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Erschienen in: International Urology and Nephrology 1/2024

05.09.2023 | Urology - Original Paper

Effects of low-intensity extracorporeal shock wave therapy on lipopolysaccharide cystitis in a rat model of interstitial cystitis/bladder pain syndrome

verfasst von: Naohisa Kusakabe, Tadanobu Chuyo Kamijo, Naoki Wada, Hiroki Chiba, Nobuo Shinohara, Minoru Miyazato

Erschienen in: International Urology and Nephrology | Ausgabe 1/2024

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Abstract

Purpose

To investigate the effect of low-intensity extracorporeal shock wave therapy (LiESWT) on lipopolysaccharide (LPS)-induced cystitis in an animal model of interstitial cystitis/bladder pain syndrome (IC/BPS).

Methods

Sprague–Dawley rats were divided into three groups: control, cystitis (LPS group, intravesical injection of LPS (1 mg) twice), and cystitis with LiESWT (LiESWT group). On the third and fourth days, LiESWT was administered (0.12 mJ/mm2, 300 shots each time) on the lower abdomen toward the bladder. On the seventh day, the rats underwent pain assessment and a metabolic cage study. Subsequently, a continuous cystometrogram (CMG) was performed under urethane anaesthesia. Immunohistochemical studies were also performed, including S-100 staining, an immunohistochemical marker of Schwann cells in the bladder.

Results

In the LPS group, the pain threshold in the lower abdomen was significantly lower than that in the control group. In the metabolic cage study, the mean voided volume in the LPS group significantly increased. The CMG also revealed a significant decrease in bladder contraction amplitude, compatible with detrusor underactivity in the LPS group. Immunohistochemical studies showed inflammatory changes in the submucosa, increased fibrosis, and decreased S-100 stain-positive areas in the muscle layer of the LPS group. In the LiESWT group, tactile allodynia and bladder function were ameliorated, and S-100 stain-positive areas were increased.

Conclusion

By restoring nerve damage, LiESWT improved lower abdominal pain sensitivity and bladder function in an LPS-induced cystitis rat model. This study suggests that LiESWT may be a new therapeutic modality for IC/BPS.
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Metadaten
Titel
Effects of low-intensity extracorporeal shock wave therapy on lipopolysaccharide cystitis in a rat model of interstitial cystitis/bladder pain syndrome
verfasst von
Naohisa Kusakabe
Tadanobu Chuyo Kamijo
Naoki Wada
Hiroki Chiba
Nobuo Shinohara
Minoru Miyazato
Publikationsdatum
05.09.2023
Verlag
Springer Netherlands
Erschienen in
International Urology and Nephrology / Ausgabe 1/2024
Print ISSN: 0301-1623
Elektronische ISSN: 1573-2584
DOI
https://doi.org/10.1007/s11255-023-03770-3

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