Myocarditis

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Microscopic image of myocarditis, viral and bacterial endocarditis

Myocarditis or inflammatory cardiomyopathy is an inflammation of the heart muscle. It can be caused by numerous toxic or infectious agents.

Coxsackie B3 is found in 20-25% of patients with cardiomyopathy and myocarditis.[1][2][3][4] In mouse models, Ampligen was found to be protective of Coxsackie B3-induced myocarditis.[5]

Several studies of a mouse model of Coxsackie B3 myocarditis have found that exercise increases the virulence of the infection and results in poorer outcomes.[6][7][8][9][10]

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  1. ↑ Tracy S, Chapman NM, McManus BM, Pallansch MA, Beck MA, et al. (1990) A molecular and serologic evaluation of enteroviral involvement in human myocarditis. J Mol Cell Cardiol 22: 403–414.
  2. ↑ Bowles NE, Richardson PJ, Olsen EG, Archard LC (1986) Detection of Coxsackie-B-virus-specific RNA sequences in myocardial biopsy samples from patients with myocarditis and dilated cardiomyopathy. Lancet 1: 1120–1123.
  3. ↑ Martin AB, Webber S, Fricker FJ, Jaffe R, Demmler G, et al. (1994) Acute myocarditis. Rapid diagnosis by PCR in children. Circulation 90: 330–339.
  4. ↑ Jin O, Sole MJ, Butany JW, Chia WK, McLaughlin PR, et al. (1990) Detection of enterovirus RNA in myocardial biopsies from patients with myocarditis and cardiomyopathy using gene amplification by polymerase chain reaction. Circulation 82: 8–16.
  5. ↑ Padalko, E (January 2004). "The interferon inducer ampligen [poly(I)-poly(C12U)] markedly protects mice against coxsackie B3 virus-induced myocarditis". Antimicrobial Agents and Chemotherapy. 48: 267–74.
  6. ↑ Cabinian AE, Kiel RJ, Smith F, Ho KL, Khatib R, Reyes MR. Modification of exercise-aggravated coxsackie virus B3 murine myocarditis by T-lymphocyte suppression in an inbred model. J. Lab. Clin. Med. 1990; 115: 454– 62.
  7. ↑ Kiel RJ, Smith FE, Chason J, Khatib R, Reyes MD. Coxsackie B3 myocarditis in C3H/HeJ mice: Description of an inbred model and the effect of exercise on the virulence. Eur. J. Epidemiol. 1989; 5: 248– 67.
  8. ↑ Ilbäck, NG (June 1989). "Exercise in coxsackie B3 myocarditis: Effects on heart lymphocyte subpopulations and the inflammatory reaction". American Heart Journal. 117: 1298–302.
  9. ↑ Gatmaitan, Bienvenido (June 1, 1970). "Augmentation of the Virulence of Murine Coxsackie Virus B-3 Myocardiopathy by Exercise". Journal of Experimental Medicine. 131: 1121.
  10. ↑ Reyes, MP (February 1976). "Interferon and neutralizing antibody in sera of exercised mice with coxsackievirus B-3 myocarditis". Proceedings of the Society for Experimental Biology and Medicine. 151: 333–8.

mouse model The use of special strains of mice to study a human disease or condition, and how to prevent and treat it

mouse model The use of special strains of mice to study a human disease or condition, and how to prevent and treat it

enterovirus A genus of RNA viruses which typically enter the body through the respiratory or gastrointestinal systems and sometimes spread to the central nervous system or other parts of the body, causing neurological, cardiac, and other damage. Since the first reports of myalgic encephalomyelitis (ME), enteroviruses have been suspected as a cause of ME. Enteroviruses have also been implicated as the cause of Type I diabetes, congestive heart failure, and other conditions. Enteroviruses include poliovirus, coxsackieviruses, and many others. New enteroviruses and new strains of existing enteroviruses are continuously being discovered. (Learn more: viralzone.expasy.org)

enterovirus A genus of RNA viruses which typically enter the body through the respiratory or gastrointestinal systems and sometimes spread to the central nervous system or other parts of the body, causing neurological, cardiac, and other damage. Since the first reports of myalgic encephalomyelitis (ME), enteroviruses have been suspected as a cause of ME. Enteroviruses have also been implicated as the cause of Type I diabetes, congestive heart failure, and other conditions. Enteroviruses include poliovirus, coxsackieviruses, and many others. New enteroviruses and new strains of existing enteroviruses are continuously being discovered. (Learn more: viralzone.expasy.org)

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