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Hyporesponsiveness and its clinical implications after vaccination with polysaccharide or glycoconjugate vaccines

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Pages 307-322 | Published online: 09 Jan 2014

Figures & data

Figure 1. T-cell-independent and T-cell-dependent responses to polysaccharide and glycoconjugate vaccines.

(A) B cells directly recognize vaccine polysaccharides. No interaction occurs between Th and B cells (B) B cells recognize the polysaccharide–protein conjugate of the vaccine. The protein carrier is processed and presented to Th cells in the context of the MHC, which induces T-cell activation. In turn, T cells stimulate the specific B cells to produce antibodies against the conjugate.

Th: T helper.

Figure 1. T-cell-independent and T-cell-dependent responses to polysaccharide and glycoconjugate vaccines.(A) B cells directly recognize vaccine polysaccharides. No interaction occurs between Th and B cells (B) B cells recognize the polysaccharide–protein conjugate of the vaccine. The protein carrier is processed and presented to Th cells in the context of the MHC, which induces T-cell activation. In turn, T cells stimulate the specific B cells to produce antibodies against the conjugate.Th: T helper.
Figure 2. Contrasting responses following repeated meningococcal C or A polysaccharide vaccine.

SBA (rabbit complement) GMTs against serogroup A (A) and C (B) in Gambian infants post-vaccination with MenAC-PS vaccine at 19.7 months or 5 years of age Citation[55,62]. Group MenAC-PS had received prior MenAC-PS at 3 and 6 months; group MenAC-CV+PS had received 1, 2 or 3 prior MenAC-CV doses and MenAC-PS at age 2 years; group MenAC-CV had received 1, 2 or 3 prior MenAC-CV doses and MenAC-PS at year 5. (C) SBA (rabbit complement) GMTs against serogroups A and C in Saudi Arabian 10–29-year olds post MenAC-PS in naive versus previously MenAC-PS-immunized subjects Citation[54]. (D) Percentage of toddlers (from a study conducted in Canada) with serogroup C SBAs ≥1:8 (human complement) after MenACWY-PS Citation[24]. Group MenACWY-PS received MenACWY-PS at study months 0, 2 and 14. Vaccine-naive subjects received MenACWY-PS at month 14. (E) SBA (human complement) GMTs against serogroup C after MenC-PS challenge in naive, MenC-PS or MenC-CV immunized adults Citation[53].

CV: Conjugate vaccine; GMT: Geometric mean antibody titer; MenAC: Meningococcal serogroups A and C; MenACYW: Meningococcal serogroup A, C, W-135 and Y; MenC: Meningococcal serogroup C; PS: Polysaccharide; SBA: Serum bactericidal antibodies.

Data taken from Citation[24,53–55,62].

Figure 2. Contrasting responses following repeated meningococcal C or A polysaccharide vaccine.SBA (rabbit complement) GMTs against serogroup A (A) and C (B) in Gambian infants post-vaccination with MenAC-PS vaccine at 19.7 months or 5 years of age Citation[55,62]. Group MenAC-PS had received prior MenAC-PS at 3 and 6 months; group MenAC-CV+PS had received 1, 2 or 3 prior MenAC-CV doses and MenAC-PS at age 2 years; group MenAC-CV had received 1, 2 or 3 prior MenAC-CV doses and MenAC-PS at year 5. (C) SBA (rabbit complement) GMTs against serogroups A and C in Saudi Arabian 10–29-year olds post MenAC-PS in naive versus previously MenAC-PS-immunized subjects Citation[54]. (D) Percentage of toddlers (from a study conducted in Canada) with serogroup C SBAs ≥1:8 (human complement) after MenACWY-PS Citation[24]. Group MenACWY-PS received MenACWY-PS at study months 0, 2 and 14. Vaccine-naive subjects received MenACWY-PS at month 14. (E) SBA (human complement) GMTs against serogroup C after MenC-PS challenge in naive, MenC-PS or MenC-CV immunized adults Citation[53].CV: Conjugate vaccine; GMT: Geometric mean antibody titer; MenAC: Meningococcal serogroups A and C; MenACYW: Meningococcal serogroup A, C, W-135 and Y; MenC: Meningococcal serogroup C; PS: Polysaccharide; SBA: Serum bactericidal antibodies.Data taken from Citation[24,53–55,62].
Figure 3. Effect of prior meningococcal polysaccharide vaccination on responses to meningococcal conjugate vaccine in adolescents.

SBA (rabbit complement) GMTs before and after initial meningococcal serogroup A, C, W-135 and Y (MenACWY)-PS vaccination at 14 years of age, and before and after MenACWY-CV booster 3 years later (squares); SBA (rabbit complement) GMTs in vaccine naive subjects after MenACWY-CV at 17 years of age (circles).

Error bars represent the 95% CIs.

GMT: Geometric mean antibody titer; SBA: Serum bactericidal antibody.

Data taken from Citation[56].

Figure 3. Effect of prior meningococcal polysaccharide vaccination on responses to meningococcal conjugate vaccine in adolescents.SBA (rabbit complement) GMTs before and after initial meningococcal serogroup A, C, W-135 and Y (MenACWY)-PS vaccination at 14 years of age, and before and after MenACWY-CV booster 3 years later (squares); SBA (rabbit complement) GMTs in vaccine naive subjects after MenACWY-CV at 17 years of age (circles).Error bars represent the 95% CIs.GMT: Geometric mean antibody titer; SBA: Serum bactericidal antibody.Data taken from Citation[56].
Figure 4. Antipneumococcal antibody GMCs (A) and opsonophagocytic activity GMTs (B) in adults ≥70 years of age administered PCV-7 (n = 110) or 23vPn-PS followed 1 year later by PCV-7 (n = 78).

Error bars represent the 95% CIs. Differences between the groups were statistically significant (p < 0.01) for all serotypes except OPA titers for serotype 19F.

GMC: Geometric mean antibody concentration; GMT: Geometric mean antibody titer; OPA: Opsonophagocytic assay: Pn: Pneumococcal; PS: Polysaccharide.

Data taken from Citation[86].

Figure 4. Antipneumococcal antibody GMCs (A) and opsonophagocytic activity GMTs (B) in adults ≥70 years of age administered PCV-7 (n = 110) or 23vPn-PS followed 1 year later by PCV-7 (n = 78).Error bars represent the 95% CIs. Differences between the groups were statistically significant (p < 0.01) for all serotypes except OPA titers for serotype 19F.GMC: Geometric mean antibody concentration; GMT: Geometric mean antibody titer; OPA: Opsonophagocytic assay: Pn: Pneumococcal; PS: Polysaccharide.Data taken from Citation[86].
Figure 5. Anti-pneumococcal antibody concentrations (non-22F ELISA) against serotype 3 following 11Pn-PD vaccination in infants.

Triangles represent vaccine-naive subjects vaccinated at month 12–15 with 23vPn-PS; Subjects were vaccinated at 2, 4 and 6 months with 11Pn-PD and then boosted at 12–15 months with either 11Pn-PD (represented by circles) or with 23vPn-PS (represented by squares).

GMC: Geometric mean antibody concentration.

Data taken from Citation[95].

Figure 5. Anti-pneumococcal antibody concentrations (non-22F ELISA) against serotype 3 following 11Pn-PD vaccination in infants.Triangles represent vaccine-naive subjects vaccinated at month 12–15 with 23vPn-PS; Subjects were vaccinated at 2, 4 and 6 months with 11Pn-PD and then boosted at 12–15 months with either 11Pn-PD (represented by circles) or with 23vPn-PS (represented by squares).GMC: Geometric mean antibody concentration.Data taken from Citation[95].
Figure 6. Schematic outlining the kinetics of the immune response on exposure to infection.
Figure 6. Schematic outlining the kinetics of the immune response on exposure to infection.

Table 1. Immune responses to pneumococcal serotypes in different populations illustrating hyporesponsiveness.

Table 2. Immune responses to pneumococcal serotype 3.

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