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The present study evaluated the plasmid biodistribution after the administration of CIGB-230 in mice, as well as toxicity of this vaccine candidate in rats. In the biodistribution study, mice received single or repeated intramuscular injections of CIGB-230, 50 \u03bcg of plasmid DNA mixed with 5 \u03bcg of Co.120 protein. Plasmid presence was assessed in ovaries, kidney, liver, pancreas, mesenteric ganglion, blood, and muscle of the injection site by a qualitative polymerase chain reaction. The toxicology evaluation included treatment groups receiving doses 5, 15, or 50 times higher, according to the body weight, than the expected therapeutic clinical dose. During the first hour after repeated inoculation, a promiscuous distribution was observed. However, 3 months later, plasmid could not be detected in any tissue. There was an absence of detectable adverse effects on key toxicology parameters and no damage evidenced in inspected organs and tissues. These results indicate that CIGB-230 is nontoxic at local and systemic levels and no concerns about persistence are observed, which support clinical testing of this vaccine candidate against HCV.<\/jats:p>","DOI":"10.1177\/0960327109106438","type":"journal-article","created":{"date-parts":[[2009,9,7]],"date-time":"2009-09-07T20:46:33Z","timestamp":1252356393000},"page":"479-491","source":"Crossref","is-referenced-by-count":6,"title":["Toxicology and biodistribution study of CIGB-230, a DNA vaccine against hepatitis C virus"],"prefix":"10.1177","volume":"28","author":[{"given":"Dania","family":"Bacard\u00ed","sequence":"first","affiliation":[{"name":"Center for Genetic Engineering and Biotechnology, Cubanac\u00e1n, Playa, Havana, Cuba,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yalena","family":"Amador-Ca\u00f1izares","sequence":"additional","affiliation":[{"name":"Center for Genetic Engineering and Biotechnology, Cubanac\u00e1n, Playa, Havana, 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