PMID- 7201778 OWN - NLM STAT- MEDLINE DCOM- 19820917 LR - 20190920 IS - 0166-3542 (Print) IS - 0166-3542 (Linking) VI - 2 IP - 1-2 DP - 1982 May TI - Antiviral effects if ribavirin and 6-mercapto-9-tetrahydro-2-furylpurine against dengue viruses in vitro. PG - 69-79 AB - The antiviral effects of ribavirin (1-beta-D-ribofuranosyl-1,2,4-triazole-3-carboxamide) and 6-mercapto-9-tetrahydro-2-furylpurine (6-MPTF) against dengue viruses were examined in vitro. Ribavirin significantly reduced the growth of dengue virus types 1-4 in LLC-MK2 cells at concentrations well below cytotoxic levels (cell viability was determined by trypan blue dye exclusion) Addition of guanosine to ribavirin-treated dengue virus-infected cell cultures completely reversed the antiviral effect of the drug. In contrast, ribavirin had no effect on dengue virus replication in human peripheral blood leukocytes (PBL). 6-MPIF, a specific inhibitor of hypoxanthine-guanine phosphoribosyltransferase, did not significantly reduce the growth of dengue viruses in either LIC-MK2 cells or human PBL. However, synergistic effects of 6-MPTF and ribavirin were observed, as combined treatment of the drugs markedly suppressed the replication of dengue viruses in human PBL. The successful demonstration that dengue virus replication in mononuclear leukocytes is markedly suppressed by the combined treatment of ribavirin and 6-MPTF signals a need to evaluate the efficacy of this treatment against dengue virus infections in vivo. FAU - Koff, W C AU - Koff WC FAU - Elm, J L Jr AU - Elm JL Jr FAU - Halstead, S B AU - Halstead SB LA - eng GR - 2-R01-HD08693/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Antiviral Res JT - Antiviral research JID - 8109699 RN - 0 (6-mercapto-9-(tetrahydro-2-furyl)purine) RN - 0 (Nucleosides) RN - 0 (Ribonucleosides) RN - 49717AWG6K (Ribavirin) RN - E7WED276I5 (Mercaptopurine) SB - IM MH - Animals MH - Cells, Cultured MH - Dengue Virus/*drug effects/growth & development MH - Drug Synergism MH - Fibroblasts MH - Humans MH - Leukocytes/drug effects MH - Macaca mulatta MH - Mercaptopurine/*analogs & derivatives/pharmacology MH - Nucleosides/pharmacology MH - Ribavirin/*pharmacology MH - Ribonucleosides/*pharmacology EDAT- 1982/05/01 00:00 MHDA- 2001/03/28 10:01 CRDT- 1982/05/01 00:00 PHST- 1982/05/01 00:00 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1982/05/01 00:00 [entrez] AID - 0166-3542(82)90027-4 [pii] AID - 10.1016/0166-3542(82)90027-4 [doi] PST - ppublish SO - Antiviral Res. 1982 May;2(1-2):69-79. doi: 10.1016/0166-3542(82)90027-4.