Resumen Los trabajadores agrícolas se exponen frecuentemente a los pesticidas, los cuales pueden afectar el sistema cardiovascular. El objetivo de la investigación fue revisar la asociación entre la exposición ocupacional a pesticidas, el desarrollo de enfermedades cardiovasculares y los biomarcadores utilizados en la vigilancia de la salud de los trabajadores. Para ello se realizó una revisión no sistemática de la literatura en tres bases de datos: Pubmed, Embase y Scopus, con ecuaciones de búsqueda elaboradas con los términos “agrochemicals”, “myocardial infarction”, “occupational exposure” y “farmers", y se incluyeron artículos publicados entre 2007 y 2022. Se encontró que los pesticidas causan elevación de las cifras de presión arterial en trabajadores expuestos y en mujeres embarazadas se relaciona con hipertensión gestacional y preeclampsia. Respecto al infarto agudo de miocardio (IAM), el contacto con los pesticidas clorpirifós, coumafós, carbofurano, pendimetalina, trifluralina y acilalanina aumentan el riesgo de IAM en mujeres, y entre los trabajadores masculinos la exposición a dibromuro de etileno, maneb/mancozeb y dimetil-ditiocarbamato de zinc se asoció con mayor mortalidad. La vigilancia epidemiológica se realiza principalmente con la medición de la actividad de la acetilcolinesterasa eritrocitaria (AChE). Se puede concluir que la exposición a pesticidas puede desencadenar enfermedades cardiovasculares agudas y crónicas, como elevación de las cifras de presión arterial, IAM fatal y no fatal. Los pesticidas dimetil ditiocarbamato de zinc, clorpirifós, coumafós, carbofurano, paratión y malatión son las sustancias que tienen mayor relación con el desarrollo de enfermedad cardiovascular.

Abstract Farmworkers are frequently exposed to pesticides, which can affect the cardiovascular system. The objective of the research was to review the association between occupational exposure to pesticides and the development of cardiovascular diseases, and the biomarkers used in monitoring the health of workers. For this, a non-systematic review of the literature was carried out in three databases: Pubmed, Embase and Scopus, with search equations prepared with the terms "agrochemicals", "myocardial infarction", "occupational exposure" and "farmers". Articles published between 2007 and 2022 were included. Pesticides were found to cause elevated blood pressure levels in exposed workers, and in pregnant women it is related to gestational hypertension and preeclampsia. Regarding acute myocardial infarction (AMI), contact the pesticides chlorpyrifos, coumaphos, carbofuran, pendimethalin, trifluralin, and acylalanine increased the risk of AMI in women, and among male workers exposure to ethylene dibromide, maneb/mancozeb, and zinc dimethyldithiocarbamate was associated with increased mortality. Epidemiological surveillance is mainly carried out by measuring erythrocyte acetylcholinesterase (AChE) activity. It can be concluded that exposure to pesticides can trigger acute and chronic cardiovascular diseases, such as elevated blood pressure, fatal and non-fatal AMI. Zinc dimethyl dithiocarbamate, chlorpyrifos, coumafos, carbofuran, parathion and malathion pesticides are the substances most closely related to the development of cardiovascular disease.

BACKGROUND. South Africa (SA) has the highest prevalence of people with tuberculosis (TB) and HIV coinfection globally. People living with HIV have an increased risk of TB infection, and are more likely to develop extrapulmonary TB. Approximately 10 - 20% of extrapulmonary TB accounts for skeletal TB, with spinal involvement in 50 - 60% of instances. Previous studies have shown highly heterogenic results regarding the effect of HIV status on clinical and laboratory characteristics in patients with spinal TB (STB). OBJECTIVE. To describe the clinical, laboratory, radiographical and histopathological characteristics of patients diagnosed with STB stratified by HIV status. METHODS. Data from patients who were treated for STB at the Division of Orthopaedic Surgery, Groote Schuur Hospital, SA, between 2013 and 2016 were analysed. We compared clinical, laboratory, radiographical and histopathological parameters of STB patients with HIV infection to those without HIV infection. To assess differences in means between the two groups, an independent samples t-test was used for normally distributed continuous data, and a χ² test for categorical data. To assess correlations between continuous data groups, the Pearson correlation coefficient was used. RESULTS. We assessed 52 patients with STB (mean (standard deviation (SD) age 38 (15.2) years, range 17 - 80 years), of whom 55.8% were female, and 59.6% HIV infected. Five (9.6%) patients were identified with multidrug-resistant TB of the spine, with four (19.0%) in the HIV-infected cohort and one in the HIV-uninfected cohort (p=0.058). Significantly more STB patients without HIV infection presented with neurogenic symptoms (29%, p=0.029). The mean (SD) overall erythrocyte sedimentation rate was 69.3 (35.9) mm/h, with no significant difference between HIV-infected and HIV-uninfected patients (p=0.086). The rate of vertebral collapse was higher in the HIV-infected cohort (39% v. 67%, p=0.048). HIV-infected patients showed a higher count of involved vertebrae (mean 3.0 v. 3.85; p=0.034). There was no correlation between CD4 count and the number of involved vertebrae. The mean (SD) number of granulomata per low-power field was 10 (12.6), with no difference between the two cohorts. However, we found a positive correlation between granuloma count and CD4 cell count in HIV-infected STB patients (Pearson 0.503, p=0.02), with significantly higher formation of granulomata at a CD4 cell count >400 cells/μL (p=0.045). CONCLUSION. In our cohort, HIV-infected patients with STB were more likely to present with vertebral collapse, and more vertebrae on average were diseased compared with HIV-uninfected patients with STB. CD4 cell count may affect granuloma formation, and it seems that HIV infection has a negative effect on cellular immunoresponse in STB, which emphasises the need for early antiretroviral therapy initiation.

ABSTRACT. This study evaluated the effects on the growth performance and physiological response (metabolism, hematology, and antioxidant capacity) of the juvenile hybrid red tilapia Oreochromis sp. (initial average weight of 2.82 ± 0.02 g) cultured in seawater with biofloc and fed commercial diets containing 25, 35 and 40% crude protein (P25, P35, and P40, respectively). After seven weeks of bioassay, fish fed P35 and P40 showed no significant differences in weight gain, specific growth rate, and condition factor. The P35 and P40 treatments showed the highest values of growth performance (SGR of 4.85 and 4.43% d-1, respectively) compared to the P25 treatment (4.3% d-1). Otherwise, fish from P35 showed lower activities for metabolic enzymes (ASAT, ALAT, GK, FBPase, G6PD, and FAS) than P40, which suggests that in P35, there was a better use of energy and protein content in the diets. On the other hand, P35 presented values similar to P40 regarding oxidative damage to lipids in the intestinal (5.62 and 5.77 nmol g-1, respectively) and muscle (4.76 and 3.93 nmol g-1, respectively) tissues, but higher than P25 in the liver (1.21 nmol g-1). Finally, the P25 diet triggered a significant decrease in erythrocyte parameters, as well as total protein and albumin in the blood plasma of the fish. In conclusion, marine biofloc allows hybrid red tilapia juveniles to be fed commercial diets with 35% crude protein without compromising their productive performance, antioxidant system, and hematological parameters.

ABSTRACT Introduction: Cerebrovascular disease is the most prevalent neurological condition, globally it represents 11% of total annual deaths and in Cuba is the third cause of death. Objective: Characterize early mortality in patients with ischemic stroke. Methods: An observational, descriptive, longitudinal and prospective study was carried out on patients who suffered an ischemic stroke during one year. Summary and dispersion measures were used with a 95% confidence interval. Results: Mortality was 15.1%, with a slight predominance of the female sex and white skin colors prevailed. Almost two-thirds of the death occurred in the first seven days of the acute ischemic event and in more than half of the patient cerebral edema was present as the cause of death. The vascular risk factors that predominated were high blood pressure, smoking and diabetes mellitus, with the large vessel atherothrombotic stroke subtype prevailing. When comparing the mean values between living and deceased patients, the variables: age, National Institute of Health Stroke Scale, leukocytes, blood glucose, leukoglycemic index, erythrocyte sedimentation rate and C-reactive protein were statistically significant. Conclusions: Stroke mortality in the Julio Trigo hospital behaves from a clinical and epidemiological point of view almost similarly to what was reported by other authors in other geographical regions and also in Cuba.

RESUMEN Introducción: La enfermedad cerebrovascular es la afección neurológica de mayor prevalencia; globalmente representa el 11 % del total de defunciones anuales y en Cuba es la tercera causa de muerte. Objetivo: Caracterizar la mortalidad temprana en los pacientes con ictus isquémico. Métodos: Se realizó un estudio observacional, descriptivo y prospectivo de los pacientes que sufrieron un ictus isquémico durante un año. Se emplearon medidas de resumen y dispersión, con un intervalo de confianza del 95 % para la prueba t de Student. Resultados: La mortalidad fue de un 15,1 %, con ligero predominio del sexo femenino y prevaleció el color blanco de la piel. Casi 2 tercios de los fallecidos (58,9 %) ocurrieron en los primeros 7 días del evento isquémico agudo y en más de la mitad de los pacientes se presentó edema cerebral como causa directa de muerte. Los factores de riesgo vascular que predominaron fueron la hipertensión arterial, el tabaquismo y la diabetes mellitus, y prevaleció el subtipo de ictus aterotrombótico de gran vaso. Al comparar los valores de la media entre los pacientes vivos y fallecidos, resultaron ser estadísticamente significativos las variables: edad, escala National Institute of Health Stroke Scale, leucocitos, glucemia, índice leuco-glucémico, eritrosedimentación y la proteína C reactiva. Conclusiones: La mortalidad por ictus, en el Hospital “Julio Trigo”, es similar, desde el punto de vista clínico y epidemiológico, a lo reportado por otros autores en otras regiones geográficas y también en Cuba.

Resumen: Introducción: Los pacientes con lupus eritematoso sistémico (LES) diagnosticados después de los 50 años presentan una enfermedad menos severa y un curso clínico más leve. El objetivo de este estudio es describir las características clínicas y de laboratorios del LES en pacientes de edad avanzada. Material y Método: Estudio observacional, descriptivo, de corte trasverso, retrospectivo, de pacientes con el diagnóstico de LES, de inicio posterior a los 50 años de edad, que consultaron en el Hospital Nacional, en el periodo comprendido entre diciembre de 2016 y mayo de 2024. Resultados: Se estudiaron 30 pacientes entre 51 y 87 años (edad media: 62,5 años ± 8,5), 16 mujeres (53,3%) y 14 varones 14 (46,6 %). El tiempo de enfermedad previo al diagnóstico fue de 59,4 ± 8.3 (50-80) días. La duración de la enfermedad fue en promedio 5 años ± 5,1 (1-26). Las principales manifestaciones clínicas fueron las artralgias 26 (86,6%), artritis 22 (72,3%), pérdida de peso 10 (33,3%) y fiebre prolongada (30%). Presentaron comorbilidades 19 pacientes (63,3 %), siendo la hipertensión arterial la principal. El anti-DNA fue positivo en 12 pacientes (42,8%), el anti-Ro en 5/25 pacientes (20%), el anti-Sm en 2/26 (7,9%). La eritrosedimentación en la primera hora fue ≥ 20 mm en 17/23 (73,9%). El 100% recibió tratamiento con hidroxicloroquina, mientras que recibieron corticoides 26 (86.6%) pacientes, micofenolato mofetil 7 (24,4%), ciclofosfamida 4 (13,3%). La mortalidad fue del 6,6 %. Conclusión: Los principales hallazgos fueron artralgias y artritis, siendo menos frecuentes los casos graves. La mayoría presentó comorbilidades, siendo la hipertensión arterial la más frecuente. La mortalidad fue del 6,6% de causa cardiovascular.

Abstract: Introduction: Patients with systemic lupus erythematosus (SLE) diagnosed after the age of 50 have a less severe disease and a milder clinical course. The objective of this study is to describe the clinical and laboratory characteristics of SLE in elderly patients. Material and Method: Observational, descriptive, cross-sectional, retrospective study of patients with the diagnosis of SLE, with onset after 50 years of age, evaluated at the National Hospital, in the period between December 2016 and May of 2024. Results: 30 patients between 51 and 87 years old (mean age: 62.5 years ± 8.5) were studied, 16 women (53.3%) and 14 men (46.6%). The time to diagnosis was 59.4 ± 8.3 (50-80) days. The duration of the disease was on average 5 years ± 5.1 (1-26). The main clinical manifestations were arthralgia in 26 (86.6%), arthritis in 22 (72.3%), weight loss in 10 (33.3%) and prolonged fever (30%). Nineteen patients (63.3%) had comorbidities, the main one being high blood pressure. Anti-dsDNA was positive in 12 patients (42.8%), anti-Ro in 5/25 patients (20%), anti-Sm in 2/26 (7.9%). The erythrocyte sedimentation rate was ≥ 20 mm in 17/23 (73.9%). All patients were treatment with hydroxychloroquine, 26 (86.6%) patients received corticosteroids, 7 (24.4%) mycophenolate mofetil, 4 (13.3%) cyclophosphamide. Mortality was 6.6%. Conclusion: The main findings were arthralgia and arthritis, with severe cases being less frequent. The majority presented comorbidities, with high blood pressure being the most common. Mortality was 6.6% due to cardiovascular causes.

Resumen Antecedentes: La Moringa peregrina Forssk es una planta muy conocida en etnomedicina debido a sus usos generalizados en diversas enfermedades como la tos, la cicatrización de heridas, la rinitis, la fiebre y la desintoxicación. Las semillas de la planta contienen compuestos citotóxicos para muchas células cancerosas. Durante el uso terapéutico de las plantas por vía oral, algunos compuestos presentes en ellas pueden ser citotóxicos para las líneas celulares normales y los glóbulos rojos. Objetivo: Este estudio fue el primer informe de investigación del perfil citotóxico sobre el cáncer oral, CAL 27, línea celular, y las actividades hemolíticas en eritrocitos humanos del extracto etanólico de semillas de Moringa peregrina (MPSE). Métodos: Se examinó el efecto citotóxico del MPSE contra la línea celular de cáncer oral CAL 27 mediante el ensayo con bromuro de 3-(4, 5-dimetiltiazol-2-il)-2, 5,-difeniltetrazolio (MTT). La toxicidad del MPSE sobre los eritrocitos humanos se determinó mediante un ensayo hemolítico in vitro. Resultados: MPSE mostró una actividad antiproliferativa significativa contra el cáncer oral, línea celular CAL 27 a concentraciones más bajas con un valor de concentración inhibitoria media máxima (IC50) de 21,03 μg/mL. A 1.000 µg/ml de MPSE, la hemólisis máxima fue del 14,3%, lo que está dentro del límite de seguridad. Conclusiones: Este estudio reveló un potencial anticancerígeno oral de MPSE y proporcionó una base para su uso potencial en el tratamiento del cáncer oral con un efecto hemolítico mínimo en los glóbulos rojos humanos.

Abstract Background : Moringa peregrina Forssk is a well-known plant in ethnomedicine due to its widespread uses in various diseases like cough, wound healing, rhinitis, fever, and detoxification. The plant seeds contain compounds that are cytotoxic to many cancer cells. During the therapeutic use of plants via the oral route, some compounds present in the plants may be cytotoxic to normal cell lines and red blood cells. Objective : This study was the first report of investigation of the cytotoxic profile on oral cancer, CAL 27, cell line, and hemolytic activities on human erythrocytes of Moringa peregrina seeds ethanolic extract (MPSE). Methods: MPSE was screened for its cytotoxic effect against oral cancer, CAL 27, cell line using 3-(4, 5-dimethylthiazol-2-yl)-2, 5,-diphenyltetrazolium bromide (MTT) assay. The toxicity of MPSE on human erythrocytes was determined by in vitro hemolytic assay. Results: MPSE showed significant anti-proliferative activity against oral cancer, CAL 27 cell line at lower concentrations with half maximal inhibitory concentration (IC50) value of 21.03 μg/mL. At 1,000 µg/ml of MPSE, the maximum hemolysis was found to be 14.3% which is within safer limit. Conclusions: This study revealed a potential anti-oral cancer of MPSE and provided a baseline for its potential use in oral cancer treatment with minimum hemolytic effect on human RBCs.

Abstract: In pediatrics, a process called Pediatric Inflammatory Multisystem Syndrome (PIMS) associated with recent infection by SARS-CoV-2 virus has been observed. One of its variants presents similarities with Kawasaki disease (KD). Objective: to compare the clinical presentation, laboratory testing, and evolution of KD with PIMS Kawasaki phenotype (PIMS-KD) in patients hospitalized before the pandemic, compared with the pandemic period. Patients and Method: Cross-sectional study in two groups of patients at the Hospital Exequiel González Cortés: typical KD (group 1) and PIMS-KD (group 2). Data on demographic, clinical, and biochemical details were collected, as well as echocardiogram, treatment, and evolution records. IgG and IgM serology for SARS-CoV-2 was performed in both groups. Results: In the KD group and the PIMS-KD group, 20 and 33 patients were analyzed, respectively. There were differences in age, days of fever, count of leukocytes, lymphocytes, and platelets, erythrocyte sedimentation rate (ESR), and hospital stay. In 25% of the KD group, there were alterations in the echocardiogram and, in the PIMS-K group, all patients received corticosteroids and 25 patients received intravenous immunoglobulin (IVIG). In both groups, a favorable clinical evolution was observed, characterized by the absence of complications and mortality. Conclusions: Based on the data obtained in our study, the importance of the epidemiological link is emphasized as an essential factor in differentiating between both pathologies, highlighting the need to consider factors such as age, duration of fever, count of leukocytes, lymphocytes, and platelets, and degree of cardiac involvement, for a differential evaluation between patients with PIMS-KD versus KD.

Resumen: En pediatría, se ha observado un proceso denominado Síndrome Inflamatorio Multisistémico asociado a infección reciente por virus SARS-CoV-2 (PIMS). Una de sus variantes, presenta similitudes con la Enfermedad de Kawasaki (EK). Objetivo: comparar la presentación clínica, laboratorio y evolución de EK con PIMS fenotipo Kawasaki (PIMS-EK) en pacientes hospitalizados antes de la pandemia, comparado con el periodo de pandemia. Pacientes y Método: Estudio de corte transversal en dos grupos de pacientes del Hospital Exequiel González Cortés: EK típica (grupo 1) y PIMS-EK (grupo 2). Se recopilaron datos demográficos, clínicos, bioquímicos, ecocardiograma, tratamiento y evolución. En ambos grupos se realizó serología IgG e IgM para SARS-CoV-2. Resultados: En el grupo 1 se analizaron 20 pacientes y en el grupo 2, 33 pacientes. Hubo diferencias en edad, días de fiebre, valores de leucocitos, linfocitos, plaquetas, velocidad de eritrosedimentación (VHS) y días de hospitalización. En 25% de pacientes del grupo EK hubo alteraciones en el ecocardiograma y en el grupo PIMS-EK todos recibieron corticoides y 25 pacientes Inmunoglobulina endovenosa (IGEV). En ambos grupos, se observó una evolución clínica favorable, caracterizada por la ausencia de complicaciones y mortalidad. Conclusiones: En base a los datos obtenidos en nuestro estudio, se destaca la importancia del nexo epidemiológico como un factor esencial para diferenciar entre ambas patologías, resaltando la necesidad de considerar factores como la edad, la duración de la fiebre, los valores de leucocitos, linfocitos y plaquetas, grado de compromiso cardíaco, para una evaluación diferencial entre pacientes con PIMS-EK versus EK.

ABSTRACT Introduction: Enteropathic spondylitis is an inflammatory, systemic and chronic disease that is characterized by affecting the digestive system and the osteomyoarticular system; The inflammatory process generates clinical manifestations that affect the functional capacity and perception of quality of life of patients. Objective: To evaluate the results of a nutritional intervention aimed at controlling the inflammatory process in patients with enteropathic spondylitis. Methods: A longitudinal observational and descriptive investigation was carried out that included as a universe 19 patients with a confirmed diagnosis of enteropathic spondylitis treated at the Andino Hospital of Chimborazo in the period between July 2022 and July 2023. The sample was made up of 17 patients. A nutritional intervention was applied for 10 months that included as a central element supplementation with foods rich in probiotics according to a scheme defined by a clinical nutrition specialist. Results: Average age of 43.51 years, predominance of the female sex (64.70%) and duration of the disease between 5 and 10 years (58.82%). All inflammation markers measured during the study improved during the patients' follow-up; At 9 months, an increase in the percentage of patients with negative C-reactive protein and fibrinogen and normal erythrocyte sedimentation rate was identified. Conclusions: The applied nutritional intervention contributed to improving serum values of inflammation markers in patients diagnosed with enteropathic spondylitis.

RESUMEN Introducción: La espondilitis enteropática es una enfermedad inflamatoria, sistémica y crónica que se caracteriza por afectar el aparato digestivo y el sistema osteomioarticular; el proceso inflamatorio genera manifestaciones clínicas que afectan la capacidad funcional y la percepción de calidad de vida de los pacientes. Objetivo: Evaluar los resultados de una intervención nutricional orientada al control del proceso inflamatorio en pacientes con espondilitis enteropática. Métodos: Se realizó una investigación observacional y descriptiva longitudinal que incluyó como universo a 19 pacientes con diagnóstico confirmado de espondilitis enteropática atendidos en el Hospital Andino de Chimborazo en el periodo comprendido entre julio 2022 y julio 2023. La muestra quedó conformada por 17 pacientes. Se aplicó una intervención nutricional durante 10 meses que incluyó como elemento central la suplementación con alimentos ricos en probióticos según esquema definido por especialista en nutrición clínica. Resultados: Promedio de edad de 43,51 años, predominio del sexo femenino (64,70 %) y del tiempo de evolución de la enfermedad entre 5 y 10 años (58,82 %). Todos los marcadores de inflamación medidos durante el estudio mejoraron durante el seguimiento realizado a los pacientes; a los 9 meses se identificó aumento del porcentaje de pacientes con proteína C reactiva negativa y fibrinógeno y velocidad de sedimentación globular normal. Conclusiones: La intervención nutricional aplicada contribuye a mejorar los valores séricos de los marcadores de inflamación en los pacientes con diagnóstico de espondilitis enteropática.

ABSTRACT Introduction: The association between atherogenic risk factors and retinal microvascular alterations is recognized, but there is no consensus on whether these retinal disorders precede or are a pathophysiological response to these factors. Objective: To determine if the presence of atherogenic risk factors predicts retinal vascular alterations, through fundus examination and retinography. Methods: Cross-sectional study in 55 subjects over 19 years of age, of either sex, without opacities in the transparent media of the eye. The variables studied were age, sex, dyslipidemia, smoking habit, alcohol consumption, arterial hypertension, type 2 diabetes mellitus, systolic and diastolic blood pressure, body mass index, cholesterol, glycemia, triglycerides, creatinine, high-density lipoproteins, urea, erythrocyte sedimentation rate and leukocyte count. Results: 65.45% presented alterations in the fundus of the eye: increased arteriolar brightness (53.03%) and decreased generalized arteriolar caliber (52.24%). Retinography showed damage in 58.18%: rectification of arteriovenous crossings (65.71%), venous tortuosity (28.21%), and arteriovenous crossings with crushing (85.71%). The increase in serum cholesterol (p= 0.003) was associated with systolic blood pressure (p= 0.037) in the fundus, and with a history of arterial hypertension (p= 0.023) in retinography. Conclusions: Serum cholesterol, high systolic blood pressure and a history of hypertension are the risk factors that best predict retinal vascular damage.

RESUMEN Introducción: Se reconoce la asociación entre los factores de riesgo aterogénico y las alteraciones microvasculares de la retina, pero no hay consenso sobre si estas afectaciones en la retina preceden o son una respuesta fisiopatológica a dichos factores. Objetivo: Determinar si la presencia de los factores de riesgo aterogénico predice las alteraciones vasculares retinianas, a través del fondo de ojo y la retinografía. Métodos: Estudio trasversal en 55 sujetos mayores de 19 años de edad, de cualquier sexo, sin opacidades en los medios transparentes del ojo. Se estudiaron las variables edad, sexo, dislipidemia, hábito de fumar, consumo de alcohol, hipertensión arterial, diabetes mellitus tipo 2, presión arterial sistólica y diastólica, índice de masa corporal, colesterol, glicemia, triglicéridos, creatinina, lipoproteínas de alta densidad, urea, eritrosedimentación y conteo leucocitario. Resultados: El 65,45 % presentó alteraciones en el fondo de ojo: aumento del brillo arteriolar (53,03 %) y disminución del calibre arteriolar generalizado (52,24 %). La retinografía mostró daño en el 58,18 %: rectificación de los cruces arteriovenosos (65,71 %), tortuosidad venosa (28,21 %) y cruces arteriovenosos con aplastamiento (85,71 %). El aumento del colesterol sérico (p= 0,003) se asoció con la presión arterial sistólica (p= 0,037) en el fondo de ojo, y con el antecedente de hipertensión arterial (p= 0,023) en la retinografía. Conclusiones: El colesterol sérico, las cifras elevadas de tensión arterial sistólica y antecedentes de hipertensión arterial son los factores de riesgo que mejor predicen el daño vascular retinal.

Resumen Los concentrados de glóbulos rojos son el componente que se utiliza con mayor frecuencia en las transfusiones sanguíneas. La irradiación gamma de la unidad transfusional está indicada cuando un paciente corre el riesgo de desarrollar la enfermedad de injerto contra huésped asociada a una transfusión. Sin embargo, esta irradiación exacerba la lesión de almacenamiento aumentando los niveles plasmáticos de potasio y disminuyendo los de sodio. Estos efectos sobre los glóbulos rojos reducen el tiempo de viabilidad de las unidades transfusionales irradiadas almacenadas. En este trabajo, estudiamos el efecto de diferentes dosis de radiación gamma sobre la concentración de los iones plasmáticos en las bolsas irradiadas, los cuales son indicativos de posibles alteraciones de las membranas de los glóbulos rojos y de los leucocitos. El análisis de los resultados obtenidos muestra que la radiación, a las dosis estudiadas, no afecta el consumo de glucosa. Sin embargo, la permeabilidad de la membrana de los eritrocitos aumenta con la dosis de radiación, indicando que este tipo de alteraciones podrían ser dosis dependiente. Estos resultados podrían ayudar a diseñar nuevos medios de conservación para reducir el daño a la membrana inducido por la radiación.

Abstrac Red blood cell concentrates are the most widely used component in blood transfusions. Gamma irradiation of the transfusion unit is indicated when a patient is at risk of developing transfusion-associated graft-versus-host disease. However, this irradiation exacerbates storage damage by increasing potassium and decreasing sodium plasmatic levels. These effects on red blood cells reduce the viability time of stored irradiated units. In this work, we study the different radiation dose effects on the concentration of plasmatic ions in the gamma-irradiated bags, which are attributed to possible membrane alterations of red blood cells and leukocytes. The result analysis shows that radiation, at the doses studied, does not affect glucose consumption. However, the permeability of the erythrocyte membrane increases with the radiation dose, indicating that these types of alterations could be dose-dependent. These results could help to design a new preservation medium to reduce radiation-induced membrane damage.

Abstract Introduction: Nephrotic syndrome (NS) is one of the reasons of end-stage kidney disease, and elucidating the pathogenesis and offer new treatment options is important. Oxidative stress might trigger pathogenesis systemically or isolated in the kidneys. Octreotide (OCT) has beneficial antioxidant effects. We aimed to investigate the source of oxidative stress and the effect of OCT on experimental NS model. Methods: Twenty-four non-uremic Wistar albino rats were divided into 3 groups. Control group, 2 mL saline intramuscular (im); NS group, adriamycin 5 mg/kg intravenous (iv); NS treatment group, adriamycin 5 mg/kg (iv) and OCT 200 mcg/kg (im) were administered at baseline (Day 0). At the end of 21 days, creatinine and protein levels were measured in 24-hour urine samples. Erythrocyte and renal catalase (CAT) and thiobarbituric acid reactive substance (TBARS) were measured. Renal histology was also evaluated. Results: There was no significant difference among the 3 groups in terms of CAT and TBARS in erythrocytes. Renal CAT level was lowest in NS group, and significantly lower than the control group. In treatment group, CAT level significantly increased compared with NS group. In terms of renal histology, tubular and interstitial evaluations were similar in all groups. Glomerular score was significantly higher in NS group compared with control group and it was significantly decreased in treatment group compared to NS group. Conclusions: Oxidative stress in NS might be due to the decrease in antioxidant protection mechanism in kidney. Octreotide improves antioxidant levels and histology in renal tissue and might be a treatment option. Introduction (NS endstage stage disease important kidneys (OCT effects model Methods Twentyfour Twenty four nonuremic non uremic im mgkg mg kg iv (iv 20 mcgkg mcg (im Day 0. 0 . 0) days 24hour hour 24 samples (CAT (TBARS evaluated Results erythrocytes Conclusions option

Resumo Introdução: Síndrome nefrótica (SN) é uma das causas de doença renal em estágio terminal. É importante elucidar a patogênese e oferecer novas opções de tratamento. Estresse oxidativo pode desencadear a patogênese sistemicamente ou isoladamente nos rins. O octreotide (OCT) tem efeitos antioxidantes benéficos. Nosso objetivo foi investigar a fonte de estresse oxidativo e efeito do OCT no modelo experimental de SN. Métodos: Dividimos 24 ratos albinos Wistar não urêmicos em 3 grupos. Grupo controle, 2 mL de solução salina intramuscular (im); grupo SN, adriamicina 5 mg/kg intravenosa (iv); grupo tratamento SN, adriamicina 5 mg/kg (iv) e OCT 200 mcg/kg (im) foram administrados no início do estudo (Dia 0). Aos 21 dias, mediram-se os níveis de creatinina e proteína em amostras de urina de 24 horas. Mediu-se a catalase (CAT) eritrocitária e renal e a substância reativa ao ácido tiobarbitúrico (TBARS). Avaliou-se também histologia renal. Resultados: Não houve diferença significativa entre os três grupos em termos de CAT e TBARS em eritrócitos. O nível de CAT renal foi menor no grupo SN e significativamente menor que no grupo controle. No grupo tratamento, o nível de CAT aumentou significativamente em comparação com o grupo SN. Quanto à histologia renal, as avaliações tubular e intersticial foram semelhantes em todos os grupos. O escore glomerular foi significativamente maior no grupo SN em comparação com o grupo controle e diminuiu significativamente no grupo de tratamento em comparação com o grupo SN. Conclusões: Estresse oxidativo na SN pode ser devido à diminuição do mecanismo de proteção antioxidante nos rins. O octreotide melhora níveis de antioxidantes e histologia do tecido renal e pode ser uma opção de tratamento. Introdução (SN terminal rins (OCT benéficos Métodos im mgkg mg kg iv (iv 20 mcgkg mcg (im Dia 0. 0 . 0) dias mediramse mediram se horas Mediuse Mediu (CAT TBARS. (TBARS) Avaliouse Avaliou Resultados eritrócitos Conclusões (TBARS

ABSTRACT Liposarcoma is a mesenchymal origin tumor that commonly occurs in the retroperitoneum; It is slow growing and its ability to produce metastasis depends on its histological type. The purpose of this work is to present a case of simultaneous paratesticular liposarcomas with different histological types, in an 80-years-old male patient with a health history and low socioeconomic level; For two years he had been experiencing an increase in volume in the left inguinal region and ipsilateral testicle, which at first was painless; Then, as it increased in size, it became painful, covering the entire right inguinoscrotal region. Physical examination, including transillumination sign, was negative. The analytical study only showed erythrocyte sedimentation rate at 95 mm/h and LDH at 650 U/l; The testicular ultrasound showed heterogeneous, solid and hyperechoic mass, with a fatty inguinoscrotal appearance and measuring more tan 30 cm, without the testicle being observed. Tumor excision was performed and three liposarcomatous tumors were found, two of them with similar histopathological characteristics and the other with a different histological pattern. After the surgical treatment, the patient recovered satisfactorily and has not had a recurrence according to the periodic controls carried out. The publication of the case was considered because liposarcomas can be confused on clinical examination with the presence of an inguinal hernia with fatty content with symptoms similar to these; Therefore, a thorough clinical examination must be performed to make a correct diagnosis. The histopathological study confirmed the diagnosis of the disease; which, in addition, revealed the presence of three liposarcomatous tumors and two histopathological variants of the same, from which no reports were found in the reviewed literature.

RESUMEN El liposarcoma es un tumor de origen mesenquimal que se presenta comúnmente en el retroperitoneo; es de crecimiento lento y su capacidad de producir metástasis depende de su tipo histológico. Este trabajo tiene como propósito presentar un caso de liposarcomas paratesticulares simultáneos con diferentes tipos histológicos, en un paciente masculino, de 80 años con antecedentes de salud y nivel socioeconómico bajo que venía presentando desde hacía dos años aumento de volumen en la región inguinal izquierda y testículo ipsilateral, al inicio fue indoloro; luego, a medida que aumentó de tamaño se tornó doloroso, abarcando la región inguinoescrotal derecha en su totalidad. El examen físico, incluido el signo de la transiluminación fue negativo. El estudio analítico mostró solamente velocidad de sedimentación globular en 95 mm/h y la LDH en 650 U/l; la ecografía testicular mostró una masa heterogénea, solida e hiperecoica, de aspecto graso inguinoescrotal y de más de 30 cm, sin llegarse a observar el testículo. Se realizó exéresis tumoral encontrándose tres tumores liposarcomatosos, dos de ellos con características histopatológicas similares y el otro con patrón histológico diferente. Luego del tratamiento quirúrgico el paciente se recuperó satisfactoriamente y no ha presentado recidiva según los controles periódicos realizados. Se consideró la publicación del caso pues los liposarcomas pueden llegar a confundirse a la exploración clínica con la presencia de una hernia inguinal de contenido graso con sintomatología similar a estas; por lo que debe hacerse una exploración clínica exhaustiva para realizar un correcto diagnóstico. El estudio histopatológico confirmó el diagnóstico de la enfermedad que, además, reveló la presencia de tres tumores liposarcomatosos y dos variantes histopatológicas del mismo, de lo cual no se encontraron reportes en la literatura revisada.

Resumo: Introdução: a deficiência de ferro é a causa mais comum de anemia por deficiência nutricional. Seu tratamento consiste no fornecimento de alimentos ricos em ferro biodisponível, juntamente com a administração de ferro por via oral. Em circunstâncias especificas, pode ser utilizado ferro intravenoso. Objetivo: descrever a abordagem diagnóstica e terapêutica de uma criança com anemia ferropriva grave secundária a sua má adesão ao ferro oral, e o uso de ferro intravenoso. Caso clínico: 21 meses, raça branca. História de anemia ferropriva grave, com repercussão hemodinâmica que requiriu de transfusão de sangue desplasmatizada aos 14 meses. Não houve nenhum controle de hemoglobina subsequente. Nenhuma adesão à profilaxia oral com ferro. Alto consumo de leite de vaca e baixo consumo de alimentos ricos em ferro. No contexto de infecção respiratória inferior aguda, observa-se anemia clínica com acentuado emagrecimento e anorexia, sem repercussões hemodinâmicas. É confirmada anemia microcítica e hipocrômica grave, com largura de distribuição eritrocitária elevada e metabolismo alterado do ferro. Recebeu sacarose férrica intravenosa por 6 dias com boa tolerância e evolução. Discussão: foram identificados múltiplos fatores de risco para anemia ferropriva. A má resposta ao tratamento com ferro oral devido aos efeitos adversos e ao esquecimento da administração, aliás da história de anemia ferropriva grave, que exigiu transfusão de sangue desplasmatizada, motivaram a indicação do ferro intravenoso. Sua administração foi programada e monitorada, e aconteceu sem intercorrências. É preciso fortalecer a prevenção em todos os controles pediátricos e abordar este problema de saúde numa persectiva interdisciplinar.

Summary: Introduction: iron deficiency is the most common cause of anemia due to nutritional deficiency. Its treatment consists of providing bioavailable iron rich food together with oral iron. In specific circumstances, intravenous iron may be used. Objective: of this study is to describe the diagnostic and therapeutic approach used with a child with severe iron deficiency anemia secondary to poor adherence to oral iron, in which intravenous iron was used. Clinical case: 21 month-old white patient. History of severe iron deficiency anemia, with hemodynamic repercussions that at 14 months of age required transfusion of deplasmatized blood. Without subsequent hemoglobin controls. No adherence to oral iron prophylaxis. High consumption of cow’s milk and low of iron-rich foods. Within the context of acute lower respiratory infection, a clinical anemia with marked decline and anorexia were observed, without hemodynamic repercussions. Severe hypochromic microcytic anemia was confirmed, with an elevated erythrocyte distribution width and altered iron metabolism. He received iron saccharate, intravenously for 6 days with good tolerance and evolution. Discussion: multiple risk factors for iron deficiency anemia were identified. The poor response to treatment with oral iron resulting from adverse effects and lack of proper administration, together with a history of severe iron deficiency anemia, which required transfusion of deplasmatized blood, led to the prescription of intravenous iron. This administration was scheduled and monitored, occurring without complications. It is necessary to strengthen prevention of this condition in all pediatric check-ups and address this health problem from an interdisciplinary perspective.

Resumen: Introducción: el déficit de hierro es la causa más común de anemia debido a carencia nutricional. Su tratamiento consiste en proporcionar alimentos ricos en hierro biodisponible junto con la administración de hierro oral. En circunstancias definidas puede utilizarse el hierro intravenoso. Objetivo: describir el abordaje diagnóstico y terapéutico de un niño portador de anemia ferropénica severa secundaria a mala adherencia al hierro oral en el que se utilizó hierro intravenoso. Caso clínico: niño de 21 meses, raza blanca. Antecedente de anemia ferropénica severa, con repercusión hemodinámica que a los 14 meses requirió transfusión de sangre desplasmatizada. Sin controles de hemoglobina posteriores. Sin adherencia a profilaxis con hierro vía oral. Alto consumo de leche de vaca y bajo consumo de alimentos ricos en hierro. En el contexto de infección respiratoria aguda baja se constata anemia clínica con marcado decaimiento y anorexia, sin repercusión hemodinámica. Se confirma la anemia microcítica, hipocrómica severa, con ancho de distribución eritrocitaria elevado, con metabolismo de hierro alterado. Recibe hierro sacarato, intravenoso, por seis días con buena tolerancia y evolución. Discusión: se identificaron múltiples factores de riesgo para anemia ferropénica. La pobre respuesta al tratamiento con hierro oral debido a efectos adversos y olvidos de administración, junto al antecedente de anemia ferropénica severa, que requirió transfusión de sangre desplasmatizada, motivaron la indicación de hierro intravenoso. Su administración fue programada y monitorizada, sin complicaciones. Es necesario fortalecer la prevención en todos los controles pediátricos y abordar este problema de salud desde una mirada interdisciplinaria.

ABSTRACT Introduction: Various evidences have shown that systemic inflammation and malnutrition could be associated with the disease activity of patients with rheumatoid arthritis and it could contribute to the pathogenesis and progression of the disease. Objective: To determine the association between albuminemia and the ratio of neutrophils and lymphocytes with disease activity in patients with rheumatoid arthritis. Methods: An analytical, cross-sectional cohort study was carried out on 761 patients treated in the protocolized consultation of Hermanos Ameijeiras Clinical Surgical Hospital from September 2021 to March 2023. Results: The study population was characterized by predominance of the female sex (88%), average age of 54.5 years, white skin (57.2%), overweight and obese (72.2%), the average evolution time was 10.7 years and moderate disease activity (50.5%). 72% had elevated neutrophil to lymphocyte ratio. Albumin showed inverse and significant correlation with erythrocyte sedimentation rate and C-reactive protein. Both elevated neutrophil-lymphocyte ratio and albumin-derived neutrophil-lymphocyte ratio were associated with disease activity. Conclusions: Albumin and the ratio of neutrophils and lymphocytes are parameters that are related in patients with rheumatoid arthritis and the activity of the disease, especially when both are combined.

RESUMEN Introducción: Diversas evidencias han demostrado que la inflamación sistémica y la desnutrición podrían estar asociadas con actividad de la enfermedad de los pacientes con artritis reumatoide y podrían contribuir a la patogénesis y progresión de la enfermedad. Objetivo: Determinar la asociación entre la albuminemia y la relación neutrófilos y linfocitos con actividad de la enfermedad en pacientes con artritis reumatoide. Métodos: Se realizó un estudio analítico de cohorte transversal en 761 pacientes atendidos en la consulta protocolizada del Hospital Clínico Quirúrgico Hermanos Ameijeiras, en el período comprendido entre septiembre de 2021 y marzo de 2023. Resultados: La población en estudio se caracterizó por un predominio del sexo femenino (88 %), edad promedio de 54,5 años, piel blanca (57,2 %), con sobrepeso y obesidad (72,2 %), tiempo de evolución con una media de 10,7 años y actividad moderada de la enfermedad (50,5 %). El 72 % tenía una relación neutrófilos y linfocitos elevados. La albúmina mostró una correlación inversa y significativa con la eritrosedimentación y la proteína C reactiva. Tanto la relación neutrófilos y linfocitos elevados como la derivada de albúmina- relación neutrófilos/linfocitos se asociaron con actividad de la enfermedad. Conclusiones: La albúmina y la relación neutrófilos y linfocitos son parámetros que se relacionan en pacientes con artritis reumatoide y actividad de la enfermedad, sobre todo cuando se combinan ambos.

SUMMARY Introduction: diet influences chronic inflammation and oxidative stress, which is associated with the development of chronic diseases. Objective: to identify the association between the dietary inflammatory index and the indicators of oxidative stress and inflammation in Cuban adolescents. Methods: a cross-sectional study was carried out, which included 39 Cuban adolescents from the Faculty of Medical Sciences of Bayamo, Granma. The Dietary Inflammatory Index was carried out through a semi-quantitative food frequency questionnaire taking into account 20 dietary parameters using a previously published protocol. Of the indicators of oxidative stress, the concentration of malondialdehyde plus 4-hydroxyalkenals, the advanced oxidation protein products and the ferric reducing power, were determined in the blood serum and the concentration of reduced glutathione in erythrocytes. The leukocyte count and differential count were used as an indicator of inflammation. Results: no significant associations were found across the quartiles of the dietary inflammatory index with the leukocyte and the differential leukocyte count, while a negative and significant association was found with the iron-reducing potential and the erythrocyte concentrations of reduced glutathione and positive and significant with those of malondialdehyde plus 4-hydroxyalkenals and the advanced oxidation protein products. Conclusions: it is concluded that a pro-inflammatory diet was associated with variations in oxidative stress biomarkers, particularly with a decrease in indicators of antioxidant defenses and an increase in those of inflammatory oxidative damage.

RESUMO Introdução: A dieta influencia a inflamação crônica e o estresse oxidativo, que está associado ao desenvolvimento de doenças crônicas. Objetivo: Identificar a associação entre potencial inflamatório da dieta e indicadores de estresse oxidativo e inflamação em adolescentes cubanos. Métodos: Foi realizado um estudo transversal, que incluiu 39 adolescentes cubanos da Faculdade de Ciências Médicas de Bayamo, Granma. O Índice Inflamatório da Dieta foi calculado a partir de um inquérito dietético de frequência de consumo alimentar. A partir dos indicadores de estresse oxidativo, foram determinadas as concentrações de malondialdeído mais 4-hidroxialquenos, a concentração de produtos avançados de oxidação proteica e o poder redutor férrico no soro sanguíneo e a concentração de glutationa reduzida nos eritrócitos. A contagem de leucócitos e a contagem diferencial de leucócitos foram utilizadas como indicador de inflamação. Resultados: Não foram encontradas associações significativas entre os quartis do índice inflamatório dietético com a contagem de leucócitos e a contagem diferencial de leucócitos, enquanto uma associação negativa e significativa foi encontrada com o potencial redutor férrico e as concentrações de glutationa eritrocitária reduzida e positiva e significativa com as de malondialdeído mais 4-hidroxialquenais e produtos avançados de oxidação proteica. Conclusões: Conclui-se que uma dieta pró-inflamatória foi associada a variações nos biomarcadores de estresse oxidativo, em particular com uma diminuição nos indicadores de defesas antioxidantes e um aumento no dano oxidativo inflamatório.

RESUMEN Introducción: la dieta influye en la inflamación crónica y el estrés oxidativo, lo que se asocia al desarrollo de enfermedades crónicas. Objetivo: identificar la asociación entre el potencial inflamatorio de la dieta y los indicadores del estrés oxidativo y la inflamación en adolescentes cubanos. Métodos: se realizó un estudio transversal, que incluyó a 39 adolescentes cubanos de la Facultad de Ciencias Médicas del municipio Bayamo, provincia Granma. El Índice Inflamatorio de la Dieta se calculó a partir de una encuesta dietética de frecuencia de consumo de alimentos. De los indicadores del estrés oxidativo, se determinaron en el suero sanguíneo las concentraciones de malondialdehído más los 4-hidroxialquenales, la concentración de los productos avanzados de la oxidación de proteínas y el poder reductor férrico y en eritrocitos la concentración de glutatión reducido. Como indicador de inflamación se utilizaron el recuento de leucocitos y el conteo diferencial de estos. Resultados: no se encontraron asociaciones significativas a través de los cuartiles del índice inflamatorio de la dieta con el recuento leucocitario y el conteo diferencial de leucocitos, en tanto, si se encontró una asociación negativa y significativa con el potencial reductor férrico y las concentraciones del glutatión reducido eritrocitario y positiva y significativa con las de malondialdehído más los 4-hidroxialquenales y de los productos avanzados de la oxidación de proteínas. Conclusiones: se concluye que una dieta proinflamatoria se asoció con variaciones en los biomarcadores de estrés oxidativo, en particular con disminución de los indicadores de las defensas antioxidantes y aumento de los de daño oxidativo inflamatorio.