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Fashemi BE, Rougeau AK, Salazar AM, Bark SJ, Chappidi R, Brown JW, Cho CJ, Mills JC, Mysorekar IU. A new role for IFRD1 in regulation of ER stress in bladder epithelial homeostasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.09.574887. [PMID: 38260387 PMCID: PMC10802459 DOI: 10.1101/2024.01.09.574887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
A healthy bladder requires the homeostatic maintenance of and rapid regeneration of urothelium upon stress/injury/infection. Several factors have been identified to play important roles in urothelial development, injury and disease response, however, little is known about urothelial regulation at homeostasis. Here, we identify a new role for IFRD1, a stress-induced gene that has recently been demonstrated to play a critical role in adult tissue proliferation and regeneration, in maintenance of urothelial function/ homeostasis in a mouse model. We show that the mouse bladder expresses IFRD1 at homeostasis and its loss alters the global transcriptome of the bladder with significant accumulation of cellular organelles including multivesicular bodies with undigested cargo, lysosomes and mitochondria. We demonstrate that IFRD1 interacts with several mRNA-translation-regulating factors in human urothelial cells and that the urothelium of Ifrd1 -/- mice reveal decreased global translation and enhanced endoplasmic reticulum (ER) stress response. Ifrd1 -/- bladders have activation of the unfolded protein response (UPR) pathway, specifically the PERK arm, with a concomitant increase in oxidative stress and spontaneous exfoliation of urothelial cells. Further, we show that such increase in cell shedding is associated with a compensatory proliferation of the basal cells but impaired regeneration of superficial cells. Finally, we show that upon loss of IFRD1, mice display aberrant voiding behavior. Thus, we propose that IFRD1 is at the center of many crucial cellular pathways that work together to maintain urothelial homeostasis, highlighting its importance as a target for diagnosis and/or therapy in bladder conditions.
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Li Y, Li L, Li B, Liao W, Liu T, Shen F, Hong L. Mechanical stretching induces fibroblasts apoptosis through activating Piezo1 and then destroying actin cytoskeleton. Int J Med Sci 2023; 20:771-780. [PMID: 37213676 PMCID: PMC10198138 DOI: 10.7150/ijms.81666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 04/06/2023] [Indexed: 05/23/2023] Open
Abstract
The anatomical positions of pelvic floor organs are maintained by ligaments and muscles. Stress urinary incontinence (SUI) occurs when the pelvic floor tissues are repeatedly stimulated by excessive mechanical tension that exceeds the bearing capacity of ligaments or muscles. Besides, cells respond mechanically to mechanical stimulation by reconstituting the Piezo1 and cytoskeletal system. The aim of this study is to determine how Piezo1 and actin cytoskeleton are involved in the mechanized stretch (MS) induced apoptosis of human anterior vaginal wall fibroblasts (hAVWFs) and the mechanism. A four-point bending device was used to provide mechanical stretching to establish a cellular mechanical damage model. The apoptosis of hAVWFs cells in non-SUI patients was significantly increased by MS, which exhibited apoptosis rates comparable to those of SUI patients. Based on these findings, Piezo1 connects the actin cytoskeleton to the apoptosis of hAVWFs cells, providing an idea for the clinical diagnosis and treatment of SUI. However, the disassembly of the actin cytoskeleton suppressed the protective effect of Piezo1 silencing on MS. Based on these findings, Piezo1 connects the actin cytoskeleton to apoptosis of hAVWFs, providing new insight for the clinical diagnosis and treatment of SUI.
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Affiliation(s)
- Yang Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
| | - Lu Li
- Department of Gynecology and Obstetrics, the People's Hospital of Three Gorges University/ the First People's Hospital of Yichang
| | - Bingshu Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
| | - Wenxin Liao
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
| | - Tingting Liu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
| | - Fujin Shen
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
- ✉ Corresponding authors: Dr. Li Hong, Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, Hubei Province, P.R. China, E-mail: ; Dr. Fujin Shen, Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, Hubei Province, P.R. China, E-mail:
| | - Li Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
- ✉ Corresponding authors: Dr. Li Hong, Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, Hubei Province, P.R. China, E-mail: ; Dr. Fujin Shen, Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, Hubei Province, P.R. China, E-mail:
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Post WM, Widomska J, Grens H, Coenen MJH, Martens FMJ, Janssen DAW, IntHout J, Poelmans G, Oosterwijk E, Kluivers KB. Molecular Processes in Stress Urinary Incontinence: A Systematic Review of Human and Animal Studies. Int J Mol Sci 2022; 23:ijms23063401. [PMID: 35328824 PMCID: PMC8949972 DOI: 10.3390/ijms23063401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/10/2022] [Accepted: 03/18/2022] [Indexed: 02/01/2023] Open
Abstract
Stress urinary incontinence (SUI) is a common and burdensome condition. Because of the large knowledge gap around the molecular processes involved in its pathophysiology, the aim of this review was to provide a systematic overview of genetic variants, gene and protein expression changes related to SUI in human and animal studies. On 5 January 2021, a systematic search was performed in Pubmed, Embase, Web of Science, and the Cochrane library. The screening process and quality assessment were performed in duplicate, using predefined inclusion criteria and different quality assessment tools for human and animal studies respectively. The extracted data were grouped in themes per outcome measure, according to their functions in cellular processes, and synthesized in a narrative review. Finally, 107 studies were included, of which 35 used animal models (rats and mice). Resulting from the most examined processes, the evidence suggests that SUI is associated with altered extracellular matrix metabolism, estrogen receptors, oxidative stress, apoptosis, inflammation, neurodegenerative processes, and muscle cell differentiation and contractility. Due to heterogeneity in the studies (e.g., in examined tissues), the precise contribution of the associated genes and proteins in relation to SUI pathophysiology remained unclear. Future research should focus on possible contributors to these alterations.
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Affiliation(s)
- Wilke M. Post
- Department of Obstetrics and Gynecology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (W.M.P.); (H.G.)
| | - Joanna Widomska
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (J.W.); (G.P.)
| | - Hilde Grens
- Department of Obstetrics and Gynecology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (W.M.P.); (H.G.)
| | - Marieke J. H. Coenen
- Radboud Institute of Health Sciences, Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - Frank M. J. Martens
- Department of Urology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (F.M.J.M.); (D.A.W.J.); (E.O.)
| | - Dick A. W. Janssen
- Department of Urology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (F.M.J.M.); (D.A.W.J.); (E.O.)
| | - Joanna IntHout
- Department of Health Evidence, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - Geert Poelmans
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (J.W.); (G.P.)
| | - Egbert Oosterwijk
- Department of Urology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (F.M.J.M.); (D.A.W.J.); (E.O.)
| | - Kirsten B. Kluivers
- Department of Obstetrics and Gynecology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (W.M.P.); (H.G.)
- Correspondence:
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Wu L, Guo T, Deng R, Liu L, Yu Y. Apigenin Ameliorates Insulin Resistance and Lipid Accumulation by Endoplasmic Reticulum Stress and SREBP-1c/SREBP-2 Pathway in Palmitate-Induced HepG2 Cells and High-Fat Diet-Fed Mice. J Pharmacol Exp Ther 2021; 377:146-156. [PMID: 33509902 DOI: 10.1124/jpet.120.000162] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 01/21/2021] [Indexed: 02/06/2023] Open
Abstract
Insulin resistance (IR) is the common basis of diabetes and cardiovascular diseases, and its development is closely associated with lipid metabolism disorder. Flavonoids have definite chemical defense effects, including anti-inflammatory effects, anticancer effects, and antimutation effects. However, the function and mechanism of apigenin (AP, a kind of flavonoid) in IR are still unclear. In our study, intracellular fat accumulation model cells and high-fat diet (HFD)-fed model mice were established using palmitate (PA) and HFD. Mechanistically, we first demonstrated that AP could notably downregulate sterol regulatory element-binding protein 1c (SREBP-1c), sterol regulatory element-binding protein 2 (SREBP-2), fatty acid synthase, stearyl-CoA desaturase 1, and 3-hydroxy-3-methyl-glutaryl-CoA reductase in PA-induced hyperlipidemic cells and mice. Functionally, we verified that AP could markedly reduce lipid accumulation in PA-induced hyperlipidemic cells and decrease the body weight, visceral fat weight, IR, and lipid accumulation in HFD-induced hyperlipidemic mice. Besides, we showed that PA could significantly downregulate endoplasmic reticulum stress (ERS)-related proteins and inhibit ERS. Furthermore, we proved that AP could reduce blood lipids by inhibiting ERS in PA-induced hyperlipidemic cells. Meanwhile, 4-phenyl butyric acid (also called ERS alleviator), like AP, could significantly reduce blood lipids and alleviate IR in HFD-fed model mice. Therefore, we concluded that AP could substantially improve the disorder of lipid metabolism, and its mechanism might be related to the decrease of SREBP-1c, SREBP-2, and downstream genes, the inhibition of ERS, and the reduction of blood lipids and IR. SIGNIFICANCE STATEMENT: Apigenin, a nontoxic and naturally sourced flavonoid, has antihyperlipidemic properties in mice and hepatocyte. This study highlights a new mechanism of apigenin and proposes that these hypolipidemic effects are associated with the mitigation of endoplasmic reticulum stress and insulin resistance in diet-induced obesity. This study might provide translational insight into the prevention and treatment of apigenin in hyperlipidemia-related diseases.
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Affiliation(s)
- Liling Wu
- College of Animal Science and Technology, Southwest University, Chongqing, China (L.W., L.L., Y.Y.) and Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College (L.W., T.G.), Department of Clinical Medicine (R.D.), North Sichuan Medical College, Nanchong, Sichuan, China
| | - Tingdong Guo
- College of Animal Science and Technology, Southwest University, Chongqing, China (L.W., L.L., Y.Y.) and Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College (L.W., T.G.), Department of Clinical Medicine (R.D.), North Sichuan Medical College, Nanchong, Sichuan, China
| | - Ranxi Deng
- College of Animal Science and Technology, Southwest University, Chongqing, China (L.W., L.L., Y.Y.) and Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College (L.W., T.G.), Department of Clinical Medicine (R.D.), North Sichuan Medical College, Nanchong, Sichuan, China
| | - Lusheng Liu
- College of Animal Science and Technology, Southwest University, Chongqing, China (L.W., L.L., Y.Y.) and Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College (L.W., T.G.), Department of Clinical Medicine (R.D.), North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yongxiong Yu
- College of Animal Science and Technology, Southwest University, Chongqing, China (L.W., L.L., Y.Y.) and Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College (L.W., T.G.), Department of Clinical Medicine (R.D.), North Sichuan Medical College, Nanchong, Sichuan, China
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Oliveira PWC, Couto MR, de Sousa GJ, Peixoto P, Moraes FSA, de Andrade TU, Bissoli NS. Effects of Drugs, Phytoestrogens, Nutrients and Probiotics on Endothelial Dysfunction in the Estrogen-Deficient State. Curr Pharm Des 2020; 26:3711-3722. [PMID: 32228420 DOI: 10.2174/1381612826666200331084338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 02/22/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Endothelial dysfunction is commonly present in estrogen-deficient states, e.g., after menopause. In the search for alternatives to hormone replacement therapy (HRT), treatments based on phytoestrogens or in non-hormonal mechanisms have been under evaluation. OBJECTIVE Here we aim to present an overview of innovative potential treatments for endothelial dysfunction in estrogen-deficient states, introducing our own preliminary data about the probiotic kefir. METHODS We conducted a review based on a PubMed database search for keywords of interest (Menopause, Ovariectomy, Vascular dysfunction, Hot flashes, Metformin, Statins, Phytoestrogens, Omega-3, Vitamin D, Probiotics). RESULTS Vascular parameters were found to be improved by both metformin and statins through pleiotropic effects, being related to a decrease in oxidative stress and restoration of the nitric oxide pathway. Phytoestrogens such as genistein and resveratrol have also been shown to improve vascular dysfunction, which seems to involve their estrogenic-like actions. Omega-3, vitamin D and its analogues, as well as probiotics, have shown similar vascular beneficial effects in both postmenopausal women and an animal model of ovariectomy (OVX), which could be related to antioxidant and/or anti-inflammatory effects. Moreover, our preliminary data on the probiotic kefir treatment in OVX rats suggested a vascular antioxidant effect. In particular, some evidence points to statins and vitamin D having anti-atherogenic effects. CONCLUSION Pleiotropic effects of common medications and natural compounds could have therapeutic potential for endothelial dysfunction in estrogen-deficient states. They could, therefore, work as future complementary or alternative treatments to HRT.
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Affiliation(s)
- Phablo Wendell C Oliveira
- Department of Physiological Sciences, Universidade Federal do Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Mariana R Couto
- Department of Physiological Sciences, Universidade Federal do Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Glauciene J de Sousa
- Department of Physiological Sciences, Universidade Federal do Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Pollyana Peixoto
- Department of Physiological Sciences, Universidade Federal do Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Flávia S A Moraes
- Department of Pharmacy, University Vila Velha, Vila Velha, ES, Brazil
| | | | - Nazaré S Bissoli
- Department of Physiological Sciences, Universidade Federal do Espirito Santo, Vitoria, Espirito Santo, Brazil
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Abstract
Purpose of review In this article, we will review current dilemmas regarding evaluation and management of the geriatric bladder incorporating concepts of normal changes of aging as well as common lower urinary tract dysfunction. Recent findings Increasing age leads to functional changes in essentially all organ systems including the genitourinary system. Understanding the natural changes with age of the bladder as well as the signs and symptoms of pathologic conditions is paramount to diagnosis and treatment of urologic conditions in the geriatric population. Summary There are several conundrums in the diagnosis and evaluation of the geriatric bladder including the ability of the bladder to store, empty, as well as sensitivity disturbances. Diagnostic testing and goals of treatment should be individualized for each patient and personalized to consider patient comorbidities, limitations, and expectations.
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