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Zhang W, Yang Q, Song Y, Liu W, Li Y. Exploratory metabolomic analysis for characterizing the metabolic profile of the urinary bladder under estrogen deprivation. Front Endocrinol (Lausanne) 2024; 15:1384115. [PMID: 38883607 PMCID: PMC11176512 DOI: 10.3389/fendo.2024.1384115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/20/2024] [Indexed: 06/18/2024] Open
Abstract
Background Estrogen homeostasis is crucial for bladder function, and estrogen deprivation resulting from menopause, ovariectomy or ovarian dysfunction may lead to various bladder dysfunctions. However, the specific mechanisms are not fully understood. Methods We simulated estrogen deprivation using a rat ovariectomy model and supplemented estrogen through subcutaneous injections. The metabolic characteristics of bladder tissue were analyzed using non-targeted metabolomics, followed by bioinformatics analysis to preliminarily reveal the association between estrogen deprivation and bladder function. Results We successfully established a rat model with estrogen deprivation and, through multivariate analysis and validation, identified several promising biomarkers represented by 3, 5-tetradecadiencarnitine, lysoPC (15:0), and cortisol. Furthermore, we explored estrogen deprivation-related metabolic changes in the bladder primarily characterized by amino acid metabolism imbalance. Conclusion This study, for the first time, depicts the metabolic landscape of bladder resulting from estrogen deprivation, providing an important experimental basis for future research on bladder dysfunctions caused by menopause.
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Affiliation(s)
- Wei Zhang
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qingbo Yang
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yingying Song
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenheng Liu
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yao Li
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Lu M, Zhu K, Schulam PG, Chai TC. A non-enzymatic method for dissection of mouse bladder urothelial tissue. Nat Protoc 2019; 14:1280-1292. [PMID: 30894693 DOI: 10.1038/s41596-019-0142-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 01/22/2019] [Indexed: 12/15/2022]
Abstract
Urothelial cells contribute to bladder functions, including urine storage, urine emptying, and innate immune response. Functional studies of urothelial cells usually use either freshly isolated cells or cultured cells. Most methods of isolating urothelial cells require enzymes; however, these techniques remove proteins that connect the cells and disrupt the orientation of the cells within the multilayered urothelium. In addition, PCR or immunoblot results obtained from homogenates of bladder mucosa or whole bladder do not represent pure urothelial cells. We describe a dissection process that does not require enzymes and is able to obtain pure urothelial tissues from mice and humans. This method can isolate single urothelial cells for electrophysiology in situ and can also isolate pure urothelial tissue for PCR, microarray, and immunoblot procedures. The time required to obtain urothelial tissue from one mouse bladder is 15-20 min. This method is simple and time efficient as compared with alternative methods and therefore facilitates our understanding of urothelial biology.
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Affiliation(s)
- Ming Lu
- Department of Urology, Yale University School of Medicine, New Haven, CT, USA.
| | - Kejia Zhu
- Department of Urology, Qilu Hospital of Shandong University, Jinan, China
| | - Peter G Schulam
- Department of Urology, Yale University School of Medicine, New Haven, CT, USA
| | - Toby C Chai
- Department of Urology, Yale University School of Medicine, New Haven, CT, USA. .,Department of Urology, Qilu Hospital of Shandong University, Jinan, China.
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Abelson B, Sun D, Que L, Nebel RA, Baker D, Popiel P, Amundsen CL, Chai T, Close C, DiSanto M, Fraser MO, Kielb SJ, Kuchel G, Mueller ER, Palmer MH, Parker-Autry C, Wolfe AJ, Damaser MS. Sex differences in lower urinary tract biology and physiology. Biol Sex Differ 2018; 9:45. [PMID: 30343668 PMCID: PMC6196569 DOI: 10.1186/s13293-018-0204-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/26/2018] [Indexed: 12/12/2022] Open
Abstract
Females and males differ significantly in gross anatomy and physiology of the lower urinary tract, and these differences are commonly discussed in the medical and scientific literature. However, less attention is dedicated to investigating the varied development, function, and biology between females and males on a cellular level. Recognizing that cell biology is not uniform, especially in the lower urinary tract of females and males, is crucial for providing context and relevance for diverse fields of biomedical investigation. This review serves to characterize the current understanding of biological sex differences between female and male lower urinary tracts, while identifying areas for future research. First, the differences in overall cell populations are discussed in the detrusor smooth muscle, urothelium, and trigone. Second, the urethra is discussed, including anatomic discussions of the female and male urethra followed by discussions of cellular differences in the urothelial and muscular layers. The pelvic floor is then reviewed, followed by an examination of the sex differences in hormonal regulation, the urinary tract microbiome, and the reticuloendothelial system. Understanding the complex and dynamic development, anatomy, and physiology of the lower urinary tract should be contextualized by the sex differences described in this review.
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Affiliation(s)
- Benjamin Abelson
- Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Daniel Sun
- Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Lauren Que
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | | | - Dylan Baker
- UConn Center on Aging, University of Connecticut, 263 Farmington, Farmington, CT, USA
| | - Patrick Popiel
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Cindy L Amundsen
- Department of Obstetrics and Gynecology, Division of Urogynecology and Reconstructive Surgery, Duke University, Durham, NC, USA
| | - Toby Chai
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA.,Department of Urology, Yale School of Medicine, New Haven, CT, USA
| | | | - Michael DiSanto
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Matthew O Fraser
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC, USA
| | - Stephanie J Kielb
- Department of Urology and Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - George Kuchel
- UConn Center on Aging, University of Connecticut, 263 Farmington, Farmington, CT, USA
| | - Elizabeth R Mueller
- Department of Urology, Loyola University Chicago, Maywood, IL, USA.,Department of Obstetrics/Gynecology, Loyola University Chicago, Maywood, IL, USA
| | - Mary H Palmer
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Candace Parker-Autry
- Department of Obstetrics and Gynecology, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Urology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Alan J Wolfe
- Department of Microbiology and Immunology, Loyola University Chicago, Health Sciences Division, Stritch School of Medicine, Maywood, IL, 60153, USA
| | - Margot S Damaser
- Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA. .,Department of Biomedical Engineering, Lerner Research Institute, The Cleveland Clinic, 9500 Euclid Avenue, ND20, Cleveland, OH, 44195, USA. .,Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA.
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Hill WG, Zeidel ML, Bjorling DE, Vezina CM. Void spot assay: recommendations on the use of a simple micturition assay for mice. Am J Physiol Renal Physiol 2018; 315:F1422-F1429. [PMID: 30156116 DOI: 10.1152/ajprenal.00350.2018] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Investigators have for decades used mouse voiding patterns as end points for studying behavioral biology. It is only recently that mouse voiding patterns were adopted for study of lower urinary tract physiology. The spontaneous void spot assay (VSA), a popular micturition assessment tool, involves placing a mouse in an enclosure lined by filter paper and quantifying the resulting urine spot pattern. The VSA has advantages of being inexpensive and noninvasive, but some investigators challenge its ability to distinguish lower urinary tract function from behavioral voiding. A consensus group of investigators who regularly use the VSA was established by the National Institutes of Health in 2015 to address the strengths and weaknesses of the assay, determine whether it can be standardized across laboratories, and determine whether it can be used as a surrogate for evaluating urinary function. Here we leverage experience from the consensus group to review the history of the VSA and its uses, summarize experiments to optimize assay design for urinary physiology assessment, and make best practice recommendations for performing the assay and analyzing its results.
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Affiliation(s)
- Warren G Hill
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School , Boston, Massachusetts
| | - Mark L Zeidel
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School , Boston, Massachusetts
| | - Dale E Bjorling
- Department of Surgical Sciences, University of Wisconsin-Madison , Madison, Wisconsin.,University of Wisconsin-Madison/University of Massachusetts-Boston, George M. O'Brien Center for Benign Urologic Research, Madison, Wisconsin and Boston, Massachusetts
| | - Chad M Vezina
- University of Wisconsin-Madison/University of Massachusetts-Boston, George M. O'Brien Center for Benign Urologic Research, Madison, Wisconsin and Boston, Massachusetts.,Department of Comparative Biosciences, University of Wisconsin-Madison , Madison, Wisconsin
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