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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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Hong D, Zhang H, Yu Y, Qian H, Yu X, Xiong L. Total muscle-to-fat ratio influences urinary incontinence in United States adult women: a population-based study. Front Endocrinol (Lausanne) 2024; 15:1309082. [PMID: 38606086 PMCID: PMC11007130 DOI: 10.3389/fendo.2024.1309082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 03/18/2024] [Indexed: 04/13/2024] Open
Abstract
Purpose This study aims to investigate the relationship between the total muscle-to-fat ratio (tMFR) and female urinary incontinence (UI), determine whether tMFR can serve as a useful index for predicting UI, and identify factors that may influence this relationship. Methods We retrospectively analyzed data from 4391 adult women participating in the National Health and Nutrition Examination Survey (NHANES) conducted between 2011 and 2018. The correlation between tMFR and UI was examined using a dose-response curve generated through a restricted cubic spline (RCS) function, LASSO and multivariate logistic regression. Furthermore, predictive models were constructed incorporating factors such as age, race, hypertension, diabetes, cotinine levels, and tMFR. The performance of these predictive models was evaluated using training and test datasets, employing calibration curves, receiver operating characteristic curves, and clinical decision curves. Mediation effects were also analyzed to explore potential relationships between tMFR and female UI. Results In a sample of 4391 adult women, 1073 (24.4%) self-reported experiencing UI, while 3318 (75.6%) reported not having UI. Based on the analyses involving LASSO regression and multivariate logistic regression, it was found that tMFR exhibited a negative association with UI (OR = 0.599, 95% CI: 0.497-0.719, P < 0.001). The results from the restricted cubic spline chart indicated a decreasing risk of UI in women as tMFR increased. Furthermore, the model constructed based on logistic regression analysis demonstrated a certain level of accuracy (in the training dataset: area under the curve (AUC) = 0.663; in the test dataset: AUC = 0.662) and clinical applicability. The mediation analysis revealed that the influence of tMFR on the occurrence of UI in women might potentially occur through the blood index lymphocyte count (P = 0.040). Conclusion A high tMFR serves as a protective factor against UI in women. Furthermore, lymphocyte might be involved in the relationship between tMFR and female UI.
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Affiliation(s)
| | | | | | | | - Xiya Yu
- Department of Anesthesiology and Perioperative Medicine, Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Lize Xiong
- Department of Anesthesiology and Perioperative Medicine, Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
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Li Z, Lu X, Zhang K, Wu S, Yu W, Chen X, Zheng W. U-shaped association between serum 25-hydroxyvitamin D concentrations and urinary leakage among adult females aged 45 years and over in the United States: a cross-sectional study. BMC Womens Health 2024; 24:58. [PMID: 38263023 PMCID: PMC10804705 DOI: 10.1186/s12905-024-02906-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 01/13/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND The relationship between serum vitamin D status and urinary leakage (UL) among middle-aged females needs to be further studied. The aim of this study was to evaluate the association of serum 25-hydroxyvitamin D [25(OH)D] concentrations with UL among American females ages 45 years and over. METHODS Seven cycles of the National Health and Nutrition Examination Survey (NHANES) with self-report UL data, were used. A total of 9525 women aged 45 years and older were enrolled in this study. Univariate and multivariate logistic regression models and the smooth curve fitting were utilized to analyze the association between clinical UL and serum 25-hydroxyvitamin D [25(OH)D] concentrations. RESULTS A non-linear relationship between serum 25(OH)D concentrations and clinical ULwas observed. When serum 25(OH)D concentration was higher than the inflection point 63.5 nmol/L, a positive correlation was observed between serum 25(OH)D concentrations and clinical UL ([OR]: 1.007, 95%CI: 1.005-1.009, P < 0.01). However, when serum 25(OH)D concentration was below the inflection point 63.5 nmol/L, a negative correlation was observed between serum 25(OH)D concentrations and clinical UL ([OR]: 0.993, 95%CI: 0.989-0.996, P < 0.01). CONCLUSIONS The association between serum vitamin D and the risk of UL exhibited a U-shaped pattern among US middle-aged females, with an inflection point occurring at a serum 25(OH)D concentration of 63.5 nmol/L.
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Affiliation(s)
- Zeyu Li
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Xinzhuo Lu
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Keshuai Zhang
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Shuangyan Wu
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Wei Yu
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Xiaoling Chen
- Department of Intensive Care Unit, Fujian Medical University Union Hospital, Fuzhou, China.
| | - Wenzhong Zheng
- Department of Urology, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou District, Fuzhou, 200001, Fujian Province, P.R. China.
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Shimizu S. Association of detrusor underactivity with aging and metabolic syndrome: suggestions from animal models. J Smooth Muscle Res 2024; 60:23-30. [PMID: 39085088 PMCID: PMC11291108 DOI: 10.1540/jsmr.60.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 06/26/2024] [Indexed: 08/02/2024] Open
Abstract
Detrusor underactivity, a condition in which the bladder muscle does not contract strongly or long enough to empty the bladder completely or within the normal time frame, is a common cause of lower urinary tract symptoms in older individuals of both sexes. Although aging is a known risk factor for detrusor underactivity, its pathophysiological mechanisms are not fully understood. Therefore, establishing animal models that closely mimic the pathophysiology of detrusor underactivity in humans is necessary to elucidate these mechanisms. Metabolic syndrome is a cluster of several risk factors, including obesity, hyperlipidemia, hyperglycemia, and hypertension, which are associated with the development of diabetes, cardiovascular disease, and lower urinary tract dysfunction in both sexes. Notably, bladder dysfunction resulting from detrusor underactivity is observed at an earlier age in animal models with diabetes mellitus than in those without. Recently, detrusor underactivity-like phenotypes have been observed at a relatively early age in animal models with metabolic syndrome, involving obesity, hyperlipidemia, and hypertension, compared with those without. Therefore, this review introduces the association of detrusor underactivity with aging and metabolic syndrome, as well as possible pathophysiological mechanisms for detrusor underactivity from reports of various animal models. Notably, metabolic syndrome may accelerate the onset of age-related detrusor underactivity, and further analysis of old animal models with metabolic syndrome may help elucidate the pathogenesis of detrusor underactivity in humans.
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Affiliation(s)
- Shogo Shimizu
- Department of Physiology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku-shi, Kochi 783-8505, Japan
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Du H, Xu F, Liu J, Zhang J, Qin Y, Xu Y, Li N. Long-term aspirin administration suppresses inflammation in diabetic cystopathy. Aging (Albany NY) 2023; 15:9128-9143. [PMID: 37702622 PMCID: PMC10522387 DOI: 10.18632/aging.205021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 08/22/2023] [Indexed: 09/14/2023]
Abstract
Diabetic cystopathy (DCP) is one of the most common and troublesome urologic complications of diabetes mellitus, characterized by chronic low-grade inflammatory response. However, the correlation between inflammation and disease progression remains ambiguous and effective drugs interventions remain deficient. Herein, during 12-week study, 48 male Sprague-Dawley rats were randomly assigned to four groups: negative control (NC), NC treated with aspirin (NC+Aspirin), DCP, and DCP treated with aspirin (DCP+Aspirin). Type 1 diabetes mellitus was established by intraperitoneal injection of streptozotocin (65 mg/kg). After 2 weeks modeling, the rats in treatment groups received daily oral aspirin (100 mg/kg/d). After 10 weeks of treatment, aspirin ameliorated pathological weight loss and bladder weight increase in diabetic rats, accompanied by a 16.5% decrease in blood glucose concentrations. H&E, Masson, immunohistochemistry and transmission electron microscopy revealed that a dilated bladder with thickened detrusor smooth muscle (DSM) layer, inflammatory infiltration, fibrosis and ultrastructural damage were observed in diabetic rats, which were obviously ameliorated by aspirin. The dynamic investigations at 4, 7 and 10 weeks revealed inflammation gradually increased as the disease progresses. After 10 weeks of treatment, the expression of TNF-α, IL-1β, IL-6, and NF-κB has been decreased to 78%, 39.7%, 44.1%, 33.3% at mRNA level and 67.6%, 76.7%, 71.4%, 67.1% at protein level, respectively (DCP+Aspirin vs. DCP, p < 0.01). Aspirin partially restored the increased expression of inflammatory mediators in bladder DSM of diabetic rats. The study provided insight into long-term medication therapies, indicating that aspirin might serve as a potential strategy for DCP treatment.
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Affiliation(s)
- Huifang Du
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Feihong Xu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Jingxuan Liu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Jiakui Zhang
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Yinhua Qin
- Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, China
| | - Youqian Xu
- Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ning Li
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, China
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Hughes FM, Odom MR, Cervantes A, Purves J. Inflammation triggered by the NLRP3 inflammasome is a critical driver of diabetic bladder dysfunction. Front Physiol 2022; 13:920487. [PMID: 36505062 PMCID: PMC9733912 DOI: 10.3389/fphys.2022.920487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 11/09/2022] [Indexed: 11/26/2022] Open
Abstract
Diabetes is a rapidly expanding epidemic projected to affect as many as 1 in 3 Americans by 2050. This disease is characterized by devastating complications brought about high glucose and metabolic derangement. The most common of these complications is diabetic bladder dysfunction (DBD) and estimates suggest that 50-80% of patients experience this disorder. Unfortunately, the Epidemiology of Diabetes Interventions and Complications Study suggests that strict glucose control does not decrease ones risk for incontinence, although it does decrease the risk of other complications such as retinopathy, nephropathy and neuropathy. Thus, there is a significant unmet need to better understand DBD in order to develop targeted therapies to alleviate patient suffering. Recently, the research community has come to understand that diabetes produces a systemic state of low-level inflammation known as meta-inflammation and attention has focused on a role for the sterile inflammation-inducing structure known as the NLRP3 inflammasome. In this review, we will examine the evidence that NLRP3 plays a central role in inducing DBD and driving its progression towards an underactive phenotype.
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Affiliation(s)
- Francis M. Hughes
- Division of Urology, Department of Surgery, Duke University Medical Center, Durham, NC, United States
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Zhang Y, Zhang J, Hong M, Huang J, Xu S, Wang R, Zhou N, Huang P, Tan B, Cao H. Suo Quan Wan ameliorates bladder overactivity and regulates neurotransmission via regulating Myosin Va protein expression. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 104:154265. [PMID: 35763954 DOI: 10.1016/j.phymed.2022.154265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/31/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Ancient prescriptions of Suo Quan Wan (SQW) have therapeutic effects on diabetic bladder dysfunction. However, the underlying mechanism remains unclear. Here, we hypothesized that SQW ameliorates bladder overactivity and regulates neurotransmission via regulating Myosin Va protein expression. METHODS After diabetic rats were induced by streptozotocin (65 mg/kg), the model of diabetic bladder dysfunction was established by detecting fasting blood glucose, urodynamic test, in vitro muscle strip experiments, and histological examination. One week after induction, SQW was given to observe the therapeutic effect. The expression levels of Myosin Va in control, Model, SQW L and SQW H groups were detected by RT-qPCR, RNAscope and immunofluorescence assay. The expression levels of ChAT, SP, nNOS and VIP proteins were observed by immunofluorescence assay. After knockdown and overexpression of Myosin Va, the expression changes of ChAT, SP, nNOS and VIP and the regulatory role of SQW were observed. RESULTS STZ-induced DM rats had significantly higher serum glucose levels and lower body weight. Compared with the diabetic rats, SQW treatment significantly improved urination function with decreased residual volume (RV), bladder compliance (BC), non-voiding contractions (NVCs), and increased voided efficiency (VE). In addition, contractile responses of muscle strips to electrical-field stimulation (EFS), carbachol (CCh), KCl were significantly lower in the SQW H and SQW L groups than those in the model group. RT-qPCR found that the expression of Myosin Va in the bladder tissue or bladder neurons in model group was significantly increased compared with the control group, and SQW treatment significantly decreased the levels of Myosin Va. In DM rats, ChAT and SP expression were significantly increased, while nNOS and VIP expression were significantly decreased, and SQW improved this phenomenon. Interestingly, SQW ameliorated the abnormal expression of ChAT, SP, nNOS and VIP caused by myosin Va knockdown, and Myosin Va overexpression results are consistent with these. CONCLUSIONS SQW ameliorates overactive bladder and regulate neurotransmission via regulating Myosin Va mRNA and protein expression.
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Affiliation(s)
- Yao Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Jiao Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ming Hong
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Jingyi Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Siyuan Xu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Rui Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Na Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ping Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Bo Tan
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hongying Cao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.
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Chen J, Peng L, Xiang L, Li B, Shen H, Luo D. Association between body mass index, trunk and total body fat percentage with urinary incontinence in adult US population. Int Urogynecol J 2022; 34:1075-1082. [PMID: 35960315 DOI: 10.1007/s00192-022-05317-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/30/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION AND HYPOTHESIS To assess the association of body mass index (BMI), trunk and total body fat percentage with the prevalence and severity of urinary incontinence (UI) stratified by gender among a US adult population. METHODS A representative cross-sectional survey of participants aged ≥ 20 years was conducted using the data from the 2011-2018 National Health and Nutrition Examination Survey. Multivariate logistic and linear regression models were used to explore the association among the three obesity measures above with the prevalence and severity of UI. RESULTS A total of 6964 individuals (4168 males and 2796 females) enrolled for the final analysis. Among males, the weighted prevalence of UI was 7.8%, with 1.3% stress urinary incontinence, 5.8% urge urinary incontinence and 0.7% mixed urinary incontinence. For females, the weighted prevalence of UI was 54.2%, with 31.9% stress urinary incontinence, 7.0% urge urinary incontinence and 15.6% mixed urinary incontinence. Multivariate logistic regression revealed increased BMI and trunk fat percentage significantly increased odds of UI (BMI: OR = 1.05 [per 1 kg/m2], 95% CI: 1.03-1.07, P < 0.001; trunk fat percentage: OR = 1.15 [per 5% increase in trunk fat percentage], 95% CI: 1.06-1.25, P = 0.002) in females. Similar trends were observed in the severity of UI (BMI: β = 0.07, 95% CI: 0.05-0.09, P < 0.001; trunk fat percentage: β = 0.18, 95% CI: 0.10-0.26, P < 0.001) by a multivariate linear regression. In males, no significant association was observed (BMI: OR = 0.99 [per 1 kg/m2], 95% CI: 0.97-1.02, P = 0.663; trunk fat percentage: OR = 0.95 [per 5% increase in trunk fat percentage], 95% CI: 0.84-1.08, P = 0.430; total fat percentage: OR = 0.94 [per 5% increase in total fat percentage], 95% CI: 0.80-1.10, P = 0.424). CONCLUSIONS An increased BMI and trunk fat percentage are significantly associated with higher prevalence and severity of UI in females.
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Affiliation(s)
- Jiawei Chen
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Liao Peng
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Liyuan Xiang
- Department of Clinical Research Management, West China Hospital, No. 37, Guoxue Alley, Chengdu, Sichuan Province, China
| | - Boya Li
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Shen
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Deyi Luo
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.
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Xu F, Du H, Hou J, Liu J, Li N. Anti-inflammation properties of resveratrol in the detrusor smooth muscle of the diabetic rat. Int Urol Nephrol 2022; 54:2833-2843. [PMID: 35943662 DOI: 10.1007/s11255-022-03334-x] [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: 05/05/2022] [Accepted: 07/22/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE In this paper, we aimed to prove that resveratrol can inhibit inflammation in the detrusor smooth muscle of diabetic rats, which may provide a new direction for diabetic cystopathy (DCP) treatment. METHODS We induced a Sprague-Dawley (SD) rat model of type 1 diabetes by intraperitoneal injections of streptozotocin (STZ). Then, we separated the SD rats into four groups: (1) an excipient-treated control group; (2) a resveratrol-treated control group; (3) an excipient-treated streptozotocin (STZ)-injected group; and (4) a resveratrol-treated STZ-injected group. We administered the resveratrol or excipient by intragastric administration. After 12 weeks of diabetes induction, we measured the blood-sugar concentrations and bladder weights, and we took the bladder tissues of each group of rats for hematoxylin-eosin staining to observe the histological changes. We used real-time quantitative polymerase chain reaction (qPCR) and Western blotting to analyze the expression levels of tumor necrosis factor-alpha (TNF-α), nuclear factor kappa B (NF-κB), interleukin (IL)-6, and IL-1β. RESULTS The bodyweights of the diabetic rats were appreciably reduced, while the bladder weights and blood-glucose concentrations were substantially increased. Oral resveratrol could not improve the changes in the bodyweights and blood-glucose concentrations, but it had a certain effect on the bladder weights. In a macroscopic evaluation, the bladder walls of the STZ-induced diabetes rats were thickened, and, from the H&E staining, we could see that the bladder tissues of the diabetic rats had inflammatory cell infiltration, edema, and the capillary congestion of the mucosa and lamina propria. After resveratrol treatment, the bladder-wall thickening was reduced, and the tissue damage and inflammation were significantly ameliorated. We could associate all these changes with markedly heightened expressions of TNF-α, IL-1β, IL-6, and NF-κB in the detrusor smooth muscle (DSM) tissues of the diabetic rats. Oral treatment with resveratrol alleviated the expressivity of the inflammatory cytokines in the DSM tissues. CONCLUSIONS Resveratrol treatment ameliorated the histological changes in the bladder and inhibited the expressions of DSM-tissue inflammatory factors in diabetes rats. Resveratrol may provide a new direction of research for the treatment of diabetic cystopathy.
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Affiliation(s)
- Feihong Xu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
| | - Huifang Du
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
| | - Jun Hou
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
| | - Jingxuan Liu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
| | - Ning Li
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China.
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Erdogan BR, Liu G, Arioglu-Inan E, Michel MC. Established and emerging treatments for diabetes-associated lower urinary tract dysfunction. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2022; 395:887-906. [PMID: 35545721 PMCID: PMC9276575 DOI: 10.1007/s00210-022-02249-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 12/16/2022]
Abstract
Dysfunction of the lower urinary tract (LUT) including urinary bladder and urethra (and prostate in men) is one of the most frequent complications of diabetes and can manifest as overactive bladder, underactive bladder, urinary incontinence, and as aggravated symptoms of benign prostate hyperplasia. We have performed a selective literature search to review existing evidence on efficacy of classic medications for the treatment of LUT dysfunction in diabetic patients and animals, i.e., α1-adrenoceptor and muscarinic receptor antagonists, β3-adrenoceptor agonists, and phosphodiesterase type 5 inhibitors. Generally, these agents appear to have comparable efficacy in patients and/or animals with and without diabetes. We also review effects of antidiabetic medications on LUT function. Such studies have largely been performed in animal models. In the streptozotocin-induced models of type 1 diabetes, insulin can prevent and reverse alterations of morphology, function, and gene expression patterns in bladder and prostate. Typical medications for the treatment of type 2 diabetes have been studied less often, and the reported findings are not yet sufficient to derive robust conclusions. Thereafter, we review animal studies with emerging medications perhaps targeting diabetes-associated LUT dysfunction. Data with myoinositol, daidzein, and with compounds that target oxidative stress, inflammation, Rac1, nerve growth factor, angiotensin II receptor, serotonin receptor, adenosine receptor, and soluble guanylyl cyclase are not conclusive yet, but some hold promise as potential treatments. Finally, we review nonpharmacological interventions in diabetic bladder dysfunction. These approaches are relatively new and give promising results in preclinical studies. In conclusion, the insulin data in rodent models of type 1 diabetes suggest that diabetes-associated LUT function can be mostly or partially reversed. However, we propose that considerable additional experimental and clinical studies are needed to target diabetes itself or pathophysiological changes induced by chronic hyperglycemia for the treatment of diabetic uropathy.
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Affiliation(s)
- Betül R Erdogan
- Department of Pharmacology, Faculty of Pharmacy, Izmir Katip Celebi University, Izmir, Turkey
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Ebru Arioglu-Inan
- Department of Pharmacology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Martin C Michel
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University, Mainz, Germany.
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SKA-31-induced activation of small-conductance calcium-activated potassium channels decreased modulation of detrusor smooth muscle function in a rat model of obesity. J Bioenerg Biomembr 2022; 54:135-144. [PMID: 35478071 DOI: 10.1007/s10863-022-09939-2] [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: 12/03/2021] [Accepted: 04/15/2022] [Indexed: 10/18/2022]
Abstract
Increased excitability and contractility of detrusor smooth muscle (DSM) cells are associated with overactive bladder (OAB), which is often induced by obesity. Small-conductance Ca2+-activated K+ (SK) channels regulate the excitability and contractility of DSM cells. Selective pharmacological activation of SK channels attenuates hyperpolarization and the decreased relaxation effect in DSM cells in obesity-induced OAB. However, additional data are needed to confirm the regulatory effect of SK channels on the function of DSM cells in obesity-related OAB. The tested hypothesis was that activation of SK channels decreases modulation of DSM function in a rat model of obesity-related OAB. Female Sprague Dawley rats were fed a normal diet (ND) or a high-fat diet (HFD), weighed after 12 weeks, and subjected to urodynamic study, patch-clamp electrophysiology, and isometric tension recording. The average body weight and incidence of OAB were increased in the HFD group. Patch-clamp studies revealed that pharmacological activation of SK channels with SKA-31 had attenuated hyperpolarization of DSM cells. In addition, isometric tension recordings indicated that SKA-31 decreased relaxation of spontaneous phasic contractions of DSM strips in the HFD group. Attenuated function of SK channels increased the excitability and contractility of DSM cells, which contributed to the occurrence of OAB, suggesting that SK channels are potential therapeutic targets for control of OAB.
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12
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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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Zhang S, Bian H, Qiu S, Cai B, Jin K, Zheng X, Li J, Tu X, Ai J, Yang L, Wei Q. Associations between the dietary inflammatory index and urinary incontinence among women younger than 65 years. Sci Rep 2021; 11:9340. [PMID: 33927304 PMCID: PMC8084978 DOI: 10.1038/s41598-021-88833-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 04/12/2021] [Indexed: 02/05/2023] Open
Abstract
The purpose of this study was to evaluate the association between dietary inflammatory index (DII) and urinary incontinence (UI) among a representative sample of the US women. We performed a cross-sectional analysis of women younger than 65 years using the 1999 to 2016 NHANES (National Health and Nutrition Examination Survey) populations. DII were calculated based on baseline dietary intake using 24-h dietary recalls. UI was determined and categorized by self-reported questions. Multivariable logistic regression models were used to assess the association between DII and UI. Stratified linear regression models were applied to test for interaction in prespecified subgroup of interest. A total of 13,441 women age between 20 and 65 years were included in the final analysis. Of these participants 3230 (24.03%) complained of urgency UI, 5276 (39.25%) complained of stress UI and 2028 (15.09%) complained of mixed UI. On multivariate analysis, analysis with DII categorized as quartiles revealed significantly increase odds of urgency UI in the most pro-inflammatory quartile compared to the most anti-inflammatory quartile (OR 1.24, 95% CI 1.07–1.44, P = 0.004 for trend) in full adjustment model. Similar results were observed in SUI (OR 1.14, 95% CI 1.00–1.30, P = 0.021 for trend) and MUI (OR 1.20, 95% CI 1.02−1.43, P = 0.022 for trend). More pro-inflammatory diets, as presented by higher DII scores are associated with an increased likelihood of UI in American women younger than 65 years. Further studies are needed to explore the possible physiological mechanism and evaluate the potential therapeutic implications.
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Affiliation(s)
- Shiyu Zhang
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Haiyang Bian
- Institute of Reproductive and Child Health and Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing, China
| | - Shi Qiu
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China.,Center of Biomedical Big Data, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Boyu Cai
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Kun Jin
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Xiaonan Zheng
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Jiakun Li
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Xiang Tu
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Jianzhong Ai
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China
| | - Lu Yang
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China.
| | - Qiang Wei
- Department of Urology, Institute of Urology and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan, 610041, People's Republic of China.
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Mossa AH, Abdaem J, Cammisotto P, Campeau L. Deleterious impact of nerve growth factor precursor (proNGF) on bladder urothelial and smooth muscle cells. Cell Signal 2021; 81:109936. [PMID: 33529756 DOI: 10.1016/j.cellsig.2021.109936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 12/21/2022]
Abstract
The nerve growth factor precursor (proNGF) activates p75NTR receptor and promotes cell death in different tissues, yet this pathophysiological effect is not fully described in the bladder. The aim of this study was to identify the biological effect of proNGF/p75NTR activation on urothelial and smooth muscle (SM) cells of rodents' bladder. Cell viability was assessed by MTT assay which showed a significant reduction in urothelial viability after 24 h of incubation with proNGF in culture medium [5 or 10 nM], an effect not seen in SM cells. Western blot analysis on cellular protein extracts showed increased expression of the transmembrane TNF-α and activation of RhoA in urothelial cells exposed to proNGF with no evidence of a nuclear translocation of NF-κB assessed by western blotting on nuclear extracts and immunofluorescence. The activation of p75NTR-death domain related pathways in urothelial cells such as TNF-α or RhoA had a downstream effect on NO release and the junctional protein occludin, as estimated respectively by colorimetric and western blotting. On the other hand, proNGF did not induce TNF-α or RhoA expression in SM cells, but induced a significant NF-κB nuclear translocation. ProNGF had a different impact on SM as evidenced by a significant dose- and time-dependent increase in SM proliferation and migration examined by MTT test and cell migration assay. Together, our results indicate that activation of proNGF/p75NTR axis induces degenerative changes to the urothelial layer impacting its barrier and signaling integrity, while promoting adaptive proliferative changes in detrusor SM cells that can interfere with the contractile phenotype essential for proper bladder function.
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Affiliation(s)
- Abubakr H Mossa
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Jacob Abdaem
- School of Medicine, McGill University, 3605 Rue de la Montagne, Montréal, QC H3G 2M1, Canada
| | - Philippe Cammisotto
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Lysanne Campeau
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada; Urology Department, Jewish General Hospital, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada.
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Mossa AH, Galan A, Cammisotto PG, Velasquez Flores M, Shamout S, Barcelona P, Saragovi HU, Campeau L. Antagonism of proNGF or its receptor p75 NTR reverses remodelling and improves bladder function in a mouse model of diabetic voiding dysfunction. Diabetologia 2020; 63:1932-1946. [PMID: 32699962 DOI: 10.1007/s00125-020-05222-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/18/2020] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Although 80% of diabetic patients will suffer from voiding difficulties and urinary symptoms, defined as diabetic voiding dysfunction (DVD), therapeutic targets and treatment options are limited. We hypothesise that the blockade of the pro-nerve growth factor (NGF)/p75 neurotrophin receptor (p75NTR) axis by an anti-proNGF monoclonal antibody or by a small molecule p75NTR antagonist (THX-B) can restore bladder remodelling (represented by bladder weight) in an animal model of DVD. Secondary outcomes of the study include improvements in bladder compliance, contractility and morphology, as well as in voiding behaviour, proNGF/NGF balance and TNF-α expression. METHODS In a streptozotocin-induced mouse model of diabetes, diabetic mice received either a blocking anti-proNGF monoclonal antibody or a p75NTR antagonist small molecule as weekly systemic injections for 4 weeks. Animals were tested at baseline (at 2 weeks of diabetes induction), and after 2 and 4 weeks of treatment. Outcomes measured were voiding function with voiding spot assays and cystometry. Bladders were assessed by histological, contractility and protein expression assays. RESULTS Diabetic mice showed features of DVD as early as 2 weeks after diabetes diagnosis (baseline) presented by hypertrophy, reduced contractility and abnormal cystometric parameters. Following treatment initiation, a twofold increase (p < 0.05) in untreated diabetic mouse bladder weight and thickness compared with non-diabetic controls was observed, and this change was reversed by p75NTR antagonism (37% reduction in bladder weight compared with untreated diabetic mice [95% CI 14%, 60%]) after 4 weeks of treatment. However, blocking proNGF did not help to reverse bladder hypertrophy. While diabetic mice had significantly worse cystometric parameters and contractile responses than non-diabetic controls, proNGF antagonism normalised bladder compliance (0.007 [Q1-Q3; 0.006-0.009] vs 0.015 [Q1-Q3; 0.014-0.029] ml/cmH2O in untreated diabetic mice, representing 62% reduction [95% CI 8%, 110%], p < 0.05) and contractility to KCl, carbachol and electrical field stimulation (p < 0.05 compared with the diabetic group) after 2 weeks of treatment. These effects were not observed after 4 weeks of treatment with proNGF antagonist. p75NTR antagonism did not show important improvements in cystometric parameters after 2 weeks of treatment. Slightly improved bladder compliance (0.01 [Q1-Q3; 0.009-0.012] vs 0.013 [Q1-Q3; 0.011-0.016] ml/cmH2O for untreated diabetic mice) was seen in the p75NTR antagonist-treated group after 4 weeks of treatment with significantly stabilised contractile responses to KCl, carbachol and electric field stimulation (p < 0.05 for each) compared with diabetic mice. Bladder dysfunction observed in diabetic mice was associated with a significant increase in bladder proNGF/NGF ratio (3.1 [±1.2] vs 0.26 [±0.04] ng/pg in control group, p < 0.05 at week 2 of treatment) and TNF-α (p < 0.05). The proNGF/NGF ratio was partially reduced (about 60% reduction) with both treatments (1.03 [±0.6] ng/pg for proNGF antibody-treated group and 1.4 [±0.76] ng/pg for p75NTR blocker-treated group after 2 weeks of treatment), concomitant with a significant decrease in the bladder levels of TNF-α (p < 0.05), despite persistent hyperglycaemia. CONCLUSIONS/INTERPRETATION Our findings indicate that blockade of proNGF and the p75NTR receptor in diabetes can impede the development and progression of DVD. The reported improvements in morphological and functional features in our DVD model validates the proNGF/p75NTR axis as a potential therapeutic target in this pathology. Graphical abstract.
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Affiliation(s)
- Abubakr H Mossa
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Alba Galan
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Philippe G Cammisotto
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Monica Velasquez Flores
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - Samer Shamout
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
- Division of Urology, Department, of Surgery, McGill University, Montreal, QC, Canada
| | - Pablo Barcelona
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
| | - H Uri Saragovi
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
- Center for Experimental Therapeutics, Jewish General Hospital, Montreal, QC, Canada
- Department of Ophthalmology and Vision Sciences, McGill University, Montreal, QC, Canada
| | - Lysanne Campeau
- Lady Davis Research Institute, McGill University, 3755 Chemin de la Cote-Ste-Catherine, Montreal, QC, H3T 1E2, Canada.
- Division of Urology, Department, of Surgery, McGill University, Montreal, QC, Canada.
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Attenuated regulatory function of the small-conductance Ca 2+-activated K + channel in detrusor smooth muscle cells excitability in an obese rat model. Int Urol Nephrol 2020; 52:1851-1861. [PMID: 32399771 DOI: 10.1007/s11255-020-02487-x] [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: 02/26/2020] [Accepted: 04/29/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Overactive bladder (OAB) is related to detrusor overactivity (DO), which is caused by the increased detrusor smooth muscle (DSM) cells excitability. Small-conductance Ca2+-activated K+ (SK) channels is a fundamental regulator of excitability and contractility in DSM cells. Obesity-related OAB is associated with the decreased expression and regulatory function of SK channels in DSM layer. However, the regulation role of SK channels in obesity-related OAB DSM cell excitability is still unknown. Here, we tested the hypothesis that obesity-related OAB is associated with reduced expression and activity of SK channels in DSM cells. METHODS Female Sprague-Dawley rats were fed a normal diet (ND) or a high-fat diet (HFD) and weighed after 12 weeks. We performed urodynamic study, single-cell quantitative reverse transcription-polymerase chain reaction (qRT-PCR), and patch-clamp electrophysiology. RESULTS Increased average body weights and urodynamically demonstrated OAB were observed in HFD rats. Single-cell qRT-PCR experiments discovered the decreased mRNA expression level of SK channel in DSM cell from HFD rats. Patch-clamp studies revealed that NS309, a SK channel activator, had an attenuated effect on membrane potential hyperpolarization in HFD DSM cells. In addition, the reduced whole cell SK channel currents were recorded in HFD DSM cells. CONCLUSIONS Attenuated SK channels expression and function, which results in the increased DSM cells excitability and contributes to DO, is discovered in obesity-related OAB DSM cells, suggesting that SK channels might be potential therapeutic targets to control OAB.
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Hashemi Gheinani A, Bigger-Allen A, Wacker A, Adam RM. Systems analysis of benign bladder disorders: insights from omics analysis. Am J Physiol Renal Physiol 2020; 318:F901-F910. [PMID: 32116016 DOI: 10.1152/ajprenal.00496.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The signaling pathways and effectors that drive the response of the bladder to nonmalignant insults or injury are incompletely defined. Interrogation of biological systems has been revolutionized by the ability to generate high-content data sets that capture information on a variety of biomolecules in cells and tissues, from DNA to RNA to proteins. In oncology, such an approach has led to the identification of cancer subtypes, improved prognostic capability, and has provided a basis for precision treatment of patients. In contrast, systematic molecular characterization of benign bladder disorders has lagged behind, such that our ability to uncover novel therapeutic interventions or increase our mechanistic understanding of such conditions is limited. Here, we discuss existing literature on the application of omics approaches, including transcriptomics and proteomics, to urinary tract conditions characterized by pathological tissue remodeling. We discuss molecular pathways implicated in remodeling, challenges in the field, and aspirations for omics-based research in the future.
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Affiliation(s)
- Ali Hashemi Gheinani
- Department of Urology, Boston Children's Hospital, Boston, Massachusetts.,Department of Surgery, Harvard Medical School, Boston, Massachusetts
| | - Alexander Bigger-Allen
- Department of Urology, Boston Children's Hospital, Boston, Massachusetts.,Biological and Biomedical Sciences PhD Program, Harvard Medical School, Boston, Massachusetts
| | - Amanda Wacker
- Department of Urology, Boston Children's Hospital, Boston, Massachusetts.,Florida State University, Tallahassee, Florida
| | - Rosalyn M Adam
- Department of Urology, Boston Children's Hospital, Boston, Massachusetts.,Department of Surgery, Harvard Medical School, Boston, Massachusetts
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18
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El Agamy DF, Naguib YM. CoQ10 ameliorates monosodium glutamate-induced alteration in detrusor activity and responsiveness in rats via anti-inflammatory, anti-oxidant and channel inhibiting mechanisms. BMC Urol 2019; 19:103. [PMID: 31660941 PMCID: PMC6819562 DOI: 10.1186/s12894-019-0534-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/02/2019] [Indexed: 12/19/2022] Open
Abstract
Background Competent detrusor muscles with coordinated contraction and relaxation are crucial for normal urinary bladder storage and emptying functions. Hence, detrusor instability, and subsequently bladder overactivity, may lead to undesirable outcomes including incontinence. Multiple mechanisms may underlie the pathogenesis of detrusor overactivity including inflammation and oxidative stress. Herein, we tested the possibility that CoQ10 may have a potential therapeutic role in detrusor overactivity. Methods Forty adult male Wistar albino rats weighing 100-150 g were used in the present study. Rats were divided (10/group) into control (receiving vehicles), monosodium glutamate (MSG)-treated (receiving 5 mg/kg MSG daily for 15 consecutive days), MSG + OO-treated (receiving concomitantly 5 mg/kg MSG and olive oil for 15 consecutive days), MSG + CoQ10-treated (receiving concomitantly 5 mg/kg MSG and 100 mg/kg CoQ10 daily for 15 consecutive days) groups. Results MSG resulted in significant increase in bladder weight and sensitised the bladder smooth muscles to acetylcholine. MSG has also resulted in significant increase in bladder TNF-α, IL-6, malondialdehyde, nerve growth factor and connexion 43, with significant decrease in the antioxidant enzymes superoxide dismutase and catalase. Olive oil had no effect on MSG induced alterations of different parameters. Treatment with CoQ10 has resulted in a significant restoration of all the altered parameters. Conclusion Taken together, our results suggest that CoQ10 antagonizes the deleterious effects of MSG on detrusor activity. We propose that CoQ10 could be a therapeutic strategy targeting urinary bladder dysfunction.
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Affiliation(s)
- Dalia F El Agamy
- Clinical Physiology Department, Faculty of Medicine, Menoufia University, Menoufia, Egypt
| | - Yahya M Naguib
- Clinical Physiology Department, Faculty of Medicine, Menoufia University, Menoufia, Egypt.
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19
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Chen J, Zhao J, Cao Y, Zhang G, Chen Y, Zhong J, Huang W, Zeng J, Wu P. Relationship between alterations of urinary microbiota and cultured negative lower urinary tract symptoms in female type 2 diabetes patients. BMC Urol 2019; 19:78. [PMID: 31438919 PMCID: PMC6704724 DOI: 10.1186/s12894-019-0506-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 08/02/2019] [Indexed: 12/31/2022] Open
Abstract
Background Lower urinary tract symptoms (LUTS) is the most common complication of diabetes. However, the underlying pathogenesis of cultured negative LUTS (cn-LUTS) in diabetic patients has not been well understood. Numerous evidence indicates that urinary dysbiosis is related to urologic disorders. We aim to study alterations of the urinary microbiota of cn-LUTS in type 2 diabetes (T2D) patients. Methods Female T2D patients and controls were recruited and requested to finish the American Urological Association Symptom Index. Mid-stream urine was collected for culturing and extracting DNA. Microbial diversity and composition were analyzed by targeting to 16S rDNA. Linear discriminant analysis effect size (LEfSe) was carried out to identify significantly different bacteria. Results 32 female T2D patients and 26 controls were enrolled. No significant differences in alpha diversity were observed between patients and controls. However, statistically decreased richness (ACE index and Chao 1 index, 85.52(13.75, 204.84) vs. 129.82(63.89, 280.30) and 83.86(11.00, 210.77) vs. 125.19(62.00, 251.77), P = 0.005; Observed Species, 76(10, 175) vs. 98(54, 234), P = 0.011) and decreased species diversity (Shannon index, 1.37(0.04, 3.48) vs. 2.09(0.98, 3.43), P = 0.033; Simpson index, 0.46 (0.06, 0.99) vs. 0.23(0.07, 0.64), P = 0.029) were shown in moderate-to-severe LUTS group and high Hemoglobin A1c group, respectively. A significant difference of beta diversity was found between T2D patients and controls and T2D patients with different severity of cn-LUTS as well as the different level of Hemoglobin A1c. LEfSe revealed that 10 genera (e.g., Escherichia-Shigella and Klebsiella) were increased and 7 genera were decreasing in T2D patients, 3 genera (e.g., Escherichia-Shigella and Campylobacter) were increased and 16 genera (e.g., Prevotella) were reduced in moderate-to-severe LUTS group, 2 genera (Escherichia-Shigella and Lactobacillus) were over-represented and 10 genera (e.g., Prevotella) were under-represented in high Hemoglobin A1c group. Finally, Hemoglobin A1c was found positively correlated with the total score of the American Urological Association Symptom Index (r = 0.509, P = 0.003). Conclusions Urinary dysbiosis may be related to cn-LUTS in female T2D patients. A better understanding of urinary microbiota in the development and progression of cn-LUTS in female T2D patients was necessary. The severity of cn-LUTS was correlated to hyperglycemia and chronic hyperglycemia might induce or promote cn-LUTS by influencing urinary microbiota. Electronic supplementary material The online version of this article (10.1186/s12894-019-0506-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiawei Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jie Zhao
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Ying Cao
- Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Guihao Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yang Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jialei Zhong
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Weina Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiarong Zeng
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Peng Wu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Li N, Ding H, Zhang P, Li Z, Liu Y, Wang P. Attenuated BK channel function promotes overactive bladder in a rat model of obesity. Aging (Albany NY) 2019; 11:6199-6216. [PMID: 31480021 PMCID: PMC6738405 DOI: 10.18632/aging.102182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 08/10/2019] [Indexed: 12/17/2022]
Abstract
Overactive bladder (OAB) is mostly observed in obese individuals, and is associated with enhanced excitability and contractility of the detrusor smooth muscle (DSM). Large-conductance voltage- and Ca2+-activated K+ (BK) channels reduce the excitability and contractility of the DSM. We tested whether obesity-induced OAB is associated with altered BK channel expression and activity in the DSM. Seven-week-old female Sprague-Dawley rats (N=80) were fed a normal or high-fat diet (HFD) for 12 weeks. HFD-fed rats exhibited a higher average bodyweight and urodynamically established detrusor overactivity. mRNA levels of the Kcnma1 (BKα subunit) and Kcnmb1 (BKβ1 subunit) in whole tissues and cells from the DSM were reduced in HFD-fed rats. A selective BK channel opener, NS1619, was then applied to DSM cells from the two groups of rats. Patch-clamp techniques revealed that spontaneous transient outward currents, NS1619-induced activation of spontaneous transient outward currents, and whole-cell BK currents, as well as NS1619-induced membrane hyperpolarization, were attenuated in DSM cells from HFD-fed rats. The relaxation effect of NS1619 on contractility was reduced in DSM strips from HFD-fed rats. Thus, impaired expression of Kcnma1 and Kcnmb1 in the DSM contributes to obesity-induced OAB, suggesting that BK channels could be a useful treatment targets in OAB.
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Affiliation(s)
- Ning Li
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
| | - Honglin Ding
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning, China.,Department of Urology, Affiliated Hospital, Chifeng University, Chifeng, Neimeng, China
| | - Peng Zhang
- Department of General Surgery, Shenyang 242 Hospital, Shenyang, Liaoning, China
| | - Zizheng Li
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
| | - Yili Liu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
| | - Ping Wang
- Department of Urology, Fourth Affiliated Hospital, China Medical University, Shenyang, Liaoning, China
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21
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Yang X, Wang J, Rui‐Wang, Xu Y, Chen F, Tang L, Ren W, Fu L, Tan B, Huang P, Cao H. Time-dependent functional, morphological, and molecular changes in diabetic bladder dysfunction in streptozotocin-induced diabetic mice. Neurourol Urodyn 2019; 38:1266-1277. [PMID: 31006139 PMCID: PMC6850069 DOI: 10.1002/nau.24008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 12/11/2022]
Abstract
AIM Diabetic bladder dysfunction (DBD) is one of the most common and bothersome complications of diabetes mellitus (DM). This study aimed to investigate the functional, structural, and molecular changes of the bladder at 0, 3, 6, 9, and 12 weeks after DM induction by streptozotocin (STZ) in male C57BL/6 mice. METHODS Male C57BL/6J mice were injected with STZ (130 mg/kg). Then, diabetic general characteristics, cystometry test, histomorphometry, and contractile responses to α, β-methylene ATP, KCl, electrical-field stimulation, carbachol were performed at 0, 3, 6, 9, and 12 weeks after induction. Finally, protein and messenger RNA (mRNA) expressions of myosin Va and SLC17A9 were quantified. RESULTS DM mice exhibited lower body weight, voiding efficiency and higher water intake, urine production, fasting blood glucose, oral glucose tolerance test, bladder wall thickness, maximum bladder capacity, residual volume, bladder compliance. In particular, nonvoiding contractions has increased more than five times at 6 weeks. And the amplitudes of spontaneous activity, contractile responses to all stimulus was about two times higher at 6 weeks but cut almost in half at 12 weeks. The protein and mRNA expressions of myosin Va and SLC17A9 were about two times higher at 6 weeks, but myosin Va was reverted nearly 40% while SLC17A9 is still higher at 12 weeks. CONCLUSIONS DBD transitioned from a compensated state to a decompensated state in STZ-induced DM mice at 9 to 12 weeks after DM induction. Our molecular data suggest that the transition may be closely related to the alterations of myosin Va and SLC17A9 expression levels in the bladder with time.
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Affiliation(s)
- Xu‐feng Yang
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jing Wang
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Rui‐Wang
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yi‐fei Xu
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Fang‐jun Chen
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Li‐yao Tang
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Wen‐kang Ren
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Li‐jun Fu
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Bo Tan
- School of Basic Medical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
| | - Ping Huang
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
- Dongguan & Guangzhou University of Chinese Medicine Cooperative Academy of Mathematical Engineering for Chinese MedicineGuangzhou University of Chinese MedicineDongguanChina
| | - Hong‐ying Cao
- Department of pharmacology of Chinese Medicine, School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhouChina
- Dongguan & Guangzhou University of Chinese Medicine Cooperative Academy of Mathematical Engineering for Chinese MedicineGuangzhou University of Chinese MedicineDongguanChina
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22
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Wang J, Lian DW, Yang XF, Xu YF, Chen FJ, Lin WJ, Wang R, Tang LY, Ren WK, Fu LJ, Huang P, Cao HY. Suo Quan Wan Protects Mouse From Early Diabetic Bladder Dysfunction by Mediating Motor Protein Myosin Va and Transporter Protein SLC17A9. Front Pharmacol 2019; 10:552. [PMID: 31178730 PMCID: PMC6543251 DOI: 10.3389/fphar.2019.00552] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/02/2019] [Indexed: 12/25/2022] Open
Abstract
Objective: To investigate the effects of Suo Quan Wan (SQW), a traditional Chinese herbal formula, on the overactive bladder (OAB) of type 2 diabetes mellitus (T2DM) mouse models, particularly on its function of mediating the gene and protein expression levels of myosin Va and SLC17A9. Materials and Methods: After 4 weeks high-fat diet (HFD) feeding, C57BL/6J mice were injected with streptozotocin (100 mg/kg) for four times. After 3 weeks, the diabetic mice were treated with SQW for another 3 weeks. Voided stain on paper assay, fasting blood glucose (FBG) test, and oral glucose tolerance test (OGTT) were conducted. Urodynamic test, tension test [α,β-methylene ATP, electrical-field stimulation (EFS), KCl, and carbachol] and histomorphometry were also performed. Western blot analysis and qPCR assays were used to quantify the expression levels of myosin Va and SLC17A9. Results: The diabetic mice exhibited decreased weight but increased water intake, urine production, FBG, and OGTT. No significant changes were observed after 3 weeks SQW treatment. Urodynamic test indicated that the non-voiding contraction (NVC) frequency, maximum bladder capacity (MBC), residual volume (RV), and bladder compliance (BC) were remarkably increased in the diabetic mice, whereas the voided efficiency (VE) was decreased as a feature of overactivity. Compared with the model mice, SQW treatment significantly improved urodynamic urination with decreased NVC, MBC, RV, and BC, and increased VE. Histomorphometry results showed that the bladder wall of the diabetic mice thickened, and SQW effectively attenuated the pathological alterations. The contract responses of bladder strips to all stimulators were higher in the DSM strips of diabetic mice, whereas SQW treatment markedly decreased the contraction response for all stimuli. Moreover, the protein and gene expression levels of myosin Va and SLC17A9 were up-regulated in the bladders of diabetic mice, but SQW treatment restored such alterations. Conclusion: T2DM mice exhibited the early phase of diabetic bladder dysfunction (DBD) characterized by OAB and bladder dysfunction. SQW can improve the bladder storage and micturition of DBD mice by mediating the protein and gene expression levels of myosin Va and SLC17A9 in the bladder, instead of improving the blood glucose level.
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Affiliation(s)
- Jing Wang
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Da-Wei Lian
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xu-Feng Yang
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yi-Fei Xu
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fang-Jun Chen
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei-Jun Lin
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui Wang
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li-Yao Tang
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wen-Kang Ren
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li-Jun Fu
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ping Huang
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China.,Dongguan and Guangzhou University of Chinese Medicine Cooperative Academy of Mathematical Engineering for Chinese Medicine, Guangzhou University of Chinese Medicine, Dongguan, China
| | - Hong-Ying Cao
- Department of Pharmacology of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China.,Dongguan and Guangzhou University of Chinese Medicine Cooperative Academy of Mathematical Engineering for Chinese Medicine, Guangzhou University of Chinese Medicine, Dongguan, China
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23
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Wang F, Wen Q, Zhang S, Fu Z, Liu F, Cui J, Liu J, Tian H. Sustained bile drainage decreases the organs injuries via inflammation-associated factors modulation in a severe acute pancreatitis rat model. Exp Ther Med 2019; 17:4628-4634. [PMID: 31086593 DOI: 10.3892/etm.2019.7478] [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: 07/11/2018] [Accepted: 03/07/2019] [Indexed: 11/06/2022] Open
Abstract
The timely and effective treatment for severe acute pancreatitis (SAP) is favorable to prognosis. Decompression of the bile duct might be a feasible way to decrease the progression of SAP. The present study investigated the effects of sustained bile external drainage on organs injury caused by SAP in Sprague-Dawley (SD) rats and the mechanisms involved. A total of 72 female SD rats weighting 190-230 g were randomly divided into four groups (n=18): Sham operation group (SOG), SOG + bile drainage group (BDG), SAP group, and SAP + BDG. Sodium taurocholate solution (4%; 1 mg/kg body weight) was used to set up SAP model via injection of retrograde puncture of biliopancreatic duct through the duodenum. A cannula was inserted into the bile duct and fixed externally to establish BDG model. At each time points (t=3, 6, 12; n=6), tissues from the liver, lung, and pancreas, and blood samples were collected. Serum amylase (AMY) was analyzed in all the samples. The levels of tumor necrosis factor-α (TNF-α), heme oxygenase-1 (HO-1), interleukin-10 (IL-10) and high mobility group box 1 (HMGB1) were detected by ELISA. Hematoxylin-eosin staining was performed to observe the histopathological changes, and nuclear transcription factor (NF)-κB-p65 levels in the pancreas were analyzed by western blotting. The data indicated that BDG alleviated the SAP progression and multiple organs injuries. Meanwhile, the histopathological changes of the pancreas, liver, and lungs were improved by BDG. BDG decreased the pathological scores of pancreas significantly (P<0.05). The levels of AMY, TNF-α, HMGB1, and NF-κB-p65 were significantly downregulated by BDG (P<0.05), while the level of HO-1 was upregulated and IL-10 was unchanged. In summary, BDG may attenuate the multiple organs injuries caused by SAP via downregulation of TNF-α, HMGB1, NF-κB-p65 and upregulation of HO-1.
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Affiliation(s)
- Fuhai Wang
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Qingbin Wen
- Department of Surgery, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P.R. China
| | - Sai Zhang
- Department of Surgery, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P.R. China
| | - Zhen Fu
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Feng Liu
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Jing Cui
- Department of Pathology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Ju Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Hu Tian
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
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24
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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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25
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Klee NS, McCarthy CG, Lewis S, McKenzie JL, Vincent JE, Webb RC. Urothelial Senescence in the Pathophysiology of Diabetic Bladder Dysfunction-A Novel Hypothesis. Front Surg 2018; 5:72. [PMID: 30564582 PMCID: PMC6288180 DOI: 10.3389/fsurg.2018.00072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/12/2018] [Indexed: 12/11/2022] Open
Abstract
Diabetic bladder dysfunction (DBD) is a well-recognized and common symptom affecting up to 50% of all diabetic patients. DBD has a broad range of clinical presentations ranging from overactive to underactive bladder symptoms that develops in middle-aged to elderly patients with long standing and poorly controlled diabetes. Low efficacy of current therapeutics and lifestyle interventions combined with high national healthcare costs highlight the need for more research into bladder dysfunction pathophysiology and novel treatment options. Cellular senescence is an age-related physiologic process in which cells undergo irreversible growth arrest induced by replicative exhaustion and damaging insults. While controlled senescence negatively regulates cell proliferation and promotes tissue regeneration, uncontrolled senescence is known to result in tissue dysfunction through enhanced secretion of inflammatory factors. This review presents previous scientific findings and current hypotheses that characterize diabetic bladder dysfunction. Further, we propose the novel hypothesis that cellular senescence within the urothelial layer of the bladder contributes to the pro-inflammatory/pro-oxidant environment and symptoms of diabetic bladder dysfunction. Our results show increased cellular senescence in the urothelial layer of the bladder; however, whether this phenomenon is the cause or effect of DBD is unknown. The urothelial layer of the bladder is made up of transitional epithelia specialized to contract and expand with demand and plays an active role in transmission by modulating afferent activity. Transition from normal functioning urothelial cells to secretory senescence cells would not only disrupt the barrier function of this layer but may result in altered signaling and sensation of bladder fullness; dysfunction of this layer is known to result in symptoms of frequency and urgency. Future DBD therapeutics may benefit from targeting and preventing early transition of urothelial cells to senescent cells.
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Affiliation(s)
- Nicole S Klee
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Cameron G McCarthy
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States
| | - Steven Lewis
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Jaine L McKenzie
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States.,Department of Surgery, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Julie E Vincent
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - R Clinton Webb
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
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26
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Ding H, Zhang P, Li N, Liu Y, Wang P. The phosphodiesterase type 4 inhibitor roflumilast suppresses inflammation to improve diabetic bladder dysfunction rats. Int Urol Nephrol 2018; 51:253-260. [PMID: 30474782 DOI: 10.1007/s11255-018-2038-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 11/19/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE To demonstrate that phosphodiesterase type 4 (PDE4) inhibitors could potentially treat diabetic bladder dysfunction (DBD) through modulation of the systemic inflammatory response. METHODS In this 6-week study, 60 female Sprague-Dawley rats were divided into three groups: (i) vehicle-treated control rats; (ii) vehicle-treated streptozocin (STZ)-injected rats; and (iii) roflumilast-treated STZ-injected rats. Oral roflumilast (5 mg/kg/day) was administered during the last 4 weeks of STZ injection to induce diabetes in the test group. At 6 weeks, a urodynamic study was performed in each group. The expression of nuclear factor kappa B (NF-κB), tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, and IL-1β in detrusor smooth muscle (DSM) was analyzed using quantitative reverse transcription-polymerase chain reaction and Western blotting. RESULTS A significant decrease in bodyweight and significant increases in bladder weight and blood glucose level were observed in the diabetic rats and were not ameliorated by roflumilast treatment. Cystometry showed the increased bladder capacity, voiding volume, residual urine volume, and voiding interval in the diabetic rats and the prevention of these changes by roflumilast. These changes were accompanied by significantly enhanced expression of NF-κB, TNF-α, IL-6, and IL-1β in DSM tissue from diabetic rats. Furthermore, roflumilast attenuated the expression of inflammatory factors in DSM tissue. CONCLUSIONS Oral treatment with roflumilast in diabetic rats improves bladder function and inhibits the expression of inflammatory factors in DSM tissue, indicating that PDE4 is a potential therapeutic target for DBD.
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Affiliation(s)
- Honglin Ding
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China.,Department of Urology, Affiliated Hospital, Chifeng University, 42 Wangfu Street, Chifeng, Neimeng, China
| | - Peng Zhang
- Department of General Surgery, Shenyang 242 Hospital, 3 Leshan Road, Shenyang, Liaoning, China
| | - Ning Li
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China.
| | - Yili Liu
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
| | - Ping Wang
- Department of Urology, Fourth Affiliated Hospital, China Medical University, 4 Chongshan East Road, Shenyang, Liaoning, China
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27
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Inhibition of Rho kinase by GSK 269962 reverses both corticosterone-induced detrusor overactivity and depression-like behaviour in rats. Eur J Pharmacol 2018; 837:127-136. [DOI: 10.1016/j.ejphar.2018.08.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/19/2018] [Accepted: 08/21/2018] [Indexed: 12/25/2022]
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28
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Wang N, Zhang S, Zhu F, Yang Y, Chen L, Lü P, Yu L, Chen K. Proteomic Study on the New Potential Mechanism and Biomarkers of Diabetes. Proteomics Clin Appl 2018; 13:e1800043. [DOI: 10.1002/prca.201800043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 07/05/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Niannian Wang
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
| | - Shu Zhang
- School of Food and Biological EngineeringJiangsu University Zhenjiang 212000 Jiangsu China
| | - Feifei Zhu
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
| | - Yanhua Yang
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
| | - Liang Chen
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
| | - Peng Lü
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
| | - Li Yu
- Affiliated Hospital of Jiangsu University Zhenjiang 212000 Jiangsu China
| | - Keping Chen
- Institute of Life SciencesJiangsu University Zhenjiang 212000 Jiangsu China
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29
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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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30
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Tumor Necrosis Factor-α Initiates miRNA-mRNA Signaling Cascades in Obstruction-Induced Bladder Dysfunction. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1847-1864. [DOI: 10.1016/j.ajpath.2018.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/03/2018] [Accepted: 05/03/2018] [Indexed: 02/08/2023]
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31
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Tao R, Wang C, Stöhr O, Qiu W, Hu Y, Miao J, Dong XC, Leng S, Stefater M, Stylopoulos N, Lin L, Copps KD, White MF. Inactivating hepatic follistatin alleviates hyperglycemia. Nat Med 2018; 24:1058-1069. [PMID: 29867232 PMCID: PMC6039237 DOI: 10.1038/s41591-018-0048-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 04/10/2018] [Indexed: 12/16/2022]
Abstract
Unsuppressed hepatic glucose production (HGP) contributes substantially to glucose intolerance and diabetes, which can be modeled by the genetic inactivation of hepatic insulin receptor substrate 1 (Irs1) and Irs2 (LDKO mice). We previously showed that glucose intolerance in LDKO mice is resolved by hepatic inactivation of the transcription factor FoxO1 (that is, LTKO mice)-even though the liver remains insensitive to insulin. Here, we report that insulin sensitivity in the white adipose tissue of LDKO mice is also impaired but is restored in LTKO mice in conjunction with normal suppression of HGP by insulin. To establish the mechanism by which white adipose tissue insulin signaling and HGP was regulated by hepatic FoxO1, we identified putative hepatokines-including excess follistatin (Fst)-that were dysregulated in LDKO mice but normalized in LTKO mice. Knockdown of hepatic Fst in the LDKO mouse liver restored glucose tolerance, white adipose tissue insulin signaling and the suppression of HGP by insulin; however, the expression of Fst in the liver of healthy LTKO mice had the opposite effect. Of potential clinical significance, knockdown of Fst also improved glucose tolerance in high-fat-fed obese mice, and the level of serum Fst was reduced in parallel with glycated hemoglobin in obese individuals with diabetes who underwent therapeutic gastric bypass surgery. We conclude that Fst is a pathological hepatokine that might be targeted for diabetes therapy during hepatic insulin resistance.
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Affiliation(s)
- Rongya Tao
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Caixia Wang
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Oliver Stöhr
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Wei Qiu
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yue Hu
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ji Miao
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - X Charlie Dong
- Department of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sining Leng
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Margaret Stefater
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Nicholas Stylopoulos
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Lin Lin
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kyle D Copps
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Morris F White
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
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Yang W, Searl TJ, Yaggie R, Schaeffer AJ, Klumpp DJ. A MAPP Network study: overexpression of tumor necrosis factor-α in mouse urothelium mimics interstitial cystitis. Am J Physiol Renal Physiol 2018; 315:F36-F44. [PMID: 29465304 PMCID: PMC6087793 DOI: 10.1152/ajprenal.00075.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 02/14/2018] [Accepted: 02/19/2018] [Indexed: 12/24/2022] Open
Abstract
Interstitial cystitis/bladder pain syndrome is a chronic bladder condition associated with pain and voiding dysfunction that is often regarded as a neurogenic cystitis. Patient symptoms are correlated with the presence of urothelial lesions. We previously characterized a murine neurogenic cystitis model that recapitulates mast cell accumulation and urothelial lesions, and these events were dependent on TNF. To further explore the role of TNF in bladder inflammation and function, we generated a transgenic mouse model with chronic TNF overexpression in urothelium under the control of the uroplakin II (UPII) promoter. Transgenic mouse lines were maintained by backcross onto wild-type C57BL/6J mice and evaluated for pelvic tactile allodynia as a measure of visceral pain, urinary function, and urothelial lesions. TNF mRNA and protein were expressed at greater levels in bladders of UPII-TNF mice than in those of wild-type mice. UPII-TNF mice showed significantly increased urinary frequency and decreased void volume. UPII-TNF mice had increased urothelial apoptosis and loss of urothelial integrity consistent with urothelial lesions. Overexpression of TNF was also associated with pelvic tactile allodynia. Consistent with these findings, UPII-TNF mice exhibited increased bladder afferent activity in response to stretch ex vivo. In summary, UPII-TNF mice display significant pelvic pain, voiding dysfunction, urothelial lesions, and sensory input. Thus UPII-TNF mice are a model for characterizing mechanisms of interstitial cystitis symptoms and evaluating therapies.
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Affiliation(s)
- Wenbin Yang
- Department of Urology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Timothy J Searl
- Pharmacology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Ryan Yaggie
- Department of Urology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Anthony J Schaeffer
- Department of Urology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - David J Klumpp
- Department of Urology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
- Microbiology-Immunology, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
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33
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Wang Z, Hu L, Salari K, Bechis SK, Ge R, Wu S, Rassoulian C, Pham J, Wu CL, Tabatabaei S, Strand DW, Olumi AF. Androgenic to oestrogenic switch in the human adult prostate gland is regulated by epigenetic silencing of steroid 5α-reductase 2. J Pathol 2017; 243:457-467. [PMID: 28940538 DOI: 10.1002/path.4985] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/19/2017] [Accepted: 09/10/2017] [Indexed: 12/25/2022]
Abstract
Benign prostatic hyperplasia is the most common proliferative abnormality of the prostate. All men experience some prostatic growth as they age, but the rate of growth varies among individuals. Steroid 5α-reductase 2 (SRD5A2) is a critical enzyme for prostatic development and growth. Previous work indicates that one-third of adult prostatic samples do not express SRD5A2, secondary to epigenetic modifications. Here we show that the level of oestradiol is dramatically elevated, concomitant with significant upregulation of oestrogen response genes, in prostatic samples with methylation at the SRD5A2 promoter. The phosphorylation of oestrogen receptor-α in prostatic stroma is upregulated when SRD5A2 expression is absent. We show that tumour necrosis factor (TNF)-α suppresses SRD5A2 mRNA and protein expression, and simultaneously promotes expression of aromatase, the enzyme responsible for conversion of testosterone to oestradiol. Concomitant suppression of SRD5A2 and treatment with TNF-α synergistically upregulate the aromatase levels. The data suggest that, in the absence of prostatic SRD5A2, there is an androgenic to oestrogenic switch. These findings have broad implications for choosing appropriate classes of medications for the management of benign and malignant prostatic diseases. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Zongwei Wang
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Libing Hu
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Department of Urology, Yan'an Affiliated hospital of Kunming Medical University, Yunnan, PR China
| | - Keyan Salari
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Seth K Bechis
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Rongbin Ge
- Department of Pathology, University of Massachusetts Medical Center, Worcester, MA, USA
| | - Shulin Wu
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Cyrus Rassoulian
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jonathan Pham
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Chin-Lee Wu
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shahin Tabatabaei
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Douglas W Strand
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Aria F Olumi
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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34
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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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35
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Peixoto LG, Teixeira RR, Vilela DD, Barbosa LN, Caixeta DC, Deconte SR, de Assis de Araújo F, Sabino-Silva R, Espindola FS. Metformin attenuates the TLR4 inflammatory pathway in skeletal muscle of diabetic rats. Acta Diabetol 2017; 54:943-951. [PMID: 28791487 DOI: 10.1007/s00592-017-1027-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/07/2017] [Indexed: 12/22/2022]
Abstract
AIMS Inflammation induced by hyperglycemia triggers the toll-like receptor (TLR) pathway into cells. Our hypothesis was that metformin treatment attenuates the TLR signaling pathways triggered by inflammation in skeletal muscle of hypoinsulinemic/hyperglycemic STZ-induced rats. Thus, we examined TLR signaling under hypoinsulinemia and hyperglycemia conditions and its correlation with insulin resistance in muscle of diabetic rats treated with metformin. METHODS Ten-day diabetic rats were submitted to 7 days of saline (D group) or metformin (500 mg/kg once per day) (D + M group). The skeletal muscle was collected before the insulin tolerance test. Then, Western blotting analysis of skeletal muscle supernatant was probed with TLR4, TLR2, NF-κB, IκB, p-AMPK and p-JNK. TNF-α and CXCL1/KC content was analyzed by ELISA. RESULTS Metformin treatment increased whole-body insulin sensitivity. This regulation was accompanied by a parallel change of p-AMPK and by an inverse regulation of TLR4 and NF-κB contents in the soleus muscle (r = 0.7229, r = -0.8344 and r = -0.7289, respectively, Pearson correlation; p < 0.05). Metformin treatment increased IκB content when compared to D rats. In addition, metformin treatment decreased p-JNK independently of TLR2 signal in diabetic rats. CONCLUSION In summary, the results indicate a relationship between muscular TLR4, p-AMPK and NF-κB content and insulin sensitivity. The study also highlights that in situations of insulin resistance, such as in diabetic subjects, metformin treatment may prevent attenuation of activation of the inflammatory pathway.
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Affiliation(s)
- Leonardo Gomes Peixoto
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Renata Roland Teixeira
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Danielle Diniz Vilela
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Lara Naves Barbosa
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Douglas Carvalho Caixeta
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Simone Ramos Deconte
- Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlândia, MG, Brazil
| | | | - Robinson Sabino-Silva
- Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlândia, MG, Brazil
| | - Foued Salmen Espindola
- Institute of Genetics and Biochemistry (INGEB), Federal University of Uberlandia, Rua Acre, S/N, Bloco 2E, Sala 237, Campus Umuruama, Uberlândia, MG, CEP 38400-902, Brazil.
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Wang Z, Xiao X, Ge R, Li J, Johnson CW, Rassoulian C, Olumi AF. Metformin inhibits the proliferation of benign prostatic epithelial cells. PLoS One 2017; 12:e0173335. [PMID: 28253329 PMCID: PMC5333882 DOI: 10.1371/journal.pone.0173335] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 02/20/2017] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE Benign prostatic hyperplasia (BPH) is the most common proliferative abnormality of the prostate affecting elderly men throughout the world. Epidemiologic studies have shown that diabetes significantly increases the risk of developing BPH, although whether anti-diabetic medications preventing the development of BPH remains to be defined. We have previously found that stromally expressed insulin-like growth factor 1 (IGF-1) promotes benign prostatic epithelial cell proliferation through paracrine mechanisms. Here, we seek to understand if metformin, a first line medication for the treatment of type 2 diabetes, inhibits the proliferation of benign prostatic epithelial cells through reducing the expression of IGF-1 receptor (IGF-1R) and regulating cell cycle. METHODS BPE cell lines BPH-1 and P69, murine fibroblasts3T3 and primary human prostatic fibroblasts were cultured and tested in this study. Cell proliferation and the cell cycle were analyzed by MTS assay and flow cytometry, respectively. The expression of IGF-1R was determined by western-blot and immunocytochemistry. The level of IGF-1 secretion in culture medium was measured by ELISA. RESULTS Metformin (0.5-10mM, 6-48h) significantly inhibited the proliferation of BPH-1 and P69 cells in a dose-dependent and time-dependent manner. Treatment with metformin for 24 hours lowered the G2/M cell population by 43.24% in P69 cells and 24.22% in BPH-1 cells. On the other hand, IGF-1 (100ng/mL, 24h) stimulated the cell proliferation (increased by 28.81% in P69 cells and 20.95% in BPH-1 cells) and significantly enhanced the expression of IGF-1R in benign prostatic epithelial cells. Metformin (5mM) abrogated the proliferation of benign prostatic epithelial cells induced by IGF-1. In 3T3 cells, the secretion of IGF-1 was significantly inhibited by metformin from 574.31pg/ml to 197.61pg/ml. The conditioned media of 3T3 cells and human prostatic fibroblasts promoted the proliferation of epithelial cells and the expression of IGF-1R in epithelial cells. Metformin abrogated the proliferation of benign prostatic epithelial cells promoted by 3T3 conditioned medium. CONCLUSIONS Our study demonstrates that metformin inhibits the proliferation of benign prostatic epithelial cells by suppressing the expression of IGF-1R and IGF-1 secretion in stromal cells. Metformin lowers the G2/M cell population and simultaneously increases the G0/G1 population. Findings here might have significant clinical implications in management of BPH patients treated with metformin.
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Affiliation(s)
- Zongwei Wang
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Xingyuan Xiao
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Urology, Wuhan Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Rongbin Ge
- Department of Pathology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Jijun Li
- Shanghai Children 's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Cameron W. Johnson
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Cyrus Rassoulian
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Aria F. Olumi
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
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37
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Wróbel A, Doboszewska U, Rechberger E, Rojek K, Serefko A, Poleszak E, Skalicka-Woźniak K, Dudka J, Wlaź P. Rho kinase inhibition ameliorates cyclophosphamide-induced cystitis in rats. Naunyn Schmiedebergs Arch Pharmacol 2017; 390:613-619. [PMID: 28220212 PMCID: PMC5411406 DOI: 10.1007/s00210-017-1361-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/07/2017] [Indexed: 11/22/2022]
Abstract
Hemorrhagic cystitis often develops in patients treated with cyclophosphamide (CYP). Studies have indicated that Rho kinase (ROCK) inhibitors may suppress detrusor overactivity symptoms and possess anti-inflammatory properties. The aim of the present study was to investigate whether inhibition of ROCK reduces cystometric and histopathological changes associated with CYP-induced cystitis. The rats received GSK 269962, a ROCK inhibitor, at a dose of 30 mg/kg daily, or vehicle for 7 days. Then, acute chemical cystitis leading to bladder overactivity was induced by CYP injection (200 mg/kg i.p.). Following CYP injection, cystometric studies with physiological saline were performed. Moreover, bladder edema (by the Evans Blue dye leakage technique) and urothelium thickness were measured. CYP injection resulted in a significant increase in cystometric parameters: basal pressure, threshold pressure, bladder contraction duration, relaxation time, detrusor overactivity index, non-voiding contractions amplitude, and non-voiding contractions frequency as well as increased Evans Blue extravasation into bladder tissue, whereas micturition voiding pressure, voided volume, post-void residual, volume threshold, intercontraction interval, bladder compliance, and volume threshold to elicit non-voiding contractions as well as urothelium thickness were significantly decreased in CYP-injected rats. Administration of GSK 269962 normalized the abovementioned CYP injection-induced changes. Inhibition of ROCK was found to ameliorate CYP-induced detrusor overactivity and bladder inflammation. Our data indicate uroprotective effects following ROCK inhibition, which further suggests that this strategy may become an interesting pharmacological tool to prevent urinary adverse effects in patients treated with chemotherapy using CYP.
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Affiliation(s)
- Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland.
| | - Urszula Doboszewska
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, 20-033, Lublin, Poland
| | - Ewa Rechberger
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Karol Rojek
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Anna Serefko
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Ewa Poleszak
- Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Krystyna Skalicka-Woźniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Jarosław Dudka
- Department of Toxicology, Medical University of Lublin, Jaczewskiego 8b, 20-093, Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, 20-033, Lublin, Poland
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38
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Gheinani AH, Kiss B, Moltzahn F, Keller I, Bruggmann R, Rehrauer H, Fournier CA, Burkhard FC, Monastyrskaya K. Characterization of miRNA-regulated networks, hubs of signaling, and biomarkers in obstruction-induced bladder dysfunction. JCI Insight 2017; 2:e89560. [PMID: 28138557 DOI: 10.1172/jci.insight.89560] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Bladder outlet obstruction (BOO) induces significant organ remodeling, leading to lower urinary tract symptoms accompanied by urodynamic changes in bladder function. Here, we report mRNA and miRNA transcriptome sequencing of bladder samples from human patients with different urodynamically defined states of BOO. Patients' miRNA and mRNA expression profiles correlated with urodynamic findings. Validation of RNA sequencing results in an independent patient cohort identified combinations of 3 mRNAs (NRXN3, BMP7, UPK1A) and 3 miRNAs (miR-103a-3p, miR-10a-5p, miR-199a-3p) sufficient to discriminate between bladder functional states. All BOO patients shared cytokine and immune response pathways, TGF-β and NO signaling pathways, and hypertrophic PI3K/AKT signaling pathways. AP-1 and NFkB were dominant transcription factors, and TNF-α was the top upstream regulator. Integrated miRNA-mRNA expression analysis identified pathways and molecules targeted by differentially expressed miRNAs. Molecular changes in BOO suggest an increasing involvement of miRNAs in the control of bladder function from the overactive to underactive/acontractile states.
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Affiliation(s)
- Ali Hashemi Gheinani
- Urology Research Laboratory, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Bernhard Kiss
- Department of Urology, University Hospital, Bern, Switzerland
| | - Felix Moltzahn
- Department of Urology, University Hospital, Bern, Switzerland
| | - Irene Keller
- Interfaculty Bioinformatics Unit, University of Bern, Bern, Switzerland
| | - Rémy Bruggmann
- Interfaculty Bioinformatics Unit, University of Bern, Bern, Switzerland
| | | | | | | | - Katia Monastyrskaya
- Urology Research Laboratory, Department of Clinical Research, University of Bern, Bern, Switzerland.,Department of Urology, University Hospital, Bern, Switzerland
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Daneshgari F, Liu G, Hanna-Mitchell AT. Path of translational discovery of urological complications of obesity and diabetes. Am J Physiol Renal Physiol 2017; 312:F887-F896. [PMID: 28052873 DOI: 10.1152/ajprenal.00489.2016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/15/2016] [Accepted: 01/01/2017] [Indexed: 01/07/2023] Open
Abstract
Diabetes mellitus (DM) is a prevalent chronic disease. Type 1 DM (T1DM) is a metabolic disorder that is characterized by hyperglycemia in the context of absolute lack of insulin, whereas type 2 DM (T2DM) is due to insulin resistance-related relative insulin deficiency. In comparison with T1DM, T2DM is more complex. The natural history of T2DM in most patients typically involves a course of obesity to impaired glucose tolerance, to insulin resistance, to hyperinsulinemia, to hyperglycemia, and finally to insulin deficiency. Obesity is a risk factor of T2DM. Diabetes causes some serious microvascular and macrovascular complications, such as retinopathy, nephropathy, neuropathy, angiopathy and stroke. Urological complications of obesity and diabetes (UCOD) affect quality of life, but are not well investigated. The urological complications in T1DM and T2DM are different. In addition, obesity itself affects the lower urinary tract. The aim of this perspective is to review the available data, combined with the experience of our research teams, who have spent a good part of last decade on studies of association between DM and lower urinary tract symptoms (LUTS) with the aim of bringing more focus to the future scientific exploration of UCOD. We focus on the most commonly seen urological complications, urinary incontinence, bladder dysfunction, and LUTS, in obesity and diabetes. Knowledge of these associations will lead to a better understanding of the pathophysiology underlying UCOD and hopefully assist urologists in the clinical management of obese or diabetic patients with LUTS.
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Affiliation(s)
- Firouz Daneshgari
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
| | - Ann T Hanna-Mitchell
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio
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40
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Zhang XM, Guo L, Huang X, Li QM, Chi MH. 4-Hydroxynonenal Regulates TNF-α Gene Transcription Indirectly via ETS1 and microRNA-29b in Human Adipocytes Induced From Adipose Tissue-Derived Stromal Cells. Anat Rec (Hoboken) 2016; 299:1145-52. [PMID: 27164408 DOI: 10.1002/ar.23371] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/15/2016] [Accepted: 03/18/2016] [Indexed: 12/18/2022]
Abstract
Obesity is characterized by an accumulation of excessive body fat and can be diagnosed by a variety of measures, such as BMI. However, in some obese individuals, oxidative stress is also thought to be an important pathogenic mechanism of obesity-associated metabolic syndrome. Oxidative stress increases the lipid peroxidation product, 4-hydroxynonenal (4-HNE), which is one of the most abundant and active lipid peroxides. Within the adipose tissue, adipocytes are derived from adipose tissue-derived stromal cells (ADSCs), which play a key role in the generation and metabolism of adipose tissue. Additionally, obesity is associated with low-grade inflammation. Specific microRNAs (miRNAs) that regulate obesity-associated inflammation are largely dysregulated in metabolic syndrome (MS). In this study, we aim to confirm whether 4-HNE and miRNAs play a role in the regulation of TNF-α gene transcription. We enrolled six obese individuals who were referred to Harbin Medical University (Heilongjiang, China) and six nonobese control participants. Plasma 4-HNE levels of the 12 subjects were determined by ELISA. Using qRT-PCR, we measured ETS1, miR-29b, SP1, and TNF-α levels in subcutaneous white adipose tissue (WAT). Furthermore, we examined the relationship between ETS1 and TNF-α using a luciferase reporter assay and a ChIP assay. Our results suggest that ETS1 promotes TNF-α gene transcription in adipocytes. In addition, we demonstrated that 4-HNE promotes TNF-α gene transcription through the inhibition of the miR-29b → SP1 → TNF-α pathway and promotion of the ETS1 → TNF-α pathway. Anat Rec, 299:1145-1152, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Xi-Mei Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Lin Guo
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Xiang Huang
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Qiu-Ming Li
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Mei-Hua Chi
- Teaching Experiment Center of Morphology, Harbin Medical University, Harbin, 150081, People's Republic of China
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41
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Wu L, Zhang X, Xiao N, Huang Y, Kavran M, Elrashidy RA, Wang M, Daneshgari F, Liu G. Functional and morphological alterations of the urinary bladder in type 2 diabetic FVB(db/db) mice. J Diabetes Complications 2016; 30:778-85. [PMID: 27037041 PMCID: PMC4912852 DOI: 10.1016/j.jdiacomp.2016.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 03/04/2016] [Accepted: 03/05/2016] [Indexed: 10/22/2022]
Abstract
AIMS Diabetic bladder dysfunction (DBD) has been extensively studied in animal models of type 1 diabetes. We aimed to examine the functional and morphological alterations of the urinary bladder in a type 2 diabetes model, FVB(db/db) mice. METHODS FVB(db/db) mice and age-matched FVB/NJ control mice were tested at either 12, 24 or 52weeks of age. Body weight, blood glucose and glycated hemoglobin (HbA1c) levels were measured. Bladder function was assessed by measurement of 24-h urination behavior and conscious cystometry. Bladder was harvested for Masson's Trichrome staining and morphometric analysis. RESULTS The body weights of FVB(db/db) mice were twice as those of FVB/NJ control mice. The blood glucose and HbA1c levels were higher in FVB(db/db) mice at 12 and 24weeks, but not at 52weeks. A significant increase in the mean volume per void, but decrease in the voiding frequency, in FVB(db/db) mice was observed. Cystometry evaluation showed increased bladder capacity, voided volume, and peak micturition pressure in FVB(db/db) mice compared with FVB/NJ mice. Morphometric analysis revealed a significant increase in the areas of detrusor muscle and urothelium in FVB(db/db) mice. In addition, some FVB(db/db) mice, especially males at 12 and 24weeks, showed small-volume voiding during 24-h urination behavior measurement, and detrusor overactivity in the cystometry measurement. CONCLUSIONS The FVB(db/db) mouse, displaying DBD characterized by not only increased bladder capacity, void volume, and micturition pressure, but also bladder overactivity, is a useful model to further investigate the mechanisms of type 2 diabetes-related bladder dysfunction.
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Affiliation(s)
- Liyang Wu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, PRC
| | - Xiaodong Zhang
- Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, PRC
| | - Nan Xiao
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Urology, Lanzhou University Second Hospital, Lanzhou, PRC
| | - Yexiang Huang
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Urology, The First Affiliated Hospital, China Medical University, Shenyang, PRC
| | - Michael Kavran
- Department of Urology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Rania A Elrashidy
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Mingshuai Wang
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, PRC
| | - Firouz Daneshgari
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA.
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Alexandre EC, Calmasini FB, de Oliveira MG, Silva FH, da Silva CPV, André DM, Leonardo FC, Delbin MA, Antunes E. Chronic treatment with resveratrol improves overactive bladder in obese mice via antioxidant activity. Eur J Pharmacol 2016; 788:29-36. [PMID: 27316789 DOI: 10.1016/j.ejphar.2016.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 06/04/2016] [Accepted: 06/13/2016] [Indexed: 01/24/2023]
Abstract
The objective of the present work was to evaluate whether oral intake with resveratrol ameliorates overactive bladder in high-fat fed mice. Male C57BL6 mice fed with standard chow or high-fat diet to induce obesity received a two-week therapy with resveratrol (100mg/kg, given as a daily gavage). Weight and metabolic profile, together with cystometry and in vitro bladder contractions were evaluated. Measurements of gp91phox and SOD1 mRNA expressions and reactive-oxygen species (ROS) in bladder tissues, and serum TBARS were performed. Obese mice exhibited increases in body weight and epididymal fat mass, which were significantly reduced by oral treatment with resveratrol. Cystometric study in obese mice showed increases in non-voiding contractions, post-voiding pressure and voiding frequency that were reversed by resveratrol treatment. Likewise, the in vitro bladder overactivity in response to electrical-field stimulation (80V, 1-32Hz) or carbachol (1nM to 10mM) were normalized by resveratrol. The gp91phox and SOD1 mRNA expressions in bladder tissues were markedly higher in obese mice compared with lean group. In addition, ROS levels in bladder tissues and serum lipid peroxidation (TBARS assay) were markedly higher in obese compared with lean mice, all of which were reduced by resveratrol treatment. In lean group, resveratrol had no effect in any parameter evaluated. Our results show that two-week therapy of obese mice with resveratrol reduces the systemic and bladder oxidative stress, and greatly ameliorated the cystometry alterations and in vitro bladder overactivity. Resveratrol treatment could be an option to prevent obesity-associated overactive bladder.
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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
| | - Mariana G de Oliveira
- 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
| | - Carmem P V da Silva
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas 13083-862, Brazil
| | - Diana M André
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil
| | - Flávia C Leonardo
- Hematology and Hemotherapy Center, University of Campinas (UNICAMP), Campinas 13083-878, Brazil
| | - Maria A Delbin
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas 13083-862, Brazil
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, Brazil.
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Abstract
Stem cell therapy holds the potential to revolutionize the treatment of a number of chronic conditions. Stem cells ability to home in on injured sites of the body, stimulate angiogenesis, tissue regeneration, immunomodulation, anti-inflammatory, and anti-fibrotic factors have attracted their use in the treatment of many conditions. Urology has registered one of the highest experimental successes using stem cell therapy. However, the rate of clinical applications is comparatively lower. This review takes a look at our efforts so far and what needs to be done in order to maximize the clinical benefit we can derive from stem cells.
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Affiliation(s)
- Bridget Wiafe
- 3-007 Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada, T6G 2E1.
| | | | - Adetola B Adesida
- 3-002E Li Ka Shing Centre for Health Research Innovation, University of Alberta, Edmonton, AB, Canada, T6G 2E1.
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44
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Ma E, Vetter J, Bliss L, Lai HH, Mysorekar IU, Jain S. A multiplexed analysis approach identifies new association of inflammatory proteins in patients with overactive bladder. Am J Physiol Renal Physiol 2016; 311:F28-34. [PMID: 27029431 DOI: 10.1152/ajprenal.00580.2015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/27/2016] [Indexed: 12/30/2022] Open
Abstract
Overactive bladder (OAB) is a common debilitating bladder condition with unknown etiology and limited diagnostic modalities. Here, we explored a novel high-throughput and unbiased multiplex approach with cellular and molecular components in a well-characterized patient cohort to identify biomarkers that could be reliably used to distinguish OAB from controls or provide insights into underlying etiology. As a secondary analysis, we determined whether this method could discriminate between OAB and other chronic bladder conditions. We analyzed plasma samples from healthy volunteers (n = 19) and patients diagnosed with OAB, interstitial cystitis/bladder pain syndrome (IC/BPS), or urinary tract infections (UTI; n = 51) for proinflammatory, chemokine, cytokine, angiogenesis, and vascular injury factors using Meso Scale Discovery (MSD) analysis and urinary cytological analysis. Wilcoxon rank-sum tests were used to perform univariate and multivariate comparisons between patient groups (controls, OAB, IC/BPS, and UTI). Multivariate logistic regression models were fit for each MSD analyte on 1) OAB patients and controls, 2) OAB and IC/BPS patients, and 3) OAB and UTI patients. Age, race, and sex were included as independent variables in all multivariate analysis. Receiver operating characteristic (ROC) curves were generated to determine the diagnostic potential of a given analyte. Our findings demonstrate that five analytes, i.e., interleukin 4, TNF-α, macrophage inflammatory protein-1β, serum amyloid A, and Tie2 can reliably differentiate OAB relative to controls and can be used to distinguish OAB from the other conditions. Together, our pilot study suggests a molecular imbalance in inflammatory proteins may contribute to OAB pathogenesis.
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Affiliation(s)
- Emily Ma
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri
| | - Joel Vetter
- Division of Urologic Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri; and
| | - Laura Bliss
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - H Henry Lai
- Division of Urologic Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri; and Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri
| | - Indira U Mysorekar
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Sanjay Jain
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri; Renal Division, Internal Medicine, Washington University School of Medicine, St. Louis, Missouri;
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45
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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.
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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
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Zhu X, Jiang S, Hu N, Luo F, Dong H, Kang YM, Jones KR, Zou Y, Xiong L, Ren J. Tumour necrosis factor-α inhibition with lenalidomide alleviates tissue oxidative injury and apoptosis in ob/ob obese mice. Clin Exp Pharmacol Physiol 2015; 41:489-501. [PMID: 24739012 DOI: 10.1111/1440-1681.12240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 04/08/2014] [Accepted: 04/09/2014] [Indexed: 12/28/2022]
Abstract
Lenalidomide (Revlimid; Selleck Chemicals, Houston, TX, USA), an analogue of thalidomide, possesses potent cytokine modulatory capacity through inhibition of cytokines such as tumour necrosis factor (TNF)-α, a cytokine pivotal for the onset and development of complications in obesity and diabetes mellitus. The present study was designed to evaluate the effect of lenalidomide on oxidative stress, protein and DNA damage in multiple organs in an ob/ob murine model of obesity. To this end, C57BL/6 lean and ob/ob obese mice were administered lenalidomide (50 mg/kg per day, p.o.) for 5 days. Oxidative stress, protein and DNA damage were assessed using the conversion of reduced glutathione (GSH) to oxidized glutathione (GSSG), carbonyl formation and Comet assay, respectively. Apoptosis was evaluated using caspase 3 activity, and levels of Bax, Bcl-2, Bip, caspase 8, caspase 9 and TNF-α were assessed using western blot analysis. Lenalidomide treatment did not affect glucose clearance in lean or ob/ob mice. Obese mice exhibited a reduced GSH/GSSG ratio in the liver, gastrocnemius skeletal muscle and small intestine, as well as enhanced protein carbonyl formation, DNA damage and caspase 3 activity in the liver, kidney, skeletal muscle and intestine; these effects were alleviated by lenalidomide, with the exception of obesity-associated DNA damage in the liver and kidney. Western blot analysis revealed elevated TNF-α, Bax, Bcl-2, Bip, caspase 8 and caspase 9 in ob/ob mice with various degrees of reversal by lenalidomide treatment. Together, these data indicate that lenalidomide protects against obesity-induced tissue injury and protein damage, possibly in association with antagonism of cytokine production and cytokine-induced apoptosis and oxidative stress.
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Affiliation(s)
- Xiaoling Zhu
- Department of Anaesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, USA
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Tomechko SE, Liu G, Tao M, Schlatzer D, Powell CT, Gupta S, Chance MR, Daneshgari F. Tissue specific dysregulated protein subnetworks in type 2 diabetic bladder urothelium and detrusor muscle. Mol Cell Proteomics 2015; 14:635-45. [PMID: 25573746 DOI: 10.1074/mcp.m114.041863] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus is well known to cause bladder dysfunction; however, the molecular mechanisms governing this process and the effects on individual tissue elements within the bladder are poorly understood, particularly in type 2 diabetes. A shotgun proteomics approach was applied to identify proteins differentially expressed between type 2 diabetic (TallyHo) and control (SWR/J) mice in the bladder smooth muscle and urothelium, separately. We were able to identify 1760 nonredundant proteins from the detrusor smooth muscle and 3169 nonredundant proteins from urothelium. Pathway and network analysis of significantly dysregulated proteins was conducted to investigate the molecular processes associated with diabetes. This pinpointed ERK1/2 signaling as a key regulatory node in the diabetes-induced pathophysiology for both tissue types. The detrusor muscle samples showed diabetes-induced increased tissue remodeling-type events such as Actin Cytoskeleton Signaling and Signaling by Rho Family GTPases. The diabetic urothelium samples exhibited oxidative stress responses, as seen in the suppression of protein expression for key players in the NRF2-Mediated Oxidative Stress Response pathway. These results suggest that diabetes induced elevated inflammatory responses, oxidative stress, and tissue remodeling are involved in the development of tissue specific diabetic bladder dysfunctions. Validation of signaling dysregulation as a function of diabetes was performed using Western blotting. These data illustrated changes in ERK1/2 phosphorylation as a function of diabetes, with significant decreases in diabetes-associated phosphorylation in urothelium, but the opposite effect in detrusor muscle. These data highlight the importance of understanding tissue specific effects of disease process in understanding pathophysiology in complex disease and pave the way for future studies to better understand important molecular targets in reversing bladder dysfunction.
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Affiliation(s)
| | - Guiming Liu
- §Urology Institute, University Hospitals Case Medical Center and Department of Urology, Case Western Reserve University School of Medicine, Cleveland, Ohio, 44106
| | - Mingfang Tao
- §Urology Institute, University Hospitals Case Medical Center and Department of Urology, Case Western Reserve University School of Medicine, Cleveland, Ohio, 44106
| | | | - C Thomas Powell
- §Urology Institute, University Hospitals Case Medical Center and Department of Urology, Case Western Reserve University School of Medicine, Cleveland, Ohio, 44106
| | - Sanjay Gupta
- §Urology Institute, University Hospitals Case Medical Center and Department of Urology, Case Western Reserve University School of Medicine, Cleveland, Ohio, 44106
| | | | - Firouz Daneshgari
- §Urology Institute, University Hospitals Case Medical Center and Department of Urology, Case Western Reserve University School of Medicine, Cleveland, Ohio, 44106
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Tyagi P, Smith PP, Kuchel GA, de Groat WC, Birder LA, Chermansky CJ, Adam RM, Tse V, Chancellor MB, Yoshimura N. Pathophysiology and animal modeling of underactive bladder. Int Urol Nephrol 2014; 46 Suppl 1:S11-21. [PMID: 25238890 DOI: 10.1007/s11255-014-0808-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 07/17/2014] [Indexed: 12/17/2022]
Abstract
While the symptomology of underactive bladder (UAB) may imply a primary dysfunction of the detrusor muscle, insights into pathophysiology indicate that both myogenic and neurogenic mechanisms need to be considered. Due to lack of proper animal models, the current understanding of the UAB pathophysiology is limited, and much of what is known about the clinical etiology of the condition has been derived from epidemiological data. We hereby review current state of the art in the understanding of the pathophysiology of and animal models used to study the UAB.
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Affiliation(s)
- Pradeep Tyagi
- Department of Urology, University of Pittsburgh, Pittsburgh, PA, USA
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Ameliorative effect of saffron aqueous extract on hyperglycemia, hyperlipidemia, and oxidative stress on diabetic encephalopathy in streptozotocin induced experimental diabetes mellitus. BIOMED RESEARCH INTERNATIONAL 2014; 2014:920857. [PMID: 25114929 PMCID: PMC4119909 DOI: 10.1155/2014/920857] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/08/2014] [Indexed: 01/23/2023]
Abstract
Diabetic encephalopathy is one of the severe complications in patients with diabetes mellitus. Findings indicate that saffron extract has antioxidant properties but its underlying beneficial effects on diabetic encephalopathy were unclear. In the present study, the protective activities of saffron were evaluated in diabetic encephalopathy. Saffron at 40 and 80 mg/kg significantly increased body weight and serum TNF-α and decreased blood glucose levels, glycosylated serum proteins, and serum advanced glycation endproducts (AGEs) levels. Furthermore, significant increase in HDL and decrease (P<0.05) in cholesterol, triglyceride, and LDL were observed after 28 days of treatment. At the end of experiments, the hippocampus tissue was used for determination of glutathione content (GSH), superoxide dismutase (SOD), and catalase (CAT) activities. Furthermore, saffron significantly increased GSH, SOD, and CAT but remarkably decreased cognitive deficit, serum TNF-α, and induced nitric oxide synthase (iNOS) activity in hippocampus tissue. Our findings indicated that saffron extract may reduce hyperglycemia and hyperlipidemia risk and also reduce the oxidative stress in diabetic encephalopathy rats. This study suggested that saffron extract might be a promising candidate for the improvement of chemically induced diabetes and its complications.
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50
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Fan EWC, Chen LJ, Cheng JT, Tong YC. Changes of urinary bladder contractility in high-fat diet-fed mice: The role of tumor necrosis factor-α. Int J Urol 2014; 21:831-5. [DOI: 10.1111/iju.12428] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 02/04/2014] [Indexed: 01/10/2023]
Affiliation(s)
- Eric Wen-Chou Fan
- Division of Urology; Department of Surgery; Chi-Mei Medical Center; Tainan Taiwan
| | - Li-Jen Chen
- Institute of Basic Medical Sciences; College of Medicine; National Cheng Kung University; Tainan Taiwan
| | - Juei-Tang Cheng
- Institute of Medical Science; College of Health Science; Chang Jung Christian University; Tainan Taiwan
- Department of Medical Research; Chi-Mei Medical Center; Tainan Taiwan
| | - Yat-Ching Tong
- Department of Urology; Medical College and Hospital; National Cheng Kung University; Tainan Taiwan
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