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Human cervical mucus. I. Rheologic characteristics.

D P Wolf, L Blasco, M A Khan

    Fertility and Sterility
    |January 1, 1977
    PubMed
    Summary
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    Human cervical mucus viscoelasticity, measured by microrheometry, depends on nondialyzable solids (NDS). Procedures were developed to normalize NDS for accurate comparative studies of mucus properties.

    Area of Science:

    • Biophysics
    • Reproductive Biology
    • Materials Science

    Background:

    • Human cervical mucus exhibits complex viscoelastic properties crucial for reproductive processes.
    • Understanding these properties requires precise measurement techniques sensitive to compositional variations.

    Purpose of the Study:

    • To characterize the viscoelastic properties of human cervical mucus using microrheometry.
    • To investigate the influence of nondialyzable solids (NDS) concentration on mucus viscoelasticity.
    • To develop and validate methods for normalizing NDS in mucus samples for comparative analysis.

    Main Methods:

    • Microrheometry was employed to measure the viscoelastic properties of fresh human cervical mucus.
    • Cervical mucus samples were analyzed for rheological heterogeneity and stability under ambient storage conditions.
    Keywords:
    BiologyCervical Mucus--analysisCervixClinical ResearchFamily Planning, Behavioral MethodsGenitaliaGenitalia, FemaleMenstrual CycleMenstruationPhysiologyReproductionResearch MethodologyUrogenital SystemUterus

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  • Procedures for mucus reconstitution and viscoelasticity data normalization to a standard NDS concentration (2.5%) were developed and tested.

    • Main Results:

    • Human cervical mucus demonstrated rheological heterogeneity, linked to in situ compositional differences.
    • Mucus viscoelasticity remained stable for several hours at ambient temperature.
    • Mucus viscoelasticity was found to be highly dependent on nondialyzable solids (NDS) concentration.

    Conclusions:

    • Microrheometry provides a sensitive method for characterizing cervical mucus viscoelasticity.
    • Normalization of NDS concentration is essential for accurate comparative studies of cervical mucus.
    • The developed normalization procedures are valid for analyzing mucus across different phases of the menstrual cycle.