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de Melo E, Cavalcanti P, Pires C, Tostes B, Miranda J, Barbosa A, da Rocha S, Deama N, Alves S, Gerbi M. Influence of the addition of nanohydroxyapatite to scaffolds on proliferation and differentiation of human mesenchymal stem cells: a systematic review of in vitro studies. Braz J Med Biol Res 2024; 57:e13105. [PMID: 38265343 PMCID: PMC10802233 DOI: 10.1590/1414-431x2023e13105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/27/2023] [Indexed: 01/25/2024] Open
Abstract
One of the main challenges of tissue engineering in dentistry is to replace bone and dental tissues with strategies or techniques that simulate physiological tissue repair conditions. This systematic review of in vitro studies aimed to evaluate the influence of the addition of nanohydroxyapatite (NHap) to scaffolds on cell proliferation and osteogenic and odontogenic differentiation of human mesenchymal stem cells. In vitro studies on human stem cells that proliferated and differentiated into odontogenic and osteogenic cells in scaffolds containing NHap were included in this study. Searches in PubMed/MEDLINE, Scopus, Web of Science, OpenGrey, ProQuest, and Cochrane Library electronic databases were performed. The total of 333 articles was found across all databases. After reading and analyzing titles and abstracts, 8 articles were selected for full reading and extraction of qualitative data. Results showed that despite the large variability in scaffold composition, NHap-containing scaffolds promoted high rates of cell proliferation, increased alkaline phosphatase (ALP) activity during short culture periods, and induced differentiation, as evidenced by the high expression of genes involved in osteogenesis and odontogenesis. However, further studies with greater standardization regarding NHap concentration, type of scaffolds, and evaluation period are needed to observe possible interference of these criteria in the action of NHap on the proliferation and differentiation of human stem cells.
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Affiliation(s)
- E.L. de Melo
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
| | | | - C.L. Pires
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
| | - B.V.A. Tostes
- Programa de Pós-graduação em Química, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - J.M. Miranda
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
| | - A.A. Barbosa
- Universidade Federal do Vale do São Francisco, Senhor do Bonfim, BA, Brasil
| | - S.I.S. da Rocha
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
| | - N.S. Deama
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
| | - S. Alves
- Programa de Pós-graduação em Química, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - M.E.M.M. Gerbi
- Programa de Pós-graduação em Odontologia, Universidade de Pernambuco, Recife, PE, Brasil
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Olcar HN, Isildar B, Ozkan S, Ercin M, Gezginci-Oktayoglu S, Koyuturk M. Investigation of conditioned medium properties obtained from human umbilical cord mesenchymal stem/stromal cells preconditioned with dimethyloxalylglycine in a correlation with ultrastructural changes. Microsc Res Tech 2024; 87:159-171. [PMID: 37728208 DOI: 10.1002/jemt.24420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
Mesenchymal stem/stromal cells (MSCs) hold significant therapeutic value due to their regeneration abilities, migration capacity, and immunosuppressive and immunomodulatory properties. These cells secrete soluble and insoluble factors, and this complex secretome contributes to their therapeutic effect. Furthermore, stimulation of cells by various external stimuli lead to secretome modifications that can increase the therapeutic efficacy. So, this study examined the effect of dimethyloxalylglycine (DMOG), a hypoxia-mimetic agent, on secretome profiles and exosome secretions of MSCs by evaluating conditioned medium (CM) and ultrastructural morphologies of the cells in comparison with unpreconditioned MSCs. The appropriate dose and duration of the use of DMOG were determined as 1000 μM and 24 h by evaluating the HIF-1α expression. DMOG-CM and N-CM were collected from MSCs incubated in serum-free medium with/without DMOG for 24 h, respectively. The content analysis of conditioned mediums (CMs) revealed that VEGF, NGF, and IL-4 levels were increased in DMOG-CM. Subsequently, exosomes were isolated from the CMs and were shown by transmission electron microscopy and Western blot analysis in both groups. The effects of CMs on proliferation and migration were determined by in vitro wound healing tests; both CMs increased the fibroblast's migratory and proliferative capacities. According to the ultrastructural evaluation, autophagosome, autolysosome, myelin figure, and microvesicular body structures were abundant in DMOG-preconditioned MSCs. Consistent with the high number of autophagic vacuoles, Beclin-1 expression was increased in those cells. These findings suggested that DMOG could alter MSCs' secretion profile, modify their ultrastructural morphology accordingly, and make the CM a more potent therapeutic tool. RESEARCH HIGHLIGHTS: Preconditioning mesenchymal stem/stromal cells with dimethyloxalylglycine, a hypoxia-mimetic agent, could modify cellular metabolism. Hypoxic mechanisms lead to alterations in the ultrastructural characteristics of mesenchymal stromal/stem cells. Preconditioning with dimethyloxalylglycine leads to ultrastructural and metabolic changes of mesenchymal stromal/stem cells along with modifications in their secretome profiles. Preconditioning of mesenchymal stromal/stem cells could render them a more potent therapeutic tool.
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Affiliation(s)
- Hanife Nurdan Olcar
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Basak Isildar
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Serbay Ozkan
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Merve Ercin
- Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Selda Gezginci-Oktayoglu
- Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Meral Koyuturk
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Isildar B, Ozkan S, Ercin M, Gezginci-Oktayoglu S, Oncul M, Koyuturk M. 2D and 3D cultured human umbilical cord-derived mesenchymal stem cell-conditioned medium has a dual effect in type 1 diabetes model in rats: immunomodulation and beta-cell regeneration. Inflamm Regen 2022; 42:55. [PMID: 36451229 PMCID: PMC9710085 DOI: 10.1186/s41232-022-00241-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 11/16/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Type 1 diabetes (T1D) is a T-cell-mediated autoimmune disease characterized by the irreversible destruction of insulin-producing β-cells in pancreatic islets. Helper and cytotoxic T-cells and cytokine production, which is impaired by this process, take a synergetic role in β-cell destruction, and hyperglycemia develops due to insulin deficiency in the body. Mesenchymal stem cells (MSCs) appear like an excellent therapeutic tool for autoimmune diseases with pluripotent, regenerative, and immunosuppressive properties. Paracrine factors released from MSCs play a role in immunomodulation by increasing angiogenesis and proliferation and suppressing apoptosis. In this context, the study aims to investigate the therapeutic effects of MSC's secretomes by conditioned medium (CM) obtained from human umbilical cord-derived MSCs cultured in 2-dimensional (2D) and 3-dimensional (3D) environments in the T1D model. METHODS First, MSCs were isolated from the human umbilical cord, and the cells were characterized. Then, two different CMs were prepared by culturing MSCs in 2D and 3D environments. The CM contents were analyzed in terms of total protein, IL-4, IL-10, IL-17, and IFN-λ. In vivo studies were performed in Sprague-Dawley-type rats with an autoimmune T1D model, and twelve doses of CM were administered intraperitoneally for 4 weeks within the framework of a particular treatment model. In order to evaluate immunomodulation, the Treg population was determined in lymphocytes isolated from the spleen after sacrification, and IL-4, IL-10, IL-17, and IFN-λ cytokines were analyzed in serum. Finally, β-cell regeneration was evaluated immunohistochemically by labeling Pdx1, Nkx6.1, and insulin markers, which are critical for the formation of β-cells. RESULTS Total protein and IL-4 levels were higher in 3D-CM compared to 2D-CM. In vivo results showed that CMs induce the Treg population and regulate cytokine release. When the immunohistochemical results were evaluated together, it was determined that CM application significantly increased the rate of β-cells in the islets. This increase was at the highest level in the 3D-CM applied group. CONCLUSION The dual therapeutic effect of MSC-CM on immunomodulation and homeostasis/regeneration of β-cells in the T1D model has been demonstrated. Furthermore, this effect could be improved by using 3D scaffolds for culturing MSCs while preparing CM.
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Affiliation(s)
- Basak Isildar
- grid.506076.20000 0004 1797 5496Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Serbay Ozkan
- grid.506076.20000 0004 1797 5496Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Merve Ercin
- grid.9601.e0000 0001 2166 6619Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Selda Gezginci-Oktayoglu
- grid.9601.e0000 0001 2166 6619Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Mahmut Oncul
- grid.506076.20000 0004 1797 5496Department of Gynecology and Obstetrics, Cerrahpasa Faculty of Medicine, Istanbul University- Cerrahpasa, Istanbul, Turkey
| | - Meral Koyuturk
- grid.506076.20000 0004 1797 5496Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Optimizing aseptic and serum milieu for the isolation of human whole umbilical cord tissue-derived mesenchymal stem cells. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1186/s43088-022-00308-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Mesenchymal stem cells (MSCs) have become an attractive tool for tissue engineering and targets in clinical transplantation due to their regeneration potential and immune-suppressive capacity. The human umbilical cord, which is discarded at birth, can provide an inexhaustible source of stem cells for therapy. They are reported to contain immune privilege cells which may be suitable for allogenic-based therapies. However, the use of MSCs for therapeutic application is based on their subsequent large-scale in vitro expansion. A fast and efficient protocol for the generation of large quantities of MSCs is required to meet the clinical demand and biomedical research needs.
Results
MSCs were isolated from the umbilical cord by explants and enzymatic digestion and cultured in the appropriate growth medium resulted in the propagation of more than 1X 108 cells within 15 days from the single umbilical cord.
Conclusion
The isolation efficiency, cell yield, colony-forming unit fibroblast (CFU-F), growth kinetics, phenotypic characteristics of UCMSCs were determined.
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Ozkan S, Isildar B, Ercin M, Gezginci-Oktayoglu S, Konukoglu D, Neşetoğlu N, Oncul M, Koyuturk M. Therapeutic potential of conditioned medium obtained from deferoxamine preconditioned umbilical cord mesenchymal stem cells on diabetic nephropathy model. Stem Cell Res Ther 2022; 13:438. [PMID: 36056427 PMCID: PMC9438289 DOI: 10.1186/s13287-022-03121-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/04/2022] [Indexed: 11/10/2022] Open
Abstract
Background The therapeutic potential of mesenchymal stem cells (MSCs)-derived conditioned media (CM) can be increased after preconditioning with various chemical agents. The aim of this study is comparative evaluation of effects of N-CM and DFS-CM which are collected from normal (N) and deferoxamine (DFS) preconditioned umbilical cord-derived MSCs on rat diabetic nephropathy (DN) model. Methods After incubation of the MSCs in serum-free medium with/without 150 µM DFS for 48 h, the contents of N-CM and DFS-CM were analyzed by enzyme-linked immunosorbent assay. Diabetes (D) was induced by single dose of 55 mg/kg streptozotocin. Therapeutic effects of CMs were evaluated by biochemical, physical, histopathological and immunohistochemical analysis. Results The concentrations of vascular endothelial growth factor alpha, nerve growth factor and glial-derived neurotrophic factor in DFS-CM increased, while one of brain-derived neurotrophic factor decreased in comparison with N-CM. The creatinine clearance rate increased significantly in both treatment groups, while the improvement in albumin/creatinine ratio and renal mass index values were only significant for D + DFS-CM group. Light and electron microscopic deteriorations and loss of podocytes-specific nephrin and Wilms tumor-1 (WT-1) expressions were significantly restored in both treatment groups. Tubular beclin-1 expression was significantly increased for DN group, but it decreased in both treatment groups. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive apoptotic cell death increased in the tubules of D group, while it was only significantly decreased for D + DFS-CM group. Conclusions DFS-CM can be more effective in the treatment of DN by reducing podocyte damage and tubular apoptotic cell death and regulating autophagic activity with its more concentrated secretome content than N-CM. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-03121-6.
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Affiliation(s)
- Serbay Ozkan
- Histology and Embryology Department, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Kocamustafapaşa Street, 34098, Istanbul, Turkey
| | - Basak Isildar
- Histology and Embryology Department, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Kocamustafapaşa Street, 34098, Istanbul, Turkey
| | - Merve Ercin
- Biology Department, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Selda Gezginci-Oktayoglu
- Biology Department, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Dildar Konukoglu
- Medical Biochemistry Department, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Neşet Neşetoğlu
- Faculty of Pharmacy, Drug Application and Research Center, Istanbul University, Istanbul, Turkey
| | - Mahmut Oncul
- Cerrahpasa Faculty of Medicine, Obstetrics and Gynecology Department, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Meral Koyuturk
- Histology and Embryology Department, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Kocamustafapaşa Street, 34098, Istanbul, Turkey.
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Kaleci B, Koyuturk M. Efficacy of resveratrol in the wound healing process by reducing oxidative stress and promoting fibroblast cell proliferation and migration. Dermatol Ther 2020; 33:e14357. [DOI: 10.1111/dth.14357] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/14/2020] [Accepted: 09/23/2020] [Indexed: 01/10/2023]
Affiliation(s)
- Belisa Kaleci
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
| | - Meral Koyuturk
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
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Miranda JM, de Arruda JAA, Moreno LMM, Gaião WDC, do Nascimento SVB, Silva EVDS, da Silva MB, Rodrigues CG, de Albuquerque DS, Braz R, Pinheiro ALB, Gerbi MEMDM. Photobiomodulation Therapy in the Proliferation and Differentiation of Human Umbilical Cord Mesenchymal Stem Cells: An In Vitro Study. J Lasers Med Sci 2020; 11:469-474. [PMID: 33425299 DOI: 10.34172/jlms.2020.73] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Introduction: Since photobiomodulation therapy (PBMT) favors in vitro mesenchymal stem cell (MSC) preconditioning before MSC transplantation, increasing the proliferation of these cells without molecular injuries by conserving their characteristics, in the present in vitro study we analyzed the effect of PBMT on the proliferation and osteogenic differentiation of human umbilical cord mesenchymal stem cells (hUCMSCs). Methods: Irradiation with an InGaAIP Laser (660 nm, 10 mW, 2.5 J/cm2 , 0.08 cm2 spot size, and 10 s) was carried out. The cells were divided into four groups: CONTROL [cells grown in Dulbecco's Modified Eagle Medium (DMEM)], OSTEO (cells grown in an osteogenic medium); PBMT (cells grown in DMEM+PBMT), and OSTEO+PBMT (cells grown in an osteogenic medium plus PBMT). The cell proliferation curve was obtained over periods of 24, 48 and 72 hours using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Osteogenic differentiation was analyzed by the formation of calcium nodules over periods of 7, 14 and 21 days. Morphometric analysis was performed to quantify the total area of nodular calcification. Results: The highest cell proliferation and cell differentiation occurred in the OSTEO+PBMT group, followed by the PBMT, OSTEO and CONTROL groups respectively, at the observed times (P <0.05). Conclusion: PBMT enhanced the osteogenic proliferation and the differentiation of hUCMSCs during the periods tested, without causing damage to the cells and preserving their specific characteristics, a fact that may represent an innovative pretreatment in the application of stem cells.
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Affiliation(s)
- Jéssica Meirinhos Miranda
- Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil.,Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | - José Alcides Almeida de Arruda
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lara Marques Magalhães Moreno
- Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil.,Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | | | - Sinval Vinícius Barbosa do Nascimento
- Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil.,Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | - Eduardo Vinícius de Souza Silva
- Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil.,Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | - Márcia Bezerra da Silva
- Department of Biophysics and Radiobiology, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | | | - Diana Santana de Albuquerque
- Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | - Rodivan Braz
- Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
| | | | - Marleny Elizabeth Marquez de Martinez Gerbi
- Laser Center, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil.,Department of Restorative Dentistry and Endodontics, School of Dentistry, Universidade de Pernambuco, Camaragibe, PE, Brazil
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Kahraman NS, Oner A. Umbilical cord derived mesenchymal stem cell implantation in retinitis pigmentosa: a 6-month follow-up results of a phase 3 trial. Int J Ophthalmol 2020; 13:1423-1429. [PMID: 32953582 DOI: 10.18240/ijo.2020.09.14] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/15/2020] [Indexed: 12/20/2022] Open
Abstract
AIM To investigate the efficacy and the safety of umbilical cord derived mesenchymal stem cell (UC-MSC) implantation in patients with retinitis pigmentosa (RP). METHODS This prospective, single-center, phase 3 clinical study enrolled 124 eyes of 82 RP patients. The patients received 5 million UC-MSCs to the suprachoroidal area with a surgical procedure. Patients were evaluated on the 1st day, 1st, and 6th months postoperatively. Best corrected visual acuity (BCVA), anterior segment and fundus examinations, color photography, optical coherence tomography (OCT), and visual field (VF) tests were carried out at each visit. Fundus fluorescein angiography (FFA) and multifocal electroretinography (mfERG) recordings were performed at the end of the 6th month. Ocular and systemic adverse events of the surgical procedure were also noted. RESULTS All of the 82 patients completed the 6-month follow-up period. None of them had any serious systemic or ocular complications. There were statistically significant improvements in BCVA and VF during the study (all P<0.05). The amplitudes of the P1 waves in the central areas showed significant improvements in mfERG recordings. There were also significant increases in implicit times of P1 waves in the central areas. CONCLUSION Suprachoroidal administration of UC-MSCs has beneficial effect on BCVA, VF, and mfERG measurements during the 6-month follow-up period. Cell mediated therapy based on the secretion of growth factors (GFs) seems to be an effective and safe option for degenerative retinal diseases.
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Affiliation(s)
| | - Ayse Oner
- Department of Ophthalmology, Kayseri Acibadem Hospital, Kayseri 38030, Turkey
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Isildar B, Ozkan S, Oncul M, Baslar Z, Kaleli S, Tasyurekli M, Koyuturk M. Comparison of different cryopreservation protocols for human umbilical cord tissue as source of mesenchymal stem cells. Acta Histochem 2019; 121:361-367. [PMID: 30837094 DOI: 10.1016/j.acthis.2019.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 12/31/2022]
Abstract
The main purpose of this study is to establish an effective cryopreservation protocol for the umbilical cord tissue as a source of mesenchymal stem cells (MSCs). In this context, it was aimed to use a cryoprotectant that could be an alternative to dimethyl sulfoxide (DMSO) which is commonly used despite the toxic side effects. Therefore, two different cryopreservation solutions were prepared using 10% DMSO and 10% 1,2 propanediol (PrOH). The fresh tissue group that was not performed cryopreservation was used as the control group. Following the cryopreservation step, MSCs were isolated from all groups and compared with each other to assess the efficiency of the cryopreservation solutions. The comparison was performed in terms of followings: morphology, immunophenotypes, growth kinetics, differentiation, and ultrastructural features. Based on the results, there were no significant morphological and immunophenotypic differences between the MSCs isolated from cryopreserved tissue groups and the MSCs isolated from the fresh tissue group. According to the growth kinetic analysis, the cells isolated from the PrOH group had a lower proliferation rate than the cells isolated from the fresh tissue. However, there was no significant difference between the cryopreserved groups in this respect. Osteogenic and adipogenic differentiation was observed in all groups. Upon comparison of the cryopreserved groups, PrOH group was discovered to hold a minor superiority in terms of these modes of differentiation. These results suggest that PrOH, which is considered as a cryoprotectant with low toxicity, could be used as a preferred cryoprotectant instead of DMSO concerning the process of cryopreservation of the umbilical cord.
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Affiliation(s)
- Basak Isildar
- Department of Histology and Embryology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey.
| | - Serbay Ozkan
- Department of Histology and Embryology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Mahmut Oncul
- Department of Gynecology and Obstetrics, Cerrahpasa Medical Faculty, Istanbul University- Cerrahpasa, Istanbul, Turkey
| | - Zafer Baslar
- Division of Hematology, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Semih Kaleli
- Department of Gynecology and Obstetrics, Cerrahpasa Medical Faculty, Istanbul University- Cerrahpasa, Istanbul, Turkey
| | - Mustafa Tasyurekli
- Department of Histology and Embryology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Meral Koyuturk
- Department of Histology and Embryology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
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