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  • Burova, LA (author)

Induction of myocarditis in rabbits injected with group A streptococci

  • Article/chapterEnglish2004

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  • 2004

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  • LIBRIS-ID:oai:lup.lub.lu.se:92cb66ab-b54a-4d4e-864b-8677fb324f4c
  • https://lup.lub.lu.se/record/272838URI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

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  • Background & objectives: We have earlier proposed that group A streptococcal (GAS) immunoglobulin binding surface proteins (IgGBPs) might trigger anti-IgG production and immune complex formation leading to glomerulonephritis. In the present study, cardiac tissue material from rabbits injected with heat-killed GAS was investigated. Methods: Rabbits were injected intravenously with 10(9) colony forming units of streptococci three times weekly for 8 wk. Cardiac tissue samples were obtained at different times and deposition of IgG, C3, TNF-alpha and IL-6 was studied. Results: After 8 or more weeks of intravenous (iv) injections, minimal changes were seen in animals receiving an IgG non-binding GAS strain, type T27, whereas in those animals receiving either of two IgG binding GAS strains, types M1 or M22, strong inflammatory and degenerative myocardial changes accompanied by deposition of IgG and C3 were noted. Furthermore, on injecting rabbits with defined mutants of a type M22 strain, the development of myocardial tissue damage proved to. be dependent on the presence streptococcal IgGBPs. Interpretation & conclusion: The present data supported a role of streptococcal IgGBPs in the induction of myocardial tissue injury by GAS.

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  • Nagornev, VA (author)
  • Pigarevsky, PV (author)
  • Gladilina, MM (author)
  • Molchanova, IV (author)
  • Gavrilova, EA (author)
  • Totolian, AA (author)
  • Thern, A (author)
  • Schalén, ClaësLund University,Lunds universitet,Avdelningen för medicinsk mikrobiologi,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Medical Microbiology,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)mmb-csc (author)
  • Avdelningen för medicinsk mikrobiologiInstitutionen för laboratoriemedicin (creator_code:org_t)

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  • In:Indian Journal of Medical Research119, s. 183-1850971-5916

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