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https://www.readbyqxmd.com/read/28821932/cometabolic-degradation-of-dibenzofuran-and-dibenzothiophene-by-a-naphthalene-degrading-comamonas-sp-jb
#1
Xiangyu Ji, Jing Xu, Shuxiang Ning, Nan Li, Liang Tan, Shengnan Shi
Comamonas sp. JB was used to investigate the cometabolic degradation of dibenzofuran (DBF) and dibenzothiophene (DBT) with naphthalene as the primary substrate. Dehydrogenase and ATPase activity of the growing system with the presence of DBF and DBT were decreased when compared to only naphthalene in the growing system, indicating that the presence of DBF and DBT inhibited the metabolic activity of strain JB. The pathways and enzymes involved in the cometabolic degradation were tested. Examination of metabolites elucidated that strain JB cometabolically degraded DBF to 1,2-dihydroxydibenzofuran, subsequently to 2-hydroxy-4-(3'-oxo-3'H-benzofuran-2'-yliden)but-2-enoic acid, and finally to catechol...
December 2017: Current Microbiology
https://www.readbyqxmd.com/read/28251539/enhanced-treatment-of-coking-wastewater-containing-phenol-pyridine-and-quinoline-by-integration-of-an-e-fenton-process-into-biological-treatment
#2
Lanlan Xue, Jiaxin Liu, Meidi Li, Liang Tan, Xiangyu Ji, Shengnan Shi, Bei Jiang
In this study, the pyridine and quinoline could be cometabolically degraded by phenol-cultivated Comamonas sp. strain JB(strain JB). The integration of magnetically immobilized cells of JB and an E-Fenton process into one entity has been designed to prepare a novel integration system to improve the treatment efficiency of phenol, pyridine, and quinoline in coking wastewater. The optimal pH for the integration system was 3.5. Degradation rates of phenol, pyridine, quinoline, and COD by the integration system were significantly exceeded the sum degradation rates of the single E-Fenton process and magnetically immobilized cells at the optimal voltage of 1 V...
April 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28107720/enhanced-treatment-performance-of-coking-wastewater-and-reduced-membrane-fouling-using-a-novel-embr
#3
Bei Jiang, Cong Du, Shengnan Shi, Liang Tan, Meidi Li, Jiaxin Liu, Lanlan Xue, Xiangyu Ji
A novel EMBR (electric field applied in MBR) by placing stainless steel mesh cathode inside a flat membrane module and stainless steel mesh anode outside the module was built and operated to enhance the treatment performance of coking wastewater containing phenol, pyridine and quinoline and reduce the membrane fouling. The degradation rates of COD, phenol, pyridine and quinoline in EMBR with electric field (reactor A) were significantly higher than the sum of EMBR without electric field (reactor B) and only electro-catalytic degradation during the long-term treatment, confirming that a coupling effect was existed between biodegradation and electro-catalytic degradation process...
April 2017: Bioresource Technology
https://www.readbyqxmd.com/read/25320751/low-expression-of-glucocorticoid-receptor-a-in-oral-lichen-planus-correlates-with-activation-of-nuclear-factor-%C3%AE%C2%BAb-a-preliminary-study
#4
COMPARATIVE STUDY
Xue-cai Lin, Hong-ying Sun, Yue-xiang Zhen, Hui Zhang, Hang Shi, Xia-xia Wang
BACKGROUND: Emerging evidence indicates that the interaction between glucocorticoid receptor α (GRα) and nuclear factor κB (NF-κB) is a key pathogenetic cross talk in the autoimmune and inflammatory disorders. The objective of this study was to determine the GRα expression in patients with oral lichen planus (OLP) and investigate its correlation with NF-κB in OLP. METHODS: We compared the expression of GRα and NF-κB in oral biopsy specimens from patients with OLP(n = 32) against normal controls (n = 12) and investigated the correlation between the expression of GRα and NF-κB in OLP...
September 2014: Journal of Oral Pathology & Medicine
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