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Amniotic membrane graft

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https://www.readbyqxmd.com/read/29333918/modified-second-stage-hughes-tarsoconjunctival-reconstruction-for-lower-eyelid-defects
#1
Shruti Aggarwal, Christopher T Shah, Maria Kirzhner
To describe a novel technique utilizing an amniotic membrane graft (AMT) to create the mucocutaneous portion of the lower eyelid margin in a modified Hughes eyelid reconstruction for secondary revision or prevention of a hyperemic, hypertrophic conjunctival margin with excessive discharge. This was a retrospective, non-comparative interventional study. Thirty consecutive patients who underwent a modified Hughes reconstruction were included. The first step of the reconstruction was performed in a standard fashion using a tarsoconjunctival flap from the ipsilateral upper eyelid...
January 15, 2018: Orbit
https://www.readbyqxmd.com/read/29245335/spontaneous-corneal-perforation-in-terrien-s-marginal-degeneration-in-childhood-a-case-report
#2
Junkyu Chung, Kyung Hyun Jin, Jaheon Kang, Tae Gi Kim
RATIONALE: Terrien's marginal corneal degeneration (TMD) is characterized by progressive peripheral corneal thinning. It appears primarily above the age of 40 years and is rare at younger ages. Spontaneous corneal perforation in TMD is a rare, but serious complication that may occur in childhood. PATIENT CONCERNS: This review presents the case of a 16-year-old girl presented with blurred vision in the right eye on awakening in the morning. Slit-lamp examination revealed superior corneal thinning with a corneal perforation...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29234230/traumatic-eye-ball-luxation-a-stepwise-approach-to-globe-salvage
#3
Himika Gupta, Srivalli Natarajan, Sushrut Vaidya, Shipra Gupta, Dinesh Shah, Raj Merchant, Shrikant Deshpande
Craniofacial trauma is often associated with orbital and ocular injuries. We report a case of a 21-year-old male with motor vehicular accident, orbital roof blow-in fracture, cerebrospinal fluid (CSF) leak, and left sided globe luxation with corneal abrasion and complete conjunctival denuding. The patient was managed by a multispeciality team and the eyeball was protected by amniotic membrane graft (AMG) biological dressing with novel use of inverted sterile metallic bowl as mechanical protection till the patient stabilized...
October 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/29225157/the-effect-of-amniotic-membrane-grafting-on-healing-and-wound-strength-after-strabismus-surgery-in-a-rabbit-model
#4
Jeffrey B Kennedy, Marissa B Larochelle, Michelle G Pedler, J Mark Petrash, Robert W Enzenauer
BACKGROUND: Amniotic membrane grafts (AMGs) are used, with mixed results, as a platform for ocular healing and to reduce pathologic scarring. This study evaluated wound tensile strength and histopathologic changes after strabismus surgery with AMGs in 20 New Zealand white rabbits. METHODS: All subjects underwent 4 mm inferior rectus hang-back recessions to both eyes. The right eyes served as controls. Ten left eyes (group 1) received processed dehydrated amniotic membrane allografts (Ambiodry2, IOP Inc, Costa Mesa, CA) and ten left eyes (group 2) received cryopreserved human amniotic membrane allografts (AmnioGraft, Bio-Tissue, Miami, FL) between the sclera and muscle insertion and between the muscle and repositioned conjunctiva...
December 7, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/29197837/bilateral-ocular-surface-squamous-neoplasia-with-bilateral-periocular-basal-cell-carcinoma-in-a-case-of-xeroderma-pigmentosum
#5
Rohit Agarwal, Bhavna Chawla, Mohamed Ibrahime Asif, Amar Pujari
Xeroderma pigmentosum (XP) is an autosomal recessive disorder associated with multiple oculocutaneous manifestations.We discuss a unique case of XP having bilateral ocular surface squamous neoplasia (OSSN) and periocular basal cell carcinoma. In the right eye, a large OSSN mass involving the ocular surface extensively along with intraocular invasion was noted, whereas in the left eye, the tumour mass was involving the limbus, and extending up to three clock hours. Because of extensive disease in the right eye, orbital exenteration was performed, and for the left eye, a wide excision of the mass with triple freeze thaw cryo application to the margins followed by amniotic membrane grafting was done...
December 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29178172/anti-adhesion-therapy-following-operative-hysteroscopy-for-treatment-of-female-subfertility
#6
REVIEW
Jan Bosteels, Steven Weyers, Thomas M D'Hooghe, Helen Torrance, Frank J Broekmans, Su Jen Chua, Ben Willem J Mol
BACKGROUND: Observational evidence suggests a potential benefit with several anti-adhesion therapies in women undergoing operative hysteroscopy (e.g. insertion of an intrauterine device or balloon, hormonal treatment, barrier gels or human amniotic membrane grafting) for decreasing intrauterine adhesions (IUAs). OBJECTIVES: To assess the effectiveness of anti-adhesion therapies versus placebo, no treatment or any other anti-adhesion therapy, following operative hysteroscopy for treatment of female subfertility...
November 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29177171/grafting-with-cryopreserved-amniotic-membrane-versus-conservative-wound-care-in-treatment-of-pressure-ulcers-a-randomized-clinical-trial
#7
Mehdi Dehghani, Negar Azarpira, Vahid Mohammad Karimi, Hamid Mossayebi, Elaheh Esfandiari
Objective: To compare the healing process of pressure ulcers treated with cryopreserved human amniotic membrane allograft and routine pressure ulcer care in our hospital. Methods: From January 2012 to December 2013, in a prospective randomized clinical trial (IRCT201612041335N2), 24 patients with second and third stage of pressure ulcers were enrolled in this study. All patients needed split-thickness skin grafts for pressure ulcer-wound coverage. Selected patients had symmetric ulcers on both upper and lower extremities...
October 2017: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/29176451/comparison-of-pterygium-recurrence-rates-among-different-races-and-ethnicities-after-primary-pterygium-excision-by-surgeons-in-training
#8
Giovanni Campagna, Matthew Adams, Li Wang, Sumitra Khandelwal, Zaina Al-Mohtaseb
PURPOSE: To evaluate the impact of race and ethnicity, surgical technique, and level of surgeon training on recurrence rates after primary pterygium excision. METHODS: A retrospective review of patients who underwent primary pterygium excision at our academic institution was performed. The surgical technique-conjunctival autografting (CAG) or amniotic membrane grafting (AMG)-was chosen at the attending surgeon's discretion, and all surgeries were performed by surgeons in training...
November 22, 2017: Cornea
https://www.readbyqxmd.com/read/29133658/role-of-amniotic-membrane-and-full-thickness-skin-graft-in-reconstruction-of-kissing-nevus-of-eyelids
#9
Manpreet Singh, Natasha Gautam, Manpreet Kaur, Zoramthara Zadeng
A 20-year-old girl presented with a large pigmented lesion over the temporal aspect of left lateral canthus involving the lateral one-third of both eyelids, since birth. A slow increase in its size had been noticed for the past 2 years. On examination, a hairy nevus measuring 34 mm × 22 mm was noticed involving left eyelid skin, the mucocutaneous junction (MCJ), palpebral conjunctiva, and lateral canthus. The surface was irregularly thick and covered with long, thick, and pigmented hairs. A clinical diagnosis of kissing nevus of eyelids was kept and a surgical resection with reconstruction planned...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29107055/native-and-synthetic-scaffolds-for-limbal-epithelial-stem-cell-transplantation
#10
REVIEW
Kim N Nguyen, Samantha Bobba, Alexander Richardson, Mijeong Park, Stephanie L Watson, Denis Wakefield, Nick Di Girolamo
Limbal stem cell deficiency (LSCD) is a complex blinding disease of the cornea, which cannot be treated with conventional corneal transplants. Instead, a stem cell (SC) graft is required to replenish the limbal epithelial stem cell (LESC) reservoir, which is ultimately responsible for regenerating the corneal epithelium. Current therapies utilize limbal tissue biopsies that harbor LESCs as well as tissue culture expanded cells. Typically, this tissue is placed on a scaffold that supports the formation of corneal epithelial cell sheets, which are then transferred to diseased eyes...
November 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29047409/novel-approach-to-gastric-mucosal-defect-repair-using-fresh-amniotic-membrane-allograft-in-dogs-experimental-study
#11
Haithem A Farghali, Naglaa A AbdElKader, Marwa S Khattab, Huda O AbuBakr
BACKGROUND: Gastric mucosal defect could result from several causative factors including the use of nonsteroidal anti-inflammatory drugs, Helicobacter pylori infection, gastrointestinal and spinal cord diseases, and neoplasia. This study was performed to achieve a novel simple, inexpensive, and effective surgical technique for the repair of gastric mucosal defect. METHODS: Six adult male mongrel dogs were divided into two groups (three dogs each). In the control positive group (C + ve), dogs were subjected to surgical induction of gastric mucosal defect and then treated using traditional medicinal treatment for such a condition...
October 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28976415/amniotic-membrane-grafts-to-reduce-pterygium-recurrence
#12
Ronald Rosen
PURPOSE: To demonstrate the long-term outcome of pterygium surgery with adjunctive amniotic membrane transplantation (AMT) and intraoperative mitomycin C (MMC) in a large case series. METHODS: Medical records were retrieved for this noncomparative retrospective study of all patients who had pterygium excision with adjunctive AMT and intraoperative MMC, from October 2010 to June 2016 with at least 6 months of follow-up. RESULTS: There were a total of 556 eyes of 535 patients (291 males and 244 females) with average age of 51...
October 2, 2017: Cornea
https://www.readbyqxmd.com/read/28967074/palladium-103-plaque-radiation-therapy-for-ciliary-body-melanoma-through-a-functioning-glaucoma-filtering-bleb
#13
Arif H K Pathan, Alexander Barash, Lawrence B Tena, Paul T Finger
PURPOSE: To provide a clinical description of the long-term outcome of a 103Pd plaque-irradiated ciliary body melanoma with extrascleral extension while attempting to preserve a subadjacent glaucoma filtering bleb. METHODS: A 75-year-old woman with pseudoexfoliative glaucoma for 17 years, 16 years status post argon laser trabeculoplasty, and 15 years status post trabeculectomy in the left eye, was diagnosed with an ipsilateral ciliary body melanoma with visible extrascleral extension...
September 23, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28947445/a-study-protocol-for-a-multicentre-randomised-clinical-trial-evaluating-the-safety-and-feasibility-of-a-bioengineered-human-allogeneic-nanostructured-anterior-cornea-in-patients-with-advanced-corneal-trophic-ulcers-refractory-to-conventional-treatment
#14
Miguel González-Andrades, Rosario Mata, María Del Carmen González-Gallardo, Santiago Medialdea, Salvador Arias-Santiago, Juliana Martínez-Atienza, Antonio Ruiz-García, Lorena Pérez-Fajardo, Antonio Lizana-Moreno, Ingrid Garzón, Antonio Campos, Miguel Alaminos, Gloria Carmona, Natividad Cuende
INTRODUCTION: There is a need to find alternatives to the use of human donor corneas in transplants because of the limited availability of donor organs, the incidence of graft complications, as well as the inability to successfully perform corneal transplant in patients presenting limbal deficiency, neo-vascularized or thin corneas, etc. We have designed a clinical trial to test a nanostructured fibrin-agarose corneal substitute combining allogeneic cells that mimics the anterior human native cornea in terms of optical, mechanical and biological behaviour...
September 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28941146/tracheal-repair-with-acellular-human-amniotic-membrane-in-a-rabbit-model
#15
Lianna Ferrari Jorge, Julio C Francisco, Nelson Bergonse, Cristina Baena, Katherine Athayde T Carvalho, Eltyeb Abdelwahid, Jose Rocha Faria Neto, Luiz Felipe Pinho Moreira, Luiz Cesar Guarita-Souza
Surgical correction of tracheal stenosis is still a complex and challenging procedure. Acellular human amniotic membranes (AHAM) represent a promising biomaterial source for tissue regeneration. The aim of this study was to evaluate whether AHAM grafts improve tissue regeneration of the trachea in a rabbit model of tracheostomy. Twenty rabbits were randomized into 2 groups. Animals in the control group underwent surgical tracheostomy only, and animals in the AHAM group underwent surgical tracheostomy and received an AHAM graft that covered the defect site...
September 22, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28933697/enhanced-skin-regeneration-using-a-novel-amniotic-derived-tissue-graft
#16
Katie C Mowry, Paul P Bonvallet, Susan L Bellis
BACKGROUND: Chronic and recalcitrant wounds present a significant therapeutic challenge. Amniotic tissues contain many regenerative cytokines, growth factors, and extracellular matrix molecules including proteoglycans, hyaluronic acid, and collagens I, III, and IV. Dehydrated amnion/chorion grafts are currently used to treat a variety of wounds such as diabetic foot ulcers and burns. OBJECTIVE: The investigators hypothesized that processing methodologies, dehydration, and hypothermic processing and storage of amniotic tissues would affect overall quality of wound healing; they compared dehydrated amnion/chorion (dHACM) grafts to a novel hypothermically stored amniotic membrane (HSAM) graft in a full-thickness rat wound model...
September 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28912992/giant-conjunctival-nevus-in-a-12-year-old-child
#17
Edit Tóth-Molnár, Eszter Vizvári, Ákos Skribek, András Vörös
We describe a case of a giant conjunctival nevus presented in a 12-year-old girl with suspicious clinicomorphological appearance. The lesion was noticed by the parents at the age of 3 years as a "fleshy spot" on the bulbar conjunctiva. The lesion remained unchanged until approx. 6 months before recent admission. On slit-lamp examination, a large conjunctival lesion with variegate pigmentation and indistinct margins was detected on the superonasal part of the bulbar conjunctiva of the left eye. Intralesional cysts and vessels were detected with AS-OCT examination...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/28893657/the-effect-of-adjuvant-treatment-to-prevent-and-treat-intrauterine-adhesions-a-network-meta-analysis-of-randomized-controlled-trials
#18
REVIEW
Yu Yan, Dongmei Xu
Intrauterine adhesions (IUA) can lead to partial or complete closure of the uterine cavity, which may result in symptoms including abnormal menstruation, infertility, and pelvic pain. A network meta-analysis was performed to assess the effect of adjuvant therapy on the prevention and treatment of intrauterine adhesions. We searched electronic databases, including PubMed, EmBase, and the Cochrane Library, up to May 5, 2017 without language restrictions. The primary outcomes in the present analysis were the rate of IUAs for prevention and the rate of IUA recurrence for treatment...
September 8, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28835428/oral-mucosal-grafting-combined-with-tenonplasty-for-ocular-surface-and-lid-margin-reconstruction-in-an-atypical-sectorial-chemical-burn
#19
Swati Singh, Purvasha Narang, Vikas Mittal
A 46-year-old woman presented with chemical injury in both eyes after the instillation of undefined eye-drops prescribed by quack. She had an atypical presentation in the form of bilateral severe necrosis of both lids and whole palpebral conjunctiva. Extensive debridement with conjunctival epitheliectomy, tenonplasty and amniotic membrane transplantation (AMT) was performed. Characteristic differences from typical chemical injuries were a sectorial involvement of ocular surface and keratinisation over distorted lid margins...
August 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28835072/-advances-in-preparation-and-clinical-application-of-amniotic-membrane-graft
#20
S Q Zheng, T S Chen, S Z Ji, P F Luo, S C Xiao
Amniotic membrane has been used as wound dressing for more than 100 years. With the development of the preservation and preparation techniques, amniotic membrane is widely used in ophthalmology, burns, plastic surgery, dentistry, and neurosurgery. In recent years, as more and more amniotic membrane is used in chronic wounds, it will be a new treatment method for wounds. This paper is a brief review about advances in preparation and clinical application of amniotic membrane graft.
August 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
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