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Modified Renshen Wumei Decoction Alleviates Intestinal Barrier Destruction in Rats with Diarrhea
( Zhiwei Guan ),( Qiong Zhao ),( Qinwan Huang ),( Zhonghe Zhao ),( Hongyun Zhou ),( Yuanyuan He ),( Shanshan Li ),( Shifang Wan ) 한국미생물 · 생명공학회 2021 Journal of microbiology and biotechnology Vol.31 No.9
Modified Renshen Wumei decoction (MRWD), a famous traditional Chinese medicine, is widely used for treating persistent diarrhea. However, as the mechanism by which MRWD regulates diarrhea remains unknown, we examined the protective effects of MRWD on intestinal barrier integrity in a diarrhea model. In total, 48 male rats were randomly distributed to four treatment groups: the blank group (CK group), model group (MC group), Medilac-Vita group (MV group) and Chinese herb group (MRWD group). After a 21-day experiment, serum and colon samples were assessed. The diarrhea index, pathological examination findings and change in D-lactate and diamine oxidase (DAO) contents illustrated that the induction of diarrhea caused intestinal injury, which was ameliorated by MV and MRWD infusion. Metabolomics analysis identified several metabolites in the serum. Some critical metabolites, such as phosphoric acid, taurine, cortisone, leukotriene B4 and calcitriol, were found to be significantly elevated by MRWD infusion. Importantly, these differences correlated with mineral absorption and metabolism and peroxisome proliferator-activated receptor (PPAR) pathways. Moreover, it significantly increased the expression levels of TLR4, MyD88 and p-NF-κB p65 proteins and the contents of IL-1 and TNF-α, while the expression levels of occludin, claudin-1 and ZO-1 proteins decreased. These deleterious effects were significantly alleviated by MV and MRWD infusion. Our findings indicate that MRWD infusion helps alleviate diarrhea, possibly by maintaining electrolyte homeostasis, improving the intestinal barrier integrity, and inhibiting the TLR4/NF-κB axis.
Zhiwei Song,Xiaoqiao He,Wei Li,De Xie 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.76 No.2
This paper deals with free vibration of plates with steps and internal line supports by using a modified matched interface and boundary (MMIB) method. Different kinds of interfaces caused by steps, rigid and elastic line supports and their combinations are taken into account. Detailed MMIB procedures for dealing with these different interfaces are presented. Various examples are chosen to illustrate the accuracy and convergence of MMIB method. Numerical results show that the proposed MMIB is a highly accurate and convergent approach for solving the title issue. This study will extend the application range of MMIB method.
Zhiwei Song,Wei Li,Xiaoqiao He,De Xie 국제구조공학회 2019 Structural Engineering and Mechanics, An Int'l Jou Vol.72 No.1
This paper proposes a modified matched interface and boundary (MMIB) method to analyze the free vibration of beams with various interfaces caused by steps, intermediate rigid and elastic supports, intermediate concentrated masses and spring-mass systems, etc. A new strategy is developed to determine the parameters in the iterative computation of MMIB. The MMIB procedures are established to deal with boundary conditions and various interface conditions, which overcomes the shortcoming of the traditional MIB. A number of examples are utilized to illustrate the performance of MMIB method. Numerical results indicate that the MMIB method is a highly accurate and convergent approach for solving interface problems.
Quangui He,Zhiwei Shi,Dingli Wu,Shisheng Fan,Zhengkuan Zhang,Deshuang Liu 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.7
The problem of robust finite-horizon l2-l∞ filtering is investigated for a class of discrete-time Markovian jump systems under denial-of-service attacks. The considered dynamic model is more appropriate, on account of polyhedral feature of time-varying transition probabilities. Denial-of-service attack that may jam or compromise the measurement packets on communication channels is assumed as a Bernoulli distributed sequence. Based on stochastic Lyapunov function approach, sufficient criteria corresponding to the error system are established for designing a finite-horizon l2-l∞ filter in the light of linear matrix inequalities. In the end, three illustrative examples are worked out to substantiate the theoretical results.