COMBINATION OF PASSIVE AND ACTIVE IMMUNIZATION IN HONEYBEE VENOM IMMUNOTHERAPY
COMBINATION OF PASSIVE AND ACTIVE IMMUNIZATION IN HONEYBEE VENOM IMMUNOTHERAPY
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DOI:
10.1016/0091-6749(87)90245-4
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发表时间:
1987-06-01
影响因子:
14.2
通讯作者:
MICHEL, FB
中科院分区:
文献类型:
--
作者:
BOUSQUET, J;FONTEZ, A;MICHEL, FB
Immunotherapy with honeybee venom (HBV) is effective under optimal conditions, but many untoward systemic reactions are observed when venom doses are increased, especially with rush protocols. Although there were large interpatient variations, the levels of serum bee venom specific IgG were found to significantly correlate with the protection of the allergic patients. A double-blind, placebo-controlled study was carried out to determine whether passive immunization with fractionated IgG from a beekeeper''s serum pool was able (1) to protect patients undergoing a rush immunotherapy program with HBV against untoward systemic reactions, and (2) to observe if the active immunization with HBV could elicit an active IgG immune response toward venom allergens. Hyperimmune IgG was obtained from a pool of sera of beekeepers (Cohn fractions II to III) that was subsequently treated with pepsin for intravenous use. All IgG subclasses were found to be present in the preparation. Twenty-seven patients, highly allergic to HBV, were randomly allocated to two treatment groups. Twenty patients received 10 to 15 gm of fractionated IgG, and seven other patients received saline in a double-blind fashion. The next day, a 3-hour rush protocol attempted to reach a cumulative venom dose of 200 .mu.g; 16/20 patients who received the fractionated IgG reached this dose without any systemic reaction, whereas none of the seven subjects who received saline could attain it, and all patients had a systemic reaction. The active immunization with HBV elicited a significant (p < 0.05; Wilcoxon W Test) increase in venom IgG after 1 week of treatment in the patients who reached the maintenance dose. Venom IgG was subsequently increased in this group. In the group of patients who received saline, a similar increase in venom IgG was observed; 21/27 patients were stung by honeybees between 3 weeks and 2 months after the maintenance dose had been reached. None of the patients had a systemic reaction. Passive immunization with IgG was demonstrated to protect, significantly, patients against systemic reactions of active immunotherapy, and the combination of passive and active immunotherapy can be used as an alternative when patients develop an allergic reaction close to the bee season.