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https://www.readbyqxmd.com/read/28041873/il-33-enhances-macrophage-m2-polarization-and-protects-mice-from-cvb3-induced-viral-myocarditis
#1
Chao Wang, Chunsheng Dong, Sidong Xiong
Viral myocarditis is the inflammation caused by myocardial virus infection, and the coxsackievirus group B3 virus (CVB3) is the most common pathogen. An efficient therapeutic agent against viral myocarditis is currently unavailable. IL-33, a new member of the IL-1 cytokine superfamily, exhibits potential immunotherapeutic effect against inflammatory and autoimmune diseases. However, the functional role of IL-33 in viral myocarditis has not been investigated. To examine the therapeutic role of IL-33 in viral myocarditis, an IL-33 overexpression plasmid (pDisplay-IL-33) and IL-33 knockdown plasmid (pLL3...
December 29, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28018858/coxsackievirus-b3-directly-induced-th17-cell-differentiation-by-inhibiting-nup98-expression-in-patients-with-acute-viral-myocarditis
#2
Qi Long, Yu-Hua Liao, Yu Xie, Wei Liang, Xiang Cheng, Jing Yuan, Miao Yu
Th17 cells play a key role in the progression of coxsackievirus B3 (CVB3)-induced acute viral myocarditis (AVMC). However, the direct effect of virus on Th17 cell differentiation is still unknown. Recently, nucleoporin (Nup) 98 has been proved to be associated with lymphocyte differentiation. Therefore, we investigated whether Nup98 mediated Th17 cell differentiation in AVMC. In our study, patients with AVMC and healthy controls were recruited. The results showed that CVB3 could enter into the CD4(+) T cells in AVMC patients and healthy controls...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27940223/mops-and-coxsackievirus-b3-stability
#3
Steven D Carson, Susan Hafenstein, Hyunwook Lee
Study of coxsackievirus B3 strain 28 (CVB3/28) stability using MOPS to improve buffering in the experimental medium revealed that MOPS (3-morpholinopropane-1-sulfonic acid) increased CVB3 stability and the effect was concentration dependent. Over the pH range 7.0-7.5, virus stability was affected by both pH and MOPS concentration. Computer-simulated molecular docking showed that MOPS can occupy the hydrophobic pocket in capsid protein VP1 where the sulfonic acid head group can form ionic and hydrogen bonds with Arg95 and Asn211 near the pocket opening...
January 15, 2017: Virology
https://www.readbyqxmd.com/read/27886550/v%C3%AE-1-%C3%AE-%C3%AE-t-early-cardiac-infiltrated-innate-population-dominantly-producing-il-4-protect-mice-against-cvb3-myocarditis-by-modulating-ifn%C3%AE-t-response
#4
Fangfang Wan, Kepeng Yan, Dan Xu, Qian Qian, Hui Liu, Min Li, Wei Xu
Viral myocarditis (VMC) is an inflammation of the myocardium closely associated with Coxsackievirus B3 (CVB3) infection. Vγ1(+)γδT cells, one of early cardiac infiltrated innate population, were reported to protect CVB3 myocarditis while the precise mechanism not fully addressed. To explore cytokine profiles and kinetics of Vγ1(+)γδT and mechanism of protection against VMC, flow cytometry was conducted on cardiac Vγ1 cells in C57BL/6 mice following CVB3 infection. The level of cardiac inflammation, transthoracic echocardiography and viral replication were evaluated after monoclonal antibody depletion of Vγ1γδT...
January 2017: Molecular Immunology
https://www.readbyqxmd.com/read/27793649/coxsackievirus-b3-induces-the-formation-of-autophagosomes-in-cardiac-fibroblasts-both-in-vitro-and-in-vivo
#5
Xia Zhai, Ying Qin, Yang Chen, Lexun Lin, Tianying Wang, Xiaoyan Zhong, Xiaoyu Wu, Sijia Chen, Jing Li, Yan Wang, Fengmin Zhang, Wenran Zhao, Zhaohua Zhong
Coxsackievirus group B (CVB) is one of the common pathogens that cause myocarditis and cardiomyopathy. Evidence has shown that CVB replication in cardiomyocytes is responsible for the damage and loss of cardiac muscle and the dysfunction of the heart. However, it remains largely undefined how CVB would directly impact cardiac fibroblasts, the most abundant cells in human heart. In this study, cardiac fibroblasts were isolated from Balb/c mice and infected with CVB type 3 (CVB3). Increased double-membraned, autophagosome-like vesicles in the CVB3-infected cardiac fibroblasts were observed with electron microscope...
October 25, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27792321/antiviral-triterpenes-from-the-twigs-and-leaves-of-lyonia-ovalifolia
#6
Xiao-Jing Lv, Yong Li, Shuang-Gang Ma, Jing Qu, Yun-Bao Liu, Yu-Huan Li, Dan Zhang, Li Li, Shi-Shan Yu
Eleven new 9,10-seco-cycloartan triterpene glycosides (1-11), seven new lanostane triterpene glycosides (12-18), and two new ursane triterpenoids (19-20) were isolated from the twigs and leaves of Lyonia ovalifolia. The structures of these compounds were elucidated by extensive MS and NMR spectroscopic analysis. The absolute configuration of compound 1a (the aglycone of 1) was established by X-ray crystallography, and that of C-24 in compounds 2, 7, and 12 was established by Mo2(OAc)4-induced electronic circular dichroism experiments...
November 23, 2016: Journal of Natural Products
https://www.readbyqxmd.com/read/27766098/il-9-inhibits-viral-replication-in-coxsackievirus-b3-induced-myocarditis
#7
Miao Yu, Qi Long, Huan-Huan Li, Wei Liang, Yu-Hua Liao, Jing Yuan, Xiang Cheng
Myocardial injuries in viral myocarditis (VMC) are caused by viral infection and related autoimmune disorders. Recent studies suggest that IL-9 mediated both antimicrobial immune and autoimmune responses in addition to allergic diseases. However, the role of IL-9 in viral infection and VMC remains controversial and uncertain. In this study, we infected Balb/c mice with Coxsackievirus B3 (CVB3), and found that IL-9 was enriched in the blood and hearts of VMC mice on days 5 and 7 after virus infection. Most of IL-9 was secreted by CD8(+) T cells on day 5 and CD4(+) T cells on day 7 in the myocardium...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27753702/green-tea-polyphenol-epigallocatechin-3-gallate-alleviated-coxsackievirus-b3-induced-myocarditis-through-inhibiting-viral-replication-but-not-through-inhibiting-inflammatory-responses
#8
Xiran He, Bo Gao, Lei Zhou, Sidong Xiong
Viral myocarditis, which is mainly caused by coxsackievirus B3 (CVB3), affects about 5%-20% of the world population and still lacks efficient treatments. Green tea, a tonic and healthful beverage that was originated in ancient China, has been receiving considerable attention for its protective effect on cardiovascular diseases in recent years. In the present investigation, we aimed to explore the effect of green tea polyphenol epigallocatechin-3-gallate (EGCG) on CVB3-induced myocarditis and its underlying mechanism...
January 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/27750147/synthesis-and-evaluation-of-halogenated-12n-sulfonyl-matrinic-butanes-as-potential-anti-coxsackievirus-agents
#9
Xin-Yue Cheng, Yu-Huan Li, Sheng Tang, Xin Zhang, Yan-Xiang Wang, Sheng-Gang Wang, Jian-Dong Jiang, Ying-Hong Li, Dan-Qing Song
Twenty-eight new 12N-benzenesulfonyl matrinic butane and halogenated 12N-sulfonyl matrinic butane/ethane derivatives were designed, synthesized and evaluated for their anti-coxsakievirus activities against CVB3 taking compound 1 as the lead. SAR analysis indicated the introduction of a fluoro atom on the 1'-position might be helpful for keeping potency. Among them, compound 8a exhibited potential activities against all CVBs with IC50 ranging from 0.69 to 5.14 μM, suggesting a broad-spectrum anti-coxsackievirus B feature...
September 30, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27737525/cinnamaldehyde-derivatives-inhibited-coxsackievirus-b3-induced-viral-myocarditis
#10
Xiao-Qiang Li, Xiao-Xiao Liu, Xue-Ying Wang, Yan-Hua Xie, Qian Yang, Xin-Xin Liu, Yuan-Yuan Ding, Wei Cao, Si-Wang Wang
The chemical property of cinnamaldehyde is unstable in vivo, although early experiments have shown its obvious therapeutic effects on viral myocarditis (VMC). To overcome this problem, we used cinnamaldehyde as a leading compound to synthesize derivatives. Five derivatives of cinnamaldehyde were synthesized: 4-methylcinnamaldehyde (1), 4-chlorocinnamaldehyde (2), 4-methoxycinnamaldehyde (3), α-bromo-4-methylcinnamaldehyde (4), and α-bromo-4-chlorocinnamaldehyde (5). Neonatal rat cardiomyocytes and HeLa cells infected by coxsackievirus B3 (CVB3) were used to evaluate their antiviral and cytotoxic effects...
October 17, 2016: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/27724948/valproic-acid-ameliorates-coxsackievirus-b3-induced-viral-myocarditis-by-modulating-th17-treg-imbalance
#11
Haibin Jin, Xiaoming Guo
BACKGROUND: Viral myocarditis, which is often caused by coxsackievirus B3 (CVB3), is a serious clinical disorder characterized by excessive myocardial inflammation. Valproic acid (VPA) is described as a histone deacetylase inhibitor that has anti-inflammatory effects in several inflammatory diseases. However, the role and the detailed mechanism of VPA in viral myocarditis remain unclear. METHODS: Experimental CVB3-induced myocarditis was induced in mice by intraperitoneally (i...
October 10, 2016: Virology Journal
https://www.readbyqxmd.com/read/27698715/microarray-analysis-reveals-altered-circulating-microrna-expression-in-mice-infected-with-coxsackievirus-b3
#12
Chaoyu Sun, Lei Tong, Wenran Zhao, Yan Wang, Yuan Meng, Lexun Lin, Bingchen Liu, Yujia Zhai, Zhaohua Zhong, Xueqi Li
Coxsackievirus B3 (CVB3) is a common causative agent in the development of inflammatory cardiomyopathy. However, whether the expression of peripheral blood microRNAs (miRNAs) is altered in this process is unknown. The present study investigated changes to miRNA expression in the peripheral blood of CVB3-infected mice. Utilizing miRNA microarray technology, differential miRNA expression was examined between normal and CVB3-infected mice. The present results suggest that specific miRNAs were differentially expressed in the peripheral blood of mice infected with CVB3, varying with infection duration...
October 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27693786/melittin-ameliorates-cvb3-induced-myocarditis-via-activation-of-the-hdac2-mediated-gsk-3%C3%AE-nrf2-are-signaling-pathway
#13
Tuanjie Wang, Jian Zhang, Aiju Xiao, Weiqing Liu, Yun Shang, Jindou An
Viral myocarditis (VMC) is characterized as an inflammatory process of the myocardium and can be fatal in infants and children. Melittin is a major polypeptide in honey bee venom that has been traditionally used against inflammation. However, its effect on VMC and the underlying molecular mechanism has not been reported. In this study, BALB/c mice were intraperitoneally injected with CVB3 to build a VMC model and treated with melittin. The results showed that melittin increased the mice's body weight and inhibited CVB3 replication...
September 28, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27584568/janus-effects-of-adar1-on-cvb3-induced-viral-myocarditis-at-different-infection-stages
#14
Ning Dong, Chunsheng Dong, Sidong Xiong
BACKGROUND: Coxsackievirus (CVB3) infection is the most common cause of viral myocarditis (VMC) characterized by viral infection and myocardial inflammation. ADAR1, the interferon (IFN)-inducible adenosine deaminase acting on RNA, has been reported to be functional in various viruses. Recent studies have demonstrated that ADAR1 holds an antiviral role or promotes viral replication depending on virus type. OBJECTIVES: This study aims to investigate whether or not ADAR1 affects CVB3-induced VMC...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27580335/detection-and-identification-of-coxsackievirus-b3-from-sera-of-an-indonesian-patient-with-undifferentiated-febrile-illness
#15
Ageng Wiyatno, Ungke Antonjaya, Chairin Nisa Ma'roef, Silvita Fitri Riswari, Hofiya Djauhari, I Made Artika, Corina Monagin, Bradley S Schneider, Khin Saw Myint, Bachti Alisjahbana, Dodi Safari, Herman Kosasih
INTRODUCTION: Coxsackievirus B3 (CVB3) virus has been implicated as the causative agent of various outbreaks of clinical disease, including hand, foot, and mouth diseases, aseptic meningitis, acute myocarditis, and inflammatory cardiomyopathy. METHODOLOGY: Two hundred and nine undiagnosed cryopreserved specimens obtained from factory workers in Bandung, Indonesia, who displayed symptoms of acute febrile illness were gathered. Total RNA was isolated from serum and tested by conventional polymerase chain reaction (PCR) using Enterovirus genus-level primers and confirmed by sequencing...
August 31, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/27566306/a-new-monoclonal-antibody-cox-mab-31a2-detects-vp1-protein-of-coxsackievirus-b3-with-high-sensitivity-and-specificity
#16
Nicole Ettischer-Schmid, Andrea Normann, Martina Sauter, Lisa Kraft, Hubert Kalbacher, Reinhard Kandolf, Bertram Flehmig, Karin Klingel
Human enteroviruses, e.g. coxsackieviruses, induce a variety of severe acute and chronic forms of disease, including myocarditis, meningitis and diabetes mellitus type 1. To visualize enterovirus infection with a diagnostic intent, many studies have applied a commercially available antibody (anti-CVB5 VP1, clone 5-D8/1, Dako, Hamburg, Germany) that identifies VP1 of different enteroviral serotypes. Many antibodies, however, have been found to bind non-specifically to proteins of cardiomyocytes and in the interstitial space, resulting in non-specific staining in immunohistochemistry...
November 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27558433/fructus-amomi-cardamomi-extract-inhibit-coxsackievirus-b3-induced-myocarditis-in-murine-myocarditis-model
#17
Yun-Gyeong Lee, Jung-Ho Park, Eun-Seok Jeon, Jin-Hee Kim, Byung-Kwan Lim
Coxsackievirus B3 (CVB3) is the main cause of acute myocarditis and dilated cardiomyopathy. Plant extracts are considered as useful materials to develop new antiviral drugs. We had previously selected candidate plant extracts, which showed anti-inflammatory effects. We examined the antiviral effects by using a HeLa cell survival assay. Among these extracts, we chose the Amomi Cardamomi (Amomi) extract, which showed strong antiviral effect and preserved cell survival in CVB3 infection. We investigated the mechanisms underlying the ability of Amomi extract to inhibit CVB3 infection and replication...
November 28, 2016: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27472894/dual-roles-of-calpain-in-facilitating-coxsackievirus-b3-replication-and-prompting-inflammation-in-acute-myocarditis
#18
Minghui Li, Yangang Su, Yong Yu, Ying Yu, Xinggang Wang, Yunzeng Zou, Junbo Ge, Ruizhen Chen
BACKGROUND: Viral myocarditis (VMC) treatment has long been lacking of effective methods. Our former studies indicated roles of calpain in VMC pathogenesis. This study aimed at verifying the potential of calpain in Coxsackievirus B3 (CVB3)-induced myocarditis treatment. METHODS: A transgenic mouse overexpressing the endogenous calpain inhibitor, calpastatin, was introduced in the study. VMC mouse model was established via intraperitoneal injection of CVB3 in transgenic and wild mouse respectively...
October 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27390781/illuminating-the-sites-of-enterovirus-replication-in-living-cells-by-using-a-split-gfp-tagged-viral-protein
#19
H M van der Schaar, C E Melia, J A C van Bruggen, J R P M Strating, M E D van Geenen, A J Koster, M Bárcena, F J M van Kuppeveld
Like all other positive-strand RNA viruses, enteroviruses generate new organelles (replication organelles [ROs]) with a unique protein and lipid composition on which they multiply their viral genome. Suitable tools for live-cell imaging of enterovirus ROs are currently unavailable, as recombinant enteroviruses that carry genes that encode RO-anchored viral proteins tagged with fluorescent reporters have not been reported thus far. To overcome this limitation, we used a split green fluorescent protein (split-GFP) system, comprising a large fragment [strands 1 to 10; GFP(S1-10)] and a small fragment [strand 11; GFP(S11)] of only 16 residues...
July 2016: MSphere
https://www.readbyqxmd.com/read/27284347/effect-of-amp-activated-protein-kinase-activation-on-cardiac-fibroblast-proliferation-induced-by-coxsackievirus-b3
#20
Shengyang Jiang, Shunli Tian, Xueming Wu, Yijia Tao, Donglin Jiang
Excessive fibroblast proliferation and collagen production are the major pathogenic mechanisms in the progression of viral myocarditis, which is most frequently associated with infection by coxsackievirus B3 (CVB3). AMP-activated protein kinase (AMPK) has been confirmed to be involved in the progression of myocardial remodeling. However, it remains unclear whether AMPK has an effect on CVB3-induced cardiac fibroblast proliferation. In the present study, the effects of AMPK on cardiac fibroblast proliferation and collagen secretion induced by CVB3 were investigated...
June 2016: Experimental and Therapeutic Medicine
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