RESUMO
Background & aims. G-allele of PNPLA3 (rs738409) favours triglycerides accumulation and steatosis. In this study, we examined the effect of quercetin and natural extracts from mushroom and artichoke on reducing lipid accumulation in hepatic cells. MATERIAL AND METHODS: Huh7.5 cells were exposed to oleic acid (OA) and treated with quercetin and extracts to observe the lipid accumulation, the intracellular-TG concentration and the LD size. Sterol regulatory element binding proteins-1 (SREBP-1), peroxisome proliferator-activated receptor (PPARα-γ) and cholesterol acyltransferase (ACAT) gene expression levels were analysed. RESULTS: Quercetin decreased the intracellular lipids, LD size and the levels of intracellular-TG through the down-regulation of SREBP-1c, PPARγ and ACAT1 increasing PPARα. The natural-extracts suppressed OA-induced lipid accumulation and the intracellular-TG. They down-regulate the hepatic lipogenesis through SREBP-1c, besides the activation of lipolysis through the increasing of PPARα expression. CONCLUSIONS: Quercetin and the aqueous extracts decrease intracellular lipid accumulation by down-regulation of lipogenesis and up-regulation of lipolysis.
Assuntos
Hepatócitos/efeitos dos fármacos , Lipase/genética , Lipogênese/efeitos dos fármacos , Lipólise/efeitos dos fármacos , Proteínas de Membrana/genética , Hepatopatia Gordurosa não Alcoólica/prevenção & controle , Extratos Vegetais/farmacologia , Quercetina/farmacologia , Acetil-CoA C-Acetiltransferase/genética , Acetil-CoA C-Acetiltransferase/metabolismo , Agaricales , Linhagem Celular Tumoral , Cynara scolymus , Flores , Genótipo , Hepatócitos/metabolismo , Humanos , Lipase/metabolismo , Lipogênese/genética , Lipólise/genética , Proteínas de Membrana/metabolismo , Hepatopatia Gordurosa não Alcoólica/induzido quimicamente , Hepatopatia Gordurosa não Alcoólica/metabolismo , Ácido Oleico/toxicidade , PPAR alfa/genética , PPAR alfa/metabolismo , PPAR gama/genética , PPAR gama/metabolismo , Fenótipo , Proteína de Ligação a Elemento Regulador de Esterol 1/genética , Proteína de Ligação a Elemento Regulador de Esterol 1/metabolismoRESUMO
OBJECTIVE: Endothelial colony-forming cells (ECFCs) are a subset of circulating endothelial progenitor cells that are particularly abundant in umbilical cord blood. We sought to determine whether ECFC abundance in cord blood is associated with maternal body-mass index (BMI) in nonpathologic pregnancies. STUDY DESIGN: We measured the level of ECFCs in the cord blood of neonates (n = 27) born from non-obese healthy mothers with nonpathologic pregnancies and examined whether ECFC abundance correlated with maternal BMI. We also examined the effect of maternal BMI on ECFC phenotype and function using angiogenic and vasculogenic assays. RESULTS: We observed variation in ECFC abundance among subjects and found a positive correlation between prepregnancy maternal BMI and ECFC content (r = 0.51, P = .007), which was independent of other obstetric factors. Despite this variation, ECFC phenotype and functionality were deemed normal and highly similar between subjects with maternal BMI <25 kg/m(2) and BMI between 25-30 kg/m(2), including the ability to form vascular networks in vivo. CONCLUSIONS: This study underlines the need to consider maternal BMI as a potential confounding factor for cord blood levels of ECFCs in future comparative studies between healthy and pathologic pregnancies.
Assuntos
Índice de Massa Corporal , Células Endoteliais/citologia , Sangue Fetal/citologia , Células-Tronco/citologia , Adulto , Células Cultivadas , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez , Nascimento Prematuro/sangueRESUMO
OBJECTIVE: Determine the frequency of candida in the oral cavity of children with a risk of developing opportunistic infections, and establish if there is an association between the frequency of this oral colonization and three categories of at-risk populations. METHODS: Four infant population groups in Mexico were studied: an HIV/AIDS group undergoing highly active antiretroviral therapy (35 girls and 25 boys); a malnourished group (26 girls and 29 boys); a group from the Tarahumara indigenous people, one of the poorest ethnic populations in the country (37 girls and 20 boys); and a control group (8 girls and 21 boys in apparently good health). The children with HIV/AIDS were immunologically and virologically classified according to the EC Clearinghouse criteria, while malnutrition was determined through the World Health Organization's weight/height index. A sample of oral mucosa was taken with a sterile swab, which was incubated in Sabouraud dextrose agar and in Candida CHROMagar®. The species of candida were confirmed through the API ID32C test. RESULTS: The HIV/AIDS and malnutrition groups showed the higher frequency of Candida spps (51.7% and 38.2%, respectively), while the frequency level in the Tarahumara group was similar to that of the control group (17.5% versus 10.3%). With regard to the species of candida, the malnutrition group had the greatest diversity: C. albicans, C. tropical, C. krusei, and C. glabrata. CONCLUSIONS: The children with HIV/AIDS and malnutrition require strategies designed to reduce oral candidal colonization and reduce the risk of opportunistic infections.
Assuntos
Candidíase Bucal/epidemiologia , Infecções por HIV/epidemiologia , Indígenas Norte-Americanos/estatística & dados numéricos , Desnutrição/epidemiologia , Adolescente , Candida/isolamento & purificação , Portador Sadio/epidemiologia , Criança , Pré-Escolar , Comorbidade , Estudos Transversais , Feminino , Humanos , Hospedeiro Imunocomprometido , Masculino , México , Mucosa Bucal/microbiologia , Infecções Oportunistas/epidemiologia , Populações Vulneráveis/estatística & dados numéricosRESUMO
OBJETIVO: Determinar la frecuencia de Candida en cavidad bucal de niños con riesgo de desarrollar infecciones oportunistas y establecer si existe asociación entre la frecuencia de esta colonización bucal y tres tipos de población en riesgo. MÉTODOS: Se estudiaron cuatro grupos de población infantil de México: grupo VIH/sida bajo terapia antirretroviral altamente activa (TAAA) (35 niñas y 25 niños); grupo desnutrición (26 niñas y 29 niños); grupo tarahumara (37 niñas y 20 niños), una de las poblaciones étnicas más pobres del país, y grupo control (8 niñas y 21 niños aparentemente sanos). Los niños con VIH/sida fueron inmunológica y virológicamente clasificados según los criterios de EC-Clearinghouse, mientras que la desnutrición fue determinada a través del índice peso/talla de la Organización Mundial de la Salud. Se tomó una muestra de la mucosa bucal con hisopo estéril, que fue incubada en agar dextrosa Sabouraud y en CHROMagar-Candida®. Las especies de Candida se confirmaron con la prueba API ID32C. RESULTADOS: Los grupos VIH/sida y desnutrición mostraron la frecuencia más alta de Candida spp. (51,7 por ciento y 38,2 por ciento, respectivamente) mientras que el grupo tarahumara presenta una frecuencia semejante a la del grupo control (17,5 por ciento vs 10,3 por ciento). Respecto a las especies de Candida, el grupo desnutrición mostró la mayor diversidad: C. albicans, C. tropicalis, C. krusei y C. glabrata. CONCLUSIONES: Los infantes con inmunodeficiencia y con desnutrición requieren de estrategias diseñadas para disminuir la colonización bucal candidal y disminuir el riesgo de infecciones oportunistas.
OBJECTIVE: Determine the frequency of candida in the oral cavity of children with a risk of developing opportunistic infections, and establish if there is an association between the frequency of this oral colonization and three categories of at-risk populations. METHODS: Four infant population groups in Mexico were studied: an HIV/AIDS group undergoing highly active antiretroviral therapy (35 girls and 25 boys); a malnourished group (26 girls and 29 boys); a group from the Tarahumara indigenous people, one of the poorest ethnic populations in the country (37 girls and 20 boys); and a control group (8 girls and 21 boys in apparently good health). The children with HIV/AIDS were immunologically and virologically classified according to the EC Clearinghouse criteria, while malnutrition was determined through the World Health Organization's weight/height index. A sample of oral mucosa was taken with a sterile swab, which was incubated in Sabouraud dextrose agar and in Candida CHROMagar®. The species of candida were confirmed through the API ID32C test. RESULTS: The HIV/AIDS and malnutrition groups showed the higher frequency of Candida spps (51.7 percent and 38.2 percent, respectively), while the frequency level in the Tarahumara group was similar to that of the control group (17.5 percent versus 10.3 percent). With regard to the species of candida, the malnutrition group had the greatest diversity: C. albicans, C. tropical, C. krusei, and C. glabrata. CONCLUSIONS: The children with HIV/AIDS and malnutrition require strategies designed to reduce oral candidal colonization and reduce the risk of opportunistic infections.