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Foster C, Jensen T, Finck C, Rowe CK. Development of a Wound-Healing Protocol for In Vitro Evaluation of Urothelial Cell Growth. Methods Protoc 2023; 6:64. [PMID: 37489431 PMCID: PMC10366823 DOI: 10.3390/mps6040064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/27/2023] [Accepted: 07/01/2023] [Indexed: 07/26/2023] Open
Abstract
Urethral healing is plagued by strictures, impacting quality of life and medical costs. Various growth factors (GFs) have shown promise as therapeutic approaches to improve healing, but there is no protocol for in vitro comparison between GFs. This study focuses the development of a biomimetic in vitro urothelial healing assay designed to mimic early in vivo healing, followed by an evaluation of urothelial cell growth in response to GFs. METHODS Wound-healing assays were developed with human urothelial cells and used to compared six GFs (EGF, FGF-2, IGF-1, PDGF, TGF-β1, and VEGF) at three concentrations (1 ng/mL, 10 ng/mL, and 100 ng/mL) over a 48 h period. A commercial GF-containing medium (EGF, TGF-α, KGF, and Extract P) and a GF-free medium were used as controls. RESULTS There was a statistically significant increase in cell growth for IGF-1 at 10 and 100 ng/mL compared to both controls (p < 0.05). There was a statistically significant increase in cell growth for EGF at all concentrations compared to the GF-free medium control (p < 0.05). CONCLUSION This study shows the development of a clinically relevant wound-healing assay to evaluate urothelial cell growth. It is the first to compare GFs for future use in reconstructive techniques to improve urethral healing.
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Affiliation(s)
- Christopher Foster
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Todd Jensen
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Christine Finck
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06032, USA
- Division of Pediatric General and Thoracic Surgery, Connecticut Children's, Hartford, CT 06108, USA
| | - Courtney K Rowe
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06032, USA
- Division of Pediatric Urology, Connecticut Children's, Hartford, CT 06108, USA
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Grecu AF, Reclaru L, Ardelean LC, Nica O, Ciucă EM, Ciurea ME. Platelet-Rich Fibrin and its Emerging Therapeutic Benefits for Musculoskeletal Injury Treatment. ACTA ACUST UNITED AC 2019; 55:medicina55050141. [PMID: 31096718 PMCID: PMC6572609 DOI: 10.3390/medicina55050141] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/21/2019] [Accepted: 04/23/2019] [Indexed: 12/12/2022]
Abstract
New therapies that accelerate musculoskeletal tissue recovery are highly desirable. Platelet-rich fibrin (PRF) is a leukocyte- and platelet-rich fibrin biomaterial that acts as a binding site for both platelets and growth factors. Through increasing the local concentration of growth factors at specific tissues, PRF promotes tissue regeneration. PRF has been frequently used in combination with bone graft materials to reduce healing times and promote bone regeneration during maxillofacial surgery. However, its benefits during muscle repair and recovery are less well-documented. Here, we perform a narrative review on PRF therapies and muscle injuries to ascertain its beneficial effects. We reviewed the factors that contribute to the biological activity of PRF and the published pre-clinical and clinical evidence to support its emerging use in musculoskeletal therapy. We include in vitro studies, in vivo animal studies and clinical articles highlighting both the success and failures of PRF treatment. PRF can promote the healing process when used in a range of orthopaedic and sports-related injuries. These include cartilage repair, rotator cuff surgery and anterior cruciate ligament surgery. However, conflicting data for these benefits have been reported, most likely due to inconsistencies in both PRF preparation protocols and dosing regimens. Despite this, the literature generally supports the use of PRF as a beneficial adjuvant for a range of chronic muscle, tendon, bone or other soft tissue injuries. Further clinical trials to confirm these benefits require consistency in PRF preparation and the classification of a successful clinical outcome to fully harness its potential.
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Affiliation(s)
- Alexandru Florian Grecu
- PhD Researcher - University of Medicine and Pharmacy Craiova, str. Petru Rares no.2, 200349, Craiova, Romania.
| | - Lucien Reclaru
- Varinor Matériaux SA, 7 St-Georges str, CH 2800, Delémont, Switzerland.
| | - Lavinia Cosmina Ardelean
- "Victor Babes" University of Medicine and Pharmacy from Timisoara, Dept. of Technology of Materials and 9 Devices in Dental Medicine,2 Eftimie Murgu sq, 300041 Timisoara, Romania.
| | - Oliviu Nica
- PhD Researcher - University of Medicine and Pharmacy Craiova, str. Petru Rares no.2, 200349, Craiova, Romania.
| | - Eduard Mihai Ciucă
- Department of Oro-Maxilo-Facial Surgery ⁻ University of Medicine and Pharmacy Craiova, str. Petru Rares, no.2, 200349 Craiova, Romania.
| | - Marius Eugen Ciurea
- Department of Plastic Surgery - University of Medicine and Pharmacy of Craiova, str. Petru Rares, no.2, 200349 Craiova, Romania.
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Miron RJ, Fujioka-Kobayashi M, Bishara M, Zhang Y, Hernandez M, Choukroun J. Platelet-Rich Fibrin and Soft Tissue Wound Healing: A Systematic Review. TISSUE ENGINEERING PART B-REVIEWS 2016; 23:83-99. [PMID: 27672729 DOI: 10.1089/ten.teb.2016.0233] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The growing multidisciplinary field of tissue engineering aims at predictably regenerating, enhancing, or replacing damaged or missing tissues for a variety of conditions caused by trauma, disease, and old age. One area of research that has gained tremendous awareness in recent years is that of platelet-rich fibrin (PRF), which has been utilized across a wide variety of medical fields for the regeneration of soft tissues. This systematic review gathered all the currently available in vitro, in vivo, and clinical literature utilizing PRF for soft tissue regeneration, augmentation, and/or wound healing. In total, 164 publications met the original search criteria, with a total of 48 publications meeting inclusion criteria (kappa score = 94%). These studies were divided into 7 in vitro, 11 in vivo, and 31 clinical studies. In summary, 6 out of 7 (85.7%) and 11 out of 11 (100%) of the in vitro and in vivo studies, respectively, demonstrated a statistically significant advantage for combining PRF to their regenerative therapies. Out of the remaining 31 clinical studies, a total of 8 reported the effects of PRF in a randomized clinical trial, with 5 additional studies (13 total) reporting appropriate controls. In those clinical studies, 9 out of the 13 studies (69.2%) demonstrated a statistically relevant positive outcome for the primary endpoints measured. In total, 18 studies (58% of clinical studies) reported positive wound-healing events associated with the use of PRF, despite using controls. Furthermore, 27 of the 31 clinical studies (87%) supported the use of PRF for soft tissue regeneration and wound healing for a variety of procedures in medicine and dentistry. In conclusion, the results from the present systematic review highlight the positive effects of PRF on wound healing after regenerative therapy for the management of various soft tissue defects found in medicine and dentistry.
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Affiliation(s)
- Richard J Miron
- 1 Department of Periodontology, Nova Southeastern University , Fort Lauderdale, Florida
| | - Masako Fujioka-Kobayashi
- 1 Department of Periodontology, Nova Southeastern University , Fort Lauderdale, Florida.,2 Cranio-Maxillofacial Surgery, Bern University Hospital , Inselspital, Bern, Switzerland .,3 Department of Oral Surgery, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima, Japan
| | - Mark Bishara
- 4 West Bowmanville Family Dental , Ontario, Canada
| | - Yufeng Zhang
- 5 Department of Oral Implantology, University of Wuhan , Wuhan, China
| | - Maria Hernandez
- 1 Department of Periodontology, Nova Southeastern University , Fort Lauderdale, Florida
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Ninan N, Thomas S, Grohens Y. Wound healing in urology. Adv Drug Deliv Rev 2015; 82-83:93-105. [PMID: 25500273 DOI: 10.1016/j.addr.2014.12.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 11/25/2014] [Accepted: 12/02/2014] [Indexed: 12/20/2022]
Abstract
Wound healing is a dynamic and complex phenomenon of replacing devitalized tissues in the body. Urethral healing takes place in four phases namely inflammation, proliferation, maturation and remodelling, similar to dermal healing. However, the duration of each phase of wound healing in urology is extended for a longer period when compared to that of dermatology. An ideal wound dressing material removes exudate, creates a moist environment, offers protection from foreign substances and promotes tissue regeneration. A single wound dressing material shall not be sufficient to treat all kinds of wounds as each wound is distinct. This review includes the recent attempts to explore the hidden potential of growth factors, stem cells, siRNA, miRNA and drugs for promoting wound healing in urology. The review also discusses the different technologies used in hospitals to treat wounds in urology, which make use of innovative biomaterials synthesised in regenerative medicines like hydrogels, hydrocolloids, foams, films etc., incorporated with growth factors, drug molecules or nanoparticles. These include surgical zippers, laser tissue welding, negative pressure wound therapy, and hyperbaric oxygen treatment.
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Chen Y, Niu Z, Xue Y, Yuan F, Fu Y, Bai N. Improvement in the repair of defects in maxillofacial soft tissue in irradiated minipigs by a mixture of adipose-derived stem cells and platelet-rich fibrin. Br J Oral Maxillofac Surg 2014; 52:740-5. [PMID: 24993354 DOI: 10.1016/j.bjoms.2014.06.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 06/09/2014] [Indexed: 01/07/2023]
Abstract
To find out if adipose-derived stem cells (ASC) and platelet-rich fibrin (PRF), alone or combined, had any effect on the repair of maxillofacial soft tissue defects in irradiated minipigs, ASC were isolated, characterised, and expanded. Twenty female minipigs, the right parotid glands of which had been irradiated, were randomly divided into 4 groups of 5 each: those in the first group were injected with both ASC and PRF (combined group), the second group was injected with ASC alone (ASC group), the third group with PRF alone (PRF group), and the fourth group with phosphate buffer saline (PBS) (control group). Six months after the last injection, the size and depth of each defect were assessed, and subcutaneous tissues were harvested, stained with haematoxylin and eosin, and examined immunohistologically and for apoptosis. Expanded cells were successfully isolated and identified. Six months after injection the defects in the 3 treated groups were significantly smaller (p<0.001) and shallower (p<0.001) than those in the control group. Those in the combined group were the smallest and shallowest. Haematoxylin and eosin showed that the 3 treated groups contained more subcutaneous adipose tissue than the control group, and also had significantly greater vascular density (p<0.001) and fewer apoptotic cells (p<0.001). Both ASC and PRF facilitate the repair of defects in maxillofacial soft tissue in irradiated minipigs, and their combined use is more effective than their use as single agents.
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Affiliation(s)
- Yuanzheng Chen
- Department of Burns Surgery, Linyi People's Hospital, Linyi, Shandong 276000, China
| | - Zhanguo Niu
- Department of Burns and Plastic Surgery, Dongguan People's Hospital, Dongguan, Guangdong 523059, China
| | - Yan Xue
- Department of Ultrasonography, Linyi People's Hospital, Linyi, Shandong 276000, China
| | - Fukang Yuan
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yanjie Fu
- Department of Burns Surgery, Linyi People's Hospital, Linyi, Shandong 276000, China
| | - Nan Bai
- Department of Plastic Surgery, Linyi People's Hospital, Linyi, Shandong 276000, China.
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