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691 results on '"Huang, Shaobin"'

38. Characteristics and Nitrogen Removal Performance Optimization of Aerobic Denitrifying Bacteria Bacillus cereus J1 under Ammonium and Nitrate-Nitrogen Conditions.

Author

Cao, Ying, Jin, Yi, Lu, Yao, Wang, Yanling, Zhao, Tianyu, Chen, Pengfei, Huang, Shaobin, and Zhang, Yongqing

Abstract

A novel aerobic denitrifying bacterium Bacillus cereus J1 was isolated from a sewage treatment plant. Its characteristics under two distinct nitrogen sources were systematically investigated. According to the results of whole-genome sequencing, we inferred that strain J1 removes nitrogen through processes such as aerobic denitrification, dissimilatory nitrate reduction to ammonium, and ammonium assimilation. The degradation process of COD and total inorganic nitrogen (TIN) correlated to the zero-order degradation kinetics equation, and the maximum removal rate of NO3−−N reached 3.17 mg/L/h and that of NH4+−N was 3.79 mg/L/h. Utilizing single-factor experiments and response surface methodology, the optimal conditions for nitrate removal were determined as a shaking speed of 115 rpm, COD/nitrogen mass (C/N ratio) of 12.25, and salinity of 3.44 g/L, with the C/N ratio exerting the most significant influence. Similarly, for the maximum ammonium removal, the ideal conditions involved a shaking speed of 133 rpm, C/N ratio of 29, and salinity of 13.30 g/L, with the shaking speed exerting the most significant influence. These findings demonstrate that large amounts of ammonium and nitrate can be quickly removed with the help of Bacillus cereus J1, indicating that strain J1 may be applied to alleviate nitrogen pollution in aquatic environments. [ABSTRACT FROM AUTHOR]

Published
2024
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39. Endothelial dysfunction of syphilis: Pathogenesis.

Author

Liu, Zhaoping, Zhang, Xiaohong, Xiong, Shun, Huang, Shaobin, Ding, Xuan, Xu, Man, Yao, Jiangchen, Liu, Shuangquan, and Zhao, Feijun

Subjects
ENDOTHELIUM diseases, SEXUALLY transmitted diseases, SYPHILIS, TREPONEMA pallidum, GLOBUS pallidus, ENDOTHELIAL cells, CELL proliferation
Abstract

Treponema pallidum is the causative factor of syphilis, a sexually transmitted disease (STD) characterized by perivascular infiltration of inflammatory cells, vascular leakage, swelling and proliferation of endothelial cells (ECs). The endothelium lining blood and lymphatic vessels is a key barrier separating body fluids from host tissues and is a major target of T. pallidum. In this review, we focus on how T. pallidum establish intimate interactions with ECs, triggering endothelial dysfunction such as endothelial inflammation, abnormal repairment and damage of ECs. In addition, we summarize that migration and invasion of T. pallidum across vascular ECs may occur through two pathways. These two mechanisms of transendothelial migration are paracellular and cholesterol‐dependent, respectively. Herein, clarifying the relationship between T. pallidum and endothelial dysfunction is of great significance to provide novel strategies for diagnosis and prevention of syphilis, and has a great potential prospect of clinical application. [ABSTRACT FROM AUTHOR]

Published
2024
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