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Tovar Vetencourt A, Sayed-Ahmed I, Gomez J, Chen H, Agostini B, Carroll K, Parry T, Krishnan S, Sabater AL. Ocular Gene Therapy in a Patient with Dystrophic Epidermolysis Bullosa. N Engl J Med 2024; 390:530-535. [PMID: 38324486 DOI: 10.1056/nejmoa2301244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Dystrophic epidermolysis bullosa is a rare genetic disease caused by damaging variants in COL7A1, which encodes type VII collagen. Blistering and scarring of the ocular surface develop, potentially leading to blindness. Beremagene geperpavec (B-VEC) is a replication-deficient herpes simplex virus type 1-based gene therapy engineered to deliver functional human type VII collagen. Here, we report the case of a patient with cicatrizing conjunctivitis in both eyes caused by dystrophic epidermolysis bullosa who received ophthalmic administration of B-VEC, which was associated with improved visual acuity after surgery.
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Affiliation(s)
- Arianna Tovar Vetencourt
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Ibrahim Sayed-Ahmed
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Jennifer Gomez
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Hubert Chen
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Brittani Agostini
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Kate Carroll
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Trevor Parry
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Suma Krishnan
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
| | - Alfonso L Sabater
- From the Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami (A.T., I.S.-A., J.G., A.L.S.); and Krystal Biotech, Pittsburgh (H.C., B.A., K.C., T.P., S.K.)
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Al-Yousuf N, Alsetri H, Farid E, George SM. Amniotic Membrane Transplantation an Experience of a Locally Prepared Tissue. TRANSPLANT RESEARCH AND RISK MANAGEMENT 2022. [DOI: 10.2147/trrm.s336917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Castiglia D, Fortugno P, Condorelli AG, Barresi S, De Luca N, Pizzi S, Neri I, Graziano C, Trojan D, Ponzin D, Rossi S, Zambruno G, Tartaglia M. A Novel Phenotype of Junctional Epidermolysis Bullosa with Transient Skin Fragility and Predominant Ocular Involvement Responsive to Human Amniotic Membrane Eyedrops. Genes (Basel) 2021; 12:716. [PMID: 34064633 PMCID: PMC8151857 DOI: 10.3390/genes12050716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 02/06/2023] Open
Abstract
Junctional epidermolysis bullosa (JEB) is a clinically and genetically heterogeneous skin fragility disorder frequently caused by mutations in genes encoding the epithelial laminin isoform, laminin-332. JEB patients also present mucosal involvement, including painful corneal lesions. Recurrent corneal abrasions may lead to corneal opacities and visual impairment. Current treatments are merely supportive. We report a novel JEB phenotype distinguished by the complete resolution of skin fragility in infancy and persistent ocular involvement with unremitting and painful corneal abrasions. Biallelic LAMB3 mutations c.3052-5C>G and c.3492_3493delCG were identified as the molecular basis for this phenotype, with one mutation being a hypomorphic splice variant that allows residual wild-type laminin-332 production. The reduced laminin-332 level was associated with impaired keratinocyte adhesion. Then, we also investigated the therapeutic power of a human amniotic membrane (AM) eyedrop preparation for corneal lesions. AM were isolated from placenta donors, according to a procedure preserving the AM biological characteristics as a tissue, and confirmed to contain laminin-332. We found that AM eyedrop preparation could restore keratinocyte adhesion in an in vitro assay. Of note, AM eyedrop administration to the patient resulted in long-lasting remission of her ocular manifestations. Our findings suggest that AM eyedrops could represent an effective, non-invasive, simple-to-handle treatment for corneal lesions in patients with JEB and possibly other EB forms.
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Affiliation(s)
- Daniele Castiglia
- Laboratory of Molecular and Cell Biology, IDI-IRCCS, 00167 Rome, Italy; (P.F.); (N.D.L.)
| | - Paola Fortugno
- Laboratory of Molecular and Cell Biology, IDI-IRCCS, 00167 Rome, Italy; (P.F.); (N.D.L.)
| | - Angelo Giuseppe Condorelli
- Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (A.G.C.); (G.Z.)
| | - Sabina Barresi
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00146 Rome, Italy; (S.B.); (S.P.); (M.T.)
| | - Naomi De Luca
- Laboratory of Molecular and Cell Biology, IDI-IRCCS, 00167 Rome, Italy; (P.F.); (N.D.L.)
| | - Simone Pizzi
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00146 Rome, Italy; (S.B.); (S.P.); (M.T.)
| | - Iria Neri
- Department of Experimental, Diagnostic and Specialty Medicine, Division of Dermatology, S. Orsola-Malpighi University Hospital, 40138 Bologna, Italy;
| | - Claudio Graziano
- Medical Genetics, S. Orsola-Malpighi University Hospital, 40138 Bologna, Italy;
| | | | - Diego Ponzin
- The Veneto Eye Bank Foundation, 30174 Venice, Italy;
| | - Sabrina Rossi
- Pathology Unit, Department of Laboratories, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Giovanna Zambruno
- Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (A.G.C.); (G.Z.)
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00146 Rome, Italy; (S.B.); (S.P.); (M.T.)
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Rashad R, Weed MC, Quinn N, Chen VM. Extended Wear Bandage Contact Lenses Decrease Pain and Preserve Vision in Patients with Epidermolysis Bullosa: Case Series and Review of Literature. Ocul Immunol Inflamm 2019; 28:379-383. [DOI: 10.1080/09273948.2019.1587472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ramy Rashad
- Tufts University School of Medicine, Boston, MA, USA
| | | | - Nicole Quinn
- New England College of Optometry, Boston, MA, USA
| | - Vicki M. Chen
- Tufts Medical Center, Boston, MA, USA
- New England Eye Center, Boston, MA, USA
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Akazawa K, Iwasaki K, Nagata M, Yokoyama N, Ayame H, Yamaki K, Tanaka Y, Honda I, Morioka C, Kimura T, Komaki M, Kishida A, Izumi Y, Morita I. Cell transfer technology for tissue engineering. Inflamm Regen 2017; 37:21. [PMID: 29259720 PMCID: PMC5725820 DOI: 10.1186/s41232-017-0052-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/18/2017] [Indexed: 12/28/2022] Open
Abstract
We recently developed novel cell transplantation method “cell transfer technology” utilizing photolithography. Using this method, we can transfer ex vivo expanded cells onto scaffold material in desired patterns, like printing of pictures and letters on a paper. We have investigated the possibility of this novel method for cell-based therapy using several disease models. We first transferred endothelial cells in capillary-like patterns on amnion. The transplantation of the endothelial cell-transferred amnion enhanced the reperfusion in mouse ischemic limb model. The fusion of transplanted capillary with host vessel networks was also observed. The osteoblast- and periodontal ligament stem cell-transferred amnion were next transplanted in bone and periodontal defects models. After healing period, both transplantations improved the regeneration of bone and periodontal tissues, respectively. This method was further applicable to transfer of multiple cell types and the transplantation of osteoblasts and periodontal ligament stem cell-transferred amnion resulted in the improved bone regeneration compared with single cell type transplantation. These data suggested the therapeutic potential of the technology in cell-based therapies for reperfusion of ischemic limb and regeneration of bone and periodontal tissues. Cell transfer technology is applicable to wide range of regenerative medicine in the future.
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Affiliation(s)
- Keiko Akazawa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Kengo Iwasaki
- Department of Nanomedicine (DNP), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Mizuki Nagata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Naoki Yokoyama
- Life Science Laboratory, Research and Development Center, Dai Nippon Printing Co., Ltd., 1-1-1 Kaga-cho, Shinjuku-ku, Tokyo, 162-8001 Japan
| | - Hirohito Ayame
- Life Science Laboratory, Research and Development Center, Dai Nippon Printing Co., Ltd., 1-1-1 Kaga-cho, Shinjuku-ku, Tokyo, 162-8001 Japan
| | - Kazumasa Yamaki
- Life Science Laboratory, Research and Development Center, Dai Nippon Printing Co., Ltd., 1-1-1 Kaga-cho, Shinjuku-ku, Tokyo, 162-8001 Japan
| | - Yuichi Tanaka
- Life Science Laboratory, Research and Development Center, Dai Nippon Printing Co., Ltd., 1-1-1 Kaga-cho, Shinjuku-ku, Tokyo, 162-8001 Japan
| | - Izumi Honda
- Department of Comprehensive Reproductive Medicine, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Chikako Morioka
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Tsuyoshi Kimura
- Department of Comprehensive Reproductive Medicine, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Motohiro Komaki
- Department of Nanomedicine (DNP), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Akio Kishida
- Department of Material-based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10, Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062 Japan
| | - Yuichi Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Ikuo Morita
- Department of Cellular Physiological Chemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
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Long-Term Follow-Up of Amniotic Membrane Graft for the Treatment of Symblepharon in a Patient With Recessive Dystrophic Epidermolysis Bullosa. Cornea 2017; 35:1242-4. [PMID: 27124783 DOI: 10.1097/ico.0000000000000861] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To report a case of symblepharon due to epidermolysis bullosa (EB), surgical treatment, and follow-up to 14 years. METHODS A 17-year-old white female with recessive dystrophic EB presented with decreased vision due to extensive symblepharon OU. There was opacification and neovascularization of the cornea OU with limited motility. RESULTS The symblepharon was surgically lysed, anterior lamellar keratectomy performed, and amniotic membrane graft transplanted to the cornea and palpebral conjunctiva, first in the OS and subsequently in the OD. Visual acuity improved from counting fingers to 20/40 in the OS and from 20/200 to 20/70 in the OD at 2 months and 6 weeks postoperatively, respectively, with minimal symblepharon, mild corneal scarring, neovascularization, and haze of OU. She recovered full ductions, but noted diplopia and had a 35 prism diopter exotropia. Symblepharon resolved after 6 months, and alignment improved to 4 prism diopter exophoria. At 14 years follow-up, visual acuity was 20/20 in the OD and 20/30 in the OS, with clear cornea, maintained on fluorometholone 0.1% one drop OU at bedtime. CONCLUSIONS Surgical symblepharolysis, superficial lamellar keratectomy, and amniotic membrane graft transplantation were effective for our patient with recessive dystrophic EB. Her postoperative exotropia resolved over time with monitoring and convergence exercises.
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Abstract
Genetic skin diseases, or genodermatoses, often have extracutaneous manifestations. Ocular manifestations in particular can have significant clinical implications, like blindness. Other manifestations, such as the corneal opacities that occur in X-linked ichthyosis, are asymptomatic but characteristic of a particular genodermatosis. Ophthalmologic examination can aid in diagnosis when characteristic findings are seen. The genodermatoses with ocular manifestations will be reviewed, but neurocutaneous, syndromes, genetic pigmentary disorders, and genetic metabolic diseases are not included because they are covered elsewhere in this issue.
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Affiliation(s)
- Melinda Jen
- Section of Pediatric Dermatology, Children's Hospital of Philadelphia; Departments of Pediatrics and Dermatology, Perelman School of Medicine at the University of Pennsylvania, 3550 Market St, Second floor, Philadelphia, PA, 19104.
| | - Sudha Nallasamy
- The Vision Center, Children's Hospital Los Angeles; Department of Ophthalmology, Keck School of Medicine, University of Southern California, 4650 Sunset Blvd, MS #88, Los Angeles, CA, 90027
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McDonald CA, Payne NL, Sun G, Moussa L, Siatskas C, Lim R, Wallace EM, Jenkin G, Bernard CCA. Immunosuppressive potential of human amnion epithelial cells in the treatment of experimental autoimmune encephalomyelitis. J Neuroinflammation 2015; 12:112. [PMID: 26036872 PMCID: PMC4457975 DOI: 10.1186/s12974-015-0322-8] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 05/14/2015] [Indexed: 01/25/2023] Open
Abstract
Background Multiple sclerosis (MS) is an autoimmune inflammatory disease of the central nervous system (CNS). In recent years, it has been found that cells such as human amnion epithelial cells (hAECs) have the ability to modulate immune responses in vitro and in vivo and can differentiate into multiple cell lineages. Accordingly, we investigated the immunoregulatory effects of hAECs as a potential therapy in an MS-like disease, EAE (experimental autoimmune encephalomyelitis), in mice. Methods Using flow cytometry, the phenotypic profile of hAECs from different donors was assessed. The immunomodulatory properties of hAECs were examined in vitro using antigen-specific and one-way mixed lymphocyte proliferation assays. The therapeutic efficacy of hAECs was examined using a relapsing-remitting model of EAE in NOD/Lt mice. T cell responsiveness, cytokine secretion, T regulatory, and T helper cell phenotype were determined in the peripheral lymphoid organs and CNS of these animals. Results In vitro, hAECs suppressed both specific and non-specific T cell proliferation, decreased pro-inflammatory cytokine production, and inhibited the activation of stimulated T cells. Furthermore, T cells retained their naïve phenotype when co-cultured with hAECs. In vivo studies revealed that hAECs not only suppressed the development of EAE but also prevented disease relapse in these mice. T cell responses and production of the pro-inflammatory cytokine interleukin (IL)-17A were reduced in hAEC-treated mice, and this was coupled with a significant increase in the number of peripheral T regulatory cells and naïve CD4+ T cells. Furthermore, increased proportions of Th2 cells in the peripheral lymphoid organs and within the CNS were observed. Conclusion The therapeutic effect of hAECs is in part mediated by inducing an anti-inflammatory response within the CNS, demonstrating that hAECs hold promise for the treatment of autoimmune diseases like MS.
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Affiliation(s)
- Courtney A McDonald
- Australian Regenerative Medicine Institute, Monash University, Clayton, 3800, Australia.,The Ritchie Centre, MIMR-PHI Institute of Medical Research, Clayton, VIC, 3800, Australia
| | - Natalie L Payne
- Australian Regenerative Medicine Institute, Monash University, Clayton, 3800, Australia.
| | - Guizhi Sun
- Australian Regenerative Medicine Institute, Monash University, Clayton, 3800, Australia
| | - Leon Moussa
- Australian Regenerative Medicine Institute, Monash University, Clayton, 3800, Australia
| | - Christopher Siatskas
- Monash Immunology and Stem Cell Laboratories, Monash University, Clayton, VIC, 3800, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, 3800, Australia
| | - Rebecca Lim
- The Ritchie Centre, MIMR-PHI Institute of Medical Research, Clayton, VIC, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, 3800, Australia
| | - Euan M Wallace
- The Ritchie Centre, MIMR-PHI Institute of Medical Research, Clayton, VIC, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, 3800, Australia
| | - Graham Jenkin
- The Ritchie Centre, MIMR-PHI Institute of Medical Research, Clayton, VIC, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, 3800, Australia
| | - Claude C A Bernard
- Australian Regenerative Medicine Institute, Monash University, Clayton, 3800, Australia.
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Iwasaki K, Komaki M, Yokoyama N, Tanaka Y, Taki A, Honda I, Kimura Y, Takeda M, Akazawa K, Oda S, Izumi Y, Morita I. Periodontal regeneration using periodontal ligament stem cell-transferred amnion. Tissue Eng Part A 2013; 20:693-704. [PMID: 24032400 DOI: 10.1089/ten.tea.2013.0017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Periodontal disease is characterized by the destruction of tooth supporting tissues. Regeneration of periodontal tissues using ex vivo expanded cells has been introduced and studied, although appropriate methodology has not yet been established. We developed a novel cell transplant method for periodontal regeneration using periodontal ligament stem cell (PDLSC)-transferred amniotic membrane (PDLSC-amnion). The aim of this study was to investigate the regenerative potential of PDLSC-amnion in a rat periodontal defect model. Cultured PDLSCs were transferred onto amniotic membranes using a glass substrate treated with polyethylene glycol and photolithography. The properties of PDLSCs were investigated by flow cytometry and in vitro differentiation. PDLSC-amnion was transplanted into surgically created periodontal defects in rat maxillary molars. Periodontal regeneration was evaluated by microcomputed tomography (micro-CT) and histological analysis. PDLSCs showed mesenchymal stem cell-like characteristics such as cell surface marker expression (CD90, CD44, CD73, CD105, CD146, and STRO-1) and trilineage differentiation ability (i.e., into osteoblasts, adipocytes, and chondrocytes). PDLSC-amnion exhibited a single layer of PDLSCs on the amniotic membrane and stability of the sheet even with movement and deformation caused by surgical instruments. We observed that the PDLSC-amnion enhanced periodontal tissue regeneration as determined by micro-CT and histology by 4 weeks after transplantation. These data suggest that PDLSC-amnion has therapeutic potential as a novel cell-based regenerative periodontal therapy.
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Affiliation(s)
- Kengo Iwasaki
- 1 Department of Nanomedicine (DNP), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo, Japan
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Ocular surface reconstruction with cultivated limbal epithelium in a patient with unilateral stem cell deficiency caused by Epidermolysis bullosa dystrophica hallopeau-Siemens. Cornea 2011; 29:462-4. [PMID: 20164760 DOI: 10.1097/ico.0b013e3181b442ea] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To report a case of partial limbal stem cell deficiency (LSCD) caused by epidermolysis bullosa dystrophica mutilans Hallopeau-Siemens treated by transplantation of autologous ex vivo expanded limbal epithelium. METHODS Review of the clinical findings of an 11.5-year-old boy with unilateral LSCD and epidermolysis bullosa dystrophica who underwent ocular surface reconstruction in the right eye with autologous on intact human amniotic membrane cultivated limbal epithelial cells. RESULTS Twenty-eight months after reconstruction, the corneal surface is clear, smooth, and stable showing no signs of LSCD recurrence. Three subconjunctival bevacizumab (Avastin) injections reduced the recurrent growth of symblepharon and corneal vascularization. The visual acuity has increased from hand motion to 20/50. CONCLUSION Autologous transplantation of cultivated human limbal epithelial cells on intact human amniotic membrane can be a safe and effective method for corneal surface reconstruction in LSCD caused by recessive epidermolysis bullosa dystrophica.
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McDonald C, Siatskas C, C.A. Bernard C. The emergence of amnion epithelial stem cells for the treatment of Multiple Sclerosis. Inflamm Regen 2011. [DOI: 10.2492/inflammregen.31.256] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Sadowsky AE. Dermatologic Disorders and the Cornea. Cornea 2011. [DOI: 10.1016/b978-0-323-06387-6.00072-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Canturk S, Akova Y, Oner V. Limbal stem cell transplantation with amniotic membrane for the treatment of uniocular chemical burn in children. J Pediatr Ophthalmol Strabismus 2010; 47 Online:e1-5. [PMID: 21214156 DOI: 10.3928/01913913-20100324-10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Accepted: 04/29/2008] [Indexed: 11/20/2022]
Abstract
This study evaluated the outcome of corneal surface reconstruction with conjunctival limbal autograft and amniotic membrane transplantation in two children with unilateral ocular chemical burn who underwent surgery. Visual acuity improved from counting fingers at face to 20/60 in one patient and from counting fingers at 30 cm to 20/100 in the other. Both patients received simultaneous symblepharon lysis and regained deep fornices. When used in combination with amniotic membrane, conjunctival autograft allows correction of cicatricial abnormalities and early restoration of corneal surface integrity. Intervention within 6 months is desirable for rehabilitation of vision in the amblyogenic period.
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Affiliation(s)
- Silay Canturk
- Baskent University School of Medicine, Department of Ophthalmology, Ankara, Turkey
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Affiliation(s)
- Venetia Lo
- Division of Paediatric Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
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