651
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Design of a biodegradable UV-irradiated gelatin-chitosan/nanocomposed membrane with osteogenic ability for application in bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:875-886. [DOI: 10.1016/j.msec.2019.01.135] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 01/09/2019] [Accepted: 01/31/2019] [Indexed: 12/27/2022]
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652
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Coentro JQ, Pugliese E, Hanley G, Raghunath M, Zeugolis DI. Current and upcoming therapies to modulate skin scarring and fibrosis. Adv Drug Deliv Rev 2019; 146:37-59. [PMID: 30172924 DOI: 10.1016/j.addr.2018.08.009] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 07/08/2018] [Accepted: 08/26/2018] [Indexed: 12/12/2022]
Abstract
Skin is the largest organ of the human body. Being the interface between the body and the outer environment, makes it susceptible to physical injury. To maintain life, nature has endowed skin with a fast healing response that invariably ends in the formation of scar at the wounded dermal area. In many cases, skin remodelling may be impaired, leading to local hypertrophic scars or keloids. One should also consider that the scarring process is part of the wound healing response, which always starts with inflammation. Thus, scarring can also be induced in the dermis, in the absence of an actual wound, during chronic inflammatory processes. Considering the significant portion of the population that is subject to abnormal scarring, this review critically discusses the state-of-the-art and upcoming therapies in skin scarring and fibrosis.
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Affiliation(s)
- João Q Coentro
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland; Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland
| | - Eugenia Pugliese
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland; Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland
| | - Geoffrey Hanley
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland; Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland
| | - Michael Raghunath
- Center for Cell Biology and Tissue Engineering, Institute for Chemistry and Biotechnology (ICBT), Zurich University of Applied Sciences (ZHAW), Wädenswil, Switzerland
| | - Dimitrios I Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland; Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI, Galway), Galway, Ireland.
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653
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Botulinum toxin type A prevents the phenotypic transformation of fibroblasts induced by TGF‑β1 via the PTEN/PI3K/Akt signaling pathway. Int J Mol Med 2019; 44:661-671. [PMID: 31173164 PMCID: PMC6605626 DOI: 10.3892/ijmm.2019.4226] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 05/24/2019] [Indexed: 01/06/2023] Open
Abstract
Hypertrophic scar (HS) is a common type of dermatosis. Botulinum toxin type A (BTXA) can exert an anti-HS effect; however, the regulatory mechanisms underlying this effect remain unclear. Thus, the aim of this study was to examine the effects of BTXA on phosphatase and tensin homolog deleted on chromosome ten (PTEN) expression and the fibroblast phenotypic transformation induced by transforming growth factor (TGF)-β1, which is an important regulatory factor involved in the process of HS. For this purpose, fibroblasts were treated with various concentrations of BTXA and then treated with 10 ng/ml of TGF-β1 with gradient concentrations of BTXA. The proliferation and apoptosis of fibroblasts were measured by cell counting kit-8 assay (CCK-8) and flow cytometry, respectively. PTEN methylation was analyzed by methylation-specific PCR (MSP) and DNA methyltransferase (DNMT) activity was determined using a corresponding kit. RT-qPCR and western blot analysis were performed to detect the transcription and translation levels. The results revealed that BTXA suppressed the proliferation and increased the apoptosis of fibroblasts treated with TGF-β1 in a dose-dependent manner. BTXA in combination with TGF-β1 suppressed the expression of molecules related to the extracellular matrix (ECM), epithelial-mesenchymal transition (EMT) and apoptosis. BTXA reduced the PTEN methylation level and downregulated the expression levels of methylation-associated genes. BTXA also inhibited the phosphorylation of phosphoinositide 3-kinase (PI3K) and Akt. On the whole, the findings of this study indicate that BTXA may inhibit fibroblast phenotypic transformation by regulating PTEN methylation and the phosphorylation of related pathways. The findings of this study can provide a theoretical basis for HS treatment.
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654
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Moghadam SE, Moridi Farimani M, Soroury S, Ebrahimi SN, Jabbarzadeh E. Hypermongone C Accelerates Wound Healing through the Modulation of Inflammatory Factors and Promotion of Fibroblast Migration. Molecules 2019; 24:molecules24102022. [PMID: 31137844 PMCID: PMC6572485 DOI: 10.3390/molecules24102022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 01/09/2023] Open
Abstract
The physiology of wound healing is dependent on the crosstalk between inflammatory mediators and cellular components of skin regeneration including fibroblasts and endothelial cells. Therefore, strategies to promote healing must regulate this crosstalk to achieve maximum efficacy. In light of the remarkable potential of natural compounds to target multiple signaling mechanisms, this study aims to demonstrate the potential of hypermongone C, a polycyclic polyprenylated acylphloroglucinol (PPAP), to accelerate wound closure by concurrently enhancing fibroblast proliferation and migration, promoting angiogenesis, and suppressing pro-inflammatory cytokines. This compound belongs to a family of plants (Hypericum) that traditionally have been used to treat injuries. Nevertheless, the exact biological evidence to support the claims is still missing. The results were obtained using a traditional model of cell scratch assay and endothelial cell tube formation, combined with the analysis of protein and gene expression by macrophages. In summary, the data suggest that hypermongone C is a multi-targeting therapeutic natural compound for the promotion of tissue repair and the regulation of inflammation.
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Affiliation(s)
- Sara E Moghadam
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA.
| | - Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drug Research Institute, Shahid Beheshti University, GC, Evin, Tehran 1983969411, Iran.
| | - Sara Soroury
- Department of Phytochemistry, Faculty of Science, Golestan University, Gorgan 49138157559, Iran.
| | - Samad N Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drug Research Institute, Shahid Beheshti University, GC, Evin, Tehran 1983969411, Iran.
| | - Ehsan Jabbarzadeh
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA.
- Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, USA.
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655
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Bolla SR, Mohammed Al-Subaie A, Yousuf Al-Jindan R, Papayya Balakrishna J, Kanchi Ravi P, Veeraraghavan VP, Arumugam Pillai A, Gollapalli SSR, Palpath Joseph J, Surapaneni KM. In vitro wound healing potency of methanolic leaf extract of Aristolochia saccata is possibly mediated by its stimulatory effect on collagen-1 expression. Heliyon 2019; 5:e01648. [PMID: 31193473 PMCID: PMC6529694 DOI: 10.1016/j.heliyon.2019.e01648] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/21/2019] [Accepted: 05/01/2019] [Indexed: 01/09/2023] Open
Abstract
Background Identification and assessment of therapeutic potential of natural products derived from medicinal plants have led to the discovery of innovative and economical drugs to treat several diseases, including chronic wounds. In vitro cell based scratch assay is an appropriate and inexpensive method for initial understanding of wound healing potential of medicinal plant extracts. The current study was aimed at investigating the wound healing capacity of Aristolochia saccata leaf extract by using scratch assay as a primary model, where proliferative and migratory capabilities of test compounds could be monitored through microscopy studies. A. saccata is an evergreen climbing shrub belongs to the family Aristolochiaceae. Methods Methanolic extraction of the plant material was done using Soxhlet apparatus and the cytotoxicity of the extract on L929 cells was studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. L929 is a human fibroblast cell line. In vitro scratch assay was performed to evaluate the wound healing properties of A. saccata leaf extract and possible mechanism of action was analyzed by flow cytometric expression studies of an extracellular matrix (ECM) factor, collagen type-1. Results MTT assay revealed that A. saccata leaf extract had no cytotoxic effect on the cells and at higher concentrations, the extract showed mild toxicity resulting in the death of just 2.88% cells. Scratch assay showed 34.05%, 70.00%, 93.52% wound closure at 12hrs, 24hrs and 48hrs of incubation respectively. These results were similar compared to positive control which showed 37.60, 56.41 and 99.05% of wound closure. Further, flow cytometry-based studies revealed that the A. saccata leaf extract induced the expression of ECM remodelling factor collagen-1. Conclusion Our study revealed the wound healing capabilities of A. saccata In vitro. Hence, A. saccata could be recommended as a potential source of wound healing agents.
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Affiliation(s)
- Srinivasa Rao Bolla
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, P.O. Box 2114, Dammam 31451, Saudi Arabia
| | - Abeer Mohammed Al-Subaie
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, P.O. Box 2435, Dammam 31451, Saudi Arabia
| | - Reem Yousuf Al-Jindan
- Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University, P.O. Box 2114, Dammam 31451, Saudi Arabia
| | - Janardhana Papayya Balakrishna
- Department of Biotechnology, Stellixir Biotech Private Ltd, Peenya 2nd Stage Industrial Area, Bangalore 560058, Karnataka, India
| | - Padma Kanchi Ravi
- Department of Biotechnology, Sri Padmavati Mahila Visva Vidyalayam University, Tirupati, Andhra Pradesh, India
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, 162, P. H. Road, Velappanchavadi, Chennai 600 077, Tamil Nadu, India
| | - Aruthra Arumugam Pillai
- Department of Biotechnology, Stellixir Biotech Private Ltd, Peenya 2nd Stage Industrial Area, Bangalore 560058, Karnataka, India
| | - Shiva Shankar Reddy Gollapalli
- Department of Biotechnology, Stellixir Biotech Private Ltd, Peenya 2nd Stage Industrial Area, Bangalore 560058, Karnataka, India
| | - Joel Palpath Joseph
- Department of Biotechnology, Stellixir Biotech Private Ltd, Peenya 2nd Stage Industrial Area, Bangalore 560058, Karnataka, India
| | - Krishna Mohan Surapaneni
- Department of Medical Biochemistry, College of Applied Medical Sciences - Jubail (CAMSJ), Imam Abdulrahman Bin Faisal University, P.O. Box 4030, Al Ansar Rd, Deffi, Jubail Industrial City, Al Jubail 35816, Saudi Arabia
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656
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Schreurs M, Suttorp CM, Mutsaers HAM, Kuijpers-Jagtman AM, Von den Hoff JW, Ongkosuwito EM, Carvajal Monroy PL, Wagener FADTG. Tissue engineering strategies combining molecular targets against inflammation and fibrosis, and umbilical cord blood stem cells to improve hampered muscle and skin regeneration following cleft repair. Med Res Rev 2019; 40:9-26. [PMID: 31104334 PMCID: PMC6972684 DOI: 10.1002/med.21594] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 12/18/2022]
Abstract
Cleft lip with or without cleft palate is a congenital deformity that occurs in about 1 of 700 newborns, affecting the dentition, bone, skin, muscles and mucosa in the orofacial region. A cleft can give rise to problems with maxillofacial growth, dental development, speech, and eating, and can also cause hearing impairment. Surgical repair of the lip may lead to impaired regeneration of muscle and skin, fibrosis, and scar formation. This may result in hampered facial growth and dental development affecting oral function and lip and nose esthetics. Therefore, secondary surgery to correct the scar is often indicated. We will discuss the molecular and cellular pathways involved in facial and lip myogenesis, muscle anatomy in the normal and cleft lip, and complications following surgery. The aim of this review is to outline a novel molecular and cellular strategy to improve musculature and skin regeneration and to reduce scar formation following cleft repair. Orofacial clefting can be diagnosed in the fetus through prenatal ultrasound screening and allows planning for the harvesting of umbilical cord blood stem cells upon birth. Tissue engineering techniques using these cord blood stem cells and molecular targeting of inflammation and fibrosis during surgery may promote tissue regeneration. We expect that this novel strategy improves both muscle and skin regeneration, resulting in better function and esthetics after cleft repair.
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Affiliation(s)
- Michaël Schreurs
- Department of Dentistry, Section of Orthodontics and Craniofacial Biology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - C Maarten Suttorp
- Department of Dentistry, Section of Orthodontics and Craniofacial Biology, Radboud University Medical Centre, Nijmegen, The Netherlands.,Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands
| | | | | | - Johannes W Von den Hoff
- Department of Dentistry, Section of Orthodontics and Craniofacial Biology, Radboud University Medical Centre, Nijmegen, The Netherlands.,Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Edwin M Ongkosuwito
- Department of Dentistry, Section of Orthodontics and Craniofacial Biology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Paola L Carvajal Monroy
- Department of Oral & Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Frank A D T G Wagener
- Department of Dentistry, Section of Orthodontics and Craniofacial Biology, Radboud University Medical Centre, Nijmegen, The Netherlands.,Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands
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657
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Belokhvostova D, Berzanskyte I, Cujba AM, Jowett G, Marshall L, Prueller J, Watt FM. Homeostasis, regeneration and tumour formation in the mammalian epidermis. THE INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY 2019; 62:571-582. [PMID: 29938768 DOI: 10.1387/ijdb.170341fw] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The epidermis is the outer covering of the skin and provides a protective interface between the body and the environment. It is well established that the epidermis is maintained by stem cells that self-renew and generate differentiated cells. In this review, we discuss how recent technological advances, including single cell transcriptomics and in vivo imaging, have provided new insights into the nature and plasticity of the stem cell compartment and the differing roles of stem cells in homeostasis, wound repair and cancer.
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Affiliation(s)
- Daria Belokhvostova
- King's College London Centre for Stem Cells and Regenerative Medicine, Guy's Hospital, London, UK
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658
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Mohammadi Z, Sharif Zak M, Majdi H, Mostafavi E, Barati M, Lotfimehr H, Ghaseminasab K, Pazoki-Toroudi H, Webster TJ, Akbarzadeh A. The effect of chrysin–curcumin-loaded nanofibres on the wound-healing process in male rats. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1642-1652. [DOI: 10.1080/21691401.2019.1594855] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zoheyr Mohammadi
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohsen Sharif Zak
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hasan Majdi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ebrahim Mostafavi
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Meisam Barati
- School of Nutrition and Food Technology, Cellular and Molecular Nutrition Department, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Lotfimehr
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kambiz Ghaseminasab
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamidreza Pazoki-Toroudi
- Physiology Research Center and Department of Physiology, Iran University of Medical Sciences, Tehran, Iran
| | - Thomas J. Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Abolfazl Akbarzadeh
- Tuberculosis and Lung Disease Research Center of Tabriz, Tabriz University of Medical Sciences, Tabriz, Iran
- Universal Scientific and Education Network (USERN), Tabriz, Iran
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659
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Jian X, Qu L, Wang Y, Zou Q, Zhao Q, Chen S, Gao X, Chen H, He C. Trichostatin A‑induced miR‑30a‑5p regulates apoptosis and proliferation of keloid fibroblasts via targeting BCL2. Mol Med Rep 2019; 19:5251-5262. [PMID: 31059100 PMCID: PMC6522919 DOI: 10.3892/mmr.2019.10185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 02/06/2019] [Indexed: 12/28/2022] Open
Abstract
Keloids are benign fibrous overgrowths that occur as a result of abnormal wound healing following cutaneous injury. MicroRNAs (miRNAs/miRs) are short non-coding RNAs that serve critical roles in numerous important biological processes, such as cell proliferation, differentiation and apoptosis. However, their role in keloid development remains largely unknown. In the present study, the role of miR-30a-5p, a miRNA regulated by Trichostatin A (TSA), in apoptosis within cultured keloid fibroblasts was investigated. An MTT assay was used to detect the proliferation of cultured keloid fibroblasts treated with TSA. Cell apoptosis and cell cycle phases were analyzed using flow cytometry. In addition, an miRNA microarray was performed to compare expression profiles between cultured keloid fibroblasts treated with or without 1,000 nM TSA. Reverse transcription-quantitative polymerase chain reaction analysis was conducted to estimate miRNA expression levels. The direct target of miR-30a-5p was identified using a dual-luciferase reporter assay. Western blotting was employed to assess protein expression levels in keloid fibroblasts. The results demonstrated that TSA inhibited the proliferation of keloid fibroblasts in a time- and dose-dependent manner. The miRNA microarray revealed alterations in the expression of numerous miRNA sequences in response to TSA when compared with controls. Notably, the expression of miR-30a-5p was downregulated in keloid tissues. In addition, overexpression of miR-30a-5p induced apoptosis by targeting B-cell lymphoma 2, which was similar to that observed in response to TSA. These results provide important information regarding a novel miR-30a-5p-mediated signaling pathway induced by TSA treatment, and suggest a potential use for TSA and miR-30a-5p as effective therapeutic strategies for keloids.
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Affiliation(s)
- Xiaoqing Jian
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Le Qu
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Yunlin Wang
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Qianlei Zou
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Qing Zhao
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Shuang Chen
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Xinghua Gao
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Hongduo Chen
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
| | - Chundi He
- Department of Dermatology, No. 1 Hospital of China Medical University, Key Laboratory of Immunodermatology, Shenyang, Liaoning 110001, P.R. China
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660
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Abstract
Mesenchymal stem cells (MSCs) are multipotent tissue stem cells that differentiate into a number of mesodermal tissue types, including osteoblasts, adipocytes, chondrocytes and myofibroblasts. MSCs were originally identified in the bone marrow (BM) of humans and other mammals, but recent studies have shown that they are multilineage progenitors in various adult organs and tissues. MSCs that localize at perivascular sites function to rapidly respond to external stimuli and coordinate with the vascular and immune systems to accomplish the wound healing process. Cancer, considered as wounds that never heal, is also accompanied by changes in MSCs that parallels the wound healing response. MSCs are now recognized as key players at distinct steps of tumorigenesis. In this review, we provide an overview of the function of MSCs in wound healing and cancer progression with the goal of providing insight into the development of novel MSC-manipulating strategies for clinical cancer treatment.
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661
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Multiscale Modelling of Fibres Dynamics and Cell Adhesion within Moving Boundary Cancer Invasion. Bull Math Biol 2019; 81:2176-2219. [PMID: 30980344 PMCID: PMC6612324 DOI: 10.1007/s11538-019-00598-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 03/11/2019] [Indexed: 12/11/2022]
Abstract
Recognised as one of the hallmarks of cancer, local cancer cell invasion is a complex multiscale process that combines the secretion of matrix-degrading enzymes with a series of altered key cell processes (such as abnormal cell proliferation and changes in cell–cell and cell–matrix adhesion leading to enhanced migration) to degrade important components of the surrounding extracellular matrix (ECM) and this way spread further in the human tissue. In order to gain a deeper understanding of the invasion process, we pay special attention to the interacting dynamics between the cancer cell population and various constituents of the surrounding tumour microenvironment. To that end, we consider the key role that ECM plays within the human body tissue, and in particular we focus on the special contribution of its fibrous proteins components, such as collagen and fibronectin, which play an important part in cell proliferation and migration. In this work, we consider the two-scale dynamic cross-talk between cancer cells and a two-component ECM (consisting of both a fibre and a non-fibre phase). To that end, we incorporate the interlinked two-scale dynamics of cell–ECM interactions within the tumour support that contributes simultaneously both to cell adhesion and to the dynamic rearrangement and restructuring of the ECM fibres. Furthermore, this is embedded within a multiscale moving boundary approach for the invading cancer cell population, in the presence of cell adhesion at the tissue scale and cell-scale fibre redistribution activity and leading edge matrix-degrading enzyme molecular proteolytic processes. The overall modelling framework will be accompanied by computational results that will explore the impact on cancer invasion patterns of different levels of cell adhesion in conjunction with the continuous ECM fibres rearrangement.
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662
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Aballay A, Hermans MHE. Neodermis Formation in Full Thickness Wounds Using an Esterified Hyaluronic Acid Matrix. J Burn Care Res 2019; 40:585-589. [PMID: 30957154 DOI: 10.1093/jbcr/irz057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AbstractThe role of the dermis is essential for the proper orchestration of all phases of the normal wound healing process. Wounds with seriously damaged or even absent dermis consistently show seriously impaired wound healing and/or long-term complications such as hypertrophic scarring. Replacing a damaged dermis requires a dermal matrix that is compatible with, or even stimulates, the process of wound healing. Hyaluronic acid (HA), in an esterified form, is among the many matrices that are available. HA has been used in a number of indications, such as ulcers (ie, diabetic foot ulcers and venous leg ulcers), trauma, including burns, and for the repair of contractures and hypertrophic scars. The shorter healing time and the decrease of recurring hypertrophy demonstrate the efficiency of HA-derived matrices. Biopsies, taken up to 12 months post-reconstruction show a neodermis that histologically is largely comparable to normal skin, which probably is a function of HA playing such a pivotal role in normal, unwounded skin, as well as in the process of healing.
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Affiliation(s)
- Ariel Aballay
- Burn Center, West Penn Hospital, Allegheny Health Network, Pittsburgh, Pennsylvania
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663
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Kim M, Kim SW, Kim H, Hwang CW, Man Choi J, Kang HW. Development of a reproducible in vivo laser-induced scar model for wound healing study and management. BIOMEDICAL OPTICS EXPRESS 2019; 10:1965-1977. [PMID: 31061768 PMCID: PMC6485006 DOI: 10.1364/boe.10.001965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
The aim of the current study was to establish animal scar models in a simple and rapid manner by comparing three methods. Wounds were created on the buttocks of Sprague Dawley rats. For Group 1, the initial wound was created by surgical incision. For Groups 2 and 3, a 1470-nm laser was employed to generate dermal burns as the initial wound. The wounds in Groups 1 and 3 were then sutured for three days. After the wound healing, Group 2 generated the largest collagen proportion with abundant collagen type I and significant increases in α-SMA and TGF-β1. The proposed method can be an efficient way to develop rat scar models in a simple manner for evaluating scar treatment.
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Affiliation(s)
- Myeongjin Kim
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, South Korea
- The authors (M Kim and SW Kim) equally contributed to this work
| | - Sung Won Kim
- Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, Busan, South Korea
- The authors (M Kim and SW Kim) equally contributed to this work
| | - Hyejin Kim
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, South Korea
| | - Chi Woo Hwang
- Department of Molecular Biology, Kosin University College of Medicine, Busan, Republic of Korea
| | | | - Hyun Wook Kang
- Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University, Busan, South Korea
- Department of Biomedical Engineering and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, South Korea
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664
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Brochado TMM, de Carvalho Schweich L, Di Pietro Simões N, Oliveira RJ, Antoniolli‐Silva ACMB. Carboxytherapy: Controls the inflammation and enhances the production of fibronectin on wound healing under venous insufficiency. Int Wound J 2019; 16:316-324. [PMID: 30467979 PMCID: PMC7949331 DOI: 10.1111/iwj.13031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/11/2018] [Accepted: 10/16/2018] [Indexed: 11/29/2022] Open
Abstract
To examine the influence of carboxytherapy on wound healing under venous insufficiency, full-thickness excisional wounds were created on Wistar rats. We used three groups with 32 rats each: Group (I): daily cleaning with 0.9% saline solution; Group Sulfadiazine (II): 1% silver sulfadiazine; and Carboxytherapy (III): subcutaneous application of 0.3 mL of carbon dioxide. The predetermined periods of analysis were the 3rd, 7th, 14th, and 30th day. The slides were stained with haematoxylin and eosin and Picrosirius red and submitted for immunohistochemistry. Groups II and III presented a statistically significant decrease in relation to the presence of neutrophilic and lymphocytic infiltrates. The presence of collagen significant increased in groups II and III. However, group III presented better organisation. Only group I maintained the neovascularisation until the 30th day. The new epithelium statistically significantly increased in groups II and III. On immunohistochemistry, regarding fibronectin expression, only group III demonstrated a statistically significant increase since the beginning of the healing process. Thus, the use of carboxytherapy promotes the formation of a tissue better structured and that may be an important resource for the treatment of wounds under venous insufficiency, especially those of recurrent re-openings.
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Affiliation(s)
- Themis M. M. Brochado
- Graduate Programme in Dermatofunctional PhysiotherapyBrazilian Institute of Therapies and Education (IBRATE)Campo GrandeBrazil
| | - Laynna de Carvalho Schweich
- Stem Cell, Cell Therapy and Toxicological Genetics Research Centre (CeTroGen)“Maria Aparecida Pedrossian” University Hospital, Brazilian Hospital Services Company (EBSERH)Campo GrandeBrazil
- Graduate Programme in Health and Development in the Central‐West Region, Faculty of Medicine (FAMED)Federal University of Mato Grosso do Sul (UFMS)Campo GrandeBrazil
| | - Naudimar Di Pietro Simões
- Graduate Programme in Dermatofunctional PhysiotherapyBrazilian Institute of Therapies and Education (IBRATE)Campo GrandeBrazil
| | - Rodrigo J. Oliveira
- Stem Cell, Cell Therapy and Toxicological Genetics Research Centre (CeTroGen)“Maria Aparecida Pedrossian” University Hospital, Brazilian Hospital Services Company (EBSERH)Campo GrandeBrazil
- Graduate Programme in Health and Development in the Central‐West Region, Faculty of Medicine (FAMED)Federal University of Mato Grosso do Sul (UFMS)Campo GrandeBrazil
- Graduate Programme in Genetics and Molecular Biology, Department of General BiologyState University of Londrina (UEL)LondrinaBrazil
| | - Andréia C. M. B. Antoniolli‐Silva
- Stem Cell, Cell Therapy and Toxicological Genetics Research Centre (CeTroGen)“Maria Aparecida Pedrossian” University Hospital, Brazilian Hospital Services Company (EBSERH)Campo GrandeBrazil
- Graduate Programme in Health and Development in the Central‐West Region, Faculty of Medicine (FAMED)Federal University of Mato Grosso do Sul (UFMS)Campo GrandeBrazil
- Faculty of Medicine (FAMED)Federal University of Mato Grosso do Sul (UFMS)Campo GrandeBrazil
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665
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desJardins-Park HE, Mascharak S, Chinta MS, Wan DC, Longaker MT. The Spectrum of Scarring in Craniofacial Wound Repair. Front Physiol 2019; 10:322. [PMID: 30984020 PMCID: PMC6450464 DOI: 10.3389/fphys.2019.00322] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 03/11/2019] [Indexed: 12/11/2022] Open
Abstract
Fibrosis is intimately linked to wound healing and is one of the largest causes of wound-related morbidity. While scar formation is the normal and inevitable outcome of adult mammalian cutaneous wound healing, scarring varies widely between different anatomical sites. The spectrum of craniofacial wound healing spans a particularly diverse range of outcomes. While most craniofacial wounds heal by scarring, which can be functionally and aesthetically devastating, healing of the oral mucosa represents a rare example of nearly scarless postnatal healing in humans. In this review, we describe the typical wound healing process in both skin and the oral cavity. We present clinical correlates and current therapies and discuss the current state of research into mechanisms of scarless healing, toward the ultimate goal of achieving scarless adult skin healing.
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Affiliation(s)
- Heather E. desJardins-Park
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Shamik Mascharak
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Malini S. Chinta
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Derrick C. Wan
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Michael T. Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
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666
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Ozay Y, Guzel S, Gokalp Ozkorkmaz E, Kumas M, Uzun C, Yıldırım Z, Celik A, Camlıca Y, Yumrutas O, Guler G, Erdal N, Tasdelen B, Didem Celikcan H, Kahraman A. Biochemical, Histopathologic, and Genotoxic Effects of Ethanol Extract of Salvia hypargeia (Fisch. & Mey.) on Incisional and Excisional Wounded Diabetic Rats. J INVEST SURG 2019; 34:7-19. [PMID: 30909758 DOI: 10.1080/08941939.2019.1590483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Purpose: Nonhealing wounds are a serious problem of diabetic patients. Salvia species are traditionally used for the treatment of wounds. The aim of the study was to investigate the effects of ointment prepared with ethanol extract obtained from the aerial parts of Salvia hypargeia, an endemic plant from Turkey, on diabetic rat incisional and excisional skin wounds. Materials and Methods: Male Wistar albino rats (n: 60) were divided into five groups. Diabetes was induced and two concentrations (0.5% and 1%) of the extract were used for ointments and applied on wounds for 7 and 14 days. Fito cream was chosen as a reference drug. Results: In excisional wounds, healing ratios of 0.5% (63.4% and 99.3%) and 1% (65.5% and 99.9%) S. hypargeia groups were higher compared to control (35.9% and 75.1%), and in incisional wounds, healing ratios of 0.5% (78.1% and 98.5%) and 1% (84.4% and 99.4%) S. hypargeia groups were higher compared to control (30.5% and 72.9%) (p < .01). Hydroxyproline (0.31 ± 0.3 and 0.34 ± 0.2) levels were lower and GSH (10.7 ± 3.1 and 7.6 ± 0.9) levels were higher in 0.5% and 1% S. hypargeia groups on the 14th day (p < .01). Histopathological results revealed re-epithelialization and formation of granulation tissue in all S. hypargeia groups. Genotoxicologic results indicated, GDI, DCP values, and MN frequency of 0.5% and 1% S. hypargeia groups did not reach to significant levels both on the 7 and 14 days. Conclusions: S. hypargeia may have a potential for therapeutic use in treatment and management of diabetic wounds with a successful topical application.
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Affiliation(s)
- Yusuf Ozay
- Department of Medical Biology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Sevda Guzel
- Department of Pharmacognosy, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Ebru Gokalp Ozkorkmaz
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır, Turkey
| | - Meltem Kumas
- Department of Histology, Faculty of Medicine, Bezmi Alem Vakif University, Istanbul, Turkey
| | - Cosar Uzun
- Department of Biophysics, Faculty of Medicine, Mersin University, Mersin, Turkey
| | | | - Ayla Celik
- Department of Biology, Faculty of Science, Mersin University, Mersin, Turkey
| | - Yusuf Camlıca
- Department of Biology, Faculty of Science, Mersin University, Mersin, Turkey
| | - Onder Yumrutas
- Department of Medical Biology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Gizem Guler
- Department of Biology, Faculty of Science, Mersin University, Mersin, Turkey
| | - Nurten Erdal
- Department of Biophysics, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Bahar Tasdelen
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Havva Didem Celikcan
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ahmet Kahraman
- Department of Biology, Faculty of Arts and Science, Uşak University, Uşak, Turkey
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667
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Shen Z, Zheng S, Chen G, Li D, Jiang Z, Li Y, Huang F. Efficacy and safety of platelet-rich plasma in treating cutaneous ulceration: A meta-analysis of randomized controlled trials. J Cosmet Dermatol 2019; 18:495-507. [PMID: 30912259 DOI: 10.1111/jocd.12853] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 12/10/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND The biological mechanisms underlying the use of platelet-rich plasma (PRP), as well as the efficacy and possible adverse effects of PRP, have not yet been fully elucidated. Prior studies have evaluated PRP for cutaneous ulceration. However, the benefits from PRP still remain controversial and few have assessed the effects of ulceration etiologies. The purpose of our study is to determine the efficacy and safety of PRP and which kind of ulcer is more suitable for PRP by analyzing the effects of PRP on ulcers with different causes. METHODS A comprehensive search was performed to identify randomized controlled trials (RCTs) regarding the application of PRP from PubMed, EMBASE, Scopus, and the Cochrane Library. The data were analyzed using Review Manager 5.3. RESULTS A total of nineteen RCTs (909 patients) were included. In contrast with conventional treatments, PRP achieved higher healing rate, higher percentage of area reduction, and smaller final area in vascular ulcers. However, the advantage disappeared in diabetic and pressure ulcers. Concerning adverse events, PRP showed lower incidence in the short term, but higher in the long term. No significant differences were found in ulcer closure velocity and healing time. CONCLUSION Platelet-rich plasma effectiveness and safety in treating cutaneous ulceration depend on what is the ulceration etiology. For diabetic ulcers, PRP showed no satisfactory results suggesting that PRP may not be suitable for diabetic patients. However, PRP could be efficient and more beneficial for vascular ulcers and effects on pressure ulcers remain unclear. Thus, PRP option should be carefully considered for each patient in accordance with their ulceration etiologies.
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Affiliation(s)
- Zhen Shen
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Shengpeng Zheng
- Department of Orthopaedics, Shenzhen Pingle Orthopedics Hospital, Shenzhen, Guangdong, China
| | - Guoqian Chen
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ding Li
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ziwei Jiang
- Department of Orthopaedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yue Li
- Department of Orthopaedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Feng Huang
- Department of Orthopaedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
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668
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Ali S, Alam S, Ahmad S, Ali M, Ahsan W, Raza Siddiqui M, Ansari S, Shamim S, Daud Ali M. Wound Healing Activity of Alcoholic Extract of Tamarix Aphylla L. on Animal Models. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/bpj/1611] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate the wound healing activity of ethanolic extract of Tamarix aphylla L. on animal model. Wound creation like circular excision and linear incision method were considered for this study. The various parameters were studied like DNA estimation, total protein estimation, estimation of Hexosamine and Uronic acid, estimation of lipid peroxides and antioxidant activity, Tensile Strength of tissues from incision wounds, Antioxidant activity, Antimicrobial activity, Period of epithelialization and finally TNF-a concentration in the wound tissue homogenate were estimated. The treatment groups with the extract showed significant antimicrobial activity with compare to the standard drug. Significantly, 93. 86% increase in the collagen content and significant 52% up regulation in tensile strength was observed in the treated group. 40% reduction was observed in epithelialization period of the treated wounds. The results of the current study confirm that the ethanolic extract of T. aphylla has potent wound healing capacity.
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Affiliation(s)
- Sajid Ali
- College of Pharmacy, Jazan University, Jazan, KSA
| | | | | | - Maksood Ali
- College of Pharmacy, Jazan University, Jazan, KSA
| | - Waquar Ahsan
- College of Pharmacy, Jazan University, Jazan, KSA
| | | | - Salahuddin Ansari
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia, KSA
| | - Shamim Shamim
- College of Pharmacy, Al-Dawadmi, Shaqra University, KSA
| | - Mohammad Daud Ali
- Department of Pharmacy, Mohammad Al-Mana college of Health Sciences, Abdulrazaq Bin Hammam Street, As Safa, Dammam, 34222, KSA
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669
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Calabro NE, Barrett A, Chamorro-Jorganes A, Tam S, Kristofik NJ, Xing H, Loye AM, Sessa WC, Hansen K, Kyriakides TR. Thrombospondin-2 regulates extracellular matrix production, LOX levels, and cross-linking via downregulation of miR-29. Matrix Biol 2019; 82:71-85. [PMID: 30876926 DOI: 10.1016/j.matbio.2019.03.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/13/2019] [Accepted: 03/09/2019] [Indexed: 12/12/2022]
Abstract
Collagen fibrillogenesis and crosslinking have long been implicated in extracellular matrix (ECM)-dependent processes such as fibrosis and scarring. However, the extent to which matricellular proteins influence ECM protein production and fibrillar collagen crosslinking has yet to be determined. Here we show that thrombospondin 2 (TSP2), an anti-angiogenic matricellular protein, is an important modulator of ECM homeostasis. Specifically, through a fractionated quantitative proteomics approach, we show that loss of TSP2 leads to a unique ECM phenotype characterized by a significant decrease in fibrillar collagen, matricellular, and structural ECM protein production in the skin of TSP2 KO mice. Additionally, TSP2 KO skin displays decreased lysyl oxidase (LOX), which manifests as an increase in fibrillar collagen solubility and decreased levels of LOX-mediated fibrillar collagen crosslinking. We show that these changes are indirectly mediated by miR-29, a major regulator of ECM proteins and LOX, as miR-29 expression is increased in the TSP2 KO. Altogether, these findings indicate that TSP2 contributes to ECM production and assembly by regulating miR-29 and LOX.
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Affiliation(s)
- N E Calabro
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - A Barrett
- Department of Biochemistry and Molecular Genetics, Biological Mass Spectrometry Facility, University of Colorado Denver, Aurora, CO 80045, USA
| | - A Chamorro-Jorganes
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Comparative Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | - S Tam
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - N J Kristofik
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT 06511, USA
| | - Hao Xing
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT 06511, USA
| | - Ayomiposi M Loye
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT 06511, USA
| | - W C Sessa
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - K Hansen
- Department of Biochemistry and Molecular Genetics, Biological Mass Spectrometry Facility, University of Colorado Denver, Aurora, CO 80045, USA
| | - T R Kyriakides
- Interdepartmental Program in Vascular Biology and Therapeutics, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA; Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT 06511, USA.
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670
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Hou J, Chen L, Liu Z, Li J, Yang J, Zhong A, Zhou M, Sun Y, Guo L, Yang Y, Sun J, Wang Z. Sustained release of N-acetylcysteine by sandwich structured polycaprolactone/collagen scaffolds for wound healing. J Biomed Mater Res A 2019; 107:1414-1424. [PMID: 30737888 DOI: 10.1002/jbm.a.36656] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/17/2019] [Accepted: 02/04/2019] [Indexed: 12/24/2022]
Abstract
PCL (poly-caprolactone) nanofibers have good biocompatibility and high porosity, which are usually utilized for application in wound dressings. However, wound healing could be hindered by the overproduction of reactive oxygen species (ROS) and different factors. Pure nanofibers cannot satisfy these requirements of wound healing. N-acetylcysteine (NAC), as an antioxidant, meets the requirements for wound healing by resisting the overproduction of ROS and by promoting angiogenesis and maturation of the epidermis. In this study, we prepared a sandwich structured PCL-Col/NAC scaffold using the molding method, which consisted of PCL nanofibers at the core and NAC-loaded collagen on both sides. The hydroscopicity and tensile modulus of PCL-Col/NAC scaffolds showed best performance of these properties among groups. Meanwhile, the drug release profiles of PCL-Col/NAC scaffolds were investigated using the HPLC method and the results suggested a sustained drug release of NAC for PCL-Col/NAC scaffolds. In addition, PCL-Col/NAC scaffolds presented better properties than the control groups in cell migration and proliferation. The in vivo wound healing therapy effect was studied using an oval (2 × 1 cm) full-thickness skin defect wound model for SD rats. After 21 days, gross view and histological analysis showed a favorable beneficial therapeutic effect as well as better epidermal maturation compared with the control groups. CD31 immunohistology results revealed relatively more new vessels in the PCL-Col/NAC group than the control groups. This study developed novel PCL-Col/NAC scaffolds with an excellent hydroscopicity, tensile modulus and the ability to promote epidermal maturation and angiogenesis, demonstrating its promising potential in wound healing treatment. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.
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Affiliation(s)
- Jinfei Hou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lifeng Chen
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhirong Liu
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jialun Li
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jie Yang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Aimei Zhong
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Muran Zhou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yang Sun
- Department of Medical Records Management and Statistics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Liang Guo
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yanqing Yang
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan, 430060, China
| | - Jiaming Sun
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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671
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Sveen LR, Timmerhaus G, Krasnov A, Takle H, Handeland S, Ytteborg E. Wound healing in post-smolt Atlantic salmon (Salmo salar L.). Sci Rep 2019; 9:3565. [PMID: 30837496 PMCID: PMC6400935 DOI: 10.1038/s41598-019-39080-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 01/15/2019] [Indexed: 12/17/2022] Open
Abstract
Skin biopsies (5 mm) taken from behind the dorsal fin on Atlantic salmon post-smolts were followed over a 2 month period. The healing process was dominated by hemostasis, acute inflammation, and epidermal repair the first 14 days post wounding (dpw), as shown through imaging, histological evaluation, and transcriptomics. Most of the immune genes showed decreased expression after two weeks, approaching the levels of intact skin, as also reflected in sections where reduced inflammation in the wound bed was observed. Transcriptional events suggest recruitment of lymphocytes to the wound site during the acute phase, with activation of humoral responses from 14 dpw and onward. From the histology, a more adherent mucus was observed that correlated with altered transcription of glycosyltransferases. This may indicate different properties and functions of the mucus during the wound healing process. Wound contraction started between 14 and 36 dpw. The occurrence of these events was concurrent with granulation tissue formation, melanocyte migration and up-regulation of genes involved in extracellular matrix formation. The presented description of the wound healing processes in Atlantic salmon gives insight into comparative ulcerative biology in mammals and fish and provides both novel and updated knowledge that can be applied for improved best operational practices for fish welfare in aquaculture.
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Affiliation(s)
- Lene Rydal Sveen
- University of Bergen, Postboks 7800, 5020, Bergen, Norway. .,Nofima, Osloveien 1, 1430, Ås, Norway.
| | | | | | - Harald Takle
- Cermaq Group AS, Dronning Eufemias gate 16,0102, Oslo, Norway
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672
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O'Rourke BP, Kramer AH, Cao LL, Inayathullah M, Guzik H, Rajadas J, Nosanchuk JD, Sharp DJ. Fidgetin-Like 2 siRNA Enhances the Wound Healing Capability of a Surfactant Polymer Dressing. Adv Wound Care (New Rochelle) 2019; 8:91-100. [PMID: 30911440 PMCID: PMC6430983 DOI: 10.1089/wound.2018.0827] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/07/2018] [Indexed: 02/02/2023] Open
Abstract
Microtubules (MTs) are intracellular polymers that provide structure to the cell, serve as railways for intracellular transport, and regulate many cellular activities, including cell migration. The dynamicity and function of the MT cytoskeleton are determined in large part by its regulatory proteins, including the recently discovered MT severing enzyme Fidgetin-like 2 (FL2). Downregulation of FL2 expression with small interfering RNA (siRNA) results in a more than twofold increase in cell migration rate in vitro as well as translates into improved wound-healing outcomes in in vivo mouse models. Here we utilized a commercially available surfactant polymer dressing (SPD) as a vehicle to deliver FL2 siRNA. To this end we incorporated collagen microparticles containing FL2 siRNA into SPD (SPD-FL2-siRNA) for direct application to the injury site. Topical application of SPD-FL2 siRNA to murine models of full-thickness excision wounds and full-thickness burn wounds resulted in significant improvements in the rate and quality of wound healing, as measured clinically and histologically, compared with controls. Wound healing occurred more rapidly and with high fidelity, resulting in properly organized collagen substructure. Taken together, these findings indicate that the incorporation of FL2 siRNA into existing treatment options is a promising avenue to improve wound outcomes.
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Affiliation(s)
| | - Adam H. Kramer
- Physiology and Biophysics, and Albert Einstein College of Medicine, Bronx, New York
| | - Longyue L. Cao
- Department of Medicine, Children's Hospital Boston, Boston, Massachusetts
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Mohammed Inayathullah
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University, Palo Alto, California
| | - Hillary Guzik
- Analytical Imaging Facility, Albert Einstein College of Medicine, Bronx, New York
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University, Palo Alto, California
| | - Joshua D. Nosanchuk
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - David J. Sharp
- MicroCures, Inc., Research and Development, Bronx, New York
- Physiology and Biophysics, and Albert Einstein College of Medicine, Bronx, New York
- Department of Ophthalmology and Visual Sciences, and Albert Einstein College of Medicine, Bronx, New York
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York
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673
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Gholipourmalekabadi M, Khosravimelal S, Nokhbedehghan Z, Sameni M, Jajarmi V, Urbanska AM, Mirzaei H, Salimi M, Chauhan NPS, Mobaraki M, Reis RL, Samadikuchaksaraei A, Kundu SC. Modulation of Hypertrophic Scar Formation Using Amniotic Membrane/Electrospun Silk Fibroin Bilayer Membrane in a Rabbit Ear Model. ACS Biomater Sci Eng 2019; 5:1487-1496. [PMID: 33405623 DOI: 10.1021/acsbiomaterials.8b01521] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hypertrophic scarring is a dermal disorder resulting from collagen and other extra cellular matrix protein depositions following the deep trauma, severe burn injury, and surgery incisions. A variety of therapeutic procedures are currently available, however, achieving an ideal treatment method remains a challenge. In our recently published report, a 3D bilayered decellularized human amniotic membrane/electrospun silk fibroin membrane was fabricated and characterized for regenerative medical applications. To obtain a solid bind between two layers, the samples were immersed in 70% ethanol. In this study, the effects of amniotic membrane/electrospun silk fibroin on minimizing the postinjury hypertrophic scar formation were determined in the rabbit ear model. In vivo experiments were carried out to assess the bilayer membrane characteristics on full thickness hypertrophic scar at days 28 and 50 postimplantations. A significant decrease in collagen deposition and expression and increased expression and deposition of MMP1 in the wound bed were observed on the wounds dressed with bilayered membrane when compared to the amniotic membrane alone and controls (wound with no implant). The current study shows that our fabricated construct has potential as an efficient antiscarring wound dressing material and may also serve for the subsequent soft tissue engineering needs.
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Affiliation(s)
| | | | | | | | | | - Aleksandra M Urbanska
- Molecular Pharmacology Department, Memorial Sloan Kettering Cancer Center, New York, NY 10065 United States
| | - Hadi Mirzaei
- School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | | | | | - Mohammadmahdi Mobaraki
- Biomaterials Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Rui L Reis
- 3Bs Research Group, I3Bs-Institute on Biomaterials, biodegradables and Biomimetics. Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Barco, Guimaraes 4805-017, Portugal
| | | | - Subhas C Kundu
- 3Bs Research Group, I3Bs-Institute on Biomaterials, biodegradables and Biomimetics. Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Barco, Guimaraes 4805-017, Portugal
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674
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Chiarelli N, Carini G, Zoppi N, Ritelli M, Colombi M. Molecular insights in the pathogenesis of classical Ehlers-Danlos syndrome from transcriptome-wide expression profiling of patients' skin fibroblasts. PLoS One 2019; 14:e0211647. [PMID: 30716086 PMCID: PMC6361458 DOI: 10.1371/journal.pone.0211647] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 01/17/2019] [Indexed: 12/16/2022] Open
Abstract
Classical Ehlers-Danlos syndrome (cEDS) is a dominant inherited connective tissue disorder mainly caused by mutations in the COL5A1 and COL5A2 genes encoding type V collagen (COLLV), which is a fibrillar COLL widely distributed in a variety of connective tissues. cEDS patients suffer from skin hyperextensibility, abnormal wound healing/atrophic scars, and joint hypermobility. Most of the causative variants result in a non-functional COL5A1 allele and COLLV haploinsufficiency, whilst COL5A2 mutations affect its structural integrity. To shed light into disease mechanisms involved in cEDS, we performed gene expression profiling in skin fibroblasts from four patients harboring haploinsufficient and structural mutations in both disease genes. Transcriptome profiling revealed significant changes in the expression levels of different extracellular matrix (ECM)-related genes, such as SPP1, POSTN, EDIL3, IGFBP2, and C3, which encode both matricellular and soluble proteins that are mainly involved in cell proliferation and migration, and cutaneous wound healing. These gene expression changes are consistent with our previous protein findings on in vitro fibroblasts from other cEDS patients, which exhibited reduced migration and poor wound repair owing to COLLV disorganization, altered deposition of fibronectin into ECM, and an abnormal integrin pattern. Microarray analysis also indicated the decreased expression of DNAJB7, VIPAS39, CCPG1, ATG10, SVIP, which encode molecular chaperones facilitating protein folding, enzymes regulating post-Golgi COLLs processing, and proteins acting as cargo receptors required for endoplasmic reticulum (ER) proteostasis and implicated in the autophagy process. Patients’ cells also showed altered mRNA levels of many cell cycle regulating genes including CCNE2, KIF4A, MKI67, DTL, and DDIAS. Protein studies showed that aberrant COLLV expression causes the disassembly of itself and many structural ECM constituents including COLLI, COLLIII, fibronectin, and fibrillins. Our findings provide the first molecular evidence of significant gene expression changes in cEDS skin fibroblasts highlighting that defective ECM remodeling, ER homeostasis and autophagy might play a role in the pathogenesis of this connective tissue disorder.
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Affiliation(s)
- Nicola Chiarelli
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Giulia Carini
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Nicoletta Zoppi
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Marco Ritelli
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Marina Colombi
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
- * E-mail:
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675
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El Masry MS, Chaffee S, Das Ghatak P, Mathew-Steiner SS, Das A, Higuita-Castro N, Roy S, Anani RA, Sen CK. Stabilized collagen matrix dressing improves wound macrophage function and epithelialization. FASEB J 2019; 33:2144-2155. [PMID: 30260708 PMCID: PMC6338656 DOI: 10.1096/fj.201800352r] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/27/2018] [Indexed: 12/26/2022]
Abstract
Decellularized matrices of biologic tissue have performed well as wound care dressings. Extracellular matrix-based dressings are subject to rapid degradation by excessive protease activity at the wound environment. Stabilized, acellular, equine pericardial collagen matrix (sPCM) wound care dressing is flexible cross-linked proteolytic enzyme degradation resistant. sPCM was structurally characterized utilizing scanning electron and atomic force microscopy. In murine excisional wounds, sPCM was effective in mounting an acute inflammatory response. Postwound inflammation resolved rapidly, as indicated by elevated levels of IL-10, arginase-1, and VEGF, and lowering of IL-1β and TNF-α. sPCM induced antimicrobial proteins S100A9 and β-defensin-1 in keratinocytes. Adherence of Pseudomonas aeruginosa and Staphylococcus aureus on sPCM pre-exposed to host immune cells in vivo was inhibited. Excisional wounds dressed with sPCM showed complete closure at d 14, while control wounds remained open. sPCM accelerated wound re-epithelialization. sPCM not only accelerated wound closure but also improved the quality of healing by increased collagen deposition and maturation. Thus, sPCM is capable of presenting scaffold functionality during the course of wound healing. In addition to inducing endogenous antimicrobial defense systems, the dressing itself has properties that minimize biofilm formation. It mounts robust inflammation, a process that rapidly resolves, making way for wound healing to advance.-El Masry, M. S., Chaffee, S., Das Ghatak, P., Mathew-Steiner, S. S., Das, A., Higuita-Castro, N., Roy, S., Anani, R. A., Sen, C. K. Stabilized collagen matrix dressing improves wound macrophage function and epithelialization.
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Affiliation(s)
- Mohamed S. El Masry
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
- Department of Plastic and Reconstructive Surgery, Zagazig University, Zagazig, Egypt
| | - Scott Chaffee
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Piya Das Ghatak
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Shomita S. Mathew-Steiner
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Amitava Das
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Natalia Higuita-Castro
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Sashwati Roy
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
| | - Raafat A. Anani
- Department of Plastic and Reconstructive Surgery, Zagazig University, Zagazig, Egypt
| | - Chandan K. Sen
- Department of Surgery, Indiana University Health (IUH) Comprehensive Wound Center, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Surgery, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA
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676
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Barzegari AA, Hashemzaei M, ASlihematti AR. Positive Effects of Spray-Dried Streptococcus thermophilus on Healing of Second-Degree Burn Wounds in Wistar Rats. MEDICAL LABORATORY JOURNAL 2019. [DOI: 10.29252/mlj.13.2.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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677
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Study of 3D-printed chitosan scaffold features after different post-printing gelation processes. Sci Rep 2019; 9:362. [PMID: 30674919 PMCID: PMC6344587 DOI: 10.1038/s41598-018-36613-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 10/22/2018] [Indexed: 01/05/2023] Open
Abstract
3D biomaterial manufacturing strategies show an extraordinary driving force for the development of innovative therapies in the tissue engineering field. Here, the behaviour of 3D printed chitosan (CH)-based scaffolds was explored as a function of the post-printing gelation process. To this purpose, gel forming properties of different media were tested on their capability to retain 3D structure, water content, mechanical resistance and surface/internal porosity. Three different gelation media (i.e. KOH 1.5 M, Na2CO3 1.5 M, ammonia vapours) were selected and the 3D CH scaffolds were tested in terms of biocompatibility toward fibroblast as skin associated human cell line.
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678
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Gentle cyclic straining of human fibroblasts on electrospun scaffolds enhances their regenerative potential. Acta Biomater 2019; 84:159-168. [PMID: 30471477 DOI: 10.1016/j.actbio.2018.11.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 11/18/2018] [Accepted: 11/20/2018] [Indexed: 12/17/2022]
Abstract
The extracellular matrix of fascia-like tissues is a resilient network of collagenous fibers that withstand the forces of daily life. When overstretched, the matrix may tear, with serious consequences like pelvic organ prolapse (POP). Synthetic implants can provide mechanical support and evoke a host response that induces new matrix production, thus reinforcing the fascia. However, there is considerable risk of scar formation and tissue contraction which result in severe complications. Matrix producing fibroblasts are both mechanosensitive and contractile; their behavior depends on the implant's surface texture and mechanical straining. Here we investigate the effect of both in a newly-designed experimental setting. Electrospun scaffolds of Nylon and PLGA/PCL and a non-porous PLGA/PCL film were clamped like a drumhead and seeded with fibroblasts of POP patients. Upon confluency, scaffolds were cyclically strained for 24 or 72 h at 10% and 0.2 Hz, mimicking gentle breathing. Non-loading condition was control. Strained fibroblasts loosened their actin-fibers, thereby preventing myofibroblastic differentiation. Mechanical loading upregulated genes involved in matrix synthesis (collagen I, III, V and elastin), matrix remodeling (α-SMA, TGF-β1, MMP-2) and inflammation (COX-2, TNF-α, IL8, IL1-β). Collagen genes were expressed earlier under mechanical loading and the ratio of I/III collagen increased. Matrix synthesis and remodeling were stronger on the electrospun scaffolds, while inflammation was more prominent on the non-porous film. Our findings indicate that mechanical straining enhances the regenerative potential of fibroblasts for the regeneration of fascia-type tissues and limit the risk of scar tissue formation. These effects are stronger on an electrospun texture. STATEMENT OF SIGNIFICANCE: Pelvic organ prolapsed is a dysfunctional disease in female pelvic floor that can reduce the quality of life women. Currently, trans-vaginal knitted meshes are used to anatomically correct the dysfunctional tissues. However, the meshes can create sever adverse complications in some patients (e.g. chronic pain) in longer-term. As an alternative, we developed nanofibrous matrices by electrospinning based on different materials. We designed an in-vitro culture system and subjected cell-seeded matrices to cyclic mechanical loading. Results revealed that gentle straining of POP-cells on electrospun matrices, advances their regenerative potential at morphological and gene expression levels. Our findings, provide a proof-of-concept for using electrospun matrices as an alternative implant for pelvic floor repair, given that the parameters are designed efficiently and safely.
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679
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Maarof M, Lokanathan Y, Ruszymah HI, Saim A, Chowdhury SR. Proteomic Analysis of Human Dermal Fibroblast Conditioned Medium (DFCM). Protein J 2019; 37:589-607. [PMID: 30343346 DOI: 10.1007/s10930-018-9800-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Growth factors and extracellular matrix (ECM) proteins are involved in wound healing. Human dermal fibroblasts secrete wound-healing mediators in culture medium known as dermal fibroblast conditioned medium (DFCM). However, the composition and concentration of the secreted proteins differ with culture conditions and environmental factors. We cultured human skin fibroblasts in vitro using serum-free keratinocyte-specific media (EpiLife™ Medium [KM1] and defined keratinocyte serum-free medium [KM2]) and serum-free fibroblast-specific medium (FM) to obtain DFCM-KM1, DFCM-KM2 and DFCM-FM, respectively. We identified and compared their proteomic profiles using bicinchoninic acid assay (BCA), 1-dimensional sodium dodecyl sulphate-polyacrylamide gel electrophoresis (1D SDS-PAGE), enzyme-linked immunosorbent assay (ELISA), matrix-assisted laser desorption ionisation-time-of-flight mass spectrometry (MALDI-TOF/TOF MS/MS) and liquid chromatography MS (LC-MS/MS). DFCM-KM1 and DFCM-KM2 had higher protein concentrations than DFCM-FM but not statistically significant. MALDI-TOF/TOF MS identified the presence of fibronectin, serotransferrin, serpin and serum albumin. LC-MS/MS and bioinformatics analysis identified 59, 46 and 58 secreted proteins in DFCM-KM1, DFCM-KM2 and DFCM-FM, respectively. The most significant biological processes identified in gene ontology were cellular process, metabolic process, growth and biological regulation. STRING® analysis showed that most secretory proteins in the DFCMs were associated with biological processes (e.g. wound healing and ECM organisation), molecular function (e.g. ECM binding) and cellular component (e.g. extracellular space). ELISA confirmed the presence of fibronectin and collagen in the DFCMs. In conclusion, DFCM secretory proteins are involved in cell adhesion, attachment, proliferation and migration, which were demonstrated to have potential wound-healing effects by in vitro and in vivo studies.
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Affiliation(s)
- Manira Maarof
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaccob Latiff, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia
| | - Yogeswaran Lokanathan
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaccob Latiff, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia
| | - Hj Idrus Ruszymah
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaccob Latiff, Cheras, 56000, Kuala Lumpur, Malaysia
| | - Aminuddin Saim
- Ear Nose & Throat Consultant Clinic, Ampang Puteri Specialist Hospital, 1 Jalan Mamanda 9, 68000, Ampang, Selangor, Malaysia
| | - Shiplu Roy Chowdhury
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaccob Latiff, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia.
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680
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681
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Duration of Scar Maturation: Retrospective Analyses of 361 Hypertrophic Scars Over 5 Years. Adv Skin Wound Care 2019; 32:26-34. [DOI: 10.1097/01.asw.0000547415.38888.c4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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682
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Govindaraju P, Todd L, Shetye S, Monslow J, Puré E. CD44-dependent inflammation, fibrogenesis, and collagenolysis regulates extracellular matrix remodeling and tensile strength during cutaneous wound healing. Matrix Biol 2019; 75-76:314-330. [PMID: 29894820 PMCID: PMC6286871 DOI: 10.1016/j.matbio.2018.06.004] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/21/2018] [Accepted: 06/08/2018] [Indexed: 12/19/2022]
Abstract
Cutaneous wound healing consists of three main phases: inflammation, re-epithelialization, and tissue remodeling. During normal wound healing, these processes are tightly regulated to allow restoration of skin function and biomechanics. In many instances, healing leads to an excess accumulation of fibrillar collagen (the principal protein found in the extracellular matrix - ECM), and the formation of scar tissue, which has compromised biomechanics, tested using ramp to failure tests, compared to normal skin (Corr and Hart, 2013 [1]). Alterations in collagen accumulation and architecture have been attributed to the reduced tensile strength found in scar tissue (Brenda et al., 1999; Eleswarapu et al., 2011). Defining mechanisms that govern cellular functionality and ECM remodeling are vital to understanding normal versus pathological healing and developing approaches to prevent scarring. CD44 is a cell surface adhesion receptor expressed on nearly all cell types present in dermis. Although CD44 has been implicated in an array of inflammatory and fibrotic processes such as leukocyte recruitment, T-cell extravasation, and hyaluronic acid (the principal glycosaminoglycan found in the ECM) metabolism, the role of CD44 in cutaneous wound healing and scarring remains unknown. We demonstrate that in an excisional biopsy punch wound healing model, CD44-null mice have increased inflammatory and reduced fibrogenic responses during early phases of wound healing. At wound closure, CD44-null mice exhibit reduced collagen degradation leading to increased accumulation of fibrillar collagen, which persists after wound closure leading to reduced tensile strength resulting in a more severe scarring phenotype compared to WT mice. These data indicate that CD44 plays a previously unknown role in fibrillar collagen accumulation and wound healing during the injury response.
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Affiliation(s)
- Priya Govindaraju
- Department of Biomedical Sciences of the University of Pennsylvania, Philadelphia, PA, United States of America; Pharmacology Graduate Group of the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Leslie Todd
- Department of Biomedical Sciences of the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Snehal Shetye
- McKay Orthopaedic Research Laboratory of the University of Pennsylvania, Philadelphia, PA, United States of America
| | - James Monslow
- Department of Biomedical Sciences of the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Ellen Puré
- Department of Biomedical Sciences of the University of Pennsylvania, Philadelphia, PA, United States of America; Pharmacology Graduate Group of the University of Pennsylvania, Philadelphia, PA, United States of America.
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683
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Gonzalez Rodriguez A, Schroeder ME, Walker CJ, Anseth KS. FGF-2 inhibits contractile properties of valvular interstitial cell myofibroblasts encapsulated in 3D MMP-degradable hydrogels. APL Bioeng 2018; 2:046104. [PMID: 31069326 PMCID: PMC6481727 DOI: 10.1063/1.5042430] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/08/2018] [Indexed: 02/06/2023] Open
Abstract
Valvular interstitial cells (VICs) are responsible for the maintenance of the extracellular matrix in heart valve leaflets and, in response to injury, activate from a quiescent fibroblast to a wound healing myofibroblast phenotype. Under normal conditions, myofibroblast activation is transient, but the chronic presence of activated VICs can lead to valve diseases, such as fibrotic aortic valve stenosis, for which non-surgical treatments remain elusive. We monitored the porcine VIC response to exogenously delivered fibroblast growth factor 2 (FGF-2; 100 ng/ml), transforming growth factor beta 1 (TGF-β1; 5 ng/ml), or a combination of the two while cultured within 3D matrix metalloproteinase (MMP)-degradable 8-arm 40 kDa poly(ethylene glycol) hydrogels that mimic aspects of the aortic valve. Here, we aimed to investigate VIC myofibroblast activation and subsequent contraction or the reparative wound healing response. To this end, VIC morphology, proliferation, gene expression related to the myofibroblast phenotype [alpha smooth muscle actin (α-SMA) and connective tissue growth factor (CTGF)] and matrix remodeling [collagens (COL1A1 and COL3) and MMP1], and contraction assays were used to quantify the cell response. Treatment with FGF-2 resulted in increased cellular proliferation while reducing the myofibroblast phenotype, as seen by decreased expression of CTGF and α-SMA, and reduced contraction relative to untreated control, suggesting that FGF-2 encourages a reparative phenotype, even in the presence of TGF-β1. TGF-β1 treatment predictably led to an increased proportion of VICs exhibiting the myofibroblast phenotype, indicated by the presence of α-SMA, increased gene expression indicative of matrix remodeling, and bulk contraction of the hydrogels. Functional contraction assays and biomechanical analyses were performed on VIC encapsulated hydrogels and porcine aortic valve tissue explants to validate these findings.
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684
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Antioxidant and anti-inflammatory properties of Prosopis cineraria based phenolic rich ointment in wound healing. Biomed Pharmacother 2018; 108:1572-1583. [DOI: 10.1016/j.biopha.2018.09.180] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/15/2018] [Accepted: 09/30/2018] [Indexed: 11/18/2022] Open
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685
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Massoumi H, Nourmohammadi J, Marvi MS, Moztarzadeh F. Comparative study of the properties of sericin-gelatin nanofibrous wound dressing containing halloysite nanotubes loaded with zinc and copper ions. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1534115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hamed Massoumi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Jhamak Nourmohammadi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Mehri Sadat Marvi
- Faculty of New Sciences and Technologies, Department of Life Science Engineering, University of Tehran, Tehran, Iran
| | - Fathollah Moztarzadeh
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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686
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Shook BA, Wasko RR, Rivera-Gonzalez GC, Salazar-Gatzimas E, López-Giráldez F, Dash BC, Muñoz-Rojas AR, Aultman KD, Zwick RK, Lei V, Arbiser JL, Miller-Jensen K, Clark DA, Hsia HC, Horsley V. Myofibroblast proliferation and heterogeneity are supported by macrophages during skin repair. Science 2018; 362:eaar2971. [PMID: 30467144 PMCID: PMC6684198 DOI: 10.1126/science.aar2971] [Citation(s) in RCA: 292] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 07/20/2018] [Accepted: 10/04/2018] [Indexed: 12/20/2022]
Abstract
During tissue repair, myofibroblasts produce extracellular matrix (ECM) molecules for tissue resilience and strength. Altered ECM deposition can lead to tissue dysfunction and disease. Identification of distinct myofibroblast subsets is necessary to develop treatments for these disorders. We analyzed profibrotic cells during mouse skin wound healing, fibrosis, and aging and identified distinct subpopulations of myofibroblasts, including adipocyte precursors (APs). Multiple mouse models and transplantation assays demonstrate that proliferation of APs but not other myofibroblasts is activated by CD301b-expressing macrophages through insulin-like growth factor 1 and platelet-derived growth factor C. With age, wound bed APs and differential gene expression between myofibroblast subsets are reduced. Our findings identify multiple fibrotic cell populations and suggest that the environment dictates functional myofibroblast heterogeneity, which is driven by fibroblast-immune interactions after wounding.
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Affiliation(s)
- Brett A Shook
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.
| | - Renee R Wasko
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
| | | | | | | | - Biraja C Dash
- Department of Surgery (Plastic), Yale School of Medicine, New Haven, CT 06510, USA
| | | | - Krystal D Aultman
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
| | - Rachel K Zwick
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
| | - Vivian Lei
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
| | - Jack L Arbiser
- Department of Dermatology, Atlanta Veterans Administration Health Center, Emory University, Atlanta, GA 30322, USA
| | - Kathryn Miller-Jensen
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT 06511, USA
| | - Damon A Clark
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06511, USA
| | - Henry C Hsia
- Department of Surgery (Plastic), Yale School of Medicine, New Haven, CT 06510, USA
| | - Valerie Horsley
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.
- Department of Dermatology, Yale University, New Haven, CT 06511, USA
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687
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Yeo DC, Wiraja C, Miao Q, Ning X, Pu K, Xu C. Anti-Scarring Drug Screening with Near-Infrared Molecular Probes Targeting Fibroblast Activation Protein-α. ACS APPLIED BIO MATERIALS 2018; 1:2054-2061. [DOI: 10.1021/acsabm.8b00528] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David C. Yeo
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Christian Wiraja
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Qingqing Miao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Xiaoyu Ning
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
- NTU Institute for Health Technologies, Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
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688
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Role of ATP during the initiation of microvascularization: acceleration of an autocrine sensing mechanism facilitating chemotaxis by inorganic polyphosphate. Biochem J 2018; 475:3255-3273. [PMID: 30242064 DOI: 10.1042/bcj20180535] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/18/2018] [Accepted: 09/18/2018] [Indexed: 12/21/2022]
Abstract
The in vitro tube formation assay with human umbilical vein endothelial cells (HUVEC) was applied to identify the extra- and intracellular sources of metabolic energy/ATP required for cell migration during the initial stage of microvascularization. Extracellularly, the physiological energy-rich polymer, inorganic polyphosphate (polyP), applied as biomimetic amorphous calcium polyP microparticles (Ca-polyP-MP), is functioning as a substrate for ATP generation most likely via the combined action of the alkaline phosphatase (ALP) and the adenylate kinase (AK). The linear Ca-polyP-MP with a size of 40 phosphate units, close to the polyP in the acidocalcisomes in the blood platelets, were found to increase endothelial cell tube formation, as well as the intracellular ATP levels. Depletion of extracellular ATP with apyrase suppressed tube formation during the initial incubation period. Inhibition experiments revealed that inhibitors (levamisole and Ap5A) of the enzymes involved in extracellular ATP generation strongly reduce the Ca-polyP-MP-induced tube formation. The stimulatory effect of Ca-polyP-MP was also diminished by the glycolysis inhibitor oxamate and trifluoperazine which blocks endocytosis, as well as by MRS2211, an antagonist of the P2Y13 receptor. Oligomycin, an inhibitor of the mitochondrial F0F1-ATP synthase, displayed no effect at lower concentrations on tube formation. Electron microscopic data revealed that after cellular uptake, the Ca-polyP-MP accumulate close to the cell membrane. We conclude that in HUVEC exposed to polyP, ATP is formed extracellularly via the coupled ALP-AK reaction, and intracellularly during glycolysis. The results suggest an autocrine signaling pathway of ATP with polyP as an extracellular store of metabolic energy for endothelial cell migration during the initial vascularization process.
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689
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Vijayakumar V, Samal SK, Mohanty S, Nayak SK. Recent advancements in biopolymer and metal nanoparticle-based materials in diabetic wound healing management. Int J Biol Macromol 2018; 122:137-148. [PMID: 30342131 DOI: 10.1016/j.ijbiomac.2018.10.120] [Citation(s) in RCA: 185] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/26/2018] [Accepted: 10/14/2018] [Indexed: 01/13/2023]
Abstract
Currently, diabetes mellitus (DM) accelerated diabetic foot ulcer (DFU) remains vivacious health problem related with delayed healing and high amputation rates which leads to enormous clinical obligation. Keeping in view of the foregoing, researchers have been made in their efforts to develop novel materials which accelerate delayed wound healing in the diabetic patient and reduce the adversative influences of DFUs. The most prominent materials used for the wound healing application have biocompatibility, low cytotoxicity, excellent biodegradable properties, and antimicrobial activity properties. Utilization of nanoparticles has emerged as a protruding scientific and technological revolution in controlling DFUs. Biopolymers in combination with bioactive nanoparticles having antimicrobial, antibacterial, and anti-inflammatory properties have great potential in wound care to enhance the healing process of diabetic wound infectious. Combination of antibacterial nanoparticles like silver nanoparticles (AgNPs), gold nanoparticles (AuNPs), copper nanoparticles (CuNPs) etc. with polymeric matrix could efficiently inhibit bacterial growth and at the same time fastens the healing process of a wound. This review briefed the recent development of different natural polymers and antibacterial nanoparticles to mitigate the diabetes mellitus based DFU.
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Affiliation(s)
- Veena Vijayakumar
- School for Advanced Research in Polymers (SARP)-Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology (CIPET), B-25, CNI Complex, Patia, Bhubaneswar, Odisha 751024, India
| | - Sushanta K Samal
- School for Advanced Research in Polymers (SARP)-Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology (CIPET), B-25, CNI Complex, Patia, Bhubaneswar, Odisha 751024, India.
| | - Smita Mohanty
- School for Advanced Research in Polymers (SARP)-Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology (CIPET), B-25, CNI Complex, Patia, Bhubaneswar, Odisha 751024, India
| | - Sanjay K Nayak
- School for Advanced Research in Polymers (SARP)-Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology (CIPET), B-25, CNI Complex, Patia, Bhubaneswar, Odisha 751024, India
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690
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Ridiandries A, Tan JTM, Bursill CA. The Role of Chemokines in Wound Healing. Int J Mol Sci 2018; 19:ijms19103217. [PMID: 30340330 PMCID: PMC6214117 DOI: 10.3390/ijms19103217] [Citation(s) in RCA: 261] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 10/14/2018] [Accepted: 10/15/2018] [Indexed: 12/15/2022] Open
Abstract
Wound healing is a multistep process with four overlapping but distinct stages: hemostasis, inflammation, proliferation, and remodeling. An alteration at any stage may lead to the development of chronic non-healing wounds or excessive scar formation. Impaired wound healing presents a significant health and economic burden to millions of individuals worldwide, with diabetes mellitus and aging being major risk factors. Ongoing understanding of the mechanisms that underly wound healing is required for the development of new and improved therapies that increase repair. Chemokines are key regulators of the wound healing process. They are involved in the promotion and inhibition of angiogenesis and the recruitment of inflammatory cells, which release growth factors and cytokines to facilitate the wound healing process. Preclinical research studies in mice show that the administration of CCL2, CCL21, CXCL12, and a CXCR4 antagonist as well as broad-spectrum inhibition of the CC-chemokine class improve the wound healing process. The focus of this review is to highlight the contributions of chemokines during each stage of wound healing and to discuss the related molecular pathologies in complex and chronic non-healing wounds. We explore the therapeutic potential of targeting chemokines as a novel approach to overcome the debilitating effects of impaired wound healing.
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Affiliation(s)
- Anisyah Ridiandries
- Department of Cardiology, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia.
- Sydney Medical School Northern, University of Sydney, Sydney, NSW 2006, Australia.
| | - Joanne T M Tan
- Heart Health Theme, South Australian Health and Medical Research Institute, North Terrace, Adelaide, SA 5000, Australia.
- Adelaide Medical School, Faculty of Health & Medical Sciences, University of Adelaide, Adelaide, SA 5000, Australia.
| | - Christina A Bursill
- Heart Health Theme, South Australian Health and Medical Research Institute, North Terrace, Adelaide, SA 5000, Australia.
- Adelaide Medical School, Faculty of Health & Medical Sciences, University of Adelaide, Adelaide, SA 5000, Australia.
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691
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Role of photobiomodulation on the activation of the Smad pathway via TGF-β in wound healing. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:138-144. [PMID: 30343208 DOI: 10.1016/j.jphotobiol.2018.10.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/31/2018] [Accepted: 10/09/2018] [Indexed: 12/30/2022]
Abstract
Wound healing is an essential process in which the separated or destroyed tissue attempts to restore itself into its normal state. In some instances, healing is prolonged and remains stagnant in the inflammatory phase, and is referred to as a chronic wound. At a cellular and molecular level, many factors are required during the process of successful wound healing, such as cytokines, polypeptide growth factors and components of the extracellular matrix (ECM). Transforming growth factor-beta (TGF-β) is considered as one of the essential growth factors in wound healing. Working through the Smad pathway, it is the main inducer of fibroblast differentiation which is essential for wound healing. Photobiomodulation (PBM) shows significant advantages in wound healing, and may stimulate cellular processes and tissue regeneration that results in an increase in growth factors and a decrease in inflammatory cytokines. Moreover, it leads to enhanced cell proliferation, migration, angiogenesis, and increased adenosine triphosphate (ATP) and cytochrome C oxidase (CCO) activity. In this review paper, we discuss the effects of PBM and its role on the activation of the TGF-β/Smad pathway in the process of wound healing.
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692
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Ebnerasuly F, Hajebrahimi Z, Tabaie SM, Darbouy M. Simulated Microgravity Condition Alters the Gene Expression of some ECM and Adhesion Molecules in Adipose Derived Stem Cells. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2018; 7:146-157. [PMID: 31565646 PMCID: PMC6744620 DOI: 10.22088/ijmcm.bums.7.3.146] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 09/27/2018] [Indexed: 01/05/2023]
Abstract
Adipose- derived stem cells (ADSCs) are widely used for tissue engineering and regenerative medicine. The beneficial effects of ADSCs on wound healing have already been reported. Remodeling of extracellular matrix (ECM) is the most important physiological event during wound healing. ECM is sensitive to mechanical stresses and the expression of its components can be therefore influenced. The aim of this study was to investigate the effect of simulated microgravity on gene expression of some ECM and adhesion molecules in human ADSCs. After isolation and characterization of ADSCs, cells were exposed to simulated microgravity for 1, 3 and 7 days. Real-time PCR, fluorescence immunocytochemistry, and MTT assay were performed to evaluate the alterations of integrin subunit beta 1 (ITGB1), collagen type 3 (ColIII), matrix metalloproteinase-1 (MMP1), CD44, fibrillin (FBN1), vimentin (VIM) genes, and ColIII protein levels as well as cells viability. Microgravity simulation increased the expression of ITGB1, ColIII, MMP1, and CD44 and declined the expression of FBN1 and VIM genes. ColIII protein levels also increased. There were no significant changes in the viability of cells cultured in microgravity. Since the high expression of ECM components is known as one of the fibroblast markers, our data suggest that pretreatment of ADSCs by simulated microgravity may increase their differentiation capacity towards fibroblastic cells. Microgravity had not adversely affected the viability of ADSCs, and it is likely to be used alone or in combination with biochemical inducers for cell manipulation.
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Affiliation(s)
- Farid Ebnerasuly
- Department of Biology, Fars Science and Research Branch, Islamic Azad University, Marvdasht, Iran.,Department of Biology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
| | - Zahra Hajebrahimi
- Aerospace Research Institute, Ministry of Science Research and Technology, Tehran, Iran
| | - Seyed Mehdi Tabaie
- Department of Photo Healing and Regeneration, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran
| | - Mojtaba Darbouy
- Department of Biology, Fars Science and Research Branch, Islamic Azad University, Marvdasht, Iran.,Department of Biology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
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693
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Chang MH, Hsiao YP, Hsu CY, Lai PS. Photo-Crosslinked Polymeric Matrix with Antimicrobial Functions for Excisional Wound Healing in Mice. NANOMATERIALS 2018; 8:nano8100791. [PMID: 30301173 PMCID: PMC6215132 DOI: 10.3390/nano8100791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/30/2018] [Accepted: 09/30/2018] [Indexed: 01/08/2023]
Abstract
Wound infection extends the duration of wound healing and also causes systemic infections such as sepsis, and, in severe cases, may lead to death. Early prevention of wound infection and its appropriate treatment are important. A photoreactive modified gelatin (GE-BTHE) was synthesized by gelatin and a conjugate formed from the 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA) and the 2-hydroxyethyl methacrylate (HEMA). Herein, we investigated the photocurable polymer solution (GE-BTHE mixture) containing GE-BTHE, poly(ethylene glycol) diacrylate (PEGDA), chitosan, and methylene blue (MB), with antimicrobial functions and photodynamic antimicrobial chemotherapy for wound dressing. This photocurable polymer solution was found to have fast film-forming property attributed to the photochemical reaction between GE-BTHE and PEGDA, as well as the antibacterial activity in vitro attributed to the ingredients of chitosan and MB. Our in vivo results also demonstrated that untreated wounds after 3 days had the same scab level as the GE-BTHE mixture-treated wounds after 20 s of irradiation, which indicates that the irradiated GE-BTHE mixture can be quickly transferred into artificial scabs to protect wounds from an infection that can serve as a convenient excisional wound dressing with antibacterial efficacy. Therefore, it has the potential to treat nonhealing wounds, deep burns, diabetic ulcers and a variety of mucosal wounds.
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Affiliation(s)
- Ming-Hsiang Chang
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Yu-Ping Hsiao
- Institute of Medicine, School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.
- Department of Dermatology, Chung Shan Medical University Hospital, Taichung 402, Taiwan.
| | - Chia-Yen Hsu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Ping-Shan Lai
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
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694
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Jang HK, Oh JY, Jeong GJ, Lee TJ, Im GB, Lee JR, Yoon JK, Kim DI, Kim BS, Bhang SH, Lee TI. A Disposable Photovoltaic Patch Controlling Cellular Microenvironment for Wound Healing. Int J Mol Sci 2018; 19:E3025. [PMID: 30287745 PMCID: PMC6213857 DOI: 10.3390/ijms19103025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 01/10/2023] Open
Abstract
Electrical stimulation (ES) is known to affect the wound healing process by modulating skin cell behaviors. However, the conventional clinical devices that can generate ES for promoting wound healing require patient hospitalization due to large-scale of the extracorporeal devices. Herein, we introduce a disposable photovoltaic patch that can be applied to skin wound sites to control cellular microenvironment for promoting wound healing by generating ES. In vitro experiment results show that exogenous ES could enhance cell migration, proliferation, expression of extracellular matrix proteins, and myoblast differentiation of fibroblasts which are critical for wound healing. Our disposable photovoltaic patches were attached to the back of skin wound induced mice. Our patch successfully provided ES, generated by photovoltaic energy harvested from the organic solar cell under visible light illumination. In vivo experiment results show that the patch promoted cutaneous wound healing via enhanced host-inductive cell proliferation, cytokine secretion, and protein synthesis which is critical for wound healing process. Unlike the current treatments for wound healing that engage passive healing processes and often are unsuccessful, our wearable photovoltaic patch can stimulate regenerative activities of endogenous cells and actively contribute to the wound healing processes.
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Affiliation(s)
- Hyeon-Ki Jang
- Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Korea.
| | - Jin Young Oh
- Department of Chemical Engineering, Kyung Hee University, Yongin 17104, Korea.
| | - Gun-Jae Jeong
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Tae-Jin Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Gwang-Bum Im
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Jeong-Kee Yoon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
| | - Dong-Ik Kim
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea.
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Korea.
- Bio-MAX Institute, Institute of Chemical Processes, Seoul National University, Seoul 08826, Korea.
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea.
| | - Tae Il Lee
- Department of BioNano Technology, Gachon University, Seongnam 13120, Korea.
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695
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Tomic-Canic M, Wong LL, Smola H. The epithelialisation phase in wound healing: options to enhance wound closure. J Wound Care 2018; 27:646-658. [DOI: 10.12968/jowc.2018.27.10.646] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Majana Tomic-Canic
- Professor and Vice Chair of Research; Director, Wound Healing and Regenerative Medicine Research Program; Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, Florida, US
| | - Lulu L. Wong
- MD Candidate; Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, Florida, US
| | - Hans Smola
- Professor of Dermatology, Medical Director, PAUL HARTMANN AG, Heidenheim and Department of Dermatology, University of Cologne, Cologne, Germany
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696
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Huh MI, Yi SJ, Lee KP, Kim HK, An SH, Kim DB, Ryu RH, Kim JS, Lim JO. Full Thickness Skin Expansion ex vivo in a Newly Developed Reactor and Evaluation of Auto-Grafting Efficiency of the Expanded Skin Using Yucatan Pig Model. Tissue Eng Regen Med 2018; 15:629-638. [PMID: 30603584 PMCID: PMC6171704 DOI: 10.1007/s13770-018-0154-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Skin grafts are required in numerous clinical procedures, such as reconstruction after skin removal and correction of contracture or scarring after severe skin loss caused by burns, accidents, and trauma. The current standard for skin defect replacement procedures is the use of autologous skin grafts. However, donor-site tissue availability remains a major obstacle for the successful replacement of skin defects and often limits this option. The aim of this study is to effectively expand full thickness skin to clinically useful size using an automated skin reactor and evaluate auto grafting efficiency of the expanded skin using Yucatan female pigs. METHODS We developed an automated bioreactor system with the functions of real-time monitoring and remote-control, optimization of grip, and induction of skin porosity for effective tissue expansion. We evaluated the morphological, ultra-structural, and mechanical properties of the expanded skin before and after expansion using histology, immunohistochemistry, and tensile testing. We further carried out in vivo grafting study using Yucatan pigs to investigate the feasibility of this method in clinical application. RESULTS The results showed an average expansion rate of 180%. The histological findings indicated that external expansion stimulated cellular activity in the isolated skin and resulted in successful grafting to the transplanted site. Specifically, hyperplasia did not appear at the auto-grafted site, and grafted skin appeared similar to normal skin. Furthermore, mechanical stimuli resulted in an increase in COL1A2 expression in a suitable environment. CONCLUSIONS These findings provided insight on the potential of this expansion system in promoting dermal extracellular matrix synthesis in vitro. Conclusively, this newly developed smart skin bioreactor enabled effective skin expansion ex vivo and successful grafting in vivo in a pig model.
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Affiliation(s)
- Man-Il Huh
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Soo-Jin Yi
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Kyung-Pil Lee
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Hong Kyun Kim
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Sang-Hyun An
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Dan-Bi Kim
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Rae-Hyung Ryu
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Jun-Sik Kim
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Jeong Ok Lim
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
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697
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Walraven M, Hinz B. Therapeutic approaches to control tissue repair and fibrosis: Extracellular matrix as a game changer. Matrix Biol 2018; 71-72:205-224. [DOI: 10.1016/j.matbio.2018.02.020] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 02/08/2023]
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698
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Lin L, Guo P, Wang X, Huo R, Li Q, Yin S, Cao Y. Effective treatment for hypertrophic scar with dual-wave-length PDL and Nd:YAG in Chinese patients. J COSMET LASER THER 2018; 21:228-233. [PMID: 30260709 DOI: 10.1080/14764172.2018.1516889] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Li Lin
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Peng Guo
- Tuina Department, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Xining Wang
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Ran Huo
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Qiang Li
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Siyuan Yin
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
| | - Yongqian Cao
- Burns and Plastic Surgery, Provincial hospital affiliated to Shandong University, Jinan, China
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699
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Chen Z, Gu J, El Ayadi A, Oberhauser AF, Zhou J, Sousse LE, Finnerty CC, Herndon DN, Boor PJ. Effect of N-(2-aminoethyl) ethanolamine on hypertrophic scarring changes in vitro: Finding novel anti-fibrotic therapies. Toxicol Appl Pharmacol 2018; 362:9-19. [PMID: 30248415 DOI: 10.1016/j.taap.2018.09.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 08/29/2018] [Accepted: 09/20/2018] [Indexed: 01/21/2023]
Abstract
Hypertrophic scars (HS) limit movement, decrease quality of life, and remain a major impediment to rehabilitation from burns. However, no effective pharmacologic therapies for HS exist. Here we tested the in vitro anti-fibrotic effects of the novel chemical N-(2-aminoethyl) ethanolamine (AEEA) at non-toxic concentrations. Scanning electron microscopy showed that AEEA markedly altered the structure of the extracellular matrix (ECM) produced by primary dermal fibroblasts isolated from a HS of a burn patient (HTS). Compression atomic force microscopy revealed that AEEA stiffened the 3D nanostructure of ECM formed by HTS fibroblasts. Western blot analysis in three separate types of primary human dermal fibroblasts (including HTS) showed that AEEA exposure increased the extractability of type I collagen in a dose- and time-dependent fashion, while not increasing collagen synthesis. A comparison of the electrophoretic behavior of the same set of samples under native and denaturing conditions suggested that AEEA alters the 3D structure of type I collagen. The antagonization effect of AEEA to TGF-β1 on ECM formation was also observed. Furthermore, analyses of the anti-fibrotic effects of analogs of AEEA (with modified pharmacophores) suggest the existence of a chemical structure-activity relationship. Thus, AEEA and its analogs may inhibit HS development; further study and optimization of analogs may be a promising strategy for the discovery for effective HS therapies.
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Affiliation(s)
- Zhenping Chen
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jianhua Gu
- AFM/SEM Core Facility, The Houston Methodist Hospital Research Institute, Houston, TX 77030, USA
| | - Amina El Ayadi
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA; Shriners Hospitals for Children, Galveston, TX 77550, USA
| | - Andres F Oberhauser
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA; Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jia Zhou
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Linda E Sousse
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA; Shriners Hospitals for Children, Galveston, TX 77550, USA
| | - Celeste C Finnerty
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA; Shriners Hospitals for Children, Galveston, TX 77550, USA
| | - David N Herndon
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA; Shriners Hospitals for Children, Galveston, TX 77550, USA
| | - Paul J Boor
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Shriners Hospitals for Children, Galveston, TX 77550, USA.
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700
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Tigani EK, Skrtic D, Valerio MS, Kaufman G. Assessing the effect of triethyleneglycol dimethacrylate on tissue repair in 3D organotypic cultures. J Appl Toxicol 2018; 39:247-259. [PMID: 30229966 DOI: 10.1002/jat.3714] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/14/2018] [Accepted: 07/19/2018] [Indexed: 12/17/2022]
Abstract
Leachables from dental restoratives induce toxicity in gingival and pulp tissues and affect tissue regeneration/healing. Appropriate testing of these materials requires a platform that mimics the in vivo environment and allows the architectural self-assembly of cells into tissue constructs. In this study, we employ a new 3D model to assess the impact of triethyleneglycol dimethacrylate (TEGDMA) on early organization and advanced recruitment/accumulation of immortalized mouse gingival fibroblasts (GFs) and dental papilla mesenchymal cells (DPMCs) in extracellular matrix. We hypothesize that TEGDMA (1) interferes with the developmental architecture of GFs and DPMCs, and (2) inhibits the deposition of mineral. To test these hypotheses, GFs and DPMCs were incubated with the soluble TEGDMA at concentrations (0-2.5) mmol/L. Diameter and thickness of the constructs were determined by microscopic analysis. Cell differentiation was assessed by immunocytochemistry and the secreted mineral detected by alizarin-red staining. TEGDMA interfered with the development of GFs and/or DPMCs microtissues in a dose-dependent manner by inhibiting growth of inter-spherical cell layers and decreasing spheroid size (four to six times). At low/moderate TEGDMA levels, GFs organoids retained their structures while reducing thickness up to 21%. In contrast, at low TEGDMA doses, architecture of DPMC organoids was altered and thickness decreased almost twofold. Overall, developmental ability of TEGDMA-exposed GFs and DPMCs depended on TEGDMA level. GFs constructs were more resistant to structural modifications. The employed 3D platform was proven as an efficient tool for quantifying the effects of leachables on tissue repair capacities of gingiva and dental pulp.
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Affiliation(s)
- Elise K Tigani
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, 20899, USA
| | - Drago Skrtic
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, 20899, USA
| | - Michael S Valerio
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, 20899, USA
| | - Gili Kaufman
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, 20899, USA
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