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- Intervention with kimchi microbial community ameliorates obesity by regulating gut microbiota
- Seong-Eun Park , Sun Jae Kwon , Kwang-Moon Cho , Seung-Ho Seo , Eun-Ju Kim , Tatsuya Unno , So-Hyeon Bok , Dae-Hun Park , Hong-Seok Son
- J. Microbiol. 2020;58(10):859-867. Published online September 2, 2020
- DOI: https://doi.org/10.1007/s12275-020-0266-2
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- 21 Citations
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Abstract
- The objective of this study was to evaluate anti-obesity effects of kimchi microbial community (KMC) on obesity and gut microbiota using a high fat diet-induced mouse model compared to effects of a single strain. Administration of KMC decreased body weight, adipose tissue, and liver weight gains. Relative content of Muribaculaceae in the gut of the KMCtreated group was higher than that in the high-fat diet (HFD) group whereas relative contents of Akkermansiaceae, Coriobacteriaceae, and Erysipelotrichaceae were lower in KMCtreated group. Metabolic profile of blood was found to change differently according to the administration of KMC and a single strain of Lactobacillus plantarum. Serum metabolites significantly increased in the HFD group but decreased in the KMC-treated group included arachidic acid, stearic acid, fumaric acid, and glucose, suggesting that the administration of KMC could influence energy metabolism. The main genus in KMC was not detected in guts of mice in KMC-treated group. Since the use of KMC has advantages in terms of safety, it has potential to improve gut microbial community for obese people.
- Inhibitory effects of piceatannol on human cytomegalovirus (hCMV) in vitro
- San-Ying Wang , Jing Zhang , Xiao-Gang Xu , Hui-Li Su , Wen-Min Xing , Zhong-Shan Zhang , Wei-Hua Jin , Ji-Huan Dai , Ya-Zhen Wang , Xin-Yue He , Chuan Sun , Jing Yan , Gen-Xiang Mao
- J. Microbiol. 2020;58(8):716-723. Published online June 10, 2020
- DOI: https://doi.org/10.1007/s12275-020-9528-2
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- 11 Citations
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Abstract
- Human cytomegalovirus (hCMV) is a ubiquitous herpesvirus, which results in the establishment of a latent infection that persists throughout the life of the host and can be reactivated when the immunity is low. Currently, there is no vaccine for hCMV infection, and the licensed antiviral drugs mainly target the viral enzymes and have obvious adverse reactions. Thus, it is important to search for compounds with antihCMV properties. The present study aimed to investigate the suppressive effects of piceatannol on hCMV Towne strain infection and the putative underlying mechanisms using human diploid fibroblast WI-38 cells. Piceatannol supplementation prevented the lytic changes induced by hCMV infection in WI-38 cells. Furthermore, piceatannol suppressed the expression of hCMV immediate-early (IE) and early (E) proteins as well as the replication of hCMV DNA in a dose-dependent manner. Moreover, hCMV-induced cellular senescence was suppressed by piceatannol, as shown by a decline in the senescence-associated β-galactosidase (SA-β-Gal) activity and decreased production of intracellular reactive oxygen species (ROS). p16INK4a, a major senescence-associated molecule, was dramatically elevated by current hCMV infection that was attenuated by pre-incubation with piceatannol in a dose-dependent manner. These results demonstrated that piceatannol suppressed the hCMV infection via inhibition of the activation of p16INK4a and cellular senescence induced by hCMV. Together, these findings indicate piceatannol as a novel and potent anti-hCMV agent with the potential to be developed as an effective treatment for chronic hCMV infection.
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