Atomic force microscopy in the production of a biovital skin graft based on human acellular dermal matrix produced in-house and in vitro cultured human fibroblasts

2017 ◽  
Vol 106 (2) ◽  
pp. 726-733 ◽  
Author(s):  
Wojciech Łabuś ◽  
Justyna Glik ◽  
Agnieszka Klama-Baryła ◽  
Diana Kitala ◽  
Małgorzata Kraut ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Human Fibroblasts ◽  
Acellular Dermal Matrix ◽  
Dermal Matrix ◽  
Force Microscopy ◽  
Atomic Force ◽  
Cultured Human Fibroblasts ◽  
Acellular Dermal ◽  
Human Acellular Dermal Matrix

scholarly journals Development and AFM study of porous scaffolds for wound healing applications

2004 ◽  
Vol 18 (4) ◽  
pp. 587-596 ◽  
Author(s):  
T. A. Doneva ◽  
H. B. Yin ◽  
P. Stephens ◽  
W. R. Bowen ◽  
D. W. Thomas
Keyword(s):  
Atomic Force Microscopy ◽  
Wound Healing ◽  
Human Fibroblasts ◽  
Three Dimensional ◽  
Positive Influence ◽  
Porous Scaffolds ◽  
Force Microscopy ◽  
Cellular Assays ◽  
Atomic Force

An engineering approach to the development of biomaterials for promotion of wound healing emphasises the importance of a well‒controlled architecture and concentrates on optimisation of morphology and surface chemistry to stimulate guidance of the cells within the wound environment. A series of three‒dimensional porous scaffolds with 80–90% bulk porosity and fully interconnected macropores were prepared from two biodegradable materials – cellulose acetate (CA) and poly (lactic‒co‒glycolic acid) (PLGA) through the phase inversion mechanism of formation. Surface morphology of obtained scaffolds was determined using atomic force microscopy (AFM) in conjunction with optical microscopy. Scanning Electron Microscopy (SEM) was applied to characterise scaffolds bulk morphology. Biocompatibility and biofunctionality of the prepared materials were assessed through a systematic study of cell/material interactions using atomic force microscopy (AFM) methodologies together within vitrocellular assays. Preliminary data with human fibroblasts demonstrated a positive influence of both scaffolds on cellular attachment and growth. The adhesion of cells on both biomaterials were quantified by AFM force measurements in conjunction with a cell probe technique since, for the first time, a fibroblast probe has been successfully developed and optimal conditions of immobilisation of the cells on the AFM cantilever have been experimentally determined.

scholarly journals In Vitro Analysis of Histology, Mechanics, and Safety of Radiation-free Pre-hydrated Human Acellular Dermal Matrix

2020 ◽  
Vol 23 (6) ◽  
pp. 635
Author(s):  
Ji Young Kim ◽  
Kyung Min Yang ◽  
Ji Hyun Youn ◽  
Heejun Park ◽  
Hyung Min Hahn ◽  
...  
Keyword(s):  
Acellular Dermal Matrix ◽  
Dermal Matrix ◽  
Vitro Analysis ◽  
Acellular Dermal ◽  
Human Acellular Dermal Matrix ◽  
In Vitro Analysis

scholarly journals Imaging and force-distance analysis of human fibroblasts in vitro by atomic force microscopy

Cytometry ◽  
1999 ◽  
Vol 36 (3) ◽  
pp. 254-264 ◽  
Author(s):  
Gillian R. Bushell ◽  
Colm Cahill ◽  
Frank M. Clarke ◽  
Christopher T. Gibson ◽  
Sverre Myhra ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Human Fibroblasts ◽  
Force Microscopy ◽  
Distance Analysis ◽  
Atomic Force

scholarly journals Acellular dermal matrix as filler in breast-conserving surgery: warnings for a careful use

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Gianluca Franceschini ◽  
Riccardo Masetti
Keyword(s):  
Acellular Dermal Matrix ◽  
Breast Conserving Surgery ◽  
Human Origin ◽  
Dermal Matrix ◽  
Adequate Knowledge ◽  
Aesthetic Results ◽  
Dermal Matrices ◽  
Acellular Dermal ◽  
Human Acellular Dermal Matrix ◽  
Host Tissues

AbstractAcellular dermal matrices are biological materials of porcine, bovine, or human origin used as scaffold for reconstructive purpose in plastic surgery; these materials are well-tolerated and safely integrated in host tissues without causing resorption, contracture, and encapsulation thanks to their low antigenicity.Recently, human acellular dermal matrix has been used as a filler in breast-conserving surgery to improve aesthetic results. Adequate knowledge of biomaterials properties, appropriate skill, and careful compliance with some specific recommendations are mandatory in order to optimize outcomes and obtain a work of success.

scholarly journals Visualization by atomic force microscopy of tobacco mosaic virus movement protein–RNA complexes formed in vitro

2001 ◽  
Vol 82 (6) ◽  
pp. 1503-1508 ◽  
Author(s):  
O. I. Kiselyova ◽  
I. V. Yaminsky ◽  
E. M. Karger ◽  
O. Yu. Frolova ◽  
Y. L. Dorokhov ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Movement Protein ◽  
Structural Conversion ◽  
Force Microscopy ◽  
Rna Transcripts ◽  
Atomic Force ◽  
Rna Complexes

The structure of complexes formed in vitro by tobacco mosaic virus (TMV)-coded movement protein (MP) with TMV RNA and short (890 nt) synthetic RNA transcripts was visualized by atomic force microscopy on a mica surface. MP molecules were found to be distributed along the chain of RNA and the structure of MP–RNA complexes depended on the molar MP:RNA ratios at which the complexes were formed. A rise in the molar MP:TMV RNA ratio from 20:1 to 60–100:1 resulted in an increase in the density of the MP packaging on TMV RNA and structural conversion of complexes from RNase-sensitive ‘beads-on-a-string’ into a ‘thick string’ form that was partly resistant to RNase. The ‘thick string’-type RNase-resistant complexes were also produced by short synthetic RNA transcripts at different MP:RNA ratios. The ‘thick string’ complexes are suggested to represent clusters of MP molecules cooperatively bound to discrete regions of TMV RNA and separated by protein-free RNA segments.

Construction of Tissue Engineered Skin with VEGF-Modified Human Mesenchymal Stem Cells and Acellular Dermal Matrix

2009 ◽  
Vol 610-613 ◽  
pp. 1298-1301
Author(s):  
Xiang Rong Zhang ◽  
De Wu Liu ◽  
Guang Hua Guo ◽  
Yan Peng
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Gradient Centrifugation ◽  
Human Mesenchymal Stem Cells ◽  
Acellular Dermal Matrix ◽  
Culture Method ◽  
Gene Encoding ◽  
Dermal Matrix ◽  
Acellular Dermal

The development of skin tissue engineering provides a noninvasive method for skin restoration. Unfortunately, the lack of a vascular plexus leads to greater time for vascularization compared with native skin autografts and contributes to graft failure. Our purpose was to construct tissue-engineered skin with VEGF- modified human bone marrow mesenchymal stem cells (hMSCs) as well as acellular dermal matrix(ADM) in vitro , Thus by increased vascular endothelial growth factor expression, which could prospectively improve vascularization of tissue-engineered skin for wound healing applications. To reach this aim, hMSCs were isolated and cultured with density gradient centrifugation combined with attachment culture method in vitro. Liposome- mediated gene transfer was used to generate a population of hMSCs overexpressing the gene encoding VEGF165. Then VEGF- modified hMSCs were seeded onto the surface of ADM. The experimental results showed that ADM we prepared has good compatibility with MSCs, the cells in ADM grew and proliferated well in vitro and the tissue - engineered skin with VEGF- modified hMSCs and ADM has been successfully constructed.

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