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  • Title: Comparative analysis of methods for collection and measurement of immunoglobulins in cervical and vaginal secretions of women.
    Author: Quesnel A, Cu-Uvin S, Murphy D, Ashley RL, Flanigan T, Neutra MR.
    Journal: J Immunol Methods; 1997 Mar 28; 202(2):153-61. PubMed ID: 9107304.
    Abstract:
    The purpose of this study was to systematically compare 3 collection methods, Sno-strips, wicks and cervical-vaginal lavage, for analysis of immunoglobulin concentrations in female genital secretions. In each of 8 women, absorbent wicks and Sno-strips were applied at 4 locations: the lateral wall of the vagina; the posterior vaginal fornix; the surface of the exocervix; and the endocervical canal. Cervical-vaginal lavage was then performed in 4 women with 5 ml PBS. Immunoglobulin and protein concentrations in lavage samples were generally over 100 times lower than in the secretions captured directly from mucosal surfaces with either Sno-strips or wicks. Capture of undiluted secretions with either wicks or Sno-strips allowed calculation of actual immunoglobulin concentrations at specific mucosal sites: for example, median IgA levels were consistently highest in the endocervix and lowest in the vagina. Such information may be crucial in evaluating the correlates of protective immunity against micro-organisms that infect or invade discrete regions of the genital mucosa.
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