Abstract
At the same dosage, the new generation of Sabin-inactivated poliovirus vaccine (sIPV) is less immunogenic than the traditional oral polio vaccine (OPV) dosage in China. The useful adjuvant might be a necessary strategy to strengthen the immune protective effects. In this study, we produced an adjuvant compound (named KML05) that could promote immunogenicity and fractional doses of sIPV with a long duration of protection in a rat model. The compound adjuvant had both advantages and a function of MF59 and carbopol971P. The effect seroconversion of experimental animals immunized with KML05 could be extended to one-eighth of the dose. According to the result of the geometric mean titers (GMTs), KML05 adjuvant could save eight times the amount of sIPV D-antigen usage, but aluminum hydroxide adjuvant could save twice at the same titers. Additionally, it was found that there was a significant difference in the GMT titer of poliovirus type 2 between animals immunized by KML05 and alum adjuvant (P < 0.05). At 12th-month postvaccination, the neutralization titers stimulated by IPV-KML05 were maintained over a longer time period in immunized animals. Our research team developed KML05 adjuvant, which combined carbopol971P with MF59, increa...Continue Reading
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