Voluntary wheel running attenuates urinary bladder hypersensitivity and dysfunction following neonatal maternal separation in female mice

Neurourology and Urodynamics
Angela N PierceJulie A Christianson

Abstract

Patients with interstitial cystitis/painful bladder syndrome (IC/PBS) commonly suffer from widespread pain and mood disorder, which has been attributed to improper functioning of the hypothalamic-pituitary-adrenal (HPA) axis. Voluntary exercise has been shown to improve HPA axis function, therefore we are determining whether voluntary wheel running can attenuate urological pain and dysfunction following neonatal maternal separation (NMS) in female mice. Mice underwent NMS for 3 h/day from postnatal Day 1-21, were caged with free access to running wheels at 4 weeks of age, and assessed 4 weeks later for bladder sensitivity, micturition, reward behavior, mast cell degranulation, and HPA axis-related in vitro analysis. Increased bladder sensitivity, void frequency, and mast cell degranulation was observed in adult sedentary (-Sed) NMS mice, compared to naïve-Sed controls. Sucrose preference was increased in NMS-Sed mice and corticotropin-releasing factor receptor 1 (CRF1 ) and glucocorticoid receptor mRNA levels were significantly reduced in the hippocampus. Exercise normalized bladder sensitivity, micturition output, and increased brain-derived neurotrophic factor (BDNF) mRNA levels in the hippocampus of NMS mice. Mast cell degra...Continue Reading

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Citations

Aug 14, 2021·International Journal of Urology : Official Journal of the Japanese Urological Association·Takahiro ShimizuMotoaki Saito

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