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Zhang W, Dao JJ, Li Q, Liu C, Qiao CM, Cui C, Shen YQ, Zhao WJ. Neuregulin 1 mitigated prolactin deficiency through enhancing TRPM8 signaling under the influence of melatonin in senescent pituitary lactotrophs. Int J Biol Macromol 2024; 275:133659. [PMID: 38969045 DOI: 10.1016/j.ijbiomac.2024.133659] [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: 03/22/2024] [Revised: 07/02/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
The age-related alterations in pituitary function, including changes in prolactin (PRL) production contributes to the systemic susceptibility to age-related diseases. Our previous research has shown the involvement of Nrg1 in regulating the expression and secretion of PRL. However, the precise role of Nrg1 in mitigating the senescence of pituitary lactotrophs and the underlying mechanisms are yet to be comprehended. Here, data from the GEPIA database was used to evaluate the association between transient receptor potential cation channel subfamily M member 8 (TRPM8) and PRL in normal human pituitary tissues, followed by immunofluorescence verification using a human pituitary tissue microarray. TRPM8 levels showed a significant positive association with PRL expression in normal human pituitary tissues, and both TRPM8 and PRL levels declined during aging, suggesting that TRPM8 may regulate pituitary aging by affecting PRL production. It was also found that treatment with exogenous neuregulin 1 (Nrg1) markedly delayed the senescence of GH3 cells (rat lactotroph cell line) generated by D-galactose (D-gal). In addition, melatonin reduced the levels of senescence-related markers in senescent pituitary cells by promoting Nrg1 / ErbB4 signaling, stimulating PRL expression and secretion. Further investigation showed that Nrg1 attenuated senescence in pituitary cells by increasing TRPM8 expression. Downregulation of TRPM8 activation eliminated Nrg1-mediated amelioration of pituitary cell senescence. These findings demonstrate the critical function of Nrg1 / ErbB signaling in delaying pituitary lactotroph cell senescence and enhancing PRL production via promoting TRPM8 expression under the modulation of melatonin.
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Affiliation(s)
- Wei Zhang
- Cell Biology Department, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China; Department of Pathogen Biology, Guizhou Nursing Vocational College, Guiyang 550000, Guizhou, China
| | - Ji-Ji Dao
- Cell Biology Department, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Qian Li
- Cell Biology Department, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Chong Liu
- Cell Biology Department, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Chen-Meng Qiao
- Department of Neurodegeneration and Neuroinjury, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Chun Cui
- Department of Neurodegeneration and Neuroinjury, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Yan-Qin Shen
- Department of Neurodegeneration and Neuroinjury, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China
| | - Wei-Jiang Zhao
- Cell Biology Department, Wuxi School of Medicine, Jiangnan University, 214122 Wuxi, Jiangsu, China.
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Mohammad A, Laboulaye MA, Shenhar C, Dobberfuhl AD. Mechanisms of oxidative stress in interstitial cystitis/bladder pain syndrome. Nat Rev Urol 2024; 21:433-449. [PMID: 38326514 DOI: 10.1038/s41585-023-00850-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2023] [Indexed: 02/09/2024]
Abstract
Interstitial cystitis/bladder pain syndrome (IC/BPS) is characterized by bladder and/or pelvic pain, increased urinary urgency and frequency and nocturia. The pathophysiology of IC/BPS is poorly understood, and theories include chronic inflammation, autoimmune dysregulation, bacterial cystitis, urothelial dysfunction, deficiency of the glycosaminoglycan (GAG) barrier and urine cytotoxicity. Multiple treatment options exist, including behavioural interventions, oral medications, intravesical instillations and procedures such as hydrodistension; however, many clinical trials fail, and patients experience an unsatisfactory treatment response, likely owing to IC/BPS phenotype heterogeneity and the use of non-targeted interventions. Oxidative stress is implicated in the pathogenesis of IC/BPS as reactive oxygen species impair bladder function via their involvement in multiple molecular mechanisms. Kinase signalling pathways, nociceptive receptors, mast-cell activation, urothelial dysregulation and circadian rhythm disturbance have all been linked to reactive oxygen species and IC/BPS. However, further research is necessary to fully uncover the role of oxidative stress in the pathways driving IC/BPS pathogenesis. The development of new models in which these pathways can be manipulated will aid this research and enable further investigation of promising therapeutic targets.
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Affiliation(s)
- Ashu Mohammad
- Department of Urology, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Mallory A Laboulaye
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Chen Shenhar
- Department of Urology, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Amy D Dobberfuhl
- Department of Urology, Stanford University School of Medicine, Palo Alto, CA, USA.
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3
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Cao S, Meng L, Lin L, Hu X, Li X. The association between the metabolic score for insulin resistance (METS-IR) index and urinary incontinence in the United States: results from the National Health and Nutrition Examination Survey (NHANES) 2001-2018. Diabetol Metab Syndr 2023; 15:248. [PMID: 38041100 PMCID: PMC10693039 DOI: 10.1186/s13098-023-01226-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023] Open
Abstract
BACKGROUND The association between insulin resistance and urinary incontinence (UI) has not been investigated widely. The purpose of this study is to assess the relationship between a novel indicator for assessing insulin resistance the metabolic score for insulin resistance (METS-IR) index and urinary incontinence (UI). METHODS This study utilized data from National Health and Nutrition Examination Survey (NHANES) 2001-2018. Weighted multivariable logistic regression models were conducted to explore the association of METS-IR index with three types of UI [stress UI (SUI), urgency UI (UUI), and mixed UI (MUI)]. Smooth curve fitting was utilized to investigate the linear relationship. Subgroup analysis was used to examine the stability of the connection between METS-IR index and UI in different stratifications. RESULTS A total of 17,474 participants were included in this study, of whom 23.76% had SUI, 20.05% had UUI, and 9.59% had MUI. METS-IR index was positively associated with three types of UI with full adjustment [SUI: odds ratio (OR) = 1.023, 95% confidence interval (CI) 1.019-1.027; UUI: OR = 1.015, 95% CI 1.011-1.019; MUI: OR = 1.020, 95% CI 1.016-1.025, all p < 0.001]. After transferring METS-IR index into a categorical variable by quartiles, the positive connection between METS-IR index and UI was still observed in the highest METS-IR group compared to the lowest METS-IR interval (SUI: OR = 2.266, 95% CI 1.947-2.637, p < 0.001; UUI: OR = 1.534, 95% CI 1.344-1.750, p < 0.001; MUI: OR = 2.044, 95% CI 1.707-2.448, p < 0.001). The analysis of smooth curves fitting showed that METS-IR index was positively linearly related to three types of UI. Moreover, the association between METS-IR index and SUI was more significant in females compared to males (p for interaction < 0.05). CONCLUSION An elevated METS-IR index was related to increased risks of three types of UI (SUI, UUI, and MUI) in the United States population. METS-IR index was more significantly connected to SUI in females than males. The association between insulin resistance and UI needs to be explored with more studies.
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Affiliation(s)
- Shangqi Cao
- Institute of Urology, Department of Urology, West China Medical School, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu, 610041, China
| | - Linghao Meng
- Institute of Urology, Department of Urology, West China Medical School, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu, 610041, China
| | - Lede Lin
- Institute of Urology, Department of Urology, West China Medical School, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu, 610041, China
| | - Xu Hu
- Institute of Urology, Department of Urology, West China Medical School, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu, 610041, China.
| | - Xiang Li
- Institute of Urology, Department of Urology, West China Medical School, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu, 610041, China.
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4
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Ramsay S, Zagorodnyuk V. Role of circadian rhythms and melatonin in bladder function in heath and diseases. Auton Neurosci 2023; 246:103083. [PMID: 36871511 DOI: 10.1016/j.autneu.2023.103083] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/23/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023]
Abstract
The circadian system modulates all visceral organ physiological processes including urine storage and voiding. The "master clock" of the circadian system lies within suprachiasmatic nucleus of the hypothalamus while "peripheral clocks" are found in most peripheral tissue and organs, including the urinary bladder. Disruptions of circadian rhythms can cause organ malfunction and disorder or exacerbate pre-existing ones. It has been suggested that nocturia, which develops mostly in the elderly, could be a circadian-related disorder of the bladder. In the bladder, many types of gap junctions and ion channels in the detrusor, urothelium and sensory nerves are likely under strict local peripheral circadian control. The pineal hormone, melatonin, is a circadian rhythm synchroniser capable of controlling a variety of physiological processes in the body. Melatonin predominantly acts via the melatonin 1 and melatonin 2 G-protein coupled receptors expressed in the central nervous system, and many peripheral organs and tissues. Melatonin could be beneficial in the treatment of nocturia and other common bladder disorders. The ameliorating action of melatonin on bladder function is likely due to multiple mechanisms which include central effects on voiding and peripheral effects on the detrusor and bladder afferents. More studies are warranted to determine the precise mechanisms of circadian rhythm coordination of the bladder function and melatonin influences on the bladder in health and diseases.
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Affiliation(s)
- Stewart Ramsay
- Discipline of Human Physiology, Flinders Health & Medical Research Institute, College of Medicine and Public Health, Flinders University, South Australia, Australia
| | - Vladimir Zagorodnyuk
- Discipline of Human Physiology, Flinders Health & Medical Research Institute, College of Medicine and Public Health, Flinders University, South Australia, Australia.
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5
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Melatonin inhibits muscular-mucosal stretch-sensitive bladder afferents via the MT2 receptors. Sci Rep 2022; 12:17686. [PMID: 36271291 PMCID: PMC9586995 DOI: 10.1038/s41598-022-22705-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/18/2022] [Indexed: 01/18/2023] Open
Abstract
Melatonin is a circadian rhythm regulator capable of controlling a variety of physiological processes in the body. It predominantly acts via the melatonin 1 (MT1) and MT2 receptors expressed in the CNS neurons and peripheral organs and tissues. Melatonin can modulate urinary bladder function, however, to date it is not known if melatonin can regulate activity of sensory neurons innervating the bladder. Bladder afferents play an important role in urine storage and voiding. Therefore, this study aims to determine if melatonin can regulate mechanosensitivity of 2 major classes of sensory neurons in the guinea pig bladder: stretch-insensitive mucosal and low threshold stretch-sensitive muscular-mucosal afferents. The effects of melatonin on the mechanosensitivity of mucosal and muscular-mucosal afferents were measured ex vivo using single unit extracellular recording. Melatonin did not affect the responses of mucosal afferents to stroking of their receptive fields but did concentration-dependently, significantly inhibit 69% of muscular-mucosal afferents responses to stroking and bladder stretch. This inhibitory effect was not affected by the MT1 receptor antagonist, S26131 but was blocked by the selective MT2 receptor antagonists, K-185 and 4-P-PDOT. Forskolin significantly potentiated the responses of muscular-mucosal afferents to stroking and stretch, which were prevented by melatonin. These findings demonstrate a direct inhibitory effect of melatonin on the mechanosensitivity of low threshold stretch-sensitive muscular-mucosal bladder afferents acting via MT2 receptors, which is independent from its action on detrusor muscle. This may have important clinical implications for the treatment of many common bladder disorders including nocturia.
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6
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Prata C, Maraldi T, Angeloni C. Strategies to Counteract Oxidative Stress and Inflammation in Chronic-Degenerative Diseases. Int J Mol Sci 2022; 23:ijms23126439. [PMID: 35742882 PMCID: PMC9223535 DOI: 10.3390/ijms23126439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 05/31/2022] [Indexed: 11/16/2022] Open
Abstract
The great increase in life expectancy is linked to the necessity of counteracting chronic-degenerative diseases, e [...].
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Affiliation(s)
- Cecilia Prata
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum—University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
- Correspondence: (C.P.); (T.M.)
| | - Tullia Maraldi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via del Pozzo 71, 41125 Modena, Italy
- Correspondence: (C.P.); (T.M.)
| | - Cristina Angeloni
- Department for Life Quality Studies, Alma Mater Studiorum—University of Bologna, Corso d’Augusto, 47921 Rimini, Italy;
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7
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Velasco E, Delicado‐Miralles M, Hellings PW, Gallar J, Van Gerven L, Talavera K. Epithelial and sensory mechanisms of nasal hyperreactivity. Allergy 2022; 77:1450-1463. [PMID: 35174893 DOI: 10.1111/all.15259] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/06/2022] [Accepted: 02/14/2022] [Indexed: 11/28/2022]
Abstract
"Nasal hyperreactivity" is a key feature in various phenotypes of upper airway diseases, whereby reactions of the nasal epithelium to diverse chemical and physical stimuli are exacerbated. In this review, we illustrate how nasal hyperreactivity can result from at least three types of mechanisms: (1) impaired barrier function, (2) hypersensitivity to external and endogenous stimuli, and (3) potentiation of efferent systems. We describe the known molecular basis of hyperreactivity related to the functional impairment of epithelial cells and somatosensory innervation, and indicate that the thermal, chemical, and mechanical sensors determining hyperreactivity in humans remain to be identified. We delineate research directions that may provide new insights into nasal hyperreactivity associated with rhinitis/rhinosinusitis pathophysiology and therapeutics. The elucidation of the molecular mechanisms underlying nasal hyperreactivity is essential for the treatment of rhinitis according to the precepts of precision medicine.
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Affiliation(s)
- Enrique Velasco
- Instituto de Neurociencias Universidad Miguel Hernández‐CSIC San Juan de Alicante Spain
- The European University of Brain and Technology‐Neurotech EU San Juan de Alicante Spain
| | | | - Peter W. Hellings
- Department of Otorhinolaryngology University Hospitals Leuven Leuven Belgium
| | - Juana Gallar
- Instituto de Neurociencias Universidad Miguel Hernández‐CSIC San Juan de Alicante Spain
- The European University of Brain and Technology‐Neurotech EU San Juan de Alicante Spain
- Instituto de Investigación Sanitaria y Biomédica de Alicante San Juan de Alicante Spain
| | - Laura Van Gerven
- Department of Otorhinolaryngology University Hospitals Leuven Leuven Belgium
- Department of Microbiology, Immunology and transplantation, Allergy and Clinical Immunology Research Unit KU Leuven Leuven Belgium
- Department of Neurosciences, Experimental Otorhinolaryngology, Rhinology Research KU Leuven Leuven Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research Department of Cellular and Molecular Medicine KU Leuven, VIB‐KU Leuven Center for Brain & Disease Research Leuven Belgium
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8
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Kievit B, Johnstone AD, Gibon J, Barker PA. Mitochondrial Reactive Oxygen Species Mediate Activation of TRPV1 and Calcium Entry Following Peripheral Sensory Axotomy. Front Mol Neurosci 2022; 15:852181. [PMID: 35370552 PMCID: PMC8973397 DOI: 10.3389/fnmol.2022.852181] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/17/2022] [Indexed: 12/03/2022] Open
Abstract
Axons that are physically separated from their soma activate a series of signaling events that results in axonal self-destruction. A critical element of this signaling pathway is an intra-axonal calcium rise that occurs just prior to axonal fragmentation. Previous studies have shown that preventing this calcium rise delays the onset of axon fragmentation, yet the ion channels responsible for the influx, and the mechanisms by which they are activated, are largely unknown. Axonal injury can be modeled in vitro by transecting murine dorsal root ganglia (DRG) sensory axons. We coupled transections with intra-axonal calcium imaging and found that Ca2+ influx is sharply reduced in axons lacking trpv1 (for transient receptor potential cation channel vanilloid 1) and in axons treated with capsazepine (CPZ), a TRPV1 antagonist. Sensory neurons from trpv1–/– mice were partially rescued from degeneration after transection, indicating that TRPV1 normally plays a pro-degenerative role after axonal injury. TRPV1 activity can be regulated by direct post-translational modification induced by reactive oxygen species (ROS). Here, we tested the hypothesis that mitochondrial ROS production induced by axotomy is required for TRPV1 activity and subsequent axonal degeneration. We found that reducing mitochondrial depolarization with NAD+ supplementation or scavenging ROS using NAC or MitoQ sharply attenuates TRPV1-dependent calcium influx induced by axotomy. This study shows that ROS-dependent TRPV1 activation is required for Ca2+ entry after axotomy.
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Affiliation(s)
- Bradley Kievit
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Aaron D. Johnstone
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Julien Gibon
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
- *Correspondence: Julien Gibon,
| | - Philip A. Barker
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC, Canada
- Philip A. Barker,
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9
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Hong H, Hosomichi J, Maeda H, Lekvijittada K, Oishi S, Ishida Y, Usumi-Fujita R, Kaneko S, Suzuki JI, Yoshida KI, Ono T. Intermittent hypoxia retards mandibular growth and alters RANKL expression in adolescent and juvenile rats. Eur J Orthod 2021; 43:94-103. [PMID: 32219305 DOI: 10.1093/ejo/cjaa020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Chronic intermittent hypoxia (IH), a common state experienced in obstructive sleep apnoea (OSA), retards mandibular growth in adolescent rats. The aim of this study was to elucidate the differential effects of IH on mandibular growth in different growth stages. MATERIALS AND METHODS Three-week-old (juvenile stage) and 7-week-old (adolescent stage) male Sprague-Dawley rats underwent IH for 3 weeks. Age-matched control rats were exposed to room air. Mandibular growth was evaluated by radiograph analysis, micro-computed tomography, real-time polymerase chain reaction and immunohistology. Tibial growth was evaluated as an index of systemic skeletal growth. RESULTS IH had no significant impact on the general growth of either the juvenile or adolescent rats. However, it significantly decreased the total mandibular length and the posterior corpus length of the mandible in the adolescent rats and the anterior corpus length in the juvenile rats. IH also increased bone mineral density (BMD) of the condylar head in adolescent rats but did not affect the BMD of the tibia. Immunohistological analysis showed that the expression level of receptor activation of nuclear factor-κB ligand significantly decreased (in contrast to its messenger ribonucleicacid level) in the condylar head of adolescent rats with IH, while the number of osteoprotegerin-positive cells was comparable in the mandibles of adolescent IH rats and control rats. LIMITATIONS The animal model could not simulate the pathological conditions of OSA completely and there were differences in bone growth between humans and rodents. CONCLUSIONS These results suggest that the susceptibility of mandibular growth retardation to IH depends on the growth stage of the rats.
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Affiliation(s)
- Haixin Hong
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan.,Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Japan
| | - Jun Hosomichi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan.,Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Japan
| | - Hideyuki Maeda
- Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Japan
| | - Kochakorn Lekvijittada
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan.,Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Shuji Oishi
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Yuji Ishida
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Risa Usumi-Fujita
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Sawa Kaneko
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Jun-Ichi Suzuki
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan.,Department of Advanced Clinical Science and Therapeutics, Graduate School of Medicine, The University of Tokyo, Japan
| | - Ken-Ichi Yoshida
- Department of Forensic Medicine, Graduate School of Medicine, Tokyo Medical University, Japan
| | - Takashi Ono
- Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
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10
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Wu YH, Chueh KS, Chuang SM, Long CY, Lu JH, Juan YS. Bladder Hyperactivity Induced by Oxidative Stress and Bladder Ischemia: A Review of Treatment Strategies with Antioxidants. Int J Mol Sci 2021; 22:ijms22116014. [PMID: 34199527 PMCID: PMC8199707 DOI: 10.3390/ijms22116014] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 05/28/2021] [Indexed: 02/07/2023] Open
Abstract
Overactive bladder (OAB) syndrome, including frequency, urgency, nocturia and urgency incontinence, has a significantly negative impact on the quality-of-life scale (QoL) and can cause sufferer withdrawal from social activities. The occurrence of OAB can result from an imbalance between the production of pro-oxidants, such as free radicals and reactive species, and their elimination through protective mechanisms of antioxidant-induced oxidative stress. Several animal models, such as bladder ischemia/reperfusion (I/R), partial bladder outlet obstruction (PBOO) and ovarian hormone deficiency (OHD), have suggested that cyclic I/R during the micturition cycle induces oxidative stress, leading to bladder denervation, bladder afferent pathway sensitization and overexpression of bladder-damaging molecules, and finally resulting in bladder hyperactivity. Based on the results of previous animal experiments, the present review specifically focuses on four issues: (1) oxidative stress and antioxidant defense system; (2) oxidative stress in OAB and biomarkers of OAB; (3) OAB animal model; (4) potential nature/plant antioxidant treatment strategies for urinary dysfunction with OAB. Moreover, we organized the relationships between urinary dysfunction and oxidative stress biomarkers in urine, blood and bladder tissue. Reviewed information also revealed the summary of research findings for the effects of various antioxidants for treatment strategies for OAB.
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Affiliation(s)
- Yi-Hsuan Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung 80661, Taiwan
| | - Kuang-Shun Chueh
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Shu-Mien Chuang
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Cheng-Yu Long
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan;
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jian-He Lu
- Emerging Compounds Research Center, Department of Environmental Science and Engineering, College of Engineering, National Pingtung University of Science and Technology, Pintung 91201, Taiwan;
| | - Yung-Shun Juan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-H.W.); (K.-S.C.)
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: ; Tel.: +886-7-3121101; Fax: +886-7-3506269
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11
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Matsuo T, Miyata Y, Otsubo A, Mukae Y, Mitsunari K, Ohba K, Sakai H. Efficacy of salt reduction for managing overactive bladder symptoms: a prospective study in patients with excessive daily salt intake. Sci Rep 2021; 11:4046. [PMID: 33603133 PMCID: PMC7893030 DOI: 10.1038/s41598-021-83725-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 12/08/2020] [Indexed: 12/28/2022] Open
Abstract
This study aimed to investigate the efficacy of salt intake restriction on overactive bladder (OAB) symptoms in patients with excessive salt intake. Patients received a brochure on nutritional guidance regarding salt intake reduction and received health education every 4 weeks for 12 weeks. Data from overactive bladder symptom score (OABSS) questionnaires and frequency volume charts (FVCs) were evaluated. The daily salt intake was estimated by determining the urinary sodium and creatinine concentrations using spot urine samples. Of the 98 patients included, 71 (72.4%) successfully restricted their daily salt intake after 12 weeks (salt restricted [R] group), while 27 (27.6%) did not (salt non-restricted [N-R] group). The scores to each OABSS question and the resulting total score improved significantly in the R group; however, the individual scores remained unchanged and the total score increased in the N-R group. The FVC data indicated improved voided volumes in the R group as compared to in the N-R group. Ultimately, 17 (23.9%) patients in the R group no longer fulfilled the OAB diagnostic criteria after salt intake reduction. Thus, salt intake reduction improved urinary symptoms in patients with OAB and may be a therapeutic option for OAB in patients with excessive daily salt intakes.
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Affiliation(s)
- Tomohiro Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
| | - Asato Otsubo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Yuta Mukae
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Kensuke Mitsunari
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Kojiro Ohba
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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12
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Nageib M, Zahran MH, El‐Hefnawy AS, Barakat N, Awadalla A, Aamer HG, Khater S, Shokeir AA. Low energy shock wave‐delivered intravesical botulinum neurotoxin‐A potentiates antioxidant genes and inhibits proinflammatory cytokines in rat model of overactive bladder. Neurourol Urodyn 2020; 39:2447-2454. [DOI: 10.1002/nau.24511] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 01/23/2023]
Affiliation(s)
- Mohammed Nageib
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Mohamed H. Zahran
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Ahmed S. El‐Hefnawy
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Nashwa Barakat
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Amira Awadalla
- Center of Excellence for Genome and Cancer Research, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Haytham G. Aamer
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - S. Khater
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
| | - Ahmed A. Shokeir
- Urology Department, Urology and Nephrology Center Mansoura University Mansoura Egypt
- Center of Excellence for Genome and Cancer Research, Urology and Nephrology Center Mansoura University Mansoura Egypt
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13
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Rada MP, Ciortea R, Măluţan AM, Doumouchtsis SK, Bucuri CE, Clim A, Roman A, Mihu D. The profile of urinary biomarkers in overactive bladder. Neurourol Urodyn 2020; 39:2305-2313. [PMID: 32813897 DOI: 10.1002/nau.24487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/06/2020] [Indexed: 12/20/2022]
Abstract
AIMS In overactive bladder (OAB) research, different biomarkers have been proposed as diagnostic tools and may be used to create individual patient profiles. Assessing the diagnostic performance of biomarkers would better outline their utility. Therefore, our aim was to investigate the diagnostic value of four urinary biomarkers: human brain derived neurotrophic factor (hBDNF), malondialdehyde (MDA), h nerve growth factor (hNGF) and h 8-hydroxydeoxyguanosine in women with OAB. These are neurotrophins/oxidative stress markers that have been linked to lower urinary tract symptoms. METHODS A total of 105 women were included in the study and distributed in two groups: a group with OAB (n = 53) and a control group (n = 50). The levels of the biomarkers were determined using enzyme-linked immunosorbent assay technique and they were compared between the groups. If the Mann-Whitney test demonstrated a statistically significant difference, receiver operating curves (ROC) analysis was undertaken. RESULTS When normalized to urinary creatinine, hBDNF, MDA, and hNGF showed significantly increased values in women with OAB as compared to controls, whereas 8-OHdG showed no significant difference. The diagnostic performance of these biomarkers was analyzed based on the area under the ROC curve (AUC). MDA had the highest AUC (0.75), followed by hNGF (0.69) and hBDNF (0.67). CONCLUSIONS Our findings suggest that MDA, a relatively novel biomarker in OAB research, has a fair performance as a diagnostic tool for OAB. Moreover, urinary neurotrophins (NGF and BDNF) as biomarkers may have a role in the diagnostic pathways of women with OAB symptoms.
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Affiliation(s)
- Maria Patricia Rada
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Răzvan Ciortea
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei Mihai Măluţan
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Stergios K Doumouchtsis
- Department of Obstetrics and Gynaecology, Epsom & St Helier University Hospitals NHS Trust, UK
- Institute of Medical and Biomedical Education, St George's University of London, London, UK
- Laboratory of Experimental Surgery and Surgical Research N S Christeas, Athens University Medical School, Athens, Greece
- American University of the Caribbean School of Medicine, Florida
| | - Carmen Elena Bucuri
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Adelina Clim
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei Roman
- Department of Radiology, "Prof. Dr. Ion Chiricuţă" Oncology Institute Cluj-Napoca, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Mihu
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Birder LA. Is there a role for oxidative stress and mitochondrial dysfunction in age-associated bladder disorders? Tzu Chi Med J 2020; 32:223-226. [PMID: 32955518 PMCID: PMC7485680 DOI: 10.4103/tcmj.tcmj_250_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 12/27/2022] Open
Abstract
Millions of individuals worldwide are affected by age-related lower urinary tract symptoms (LUTSs), including impaired detrusor contractility, detrusor overactivity, decreased bladder sensation, as well as increased bladder capacity often resulting in incomplete bladder emptying. Yet, the underlying factors that contribute to these symptoms are not known and there are few therapies to treat these disorders. Because of the complex pathophysiology, a number of animal models have been studied over the years to better understand mechanisms underlying patient symptoms. Such animal models can aid in the investigation of aspects of age-associated LUTSs that cannot be pursued in humans as well as to develop and test potential therapies. In addition, the search for urinary factors that may be a causative agent has resulted in the discovery of a number of potential targets that could serve as predictive biomarkers which can aid in early diagnosis and treatment of these chronic disorders. Recent evidence has supported a role for chronic changes in mitochondrial function and oxidative stress (along with production of reactive oxygen species) and abnormal urodynamic behavior in older patients. This review discusses new insights into how aging alters fundamental cellular processes that impair signaling in the bladder wall, resulting in abnormal voiding function.
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Affiliation(s)
- Lori A. Birder
- Department of Medicine, Renal Electrolyte Division, Pittsburgh, PA, USA,Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA,Address for correspondence: Prof. Lori A. Birder, Department of Pharmacology and Chemical Biology, University of Pittsburgh, A 1217 Scaife Hall, Pittsburgh, PA 15217, USA. E-mail:
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15
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Kim JH, Jang YS, Kim HI, Park JY, Park SH, Hwang YI, Jang SH, Jung KS, Park HS, Park CS. Activation of Transient Receptor Potential Melastatin Family Member 8 (TRPM8) Receptors Induces Proinflammatory Cytokine Expressions in Bronchial Epithelial Cells. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2020; 12:684-700. [PMID: 32400133 PMCID: PMC7224991 DOI: 10.4168/aair.2020.12.4.684] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 12/13/2022]
Abstract
Purpose Cold air is a major environmental factor that exacerbates asthma. Transient receptor potential melastatin family member 8 (TRPM8) is a cold-sensing channel expressed in the airway epithelium. However, its role in airway inflammation remains unknown. We investigated the role of TRPM8 in innate immune responses in bronchial epithelial cells and asthmatic subjects. Methods The TRPM8 mRNA and protein expression on BEAS2B human bronchial epithelial cells was examined by real-time polymerase chain reaction (PCR), immunofluorescence staining and western blotting. Additionally, interleukin (IL)-4, IL-6, IL-8, IL-13, IL-25 and thymic stromal lymphopoietin (TSLP) levels before and after menthol, dexamethasone and N-(4-tert-butylphenyl)-4-(3-chloropyridin-2-yl) piperazine-1-carboxamide (BCTC) treatments were measured via real-time PCR. TRPM8 protein levels in the supernatants of induced sputum from asthmatic subjects and normal control subjects were measured using enzyme-linked immunosorbent assay, and mRNA levels in sputum cell lysates were measured using real-time PCR. Results Treatment with up to 2 mM menthol dose-dependently increased TRPM8 mRNA and protein in BEAS2B cells compared to untreated cells (P < 0.001) and concomitantly increased IL-25 and TSLP mRNA (P < 0.05), but not IL-33 mRNA. BCTC (10 μM) significantly abolished menthol-induced up-regulation of TRPM8 mRNA and protein and IL-25 and TSLP mRNA (P < 0.01). TRPM8 protein levels were higher in the supernatants of induced sputum from asthmatic subjects (n = 107) than in those from healthy controls (n = 19) (P < 0.001), and IL-25, TSLP and IL-33 mRNA levels were concomitantly increased (P < 0.001). Additionally, TRPM8 mRNA levels correlated strongly with those of IL-25 and TSLP (P < 0.001), and TRPM8 protein levels were significantly higher in bronchodilator-responsive asthmatic subjects than in nonresponders. Conclusions TRPM8 may be involved in the airway epithelial cell innate immune response and a molecular target for the treatment of asthma.
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Affiliation(s)
- Joo Hee Kim
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea.
| | - Young Sook Jang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Hwan Il Kim
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Ji Young Park
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Sung Hoon Park
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Yong Il Hwang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Seung Hun Jang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Ki Suck Jung
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Lung Research Institute of Hallym University College of Medicine, Anyang, Korea
| | - Hae Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | - Choon Sik Park
- Division of Allergy and Respiratory Disease, Department of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
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Alavi MS, Shamsizadeh A, Karimi G, Roohbakhsh A. Transient receptor potential ankyrin 1 (TRPA1)-mediated toxicity: friend or foe? Toxicol Mech Methods 2019; 30:1-18. [PMID: 31409172 DOI: 10.1080/15376516.2019.1652872] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transient receptor potential (TRP) channels have been widely studied during the last decade. New studies uncover new features and potential applications for these channels. TRPA1 has a huge distribution all over the human body and has been reported to be involved in different physiological and pathological conditions including cold, pain, and damage sensation. Considering its role, many studies have been devoted to evaluating the role of this channel in the initiation and progression of different toxicities. Accordingly, we reviewed the most recent studies and divided the role of TRPA1 in toxicology into the following sections: neurotoxicity, cardiotoxicity, dermatotoxicity, and pulmonary toxicity. Acetaminophen, heavy metals, tear gases, various chemotherapeutic agents, acrolein, wood smoke particulate materials, particulate air pollution materials, diesel exhaust particles, cigarette smoke extracts, air born irritants, sulfur mustard, and plasticizers are selected compounds and materials with toxic effects that are, at least in part, mediated by TRPA1. Considering the high safety of TRPA1 antagonists and their efficacy to resolve selected toxic or adverse drug reactions, the future of these drugs looks promising.
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Affiliation(s)
- Mohaddeseh Sadat Alavi
- Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Shamsizadeh
- Physiology-Pharmacology Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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17
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Matsuo T, Miyata Y, Araki K, Mukae Y, Otsubo A, Ohba K, Sakai H. Efficacy of Tadalafil Therapy and Changes in Oxidative Stress Levels in Male Patients with Lower Urinary Tract Symptoms and Overactive Bladder. Low Urin Tract Symptoms 2019; 12:47-53. [PMID: 31407871 PMCID: PMC7004155 DOI: 10.1111/luts.12283] [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: 01/23/2019] [Revised: 04/30/2019] [Accepted: 07/22/2019] [Indexed: 02/06/2023]
Abstract
Objective To evaluate the effects of tadalafil monotherapy on lower urinary tract symptoms, urodynamic parameters, and oxidative stress levels in male patients. Methods This prospective study included 53 male patients with urinary symptoms, who met the criteria for overactive bladder (OAB) (≥ 2 points for Q3 [urgency] in the OAB symptom score [OABSS] assessment and ≥ 3 points for the total score). The patients received 5 mg tadalafil orally once daily, and their symptoms were assessed before and after the 12‐week treatment. The OABSS and international prostate symptom score (IPSS) were used to evaluate the subjective symptoms. The objective findings were assessed using uroflowmetry. Oxidative stress was assessed by determining urinary levels of 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG) levels with an adjustment for urinary creatinine (CR) concentration. Results After tadalafil administration, total and individual indices of the OABSS assessment showed significant improvement. In addition, total storage and voiding symptoms that contributed to the IPSS were also significantly improved. The voided volume was increased, and the maximum flow rate was improved after tadalafil treatment (P = .002 and < 0.001, respectively). Urinary 8‐OHdG/CR decreased from 12.4 ± 9.7 ng/mg CR to 7.6 ± 11.6 ng/mg CR (P < .001). In patients who showed OAB improvement and did not meet the criteria for OAB after the treatment (44 patients, 83.0%), the urinary 8‐OHdG/CR level was significantly decreased from 11.6 ± 8.4 ng/mg CR to 6.4 ± 10.3 ng/mg CR (P < .001). Conclusions Tadalafil treatment improves OAB symptoms and urodynamic parameters by decreasing oxidative stress level.
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Affiliation(s)
- Tomohiro Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kyohei Araki
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuta Mukae
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Asato Otsubo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kojiro Ohba
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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18
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Cheng QY, Yang MC, Wu J, Jia XL, Xiao C, Lian T, Zhang SZ. Reduced cardiac ischemia/reperfusion injury by hypothermic reperfusion via activation of transient receptor potential M8 channel. Life Sci 2019; 232:116658. [PMID: 31310758 DOI: 10.1016/j.lfs.2019.116658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/05/2019] [Accepted: 07/12/2019] [Indexed: 01/23/2023]
Abstract
AIMS To investigate the cardioprotective effects of hypothermic (25 °C) reperfusion on ischemia/reperfusion injury and the role of transient potential channel M8 (TRPM8) in this process. MAIN METHODS Western blot and real-time PCR were used to monitor the expression of TRPM8 in myocardium. Myocardial ischemia/reperfusion injury was induced by 30 min of global ischemia followed by 120 min of reperfusion in Langendorff-perfused hearts from Sprague-Dawley rats. The reperfusion was either normothermic (37 °C) or hypothermic (25 °C). Infarct size and left ventricular function were assessed, and lactate dehydrogenase (LDH), superoxide dismutase (SOD), and malondialdehyde (MDA) in the coronary effluent were measured spectrophotometrically, and cardiomyocyte apoptosis was detected by TUNEL assay. The expression of TRPM8, Bcl-2, Bax, cleaved capspase-3, RhoA, and ROCK2 was quantified. KEY FINDINGS TRPM8 protein and mRNA were expressed in rat myocardium. Hypothermic reperfusion decreased the infarct size, LDH activity, MDA content, apoptosis, and expression of Bax, cleaved caspase-3, RhoA, and ROCK2 compared with normothermic reperfusion. These effects were associated with improved recovery of left ventricular contractility, and were reduced by BCTC, a TRPM8 antagonist. Ischemia/reperfusion injury and the increased expression of Bax, caspase-3, RhoA, and ROCK2 induced by normothermic reperfusion were reduced by Icilin, a TRPM8 agonist. SIGNIFICANCE Hypothermic reperfusion at 25 °C has cardioprotective effects against ischemia/reperfusion injury via activation of TRPM8 to inhibit the oxidative stress-related RhoA/ROCK2 signal pathway.
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Affiliation(s)
- Quan-Yi Cheng
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Meng-Cheng Yang
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Jing Wu
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Xiao-Li Jia
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Chao Xiao
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Ting Lian
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China
| | - Shi-Zhong Zhang
- Department of Physiology, Medical College of China Three Gorges University, 8 Daxue Road, Yichang 443002, China.
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19
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ADP-Ribose and oxidative stress activate TRPM8 channel in prostate cancer and kidney cells. Sci Rep 2019; 9:4100. [PMID: 30858386 PMCID: PMC6411746 DOI: 10.1038/s41598-018-37552-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 12/06/2018] [Indexed: 01/16/2023] Open
Abstract
Activation of TRPM8 channel through oxidative stress may induce Ca2+ and pro-apoptotic signals in prostate cancer and kidney cells. The aim of this study was to evaluate activation of TRPM8 can increase apoptosis and oxidative stress in the prostate cancer (Du145M8), TRPM8 knock out (Du 145M8KO), transfected (HEK293TM8) and non-transfected human kidney (HEK293) cells. Intracellular Ca2+ responses to TRPM8 activation were increased in the Du145M8 and HEK293TM8 cells from coming cumene hydrogen peroxide (CHPx), menthol, ADP-Ribose (ADPR), but not in the HEK293 and Du 145M8KO cells. The intracellular Ca2+ responses to both ADPR and CHPx were totally inhibited by the thiol cycle antioxidant glutathione, and TRPM8 blockers (N-(p-amylcinnamoyl)anthranilic acid and capsazepine). Apoptosis, Annexin V, mitochondrial membrane depolarization, intracellular ROS, caspase 3 and 9 values were increased through TRPM8 activation in the Du 145M8 but not in the Du 145M8KO and non-transfected HEK293 cells by CHPx and hydrogen peroxide. In conclusion, apoptotic and oxidant effects on the cells were increased activation of TRPM8 by oxidative stress and ADPR. Activation of TRPM8 through oxidative stress and ADPR in the cells could be used as an effective strategy in the treatment of prostate cancer cells.
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20
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Matsuo T, Miyata Y, Sakai H. Effect of salt intake reduction on nocturia in patients with excessive salt intake. Neurourol Urodyn 2019; 38:927-933. [PMID: 30706965 DOI: 10.1002/nau.23929] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 12/04/2018] [Accepted: 12/26/2018] [Indexed: 12/29/2022]
Abstract
AIMS To assess the efficacy of salt reduction for improving nocturia in patients with high salt intake. METHODS Changes in lower urinary symptoms and frequency volume chart by salt intake (men: 8 g/day; women: ≥7 g/day) were analyzed in this prospective study. Patients were instructed to use a brochure for salt intake restriction via interview once every four weeks. The daily salt intake was estimated by using spot urine samples. RESULTS Two-hundred twenty-three (69.5%) patients were successful in reducing their daily salt intake (S group), whereas 98 (30.5%) patients failed to reduce their salt intake (F group). In the S group, nocturia improved from 2.3 ± 0.9 to 1.4 ± 1.0, and nocturnal polyuria index (NPi) improved from 30.2 ± 7.5 to 27.7 ± 7.3% (P < 0.001). In the Core Lower Urinary Tract Symptom Score (CLSS) of the S group, Q3 (urgency) improved from 1.0 ± 1.0 to 0.9 ± 1.0 (P = 0.001); Q1 (diurnal frequency) (P < 0.001), and Q2 (nocturia) also improved (P < 0.001). Moreover, the quality of life parameter improved significantly (P < 0.001). The patients in the F group did not have improvements in any symptom during the study period. CONCLUSIONS Patients with nocturia who also have high salt intake should be advised to reduce their salt intake, as a lifestyle modification. Our results support the importance of randomized clinical trials with larger populations and the appropriate inclusion/exclusion criteria to conclude the clinical usefulness of salt reduction in this patient cohort.
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Affiliation(s)
- Tomohiro Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yasuyoshi Miyata
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Sakai
- Department of Urology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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21
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Tykocki NR, Heppner TJ, Dalsgaard T, Bonev AD, Nelson MT. The K V 7 channel activator retigabine suppresses mouse urinary bladder afferent nerve activity without affecting detrusor smooth muscle K + channel currents. J Physiol 2018; 597:935-950. [PMID: 30536555 DOI: 10.1113/jp277021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/06/2018] [Indexed: 01/20/2023] Open
Abstract
KEY POINTS KV 7 channels are a family of voltage-dependent K+ channels expressed in many cell types, which open in response to membrane depolarization to regulate cell excitability. Drugs that target KV 7 channels are used clinically to treat epilepsy. Interestingly, these drugs also cause urinary retention, but it was unclear how. In this study, we focused on two possible mechanisms by which retigabine could cause urinary retention: by decreasing smooth muscle excitability, or by decreasing sensory nerve outflow. Urinary bladder smooth muscle had no measurable KV 7 channel currents. However, the KV 7 channel agonist retigabine nearly abolished sensory nerve outflow from the urinary bladder during bladder filling. We conclude that KV 7 channel activation likely affects urinary bladder function by blocking afferent nerve outflow to the brain, which is key to sensing bladder fullness. ABSTRACT KV 7 channels are voltage-dependent K+ channels that open in response to membrane depolarization to regulate cell excitability. KV 7 activators, such as retigabine, were used to treat epilepsy but caused urinary retention. Using electrophysiological recordings from freshly isolated mouse urinary bladder smooth muscle (UBSM) cells, isometric contractility of bladder strips, and ex vivo measurements of bladder afferent activity, we explored the role of KV 7 channels as regulators of murine urinary bladder function. The KV 7 activator retigabine (10 μM) had no effect on voltage-dependent K+ currents or resting membrane potential of UBSM cells, suggesting that these cells lacked retigabine-sensitive KV 7 channels. The KV 7 inhibitor XE-991 (10 μM) inhibited UBSM K+ currents; the properties of these currents, however, were typical of KV 2 channels and not KV 7 channels. Retigabine inhibited voltage-dependent Ca2+ channel (VDCC) currents and reduced steady-state contractions to 60 mM KCl in bladder strips, suggesting that reduction in VDCC current was sufficient to directly affect UBSM function. To determine if retigabine altered ex vivo bladder sensory outflow, we measured afferent activity during simulated transient contractions (TCs) of the bladder wall. Simulated TCs caused bursts of afferent activity that were nearly abolished by retigabine. The effects of retigabine were blocked by co-incubation with XE-991, suggesting specific activation of KV 7 channels on afferent nerves. These results indicate that retigabine primarily affects urinary bladder function by inhibiting TC generation and afferent nerve activity, which are key to sensing bladder fullness. Any direct inhibition of UBSM contractility is likely to be from non-specific effects on VDCCs and KV 2 channels.
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Affiliation(s)
- Nathan R Tykocki
- Department of Pharmacology, University of Vermont, Burlington, VT, 05405, USA
| | - Thomas J Heppner
- Department of Pharmacology, University of Vermont, Burlington, VT, 05405, USA
| | | | - Adrian D Bonev
- Department of Pharmacology, University of Vermont, Burlington, VT, 05405, USA
| | - Mark T Nelson
- Department of Pharmacology, University of Vermont, Burlington, VT, 05405, USA.,Institute of Cardiovascular Sciences, University of Manchester, Manchester, UK
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Lin AH, Liu MH, Ko HK, Perng DW, Lee TS, Kou YR. Menthol Cigarette Smoke Induces More Severe Lung Inflammation Than Non-menthol Cigarette Smoke Does in Mice With Subchronic Exposure - Role of TRPM8. Front Physiol 2018; 9:1817. [PMID: 30618827 PMCID: PMC6305452 DOI: 10.3389/fphys.2018.01817] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/05/2018] [Indexed: 01/27/2023] Open
Abstract
In smokers with chronic obstructive pulmonary disease, more severe lung inflammation is associated with menthol cigarette smoking compared to non-menthol cigarette smoking. However, the mechanisms remain unclear. Menthol is an activator of transient receptor potential melastatin-8 (TRPM8), which is also sensitive to reactive oxygen species (ROS). Our recent in vitro study demonstrated that the extracts of menthol cigarette smoke (M-CS) can induce greater ROS-sensitive, TRPM8-mediated, mitogen-activated protein kinase (MAPK)-dependent inflammatory responses in lung epithelial cells than the extracts of non-menthol cigarette smoke (Non-M-CS) can. In this study, we tested the hypothesis that M-CS can induce more severe lung inflammation than Non-M-CS can via the additional action of menthol in M-CS on epithelial and lung TRPM8 in mice. Compared with Non-M-CS exposure, subchronic M-CS exposure for 7 days up-regulated the epithelial and lung expression of TRPM8, induced more vigorous activation of epithelial and lung MAPKs, and caused more severe lung inflammation. The MAPK activation was evidenced by the increased expression of phosphor-extracellular signal-regulated and phosphor-c-Jun N-terminal kinases. The lung inflammation was evidenced by pathohistological findings and increases in several inflammatory indices. Moreover, treatment with a TRPM8 antagonist (N-(3-aminopropyl)-2-{[(3-methylphenyl)methyl]oxy}-N-(2-thienylmethyl)benzamide; AMTB) greatly suppressed the MAPK activation and lung inflammation induced by Non-M-CS and M-CS, and the residual responses to these two types of CS did not differ. Conversely, the levels of biomarkers of acute CS exposure (20 min), including carboxyhemoglobin and cotinine (a nicotine metabolite) in blood plasma, and superoxide and hydrogen peroxide (two major types of ROS) in bronchoalveolar lavage fluid, did not show significant differences in the mice with Non-M-CS and M-CS exposure. We concluded that M-CS could induce greater TRPM8-mediated activation of MAPKs and lung inflammation than Non-M-CS could in mice with subchronic exposure. The augmented inflammatory effects of M-CS are unlikely due to a larger total amount of CS inhaled, but may be caused by an additional stimulation of epithelial and lung TRPM8 by menthol in M-CS. A common stimulant (presumably ROS) generated by both CS types may also stimulate TRPM8, activate MAPKs, and induce lung inflammation because treatment with AMTB could reduce these responses to Non-M-CS.
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Affiliation(s)
- An-Hsuan Lin
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Meng-Han Liu
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hsin-Kuo Ko
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Diahn-Warng Perng
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Tzong-Shyuan Lee
- Graduate Institute and Department of Physiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu Ru Kou
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Peixoto-Neves D, Soni H, Adebiyi A. Oxidant-induced increase in norepinephrine secretion from PC12 cells is dependent on TRPM8 channel-mediated intracellular calcium elevation. Biochem Biophys Res Commun 2018; 506:709-715. [PMID: 30376995 DOI: 10.1016/j.bbrc.2018.10.120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 10/19/2018] [Indexed: 10/28/2022]
Abstract
Reactive oxygen species (ROS) modulate neuronal function, including plasticity and neurotransmitter biosynthesis and release. The cellular mechanisms that underlie redox modulation of neurotransmission are not fully resolved, but potential pathways include ROS-induced alterations in Ca2+ signaling in nerve terminals. In this study, we show that cold-sensitive receptor TRPM8 is activated by pro-oxidant tert-butyl hydroperoxide (tBHP). Polymerase chain reaction, Western immunoblotting, and immunofluorescence indicated that TRPM8 channels are expressed in rat pheochromocytoma 12 (PC12) cells, a phenotypic model of sympathetic neurosecretion when differentiated with nerve growth factor. WS-12, a selective TRPM8 channel agonist, and tBHP increased intracellular Ca2+ concentration in differentiated PC12 cells; an effect attenuated by AMTB, a selective TRPM8 channel blocker, and siRNA-mediated TRPM8 knockdown. Blockade of TRPM8 channels also reduced WS-12- and tBHP-evoked norepinephrine secretion from the cells. These data suggest that TRPM8 channels contribute to oxidant-induced neurotransmission in PC12 cells.
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Affiliation(s)
| | - Hitesh Soni
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Adebowale Adebiyi
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN, USA.
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Startek JB, Voets T, Talavera K. To flourish or perish: evolutionary TRiPs into the sensory biology of plant-herbivore interactions. Pflugers Arch 2018; 471:213-236. [PMID: 30229297 DOI: 10.1007/s00424-018-2205-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/31/2018] [Accepted: 09/06/2018] [Indexed: 12/18/2022]
Abstract
The interactions between plants and their herbivores are highly complex systems generating on one side an extraordinary diversity of plant protection mechanisms and on the other side sophisticated consumer feeding strategies. Herbivores have evolved complex, integrative sensory systems that allow them to distinguish between food sources having mere bad flavors from the actually toxic ones. These systems are based on the senses of taste, olfaction and somatosensation in the oral and nasal cavities, and on post-ingestive chemosensory mechanisms. The potential ability of plant defensive chemical traits to induce tissue damage in foragers is mainly encoded in the latter through chemesthetic sensations such as burning, pain, itch, irritation, tingling, and numbness, all of which induce innate aversive behavioral responses. Here, we discuss the involvement of transient receptor potential (TRP) channels in the chemosensory mechanisms that are at the core of complex and fascinating plant-herbivore ecological networks. We review how "sensory" TRPs are activated by a myriad of plant-derived compounds, leading to cation influx, membrane depolarization, and excitation of sensory nerve fibers of the oronasal cavities in mammals and bitter-sensing cells in insects. We also illustrate how TRP channel expression patterns and functionalities vary between species, leading to intriguing evolutionary adaptations to the specific habitats and life cycles of individual organisms.
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Affiliation(s)
- Justyna B Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium. .,VIB Center for Brain & Disease Research, Leuven, Belgium.
| | - Thomas Voets
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
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Epigallocatechin Gallate Attenuates Bladder Dysfunction via Suppression of Oxidative Stress in a Rat Model of Partial Bladder Outlet Obstruction. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1393641. [PMID: 30140361 PMCID: PMC6081539 DOI: 10.1155/2018/1393641] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/29/2018] [Accepted: 05/14/2018] [Indexed: 11/17/2022]
Abstract
Purpose To investigate the protective effect of epigallocatechin gallate (EGCG), a green tea extract, and its underlying mechanism on bladder dysfunction in a rat model of bladder outlet obstruction (BOO). Materials and Methods Sprague-Dawley rats of BOO were surgically induced and followed by treatment with EGCG (5 mg/kg/day) or saline (control) via intraperitoneal injection. Cystometry was performed on four weeks postoperatively in conscious rats. H&E, Masson trichrome, and TUNEL staining were performed to observe tissue alterations. Oxidative stress markers were measured, and protein expression of Nrf2-ARE pathway was examined by immunohistochemistry and Western blotting. Results Our data showed that EGCG could increase the peak voiding pressure and bladder compliance and prolong micturition interval of BOO rats compared with control and finally reduce the frequency of urinary. EGCG could ameliorate the increase of collagen fibers and ROS induced by obstruction and increase the activity of SOD, GSH-Px, and CAT. The level of cell apoptosis was decreased in BOO rats treated with EGCG compared with control, and caspase-3 expression was reduced as well. Moreover, EGCG could activate the Nrf2 expression with elevation of its target antioxidant proteins. Conclusions EGCG alleviates BOO-induced bladder dysfunction via suppression of oxidative stress and activation of the protein expression of Nrf2-ARE pathway.
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Birder LA, Kullmann AF, Chapple CR. The aging bladder insights from animal models. Asian J Urol 2018; 5:135-140. [PMID: 29988876 PMCID: PMC6033201 DOI: 10.1016/j.ajur.2017.03.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 03/20/2017] [Accepted: 03/20/2017] [Indexed: 12/27/2022] Open
Abstract
Alterations in bladder function with aging are very common and are very likely to represent an increasing healthcare problem in the years to come with the general aging of the population. In this review the authors describe the prevalence of lower urinary tract symptoms (LUTS) and comment upon potential mechanisms which may be responsible for the increasing prevalence of lower LUTS with increasing age, based on laboratory studies. It is clear that there is a complex interplay between the various components of the neural innervation structure of the bladder in leading to changes with age, which are likely to underpin the LUTS which are seen in the aging bladder.
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Affiliation(s)
- Lori A. Birder
- University of Pittsburgh School of Medicine, Department of Pharmacology, Pittsburgh, PA, USA
- University of Pittsburgh School of Medicine, Department of Medicine, Pittsburgh, PA, USA
| | - Aura F. Kullmann
- University of Pittsburgh School of Medicine, Department of Medicine, Pittsburgh, PA, USA
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27
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Dokumacioglu E, Demiray O, Dokumacioglu A, Sahin A, Sen TM, Cankaya S. Measuring urinary 8-hydroxy-2'-deoxyguanosine and malondialdehyde levels in women with overactive bladder. Investig Clin Urol 2018; 59:252-256. [PMID: 29984340 PMCID: PMC6028472 DOI: 10.4111/icu.2018.59.4.252] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/11/2018] [Indexed: 12/01/2022] Open
Abstract
Purpose In this study, we aimed to explain the role of oxidative stress in women with overactive bladder (OAB) by investigating the levels of 8-hydroxy-2′-deoxyguanosine (8-OHdG), a marker of oxidative DNA damage, and malondialdehyde (MDA), an indicator of lipid peroxidation. Materials and Methods A total of 90 women were included in the study: 45 female patients diagnosed with OAB at Hopa State Hospital Urology Polyclinic and 45 healthy women without any metabolic or neurologic disease. Levels of MDA and 8-OHdG were measured in 24-hour urine samples for all subjects. Results Urinary levels of MDA and 8-OHdG were significantly higher in the OAB group than in the control group (p<0.001). A significant positive correlation (p<0.001) was found between the measurements of 8-OHdG and MDA. Conclusions Oxidative stress may be important in the pathophysiology of OAB, because levels of 8-OHdG and MDA are increased. Increased levels of 8-OHdG may be due to damaged nuclear and mitochondrial DNA as a result of oxidative attacks caused by free radicals. Nevertheless, further randomized and prospective studies with larger patient populations are needed.
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Affiliation(s)
- Eda Dokumacioglu
- Department of Nutrition and Dietetics, Artvin Coruh University Faculty of Healthy Sciences, Artvin, Turkey
| | - Ozay Demiray
- Department of Urology, Hopa State Hospital, Artvin, Turkey
| | - Ali Dokumacioglu
- Department of Medical Biochemistry, Hopa State Hospital, Artvin, Turkey
| | - Arzu Sahin
- Department of Physiology, Ordu University Faculty of Medicine, Ordu, Turkey
| | - Tugba Mazlum Sen
- Department of Medical Biochemistry, Karadeniz Teknik University Faculty of Medicine, Trabzon, Turkey
| | - Soner Cankaya
- Department of Biostatistics and Medical Informatics, Ordu University Faculty of Medicine, Ordu, Turkey
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Vaughan CP, Markland AD, Smith PP, Burgio KL, Kuchel GA. Report and Research Agenda of the American Geriatrics Society and National Institute on Aging Bedside-to-Bench Conference on Urinary Incontinence in Older Adults: A Translational Research Agenda for a Complex Geriatric Syndrome. J Am Geriatr Soc 2018; 66:773-782. [PMID: 29205261 PMCID: PMC5906179 DOI: 10.1111/jgs.15157] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The American Geriatrics Society, with support from the National Institute on Aging and other funders, held its ninth Bedside-to-Bench research conference, entitled "Urinary Incontinence in the Older Adult: A Translational Research Agenda for a Complex Geriatric Syndrome," October 16 to 18, 2016, in Bethesda, Maryland. As part of a conference series addressing three common geriatric syndromes-delirium, sleep and circadian rhythm disturbance, and urinary incontinence-the series highlighted relationships and pertinent clinical and pathophysiological commonalities between these conditions. The conference provided a forum for discussing current epidemiology, basic science, and clinical and translational research on urinary incontinence in older adults; for identifying gaps in knowledge; and for developing a research agenda to inform future investigative efforts. The conference also promoted networking involving emerging researchers and thought leaders in the field of incontinence, aging, and other fields of research, as well as National Institutes of Health program personnel.
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Affiliation(s)
- Camille P Vaughan
- Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs Birmingham/Atlanta, Atlanta, Georgia, Birmingham, Alabama
- Division of General Medicine and Geriatrics, Department of Medicine, Emory University, Atlanta, Georgia
| | - Alayne D Markland
- Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs Birmingham/Atlanta, Atlanta, Georgia, Birmingham, Alabama
- Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Phillip P Smith
- Division of Urology, University of Connecticut Health Center, Farmington, Connecticut
- UConn Center on Aging, University of Connecticut Health Center, Farmington, Connecticut
| | - Kathryn L Burgio
- Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs Birmingham/Atlanta, Atlanta, Georgia, Birmingham, Alabama
- Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - George A Kuchel
- UConn Center on Aging, University of Connecticut Health Center, Farmington, Connecticut
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Chiang BJ, Chen TW, Chung SD, Lee WZ, Chien CT. Synthetic nickel-containing superoxide dismutase attenuates para-phenylenediamine-induced bladder dysfunction in rats. Oncotarget 2017; 8:105735-105748. [PMID: 29285288 PMCID: PMC5739675 DOI: 10.18632/oncotarget.22395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 10/05/2017] [Indexed: 02/01/2023] Open
Abstract
Para (p)-phenylenediamine and its toxic metabolites induce excess reactive oxygen species formation that results in bladder voiding dysfunction. We determined the effects of synthetic Ni-containing superoxide dismutase mimics and the role of oxidative stress in p-phenylenediamine-induced urinary bladder dysfunction. P-phenylenediamine (60 μg/kg/day) was intraperitoneally administered for 4 weeks to induce bladder injury in female Wistar rats. Synthetic Ni-containing superoxide dismutase mimics, WCT003 (1.5 mg/kg) and WCT006 (1.5 mg/kg), were then intraperitoneally administered for 2 weeks. Transcystometrograms were performed in urethane-anesthetized rats. The in vitro and in vivo reactive oxygen species levels and pathological changes in formalin-fixed bladder sections were evaluated. Western blotting and immunohistochemistry elucidated the pathophysiological mechanisms of oxidative stress-induced apoptosis, autophagy, and pyroptosis. P-phenylenediamine increased voiding frequency, blood and urinary bladder levels of reactive oxygen species, and neutrophil and mast cell infiltration. It also upregulated biomarkers of autophagy (LC3 II), apoptosis (poly (ADP-ribose) polymerase), and pyroptosis (Caspase 1). WCT003 and WCT006 ameliorated reactive oxygen species production, inflammation, apoptosis, autophagy, pyroptosis, and bladder hyperactivity. P-phenylenediamine increased oxidative stress, inflammatory leukocytosis, autophagy, apoptosis, and pyroptosis formation within the urinary bladder. Novel synthetic nickel-containing superoxide dismutase mimics relieved p-phenylenediamine-induced bladder inflammation and voiding dysfunction.
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Affiliation(s)
- Bing-Juin Chiang
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei City 11677, Taiwan
- Department of Urology, Cardinal Tien Hospital, New Taipei City 23148, Taiwan
| | - Tien-Wen Chen
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei City 11677, Taiwan
| | - Shiu-Dong Chung
- Department of Urology, Far-Eastern Memorial Hospital, New Taipei City 220, Taiwan
- Graduate Program in Biomedical Informatics, College of Informatics, Yuan-Ze University, Chungli 320, Taiwan
| | - Way-Zen Lee
- Department of Chemistry, College of Science, National Taiwan Normal University, Taipei City 11677, Taiwan
| | - Chiang-Ting Chien
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei City 11677, Taiwan
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30
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Chen HY, Chen CJ, Chen WC, Wang SJ, Chen YH. A promising protein responsible for overactive bladder in ovariectomized mice. Taiwan J Obstet Gynecol 2017; 56:196-203. [PMID: 28420508 DOI: 10.1016/j.tjog.2016.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2016] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Ovariectomy (OVX) in mice is a model mimicking a neuro-electronic proof of an overactive bladder in postmenopausal women. Overactive bladder (OAB) was recently found to be due to an altered gap junction protein in a rat model. Thus, this study was conducted to evaluate changes in cell junction protein expression and composition in the bladder of OVX mice. MATERIALS AND METHODS Thirty-six virgin female mice were randomized into three groups: mice with a sham operation only (control), OVX mice without estradiol (E2) replacement, and OVX mice with E2 replacement (OVX + E2). Cystometry assessment was conducted and cell junction-associated protein zonula occludens-2 (ZO-2) expression was measured after 8 weeks. Voiding interval values (time between voids) were assessed in mice under anesthesia. After measurements, the bladders were removed for proteomic analysis using the label-free quantitative proteomics and liquid chromatography-mass spectrometry technology. Lastly, immunohistochemistry (IHC) and Western blot were used to confirm the location and level, respectively, of ZO-2 expression. RESULTS We identified 73 differentially expressed proteins in the bladder of OVX mice. The OVX mice showed significantly lower voiding interval values. Voiding interval values were significantly higher in the OVX + E2 group than in the OVX group. Urothelial thicknesses in the bladder were also significantly lower in the OVX group than in the control group. E2 replacement reversed the urothelium layers. Additionally, the expression of ZO-2, a tight junction protein, was the most affected by OVX treatment. IHC and Western blot confirmed the downregulation of ZO-2 in the bladder of OVX mice. Expression of ZO-2 protein was significantly increased in OVX + E2 group compared with OVX group. CONCLUSION This exploratory study estimated changes in protein expression and composition in the bladder of OVX mice. These changes may be associated with the molecular mechanisms of OAB.
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Affiliation(s)
- Huey-Yi Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Proteomics Core Laboratory, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Departments of Obstetrics and Gynecology, Medical Research, and Urology, Sex Hormone Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Proteomics Core Laboratory, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Departments of Obstetrics and Gynecology, Medical Research, and Urology, Sex Hormone Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Chi Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Proteomics Core Laboratory, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Departments of Obstetrics and Gynecology, Medical Research, and Urology, Sex Hormone Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Shih-Jing Wang
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Proteomics Core Laboratory, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, Proteomics Core Laboratory, Research Center for Chinese Medicine & Acupuncture, China Medical University, Taichung, Taiwan; Departments of Obstetrics and Gynecology, Medical Research, and Urology, Sex Hormone Research Center, China Medical University Hospital, Taichung, Taiwan; Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan.
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Kerdraon J, Peyronnet B, Gamé X, Fatton B, Haddad R, Hentzen C, Jeandel C, Mares P, Mezzadri M, Petit AC, Robain G, Vetel JM, Amarenco G. Physiopathologie de l’hypoactivité détrusorienne de la personne âgée. Prog Urol 2017; 27:402-412. [DOI: 10.1016/j.purol.2017.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/13/2017] [Indexed: 01/21/2023]
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Lin AH, Liu MH, Ko HKB, Perng DW, Lee TS, Kou YR. Inflammatory Effects of Menthol vs. Non-menthol Cigarette Smoke Extract on Human Lung Epithelial Cells: A Double-Hit on TRPM8 by Reactive Oxygen Species and Menthol. Front Physiol 2017; 8:263. [PMID: 28496415 PMCID: PMC5406458 DOI: 10.3389/fphys.2017.00263] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/10/2017] [Indexed: 11/21/2022] Open
Abstract
Clinical studies suggest that smokers with chronic obstructive pulmonary disease who use menthol cigarettes may display more severe lung inflammation than those who smoke non-menthol cigarette. However, the mechanisms for this difference remain unclear. Menthol is a ligand of transient receptor potential melastatin-8 (TRPM8), a Ca2+-permeant channel sensitive to reactive oxygen species (ROS). We previously reported that exposure of human bronchial epithelial cells (HBECs) to non-menthol cigarette smoke extract (Non-M-CSE) triggers a cascade of inflammatory signaling leading to IL-8 induction. In this study, we used this in vitro model to compare the inflammatory effects of menthol cigarette smoke extract (M-CSE) and Non-M-CSE and delineate the mechanisms underlying the differences in their impacts. Compared with Non-M-CSE, M-CSE initially increased a similar level of extracellular ROS, suggesting the equivalent oxidant potency. However, M-CSE subsequently produced more remarkable elevations in intracellular Ca2+, activation of the mitogen-activated protein kinases (MAPKs)/nuclear factor-κB (NF-κB) signaling, and IL-8 induction. The extracellular ROS responses to both CSE types were totally inhibited by N-acetyl-cysteine (NAC; a ROS scavenger). The intracellular Ca2+ responses to both CSE types were also totally prevented by NAC, AMTB (a TRPM8 antagonist), or EGTA (an extracellular Ca2+ chelator). The activation of the MAPK/NF-κB signaling and induction of IL-8 to both CSE types were suppressed to similar levels by NAC, AMTB, or EGTA. These results suggest that, in addition to ROS generated by both CSE types, the menthol in M-CSE may act as another stimulus to further activate TRPM8 and induce the observed responses. We also found that menthol combined with Non-M-CSE induced greater responses of intracellular Ca2+ and IL-8 compared with Non-M-CSE alone. Moreover, we confirmed the essential role of TRPM8 in these responses to Non-M-CSE or M-CSE and the difference in these responses between the both CSE types using HBECs with TRPM8 knockdown and TRPM8 knockout, and using HEK293 cells transfected with hTRPM8. Thus, compared with exposure to Non-M-CSE, exposure to M-CSE induced greater TRPM8-mediated inflammatory responses in HBECs. These augmented effects may be due to a double-hit on lung epithelial TRPM8 by ROS generated from CSE and the menthol in M-CSE.
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Affiliation(s)
- An-Hsuan Lin
- Department of Physiology, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
| | - Meng-Han Liu
- Department of Physiology, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
| | - Hsin-Kuo B Ko
- Department of Chest Medicine, Taipei Veterans General HospitalTaipei, Taiwan
| | - Diahn-Warng Perng
- Department of Chest Medicine, Taipei Veterans General HospitalTaipei, Taiwan
| | - Tzong-Shyuan Lee
- Department of Physiology, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
| | - Yu Ru Kou
- Department of Physiology, School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
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WOJTAS E, ZACHWIEJA A, ZWYRZYKOWSKA A, KUPCZYŃSKI R, MARYCZ K. The application of mesenchymal progenitor stem cells for the reduction of oxidative stress in animals. Turk J Biol 2017. [DOI: 10.3906/biy-1603-13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Li T, Chen S, Feng T, Dong J, Li Y, Li H. Rutin protects against aging-related metabolic dysfunction. Food Funct 2016; 7:1147-54. [PMID: 26804783 DOI: 10.1039/c5fo01036e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Aging is a complex process which is accompanied by multiple related chronic diseases. Among them, metabolic dysfunction is one of the most important aging-related disorders. In the present study, we aimed to investigate the effect of rutin on aging-related metabolic dysfunction. We found that the increase of fasting blood glucose, insulin levels, blood pressure and HOMA-IR in aged rats was significantly inhibited by rutin. In addition, rutin improved glucose and insulin tolerance in aged rats, as reflected by decreased glucose level in IPGTT and IPITT test. Rutin treatment notably increased Akt and IRS-1 phosphorylation in the livers of old rats. The increase of inflammatory markers, such as IL-1β and TNFα, was prevented by the rutin administration. Moreover, in circulation and livers of old rats, rutin treatment significantly decreased the content of TG. Rutin also inhibited the increase of serum AST and ALT levels. Furthermore, rutin treatment markedly inhibited aging-related mitochondrial dysfunction, ER stress, and oxidative stress, as evidenced by increased oxygen consumption rate and activities of Na(+)/K(+)-ATPase and Ca2(+)-ATPase, decreased expression of ATF3 and GRP78, decreased level of MDA, increased content of GSH and enhanced activity of SOD in aged rats. We show that the administration of rutin could effectively improve aging-related metabolic dysfunction. The amelioration of inflammation, lipid accumulation, mitochondrial dysfunction, ER stress, and oxidative stress may be involved in the effect of rutin on aging-related metabolic dysfunction. These findings provide novel insights into the potential use of rutin in the intervention of aging and its related metabolic diseases.
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Affiliation(s)
- Tianyi Li
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
| | - Sufang Chen
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
| | - Tao Feng
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
| | - Jie Dong
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
| | - Yuanyuan Li
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
| | - Hua Li
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan Province, China.
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Nicholas S, Yuan SY, Brookes SJH, Spencer NJ, Zagorodnyuk VP. Hydrogen peroxide preferentially activates capsaicin-sensitive high threshold afferents via TRPA1 channels in the guinea pig bladder. Br J Pharmacol 2016; 174:126-138. [PMID: 27792844 DOI: 10.1111/bph.13661] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 09/22/2016] [Accepted: 10/19/2016] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE There is increasing evidence suggesting that ROS play a major pathological role in bladder dysfunction induced by bladder inflammation and/or obstruction. The aim of this study was to determine the effect of H2 O2 on different types of bladder afferents and its mechanism of action on sensory neurons in the guinea pig bladder. EXPERIMENTAL APPROACH 'Close-to-target' single unit extracellular recordings were made from fine branches of pelvic nerves entering the guinea pig bladder, in flat sheet preparations, in vitro. KEY RESULTS H2 O2 (300-1000 μM) preferentially and potently activated capsaicin-sensitive high threshold afferents but not low threshold stretch-sensitive afferents, which were only activated by significantly higher concentrations of hydrogen peroxide. The TRPV1 channel agonist, capsaicin, excited 86% of high threshold afferents. The TRPA1 channel agonist, allyl isothiocyanate and the TRPM8 channel agonist, icilin activated 72% and 47% of capsaicin-sensitive high threshold afferents respectively. The TRPA1 channel antagonist, HC-030031, but not the TRPV1 channel antagonist, capsazepine or the TRPM8 channel antagonist, N-(2-aminoethyl)-N-[[3-methoxy-4-(phenylmethoxy)phenyl]methyl]thiophene-2-carboxamide, significantly inhibited the H2 O2 -induced activation of high threshold afferents. Dimethylthiourea and deferoxamine did not significantly change the effect of H2 O2 on high threshold afferents. CONCLUSIONS AND IMPLICATIONS The findings show that H2 O2 , in the concentration range detected in inflammation or reperfusion after ischaemia, evoked long-lasting activation of the majority of capsaicin-sensitive high threshold afferents, but not low threshold stretch-sensitive afferents. The data suggest that the TRPA1 channels located on these capsaicin-sensitive afferent fibres are probable targets of ROS released during oxidative stress.
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Affiliation(s)
- S Nicholas
- Discipline of Human Physiology & Centre for Neuroscience, Flinders University of South Australia, Adelaide, SA, Australia
| | - S Y Yuan
- Discipline of Anatomy and Histology & Centre for Neuroscience, Flinders University of South Australia, Adelaide, SA, Australia
| | - S J H Brookes
- Discipline of Human Physiology & Centre for Neuroscience, Flinders University of South Australia, Adelaide, SA, Australia
| | - N J Spencer
- Discipline of Human Physiology & Centre for Neuroscience, Flinders University of South Australia, Adelaide, SA, Australia
| | - V P Zagorodnyuk
- Discipline of Human Physiology & Centre for Neuroscience, Flinders University of South Australia, Adelaide, SA, Australia
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Andersson KE, Boedtkjer DB, Forman A. The link between vascular dysfunction, bladder ischemia, and aging bladder dysfunction. Ther Adv Urol 2016; 9:11-27. [PMID: 28042309 DOI: 10.1177/1756287216675778] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The vascular supply to the human bladder is derived mainly from the superior and inferior vesical arteries, the latter being directly connected to the internal iliac artery. Aging is associated with an impairment of blood vessel function and changes may occur in the vasculature at the molecular, cellular and functional level. Pelvic arterial insufficiency may play an important role in the development of bladder dysfunctions such as detrusor overactivity (DO) and the overactive bladder syndrome. Chronic ischemia-related bladder dysfunction may progress to bladder underactivity and it would be desirable to treat not only lower urinary tract symptoms (LUTS) induced by chronic ischemia, but also the progression of the morphological bladder changes. Studies in experimental models in rabbits and rats have shown that pelvic arterial insufficiency may result in significant bladder ischemia with reduced bladder wall oxygen tension. In turn, this will lead to oxidative stress associated with upregulation of oxidative stress-sensitive genes, increased muscarinic receptor activity, ultrastructural damage, and neurodegeneration. The phosphodiesterase type 5 (PDE5) inhibitor tadalafil, the α1-adrenoceptor (AR) blocker silodosin, the β3-AR agonist mirabegron, and the free radical scavenger melatonin, exerted a protecting effect on urodynamic parameters, and on functional and morphological changes of the bladder demonstrable in vitro. Since the agents tested are used clinically for relieving LUTS, the results from the animal models seem to have translational value, and may be of relevance for designing clinical studies to demonstrate if the drugs may prevent progression of ischemia-related functional and morphological bladder changes.
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Affiliation(s)
- Karl-Erik Andersson
- Institute of Clinical Medicine, Department of Obstetrics and Gynecology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK 8200 Aarhus N, Denmark
| | | | - Axel Forman
- Department of Gynecology and Obstetrics, Aarhus University Hospital, Denmark
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Borowiec AS, Sion B, Chalmel F, D Rolland A, Lemonnier L, De Clerck T, Bokhobza A, Derouiche S, Dewailly E, Slomianny C, Mauduit C, Benahmed M, Roudbaraki M, Jégou B, Prevarskaya N, Bidaux G. Cold/menthol TRPM8 receptors initiate the cold-shock response and protect germ cells from cold-shock-induced oxidation. FASEB J 2016; 30:3155-70. [PMID: 27317670 PMCID: PMC5001517 DOI: 10.1096/fj.201600257r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/23/2016] [Indexed: 12/21/2022]
Abstract
Testes of most male mammals present the particularity of being externalized from the body and are consequently slightly cooler than core body temperature (4-8°C below). Although, hypothermia of the testis is known to increase germ cells apoptosis, little is known about the underlying molecular mechanisms, including cold sensors, transduction pathways, and apoptosis triggers. In this study, using a functional knockout mouse model of the cold and menthol receptors, dubbed transient receptor potential melastatine 8 (TRPM8) channels, we found that TRPM8 initiated the cold-shock response by differentially modulating cold- and heat-shock proteins. Besides, apoptosis of germ cells increased in proportion to the cooling level in control mice but was independent of temperature in knockout mice. We also observed that the rate of germ cell death correlated positively with the reactive oxygen species level and negatively with the expression of the detoxifying enzymes. This result suggests that the TRPM8 sensor is a key determinant of germ cell fate under hypothermic stimulation.-Borowiec, A.-S., Sion, B., Chalmel, F., Rolland, A. D., Lemonnier, L., De Clerck, T., Bokhobza, A., Derouiche, S., Dewailly, E., Slomianny, C., Mauduit, C., Benahmed, M., Roudbaraki, M., Jégou, B., Prevarskaya, N., Bidaux, G. Cold/menthol TRPM8 receptors initiate the cold-shock response and protect germ cells from cold-shock-induced oxidation.
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Affiliation(s)
| | - Benoit Sion
- Pharmacologie Fondamentale et Clinique de la Douleur, INSERM, U1107, Neuro-Dol, Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | | | | | - Loïc Lemonnier
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Tatiana De Clerck
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Alexandre Bokhobza
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Sandra Derouiche
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Etienne Dewailly
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Christian Slomianny
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Claire Mauduit
- Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, INSERM, U1065, Nice, France; and
| | - Mohamed Benahmed
- Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, INSERM, U1065, Nice, France; and
| | - Morad Roudbaraki
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Bernard Jégou
- INSERM, U1085-Irset, Campus de Beaulieu, Rennes, France
| | - Natalia Prevarskaya
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France
| | - Gabriel Bidaux
- Physiologie Cellulaire (PHYCEL), INSERM, U1003, Université Lille, Lille, France; Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM), UMR8523, Biophotonic Team, Villeneuve d'Ascq, France
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Kilic MK, Kizilarslanoglu MC, Kara O, Arik G, Varan HD, Kuyumcu ME, Yesil Y, Yavuz BB, Halil M, Cankurtaran M. Hypovitaminosis D is an independent associated factor of overactive bladder in older adults. Arch Gerontol Geriatr 2016; 65:128-32. [PMID: 27018570 DOI: 10.1016/j.archger.2016.03.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 03/08/2016] [Accepted: 03/22/2016] [Indexed: 11/28/2022]
Abstract
AIM OF THE STUDY Urinary incontinence and vitamin D deficiency are common problems encountered in geriatric population. We aimed to investigate if there is a relationship between these conditions. SUBJECTS AND METHOD Among 2281 patients who were admitted to our geriatric medicine outpatient clinic spanning the last three years, 705 patients with known vitamin D status, urinary incontinence and subtype, and calcium plus vitamin D therapy data were included in statistical analysis. Patients who are using calcium plus vitamin D therapy were excluded. SPSS (Statistical Package for Social Sciences) version 15.0 for Windows was used for statistical analysis and p<0.05 was considered as statistically significant. RESULTS Mean age of the study population was 72.3±6.4years and 62.8% were female. Plasma vitamin D level (OR: 0.968, 95%CI: 0.943-0.993, p=0.013), MMSE (Mini Mental State Examination) score (OR: 0.944, 95%CI: 0.902-0.989, p=0.014), and serum ALP (Alkaline Phosphatase) level (OR: 0.995, 95%CI: 0.992-0.998, p=0.001) were found to be inversely correlated factors, and serum calcium level (OR: 1.772, 95%CI: 1.008-2.888, p=0.022) was found to be a positively correlated factor of overactive bladder. Considering the different clinical subtypes of urinary incontinence, only urgency incontinence was associated with lower plasma vitamin D level (p=0.013). CONCLUSIONS Vitamin D deficiency and insufficiency are independent associated factors for overactive bladder in older adults. This is explicable by effects of vitamin D on muscle growth and function.
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Affiliation(s)
- Mustafa Kemal Kilic
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey.
| | - Muhammet Cemal Kizilarslanoglu
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Ozgur Kara
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Gunes Arik
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Hacer Dogan Varan
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Mehmet Emin Kuyumcu
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Yusuf Yesil
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Burcu Balam Yavuz
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Meltem Halil
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
| | - Mustafa Cankurtaran
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Geriatric Medicine, Ankara, Turkey
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Heppner TJ, Tykocki NR, Hill-Eubanks D, Nelson MT. Transient contractions of urinary bladder smooth muscle are drivers of afferent nerve activity during filling. ACTA ACUST UNITED AC 2016; 147:323-35. [PMID: 26976828 PMCID: PMC4810069 DOI: 10.1085/jgp.201511550] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/12/2016] [Indexed: 01/23/2023]
Abstract
Activation of afferent nerves during urinary bladder (UB) filling conveys the sensation of UB fullness to the central nervous system (CNS). Although this sensory outflow is presumed to reflect graded increases in pressure associated with filling, UBs also exhibit nonvoiding, transient contractions (TCs) that cause small, rapid increases in intravesical pressure. Here, using an ex vivo mouse bladder preparation, we explored the relative contributions of filling pressure and TC-induced pressure transients to sensory nerve stimulation. Continuous UB filling caused an increase in afferent nerve activity composed of a graded increase in baseline activity and activity associated with increases in intravesical pressure produced by TCs. For each ∼4-mmHg pressure increase, filling pressure increased baseline afferent activity by ∼60 action potentials per second. In contrast, a similar pressure elevation induced by a TC evoked an ∼10-fold greater increase in afferent activity. Filling pressure did not affect TC frequency but did increase the TC rate of rise, reflecting a change in the length-tension relationship of detrusor smooth muscle. The frequency of afferent bursts depended on the TC rate of rise and peaked before maximum pressure. Inhibition of small- and large-conductance Ca(2+)-activated K(+) (SK and BK) channels increased TC amplitude and afferent nerve activity. After inhibiting detrusor muscle contractility, simulating the waveform of a TC by gently compressing the bladder evoked similar increases in afferent activity. Notably, afferent activity elicited by simulated TCs was augmented by SK channel inhibition. Our results show that afferent nerve activity evoked by TCs represents the majority of afferent outflow conveyed to the CNS during UB filling and suggest that the maximum TC rate of rise corresponds to an optimal length-tension relationship for efficient UB contraction. Furthermore, our findings implicate SK channels in controlling the gain of sensory outflow independent of UB contractility.
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Affiliation(s)
- Thomas J Heppner
- Department of Pharmacology, University of Vermont, Burlington, VT 05405
| | - Nathan R Tykocki
- Department of Pharmacology, University of Vermont, Burlington, VT 05405
| | | | - Mark T Nelson
- Department of Pharmacology, University of Vermont, Burlington, VT 05405 Institute of Cardiovascular Sciences, University of Manchester, Manchester M13 9NT, England, UK
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Kuo HC. OnabotulinumtoxinA Treatment for Overactive Bladder in the Elderly: Practical Points and Future Prospects. Drugs Aging 2015; 33:1-9. [PMID: 26666524 DOI: 10.1007/s40266-015-0335-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Overactive bladder (OAB) increases with age. OAB in the elderly may be associated with increased risks of falls, fractures and mortality. Degeneration of the central nervous system in the elderly is proposed as one of the pathogenic factors for OAB. Recently, onabotulinumtoxinA (BoNT-A) 100 U has been demonstrated to be well tolerated, and it significantly improves all OAB symptoms and health-related quality of life in patients who are inadequately managed with anticholinergics. However, an increased risk of a large post-void residual volume and a lower long-term success rate were noted in frail elderly patients. Careful patient selection for BoNT-A injection treatment is important in elderly OAB patients. Patients who are frail, are elderly, have comorbidity or have a post-void residual volume >100 mL should be monitored carefully after BoNT-A injection treatment to prevent urinary retention and subsequent urinary tract infection. Use of liposomes to carry BoNT-A across the urothelial barrier decreases urgency-frequency episodes without compromising detrusor contractility and might avoid urinary tract infection. This treatment might prevent undesired detrusor underactivity after BoNT-A injection treatment, especially in elderly patients who have low detrusor contractility. For treatment of OAB in the elderly, clinicians should be aware of the balance between therapeutic efficacy and safety.
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Affiliation(s)
- Hann-Chorng Kuo
- Department of Urology, Buddhist Tzu Chi General Hospital, Tzu Chi University, 707, Section 3, Chung Yang Road, Hualien, Taiwan.
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41
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Yoon BI, Han KD, Lee KW, Kwon HS, Kim SW, Sohn DW, Cho YH, Ha US. Insulin Resistance Is Associated with Prevalence of Physician-Diagnosed Urinary Incontinence in Postmenopausal Non-Diabetic Adult Women: Data from the Fourth Korea National Health and Nutrition Examination Survey. PLoS One 2015; 10:e0141720. [PMID: 26529410 PMCID: PMC4631470 DOI: 10.1371/journal.pone.0141720] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/11/2015] [Indexed: 12/04/2022] Open
Abstract
Objective To investigate the association between insulin resistance (IR) and urinary incontinence in Korean adult women by analyzing the data from the Korea National Health and Nutrition Examination Survey IV (KNHANES) 2007–2009 Methods A nationally representative sample of 5318 non-diabetic Korean women ≥19-years-of-age (3043 premenopausal and 2275 postmenopausal women) was included from KNHANES 2008–2010. IR was measured using the homeostasis model assessment of IR (HOMA-IR). Participants in the highest and lowest quartile of HOMA-IR were defined as insulin-resistant and insulin-sensitive respectively. Women who have current physician-diagnosed urinary incontinence were classified as having urinary incontinence. Results Incontinence was found in 9.18% of the total population, 8.51% of the premenopausal population, and 10.86% of the postmenopausal population. The prevalence of incontinence increased with age, reaching a peak at 60-69-years-of-age. The prevalence of urinary incontinence increased significantly with higher HOMA-IR quartiles in pre- and post-menopausal women (p for linear association = 0.0458 and 0.0009 respectively). Among post-menopausal women, those in the highest quartile of HOMA-IR were significantly more likely to have urinary incontinence compared to those in the lowest quartile [adjusted odds ratio, 1.72; 95% confidence interval, 1.07–2.77]. However premenopausal population exhibited no association between incontinence and HOMA-IR quartiles Conclusion Our results suggest that the prevalence of incontinence increased across HOMA-IR in non-diabetic adult women, and especially, IR might be a risk factor for incontinence in postmenopausal non-diabetic women.
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Affiliation(s)
- Byung Il Yoon
- Department of Urology, The Catholic Kwandong University of Korea, International St Mary’s hospital, Incheon, Korea
| | - Kyung-Do Han
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyu Won Lee
- Department of Urology, College of Medicine, The Catholic University of Korea, St Paul’s hospital, Seoul, Korea
| | - Hyuk Sang Kwon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Yeoido St Mary’s hospital, Seoul, Korea
| | - Sun Wook Kim
- Department of Urology, College of Medicine, The Catholic University of Korea, Yeoido St Mary’s hospital, Seoul, Korea
| | - Dong Wan Sohn
- Department of Urology, College of Medicine, The Catholic University of Korea, Yeoido St Mary’s hospital, Seoul, Korea
| | - Yong-Hyun Cho
- Department of Urology, College of Medicine, The Catholic University of Korea, Yeoido St Mary’s hospital, Seoul, Korea
| | - U-Syn Ha
- Department of Urology, College of Medicine, The Catholic University of Korea, Yeoido St Mary’s hospital, Seoul, Korea
- * E-mail:
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Kullmann FA, Birder LA, Andersson KE. Translational Research and Functional Changes in Voiding Function in Older Adults. Clin Geriatr Med 2015; 31:535-48. [PMID: 26476114 PMCID: PMC4865381 DOI: 10.1016/j.cger.2015.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Age-related LUT dysfunctions result from complex processes controlled by multiple genetic, epigenetic, and environmental factors and account for high costs of health care. This article discusses risk factors that may play a role in age-related LUT dysfunction and presents available data comparing structural and functional changes that occur with aging in the bladder of humans and animal models. A better understanding of factors and mechanisms underlying LUT symptoms in the older population may lead to therapeutic interventions to reduce these dysfunctions.
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Affiliation(s)
- Florenta Aura Kullmann
- Renal-Electrolyte Division, Medicine Department, University of Pittsburgh School of Medicine, 3500 Terrace Street, A1220 Scaife Hall, Pittsburgh, PA 15261, USA
| | - Lori Ann Birder
- Renal-Electrolyte Division, Medicine Department, University of Pittsburgh School of Medicine, 3500 Terrace Street, A1207 Scaife Hall, Pittsburgh, PA 15261, USA; Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Karl-Erik Andersson
- Department of Urology, Institute for Regenerative Medicine, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Boulevard, Winston Salem, NC 27157, USA; AIAS, Aarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, Building 1632, Aarhus C 8000, Denmark.
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Ranson RN, Saffrey MJ. Neurogenic mechanisms in bladder and bowel ageing. Biogerontology 2015; 16:265-84. [PMID: 25666896 PMCID: PMC4361768 DOI: 10.1007/s10522-015-9554-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 01/28/2015] [Indexed: 01/18/2023]
Abstract
The prevalence of both urinary and faecal incontinence, and also chronic constipation, increases with ageing and these conditions have a major impact on the quality of life of the elderly. Management of bladder and bowel dysfunction in the elderly is currently far from ideal and also carries a significant financial burden. Understanding how these changes occur is thus a major priority in biogerontology. The functions of the bladder and terminal bowel are regulated by complex neuronal networks. In particular neurons of the spinal cord and peripheral ganglia play a key role in regulating micturition and defaecation reflexes as well as promoting continence. In this review we discuss the evidence for ageing-induced neuronal dysfunction that might predispose to neurogenic forms of incontinence in the elderly.
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Affiliation(s)
- Richard N Ranson
- Department of Applied Sciences (Biomedical Sciences), Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK,
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44
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Zholos AV. TRP Channels in Respiratory Pathophysiology: the Role of Oxidative, Chemical Irritant and Temperature Stimuli. Curr Neuropharmacol 2015; 13:279-91. [PMID: 26411771 PMCID: PMC4598440 DOI: 10.2174/1570159x13666150331223118] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 12/13/2022] Open
Abstract
There is rapidly growing evidence indicating multiple and important roles of Ca(2+)- permeable cation TRP channels in the airways, both under normal and disease conditions. The aim of this review was to summarize the current knowledge of TRP channels in sensing oxidative, chemical irritant and temperature stimuli by discussing expression and function of several TRP channels in relevant cell types within the respiratory tract, ranging from sensory neurons to airway smooth muscle and epithelial cells. Several of these channels, such as TRPM2, TRPM8, TRPA1 and TRPV1, are discussed in much detail to show that they perform diverse, and often overlapping or contributory, roles in airway hyperreactivity, inflammation, asthma, chronic obstructive pulmonary disease and other respiratory disorders. These include TRPM2 involvement in the disruption of the bronchial epithelial tight junctions during oxidative stress, important roles of TRPA1 and TRPV1 channels in airway inflammation, hyperresponsiveness, chronic cough, and hyperplasia of airway smooth muscles, as well as TRPM8 role in COPD and mucus hypersecretion. Thus, there is increasing evidence that TRP channels not only function as an integral part of the important endogenous protective mechanisms of the respiratory tract capable of detecting and ensuring proper physiological responses to various oxidative, chemical irritant and temperature stimuli, but that altered expression, activation and regulation of these channels may also contribute to the pathogenesis of respiratory diseases.
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Affiliation(s)
- Alexander V Zholos
- Department of Biophysics, Educational and Scientific Centre "Institute of Biology", Taras Shevchenko Kiev National University, 2 Academician Glushkov Avenue, Kiev 03022, Ukraine.
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