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Luo Y, Fu M, Zhou Z, Zhang X, Guo Q, Wang Y, Zhang W, Wang Y, Chen Z, Wu T. A tilapia skin-derived gelatin hydrogel combined with the adipose-derived stromal vascular fraction for full-thickness wound healing. NANOSCALE ADVANCES 2024; 6:4230-4236. [PMID: 39114139 PMCID: PMC11302172 DOI: 10.1039/d4na00332b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 06/18/2024] [Indexed: 08/10/2024]
Abstract
Biomaterials are widely used in regenerative medicine to repair full-thickness skin defect wounds. The adipose-derived stromal vascular fraction (SVF) shows pro-regenerative properties, however, the ex vivo biological activity of SVF is suppressed due to the lack of an external scaffold. Tilapia skin, as a sustained and recyclable biomaterial with low immunogenicity, was applied in the preparation of a hydrogel. The mixture of tilapia skin-derived gelatin and methacrylic anhydride as a scaffold facilitated the paracrine function of SVF and exerted a synergistic effect with SVF to promote wound healing. In this study, 30% (w/v) SVF was added to methacrylate-functionalized tilapia skin gelatin and subsequently exposed to UV irradiation to form a three-dimensional nano-scaffolding composite hydrogel (FG-SVF-3). The effects of paracrine growth factors, neovascularization, and collagen production on wound healing were extensively discussed. FG-SVF-3 displayed a pronounced wound healing ability via in vivo wound models. The FG-SVF-3 hydrogel enhanced the biocompatibility and the expression of EGF, bFGF, and VEGF. FG-SVF-3, as a promising wound dressing, exhibited superior ability to accelerate wound healing, skin regeneration, and wound closure.
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Affiliation(s)
- Yanan Luo
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
- Department of Cosmetic and Plastic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Manfei Fu
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Ziyi Zhou
- Department of Plastic, Reconstructive and Cosmetic Surgery, Xinqiao Hospital, Army Medical University Chongqing 400037 China
| | - Xiaopei Zhang
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
- Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University Qingdao 266071 China
| | - Qingxia Guo
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University Qingdao 266071 China
| | - Yawen Wang
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
- Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University Qingdao 266071 China
| | - Weina Zhang
- Department of Cosmetic and Plastic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Yuanfei Wang
- Qingdao Stomatological Hospital Affiliated to Qingdao University Qingdao 266001 China
| | - Zhenyu Chen
- Department of Cosmetic and Plastic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Tong Wu
- Medical Research Center, The Affiliated Hospital of Qingdao University Qingdao 266000 China
- Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University Qingdao 266071 China
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Fossum M, Kaefer M, Bagli D, Harper L, Herbst KW, Nelson CP, Braga LH, Nieuwhof-Leppink A, Kalfa N, Garriboli M, Cascio S. The importance of animal specificity in animal experimentation, part I: Anatomy in relation to pediatric urology. J Pediatr Urol 2024; 20:312-314. [PMID: 38199905 DOI: 10.1016/j.jpurol.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Abstract
Why and when is animal experimentation relevant? The answer to this question depends on the research question. In this short educational article we aim to raise awareness of the importance of formulating a very specific research question before choosing an animal species. An awareness of anatomical and physiological differences vis-a-vis similarities between species, will increase the potential for obtaining data that is relevant for translation to human conditions.
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Affiliation(s)
- Magdalena Fossum
- Department of Pediatric Surgery, Center of Cancer and Organ Diseases, Rigshospitalet, Copenhagen University, Copenhagen, Denmark; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
| | - Martin Kaefer
- Riley Hospital for Children, Indiana University, Indianapolis, IN, United States
| | - Darius Bagli
- Division of Urology, Departments of Surgery and Physiology, University of Toronto, Developmental and Stem Cell Biology, The Hospital for Sick Children and Research Institute, Toronto, Ontario, Canada
| | - Luke Harper
- Service de Chirurgie Pédiatrique, Hôpital Pellegrin-Enfants, CHU de Bordeaux, France
| | - Katherine W Herbst
- Division of Urology, Research Institute, Connecticut Children's Medical Center, Hartford, CT, United States
| | - Caleb P Nelson
- Department of Urology, Boston Children's Hospital and Harvard Medical School, MA, United States
| | - Luis H Braga
- Department of Surgery, Division of Urology, McMaster University, McMaster Children's Hospital, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
| | - Anka Nieuwhof-Leppink
- Department Urotherapy, Wilhelmina Children's Hospital, Part of University Medical Center Utrecht, Netherlands
| | - Nicolas Kalfa
- Department of Pediatric Surgery and Urology, Lapeyronie Hospital, CHU Montpellier, France; UMR1302 Institute Desbrest of Epidemiology and Public Health, INSERM, University Montpellier, Montpellier, France
| | - Massimo Garriboli
- Department of Paediatric Urology, Evelina London Children's Hospital, Westminster Bridge Road, London, SE1 7EH, United Kingdom
| | - Salvatore Cascio
- Department of Pediatric Surgery, School of Medicine, University College Dublin and Children's Health Ireland at Temple Street, Dublin, Ireland
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Gudde AN, van Velthoven MJJ, Kouwer PHJ, Roovers JPWR, Guler Z. Injectable polyisocyanide hydrogel as healing supplement for connective tissue regeneration in an abdominal wound model. Biomaterials 2023; 302:122337. [PMID: 37793268 DOI: 10.1016/j.biomaterials.2023.122337] [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: 06/28/2023] [Revised: 09/07/2023] [Accepted: 09/23/2023] [Indexed: 10/06/2023]
Abstract
In pelvic organ prolapse (POP) patients, the uterus, bladder and/or rectum descends into vagina due to weakened support tissues. High recurrence rates after POP surgery suggest an urgent need for improved surgical outcomes. Our aim is to promote connective tissue healing that results in stimulated tissue support functions by surgically applying a hydrogel functionalized with biological cues. We used known vaginal wound healing promoting factors (basic fibroblast growth factor, β-estradiol, adipose-derived stem cells) in the biomimetic and injectable polyisocyanide (PIC) hydrogel, which in itself induces regenerative vaginal fibroblast behavior. The regenerative capacity of injected PIC hydrogel, and the additional pro-regenerative effects of these bioactive factors was evaluated in abdominal wounds in rabbits. Assessment of connective tissue healing (tensile testing, histology, immunohistochemistry) revealed that injection with all PIC formulations resulted in a statistically significant stiffness and collagen increase over time, in contrast to sham. Histological evaluation indicated new tissue growth with moderate to mild immune activity at the hydrogel - tissue interface. The results suggest that PIC injection in an abdominal wound improves healing towards regaining load-bearing capacity, which encourages us to investigate application of the hydrogel in a more translational vaginal model for POP surgery in sheep.
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Affiliation(s)
- Aksel N Gudde
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands; Amsterdam Reproduction and Development, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands
| | - Melissa J J van Velthoven
- Department of Urology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 28, 6525 GA, Nijmegen, the Netherlands; Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands
| | - Paul H J Kouwer
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands
| | - Jan-Paul W R Roovers
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands; Amsterdam Reproduction and Development, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands
| | - Zeliha Guler
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands; Amsterdam Reproduction and Development, Amsterdam University Medical Center-location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands.
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