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Ai S, Li Y, Zheng H, Zhang M, Tao J, Liu W, Peng L, Wang Z, Wang Y. Collision of herbal medicine and nanotechnology: a bibliometric analysis of herbal nanoparticles from 2004 to 2023. J Nanobiotechnology 2024; 22:140. [PMID: 38556857 PMCID: PMC10983666 DOI: 10.1186/s12951-024-02426-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/18/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Herbal nanoparticles are made from natural herbs/medicinal plants, their extracts, or a combination with other nanoparticle carriers. Compared to traditional herbs, herbal nanoparticles lead to improved bioavailability, enhanced stability, and reduced toxicity. Previous research indicates that herbal medicine nanomaterials are rapidly advancing and making significant progress; however, bibliometric analysis and knowledge mapping for herbal nanoparticles are currently lacking. We performed a bibliometric analysis by retrieving publications related to herbal nanoparticles from the Web of Science Core Collection (WoSCC) database spanning from 2004 to 2023. Data processing was performed using the R package Bibliometrix, VOSviewers, and CiteSpace. RESULTS In total, 1876 articles related to herbal nanoparticles were identified, originating from various countries, with China being the primary contributing country. The number of publications in this field increases annually. Beijing University of Chinese Medicine, Shanghai University of Traditional Chinese Medicine, and Saveetha University in India are prominent research institutions in this domain. The Journal "International Journal of Nanomedicine" has the highest number of publications. The number of authors of these publications reached 8234, with Yan Zhao, Yue Zhang, and Huihua Qu being the most prolific authors and Yan Zhao being the most frequently cited author. "Traditional Chinese medicine," "drug delivery," and "green synthesis" are the main research focal points. Themes such as "green synthesis," "curcumin," "wound healing," "drug delivery," and "carbon dots" may represent emerging research areas. CONCLUSIONS Our study findings assist in identifying the latest research frontiers and hot topics, providing valuable references for scholars investigating the role of nanotechnology in herbal medicine.
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Affiliation(s)
- Sinan Ai
- China-Japan Friendship Hospital, Beijing, China
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Yake Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Huijuan Zheng
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Meiling Zhang
- Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jiayin Tao
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Liang Peng
- China-Japan Friendship Hospital, Beijing, China.
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Medical Science, China-Japan Friendship Hospital, Beijing, China.
| | - Zhen Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China.
| | - Yaoxian Wang
- Henan University of Chinese Medicine, Zhengzhou, Henan, China.
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Ai S, Li Y, Zheng H, Wang Z, Liu W, Tao J, Li Y, Wang Y. Global research trends and hot spots on autophagy and kidney diseases: a bibliometric analysis from 2000 to 2022. Front Pharmacol 2023; 14:1275792. [PMID: 38099142 PMCID: PMC10719858 DOI: 10.3389/fphar.2023.1275792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 11/17/2023] [Indexed: 12/17/2023] Open
Abstract
Background: Autophagy is an essential cellular process involving the self-degradation and recycling of organelles, proteins, and cellular debris. Recent research has shown that autophagy plays a significant role in the occurrence and development of kidney diseases. However, there is a lack of bibliometric analysis regarding the relationship between autophagy and kidney diseases. Methods: A bibliometric analysis was conducted by searching for literature related to autophagy and kidney diseases in the Web of Science Core Collection (WoSCC) database from 2000 to 2022. Data processing was carried out using R package "Bibliometrix", VOSviewers, and CiteSpace. Results: A total of 4,579 articles related to autophagy and kidney diseases were collected from various countries. China and the United States were the main countries contributing to the publications. The number of publications in this field showed a year-on-year increasing trend, with open-access journals playing a major role in driving the literature output. Nanjing Medical University in China, Osaka University in Japan, and the University of Pittsburgh in the United States were the main research institutions. The journal "International journal of molecular sciences" had the highest number of publications, while "Autophagy" was the most influential journal in the field. These articles were authored by 18,583 individuals, with Dong, Zheng; Koya, Daisuke; and Kume, Shinji being the most prolific authors, and Dong, Zheng being the most frequently co-cited author. Research on autophagy mainly focused on diabetic kidney diseases, acute kidney injury, and chronic kidney disease. "Autophagy", "apoptosis", and "oxidative stress" were the primary research hotspots. Topics such as "diabetic kidney diseases", "sepsis", "ferroptosis", "nrf2", "hypertension" and "pi3k" may represent potential future development trends. Research on autophagy has gradually focused on metabolic-related kidney diseases such as diabetic nephropathy and hypertension. Additionally, PI3K, NRF2, and ferroptosis have been recent research directions in the field of autophagy mechanisms. Conclusion: This is the first comprehensive bibliometric study summarizing the relationship between autophagy and kidney diseases. The findings aid in identifying recent research frontiers and hot topics, providing valuable references for scholars investigating the role of autophagy in kidney diseases.
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Affiliation(s)
- Sinan Ai
- Beijing University of Chinese Medicine, Beijing, China
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yake Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Huijuan Zheng
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Zhen Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - JiaYin Tao
- Beijing University of Chinese Medicine, Beijing, China
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yaotan Li
- Beijing University of Chinese Medicine, Beijing, China
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yaoxian Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Henan University of Chinese Medicine, Zhengzhou, China
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Tian L, Guo T, Wu F, Bai R, Ai S, Wang H, Song Y, Zhu M, Jiang Y, Ma S, Zhuang X, Guo S. The pseudoenzyme ADPRHL1 affects cardiac function by regulating the ROCK pathway. Stem Cell Res Ther 2023; 14:309. [PMID: 37880701 PMCID: PMC10601310 DOI: 10.1186/s13287-023-03507-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/21/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Pseudoenzymes, catalytically deficient variants of active enzymes, have a wide range of regulatory functions. ADP-ribosylhydrolase-like 1 (ADPRHL1), a pseudoenzyme belonging to a small group of ADP-ribosylhydrolase enzymes that lacks the amino acid residues necessary for catalytic activity, may have a significant role in heart development based on accumulating evidence. However, the specific function of ADPRHL1 in this process has not been elucidated. To investigate the role of ADPRHL1 in the heart, we generated the first in vitro human embryonic stem cell model with an ADPRHL1 knockout. METHOD Using the CRISPR/Cas9 system, we generated ADPRHL1 knockout in the human embryonic stem cell (hESC) H9 line. The cells were differentiated into cardiomyocytes using a chemically defined and xeno-free method. We employed confocal laser microscopy to detect calcium transients and microelectrode array (MEA) to assess the electrophysiological activity of ADPRHL1 deficiency cardiomyocytes. Additionally, we investigated the cellular mechanism of ADPRHL1 by Bulk RNA sequencing and western blot. RESULTS The results indicate that the absence of ADPRHL1 in cardiomyocytes led to adhered abnormally, as well as perturbations in calcium transients and electrophysiological activity. We also revealed that disruption of focal adhesion formation in these cardiomyocytes was due to an excessive upregulation of the ROCK-myosin II pathway. Notably, inhibition of ROCK and myosin II effectively restores focal adhesions in ADPRHL1-deficient cardiomyocytes and improved electrical conduction and calcium activity. CONCLUSIONS Our findings demonstrate that ADPRHL1 plays a critical role in maintaining the proper function of cardiomyocytes by regulating the ROCK-myosin II pathway, suggesting that it may serve as a potential drug target for the treatment of ADPRHL1-related diseases.
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Affiliation(s)
- Lei Tian
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, 23 Meishuguanhou Street, Dongcheng District, Beijing, 100010, China
| | - Tianwei Guo
- Beijing Laboratory for Cardiovascular Precision Medicine, The Key Laboratory of Biomedical Engineering for Cardiovascular Disease Research, Ministry of Education, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Fujian Wu
- Translational Medicine Collaborative Innovation Center, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, Shenzhen, 518020, China
- Post-Doctoral Scientific Research Station of Basic Medicine, Jinan University, Guangzhou, 510632, China
| | - Rui Bai
- Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen, 518057, Guangdong Province, China
| | - Sinan Ai
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Hongyue Wang
- Department of Cardiology, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beilishi Rd 167, Xicheng District, Beijing City, 100037, China
| | - Yuanxiu Song
- Department of Emergency, The First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310003, China
| | - Min Zhu
- Department of Cardiology, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beilishi Rd 167, Xicheng District, Beijing City, 100037, China
| | - Youxu Jiang
- Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Jingba Road, Zhengzhou, 450053, China
| | - Shuhong Ma
- Department of Cardiology, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beilishi Rd 167, Xicheng District, Beijing City, 100037, China
| | - Xiaofeng Zhuang
- Department of Cardiology, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beilishi Rd 167, Xicheng District, Beijing City, 100037, China.
| | - Shuzhen Guo
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China.
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Ai S, Li Y, Tao J, Zheng H, Tian L, Wang Y, Wang Z, Liu WJ. Bibliometric visualization analysis of gut-kidney axis from 2003 to 2022. Front Physiol 2023; 14:1176894. [PMID: 37362429 PMCID: PMC10287975 DOI: 10.3389/fphys.2023.1176894] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023] Open
Abstract
Background: The gut-kidney axis refers to the interaction between the gastrointestinal tract and the kidneys, and its disorders have become increasingly important in the development of kidney diseases. The aim of this study is to identify current research hotspots in the field of the gut-kidney axis from 2003 to 2022 and provide guidance for future research in this field. Methods: We collected relevant literature on the gut-kidney axis from the Web of Science Core Collection (WoSCC) database and conducted bibliometric and visualization analyses using biblioshiny in R-Studio and VOSviewer (version 1.6.16). Results: A total of 3,900 documents were retrieved from the WoSCC database. The publications have shown rapid expansion since 2011, with the greatest research hotspot emerging due to the concept of the "intestinal-renal syndrome," first proposed by Meijers. The most relevant journals were in the field of diet and metabolism, such as Nutrients. The United States and China were the most influential countries, and the most active institute was the University of California San Diego. Author analysis revealed that Denise Mafra, Nosratola D. Vaziri, Fouque, and Denis made great contributions in different aspects of the field. Clustering analysis of the keywords found that important research priorities were "immunity," "inflammation," "metabolism," and "urinary toxin," reflecting the basis of research in the field. Current research frontiers in the field include "hyperuricemia," "gut microbiota," "diabetes," "trimethylamine n-oxide," "iga nephropathy," "acute kidney injury," "chronic kidney disease," "inflammation," all of which necessitate further investigation. Conclusion: This study presents a comprehensive bibliometric analysis and offers an up-to-date outlook on the research related to the gut-kidney axis, with a specific emphasis on the present state of intercommunication between gut microbiota and kidney diseases in this field. This perspective may assist researchers in selecting appropriate journals and partners, and help to gain a deeper understanding of the field's hotspots and frontiers, thereby promoting future research.
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Affiliation(s)
- Sinan Ai
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yake Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - JiaYin Tao
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Huijuan Zheng
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Lei Tian
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yaoxian Wang
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Zhen Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Wei Jing Liu
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
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5
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Tian L, Ai S, zheng H, Yang H, Zhou M, Tang J, Liu W, Zhao W, Wang Y. Cardiovascular and renal outcomes with sodium glucose co-transporter 2 inhibitors in patients with type 2 diabetes mellitus: A system review and network meta-analysis. Front Pharmacol 2022; 13:986186. [PMID: 36506550 PMCID: PMC9731650 DOI: 10.3389/fphar.2022.986186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/02/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular and renal impairment are the most common complications of type 2 diabetes mellitus (T2DM). As an emerging class of glucose-lowing agents sodium glucose co-transporter 2 (SGLT2), possesses beneficial effects on cardiovascular and renal outcomes in patients with T2DM. The aim of this study is to assess the efficacy of different SGLT2 inhibitors for cardiovascular and renal outcomes for patients with T2DM when compared with placebo. We performed a systematic search of PubMed, Embase, and the Cochrane library from inception through November 2021. Randomized clinical trials enrolling participants with T2DM were included, in which SGLT2 inhibitors were compared with each other or placebo. The primary outcomes including all-caused mortality, Cardiovascular outcomes (cardiovascular mortality, hospitalization for heart failure), and the renal composite outcomes (worsening persistent microalbuminuria or macroalbuminuria, new or worsening chronic kidney disease, doubling of serum creatinine, end-stage renal disease, renal transplant, or renal death). The data for the outcomes were pooled and recorded as Hazard rations (HRs) with 95% confidence intervals (CLs). Two researcher independently screened the trials and drawn the data. Ten trials enrolling 68,723 patients were included. Compared with placebo groups, Canagliflozin [HR, 0.85 (95%CI, 0.75-0.98)], ertugliflozin [HR, 0.93 (95%CI, 0.78-1.11)], and sotagliflozin [HR, 0.94 (95%CI, 0.79-1.12)] were associated with a reduction in all-cause mortality. Canagliflozin [HR, 0.84 (95%CI, 0.72-0.97)], dapagliflozin [HR, 0.88 (95%CI, 0.79-0.99)], empagliflozin [HR, 0.62 (95%CI, 0.49-0.78)], ertugliflozin [HR, 0.92 (95%CI, 0.77-1.10)], and sotagliflozin [HR, 0.88 (95%CI, 0.73-1.06)] were associated with a reduction in cardiovascular mortality; Canagliflozin [HR, 0.64 (95%CI, 0.53-0.77)], dapagliflozin [HR, 0.71 (95%CI, 0.63-0.81)], empagliflozin [HR, 0.65 (95%CI, 0.50-0.85)], ertugliflozin [HR, 0.70 (95%CI, 0.54-0.90)], and sotagliflozin [HR, 0.66 (95%CI, 0.56-0.77)] were associated with a reduction in hospitalization for heart failure. Dapagliflozin [HR, 0.55 (95%CI, 0.47-0.63)], Empagliflozin [HR, 0.54 (95%CI, 0.39-0.74)], canagliflozin [HR, 0.64 (95%CI, 0.54-0.75)], sotagliflozin [HR, 0.71 (95%CI, 0.46-1.09)], and ertugliflozin [HR, 0.81 (95%CI, 0.63-1.04)] were associated with a reduction in the renal composite outcome. All SGLT2 inhibitors showed a reduction in cardiovascular mortality, hospitalization for heart failure, renal composite outcomes and all-cause mortality. Canagliflozin and empagliflozin seemed to have the same efficacy in reducing hospitalization for heart failure, but empagliflozin had advantage in reducing cardiovascular mortality, whereas dapagliflozin most likely showed the best renal composite outcomes.
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Affiliation(s)
- Lei Tian
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Sinan Ai
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Huijuan zheng
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Hanwen Yang
- China-Japan Friendship Hospital, Beijing, China
| | - Mengqi Zhou
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Jingyi Tang
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
| | - Wenjing Zhao
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
| | - Yaoxian Wang
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
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Gao Y, Yang R, Guo L, Wang Y, Liu WJ, Ai S, Woon TH, Wang Z, Zhai Y, Wang Z, Peng L. Qing-Re-Xiao-Zheng Formula Modulates Gut Microbiota and Inhibits Inflammation in Mice With Diabetic Kidney Disease. Front Med (Lausanne) 2021; 8:719950. [PMID: 34604258 PMCID: PMC8481597 DOI: 10.3389/fmed.2021.719950] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/17/2021] [Indexed: 01/02/2023] Open
Abstract
Evidence indicates that the metabolic inflammation induced by gut microbiota dysbiosis contributes to diabetic kidney disease. Prebiotic supplementations to prevent gut microbiota dysbiosis, inhibit inflammatory responses, and protect the renal function in DKD. Qing-Re-Xiao-Zheng formula (QRXZF) is a Traditional Chinese Medicine (TCM) formula that has been used for DKD treatment in China. Recently, there are growing studies show that regulation of gut microbiota is a potential therapeutic strategy for DKD as it is able to reduce metabolic inflammation associated with DKD. However, it is unknown whether QRXZF is effective for DKD by regulating of gut microbiota. In this study, we investigated the reno-protective effect of QRXZF by exploring its potential mechanism between gut microbiota and downstream inflammatory pathways mediated by gut-derived lipopolysaccharide (LPS) in the kidney. High-fat diet (HFD) and streptozotocin injection-induced DKD mice model was established to assess the QRXZF effect in vivo. Mice treated with QRXZF for 8 weeks had significantly lower levels of urinary albumin, serum cholesterol and triglycerides. The renal injuries observed through histological analysis were attenuated as well. Also, mice in the QRXZF group had higher levels of Zonula occludens protein-1 (ZO-1) expression, lower levels of serum fluorescein-isothiocyanate (FITC)-dextran and less-damaged colonic mucosa as compared to the DKD group, implying the benefit role for the gut barrier integrity. QRXZF treatment also reversed gut dysbiosis and reduced levels of gut-derived LPS. Notably, the expression of toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB), which are important inflammation pathways in DKD, were suppressed in the QRXZF groups. In conclusion, our results indicated that the reno-protective effects of QRXZF was probably associated with modulating gut microbiota and inhibiting inflammatory responses in the kidney.
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Affiliation(s)
- Yabin Gao
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Ruibing Yang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Lan Guo
- Jitang College of North China University of Science and Technology, Hebei, China
| | - Yaoxian Wang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Wei Jing Liu
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Sinan Ai
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | | | - Zheng Wang
- The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Yuanyuan Zhai
- College of Life Sciences, Hebei University, Hebei, China
- Beijing Key Lab for Immune-Mediated Inflammatory Diseases, Department of Pharmacology, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Zhen Wang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Liang Peng
- Beijing Key Lab for Immune-Mediated Inflammatory Diseases, Department of Pharmacology, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
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Han B, Wang S, Li G, Wang X, Chen Z, Zhao G, Chen Y, Li M, Li Y, Zhang M, Ai S. [Objective sleep characteristics and risk factors for sleep apnea in heart failure patients with different left ventricular ejection fraction]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1415-1419. [PMID: 34658358 DOI: 10.12122/j.issn.1673-4254.2021.09.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the objective sleep characteristics and the independent risk factors for sleep apnea in heart failure (HF) patients with different left ventricular ejection fractions (LVEF). METHODS A total of 107 patients with chronic HF hospitalized in the Department of Cardiology of our hospital from April, 2019 to October, 2020 were included in this study. According to the LVEF measured by echocardiography, the patients were divided into reduced ejection fraction (HFrEF) group (n=35), mid-range ejection fraction (HFmrEF) group (n=21), and preserved ejection fraction (HFpEF) group (n=51). The baseline demographic and clinical characteristics of the patients were recorded. To assess the objective sleep characteristics, whole night polysomnography was scheduled for all the patients. Spearman correlation and multinomial logistic regression analyses were used to explore the factors affecting objective sleep characteristics. RESULTS The patients in HFpEF group had significantly lower proportion of non-rapid eye movement sleep stage 1, apnea hypopnea index (AHI), and central sleep apnea (CSA) than those in HFrEF group (all P < 0.05). The baseline demographic data or sleep structures in HFmrEF group did not differ significantly from those in the other two groups. Spearman correlation analysis revealed significant correlations of the male sex, diuretics use, NT-proBNP, LVEF, and total cholesterol levels with the severity of AHI (all P < 0.05). After adjusting for potential confounders, multiple logistics regression analysis showed that age, drinking, and LVEF levels were independently associated with the severity of AHI (all P < 0.05). CONCLUSION Abnormal objective sleep architectures occur in all HF patients, manifested mainly by sleep apnea. The incidences of sleep apnea and CSA are lower in patients with HFpEF than in those with HFrEF. Age, drinking, and LVEF levels are independent risk factors for the occurrence and severity of sleep apnea.
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Affiliation(s)
- B Han
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - S Wang
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - G Li
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - X Wang
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - Z Chen
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - G Zhao
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - Y Chen
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - M Li
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - Y Li
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
| | - M Zhang
- Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,King's College London British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine & Sciences, London SE59NU, UK
| | - S Ai
- Department of Cardiology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.,Heart Center, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China
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Tian L, Cai Y, Zheng H, Ai S, Zhou M, Luo Q, Tang J, Liu W, Wang Y. Canagliflozin for Prevention of Cardiovascular and Renal Outcomes in type2 Diabetes: A Systematic Review and Meta-analysis of Randomized Controlled Trials. Front Pharmacol 2021; 12:691878. [PMID: 34349651 PMCID: PMC8327383 DOI: 10.3389/fphar.2021.691878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/21/2021] [Indexed: 01/10/2023] Open
Abstract
Objective: We aimed to evaluate the efficacy of canagliflozin for the treatment of specific cardiovascular and renal outcomes in Type 2 diabetes mellitus (T2DM) patients by means of a systematic review and meta-analysis. Methods: We performed comprehensive searches of PubMed, the Cochrane Library, and Embase for randomized, placebo-controlled trials of the treatment of T2DM with canagliflozin that were published to 28 September 2020. The cardiovascular outcomes recorded were cardiovascular mortality, heart failure, myocardial infarction, and stroke. The renal composite outcomes recorded were end-stage renal disease (ESRD), renal death. The data for the principal cardiovascular outcomes, ESRD, and renal death were pooled and expressed as Hazard ratios (HRs) with 95% confidence intervals (CIs). Two reviewers independently selected the trials and extracted the data. Results: We identified a total of 1,741 publications, leaving 96 for their titles, abstracts and full-text review. Of these, 10 trials met the inclusion criteria and were finally included in our meta-analysis. The meta-analysis showed that canagliflozin significantly reduced the risk of heart failure in T2DM by 36% (HR 0.64, 95% CI 0.53 to 0.77, p = 0.000). The effects of canagliflozin on non-fatal myocardial infarction or non-fatal stroke (HR 0.84, 95% CI: 0.76 to 0.93, p = 0.001), cardiovascular mortality (HR 0.84, 95% CI 0.72 to 0.97, p = 0.021), and myocardial infarction (HR 0.84, 95% CI 0.70 to 1.00, p = 0.045) in patients with T2DM were relatively small, reducing the risks by 16%. In addition, canagliflozin reduced the risk of stroke in T2DM patients by 13% (HR 0.87, 95% CI 0.71 to 1.06, p = 0.166). Moreover, canagliflozin significantly reduced the risk of the composite renal event of ESRD or renal death by 36% (HR 0.64, 95% CI 0.54 to 0.75, p = 0.000). Conclusion: This meta-analysis suggests that canagliflozin protects against cardiovascular and renal outcomes in patients with T2DM. Systematic Review Registration: [https://www.crd.york.ac.uk/prospero], identifier [CRD42020210315]
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Affiliation(s)
- Lei Tian
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yuzi Cai
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Huijuan Zheng
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Sinan Ai
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Mengqi Zhou
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Qian Luo
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jingyi Tang
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yaoxian Wang
- Renal Research Institution of Beijing University of Chinese Medicine, and Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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9
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Wang Z, Lu J, Zhou J, Sun W, Qiu Y, Chen W, Gao Y, Yang R, Ai S, Liu Z, Guo Y, Liu WJ, Wang Y, Peng L. Modulation of the Gut Microbiota by Shen-Yan-Fang-Shuai Formula Improves Obesity Induced by High-Fat Diets. Front Microbiol 2020; 11:564376. [PMID: 33408699 PMCID: PMC7779482 DOI: 10.3389/fmicb.2020.564376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 12/03/2020] [Indexed: 11/13/2022] Open
Abstract
Obesity and related metabolic disorders are associated with intestinal microbiota dysbiosis, disrupted intestinal barrier and chronic inflammation. Shen-Yan-Fang-Shuai formula (SYFSF) is a traditional Chinese herbal formula composed of Astragali Radix, Radix Angelicae Sinensis, Rheum Officinale Baill, and four other herbs. In this study, we identified that SYFSF treatment prevented weight gain, low-grade inflammation and insulin resistance in high-fat diet (HFD)-fed mice. SYFSF also substantially improved gut barrier function, reduced metabolic endotoxemia, as well as systemic inflammation. Sequencing of 16S rRNA genes obtained from fecal samples demonstrated that SYFSF attenuated HFD-induced gut dysbiosis, seen an decreased Firmicutes to Bacteroidetes ratios. Microbial richness and diversity were also higher in the SYFSF-treated HFD group. Furthermore, similar therapeutic effects and changes in gut microbiota profile caused by SYFSF could be replicated by fecal microbiota transfer (FMT). Taken together, our study highlights the efficacy of SYFSF in preventing obesity and related metabolic disorders. Its therapeutic effect is associated with the modulation of gut microbiota, as a prebiotic.
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Affiliation(s)
- Zhen Wang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Junfeng Lu
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Jingwei Zhou
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Weiwei Sun
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Yang Qiu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Weihong Chen
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Yabin Gao
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Ruibing Yang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Sinan Ai
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Zhongjie Liu
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Yingbo Guo
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Wei Jing Liu
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Yaoxian Wang
- Department of Nephrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China
| | - Liang Peng
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
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10
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Zheng HJ, Zhang X, Guo J, Zhang W, Ai S, Zhang F, Wang Y, Liu WJ. Lysosomal dysfunction-induced autophagic stress in diabetic kidney disease. J Cell Mol Med 2020; 24:8276-8290. [PMID: 32583573 PMCID: PMC7412686 DOI: 10.1111/jcmm.15301] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/26/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022] Open
Abstract
The catabolic process that delivers cytoplasmic constituents to the lysosome for degradation, known as autophagy, is thought to act as a cytoprotective mechanism in response to stress or as a pathogenic process contributing towards cell death. Animal and human studies have shown that autophagy is substantially dysregulated in renal cells in diabetes, suggesting that activating autophagy could be a therapeutic intervention. However, under prolonged hyperglycaemia with impaired lysosome function, increased autophagy induction that exceeds the degradative capacity in cells could contribute toward autophagic stress or even the stagnation of autophagy, leading to renal cytotoxicity. Since lysosomal function is likely key to linking the dual cytoprotective and cytotoxic actions of autophagy, it is important to develop novel pharmacological agents that improve lysosomal function and restore autophagic flux. In this review, we first provide an overview of the autophagic-lysosomal pathway, particularly focusing on stages of lysosomal degradation during autophagy. Then, we discuss the role of adaptive autophagy and autophagic stress based on lysosomal function. More importantly, we focus on the role of autophagic stress induced by lysosomal dysfunction according to the pathogenic factors (including high glucose, advanced glycation end products (AGEs), urinary protein, excessive reactive oxygen species (ROS) and lipid overload) in diabetic kidney disease (DKD), respectively. Finally, therapeutic possibilities aimed at lysosomal restoration in DKD are introduced.
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Affiliation(s)
- Hui Juan Zheng
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Xueqin Zhang
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Jing Guo
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Wenting Zhang
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Sinan Ai
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Fan Zhang
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Yaoxian Wang
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Wei Jing Liu
- Renal Research Institution of Beijing University of Chinese Medicine, Beijing, China.,Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China.,Institute of Nephrology, and Zhanjiang Key Laboratory of Prevention and Management of Chronic Kidney Disease, Guangdong Medical University, Zhanjiang, China
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11
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Ai S, Lin Y, Zheng J, Qiu C, Liu Y, Lin X. Effects of Shenkangling intervention on the MAPK pathway in rats with doxorubicin-induced nephropathy. Genet Mol Res 2016; 15:gmr8131. [DOI: 10.4238/gmr.15038131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Ai S, Tianchang L, Ningli W, Yuanbo L, Yi P. e0275 Better criterion screening for left ventricular hypertrophy by electrocardiagram with different purposes. Heart 2010. [DOI: 10.1136/hrt.2010.208967.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Abstract
STUDY DESIGN Case report. OBJECTIVE To report a rare lesion of intramedullary cervical tuberculoma. SETTING Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, The People's Republic of China. CASE REPORT A 15-year-old boy presented with pain in the neck and shoulder. Examination showed mild left hemiplegia and pinprink hyperalgesia on the left side up to C3 level. Chest X-ray and CT scan showed patch and dot lesions indicating old tuberculous lesions and MRI showed a ring-enhancing intramedullary lesion at C3/4 level. Tuberculoma resection and antituberculous therapy was given. There was satisfactory recovery clinically. CONCLUSION Intramedullary cervical tuberculoma is a rare, coexisting systemic tuberculosis and MRI scan helps in obtaining a correct diagnosis; combining surgery with anti-tuberculosis therapy is the treatment of choice.
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Affiliation(s)
- J Lin
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Gaotanyan, Shapingba District, Chongqing, The People's Republic of China
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14
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Ai S, Kuzuya M, Koike T, Asai T, Kanda S, Maeda K, Shibata T, Iguchi A. Rho-Rho kinase is involved in smooth muscle cell migration through myosin light chain phosphorylation-dependent and independent pathways. Atherosclerosis 2001; 155:321-7. [PMID: 11254902 DOI: 10.1016/s0021-9150(00)00585-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Although Rho, a small GTPase, has been demonstrated to play an important role in the smooth muscle contraction and relaxation, little is known about the involvement of Rho protein in smooth muscle cell (SMC) migration. In this study the role of Rho-Rho kinase pathway was examined in SMC migration induced by platelet-derived growth factor (PDGF) and lysophosphatidic acid (LPA). C3 transferase, a specific inhibitor of Rho, blocked SMC migration induced by PDGF and LPA. Y-27632, a specific inhibitor of Rho kinase, a direct target molecule of Rho, inhibited PDGF and LPA-induced SMC migration in a concentration dependent manner. Although rapid increase in myosin light chain (MLC) phosphorylation in SMC treated with LPA was observed, no enhanced MLC phosphorylation was detected in response to PDGF. Y-27632 suppressed LPA-induced as well as basal level of MLC phosphorylation. ML-9, a specific inhibitor of myosin light chain kinase (MLCK), inhibited PDGF and LPA-induced SMC migration without the suppression of MLC phosphorylation at 5 min incubation, suggesting that MLCK may contribute to SMC migration via mechanism other than MLC phosphorylation. These results suggest that Rho-Rho kinase pathway is implicated in SMC migration and that different signaling pathways downstream of Rho-Rho kinase may be involved in LPA and PDGF-induced SMC migration. MLC phosphorylation via Rho-Rho kinase pathway appears to be implicated in LPA-dependent SMC migration. Whereas PDGF-mediated SMC migration is independent of increased MLC phosphorylation and other target molecules downstream of Rho-Rho kinase seem to be involved.
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Affiliation(s)
- S Ai
- Department of Geriatrics, Nagoya Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, 466-8550, Nagoya, Japan
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15
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Abstract
We obtain necessary and sufficient conditions on the existence of a unique positive equilibrium point and a set of sufficient conditions on the existence of periodic solutions for a 3-dimensional system which arises from a model of competition between plasmid-bearing and plasmid-free organisms in a chemostat with an inhibitor. Our results improve the corresponding results obtained by Hsu, Luo, and Waltman [1].
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Affiliation(s)
- S Ai
- Department of Mathematics, University of Pittsburgh, PA 15216, USA.
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16
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Abstract
Advanced glycation endproduct (AGE) accumulation in extracellular matrix proteins has been demonstrated in diabetic patients with a significant correlation with the severity of diabetic complications. AGE accumulation induces matrix protein cross-link formation, resulting in an increased stiffness of matrix fibres and the reduction of the susceptibility of matrix proteins to proteolytic degradation. We examined whether glycation-induced collagen cross-linking may affect vascular endothelial cell behaviours such as invasion, proliferation and differentiation, using the in vitro angiogenesis model of capillary-like structure formation in three-dimensional matrices of collagen type I. Endothelial cells cultured on collagen gel with angiogenic factors (the combination of fibroblast growth factor-2 and vascular endothelial growth factor) invaded the underlying collagen matrix, and organized capillary-like cord structures in the gel. We found that endothelial cell invasion into glycated collagen gel was significantly attenuated without any effect on proteinase activity including cell-associated plasminogen activator and matrix metalloproteinase in the conditioned medium. In addition, subsequent capillary-like cord formation was also inhibited in glycated collagen gel. In contrast, endothelial cell proliferation was enhanced on glycated collagen gel with or without angiogenic factors compared with control collagen gel. These results suggest that the structural alterations of extracellular matrix proteins through the glycation-induced cross-link formation affect the interaction between endothelial cell and extracellular matrix, resulting in the impairment of an adequate neovascularization in diabetic patients.
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Affiliation(s)
- M Kuzuya
- Department of Geriatrics, Nagoya University School of Medicine, Japan
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17
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Wang D, Ai S, Xu J. [Experimental research on porcelain fused to the surface of pure titanium and titanium alloys]. Zhonghua Kou Qiang Yi Xue Za Zhi 1995; 30:201-3, 255. [PMID: 8745438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Titanium material has been widely used in prosthodontics since the end of 1980s. However, the research on porcelain fused to the surfaces of titanium material was quite few. This article introduced the technological process of low-fusing dental porcelain--Ceratin fused to pure titanium and titanium alloys. The values of the bond strength of Ceratin and titanium substrates were obtained by shearing test with INSTRON Model-1185. The average value of the shearing strength between TA2 and Ceratin was 31. 01MPa. The corresponding value between TC4 and Ceratin was 33.73MPa. The interface between Ceratin and titanium substrate was observed with scanning electron microscope (SEM). The results of this research proposed that it is hopeful that Ceratin is used as special procelain with titanium material.
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Affiliation(s)
- D Wang
- School of Stomatology, Fourth Military Medical University, Xian
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18
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Kato M, Ito Y, Takeuchi M, Matsunami I, Ai S. [The dimensional change of dental stone inside impression material (part 1)]. Aichi Gakuin Daigaku Shigakkai Shi 1977; 14:386-91. [PMID: 291351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Takahashi Y, Kominami H, Komoda Y, Ai S, Nakagaki H. [Studies on the solubility of bismuth compounds]. Aichi Gakuin Daigaku Shigakkai Shi 1974; 12:137-43. [PMID: 4533390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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20
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Takahashi Y, Kominami H, Komoda Y, Ai S. [Determination of bismuth by atomic absorption spectroscopy]. Aichi Gakuin Daigaku Shigakkai Shi 1974; 12:24-30. [PMID: 4530629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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21
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Araki Y, Ai S, Umemura K, Sakai T, Dasai A. [A study on adhesive characteristics of ethyl-2-cyano acrylate (ECA) to hard tooth tissue. Effects of tooth surface treatment]. Aichi Gakuin Daigaku Shigakkai Shi 1972; 9:256-63. [PMID: 4554803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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22
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Imai Y, Sakurai Y, Noguchi H, Ai S. [Comparative study of the mechanical properties of commercial denture base resins]. Shikwa Gakuho 1967; 67:1520-4. [PMID: 5244471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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23
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Ai S. [Study on traditional tooth blacking]. Shikwa Gakuho 1967; 67:1281-301. [PMID: 5241692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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24
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Takahashi S, Ichikawa A, Sakurai Y, Noguchi H, Ai S. [Evaluation of a condensing apparatus for making specimens of dental amalgam]. Shikwa Gakuho 1967; 67:1236-41. [PMID: 5240084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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25
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Takizawa M, Tomita T, Ai S. [Adhesive strength of grip cement]. Shikwa Gakuho 1967; 67:745-50. [PMID: 5236120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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26
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Sugimura T, Ai S. [Effect of addition of polymethyl metaacrylate (PMMA) on the adhesiveness of alkyl-alpha-cyanoacrylate]. Shikwa Gakuho 1967; 67:402-6. [PMID: 5234654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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27
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Ai S, Ishikawa T, Seino A. "Ohaguro" traditional tooth staining custom in Japan. Int Dent J 1965; 15:426-41. [PMID: 5216335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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