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Chickpeas are rich sources of bioactive compounds such as phenolic acids, flavonoids, and isoflavonoids. However, the contribution of insoluble-bound phenolics to their antioxidant properties remains unclear. Four varieties of chickpeas were evaluated for the presence of soluble (free and esterified) and insoluble-bound phenolics as well as their antiradical activity, reducing power and inhibition of peroxyl-induced cytotoxicity in human HuH-7 cells. In general, the insoluble-bound fraction showed a higher total phenolic content. Phenolic acids, flavonoids, and isoflavonoids were identified and quantified by UPLC-MS/MS. Taxifolin was identified for the first time in chickpeas. However, m-hydroxybenzoic acid, taxifolin, and biochanin A were the main phenolics found. Biochanin A was mostly found in the free fraction, while m-hydroxybenzoic acid was present mainly in the insoluble-bound form. The insoluble-bound fraction made a significant contribution to the reducing power and antiradical activity towards peroxyl radical. Furthermore, all extracts decreased the oxidative damage of human HuH-7 cells induced by peroxyl radicals, thus indicating their hepatoprotective potential. This study demonstrates that the antioxidant properties and bioactive potential of insoluble-bound phenolics of chickpeas should not be neglected.

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Introducción: Las hemoglobinopatías se consideran errores monogénicos hereditarios y están caracterizados por defectos en la molécula de hemoglobina. En Cuba, la detección prenatal de hemoglobinopatías se realiza a través de la electroforesis de hemoglobina para identificar parejas de alto riesgo. El programa brinda: asesoramiento genético, diagnóstico prenatal molecular e interrupciones selectivas de fetos afectados, a solicitud de las parejas. Objetivo: Determinar la frecuencia de hemoglobinopatías en mujeres embarazadas residentes en Cuba. Métodos: Se realizó un estudio descriptivo, retrospectivo y de corte transversal para determinar la frecuencia de hemoglobinopatías en 1 342 917 mujeres embarazadas captadas en el periodo 2009-2019. El método diagnóstico de la pesquisa fue la electroforesis de hemoglobina en geles de agarosa a pH alcalino. La confirmación se realizó por electroforesis de hemoglobina en gel de agarosa a pH ácido; ambos métodos mediante la tecnología HYDRASYS. Resultados: La frecuencia global de embarazadas con hemoglobinopatías fue de 3,5 por ciento. Se detectó hemoglobinopatías en 47 465 mujeres; 38 698 con variante S heterocigoto, 8 706 variantes de hemoglobina C y 158 de otras variantes. Se detectaron 44 283 esposos con hemoglobinopatías, 3 099 parejas de alto riesgo y se realizaron 2 689 diagnósticos prenatales moleculares. Se confirmaron 522 fetos afectados y 382 parejas solicitaron la interrupción del embarazo. El subprograma alcanzó 99,24 por ciento de cobertura en el país. Conclusión: La alta frecuencia de hemoglobinopatías en Cuba justifica la importancia de continuar el subprograma de detección de portadores para prevenir la aparición de las formas graves de la enfermedad(AU)

Introduction: Hemoglobinopathies are hereditary monogenic errors characterized by defects in the hemoglobin molecule. In Cuba, prenatal detection of hemoglobinopathies is performed by hemoglobin electrophoresis to identify high-risk couples. The program offers genetic counseling, prenatal molecular diagnosis and selective pregnancy termination in case of affected fetuses at the request of couples. Objective: Determine the frequency of hemoglobinopathies among pregnant women living in Cuba. Methods: A descriptive cross-sectional retrospective study was conducted to determine the frequency of hemoglobinopathies in 1 342 917 pregnant women recruited in the period 2009-2019. Screening was based on the diagnostic method of hemoglobin electrophoresis in alkaline pH agarose gels. Confirmation was performed with hemoglobin electrophoresis in acid pH agarose gel. Both methods used HYDRASYS technology. Results: Overall frequency of pregnant women with hemoglobinopathies was 3.5 percent. Hemoglobinopathies were detected in 47 465 women: 38 698 with variant S heterozygote, 8 706 with variants of hemoglobin C y 158 with other variants. 44 283 husbands with hemoglobinopathies and 3 099 high-risk couples were detected, and 2 689 prenatal molecular diagnostic tests were conducted. A total 522 affected fetuses were confirmed, and 382 couples requested pregnancy termination. The subprogram achieved 99.24 percent coverage in the country. Conclusion: The high frequency of hemoglobinopathies in Cuba justifies the importance of continuing the carrier detection subprogram to prevent the emergence of severe forms of the disease(AU)

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RESUMEN Fundamento: la aciduria metilmalónica es una de las acidurias orgánicas más frecuentes y agrupa un conjunto de defectos genéticos caracterizados por la excreción de niveles elevados de ácido metilmalónico en la orina. La excreción de este metabolito puede ir acompañada o no de niveles elevados de homocisteína en dependencia de la ruta metabólica afectada. Objetivo describir la implementación de una metodología de laboratorio que combina el ácido metilmalónico y la homocisteína en el diagnóstico diferencial y seguimiento de la aciduria metilmalónica en el periodo de 2013 a 2018. Métodos: a los pacientes con incremento de ácido metilmalónico en el perfil de ácidos orgánicos, se les cuantificó homocisteína en plasma y orina. La identificación del ácido metilmalónico se realizó por cromatografía gaseosa/ espectrometría de masas, mientras que la cuantificación de homocisteína por cromatografía líquida de alta resolución. Resultados: los métodos cromatográficos permitieron la identificación y cuantificación del ácido metilmalónico y la homocisteína, respectivamente. La homocisteína se cuantificó en siete pacientes con niveles incrementados de aciduria metilmalónica. Los niveles de homocisteína en cuatro de ellos fueron superiores a los valores normales, sugiriendo una aciduria combinada con homocistinuria. Tres de los pacientes con aciduria metilmalónica combinada bajo tratamiento mostraron una disminución en los niveles de ambos metabolitos, correspondiendo con una satisfactoria evolución. Conclusiones: la metodología implementada con los análisis de la determinación simultánea de ambos marcadores permitió el diagnóstico diferencial y seguimiento bioquímico de la aciduria metilmalónica.

ABSTRACT Foundation: methylmalonic aciduria is one of the most frequent organic acidurias and groups together a set of genetic defects, characterized by the excretion of elevated levels of urinemethyl malonic acid. The excretion of this metabolite may or may not be accompanied by elevated homocysteine ​​levels depending on the affected metabolic pathway. Objective: to describe the implementation of a laboratory methodology that combines methylmalonic acid and homocysteine ​​in the differential diagnosis and monitoring of methylmalonic aciduria in the period from 2013 to 2018. Methods: for patients with an increase in methylmalonic acid in the organic acid profile, homocysteine ​​was quantified in plasma and urine. The identification of methylmalonic acid was performed by gas chromatography / mass spectrometry, while the homocysteine ​​quantification by high performance liquid chromatography. Results: chromatographic methods allowed the identification and quantification of methylmalonic acid and homocysteine, respectively. Homocysteine ​​was quantified in seven patients with increased levels of methylmalonic aciduria. Homocysteine ​​levels in four of them were higher than normal values, suggesting aciduria combined with homocystinuria. Three of the patients with combined methylmalonic aciduria under treatment showed a decrease in the levels of both metabolites, corresponding to a satisfactory evolution. Conclusions: simultaneous determination of both markers allowed differential diagnosis and biochemical monitoring of this disease.

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RESUMEN Fundamento: el desarrollo vertiginoso de la ciencia y la técnica incorpora constantemente nuevos adelantos al quehacer diario del ejercicio médico, lo cual reclama una continua capacitación. Esta necesidad se acentúa cuando se trata de la atención a pacientes graves en el contexto del postoperatorio de cirugía cardiovascular, donde la mayoría son atendidos en unidades de terapia intensiva. Objetivos: diseñar un material docente de apoyo bibliográfico para los temas incluidos en el Módulo 25: Cuidados postoperatorios cardiovasculares en el adulto y el niño, del programa de estudio de tercer año de la residencia de Cardiología. Métodos: se realizó una investigación de desarrollo en el Cardiocentro "Ernesto Che Guevara", de Villa Clara, durante diciembre 2017-mayo 2018. Se emplearon métodos teóricos: análisis-síntesis, inducción-deducción y sistémico-estructural; empíricos: análisis documental y cuestionario a docentes médicos especialistas; y matemáticos estadísticos para los valores absolutos y relativos. Resultados: la literatura sobre los temas del módulo se encuentra dispersa, es extensa y posee acceso parcialmente limitado, el cuestionario de satisfacción sobre el material diseñado, obtuvo en todas las variables analizadas la categoría 4, lo que avala su actualización, pertinencia, integración, estructura y organización de los contenidos. Conclusiones: el material de apoyo resultó adecuado, con buena aceptación, y se tuvieron en cuenta las recomendaciones emitidas por los especialistas en su elaboración final.

ABSTRACT Background: the vertiginous development of science and technology constantly incorporates new advances to the daily task of medical practice, which calls for continuous training. This need is accentuated when dealing with the care of serious patients in the context of postoperative cardiovascular surgery, where the most of them are treated in intensive care units. Objectives: to design a teaching aid for bibliographic support for the subjects included in Module 25: Cardiovascular post-operative care in adults and children, of the third year study program of the cardiology residency. Methods: a development research was carried out in the "Ernesto Che Guevara" Cardiologic center, in Villa Clara, from December 2017 to 2018. Theoretical methods were used: analysis-synthesis, induction-deduction and systemic-structural; empirical ones: documentary analysis and questionnaire to specialized medical teachers; and statistical mathematics for absolute and relative values. Results: the literature on the subjects of the module is scattered, it is extensive and has partially limited access, the satisfaction questionnaire on the teaching aid designed, obtained in the entire variables analyzed category 4, which supports its updating, relevance, integration, structure and organization of the contents. Conclusions: the teaching aid was adequate, with good acceptance, and the recommendations issued by the specialists in its final elaboration were taken into account.

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Las acidurias orgánicas son las enfermedades metabólicas hereditarias más frecuentes en pacientes pediátricos con estado crítico de enfermedad. Este trabajo describe la experiencia cubana en el diagnóstico de estas enfermedades. Desde julio de 2008 hasta diciembre de 2013 se procesaron las orinas de pacientes cubanos con sospecha de aciduria orgánica. El perfil de ácidos orgánicos se obtuvo por cromatografía gaseosa acoplada a espectrometría de masas. Se analizaron muestras de orinas de 488 pacientes cubanos provenientes de todo el país. Del total de muestras procesadas, 29 mostraron niveles elevados de ácido láctico, pero no se realizó el diagnóstico confirmatorio de acidurias lácticas primarias en estos casos. Otras acidurias frecuentes entre los casos analizados fueron: acidurias metilmalónicas (5), deficiencia de acil-CoA deshidrogenasa de cadena media (3), alcaptonuria (3) y aciduria propiónica (3). Los hallazgos clínicos más frecuentes en los pacientes diagnosticados fueron la acidosis metabólica y los signos neurológicos. Los resultados muestran la importancia del análisis del perfil de ácidos orgánicos en niños con estado de gravedad; el diagnóstico acertado de estas enfermedades es decisivo para definir el tratamiento más efectivo y ofrecer a sus familias asesoramiento genético y la posibilidad de diagnóstico prenatal.(AU)

Organic acidurias are the most frequent hereditary metabolic disorders in severely ill pediatric patients. In this work, the Cuban experience in the diagnosis of organic acidurias is reported. From July 2008 to December 2013, urine samples were collected from Cuban patients with clinical suspicion of inherited metabolic diseases. The analysis of urinary organic acid profile was performed by gas chromatography coupled to mass spectrometry. Urine samples from 488 Cuban patients from all over the country were processed. Out of the total number, 29 cases showed increased levels of lactic acid; however the confirmatory diagnosis of primary lactic acidurias was not carried out. Other frequent disorders among analyzed cases were methylmalonic acidurias (5), medium chain acyl-CoA deshydrogenase deficiency (3), alkaptonuria (3) and propionic aciduria (2). Metabolic acidosis and neurological symptoms were the most common clinical findings among diagnosed children. The results show the importance of organic acidurias testing in severely ill patients, since the accurate diagnosis of these diseases is crucial to define the most effective treatment for affected patients and it makes it possible to provide patients and their families with the possibility of proper genetic counseling and prenatal testing.(AU)

As acidúrias orgÔnicas sÒo as doenþas metabólicas hereditárias mais frequentes nos pacientes pediátricos severamente doentes. Este trabalho descreve a experiÛncia cubana no diagnóstico dessas doenþas. Entre julho de 2008 e dezembro de 2013 a urina de pacientes cubanos suspeitos de apresentar acidúrias orgÔnicas foi analisada. O perfil de ácidos orgÔnicos foi obtido por cromatografia gasosa acoplada O espectrometria de massas. Foram analisadas amostras de urina de 488 pacientes cubanos provenientes de todo o país. Das amostras processadas, 29 apresentaram níveis elevados de ácido láctico, mas nÒo foi realizado o diagnóstico confirmatório de acidúrias lácticas primárias nesses casos. Outras acidúrias frequentes entre os casos investigados foram: acidúrias metilmal¶nicas (5), deficiÛncia de acil-CoA desidrogenase de cadeia média (3), alcaptonúria (3) e acidúria propi¶nica (3). Os achados clínicos mais frequentes nos pacientes diagnosticados foram a acidose metabólica e as manifestaþ§es neurológicas. Esses resultados mostram a importÔncia da análise do perfil de ácidos orgÔnicos em crianþas em estado grave; o diagnóstico correto destas doenþas é decisivo para definir o tratamento mais efetivo e oferecer aos familiares assessoria genética e a possibilidade de diagnóstico pré-natal.(AU)

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Las acidurias orgánicas son las enfermedades metabólicas hereditarias más frecuentes en pacientes pediátricos con estado crítico de enfermedad. Este trabajo describe la experiencia cubana en el diagnóstico de estas enfermedades.Desde julio de 2008 hasta diciembre de 2013 se procesaron las orinas de pacientes cubanos con sospecha de aciduria orgánica. El perfil de ácidos orgánicos se obtuvo por cromatografía gaseosa acoplada a espectrometría de masas. Se analizaron muestras de orinas de 488 pacientes cubanos provenientes de todo el país. Del total de muestras procesadas, 29 mostraron niveles elevados de ácido láctico, pero no se realizó el diagnóstico confirmatorio de acidurias lácticas primarias en estos casos. Otras acidurias frecuentes entre los casos analizados fueron: acidurias metilmalónicas (5),deficiencia de acil-CoA deshidrogenasa de cadena media (3), alcaptonuria(3) y aciduria propiónica (3). Los hallazgos clínicos más frecuentes en los pacientes diagnosticados fueron la acidosis metabólica y los signos neurológicos. Los resultados muestran la importancia del análisis del perfil de ácidos orgánicos en niños con estado de gravedad; el diagnóstico acertado de estas enfermedades es decisivo para definir el tratamiento más efectivo y ofrecer a sus familias asesoramiento genético y la posibilidad de diagnóstico prenatal...

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As commercial human immunodeficiency virus type 1 drug resistance assays are expensive, they are not commonly used in resource-limited settings. Hence, a more affordable in-house procedure was set up taking into account the specific epidemiological and economic circumstances of Cuba. The performance characteristics of the in-house assay were evaluated using clinical samples with various subtypes and resistance patterns. The lower limit of amplification was determined on dilutions series of 20 clinical isolates and ranged from 84 to 529 RNA copies/mL. For the assessment of trueness, 14 clinical samples were analyzed and the ViroSeq HIV-1 Genotyping System v2.0 was used as the reference standard. The mean nucleotide sequence identity between the two assays was 98.7% ± 1.0. Additionally, 99.0% of the amino acids at drug resistance positions were identical. The sensitivity and specificity in detecting drug resistance mutations was respectively 94.1% and 99.5%. Only few discordances in drug resistance interpretation patterns were observed. The repeatability and reproducibility were evaluated using 10 clinical samples with 3 replicates per sample. The in-house test was very precise as nucleotide sequence identity among paired nucleotide sequences ranged from 98.7% to 99.9%. The acceptance criteria were met by the in-house test for all performance characteristics, demonstrating a high degree of accuracy. Subsequently, the applicability in routine clinical practice was evaluated on 380 plasma samples. The amplification success rate was 91% and good quality consensus sequences encoding the entire protease and the first 335 codons in reverse transcriptase could be obtained for 99% of the successful amplicons. The reagent cost per sample using the in-house procedure was around € 80 per genotyping attempt. Overall, the in-house assay provided good results, was feasible with equipment and reagents available in Cuba and was half as expensive as commercial assays.

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INTRODUCTION Pneumococcal infections are a major cause of morbidity and mortality and are associated with considerable economic burden on health systems. To prevent pneumococcal infections, 7-valent conjugate vaccines have been available for over a decade; more recently, 10- and 13-valent conjugate vaccines have been formulated, which are more immunogenic than vaccines with capsular polysaccharides only. In Cuba, a new vaccine candidate has been developed, PCV7-TT, a conjugate of tetanus toxoid with antigens of seven of the serotypes of Streptococcus pneumoniae with highest circulation in Cuba and in the world: 1, 5, 6B, 14, 18C, 19F and 23F. OBJECTIVE Assess the safety of the vaccine candidate PCV7-TT in healthy adults and conduct a preliminary assessment of its immunogenicity. METHODS A phase I, double-blind clinical trial was performed at the National Toxicology Center in Havana, Cuba. Healthy male volunteers aged 18-35 years were randomly assigned to two groups: 20 received the vaccine candidate PCV7-TT and 20 the polyvalent antipneumococcal vaccine PNEUMO-23 used as control, each in a single intramuscular dose. To assess safety, the occurrence of adverse events was monitored for 30 days following inoculation. To explore immunogenicity, concentrations of serotype-specific antibodies was quantified before and 30 days after inoculation, as well titers of opsonophagocytic antibodies. (National Clinical Trial Registry RPCEC00000133) RESULTS Local adverse events were pain, redness, induration, increased sensitivity to touch, and warmth in the injection area. Pain was registered in 70% of individuals who received PCV7-TT and in 75% of those vaccinated with PNEUMO-23. Reported systemic adverse events were general malaise, headache and drowsiness. All adverse events appeared in the first 72 hours post inoculation and lasted no longer than 3 days. One event was reported that was classified as severe in intensity and serious in consequences, but it was unrelated to vaccination appendicitis in one individual inoculated with the control vaccine. Before vaccination, all participants but one had antibody concentrations =0.20 µg/ml against the vaccine strains; after vaccination 100% of individuals were positive and the concentrations of antibodies increased in previously positive volunteers. Some individuals had opsonophagocytic antibodies against serotypes 1, 14, 19F and 23F before vaccination, with highest concentrations against serotypes 14 and 19F. After vaccination, the percent of individuals with opsonophagocytic titers >1:8 for all serotypes in the vaccine was >50% in both groups. CONCLUSIONS A single dose of candidate vaccine PCV7-TT was safe when used in healthy adults. Preliminary results showed that it was able to activate an immune response against the serotypes of Streptococcus pneumoniae used. KEYWORDS Invasive pneumococcal diseases, pneumococcal vaccines, conjugate vaccines, immunization, randomized clinical trial, safety, Cuba.

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PURPOSE: In Cuba, viral monitoring in the post-transplant period was not routinely performed. The aim of this research is to identify the most frequent viruses that affect transplanted Cuban children, by implementing a viral follow-up during the post-transplant period. METHODS: The study population included all Cuban pediatric patients who underwent solid organ transplantation (SOT) between November 2009 and December 2012. A total of 34 transplanted pediatric patients of kidney (n = 11) and liver (n = 23) were prospectively monitored during a 34-week period for viral DNAemia and DNAuria by simultaneous detection of cytomegalovirus (CMV), Epstein-Barr virus, herpes simplex virus type 1 and 2, varicella zoster virus, human herpesvirus 6, human adenovirus, and polyomaviruses (BKV and JCV) using quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS: Viral genome of at least one virus was detected in 21 of 34 recipients, 18 patients excreted virus in urine while 12 presented DNAemia. CMV (41.2%) and BKV (35.3%) were the most frequent viruses detected during the follow-up. CMV was the virus mainly associated with clinical symptoms and DNAemia. Its excretion in urine (with cut off value of 219 copies/mL) was associated with detection in plasma (p < 0.001); furthermore, CMV viruria was predictive of CMV viremia (OR:8.4, CI:2.4-29.1, p = 0.001). There was no association between high viral load and clinical complications, due to the prompt initiation of preemptive ganciclovir. CONCLUSION: This comprehensive viral monitoring program effectively prevents the development of critical viral disease, thus urge the implementation of qRT-PCR as routine for viral monitoring of transplanted Cuban organ recipients.

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OBJECTIVE: This study aimed to provide information about the molecular epidemiology of human papillomavirus (HPV) in a group of Cuban women. MATERIALS AND METHODS: DNA from cervical samples was analyzed using a quantitative real-time polymerase chain reaction (PCR), which detects 6 of the clinically most relevant high-risk HPV types. Furthermore, end point PCR and sequencing were performed. Three hundred twenty-two women (211 with positive and 111 with negative cytologic results) aged between 30 and 69 years were enrolled. Risk factors associated with HPV infections and premalignant lesions were also investigated. RESULTS: HPV DNA was detected in 76.1% (245/322) of the studied population, and 34 different genotypes were found. There was an association between HPV infection and low educational level, history of oral contraceptives, menopausal stage, as well as cigarette and/or alcohol consumption. Besides, in a multivariate analysis, previous positive Pap test result and positive colposcopy finding were both predictor variables for HPV infections and for premalignant lesions. Human papillomavirus infection was found in 94.3% of women (199/211) with positive cytologic result and in 41.4% (46/111) of those with negative results, being more likely that the first group was infected with any HPV (odds ratio = 23.43; 95% CI = 11.70-46.92; p = .000). The most common genotypes were HPV types 16, 18, 31, 58, 33, and 45. All the cases with HPV positive findings had at least 1 high-risk HPV genotype. CONCLUSIONS: This is the first report of the molecular epidemiology of HPV in Cuban women, based on results from a DNA sequence and quantitative PCR. Most individuals were infected with high-risk HPV types. These findings support the inclusion of HPV vaccine in Cuba.

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