In-vitro cellular and in-vivo investigation of ascorbic acid and β-glycerophosphate loaded gelatin/sodium alginate injectable hydrogels for urinary incontinence treatment

H. Rezaei, A. Asefnejad*, M. Daliri-Joupari, S. Joughehdoust

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Urinary incontinence is one of the most common disorders especially in adult women. In this study, cellular and in-vivo analyses were performed on (3-glycidyloxypropyl) trimethoxysilane (GPTMS) and CaCl2 cross-linked alginate and gelatin hydrogels containing beta-glycerophosphate and ascorbic acid to evaluate the regenerative potential as injectable compression agents for the treatment of urinary incontinence. The hydrogels were prepared with different percentages of components and were named as GA1 (7.2% w/v gelatin, 6% w/v sodium alginate, 0.5:1w/w GPTMS, CaCl2 1% (wt) sodium alginate, 50 mu g/mL ascorbic acid, 1.5 mg/mL beta-glycerophosphate), GA2 (10% w/v gelatin, 8.5% w/v sodium alginate, 0.5:1 w/w GPTMS, CaCl2 1% (wt) sodium alginate, 50 mu g/mL ascorbic acid, 1.5 mg/mL beta-glycerophosphate), and GA3 (10% (w/v) gelatin, 8.5% w/v sodium alginate, 1:1 w/w GPTMS, CaCl2 1% (wt) sodium alginate, 50 mu g/mL ascorbic acid, 1.5 mg/mL beta-glycerophosphate) hydrogels. The results of cell studies showed that although all three samples supported cell adhesion and survival, the cellular behavior of the GA2 sample was better than the other samples. Animal tests were performed on the optimal GA2 sample, which showed that this hydrogel repaired the misfunction tissue in a rat model within 4 weeks and the molecular layer thickness was reached the normal tissue after this duration. It seems that these hydrogels, especially GA2 sample containing 10% (w/v) gelatin, 8.5% (w/v) sodium alginate, 0.5:1 (w/w) GPTMS, CaCl2 1% (wt) sodium alginate, 50 mu g/mL ascorbic acid, and 1.5 mg/mL beta-glycerophosphate, can act as an injetable hydrogel for urinary incontinence treatment without the need for repeating the injection.
Original languageEnglish
Pages (from-to)161-171
Number of pages11
JournalProgress in Biomaterials
Volume10
Issue number2
DOIs
Publication statusPublished - 1 Jun 2021

Keywords

  • Sodium alginate
  • Gelatin
  • Injectable hydrogels
  • GPTMS
  • Urinary incontinence
  • URETHRAL BULKING AGENT
  • DEXAMETHASONE
  • CHITOSAN
  • RELEASE

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