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Wu Q, Wang N, He T, Shang J, Li L, Song L, Yang X, Li X, Luo N, Zhang W, Gong C. Thermosensitive hydrogel containing dexamethasone micelles for preventing postsurgical adhesion in a repeated-injury model. Sci Rep 2015; 5:13553. [PMID: 26324090 PMCID: PMC4555101 DOI: 10.1038/srep13553] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 07/30/2015] [Indexed: 02/05/2023] Open
Abstract
Tissue adhesion is a common complication after surgery. In this work, a dexamethasone loaded polymeric micelles in thermosensitive hydrogel composite (Dex hydrogel) was prepared, which combined the anti-adhesion barrier with controlled release of anti-adhesion drug. Dexamethasone (Dex) was encapsulated in polymeric micelles (Dex micelles), and then the Dex micelles were loaded into biodegradable and thermosensitive hydrogel. The obtained Dex hydrogel showed a temperature-dependent sol-gel-sol phase transition behavior. The Dex hydrogel could form a non-flowing gel in situ upon subcutaneous injection and gradually degrade in about 20 days. In addition, Dex hydrogel was assigned for anti-adhesion studies in a more rigorous recurrent adhesion animal model. Compared with normal saline (NS) and Dex micelles group, tissue adhesions in hydrogel and Dex hydrogel group were significantly alleviated. In Dex hydrogel group, the media adhesion score is 0, which was dramatically lower than that in blank hydrogel group (2.50, P < 0.001). In histopathological examination and scanning electron microscopy (SEM) analysis, an integral neo-mesothelial cell layer with microvilli on their surface was observed, which revealed that the injured parietal and visceral peritoneum were fully recovered without the concerns of adhesion formation. Our results suggested that Dex hydrogel may serve as a potential anti-adhesion candidate.
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Affiliation(s)
- Qinjie Wu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Ning Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Tao He
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Jinfeng Shang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Ling Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Linjiang Song
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Xi Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Xia Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Na Luo
- School of Medicine, Nankai University, Tianjin, 300071, P. R. China
| | - Wenli Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
| | - Changyang Gong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, P. R. China
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Oner G, Ulug P. A systemic review of randomized controlled studies about prevention with pharmacologic agents of adhesion formation in the rat uterine horn model. Arch Med Sci 2015; 11:274-81. [PMID: 25995741 PMCID: PMC4424244 DOI: 10.5114/aoms.2014.47875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/28/2014] [Accepted: 05/09/2014] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Evaluation of treatment attempts in postoperative adhesion formation is pivotal for the prevention of several morbidities including infertility, pelvic pain, bowel obstruction, and subsequent intraoperative complications. The purpose of this systemic review was to assess the literature on the rat uterine horn model for adhesion formation and treatment modalities to prevent adhesion in the most frequently used experimental animal model. MATERIAL AND METHODS We performed a systemic review of publications from January 1(st) 2000 to December 31(st) 2013 via a PubMed search. A high number of agents were evaluated for the prevention of postoperative adhesion formation in the rat uterine horn model. RESULTS According to most of the studies, adjuvants such as antiinflamatuars, antiestrogens, antioxidants were effective to prevent adhesion formation. CONCLUSIONS Prevention of adhesion formation is pivotal and numerous types of agents were described in the literature were summarized in this review.
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Affiliation(s)
- Gokalp Oner
- Department of Obstetric and Gynecology, Mugla Sitki Kocman University, Mugla, Turkey
| | - Pasa Ulug
- Department of Obstetric and Gynecology, Erzincan University, Erzincan, Turkey
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Mıcılı SC, Göker A, Sayın O, Akokay P, Ergür BU. Lipoic acid decreases peritoneal adhesion formation in a rat uterine scar model. J Turk Ger Gynecol Assoc 2013; 14:76-80. [PMID: 24592079 DOI: 10.5152/jtgga.2013.22129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/08/2013] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVE To investigate the effects of lipoic acid in the prevention of postoperative pelvic adhesions by a visual scoring system and immunohistochemistry in a rat uterine horn model with full thickness injury. MATERIAL AND METHODS Twenty-eight female Wistar albino rats were randomised into four groups: uterine trauma control, 15 days and 30 days, and uterine trauma + lipoic acid, 15 days and 30 days. A full thickness defect was established by incising a segment of approximately 1.0 cm in length from each uterine horn, leaving the mesometrium intact. Extension and severity of the adhesions in each group were scored by a visual scoring system and evaluated immunohistochemically. RESULTS Adhesion scores were 2.00±0.81, 2.14±0.69 0.71±0.75, and 0.85±0.69 for extent and 2.28±0.48, 2.14±0.69, 0.85±0.69, and 1.14±0.69 for severity in Groups 1, 2, 3 and 4, respectively. Adhesion extent and severity were significantly less for groups treated by lipoic acid but no difference was observed between long and short administration. Both Vitronectin and u-PAR staining were significantly increased in treatment groups when compared to the control group. CONCLUSION Lipoic acid was found to be effective in reducing postoperative adhesion formation in a rat model.
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Affiliation(s)
- Serap Cilaker Mıcılı
- Department of Histology and Embryology, Dokuz Eylül University Faculty of Medicine, İzmir, Turkey
| | - Aslı Göker
- Department of Obstetrics and Gynecology, Celal Bayar University Faculty of Medicine, Manisa, Turkey
| | - Oya Sayın
- Department of Biochemistry, Dokuz Eylül University Learning Resources Center, İzmir, Turkey
| | - Pınar Akokay
- Department of Histology and Embryology, Dokuz Eylül University Faculty of Medicine, İzmir, Turkey
| | - Bekir Uğur Ergür
- Department of Histology and Embryology, Dokuz Eylül University Faculty of Medicine, İzmir, Turkey
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