Effects of the thermal denaturation of Sabin-derived inactivated polio vaccines on the D-antigenicity and the immunogenicity in rats. Issue 17 (9th April 2020)

• Record Type: Journal Article
• Authors: Murakami, Kosuke; Fujii, Yoshiki; Someya, Yuichi
• Is Part Of: Vaccine. Volume 38:Issue 17(2020)
• Page Start: 3295
• Page End: 3299
• Publication Date: 2020-04-09
• Subjects: Inactivated polio vaccine -- Sabin IPV -- D-antigen -- Neutralizing antibody -- ELISA; bOPV bivalent oral polio vaccine -- cIPV conventional IPV -- DTaP diphtheria, tetanus and acellular pertussis -- IPV inactivated polio vaccine -- sIPV Sabin-derived IPV -- tOPV trivalent oral polio vaccine -- VDPV vaccine-derived poliovirus; Vaccines -- Periodicals; 615.372
• DOI: 10.1016/j.vaccine.2020.03.027
• Languages: English
• ISSNs: 0264-410X

Abstract

Abstract: The efficacy of a Sabin-derived inactivated polio vaccine (sIPV) can be evaluated by measuring the immunogenicity and the contents of D-antigens, which induce the neutralizing antibodies. The immunogenic potency test in rats was done as a national assay in Japan. The two manufacturers of sIPV in Japan have performed both assays since development, and there is no clear discrepancy between the results obtained in the two assays. To further know the relationship between the two assays, we analyzed the effects of the heat treatment of sIPV on the D-antigenicity and the immunogenicity. We observed that the marginal D-antigen that remained after the thermal treatment was capable of inducing relatively high neutralizing antibodies in rats. This indicates that the measurement of the D-antigen contents as part of the quality control of sIPV is more sensitive and appropriate to detect denatured vaccines.