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Ye L, Li C, Zhao X, Ou W, Wang L, Wan M. Exploring the pharmacological mechanism of Tripterygium wilfordii hook for treatment of Behcet's disease using network pharmacology and molecular docking. Medicine (Baltimore) 2023; 102:e34512. [PMID: 37861497 PMCID: PMC10589559 DOI: 10.1097/md.0000000000034512] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/05/2023] [Indexed: 10/21/2023] Open
Abstract
Tripterygium wilfordii hook (TWH) has been used to treat Behcet's disease (BD) but its underlying mechanism remains unclear. This study aims to explore the mechanism of TWH on BD using network pharmacology and molecular docking. The bioactive constituents of TWH and their corresponding target genes were extracted from the Traditional Chinese Medicine systems pharmacology database and analysis platform. BD target genes were obtained by searching the DisGeNet and GeneCards databases. Gene ontology annotation and Kyoto encyclopedia of genes and genomes pathway enrichment analysis were conducted to elucidate the function of overlapping genes between TWH and BD target genes. A protein-protein interaction network was constructed using Cytoscape and STRING platforms, and the core target genes were identified from the overlapping genes. Finally, molecular docking was used to assess the binding affinity between the core targets and TWH bioactive constituents. We identified 25 intersection genes related to both TWH and BD and 27 bioactive ingredients of TWH. Through analysis of protein-protein interaction network, 6 core targets (TNF, IFNG, prostaglandin-endoperoxide synthase 2, NOS2, VCAM-1, and interleukin-2) were screened out. Enrichment analysis demonstrated that the antioxidant properties of TWH constituents might play a significant role in their therapeutic effects. Molecular docking revealed high binding affinity between the bioactive constituents of TWH, such as kaempferol, triptolide, 5, 8-Dihydroxy-7-(4-hydroxy-5-methyl-coumarin-3)-coumarin, and their corresponding target genes, suggesting the potential of TWH to treat BD. Our investigation clarified the active components, therapeutic targets of BD in the treatment of TWH and provided a theoretical foundation for further researches.
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Affiliation(s)
- Lihua Ye
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Hainan, China
| | - Changrong Li
- Medical Cosmetology Clinic, Hainan Yilimei Medical Cosmetology Co., Hainan, China
| | - Xiaoxia Zhao
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Hainan, China
| | - WeiHong Ou
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Hainan, China
| | - Li Wang
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Hainan, China
| | - Mengjie Wan
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Hainan, China
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Ge F, Wan M, Cheng Z, Chen X, Chen Q, Qi Z. [Aloin inhibits gastric cancer cell proliferation and migration by suppressing the STAT3/HMGB1 signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:702-709. [PMID: 37313810 DOI: 10.12122/j.issn.1673-4254.2023.05.04] [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: 06/15/2023]
Abstract
OBJECTIVE To investigate the molecular mechanism underlying the inhibitory effect of aloin on the proliferation and migration of gastric cancer cells. METHODS Human gastric cancer MGC-803 cells treated with 100, 200 and 300 μg/mL aloin were examined for changes in cell viability, proliferation and migration abilities using CCK-8, EdU and Transwell assays. HMGB1 mRNA level in the cells was detected with RT-qPCR, and the protein expressions of HMGB1, cyclin B1, cyclin E1, E-cadherin, MMP-2, MMP-9 and p-STAT3 were determined using Western blotting. JASPAR database was used to predict the binding of STAT3 to HMGB1 promoter. In a BALB/c-Nu mouse model bearing subcutaneous MGC-803 cell xenograft, the effect of intraperitoneal injection of aloin (50 mg/kg) on tumor growth was observed. The protein expressions of HMGB1, cyclin B1, cyclin E1, E-cadherin, MMP-2, MMP-9 and p-STAT3 in the tumor tissue was examined using Western blotting, and tumor metastasis in the liver and lung tissues was detected using HE staining. RESULTS Treatment with aloin concentration-dependently inhibited the viability of MGC-803 cells (P < 0.05), significantly reduced the number of EdU-positive cells (P < 0.01), and attenuated the migration ability of the cells (P < 0.01). Aloin treatment dose-dependently down-regulated HMGB1 mRNA expression (P < 0.01), lowered the protein expressions of HMGB1, cyclin B1, cyclin E1, MMP-2, MMP-9 and p-STAT3, and up-regulated E-cadherin expression in MGC-803 cells. Prediction based on JASPAR database suggested that STAT3 could bind to the promoter region of HMGB1. In the tumor-bearing mice, aloin treatment significantly reduced the tumor size and weight (P < 0.01), lowered the protein expressions of cyclin B1, cyclin E1, MMP-2, MMP-9, HMGB1 and p-STAT3 and increased the expression of E-cadherin in the tumor tissue (P < 0.01). CONCLUSION Aloin attenuates the proliferation and migration of gastric cancer cells by inhibiting the STAT3/HMGB1 signaling pathway.
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Affiliation(s)
- F Ge
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - M Wan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Z Cheng
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
- School of Clinical Medicine, Wannan Medical College, Wuhu 241002, China
| | - X Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
| | - Q Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
| | - Z Qi
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Wannan Medical College, Wuhu 241002, China
- Anhui Provincial Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu 241002, China
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Wan M, Yang X. Maternal exposure to antibiotics and risk of atopic dermatitis in childhood: a systematic review and meta-analysis. Front Pediatr 2023; 11:1142069. [PMID: 37255572 PMCID: PMC10225666 DOI: 10.3389/fped.2023.1142069] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/28/2023] [Indexed: 06/01/2023] Open
Abstract
Background Although the association between maternal exposure to antibiotics and the risk of atopic dermatitis (AD) in childhood has been studied extensively, there still is a lack of clarity on the topic. The aim of this study was to summarize the published data and to examine if maternal exposure to antibiotics increases the risk of AD in childhood. Methods Systematic search was performed in PubMed, Scopus, Web of Science, and Embase for all types of studies on the review subject independent of any language restrictions and published up to 28th December 2022. Data was analyzed using random-effects model and presented as pooled odds ratio (OR) with 95% confidence intervals (CI). Results A total of 18 studies (5,354,282 mother-child pairs) were included. Maternal exposure to antibiotics was associated with an increased risk of AD in childhood (OR: 1.14, 95% CI: 1.06, 1.22, I2 = 85%, p = 0.0003). The significance of the results was not affected by the location of the study (Asia or Europe). While subgroup analysis based on exposure assessment or diagnosis of AD demonstrated a tendency of increased risk of AD, the association was not statistically significant in multiple subgroups. Segregating data based on the timing of exposure did not affect the significance of the results for studies on all trimesters. However, there was no association between antibiotic exposure in the third trimester or just before delivery and the risk of childhood AD. Conclusion The results of this meta-analysis suggest that maternal exposure to antibiotics may lead to a modestly increased risk of AD in offspring. The evidence is limited by high interstudy heterogeneity and bias in exposure and outcome assessment. Future studies are needed to explore if the timing of exposure, the dose, the number of prescriptions, and the type of antibiotic affect this association. Systematic Review Registration https://www.crd.york.ac.uk/prospero/, identifier CRD42023387233.
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Affiliation(s)
- Mengjie Wan
- Department of Dermatology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People’s Hospital, Haikou, Hainan, China
| | - Xiaoyang Yang
- Department of Hematology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People’s Hospital, Haikou, Hainan, China
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Butson C, Kingon A, Quinn C, Ratsch A, Wan M. The dilemma of Pituri-further information for oral disease clinicians. Aust Dent J 2023; 68:70-71. [PMID: 36504409 DOI: 10.1111/adj.12947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2022] [Indexed: 12/14/2022]
Affiliation(s)
- C Butson
- Flynn Drive Dental Centre, Alice Springs, Northern Territory, Australia
| | - A Kingon
- Flynn Drive Dental Centre, Alice Springs, Northern Territory, Australia
| | - C Quinn
- Flynn Drive Dental Centre, Alice Springs, Northern Territory, Australia
| | - A Ratsch
- Research Services, Wide Bay Hospital and Health Service, Hervey Bay Hospital, Hervey Bay, Queensland, Australia
| | - M Wan
- Flynn Drive Dental Centre, Alice Springs, Northern Territory, Australia
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Wan M, Li YT, Zheng LW, Zhou XD. [Epigenetic regulation mechanism: roles in enamel formation and developmental defects of enamel]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:68-74. [PMID: 36642455 DOI: 10.3760/cma.j.cn112144-20221019-00542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Enamel formation is a series of complex physiological processes, which are regulated by critical genes spatially and temporally. These processes involve multiple developmental stages covering ages and are prone to suffer signal interference or gene mutations, ultimately leading to developmental defects of enamel (DDE). Epigenetic modifications have important regulatory roles in gene expression during enarnel development. New technologies including high-throughput sequencing, chromatin immunoprecipitation sequencing (ChIP-seq), and DNA methylation chip are emerging in recent years, making it possible to establish genome-wide epigenetic modification profiles during developmental processes. The regulatory role of epigenetic modification with spatio-temporal pattern, such as DNA methylation, histone modification and non-coding RNA, has significantly expanded our understanding of the regulatory network of enamel formation, providing a new theoretical basis of clinical management and intervention strategy for DDE. The present review briefly describes the enamel formation process of human beings' teeth as well as rodent incisors and summarizes the dynamic characteristics of epigenetic modification during enamel formation. The functions of epigenetic modification in enamel formation and DDE are also emphatically discussed.
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Affiliation(s)
- M Wan
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - Y T Li
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - L W Zheng
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - X D Zhou
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
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Abstract
Ustekinumab (brand name Stelara®) is a human interleukin-12 and -23 antagonist and has been indicated for the treatments of moderate to severe plaque psoriasis, psoriatic arthritis, Crohn's disease and ulcerative colitis. This review aims to synthesize and interpret the literature evaluating the off-label uses of ustekinumab. We performed searches in PubMed and ClinicalTrials.gov for clinical trials, observational studies, case series, and case reports evaluating label uses of ustekinumab. Studies evaluated the efficacy of ustekinumab for the following conditions: other types of psoriasis (expect plaque psoriasis and psoriatic arthritis), pityriasis rubra pilaris, hidradenitis suppurativa, atopic dermatitis, pyoderma gangrenosum, et al. Based on the available literature, ustekinumab appears to be a potential treatment choice for many other diseases. However, more clinical trials data are needed to adequately assess the safety and efficacy of ustekinumab for the treatment of these conditions.
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Affiliation(s)
- Lihua Ye
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Zhenfei Wu
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Changrong Li
- Medical Cosmetology Clinic, Hainan Yilimei Medical Cosmetology Co., Haikou, China
| | - Xiaoxia Zhao
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Mengjie Wan
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Li Wang
- Department of Dermatology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
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Wan M, Yan L, Xu Z, Hou Z, Kang K, Cui R, Yu Y, Song J, Hui F, Wang Y, Miao Z, Lou X, Ma N. Symptomatic and Asymptomatic Chronic Carotid Artery Occlusion on High-Resolution MR Vessel Wall Imaging. AJNR Am J Neuroradiol 2022; 43:110-116. [PMID: 34857516 PMCID: PMC8757554 DOI: 10.3174/ajnr.a7365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/28/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND PURPOSE Chronic carotid artery occlusion remains a poorly understood risk factor for subsequent stroke, and potential revascularization is dependent on understanding the anatomy and nature of the occlusion. Luminal imaging cannot assess the nature of an occlusion, so the internal structure of the occlusion must be inferred. The present study examines the signal characteristics of symptomatic and asymptomatic carotid occlusion that may point to management differentiation. MATERIALS AND METHODS We prospectively recruited patients who were diagnosed with chronic carotid artery occlusion defined as longer than 4 weeks and confirmed by DSA. All patients underwent high-resolution MR vessel wall imaging examinations after enrollment. Baseline characteristics, vessel wall imaging features, and DSA features were collected and evaluated. The vessel wall imaging features included segment involvement, signal intensity, contrast enhancement, and vessel wall thickness. The symptomatic and asymptomatic chronic carotid artery occlusions were compared. RESULTS A total of 44 patients with 48 lesions were included in this study from February 2020 to December 2020. Of the 48 lesions, 35 (72.9%) were symptomatic and 13 (27.1%) were asymptomatic. There was no difference in baseline and DSA features. On vessel wall imaging, C1 and C2 were the most commonly involved segments (91.7% and 68.8%, respectively). Compared with symptomatic lesions, asymptomatic lesions were more often isointense (69.2%) in the distal segment (P = .03). Both groups had diffuse wall thickening (80% and 100%). CONCLUSIONS Signal characteristics between those with symptomatic and asymptomatic carotid artery occlusions differ in a statistically significant fashion, indicating a different structure of the occlusion.
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Affiliation(s)
- M. Wan
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China,Department of Neurology (M.W.), Shijingshan Teaching Hospital of Capital Medical University, Beijing Shijingshan Hospital, Beijing, China
| | - L. Yan
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - Z. Xu
- Department of Neurology (Z.X.), The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Z. Hou
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - K. Kang
- Neurology (K.K., Y.W.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China,China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - R. Cui
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - Y. Yu
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - J. Song
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - F.K. Hui
- Department of Radiology and Radiological Sciences (F.K.H.), Johns Hopkins Hospital, Baltimore, Maryland
| | - Y. Wang
- Neurology (K.K., Y.W.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China,China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - Z. Miao
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
| | - X. Lou
- Department of Radiology (X.L.), Chinese PLA General Hospital, Beijing, China
| | - N. Ma
- From the Department of Interventional Neuroradiology (M.W., L.Y., Z.H., R.C., Y.Y., J.S., Z.M., N.M.),China National Clinical Research Center for Neurological Diseases (M.W., L.Y., Z.H., K.K., R.C., Y.Y., J.S., Y.W., Z.M., N.M.), Beijing, China
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Yang X, Wan M, Yu F, Wu X. Histone methyltransferase EZH2 epigenetically affects CCNA1 expression in acute myeloid leukemia. Cell Signal 2021; 87:110144. [PMID: 34509612 DOI: 10.1016/j.cellsig.2021.110144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/30/2021] [Accepted: 09/07/2021] [Indexed: 11/28/2022]
Abstract
Cyclin A1 (CCNA1) is an alternative A-type cyclin that is expressed in acute myeloid leukemia (AML). However, its functions in AML cell chemoresistance, an important cause for mortality, are incompletely understood. The purpose of this study was to expound the role and potential mechanism of CCNA1 in AML cell chemoresistance. Upregulation of CCNA1 promoted resistance of AML cells to PKC412, AC220, and AraC. Mechanistically, it was confirmed that CCNA1 transcription was negatively regulated by forkhead box A2 (FOXA2), and the downregulation of FOXA2 promoted chemoresistance in AML cells. Moreover, the promoter sequence of CCNA1 has a significant H3K27me3 modification. Enhancer of zeste homolog 2 (EZH2) enhanced H3K27me3 modification of CCNA1 promoter to inhibit CCNA1 expression, thus promoting sensitivity of AML cells to drugs. Taken together, these findings lead to deeper insights into the mechanism of AML cell chemo-sensitivity by inhibiting CCNA1 at the transcriptional level.
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Affiliation(s)
- Xiaoyang Yang
- Department of Hematology, Haikou Municipal Hospital & Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou 570208, Hainan, PR China.
| | - Mengjie Wan
- Department of Hematology, Haikou Municipal Hospital & Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou 570208, Hainan, PR China
| | - Feng Yu
- Department of Hematology, Haikou Municipal Hospital & Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou 570208, Hainan, PR China
| | - Xiuji Wu
- Department of Laboratory Medicine, Haikou Municipal Hospital & Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou 570208, Hainan, PR China
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Yu M, Li R, Wan M, Chen J, Shen X, Li G, Ge M, Zhang R. MDA5 attenuate autophagy in chicken embryo fibroblasts infected with IBDV. Br Poult Sci 2021; 63:154-163. [PMID: 34406094 DOI: 10.1080/00071668.2021.1969643] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. The role of melanoma differentiation-associated protein 5 (MDA5) in infectious bursal disease virus (IBDV)-induced autophagy was studied in chicken embryos.2. Chicken embryo fibroblasts (CEF) were used as the research model and small interfering RNA (siRNA), western blot, indirect enzyme-linked immunosorbent assay (ELISA), real-time fluorescence quantitative polymerase chain reaction (PCR) and transmission electron microscopy were used to detect autophagy, IBDV replication, CEF damage, and activation of both MDA5 and its signalling pathway.3. The results showed that CEF infected with IBDV activated the intracellular MDA5 signalling pathway and caused autophagy via inactivation of the AKT/mTOR pathway. While autophagy promotes IBDV proliferation, MDA5 weakens IBDV-induced CEF autophagy thus inhibiting IBDV replication and protecting CEF cells.4. The results indicated that chMDA5 can be activated by IBDV and attenuate CEF autophagy caused by IBDV infection, thereby inhibiting IBDV replication. This study provided a foundation for further exploring the relationship between viruses, autophagy and the pathogenic mechanism of the MDA5 pathway involved in IBDV.
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Affiliation(s)
- M Yu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - R Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - M Wan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - J Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - X Shen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - G Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - M Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
| | - R Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, People's Republic of China
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Wan M, Zhao D, Zheng B, Xiao S, Sun Y, Wang W. PO-0958 Comparison of CCRT and RT alone after Induction Chemotherapy for Hypopharyngeal Cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07409-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wan M, Zhao D, Zheng B, Xiao S, Sun Y. PO-0993 Malnutrition by GLIM criteria is a risk factor for survival of NPC patients undergoing radiotherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07444-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Liu B, Gao T, Wu HY, Wan M. Erb-B2 receptor tyrosine kinase 2 knockdown inhibits retinoblastoma progression via Wnt/β-catenin signaling pathway in vitro. J BIOL REG HOMEOS AG 2021; 35:209-214. [PMID: 33480220 DOI: 10.23812/20-594-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- B Liu
- Department of Sports Medicine, Qingdao Municipal Hospital, Qingdao, China
| | - T Gao
- Department of Obstetricsn (III), Qingdao Municipal Hospital, Qingdao, China
| | - H Y Wu
- Department of Hematology, Qingdao Municipal Hospital, Qingdao, China
| | - M Wan
- Department of Ophthalmology and Stomatology, Qingdao Municipal Hospital, Qingdao, China
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Li H, Cui D, Zheng L, Zhou Y, Gan L, Liu Y, Pan Y, Zhou X, Wan M. Bisphenol A Exposure Disrupts Enamel Formation via EZH2-Mediated H3K27me3. J Dent Res 2021; 100:847-857. [PMID: 33655795 DOI: 10.1177/0022034521995798] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Enamel formation is a serial and complex biological process, during which related genes are expressed progressively in a spatiotemporal manner. This process is vulnerable to environmental cues, resulting in developmental defects of enamel (DDE). However, how environmental factors are biologically integrated during enamel formation is still poorly understood. Here, we investigated the mechanism of DDE elicited by a model endocrine-disrupting chemical, bisphenol A (BPA), in mouse incisors. We show that BPA exposure leads to DDE in mouse incisors, as well as excessive proliferation in dental epithelial stem/progenitor cells. Western blotting, chromatin immunoprecipitation sequencing, and immunofluorescence staining revealed that this effect was accompanied by upregulation of a repressive mark, H3K27me3, in the labial cervical loop of mouse incisors. Perturbation of H3K27me3 methyltransferase EZH2 repressed the level of H3K27me3 and partially attenuated the excessive proliferation in dental epithelial stem/progenitor cells and DDE induced by BPA exposure. Overall, our results demonstrate the essential role of repressive histone modification H3K27me3 in DDE elicited by exposure to an endocrine-disrupting chemical.
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Affiliation(s)
- H Li
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D Cui
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Gan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Liu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Pan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - M Wan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Wan M, Qiu X, Lu Q. High expression of VTRNA2-1 in systemic lupus erythematosus patients' B lymphocytes and its significance. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2020; 45:123-127. [PMID: 32386035 DOI: 10.11817/j.issn.1672-7347.2020.180546] [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: 11/03/2022]
Abstract
OBJECTIVES To investigate the expression of vault ribonucleic acid 2-1 (VTRNA2-1) in T or B lymphocytes in patients with systemic lupus erythematosus (SLE) from the perspective of epigenetic non-coding RNA, and to explore the preliminary pathogenesis of SLE. METHODS CD4+ T lymphocytes from peripheral blood in 25 healthy controls and 32 SLE patients, CD19+ B lymphocytes from peripheral blood in 62 SLE patients (47 patients were active SLE and 15 patients were inactive) and 29 healthy controls were collected, and the expression levels of VTRNA2-1 were detected by real-time PCR. Co-immunoprecipitation assay was used to explore the direct-acting proteins of VTRNA2-1. RESULTS Through the detection of VTRNA2-1 in peripheral blood T cells and B cells in the SLE patients and healthy controls, we have found that there was no significant difference in the expression of VTRNA2-1 in T cells between the SLE patients and the healthy controls (P>0.05). The expression of VTRNA2-1 in B cells in the active and inactive SLE patients was both higher than that in the healthy controls, with significant difference (P<0.01 and P<0.05, respectively). Co-immunoprecipitation assay confirmed that VTRNA2-1 exerted its biological function via specific binding with protein kinase R (PKR). CONCLUSIONS VTRNA2-1 is highly expressed in B cells in the SLE patients, which may play a biological role by regulating PKR.
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Affiliation(s)
- Mengjie Wan
- Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011 .,Department of Dermatology, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University; Haikou Municipal People's Hospital, Haikou 570208, China
| | - Xiangning Qiu
- Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011
| | - Qianjin Lu
- Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011
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15
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Cao ZZ, Xu JW, Gao M, Li XS, Zhai YJ, Yu K, Wan M, Luan XH. Prevalence and antimicrobial resistance of Salmonellaisolates from goose farms in Northeast China. Iran J Vet Res 2020; 21:287-293. [PMID: 33584841 PMCID: PMC7871741] [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] [Received: 07/10/2020] [Revised: 09/27/2020] [Accepted: 10/07/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Salmonella is one of the most important enteric pathogenic bacteria that threatened poultry health. AIMS This study aimed to investigate the prevalence and antimicrobial resistance of Salmonella isolates in goose farms. METHODS A total of 244 cloacal swabs were collected from goose farms to detect Salmonella in Northeast China. Antimicrobial susceptibility, and resistance gene distribution of Salmonella isolates were investigated. RESULTS Twenty-one Salmonella isolates were identified. Overall prevalence of Salmonella in the present study was 8.6%. Among the Salmonella isolates, the highest resistance frequencies belonged to amoxicillin (AMX) (85.7%), tetracycline (TET) and trimethoprim/sulfamethoxazole (SXT) (81%), followed by chloramphenicol (CHL) (76.2%), florfenicol (FLO) (71.4%), kanamycin (KAN) (47.6%), and gentamycin (GEN) (38.1%). Meanwhile, only 4.8% of the isolates were resistant to ciprofloxacin (CIP) and cefotaxime (CTX). None of the isolates was resistant to cefoperazone (CFP) and colistin B (CLB). Twenty isolates (95%) were simultaneously resistant to at least two antimicrobials. Ten resistance genes were detected among which the bla TEM-1, cmlA, aac(6')-Ib-cr, sul1, sul2, sul3, and mcr-1.1 were the most prevalent, and presented in all 21 isolates followed by tetB (20/21), qnrB (19/21), and floR (15/21). CONCLUSION Results indicated that Salmonella isolates from goose farms in Northeast China exhibited multi-drug resistance (MDR), harboring multiple antimicrobial resistance genes. Our results will be useful to design prevention and therapeutic strategies against Salmonella infection in goose farms.
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Affiliation(s)
- Z. Z. Cao
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - J. W. Xu
- MSc Student in Basic Veterinary Medicine, Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - M. Gao
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - X. S. Li
- MSc Student in Basic Veterinary Medicine, Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - Y. J. Zhai
- MSc Student in Basic Veterinary Medicine, Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - K. Yu
- MSc Student in Basic Veterinary Medicine, Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - M. Wan
- MSc Student in Basic Veterinary Medicine, Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - X. H. Luan
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
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Tian D, Liu Y, Tian L, Wan M, Zheng B, Shi X. Involvement of Populus CLEL peptides in root development. Tree Physiol 2019; 39:1907-1921. [PMID: 31384947 DOI: 10.1093/treephys/tpz084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
As one of the major groups of small post-translationally modified peptides, the CLV3/EMBRYO SURROUNDING REGION-RELATED (CLE)-like (CLEL) peptide family has been reported to regulate root growth, lateral root development and plant gravitropic responses in Arabidopsis thaliana. In this study, we identified 12 CLEL genes in Populus trichocarpa and performed a comprehensive bioinformatics analysis on these genes. Among them, five P. trichocarpa CLELs (PtrCLELs) were revised with new gene models. All of these PtrCLEL proteins were structurally similar to the A. thaliana CLELs (AtCLELs), including an N-terminal signal peptide, a conserved C-terminal 13-amino-acid CLEL motif and a variable intermediate region. In silico and quantitative real-time PCR analyses showed that PtrCLELs were widely expressed in various tissues, including roots, leaves, buds and stems. Exogenous application of chemically synthesized PtrCLEL peptides resulted in wavy or curly roots and reduced lateral root formation in A. thaliana. Moreover, germinating Populus deltoides seedlings on a growth medium containing these peptides caused the roots to thicken and to form abnormal lateral roots, in many cases in clusters. Anatomical and histological changes in thickened roots were further investigated by treating Populus 717 cuttings with the PtrCLEL10 peptide. We observed that root thickening was mainly due to an increased number of cells in the epidermis, hypodermis and cortex. The results of our study suggested that PtrCLEL and AtCLEL genes encode proteins with similar protein structures, sequences of peptide motif and peptide activities on developing roots. The activities of PtrCLEL peptides in root development were species-dependent.
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Affiliation(s)
- Dongdong Tian
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
| | - Yueyuan Liu
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Weigang road number 1, Xuanwu district, Nanjing 210095, China
| | - Lidan Tian
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
| | - Mengjie Wan
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
| | - Bo Zheng
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
- Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
| | - Xueping Shi
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
- Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Shizishan street number 1, Hongshan district, Wuhan 430070, China
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Liu Z, Wan M, Zhu H. Fallopian tube ectopic pregnancy with renal duct cyst. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4836.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yang X, Wan M, Cheng Z, Wang Z, Wu Q. Tofacitinib inhibits ox-LDL-induced adhesion of THP-1 monocytes to endothelial cells. Artif Cells Nanomed Biotechnol 2019; 47:2775-2782. [PMID: 31284768 DOI: 10.1080/21691401.2019.1573740] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Atherosclerosis is a chronic inflammatory disease of the blood vasculature. Endothelial dysfunction is an early event in the development of atherosclerosis and the endothelium plays an important role in the innate immune defense in the pathology of cardiovascular diseases. New therapies are being developed based on the involvement of the immune system in atherosclerosis. In this study, we demonstrate that a commonly used anti-rheumatic drug, tofacitinib, possesses vascular protective properties in cultured primary human aortic endothelial cells (HAECs). Tofacitinib ameliorates oxidized low-density lipoprotein (ox-LDL)-induced adhesion of THP-1 cells to HAECs, suppresses the expression of vascular adhesion molecules and production of cytokines, including vascular cell adhesion molecule 1 (VCAM-1), intercellular cell adhesion molecule-1 (ICAM-1), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β). Moreover, tofacitinib inhibits elevation of endothelial lectin-like ox-LDL receptor-1 (LOX-1) and production of reactive oxygen species (ROS) triggered by ox-LDL. As a result, the presence of tofacitinib reduces ox-LDL-induced cytotoxicity and improves endothelial viability. Mechanistically, we demonstrate that tofacitinib suppresses ox-LDL-mediated activation of NF-κB inhibitor α (IκB-α), accumulation of nuclear p65 and activation of nuclear factor κB (NF-κB) promoter, indicating that tofacitinib inhibits NF-κB activation. Collectively, our data support that tofacitinib possesses a novel protective function in endothelial cells, implying that tofacitinib could have the therapeutic potential to modulate inflammation in cardiovascular diseases.
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Affiliation(s)
- Xiaoyang Yang
- a Department of Hematology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People's Hospital , Haikou , Hainan , China
| | - Mengjie Wan
- a Department of Hematology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People's Hospital , Haikou , Hainan , China
| | - Zhiyong Cheng
- a Department of Hematology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People's Hospital , Haikou , Hainan , China
| | - Zhiming Wang
- a Department of Hematology, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People's Hospital , Haikou , Hainan , China
| | - Qingxia Wu
- b Department of Nursing, Affiliated Haikou Hospital Xiangya School Central South University and Haikou Municipal Municipal People's Hospital , Haikou , Hainan , China
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Yang X, Wan M, Yu F, Wang Z. Efficacy and safety of plerixafor for hematopoietic stem cell mobilization for autologous transplantation in patients with non-Hodgkin lymphoma and multiple myeloma: A systematic review and meta-analysis. Exp Ther Med 2019; 18:1141-1148. [PMID: 31363366 PMCID: PMC6614714 DOI: 10.3892/etm.2019.7691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 05/10/2019] [Accepted: 06/17/2019] [Indexed: 11/08/2022] Open
Abstract
Plerixafor in combination granulocyte-colony stimulating factor (G-CSF) has been used for the mobilization of hematopoietic stem cells (HSCs) to the peripheral blood for collection and subsequent autologous transplantation in patients with non-Hodgkin lymphoma (NHL) and multiple myeloma (MM). The aim of this study was to systematically search the published literature and analyze evidence on the efficacy of additional plerixafor for successful HSC mobilization in patients with NHL and MM, and to evaluate the safety of the drug. The PubMed, Scopus, Cochrane Central Register of Controlled Trials (CENTRAL) and Google scholar databases were searched electronically for studies published in the English language up to March, 2019. Five studies (3 on NHL and 2 on MM) were included in this review article. The meta-analysis of data of 364 patients in the treatment group and 368 patients in the control group, indicated that the mobilization of ≥5/6×106 CD34+ cells/kg in 4 or less apheresis days was superior with plerixafor + G-CSF than with G-CSF alone (RR=2.59, 95% CI: 1.40 to 4.81; P<0.0001). Similarly, a greater proportion of patients in the treatment group exhibited the mobilization of ≥2×106 CD34+ cells/kg in 4 or less apheresis days (RR=1.46, 95% CI: 1.01 to 2.12; P=0.04). The addition of plerixafor significantly increased the total collection of CD34+ cells (random: MD=4.21; 95% CI: 2.85 to 5.57; P<0.00001). Meta-analysis indicated no significant increase in adverse events with the addition of plerixafor for HSC mobilization (RR=1.03, 95% CI: 0.99 to 1.06; P=0.16). On the whole, the findings of this study indicate that the addition of plerixafor to G-CSF leads to an increased HSC collection in a shorter period of time with no concomitant increase in adverse events. Further randomized controlled trials with a larger sample size evaluating short term efficacy, as well as long term survival would help to further strengthen the evidence on this subject.
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Affiliation(s)
- Xiaoyang Yang
- Department of Hematology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University and Haikou Municipal People's Hospital, Haikou, Hainan 570208, P.R. China
| | - Mengjie Wan
- Department of Hematology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University and Haikou Municipal People's Hospital, Haikou, Hainan 570208, P.R. China
| | - Feng Yu
- Department of Hematology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University and Haikou Municipal People's Hospital, Haikou, Hainan 570208, P.R. China
| | - Zhidong Wang
- Department of Hematology, People's Hospital of Peking University, Beijing 100044, P.R. China
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Irvine A, Jones A, Beattie P, Baron S, Browne F, Ashoor F, O'Neill L, Rosala-Hallas A, Sach T, Spowart C, Taams L, Walker C, Wan M, Webb N, Williamson P, Flohr C. The TREatment of severe Atopic eczema Trial (TREAT). Br J Dermatol 2018. [DOI: 10.1111/bjd.17052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Irvine AD, Jones AP, Beattie P, Baron S, Browne F, Ashoor F, O'Neill L, Rosala-Hallas A, Sach T, Spowart C, Taams L, Walker C, Wan M, Webb N, Williamson P, Flohr C. A randomized controlled trial protocol assessing the effectiveness, safety and cost-effectiveness of methotrexate vs. ciclosporin in the treatment of severe atopic eczema in children: the TREatment of severe Atopic eczema Trial (TREAT). Br J Dermatol 2018; 179:1297-1306. [PMID: 29727479 DOI: 10.1111/bjd.16717] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Oral systemic immunomodulatory medication is regularly used off-licence in children with severe atopic eczema. However, there is no firm evidence regarding the effectiveness, safety, cost-effectiveness and impact on quality of life from an adequately powered randomized controlled trial (RCT) using systemic medication in children. OBJECTIVES To assess whether there is a difference in the speed of onset, effectiveness, side-effect profile and reduction in flares post-treatment between ciclosporin (CyA) and methotrexate (MTX), and also the cost-effectiveness of the drugs. Treatment impact on quality of life will also be examined in addition to whether FLG genotype influences treatment response. In addition, the trial studies the immune-metabolic effects of CyA and MTX. METHODS Multicentre, parallel group, assessor-blind, pragmatic RCT of 36 weeks' duration with a 24-week follow-up period. In total, 102 children aged 2-16 years with moderate-to-severe atopic eczema, unresponsive to topical treatment will be randomized (1 : 1) to receive MTX (0·4 mg kg-1 per week) or CyA (4 mg kg-1 per day). RESULTS The trial has two primary outcomes: change from baseline to 12 weeks in Objective Severity Scoring of Atopic Dermatitis (o-SCORAD) and time to first significant flare following treatment cessation. CONCLUSIONS This trial addresses important therapeutic questions, highlighted in systematic reviews and treatment guidelines for atopic eczema. The trial design is pragmatic to reflect current clinical practice.
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Affiliation(s)
- A D Irvine
- Clinical Medicine, Trinity College Dublin, Dublin, Ireland.,Paediatric Dermatology, Our Lady's Children Hospital Crumlin, Dublin, Ireland.,National Children's Research Centre, Crumlin, Dublin, Ireland
| | - A P Jones
- Clinical Trials Research Centre, Department of Biostatistics, University of Liverpool, Liverpool, U.K
| | - P Beattie
- Royal Hospital for Children NHS Trust, Glasgow, U.K
| | - S Baron
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, U.K
| | - F Browne
- Paediatric Dermatology, Our Lady's Children Hospital Crumlin, Dublin, Ireland
| | - F Ashoor
- Clinical Trials Research Centre, Department of Biostatistics, University of Liverpool, Liverpool, U.K
| | - L O'Neill
- Biochemistry, Trinity College Dublin, Dublin, Ireland
| | - A Rosala-Hallas
- Clinical Trials Research Centre, Department of Biostatistics, University of Liverpool, Liverpool, U.K
| | - T Sach
- Health Economics Group, Norwich Medical School, University of East Anglia, Norwich, U.K
| | - C Spowart
- Clinical Trials Research Centre, Department of Biostatistics, University of Liverpool, Liverpool, U.K
| | - L Taams
- Centre for Molecular and Cellular Biology of Inflammation, King's College London, London, U.K
| | - C Walker
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, U.K
| | - M Wan
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, U.K
| | - N Webb
- Renal Research Laboratories, Manchester Royal Infirmary, Manchester, U.K
| | - P Williamson
- Clinical Trials Research Centre, Department of Biostatistics, University of Liverpool, Liverpool, U.K
| | - C Flohr
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, U.K
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- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, U.K
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22
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Liang X, Xie Q, Tan D, Ning Q, Niu J, Bai X, Chen S, Cheng J, Yu Y, Wang H, Xu M, Shi G, Wan M, Chen X, Tang H, Sheng J, Dou X, Shi J, Ren H, Wang M, Zhang H, Gao Z, Chen C, Ma H, Chen Y, Fan R, Sun J, Jia J, Hou J. Interpretation of liver stiffness measurement-based approach for the monitoring of hepatitis B patients with antiviral therapy: A 2-year prospective study. J Viral Hepat 2018; 25:296-305. [PMID: 29080299 DOI: 10.1111/jvh.12814] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/25/2017] [Indexed: 02/05/2023]
Abstract
Liver biopsy is not routinely performed in treated chronic hepatitis B. Liver stiffness measurement has been validated for noninvasive liver fibrosis assessment in pretreatment chronic hepatitis B but has not been assessed for fibrosis monitoring during antiviral therapy. Liver stiffness was systemically monitored by Fibroscan® every 6 months in a cohort of patients with hepatitis B receiving antiviral therapy and compared with liver biopsies at baseline and week 104. A total of 534 hepatitis B e antigen-positive treatment-naive patients receiving telbivudine-based therapy with qualified liver stiffness measurement at baseline and week 104 were analyzed, 164 of which had adequate paired liver biopsies. Liver stiffness decreased rapidly (-2.2 kPa/24 weeks) in parallel with alanine aminotransferase (ALT) from 8.6 (2.6-49.5) kPa at baseline to 6.1 (2.2-37.4) kPa at week 24. Interestingly, liver stiffness decreased slowly (-0.3 kPa/24 weeks) but continually from week 24 to week 104 (6.1 vs 5.3 kPa, P < .001) while ALT levels remained stable within the normal range. More importantly, liver stiffness declined significantly irrespective of baseline ALT levels and liver necroinflammation grades. From baseline to week 104, the proportion of patients with no or mild fibrosis (Ishak, 0-2) increased from 74.4% (122/164) to 93.9% (154/164). Multivariate analysis revealed that percentage decline of 52-week liver stiffness from baseline was independently associated with 104-week liver fibrosis regression (odds ratio, 3.742; P = .016). Early decline of 52-week liver stiffness from baseline may reflect the remission of both liver inflammation and fibrosis and was predictive of 104-week fibrosis regression in treated patients with chronic hepatitis B.
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Affiliation(s)
- X Liang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Q Xie
- Department of Infectious Diseases, Ruijin Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - D Tan
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, China
| | - Q Ning
- Department and Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Niu
- Department of Hepatology, The First Hospital, Jilin University, Changchun, China
| | - X Bai
- Department of Infectious Diseases, Tangdu Hospital, Xi'an, China
| | - S Chen
- Ji'nan Infectious Diseases Hospital, Ji'nan, China
| | - J Cheng
- Beijing Ditan Hospital, Beijing, China
| | - Y Yu
- Department of Infectious Diseases, First Hospital of Peking University, Beijing, China
| | - H Wang
- Hepatology Unit, Peking University People's Hospital, Beijing, China
| | - M Xu
- 8th People's Hospital, Guangzhou, China
| | - G Shi
- Department of Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - M Wan
- Department of Infectious Diseases, Changhai Hospital, Shanghai, China
| | - X Chen
- Beijing Youan Hospital, Beijing, China
| | - H Tang
- Department of Infectious Diseases, West China Hospital, Chengdu, China
| | - J Sheng
- Department of Infectious Diseases, Zhejiang University 1st Affiliated Hospital, Hangzhou, China
| | - X Dou
- Department of Infectious Diseases, Shengjing Hospital of China Medical University, Shenyang, China
| | - J Shi
- 6th People's Hospital, Hangzhou, China
| | - H Ren
- Department of Infectious Diseases, The second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - M Wang
- Department of Infectious Diseases, 81st PLA Hospital, Nanjing, China
| | - H Zhang
- 302nd PLA Hospital, Beijing, China
| | - Z Gao
- Department of Infectious Diseases, Sun Yat-Sen University 3rd Affiliated Hospital, Guangzhou, China
| | - C Chen
- Department of Infectious Diseases, 85th PLA Hospital, Shanghai, China
| | - H Ma
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Y Chen
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - R Fan
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J Sun
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Guangdong Provincial Research Center for Liver Fibrosis, Guangzhou, China
| | - J Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - J Hou
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Guangdong Provincial Research Center for Liver Fibrosis, Guangzhou, China
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23
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Hua W, Chen Q, Wan M, Lu J, Xiong L. The incidence of military training-related injuries in Chinese new recruits: a systematic review and meta-analysis. J ROY ARMY MED CORPS 2017; 164:309-313. [PMID: 29229645 DOI: 10.1136/jramc-2016-000710] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/20/2017] [Accepted: 09/23/2017] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Training-related injuries are the main reason for disability, long-term rehabilitation, functional impairment and premature discharge from military service. The aim of this study was to identify the incidence of injuries in the training of Chinese new recruits via a systematic review of the literature. METHOD A systematic review and meta-analysis was conducted to evaluate the combined incidence of military training-related injuries in Chinese new recruits. The electronic databases of full-text journals were searched, and the Loney criteria were used to assess the quality of eligible articles. Summary estimates were obtained using random-effects models. Subgroup analyses and publication bias tests were performed. RESULTS Fifty-five eligible articles representing 109 611 Chinese new recruits met the inclusion criteria, of which 21 253 recruits were clinically diagnosed with military training-related injuries. The combined incidence of military training-related injuries in Chinese new recruits was found to be 21.04%. CONCLUSIONS An increased incidence of training injuries was found in more recent years, underscoring the need for further research on the risk factors associated with their causation.
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Affiliation(s)
- Wei Hua
- Department of Military Health Service, Second Military Medical University, Shanghai, China
| | - Q Chen
- Department of Military Health Service, Second Military Medical University, Shanghai, China
| | - M Wan
- Department of Orthopedics, PLA 422nd Hospital, Zhanjiang, China
| | - J Lu
- Department of Training, Second Military Medical University, Shanghai, China
| | - L Xiong
- Department of Military Health Service, Second Military Medical University, Shanghai, China
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24
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Zhou Y, Zheng L, Li F, Wan M, Fan Y, Zhou X, Du W, Pi C, Cui D, Zhang B, Sun J, Zhou X. Bivalent Histone Codes on WNT5A during Odontogenic Differentiation. J Dent Res 2017; 97:99-107. [PMID: 28880717 DOI: 10.1177/0022034517728910] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Lineage-committed differentiation is an essential biological program during odontogenesis, which is tightly regulated by lineage-specific genes. Some of these genes are modified by colocalization of H3K4me3 and H3K27me3 marks at promoter regions in progenitors. These modifications, named "bivalent domains," maintain genes in a poised state and then resolve for later activation or repression during differentiation. Wnt5a has been reported to promote odontogenic differentiation in dental mesenchyme. However, relatively little is known about the epigenetic modulations on Wnt5a activation during tooth development. Here, we investigated the spatiotemporal patterns of H3K4me3 and H3K27me3 marks in developing mouse molars. Associated H3K4me3 methylases (mixed-lineage leukemia [MLL] complex) and H3K27me3 demethylases (JMJD3 and UTX) were dynamically expressed between early and late bell stage of human tooth germs and in cultured human dental papilla cells (hDPCs) during odontogenic induction. Poised WNT5A gene was marked by bivalent domains containing repressive marks (H3K27me3) and active marks (H3K4me3) on promoters. The bivalent domains tended to resolve during inducted differentiation, with removal of the H3K27me3 mark in a JMJD3-dependent manner. When JMJD3 was knocked down in cultured hDPCs, odontogenic differentiation was suppressed. The depletion of JMJD3 epigenetically repressed WNT5A activation by increased H3K27me3 marks. In addition, JMJD3 could physically interact with ASH2L, a component of the MLL complex, to form a coactivator complex, cooperatively modulating H3K4me3 marks on WNT5A promoters. Overall, our study reveals that transcription activities of WNT5A were epigenetically regulated by the negotiated balance between H3K27me3 and H3K4me3 marks and tightly mediated by JMJD3 and MLL coactivator complex, ultimately modulating odontogenic commitment during dental mesenchymal cell differentiation.
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Affiliation(s)
- Y Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Zheng
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - F Li
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - M Wan
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Fan
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Du
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - C Pi
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D Cui
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B Zhang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Sun
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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25
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Yang Y, Matthaeus WH, Parashar TN, Wu P, Wan M, Shi Y, Chen S, Roytershteyn V, Daughton W. Energy transfer channels and turbulence cascade in Vlasov-Maxwell turbulence. Phys Rev E 2017; 95:061201. [PMID: 28709288 DOI: 10.1103/physreve.95.061201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Indexed: 06/07/2023]
Abstract
Analysis of the Vlasov-Maxwell equations from the perspective of turbulence cascade clarifies the role of electromagnetic work, and reveals the importance of the pressure-strain relation in generating internal energy. Particle-in-cell simulation demonstrates the relative importance of the several energy exchange terms, indicating that the traceless pressure-strain interaction "Pi-D" is of particular importance for both electrons and protons. The Pi-D interaction and the second tensor invariants of the strain are highly localized in similar spatial regions, indicating that energy transfer occurs preferentially in coherent structures. The collisionless turbulence cascade may be fruitfully explored by study of these energy transfer channels, in addition to examining transfer across spatial scales.
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Affiliation(s)
- Yan Yang
- State Key Laboratory for Turbulence and Complex Systems, Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - W H Matthaeus
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - T N Parashar
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P Wu
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
- School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, United Kingdom
| | - M Wan
- Department of Mechanics and Aerospace Engineering, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
| | - Y Shi
- State Key Laboratory for Turbulence and Complex Systems, Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China
| | - S Chen
- State Key Laboratory for Turbulence and Complex Systems, Center for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China
- Department of Mechanics and Aerospace Engineering, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
| | | | - W Daughton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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26
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Candela B, Wan M, Tausk F, Pentland A, Ryan Wolf J. 356 Initial validation of novel clinical outcome measures in dermatology. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Li X, Gao J, Wang M, Zheng J, Li Y, Hui ES, Wan M, Yang J. Characterization of Extensive Microstructural Variations Associated with Punctate White Matter Lesions in Preterm Neonates. AJNR Am J Neuroradiol 2017; 38:1228-1234. [PMID: 28450434 DOI: 10.3174/ajnr.a5226] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 01/26/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE Punctate white matter lesions are common in preterm neonates. Neurodevelopmental outcomes of the neonates are related to the degree of extension. This study aimed to characterize the extent of microstructural variations for different punctate white matter lesion grades. MATERIALS AND METHODS Preterm neonates with punctate white matter lesions were divided into 3 grades (from mild to severe: grades I-III). DTI-derived fractional anisotropy, axial diffusivity, and radial diffusivity between patients with punctate white matter lesions and controls were compared with Tract-Based Spatial Statistics and tract-quantification methods. RESULTS Thirty-three preterm neonates with punctate white matter lesions and 33 matched controls were enrolled. There were 15, 9, and 9 patients, respectively, in grades I, II, and III. Punctate white matter lesions were mainly located in white matter adjacent to the lateral ventricles, especially regions lateral to the trigone, posterior horns, and centrum semiovale and/or corona radiata. Extensive microstructural changes were observed in neonates with grade III punctate white matter lesions, while no significant changes in DTI metrics were found for grades I and II. A pattern of increased axial diffusivity, increased radial diffusivity, and reduced/unchanged fractional anisotropy was found in regions adjacent to punctate white matter lesion sites seen on T1WI and T2WI. Unchanged axial diffusivity, increased radial diffusivity, and reduced/unchanged fractional anisotropy were observed in regions distant from punctate white matter lesion sites. CONCLUSIONS White matter microstructural variations were different across punctate white matter lesion grades. Extensive change patterns varied according to the distance to the lesion sites in neonates with severe punctate white matter lesions. These findings may help in determining the outcomes of punctate white matter lesions and selecting treatment strategies.
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Affiliation(s)
- X Li
- From the Department of Radiology (X.L., J.G., M. Wang, Y.L., J.Y.).,Department of Biomedical Engineering (X.L., M. Wan, J.Y.), the Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J Gao
- From the Department of Radiology (X.L., J.G., M. Wang, Y.L., J.Y.)
| | - M Wang
- From the Department of Radiology (X.L., J.G., M. Wang, Y.L., J.Y.)
| | - J Zheng
- Clinical Research Center (J.Z.), the First Affiliated Hospital, Xi'an, Shaanxi, China
| | - Y Li
- From the Department of Radiology (X.L., J.G., M. Wang, Y.L., J.Y.)
| | - E S Hui
- Department of Diagnostic Radiology (E.S.H.), University of Hong Kong, Hong Kong, China
| | - M Wan
- Department of Biomedical Engineering (X.L., M. Wan, J.Y.), the Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J Yang
- From the Department of Radiology (X.L., J.G., M. Wang, Y.L., J.Y.) .,Department of Biomedical Engineering (X.L., M. Wan, J.Y.), the Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
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28
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Yang X, Wan M, Liang T, Peng M, Chen F. Synthetic polyphosphate inhibits endogenous coagulation and platelet aggregation in vitro. Biomed Rep 2016; 6:57-62. [PMID: 28123708 DOI: 10.3892/br.2016.816] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/27/2016] [Indexed: 11/05/2022] Open
Abstract
Platelet-derived polyphosphate has previously been indicated to induce coagulation. However, industrially synthesized polyphosphate has been found to have different effects from those of the platelet-derived form. The present study investigated whether synthetic sodium polyphosphate inhibits coagulation using routine coagulation tests and thromboelastography. Synthetic polyphosphate was found to inhibit adenosine diphosphate-, epinephrine-, arachidonic acid-, ristocetin-, thrombin-, oxytocin- and pituitrin-induced platelet aggregation. The effects of synthetic polyphosphate in clotting inhibition were revealed by the analysis of clotting factor activity and platelet aggregation tests. Synthetic polyphosphate may inhibit platelet aggregation by reducing platelet calcium levels, as indicated by the results of flow cytometric analysis and high-throughput fluorescent screening. Furthermore, analysis of thromboxane (TX)B2 by ELISA indicated that synthetic polyphosphate reduces platelet aggregation by inhibiting the TXA2 signaling pathway. In conclusion, synthetic polyphosphate inhibits clotting factor activity and endogenous coagulation by reducing the levels of calcium ions and TXA2 to curb platelet aggregation.
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Affiliation(s)
- Xiaoyang Yang
- Department of Hematology, Haikou Municipal Hospital, Affiliated Haikou Hospital of Central South University, Haikou, Hainan 570208, P.R. China; Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Mengjie Wan
- Department of Hematology, Haikou Municipal Hospital, Affiliated Haikou Hospital of Central South University, Haikou, Hainan 570208, P.R. China
| | - Ting Liang
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Minyuan Peng
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Fangping Chen
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China; Department of Hematology, The Third Hospital of Xiangya Central South University, Changsha, Hunan 410013, P.R. China
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29
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Zhao M, Zhou Y, Zhu B, Wan M, Jiang T, Tan Q, Liu Y, Jiang J, Luo S, Tan Y, Wu H, Renauer P, Del Mar Ayala Gutiérrez M, Castillo Palma MJ, Ortega Castro R, Fernández-Roldán C, Raya E, Faria R, Carvalho C, Alarcón-Riquelme ME, Xiang Z, Chen J, Li F, Ling G, Zhao H, Liao X, Lin Y, Sawalha AH, Lu Q. IFI44L promoter methylation as a blood biomarker for systemic lupus erythematosus. Ann Rheum Dis 2016; 75:1998-2006. [PMID: 26787370 DOI: 10.1136/annrheumdis-2015-208410] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 12/11/2015] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Systemic lupus erythematosus (SLE) is a clinically heterogeneous disease with limited reliable diagnostic biomarkers. We investigated whether gene methylation could meet sensitivity and specificity criteria for a robust biomarker. METHODS IFI44L promoter methylation was examined using DNA samples from a discovery set including 377 patients with SLE, 358 healthy controls (HCs) and 353 patients with rheumatoid arthritis (RA). Two independent sets including 1144 patients with SLE, 1350 HCs, 429 patients with RA and 199 patients with primary Sjögren's syndrome (pSS) were used for validation. RESULTS Significant hypomethylation of two CpG sites within IFI44L promoter, Site1 (Chr1: 79 085 222) and Site2 (Chr1: 79 085 250; cg06872964), was identified in patients with SLE compared with HCs, patients with RA and patients with pSS. In a comparison between patients with SLE and HCs included in the first validation cohort, Site1 methylation had a sensitivity of 93.6% and a specificity of 96.8% at a cut-off methylation level of 75.5% and Site2 methylation had a sensitivity of 94.1% and a specificity of 98.2% at a cut-off methylation level of 25.5%. The IFI44L promoter methylation marker was also validated in an European-derived cohort. In addition, the methylation levels of Site1 and Site2 within IFI44L promoter were significantly lower in patients with SLE with renal damage than those without renal damage. Patients with SLE showed significantly increased methylation levels of Site1 and Site2 during remission compared with active stage. CONCLUSIONS The methylation level of IFI44L promoter can distinguish patients with SLE from healthy persons and other autoimmune diseases, and is a highly sensitive and specific diagnostic marker for SLE.
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Affiliation(s)
- Ming Zhao
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yin Zhou
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Bochen Zhu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Mengjie Wan
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Tingting Jiang
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Qiqun Tan
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yan Liu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Juqing Jiang
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Shuaihantian Luo
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yixin Tan
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Haijing Wu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Paul Renauer
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | - Concepción Fernández-Roldán
- Departament of Rheumatology, Unidad de Enfermedades Autoinmunes Sistémicas, Hospital Universitario San Cecilio, Granada, Spain
| | - Enrique Raya
- Departament of Rheumatology, Unidad de Enfermedades Autoinmunes Sistémicas, Hospital Universitario San Cecilio, Granada, Spain
| | - Raquel Faria
- Unidade de Imunologia Clínica/Centro Hospitalar do Porto, Porto, Portugal
| | - Claudia Carvalho
- Lab Imunogenetics & Autoimmu and NeuroScien, Unidade Multidisciplinar Invest Biomed, Inst Ciencias Biomed Abel Salazar/ Universidade do Porto, Porto, Portugal
| | - Marta E Alarcón-Riquelme
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA Centre for Genomics and Oncological Research (GENYO), Pfizer-University of Granada-Andalusian Regional Government, Health Sciences Technology Park, Granada, Spain
| | - Zhongyuan Xiang
- Department of Clinical Laboratory, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Jinwei Chen
- Department of Rheumatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Fen Li
- Department of Rheumatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Guanghui Ling
- Department of Rheumatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Hongjun Zhao
- Department of Rheumatology, Xiangya Hospital of Central South University, Changsha, China
| | - Xiangping Liao
- Department of Nephropathy and Rheumatology, Chenzhou No.1 People's Hospital, Chenzhou, China
| | - Youkun Lin
- Department of Dermatology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Amr H Sawalha
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Qianjin Lu
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, The Second Xiangya Hospital of Central South University, Changsha, China
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30
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Liu K, Huang J, Sun H, Wan M, Qi Y, Li H. Label propagation based evolutionary clustering for detecting overlapping and non-overlapping communities in dynamic networks. Knowl Based Syst 2015. [DOI: 10.1016/j.knosys.2015.08.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Wan M, Liu JR, Wu D, Chi XP, Ouyang XY. E-selectin expression induced by Porphyromonas gingivalis in human endothelial cells via nucleotide-binding oligomerization domain-like receptors and Toll-like receptors. Mol Oral Microbiol 2015; 30:399-410. [PMID: 25939768 DOI: 10.1111/omi.12102] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2015] [Indexed: 12/18/2022]
Abstract
Porphyromonas gingivalis, an important periodontal pathogen, has been proved to actively invade cells, induce endothelial cell activation, and promote development of atherosclerosis. Innate immune surveillance, which includes the activity of nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) and Toll-like receptors (TLRs), are essential for the control of microbial infections; however, the roles of receptor families in P. gingivalis infections remain unclear. Here, we examined the roles of NLRs and TLRs in endothelial cell activation caused by P. gingivalis. Live P. gingivalis and whole cell sonicates were used to stimulate endothelial cells, and both showed upregulation of E-selectin as well as NOD1, NOD2, and TLR2. In addition, silencing of these genes in endothelial cells infected with P. gingivalis led to a reduction in E-selectin expression. Porphyromonas gingivalis also induced nuclear factor-κB (NF-κB) and P38 mitogen-activated protein kinase (MAPK) activity in endothelial cells, whereas small interfering RNA targeting NOD1 significantly reduced these signals. Moreover, inhibition of either NOD2 or TLR2 inhibited NF-κB significantly, but had only a weak inhibitory effect on P38 MAPK signaling. Direct inhibition of NF-κB and P38 MAPK significantly attenuated E-selectin expression induced by P. gingivalis in endothelial cells. Taken together, these findings suggest that NOD1, NOD2, and TLR2 play important, non-redundant roles in endothelial cell activation following P. gingivalis infection.
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Affiliation(s)
- M Wan
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - J R Liu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - D Wu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China.,Department of Stomatology, Bijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - X P Chi
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China.,Department of VIP Dental Service, Peking University School and Hospital of Stomatology, Beijing, China
| | - X Y Ouyang
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
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32
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Oughton S, Matthaeus WH, Wan M, Osman KT. Anisotropy in solar wind plasma turbulence. Philos Trans A Math Phys Eng Sci 2015; 373:20140152. [PMID: 25848082 PMCID: PMC4394683 DOI: 10.1098/rsta.2014.0152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/04/2015] [Indexed: 06/01/2023]
Abstract
A review of spectral anisotropy and variance anisotropy for solar wind fluctuations is given, with the discussion covering inertial range and dissipation range scales. For the inertial range, theory, simulations and observations are more or less in accord, in that fluctuation energy is found to be primarily in modes with quasi-perpendicular wavevectors (relative to a suitably defined mean magnetic field), and also that most of the fluctuation energy is in the vector components transverse to the mean field. Energy transfer in the parallel direction and the energy levels in the parallel components are both relatively weak. In the dissipation range, observations indicate that variance anisotropy tends to decrease towards isotropic levels as the electron gyroradius is approached; spectral anisotropy results are mixed. Evidence for and against wave interpretations and turbulence interpretations of these features will be discussed. We also present new simulation results concerning evolution of variance anisotropy for different classes of initial conditions, each with typical background solar wind parameters.
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Affiliation(s)
- S Oughton
- Department of Mathematics, University of Waikato, Hamilton 3240, New Zealand
| | - W H Matthaeus
- Department of Physics and Astronomy, University of Delaware, DE 19716, USA
| | - M Wan
- Department of Physics and Astronomy, University of Delaware, DE 19716, USA
| | - K T Osman
- Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry CV4 7AL, UK
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33
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Wan M, Matthaeus WH, Roytershteyn V, Karimabadi H, Parashar T, Wu P, Shay M. Intermittent Dissipation and Heating in 3D Kinetic Plasma Turbulence. Phys Rev Lett 2015; 114:175002. [PMID: 25978241 DOI: 10.1103/physrevlett.114.175002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Indexed: 06/04/2023]
Abstract
High resolution, fully kinetic, three dimensional (3D) simulation of collisionless plasma turbulence shows the development of turbulence characterized by sheetlike current density structures spanning a range of scales. The nonlinear evolution is initialized with a long wavelength isotropic spectrum of fluctuations having polarizations transverse to an imposed mean magnetic field. We present evidence that these current sheet structures are sites for heating and dissipation, and that stronger currents signify higher dissipation rates. The analyses focus on quantities such as J·E, electron, and proton temperatures, and conditional averages of these quantities based on local electric current density. Evidently, kinetic scale plasma, like magnetohydrodynamics, becomes intermittent due to current sheet formation, leading to the expectation that heating and dissipation in astrophysical and space plasmas may be highly nonuniform. Comparison with previous results from 2D kinetic simulations, as well as high frequency solar wind observational data, are discussed.
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Affiliation(s)
- M Wan
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - W H Matthaeus
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | | | | | - T Parashar
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P Wu
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Shay
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
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Sun F, Wan M, Xu X, Gao B, Zhou Y, Sun J, Cheng L, Klein OD, Zhou X, Zheng L. Crosstalk between miR-34a and Notch Signaling Promotes Differentiation in Apical Papilla Stem Cells (SCAPs). J Dent Res 2014; 93:589-95. [PMID: 24710391 DOI: 10.1177/0022034514531146] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 03/19/2014] [Indexed: 02/05/2023] Open
Abstract
Stem cells from the apical papilla (SCAPs) are important for the formation and regeneration of root dentin. Here, we examined the expression of Notch signaling components in SCAPs and investigated crosstalk between microRNA miR-34aand Notch signaling during cell differentiation. We found that human SCAPs express NOTCH2, NOTCH3, JAG2, DLL3, and HES1, and we tested the relationship between Notch signaling and both cell differentiation and miR-34a expression. NOTCH activation in SCAPs inhibited cell differentiation and up-regulated the expression of miR-34a, whereas miR-34a inhibited Notch signaling in SCAPs by directly targeting the 3'UTR of NOTCH2 and HES1 mRNA and suppressing the expression of NOTCH2, N2ICD, and HES1. DSPP, RUNX2, OSX, and OCN expression was consequently up-regulated. Thus, Notch signaling in human SCAPs plays a vital role in maintenance of these cells. miR-34a interacts with Notch signaling and promotes both odontogenic and osteogenic differentiation of SCAPs.
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Affiliation(s)
- F Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - M Wan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 Program in Craniofacial and Mesenchymal Biology and Departments of Orofacial Sciences and Pediatrics, University of California, San Francisco, CA 94143, USA
| | - X Xu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - B Gao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - Y Zhou
- West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - J Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - L Cheng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - O D Klein
- Program in Craniofacial and Mesenchymal Biology and Departments of Orofacial Sciences and Pediatrics, University of California, San Francisco, CA 94143, USA
| | - X Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
| | - L Zheng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041 West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China, 610041
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Wan M, Liu J, Ouyang X. Nucleotide-binding oligomerization domain 1 regulates Porphyromonas gingivalis
-induced vascular cell adhesion molecule 1 and intercellular adhesion molecule 1 expression in endothelial cells through NF-κB pathway. J Periodontal Res 2014; 50:189-96. [PMID: 24862550 DOI: 10.1111/jre.12192] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2014] [Indexed: 12/18/2022]
Affiliation(s)
- M. Wan
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - J. Liu
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - X. Ouyang
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
- National Engineering Laboratory for Digital and Material Technology of Stomatology; Beijing China
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Pan L, Zheng W, Ye X, Chen L, Ke Y, Wan M, Tang W, Gao J, Zhang X. P0016 A novel approach of intrabeam intraoperative radiotherapy for nipple-sparing mastectomy with breast reconstruction. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wu P, Wan M, Matthaeus WH, Shay MA, Swisdak M. Von Kármán energy decay and heating of protons and electrons in a kinetic turbulent plasma. Phys Rev Lett 2013; 111:121105. [PMID: 24093244 DOI: 10.1103/physrevlett.111.121105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Indexed: 06/02/2023]
Abstract
Decay in time of undriven weakly collisional kinetic plasma turbulence in systems large compared to the ion kinetic scales is investigated using fully electromagnetic particle-in-cell simulations initiated with transverse flow and magnetic disturbances, constant density, and a strong guide field. The observed energy decay is consistent with the von Kármán hypothesis of similarity decay, in a formulation adapted to magnetohydrodyamics. Kinetic dissipation occurs at small scales, but the overall rate is apparently controlled by large scale dynamics. At small turbulence amplitudes the electrons are preferentially heated. At larger amplitudes proton heating is the dominant effect. In the solar wind and corona the protons are typically hotter, suggesting that these natural systems are in the large amplitude turbulence regime.
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Affiliation(s)
- P Wu
- Department of Physics and Astronomy, Bartol Research Institute, University of Delaware, Newark, Delaware 19716, USA
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Wang Y, Thongsawat S, Gane EJ, Liaw YF, Jia J, Hou J, Chan HLY, Papatheodoridis G, Wan M, Niu J, Bao W, Trylesinski A, Naoumov NV. Efficacy and safety of continuous 4-year telbivudine treatment in patients with chronic hepatitis B. J Viral Hepat 2013; 20:e37-46. [PMID: 23490388 PMCID: PMC3618368 DOI: 10.1111/jvh.12025] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 10/01/2012] [Indexed: 12/16/2022]
Abstract
In the phase-III GLOBE/015 studies, telbivudine demonstrated superior efficacy vs lamivudine during 2-year treatment in HBeAg-positive and HBeAg-negative chronic hepatitis B (CHB). After completion, 847 patients had an option to continue telbivudine treatment for further 2 years. A total of 596 (70%) of telbivudine-treated patients, who were serum HBV DNA positive or negative and without genotypic resistance to telbivudine at the end of the GLOBE/015 trials, were enrolled into a further 2-year extension study. A group of 502 patients completed 4 years of continuous telbivudine treatment and were included in the telbivudine per-protocol population. Amongst 293 HBeAg-positive patients, 76.2% had undetectable serum HBV DNA and 86.0% had normal serum ALT at the end of 4 years. Notably, the cumulative rate of HBeAg seroconversion was 53.2%. Amongst 209 HBeAg-negative patients, 86.4% had undetectable HBV DNA and 89.6% had normal serum ALT. In patients who had discontinued telbivudine treatment due to HBeAg seroconversion, the HBeAg response was durable in 82% of patients (median 111 weeks of off-treatment follow-up). The cumulative 4-year resistance rate was 10.6% for HBeAg-positive and 10.0% for HBeAg-negative patients. Most adverse events were mild or moderate in severity and transient. Renal function measured by estimated glomerular filtration rate (eGFR) increased by 14.9 mL/min/1.73 m(2) (16.6%) from baseline to 4 years (P < 0.0001). In conclusion, in HBeAg-positive and HBeAg-negative CHB patients without resistance after 2 years, two additional years of telbivudine treatment continued to provide effective viral suppression with a favourable safety profile. Moreover, telbivudine achieved 53% of HBeAg seroconversion in HBeAg-positive patients.
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Affiliation(s)
- Y Wang
- Institute of Infectious Diseases, Southwest Hospital, Third Military Medical UniversityChongqing, China
| | - S Thongsawat
- Department of Internal Medicine, Faculty of Medicine, Chiang Mai UniversityChiang Mai, Thailand
| | - E J Gane
- New Zealand Liver Unit, Auckland City HospitalAuckland, New Zealand
| | - Y-F Liaw
- Liver Research Unit, Chang Gung Memorial Hospital & UniversityTaipei, Taiwan
| | - J Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical UniversityBeijing, China
| | - J Hou
- Hepatology Unit and Department of Infectious Diseases, Nanfang HospitalGuangzhou, China
| | - H L Y Chan
- Medicine and Therapeutics, Chinese University of Hong KongHong Kong, China
| | - G Papatheodoridis
- Academic Department of Medicine, Hippokration General HospitalAthens, Greece
| | - M Wan
- Department of Infectious Diseases, ChangHai Hospital of the Second Military Medical UniversityShanghai, China
| | - J Niu
- Department of Hepatology, First hospital of Jilin UniversityJilin, China
| | - W Bao
- Novartis Pharma CorporationEast Hanover, NJ, USA
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Wan M, Matthaeus WH, Karimabadi H, Roytershteyn V, Shay M, Wu P, Daughton W, Loring B, Chapman SC. Intermittent dissipation at kinetic scales in collisionless plasma turbulence. Phys Rev Lett 2012; 109:195001. [PMID: 23215389 DOI: 10.1103/physrevlett.109.195001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Indexed: 06/01/2023]
Abstract
High resolution kinetic simulations of collisionless plasma driven by shear show the development of turbulence characterized by dynamic coherent sheetlike current density structures spanning a range of scales down to electron scales. We present evidence that these structures are sites for heating and dissipation, and that stronger current structures signify higher dissipation rates. Evidently, kinetic scale plasma, like magnetohydrodynamics, becomes intermittent due to current sheet formation, leading to the expectation that heating and dissipation in astrophysical and space plasmas may be highly nonuniform and patchy.
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Affiliation(s)
- M Wan
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
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Wan M, Zweizig S, Dablaing G, Zheng J, Velicescu M, Dubeau L. 3 distinct regions of chromosome-6 are targets of loss of heterozygosity in human ovarian carcinomas. Int J Oncol 2012; 5:1043-8. [PMID: 21559678 DOI: 10.3892/ijo.5.5.1043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We performed mapping studies of allelic deletions on chromosome 6 in 52 ovarian carcinomas using 20 polymorphic markers assigned to various regions of both chromosomal arms. Loss of heterozygosity was seen in 28 (55%) tumors. The allelic losses, however, did not involve the whole chromosome in 18 of those tumors, allowing further localization of the targeted chromosomal region(s). Three different chromosomal regions appeared involved based on the distribution of partial deletions, 2 on the long arm and one on the short arm. One of the 2 regions on the long arm was confined to band 6q27 whereas the other was between the Arg1 and estrogen receptor loci. The targeted region on the short arm was bounded by the D6S89 and D6S248 loci. These results suggest the presence of at least 3 different tumor suppressor genes important for the control of ovarian tumorigenesis on chromosome 6.
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Affiliation(s)
- M Wan
- KENNETH NORRIS JR COMPREHENS CANC CTR,DEPT PATHOL,LOS ANGELES,CA 90033. KENNETH NORRIS JR COMPREHENS CANC CTR,DEPT GYNECOL ONCOL,LOS ANGELES,CA 90033
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Zhang Z, Zheng J, Zhao Y, Li G, Batres Y, Luo M, Wan M, Ying S. Overexpression of activin A inhibits growth, induces apoptosis, and suppresses tumorigenicity in an androgen-sensitive human prostate cancer cell line LNCaP. Int J Oncol 2012; 11:727-36. [PMID: 21528267 DOI: 10.3892/ijo.11.4.727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The effects of overexpression of activin A in the androgen-sensitive human prostate cancer cell line LNCaP were studied. A full-length cDNA of activin beta A coding region was inserted into a eukaryotic expression vector and transfected into the LNCaP cells. Overexpression of activin BA significantly inhibited growth of this cell line. An increased death rate was also noted in these activin-overproducing cells, which was believed to be due to apoptosis as manifested by morphological change, DNA laddering, and FAGS analysis. The expression of bcl-2 was suppressed and the expression of c-myc was stimulated in these cells. In addition, the efficiency of soft agar colony formation and the tumorigenicity in the nude mice were suppressed for the activin producing LNCaP cells.
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Affiliation(s)
- Z Zhang
- UNIV SO CALIF,DEPT CELL & NEUROBIOL,SCH MED,LOS ANGELES,CA 90033. UNIV SO CALIF,DEPT PATHOL,SCH MED,LOS ANGELES,CA 90033
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Danila D, Anand A, Heller G, Wan M, Zehnder M, Khanin R, Schultz N, Fleisher M, Lilja H, Scher H. The Analytical Validation of Prostate Specific Mrna Detection in Whole Blood by Reverse Transcription-Polymerase Chain Reaction (RT-PCR) as a Prognostic Biomarker for Patients with Castration-Resistant Prostate Cancer (CRPC). Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32790-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Evidence for nonuniform heating in the solar wind plasma near current sheets dynamically generated by magnetohydrodynamic (MHD) turbulence is obtained using measurements from the ACE spacecraft. These coherent structures only constitute 19% of the data, but contribute 50% of the total plasma internal energy. Intermittent heating manifests as elevations in proton temperature near current sheets, resulting in regional heating and temperature enhancements extending over several hours. The number density of non-Gaussian structures is found to be proportional to the mean proton temperature and solar wind speed. These results suggest magnetofluid turbulence drives intermittent dissipation through a hierarchy of coherent structures, which collectively could be a significant source of coronal and solar wind heating.
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Affiliation(s)
- K T Osman
- Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry, CV4 7AL, United Kingdom.
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Osman KT, Wan M, Matthaeus WH, Weygand JM, Dasso S. Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data. Phys Rev Lett 2011; 107:165001. [PMID: 22107393 DOI: 10.1103/physrevlett.107.165001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Indexed: 05/31/2023]
Abstract
The first direct determination of the inertial range energy cascade rate, using an anisotropic form of Yaglom's law for magnetohydrodynamic turbulence, is obtained in the solar wind with multispacecraft measurements. The two-point mixed third-order structure functions of Elsässer fluctuations are integrated over a sphere in magnetic field-aligned coordinates, and the result is consistent with a linear scaling. Therefore, volume integrated heating and cascade rates are obtained that, unlike previous studies, make only limited assumptions about the underlying spectral geometry of solar wind turbulence. These results confirm the turbulent nature of magnetic and velocity field fluctuations in the low frequency limit, and could supply the energy necessary to account for the nonadiabatic heating of the solar wind.
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Affiliation(s)
- K T Osman
- Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Delaware 19716, USA.
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Wan M, Ghosh S. 12. 3-T MRI and DWI in prostate cancer imaging: a district general hospital perspective. Cancer Imaging 2011. [DOI: 10.1102/1470-7330.2011.9075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Zheng Y, Lai W, Wan M, Maibach HI. Expression of cathepsins in human skin photoaging. Skin Pharmacol Physiol 2010; 24:10-21. [PMID: 20588086 DOI: 10.1159/000314725] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Accepted: 04/27/2010] [Indexed: 11/19/2022]
Abstract
Cathepsins are involved in regulatory mechanisms in human skin, but their role in photoaged skin remains unknown. This study investigates the role of cathepsin B, D, K, and G in skin photoaging in vivo and in vitro. Cathepsin-induced changes in skin as a result of chronic UV irradiation were detected by immunohistochemistry methods. Protein cathepsin expressions in UVA-induced premature senescence in fibroblasts in vitro were detected by Western blot technique. Cathepsin mRNA expression in photoaged skin and fibroblasts was detected by real-time reverse transcription-polymerase chain reaction. Immunohistochemistry and Western blot show lower protein expression of cathepsin B, D, and K in photoaged skin and fibroblasts, while cathepsin G was higher. The mRNA expression of cathepsin B, D, and K of the photoaged skin in vivo decreased to 20 ± 0.5, 25 ± 1.6 and 22 ± 0.8%, while cathepsin G mRNA increased to 2.24 ± 0.09 times that of control. In photoaged fibroblasts, cathepsin B, D, and K mRNA was downregulated to 64 ± 2.9, 24 ± 2.1 and 9 ± 0.5% while cathepsin G mRNA was upregulated to 1.42 ± 0.06 times that of control fibroblasts. These experiments suggest that cathepsin B, D, K, and G may act as biomarkers in photoaged human skin.
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Affiliation(s)
- Y Zheng
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, #600 Tianhe Road, Guangzhou, Guangdong, PR China
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Abstract
The multifunctional protein Yin Yang 1 (YY1) plays an important role in epigenetic regulation of gene expression. YY1 is highly expressed in various types of cancers, including prostate cancer. Currently, the mechanism underlying the functional role of YY1 in prostate tumorigenesis remains unclear. In this report, we investigated the functional interplay between YY1 and androgen receptor (AR), and the effect of YY1 on AR-mediated transcription. We found that YY1 physically interacts with AR both in a cell-free system and in cultured cells. YY1 is required for the optimal transcriptional activity of AR in promoting the transcription of the prostate specific antigen (PSA) promoter. However, ectopic YY1 expression in LNCaP cells did not further enhance the reporter driven by the PSA promoter, suggesting an optimal level of YY1 is already established in prostate tumor cells. Consistently, YY1 depletion in LNCaP cells reduced endogenous PSA levels, but overexpressed YY1 did not significantly increase PSA expression. We also observed that YY1-AR interaction is essential to YY1-mediated transcription activity of AR and YY1 is a necessary component in the complex binding to the androgen response element (ARE). Thus, our study demonstrates that YY1 interacts with AR and regulates its transcriptional activity.
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Affiliation(s)
- Z Deng
- Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
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Hua X, Wan M, Su J, Frostegård A, Haeggström J, Frostegård J. Abstract: P649 OXIDIZED CARDIOLIPIN HAS PRO-INFLAMMATORY EFFECTS WHICH ARE INHIBITED BY ANNEXIN A5: IMPLICATIONS FOR CARDIOVASCULAR DISEASE AND CHRONIC INFLAMMATION. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70817-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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