Role of gestational age and maternal biological factors in early term neonatal morbidity / Rol de la edad gestacional y factores biológicos maternos en la morbilidad del neonato a término temprano

Abstract Background: The morbidity of early-term newborns (ETNBs) is associated with the immaturity of their organs and maternal biological factors (MBF). In this study, we determined the relationship between MBF and early-term birth. In addition, we assessed the role of gestational age (GA) and MBF in the morbidity of ETNBs compared with full-term newborns (FTNBs). Methods: This retrospective cohort included ETNBs and FTNBs. The frequency of morbidities was compared between groups stratified by GA with the X2 test or Fisher's exact test. The association of MBF with GA and morbidity was calculated using binomial regression models between the variables that correlated with the morbidity of the ETNBs using Spearman's correlation. A significance level of 5% was estimated for all analyses. Results: The probability of morbidity at birth for ETNBs was 1.9-fold higher than for FTNBs (37.5% vs. 19.9%), as they required more admission to the neonatal unit and more days of hospitalization; the most frequent pathology was jaundice. The MBF associated with early term birth were hypertensive disorders of pregnancy (aRR = 1.4, 95% confidence interval (CI): 1.3-1.6), intrauterine growth restriction (aRR = 1.5, 95% CI: 1.3-1.6), and chronic hypertension (aRR = 1.6, 95% CI: 1.4-1.8). No association was found between MBF and morbidity at 37 and 38 weeks. Conclusions: The morbidity among ETNBs is related to physiological immaturity. The adverse MBF favor a hostile intrauterine environment, which affects fetal and neonatal well-being.

Resumen Introducción: La morbilidad de los recién nacidos a término temprano (RNTT) se asocia con la inmadurez de sus órganos y factores biológicos maternos (FBM). En este estudio se determinó la relación entre FBM y el nacimiento a término temprano. Además, se evaluó el papel de la edad gestacional (EG) y los FBM en la morbilidad de los RNTT comparados con los recién nacidos a término completo (RNTC). Métodos: Este estudio de cohorte retrospectivo incluyó RNTT y RNTC. La frecuencia de morbilidades se comparó entre grupos estratificados por EG con la prueba de X2 o la prueba exacta de Fisher. La asociación de FBM con EG y morbilidad se calculó mediante modelos de regresión binomial entre variables correlacionadas con morbilidad de ETNB mediante la correlación de Spearman. Se estimó un nivel de significación del 5% para todos los análisis. Resultados: Los RNTT presentaron una probabilidad 1.9 veces mayor de morbilidad al nacer comparado con los RNTC (37.5% vs 19.9%), ya que requirieron mayor admisión a la unidad neonatal y más días de hospitalización; la patología más frecuente fue la ictericia. Los FBM asociados con el nacimiento a término temprano fueron los: trastornos hipertensivos gestacionales, restricción del crecimiento intrauterino e hipertensión crónica. No se encontró asociación entre factores biológicos maternos y la morbilidad a las 37 y 38 semanas. Conclusiones: La morbilidad del RNTT se relaciona con la inmadurez fisiológica. Los FBM adversos favorecen un medio intrauterino hostil afectando el bienestar fetal y neonatal.

Biologics in treatment of lupus nephritis / 中华肾脏病杂志

Systemic lupus erythematosus (SLE) is an autoimmune disease that causes damage to multiple vital tissues and target organs, and lupus nephritis (LN) is a serious complication of SLE involving the kidneys. The use of glucocorticoids and immunosuppressants has been dominant in the treatment strategy of LN, while their adverse effects have also raised concerns. In recent years, the development and use of biologics have provided new ideas for the treatment of LN and have also achieved positive efficacy in several clinical trials in SLE and LN. Biologics can be divided into monoclonal antibodies and recombinant proteins, which exert therapeutic effects on SLE and LN through a variety of mechanisms at the cellular-molecular level. In this article, we review recent research advances in the treatment of SLE and LN from the perspective of the different mechanisms of action of biologics.

Regulatory role of mechanical forces in the formation of liver organoids / 临床肝胆病杂志

In recent years， the continuous advances in material sciences and techniques have helped with the establishment and development of liver organoids that can simulate the structure and function of organs in vivo. In addition to the research on traditional biological factors， the construction of microenvironments with different mechanical cues to investigate the influence of mechanical stimulation on the growth of liver organoids has also become a research focus. This article first discusses the development of liver organoids and then reviews the influence of mechanical forces of different properties on the formation of liver organoids， so as to lay a foundation for the construction of more complex and ordered liver organoids in vitro and provide ideal research models for understanding the interaction between biological and mechanical factors in the formation of liver organoids.

Pandemias y epidemias ocasionadas por agentes biológicos: un gran azote para la humanidad

Introducción: Las pandemias y epidemias son acontecimientos mundiales de la sociedad humana, que expresan gran catástrofe y desolación, acompañadas de elevada letalidad y repercusión marcada en los servicios de salud. Han diezmado sociedades, de forma similar a las guerras, pero contribuyen al surgimiento de avances en las ciencias. Objetivo: Describir las características y peculiaridades de las pandemias y epidemias ocurridas en diferentes épocas de la historia, en el contexto de la salud pública y su gran repercusión social. Métodos: Se utilizaron las bases de datos SciELO, PubMed, Google Scholar, sitios web de la OMS y la OPS, además de otras fuentes y recursos de información disponibles en Internet a las cuales se accedieron por medio del buscador web de Google. En la elaboración de la estrategia de búsqueda se utilizó el vocabulario controlado de los Descriptores en Ciencias de la Salud. Los términos utilizados fueron: pandemia, epidemia, plaga, peste, vacuna. Se recuperaron 40 artículos y documentos científicos que se seleccionaron dada su pertinencia para la investigación. Conclusiones: Las pandemias y epidemias requieren medidas de promoción de salud que estimulen un adecuado saneamiento ambiental, la disponibilidad del agua potable, correcto lavado de las manos, así como prevenir la expansión del contagio y la disminución de los riesgos que implican el cambio climático, la falta de control de los vectores y la pobreza entre otras, para contribuir a disminuir la morbi-mortalidad. La carencia de estrategias preventivas, obliga a desarrollar centros especializados para producir vacunas, que garanticen la protección específica de poblaciones susceptibles.

Introduction: Pandemics and epidemics are global events in human society, which express great catastrophe and desolation, accompanied by high lethality and marked repercussions on health services. They have decimated societies, similar to wars, but they contribute to the emergence of advances in the sciences. Objective: To describe the characteristics and peculiarities of pandemics and epidemics that occurred at different times in history, in the context of public health and its great social impact. Methods: The SciELO, PubMed, Google Scholar databases, WHO and PAHO websites and other sources and information resources available on the Internet were used, which were accessed through the Google web browser. In the elaboration of the search strategy, the controlled vocabulary of the Descriptors in Health Sciences was used. The terms used were: pandemic, epidemic, rinderpest, plague, vaccine. 40 scientific articles and documents were retrieved and selected given their relevance for the investigation. Conclusions: Pandemics and epidemics require health promotion measures that stimulate adequate environmental sanitation, the availability of drinking water, correct hand washing, as well as preventing the spread of contagion and reducing the risks implied by climate change, lack of vector control and poverty among others, to contribute to reducing morbidity and mortality. The lack of preventive strategies forces the development of specialized centers to produce vaccines that guarantee the specific protection of susceptible populations.

Cardiomyopathy Induced by Artificial Cardiac Pacing: To Whom, When, Why, and How? Insights on Heart Failure Development

ABSTRACT Coordinated and harmonic (synchronous) ventricular electrical activation is essential for better left ventricular systolic function. Intraventricular conduction abnormalities, such as left bundle branch block due to artificial cardiac pacing, lead to electromechanical "dyssynchronopathy" with deleterious structural and clinical consequences. The aim of this review was to describe and improve the understanding of all the processes connecting the several mechanisms involved in the development of artificially induced ventricular dyssynchrony by cardiac pacing, most known as pacing-induced cardiomyopathy (PiCM). The chronic effect of abnormal impulse conduction and nonphysiological ectopic activation by artificial cardiac pacing is suspected to affect metabolism and myocardial perfusion, triggering regional differences in the activation/contraction processes that cause electrical and structural remodeling due to damage, inflammation, and fibrosis of the cardiac tissue. The effect of artificial cardiac pacing on ventricular function and structure can be multifactorial, and biological factors underlying PiCM could affect the time and probability of developing the condition. PiCM has not been included in the traditional classification of cardiomyopathies, which can hinder detection. This article reviews the available evidence for pacing-induced cardiovascular disease, the current understanding of its pathophysiology, and reinforces the adverse effects of right ventricular pacing, especially right ventricular pacing burden (commonly measured in percentage) and its repercussion on ventricular contraction (reflected by the impact on left ventricular systolic function). These effects might be the main defining criteria and determining mechanisms of the pathophysiology and the clinical repercussion seen on patients.

A study on certolizumab pegol in the treatment of inflammatory joint diseases of women of childbearing age / 中华风湿病学杂志

Objective:To evaluate the efficacy of certolizumab pegol (CZP) in the treatment of Chinese women of childbearing age with inflammatory joint diseases and the effect of intrauterine exposure on infant vaccination and risk of infection.Methods:This study is a retrospective observation study, including female patients of childbearing age who were treated with CZP in the outpatient clinic from November 2019 to October 2020. The patients were followed up for 24 weeks, and the related data was collected. We adopted disease activity score-28 for rheumatoid arthritis with CRP (DAS28-CRP), clinical disease activity index (CDAI) and simplified disease activity index (SDAI) to evaluate disease activity. Bath ankylosing spon-dylitis disease activity index (BASDAI) and ankylosing spondylitis disease activity score (ASDAS-ESR) were used to assess the disease activity of patients with ankylosing spondylitis or spondyloarthritis (AS/SpA). Low disease activity (LDA), the dosage of glucocorticoid (GC) and the qualified rates of ACR20 and ASAS20 were calculated to validate the efficacy of CZP. The data of infants vaccination and infection was recorded to estimate the effect of intrauterine exposure on infants. Correlation analysis were performed using paired t test or Mann Whitney test. All statistical tests were bilateral, with a significance of P<0.05. Results:Twenty women entered the study and fifteen completed, including eight patients with RA, six patients with AS and 1 patient with SpA. The average age was (30±5) years and the median symptom duration was 5.0 (3.0, 6.5) years. When these RA patients were enrolled into the study, DAS28-CRP, CDAI and SDAI were (3.4±1.2), 15.5(9.5, 21.0) and (18±12) respectively; and after the use of CZP, the DAS28-CRP, CDAI and SDAI changed to (2.5±0.9)( t=2.48, P=0.042), 4.5(3.5, 10.8) ( U=12.50, P=0.040) and (9±6) (t=2.76, P=0.028). At the first follow-up, the ACR20 rate was 50%. and at the end of the study, the LDA rate was 75%(6/8), three(37.5%) women reduced the dosage of GC. Among the AS/SpA patients, BASDAI was 19.0(14.5, 26.0) and ASDAS-ESR was (2.4±1.0) at first, while after treatment, BASDAI turned into 9.0(1.0, 10.5) ( U=11.50, P=0.100) and ASDAS-ESR turned into (1.4±0.5) ( t=3.44, P=0.014). The ASAS20 rate at the first follow-up was 71.4%(5/7), and 85.7%(6/7) at the end of the study. Four patients experienced adverse events, resulting in drug withdrawal. Three women were pregnant when they were enrolled into the study, and three others became pregnant during the research. Six infants were vaccinated with live attenuated vaccines and inactivated vaccines according to the plan. No adverse event related to vaccination was reported, but one of the babies had perianal abscess and the other one had cold symptoms, while both improved after treatment. Conclusion:CZP can effectively control disease activity of women with inflammatory joint diseases during pregnancy, and intrauterine exposure is safe to infants during the study period.

Expresión génica de mediadores moleculares para potencial terapia celular en el síndrome gastrointestinal inducido por radiación / Genetic expression of molecular mediators for potential cell therapy in radiation-induced gastrointestinal syndrome

Antecedentes: Las células madres intestinales generan las distintas estirpes celulares a dicho nivel. Estas se regulan por interacciones entre el epitelio y las células del nicho celular anexo. Estas se pueden ver dañadas en tratamientos con radiación, generando el síndrome gastrointestinal inducido por radiación. Se ha visto que células madre mesenquimales (MSC) y macrófagos de médula ósea (BMM) tienen propiedades de regeneración tisular. Objetivos: Evaluar la expresión génica de IL-4, Wnt6, VEGF y bFGF, a partir de cultivos celulares primarios independientes de MSC derivadas de tejido adiposo y BMM de ratones C57BL/6, por medio de PCR en tiempo real (qRT-PCR). Diseño experimental: A partir de un análisis in silico, se confeccionaron primers para evaluar la expresión génica de las moléculas propuestas, en los cultivos primarios por medio de qRT-PCR y electroforesis. Resultados y proyecciones: IL-4 y Wnt6 no son expresadas en las muestras de BMM y MSC. VEGF y bFGF son expresadas por diferentes células, dando expresión diferenciada. A futuro, se deben evaluar las mismas estirpes celulares en un ambiente inflamatorio y su efecto en la expresión génica, en especial VEGF y bFGF. Limitaciones: El número de moléculas en estudio es limitado y la expresión se evalúo solo a nivel genético.

Background: Intestinal stem cell generates diferents cellular types in their niche. They're regulated by interactions between epithelium and niche's cells, and can be damaged by medical radiation treatments causing radiation-induced gastrointestinal syndrome. It has seen that mesenchymal stem cells (MSC) d and bone marrow-derived macrophages (BMM) have propierties of tissular regeneration. Objectives: Determinated genetic expression of IL-4, Wnt6, VEGF and bFGF, in primary cellular cultures of MSC derivated of adipose tissue and BMM of C57BL/6 mice, through real time PCR (qRT-PCR). Methods: By an in silico analysis, we created primers to evaluate the proposed molecules in the primary cellular cultives, with qRT-PCR and electrophoresis. Results and projections: IL-4 and Wnt6 were not expressed in the MSC and BMM samples. VEGF and bFGF were expressed by different cells, giving differential expression. In the future, the same samples should be analyzed in an inflammatory environment, especially VEGF and bFGF. Limitations: The number of molecules are limited and the expression of them is only in a genetic level.

Características pessoais e do ambiente associadas com transtorno do desenvolvimento da coordenação / Personal and environmental characteristics associated with coordination development disorder

RESUMO Identificar a associação entre características pessoais e ambientais de crianças com provável transtorno do desenvolvimento da coordenação (TDC). Participaram 42 pais, 32 professores e 42 pré-escolares (3,4±0,5 anos). Como instrumentos foram utilizados o Movement Assessment Battery for Children 2 (MABC-2), o Teste de Maturidade Mental Columbia (EMMC), o Questionário da Associação Brasileira de Empresas de Pesquisas (ABEP), o Strengths and Difficulties Questionnaire (SDQ), o Swanson Nolan and Pelham IV Scale (SNAP-IV), o Questionário de percepção de pais/responsáveis sobre habilidades motoras, acadêmicas, emocionais e comportamentais e o Early Years Movement Skills Checklist. Na análise foi utilizado o teste Shapiro Wilk e Regressão Logística Binária (p<0,05). Os resultados demostraram diferença estatisticamente significativa para as seguintes características associadas às crianças com persistência de TDC: 1) características pessoais: o peso ao nascer, a idade de sentar, o desenvolvimento cognitivo, os problemas de linguagem e os problemas de conduta; 2) características ambientais da família: a união estável dos pais, a melhor qualidade do ambiente domiciliar; 3) no ambiente escolar o nível de escolaridade do professor. Conclui-se que as crianças que nasceram com maior peso, que apresentaram desenvolvimento cognitivo superior, vivem com pais em união estável, que possuem professor de sala especialista e apresentaram menores chances de persistir no TDC.

ABSTRACT Identify the associtation among personal and environmental characteristics on the motor development of children with probable developmental coordination disorder (DCD). The participants were 42 parents, 32 teachers and 42 preschoolers' (3.4±0.5years). As measurement instruments: The Movement Assessment Battery for Children 2 (MABC2), the Columbia Mental Maturity test (EMMC), the Questionnaire of the Brazilian Association of Research Companies (ABEP), the Strengths and Difficulties Questionnaire (SDQ), the Swanson Nolan and Pelham IV Scale (SNAP-IV), Structured Questionnaire for parents on motor, academic, emotional and behavioral skills and Early Years Movement Skills Checklist were used. For data analysis, the Shapiro Wilk test and Binary Logistic Regression were used, adopting p <0.05. Results shown statistically significant difference for the personal characteristics associated with children with persistence DCD: 1) birth weight, age to sit, cognitive development, language problems and conduct problems; 2) For home characteristics: quality of the home environment and the parents' stable union were taken into account; 3) For day care center, the education of the classroom teacher was considered. In conclusion, children who were born with greater weight, who had higher cognitive development, live with parents in a stable relationship and who have a specialized classroom teacher were less likely to persist in DCD.

Acidentes com material biológico: uma análise com profissionais de enfermagem / Accidents with biological material: An analysis with Nursing professionals / Accidentes con material biológico: un análisis con profesionales de Enfermería

Objetivo: analisar os acidentes com material biológico ocorridos com profissionais de enfermagem no Estado do Paraná em 2016. Método: estudo transversal realizado em outubro de 2018 com dados disponibilizados pelo Centro Estadual de Saúde do Trabalhador do Paraná. Utilizaram-se análises descritivas e, para as associações, o teste de qui-quadrado (p<0,05). Resultados: foram analisados 2.436 casos de acidentes na equipe de enfermagem, dos quais 1.974 registrados entre técnicos e auxiliares. Houve predomínio dos acidentes em mulheres, na faixa etária de 30 a 49 anos. A forma de exposição mais frequente foi a percutânea, as circunstâncias mais referidas foram relacionadas à punção ou administração de medicação endovenosa e observou-se redução significativa do uso de equipamento de proteção individual conforme o aumento da idade, entre profissionais do nível médio. Conclusão: evidenciou-se a necessidade de elaboração de estratégias voltadas à educação permanente desses profissionais para garantir a prevenção de acidentes e/ou doenças ocupacionais.

Objective: to analyze the accidents involving biological material that occurred with Nursing professionals in Paraná in 2016. Method: a cross-sectional study carried out in October 2018 with data provided by the State Center for Workers' Health of Paraná. Descriptive analyses were used and, for the associations, the chi-square test (p<0.05) was employed. Results: a total of 2,436 cases of accidents in the Nursing team were analyzed, of which 1,974 were recorded among technicians and assistants. There was predominance of accidents in women, aged between 30 and 49 years old. The most frequent kind of exposure was percutaneous, the most reported circumstances were related to the puncture or administration of intravenous medication, and a significant reduction in the use of personal protective equipment was observed with increasing age among mid-level professionals. Conclusion: the need to develop strategies aimed at the permanent education of these professionals was evidenced to ensure prevention of accidents and/or occupational diseases.

Objetivo: analizar los accidentes con material biológico ocurridos con profesionales de Enfermería en el estado de Paraná en el año 2016. Método: estudio transversal realizado en octubre de 2018 con datos puestos a disposición por el Centro Estatal de Salud Laboral de Paraná. Se utilizaron análisis descriptivos y, para las asociaciones, la prueba de chi-cuadrado (p<0,05). Resultados: se analizaron 2436 casos de accidentes en el equipo de Enfermería, de los cuales 1974 se registraron entre técnicos e auxiliares. Hubo predominio de accidentes en mujeres, en el grupo etario de 30 a 49 años. La forma de exposición más frecuente fue la percutánea, las circunstancias más mencionadas estuvieron relacionadas con la punción o administración de medicación endovenosa y se observó una significativa reducción en el uso de equipos de protección personal a medida que aumentó la edad de los participantes, entre profesionales de nivel medio. Conclusión: se hizo evidente la necesidad de elaborar estrategias dirigidas a la educación permanente de estos profesionales para garantizar la prevención de accidentes y/o enfermedades laborales.

Trastorno por juego en Internet: ¿Existen diferencias en cuanto al género? / Internet gaming disorder: ¿Are there any gender differences?

La evidencia para el diagnóstico y el manejo del trastorno por juego en Internet está creciendo. Factores psicológicos y biológicos están involucrados en su etiopatogenia y estos factores pueden presentar diferentes niveles de contribución al trastorno dependiendo del género del paciente. Teniendo en cuenta que la tasa de individuos masculinos en comparación con la tasa femenina en el trastorno por juego en Internet es de aproximadamente 3:1 y que la mayoría de los estudios disponibles se realizan en poblaciones predominantemente masculinas, se realizó una revisión narrativa, no sistemática, centrada en literatura primaria y seleccionada de una búsqueda en las bases de datos PubMed y SciELO. Los términos clave que se utilizaron fueron los siguientes: "Internet Gaming Disorder" y "Internet Gaming Disorder and Gender". Todos los miembros del equipo de investigación participaron en la revisión de la literatura. Todo lo anterior se realizó a fin de presentar una imagen general sobre las diferencias de género en los juegos en línea, que pueda servir para mejorar los conocimientos de los trabajadores de la salud mental sobre este desafiante grupo de pacientes.

The body of evidence for Internet Gaming Disorder is growing. Both psychological and biological factors are involved in its etiopathogenesis and these factors may present different levels of contribution to the disorder depending on the gender of the patient. Taking into account that the rate of male individuals compared with the female rate in the Internet Gaming Disorder is about 3:1 and that most of the available studies are done in predominantly male populations, a non-systematic narrative review was done, focused on primary literature and selected from a search in PubMed and SciELO databases. The key terms used were: "Internet gaming disorder" and "Internet gaming disorder and gender". All members of the research team participated in the review of the literature. All the above was done in order to present a general picture about gender differences in online games, which can be used to improve the knowledge of mental health workers about this challenging group of patients.

Research focus and application advantages in encapsulating biomaterial for islet transplantation / 中国组织工程研究

BACKGROUND: Currently, it was confirmed that encapsulating islets with natural or synthetic biomaterials to form a barrier with the function of immune isolation can not only reduce the systematic use of immunosuppressive agents to a certain extent, but also make heterogenous islet transplantation possible. OBJECTIVE: To introduce the research progress of the biomaterials for islet transplantation, describe several models for encapsulating islet, and eventually discuss current research focus and prospects of islets encapsulating models. METHODS: The authors searched PubMed and Web of Science databases with the search terms “islet encapsulation, islet transplantation biomaterials, islet transplantation hydrogel” for relevant papers published. Initially, a total of 447 papers were retrieved, and 89 of them were included in the final analysis. RESULTS AND CONCLUSION: There are two main deficiencies in islet encapsulation for transplantation: one is the attack of immune rejection by the recipient; the other is the shortage of supply of oxygen and nutrient. Encapsulation of islet with a single material, synthetic or natural biomaterial, cannot address the two issues mentioned above. Herein, the biomaterial used for islet encapsulation must be modified. Current islet hydrogel models tend to combine synthetic biomaterials with natural biomaterials to take full advantage of the two kinds of biomaterials. In addition, immune-regulating drugs, angiogenic factors, or factors promoting the survival or function of islets can also be incorporated into the biomaterial. Besides, other cells can be involved to co-transplant with islets in the hydrogel. How to incorporate various strategies for addressing the above issues properly is the key of future research.

Effect of early determinants on adolescent fat-free mass: RPS cohort of São Luís - MA

ABSTRACT OBJECTIVE: To analyze the effects of early determinants on adolescent fat-free mass. METHODS: A cohort study with 579 adolescents evaluated at birth and adolescence in a birth cohort in São Luís, Maranhão. In the proposed model, estimated by structural equation modeling, socioeconomic status (SES) at birth, maternal age, pregestational body mass index (BMI), gestational smoking, gestational weight gain, type of delivery, gestational age, sex of the newborn, length and weight at birth, adolescent socioeconomic status, "neither study/nor work" generation, adolescent physical activity level and alcohol consumption were tested as early determinants of adolescent fat-free mass (FFM). RESULTS: A higher pregestational BMI resulted in higher FFM in adolescence (Standardized Coefficient, SC = 0.152; p < 0.001). Being female implied a lower FFM in adolescence (SC = −0.633; p < 0.001). The negative effect of gender on FFM was direct (SC = −0.523; p < 0.001), but there was an indirect negative effect via physical activity level (SC = −0.085; p < 0.001). Women were less active (p < 0.001). An increase of 0.5 kg (1 Standard Deviation, SD) in birth weight led to a gain of 0.25 kg/m2 (0.106 SD) in adolescent FFM index (p = 0.034). Not studying or working had a negative effect on the adolescent's FFM (SC = −0.106; p = 0.015). Elevation of 1 SD in the adolescent's physical activity level represented an increase of 0.5 kg/m2 (0.207 SD) in FFM index (p < 0.001). CONCLUSIONS: The early determinants with the greatest effects on adolescent FFM are gender, adolescent physical activity level, pregestational BMI, birth weight and belonging to the "neither-nor" generation.

Efetividade de um programa de prevenção e capacitação para redução de acidentes ocupacionais por material biológico / Effectiveness of a prevention and training program to reduce work accidents involving exposure to biological materials

Introdução: Os acidentes de trabalho com material biológico (ATMB) vêm aumentando significativamente no decorrer dos anos e suas consequências de maior importância epidemiológica são as transmissões de patógenos como os vírus da imunodeficiência humana e das hepatites B e C. Objetivo: Avaliar a efetividade de um programa de prevenção e capacitação para redução de acidentes ocupacionais por material biológico em hospital-escola a partir da incidência dos ATMB durante os oito anos de implementação do programa. Métodos: O presente estudo foi realizado de forma descritiva, retrospectiva, por coleta no banco de dados do Serviço de Tecnologia em Recursos Humanos de um hospital-escola. A população do estudo foi composta por 1.445 funcionários do hospital-escola que sofreram acidente ocupacional de exposição com material biológico do tipo perfurante ou cortante. Resultados: De um total de 1.445 acidentes de trabalho com instrumentos perfurantes ou cortantes, 47,5% foram por descarte inadequado de materiais potencialmente contaminados. Foi observada uma taxa de queda anual de 0,21% nos acidentes percutâneos e de 0,36% nos acidentes percutâneos por descarte inadequado. Conclusão: Os achados deste estudo indicam que o programa desenvolvido e implementado resultou na diminuição significativa dos acidentes ocupacionais por material biológico do tipo perfurocortante.

Background: The frequency of work accidents involving exposure to biological materials (WAEMB) is significantly increasing. The most relevant epidemiological consequences of this type of accidents are due to the transmission of pathogens including the human immunodeficiency and hepatitis B and C viruses. Objective: To assess the effectiveness of a prevention and training program to reduce the incidence of WAEMB at a teaching hospital along 8 years of implementation. Methods: Retrospective descriptive study based on data obtained from the hospital Human Resource Technology Department. We analyzed records of 1,445 hospital employees who suffered sharps injuries. Results: About 50% of the incidents were caused by inadequate sharps disposal. The overall rate of sharps injuries decreased by 0.21%/year and that of accidents due to inadequate sharps disposal by 0.36%. Conclusion: The results of the present study indicate that the implemented program was associated with significant reduction of the incidence of WAEMB.

Protocols for preparation of platelet rich plasma (PRP) in Quarter Horses / Protocolos para o preparo de plasma rico em plaquetas (PRP) em cavalos Quarto de Milha

This study compared two protocols for preparation of platelet rich plasma (PRP) and evaluated the association between manual and automated methods for platelet count using a prospective study design. Eight clinically healthy Quarter Horses had venous blood samples collected at rest. After collection, blood samples were centrifuged twice, using two different protocols including a period of sample resting, either at the start or at the end of the protocol. Platelet counting at the start of the protocol, during, and after obtaining PRP was conducted manually or with an automated counter, followed by comparison of the two methods. In order to investigate platelet degranulation during the protocol, vascular endothelial growth factor (VEGF) was measured at each preparation stage. The protocol with sample resting before centrifugation yielded a more concentrated PRP, and the study verified that both manual and automated methods are comparable and can be used interchangeably for platelet counting. VEGF concentration did not differ significantly between protocols, or among protocol stages. The results indicate that choice of protocol for PRP preparation will affect the quantity of platelets in the final product, although platelet degranulation was not observed as evidenced by the stable VEGF concentrations measured. A larger yield of non-degranulated platelets in PRP is desirable since more α-granules will be present, therefore Protocol II is recommended. Both manual and automated counts reliably allow clinicians to obtain platelet counts and the choice of utilizing a manual or automated method is unlikely to interfere with evaluation of the final PRP product.(AU)

Este estudo comparou dois protocolos de preparo de plasma rico em plaquetas (PRP) e avaliou a associação entre dois métodos de contagem plaquetária - um manual e o outro automático através de um estudo prospectivo. Sangue venoso de oito equinos da raça Quarto de Milha foi coletado e em seguida foi centrifugado duas vezes utilizando-se dois protocolos distintos: um com descanso antes da primeira centrifugação e outro após a segunda centrifugação. A contagem plaquetária ao início, no meio e ao final dos protocolos foi realizada manualmente e pelo método automatizado, seguida de comparação entre os dois métodos. Para investigar a degranulação plaquetária ocorrida durante o preparo do PRP, o fator de crescimento vascular endotelial (VEGF) foi mensurado em cada estágio dos protocolos. O método utilizando o descanso da amostra antes da primeira centrifugação proporcionou a obtenção de um PRP mais concentrado, além de o estudo verificar que ambos os métodos de contagem plaquetária (manual e automatizado) são comparáveis e podem ser usados indiferentemente. A concentração de VEGF não foi significativamente diferente entre os estágios de preparo do PRP. Os resultados indicam que o método de preparo afeta a quantidade de plaquetas obtidas no PRP, apesar da degranulação plaquetária não ter sido observada, como evidenciado pela concentração estável de VEGF. Uma maior concentração de plaquetas no PRP é desejável, pois indica que um maior número de α-grânulos estará presente na amostra, portanto, conclui-se que o Protocolo II é mais recomendável. Tanto o método manual, quanto o automatizado, pode ser usado de maneira confiável para a contagem plaquetária, não interferindo com a avaliação do produto final (PRP).(AU)

Eletrocauterização de verrugas venéreas: presença de bioaerossóis na fumaça cirúrgica / Eletrocauterization of venerealwarts: presence of bioaerosols in surgical smoke

Objective:to analyze the capacity of the bioaerosol retention filters with the use of a surgical smoke aspirator in procedures of cauterization of venereal warts. Method:field, descriptive, cross-sectional and quantitative research. The study was developedat a referral center for sexually transmitted infections in the northern state of Paraná, in the urology outpatient clinic. Data collection was collected from April to July 2016, with a sample obtained from 72 cauterization procedures. A descriptive statistical analysis was performed. Results:24 filters attached in two equipment, used to vacuum the smoke were analyzed. The conventional Polymerase Chain Reaction method was used to read the filters, using specific primers to search for Simple Herpes, HerpesZoster, Hepatitis C, Human Immunodeficiency Virus, Hepatitis B and Human Virus Papilloma. From the analyzed samples were found Viral Deoxyribonucleic Acid from Herpes Simplex, Hepatitis B and Human Virus Papilloma in the analyzed filters. Conclusion:the use of surgical vacuum aspiration equipment with Ultra-low Particulate Air filters during the cauterization of venereal warts was able to retain bioaerosols when the filter replacement time was respected.

Objetivo:analisar a capacidade dos filtros de retenção de bioaerossóis com o uso de aspirador de fumaça cirúrgica em procedimentos de cauterização de verrugas venéreas. Método: pesquisa de campo, descritiva, transversal e quantitativa. O estudo foi desenvolvido em um centro de referência para infecções sexualmente transmissíveis no Norte do estado do Paraná, no ambulatório de urologia. A coleta de dados foi realizada no período de abril a julho de 2016, com uma amostra obtida a partir de 72 procedimentosde cauterização. Realizou-se análise estatística descritiva. Resultados:foram analisados 24 filtros acoplados em dois equipamentos, utilizados para aspiração da fumaça. O método da Reação em Cadeia da Polimerase convencional foi utilizado para a leitura dos filtros, sendo utilizados primersespecíficos para a pesquisa de Herpes Simples, Herpes Zoster, Hepatite C, Vírus da Imunodeficiência Humana, Hepatite B e Papiloma Vírus Humano. A partir das amostras analisadas foram encontrados Ácido Desoxirribonucleico viral do Herpes Simples, Hepatite B e Papiloma Vírus Humano nos filtros analisados. Conclusão: O uso de um equipamento de aspiração de fumaça cirúrgica, com filtros Ultra-low Particulate Air, durante as cauterizações de verrugas venéreas mostrou-se capaz de reter bioaerossóis quando respeitado o tempo de troca dos filtros.

Research progress on early childhood caries / 口腔疾病防治

@#Caries is a multifactor dynamic infectious disease with bacteria as the main factor and can affect the development of both deciduous teeth and permanent teeth. According to the fourth national oral health epidemiological survey, the prevalence rate of early childhood caries (ECC) in 5-year-old children reached 70.9%, showing an upward trend. Understanding the etiology and epidemiological characteristics of ECC is of great significance in preventing the occurrence and development of ECC. This article reviews the epidemic status, etiology and related factors of ECC. The results of a literature review show that the prevalence of ECC in China is high and regional differences are large. The main related factors include biological factors, behavioral habits factors, social and economic factors, etc.

Tacrolimus for ulcerative colitis in children: a multicenter survey in Japan

BACKGROUND/AIMS: Tacrolimus is effective for refractory ulcerative colitis in adults, while data for children is sparse. We aimed to evaluate the effectiveness and safety of tacrolimus for induction and maintenance therapy in Japanese children with ulcerative colitis.METHODS: We retrospectively reviewed the multicenter survey data of 67 patients with ulcerative colitis aged < 17 years treated with tacrolimus between 2000 and 2012. Patients’ characteristics, disease activity, Pediatric Ulcerative Colitis Activity Index (PUCAI) score, initial oral tacrolimus dose, short-term (2-week) and long-term (1-year) outcomes, steroid-sparing effects, and adverse events were evaluated. Clinical remission was defined as a PUCAI score < 10; treatment response was defined as a PUCAI score reduction of ≥ 20 points compared with baseline.RESULTS: Patients included 35 boys and 32 girls (median [interquartile range] at admission: 13 [11–15] years). Thirty-nine patients were steroid-dependent and 26 were steroidrefractory; 20 had severe colitis and 43 had moderate colitis. The initial tacrolimus dose was 0.09 mg/kg/day (range, 0.05–0.12 mg/kg/day). The short-term clinical remission rate was 47.8%, and the clinical response rate was 37.3%. The mean prednisolone dose was reduced from 19.2 mg/day at tacrolimus initiation to 5.7 mg/day at week 8 (P< 0.001). The adverse event rate was 53.7%; 6 patients required discontinuation of tacrolimus therapy.CONCLUSIONS: Tacrolimus was a safe and effective second-line induction therapy for steroid-dependent and steroid-refractory ulcerative colitis in Japanese children.

Application of biological factor in cementum regeneration / 中华口腔医学杂志

At the present day, curettage and periodontal surgery comprise the main strategy for the treatment of periodontitis, however, these methods are limited in regenerating cementum. It has been found that some biological factors such asenamel matrix derivative (EMD), transforming growth factor-β (TGF-β) and insulin-like growth factor (IGF) could promote cementum regeneration. In the cementum regenerationstudies, there has been a lack of criteria to distinguish cementum from alveolar bone and other types of cementum. Therefore, this article will briefly review the biological factors that affect the cementum regeneration and the molecular markers used to judge the regenerating cementum.

Uso do tofacitinibe na retocolite ulcerativa refratária ao tratamento com anti-TNF e anti-integrina / Tofacitinib in the management of ulcerative colitis refractory to anti-tnf and anti-integrin therapies

ABSTRACT Janus kinases inhibitors have already been incorporated into the management of immune-mediated diseases, such as rheumatoid arthritis, and are being investigated for the treatment of psoriasis and inflammatory bowel diseases, both ulcerative colitis and Crohn's disease. Tofacitinib is an oral small-molecule drug that inhibits Janus kinases 1, Janus kinases 3, and, to a lesser extent, Janus kinases 2. This inhibition ends up blocking signals for several inflammatory cytokines that are involved in the pathogenesis of inflammatory bowel diseases and play a role in many immune signaling routes, including lymphocyte activation, function, and proliferation. We report a patient with active ulcerative colitis with primary non-response to three biologics (infliximab, adalimumab and vedolizumab), with different mechanisms of action, who refused surgical treatment and had a favorable response to tofacitinib with clinical and endoscopic remission. No adverse events were observed with the use of the agent. This case illustrates the difficulties we may face regarding the identification of the expression of proper mechanism of action involved in the pathogenesis of ulcerative colitis patients and the importance of having another treatment option with different mechanism of action, like tofacitinib.

RESUMO Os inibidores das Janus kinases (JAK) têm sido incorporados ao tratamento de doenças imunomediadas, como artrite reumatoide e, além disso, têm sido testados no tratamento da psoríase e doenças inflamatórias intestinais, tanto na retocolite ulcerativa quanto na doença de Crohn. Tofacitinibe é uma droga do grupo das pequenas moléculas de uso oral que inibe as Janus kinases 1 e 3 e, em menor grau, a Janus kinases 2. Esta inibição promove o bloqueio de uma série de citocinas pró-inflamatórias que estão envolvidas na patogênese das doenças inflamatórias intestinais e desempenham importante papel nos processos imunes, tais como ativação, função e proliferação linfocitária. Nesta presente comunicação, relatamos um caso de um paciente portador de retocolite ulcerativa refratária a três agentes biológicos (infliximabe, adalimumabe e vedolizumabe), com diferentes mecanismos de ação, que recusou o tratamento cirúrgico, porém, apresentou boa resposta com o uso de tofacitinibe, com remissão clínica e endoscópica. Não foram evidenciados efeitos colaterais com a droga. O presente caso ilustra as dificuldades que podemos enfrentar em relação à identificação da expressão do correto mecanismo de ação envolvido na patogênese dos pacientes com retocolite ulcerativa e a importância de um novo agente terapêutico com diferente mecanismo de ação, como o tofacitinibe.

A influência da periodontite no controle glicêmico do diabetes mellitus tipo 2: mecanismos biológicos / The Influence of Periodontitis on Glycemic Control of Type 2 Diabetes Mellitus: Biological Mechanisms

O diabetes mellitus (DM) é uma doença crônica que vem afetando um número cada vez maior de pessoas em todo o mundo. Caracteriza-se pela incapacidade do organismo de regular o processamento de glicose, sendo dividida em dois tipos principais: tipo 1 e tipo 2 (DM2), sendo este último o mais comum. A periodontite é uma doença resultante da interação complexa entre o biofilme bacteriano e a resposta imunoinflamatória do hospedeiro que leva à destruição dos tecidos de suporte dental. Evidências sugerem uma relação bidirecional entre estas doenças: o DM interfere no curso clínico da periodontite e a periodontite parece exercer influência sobre o DM. Para avaliar a influência da periodontite sobre o DM foi feita uma revisão de literatura abordando os principais mecanismos biológicos envolvidos. Foi constatado que a influência da periodontite sobre o controle glicêmico do DM2 baseia-se principalmente em mecanismos imunoinflamatórios. Na infecção periodontal, certas cepas bacterianas e seus produtos são capazes de ocasionar uma inflamação sistêmica crônica, com envolvimento de citocinas pró-inflamatórias, substâncias do estresse oxidativo e proteína C-reativa, o que resulta em resistência à insulina e, consequentemente, a um pobre controle glicêmico. Entretanto, estes mecanismos que implicam na resistência à insulina no DM2 ainda são pouco claros e estudos futuros ainda são necessários (AU)

Diabetes mellitus (DM) is a chronic disease that is affecting more and more people around the world. It is characterized by the body's inability to regulate the glucose processing, being divided into two main types: type 1 and type 2 (DM2), the latter being the most common. Periodontitis is a disease resulting from the complex interaction between the bacterial biofilm and the host immune-inflammatory response that leads to the destruction of the dental supporting tissues. Evidence suggests a bidirectional relationship between these diseases: DM interferes with the clinical course of periodontitis and periodontitis seems to exert influence on DM. In order to evaluate the influence of periodontitis on DM, a literature review was conducted addressing the main biological mechanisms involved. It was found that the influence of periodontitis on the glycemic control of DM2 is mainly based on immunoinflammatory mechanisms. During periodontal infection, certain bacterial strains and their products are capable of causing chronic systemic inflammation, involving proinflammatory cytokines, oxidative stress substances and C-reactive protein, leading to insulin resistance and, consequently, poor glycemic control. However, these mechanisms that imply insulin resistance in DM2 are still unclear and future studies are still needed. (AU)