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Viral myocarditis

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https://www.readbyqxmd.com/read/28402006/virus-myocarditis-in-a-1-month-old-boy-presenting-as-two-types-of-paroxysmal-supraventricular-tachycardia
#1
Shuhei Fujita, Takeshi Futatani, Tatsuya Kubo, Masae Itamochi, Yusuke Yachi, Hidenori Iwasaki, Ayako Shimao, Shihomi Ina, Hiroyuki Higashiyama, Noboru Igarashi, Kiyoshi Hatasaki
Herein we describe the case of a 1-month-old boy with acute viral myocarditis, who presented with two kinds of paroxysmal supraventricular tachycardia, and who was cured after medical treatment. He was brought to the emergency room with poor feeding due to fever. On the third day of hospitalization, a narrow QRS tachycardia (180-200 beats/min) was detected. Echocardiography showed a high echoic area at the atrial septum around the atrioventricular node. The patient was clinically diagnosed with acute myocarditis...
April 12, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28384999/pathogenesis-of-coxsackievirus-b2-in-mice-characterisation-of-clinical-isolates-of-the-coxsackievirus-b2-from-patients-with-myocarditis-and-aseptic-meningitis-in-korea
#2
JiYoung Hong, BungHak Kang, SangGu Yeo, Youngmee Jee, Jae-Hak Park
Group B coxsackieviruses (CVBs) are a group of common human pathogens causing various clinical symptoms. Although the virology of CVB is well known, there is limited information on viral pathogenesis and the relationship between clinical symptoms and viral phenotype, particularly for CVB type 2 (CVB2). In this study, two CVB2 strains were isolated: CB2/04/279 from a stool of an acute myocarditis patient with heart failure; and CB2/04/243 from an aseptic meningitis patient in 2004 in Korea. A high degree of homology was observed between the CB2/04/279 and CB2/04/243 full genome sequences...
April 6, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28359509/autosomal-recessive-cardiomyopathy-presenting-as-acute-myocarditis
#3
Serkan Belkaya, Amy R Kontorovich, Minji Byun, Sonia Mulero-Navarro, Fanny Bajolle, Aurelie Cobat, Rebecca Josowitz, Yuval Itan, Raphaelle Quint, Lazaro Lorenzo, Soraya Boucherit, Cecile Stoven, Sylvie Di Filippo, Laurent Abel, Shen-Ying Zhang, Damien Bonnet, Bruce D Gelb, Jean-Laurent Casanova
BACKGROUND: Myocarditis is inflammation of the heart muscle that can follow various viral infections. Why children only rarely develop life-threatening acute viral myocarditis (AVM), given that the causal viral infections are common, is unknown. Genetic lesions might underlie such susceptibilities. Mouse genetic studies demonstrated that interferon (IFN)-α/β immunity defects increased susceptibility to virus-induced myocarditis. Moreover, variations in human TLR3, a potent inducer of IFNs, were proposed to underlie AVM...
April 4, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28352641/cardiac-function-remains-impaired-despite-reversible-cardiac-remodeling-after-acute-experimental-viral-myocarditis
#4
Peter Moritz Becher, Frauke Gotzhein, Karin Klingel, Felicitas Escher, Stefan Blankenberg, Dirk Westermann, Diana Lindner
Background. Infection with Coxsackievirus B3 induces myocarditis. We aimed to compare the acute and chronic phases of viral myocarditis to identify the immediate effects of cardiac inflammation as well as the long-term effects after resolved inflammation on cardiac fibrosis and consequently on cardiac function. Material and Methods. We infected C57BL/6J mice with Coxsackievirus B3 and determined the hemodynamic function 7 as well as 28 days after infection. Subsequently, we analyzed viral burden and viral replication in the cardiac tissue as well as the expression of cytokines and matrix proteins...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28352303/paediatric-virology-a-rapidly-increasing-educational-challenge
#5
Ioannis N Mammas, Maria Theodoridou, Anna Kramvis, Prakash Thiagarajan, Sharryn Gardner, Georgia Papaioannou, Angeliki Melidou, Maria Koutsaki, Georgia Kostagianni, Vassilis Achtsidis, Chryssie Koutsaftiki, Marcos Calachanis, Apostolos Zaravinos, Anne Greenough, Demetrios A Spandidos
The '2nd Workshop on Paediatric Virology', which took place on Saturday the 8th of October 2016 in Athens, Greece, provided an overview on recent views and advances on Paediatric Virology. Emphasis was given to HIV-1 management in Greece, a country under continuous financial crisis, hepatitis B vaccination in Africa, treatment options for hepatitis C virus in childhood, Zika virus in pregnancy and infancy, the burden of influenza on childhood, hand-foot-mouth disease and myocarditis associated with Coxsackie viruses...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28341822/berberine-restricts-coxsackievirus-b-type-3-replication-via-inhibition-of-c-jun-n-terminal-kinase-jnk-and-p38-mapk-activation-in-vitro
#6
Qian Dai, Di Zhang, Hua Yu, Wei Xie, Rong Xin, Lei Wang, Xiaohui Xu, Xiaomei He, Junzhi Xiong, Halei Sheng, Le Zhang, Kebin Zhang, Xiaomei Hu
BACKGROUND At present, the treatment of coxsackievirus-induced myocarditis remains difficult. Berberine (BBR), an isoquinoline alkaloid isolated from traditional medicine herbs, exhibits significant anti-viral efficacy against various viruses. However, the underlying mechanism by which BBR controls CVB3 infection has not yet been reported. The purpose of this study was to investigate the anti-viral efficacy of BBR against CVB3 infection and its mechanism. MATERIAL AND METHODS In our experiments, the protein levels of VP1 and MAPKs signal pathway were measured by Western blot...
March 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28278207/pa28-modulates-antigen-processing-and-viral-replication-during-coxsackievirus-b3-infection
#7
Dorota Respondek, Martin Voss, Ina Kühlewindt, Karin Klingel, Elke Krüger, Antje Beling
The function of the proteasome is modulated at the level of subunit expression and by association with its regulatory complexes. During coxsackievirus B3 (CVB3) myocarditis, IFN-induced formation of immunoproteasomes (ip) is known to be critical for regulating immune modulating molecules. The function of the IFN-γ-inducible proteasome regulator subunits PA28 α and β, however, in this context was unknown. During viral myocarditis, we found an increased abundance of PA28β subunits in heart tissue. PA28α/β exists in PA28-20S-PA28 and PA700-20S-PA28 hybrid proteasome complexes in cells both with either predominant ip and standard proteasome (sp) expression...
2017: PloS One
https://www.readbyqxmd.com/read/28266999/combination-of-panaxadiol-and-panaxatriol-type-saponins-and-ophioponins-from-shenmai-formula-attenuates-lipopolysaccharide-induced-inflammatory-injury-in-cardiac-microvascular-endothelial-cells-by-blocking-nf-kappa-b-pathway
#8
Jinqiang Zhu, Yubin Liang, Shaoqian Yue, Guanwei Fan, Han Zhang, Meng Zhang
Vascular inflammatory injury leads to vascular endothelial dysfunction, thereby resulting in a variety of cardiovascular diseases (CVDs). Thus, attenuating vascular inflammatory injury has great significance for the prevention and treatment of CVDs. In China, Shenmai formula, a well-known ancient Chinese prescription, has been widely used to treat CVDs, such as coronary atherosclerosis and viral myocarditis. In vivo study has demonstrated that the optimal combination of 3 major active components from Shenmai formula, panaxadiol and panaxatriol type saponins and ophioponins, in a ratio of 1:2:2 might exert significant cardioprotective effects and anti-inflammatory activities...
March 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28264039/in-vivo-t2-weighted-mri-visualizes-cardiac-lesions-in-murine-models-of-acute-and-chronic-viral-myocarditis
#9
Xavier Helluy, Martina Sauter, Yu-Xiang Ye, Gunthard Lykowsky, Jakob Kreutner, Ali Yilmaz, Roland Jahns, Valerie Boivin, Reinhard Kandolf, Peter M Jakob, Karl-Heinz Hiller, Karin Klingel
OBJECTIVE: Acute and chronic forms of myocarditis are mainly induced by virus infections. As a consequence of myocardial damage and inflammation dilated cardiomyopathy and chronic heart failure may develop. The gold standard for the diagnosis of myocarditis is endomyocardial biopsies which are required to determine the etiopathogenesis of cardiac inflammatory processes. However, new non-invasive MRI techniques hold great potential in visualizing cardiac non-ischemic inflammatory lesions at high spatial resolution, which could improve the investigation of the pathophysiology of viral myocarditis...
2017: PloS One
https://www.readbyqxmd.com/read/28247213/microrna-20b-suppresses-the-expression-of-zfp-148-in-viral-myocarditis
#10
Hong-Fei Xu, Xiang-Ting Gao, Jun-Yi Lin, Xue-Hua Xu, Jun Hu, Yu-Jie Ding, Shao-Hua Zhu
Viral myocarditis is a common cardiovascular disease, which seriously endangers the health of people and even leads to sudden unexpected death. MicroRNAs play very important roles in various physical and pathological processes including cardiogenesis and heart diseases. In recent years, miR-20b has been implicated in various diseases such as breast cancer, gastric cancer, hepatocellular carcinoma, cardiovascular diseases. However, the function of miR-20b in the pathological progress of viral myocarditis has not been reported...
February 28, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28207428/il-37-ameliorates-coxsackievirus-b3-induced-viral-myocarditis-by-modulating-the-th17-treg-immune-response
#11
Bang An, Xuefei Liu, Ge Li, Haitao Yuan
Myocarditis is a heterogeneous group of disorders defined by inflammation of the heart muscle with an excessively activated immune response. Numerous interventions have been investigated for the treatment of myocarditis while success is limited. Interleukin-37 (IL-37), a novel member of the IL-1 cytokine family, is a natural inhibitor of innate immunity associated with autoimmune diseases. However, the modulatory effect of IL-37 in myocarditis is unknown. In this study, we investigated the immunological regulation of IL-37 in the coxsackievirus B3-induced model of murine viral myocarditis...
February 14, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28198193/association-between-dehydration-and-fever-during-the-first-week-of-life
#12
Ariane Boutin, Ana Carceller, Marie Pier Desjardins, Marisol Sanchez, Jocelyn Gravel
BACKGROUND: Trying to differentiate serious bacterial infection (SBI) from a self-limiting illness in febrile infants seen in the pediatric emergency department (PED) is a significant challenge. The aim of the study was to determine the prevalence of dehydration and its relationship to SBI in febrile full-term newborns under 1 week of age seen in a PED. METHODS: A retrospective observational study was carried out on all children younger than 8 days of age with fever who presented to a single, tertiary care, PED from January 2009 to April 2014...
February 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28197102/right-cervical-vagotomy-aggravates-viral-myocarditis-in-mice-via-the-cholinergic-anti-inflammatory-pathway
#13
Ge Li-Sha, Chen Xing-Xing, Wu Lian-Pin, Zhou De-Pu, Li Xiao-Wei, Lin Jia-Feng, Li Yue-Chun
The autonomic nervous system dysfunction with increased sympathetic activity and withdrawal of vagal activity may play an important role in the pathogenesis of viral myocarditis. The vagus nerve can modulate the immune response and control inflammation through a 'cholinergic anti-inflammatory pathway' dependent on the α7-nicotinic acetylcholine receptor (α7nAChR). Although the role of β-adrenergic stimulation on viral myocarditis has been investigated in our pervious studies, the direct effect of vagal tone in this setting has not been yet studied...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28196967/coxsackie-myocarditis-and-hepatitis-with-reactivated-epstein-bar-virus-ebv-a-case-report
#14
Varunsiri Atti, Nathan M Anderson, Mathew B Day
BACKGROUND Myocarditis, defined as inflammation of myocardial tissue of the heart, is an uncommon cardiac presentation and is due to a variety of causes. It affects 1% of the US population, 50% of which is caused by coxsackie B virus. Cardiac tissue is the prime target, and destruction of myocardium results in cardiac failure with fluid overload. CASE REPORT Our patient was a 57-year-old woman with fever, headache, neck pain, and generalized malaise. Her white blood cell count was 13×10³ cells/mm³. Interestingly, lumbar puncture ruled out meningitis...
February 15, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28196283/detection-of-human-parvovirus-b19-dna-in-22-of-1-815-cutaneous-biopsies-of-a-wide-variety-of-dermatologic-conditions-suggests-viral-persistence-after-primary-infection-and-casts-doubts-on-its-pathogenic-significance
#15
C Santonja, A Santos-Briz, G Palmedo, H Kutzner, L Requena
BACKGROUND: Human parvovirus B19 (B19V) has been associated with a number of dermatologic and systemic conditions, including myocarditis and autoimmune syndromes. OBJECTIVES: To determine the frequency of B19V deoxyribonucleic acid (DNA) detection in a large dermatopathology practice, and to characterize the histopathologic patterns involved. METHODS: We selected for polymerase chain reaction (PCR) detection of B19V a total of 1,815 skin biopsies pertaining to entities allegedly related to Parvovirus B19, as well as cases suspected clinically of representing paraviral exanthemas...
February 14, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28186704/mesenchymal-stromal-cells-modulate-monocytes-trafficking-in-coxsackievirus-b3-induced-myocarditis
#16
Kapka Miteva, Kathleen Pappritz, Muhammad El-Shafeey, Fengquan Dong, Jochen Ringe, Carsten Tschöpe, Sophie Van Linthout
Mesenchymal stromal cell (MSC) application in Coxsackievirus B3 (CVB3)-induced myocarditis reduces myocardial inflammation and fibrosis, exerts prominent extra-cardiac immunomodulation, and improves heart function. Although the abovementioned findings demonstrate the benefit of MSC application, the mechanism of the MSC immunomodulatory effects leading to a final cardioprotective outcome in viral myocarditis remains poorly understood. Monocytes are known to be a trigger of myocardial tissue inflammation. The present study aims at investigating the direct effect of MSC on the mobilization and trafficking of monocytes to the heart in CVB3-induced myocarditis...
April 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28176833/transmissible-endoplasmic-reticulum-stress-from-myocardiocytes-to-macrophages-is-pivotal-for-the-pathogenesis-of-cvb3-induced-viral-myocarditis
#17
Hui Zhang, Yan Yue, Tianle Sun, Xuejie Wu, Sidong Xiong
Infiltrating macrophages have been proven as a pivotal pathological inflammatory cell subset in coxsackievirus B3 (CVB3) induced viral myocarditis. However, the mechanisms underlying the initiation and promotion of macrophage pro-inflammatory responses are still blur. We previously reported that cardiac ER stress contributed to CVB3-induced myocarditis by augmenting inflammation. In this study, we focused on the influence of ER stress on the macrophage inflammatory responses in the viral myocarditis. We found that ER stress was robustly induced in the cardiac infiltrating macrophages from CVB3-infected mice, and robustly facilitated the production of pro-inflammatory cytokines (IL-6, IL-12, MCP-1 and IP-10)...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28161113/-myocarditis
#18
G Hékimian, A Combes
Acute myocarditis must be considered in patients with recent onset of cardiac failure or arrhythmia. Fulminant myocarditis is a distinct entity characterized by sudden onset of severe congestive heart failure or cardiogenic shock, usually following a flu-like illness, parvovirus B19, human herpesvirus 6, coxsackie virus and adenovirus being the most frequently viruses responsible for the disease. In this setting, early recognition of patients rapidly progressing to refractory cardiac failure and their immediate transfer to a medical-surgical center experienced in mechanical circulatory support is warranted...
February 1, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28148910/intein-mediated-backbone-cyclization-of-vp1-protein-enhanced-protection-of-cvb3-induced-viral-myocarditis
#19
Xingmei Qi, Sidong Xiong
CVB3 is a common human pathogen to be highly lethal to newborns and causes viral myocarditis and pancreatitis in adults. However, there is no vaccine available for clinical use. CVB3 capsid protein VP1 is an immunodominant structural protein, containing several B- and T-cell epitopes. However, immunization of mice with VP1 protein is ineffective. Cyclization of peptide is commonly used to improve their in vivo stability and biological activity. Here, we designed and synthesizd cyclic VP1 protein by using engineered split Rma DnaB intein and the cyclization efficiency was 100% in E...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137624/incorporation-of-a-bi-functional-protein-fimh-enhances-the-immunoprotection-of-chitosan-pvp1-vaccine-against-coxsackievirus-b3-induced-myocarditis
#20
Xiangmei Fan, Yan Yue, Sidong Xiong
Viral myocarditis is a common clinical cardiovascular disease mainly induced by coxsackievirus B3 (CVB3) with no effective therapeutic measures. Induction of efficient mucosal immune responses is very critical against CVB3-induced myocarditis. FimH is an Escherichia coli (E. coli)-derived protein, which possesses an M cell-targeting property and functions as a TLR4 agonist. In this study, we introduced the recombinant FimH protein, into our previously developed CVB3 mucosal vaccine chitosan (CS)-pVP1, aiming to provoke more efficient mucosal immune responses and immunoprotection against CVB3-induced myocarditis...
April 2017: Antiviral Research
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