as a Potential PET Probe for ß-Amyloid Plaque: Synthesis, In Silico, In vitro and In vivo Evaluations.

BACKGROUND: Alzheimer's disease (AD) is the most common form of dementia. Neuroimaging methods have widened the horizons for AD diagnosis and therapy. The goals of this work are the synthesis of 2-(3-fluoropropyl)-6-methoxynaphthalene (5) and its [18F]-radiolabeled counterpart ([18F]Amylovis), the in silico and in vitro comparative evaluations of [18F]Amylovis and [11C]Pittsburg compound B (PIB) and the in vivo preclinical evaluation of [18F]Amylovis in transgenic and wild mice. METHODS: Iron-catalysis cross coupling reaction, followed by fluorination and radiofluorination steps were carried out to obtain 5 and 18F-Amylovis. Protein/Aß plaques binding, biodistribution, PET/CT Imaging and immunohistochemical studies were conducted in healthy/transgenic mice. RESULTS: The synthesis of 5 was successful obtained. Comparative in silico studies predicting that 5 should have affinity to the Aß-peptide, mainly through π-π interactions. According to a dynamic simulation study the ligand-Aß peptide complexes are stable in simulation-time (ΔG = -5.31 kcal/mol). [18F]Amylovis was obtained with satisfactory yield, high radiochemical purity and specific activity. The [18F]Amylovis log Poct/PBS value suggests its potential ability for crossing the blood brain barrier (BBB). According to in vitro assays, [18F]Amylovis has an adequate stability in time. Higher affinity to Aß plaques were found for [18F]Amylovis (Kd 0.16 nmol/L) than PIB (Kd 8.86 nmol/L) in brain serial sections of 3xTg-AD mice. Biodistribution in healthy mice showed that [18F]Amylovis crosses the BBB with rapid uptake (7 %ID/g at 5 min) and good washout (0.11±0.03 %ID/g at 60 min). Comparative PET dynamic studies of [18F]Amylovis in healthy and transgenic APPSwe/PS1dE9 mice, revealed a significant high uptake in the mice model. CONCLUSION: The in silico, in vitro and in vivo results justify that [18F]Amylovis should be studied as a promissory PET imaging agent to detect the presence of Aß senile plaques.

Cardiovascular Manifestations of Erdheim-Chester's Disease: A Case Series / Manifestações Cardiovasculares da Doença de Erdheim-Chester: Uma série de Casos

Abstract Erdheim-Chester Disease is a rare entity, classified as an inflammatory myeloid neoplasm, with an unknown incidence, occurring preferentially in men after 50 years of age. Classically, it has a multisystemic presentation, with the skeletal system being the most frequently affected (90% of the patients), followed by genitourinary involvement in 60% of cases and central nervous system in the pituitary and diabetes insipidus in 25% of the cases. Cardiovascular manifestations are present in more than half of the patients, with aortic infiltration and atrial pseudotumor being the most common forms.

Resumo A doença de Erdheim-Chester é uma entidade rara classificada como neoplasia mielóide inflamatória, com incidência desconhecida que ocorre preferencialmente em homens após os 50 anos de idade. Classicamente apresenta-se de forma multissistêmica, sendo sistema esquelético o mais frequentemente comprometido (90% dos pacientes), seguido do sistema geniturinário em 60% dos casos e sistema nervoso central em hipófise e diabetes insipidus em 25% dos casos. As manifestações cardiovasculares estão presentes em mais da metade dos pacientes, sendo a infiltração da aorta e o pseudotumor atrial as formas mais encontradas.

Atherosclerotic Plaque in Patients with Zero Calcium Score at Coronary Computed Tomography Angiography / Placa Aterosclerótica à Angiotomografia de Coronárias em Pacientes com Escore de Cálcio Zero

Abstract Background: In view of the high mortality for cardiovascular diseases, it has become necessary to stratify the main risk factors and to choose the correct diagnostic modality. Studies have demonstrated that a zero calcium score (CS) is characteristic of a low risk for cardiovascular events. However, the prevalence of individuals with coronary atherosclerotic plaques and zero CS is conflicting in the specialized literature. Objective: To evaluate the frequency of patients with coronary atherosclerotic plaques, their degree of obstruction and associated factors in patients with zero CS and indication for coronary computed tomography angiography (CCTA). Methods: This is a cross-sectional, prospective study with 367 volunteers with zero CS at CCTA in four diagnostic imaging centers in the period from 2011 to 2016. A significance level of 5% and 95% confidence interval were adopted. Results: The frequency of atherosclerotic plaque in the coronary arteries in 367 patients with zero CS was 9.3% (34 individuals). In this subgroup, mean age was 52 ± 10 years, 18 (52.9%) were women and 16 (47%) had significant coronary obstructions (> 50%), with involvement of two or more segments in 4 (25%) patients. The frequency of non-obese individuals (90.6% vs 73.9%, p = 0.037) and alcohol drinkers (55.9% vs 34.8%, p = 0.015) was significantly higher in patients with atherosclerotic plaques, with an odds ratio of 3.4 for each of this variable. Conclusions: The frequency of atherosclerotic plaque with zero CS was relatively high, indicating that the absence of calcification does not exclude the presence of plaques, many of which obstructive, especially in non-obese subjects and alcohol drinkers.

Resumo Fundamento: Diante da alta mortalidade por doenças cardiovasculares, faz-se necessária a estratificação dos principais fatores de riscos e escolha correta da modalidade diagnóstica. Estudos demonstraram que escore de cálcio (EC) zero caracteriza baixo risco de eventos cardiovasculares. No entanto, a frequência de portadores de placa aterosclerótica coronária com EC zero é conflitante na literatura especializada. Objetivo: Avaliar a frequência de pacientes com placa aterosclerótica coronária, seu grau de obstrução e fatores associados em pacientes com EC zero e indicação para angiotomografia computadorizada de coronárias (ATCC). Métodos: Trata-se de estudo transversal, prospectivo, com 367 voluntários portadores de EC zero, mediante a ATCC, no período de 2011-16, em quatro centros de diagnóstico por imagem. Foi assumido nível de significância 5% e intervalo de confiança de 95%. Resultados: A frequência de placa aterosclerótica nas artérias coronárias dos 367 pacientes com EC zero foi de 9,3% (34 indivíduos); neste subgrupo, a média de idade foi 52 ± 10 anos, 18 (52,9%) eram mulheres e 16 (47%) exibiam obstruções coronarianas significativas (> 50%), dos quais 4 (25%) apresentaram placas em pelo menos dois segmentos. A frequência de não obesos (90,6% vs. 73,9%; p = 0,037) e de etilistas (55,9% vs. 34,8%; p = 0,015) foi significativamente maior nos portadores de placa, apresentando, cada variável, odds ratio de 3,4 para o desenvolvimento das referidas placas. Conclusões: A frequência de placa aterosclerótica com EC zero foi considerável, evidenciando, portanto, que a ausência de calcificação não exclui placa, muitas das quais obstrutivas, principalmente nos não obesos e etilistas.

Costos de la prueba de tamización para la enfermedad de Chagas en donantes de dos bancos de sangre de Colombia, 2015 / Costs of Chagas' disease screening test in blood donors in two Colombian blood banks, 2015

Resumen Introducción . La transfusión es un mecanismo de transmisión de la enfermedad de Chagas. No se han hecho estudios de costos de la prueba de tamización en bancos de sangre de Colombia. Objetivo. Estimar los costos de la prueba de tamización para la enfermedad de Chagas en donantes de bancos de sangre de Colombia, 2015. Materiales y métodos. Se hizo un estudio de costos desde la perspectiva del prestador de servicios en los bancos de sangre de la Cruz Roja, seccional Bolívar, y del Hospital de Yopal, Casanare, que incluyó: 1) gastos administrativos, es decir, costos de servicios públicos y seguros asignados según los metros cuadrados de las instalaciones del banco de sangre; 2) costos de capital, es decir, edificación y equipos, anualizados con una tasa de descuento de 3 % y considerando una vida útil de 20 y cinco años, respectivamente; 3) costos de insumos y materiales ajustados al nivel de producción, y 4) costos del recurso humano encargado del procesamiento de las pruebas. Se reportó, asimismo, el costo de las bolsas y de las pruebas de inmunohematología. Resultados. En el banco de sangre de la Cruz Roja, seccional Bolívar, el costo de la prueba fue de COP$ 37.804 (USD$ 12), mientras que la bolsa y la prueba de inmunohematología costaron COP$ 25.942 (USD$ 8,2) y COP$ 6.800 (USD$ 2,2), respectivamente. En el banco de sangre del Hospital de Yopal, los costos ascendieron a COP$ 77.384 (USD$ 24,6), COP$ 30.141 (USD$ 9,6) y COP$ 12.627 (USD$ 4), respectivamente. La mayor participación en el costo de la prueba correspondió al recurso humano (47,5 % en Cartagena y 55,7 % en Yopal). Conclusiones. Estos resultados son importantes para la planificación de los servicios y los análisis de costo-efectividad de la prueba de tamización para la enfermedad de Chagas en los bancos de sangre.

Abstract Introduction: Transfusion is a mechanism of transmission of Chagas' disease. There are no studies on the costs of the screening test in Colombian blood banks. Objective: To estimate the costs of the screening test for Chagas' disease among blood donors in two Colombian blood banks, 2015. Materials and methods: We conducted a micro-costing study from the perspective of the health care provider to estimate the cost of Chagas' disease testing in two blood banks, Banco de Sangre de la Cruz Roja, Seccional Bolívar, and Banco de Sangre del Hospital de Yopal, Casanare, taking into account four cost categories: 1) Administrative costs: public services and insurance costs were calculated based on the blood bank area in square meters; 2) capital costs: building and equipment costs that were annualized using a 3% discount rate and a lifespan of 20 years for building and five for equipment; 3) costs of Chagas' disease test materials and reagents adjusted by blood bank production level, and 4) costs of staff in charge of Chagas' disease test processing. The costs of transfusion bags and immunohematology tests are also reported. Results: The cost of Chagas' disease test in the blood bank of Seccional Bolívar was COP$ 37,804 (USD$ 12), and the blood bag and immunohematology test costs were COP$ 25,941 (USD$ 8.2) and COP$ 6,800 (USD$ 2.2), respectively. In the blood bank of Yopal, Casanare, the costs were COP$ 77,384 (USD$ 24.6), COP$ 30,141 (USD$ 9.6) and COP$ 12,627 (USD$ 4), respectively. Personnel cost accounted for the highest percentage of the total cost for both blood banks (47.5% in Seccional Bolívar, and 55.7% in Yopal, Casanare). Conclusion: Our results are an important input for the planning of services and cost-effectiveness studies for screening tests for Chagas' disease in Colombian blood banks.

Revisão da apresentação da doença celíaca num hospital pediátrico terciário / Review of celiac disease presentation in a pediatric tertiary centre

ABSTRACT BACKGROUND: Celiac disease is an immune-mediated disorder with a multiform presentation and therefore a challenging diagnosis. OBJECTIVE: Our purpose is to identify the epidemiological, clinical, laboratory and histologic characteristics of children with celiac disease at diagnosis and on follow-up. METHODS: Children with previously established or newly diagnosed celiac disease, admitted in a tertiary centre in a two-year period (2014-2016) were recruited. Data was collected retrospectively from electronic medical records and clinical notes, and subsequently analysed with SPSS version 20.0. RESULTS: A total of 159 patients, out of 312, were included. Age ranged from 1 to 17 years (mean ± SD: 8.5±4.5 years, 69% girls). Disease presentation was classical in 60%, non-classical in 25%, subclinical in 10% and 5% classified as potential celiac disease. Non-classical and subclinical profiles had a higher mean age at presentation but not statistically significant (P-value 0.24). The most frequent gastrointestinal features at presentation were abdominal pain (58%), diarrhea (43%) and bloating (27%). A positive family history for celiac disease was present in 24% (n=35). We found anaemia in 23%, low ferritin in 63% and a moderate to severe deficiency of 25-hydroxyvitamin D in 62%. celiac disease -specific serologic testing and esophagogastroduodenoscopy were performed in 99%. Histology revealed modified Marsh 2 or 3 enteropathy in 94%, the remaining had normal histology but positive human leukocyte antigen typing. Clinical improvement at 12 months of gluten-free diet was complete in 51% and partial in 49%. IgA tTG normalized after 12-30 months of gluten-free diet in 45%. On growth assessment at diagnosis and after 12-28 months of gluten-free diet, 100% had height increase (mean ±SD: 7.11±4.43 cm) and 96% weight gain (mean ±SD: 5.60±4.91 kg). CONCLUSION: Our findings outline the diverse clinical presentations of pediatric celiac disease that should be considered irrespective of age. Increased clinician's awareness will enable an early diagnosis and treatment, with subsequent symptom and nutritional status improvement.

RESUMO CONTEXTO: A doença celíaca é uma doença imuno-mediada com uma apresentação multiforme constituindo, por isso, um desafio diagnóstico. OBJETIVO: O objetivo deste trabalho foi identificar as características epidemiológicas, clínicas, laboratoriais e histológicas ao diagnóstico e no seguimento de crianças com doença celíaca. MÉTODOS: Foram incluídas crianças com doença celíaca admitidas num hospital pediátrico terciário ao longo de 2 anos (2014-2016). A recolha da informação clínica foi retrospetiva a partir dos processos clínicos eletrônicos ou em papel e analisada com o software SPSS versão 20.0. RESULTADOS: Foram incluídos 159 doentes, a partir de uma amostra de 312. A idade variou entre 1 e 17 anos (média ± desvio padrão: 8,5±4,5 anos, 69% do sexo feminino). A apresentação da doença foi clássica em 60%, não clássica em 25%, subclínica em 10% e classificada como doença celíaca potencial em 5%. Os doentes com apresentações não clássica e subclínica, tiveram uma idade média de apresentação superior, mas sem significância estatística (P=0,24). Ao diagnóstico, as manifestações gastrointestinais mais frequentes foram dor abdominal (58%), diarreia (43%) e distensão abdominal (27%). Havia história familiar de doença celíaca em 24% (n=35) dos doentes. Foi detetada anemia em 23%, níveis baixos de ferritina em 63% e um défice moderado a grave de 25-hidroxivitamina D em 62%. Foram realizados testes serológicos para a doença celíaca e a esofagogastroduodenoscopia em 99%. Os achados histológicos revelaram enteropatia nos estágios de Marsh modificado tipo 2 ou 3 em 94%, os restantes apresentavam histologia normal mas tipagem do antigénio leucocitário humano positiva. Aos 12 meses de dieta sem glúten a melhoria clínica foi completa em 51% e parcial em 49%. O valor de IgA tTG normalizou em 45% após 12-30 meses de dieta sem glúten. Na avaliação do crescimento, ao diagnóstico e após 12-28 meses de dieta sem glúten, 100% teve evolução estatural positiva (média ±DP: 7,11±4,43 cm) e 96% aumentaram de peso (média ±DP: 5,60±4,91 kg). CONCLUSÃO: Os resultados do estudo evidenciam a diversidade da apresentação clínica da doença celíaca em pediatria, devendo ser considerada em todas as idades. Um maior reconhecimento da doença pelos médicos permitirá um diagnóstico e tratamento atempados, com subsequente melhoria sintomática e do estado nutricional.

Epidemiological analysis of patients with Dupuytren's disease / Análise epidemiológica dos pacientes com doença de Dupuytren

ABSTRACT Objective: To evaluate the risk factors and analyze the characteristics of patients and lesions in Dupuytren's disease. Methods: Retrospective analysis of patients diagnosed with Dupuytren's disease in a hand surgery clinic in 2013. The authors evaluated parameters associated with the patient profiles and risk factors, the form and severity of involvement, and characteristics of the lesions. Results: 58 patients were evaluated, totaling 79 hands, with bilateral involvement in 46% of cases. The involvement of the ulnar fingers of the hand represented 78%, 44% being the ring finger. In 55% of cases, the patients had cords, while 45% showed only nodules. As for related factors, they were found most commonly in men (55%), whites (93%), and the elderly. Of coexisting diseases, the following were present: diabetes mellitus (49%), especially in the insulin-dependent (62%), hypertension (55.2%), and dyslipidemia (19%). With regard to lifestyle, 22% were smokers and 9% were alcohol consumers. Conclusion: It was observed a higher incidence of Dupuytren's disease was observed among men, whites, and the ulnar fingers of the hand, especially the ring finger. The most common associated diseases were diabetes mellitus and hypertension.

RESUMO Objetivo: Avaliar os fatores de risco e analisar as características dos pacientes e das lesões encontradas em portadores da doença de Dupuytren. Métodos: Análise retrospectiva dos pacientes diagnosticados com a doença de Dupuytren no ambulatório de cirurgia da mão em 2013. Foram avaliados parâmetros associados ao perfil dos pacientes e fatores de risco, a forma e gravidade do acometimento e as características das lesões. Resultados: Foram avaliados 58 pacientes, 79 mãos, com acometimento bilateral em 46% dos casos. O envolvimento dos dedos do lado ulnar da mão representou 78%, 44% dos casos no dedo anular. Em 55% dos casos os pacientes apresentavam cordas, enquanto 45% mostravam apenas nódulos. Quanto aos fatores relacionados, encontramos predomínio em homens (55%), brancos (93%) e idosos. Das doenças coexistentes, estavam presentes a diabetes mellitus (49%), especialmente nos insulinodependentes (62%), hipertensos (55,2%) e dislipidêmicos (19%). Com relação aos hábitos de vida, 22% eram fumantes e 9% etilistas. Conclusão: Foi observada uma maior incidência da doença de Dupuytren entre homens, brancos, nos dedos do lado ulnar da mão, principalmente no dedo anular. As doenças mais comumente associadas foram o diabetes mellitus e hipertensão arterial sistêmica.

Epidemiological analysis of patients with Dupuytren's disease.

OBJECTIVE: To evaluate the risk factors and analyze the characteristics of patients and lesions in Dupuytren's disease. METHODS: Retrospective analysis of patients diagnosed with Dupuytren's disease in a hand surgery clinic in 2013. The authors evaluated parameters associated with the patient profiles and risk factors, the form and severity of involvement, and characteristics of the lesions. RESULTS: 58 patients were evaluated, totaling 79 hands, with bilateral involvement in 46% of cases. The involvement of the ulnar fingers of the hand represented 78%, 44% being the ring finger. In 55% of cases, the patients had cords, while 45% showed only nodules. As for related factors, they were found most commonly in men (55%), whites (93%), and the elderly. Of coexisting diseases, the following were present: diabetes mellitus (49%), especially in the insulin-dependent (62%), hypertension (55.2%), and dyslipidemia (19%). With regard to lifestyle, 22% were smokers and 9% were alcohol consumers. CONCLUSION: It was observed a higher incidence of Dupuytren's disease was observed among men, whites, and the ulnar fingers of the hand, especially the ring finger. The most common associated diseases were diabetes mellitus and hypertension.

OBJETIVO: Avaliar os fatores de risco e analisar as características dos pacientes e das lesões encontradas em portadores da doença de Dupuytren. MÉTODOS: Análise retrospectiva dos pacientes diagnosticados com a doença de Dupuytren no ambulatório de cirurgia da mão em 2013. Foram avaliados parâmetros associados ao perfil dos pacientes e fatores de risco, a forma e gravidade do acometimento e as características das lesões. RESULTADOS: Foram avaliados 58 pacientes, 79 mãos, com acometimento bilateral em 46% dos casos. O envolvimento dos dedos do lado ulnar da mão representou 78%, 44% dos casos no dedo anular. Em 55% dos casos os pacientes apresentavam cordas, enquanto 45% mostravam apenas nódulos. Quanto aos fatores relacionados, encontramos predomínio em homens (55%), brancos (93%) e idosos. Das doenças coexistentes, estavam presentes a diabetes mellitus (49%), especialmente nos insulinodependentes (62%), hipertensos (55,2%) e dislipidêmicos (19%). Com relação aos hábitos de vida, 22% eram fumantes e 9% etilistas. CONCLUSÃO: Foi observada uma maior incidência da doença de Dupuytren entre homens, brancos, nos dedos do lado ulnar da mão, principalmente no dedo anular. As doenças mais comumente associadas foram o diabetes mellitus e hipertensão arterial sistêmica.