Unlabelled: The new defined anatomical and functional complex conjunctiva-limbus-cornea is a new concept, which helps clinicians better understand and treat ocular surface pathologies. The management of the ocular surface disease has changed dramatically over the years, with spectacular improvements of techniques, and of course, results. The amniotic membrane, used as a graft or as a substrate for the cultivation of limbal corneal cells has showed encouraging results.
Aim: To investigate the usefulness of amniotic membrane transplantation in ocular surface pathologies.
Method: The study is retrospective. 28 eyes of 28 patients with ocular surface pathologies (ocular burns, recent and old, symblepharon, pterygium, corneal and conjunctival tumors, persistent epithelial defect) underwent an amniotic membrane transplantation during a 1 year period. The necrotic and the scar tissue were first excised in all the patients and the amniotic membrane was sutured with an epithelial face up. Follow up ranged from 1 to 12 months.
Results: Good results were obtained in all 28 eyes. The anatomy of cornea and conjunctiva was improved, with limited benefits only in old ocular burn, symblepharon and in one case of extended tumors of the cornea and conjunctiva. Out of 28 eyes, 23 (82%) also had a visual acuity improvement.
Conclusion: The amniotic membrane may be considered a good alternative for ocular surface reconstruction especially in acute status.
Abbreviations: AMT = amniotic membrane transplantation, BCVA = best corrected visual acuity, BUT = break up time.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4863510 | PMC |
Cell Tissue Bank
January 2025
Institute of Tissue Banking and Biomaterial Research, Atomic Energy Research Establishment (AERE), Savar, Dhaka, 1349, Bangladesh.
In the quest for an ideal wound healing material, human amniotic membrane (AM), tilapia skin collagen (TSC), and Centella asiatica (CA) have been studied separately for their healing potential. In this study, we formulated AM, TSC, and CA gel and studied their competency and wound healing efficacy in vivo. Gel was formulated using AM, TSC, CA, Carbopol 934, acrylic acid, glycerine, and triethanolamine and physicochemical properties e.
View Article and Find Full Text PDFStem Cells Cloning
January 2025
Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia.
Objective: Chronic wounds are a common clinical problem that necessitate the exploration of novel regenerative therapies. We report a method to investigate the in vitro wound healing capacity of an innovative biomaterial, which is based on amniotic membrane-derived stem cells (AMSCs) embedded in an alginate hydrogel matrix. The aim of this study was to prepare an sodium alginate-based hydrogel, cross-linked calcium chloride (CaCl with the active ingredient AMSC (AMSC/Alg-H) and to evaluate its in vitro effectiveness for wound closure.
View Article and Find Full Text PDFNarra J
December 2024
Department of Plastic Reconstructive and Aesthetic Surgery, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia.
Previous studies have explored nanofat stimulating tissue regeneration and maturation, promoting remodeling through its rich content of growth factors and stem cells; however, comprehensive data on its use in full-thickness wounds remains limited. The aim of this study was to evaluate the effectiveness of combining nanofat with freeze-dried human amniotic membrane (FDHAM) for treating full-thickness wounds in a rabbit model. An animal experimental study using a post-test control group design was conducted.
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December 2024
Department of Polymer Science and Engineering, Chonbuk National University, Jeonju, South Korea.
Placenta tissue has biological advantages, including anti-inflammatory, anti-bacterial, anti-fibrotic formation, and immunomodulatory properties. The amnion membrane (AM) is an inner side membrane of the placenta that faces the fetus. The main sources of amnion are humans and animals, with bovine being one of the significant sources.
View Article and Find Full Text PDFJ Am Acad Orthop Surg Glob Res Rev
January 2025
From the Steadman Hawkins Clinic of the Carolinas, Prisma Health-Upstate, Greenville, SC (Dr. Pill, Dr. Ahearn, Dr. Siffri, Dr. Burnikel, Dr. Cassas, Dr. Wyland, and Dr. Kissenberth); the Mayo Clinic Arizona, Scottsdale, AZ (Dr. Tokish); the Department of Orthopaedics, Duke University, Durham NC (Dr. Cook); the Laboratory of Orthopaedic Tissue Regeneration & Orthobiologics, Department of Bioengineering, Clemson University, Clemson, SC (Dr. Mercuri, Mr. Sawvell, and Mr. Wright); the Frank H. Stelling and C. Dayton Riddle Orthopaedic Education and Research Laboratory, Clemson University Biomedical Engineering Innovation Campus, Greenville, SC (Dr. Mercuri, Mr. Sawvell, and Mr. Wright); and the Hawkins Foundation, Greenville, SC (Dr. Hutchinson, Dr. Bynarowicz, and Dr. Adams).
Introduction: The use of corticosteroid injections for short-term pain relief for knee osteoarthritis can have deleterious adverse effects. Amniotic tissue has shown promise in vitro; therefore, this study compared a morcellized injectable amniotic tissue allograft to corticosteroid injection.
Methods: Eighty-one patients with symptomatic severe knee osteoarthritis (Kellgren-Lawrence grade 3 to 4) were prospectively randomized to either a double-blinded single injection of BioDRestore (Integra LifeSciences; n = 39) or triamcinolone acetonide (n = 42).
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