scholarly journals The effect of a free radical scavenger on oxidation stress in partial bladder outlet obstruction and its relief in a rat model

2018 ◽  
Author(s):  
Min Soo Choo ◽  
SongZhe Piao ◽  
Seung-June Oh
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
Rat Model ◽  
Bladder Outlet Obstruction ◽  
Outlet Obstruction ◽  
Free Radical Scavenger ◽  
Radical Scavenger ◽  
Detrusor Muscle ◽  
Oxidation Stress ◽  
Partial Bladder Outlet Obstruction

AbstractAIMSTo investigate the effect of a free radical scavenger (tempol) after relief of partial bladder outlet obstruction (pBOO) on bladder function in a rat model.METHODSpBOO was induced in 50 eight-week-old female Sprague-Dawley rats and relieved 3 weeks later. The rats were divided randomly into 5 groups: sham-operated, tempol-treated for 1 week (Treat-1w) or 3 weeks (Treat-3w), and no treatment for 1 week (nonTreat-1w) or 3 weeks (nonTreat-3w). Awaken cystometrograms were obtained 1 or 3 weeks after relief according to the grouping. The bladders were isolated and weighed. H&E, Masson’s trichrome and TUNEL staining were used to analyze histological changes. The oxidative stress assessed using malondialdehyde. The expression of beta-3 adrenoreceptor was examined by Western blotting.RESULTSThe tempol-treated groups exhibited a significant decrease in the number of IDCs per voiding cycle (nonTreat-1w vs. Treat-1w, 1.18±0.82 vs. 0.36±0.40, P=0.010; nonTreat-3w vs. Treat-3w, 1.51±0.69 vs. 0.23±0.25, P=0.002). The thickness and collagen fiber deposition of the detrusor muscle layer was significantly decreased in the treated groups. Apoptosis detected was mainly observed in the urothelial cell layer, although the rate of apoptosis was significantly decreased in the treated groups (48.9±3.36% vs. 32.7±11.10%, P=0.024; 25.8±4.67% vs. 15.7±9.83%, P=0.314). The tempol-treated groups showed significant decreases in the MDA concentrations at both 1 and 3 weeks after relief. The expression of the beta-3 adrenoreceptor was increased in the tempol-treated rats.CONCLUSIONSIschemic reperfusion injury after relief of pBOO caused histological and functional changes in the bladder. Free radical scavenger treatment prevented this oxidative stress.

Suppression of Bladder Oxidative Stress and Inflammation by a Phytotherapeutic Agent in a Rat Model of Partial Bladder Outlet Obstruction

2009 ◽  
Vol 182 (1) ◽  
pp. 382-390 ◽  
Author(s):  
Michiko Oka ◽  
Tomomi Fukui ◽  
Makoto Ueda ◽  
Mitsuhiro Tagaya ◽  
Tatsuya Oyama ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Rat Model ◽  
Bladder Outlet Obstruction ◽  
Outlet Obstruction ◽  
Partial Bladder Outlet Obstruction

scholarly journals Human Urine-derived Stem Cells Improve Partial Bladder Outlet Obstruction in Rats: Preliminary Data and microRNA-mRNA Expression Profile

2021 ◽  
Author(s):  
Menjiang Tu ◽  
Rui Wang ◽  
Pei Zhu ◽  
Qingqing Wang ◽  
Bishao Sun ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Bladder Outlet Obstruction ◽  
Bioinformatics Analysis ◽  
Therapy Group ◽  
Expression Profiles ◽  
Outlet Obstruction ◽  
Bladder Function ◽  
Detrusor Muscle ◽  
Bladder Tissue ◽  
Partial Bladder Outlet Obstruction

Abstract Background: Partial bladder outlet obstruction (pBOO), a common urological disease, often results in bladder tissue inflammation and remodeling. Human urine-derived stem cells (USCs) have demonstrated therapeutic benefits in various organ injury models. We used a rat model of pBOO to investigate the effect of USCs on bladder function and to explore the miRNA and gene expression profiles in bladder tissue using RNA sequencing.Methods: In total, 18 rats were randomly and evenly assigned to the following three groups: a sham surgery group, a pBOO without USC therapy group, and a pBOO with USC therapy group (subjected to treatment with USCs six times every other week). All rats were subjected to routine urodynamic monitoring. Detrusor muscle strips were analyzed and pathophysiology was assessed. Finally, altered miRNA and mRNA expression profiles of bladder tissue were examined using RNA sequencing and bioinformatics analysis technology.Results: After USC treatment, urodynamic monitoring revealed elevated bladder compliance and maximal voiding pressure, declined end filling pressure and voided volume, and improved detrusor muscle contractility and carbachol sensitivity in pBOO rats. Histology and TUNEL assay revealed reduced collagen deposition and muscle cell apoptosis in bladder tissue. The differential expression of eight miRNAs in pBOO rats was reversed by USC treatment. Bioinformatics analysis helped identify miR-142 and miR-9a as the two largest nodes of differentially expressed miRNAs in the miRNA‑gene interaction network in the USC-treated group. The Kyoto Encyclopedia of Genes and Genomes analysis revealed enrichment of multiple significant pathways, including those involved in necroptosis and cytokine-cytokine receptor interactions.Conclusions: This is the first study to reveal the protective effect of USCs on bladder function and bladder remodeling in pBOO rats. The miRNA and mRNA expression levels differed in the bladder of pBOO rats with and without USC treatment. Although the mechanism underlying these effects has not been fully elucidated, necroptosis and cytokine-cytokine receptor interaction-related pathways may be involved.

scholarly journals Increased expression of 5-HT2A and 5-HT2B receptors in detrusor muscle after partial bladder outlet obstruction in rats

2015 ◽  
Vol 36 (3) ◽  
pp. 187-194 ◽  
Author(s):  
Mai MICHISHITA ◽  
Kazuo YANO ◽  
Ken-ichi KASAHARA ◽  
Ken-ichi TOMITA ◽  
Osamu MATSUZAKI
Keyword(s):  
Bladder Outlet Obstruction ◽  
Outlet Obstruction ◽  
Detrusor Muscle ◽  
Partial Bladder Outlet Obstruction

scholarly journals Differentially Expressed Genes Correlated with Fibrosis in a Rat Model of Chronic Partial Bladder Outlet Obstruction

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2219
Author(s):  
Yuan-Shuo Hsueh ◽  
Hui-Hua Chang ◽  
Shun-Yao Ko ◽  
Yi-Pai Lin ◽  
Wei-Yu Lin
Keyword(s):  
Differentially Expressed Genes ◽  
Rat Model ◽  
Bladder Outlet Obstruction ◽  
Outlet Obstruction ◽  
Clinical Problem ◽  
Differentially Expressed ◽  
Partial Bladder Outlet Obstruction ◽  
Bladder Weight ◽  
Gene Expression Alterations ◽  
Tgfb Signaling

Chronic partial bladder outlet obstruction (PBOO) is a prevalent clinical problem that may result from multiple etiologies. PBOO may be a secondary condition to various anatomical and functional abnormalities. Bladder fibrosis is the worst outcome of PBOO. However, gene alterations and the mechanism of fibrosis development after PBOO onset are not clear. Therefore, we aimed to investigate gene expression alterations during chronic PBOO. A rat model of PBOO was established and validated by a significant increase in rat bladder weight. The bladder samples were further analyzed by microarray, and differentially expressed genes (DEGs) that are more related to PBOO compared with the control genes were selected. The data showed that 16 significantly upregulated mRNAs and 3 significantly downregulated mRNAs are involved in fibrosis. Moreover, 13 significantly upregulated mRNAs and 12 significantly downregulated mRNAs are related to TGFB signaling. Twenty-two significantly upregulated mRNAs and nine significantly downregulated mRNAs are related to the extracellular matrix. The genes with differential expressions greater than four-fold included Grem1, Thbs1, Col8a1, Itga5, Tnc, Lox, Timp1, Col4a1, Col4a2, Bhlhe40, Itga1, Tgfb3, and Gadd45b. The gene with a differential expression less than a quarter-fold was Thbs2. These findings show the potential roles of these genes in the physiology of PBOO.

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