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Published in: International Urogynecology Journal 8/2022

06-11-2021 | Stress Incontinence | Original Article

Evaluating tissue-engineered repair material for pelvic floor dysfunction: a comparison of in vivo response to meshes implanted in rats

Authors: Xiaojuan Wang, Yisong Chen, Zhongyong Fan, Keqin Hua

Published in: International Urogynecology Journal | Issue 8/2022

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Abstract

Introduction and hypothesis

Achieving better anatomic restoration and decreasing the associated complications are necessary for material repair of pelvic floor dysfunction (PFD). This study was aimed to investigate host response to tissue-engineered repair material (TERM) in rat models by comparing different materials and study the changes in biomechanical properties over time.

Methods

TERM was constructed by seeding adipose-derived stem cells (ADSCs) on electrospun poly(L-lactide)-trimethylene carbonate-glycolide (PLTG) terpolymers. The TERM, PLTG, porcine small intestine submucosa mesh (SIS), and polypropylene (PP) (n = 6 / group per time point) were implanted in rats for 7, 30, 60, and 90 days. Hematoxylin-eosin and Masson’s trichrome staining were used to assess the host response, and mechanical testing was used to evaluate the changes in biomechanical properties.

Results

In vivo imaging showed that the ADSCs were confined to the abdominal wall and did not migrate to other organs or tissues. The TERM was encapsulated by a thicker layer of connective tissue and was associated with less reduced inflammatory scores compared with PLTG and PP over time. The vascularization of the TERM was greater than that with PP and PLTG over time (p < 0.05) and was greater than that with SIS on day 90. The ultimate tensile strain and Young’s modulus of the PP group showed the greatest increases, and the TERM group followed on day 90.

Conclusions

This TERM achieved better host integration in rat models and better biomechanical properties, and it may be an alternative material for PFD.
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Metadata
Title
Evaluating tissue-engineered repair material for pelvic floor dysfunction: a comparison of in vivo response to meshes implanted in rats
Authors
Xiaojuan Wang
Yisong Chen
Zhongyong Fan
Keqin Hua
Publication date
06-11-2021
Publisher
Springer International Publishing
Published in
International Urogynecology Journal / Issue 8/2022
Print ISSN: 0937-3462
Electronic ISSN: 1433-3023
DOI
https://doi.org/10.1007/s00192-021-05008-1

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