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Extracellular Dermal Matrix

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https://www.readbyqxmd.com/read/27909667/arthroscopic-capsular-reconstruction-of-the-hip-with-acellular-dermal-extracellular-matrix-surgical-technique
#1
Itay Perets, David E Hartigan, John P Walsh, Edwin Chaharbakhshi, Mary R Close, Benjamin G Domb
Atraumatic instability of the hip has become an increasingly studied occurrence in recent years. There are several established surgical techniques that help restore stability of the native hip joint. In some cases, these procedures are not an option. As the phenomenon has become recognized more frequently, a greater number of revision surgeries are warranted in patients with ligamentous laxity. A durable solution for irreparable microinstability needs to be formulated to address this vulnerable patient demographic...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909082/proteomic-investigation-of-dermal-fibroblasts-isolated-from-affected-and-unaffected-skin-samples-from-patients-with-limited-cutaneous-systemic-sclerosis-2-distinct-entities
#2
Claudio Corallo, Annalisa Santucci, Giulia Bernardini, Natale Figura, Roberto Leoncini, Giulia Riolo, Antonio Montella, Chiara Chirico, Ranuccio Nuti, Nicola Giordano
OBJECTIVE: To identify using proteomic analysis the proteins of altered abundance in the affected and unaffected limited cutaneous systemic sclerosis (lcSSc) skin fibroblasts. METHODS: Excision biopsies (3 mm) were obtained from the affected and unaffected skin of 5 patients with lcSSc. Dermal fibroblasts were isolated enzymatically. Two-dimensional gel electrophoresis was used to separate and define proteins in affected and unaffected fibroblast lysates. Proteins of altered abundance were identified by mass spectrometry...
December 1, 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27892645/endothelial-cell-derived-endothelin-1-is-involved-in-abnormal-scar-formation-by-dermal-fibroblasts-through-rhoa-rho-kinase-pathway
#3
Koichiro Kiya, Tateki Kubo, Kenichiro Kawai, Shinsuke Matsuzaki, Rieko Muramatsu, Daisuke Maeda, Toshihiro Fujiwara, Akimitsu Nishibayashi, Shigeyuki Kanazawa, Kenji Yano, Genki Amano, Taiichi Katayama, Ko Hosokawa
Hypertrophic scars and keloids are characterized by excessive dermal deposition of extracellular matrix due to fibroblast-to-myofibroblast differentiation. Endothelin-1 (ET-1) is primarily produced by vascular endothelial cells, and plays multiple roles in the wound-healing response and organ fibrogenesis. In this study, we investigated the pathophysiological significance of ET-1 and involvement of RhoA, a member of the Rho GTPases, in hypertrophic scar/keloid formation. We found that ET-1 expression on dermal microvascular endothelial cells (ECs) in hypertrophic scars and keloids was higher than that in normal skin and mature scars...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27888134/perilla-frutescens-leaves-extract-ameliorates-ultraviolet-radiation-induced-extracellular-matrix-damage-in-human-dermal-fibroblasts-and-hairless-mice-skin
#4
Jung-Soo Bae, Mira Han, Hee Soon Shin, Min-Kyoung Kim, Chang-Yup Shin, Dong Hun Lee, Jin Ho Chung
ETHNOPHARMACOLOGICAL RELEVANCE: Perilla frutescens (L.) Britt. (Lamiaceae) is a traditional herb that is consumed in East Asian countries as a traditional medicine. This traditional herb has been documented for centuries to treat various diseases such as depression, allergies, inflammation and asthma. However, the effect of Perilla frutescens on skin has not been characterized well. AIM OF THE STUDY: The present study aimed to investigate the effect of Perilla frutescens leaves extract (PLE) on ultraviolet radiation-induced extracellular matrix damage in human dermal fibroblasts and hairless mice skin...
November 22, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27877059/skin-rejuvenation-using-cosmetic-products-containing-growth-factors-cytokines-and-matrikines-a-review-of-the-literature
#5
REVIEW
Caroline Aldag, Diana Nogueira Teixeira, Phillip S Leventhal
Skin aging is primarily due to alterations in the dermal extracellular matrix, especially a decrease in collagen I content, fragmentation of collagen fibrils, and accumulation of amorphous elastin material, also known as elastosis. Growth factors and cytokines are included in several cosmetic products intended for skin rejuvenation because of their ability to promote collagen synthesis. Matrikines and matrikine-like peptides offer the advantage of growth factor-like activities but better skin penetration due to their much smaller molecular size...
2016: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/27867754/a-small-chimeric-fibronectin-fragment-accelerates-dermal-wound-repair-in-diabetic-mice
#6
Denise C Hocking, James R Brennan, Carol H Raeman
Objective: During wound repair, soluble fibronectin is converted into biologically active, insoluble fibrils via a cell-mediated process. This fibrillar, extracellular matrix (ECM) form of fibronectin stimulates cell processes critical to tissue repair. Nonhealing wounds show reduced levels of ECM fibronectin fibrils. The objective of this study was to produce a small, recombinant wound supplement with the biological activity of insoluble fibronectin fibrils. Approach: A chimeric fibronectin fragment was produced by inserting the integrin-binding Arg-Gly-Asp (RGD) loop from the tenth type III repeat of fibronectin (FNIII10) into the analogous site within the heparin-binding, bioactive fragment of the first type III repeat (FNIII1H)...
November 1, 2016: Advances in Wound Care
https://www.readbyqxmd.com/read/27866969/overexpression-of-cd109-in-the-epidermis-differentially-regulates-alk1-versus-alk5-signaling-and-modulates-extracellular-matrix-synthesis-in-the-skin
#7
Joshua Vorstenbosch, Christopher M Nguyen, Shufeng Zhou, You Jung Seo, Aya Siblini, Kenneth W Finnson, Albane A Bizet, Simon D Tran, Anie Philip
Transforming growth factor-beta (TGF-β) is a multifunctional growth factor involved in many physiological processes including wound healing and inflammation. Excessive TGF-β signaling in the skin has been implicated in fibrotic skin disorders such as keloids and scleroderma. We have previously identified CD109 as a TGF- β co-receptor and inhibitor of TGF-ß signaling, and have shown that transgenic mice overexpressing CD109 in the epidermis display decreased scarring. In certain cell types, in addition to the canonical type I receptor, ALK5 which activates Smad2/3, TGF-β can signal through another type I receptor ALK1 which activates Smad1/5...
November 17, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27852013/modulation-of-cell-attachment-proliferation-and-angiogenesis-by-decellularized-dehydrated-human-amniotic-membrane-in-in-vitro-models
#8
Xuan Guo, Aleksandr Kaplunovsky, Raihana Zaka, Chuan Wang, Hemlata Rana, Jeffrey Turner, Qian Ye, Ivana Djuretic, Joseph Gleason, Vladimir Jankovic, Janice M Smiell, Mohit Bhatia, Wolfgang Hofgartner, Robert Hariri
BACKGROUND: Decellularized, dehydrated human amniotic membrane (DDHAM) is an extracellular matrix devoid of cells, cell debris, and growth factors. This study examines the effect of cell attachment to the DDHAM and the induced cellular responses. MATERIALS AND METHODS: The cell types employed in this study were human dermal fibroblasts (HDF), human epithelial keratinocytes (HEK), and human dermal microvascular endothelial cells (HDMEC), all of which play critical roles in the wound healing process...
October 24, 2016: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/27826469/a-novel-reticular-dermal-graft-leverages-architectural-and-biological-properties-to-support-wound-repair
#9
Anouska Dasgupta, Dennis Orgill, Robert D Galiano, Charles M Zelen, Yen-Chen Huang, Evangelia Chnari, William W Li
BACKGROUND: Acellular dermal matrices (ADMs) are frequently used in reconstructive surgery and as scaffolds to treat chronic wounds. The 3-dimensional architecture and extracellular matrix provide structural and signaling cues for repair and remodeling. However, most ADMs are not uniformly porous, which can lead to heterogeneous host engraftment. In this study, we hypothesized that a novel human reticular ADM (HR-ADM; AlloPatch Pliable, Musculoskeletal Transplant Foundation, Edison, N...
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27788826/morphologic-changes-in-the-dermis-after-the-single-administration-of-autologous-fibroblastic-cells-a-preliminary-study
#10
B Machaliński, A Brodkiewicz, K Szumilas, D Rogińska, M P Kawa, I Stecewicz, G Trybek, M Marchlewicz, B Wiszniewska
BACKGROUND: Aging is a multifactorial process defined by an accumulation of damage in all tissues and organs, including the skin, throughout the lifespan of an individual. The reduction of both cellular and extracellular matrix components of the dermis during the aging process is followed by the alteration of the morphology of the skin tissue. This study was conducted to assess skin morphology in men before and 3 months after the intradermal injection of autologous fibroblastic cells...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27773837/new-e-beam-initiated-hyaluronan-acrylate-cryogels-support-growth-and-matrix-deposition-by-dermal-fibroblasts
#11
S Thönes, L M Kutz, S Oehmichen, J Becher, K Heymann, A Saalbach, W Knolle, M Schnabelrauch, S Reichelt, U Anderegg
Cryogels made of components of natural extracellular matrix components are potent biomaterials for bioengineering and regenerative medicine. Human dermal fibroblasts are key cells for tissue replacement during wound healing. Thus, any biomaterial for wound healing applications should enable growth, differentiation and matrix synthesis by these cells. Cryogels are highly porous scaffolds consisting of a network of interconnected pores. Here, we used a novel group of cryogels generated from acrylated hyaluronan where the polymerization was initiated by accelerated electrons (E-beam)...
October 20, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27746359/role-of-non-mulberry-silk-fibroin-in-deposition-and-regulation-of-extracellular-matrix-towards-accelerated-wound-healing
#12
Dimple Chouhan, Bijayshree Chakraborty, Samit K Nandi, Biman B Mandal
: Bombyx mori silk fibroin (BMSF) as biopolymer has been extensively explored in wound healing applications. However, limited study is available on the potential of silk fibroin (SF) from non-mulberry (Antheraea assama and Philosamia ricini) silk variety. Herein, we have developed non-mulberry SF (NMSF) based electrospun mats functionalized with epidermal growth factor (EGF) and ciprofloxacin HCl as potential wound dressing. The NMSF based mats exhibited essential properties of wound dressing like biocompatibility, high water retention capacity (440%), water vapor transmission rate (∼2330gm(-2)day(-1)), high elasticity (∼2...
October 13, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27744356/dysregulated-interleukin-23-signalling-contributes-to-the-increased-collagen-production-in-scleroderma-fibroblasts-via-balancing-microrna-expression
#13
Wakana Nakayama, Masatoshi Jinnin, Yukiko Tomizawa, Kayo Nakamura, Hideo Kudo, Kuniko Inoue, Katsunari Makino, Noritoshi Honda, Ikko Kajihara, Satoshi Fukushima, Hironobu Ihn
OBJECTIVES: The overexpression of IL-12 family cytokines is implicated in the pathogenesis of SSc, but their exact role is still unclear. The aim of this study was to investigate the regulation of extracellular matrix expression by IL-23 and its contribution to the phenotype of SSc. METHODS: The mRNA expression was determined by PCR array and real-time PCR. The expression levels of proteins were determined by immunoblotting and immunohistochemical staining. The effect of IL-23 on dermal fibrosis in vivo was examined in a mouse model of SSc induced by bleomycin injection...
October 15, 2016: Rheumatology
https://www.readbyqxmd.com/read/27744068/development-of-collagen-polydopamine-complexed-matrix-as-mechanically-enhanced-and-highly-biocompatible-semi-natural-tissue-engineering-scaffold
#14
Yang Hu, Weihua Dan, Shanbai Xiong, Yang Kang, Arvind Dhinakar, Jun Wu, Zhipeng Gu
: To improve the mechanical properties and biocompatibility of collagen I matrix, a novel and facile strategy was developed to modify porcine acellular dermal matrix (PADM) via dopamine self-polymerization followed by collagen immobilization to enhance the biological, mechanical and physicochemical properties of PADM. Mechanism study indicated that the polymerization of dopamine onto PADM surface could be regulated by controlling the amount of hydrogen bonds forming between phenol hydroxyl (COH) and nitrogen atom (NCO) within collagen fibers of PADM...
October 12, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27732959/ikk%C3%AE-regulates-the-stratification-and-differentiation-of-the-epidermis-implications-for-skin-cancer-development
#15
Josefa P Alameda, Manuel Navarro, Ángel Ramírez, Angustias Page, Cristian Suárez-Cabrera, Rodolfo Moreno-Maldonado, Jesús M Paramio, M Carmen Fariña, Marcela Del Río, M Jesús Fernández-Aceñero, Ana Bravo, M Llanos Casanova
IKKα plays a mandatory role in keratinocyte differentiation and exerts an important task in non-melanoma skin cancer development. However, it is not fully understood how IKKα exerts these functions. To analyze in detail the role of IKKα in epidermal stratification and differentiation, we have generated tridimensional (3D) cultures of human HaCaT keratinocytes and fibroblasts in fibrin gels, obtaining human skin equivalents that comprise an epidermal and a dermal compartments that resembles both the structure and differentiation of normal human skin...
October 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27729548/systemic-delivery-of-bone-marrow-mesenchymal-stem-cells-for-in-situ-intervertebral-disc-regeneration
#16
Carla Cunha, Catarina R Almeida, Maria Inês Almeida, Andreia M Silva, Maria Molinos, Sofia Lamas, Catarina L Pereira, Graciosa Q Teixeira, António T Monteiro, Susana G Santos, Raquel M Gonçalves, Mário A Barbosa
: : Cell therapies for intervertebral disc (IVD) regeneration presently rely on transplantation of IVD cells or stem cells directly to the lesion site. Still, the harsh IVD environment, with low irrigation and high mechanical stress, challenges cell administration and survival. In this study, we addressed systemic transplantation of allogeneic bone marrow mesenchymal stem cells (MSCs) intravenously into a rat IVD lesion model, exploring tissue regeneration via cell signaling to the lesion site...
October 11, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27723763/hyaluronan-hybrid-cooperative-complexes-as-a-novel-frontier-for-cellular-bioprocesses-re-activation
#17
Antonietta Stellavato, Luisana Corsuto, Antonella D'Agostino, Annalisa La Gatta, Paola Diana, Patrizia Bernini, Mario De Rosa, Chiara Schiraldi
Hyaluronic Acid (HA)-based dermal formulations have rapidly gained a large consensus in aesthetic medicine and dermatology. HA, highly expressed in the Extracellular Matrix (ECM), acts as an activator of biological cascades, stimulating cell migration and proliferation, and operating as a regulator of the skin immune surveillance, through specific interactions with its receptors. HA may be used in topical formulations, as dermal inducer, for wound healing. Moreover, intradermal HA formulations (injectable HA) provide an attractive tool to counteract skin aging (e...
2016: PloS One
https://www.readbyqxmd.com/read/27717133/the-fractionation-of-adipose-tissue-procedure-to-obtain-stromal-vascular-fractions-for-regenerative-purposes
#18
Joris A van Dongen, Hieronymus P Stevens, Mojtaba Parvizi, Berend van der Lei, Martin C Harmsen
Autologous adipose tissue transplantation is clinically used to reduce dermal scarring and to restore volume loss. The therapeutic benefit on tissue damage more likely depends on the stromal vascular fraction of adipose tissue than on the adipocyte fraction. This stromal vascular fraction can be obtained by dissociation of adipose tissue, either enzymatically or mechanical. Enzymatic dissociation procedures are time-consuming and expensive. Therefore, we developed a new inexpensive mechanical dissociation procedure to obtain the stromal vascular fraction from adipose tissue in a time sparing way, which is directly available for therapeutic injection...
September 26, 2016: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/27710850/dynamics-of-nanoparticle-diffusion-and-uptake-in-three-dimensional-cell-cultures
#19
Valentina Belli, Daniela Guarnieri, Marco Biondi, Francesca Della Sala, Paolo A Netti
This study aims at elucidating the effect of three-dimensional (3D) extracellular matrix on cell behaviour and nanoparticle (NP) diffusion and its consequences on NP cellular uptake mechansims. For this purpose, human dermal fibroblasts (HDF) and human fibrosarcoma (HT1080) cell lines were grown within a 3D collagen gel and exposed to model polystyrene (PS) NPs of controlled size (44 and 100nm). Results indicate that, in 3D, cell morphology dramatically changes compared to standard 2D cultures and NP diffusion within the matrix is hampered by the interaction with the collagen fibres...
September 29, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27707905/role-of-intracellular-poroelasticity-on-freezing-induced-deformation-of-cells-in-engineered-tissues
#20
Soham Ghosh, Altug Ozcelikkale, J Craig Dutton, Bumsoo Han
Freezing of biomaterials is important in a wide variety of biomedical applications, including cryopreservation and cryosurgeries. For the success of these applications to various biomaterials, biophysical mechanisms, which determine freezing-induced changes in cells and tissues, need to be well understood. Specifically, the significance of the intracellular mechanics during freezing is not well understood. Thus, we hypothesize that cells interact during freezing with the surroundings such as suspension media and the extracellular matrix (ECM) via two distinct but related mechanisms-water transport and cytoskeletal mechanics...
October 2016: Journal of the Royal Society, Interface
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