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Amniotic membrane graft

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https://www.readbyqxmd.com/read/29793112/3d-printed-membrane-as-an-alternative-to-amniotic-membrane-for-ocular-surface-conjunctival-defect-reconstruction-an-in-vitro-in-vivo-study
#1
Shima Dehghani, Morteza Rasoulianboroujeni, Hamed Ghasemi, Saeed Heidari Keshel, Zohreh Nozarian, Mohammad Naser Hashemian, Mehran Zarei-Ghanavati, Golshan Latifi, Reza Ghaffari, Zhanfeng Cui, Hua Ye, Lobat Tayebi
BACKGROUND: The aim of this study was to evaluate the surgical handling and clinical applicability of a specific 3D-printed membrane design fabricated using a gelatin, elastin and sodium hyaluronate blend for conjunctival reconstruction and compare it with amniotic membrane (AM), which is normally used in such surgeries. METHODS: 3D printing technique was employed to fabricate the membrane based on gradient design. Prior to printing, rheometry was employed to optimize the ink composition...
May 11, 2018: Biomaterials
https://www.readbyqxmd.com/read/29785085/-wet-transepithelial-phototherapeutic-keratectomy-in-the-management-of-persistent-epithelial-defects-in-the-graft
#2
Sergei V Churashov, Elena V Kudryashova, Alexei N Kulikov, Ernest V Boiko, Valerii F Chernysh, Dmitrii S Maltsev
Purpose: This study aimed to evaluate the efficacy of "wet" transepithelial phototherapeutic keratectomy (TE-PTK) for treating persistent epithelial defects (PEDs) in the corneal graft following penetrating keratoplasty (PKP). Methods: This study describes a noncomparative, prospective interventional case series. Patients with post-PKP graft epithelial defects lasting >3 months despite previous treatments with extensive wear soft contact lenses, amniotic membrane transplantation, and tarsorrhaphy were treated with wet TE-PTK...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29764389/comparison-of-hyperdry-amniotic-membrane-transplantation-and-conjunctival-autografting-for-primary-pterygium
#3
Xin Pan, Daguang Zhang, Zhifang Jia, Zhehui Chen, Yuetian Su
BACKGROUND: The purpose of this study was to evaluate the safety and effectiveness of the hyperdry amniotic membrane transplantation compared with conjunctival autografting for the treatment of primary pterygium. METHODS: One hundred and forty-one eyes from 130 patients with primary pterygium were treated with excision followed by hyperdry amniotic membrane or conjunctival autografting after random selection. Seventy-nine eyes from 71 patients received hyperdry amniotic membrane transplantation (HD-AM group), and 62 eyes from 59 patients received conjunctival autografting (CG group)...
May 15, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29757854/re-amniotic-membrane-grafts-to-reduce-pterygium-recurrence
#4
Charudutt Kalamkar, Jaideep Singh Popli, Amrita Mukherjee
No abstract text is available yet for this article.
May 1, 2018: Cornea
https://www.readbyqxmd.com/read/29746328/does-mucous-membrane-grafting-have-a-clear-advantage-over-amniotic-membrane-grafting-in-refractory-giant-papillae
#5
Josephine S Christy, Fredrick Mouttapa, Purushothama Rajkumar
No abstract text is available yet for this article.
May 8, 2018: Cornea
https://www.readbyqxmd.com/read/29719651/combined-tenonplasty-and-scleral-graft-for-refractory-pseudomonas-scleritis-following-pterygium-removal-with-mitomycin-c-application
#6
Heidar Siatiri, Nima Mirzaee-Rad, Shruti Aggarwal, Ahmad Kheirkhah
Purpose: To report a surgical approach combining scleral patch graft and tenonplasty for successful management of refractory Pseudomonas scleritis following pterygium removal with mitomycin C application. Case Report: A 75-year-old diabetic woman with a history of prior pterygium excision and mitomycin C application developed infectious necrotizing scleritis caused by Pseudomonas aeruginosa . Owing to progression of scleritis despite medical management, the patient underwent surgery...
April 2018: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29707747/comparison-of-human-denuded-amniotic-membrane-and-porcine-small-intestine-submucosa-as-scaffolds-for-limbal-mesenchymal-stem-cells
#7
Liliana I Sous Naasani, Cristiano Rodrigues, Jéssica Gonçalves Azevedo, Aline F Damo Souza, Silvio Buchner, Márcia R Wink
Blinding corneal scarring is usually treated with allogeneic graft tissue. Nevertheless, the global shortage of donors leaves millions of patients in need of therapy. Traditional tissue engineering strategies involves the combination of cells, growth factors, and scaffolds that can supply cellular biological components allowing to restore the tissue function. The mesenchymal stem cells found in the limbal stroma (L-MSCs) have a self-renewal potential for multilineage differentiation. Thus, in this work we compared the potential of human amniotic membrane (hAM) and porcine small intestine submucosa (SIS) as scaffolds for L-MSCs, aiming at potential applications in corneal regeneration...
April 29, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29702971/plasma-rich-in-growth-factors-membrane-as-coadjuvant-treatment-in-the-surgery-of-ocular-surface-disorders
#8
Ronald M Sanchez-Avila, Jesús Merayo-Lloves, Ana C Riestra, Silvia Berisa, Carlos Lisa, José Alfonso Sánchez, Francisco Muruzabal, Gorka Orive, Eduardo Anitua
To evaluate the safety and efficacy of the surgical use of plasma rich in growth factors fibrin membrane (mPRGF) in different ocular surface pathologies.Fifteen patients with different corneal and conjunctival diseases were included in the study. Patients were grouped according to the use of mPRGF as graft (corneal and/or conjunctival) or dressing; they were also grouped according to the surgical subgroup of intervention (persistent corneal ulcer [PCU], keratoplasty, superficial keratectomy, corneal perforation, and pterygium)...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29686390/tissue-remodeling-after-ocular-surface-reconstruction-with-denuded-amniotic-membrane
#9
Jing Jie, Jie Yang, Hui He, Jianlan Zheng, Wenyan Wang, Liying Zhang, Zhiyuan Li, Jingyao Chen, M Vimalin Jeyalatha, Nuo Dong, Huping Wu, Zuguo Liu, Wei Li
Amniotic membrane (AM) has been widely used as a temporary or permanent graft in the treatment of various ocular surface diseases. In this study, we compared the epithelial wound healing and tissue remodeling after ocular surface reconstruction with intact amniotic membrane (iAM) or denuded amniotic membrane (dAM). Partial limbal and bulbar conjunctival removal was performed on New Zealand rabbits followed by transplantation of cryo-preserved human iAM or dAM. In vivo observation showed that the epithelial ingrowth was faster on dAM compared to iAM after AM transplantation...
April 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29658366/a-novel-case-using-femtosecond-laser-acquired-lenticule-for-recurrent-pterygium-case-report-and-literature-review
#10
Om Prakash Pant, Ji-Long Hao, Dan-Dan Zhou, Fan Wang, Cheng-Wei Lu
Small incision lenticule extraction (SMILE) is a minimally invasive, safe and flapless femtosecond laser technique used mainly to correct myopia through extraction of a corneal lenticule. Lenticules obtained in this way are transparent and of high quality, and thus, can be used to treat other corneal diseases. A 65-year-old male patient presented with recurrent pterygium complicated by thin cornea. The patient was treated surgically using a SMILE-extracted lenticule to avoid further complications and to maintain eyeball integrity...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29657982/epithelial-ingrowth-following-laser-in-situ-keratomileusis-lasik-prevalence-risk-factors-management-and-visual-outcomes
#11
REVIEW
Darren Shu Jeng Ting, Sathish Srinivasan, Jean-Pierre Danjoux
The number of laser in situ keratomileusis (LASIK) procedures is continuing to rise. Since its first application for correcting simple refractive errors over 25 years ago, the role of LASIK has extended to treat other conditions, including postkeratoplasty astigmatism/ametropia, postcataract surgery refractive error and presbyopia, among others. The long-term effectiveness, predictability and safety have been well established by many large studies. However, due to the creation of a potential interface between the flap and the underlying stroma, interface complications such as infectious keratitis, diffuse lamellar keratitis and epithelial ingrowth may occur...
2018: BMJ open ophthalmology
https://www.readbyqxmd.com/read/29608393/histological-comparison-of-new-bone-formation-using-amnion-membrane-graft-vs-resorbable-collagen-membrane-an-animal-study
#12
Soheil Koushaei, Mohammad Hassan Samandari, Sayed Mohammad Razavi, Ahad Khoshzaban, Shahriar Adibi, Payam Varedi
The purpose of this article was to evaluate the bone induction effects of an amnion membrane protected graft compared with collagen membrane protected graft in repair of tibial bony defects in dogs. This study was performed using the tibial bone of dogs. After the removal of periostium, similar holes were made with a 16 mm trephine drill (38 holes in total). For the study group ten holes were covered by absorbable collagen and 16 holes by amniotic membrane. In control group 12 holes were made and were covered by the overlying soft tissue...
April 2, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29576892/amniotic-membrane-transplantation-in-surgical-treatment-of-conjunctival-melanoma-long-term-results
#13
Melis Palamar, Banu Yaman, Taner Akalın, Ayse Yağcı
Objectives: To investigate the long-term efficacy and results of surgical management of conjunctival melanoma reconstructed with amniotic membrane transplantation. Materials and Methods: Conjunctival melanoma in 10 patients (5 female, 5 male) was totally excised with adjunctive cryotherapy to the surgical margins, corneal epitheliectomy with absolute alcohol in cases of corneal involvement, lamellar sclerectomy in cases with episcleral involvement, and ocular surface grafting with cryopreserved amniotic membrane...
February 2018: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29569168/development-of-decellularized-amniotic-membrane-as-a-bioscaffold-for-bone-marrow-derived-mesenchymal-stem-cells-ultrastructural-study
#14
Radwa Ayman Salah, Ihab K Mohamed, Nagwa El-Badri
Developing effective stem cell-based therapies requires the design of complex in vitro culture systems for accurate representation of the physiological stem cell niche. Human amniotic membrane (hAM) has been successfully used in clinical grafting applications due to its unique biological and regenerative properties. Decellularized hAM (d-hAM) has been previously applied to the culture of human bone marrow mesenchymal stem cells (hMSCs), promoting their expansion and differentiation into adipogenic and osteogenic lineages...
March 22, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29536639/type-severity-management-and-outcome-of-ocular-and-adnexal-firework-related-injuries-the-rotterdam-experience
#15
Sonja Frimmel, J Tjeerd de Faber, Rene J Wubbels, Christoph Kniestedt, Dion Paridaens
PURPOSE: To study the type, severity, management and outcome of firework-related adnexal and ocular injuries during New Year's Eve festivities. METHODS: A retrospective analysis of 123 injured patients (143 eyes) treated at the Rotterdam Eye Hospital between 2009 and 2013. All ages were included and analysed according to age, gender, active participant or bystander, laterality, location, dimension and severity of injury. Outcome parameter was the final best-corrected visual acuity...
March 13, 2018: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29489514/terrien-marginal-degeneration-complicated-by-a-corneoscleral-cyst
#16
Tian Loon Lee, Hwei Yee Lee, Johnson Choon Hwai Tan
PURPOSE: To describe a case of inflammatory Terrien's marginal degeneration (TMD) in a young Chinese girl complicated by a corneoscleral cyst who ultimately underwent surgical treatment with cyst excision, corneal patch graft and amniotic membrane graft. METHODS: Case report. RESULTS: A 12-year-old Chinese female presented initially with redness and discharge from her right eye with bilateral superior corneal thinning. The patient was diagnosed with TMD...
May 2018: Cornea
https://www.readbyqxmd.com/read/29483819/risks-of-using-sterilization-by-gamma-radiation-the-other-side-of-the-coin
#17
REVIEW
C Randall Harrell, Valentin Djonov, Crissy Fellabaum, Vladislav Volarevic
The standard sterilization method for most medical devices over the past 40 years involves gamma irradiation. During sterilization, gamma rays efficiently eliminate microorganisms from the medical devices and tissue allografts, but also significantly change molecular structure of irradiated products, particularly fragile biologics such as cytokines, chemokines and growth factors. Accordingly, gamma radiation significantly alters biomechanical properties of bone, tendon, tracheal, skin, amnion tissue grafts and micronized amniotic membrane injectable products...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29481675/human-amniotic-membrane-for-the-prevention-of-intradural-spinal-cord-adhesions-retrospective-review-of-its-novel-use-in-a-case-series-of-14-patients
#18
Corey T Walker, Jakub Godzik, U Kumar Kakarla, Jay D Turner, Alexander C Whiting, Peter Nakaji
BACKGROUND: Tethering after spinal surgery is caused by adhesions that arise from intradural tissue manipulation. Microsurgical detethering is the only treatment for symptomatic patients, but retethering occurs commonly and no treatment is widely available to prevent this complication. OBJECTIVE: To apply human amniotic membrane (HAM) grafts, which are immune-privileged and known to possess antifibrogenic properties, in patients requiring microsurgical detethering...
February 22, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29440793/use-of-an-amniotic-membrane-as-a-novel-barrier-in-a-tooth-with-a-questionable-prognosis
#19
Kanakamedala Anil Kumar, Muppalla Chakravarthy, Shalini Selvarajan, Theyagarajan Ramakrishnan, Geetha Ari
The chief goal of combination therapy using guided tissue regeneration along with bone grafts is to optimally and predictably regenerate the periodontal attachment apparatus. The evolution of regenerative therapy along with careful patient selection and treatment planning can have positive results even in cases which are not ideal. The present case report describes a tooth with a questionable prognosis treated successively by endodontic then periodontal therapy using an amniotic membrane along with a bone graft to treat an intrabony defect...
May 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29429293/-deep-anterior-lamellar-keratoplasty-combined-with-antiviral-therapy-in-the-treatment-of-severe-herpes-necrotizing-stromal-keratitis
#20
S X Li, J T Wang, Y Jiang, X Wang, W Y Shi
Objective: To evaluate the efficacy of modified deep lamellar keratoplasty (DLKP) combined with antiviral medications for severe herpes necrotizing stromal keratitis. Methods: Retrospective case series study. Modified DLKP was performed in combination with antiviral medications in fifty patients (50 eyes) with severe necrotizing stromal keratitis, which was unresponsive to systemic and topical antiviral treatment for 1 week, at Shandong Eye Hospital. Before surgery, the operated eyes were examined using slit-lamp microscopy...
February 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
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