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Viral myocarditis

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https://www.readbyqxmd.com/read/29136142/the-forkhead-transcription-factor-foxo3-negatively-regulates-natural-killer-cell-function-and-viral-clearance-in-myocarditis
#1
Madlen Loebel, Luise Holzhauser, Jelka A Hartwig, Praphulla C Shukla, Konstantinos Savvatis, Alexander Jenke, Martina Gast, Felicitas Escher, Sonya C Becker, Sandra Bauer, Andrea Stroux, Antje Beling, Meike Kespohl, Sandra Pinkert, Henry Fechner, Uwe Kuehl, Dirk Lassner, Wolfgang Poller, Heinz-Peter Schultheiss, Tanja Zeller, Stefan Blankenberg, Anna-Pia Papageorgiou, Stephane Heymans, Ulf Landmesser, Carmen Scheibenbogen, Carsten Skurk
Aims: Foxo3 is a transcription factor involved in cell metabolism, survival, and inflammatory disease. However, mechanistic insight in Foxo3 effects is still limited. Here, we investigated the role of Foxo3 on natural killer (NK) cell responses and its effects in viral myocarditis. Methods and results: Effects of Foxo3 on viral load and immune responses were investigated in a model of coxsackie virus B3 myocarditis in wild-type (WT) and Foxo3 deficient mice. Reduced immune cell infiltration, viral titres, and pro-inflammatory cytokines in cardiac tissue were observed in Foxo3-/- mice 7 days post-infection (p...
November 9, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29109860/development-and-application-of-an-indirect-elisa-for-the-detection-of-antibodies-against-encephalomyocarditis-virus
#2
Li Zhang, Yan Qi, Li Luo, Jiguo Sun, Wanzhe Yuan
Encephalomyocarditis virus (EMCV) can cause acute myocarditis in young pigs or reproductive failure in sows. It has been recognized worldwide as a pathogen infecting many species and causes substantial economic losses. In the present study, an indirect ELISA was developed for the detection of antibodies to EMCV. The VP1 gene of EMCV was amplified by reverse transcription-quantitative polymerase chain reaction and expressed in Escherichia coli with 49.3 kDa under the condition of isopropyl-β-d-thiogalactoside...
November 2017: Biomedical Reports
https://www.readbyqxmd.com/read/29108785/semaphorin7a-aggravates-coxsackievirusb3-induced-viral-myocarditis-by-increasing-%C3%AE-1%C3%AE-1-integrin-macrophages-and-subsequent-enhanced-inflammatory-response
#3
Xuejie Wu, Yawen Meng, Chao Wang, Yan Yue, Chunsheng Dong, Sidong Xiong
Semaphorin7A (Sema7A) has been reported to play various roles in nerve axon growth, tumor suppression, and tissue remodeling, as well as regulation of intestinal inflammation diseases. Viral myocarditis (VMC) characterized by viral-myocardial-cell necrosis and inflammatory cell infiltration is a common clinical disease of the cardiovascular system. However, the role of Sema7A in coxsackievirus B3 (CVB3)-induced VMC has not been reported. In this study, we generated an acute VMC mouse model by CVB3 infection, and manipulated Sema7A expression by in vivo polyethyleneimine-mediated Sema7A down-regulation...
November 3, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29096746/overexpression-of-microrna-133b-reduces-myocardial-injuries-in-children-with-viral-myocarditis-by-targeting-rab27b-gene
#4
Y Zhang, L Sun, H Sun, X Liu, X Luo, C Li, D Sun, T Li
The present study is to measure the expression of microRNA (miRNA or miR)-133b in circulating blood of children with viral myocarditis before and after drug treatment, and to investigate its relationship with the severity of myocardial lesions. A total of 36 children patients with viral myocarditis who received treatments at our hospital between June 2014 and June 2016 were enrolled in the present study, including 21 boys and 15 girls (age range, 9 months - 16 years).Quantitative real-time polymerase chain reaction was used to determine the expression of miR-133b in peripheral blood of patients and cardiomyocytes infected with CVB3...
October 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29077601/live-threatening-autoimmune-cardiomyopathy-reproducibly-induced-in-a-patient-by-checkpoint-inhibitor-therapy
#5
Azadeh Tajmir-Riahi, Tanja Bergmann, Michael Schmid, Abbas Agaimy, Gerold Schuler, Lucie Heinzerling
Checkpoint inhibitors induce a plethora of immune-related adverse events (irAEs) including autoimmune colitis, hepatitis, endocrinopathies, and rarer side effects like neuritis. Here, a case of autoimmune cardiomyopathy (grade 3 CTCAE) and myocarditis under combination therapy with nivolumab plus ipilimumab in a 72-year-old melanoma patient is reported. Treatment induced a partial response for 14 months. However, after 10 infusions the patient developed dyspnea, edema of the legs, ascites and a weight gain of 10 kg because of a decompensated heart insufficiency with a reduced ejection fraction from formerly 48%-50% to 15%...
October 26, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29072176/premature-coronary-artery-disease-due-to-homozygous-familial-hypercholesterolemia-in-a-12-year-old-girl
#6
Filiz Ekici, Salih Özçobanoğlu, Fırat Kardelen
BACKGROUND: Homozygous familial hypercholesterolemia (HoFH) is a rare inherited metabolic disease, caused by low-density lipoprotein receptor abnormality. Patients with HoFH have an increased risk for cardiovascular complication (CVC) that usually occurs in the first decade of life. We report a twelve years-old girl with unpredicted presentation for coronary artery disease (CAD) and she was found to have HoFH. CASE REPORT: A 12 years old girl was admitted to our unit with syncope...
October 26, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29068414/itraq-based-identification-of-proteins-related-to-muscle-growth-in-the-pacific-abalone-haliotis-discus-hannai
#7
Jianfang Huang, Weiwei You, Xuan Luo, Caihuan Ke
The abalone Haliotis discus hannai is an important aquaculture species that is grown for human consumption. However, little is known of the genetic mechanisms governing muscle growth in this species, particularly with respect to proteomics. The isobaric tag for relative and absolute quantitation (iTRAQ) method allows for sensitive and accurate protein quantification. Our study was the first to use iTRAQ-based quantitative proteomics to investigate muscle growth regulation in H. discus hannai. Among the 1904 proteins identified from six samples, 125 proteins were differentially expressed in large specimens of H...
October 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29043433/mcpip1-inhibits-coxsackievirus-b3-replication-by-targeting-viral-rna-and-negatively-regulates-virus-induced-inflammation
#8
Min Li, Kepeng Yan, Lin Wei, Yang Yang, Qian Qian, Wei Xu
Monocyte chemotactic protein-induced protein 1(MCPIP1) is identified as an important inflammatory regulator during immune response. MCPIP1 possesses antiviral activities against several viruses, such as Japanese encephalitis. However, its role on Coxsackievirus B3 (CVB3) infection, a positive-stranded RNA virus, has not been addressed. Here, we reported that MCPIP1 was up-regulated in cardiomyocytes by CVB3 infection and in hearts and pancreas of infected mice. Then we found that overexpression of MCPIP1 inhibited CVB3 replication and knockdown of it promoted virus replication...
October 17, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29039828/-clinical-laboratory-and-instrumental-criteria-for-myocarditis-established-in-comparison-with-myocardial-biopsy-a-non-invasive-diagnostic-algorithm
#9
O V Blagova, Yu V Osipova, A V Nedostup, E A Kogan, V A Sulimov
AIM: To determine the diagnostic value of different clinical, laboratory, and instrumental signs in the diagnosis of myocarditis in patients with the picture of idiopathic arrhythmias, dilated cardiomyopathy (DCM) and in a comparison group when comparing with myocardial morphological examination. SUBJECTS AND METHODS: A study group included 100 patients (35 women; mean age, 44.7±12.5 years) with idiopathic arrhythmias (n=20) and DCM as a syndrome (n=100). All underwent myocardial morphological examination: endomyocardial biopsy (EMB) (n=71), intraoperative biopsy (n=13), study of the explanted heart (n=6), and autopsy (n=11)...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/29039143/cd80-regulates-th17-cell-differentiation-in-coxsackie-virus-b3-induced-acute-myocarditis
#10
Yanlan Huang, Yong Li, Bin Wei, Weifeng Wu, Xingcui Gao
The cluster of differentiation protein complex, CD80/CD86, regulates Th1/Th2 differentiation in autoimmune disease. In order to establish the effects of CD80/CD86 on Th17 cell differentiation in acute viral myocarditis (VMC), we infected C57BL/6 mice with Coxsackie virus B3 (CVB3) and examined the effects of the treatment with anti-CD80/CD86 monoclonal antibodies (mAbs) on Th17 cell differentiation in vivo. The effects of anti-CD80/CD86 mAbs on Th17 cell differentiation were further evaluated in vitro. The treatment with anti-CD80 mAb induced marked suppression of Th17 cell differentiation and ROR-γt mRNA expression, whereas anti-CD86 mAb alone had no effect, both in vivo and in vitro...
October 16, 2017: Inflammation
https://www.readbyqxmd.com/read/29036973/-predictive-value-of-cardiac-magnetic-resonance-derived-parameters-on-the-improvement-of-left-ventricular-function-in-patients-with-acute-viral-myocarditis
#11
H C Ouyang, F C Ouyang, L L Mai, Y Y Chen, Y Z Hu, H X Chen, W S Li
Objective: To evaluate the predictive value of cardiac magnetic resonance (CMR)-derived parameters on the improvement of left ventricular function in patients with acute viral myocarditis. Methods: Forty patients, who referred for acute viral myocarditis in our hospital from September 2011 to September 2015, were prospectively enrolled in this study.All patients were examined by CMR during hospitalization for acute viral myocarditis (baseline) and after 12 months.The CMR sequences include: two dimension steady state free precession, 2D SSFP; triple inversion recovery, triple IR; early gadolinium enhancement; phase sensitive inversion recovery turbo field echo, PSIR TFE...
September 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29032641/cholic-acid-attenuate-er-stress-induced-cell-death-in-coxsackievirus-b3-infection
#12
Jae-Young Han, Hae In Jeong, Cheol-Woo Park, Jisoo Yoon, Jaeyoung Ko, Sang-Jip Nam, Byung-Kwan Lim
Coxsackievirus Type B3 (CVB3) is an enterovirus that belongs to the Picornaviridae and causes of various diseases such as myocarditis and hand-foot-mouth diseases. But effective antiviral drug was still not developed. In this study, we looking for potential inhibitors of CVB3 replication by examining survival of CVB3-infected HeLa cells. We detected an antiviral effect of cholic acid and identified it as a candidate inhibitor of CVB3 replication. Cholic acid circulates in the liver and intestines, and it helps digestion and absorption of lipids in small intestine...
October 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29022232/a-case-of-fatal-perimyocarditis-due-to-a-rare-disease
#13
Stefanie Plenzig, Sara Heinbuch, Hannelore Held, Marcel A Verhoff, Constantin Lux
Although myocarditis is caused by viral infections in about 50% of cases in European countries, various other causative agents are known. We report the case of a 51-year-old man who died several months after being diagnosed with asthma by his general practitioner. This diagnosis had been confirmed by a pulmonologist approximately 6 weeks before the man's death. To rule out the possibility of medical malpractice the prosecuting authority ordered a forensic autopsy. At autopsy macroscopic indicators for perimyocarditis and pneumonia were found...
December 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28977879/specific-microrna-library-of-ifn-%C3%AF-on-bovine-endometrial-epithelial-cells
#14
Haichong Wu, Tao Zhang, Xiaofei Ma, Kangfeng Jiang, Gan Zhao, Changwei Qiu, Ganzhen Deng
IFN-τ is specifically secreted by the conceptus in ruminants during early pregnancy, and it plays a vital role in the immunological function of pregnancy. However, its mechanism involving microRNA (miRNA) is still not well understood. Deep sequencing was used to explore the specific miRNA library of IFN-τ on bovine endometrial epithelial cells (bEECs). The results showed that 574 known bovine miRNAs and 109 novel miRNAs were identified. We found 74 differentially expressed miRNAs, including 30 commonly expressed miRNAs in the experiment...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28973047/tlr3-is-required-for-survival-following-coxsackievirus-b3-infection-by-driving-t-lymphocyte-activation-and-polarization-the-role-of-dendritic-cells
#15
Renata Sesti-Costa, Marcela Cristina Santiago Françozo, Grace Kelly Silva, José Luiz Proenca-Modena, João Santana Silva
Type B coxsackievirus (CVB) is a common cause of acute and chronic myocarditis, meningitis and pancreatitis, often leading to heart failure and pancreatic deficiency. The polarization of CD4+ T lymphocytes and their cytokine milieu are key factors in the outcome of CVB-induced diseases. Thus, sensing the virus and driving the adaptive immune response are essential for the establishment of a protective immune response. TLR3 is a crucial virus recognition receptor that confers the host with resistance to CVB infection...
2017: PloS One
https://www.readbyqxmd.com/read/28950225/immunological-and-pathological-consequences-of-coxsackievirus-rna-persistence-in-the-heart
#16
Claudia T Flynn, Taishi Kimura, Kwesi Frimpong-Boateng, Stephanie Harkins, J Lindsay Whitton
Type B coxsackieviruses (CVB) can cause myocarditis and dilated cardiomyopathy (DCM), a potentially-fatal sequela that has been correlated to the persistence of viral RNA. Herein, we demonstrate that cardiac RNA persistence can be established even after an inapparent primary infection. Using an inducible Cre/lox mouse model, we ask: (i) Does persistent CVB3 RNA cause ongoing immune activation? (ii) If T1IFN signaling into cardiomyocytes is ablated after RNA persistence is established, is there any change in the abundance of persistent CVB3 RNA and/or does cytopathic infectious virus re-emerge? (iii) Does this loss of T1IFN responsiveness by cardiomyocytes lead to the recurrence/exacerbation of myocarditis? Our findings suggest that persistent enteroviral RNAs probably do not contribute to ongoing myocardial disease, and are more likely to be the fading remnants of a recent, possibly sub-clinical, primary infection which may have set in motion the process that ultimately ends in DCM...
December 2017: Virology
https://www.readbyqxmd.com/read/28933176/-myocarditis-and-inflammatory-cardiomyopathy
#17
Dalibor Mlejnek, Jan Krejčí
Myocarditis is an inflammation of the heart muscle. The most common cause of myocarditis is viral infection in industrialized countries. Myocarditis with left ventricular dysfunction is called inflammatory cardiomyopathy and is the major cause of dilated cardiomyopathy. The clinical picture is very diverse, most often the patient present with signs of heart failure, arrhythmic symptoms and chest pains. Despite significant advances in non-invasive diagnostics, particularly magnetic resonance imaging, endomyocardial biopsy remains the gold standard of myocarditis diagnosis...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28914852/-efficiency-of-immunosuppressive-therapy-in-virus-negative-and-virus-positive-patients-with-morphologically-verified-lymphocytic-myocarditis
#18
O V Blagova, A V Nedostup, E A Kogan, V A Sulimov
AIM: To evaluate the efficiency of immunosuppressive therapy (IST) in virus-negative (V-) and virus-positive (V+) patients with lymphocytic myocarditis (LM). SUBJECTS AND METHODS: 60 patients (45 males) (mean age 46.7±11.8 years) with dilated cardiomyopathy (mean left ventricular (LV) end diastolic size (EDS) 6.7±0.7 cm; ejection fraction (EF) 26.2±9.1%) were examined. The diagnosis of active/borderline LM was verified by right ventricular endomyocardial biopsy in 38 patients, by intraoperative LV biopsy in 10, in the study of explanted hearts from 3 patients and at autopsy in 9...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28912259/nod2-nucleotide-binding-oligomerization-domain-2-is-a-major-pathogenic-mediator-of-coxsackievirus-b3-induced-myocarditis
#19
Carsten Tschöpe, Irene Müller, Yu Xia, Konstantinos Savvatis, Kathleen Pappritz, Sandra Pinkert, Dirk Lassner, Markus M Heimesaat, Frank Spillmann, Kapka Miteva, Stefan Bereswill, Heinz-Peter Schultheiss, Henry Fechner, Burkert Pieske, Uwe Kühl, Sophie Van Linthout
BACKGROUND: The cytoplasmatic pattern recognition receptor, NOD2 (nucleotide-binding oligomerization domain 2), belongs to the innate immune system and is among others responsible for the recognition of single-stranded RNA. With Coxsackievirus B3 (CVB3) being a single-stranded RNA virus, and the recent evidence that the NOD2 target, NLRP3 (NOD-like receptor family, pyrin domain containing 3) is of importance in the pathogenesis of CVB3-induced myocarditis, we aimed to unravel the role of NOD2 in CVB3-induced myocarditis...
September 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28912184/inflammatory-cardiomyopathic-syndromes
#20
REVIEW
Barry H Trachtenberg, Joshua M Hare
Inflammatory activation occurs in nearly all forms of myocardial injury. In contrast, inflammatory cardiomyopathies refer to a diverse group of disorders in which inflammation of the heart (or myocarditis) is the proximate cause of myocardial dysfunction, causing injury that can range from a fully recoverable syndrome to one that leads to chronic remodeling and dilated cardiomyopathy. The most common cause of inflammatory cardiomyopathies in developed countries is lymphocytic myocarditis most commonly caused by a viral pathogenesis...
September 15, 2017: Circulation Research
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