PMID- 3497985 OWN - NLM STAT- MEDLINE DCOM- 19871015 LR - 20061115 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 139 IP - 6 DP - 1987 Sep 15 TI - Isotype concentrations of human antibodies to Haemophilus influenzae type b polysaccharide (Hib) in young adults immunized with the polysaccharide as such or conjugated to a protein (diphtheria toxoid). PG - 1999-2004 AB - Antibody responses of young adults to Haemophilus influenzae type b polysaccharide (Hib) or its protein conjugate were studied with special attention to the isotype composition of the antibodies. Three conclusions of interest can be made: 1) Immunoglobulin G (IgG) antibodies in polysaccharide-immunized volunteers displayed the subclass pattern previously found in antibodies to meningococcal type A polysaccharide. IgG1 was the predominant subclass in IgG antibodies of some individuals, IgG2 in others. Still others had the two subclasses in varying but more even proportions. 2) The conjugate vaccine induced a geometric mean response 2 to 3 times higher and an IgG response 4 times higher to Hib than the polysaccharide vaccine. 3) Anti-Hib antibodies induced by the conjugate vaccine still had essentially the same IgG subclass composition as anti-Hib antibodies induced by the polysaccharide. This composition was strikingly different from the composition of the anti-diphtheria toxoid response induced by the same conjugate vaccine. FAU - Makela, O AU - Makela O FAU - Mattila, P AU - Mattila P FAU - Rautonen, N AU - Rautonen N FAU - Seppala, I AU - Seppala I FAU - Eskola, J AU - Eskola J FAU - Kayhty, H AU - Kayhty H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Antibodies, Bacterial) RN - 0 (Bacterial Vaccines) RN - 0 (Diphtheria Toxoid) RN - 0 (Immunoglobulin A) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin Isotypes) RN - 0 (Immunoglobulin M) RN - 0 (Polysaccharides, Bacterial) SB - IM MH - Antibodies, Bacterial/*immunology MH - Bacterial Vaccines/immunology MH - Diphtheria Toxoid/immunology MH - Haemophilus influenzae/*immunology MH - Humans MH - Immunoglobulin A/biosynthesis MH - Immunoglobulin G/biosynthesis MH - Immunoglobulin Isotypes/*immunology MH - Immunoglobulin M/biosynthesis MH - Polysaccharides, Bacterial/*immunology EDAT- 1987/09/15 00:00 MHDA- 1987/09/15 00:01 CRDT- 1987/09/15 00:00 PHST- 1987/09/15 00:00 [pubmed] PHST- 1987/09/15 00:01 [medline] PHST- 1987/09/15 00:00 [entrez] PST - ppublish SO - J Immunol. 1987 Sep 15;139(6):1999-2004.