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2002 NOV 13 - (NewsRx.com & NewsRx.net) -- by Maria G. Essig, MS, ELS, senior medical writer - A subcutaneous booster injection of tetanus toxoid increased levels of tetanus toxoid-specific antibodies in serum but not in saliva, according to investigators in Sweden.
Per-Erik Engstrom and colleagues at Huddinge University Hospital in Stockholm measured serum, parotid saliva, and whole saliva levels of specific IgA antibodies against tetanus toxoid in 14 healthy subjects at baseline and 1, 6, and 12 months after subcutaneous booster immunization with tetanus toxoid and diphtheria vaccine (Duplex).
One month after the booster, tetanus-toxoid-specific IgA1 antibodies increased by 2.6 times and specific IgA2 antibodies increased by 2.7 times in serum, compared with baseline levels. In contrast, no changes occurred in parotid or whole saliva levels of specific IgA subclass antibodies against tetanus toxoid.
Parotid saliva contained a greater percentage of specific IgA antibodies than did whole saliva, with a ratio of antigen-specific IgA to total IgA antibodies 3 to 10 times greater in parotid saliva compared with whole saliva (Specific IgA subclass responses in serum and saliva: a 12-month follow-up study after parenteral booster immunization with tetanus toxoid. Acta Odontologica Scandinavica, 2002;60(4):198-202).
"In conclusion, subcutaneous ...