نتایج جستجو برای: amniotic membrane extract
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background: amniotic membrane derived stem cells (amscs) have considerable advantages to use in regenerative medicine and their anti- inflammatory effects, growth factor secretion and differentiation potential make them suitable candidates for stem cell therapy of nervous system. the developing and neonatal brain contains a spectrum of growth factors to direct development of endogenous and dono...
BACKGROUND Mesenchymal stem cells (MSCs) are ideal candidates for treatment of diseases. Amniotic membranes are an inexpensive source of MSCs (AM-MSC) without any donor site morbidity in cell therapy. Adipose tissue derived stem cells (ASCs) are also suitable cells for cell therapy. There is discrepancy in CD271 expression among MSCs from different sources. In this study, the characteristics of...
UNLABELLED The advent of amniotic membrane (AM) and limbal stem cell grafts have transformed the treatment of diseases resulting in ocular surface failure. The current success may be attributed to cryopreservation of human AM, which retains its properties and renders the amniotic epithelial cells nonviable and thus nonimmunogenic. Its unique properties have prompted its application in a large n...
OBJECTIVE To use amniotic membranes as a buffer between the cornea and radioactive eye plaques. METHODS Six melanomas were treated with ophthalmic plaque radiation therapy. Plaque-tumor localization required that a portion of the gold plaque touch the cornea during treatment. To enhance patient comfort and protect the cornea, an (0.1-mm-thick) amniotic membrane was interposed between the meta...
The term ocular surface disorders indicate a close relationship between the conjunctival and corneal epithelium in many corneal and external diseases. The human amniotic membrane has a thick basement membrane and an avascular stromal matrix and its first ophthalmic use was reported by deRoth for conjunctival surface reconstruction. It was subsequently used for different ophthalmic reasons. Amni...
Background/aims—The use of “fresh” (hypothermically stored) and frozen amniotic membrane (AM) was compared in a patient with cicatricial pemphigoid with stem cell failure. The viability of both “fresh” and frozen AM epithelial cells was assessed after storage. Methods—AM was stored at either +4°C (“fresh”) or at −80°C (frozen). A “fresh” graft was applied to the cornea following superficial ker...
dear editor, i read with interest the article on outpatient management of burn wounds published in a recent issue of the ijms . 1 there are many questions that arise which are worth mentioning. under the methodology section, no description was provided on how patients were randomized into the two treatment arms and, therefore, it is not possible to assess how confounding variables were controll...
PURPOSE Severe chemical burns can cause necrosis of ocular surface tissues following the infiltration of inflammatory cells. It has been shown that amniotic membrane transplantation (AMT) is an effective treatment for severe chemical burns, but the phenotypes of cells that infiltrate the amniotic membrane and the clinical significance of these cellular infiltrations have not previously been rep...
Biological dressings including human amniotic membrane have been used to cover wounds or skin defects and enhance healing by providing a structural format to the underlying tissue. Human amniotic membrane was first used as wound dressing in 1910 by JS Davis [1]. The amniotic membrane obtained from human placenta possesses most of the characteristics of an ideal skin substitute even after proces...
Tracing the precise developmental origin of amnion and amnion-derived stem cells is still challenging and depends chiefly on analyzing powerful genetic model amniotes like mouse. Profound understanding of the fundamental differences in amnion development in both the disc-shaped primate and human embryo and the cup-shaped mouse embryo is pivotal in particular when sampling amniotic membrane from...
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