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. 1977 Jan;11(1):122–125. doi: 10.1128/aac.11.1.122

Inhibition of Multiplication of Mycobacterium leprae by Polyinosinic-Polycytidylic Acid

Louis Levy 1, Thomas C Merigan *
PMCID: PMC351930  PMID: 319745

Abstract

Contrary to the results of an earlier study in which polyinosinic-polycytidylic acid [poly(I:C)] administered intraperitoneally to mice had no effect on multiplication of Mycobacterium leprae in the mouse footpad, the local administration of poly(I:C) every 12 h for 15 doses during logarithmic multiplication was found both to inhibit bacterial multiplication and to produce high tissue levels of interferon (IF). Local administration of poly(I) alone inhibited multiplication of M. leprae to almost as great a degree without at the same time producing a measurable IF titer in the footpad tissues. Mouse IF and “mock” IF both inhibited bacterial multiplication to the same degree, but administration of only the former resulted in a measurable IF titer. Polyadenylic-polyuridylic acid administered locally neither inhibited multiplication nor induced IF; fetal calf serum, administered in the same concentration as found in the preparations of IF and mock IF, was modestly inhibitory, without inducing IF. Thus, the local administration of poly(I:C) appears to have inhibited multiplication of M. leprae independently of IF induction.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Field A. K., Tytell A. A., Lampson G. P., Hilleman M. R. Inducers of interferon and host resistance. II. Multistranded synthetic polynucleotide complexes. Proc Natl Acad Sci U S A. 1967 Sep;58(3):1004–1010. doi: 10.1073/pnas.58.3.1004. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Hanna L., Merigan T. C., Jawetz E. Inhibition of TRIC agents by virus-induced interferon. Proc Soc Exp Biol Med. 1966 Jun;122(2):417–421. doi: 10.3181/00379727-122-31150. [DOI] [PubMed] [Google Scholar]
  3. Levy L., Merigan T. C. Failure of an interferon inducer to inhibit multiplication of Mycobacterium leprae. Proc Soc Exp Biol Med. 1970 May;134(1):87–89. doi: 10.3181/00379727-134-34734. [DOI] [PubMed] [Google Scholar]
  4. Shepard C. C., McRae D. H. A method for counting acid-fast bacteria. Int J Lepr Other Mycobact Dis. 1968 Jan-Mar;36(1):78–82. [PubMed] [Google Scholar]

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