1
|
Effects of β3-adrenoceptor agonist on acute urinary retention in a rat model. World J Urol 2021; 39:4427-4433. [PMID: 34304275 DOI: 10.1007/s00345-021-03774-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/21/2021] [Indexed: 11/27/2022] Open
Abstract
PURPOSE To investigate the protective effect of mirabegron on bladder dysfunction in an acute urinary retention rat model. MATERIALS AND METHODS Thirty-six 16-week Sprague-Dawley rats were assigned to the mirabegron and normal saline (N/S) groups. Each group of eighteen was divided into sub-groups of 6 for 30 min, 2 h, and 24 h. They were administered mirabegron (10 mg/kg) and N/S daily for 4 weeks, respectively. Mirabegron and N/S groups were divided into sub-groups of 6 rats for 30 min, 2 h, and 24 h. The changes in bladder blood flow were measured using laser Doppler (moorVMS-LDF2). Histopathological examination of the bladder and nitric oxide (NO) measurement were performed. RESULT During the urinary retention phase in the mirabegron group, it showed higher and rapider recovery of blood flow; the lowest at 19.5% ± 3.68% at 3 min, a significant recovery from the lowest value as 23.7 ± 3.4% at 10 min, than that in the N/S group; 15.1 ± 1.84% at 5 min, 23.7 ± 3.4% at 20 min, respectively (P < 0.05). At 30 min, 120 min, and 24 h after reperfusion, the recovery of blood flow in the mirabegron group was significantly higher than that in the N/S group (mirabegron: 41.1 ± 1.7%, 59.9 ± 7.2%, and 89.7 ± 4.4%, N/S: 31.3 ± 2.1%, 47.3 ± 4.5%, 83.9 ± 3.6%, respectively (P < 0.05)). NO levels tended to be higher in the mirabegron group; however, the difference was not statistically significant. Histological examination revealed that the mirabegron group showed recovery close to normal tissue after 24 h. CONCLUSIONS In an acute urinary retention rat model, mirabegron maintained and restored higher bladder blood flow, resulting in protective and recovery effect after acute urinary retention.
Collapse
|
2
|
Urinary Dysfunction after Hysterectomy: Incidence, Risk Factors and Management. CURRENT BLADDER DYSFUNCTION REPORTS 2017. [DOI: 10.1007/s11884-017-0442-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
3
|
A Chinese Medicine Formula "Xian-Jia-Tang" for Treating Bladder Outlet Obstruction by Improving Urodynamics and Inhibiting Oxidative Stress through Potassium Channels. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:8147258. [PMID: 28567099 PMCID: PMC5414489 DOI: 10.1155/2017/8147258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 03/09/2017] [Indexed: 11/19/2022]
Abstract
The aim of this study is to investigate efficacy of a traditional Chinese medicine formula (named Xian-Jia-Tang, XJT) on bladder outlet obstruction (BOO) in rats and explore its mechanisms. Total 80 BOO model rats were established and randomly divided into 4 groups: physiological saline, XJT, Cesium Chloride (CC), and XJT and CC groups. Meanwhile, 12 rats were used as normal control. Bladder weight and urodynamics were measured. Oxidative stress level and mRNA expressions of potassium channels gene were detected in detrusor. The mRNA and protein levels of hypoxia inducible factor-α (HIF-α) in detrusor were detected by RT-PCR and Western blot. BOO model rats showed significantly higher bladder weight and abnormal urodynamics. XJT significantly improved the abnormal urodynamics and inhibited the oxidative stress and changes of mRNA levels of potassium channels genes in detrusor of BOO model rats. Moreover, KATP and SK2/3 mRNA were overexpressed in BOO model rats treated by XJT. Besides, the significantly increased levels of HIF-α mRNA and protein were also inhibited by XJT. However, these inhibition effects of XJT were weakened by CC. XJT could effectively improve the urodynamics and inhibit the oxidative stress caused by hypoxia through suppressing the role of potassium channels in BOO model rats.
Collapse
|
4
|
Wang CC, Lee CL, Kuo HC. Efficacy and Safety of Intravesical OnabotulinumtoxinA Injection in Patients with Detrusor Hyperactivity and Impaired Contractility. Toxins (Basel) 2016; 8:toxins8030082. [PMID: 26999209 PMCID: PMC4810227 DOI: 10.3390/toxins8030082] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/07/2016] [Accepted: 03/11/2016] [Indexed: 11/16/2022] Open
Abstract
We investigated the efficacy and safety of intravesical onabotulinumtoxinA injection in patients with detrusor hyperactivity and impaired contractility (DHIC). Twenty-one patients with urodynamically proven DHIC and 21 age-matched patients with overactive bladder (OAB) with urodynamic detrusor overactivity were treated with intravesical injections of 100 U of onabotulinumtoxinA. The overactive bladder symptom score, urgency severity score, patient perception of bladder condition, global response assessment, voiding diary, and procedure-related adverse events (AE) at baseline, two weeks, one, three, and six months after treatment were assessed. The results showed that the subjective symptom scores improved significantly in both groups, and the scores did not differ between the groups. The decrease in urgency episodes and urgency urinary incontinence were noted in OAB patients but not in DHIC patients. Although the incidence of AEs was comparable between the groups, the therapeutic efficacy lasted for a mean of 4.9 ± 4.8 months in DHIC patients and 7.2 ± 3.3 months in OAB patients (p = 0.03). We concluded that the efficacy of intravesical onabotulinumtoxinA injection for DHIC patients was limited and short-term. Nevertheless, AEs did not increase in DHIC. Intravesical onabotulinumtoxinA might not be a good indication in patients with DHIC and high post-voiding residual urine. Physicians should inform patients of the potential benefits and risks of onabotulinumtoxinA injection for treatment of DHIC.
Collapse
Affiliation(s)
- Chung-Cheng Wang
- Department of Urology, En Chu Kong Hospital, College of Medicine, National Taiwan University, Taipei 23702, Taiwan.
- Department of Biomedical Engineering, Chung Yuan Christian University, Chung-Li 32023, Taiwan.
| | - Cheng-Ling Lee
- Department of Urology, Buddhist Tzu Chi General Hospital, and Tzu Chi University, Hualien 97002, Taiwan.
| | - Hann-Chorng Kuo
- Department of Urology, Buddhist Tzu Chi General Hospital, and Tzu Chi University, Hualien 97002, Taiwan.
| |
Collapse
|
5
|
Tinay I, Sener TE, Cevik O, Cadirci S, Toklu H, Cetinel S, Sener G, Tarcan T. Antioxidant Agent Quercetin Prevents Impairment of Bladder Tissue Contractility and Apoptosis in a Rat Model of Ischemia/Reperfusion Injury. Low Urin Tract Symptoms 2015; 9:117-123. [PMID: 28394499 DOI: 10.1111/luts.12125] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/27/2015] [Accepted: 09/27/2015] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To examine the possible protective effect of quercetin (QT), which is well known for its antioxidant and protective effects in circumstances of oxidative stress, on urinary bladder tissue in a rat model of ischemia/reperfusion (I/R) injury, which is a known factor for the development of lower urinary tract dysfunction partly mediated by the generation of free radicals causing oxidative damage. METHODS Thirty male Sprague-Dawley rats were subjected to I/R injury through clamping the abdominal aorta for 30 min and then allowing reperfusion for the next 60 min. Quercetin (20 mg/kg; subcutaneously) or vehicle were given before ischemia and just before reperfusion. Findings of the isometric contraction studies in the organ bath and of the histological examinations along with oxidative stress markers were evaluated in bladder tissues. RESULTS Increased malondialdehyde (MDA) levels and myeloperoxidase (MPO) activities and decreased glutathione (GSH) levels and superoxide dismutase (SOD) activities in the I/R group were reduced by QT treatment. In the I/R group, pro-apoptotic marker caspase-3 was increased and anti-apoptotic bcl-2 protein was decreased, while QT treatment significantly reversed these parameters. In the I/R group contractile responses of the bladder strips to carbachol were significantly lower than those of the control group, which were reversed by QT treatment. CONCLUSION Quercetin treatment protects bladder tissue contractility against acute I/R injury by decreasing oxidative stress and apoptosis induced by I/R.
Collapse
Affiliation(s)
- Ilker Tinay
- Department of Urology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Tarik E Sener
- Department of Urology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Ozge Cevik
- Department of Biochemistry, School of Pharmacy, Cumhuriyet University, Sivas, Turkey
| | - Selin Cadirci
- Department of Pharmacology, School of Pharmacy, Marmara University, Istanbul, Turkey
| | - Hale Toklu
- Department of Pharmacology, School of Pharmacy, Marmara University, Istanbul, Turkey
| | - Sule Cetinel
- Department of Histology & Embryology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Göksel Sener
- Department of Pharmacology, School of Pharmacy, Marmara University, Istanbul, Turkey
| | - Tufan Tarcan
- Department of Urology, School of Medicine, Marmara University, Istanbul, Turkey
| |
Collapse
|
6
|
Organ-Protective Effects of Red Wine Extract, Resveratrol, in Oxidative Stress-Mediated Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:568634. [PMID: 26161238 PMCID: PMC4487914 DOI: 10.1155/2015/568634] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 10/09/2014] [Indexed: 12/25/2022]
Abstract
Resveratrol, a polyphenol extracted from red wine, possesses potential antioxidative and anti-inflammatory effects, including the reduction of free radicals and proinflammatory mediators overproduction, the alteration of the expression of adhesion molecules, and the inhibition of neutrophil function. A growing body of evidence indicates that resveratrol plays an important role in reducing organ damage following ischemia- and hemorrhage-induced reperfusion injury. Such protective phenomenon is reported to be implicated in decreasing the formation and reaction of reactive oxygen species and pro-nflammatory cytokines, as well as the mediation of a variety of intracellular signaling pathways, including the nitric oxide synthase, nicotinamide adenine dinucleotide phosphate oxidase, deacetylase sirtuin 1, mitogen-activated protein kinase, peroxisome proliferator-activated receptor-gamma coactivator 1 alpha, hemeoxygenase-1, and estrogen receptor-related pathways. Reperfusion injury is a complex pathophysiological process that involves multiple factors and pathways. The resveratrol is an effective reactive oxygen species scavenger that exhibits an antioxidative property. In this review, the organ-protective effects of resveratrol in oxidative stress-related reperfusion injury will be discussed.
Collapse
|
7
|
Patra PB, Patra S. Research Findings on Overactive Bladder. Curr Urol 2015; 8:1-21. [PMID: 26195957 PMCID: PMC4483299 DOI: 10.1159/000365682] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 01/09/2014] [Indexed: 12/19/2022] Open
Abstract
Several physiopathologic conditions lead to the manifestation of overactive bladder (OAB). These conditions include ageing, diabetes mellitus, bladder outlet obstruction, spinal cord injury, stroke and brain injury, Parkinson's disease, multiple sclerosis, interstitial cystitis, stress and depression. This review has discussed research findings in human and animal studies conducted on the above conditions. Several structural and functional changes under these conditions have not only been observed in the lower urinary tract, but also in the brain and spinal cord. Significant changes were observed in the following areas: neurotransmitters, prostaglandins, nerve growth factor, Rho-kinase, interstitial cells of Cajal, and ion and transient receptor potential channels. Interestingly, alterations in these areas showed great variation in each of the conditions of the OAB, suggesting that the pathophysiology of the OAB might be different in each condition of the disease. It is anticipated that this review will be helpful for further research on new and specific drug development against OAB.
Collapse
Affiliation(s)
- Phani B. Patra
- King of Prussia, Drexel University College of Medicine, Philadelphia, Pa., USA
| | - Sayani Patra
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pa., USA
| |
Collapse
|
8
|
Erkanli Senturk G, Erkanli K, Aydin U, Yucel D, Isiksacan N, Ercan F, Arbak S. The protective effect of oxytocin on ischemia/reperfusion injury in rat urinary bladder. Peptides 2013; 40:82-8. [PMID: 23262359 DOI: 10.1016/j.peptides.2012.12.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/05/2012] [Accepted: 12/05/2012] [Indexed: 11/30/2022]
Abstract
Oxytocin (OXY), a well-known nonapeptide, plays a crucial role in reproduction, and has effects on modulating the immune and inflammatory processes in living organisms as well. Recently it is also known as an antioxidant in several organs. The present study aims to demonstrate the protective effect of OXY against ischemia/reperfusion (I/R) injury in urinary bladder tissue. Abdominal aorta of rats, were clamped to perform urinary bladder ischemia. OXY (0.5 μg/kg) was injected intraperitoneally before ischemia in I/R+OXY group, whereas the vehicle solution was injected to I/R group. At the end of reperfusion, tissue samples from urinary bladder were processed for histochemical, ultrastructural and biochemical analysis. Tissue sections were stained by toluidine blue for mast cell counting and hematoxylin-eosin for histopathology. In addition, malondialdehyde (MDA) and glutathione (GSH) levels were determined biochemically. The results demonstrated that there was an extreme damage at urothelium, dilatation of intercellular junctions, inflammatory cell infiltration in I/R group. I/R+OXY group demonstrated a reduction in the severity of urinary bladder damage. According to mast cell counting results, both granulated and degranulated mast cells were decreased in I/R+OXY group compared to I/R group. The mean MDA level was higher in I/R group compared to control and lower in I/R+OXY group compared to I/R group. GSH level reduced in I/R group compared to the control and increased in I/R+OXY group compared to I/R group. In conclusion, oxytocin, as confirmed by histological evaluation and biochemical assays has a potential protective effect in the urinary bladder tissue against ischemia/reperfusion injury.
Collapse
Affiliation(s)
- G Erkanli Senturk
- Acibadem University, School of Medicine, Department of Histology and Embryology, Istanbul, Turkiye.
| | | | | | | | | | | | | |
Collapse
|
9
|
Li WJ, Shin MK, Oh SJ. Time dependent bladder apoptosis induced by acute bladder outlet obstruction and subsequent emptying is associated with decreased MnSOD expression and Bcl-2/Bax ratio. J Korean Med Sci 2010; 25:1652-6. [PMID: 21060756 PMCID: PMC2967004 DOI: 10.3346/jkms.2010.25.11.1652] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Accepted: 06/11/2010] [Indexed: 12/12/2022] Open
Abstract
Ischemia/reperfusion (I/R) injury-induced oxidative stress plays an important role in the functional impairment of the bladder following acute bladder outlet obstruction (BOO) via induction of apoptosis. The purpose of this study was to investigate the time course of the bladder apoptosis, and apoptosis related molecular changes in the early stage of acute BOO. Twelve-week-old male Sprague Dawley rats were divided into control, acute BOO only (I), and acute BOO plus subsequent emptying (I/R) for 30, 60, 120 min, 3 days and 2 weeks. We examined the extent of bladder apoptosis, expression of Mn-superoxide dismutase (Mn-SOD), Bcl-2, Bax, caspase 3 and poly (ADP-ribose) (PAR) in the bladder. Bladder apoptosis was significantly increased in the I/R group at 30, 60, and 120 min following bladder emptying. BOO plus subsequent emptying for 30, 60, 120 min showed significant decrease in MnSOD and Bcl-2 expression, and significant increase in caspase 3, Bax expression, and amounts of PAR. These results indicate that bladder apoptosis, induced by acute BOO and subsequent emptying, is associated with decreased MnSOD expression, increased PARP activity and imbalance in apoptosis pathways.
Collapse
Affiliation(s)
- Wen Ji Li
- Department of Urology, Seoul National University Hospital, and Neuroscience Research Institute, Medical Research Center, Seoul National University, Seoul, Korea
| | - Mi-Kyung Shin
- Department of Pharmacology, Center for Advanced Medical Education, Inha University College of Medicine, BK-21 Project, MTRC, Inha Research Institute for Medical Science, Inha University, Incheon, Korea
| | - Seung-June Oh
- Department of Urology, Seoul National University Hospital, and Neuroscience Research Institute, Medical Research Center, Seoul National University, Seoul, Korea
| |
Collapse
|
10
|
Differential effects of coenzyme Q10 and α-lipoic acid on two models of in vitro oxidative damage to the rabbit urinary bladder. Int Urol Nephrol 2010; 43:91-7. [DOI: 10.1007/s11255-010-9771-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 05/18/2010] [Indexed: 10/19/2022]
|