著者

Chao Yu Shanjun Tan Chunyu Zhou Cuilin Zhu Xin Kang Shuai Liu Shuang Zhao Shulin Fan Zhen Yu Ai Peng Zhen Wang

出版者

公益社団法人日本薬学会

雑誌

Biological and Pharmaceutical Bulletin (ISSN:09186158)

巻号頁・発行日

vol.39, no.11, pp.1787-1792, 2016-11-01 (Released:2016-11-01)

参考文献数

39

被引用文献数

9

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Berberine is one of the main active constituents of Rhizoma coptidis, a traditional Chinese medicine, and has long been used for the treatment of gastrointestinal disorders. The present study was designed to investigate the effects of berberine on the intestinal mucosal barrier damage in a rat uremia model induced by the 5/6 kidney resection. Beginning at postoperative week 4, the uremia rats were treated with daily 150 mg/kg berberine by oral gavage for 6 weeks. To assess the intestinal mucosal barrier changes, blood samples were collected for measuring the serum D-lactate level, and terminal ileum tissue samples were used for analyses of intestinal permeability, myeloperoxidase activity, histopathology, malondialdehyde (MDA) level, and superoxide dismutase (SOD) activity. Berberine treatment resulted in significant decreases in the serum D-lactate level, intestinal permeability, intestinal myeloperoxidase activity, and intestinal mucosal and submucosal edema and inflammation, and the Chiu’s scores assessed for intestinal mucosal injury. The intestinal MDA level was reduced and the intestinal SOD activity was increased following berberine treatment. In conclusion, berberine reduces intestinal mucosal barrier damage induced by uremia, which is most likely due to its anti-oxidative activity. It may be developed as a potential treatment for preserving intestinal mucosal barrier function in patients with uremia.

著者

Xiang Yin Linli Zhou Fei Han Jie Han Yuanyuan Zhang Zewei Sun Wenting Zhao Zhen Wang Liangrong Zheng

出版者

一般社団法人 日本動脈硬化学会

雑誌

Journal of Atherosclerosis and Thrombosis (ISSN:13403478)

巻号頁・発行日

vol.24, no.1, pp.55-67, 2017-01-01 (Released:2017-01-01)

参考文献数

30

被引用文献数

9

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Aim: Atherosclerosis is a chronic inflammatory disease, which leads to thrombosis and acute coronary syndrome. Matrix metalloproteinase-9 (MMP-9) is involved in the stability of the extracellular matrix (ECM) and atherosclerosis plaque. Until now, it is established that lipopolysaccharide (LPS) and norepinephrine (NE) are associated with the pathological process of atherosclerosis. However, the combined effect of LPS and NE on MMP-9 is unclear. We investigated the combined effect of LPS and NE on MMP-9 expression in human monocytes and the mechanism involved in the process.Methods: THP-1 cells were cultured and treated with LPS and/or NE. MMP-9 and TIMP-1 gene and protein expression were detected by real time PCR and ELISA, respectively. MMP-9 activity was detected by gelatin zymography. Adrenoceptor antagonists and MAPKs inhibitors were used to clarify the mechanism. Pathway-related proteins were detected by Western blot.Results: We found that NE enhances LPS-induced MMP-9 and TIMP-1 expression as well as MMP-9 activity in THP-1 cells. This effect is reversed by the beta (β)-adrenoceptor antagonist propranolol, extracellular signal-regulated kinases (ERK) inhibitor U0126, and c-Jun N-terminal kinase (JNK) inhibitor SP600125. NE enhances LPS-induced ERK/JNK phosphorylation. NE up-regulates LPS-induced c-Fos expression, which is counteracted by propranolol, U0126, and SP600125. Furthermore, c-Fos silence reverses the effect of NE on MMP-9 activity.Conclusions: Our results suggest that NE enhances LPS-induced MMP-9 expression through β-adrenergic receptor and downstream ERK/JNK-c-Fos pathway. This study may help us to understand the combined effect and mechanism of NE/LPS on MMP-9 expression.

著者

Zhen-Guang Li Zhan-Cai Yu Yong-Peng Yu Dao-Zhen Wang Wei-Ping Ju Qi-Zhuan Wu

出版者

Japan Brain Science society

雑誌

脳科学誌 (ISSN:13415301)

巻号頁・発行日

vol.37, pp.35-46, 2011 (Released:2017-06-01)

参考文献数

32

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Lysophosphatidic acid (LPA) is released from activated platelets. Statins are the commonly used anti-atherosclerotic drug. The purpose of this study is to observe whether atorvastatin could decrease the plasma LPA levels in ischemic stroke patients. A total of 386 subjects, including the 247 ischemic stroke cases and 139 healthy controls, were enrolled in this study. The 247 ischemic stroke cases were divided into Group A (n=109) and Group B (n=138) who had and had not received atorvastatin treatment before a stroke respectively. The plasma LPA levels of all the subjects were measured using chromatography. There was significant diffidence in the LPA levels between cases and controls (3.22±1.51μmol/L vs. 1.83±1.07μmol/L, p<0.01). The plasma LPA level in Group A was lower than that of Group B (2.66±1.23umol/L vs. 3.83±1.14umol/L, p<0.01). Atorvastatin (20mg/d) significantly reduced LPA levels in ischemic stroke patients (n=138) compared with that before atorvastatin administration (1.96±0.87μmol/L vs. 3.83±1.14μmol/L, p<0.01). However, the LPA levels re-elevated after atorvastatin withdrawl for one month. Atorvastatin could decrease the plasma LPA levels in patients with ischemic stroke, which providing a better understanding of how statins protect against ischemic stroke. It is plausible to speculate that statins might have an effect of anti platelet activation.

著者

Mingyu Luo Jimin Sun Zhenyu Gong Zhen Wang

出版者

International Research and Cooperation Association for Bio & Socio-Sciences Advancement

雑誌

BioScience Trends (ISSN:18817815)

巻号頁・発行日

pp.2021.01218, (Released:2021-06-16)

参考文献数

19

被引用文献数

6

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The COVID-19 pandemic continues to ravage the world. As many countries have entered the postpandemic period, current efforts to prevent and control COVID-19 have gradually been normalized in many countries. Although the focus is on vaccines to achieve herd immunity, conventional physical containment strategies should be reassessed as part of efforts to prevent and control infectious diseases. Continued respiratory protective measures such as social distancing and the wearing of masks have been extensively accepted by the public in most countries. A point worth noticing is that the activities of influenza and other respiratory diseases have decreased as these strategies have been implemented. Public mobilization and large-scale campaigns to promote health are also important to interrupting the transmission of pathogens. A good example can be found in the achievements of China's Patriotic Public Health Campaign. These practices underscore the importance of enhancing physical containment strategies and public mobilization and management, with support from the legal system, to respond to any potential emerging infectious diseases.

著者

Jing Xue Xiaorong Li Ping Liu Ke Li Liping Sha Xiaoli Yang Lili Zhu Zhen Wang Youping Dong Li Zhang Hong Lei Xiaoxia Zhang Xiaoying Dong Hao Wang

出版者

The Japan Endocrine Society

雑誌

Endocrine Journal (ISSN:09188959)

巻号頁・発行日

pp.EJ18-0567, (Released:2019-07-03)

被引用文献数

71

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Polycystic ovary syndrome (PCOS) represents an endocrine disorder, which is closely related with gut microbiota. Inulin, a kind of probiotics, has been proven to alleviate gut microbiota dysbiosis. Metformin, a biguanide agent, shows beneficial effects on chronic metabolic diseases. Our objective was to assess the effects and associated mechanisms of inulin and metforin on attenuation of PCOS in mice. Mice were divided into 4 groups: control group (CON), model group (MOD), inulin group (INU), metformin group (MET). The last three groups were fed 6 mg of dehydroepiandrosterone (DHEA) per 100 g body weight and 60% high-fat diet to generate mice model. After 21 days of intervention, mice were euthanized and associated indications were investigated. Body weight (BW) and testosterone (T) levels were significantly decreased, but estradiol (E2) levels were increased in INU or MET group, respectively. Ovary HE staining demonstrated that inulin or metformin ameliorated PCOS morphology. Inflammatory indicators from plasma and ovary including TNF-α, IL-6, and IL-17A were decreased in INU or MET group. Moreover, IL-10 in ovary of INU or MET group was increased. Sequencing and analysis of gut microbiota showed that compared to MOD group, Bifidobacterium was increased, but Proteobacteria, Helicobacter and Parasutterella were decreased in INU group. Helicobacter was decreased in MET group. Correlation analysis showed that gut microbiota was correlated with inflammatory factors. Our results revealed that inulin and metformin alleviated PCOS via anti-inflammation and modulating gut microbiota, which may contribute to potential clinical therapy for the disease.