How Mucus Changes at the Nanoscale
Author Information
Author(s): Lai Samuel K., Wang Ying-Ying, Cone Richard, Wirtz Denis, Hanes Justin
Primary Institution: The Johns Hopkins University
Hypothesis
The nonionic detergent nonoxynol-9 (N9) alters the structure and rheology of cervicovaginal mucus (CVM).
Conclusion
N9 treatment significantly changes the nanoscale mechanical properties of CVM without affecting its bulk rheological properties.
Supporting Evidence
- CVM transitions from an impermeable elastic barrier to a highly permeable viscoelastic liquid at different particle sizes.
- N9 treatment increased the viscoelastic moduli for 200 and 500 nm beads but did not affect 100 nm beads.
- The bulk rheology of CVM was minimally changed upon N9 treatment.
Takeaway
Mucus can change how it behaves at tiny scales, and a common ingredient in lubricants can make it act differently without changing how it works overall.
Methodology
The study used microrheology techniques to measure the viscoelastic properties of cervicovaginal mucus with and without N9 treatment.
Limitations
The study focused on a specific concentration of N9 and may not represent all conditions of mucus behavior.
Participant Demographics
Cervicovaginal mucus was collected from female donors with healthy vaginal flora.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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