Abstract
Purpose: Sexually active adolescent girls are uniquely vulnerable to sexually transmitted disease, including cervical cancer and AIDS. Little is known about the development of genital immunity in adolescents. Secretory IgA (sIgA) in cervical mucus is an important component of genital immunity. We studied sIgA levels in cervical mucus samples for both adolescent and adult females. Methods: Samples were collected in a university-based adolescent medicine clinic and a university student health center. Participants consisted of 13 sexually active adolescent girls and fourteen adult controls. Samples were collected in the course of routine pelvic exams. All subjects were at least two years post menarche. Mucus was aspirated directly from the cervical os. Diluted samples were liquefied with a proteolytic enzyme (bromelain). Secretory IgA levels were measured by radial immunodiffusion using IgA 2 from pooled human plasma as a standard. Results: Secretory IgA levels for the adolescent group (mean 0.157 g/L SD 0.080) were slightly lower than for the adult group mean (0.199 g/L SD 0.130) although not statistically significant. Conclusions: Cervical sIgA levels were comparable between sexually active adolescents and adults.
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