Chemoprotective effects of Ulva lactuca (green seaweed) aqueous-ethanolic extract against subchronic exposure to benzo(a)pyrene by CYP1A1 inhibition in mice.

The protective effect of the supplementation with an aqueous-ethanolic extract obtained from Ulva lactuca (Delile) green seaweed on benzo[a] pyrene-induced damage in mice was evaluated. Animals were treated with oral doses of U. lactuca extract (100 and 400 mg/kg) for 9 weeks. They were exposed to 50 mg/kg of oral doses of benzo(a)pyrene starting from the second week and up to the fifth week. Groups treated with benzo(a)pyrene only (second to fifth weeks), sunflower oil (vehicle, 9 weeks), or U. lactuca extract (100 and 400 mg/kg, 9 weeks) were also included in the study. The treatment with 400 mg/kg of the extract ameliorated the oxidative damage, decreased IL-1ß and TNF-α levels, and favorably regulated the antioxidant defenses compared with benzo(a)pyrene-exposed group. The benzo(a)pyrene-induced DNA damage was also reduced, as it was evidenced by the lower micronucleus formation in U. lactuca extract-supplemented animals. The extract protected the hepatic tissue, and it reduced the liver activity/expression of CYP1A1. These results altogether suggested a chemoprotective effect of U. lactuca extract against benzo(a)pyrene-induced-toxicity in mice, probably associated with an inhibitory effect of carcinogen bioactivation.

Prevalence of ABCB1 3435C>T polymorphism in the Cuban population.

OBJECTIVES: ABCB1 gene polymorphisms can modify P-glycoprotein function with clinical consequences. METHODS: The 3435C>T polymorphism prevalence was analyzed using oligonucleotide probes and next-generation sequencing in 421 unrelated healthy individuals living in Cuba. Data were stratified by gender, ethnic background and residence. The genotype and allelic frequencies were determined. RESULTS: The genotype distribution met the Hardy-Weinberg equilibrium assumption. The allelic frequency was 63.5% for the 3435C variant. The genotype frequencies were 41.1% for CC, 44.9% for CT and 14.0% for TT. The allele and genotype distributions differed between individuals living in La Habana and Santiago de Cuba (p<0.05) when ethnic background was analyzed. The allelic distribution was similar among Admixed and Black subjects, and they differed from Caucasians. The CC genotype was equally distributed among Admixed and Black subjects, and they differed from Caucasians. The TT genotype frequency differed between Caucasians and Admixed. The CT genotype was distributed differently among the three groups. Similar distribution was obtained in Brazilians, whereas some similarities were observed in African, Spanish and Chinese populations, consistent with the mixed Cuban ethnic origin. CONCLUSIONS: This is the first report on allele and genotype frequencies of the 3435C>T polymorphism in Cuba, which may support personalized medicine programs.

Percepción de pacientes respecto a la enfermedad periodontal en la Clínica Estomatológica Docente Julio Antonio Mella, Guantánamo / Perception of patients about periodontal disease at the Julio Antonio Mella Teaching Stomatological Clinic, Guantanamo

RESUMEN Introducción: Las enfermedades periodontales son un problema de salud bucal, y para prevenirlas es esencial el cuidado de las encías. Objetivo: Precisar la percepción de pacientes afectados sobre esta enfermedad para sustentar la sistematización de las bases teóricas dirigidas a la preparación de estudiantes de Estomatología y estomatólogos generales integrales en formación respecto al tema. Método: Se realizó un estudio descriptivo, prospectivo y transversal en la Clínica Estomatológica Docente "Julio Antonio Mella" adscrita la Universidad de Ciencias Médicas Guantánamo. Se encuestaron 25 pacientes con diagnóstico de enfermedad periodontal para indagar su percepción sobre la enfermedad. Los resultados se resumieron mediante frecuencias absolutas y se expresaron mediante tablas. Resultados: Lo más común es que los pacientes revelaran una opinión desfavorable en relación con los temas: expresión de una empobrecida educación sobre esta enfermedad (n=22), actitud insuficiente para el autocuidado de las encías (n=22) e Insatisfacciones con las acciones educativas en función de su prevención (n=14). Conclusiones: Los pacientes revelan una inadecuada percepción de la enfermedad periodontal lo que sustenta la sistematización de las bases teóricas para la comprensión de la necesidad de desarrollar en ellos una cultura del cuidado de las encías por una salud periodontal. Además, se reitera el valor del estomatólogo, la familia, la escuela, los medios y la comunidad como agentes sociales responsable de la educación de la población en función de la prevención de las enfermedades periodontales.

ABSTRACT Introduction: Periodontal diseases are caused by an inadequate oral health, and to prevent them, gum care is essential. Objective: To specify the perception of affected patients about this disease in order to support the systematization of the theoretical bases directed to the preparation in the subject of students of stomatology and comprehensive general stomatologists in training. Method: A descriptive, prospective and cross-sectional study was carried out in the Stomatological Teaching Clinic "Julio A. Mella", a branch of the University of Medical Sciences of Guantanamo. Twenty-five patients with diagnosis of periodontal disease were surveyed to as cert a in their perception of the disease. The results were summarized by means of absolute frequencies and expressed in tables. Results: it was common that patients revealed an un favor able opinion regarding the following topics: absolute lack of knowledge about this disease (n=22), insufficient posture of the patients about gum self-care (n=22) and dissatisfaction with educational actions in terms of prevention (n=14). Conclusions: Patients reveal an inadequate perception of periodontal disease which supports the systematization of the theoretical bases for the understanding of the need to develop in them a culture of gum care for a good periodontal health. Furthermore, the value of the stomatologist, the family, the school, the media and the community as social agents responsible for the education of the population in terms of the prevention of periodontal diseases is reiterated.

Gas Chromatography-Mass Spectrometry Analysis of Ulva fasciata (Green Seaweed) Extract and Evaluation of Its Cytoprotective and Antigenotoxic Effects.

The chemical composition and biological properties of Ulva fasciata aqueous-ethanolic extract were examined. Five components were identified in one fraction prepared from the extract by gas chromatography-mass spectrometry, and palmitic acid and its ethyl ester accounted for 76% of the total identified components. Furthermore, we assessed the extract's antioxidant properties by using the DPPH, ABTS, and lipid peroxidation assays and found that the extract had a moderate scavenging effect. In an experiment involving preexposition and coexposition of the extract (1-500 µg/mL) and benzo[a]pyrene (BP), the extract was found to be nontoxic to C9 cells in culture and to inhibit the cytotoxicity induced by BP. As BP is biotransformed by CYP1A and CYP2B subfamilies, we explored the possible interaction of the extract with these enzymes. The extract (25-50 µg/mL) inhibited CYP1A1 activity in rat liver microsomes. Analysis of the inhibition kinetics revealed a mixed-type inhibitory effect on CYP1A1 supersome. The effects of the extract on BP-induced DNA damage and hepatic CYP activity in mice were also investigated. Micronuclei induction by BP and liver CYP1A1/2 activities significantly decreased in animals treated with the extract. The results suggest that Ulva fasciata aqueous-ethanolic extract inhibits BP bioactivation and it may be a potential chemopreventive agent.

Autocuidado de las encías y salud periodontal / Autocuidado das gengivas e saúde periodontal / Self-care of the gingiva and periodontal health

Introducción: en Cuba se prioriza la atención a la salud bucal, la que está determinada por diferentes factores, entre los que prevalece la incidencia de la enfermedad periodontal que hoy se reconoce como problema de salud, pues daña el bienestar biopsicosocial del individuo. Objetivo: brindar a los estomatólogos las bases teóricas que le permitan enriquecer su preparación respecto al tema enfermedad periodontal y de esta manera mejorar su contribución a su prevención desde el nivel de atención primaria a la salud bucal. Método: se sistematizaron los referentes relacionados con la enfermedad periodontal en la Facultad de Ciencias Médicas de Guantánamo, en el período de enero a julio de 2017. Resultados: el primer estadío de la enfermedad periodontal se conoce como gingivitis. La enfermedad periodontal incide hasta en un 20 % de la población mundial. El cuidado de las encías para la prevención de la enfermedad periodontal requiere que el individuo se apropie de los saberes esenciales que le posibiliten esta finalidad, a fin de que sean capaces de percibir el riesgo de ella y contribuir con las acciones dirigidas a la protección o restauración de la salud periodontal. Conclusiones: se ofrecen bases teóricas para la comprensión de la necesidad de desarrollar en los pacientes una cultura del cuidado de las encías por una salud periodontal. Se reitera el valor de estomatólogo, la familia, la escuela, los medios y la comunidad como agentes sociales responsables de la educación de la población en función de la promoción de salud periodontal y la prevención de las enfermedades periodontales(AU)

Introduction: in Cuba attention to oral health is prioritized, which is determined by various factors, including incidence of periodontal disease that now a day is recognized as a health problem, it damages the individual as well as biopsicosocial well-being. Objective: stomatologists provide the theoretical bases that allow them to enrich their preparation on the subject periodontal disease thus improve their contribution to prevent primary care level to oral health. Method: the references related to periodontal disease in the Faculty of Medical Sciences of Guantanamo are systematized, from January to July 2017. Results: first stage of periodontal disease is known as gingivitis. Periodontal disease affects 20% of the world population. The gingiva care to prevent periodontal disease requires the individual to appropriate the essential knowledges that will enable this purpose, so that they are able to perceive the risk of it and contribute to actions with the aim of protecting periodontal health. Conclusions: theoretical basis for understanding the need to develop in patients offer culture of gingival care by a periodontal health. The value of stomatology, family, school, community media and reiterated responsible for education as social agents of the population depending on periodontal health promotion and prevention of periodontal diseases(AU)

Introdução: Cuba atenção à saúde bucal é priorizada, que é determinada por vários fatores, incluindo a incidência de doença periodontal que prevalece é agora reconhecida como um problema de saúde, ele danifica o bem-estar biopsicossocial do indivíduo. Objetivo: fornecer aos estomatologistas as bases teóricas que lhes permitirão enriquecer seu preparo em relação à questão da doença periodontal e, assim, melhorar sua contribuição para sua prevenção, desde o nível de atenção primária até a saúde bucal. Método: os referentes à doença periodontal foram sistematizados na Faculdade de Ciências Médicas de Guantánamo, no período de janeiro a julho de 2017. Resultados: o primeiro estágio da doença periodontal é conhecido como gengivite. A doença periodontal afeta até 20% da população mundial. O cuidado das gengivas para a prevenção da doença periodontal exige que o indivíduo se aproprie dos conhecimentos essenciais que possibilitam esse propósito, para que eles sejam capazes de perceber o risco dele e contribuir com as ações voltadas à proteção ou Restauração da saúde periodontal. Conclusões: bases teóricas são oferecidas para a compreensão da necessidade de desenvolver em pacientes uma cultura de cuidado gengival para a saúde periodontal. O valor do estomatologista, da família, da escola, da mídia e da comunidade são reiterados como agentes sociais responsáveis pela educação da população em termos de promoção da saúde periodontal e prevenção de doenças periodontais(AU)

Autocuidado de las encías y salud periodontal / Self-care of the gingiva and periodontal health

Introducción: en Cuba se prioriza la atención a la salud bucal, la que está determinada por diferentes factores, entre los que prevalece la incidencia de la enfermedad periodontal que hoy se reconoce como problema de salud, pues daña el bienestar biopsicosocial del individuo. Objetivo: brindar a los estomatólogos las bases teóricas que le permitan enriquecer su preparación respecto al tema enfermedad periodontal y de esta manera mejorar su contribución a su prevención desde el nivel de atención primaria a la salud bucal. Método: se sistematizaron los referentes relacionados con la enfermedad periodontal en la Facultad de Ciencias Médicas de Guantánamo, en el período de enero a julio de 2017. Resultados: el primer estadío de la enfermedad periodontal se conoce como gingivitis. La enfermedad periodontal incide hasta en un 20 por ciento de la población mundial. El cuidado de las encías para la prevención de la enfermedad periodontal requiere que el individuo se apropie de los saberes esenciales que le posibiliten esta finalidad, a fin de que sean capaces de percibir el riesgo de ella y contribuir con las acciones dirigidas a la protección o restauración de la salud periodontal. Conclusiones: se ofrecen bases teóricas para la comprensión de la necesidad de desarrollar en los pacientes una cultura del cuidado de las encías por una salud periodontal. Se reitera el valor de estomatólogo, la familia, la escuela, los medios y la comunidad como agentes sociales responsables de la educación de la población en función de la promoción de salud periodontal y la prevención de las enfermedades periodontales(AU)

Introduction: in Cuba attention to oral health is prioritized, which is determined by various factors, including incidence of periodontal disease that now a day is recognized as a health problem, it damages the individual as well as biopsicosocial well-being. Objective: stomatologists provide the theoretical bases that allow them to enrich their preparation on the subject periodontal disease thus improve their contribution to prevent primary care level to oral health. Method: the references related to periodontal disease in the Faculty of Medical Sciences of Guantanamo are systematized, from January to July 2017. Results: first stage of periodontal disease is known as gingivitis. Periodontal disease affects 20 percent of the world population. The gingiva care to prevent periodontal disease requires the individual to appropriate the essential knowledges that will enable this purpose, so that they are able to perceive the risk of it and contribute to actions with the aim of protecting periodontal health. Conclusions: theoretical basis for understanding the need to develop in patients offer culture of gingival care by a periodontal health. The value of stomatology, family, school, community media and reiterated responsible for education as social agents of the population depending on periodontal health promotion and prevention of periodontal diseases(AU)

Introdução: Cuba atenção à saúde bucal é priorizada, que é determinada por vários fatores, incluindo a incidência de doença periodontal que prevalece é agora reconhecida como um problema de saúde, ele danifica o bem-estar biopsicossocial do indivíduo. Objetivo: fornecer aos estomatologistas as bases teóricas que lhes permitirão enriquecer seu preparo em relação à questão da doença periodontal e, assim, melhorar sua contribuição para sua prevenção, desde o nível de atenção primária até a saúde bucal. Método: os referentes à doença periodontal foram sistematizados na Faculdade de Ciências Médicas de Guantánamo, no período de janeiro a julho de 2017. Resultados: o primeiro estágio da doença periodontal é conhecido como gengivite. A doença periodontal afeta até 20 por cento da população mundial. O cuidado das gengivas para a prevenção da doença periodontal exige que o indivíduo se aproprie dos conhecimentos essenciais que possibilitam esse propósito, para que eles sejam capazes de perceber o risco dele e contribuir com as ações voltadas à proteção ou Restauração da saúde periodontal. Conclusões: bases teóricas são oferecidas para a compreensão da necessidade de desenvolver em pacientes uma cultura de cuidado gengival para a saúde periodontal. O valor do estomatologista, da família, da escola, da mídia e da comunidade são reiterados como agentes sociais responsáveis pela educação da população em termos de promoção da saúde periodontal e prevenção de doenças periodontais(AU)