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Yadav S, Khan J, Yadav A. Applications of Scaffolds in Tissue Engineering: Current Utilization and Future Prospective. Curr Gene Ther 2024; 24:94-109. [PMID: 37921144 DOI: 10.2174/0115665232262167231012102837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/29/2023] [Accepted: 08/23/2023] [Indexed: 11/04/2023]
Abstract
Current regenerative medicine tactics focus on regenerating tissue structures pathologically modified by cell transplantation in combination with supporting scaffolds and biomolecules. Natural and synthetic polymers, bioresorbable inorganic and hybrid materials, and tissue decellularized were deemed biomaterials scaffolding because of their improved structural, mechanical, and biological abilities.Various biomaterials, existing treatment methodologies and emerging technologies in the field of Three-dimensional (3D) and hydrogel processing, and the unique fabric concerns for tissue engineering. A scaffold that acts as a transient matrix for cell proliferation and extracellular matrix deposition, with subsequent expansion, is needed to restore or regenerate the tissue. Diverse technologies are combined to produce porous tissue regenerative and tailored release of bioactive substances in applications of tissue engineering. Tissue engineering scaffolds are crucial ingredients. This paper discusses an overview of the various scaffold kinds and their material features and applications. Tabulation of the manufacturing technologies for fabric engineering and equipment, encompassing the latest fundamental and standard procedures.
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Affiliation(s)
- Shikha Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Javed Khan
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Agrima Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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Casteleijn FM, de Vries AM, Tu LM, Heesakkers JPFA, Latul Y, Kowalik CR, van Eijndhoven HWF, van Eekelen R, Roovers JPWR. Cost-effectiveness of urethral bulking polydimethylsiloxane-Urolastic® compared with mid-urethral sling surgery for stress urinary incontinence: A two-arm cohort study. BJOG 2023; 130:674-683. [PMID: 36660885 DOI: 10.1111/1471-0528.17396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 11/10/2022] [Accepted: 11/28/2022] [Indexed: 01/21/2023]
Abstract
OBJECTIVE To investigate the cost-effectiveness of urethral bulking polydimethylsiloxane-Urolastic® (PDMS-U) compared with mid-urethral sling (MUS) surgery for stress urinary incontinence (SUI) at 1-year follow-up. DESIGN Prospective, two-arm cohort study with 2-year follow-up. SETTING International multicentre. POPULATION Women with moderate to severe SUI. MAIN OUTCOME MEASURES Primary outcome was subjective cure (Patient Global Impression of Improvement). SECONDARY OUTCOMES objective cure (negative cough stress test), Urogenital Distress Inventory (UDI-6), complications and re-interventions. Cost-effectiveness outcomes: total costs, quality-adjusted life year (QALY) using IIQ7-scores (Incontinence Impact Questionnaire) and EQ-5D-5L, incremental cost-effectiveness ratio (ICER) and monetary benefit (adjusted for baseline confounders). RESULTS In all, 131 PDMS-U and 153 MUS surgery patients were treated. Subjective cure rates for MUS surgery and PDMS-U were, respectively: 101/112 (90%) versus 40/87 (46%), adjusted odds ratio (aOR; for age, body mass index [BMI], severity, type of urinary incontinence and previous SUI procedure) was 4.9. Objective cure rates for MUS surgery and PDMS-U were respectively: 98/109 (90%) versus 58/92 (63%), aOR 5.4. Average total costs for PDMS-U and MUS surgery were €3567 and €6688. ICER for MUS surgery cost €15 598 per IIQ QALY and €37 408 per EQ-5D-5L QALY. With a willingness to pay (WTP) of €25 000, MUS has a 84% chance of being cost-effective using IIQ, whereas PDMS-U has a 99% chance of being cost-effective using EQ-5D-5L. CONCLUSION MUS surgery is more cost-effective in realising improved disease-specific quality of life (QoL), while PDMS-U is more cost-effective in realising improved generic QoL.
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Affiliation(s)
- Fenne M Casteleijn
- Department of Obstetrics and Gynecology, Amsterdam UMC, Univ of Amsterdam, Amsterdam, The Netherlands
| | - Allert M de Vries
- Department of Urology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Le Mai Tu
- Department of Urology, University of Sherbrooke, Sherbrooke, Quebec, Canada
| | | | - Yani Latul
- Department of Obstetrics and Gynecology, Amsterdam UMC, Univ of Amsterdam, Amsterdam, The Netherlands
| | - Claudia R Kowalik
- Department of Obstetrics and Gynecology, Amsterdam UMC, Univ of Amsterdam, Amsterdam, The Netherlands
| | | | - Rik van Eekelen
- Department of Obstetrics and Gynecology, Amsterdam UMC, Univ of Amsterdam, Amsterdam, The Netherlands
| | - Jan-Paul W R Roovers
- Department of Obstetrics and Gynecology, Amsterdam UMC, Univ of Amsterdam, Amsterdam, The Netherlands
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Serati M, Braga A, Salvatore S, Torella M, Di Dedda MC, Scancarello C, Cimmino C, De Rosa A, Frigerio M, Candiani M, Ruffolo AF. Up-to-Date Procedures in Female Stress Urinary Incontinence Surgery: A Concise Review on Bulking Agents Procedures. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58060775. [PMID: 35744038 PMCID: PMC9227870 DOI: 10.3390/medicina58060775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022]
Abstract
To avoid complications related to mid-urethral slings (MUS), alternative procedures to treat stress urinary incontinence (SUI), such as urethral bulking agents (UBAs) have been adopted. The aim of this review is to narratively report the efficacy and safety of UBAs for SUI treatment. For this review, research from PubMed and EMBASE was performed to evaluate relevant studies that were undertaken from January 2012 to January 2022. Nineteen prospective studies were included. Several definitions of subjective and objective success were adopted. At a follow-up of <24 months, significant improvement was widely observed, even if with a heterogeneous rate of success between 32.7−90%, and a reinjection rate of 8.3−77.3%. Compared with other procedures, MUS resulted as significantly superior to UBAs but was balanced by a higher complication rate. Acute urinary retention, urinary tract infection and de novo urgency, and other complications, such as injection site rupture, urethral erosion and particle migration have been described after UBAs. SUI after UBAs treatment resulted in improvements in all studies and can be considered a safe and effective option to treat SUI. However, homogenous and longer-term data lack, limiting general recommendations. Thus, larger RCTs evaluating long-term effects are required.
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Affiliation(s)
- Maurizio Serati
- Department of Obstetrics and Gynecology, Del Ponte Hospital, University of Insubria, 21100 Varese, Italy; (C.S.); (C.C.); (A.D.R.)
- Correspondence: ; Tel.: +39-0332-299-309
| | - Andrea Braga
- Department of Obstetrics and Gynecology, EOC—Beata Vergine Hospital, 6850 Mendrisio, Switzerland;
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, 6900 Lugano, Switzerland
| | - Stefano Salvatore
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Hospital, Vita-Salute University, 20132 Milano, Italy; (S.S.); (M.C.); (A.F.R.)
| | - Marco Torella
- Department of Obstetrics and Gynecology, Second Faculty, 80129 Naples, Italy;
| | - Maria Carmela Di Dedda
- Department of Obstetrics and Gynecology, ASST FBF-SACCO Macedonio Melloni Hospital, 20129 Milano, Italy;
| | - Chiara Scancarello
- Department of Obstetrics and Gynecology, Del Ponte Hospital, University of Insubria, 21100 Varese, Italy; (C.S.); (C.C.); (A.D.R.)
| | - Chiara Cimmino
- Department of Obstetrics and Gynecology, Del Ponte Hospital, University of Insubria, 21100 Varese, Italy; (C.S.); (C.C.); (A.D.R.)
| | - Andrea De Rosa
- Department of Obstetrics and Gynecology, Del Ponte Hospital, University of Insubria, 21100 Varese, Italy; (C.S.); (C.C.); (A.D.R.)
| | | | - Massimo Candiani
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Hospital, Vita-Salute University, 20132 Milano, Italy; (S.S.); (M.C.); (A.F.R.)
| | - Alessandro Ferdinando Ruffolo
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Hospital, Vita-Salute University, 20132 Milano, Italy; (S.S.); (M.C.); (A.F.R.)
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Patel S, Lazarowicz H, Hamm R. Long-term complications of bulking agents in the treatment of stress urinary incontinence: Results of a national survey. JOURNAL OF CLINICAL UROLOGY 2022. [DOI: 10.1177/20514158221086405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction and Objectives: Bulking agents have been used for decades as an alternative treatment for patients with stress urinary incontinence who are not appropriate for surgery. Despite this their long-term complications are poorly documented and can be misdiagnosed. This paper presents a literature review and the results of a national survey of members of the Section of Female, Neurological and Urodynamic Urology (FNUU) of the British Association of Urological Surgeons (BAUS) identifying the common long-term complications of widely used bulking agents in clinical practice. Methods: Following a comprehensive literature review an electronic survey was sent to members of the BAUS Section of FNUU. Data included hospital trust, use of urethral bulking agents (including type), the approximate number of procedures performed and whether any long-term complications had been observed and managed in their practice. Long-term complications were defined as those arising more than 12 months after treatment. Results: The literature review revealed multiple case reports of complications secondary to bulking agent injection but no high-level evidence regarding frequency or severity. The survey revealed complications including granulomas, erosions, abscesses and misdiagnoses of urethral diverticula and calculi formation. 88% of urologists who responded to the survey had performed a urethral bulking agent injection and 51% of urologists had observed or treated a long-term complication, some many decades after injection. Conclusion: Patients should be made aware of possible long-term complications of what appears to be a minimally invasive procedure in order for them to make an informed choice about treatment options. Level of evidence: Not applicable
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Affiliation(s)
- Sana Patel
- School of Medicine, University of Liverpool, UK
| | - Henry Lazarowicz
- Gow Gibbon Department of Urology, Broadgreen Hospital, Liverpool University Hospitals Foundation Trust, UK
| | - Rebecca Hamm
- School of Medicine, University of Liverpool, UK
- Gow Gibbon Department of Urology, Broadgreen Hospital, Liverpool University Hospitals Foundation Trust, UK
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Alastra G, Aloe L, Baldassarro VA, Calzà L, Cescatti M, Duskey JT, Focarete ML, Giacomini D, Giardino L, Giraldi V, Lorenzini L, Moretti M, Parmeggiani I, Sannia M, Tosi G. Nerve Growth Factor Biodelivery: A Limiting Step in Moving Toward Extensive Clinical Application? Front Neurosci 2021; 15:695592. [PMID: 34335170 PMCID: PMC8319677 DOI: 10.3389/fnins.2021.695592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022] Open
Abstract
Nerve growth factor (NGF) was the first-discovered member of the neurotrophin family, a class of bioactive molecules which exerts powerful biological effects on the CNS and other peripheral tissues, not only during development, but also during adulthood. While these molecules have long been regarded as potential drugs to combat acute and chronic neurodegenerative processes, as evidenced by the extensive data on their neuroprotective properties, their clinical application has been hindered by their unexpected side effects, as well as by difficulties in defining appropriate dosing and administration strategies. This paper reviews aspects related to the endogenous production of NGF in healthy and pathological conditions, along with conventional and biomaterial-assisted delivery strategies, in an attempt to clarify the impediments to the clinical application of this powerful molecule.
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Affiliation(s)
- Giuseppe Alastra
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | | | - Vito Antonio Baldassarro
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | - Laura Calzà
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- IRET Foundation, Bologna, Italy
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | | | - Jason Thomas Duskey
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Letizia Focarete
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Daria Giacomini
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Luciana Giardino
- IRET Foundation, Bologna, Italy
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Valentina Giraldi
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Luca Lorenzini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | | | - Irene Parmeggiani
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Michele Sannia
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | - Giovanni Tosi
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Hoe V, Haller B, Yao HH, O'Connell HE. Urethral bulking agents for the treatment of stress urinary incontinence in women: A systematic review. Neurourol Urodyn 2021; 40:1349-1388. [PMID: 34015151 DOI: 10.1002/nau.24696] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/19/2021] [Accepted: 04/22/2021] [Indexed: 11/10/2022]
Abstract
AIMS To perform a systematic review to assess and compare the efficacy and safety of all urethral bulking agents (UBAs) available for the treatment of stress urinary incontinence (SUI) in women. METHODS This systematic review was conducted in accordance with the PRISMA guideline. A systematic search was conducted using the Ovid Medline, Embase and PubMed databases. Studies were included if they involved women who underwent either Bulkamid®, Macroplastique®, Durasphere®, Coaptite®, or Urolastic® injections for the treatment of SUI. A total of 583 articles were screened with 56 articles included. A qualitative analysis was performed. RESULTS The newer synthetic UBAs are not inferior to Contigen®, with variable mean success rates of 30%-80% in the short-term. Better long-term success rates were found with Bulkamid® (42%-70%), Coaptite® (60%-75%), and Macroplastique® (21%-80%) on qualitative review. Urinary tract infection rates were similar between bulking agents (4%-10.6%) although temporary acute urinary retention was more commonly associated with Coaptite® (mean: 34.2%), and de novo urgency in Durasphere® (mean: 24.7%). Significant complications such as migration into lymph nodes was reported with Durasphere®. Erosion was reported with Macroplastique®, Coaptite®, and Urolastic®, with a rate as high as 24.6% in one study of Urolastic®. CONCLUSION Available data support the use of Bulkamid® and Macroplastique®, which has shown a short-term efficacy of 30%-90% and 40%-85% respectively, and long-term efficacy of 42%-70%, and 21%-80%, respectively. Bulkamid® appears to have a more favorable safety profile, with no cases of erosion or migration of product associated with its use. Direct comparisons of UBAs have not been performed.
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Affiliation(s)
- Venetia Hoe
- Department of Urology, Western Health, St Albans, Victoria, Australia.,Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia
| | - Britt Haller
- Department of Urology, Western Health, St Albans, Victoria, Australia.,Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia
| | - Henry H Yao
- Department of Urology, Western Health, St Albans, Victoria, Australia.,Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia
| | - Helen E O'Connell
- Department of Urology, Western Health, St Albans, Victoria, Australia.,Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia
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Casteleijn FM, Kowalik CR, Berends C, Blaganje M, Lasić Pecev M, van der Linden E, Zwolsman SE, Roovers JPWR, Minnee P. Patients' satisfaction and safety of bulk injection therapy Urolastic for treatment of stress urinary incontinence: A cross-sectional study. Neurourol Urodyn 2020; 39:1753-1763. [PMID: 32526063 PMCID: PMC7497040 DOI: 10.1002/nau.24417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/24/2020] [Indexed: 11/28/2022]
Abstract
Aims Primary outcome was to evaluate patients' satisfaction after being treated with bulk injection therapy polydimethylsiloxane Urolastic (PDMS‐U) for stress urinary incontinence (SUI). Secondary outcomes were: subjective cure, objective cure, severity of SUI symptoms, complications, reintervention rate, and disease‐specific quality of life. Furthermore, to determine if outcomes worsened during time‐after‐treatment (time‐frames: 0‐12, 13‐24, and ≥25 months). Methods In a cross‐sectional design, patients treated with PDMS‐U were recruited for hospital revisit. The primary outcome, patients' satisfaction, was assessed by the surgical satisfaction questionnaire. Subjective cure, objective cure, and severity of symptoms were assessed by the patients global impression of improvement, standardized cough stress test, and Sandvik severity scale, respectively. Medical charts and face‐to‐face interviews were used to determine complications and reinterventions. Results About 110 patients participated, 87 revisited the hospital. Median follow‐up was 25 months (interquartile range: 14;35 months). Patients' satisfaction rate was 51%. Subjective and objective cure were respectively 46% and 47%. Most prevalent complications were: urinary retention (22%), pain (15%), and dyspareunia (15%). Exposure and erosion occurred in 7% and 5%, respectively. Reintervention rate of reinjection and excision of bulk material was 6% and 18.0%, respectively. Objective cure significantly worsened during time‐after‐treatment (P = < .05). Conclusions About half of the patients being treated with PDMS‐U were satisfied and subjectively cured 2 years after treatment, although the majority still experienced symptoms of SUI. Most complications were mild and transient, however, in 18% excision of bulk material was indicated for severe or persistent complications such as pain, exposure, or erosion.
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Affiliation(s)
- Fenne M Casteleijn
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Claudia R Kowalik
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Claudia Berends
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mija Blaganje
- Department of Obstetrics and Gynecology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Mateja Lasić Pecev
- Department of Obstetrics and Gynecology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | | | - Sandra E Zwolsman
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jan-Paul W R Roovers
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Pieter Minnee
- Department of Urology, Langeland Hospital, Zoetermeer, The Netherlands
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Casteleijn FM, Enklaar RA, El Bouyahyaoui I, Jeffery S, Zwolsman SE, Roovers JPWR. How cure rates drive patients' preference for urethral bulking agent or mid-urethral sling surgery as therapy for stress urinary incontinence. Neurourol Urodyn 2019; 38:1384-1391. [PMID: 30989703 DOI: 10.1002/nau.23997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/15/2019] [Accepted: 03/19/2019] [Indexed: 11/07/2022]
Abstract
AIMS To assess the patients' median-accepted threshold of cure rate for urethral bulking agent (UBA) treatment compared to mid-urethral sling (MUS) surgery for treatment of female stress urinary incontinence (SUI). Secondly, to determine the correlation between treatment trade-off point and patient characteristics. METHODS Women older than 18 years, with predominant SUI, seeking treatment, underwent a structured interview. The treatment trade-off point was determined in scenario one: UBA vs transobturator standard MUS surgery (SMUS) performed under general/spinal anesthesia with one-night hospital stay, and scenario 2: UBA compared to single-incision MUS surgery (SIMS) performed under local analgesia (with sedation) in a daycare setting. The treatment trade-off point was assessed by decreasing the cure rate of UBA from 85% to 10% with steps of 2% until the patient's treatment preference switched to SMUS/SIMS. RESULTS One hundred and five patients were interviewed. Mean age was 52 years (SD, ±13.4). The median trade-off point for scenarios 1 and 2 was 79% (interquartile range [IQR]: 69, 85) and 85% (IQR: 71, 85), respectively. Patients with longer duration of SUI symptoms were willing to trade more efficacy to prefer UBA treatment. CONCLUSIONS Patients with SUI are willing to trade a lower cure rate to prefer UBA over SMUS to avoid hospitalization and general anesthesia. When SIMS is performed in a daycare setting under local analgesia, the majority of patients with SUI are of the opinion that cure rates of UBA should be at least as high as SIMS to be worth considering. The treatment preference is not strongly correlated with the patients' characteristics.
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Affiliation(s)
- Fenne M Casteleijn
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Rosa A Enklaar
- Department of Obstetrics and Gynecology, Zuyderland Medical Center, Heerlen, The Netherlands
| | - Ikram El Bouyahyaoui
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Stephen Jeffery
- Department of Obstetrics and Gynecology, University of Cape Town, Cape Town, South Africa
| | - Sandra E Zwolsman
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jan-Paul W R Roovers
- Department of Obstetrics and Gynecology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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Vardar E, Vythilingam G, Pinnagoda K, Engelhardt EM, Zambelli PY, Hubbell JA, Lutolf MP, Frey P, Larsson HM. A bioactive injectable bulking material; a potential therapeutic approach for stress urinary incontinence. Biomaterials 2019; 206:41-48. [PMID: 30925287 DOI: 10.1016/j.biomaterials.2019.03.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 03/19/2019] [Indexed: 12/17/2022]
Abstract
Stress urinary incontinence (SUI) is a life changing condition, affecting 20 million women worldwide. In this study, we developed a bioactive, injectable bulking agent that consists of Permacol™ (Medtronic, Switzerland) and recombinant insulin like growth factor-1 conjugated fibrin micro-beads (fib_rIGF-1) for its bulk stability and capacity to induce muscle regeneration. Therefore, Permacol™ formulations were injected in the submucosal space of rabbit bladders. The ability of a bulking material to form a stable and muscle-inducing bulk represents for us a promising therapeutic approach to achieve a long-lasting treatment for SUI. The fib_rIGF-1 showed no adverse effect on human smooth muscle cell metabolic activity and viability in vitro based on AlamarBlue assays and Live/Dead staining. Three months after injection of fib_rIGF-1 together with Permacol™ into the rabbit bladder wall, we observed a smooth muscle tissue like formation within the injected materials. Positive staining for alpha smooth muscle actin, calponin, and caldesmon demonstrated a contractile phenotype of the newly formed smooth muscle tissue. Moreover, the fib_rIGF-1 treated group also improved the neovascularization at the injection site, confirmed by CD31 positive staining compared to bulks made of PermacolTM only. The results of this study encourage us to further develop this injectable, bioactive bulking material towards a future therapeutic approach for a minimal invasive and long-lasting treatment of SUI.
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Affiliation(s)
- E Vardar
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - G Vythilingam
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Department of Surgery, University of Malaya, Kuala Lumpur, Malaysia
| | - K Pinnagoda
- Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - E M Engelhardt
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - P Y Zambelli
- Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - J A Hubbell
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - M P Lutolf
- Laboratory of Stem Cell Bioengineering, Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - P Frey
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - H M Larsson
- Experimental Pediatric Urology, Laboratory for Regenerative Medicine and Pharmacobiology, Institute for Bioengineering, School of Life Sciences and School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland; Laboratory of Stem Cell Bioengineering, Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland.
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10
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Hussain SM, Bray R. Urethral bulking agents for female stress urinary incontinence. Neurourol Urodyn 2019; 38:887-892. [DOI: 10.1002/nau.23924] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 12/10/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Sadiya M. Hussain
- Department of UrogynaecologyKingston HospitalKingston upon ThamesLondon
| | - Rhiannon Bray
- Department of UrogynaecologyKingston HospitalKingston upon ThamesLondon
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A double-blind, randomized, placebo-controlled clinical trial evaluating the safety and efficacy of autologous muscle derived cells in female subjects with stress urinary incontinence. Int Urol Nephrol 2018; 50:2153-2165. [PMID: 30324580 DOI: 10.1007/s11255-018-2005-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 10/04/2018] [Indexed: 12/31/2022]
Abstract
PURPOSE The purpose of the study was to assess safety and efficacy of autologous muscle derived cells for urinary sphincter repair (AMDC-USR) in female subjects with predominant stress urinary incontinence. METHODS A randomized, double-blind, multicenter trial examined intra-sphincteric injection of 150 × 106 AMDC-USR versus placebo in female subjects with stress or stress predominant, mixed urinary incontinence. AMDC-USR products were generated from vastus lateralis needle biopsies. Subjects were randomized 2:1 to receive AMDC-USR or placebo and 1:1 to receive 1 or 2 treatments (6 months after the first). Primary outcome was composite of ≥ 50% reduction in stress incontinence episode frequency (IEF), 24-h or in-office pad weight tests at 12 months. Other outcome data included validated subject-recorded questionnaires. Subjects randomized to placebo could elect to receive open-label AMDC-USR treatment after 12 months. Subject follow-up was up to 2 years. RESULTS AMDC-USR was safe and well-tolerated with no product-related serious adverse events or discontinuations due to adverse events. Interim analysis revealed an unexpectedly high placebo response rate (90%) using the composite primary outcome which prevented assessment of treatment effect as designed and thus enrollment was halted at 61% of planned subjects. Post hoc analyses suggested that more stringent endpoints lowered placebo response rates and revealed a possible treatment effect. CONCLUSIONS Although the primary efficacy finding was inconclusive, these results inform future trial design of AMDC-USR to identify clinically meaningful efficacy endpoints based on IEF reduction, understanding of placebo response rate, and refinement of subject selection criteria to more appropriately align with AMDC-USR's proposed mechanism of action.
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Casteleijn FM, Zwolsman SE, Kowalik CR, Roovers JPPWR. Patients' perspectives on urethral bulk injection therapy and mid-urethral sling surgery for stress urinary incontinence. Int Urogynecol J 2018; 29:1249-1257. [PMID: 29675556 PMCID: PMC6132683 DOI: 10.1007/s00192-018-3644-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/23/2018] [Indexed: 12/26/2022]
Abstract
INTRODUCTION AND HYPOTHESIS The aim of this study was to identify all treatment decision factors that determined the preference for peri-urethral bulk injection therapy (PBI) or mid-urethral sling (MUS) surgery in patients with primary stress urinary incontinence (SUI). Second, we explored what patients expect from treatment for SUI and whether patients would consider PBI as a primary treatment option. METHODS In a qualitative design, 20 semi-structured, face-to-face interviews were conducted in women with primary SUI. Exclusion criteria were: previous PBI or MUS surgery; predominating urgency. Interviews were guided by three open-ended questions and a topic list. PBI treatment and MUS surgery were described in detail, and the efficacy was stated as 70% and 90%, respectively. Data saturation was reached when no new treatment decision factors were identified in three consecutive interviews. Interviews were audiotaped and fully transcribed. Thematic analysis by a coding process was done independently by two researchers. RESULTS Sixteen procedural, personal, professional, social and external treatment decision factors were identified. Regarding expectations about treatment for SUI, women believed 'becoming dry' was wishful thinking. The majority of patients accepted a small degree of persistent urinary incontinence after treatment. Regardless of their treatment preference, patients indicated that women should be informed about PBI as a primary treatment option. CONCLUSION Patients with primary SUI are open to PBI as an alternative treatment option even with lower cure rates compared with MUS surgery performed under general or spinal anesthesia. Patients indicated that women with primary SUI seeking treatment should be informed about PBI as a treatment option.
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Affiliation(s)
- Fenne M Casteleijn
- Department of Obstetrics and Gynecology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
| | - Sandra E Zwolsman
- Department of Obstetrics and Gynecology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Claudia R Kowalik
- Department of Obstetrics and Gynecology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Jan-Paul P W R Roovers
- Department of Obstetrics and Gynecology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
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Maia GTDS, Albuquerque AVD, Martins Filho ED, Lira Neto FTD, Souza VSBD, Silva AAD, Lira MMDM, Lima SVC. Bacterial cellulose to reinforce urethrovesical anastomosis. A translational study. Acta Cir Bras 2018; 33:673-683. [DOI: 10.1590/s0102-865020180080000003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 07/04/2018] [Indexed: 12/12/2022] Open
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Bulking Agents in the Management of Urinary Incontinence: Dead or Alive? CURRENT BLADDER DYSFUNCTION REPORTS 2017. [DOI: 10.1007/s11884-017-0439-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kowalik CR, Casteleijn FM, van Eijndhoven HWF, Zwolsman SE, Roovers JPWR. Results of an innovative bulking agent in patients with stress urinary incontinence who are not optimal candidates for mid-urethral sling surgery. Neurourol Urodyn 2017; 37:339-345. [PMID: 28452427 DOI: 10.1002/nau.23299] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/23/2017] [Indexed: 12/31/2022]
Abstract
AIMS To assess the efficacy and safety of peri-urethral bulking injections (PBI) with an innovative bulking material (PDMS-U) in women with stress-urinary incontinence (SUI) who are not optimal candidates for mid-urethral sling surgery. METHODS A prospective study was performed in women with SUI who, for several reasons, have a relative contraindication for a mid-urethral sling procedure. These reasons include: (i) recurrent SUI after a prior SUI surgical procedure; (ii) a history of oncologic gynaecological surgery; (iii) a history of neurologic disease resulting in voiding problems; (iv) a maximal flow rate of less than 15 mL per second or; (v) women with a contraindication for surgery with general or regional anaesthesia. All women were treated with PBI consisting of PDMS-U, a bulking agent that polymerizes in situ. The primary outcome was subjective improvement, defined as "a little better" to "very much better" on the PGI-I. Secondary outcomes included objective cure, disease specific quality of life and adverse events. RESULTS Subjective improvement was reported by 18 (90%) of the 20 included patients. The subjective cure rate was 56% and the objective cure rate was 65%. There was a statistically significant improvement of all domain scores of the UDI-6, IIQ-7, and PISQ-12 at 6 months follow up. Abnormal post voiding residual volume (>150 mL) was the most common adverse event (40%), but persisted in only one patient, based on the patient's preference for a catheter. CONCLUSIONS PBI with PDMS-U is a viable treatment option in women with a relative contra-indication for mid-urethral sling surgery.
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Affiliation(s)
- Claudia R Kowalik
- Department of Obstetrics and Gynaecology, Academic Medical Center, Amsterdam, The Netherlands
| | - Fenne M Casteleijn
- Department of Obstetrics and Gynaecology, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Sandra E Zwolsman
- Department of Obstetrics and Gynaecology, Academic Medical Center, Amsterdam, The Netherlands
| | - Jan-Paul W R Roovers
- Department of Obstetrics and Gynaecology, Academic Medical Center, Amsterdam, The Netherlands
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Treatment of Stress Urinary Incontinence in Neurological Patients With an Injectable Elastomer Prosthesis: Preliminary Results. Int Neurourol J 2017; 21:75-79. [PMID: 28361514 PMCID: PMC5380820 DOI: 10.5213/inj.1732644.322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/19/2016] [Indexed: 11/08/2022] Open
Abstract
Many treatment options for stress urinary incontinence are difficult to apply to neurological patients. Urolastic is a new agent that is primarily indicated for women with mild stress urinary incontinence or men after prostate surgery. In this report, we present a series of 5 cases describing the first use of Urolastic to treat neurological patients. All patients were evaluated with a voiding diary and the use of auxiliary devices as the main indicators of continence. The median operative time was 30.8 minutes, and no complications were observed. Of the 5 patients, 4 reported improved incontinence: 2 switched from diapers to small pads, while the other 2 patients were able to discontinue urinary condom use. The only instance of treatment failure occurred in a patient with a low-compliance bladder. The advantages of this procedure appear to include a soft-cuff effect, reversibility, and minimal invasiveness. However, a future randomized study would be necessary to validate this treatment option.
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de Vries AM, van Breda HMK, Fernandes JG, Venema PL, Heesakkers JPFA. Para-Urethral Injections with Urolastic® for Treatment of Female Stress Urinary Incontinence: Subjective Improvement and Safety. Urol Int 2017; 99:91-97. [PMID: 28152525 DOI: 10.1159/000452450] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/11/2016] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Female stress urinary incontinence (SUI) is often treated surgically. Urethral bulking agents are a minimally invasive alternative, especially in patients suffering from intrinsic sphincter deficiency, but often with limited long-term efficacy. Urolastic® is a non-deformable, non-resorbable silicone elastomer that is used as an injectable. Its properties might result in a more durable response after injection. If this durability factor can be combined with a low complication rate, this can become a useful treatment option. We therefore assessed the subjective improvement and safety after treatment with Urolastic®. MATERIALS AND METHODS In 2 Dutch hospitals, 65 patients were treated with Urolastic®. The subjective improvement was assessed and the medical charts were reviewed for complications that appeared during the follow-up period. The complications were classified using the Clavien-Dindo classification. RESULTS We found that 76-88% of the patients showed subjective improvement at 12-25 months follow-up. The rate of improvement experienced was 50-70%. The rate of complications classified as Clavien-Dindo >II was 24-33%. The 12 patients with 75-100% subjective improvement after 2 months, showed 85% improvement after a median of 25 months. CONCLUSIONS With careful patient selection, Urolastic® seems to be a safe, durable and effective treatment option for female SUI.
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Affiliation(s)
- Allert M de Vries
- Department of Urology, Radboud University Medical Centre, Nijmegen, The Netherlands
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Nonabsorbable urethral bulking agent — clinical effectiveness and late complications rates in the treatment of recurrent stress urinary incontinence after 2 years of follow-up. Eur J Obstet Gynecol Reprod Biol 2016; 207:68-72. [DOI: 10.1016/j.ejogrb.2016.10.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 09/08/2016] [Accepted: 10/18/2016] [Indexed: 11/20/2022]
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Translational approaches to the treatment of benign urologic conditions in elderly women. Curr Opin Urol 2016; 26:184-92. [PMID: 26814884 DOI: 10.1097/mou.0000000000000261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Stress urinary incontinence, overactive bladder, interstitial cystitis/painful bladder syndrome, and underactive bladder are highly prevalent among elderly women, and have significant impact on quality of life; however, existing treatments are limited and are not always successful for all patients. Researchers are investigating a multitude of new therapies to treat these conditions. This review will summarize the recent literature on investigative therapies for these conditions. RECENT FINDINGS Multiple new treatments are being developed for lower urinary tract dysfunction. Some of these treatments, including balloon therapy and muscle-derived stem cells for stress urinary incontinence, could provide alternatives to existing therapies. Others require further research before being used in patients, such as pudendal nerve stimulation for overactive bladder and intravesical liposomes for drug delivery in interstitial cystitis/painful bladder syndrome. SUMMARY Multiple new therapies are being investigated that could provide clinicians with additional tools to treat lower urinary tract disorders in millions of elderly women.
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Zajda J, Farag F. Urolastic for the treatment of women with stress urinary incontinence: 24-month follow-up. Cent European J Urol 2015; 68:334-8. [PMID: 26568877 PMCID: PMC4643696 DOI: 10.5173/ceju.2015.541] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 04/26/2015] [Accepted: 06/23/2015] [Indexed: 11/22/2022] Open
Abstract
Introduction To evaluate the efficacy and durability of Urolastic, a new urethral bulking agent in women with stress urinary incontinence (SUI), after a follow-up of 24-months. Material and methods A follow-up study of women with SUI who received a Urolastic injection and successfully passed the 12-month follow-up. Assessment included the Stamey Grade, 1-h Pad weight test, and the International quality of life (I-QoL) score. Results Nineteen women who completed the 12-month follow-up were invited for the 24-month follow-up study. One patient did not respond to the correspondence. Four of the 18 patients who responded to the correspondence reported removal of the Urolastic implant at another facility, based on their desire. The explanation for this removal was painful intercourse (n = 1) or less than optimal dryness (n = 3). The overall objective improvement in continence status at 24-months was 66% compared to the 89% at the 12-month follow-up, while in addition the 1-h pad weight test showed >50% reduction in pad weight in 66% of patients compared to 84% at the 12-month follow-up. Adverse events reported were urinary tract infection (n = 1), local genital infection with erosion into the vagina (n = 1), painful intercourse (n = 2), and urgency (n = 4). Conclusions Urolastic is comparable to other bulking agents in terms of durability, efficacy, and complications.
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Affiliation(s)
- Janusz Zajda
- MOCONTI Ltd, Urological Office, Warsaw, Poland ; IATROS NZOZ, Department of Urology Warsaw, Poland ; First two authors equally contributed to the manuscript
| | - Fawzy Farag
- Department of Urology, Hamad Medical Corporation, Doha, Qatar
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An Open Multicenter Study of Clinical Efficacy and Safety of Urolastic, an Injectable Implant for the Treatment of Stress Urinary Incontinence: One-Year Observation. BIOMED RESEARCH INTERNATIONAL 2015; 2015:851823. [PMID: 26106616 PMCID: PMC4461699 DOI: 10.1155/2015/851823] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 09/18/2014] [Accepted: 09/21/2014] [Indexed: 11/29/2022]
Abstract
The prevalence of stress urinary incontinence rises and affects up to 30% of women after 50 years of age. Midurethral slings are currently the mainstay of surgical anti-incontinence therapy. Some patients experience recurrent SUI (RSUI) which is defined as a failure of anti-incontinence surgery after a period of time or persistence of SUI after the procedure aimed at correcting it. The urethral bulking agent application decreases invasiveness of treatment and meets patients requirements. The objective of this study was to assess the safety and clinical efficacy of Urolastic injection. One hundred and five patients with SUI (including 91 patients with RSUI) were treated with Urolastic in three tertiary gynecological clinics. The efficacy of the procedure was assessed objectively at each follow-up visit by means of cough test and a standard 1-hour pad test. Objective success rate after 12 months after primary procedure in RSUI patients was found in 59.3% of patients. In 14 patients with primary SUI improvement after 1 year was found in 71.4% of patients. Although cure rates after MUS are up to 90% there is still place for less invasive treatment option like periurethral injection of bulking agents, especially in patients with previous SUI surgical management.
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