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Acute urinary tract infection elicits bladder afferent hypersensitivity
Harman Sharma1, Sarah K Manning2, Natalie E Stevens1,3
1Flinders Health and Medical Research Institute, Flinders University, Bedford Park, SA, Australia.
Brain, Behavior, & Immunity - Health
|February 4, 2025
Summary
Urinary tract infections (UTIs) cause hypersensitive bladder nerves, leading to pain and dysfunction. Understanding these bladder afferent nerves is key to managing UTI-related sensory and behavioral changes.
Area of Science:
- Neuroscience
- Urology
- Physiology
Background:
- Painful bladder sensations are a common symptom of urinary tract infections (UTIs).
- The neurophysiological mechanisms driving these sensations remain incompletely understood.
Purpose of the Study:
- To investigate the neurophysiology of bladder afferent hypersensitivity during UTI.
- To determine the role of bladder afferents in sensory and behavioral responses to UTI.
Main Methods:
- Explored neurophysiological changes in bladder afferents during UTI.
- Assessed afferent responses to bladder distension at varying pressures.
Main Results:
- UTI induced significant hypersensitivity in bladder afferents during distension.
- Low-threshold afferents showed exaggerated responses even at normal bladder pressures.
- This afferent hypersensitivity correlated with the development of bladder dysfunction.
Conclusions:
- Bladder afferents are critically involved in regulating sensory and behavioral outcomes of UTI.
- Targeting bladder afferent hypersensitivity may offer therapeutic strategies for UTI-related bladder pain and dysfunction.
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