Association between chronic kidney disease stages and changes in ambulatory blood pressure monitoring parameters / Associação entre estágios da doença renal crônica e alterações dos parâmetros da monitorização ambulatorial da pressão arterial

Abstract Introduction: Blood pressure (BP) assessment affects the management of arterial hypertension (AH) in chronic kidney disease (CKD). CKD patients have specific patterns of BP behavior during ambulatory blood pressure monitoring (ABPM). Objectives: The aim of the current study was to evaluate the associations between progressive stages of CKD and changes in ABPM. Methodology: This is a cross-sectional study with 851 patients treated in outpatient clinics of a university hospital who underwent ABPM examination from January 2004 to February 2012 in order to assess the presence and control of AH. The outcomes considered were the ABPM parameters. The variable of interest was CKD staging. Confounding factors included age, sex, body mass index, smoking, cause of CKD, and use of antihypertensive drugs. Results: Systolic BP (SBP) was associated with CKD stages 3b and 5, irrespective of confounding variables. Pulse pressure was only associated with stage 5. The SBP coefficient of variation was progressively associated with stages 3a, 4 and 5, while the diastolic blood pressure (DBP) coefficient of variation showed no association. SBP reduction was associated with stages 2, 4 and 5, and the decline in DBP with stages 4 and 5. Other ABPM parameters showed no association with CKD stages after adjustments. Conclusion: Advanced stages of CKD were associated with lower nocturnal dipping and greater variability in blood pressure.

Resumo Introdução: A avaliação da pressão arterial (PA) tem impacto no manejo da hipertensão arterial (HA) na doença renal crônica (DRC). O portador de DRC apresenta padrão específico de comportamento da PA ao longo da monitorização ambulatorial da pressão arterial (MAPA). Objetivos: O objetivo do corrente estudo é avaliar as associações entre os estágios progressivos da DRC e alterações da MAPA. Metodologia: Trata-se de um estudo transversal com 851 pacientes atendidos nos ambulatórios de um hospital universitário que foram submetidos ao exame de MAPA no período de janeiro de 2004 a fevereiro de 2012 para avaliar a presença e o controle da HA. Os desfechos considerados foram os parâmetros de MAPA. A variável de interesse foi o estadiamento da DRC. Foram considerados como fatores de confusão idade, sexo, índice de massa corporal, tabagismo, causa da DRC e uso de anti-hipertensivos. Resultados: A PA sistólica (PAS) se associou aos estágios 3b e 5 da DRC, independentemente das variáveis de confusão. Pressão de pulso se associou apenas ao estágio 5. O coeficiente de variação da PAS se associou progressivamente aos estágios 3a, 4 e 5, enquanto o coeficiente de variação da pressão arterial diastólica (PAD) não demonstrou associação. O descenso da PAS obteve associação com estágios 2, 4 e 5, e o descenso da PAD, com os 4 e 5. Demais parâmetros da MAPA não obtiveram associação com os estágios da DRC após os ajustes. Conclusão: Estágios mais avançados da DRC associaram-se a menor descenso noturno e a maior variabilidade da pressão arterial.

Barreras y facilitadores del acceso al tamizaje de cáncer colorrectal / Barriers and facilitators of colorectal cancer screening access

Resumen Introducción : El cáncer colorrectal (CCR) es un pro blema de salud a nivel global. En el sector público de Bahía Blanca, el tamizaje de CCR es oportunista, por solicitud de sangre oculta en materia fecal (SOMF). El objetivo de este trabajo es describir el acceso al tamiza je de CCR de la población con cobertura pública exclu siva que reside en el área programática 2 de la ciudad entre 2019 y 2021, y relevar las barreras y facilitadores que lo determinan. Métodos : Se estimó la tasa de uso anual y acumula da de SOMF. Las barreras y facilitadores se relevaron a través de 41 entrevistas individuales semi-estructuradas al personal de salud del área programática, el Hospital Municipal, Secretaría de Salud y usuarios/no usuarios del sistema. Resultados : La tasa acumulada de uso de SOMF en el período fue 4.8%. Entre las barreras al tamizaje per cibidas se destacan: la dificultad en el acceso a estudios de mayor complejidad para pacientes con SOMF+, el desconocimiento y falta de percepción del CCR como un problema de salud por parte de la población y la baja adherencia de los profesionales a los lineamientos. La territorialidad y el vínculo de los centros de salud con la población, y la predisposición de usuarios y profesio nales a incorporar el tamizaje surgen como facilitadores del mismo. Conclusiones : El relevamiento de las barreras orien tará el diseño de estrategias adaptadas al contexto que permitan en el futuro reforzar el tamizaje.

Abstract Introduction : Colorectal cancer (CRC) is a global health problem. In the public sector of Bahía Blanca, CRC screening is opportunistic, through the request of fecal occult blood test (FOBT). The objective of this study is to describe access to CRC screening for the population with exclusive public coverage residing in the program matic area 2 of the city between 2019 and 2021, and to identify the barriers and facilitators that determine it. Methods : The annual and cumulative usage rate was estimated based on the number of patients who requested FOBT. The barriers and facilitators were studied through 41 semi-structured individual inter views to healthcare staff from the area, the Municipal Hospital, Health Secretariat and users/non-users of the system. Results : The cumulative usage rate of FOBT during the period was less than 5%. Among the perceived bar riers to screening, we found: the difficulties in accessing more complex studies for patients with positive FOBT, the lack of population awareness and perception of CRC as a health problem, the low adherence of professionals to guidelines. The territoriality and link of health centers with the population, as well as the willingness of users and professionals to incorporate screening, emerge as facilitators. Conclusion : The identification of barriers and facilita tors will allow the design of context-adapted strategies that will strengthen screening in the future.

Una experiencia en la evaluación del Programa de Hipertensión Arterial basado en la Iniciativa HEARTS

Fundamento: la hipertensión se ha convertido en una de las condiciones de mayor prevalencia entre los adultos cubanos y en el principal factor de riesgo de morbilidad y de mortalidad por causas cardiovasculares. Objetivo: evaluar el impacto de la implementación del Programa de Hipertensión Arterial basado en la Iniciativa HEARTS en el Policlínico Comunitario Octavio de la Concepción y de la Pedraja en el municipio Cienfuegos. Métodos: se realizó un estudio descriptivo, de corte transversal en sistemas y servicios de salud desde el 2018 hasta el 2022. El universo fue la población mayor de 18 años y la muestra de 4 346 hipertensos. Se estudiaron las variables: sexo, control de hipertensión arterial, estructura tecnológica, índice de desempeño, índice de madurez y comportamiento de la mortalidad por enfermedades cardiovasculares. Resultados: el índice de desempeño de los Equipos Básicos de Salud fue excelente y el índice de madurez tuvo la categoría de avanzado. Se alcanzó el 85,5 % de cobertura diagnóstica y de registro, el 94,7 % de control entre tratados, un 39,5 % de control de los pacientes con alto riesgo cardiovascular y el 60,1 % de control poblacional. La mortalidad por enfermedades cardiovasculares para todas las edades en específico la mortalidad prematura disminuyó, con predominio del sexo masculino. Conclusiones: la implementación del programa de hipertensión arterial consolidó un sistema de trabajo para el perfeccionamiento de actuación en la Atención Primaria de Salud ante el paciente hipertenso. El uso de la política terapéutica estandarizada ha tenido impacto en el control de la presión arterial.

Foundation: hypertension has become one of the most prevalent conditions among Cuban adults and the main risk factor for morbidity and mortality due to cardiovascular causes. Objective: to evaluate the impact of the implementation of the Arterial Hypertension Program Based on the HEARTS Initiative in the Octavio de la Concepción y de la Pedraja Community Polyclinic in the Cienfuegos municipality. Methods: a descriptive, cross-sectional study was carried out in health systems and services from 2018 to 2022. The universe was the population over 18 years of age and the sample of 4,346 hypertensive patients. The variables were studied: sex, control of high blood pressure, technological structure, performance index, maturity index and mortality behavior due to cardiovascular diseases. Results: the performance index of the Basic Health Teams was excellent and the maturity index was in the advanced category. 85.5 % diagnostic and registration coverage were achieved, 94.7 % control among treated patients, 39.5 % control of patients with high cardiovascular risk and 60.1 % population control. Mortality from cardiovascular diseases for all ages, specifically premature mortality, decreased, with a predominance of the male sex. Conclusions: the implementation of the arterial hypertension program consolidated a work system for the improvement of action in Primary Health Care for hypertensive patients. The use of standardized therapeutic policy has had an impact on blood pressure control.

Red blood cell transfusions in preterm infants in 2021: a narrative review

Anemia is frequent in preterm infants. Red blood cell transfusion practices vary between different centers. The objective of this study was to review red blood cell transfusion practices in preterm infants between 2020 and 2021. This was a narrative review that included studies published on PubMed (Medline) and Web of Science between October 2020 and October 2021. Ten studies were included finally. Red blood cell transfusion frequency was variable. Some neonatal units did not report transfusion protocols. Most studies reported volumes of 10-15 ml/kg per transfusion. The implementation of an anemia care bundle and adoption of restrictive transfusion resulted in a reduction in the number of transfusions, the volume transfused, and a reduction in the rate of multiple transfusions. We suggest that neonatal units that care for preterm infants should have a transfusion protocol based on the best evidence available and this issue may improve.

Avaliação laboratorial do sangue e da saliva de pacientes com doença renal crônica e manifestações orais: uma Revisão Sistemática / Laboratory evaluation of blood and saliva of patients with chronic kidney disease and oral manifestations: a systematic review

A cavidade oral é afetada pelo caráter multissistêmico das consequências da Doença Renal Crônica (DRC) e estima-se que cerca de 90% destes pacientes têm sintomas orais. Alterações laboratoriais sanguíneas e salivares são frequentemente observadas e por isso, investigações sobre correlações clínico-laboratoriais são fundamentais para o manejo e tratamento dos pacientes. Neste estudo foi realizada uma revisão sistemática para identificar e avaliar as principais alterações laboratoriais no sangue e na saliva de pacientes portadores de DRC que apresentam manifestações orais. A busca bibliográfica incluiu artigos das bases de dados eletrônicas PubMed, Scopus, Biblioteca Virtual em Saúde, Web of Science, Embase e literatura cinzenta, incluindo estudos caso-controle, transversais e de coorte. A análise do risco de viés seguiu a abordagem QUADAS-2. PROSPERO CRD42022250533 é o registro dessa revisão. As principais alterações laboratoriais encontradas foram o aumento das concentrações sanguíneas e salivares de ureia, creatinina, fosfato e diminuição das concentrações de cálcio e da taxa de fluxo salivar. As concentrações dessas substâncias no sangue e na saliva e a TGF estavam diretamente correlacionadas. Foi observada existência da correlação entre o aparecimento das manifestações orais e as alterações laboratoriais, principalmente xerostomia, disgeusia e hálito urêmico. Em conclusão, a literatura tem revelado que as principais alterações laboratoriais encontradas são aquelas descritas comumente na rotina laboratorial, que as concentrações dessas substâncias no sangue e na saliva estão diretamente correlacionadas com a TFG, e existe correlação entre o aparecimento das manifestações orais e as alterações laboratoriais. Grandes oportunidades estão abertas para a investigação sobre de novos marcadores.

The oral cavity is affected by the multisystemic nature of the consequences of Chronic Kidney Disease (CKD) and it is estimated that around 90% of these patients present oral symptoms. Blood and salivary laboratory changes are frequently observed and, therefore, investigations of clinical-laboratory correlations are essential for the management and treatment of these patients. This study was carried out as a systematic review to identify and evaluate the main laboratory changes in the blood and saliva of patients with CKD who present oral manifestations. The bibliographic search included articles from the electronic databases PubMed, Scopus, Virtual Health Library, Web of Science, Embase and gray literature, including case-control, cross-sectional and cohort studies. The risk of bias analysis advanced the QUADAS-2 approach. PROSPERO CRD42022250533 is the record of this review. The main laboratory changes found were an increase in blood and salivary concentrations of urea, creatinine, phosphate and a decrease in calcium concentrations and salivary flow. The concentrations of substances in blood and saliva and TGF were directly correlated. The existence of the manifestation was observed between the appearance of oral manifestations and laboratory changes, mainly xerostomia, dysgeusia and uremic breath. In conclusion, the literature revealed that the main laboratory changes found are those commonly described in laboratory routine, that the concentrations of these problems in blood and saliva are directly correlated with GFR, and there is a manifestation between the appearance of oral manifestations and laboratory changes. . Great opportunities are open for the investigation of new markers.

Effects of school-based interventions on blood pressure in obese children: metanalysis / Efeitos de intervenções de base escolar na pressão arterial de crianças com obesidade: metanálise

Based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement (PRISMA), a systematic review with metanalysis was conducted to identify and summarize the effects of school-based physical activity interventions that sought to control and / or reduce blood pressure (systolic and diastolic) in children and / or adolescents with overweight and / or obesity. In September 2022, potential studies were searched in five electronic databases (Pubmed, Scielo, Scopus, Sportdiscus, and Web of Science) and in reference lists. Randomized controlled trials conducted in schools with interventions involving physical activity and assessment of systolic and diastolic blood pressure in children and adolescents aged 6 to 19 years with overweight and / or obesity were con-sidered for synthesis. The risk of bias was assessed using an adapted version of the Effective Public Health Practice Project tool (EPHPP). Metanalysis was developed from the random model. Four studies were included. For systolic blood pressure, a summary effect of -0.10 (95% CI: -0.39; 0.19; I2 = 0%) was observed. For diastolic pressure, the metanalysis indicated -0.33 (95% CI: -0.62; -0.04; I2 = 11%). Considering the promising effects on diastolic blood pressure, we suggest the develop-ment of more school-based interventions based on physical activity practice for overweight and / or obese populations, which may also add environmental elements, longer duration, multicomponent approaches, and parent / guardian involvement to their strategies.

Com base na declaração Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), foi realizada uma revisão sistemática com metanálise para identificar e sumarizar os efeitos de intervenções escolar baseadas na atividade física que buscaram o controle e / ou redução da pressão arterial (sistólica e diastólica) em crianças e / ou adolescentes com excesso de peso e / ou obesidade. Em setembro de 2022, estudos potenciais foram pesquisados em cinco bases de dados eletrônicas (Pubmed, Scielo, Scopus, Sportdiscus, e Web of Science) e em listas de referências. Foram considerados para a síntese ensaios controlados randomizados realizados em escolas, com intervenções que envolviam a atividade física e avaliação da pressão arterial sistólica e diastólica em crianças e adolescentes dos 6 aos 19 anos com excesso de peso e/ ou obesidade. O risco de viés foi avaliado utilizando uma versão adaptada do instrumento Effective Public Health Practice Project (EPHPP). A metanálise foi elaborada a partir do modelo randômico. Foram incluídos quatro estudos. Para a pressão arterial sistólica, observou-se um efeito sumarizado de -0,10 (IC 95%: -0,39; 0,19; I2 = 0%). Para a pressão diastólica, a metanálise indicou -0,33 (IC 95%: -0,62; -0,04; I2 = 11%). Considerando os efeitos promissores na pressão arterial diastólica, sugerimos o desenvolvimento de mais intervenções escola-res fundamentadas na prática de atividade física às populações com sobrepeso e / ou obesidade, que possam agregar também, em suas estratégias, elementos ambientais, maior duração, abordagens multicomponentes e envolvimento dos pais / responsáveis.

Effects of endurance training combined with blood flow restriction on functionality in older adults: a systematic review / Efeitos do treinamento de resistência combinado com restrição de fluxo sanguíneo na funcionalidade de idosos: uma revisão sistemática

The aim of this review was to verify the effects of aerobic exercise combined with blood flow restriction on older adult functionality. Systematic searches were performed in PubMed, Web of Science, and Embase between July and December 2023. Randomized studies with participants aged ≥ 60 years who were evaluated before and after the experimental protocols were included. We registered this systematic review at the International Prospective Register (PROSPERO CRD42022347205). The search strategy identified 2698 studies, four of which were included in the review, with 80 participants. The results suggested that aerobic exercise combined with blood flow restriction increased performance on specific functional tests. However, these results should be interpreted with caution due to the low-to-moderate study quality, as well as the low number of participants and studies. In conclusion, aerobic exercise and blood flow restriction may increase functional capacity in older adults. Further studies are needed to confirm such findings. (AU)

Listeria monocytogenesy mecanismo de caballo de Troya a través de la barrera hematoencefálica / isteria monocytogenesand Trojan horse mechanism across the blood-brain barrier

Las infecciones del sistema nervioso central son potencialmente mortales, causadas por patógenos, como bacterias, virus y hongos. Para llegar hasta el cerebro, los microorganismos utilizan diversas vías y formas. Este patogeno es una bacteria grampositiva corta, flagelar e intracelular, con la capacidad de inducir su internalización en células fagocíticas (monocitos/macrófagos) y no fagocíticas (células endoteliales). Al infectar los macrófagos, estos microorganismos se valen de su capacidad de fijación, adhesión y migración transendotelial, para cruzar la barrera hematoencefálica, finalmente, generando meningitis bacteriana. En esta revisión describimos el mecanismo de caballo de Troya usado por Listeria monocytogenespara invadir el cerebro en el desarrollo de enfermedades infecciosas e incorporamos nuevos conocimientos sobre moléculas que intervienen en dicho mecanismo(AU)

Central nervous system infections are life-threatening, caused by pathogens such as bacteria, viruses and fungi. To access the brain, microorganisms use various mechanisms. Listeria monocytogenes is a short, flagellar and intracellular gram-positive bacterium, with the ability to induce its internalization in phagocytic (monocytes/macrophages) and non-phagocytic (endothelial cells) cells. By infecting macrophages, these microorganisms take advantage of their binding, adhesion, and transendothelial migrationcapacity to cross the blood-brain barrier, finally generating bacterial meningitis. In this review we describe the Trojan horse mechanism used by Listeria monocytogenesto invade the brain in the development of infectious diseases and we incorporate new knowledge about molecules that intervene in this mechanism(AU)

Número de células CD34+ circulantes como predictor de recolección exitosa de progenitores hematopoyéticos por aféresis en trasplante autólogo / Number of circulating CD34+ cells as a predictor of successful collection of hematopoietic progenitors by apheresis in autologous transplantation

RESUMEN Introducción. El trasplante autólogo de células progenitoras hematopoyéticas es una terapia eficaz en neoplasias malignas hematológicas. El número de células que CD34+ en sangre periférica es el mejor predictor del rendimiento de recolección de células progenitoras hematopoyéticas. Objetivo. Determinar el número de células CD34+ en sangre periférica asociado al éxito de recolección de progenitores hematopoyéticos por aféresis en trasplante autólogo. Métodos. Se evaluó retrospectivamente los datos de 236 procedimientos de aféresis de células progenitoras hematopoyéticas para el trasplante autólogo en el Hospital Edgardo Rebagliati Martins (Lima, Perú) de julio del 2020 a julio del 2023. Se utilizó la curva ROC (características operativas del receptor) para determinar el número de células CD34+ en sangre periférica necesario para lograr una recolección por aféresis ≥ 2 x 106 células CD34+/kg. Resultados. El 61% fueron hombres, con mediana de edad de 58 años, el valor de corte fue de 18,38 células CD34+/μL (sensibilidad de 94,1% y especificidad de 96,9%). Conclusión. El número de células CD34+ sangre periférica para una recolección exitosa de células progenitoras hematopoyéticas para el trasplante autólogo fue de 18,38 células CD34+/μL.

ABSTRACT Introduction. Autologous hematopoietic progenitor cell transplantation is an effective therapy in hematological malignancies, the number of CD34+ cells in peripheral blood is the best predictor of hematopoietic progenitor cell harvesting performance. Objective. To determine the number of CD34+ cells in peripheral blood associated with the successful collection of hematopoietic progenitors by apheresis in autologous transplantation. Methods. The data of 236 hematopoietic progenitor cell apheresis procedures for autologous transplantation at the Edgardo Rebagliati Martins Hospital (Lima, Peru) were retrospectively evaluated from July 2020 to July 2023. The ROC (receiver operating characteristics) curve was used to determine the number of CD34+ cells in peripheral blood necessary to achieve an collection by apheresis ≥ 2 x 106 CD34+ cells/kg. Results. 61% were men, with a median age of 58 years, the cut-off value was 18.38 CD34+ cells/μL (sensitivity of 94.1% and specificity of 96.9%). Conclusion. The number of peripheral blood CD34+cells for successful collection of hematopoietic progenitor cells for autologous transplantation was 18.38 CD34+ cells/μL.

Immunothrombosis and its underlying biological mechanisms

Abstract The evolutionary conserved link between coagulation and innate immunity is a biological process characterized by the thrombosis formation stimulus of immune cells and specific thrombosis-related molecules. In physiological settings, the relationship between the immune system and thrombosis facilitates the recognition of pathogens and damaged cells and inhibits pathogen proliferation. However, when deregulated, the interplay between hemostasis and innate immunity becomes a pathological process named immunothrombosis, which is at the basis of several infectious and inflammation-related thrombotic disorders, including coronavirus disease 2019 (COVID-19). In advanced stages, alterations in both coagulation and immune cell function due to extreme inflammation lead to an increase in blood coagulability, with high rates of thrombosis and mortality. Therefore, understanding underlying mechanisms in immunothrombosis has become decisive for the development of more efficient therapies to treat and prevent thrombosis in COVID-19 and in other thrombotic disorders. In this review, we outline the existing knowledge on the molecular and cellular processes involved in immunothrombosis, focusing on the role of neutrophil extracellular traps (NETs), platelets and the coagulation pathway. We also describe how the deregulation of hemostasis is associated with pathological conditions and can significantly aggravate a patient's condition, using COVID-19 as a clinical model.

Hemograms and serial hemogram-derived ratios in survivors and non-survivors of COVID-19 in Campinas, Brazil

Introduction The hemogram and hemogram-derivative ratios (HDRs) are becoming markers of the severity and mortality of COVID-19. We evaluated the hemograms and serial weekly HDRs [neutrophil-lymphocyte ratio (NLR), monocyte-lymphocyte ratio (MLR), platelet-lymphocyte ratio (PLR), neutrophil-platelet ratio (NPR) and systemic immune-inflammatory index (SII)] in the survivors and non-survivors of COVID-19. Methods We retrospectively reviewed the medical notes and serial hemograms of real-time reverse-transcription polymerase chain reaction (RT-PCR)-confirmed COVID-19 adults hospitalized from April 2020 to March 2021 from the time of diagnosis to the 3rd week of diagnosis. Results Of the 320 adults, 257 (80.3%) were survivors and had a lower mean age than the non-survivors (57.73 vs. 64.65 years, p < 0.001). At diagnosis, the non-survivors had lower hematocrit (p = 0.021), and lymphocyte (p = 0.002) and basophil (p = 0.049) counts and the hematocrit showed a p-value (Is this what you meant???) of 0.021); higher NLR (p < 0.001), PLR (p = 0.047), NPR (p = 0.022) and SII (p = 0.022). Using general linear models, the survivors and non-survivors showed significant variations with weekly lymphocyte count (p < 0.001), neutrophil count (p = 0.005), NLR (p = 0.009), MLR (p = 0.010) and PLR (p = 0.035). All HDRs remained higher in the non-survivors in the 2nd week and 3rd week of diagnosis and the HDRs were higher in the intubated patients than in the non-intubated patients. The NLR and SII were more efficient predictors of mortality in COVID-19 patients. Conclusions This study shows that serial lymphocyte and neutrophil counts, NLR, PLR, MLR, NPR and SII could serve as good and easily accessible markers of severity and predictors of outcomes in COVID-19 patients and should be used for the monitoring of treatment response.

Fibrina rica en plaquetas como parte de la regeneración tisular en procedimientos quirúrgicos odontológicos / Platelet-rich fibrin as part of tissue regeneration in dental surgical procedures

Uno de los mejores biomateriales usados en odontología es la fibrina rica en plaquetas (PRF), es un concentrado plaquetario de segunda generación que se obtiene a partir de la centrifugación de sangre autóloga y no necesita aditivos. El presente documento busca determinar la eficacia del uso del PRF como parte de la regeneración de tejidos en procedimientos quirúrgicos odontológicos, tomando como base la literatura publicada en PubMed, Elsevier y Semantic Scholar entre 2018 y 2023, la búsqueda de artículos científicos fue ejecutada empleando las palabras clave platalet rich fibrin, regeneration, dentistry, blood buffy coat. La evidencia científica muestra que el PRF puede ser usado en su forma de membrana, gel, tapón, solo o combinado con otro biomaterial para conseguir propiedades biológicas exclusivas que promueven la regeneración y cicatrización mientras reduce los efectos adversos de los procedimientos quirúrgicos. Un ensayo clínico refirió la curación de alvéolos post exodoncia atraumática, y comprobó que la cicatrización con PRF muestra un índice de curación más alto en comparación con el grupo control. El sustento biológico de su eficacia radica en su capacidad para proliferar células que promueven la angiogénesis, osteogénesis y diferenciación celular, es decir, el reparo de tejidos lesionados. Todo esto nos permite llegar a la conclusión de que el PRF representa una alternativa viable y eficaz en procesos de regeneración de tejidos en procedimientos quirúrgicos odontológicos.

One of the best biomaterials used in dentistry is platelet-rich fibrin (PRF). It is a second-generation platelet concentrate obtained by centrifugation of autologous blood and requires no additives. The aim of this article is to determine the effectiveness of using PRF for tissue regeneration in dental surgery. The methodology used consists of a descriptive search of scientific articles that employ or study PRF as a biomaterial for tissue healing in the dental field and are available on PubMed, Elsevier, and Semantic Scholar. The literature shows that PRF can be used as a membrane, gel, cap form, alone or combined with other biomaterials to achieve unique biological properties that promote regeneration and healing while reducing the adverse effects of surgical procedures. For example, a clinical trial demonstrated healing of post-traumatic alveolar exodontia, proving that healing with PRF had a higher healing rate than in the control group. The biological basis of PRF's efficacy lies in its ability to proliferate cells that promote angiogenesis, osteogenesis, and cellular differentiation, and thus repair damaged tissue. All this leads us to conclude that PRF represents a viable and effective alternative in tissue regeneration processes in dental surgery procedures.

Asociación entre factores de riesgo modificables e hipertensión arterial en adolescentes de Moa

Fundamento: La hipertensión arterial en adolescentes se relaciona estadísticamente con factores de riesgo modificables que influyen en la aparición y evolución de la enfermedad. Objetivo: medir el grado de asociación entre factores de riesgo modificables y las cifras de tensión arterial en adolescentes de Moa, Holguín. Método: Se realizó un estudio observacional, longitudinal, prospectivo de corte transversal en el periodo comprendido entre septiembre-diciembre 2022. El universo lo constituyeron los 1561 adolescente de 15-19 años de edad y la muestra 524 (33,56 %). Se realizó un muestreo probabilístico sistemático. Se analizaron como variables: índice de masa corporal, índice de circunferencia abdominal, sueño nocturno, horas de actividad sedentaria y frecuencia semanal de comida chatarra. Se utilizaron los estadígrafos: frecuencia absoluta y porcentaje y las pruebas estadísticas; Chi cuadrado (p 97 pp eran hipertensos y el 37,21 % prehipertensos, X2p=167,1976 > X2c=20,0902, (VC=0,3646). El 40,00 % de los que tenían ICA > 97 pp fueron diagnosticados con HTA y el 40,00 % prehipertensión, X2p=239,6183 > X2c=20,0902, V de Cramer (VC=0,4366). El 14,14 % de los que dormían 6 horas o menos fueron estratificados como hipertensos, X2p=54,1834 > X2c=13,2767 (VC=0,2076). Los adolescentes que dedicaban más de seis horas diarias a actividades sedentarias (10,63 %) padecían hipertensión y prehipertensión (11,88 %), X2p=14,1081 > X2c=13,2767 (VC=0,1059). El 14,22 % ingerían comida chatarra con una frecuencia igual o superior a seis veces por semana y eran hipertensos, X2p=29,8662 > X2c=13,2767 (VC=0,1541). Conclusiones: Existió asociación moderada entre el índice masa corporal, el índice de circunferencia abdominal y la tensión arterial. La asociación entre horas de sueño nocturno, horas diarias de actividad sedentaria y frecuencia semanal de comida chatarra con las cifras de tensión arterial.

Foundation: High blood pressure in adolescents is statistically related to modifiable risk factors that influence the onset and evolution of the disease. Objective: Measure the degree of association between modifiable risk factors and blood pressure levels in adolescents from Moa, Holguín. Methods: An observational, prospective longitudinal cross-sectional study was carried out in the period between September-December 2022. The universe consisted of 1,561 adolescents aged 15-19-years and the sample was 524 (33.56%). A systematic probabilistic sampling was carried out. The following variables were analyzed: body mass index, abdominal circumference index, night sleep, hours of sedentary activity and weekly frequency of junk food. Statisticians were used: absolute frequency and percentage and statistical tests; Chi square (p 97pp were hypertensive and 37.21% were prehypertensive, X2p=167.1976 > X2c=20.0902, (VC=0.3646). 40.00% of those with ICA > 97pp were diagnosed with HTN and 40.00% with prehypertension, X2p=239.6183 > X2c=20.0902, Cramer's V (VC=0.4366). 14.14% of those who slept 6 hours or less were stratified as hypertensive, X2p=54.1834 > X2c=13.2767 (VC=0.2076). Adolescents who spent more than six hours a day in sedentary activities (10.63%) suffered from hypertension and prehypertension (11.88%), X2p=14.1081> X2c=13.2767 (VC=0.1059). 14.22% ate junk food with a frequency equal to or greater than six times a week and were hypertensive, X2p=29.8662 > X2c=13.2767 (VC=0.1541). Conclusions: There was a moderate association between body mass index, abdominal circumference index and blood pressure. The association between hours of night sleep, daily hours of sedentary activity and weekly frequency of junk food with blood pressure figures.

Correlation analysis between peripheral blood dendritic cell subsets and PD-1 in patients with peritoneal adenocarcinoma

Abstract The aim of this study was to explore the association between differential percentages of dendritic cell (DC) subsets in peripheral blood and malignancy (grade and lymph node metastasis) of peritoneal adenocarcinoma patients and the frequencies of dendritic cell subsets in the normal controls. The peripheral blood of 30 patients with peritoneal adenocarcinoma and 12 healthy controls were collected for multicolor flow cytometry analysis. Peritoneal adenocarcinoma patients were grouped according to the malignant degree (grade and lymph node metastasis). Percentages of myeloid DCs (mDCs) and its subsets MDC1 and MDC2 in DCs were lower in peripheral blood of patients with peritoneal adenocarcinoma than in normal controls. The percentages of plasmacytoid dendritic cells (pDCs) and CD16+mDCs in DCs were higher than in normal controls. Compared with poor differentiation grade, patients with well/moderate differentiation grade had an increased percentage of CD16+mDCs. Contrary to CD16+mDCs, the percentage of MDC1 was lower in the well/moderate differentiation grade group. In patients with no lymph node metastasis, pDCs and CD16+mDCs levels were higher compared with patients with lymph node metastasis. mDCs and MDC1 levels had opposite results. pDCs were positively correlated with CD16+mDCs in peripheral blood of peritoneal patients, as was mDCs and MDC1. CD16+mDCs were negatively correlated with MDC1. The percentages of pDCs and CD16+mDCs in DCs were positively correlated with CD3+CD8+T cells, and pDCs also positively correlated with CD8+PD-1+T cells. Our results revealed that DCs subsets correlated with peritoneal adenocarcinoma malignancy. Dendritic cells play an independent role in the immune function of peritoneal adenocarcinoma.

Influencia del antecedente de intervención coronaria percutánea sobre los desenlaces angiográficos y clínicos en pacientes con infarto agudo de miocardio con elevación del segmento ST / Impact of previous percutaneous coronary intervention on angiographic and clinical outcomes in patients with ST-segment elevation myocardial infarction

Resumen Antecedentes: El pronóstico de los pacientes con infarto agudo de miocardio con elevación del segmento ST (IAMCEST) y antecedente de intervención coronaria percutánea (ICP) es incierto. Objetivos: Evaluar si la ICP previa en pacientes con IAMCEST incrementa el riesgo de eventos cardiovasculares mayores y si el flujo final epicárdico varía según la estrategia de reperfusión. Material y métodos: Subestudio de PHASE-MX, observacional, longitudinal y comparativo, de pacientes con IAMCEST reperfundidos en menos de 12 horas de iniciados los síntomas, divididos conforme el antecedente de ICP. El acaecimiento del criterio de valoración principal (muerte cardiovascular, reinfarto, insuficiencia cardíaca y choque cardiogénico) dentro de los 30 días se comparó con estimaciones de Kaplan-Meier, prueba de rangos logarítmicos y modelo de riesgos proporcionales de Cox. El flujo epicárdico final se evaluó con el sistema de clasificación del flujo TIMI después de la reperfusión. Resultados: Se incluyeron 935 pacientes, 85.6 % del sexo masculino, 6.9 % de los cuales tenía antecedente de ICP; 53 % recibió terapia farmacoinvasiva y 47 %, ICP primaria. La incidencia del criterio de valoración principal en pacientes con ICP previa fue de 9.8 % versus 13.3 % en aquellos sin ese antecedente (p = 0.06); 87.1 % de los pacientes con ICP previa obtuvo flujo final de grado TIMI 3 versus 75 % del grupo con estrategia farmacoinvasiva (p = 0.235). Conclusiones: El antecedente de ICP no incrementa el riesgo de eventos cardiovasculares mayores a los 30 días en pacientes con IAMCEST; sin embargo, impacta negativamente en el flujo sanguíneo angiográfico final de los pacientes que recibieron terapia farmacoinvasiva (en comparación con ICP primaria).

Abstract Background: The prognosis of patients with ST-segment elevation myocardial infarction (STEMI) and previous percutaneous coronary intervention (PCI) is uncertain. Objectives: To evaluate if previous PCI in patients with STEMI increases the risk of major cardiovascular events, and if final epicardial blood flow differs according to the reperfusion strategy. Material and methods: Observational, longitudinal, comparative sub-study of the PHASE-MX trial that included patients with STEMI and reperfusion within 12 hours of symptom onset, who were divided according to their history of PCI. The occurrence of the composite primary endpoint (cardiovascular death, re-infarction, congestive heart failure and cardiogenic shock) within 30 days was evaluated using Kaplan-Meier estimates, log-rank test and Cox proportional hazards model. Final epicardial blood flow was assessed using the TIMI grading system after reperfusion. Results: A total of 935 patients were included; 85.6% were males, and 6.9% had a history of PCI; 53% underwent pharmacoinvasive therapy, and 47%, primary PCI. The incidence of the composite primary endpoint at 30 days in patients with a history of PCI was 9.8% vs. 13.3% in those with no previous PCI (p = 0.06). Among the patients with previous PCI, 87.1% reached a final TIMI grade 3 flow after primary PCI vs. 75% in the group with pharmacoinvasive strategy (p = 0.235). Conclusions: A history of PCI does not increase the risk of major cardiovascular events at 30 days; however, it impacted negatively on the final angiographic blood flow of patients that received pharmacoinvasive therapy (compared to primary PCI).

Importancia de las determinaciones inmunohematológicas en el control prenatal de gestantes con grupo sanguíneo RhD negativo

La guía para la atención prenatal es el marco regulatorio de las normas de obstetricia para el control y cuidado de las gestantes, con énfasis en aquellas que poseen el grupo sanguíneo RhD negativo. La aloinmunización por anti-D es la causa más frecuente y grave de la enfermedad hemolítica del recién nacido. Para un diagnóstico temprano de la embarazada con dicho grupo sanguíneo, resulta necesario determinar los anticuerpos antieritrocitarios involucrados. En la presente comunicación se resalta la función del laboratorio de inmunohematología en el seguimiento de la gestante con grupo de sangre RhD negativo.

The guide for prenatal care is the regulatory mark of obstetrics norms for the control and care of pregnant women, with emphasis on those who have the RhD negative blood group. Alloimmunization by anti-D is the most frequent and serious cause of hemolytic disease of the newborn. For an early diagnosis of the pregnant woman with said blood group, it is necessary to determine the red blood cell antibodies involved. This communication highlights the role of the immunohematology laboratory in the follow-up of pregnant woman with RhD negative blood type.

Umbral crítico de administración en pacientes con trauma severo y reanimación endovascular: ¿Un concepto útil? / Critical Administration Threshold in severe trauma patients and endovascular resuscitation: A useful concept?

Introducción. Se describe la utilidad del umbral crítico de administración (CAT por su denominación en inglés) como herramienta para la reanimación hemostática en pacientes con trauma severo y oclusión endovascular aórtica. Métodos. Revisión retrospectiva de pacientes adultos con hemorragia por trauma, con o sin oclusión endovascular aórtica (REBOA), atendidos entre enero de 2015 y junio de 2020, en un centro de trauma nivel I en Cali, Colombia. Se registraron variables demográficas, severidad del trauma, estado clínico, requerimiento transfusional, tiempo hasta CAT+ y CAT alcanzado (1, 2 ó 3). Resultados. Se incluyeron 93 pacientes, se utilizó REBOA en 36 y manejo tradicional en 57. El grupo REBOA presentó mayor volumen de sangrado (mediana de 3000 ml, RIC: 1950-3625 ml) frente al grupo control (mediana de1500 ml, RIC: 700-2975ml) (p<0,001) y mayor cantidad de glóbulos rojos transfundidos en las primeras 6 horas (mediana de 5, RIC:4-9); p=0,015 y en las primeras 24 horas (mediana de 6, RIC: 4-11); p=0,005. No hubo diferencias estadísticamente significativas en número de pacientes CAT+ entre grupos o tiempo hasta alcanzarlo. Sin embargo, el estado CAT+ durante los primeros 30 minutos de la cirugía fue mayor en grupo REBOA (24/36, 66,7 %) frente al grupo control (17/57, 29,8 %; p=0,001), teniendo este mayor tasa de mortalidad intrahospitalaria frente a los pacientes CAT-. Conclusión. El umbral crítico de administración es una herramienta útil en la reanimación hemostática de pacientes con trauma y REBOA, que podría predecir mortalidad precoz.

Introduction. The objective is to describe the utility of the Critical Administration Threshold (CAT) as a tool in hemostatic resuscitation in patients with severe trauma and REBOA. Methods. Retrospective review between January 2015 and June 2020 of adult patients with hemorrhage secondary to trauma with or without REBOA in a level I trauma center in Cali, Colombia. Demographic variables, trauma severity, clinical status, transfusion needs, time to CAT+ and number of CAT achieved (1, 2 or 3) were recorded. Results. Ninety-three patients were included, in which REBOA was used in 36 and traditional management in 57. The REBOA group had a higher bleeding volume (3000 ml), IQR: 1950-3625 ml vs the control group (1500 ml, IQR: 700-2975 ml) (p<0.001) and a higher rate of PRBC units transfused in the first 6 hours (median 5, IQR: 4-9); p=0.015 and in the first 24 hours (median 6, IQR: 4-11); p=0.005. There were no statistically significant differences in the number of CAT+ patients between groups or time to CAT+. However, CAT+ status during the first 30 minutes of surgery was higher in the REBOA Group (24/36, 66.7%) vs. the control group (17/57, 29.8%; p=0.001), having this group a higher in-hospital mortality rate vs. CAT- patients. Conclusion. CAT is a useful tool in the hemostatic resuscitation of patients with trauma and REBOA that could predict early mortality.

Transcriptome Sequencing on Treatment of Kidney Deficiency and Blood Stasis-thin Endometrium in Rats with Bushen Huoxue Prescription Through Enema / 中国实验方剂学杂志

ObjectiveTo explore the mechanism of Bushen Huoxue enema in treating the rat model of kidney deficiency and blood stasis-thin endometrium （KDBS-TE） by transcriptome sequencing. MethodThe rat model of KDBS-TE was established by administration of tripterygium polyglycosides tablets combined with subcutaneous injection of adrenaline. The pathological changes of rat endometrium in each group were then observed. Three uterine tissue specimens from each of the blank group， model group， and Bushen Huoxue enema group were randomly selected for transcriptome sequencing. The differentially expressed circRNAs， lncRNAs， and miRNAs were screened， and the disease-related specific competitive endogenous RNA （ceRNA） regulatory network was constructed. Furthermore， the gene ontology （GO） functional annotation and the Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment were performed for the mRNAs in the network. ResultCompared with the blank group， the model group showed endometrial dysplasia， decreased endometrial thickness and endometrial/total uterine wall thickness ratio （P<0.01）， and differential expression of 18 circRNAs， 410 lncRNAs， and 7 miRNAs. Compared with the model group， the enema and estradiol valerate groups showed improved endometrial morphology and increased endometrial thickness and ratio of endometrial to total uterine wall thickness （P<0.05）. In addition， 21 circRNAs， 518 lncRNAs， and 17 miRNAs were differentially expressed in the enema group. The disease-related specific circRNA-miRNA-mRNA regulatory network composed of 629 nodes and 664 edges contained 2 circRNAs， 34 miRNAs， and 593 mRNAs. The lncRNA-miRNA-mRNA regulatory network composed of 180 nodes and 212 edges contained 5 lncRNAs， 10 miRNAs， and 164 mRNAs. The mNRAs were mainly enriched in Hippo signaling pathway， autophagy-animal， axon guidance， etc. ConclusionBushen Huoxue enema can treat KDBS-TE in rats by regulating specific circRNAs， lncRNAs， and miRNAs in the uterus and the ceRNA network.

Influencing factors of telangiectasia secondary to diabetic retinopathy / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To investigate the influencing factors of abnormal telangiectasia secondary to diabetic retinopathy(DR).METHODS: Prospective studies. A total of 153 cases(240 eyes)with DR treated in our hospital from January 2021 to January 2023 were selected to analyze the risk factors of abnormal telangiectasia secondary to DR and its predictive efficacy.RESULTS: The patients were divided into dilated group(77 eyes of 40 cases)and non-dilated group(163 eyes of 113 cases)according to whether they had secondary abnormal telangiectasia. There were significant differences in diabetic macular edema, hard exudates grade and fasting blood glucose level between the two groups(P&#x0026;#x003C;0.05). Logistic regression analysis showed that diabetic macular edema, high hard exudates grade and high blood glucose level were the risk factors for abnormal telangiectasia secondary to DR(P&#x0026;#x003C;0.05).CONCLUSION: The occurrence of telangiectasia secondary to DR may be related to diabetic macular edema, grade 3 hard exudates and high blood glucose level.