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Amniotic skin substitute

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https://www.readbyqxmd.com/read/29736806/amniotic-membrane-seeded-fetal-fibroblasts-as-skin-substitute-for-wound-regeneration
#1
Ehsan Taghiabadi, Bahareh Beiki, Nasser Aghdami, Amir Bajouri
Various natural and synthetic biomaterials have been applied as skin substitutes for regenerating damaged skin. Here, we describe a straightforward method for fabrication of a tissue-engineered skin substitute by seeding human fetal fibroblasts on acellular human amniotic membrane (HAM). Fetal fibroblasts are achieved from the skin of normal and non-macerated fetus of 11-14 weeks old after spontaneous pregnancy termination. Acellular HAM is obtained by separation of the outer membrane of the chorion and removing its epithelial cells...
May 8, 2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29718653/silk-sponges-ornamented-with-placenta-derived-extracellular-matrix-augments-full-thickness-cutaneous-wound-healing-by-stimulating-neovascularization-and-cellular-migration
#2
Arun Prabhu Rameshbabu, Kamakshi Bankoti, Sayanti Datta, Elavarasan Subramani, Anupam Apoorva, Paulomi Ghosh, Priti Prasanna Maity, Padmavati Manchikanti, Koel Chaudhury, Santanu Dhara
Regeneration of full-thickness wound without scar formation is a multifaceted process which depends on in situ dynamic interactions between the tissue-engineered skin substitutes and newly formed reparative tissue. However, the majority of the tissue-engineered skin substitutes used so far in full-thickness wound healing cannot mimic the natural extracellular matrix (ECM) complexity and thus are incapable of providing a suitable niche for endogenous tissue repair. Herein, we demonstrated a simple approach to fabricate porous Hybrid Extracellular Matrix Sponges (HEMS) using Placental Extracellular Matrix (pECM) and Silk Fibroin (SF) for full-thickness wound healing...
May 2, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29687742/amniotic-membrane-and-its-epithelial-and-mesenchymal-stem-cells-as-an-appropriate-source-for-skin-tissue-engineering-and-regenerative-medicine
#3
Behrouz Farhadihosseinabadi, Mehrdad Farahani, Tahereh Tayebi, Ameneh Jafari, Felor Biniazan, Khashayar Modaresifar, Hamideh Moravvej, Soheyl Bahrami, Heinz Redl, Lobat Tayebi, Hassan Niknejad
One of the main goals of tissue engineering and regenerative medicine is to develop skin substitutes for treating deep dermal and full thickness wounds. In this regard, both scaffold and cell source have a fundamental role to achieve exactly the same histological and physiological analog of skin. Amnion epithelial and mesenchymal cells possess the characteristics of pluripotent stem cells which have the capability to differentiate into all three germ layers and can be obtained without any ethical concern. Amniotic cells also produce different growth factors, angio-modulatory cytokines, anti-bacterial peptides and a wide range of anti-inflammatory agents which eventually cause acceleration in wound healing...
April 24, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29529861/3d-protein-based-bilayer-artificial-skin-for-the-guided-scarless-healing-of-third-degree-burn-wounds-in-vivo
#4
Mazaher Gholipourmalekabadi, Alexander M Seifalian, Aleksandra M Urbanska, Mir Davood Omrani, John G Hardy, Zahra Madjd, Seyed Mahmoud Hashemi, Hossein Ghanbarian, Peiman Brouki Milan, Masoud Mozafari, Rui L Reis, Subhas C Kundu, Ali Samadikuchaksaraei
Severe burn injuries can lead to delays in healing and devastating scar formation. Attempts have been made to develop a suitable skin substitute for the scarless healing of such skin wounds. Currently, there is no effective strategy for completely scarless healing after the thermal injuries. In our recent work, we fabricated and evaluated a 3D protein-based artificial skin made from decellularized human amniotic membrane (AM) and electrospun nanofibrous silk fibroin (ESF) in vitro. We also characterized both biophysical and cell culture investigation to establish in vitro performance of the developed bilayer scaffolds...
April 18, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/28522073/cell-based-skin-substitutes-accelerate-regeneration-of-extensive-burn-wounds-in-rats
#5
Sadrollah Motamed, Ehsan Taghiabadi, Hojjat Molaei, Niloofar Sodeifi, Seyed Esmaeil Hassanpour, Saeed Shafieyan, Enzollah Azargashb, Fatemeh Farajzadeh-Vajari, Nasser Aghdami, Amir Bajouri
BACKGROUND: This study investigated the effects of amniotic membrane combined with adipose-derived stem cells or fetal fibroblasts on regenerating extensive burns in rats. METHODS: Third degree burns of 1100-1800 mm(2) were induced on 32 Sprague-Dawley rats. Burned sites were excised and randomly covered with Vaseline gauze (control), human amniotic membrane (HAM), human fetal fibroblasts seeded on HAM (HAM-FF), or human adipose-derived stem cells seeded on HAM (HAM-ASC), and followed by wound closure and histological assessments...
October 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28090513/an-update-and-review-of-cell-based-wound-dressings-and-their-integration-into-clinical-practice
#6
REVIEW
Austin Pourmoussa, Daniel J Gardner, Maxwell B Johnson, Alex K Wong
Chronic wounds affect over 4 million individuals and pose a significant burden to the US healthcare system. Diabetes, venous stasis, radiation or paralysis are common risk factors for chronic wounds. Unfortunately, the current standard of care (SOC) has a high relapse rate and these wounds continue to adversely affect patients' quality of life. Fortunately, advances in tissue engineering have allowed for the development of cell-based wound dressings that promote wound healing by improving cell migration and differentiation...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27158422/radiation-sterilization-of-tissue-allografts-a-review
#7
REVIEW
Rita Singh, Durgeshwer Singh, Antaryami Singh
Tissue substitutes are required in a number of clinical conditions for treatment of injured and diseased tissues. Tissues like bone, skin, amniotic membrane and soft tissues obtained from human donor can be used for repair or reconstruction of the injured part of the body. Allograft tissues from human donor provide an excellent alternative to autografts. However, major concern with the use of allografts is the risk of infectious disease transmission. Therefore, tissue allografts should be sterilized to make them safe for clinical use...
April 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/26779806/application-of-allogeneic-fibroblast-cultured-on-acellular-amniotic-membrane-for-full-thickness-wound-healing-in-rats
#8
Mahnaz Mahmoudi Rad, Fereshteh Talebpour Amiri, Mehri Mirhoseini, Maryam Ghasemi, Mansooreh Mirzaei, Nariman Mosaffa
OBJECTIVE: Utilization of the autologous and allogeneic skin substitutes seems to be a promising treatment option. In this study, the authors used amniotic membrane covered with cultured allogenic fibroblast as a skin substitute in the treatment of acute wounds. MATERIALS AND METHODS: Full-thickness wounds were created on rats' dorsum regions and treated with cultured allogenic fibroblast on an acellular amniotic membrane (AAM+F), an acellular amniotic membrane (AAM) alone, an allogenic fibroblast suspension (AFS), or normal saline as a control (C)...
January 2016: Wounds: a Compendium of Clinical Research and Practice
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