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Oliveira AL, de Oliveira MG, Mónica FZ, Antunes E. Methylglyoxal and Advanced Glycation End Products (AGEs): Targets for the Prevention and Treatment of Diabetes-Associated Bladder Dysfunction? Biomedicines 2024; 12:939. [PMID: 38790901 PMCID: PMC11118115 DOI: 10.3390/biomedicines12050939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/11/2024] [Accepted: 04/17/2024] [Indexed: 05/26/2024] Open
Abstract
Methylglyoxal (MGO) is a highly reactive α-dicarbonyl compound formed endogenously from 3-carbon glycolytic intermediates. Methylglyoxal accumulated in plasma and urine of hyperglycemic and diabetic individuals acts as a potent peptide glycation molecule, giving rise to advanced glycation end products (AGEs) like arginine-derived hydroimidazolone (MG-H1) and carboxyethyl-lysine (CEL). Methylglyoxal-derived AGEs exert their effects mostly via activation of RAGE, a cell surface receptor that initiates multiple intracellular signaling pathways, favoring a pro-oxidant environment through NADPH oxidase activation and generation of high levels of reactive oxygen species (ROS). Diabetic bladder dysfunction is a bothersome urological complication in patients with poorly controlled diabetes mellitus and may comprise overactive bladder, urge incontinence, poor emptying, dribbling, incomplete emptying of the bladder, and urinary retention. Preclinical models of type 1 and type 2 diabetes have further confirmed the relationship between diabetes and voiding dysfunction. Interestingly, healthy mice supplemented with MGO for prolonged periods exhibit in vivo and in vitro bladder dysfunction, which is accompanied by increased AGE formation and RAGE expression, as well as by ROS overproduction in bladder tissues. Drugs reported to scavenge MGO and to inactivate AGEs like metformin, polyphenols, and alagebrium (ALT-711) have shown favorable outcomes on bladder dysfunction in diabetic obese leptin-deficient and MGO-exposed mice. Therefore, MGO, AGEs, and RAGE levels may be critically involved in the pathogenesis of bladder dysfunction in diabetic individuals. However, there are no clinical trials designed to test drugs that selectively inhibit the MGO-AGEs-RAGE signaling, aiming to reduce the manifestations of diabetes-associated bladder dysfunction. This review summarizes the current literature on the role of MGO-AGEs-RAGE-ROS axis in diabetes-associated bladder dysfunction. Drugs that directly inactivate MGO and ameliorate bladder dysfunction are also reviewed here.
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Affiliation(s)
| | | | | | - Edson Antunes
- Department of Translational Medicine, Pharmacology Area, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, SP, Brazil; (A.L.O.); (M.G.d.O.); (F.Z.M.)
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Xin M, Bi F, Wang C, Huang Y, Xu Y, Liang S, Cai T, Xu X, Dong L, Li T, Wang X, Fang Y, Xu Z, Wang C, Wang M, Song X, Zheng Y, Sun W, Li L. The circadian rhythm: A new target of natural products that can protect against diseases of the metabolic system, cardiovascular system, and nervous system. J Adv Res 2024:S2090-1232(24)00133-4. [PMID: 38631431 DOI: 10.1016/j.jare.2024.04.005] [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: 12/27/2023] [Revised: 03/17/2024] [Accepted: 04/07/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND The treatment of metabolic system, cardiovascular system, and nervous system diseases remains to be explored. In the internal environment of organisms, the metabolism of substances such as carbohydrates, lipids and proteins (including biohormones and enzymes) exhibit a certain circadian rhythm to maintain the energy supply and material cycle needed for the normal activities of organisms. As a key factor for the health of organisms, the circadian rhythm can be disrupted by pathological conditions, and this disruption accelerates the progression of diseases and results in a vicious cycle. The current treatments targeting the circadian rhythm for the treatment of metabolic system, cardiovascular system, and nervous system diseases have certain limitations, and the identification of safer and more effective circadian rhythm regulators is needed. AIM OF THE REVIEW To systematically assess the possibility of using the biological clock as a natural product target for disease intervention, this work reviews a range of evidence on the potential effectiveness of natural products targeting the circadian rhythm to protect against diseases of the metabolic system, cardiovascular system, and nervous system. This manuscript focuses on how natural products restore normal function by affecting the amplitude of the expression of circadian factors, sleep/wake cycles and the structure of the gut microbiota. KEY SCIENTIFIC CONCEPTS OF THE REVIEW This work proposes that the circadian rhythm, which is regulated by the amplitude of the expression of circadian rhythm-related factors and the sleep/wake cycle, is crucial for diseases of the metabolic system, cardiovascular system and nervous system and is a new target for slowing the progression of diseases through the use of natural products. This manuscript provides a reference for the molecular modeling of natural products that target the circadian rhythm and provides a new perspective for the time-targeted action of drugs.
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Affiliation(s)
- Meiling Xin
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China; National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China
| | - Fangjie Bi
- Heart Center, Zibo Central Hospital, Zibo, Shandong 255000, China
| | - Chao Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Yuhong Huang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Yujia Xu
- Department of Echocardiography, Zibo Central Hospital, Zibo, Shandong 255000, China
| | - Shufei Liang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Tianqi Cai
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Xiaoxue Xu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Ling Dong
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Tianxing Li
- National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China; Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Xueke Wang
- National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China; The Second Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Yini Fang
- National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China; Basic Medical College, Zhejiang Chinese Medical University, Hangzhou 310053 China
| | - Zhengbao Xu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Chao Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Meng Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China
| | - Xinhua Song
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China.
| | - Yanfei Zheng
- National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China.
| | - Wenlong Sun
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255000, China.
| | - Lingru Li
- National Institute of TCM Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing 100000, China.
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3
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Chen H, Hoi MPM, Lee SMY. Medicinal plants and natural products for treating overactive bladder. Chin Med 2024; 19:56. [PMID: 38532487 DOI: 10.1186/s13020-024-00884-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/02/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND Overactive bladder (OAB) presents a high prevalence of 16-18% worldwide. The pathophysiology of OAB is still poorly understood while effective therapy or countermeasure are very limited. On the other hand, medicinal plants and herbal remedies have been utilized for treating lower urinary tract symptoms (LUTS) in both Eastern and Western cultures since ancient times. In recent years, accumulating progress has also been made in OAB treatment research by using medicinal plants. METHODS Relevant literature on the studies of medicinal plants and herbs used to treat OAB was reviewed. The medicinal plants were summarized and categorized into two groups, single-herb medications and herbal formulations. RESULTS The present review has summarized current understanding of OAB's pathophysiology, its available treatments and new drug targets. Medicinal plants and natural products which have been used or have shown potential for OAB treatment were updated and comprehensively categorized. Studies on a wide variety of medicinal plants showed promising results, although only a few phytochemicals have been isolated and identified. Until now, none of these herbal compounds have been further developed into clinical therapeutics for OAB. CONCLUSIONS This review provides the basis for discovering and designing new phytopharmaceutical candidates with effective and well-tolerated properties to treat OAB. Increasing evidences indicate new strategies with alternative herbal treatment for OAB have high efficacy and safety, showing great promise for their clinical use. Future studies in a rigorously designed controlled manner will be beneficial to further support the eligibility of herbal treatment as OAB therapeutics.
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Affiliation(s)
- Huanxian Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China
| | - Maggie Pui Man Hoi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China
| | - Simon Ming Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China.
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China.
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China.
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Baek Y, Jeong EW, Lee HG. Encapsulation of resveratrol within size-controlled nanoliposomes: Impact on solubility, stability, cellular permeability, and oral bioavailability. Colloids Surf B Biointerfaces 2023; 224:113205. [PMID: 36801525 DOI: 10.1016/j.colsurfb.2023.113205] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/02/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023]
Abstract
This study examined the influence of the nanoliposomes (LPs) particle size on the solubility, antioxidant stability, in vitro release profile, Caco-2 cellular transport activity, cellular antioxidant activity, and in vivo oral bioavailability of resveratrol (RSV). LPs with sizes of 300, 150, and 75 nm were prepared using the thin-lipid film hydration method, followed by ultrasonication for 0, 2, and 10 min, respectively. Formulating small LPs (< 100 nm) was effective to enhance the solubility, in vitro release profile, cellular permeability, and cellular antioxidant activity of RSV. A similar pattern was observed for in vivo oral bioavailability. However, the size reduction of RSV-loaded LPs did not promote the antioxidant stability of RSV, owing to their large surface area used to interact with harsh environments. This study provides the better understanding of the appropriate particle size range of LPs to improve their in vitro and in vivo performances of RSV as an effective carrier for oral administration.
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Affiliation(s)
- Youjin Baek
- Department of Food and Nutrition, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea
| | - Eun Woo Jeong
- Department of Food and Nutrition, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea
| | - Hyeon Gyu Lee
- Department of Food and Nutrition, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea.
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Natural Polyphenols for Prevention and Treatment of Urinary Tract Infections. Int J Mol Sci 2023; 24:ijms24043277. [PMID: 36834683 PMCID: PMC9966151 DOI: 10.3390/ijms24043277] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Urinary tract infections (UTIs) are the second most common type of bacterial infection worldwide. UTIs are gender-specific diseases, with a higher incidence in women. This type of infection could occur in the upper part of the urogenital tract, leading to pyelonephritis and kidney infections, or in the lower part of the urinary tract, leading to less serious pathologies, mainly cystitis and urethritis. The most common etiological agent is uropathogenic E. coli (UPEC), followed by Pseudomonas aeruginosa and Proteus mirabilis. Conventional therapeutic treatment involves the use of antimicrobial agents, but due to the dramatic increase in antimicrobial resistance (AMR), this strategy has partially lost its therapeutic efficacy. For this reason, the search for natural alternatives for UTI treatment represents a current research topic. Therefore, this review summarized the results of in vitro and animal- or human-based in vivo studies aimed to assess the potential therapeutic anti-UTI effects of natural polyphenol-based nutraceuticals and foods. In particular, the main in vitro studies were reported, describing the principal molecular therapeutic targets and the mechanism of action of the different polyphenols studied. Furthermore, the results of the most relevant clinical trials for the treatment of urinary tract health were described. Future research is needed to confirm and validate the potential of polyphenols in the clinical prophylaxis of UTIs.
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Efficacy of resveratrol in male urogenital tract dysfunctions: an evaluation of pre-clinical data. Nutr Res Rev 2021; 36:86-97. [PMID: 34776039 DOI: 10.1017/s0954422421000354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Resveratrol is a polyphenol found naturally in fruits and plants. Recently, studies in humans and animal models have suggested beneficial properties of this polyphenol, such as improvements to metabolic and lipid profiles, along with antioxidant, anti-inflammatory and anti-proliferative effects. In the urogenital tract (UGT), resveratrol has also been tested clinically and experimentally as a therapeutic drug in several diseases; however, the translational efficacy of resveratrol, especially in UGT, is still a matter of debate. In the present review, we address the pre-clinical efficacy of resveratrol in UGT-related dysfunctions, focusing on lower urinary tract symptoms, non-cancerous prostatic disease (benign prostatic hyperplasia and prostatitis) and erectile dysfunction. In vitro studies indicate that resveratrol reduces inflammatory markers and oxidative stress, and improves endothelial function in UGT organs and cells isolated from humans and animals. Despite displaying low oral bioavailability, in vivo administration of resveratrol largely improves erectile dysfunction, benign prostatic hyperplasia, prostatitis and voiding impairments, as evidenced in different animal models. Resveratrol also acts as a microbiota modulator, which may explain some of its beneficial effects in vivo. In contrast to the large amount of pre-clinical data, there are insufficient clinical trials to establish resveratrol treatment efficacy in human UGT-related diseases. In summary, we provide an overview of the in vivo and in vitro efficacy of resveratrol in animal and human UGT dysfunctions, which may support future clinical trials.
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Metformin abrogates the voiding dysfunction induced by prolonged methylglyoxal intake. Eur J Pharmacol 2021; 910:174502. [PMID: 34516950 DOI: 10.1016/j.ejphar.2021.174502] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/14/2021] [Accepted: 09/09/2021] [Indexed: 12/17/2022]
Abstract
Methylglyoxal (MGO) is a reactive carbonyl species found at high levels in blood of diabetic patients. The anti-hyperglycemic drug metformin can scavenger MGO and reduce the formation of advanced glycation end products (AGEs). Here, we aimed to investigate if MGO-induced bladder dysfunction can be reversed by metformin. Male C57/BL6 mice received 0.5% MGO in drinking water for 12 weeks, and metformin (300 mg/kg, daily gavage) was given in the last two weeks. The bladder functions were evaluated by performing voiding behavior assays, cystometry and in vitro bladder contractions. MGO intake markedly elevated the levels of MGO and fluorescent AGEs in serum and reduced the mRNA expression and activity of glyoxalase (Glo1) in bladder tissues. Glucose levels were unaffected among groups. MGO intake also increased the urothelium thickness and collagen content of the bladder. Void spot assays in conscious mice revealed an increased void volume in MGO group. The cystometric assays in anesthetized mice revealed increases of basal pressure, non-voiding contractions frequency, bladder capacity, inter-micturition pressure and residual volume, which were accompanied by reduced voiding efficiency in MGO group. In vitro bladder contractions to carbachol, α,β-methylene ATP and electrical-field stimulation were significantly greater in MGO group. Metformin normalized the changes of MGO and AGEs levels, Glo1 expression and activity, urothelium thickness and collagen content. The MGO-induced voiding dysfunction were all restored by metformin treatment. Our findings strongly suggest that the amelioration of MGO-induced voiding dysfunction by metformin relies on its ability to scavenger MGO, preventing its accumulation in blood.
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Wu YH, Chueh KS, Chuang SM, Long CY, Lu JH, Juan YS. Bladder Hyperactivity Induced by Oxidative Stress and Bladder Ischemia: A Review of Treatment Strategies with Antioxidants. Int J Mol Sci 2021; 22:ijms22116014. [PMID: 34199527 PMCID: PMC8199707 DOI: 10.3390/ijms22116014] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 05/28/2021] [Indexed: 02/07/2023] Open
Abstract
Overactive bladder (OAB) syndrome, including frequency, urgency, nocturia and urgency incontinence, has a significantly negative impact on the quality-of-life scale (QoL) and can cause sufferer withdrawal from social activities. The occurrence of OAB can result from an imbalance between the production of pro-oxidants, such as free radicals and reactive species, and their elimination through protective mechanisms of antioxidant-induced oxidative stress. Several animal models, such as bladder ischemia/reperfusion (I/R), partial bladder outlet obstruction (PBOO) and ovarian hormone deficiency (OHD), have suggested that cyclic I/R during the micturition cycle induces oxidative stress, leading to bladder denervation, bladder afferent pathway sensitization and overexpression of bladder-damaging molecules, and finally resulting in bladder hyperactivity. Based on the results of previous animal experiments, the present review specifically focuses on four issues: (1) oxidative stress and antioxidant defense system; (2) oxidative stress in OAB and biomarkers of OAB; (3) OAB animal model; (4) potential nature/plant antioxidant treatment strategies for urinary dysfunction with OAB. Moreover, we organized the relationships between urinary dysfunction and oxidative stress biomarkers in urine, blood and bladder tissue. Reviewed information also revealed the summary of research findings for the effects of various antioxidants for treatment strategies for OAB.
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Affiliation(s)
- Yi-Hsuan Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung 80661, Taiwan
| | - Kuang-Shun Chueh
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Shu-Mien Chuang
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Cheng-Yu Long
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan;
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jian-He Lu
- Emerging Compounds Research Center, Department of Environmental Science and Engineering, College of Engineering, National Pingtung University of Science and Technology, Pintung 91201, Taiwan;
| | - Yung-Shun Juan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: ; Tel.: +886-7-3121101; Fax: +886-7-3506269
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Marcelissen T, Anding R, Averbeck M, Hanna-Mitchell A, Rahnama'i S, Cardozo L. Exploring the relation between obesity and urinary incontinence: Pathophysiology, clinical implications, and the effect of weight reduction, ICI-RS 2018. Neurourol Urodyn 2020; 38 Suppl 5:S18-S24. [PMID: 31821633 DOI: 10.1002/nau.24072] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/19/2019] [Accepted: 05/27/2019] [Indexed: 01/10/2023]
Abstract
AIMS To evaluate the relationship between obesity and urinary incontinence (UI) and to determine the effect of weight reduction on the severity of incontinence. METHODS This is a consensus report of the proceedings of a Research Proposal from the annual International Consultation on Incontinence-Research Society, 14 June to 16 June, 2018 (Bristol, UK): "What are the relationships between obesity and UI, and the effects of successful bariatric surgery?" RESULTS Obesity is an increasing problem worldwide and is associated with many adverse effects on health and quality of life. From both translational and clinical studies, there is a strong relationship between obesity and the occurrence of UI. Both mechanical and metabolic factors seem to play an important role including systemic inflammation and oxidative stress due to the release of cytokines in visceral adipose tissue. The success rate of anti-incontinence surgery does not seem to be greatly affected by body mass index (BMI), although reliable data and long-term follow-up are currently lacking. Both weight reduction programs and bariatric surgery can result in amelioration of UI. Various studies have shown that weight loss (particularly that associated with bariatric surgery) can reduce incontinence, and the degree of weight loss is positively correlated with improvement in symptoms. CONCLUSIONS Obesity is strongly associated with an increased prevalence of both stress and urgency UI. The treatment outcome does not seem to be highly dependent on BMI. Weight reduction is positively correlated with improvement of incontinence symptoms and therefore should be advocated in the management.
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Affiliation(s)
- Tom Marcelissen
- Department of Urology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Ralf Anding
- Department of Neurourology, University Hospital Bonn, Bonn, Germany
| | - Marcio Averbeck
- Department of Urology, Moinhos de Vento Hospital, Porto Alegre, Brazil
| | | | | | - Linda Cardozo
- Department of Urogynaecology, King's College Hospital, London, UK
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Alexandre EC, Cao N, Mizoguchi S, Saito T, Kurobe M, Gotoh D, Okorie M, Igarashi T, Antunes E, Yoshimura N. Urethral dysfunction in a rat model of chemically induced prostatic inflammation: potential involvement of the MRP5 pump. Am J Physiol Renal Physiol 2020; 318:F754-F762. [PMID: 32036697 DOI: 10.1152/ajprenal.00566.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Prostate inflammation (PI) is a clinical condition associated with infection and/or inflammation of the prostate. It is a common disease frequently associated to lower urinary tract (LUT) symptoms. The urethra is an understudied structure in the LUT and plays a fundamental role in the urinary cycle. Here, we proposed to evaluate the effect of PI on the urethra tissue. Male Sprague-Dawley rats were used, and PI was induced by formalin injection into the ventral lobes of the prostate. The pelvic urethra at the prostatic level was harvested for histological analysis, contraction (electrical field stimulation and phenylephrine), and relaxation (sodium nitroprusside/MK-571) experiments. Various gene targets [cytochrome c oxidase subunit 2, transforming growth factor-β1, interleukin-1β, hypoxia-inducible factor-1α, α1A-adrenoceptor, inositol 1,4,5-trisphosphate receptor type 1, voltage-gated Ca2+ channel subunit-α1D, neuronal nitric oxide synthase, soluble guanylyl cyclase, phosphodiesterase 5A, protein kinase CGMP-dependent 1, and multidrug resistance-associated protein 5 (MRP5; ATP-binding cassette subfamily C member 5)] were quantified, and cGMP levels were measured. No histological changes were detected, and functional assays revealed decreased contraction and increased relaxation of urethras from the PI group. The addition of MK-571 to functional assays increased urethral relaxation. Genes associated with inflammation were upregulated in urethras from the PI group, such as cytochrome oxidase c subunit 2, transforming growth factor-β1, interleukin-1β, and hypoxia-inducible factor-1α. We also found increased expression of L-type Ca2+ channels and the neuronal nitric oxide synthase enzyme and decreased expression of the MRP5 pump. Finally, cGMP production was enhanced in urethral tissue of PI animals. The results indicate that PI is associated with proinflammatory gene expression in the urethra without histologically evident inflammation and that PI produces a dysfunctional urethra and MRP5 pump downregulation, which results in cGMP accumulation inside the cell. These findings would help to better understand LUT dysfunctions associated with PI and the role of MRP pumps in the control of LUT function.
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Affiliation(s)
- Eduardo C Alexandre
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Nailong Cao
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Shinsuke Mizoguchi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Tetsuichi Saito
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Masahiro Kurobe
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Daisuke Gotoh
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Meri Okorie
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Taro Igarashi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo, Brazil
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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do Vale GT, Sousa AH, Gonzaga NA, de Oliveira MG, Justo AF, Alexandre EC, Tanus-Santos JE, Antunes E, Tirapelli CR. Chronic ethanol consumption induces micturition dysfunction and alters the oxidative state of the urinary bladder. Can J Physiol Pharmacol 2019; 97:1103-1114. [DOI: 10.1139/cjpp-2019-0143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Oxidative stress is pointed out as a major mechanism by which ethanol induces functional and structural changes in distinctive tissues. We evaluated whether ethanol consumption would increase oxidative stress and cause micturition dysfunction. Male C57BL/6J mice were treated with 20% ethanol (v/v) for 10 weeks. Our findings showed that chronic ethanol consumption reduced micturition spots and urinary volume in conscious mice, whereas in anaesthetized animals cystometric analysis revealed reduced basal pressure and increased capacity, threshold pressure, and maximum voiding. Treatment with ethanol reduced the contraction induced by carbachol in isolated bladders. Chronic ethanol consumption increased the levels of oxidant molecules and thiobarbituric acid reactive species in the mouse bladder. Upregulation of Nox2 was detected in the bladder of ethanol-treated mice. Increased activity of both superoxide dismutase and catalase were detected in the mouse bladder after treatment with ethanol. Conversely, decreased levels of reduced glutathione were detected in the bladder of ethanol-treated mice. The present study first demonstrated that chronic ethanol consumption induced micturition dysfunction and that this response was accompanied by increased levels of oxidant molecules in the mousebladder. These findings suggest that ethanol consumption is a risk factor for vesical dysfunction.
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Affiliation(s)
- Gabriel T. do Vale
- Laboratório de Farmacologia, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
- Programa de Pós-graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Arthur H. Sousa
- Laboratório de Farmacologia, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Natália A. Gonzaga
- Laboratório de Farmacologia, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
- Programa de Pós-graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Mariana G. de Oliveira
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Alberto F.O. Justo
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Eduardo C. Alexandre
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Jose E. Tanus-Santos
- Programa de Pós-graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Edson Antunes
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Carlos R. Tirapelli
- Escola de Enfermagem de Ribeirão Preto - DEPCH / Faculdade de Ciências Farmacêuticas de Ribeirão Preto - DFQ, USP, Ribeirão Preto, SP, Brazil
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12
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Baltaci AK, Gokbudak H, Baltaci SB, Mogulkoc R, Avunduk MC. The effects of resveratrol administration on lipid oxidation in experimental renal ischemia-reperfusion injury in rats. Biotech Histochem 2019; 94:592-599. [DOI: 10.1080/10520295.2019.1612091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- A. K. Baltaci
- Department of Physiology, Faculty of Medicine, Selçuk University, Konya, Turkey
| | - H. Gokbudak
- Department of Physiology, Faculty of Medicine, Selçuk University, Konya, Turkey
| | - S. B. Baltaci
- Department of Physiology, Faculty of Medicine, Selçuk University, Konya, Turkey
| | - R. Mogulkoc
- Department of Physiology, Faculty of Medicine, Selçuk University, Konya, Turkey
| | - M. C. Avunduk
- Meram Faculty of Medicine, Department of Pathology, Necmettin Erbakan University, Konya, Turkey
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13
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Powers SA, Ryan TE, Pak ES, Fraser MO, McClung JM, Hannan JL. Chronic high-fat diet decreased detrusor mitochondrial respiration and increased nerve-mediated contractions. Neurourol Urodyn 2019; 38:1524-1532. [PMID: 31074529 DOI: 10.1002/nau.24015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/19/2019] [Accepted: 04/03/2019] [Indexed: 01/21/2023]
Abstract
AIMS To assess the impact of chronic high-fat diet (HFD) on behavioral voiding patterns, detrusor contractility, and smooth muscle mitochondrial function in male mice. MATERIALS AND METHODS Male C57BL/6J mice (6 weeks) were fed a control or HFD for 20 weeks. Bladder function was assessed by void spot assays. Bladders were collected and detrusor contractility to carbachol (10-9 -10-5 M), and electrical field stimulation (EFS, 0.5-32 Hz) in the presence and absence of atropine was measured. Homogenized detrusor samples were placed in oxygraphs to assess the rate of oxygen consumption of the mitochondria within the detrusor in the presence of different substrates. Mitochondrial hydrogen peroxide (H2 O2 ) emission was measured fluorometrically. Detrusor citrate synthase activity was measured via enzyme activity kit and Western blots assessed the electron transport chain (ETC) protein content. RESULTS HFD significantly increased body weight, adiposity, and blood glucose levels. HFD mice demonstrated increased voiding frequency and increased EFS-induced detrusor contractility. There were no changes in detrusor relaxation or cholinergic-medicated contraction. Mitochondrial respiration was decreased with HFD and H2 O 2 emission was increased. The relative amount of mitochondria in the detrusor was similar between groups. However, ETC complexes V and III were increased following HFD. CONCLUSIONS Chronic HFD increased adiposity, lead to more frequent voiding, and enhanced EFS-mediated detrusor contractions. Mitochondrial respiration was decreased and H2 O 2 emission increased following HFD. Further research is required to determine if alterations in mitochondrial function could play a role in the development of HFD-induced bladder dysfunction.
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Affiliation(s)
- Shelby A Powers
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Terence E Ryan
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina.,East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina.,Department of Applied Physiology & Kinesiology, University of Florida, Gainesville, Florida
| | - Elena S Pak
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Matthew O Fraser
- Department of Surgery, Duke University Medical Center, Durham, North Carolina.,Department of Research and Development, Durham Veterans Affairs Medical Center, Durham, North Carolina
| | - Joseph M McClung
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina.,East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina
| | - Johanna L Hannan
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina.,East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, North Carolina
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14
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Yang X, Lian D, Fan P, Xu Y, Wang J, Chen F, Lai H, Jiang W, Zhang L, Huang P, Cao H. Effects of Radix Linderae extracts on a mouse model of diabetic bladder dysfunction in later decompensated phase. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:41. [PMID: 30717724 PMCID: PMC6360732 DOI: 10.1186/s12906-019-2448-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 01/23/2019] [Indexed: 01/09/2023]
Abstract
Background This study aimed to elucidate the effects and mechanisms of Radix Linderae (RL) extracts on a mouse model of diabetic bladder dysfunction (DBD), especially on later decompensated phase. Methods Male C57BL/6J mice were intraperitoneally injected with streptozotocin (STZ) after 4 weeks of high-fat diet (HFD) feeding. DBD mouse models (later decompensated phase) were developed by 12-weeks persistent hyperglycemia and then treated with RL extracts for 4 weeks. During administration, the fasting blood glucose (FBG) test was performed once a week. Four weeks later, oral glucose tolerance test (OGTT), voided stain on paper (VSOP), and urodynamic alteration were explored. We also performed haematoxylin and eosin (H&E) and Masson’s trichrome staining to observe the histology of the bladder. Then, the contractile responses to α, β-methylene ATP, capsaicin (CAP), KCl and carbachol were measured. Moreover, qPCR assay was performed to analyse the bladder gene expression levels of M3 receptors and TRPV1. Results The diabetic mice exhibited higher FBG, OGTT and urine production, and no substantial alteration was observed after RL treatment. Urodynamic test showed the maximum bladder capacity (MBC), residual volume (RV) and bladder compliance (BC), as well as the decrement of voided efficiency (VE) and micturition volume (MV), remarkably increased in the DBD mice. Furthermore, RL treatment significant improved urodynamic urination, with lower MBC, RV, and, BC, as well as higher VE and MV, as compared with the model groups. The wall thickness of the bladder and the ratio of smooth muscle/collagen remarkably increased, and RL could effectively attenuate the pathological change. The response of bladder strips to the stimulus was also reduced in the DBD mice, and RL treatment markedly increased the contraction. Furthermore, the gene expression levels of M3 receptors and TRPV1 were down-regulated in the bladders of the diabetic mice, whereas RL treatment retrieved those gene expression levels. Conclusions RL extracts can improve the bladder voiding functions of the DBD model mice in later decompensated phase, and underlying mechanisms was associated with mediating the gene expression of M3 receptors and TRPV1 in the bladder instead of improving blood sugar levels. Electronic supplementary material The online version of this article (10.1186/s12906-019-2448-1) contains supplementary material, which is available to authorized users.
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15
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Campbell CL, Yu R, Li F, Zhou Q, Chen D, Qi C, Yin Y, Sun J. Modulation of fat metabolism and gut microbiota by resveratrol on high-fat diet-induced obese mice. Diabetes Metab Syndr Obes 2019; 12:97-107. [PMID: 30655683 PMCID: PMC6324607 DOI: 10.2147/dmso.s192228] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The antioxidant resveratrol (RSV) has low bioavailability and can reach the colon to access the gut microbial ecosystem. RSV administration together with high-fat diet prevented abnormal changes of intestinal microbiota. However, whether or not RSV can reshape the intestinal microbiota of obese mice and alleviate obesity-related diseases remains to be studied. This study aimed to explore the role of RSV in alleviating high-fat-induced obesity and its relationship with oxidative stress and gut microbiota. METHODS Male C57BL/6 mice were divided into five groups and administered for 16 weeks with: standard diet (CON), high-fat diet (60% energy for lard, HFD), and HFD with low, medium, and high dose of RSV, 50, 75, and 100 mg/kg body weight administered daily via drinking water, respectively. RESULTS Medium and high RSV treatment significantly prevented body weight gain, decreased relative weight of liver and adipose tissue compared with HFD (P<0.05). All doses significantly prevented HFD-induced increase of serum triglyceride, low density lipoprotein cholesterol, glucose, and endotoxemia (P<0.05). Medium and high dose also prevented chronic inflammation by decreasing serum interleukin-1 and tumor necrosis factor-alpha (P<0.05), and oxidative stress in liver and brain indicated by increase in superoxide dismutase, catalase, glutathione peroxidase activity (P<0.05). Formation of malondialdehyde was prevented by all doses compared with HFD (P<0.05). Both medium and high doses of RES increased alpha diversity of gut microbiota according to the Chao1 and Shannon indices (P<0.05). Medium dose induced obvious shift in gut microbiota composition according to principal component analysis. High dose of RSV effectively prevented HFD-induced increase of Coriobacteriaceae and Desulfovi-brionaceae (P<0.05), which show a significant correlation with body weight (r>0.8 P<0.00). CONCLUSION RSV prevented HFD-induced endotoxemia, oxidative stress, and gut microbiota change.
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Affiliation(s)
- C Linda Campbell
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Renqiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, China,
- Department of Central Lab, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, China, ,
| | - Fengzhi Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, China,
| | - Daozhen Chen
- Department of Central Lab, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, China, ,
| | - Ce Qi
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yongxiang Yin
- Department of Pathology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, China
| | - Jin Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Caputo C, Uhr A, Murphy A. Weight Loss and Overactive Bladder. CURRENT BLADDER DYSFUNCTION REPORTS 2018. [DOI: 10.1007/s11884-018-0487-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Alexandre EC, Calmasini FB, Sponton ACDS, de Oliveira MG, André DM, Silva FH, Delbin MA, Mónica FZ, Antunes E. Influence of the periprostatic adipose tissue in obesity-associated mouse urethral dysfunction and oxidative stress: Effect of resveratrol treatment. Eur J Pharmacol 2018; 836:25-33. [PMID: 30102890 DOI: 10.1016/j.ejphar.2018.08.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 11/15/2022]
Abstract
Obese mice display overactive bladder (OAB) associated with impaired urethra smooth muscle (USM) function. In this study, we evaluated the role of the adipose tissue surrounding the urethra and prostate in obese mice (here referred as periprostatic adipose tissue; PPAT) to the USM dysfunction. Male C57BL6/JUnib mice fed with either a standard-chow or high-fat diet to induce obesity were used. In PPAT, histological analysis, and qPCR analysis for gp91phox, tumor necrosis factor-α (TNF-α) and superoxide dismutase (SOD) were conducted. In USM, concentration-response curves to contractile and relaxing agents, as well as measurements of reactive-oxygen species and nitric oxide (NO) levels were performed. The higher PPAT area in obese mice was accompanied by augmented gp91phox (NOX2) and TNF-α expressions, together with decreased SOD1 expression. In USM of obese group, the contractile responses to phenylephrine and vasopressin were increased, whereas the relaxations induced with glyceryl trinitrate were reduced. The reactive-oxygen species and NO levels in USM of obese mice were increased and decreased, respectively. A higher SOD expression was also detected in obese group whilst no changes in the gp91phox levels were observed. We next evaluated the effects of the antioxidant resveratrol (100 mg/kg/day, two-weeks, PO) in the functional alterations and NO levels of obese mice. Resveratrol treatment in obese mice reversed both the functional USM dysfunction and the reduced NO production. Our data show that PPAT exerts a local inflammatory response and increases oxidative stress that lead to urethral dysfunction. Resveratrol could be an auxiliary option to prevent obesity-associated urethral dysfunction.
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Affiliation(s)
- Eduardo C Alexandre
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil.
| | - Fabiano B Calmasini
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Amanda C da S Sponton
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas 13083-862, Brazil
| | - Mariana G de Oliveira
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Diana M André
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Fábio H Silva
- Hematology and Hemotherapy Center, University of Campinas (UNICAMP), Campinas 13083-878, Brazil
| | - Maria Andréia Delbin
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Fabíola Z Mónica
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
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18
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Dokumacioglu E, Demiray O, Dokumacioglu A, Sahin A, Sen TM, Cankaya S. Measuring urinary 8-hydroxy-2'-deoxyguanosine and malondialdehyde levels in women with overactive bladder. Investig Clin Urol 2018; 59:252-256. [PMID: 29984340 PMCID: PMC6028472 DOI: 10.4111/icu.2018.59.4.252] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/11/2018] [Indexed: 12/01/2022] Open
Abstract
Purpose In this study, we aimed to explain the role of oxidative stress in women with overactive bladder (OAB) by investigating the levels of 8-hydroxy-2′-deoxyguanosine (8-OHdG), a marker of oxidative DNA damage, and malondialdehyde (MDA), an indicator of lipid peroxidation. Materials and Methods A total of 90 women were included in the study: 45 female patients diagnosed with OAB at Hopa State Hospital Urology Polyclinic and 45 healthy women without any metabolic or neurologic disease. Levels of MDA and 8-OHdG were measured in 24-hour urine samples for all subjects. Results Urinary levels of MDA and 8-OHdG were significantly higher in the OAB group than in the control group (p<0.001). A significant positive correlation (p<0.001) was found between the measurements of 8-OHdG and MDA. Conclusions Oxidative stress may be important in the pathophysiology of OAB, because levels of 8-OHdG and MDA are increased. Increased levels of 8-OHdG may be due to damaged nuclear and mitochondrial DNA as a result of oxidative attacks caused by free radicals. Nevertheless, further randomized and prospective studies with larger patient populations are needed.
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Affiliation(s)
- Eda Dokumacioglu
- Department of Nutrition and Dietetics, Artvin Coruh University Faculty of Healthy Sciences, Artvin, Turkey
| | - Ozay Demiray
- Department of Urology, Hopa State Hospital, Artvin, Turkey
| | - Ali Dokumacioglu
- Department of Medical Biochemistry, Hopa State Hospital, Artvin, Turkey
| | - Arzu Sahin
- Department of Physiology, Ordu University Faculty of Medicine, Ordu, Turkey
| | - Tugba Mazlum Sen
- Department of Medical Biochemistry, Karadeniz Teknik University Faculty of Medicine, Trabzon, Turkey
| | - Soner Cankaya
- Department of Biostatistics and Medical Informatics, Ordu University Faculty of Medicine, Ordu, Turkey
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Obesity-induced mouse benign prostatic hyperplasia (BPH) is improved by treatment with resveratrol: implication of oxidative stress, insulin sensitivity and neuronal growth factor. J Nutr Biochem 2018; 55:53-58. [DOI: 10.1016/j.jnutbio.2017.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 11/01/2017] [Accepted: 12/21/2017] [Indexed: 12/15/2022]
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20
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Andersson KE. Oxidative stress and its possible relation to lower urinary tract functional pathology. BJU Int 2017; 121:527-533. [PMID: 29063681 DOI: 10.1111/bju.14063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Oxidative stress is considered to reflect an imbalance between the systemic manifestation of reactive oxygen and nitrogen species (RONS) and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage. RONS are not only harmful agents that cause oxidative damage in pathologies; they also have important roles as regulatory agents in a range of biological phenomena. They are normally generated as by-products of oxygen metabolism; however, environmental stressors (i.e., ultraviolet radiation, ionizing radiations, pollutants, heavy metal, and xenobiotics) contribute to greatly increase RONS production. Several antioxidants have been exploited in recent years for their actual or supposed beneficial effect against oxidative stress, but to date, none has been approved for any indication because they have not met the criteria of efficacy for drug approval. The present review discusses the concept of oxidative stress, how to measure it, how to prevent it, and its occurrence in different organ systems with special reference to the lower urinary tract.
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Affiliation(s)
- Karl-Erik Andersson
- Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston Salem, NC, USA.,Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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21
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Optimization of Subcritical Water Extraction of Resveratrol from Grape Seeds by Response Surface Methodology. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7040321] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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