RESUMEN
OBJECTIVE: To evaluate the peripheral blood mononuclear cell (PBMC) expression levels of hemeoxygenase 1 (HMOX-1), superoxide dismutase 1 (SOD-1), vascular endothelial growth factor A (VEGF-A), transforming growth factor beta 1 (TGF-ß1), interleukin (IL)-6, IL-15 and AdipoQ genes to study their association with preeclampsia (PE). METHODS: A total of 177 pregnant women were recruited: 108 cases and 69 controls. Quantification of gene expression was measured by quantitative real-time polymerase chain reaction (PCR) using TaqMan probes. RESULTS: Underexpression of VEGF-A and TGF-ß1 was a constant in most of the cases (80.91% and 76.36%, respectively) and their expression was associated with onset and/or severity of disease (p values < 0.05). IL-6, IL-15 and AdipoQ, showed low or no expression in PBMC samples evaluated. CONCLUSION: PBMC underexpression of VEGF-A and TGF-ß1 is a hallmark of PE in the study population.
Asunto(s)
Biomarcadores/metabolismo , Leucocitos Mononucleares/metabolismo , Preeclampsia/metabolismo , Adiponectina/metabolismo , Adolescente , Adulto , Estudios de Casos y Controles , Femenino , Hemo-Oxigenasa 1/metabolismo , Humanos , Interleucina-15/metabolismo , Interleucina-6/metabolismo , Preeclampsia/genética , Embarazo , Superóxido Dismutasa/metabolismo , Superóxido Dismutasa-1 , Factor de Crecimiento Transformador beta1/metabolismo , Factor A de Crecimiento Endotelial Vascular/metabolismo , Adulto JovenRESUMEN
The biodegradation kinetics of BTE-oX and MTBE, mixed all together in the presence of diesel-grown bioaugmented bacterial populations as high as 885 mg/L VSS, was evaluated. The effect of soil in aqueous samples and the effect of Tergitol NP-10 on substrate biodegradation rates were also evaluated. Biodegradation kinetics was evaluated for 54 h, every 6 h. All BTE-oX chemicals followed a first-order two-phase biodegradation kinetic model, whereas MTBE followed a zero-order removal kinetic model in all samples. BTE-oX removal rates were much higher than those of MTBE in all samples. The presence of soil in aqueous samples retarded BTE-oX and MTBE removal rates. The addition of Tergitol NP-10 to aqueous samples containing soil had a positive effect on substrate removal rate in all samples. Substrate percent removals ranged between 64.8-98.9% for benzene, toluene and ethylbenzene. O-xylene and MTBE percent removals ranged between 18.7-40.8% and 7.2-10.3%, respectively.
Asunto(s)
Derivados del Benceno/análisis , Benceno/análisis , Biodegradación Ambiental , Gasolina , Éteres Metílicos/análisis , Tolueno/análisis , Purificación del Agua/métodos , Xilenos/análisis , Biomasa , Reactores Biológicos , Biotransformación , Cinética , Contaminantes del Suelo , Factores de TiempoRESUMEN
The biodegradation kinetics of BTE-oX and MTBE, mixed all together, in the presence of bioaugmented bacterial populations as high as 880 mg/L VSS was evaluated. The effect of soil in aqueous samples and the effect of Tergitol NP-10 on substrate biodegradation rates were also evaluated. Biodegradation kinetics was evaluated for 36 hours, every 6 hours. Benzene and o-xylene biodegradation followed a first-order one-phase kinetic model, whereas toluene and ethylbenzene biodegradation was well described by a first-order two-phase kinetic model in all samples. MTBE followed a zero-order removal kinetic model in all samples. The presence of soil in aqueous samples retarded BTE-oX removal rates, with the highest negative effect on o-xylene. The presence of soil enhanced MTBE removal rate. The addition of Tergitol NP-10 to aqueous samples containing soil had a positive effect on substrate removal rate in all samples. Substrate percent removals ranged from 95.4-99.7% for benzene, toluene and ethylbenzene. O-xylene and MTBE percent removals ranged from 55.9-90.1% and 15.6-30.1%, respectively.