RESUMO
Este estudio analiza la prevalencia y características de comorbilidades en 534 niños con Síndrome de Down (SD) en la República Dominicana, entre 2018 y 2022. La investigación revela una detección temprana del SD, con una distribución equitativa de género. La mayoría de los casos resultaron de la no disyunción, con una asociación significativa entre la edad materna avanzada y el aumento en el riesgo de SD. Alrededor del 62.2% de los niños presentaron comorbilidades, con condiciones cardíacas como las más prevalentes, seguidas por comorbilidades endocrinas y neurológicas, principalmente hipotiroidismo y trastornos epilépticos. Las afecciones oftálmicas y otorrinolaringológicas también fueron comunes, destacando el estrabismo y la hipoacusia. Los hallazgos enfatizan la necesidad de un manejo temprano e integral adaptado a las características individuales y regionales de los pacientes con SD. (provisto por Infomedic International)
This study analyzes the prevalence and characteristics of comorbidities in 534 children with Down Syndrome (DS) in the Dominican Republic, between 2018 and 2022. The research reveals early detection of DS, with an equal gender distribution. Most cases resulted from nondisjunction, with a significant association between advanced maternal age and increased risk of DS. About 62.2% of the children had comorbidities, with cardiac conditions being the most prevalent, followed by endocrine and neurologic comorbidities, mainly hypothyroidism and seizure disorders. Ophthalmic and otorhinolaryngologic conditions were also common, with strabismus and hypoacusis standing out. The findings emphasize the need for early and comprehensive management adapted to the individual and regional characteristics of patients with DS. (provided by Infomedic International)
RESUMO
Reovirus is known to have an anticancer effect in both the preclinical and clinical assays. Current evidence suggests that the reovirus-mediated impact on tumor growth depends on the activation of specific antitumor immune responses. A feasible explanation for the oncolytic effects and immune system activation is through the expression of the fusogenic reovirus protein. In this work, we evaluated the in vivo antitumor effects of the expression of fusogenic protein p10 of avian reovirus (ARV-p10). We used chitosan nanoparticles (CH-NPs) as a vehicle for the ARV-p10 DNA in murine B16 melanoma models both in vitro and in vivo. We confirmed that ARV-p10 delivery through a chitosan-based formulation (ARV-p10 CH-NPs) was capable of inducing cell fusion in cultured melanoma cells, showing a mild cytotoxic effect. Interestingly, intratumor injection of ARV-p10 CH-NPs delayed tumor growth, without changing lymphoid populations in the tumor tissue and spleen. The injection of chitosan nanoparticles (CH-NPs) also delayed tumor growth, suggesting the nanoparticle itself would attack tumor cells. In conclusion, we proved that in vitro ARV-p10 protein expression using CH-NPs in murine melanoma cells induces a cytotoxic effect associated with its cell fusion. Further studies are necessary for establishing a protocol for efficient in vivo DNA delivery of fusion proteins to produce an antitumoral effect.
Assuntos
Vacinas Anticâncer , Melanoma Experimental , Orthoreovirus Aviário , Proteínas Recombinantes de Fusão , Proteínas Virais , Animais , Antineoplásicos/química , Antineoplásicos/farmacologia , Vacinas Anticâncer/química , Vacinas Anticâncer/genética , Vacinas Anticâncer/farmacologia , Sobrevivência Celular/efeitos dos fármacos , Quitosana/química , Sistemas de Liberação de Medicamentos/métodos , Camundongos , Camundongos Endogâmicos C57BL , Nanopartículas/química , Orthoreovirus Aviário/genética , Proteínas Recombinantes de Fusão/química , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/farmacologia , Transfecção , Proteínas Virais/química , Proteínas Virais/genéticaRESUMO
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