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Vladulescu D, Scurtu LG, Simionescu AA, Scurtu F, Popescu MI, Simionescu O. Platelet-Rich Plasma (PRP) in Dermatology: Cellular and Molecular Mechanisms of Action. Biomedicines 2023; 12:7. [PMID: 38275368 PMCID: PMC10813350 DOI: 10.3390/biomedicines12010007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/10/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Platelet-rich plasma (PRP) therapy has gained attention in the scientific field due to its potential regenerative effects and great benefit-risk ratio. This review extensively explores the most studied mechanisms of this therapy according to the etiopathogenesis of skin diseases: cellular proliferation, matrix formation, regulation of inflammation, angiogenesis, collagen synthesis, and the remodeling of new tissue. Moreover, it draws on newly reported and lesser-known effects of PRP: its anti-apoptotic effects, immunological suppression, decrease in melanin synthesis, anti-microbial effects, overexpression of miR-155, antioxidant effects, and their involved pathways. This work aims to provide a complete update for understanding PRP's benefits and clinical relevance in wound healing, alopecia, pigmentary disorders, scars, rejuvenation, lichen sclerosus, and other inflammatory dermatoses, based on the current evidence. Furthermore, recent reports with novel indications for PRP therapy are highlighted, and new potential pathways correlated with the pathogenesis of skin diseases are explored.
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Affiliation(s)
- Denisa Vladulescu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology I, Colentina Hospital, 020125 Bucharest, Romania
| | - Lucian G. Scurtu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology I, Colentina Hospital, 020125 Bucharest, Romania
| | - Anca Angela Simionescu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, 011132 Bucharest, Romania
| | - Francesca Scurtu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Obstetrics and Gynecology, Filantropia Clinical Hospital, 011132 Bucharest, Romania
| | - Marco I. Popescu
- Faculty of Medicine, “Titu Maiorescu” University, 040441 Bucharest, Romania
| | - Olga Simionescu
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology I, Colentina Hospital, 020125 Bucharest, Romania
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Ivanova E, Fayzullin A, Minaev N, Dolganova I, Serejnikova N, Gafarova E, Tokarev M, Minaeva E, Aleksandrova P, Reshetov I, Timashev P, Shekhter A. Surface Topography of PLA Implants Defines the Outcome of Foreign Body Reaction: An In Vivo Study. Polymers (Basel) 2023; 15:4119. [PMID: 37896364 PMCID: PMC10610271 DOI: 10.3390/polym15204119] [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: 07/27/2023] [Revised: 09/19/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
The formation of a dense fibrous capsule around the foreign body and its contracture is the most common complication of biomaterial implantation. The aim of our research is to find out how the surface of the implant influences the inflammatory and fibrotic reactions in the surrounding tissues. We made three types of implants with a remote surface topography formed of polylactide granules with different diameters: large (100-200 µm), medium (56-100 µm) and small (1-56 µm). We placed these implants in skin pockets in the ears of six chinchilla rabbits. We explanted the implants on the 7th, 14th, 30th and 60th days and performed optical coherence tomography, and histological, immunohistochemical and morphometric studies. We examined 72 samples and compared the composition of immune cell infiltration, vascularization, the thickness of the peri-implant tissues, the severity of fibrotic processes and α-SMA expression in myofibroblasts. We analyzed the scattering coefficient of tissue layers on OCT scans. We found that implants made from large granules induced a milder inflammatory process and slower formation of a connective tissue capsule around the foreign body. Our results prove the importance of assessing the surface texture in order to avoid the formation of capsular contracture after implantation.
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Affiliation(s)
- Elena Ivanova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
- B.V. Petrovsky Russian Research Center of Surgery, 2 Abrikosovskiy Lane, Moscow 119991, Russia
| | - Alexey Fayzullin
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
| | - Nikita Minaev
- Institute of Photon Technologies of FSRC “Crystallography and Photonics” RAS, Troitsk, Moscow 108840, Russia; (N.M.); (E.M.)
| | - Irina Dolganova
- Osipyan Institute of Solid State Physics of the Russian Academy of Sciences, 2 Osipyan St., Chernogolovka 142432, Russia;
| | - Natalia Serejnikova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
| | - Elvira Gafarova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
| | - Mark Tokarev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
| | - Ekaterina Minaeva
- Institute of Photon Technologies of FSRC “Crystallography and Photonics” RAS, Troitsk, Moscow 108840, Russia; (N.M.); (E.M.)
| | - Polina Aleksandrova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilova St., Moscow 119991, Russia;
| | - Igor Reshetov
- L.L. Levshin Institute of Cluster Oncology, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia;
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia
| | - Anatoly Shekhter
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., Moscow 119991, Russia; (E.I.); (A.F.); (N.S.); (E.G.); (M.T.); (P.T.)
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Valieva Y, Igrunkova A, Fayzullin A, Serejnikova N, Kurkov A, Fayzullina N, Valishina D, Bakulina A, Timashev P, Shekhter A. Epimorphic Regeneration of Elastic Cartilage: Morphological Study into the Role of Cellular Senescence. BIOLOGY 2023; 12:biology12040565. [PMID: 37106768 PMCID: PMC10136161 DOI: 10.3390/biology12040565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023]
Abstract
Control over endogenous reparative mechanisms is the future of regenerative medicine. The rabbit ear defect is a rare model which allows the observation of the epimorphic regeneration of elastic cartilage. However, the mechanisms of phenotypical restoration of this highly differentiated tissue have not been studied. We modelled circular ear defects of different sizes (4, 6, and 8 mm in diameter) in 12 laboratory rabbits, and observed them during 30, 60, 90, and 120 day periods. Excised tissues were processed and analyzed by standard histological methods and special histochemical reactions for senescence associated-β-galactosidase and lectin markers. We demonstrated that larger defects caused significant elevation of senescence associated-β-galactosidase in chondrocytes. The fullness of epimorphic regeneration of elastic cartilage depended on the activation of cellular senescence and synthesis of elastic fibers. Further investigation into the role of cells with senescence-associated secretory phenotype in damaged tissues can present new targets for controlled tissue regeneration.
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Affiliation(s)
- Yana Valieva
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Aleksandra Igrunkova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
- Department of Human Anatomy and Histology, N. V. Sklifosovsky Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Alexey Fayzullin
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Natalia Serejnikova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Aleksandr Kurkov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Nafisa Fayzullina
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Dina Valishina
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Alesia Bakulina
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
| | - Anatoly Shekhter
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya St., 119991 Moscow, Russia
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Zhang Q, Shi L, He H, Liu X, Huang Y, Xu D, Yao M, Zhang N, Guo Y, Lu Y, Li H, Zhou J, Tan J, Xing M, Luo G. Down-Regulating Scar Formation by Microneedles Directly via a Mechanical Communication Pathway. ACS NANO 2022; 16:10163-10178. [PMID: 35617518 PMCID: PMC9331171 DOI: 10.1021/acsnano.1c11016] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Excessive extracellular matrix deposition drives fibroblasts into a state of high mechanical stress, exacerbating pathological fibrosis and hypertrophic scar formation, leading to tissue dysfunction. This study reports a minimally invasive and convenient approach to obtaining scarless tissue using a silk fibroin microneedle patch (SF MNs). We found that by tuning the MN size and density only, the biocompatible MNs significantly decreased the scar elevation index in the rabbit ear hypertrophic scar model and increased ultimate tensile strength close to regular skin. To advance our understanding of this recent approach, we built a fibroblast-populated collagen lattice system and finite element model to study MN-mediated cellular behavior of fibroblasts. We found that the MNs reduced the fibroblasts generated contraction and mechanical stress, as indicated by decreased expression of the mechanical sensitive gene ANKRD1. Specifically, SF MNs attenuated the integrin-FAK signaling and consequently down-regulated the expression of TGF-β1, α-SMA, collagen I, and fibronectin. It resulted in a low-stress microenvironment that helps to reduce scar formation significantly. Microneedles' physical intervention via the mechanotherapeutic strategy is promising for scar-free wound healing.
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Affiliation(s)
- Qing Zhang
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Lin Shi
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Hong He
- Ministry
of Education & Key Disciplines Laboratory of Novel Micro-Nano
Devices and System Technology, Chongqing
University, Chongqing 400044, China
| | - Xingmou Liu
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
- Chongqing
Key Laboratory of Complex Systems and Bionic Control, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Yong Huang
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Dan Xu
- Department
of Pathology, Southwest Hospital, Third
Military Medical University (Army Medical University), Chongqing 400038, China
| | - Mengyun Yao
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Ning Zhang
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Yicheng Guo
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Yifei Lu
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Haisheng Li
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Junyi Zhou
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Jianglin Tan
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
| | - Malcolm Xing
- Department
of Mechanical Engineering, University of
Manitoba, Winnipeg, R3T 2N2, Canada
| | - Gaoxing Luo
- Institute
of Burn Research, State Key Laboratory of Trauma, Burn and Combined
Injury, Southwest Hospital, Third Military
Medical University (Army Medical University), Chongqing 400038, China
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Automated Structural Analysis and Quantitative Characterization of Scar Tissue Using Machine Learning. Diagnostics (Basel) 2022; 12:diagnostics12020534. [PMID: 35204623 PMCID: PMC8871086 DOI: 10.3390/diagnostics12020534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/17/2022] [Accepted: 02/17/2022] [Indexed: 11/17/2022] Open
Abstract
An analysis of scar tissue is necessary to understand the pathological tissue conditions during or after the wound healing process. Hematoxylin and eosin (HE) staining has conventionally been applied to understand the morphology of scar tissue. However, the scar lesions cannot be analyzed from a whole slide image. The current study aimed to develop a method for the rapid and automatic characterization of scar lesions in HE-stained scar tissues using a supervised and unsupervised learning algorithm. The supervised learning used a Mask region-based convolutional neural network (RCNN) to train a pattern from a data representation using MMDetection tools. The K-means algorithm characterized the HE-stained tissue and extracted the main features, such as the collagen density and directional variance of the collagen. The Mask RCNN model effectively predicted scar images using various backbone networks (e.g., ResNet50, ResNet101, ResNeSt50, and ResNeSt101) with high accuracy. The K-means clustering method successfully characterized the HE-stained tissue by separating the main features in terms of the collagen fiber and dermal mature components, namely, the glands, hair follicles, and nuclei. A quantitative analysis of the scar tissue in terms of the collagen density and directional variance of the collagen confirmed 50% differences between the normal and scar tissues. The proposed methods were utilized to characterize the pathological features of scar tissue for an objective histological analysis. The trained model is time-efficient when used for detection in place of a manual analysis. Machine learning-assisted analysis is expected to aid in understanding scar conditions, and to help establish an optimal treatment plan.
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Local Delivery of Pirfenidone by PLA Implants Modifies Foreign Body Reaction and Prevents Fibrosis. Biomedicines 2021; 9:biomedicines9080853. [PMID: 34440057 PMCID: PMC8389617 DOI: 10.3390/biomedicines9080853] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 01/04/2023] Open
Abstract
Peri-implant fibrosis (PIF) increases the postsurgical risks after implantation and limits the efficacy of the implantable drug delivery systems (IDDS). Pirfenidone (PF) is an oral anti-fibrotic drug with a short (<3 h) circulation half-life and strong adverse side effects. In the current study, disk-shaped IDDS prototype combining polylactic acid (PLA) and PF, PLA@PF, with prolonged (~3 days) PF release (in vitro) was prepared. The effects of the PLA@PF implants on PIF were examined in the rabbit ear skin pocket model on postoperative days (POD) 30 and 60. Matching blank PLA implants (PLA0) and PLA0 with an equivalent single-dose PF injection performed on POD0 (PLA0+injPF) served as control. On POD30, the intergroup differences were observed in α-SMA, iNOS and arginase-1 expressions in PLA@PF and PLA0+injPF groups vs. PLA0. On POD60, PIF was significantly reduced in PLA@PF group. The peri-implant tissue thickness decreased (532 ± 98 μm vs. >1100 μm in control groups) approaching the intact derma thickness value (302 ± 15 μm). In PLA@PF group, the implant biodegradation developed faster, while arginase-1 expression was suppressed in comparison with other groups. This study proves the feasibility of the local control of fibrotic response on implants via modulation of foreign body reaction with slowly biodegradable PF-loaded IDDS.
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