Inflammation and Healing in the Rectal Mucosa of Men Who Have Sex with Men
Author Information
Author(s): Van Doren Vanessa E., Ackerley Cassie G., Arthur Robert A., Murray Phillip M., Smith S. Abigail, Hu Yi-Juan, Kelley Colleen F.
Primary Institution: Emory University
Hypothesis
The rectal mucosa among MSM engaging in receptive anal intercourse will exhibit a distinct inflammatory response and unique microbiome perturbations after mucosal injury.
Conclusion
MSM engaging in receptive anal intercourse showed higher levels of inflammation and a distinct microbiome compared to controls, which may influence HIV transmission risk.
Supporting Evidence
- MSM-RAI had significantly higher concentrations of pro-inflammatory cytokines compared to controls.
- Wound healing was numerically faster in MSM-RAI but did not reach statistical significance.
- Distinct microbiome differences were observed between MSM-RAI and controls.
Takeaway
This study looked at how injuries to the rectal lining affect inflammation and healing in men who have sex with men, finding that those who engage in receptive anal intercourse have more inflammation.
Methodology
The study involved collecting rectal secretions and measuring cytokine levels and wound healing in MSM who engage in receptive anal intercourse and controls without HIV.
Potential Biases
Potential confounders include PrEP use and the biosocial effects of race/racism.
Limitations
The study had a modest sample size and lacked statistical power to assess many possible interactions.
Participant Demographics
19 MSM-RAI (ages 21-54) and 6 controls (ages 23-46), with a notable racial composition.
Statistical Information
P-Value
0.09
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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