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BACKGROUND: miRNAs are non-coding RNAs participating actively in the post-translational regulation of oncogenes, tumor suppressor, and DNA repair genes implicated in colorectal cancer (CRC). This study aims to examine the association of the variants miR-27a (rs895819 A>G), miR-196a2 (rs11614913 T>G) and miR-146a (rs2910164 C>G) in Mexican CRC patients. METHODS: DNA samples from 183 patients and 186 healthy Mexican subjects were analyzed. Variants were identified by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) methodology. Association was calculated by the odds ratio (OR) and adjusted by the Bonferroni test. RESULTS: Patients carrying the G/G genotype of the rs895819 variant in the miR-27a gene showed an increased risk of CRC (19% vs 12%, P=0.013). A similar tendency was noticed for patients younger than 50 years carrying A/G (48% vs 41%, P=0.014). The A/G genotype in TNM stages I+II (55.7% vs 40.8%, P=0.011) and tumor location in the colon (69.5 vs 40.8%, P=0.001) were also increased. For the variant rs11614913 of the miR-196a2 gene, carriers of the C/C genotype showed an increased risk of CRC (32% vs 22%, P=0.009). This genotype was more frequent in TNM stage III+IV (36.8% vs 22.5%, P=0.007) and the tumor had a more recurrent location in the rectum (31.6% vs 22.5%, P=0.013). The rs2910164 variant of the miR-146a gene was found to have no significant risk associations. CONCLUSION: Our results reveal that the rs895819 variant in miR-27a and rs11614913 in miR-196a2 have a substantial impact on the development of CRC.
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Neoplasias Colorretais , MicroRNAs , Humanos , Estudos de Casos e Controles , Neoplasias Colorretais/genética , Predisposição Genética para Doença , Genótipo , MicroRNAs/genética , Polimorfismo de Nucleotídeo ÚnicoRESUMO
RESUMEN Introducción: Aedes aegypti y Aedes albopictus constituyen dos de las especies más importantes de mosquitos, debido a que son vectores primarios de enfermedades emergentes y reemergentes que representan una amenaza significativa para la salud pública. Objetivo: Evaluar el efecto de la competencia larvaria intraespecífica causada por baja y alta densidad de dos poblaciones de Ae. aegypti y Ae. albopictus sobre aspectos de su ciclo de vida en condiciones de laboratorio. Métodos: Se utilizaron dos poblaciones de mosquitos, Ae. aegypti y Ae. albopictus, ambas colectadas en estado de larva en el Reparto Juan de Dios Fraga, La Lisa, La Habana, Cuba. Se establecieron condiciones de baja (70 larvas) y alta densidad larvaria (140 larvas) en cada réplica para cada una de las especies. Se emplearon larvas desde el primer estadio, que se siguieron hasta la formación de los adultos. Se evaluaron las variables duración del ciclo larvario, supervivencia larvaria, así como talla y supervivencia de hembras adultas, respectivamente. Resultados: Se encontró que las variables evaluadas no se afectaron en condiciones de baja densidad larvaria. Sin embargo, el efecto de la relación larvaria intraespecífica bajo condiciones de alta densidad presentada en los hábitats de Ae. aegypti y Ae. albopictus tuvo un efecto negativo en cada una de las variables del ciclo de vida evaluadas. Conclusiones: Estas alteraciones observadas son importantes dentro de los componentes de la capacidad vectorial, con implicaciones en la epidemiología de las enfermedades transmitidas por estos mosquitos. Los resultados pudieran extrapolarse al comportamiento de estos mosquitos en su entorno natural. Estas condiciones podrían aumentar los patrones de transmisión del virus del dengue, así como un mayor riesgo de infección para la población humana.
ABSTRACT Introduction: Aedes aegypti and Aedes albopictus are two of the most important mosquito species, since they are the main vector of emerging and re-emerging diseases that represent a significant threat to public health. Objective: To evaluate the effect of intraspecific larval competence caused by low and high density in two populations of Ae. aegypti and Ae. albopictus on aspects of their life cycles under laboratory conditions. Methods: Two mosquitos populations were used, Ae. aegypti and Ae. albopictus, both collected during their larval stage in Juan de Dios Fraga town, La Lisa, Havana, Cuba. Low (70 larvae) and high (140 larvae) density conditions were established in each replication for each species. Larvae from the first stage were used and follow-up was established until adults emerged. Variables such as: larval cycle duration, larval survival, and adult female size and survival were evaluated. Results: The variables evaluated were not affected under low larval density conditions. However, the intraspecific larval relationship under high density conditions in Ae. aegypti and Ae. albopictus habitats had a negative effect in each of the variables of the life cycles. Conclusions: The observed alterations are important within the components of vectorial capacity, with implications for the epidemiology of these mosquitos-borne diseases. The results could be extended to the behavior of these mosquitoes in their natural environment. These conditions could increase the transmission patterns of dengue virus and the risk of infection for the human population.
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AnimaisRESUMO
RESUMEN La zona riparia presenta cambios de vegetación nativa por uso del suelo, asociados a actividades antrópicas, como urbanización, ganadería y agricultura, lo que genera pérdida de diversidad, composición y estructura de la vegetación riparia. En este estudio, se analizó la diversidad florística y estructural de la vegetación riparia a lo largo de un gradiente urbano-natural del río Pitillal - Jalisco, México. Sobre el río Pitillal, se seleccionaron cuatro sitios, siguiendo el gradiente urbano (SU), periurbano (SP), rural (SR) y natural (SN). En cada tramo, se realizaron cuatro parcelas de muestreo, identificando árboles, arbustos, lianas y hierbas. La diversidad florística, se analizó comparando composición, abundancia y riqueza por tipo de planta y origen. La diversidad estructural, se analizó comparando diámetro de tronco, altura total, área de copa, profundidad de copa y perfiles verticales de vegetación. En total, se registraron 508 individuos de 412 familias, 72 géneros y 160 especies y morfoespecies; 75 especies fueron nativas y 10 introducidas. La riqueza específica y abundancia de los árboles fue distinta entre sitios, incrementándose notablemente en el SN. Las especies introducidas disminuyen del SU al SN. El diámetro de tronco, área y profundidad de copa muestran diferencias significativas entre sitios. Los perfiles verticales de la vegetación riparia muestran patrones más heterogéneos en el SN. Los resultados sugieren que la alteración por uso de suelo adyacente al río Pitillal afecta, claramente, la diversidad florística, la composición y la estructural de la vegetación riparia.
ABSTRACT Riparian zone presents changes of native vegetation due to land use associated with anthropic activities, such as urbanization, cattle, and agriculture, which generated the loss of diversity, composition, and structure of the riparian vegetation. In this study, floristic diversity and structural diversity of riparian vegetation was analyzed along an urban-natural gradient of Pitillal River, Jalisco, Mexico. On the Pitillal River, four sites were selected following the urban (SU), peri-urban (SP), rural (SR) and natural (SN) gradient. In each section, four sample plots were sampled, identifying trees, shrubs, lianas, and herbs. Floristic diversity was analyzed by comparing composition, abundance, and specific richness by type of plant and origin. Structural diversity was analyzed by comparing trunk diameter, total height, crown area, crown depth and vertical profiles of vegetation. A total of 508 individuals in 412 families, 72 genera and 160 species and morpho species were registered; 75 species were native and 10 introduced. Richness and abundance of the trees was different between sites, increasing notably in the SN. Introduced species decrease from SU to SN. The diameter of the trunk, area and depth of the crown show significant differences between sites. The vertical profiles of the riparian vegetation showed more heterogeneous patterns in the SN. The results suggest that changes due to land use adjacent to Pitillal River have clearly affected the composition, floristic and structural diversity of riparian vegetation.
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RESUMEN Introducción. Actualmente la tasa de nacimientos a nivel mundial es de 18,8% y en el Perú es de 10%. Las principales causas de mortalidad neonatal son los partos pre termino, infecciones y defectos congénitos. La unidad de cuidados intensivos neonatales es el área que se encarga de la atención de los recién nacidos en estado crítico, siendo indispensable la obtención de una vía de acceso venoso central adecuada para su tratamiento. Objetivo. Describir la utilización del catéter percutáneo de inserción periférica en la Unidad de Cuidados Intensivos Neonatales del Instituto Nacional de Salud del Niño Breña, periodo junio 2017 - junio 2019. Métodos. Estudio descriptivo, observacional, retrospectivo, transversal. La muestra fue intencional conformada aproximadamente por 110 historias clínicas de recién nacidos que estuvieron hospitalizados en la unidad de cuidados intensivos neonatales. La técnica la observación y el instrumento la lista de chequeo. Resultados. El 51,8% fueron neonatos con patología quirúrgica. Asimismo, el 36,4% tuvieron una edad gestacional menor o igual de 32 semanas, la vena más usada fue la basílica con un 27,3%, el 37,3% de los catéteres fueron retirados por sospecha de sepsis y las puntas enviadas a cultivo. Conclusiones. El cuidado en el procedimiento y mantenimiento del catéter percutáneo fue el adecuado, presentándose un bajo número de complicaciones.
ABSTRACT Introduction. Currently the birth rate worldwide is 18.8% and in Peru it is 10%. The main causes of neonatal mortality are preterm births, infections and congenital defects. The neonatal intensive care unit is the area that is responsible for the care of newborns in critical condition, obtaining an adequate central venous access route for their treatment is essential. Objective. To describe the use of the percutaneous peripheral insertion catheter in the Neonatal Intensive Care Unit of the Instituto Nacional de Salud del Niño Breña, period June 2017 - June 2019. Methods. The study was descriptive, observational, retrospective, cross-sectional. The intentional sample was made up of approximately 110 medical records of newborns who were hospitalized in the neonatal intensive care unit. The technique the observation and the instrument the checklist. Results. 51.8% were neonates with surgical pathology. Likewise, 36.4% had a gestational age less than or equal to 32 weeks, the most used vein was the basilica with 27.3%, 37.3% of the catheters were removed due to suspected Sepsis and the tips were sent for culture. Conclusions. The care in the procedure and maintenance of the percutaneous catheter was adequate, presenting a low number of complications.
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The purpose of this pilot study was to evaluate and determine the concentration of prostaglandin GF2α (PGF2α) and isoprostane 8-iso-PGF2α in plasma and intestine of specific pathogen-free (SPF) Leghorn chickens challenged with Eimeria maxima, with or without dietary supplementation of curcumin using solid-phase microextraction and ultra-performance liquid chromatography/tandem mass spectrometry. Eighty 1-day-old male SPF chickens were randomly allocated to one of four groups with four replicates (n = 5 chickens/replicate). Groups consisted of: (1) Control (no challenge), (2) Curcumin (no challenge), (3) Eimeria maxima (challenge), and (4) Eimeria maxima (challenge) + curcumin. At day 28 of age, all chickens in the challenge groups were orally gavaged with 40,000 sporulated E. maxima oocysts. No significant differences (P > 0.05) were observed in the groups regardless of the treatment or challenge with E. maxima. Enteric levels of both isoprostane 8-iso-PGF2α and PGF2α at 7 days and 9 days post-challenge were significantly increased (P < 0.01) compared to the non-challenge control chickens. Interestingly, the enteric levels of both isoprostane 8-iso-PGF2α and PGF2α at 7 days post-challenge were significantly reduced in chickens fed curcumin, compared to control chickens challenge with E. maxima. At 9 days post-challenge, only levels of isoprostane 8-iso-PGF2α in the enteric samples were significantly reduced in chickens challenged with E. maxima supplemented with curcumin, compared with E. maxima challenge chickens. No differences of isoprostane 8-iso-PGF2α or PGF2α were observed in plasma at both days of evaluation. Similarly, no significant differences were observed between the challenge control or chickens challenge with E. maxima and supplemented with curcumin at both times of evaluation. The results of this pilot study suggests that the antioxidant anti-inflammatory properties of curcumin reduced the oxidative damage and subsequent intestinal mucosal over-production of lipid oxidation products. Further studies to confirm and extend these results in broiler chickens are required.
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Anti-Inflamatórios/farmacologia , Coccidiose/tratamento farmacológico , Curcumina/farmacologia , Dinoprosta/análogos & derivados , Dinoprosta/antagonistas & inibidores , Eimeria/efeitos dos fármacos , Doenças das Aves Domésticas/tratamento farmacológico , Ração Animal , Animais , Animais Recém-Nascidos , Galinhas/crescimento & desenvolvimento , Galinhas/parasitologia , Coccidiose/metabolismo , Coccidiose/parasitologia , Coccidiose/veterinária , Suplementos Nutricionais , Dinoprosta/metabolismo , Eimeria/crescimento & desenvolvimento , Eimeria/patogenicidade , Inflamação , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/metabolismo , Mucosa Intestinal/parasitologia , Masculino , Oocistos/efeitos dos fármacos , Oocistos/crescimento & desenvolvimento , Oocistos/patogenicidade , Estresse Oxidativo , Doenças das Aves Domésticas/metabolismo , Doenças das Aves Domésticas/parasitologia , Organismos Livres de Patógenos EspecíficosRESUMO
This study shows a diagnostic and therapeutic gap for osteoporosis in patients with fragility fractures of the hip, distal radius, and vertebrae. Patients with fragility fractures treated in Mexico fail to receive an osteoporosis diagnosis, referral, and follow-up treatment. The therapeutic gap is higher than reported in other countries. INTRODUCTION: Osteoporosis is a highly prevalent and disabling disease. While there is typically a gap between osteoporosis diagnosis and treatment after a fragility fracture, this gap has not been measured in Mexico. The study aimed to describe and quantify the gap between osteoporosis diagnosis and treatment after an incident fragility fracture. MATERIALS AND METHODS: A descriptive and 3-year retrospective chart review study was conducted on patients over the age of 50 with a diagnosis of an incident acute low-energy fracture of either the hip, distal radius, or vertebrae. RESULTS: We included 838 patients with a mean age of 76.3 ± 12.2 years. The sample was mostly women (665 participants, 79.4%); 589 (70.3%) had a hip fracture, 173 (20.6%) had a distal radius fracture, and 76 (9.1%) had a vertebral fracture. Only 28 (3.3%) had a previous diagnosis and were taking a pharmacological treatment for osteoporosis; 11 (1.3%) received their diagnosis while hospitalized. Immediately after the fracture, and 1 and 3 years later, 144 (17.1%), 71 (8.4%), and 96 (11.4%) respectively received a pharmacological treatment, 195 (23.2%), 65 (7.7%), and 45 (5.3%) supplementation, and 16 (1.9%), 16 (1.9%), and 21 (2.5%) a non-pharmacologic treatment. No significant differences in treatment prescriptions were found after a second or third fracture. CONCLUSION: The study quantifies the too high frequency of failure to diagnose and treat osteoporosis in patients with fragility fractures. Measures should be established to reduce the yawning gap between osteoporosis diagnosis and treatment after a fragility fracture.
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Conservadores da Densidade Óssea , Osteoporose , Fraturas por Osteoporose , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , México/epidemiologia , Pessoa de Meia-Idade , Osteoporose/diagnóstico , Osteoporose/tratamento farmacológico , Osteoporose/epidemiologia , Fraturas por Osteoporose/diagnóstico , Fraturas por Osteoporose/epidemiologia , Fraturas por Osteoporose/terapia , Estudos RetrospectivosRESUMO
A new, rapid, simple and specific method to determine 5-chloro 8-hydroxyquinoline (5-HQ) and 5,7-dichloro 8-hydroxyquinoline (5,7-HQ) stability in swine feed was optimized and validated. A system consisting of an ACQUITY UPLC BEH C18 column (1.7 µm, 2.1 mm × 100 mm), a mobile phase of acetonitrile-0.1% o-phosphoric acid (55:45 v/v) with a 0.5 mL/min flow rate, and a PDA detector (247 nm) were used. The retention times of 5-HQ and 5,7-HQ, were 0.77 min and 1.6 min, respectively. The pure drug was subjected to acid and alkali hydrolysis, chemical oxidation and UV light degradation to perform forced degradation studies. 5,7-HQ was more susceptible to degradation than 5-HQ. The figures of merit of the method (linearity, accuracy, precision, and robustness) were determined. The method was successfully applied to estimate the stability of both analytes in medicated feed.
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Ração Animal/análise , Cloroquinolinóis/análise , Cromatografia Líquida de Alta Pressão/métodos , Cromatografia Líquida de Alta Pressão/instrumentação , Confiabilidade dos Dados , Estabilidade de Medicamentos , Hidrólise , Oxirredução , Reprodutibilidade dos Testes , Raios UltravioletaRESUMO
Objetivo: determinar las características epidemiológicas y clínicas de la retinopatía de la prematuridad en Sancti Spíritus desde el año 2004 al 2015. Métodos: se realizó un estudio descriptivo, retrospectivo, en 1 165 recién nacidos prematuros examinados. Se empleó el análisis descriptivo, sustentado en el empleo de gráficos y tablas de distribución de frecuencia, considerando las tasas de incidencia y de prevalencia, así como las variables clínicas relacionadas con la entidad. Resultados: la retinopatía de la prematuridad presentó tasas de incidencia similares a las cubanas y menores a las de algunos países; también tasas de prevalencia en incremento. Los municipios con más pacientes diagnosticados fueron Sancti Spíritus, Cabaiguán y Jatibonico. En la pesquisa existió un predominio de los varones (54,5 opr ciento) y el color de la piel blanca (54,8 por ciento). Los factores de riesgo más frecuentes en los 108 pacientes con retinopatía de la prematuridad fueron la edad gestacional al nacimiento baja, el bajo peso extremo y el apgar bajo. Los grados de la entidad que más se presentaron en el período fueron el I y III. La fotocoagulación con láser fue el tratamiento aplicado a los pacientes que lo requirieron. Conclusiones: la retinopatía de la prematuridad es una realidad en la provincia espirituana, donde esta enfermedad presenta una relación directa con la prematuridad extrema, y su manejo ha sido oportuno en los pacientes que la han desarrollado(AU)
Objective: to determine the epidemiological and clinical characteristics of retinopathy of prematurity in Sancti Spíritus province from 2004 to 2015. Methods: retrospective and descriptive study of 1 165 examined premature newborns. Descriptive analysis based on the use of charts and frequency distribution tables and considering incidence and prevalence rates as well as related clinical variables was used. Results: retinopathy of prematurity showed incidence rates similar to those at national level and lower than those of other countries whereas the prevalence rates were increasing. The municipalities with higher numbers of diagnosed patients were Sancti Spíritus, Cabaiguán and Jatibonico; males (54,5 percent) and Caucasians (54,8 percent) predominated. The most frequent risk factors in the 108 patients with retinopathy of were the low gestacional age, the extreme low weight and low Apgar. The main grades of retinopathy in the period were I and III. The laser photocoagulation was the treatment given to patients that required it. Conclusions: retinopathy of prematurity is a real situation in Sancti Spíritus province and had a direct relationship with extreme prematurity. Timely management of the disease has been observed in affected patients(AU)
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Humanos , Feminino , Incidência , Fotocoagulação a Laser/efeitos adversos , Retinopatia da Prematuridade/epidemiologia , Fatores de Risco , Epidemiologia Descritiva , Estudos RetrospectivosRESUMO
Objetivo: describir la implementación del proceso de rehabilitación visual extendido a la Atención Primaria de Salud en el período 2011-2012. Métodos: se realizó una investigación con diseño experimental en 246 pacientes del Hospital General Camilo Cienfuegos, de la provincia de Sancti Spíritus, desde el año 2011 al 2012. Se implementó el proceso de rehabilitación visual en la Atención Primaria de Salud. Su efectividad se midió a través de indicadores como agudeza visual mejor corregida de cerca y continuidad con el uso de ayudas ópticas. Resultados: se alcanzó el 91,9 por ciento de pacientes rehabilitados y ninguno de ellos abandonó el proceso. La agudeza visual mejor corregida de cerca mejoró en relación con el inicio y los pacientes rehabilitados continuaron usando sus ayudas ópticas al asistir a la consulta evolutiva. Conclusiones: el número de pacientes con baja visión continúa en ascenso y la rehabilitación visual es el proceder que les permite reinsertarse a la sociedad. La implementación de este proceso en la Atención Primaria de Salud permite mejorar la agudeza visual mejor corregida de cerca en todos sus rangos(AU)
Objective: to describe the implementation of the extended visual rehabilitation process in the primary health care in the period of 2011 through 2012. Methods: an experimental research study was carried out in 246 patients from Camilo Cienfuegos General Hospital in Sancti Spíritus province from 2011 to 2012. The visual rehabilitation process was implemented in the primary health care and its effectiveness was measured with indicators such as best corrected near visual acuity and use of optical aids. Results: in this group, 91.9 percent of patients were rehabilitated and none of them quit the process. The best corrected near visual acuity improved when compared to that of the beginning of the process and the rehabilitated patients continued using their optic aids when going to the specialist's to see their progress. Conclusions : the number of patients with low vision is on the rise and visual rehabilitation is the procedure that allows them to be reincorporated into society. The implementation of this process in the primary health care allowed improving all the ranges of the best corrected near visual acuity(AU)