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https://www.readbyqxmd.com/read/28976339/effects-of-keratinocytes-differentiated-from-embryonic-and-adipogenic-stem-cells-on-wound-healing-in-a-diabetic-mouse-model
#1
Şükrü Kasap, Ali Barutçu, Hasan Güç, Şamil Yazgan, Müjde Kıvanç, H Seda Vatansever
OBJECTIVE: The current study aims to assess the molecular effects of keratinocytes derived from embryonic and adipose-derived stem cells (ADSCs) on wound healing in mice with diabetes mellitus. MATERIALS AND METHODS: Sixty BALB/c mice were randomly allocated into 6 groups of 10. Following diabetes mellitus induction by intraperitoneal injection of streptozocin, wounds were created and covered with gauze dipped in various solutions: isotonic saline, carrier and transfer medium-engineered dermal template, keratinocytes derived from embryonic stem cells (ESCs), keratinocytes differentiated from ADSCs, or ADSC medium alone...
September 11, 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28946792/calvarial-bone-regeneration-is-enhanced-by-sequential-delivery-of-fgf-2-and-bmp-2-from-layer-by-layer-coatings-with-a-biomimetic-calcium-phosphate-barrier-layer
#2
Gloria Gronowicz, Emily Jacobs, Tao Peng, Li Zhu, Marja Hurley, Liisa T Kuhn
A drug delivery coating for synthetic bone grafts has been developed to provide sequential delivery of multiple osteoinductive factors to better mimic aspects of the natural regenerative process. The coating is composed of a biomimetic calcium phosphate (bCaP) layer that is applied to a synthetic bone graft and then covered with a poly-L-Lysine/poly-L-Glutamic acid polyelectrolyte multilayer (PEM) film. Bone morphogenetic protein-2 (BMP-2) was applied prior to the coating process directly on the synthetic bone graft and then bCaP-PEM was deposited followed by adsorption of fibroblast growth factor-2 (FGF-2) into the PEM layer...
September 25, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28940204/adipose-derived-mesenchymal-stromal-cells-prevented-rat-vocal-fold-scarring
#3
Tsuyoshi Morisaki, Yo Kishimoto, Ichiro Tateya, Yoshitaka Kawai, Ryo Suzuki, Takuya Tsuji, Nao Hiwatashi, Tatsuo Nakamura, Koichi Omori, Hiroya Kitano, Hiromi Takeuchi, Shigeru Hirano
OBJECTIVES/HYPOTHESIS: This study aimed to reveal the effects of adipose-derived mesenchymal stromal cells (ASCs) on prevention of vocal fold scarring by investigating how the immediate ASCs transplantation into the injured rat vocal fold affect the levels of gene transcription and translation. STUDY DESIGN: Prospective animal experiments with controls. METHODS: ASCs harvested from green fluorescent protein transgenic rat (ASCs group) or saline (sham group) were injected into the thyroarytenoid muscle of Sprague-Dawley rats immediately after stripping the vocal fold...
September 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28939209/calcium-and-bone-metabolism-indices
#4
Lu Song
Calcium and inorganic phosphate are of critical importance for many body functions, thus the regulations of their plasma concentrations are tightly controlled by the concerted actions of reabsorption/excretion in the kidney, absorption in the intestines, and exchange from bone, the major reservoir for calcium and phosphate in the body. Parathyroid hormone (PTH) and 1,25-dihydroxyvitamin D (1,25(OH)2D) control calcium homeostasis, whereas PTH, 1,25(OH)2D, and bone-derived fibroblast growth factor 23 (FGF 23) control phosphate homeostasis...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28922541/effects-of-collagen-peptides-intake-on-skin-ageing-and-platelet-release-in-chronologically-aged-mice-revealed-by-cytokine-array-analysis
#5
Hongdong Song, Ling Zhang, Yongkang Luo, Siqi Zhang, Bo Li
Action mechanisms underlying various biological activities of collagen peptides (CPs) remained to be elucidated. Cytokines may play an important role in mediating these health benefits of CPs. This study aimed to systemically examine the cytokines in skin and blood regulated by CPs intake. Thirteen-month-old female Kunming mice were administered with CPs for 2 months (0 or 400 mg/kg bodyweight/day). The cytokines in skin and plasma were analysed using a 53-cytokine array and corresponding ELISA kits. In skin, CPs intake significantly down-regulated placenta growth factor (PIGF-2), insulin-like growth factor (IGF)-binding protein (IGFBP) -2 and IGFBP-3, and up-regulated platelet factor 4 (PF4), serpin E1 and transforming growth factor (TGF)-β1 ...
September 18, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28895052/the-effects-of-periostin-in-a-rat-model-of-isoproterenol-mediated-cardiotoxicity
#6
Mahmut Sözmen, Alparslan K Devrim, Yonca B Kabak, Tuba Devrim, Mert Sudagidan
Periostin is an extracellular matrix protein from fasciclin family, and it plays an important role in the cell adhesion, migration, and growth of the organism. Periostin prevents apoptosis while stimulating cardiomyocytes. The present study was designed to investigate cardioprotective effects of the recombinant murine periostin peptide administration in a rat model of isoproterenol (ISO)-induced myocardial injury. The experiment was performed on 84 adult male Sprague Dawley rats in 4 groups (n = 21): control group (1), periostin-treated group (2), ISO-treated group (3), and ISO + periostin-treated group (4)...
September 11, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28874762/cytocompatible-anti-microbial-dressings-of-syzygium-cumini-cellulose-nanocrystals-decorated-with-silver-nanoparticles-accelerate-acute-and-diabetic-wound-healing
#7
Rubbel Singla, Sourabh Soni, Vikram Patial, Pankaj Markand Kulurkar, Avnesh Kumari, Mahesh S, Yogendra S Padwad, Sudesh Kumar Yadav
The ever increasing incidences of non-healing skin wounds have paved way for many efforts on the convoluted process of wound healing. Unfortunately, the lack of relevance and success of modern wound dressings in healing of acute and diabetic wounds still remains a matter of huge concern. Here, an in situ three step approach was embraced for the development of nanocomposite (NCs) dressings by impregnating silver nanoparticles (AgNPs) onto a matrix of cellulose nanocrystals (CNCs) isolated from Syzygium cumini leaves using an environmental friendly approach...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791357/synergistic-effects-of-fibroblast-growth-factor-2-and-bone-morphogenetic-protein-2-on-bone-induction
#8
Rongying Song, Dingding Wang, Rong Zeng, Ju Wang
The present study investigated the synergistic effect of co‑administering fibroblast growth factor‑2 (FGF‑2) and bone morphogenetic protein‑2 (BMP‑2) on osteoblastic differentiation in C2C12 cells and in rats. C2C12 murine myoblast cells represent a well‑accepted in vitro model system to study the ability of BMP‑2 to alter cell lineage from the myogenic to the osteogenic phenotype. The osteoblastic differentiation potency was determined by alkaline phosphatase (ALP) and Alizarin red S staining...
October 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28765932/fgf18-inhibits-mc3t3%C3%A2-e1-cell-osteogenic-differentiation-via-the-erk-signaling-pathway
#9
Feng Zhai, Na Song, Jisheng Ma, Weiyue Gong, Haishan Tian, Xiaokun Li, Chao Jiang, Haijun Wang
Fibroblast growth factor (FGF) 18 is a member of the FGF family and serves a key role in skeletal growth and development. The present study investigated the effect of FGF18 on pre‑osteoblast MC3T3-E1 cells and the signaling pathways involved by performing an alkaline phosphatase (ALP) assay and reverse transcription‑quantitative polymerase chain reaction. MC3T3‑E1 cells incubated in a culture medium supplemented with FGF18 exhibited increased viability when compared with the untreated control cells. In addition, ALP activity was decreased in MC3T3‑E1 cells treated with FGF18 plus an osteogenic medium (OM) for 7 and 14 days when compared with untreated and OM‑treated controls...
October 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28729349/fgf9-prevents-pleural-fibrosis-induced-by-intra-pleural-adenovirus-injection-in-mice
#10
Aurélien Justet, Audrey Joannes, Valérie Besnard, Joëlle Marchal-Sommé, Madeleine Jaillet, Phillippe Bonniaud, Jean-Michel Sallenave, Brigitte Solhonne, Yves Castier, Pierre Mordant, Hervé Mal, Aurélie Cazes, Raphael Borie, Arnaud A Mailleux, Bruno Crestani
Fibroblast Growth Factor 9 (FGF9) is necessary for fetal lung development and is expressed by epithelium and mesothelium. We evaluated the role of FGF9 overexpression on adenoviral-induced pleural injury in vivo and determined the biological effects of FGF9 on mesothelial cells in vitro. We assessed the expression of FGF9 and FGF receptors by mesothelial cells in both Human and mouse lungs. Intrapleural injection of an adenovirus expressing human FGF9 (AdFGF9) or a control adenovirus (Adcont) was performed...
July 20, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28714570/human-osteoarthritic-chondrons-outnumber-patient-and-joint-matched-chondrocytes-in-hydrogel-culture-future-application-in-autologous-cell-based-oa-cartilage-repair
#11
Miriam Rothdiener, Tatiana Uynuk-Ool, Norbert Südkamp, Matthias Aurich, Alan J Grodzinsky, Bodo Kurz, Bernd Rolauffs
Autologous chondrocyte implantation (ACI) is used in 34-60% for osteoarthritic (OA) cartilage defects, although ACI is neither recommended nor designed for OA. Envisioning a hydrogel-based ACI for OA that uses chondrons instead of classically used chondrocytes, we hypothesized that human OA-chondrons may outperform OA-chondrocytes. We compared patient- and joint surface-matched human OA-chondrons vs. OA-chondrocytes cultured for the first time in a hydrogel, using a self-assembling peptide system. We determined yield, viability, cell numbers, mRNA expression, GAPDH mRNA enzyme activity, collagen II synthesis (CPII) and degradation (C2C), and sGAG...
July 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28701073/the-role-of-rhfgf-2-soaked-polymer-membrane-for-enhancement-of-guided-bone-regeneration
#12
Sang-Hoon Lee, Young-Bum Park, Hong-Seok Moon, June-Sung Shim, Han-Sung Jung, Hyung Jun Kim, Moon-Kyu Chung
The purposes of this study are to confirm the role of Fibroblast Growth Factor-2 (FGF-2) in bone regeneration by adding various concentrations of FGF-2 to the collagen membrane and applying it to the Biphasic Calcium Phosphate (BCP) bone graft site for guided bone regeneration, to explore the potential of collagen membrane as FGF-2 carrier, and to determine the optimum FGF concentration for enhancement of bone regeneration. Four bone defects of 8mm in diameter were created in 18 New Zealand rabbit calvaria...
July 12, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28696234/role-of-daptomycin-on-burn-wound-healing-in-an-animal-methicillin-resistant-staphylococcus-aureus-infection-model
#13
Oriana Simonetti, Guendalina Lucarini, Fiorenza Orlando, Elisa Pierpaoli, Roberto Ghiselli, Mauro Provinciali, Pamela Castelli, Mario Guerrieri, Roberto Di Primio, Annamaria Offidani, Andrea Giacometti, Oscar Cirioni
Prolonged hospitalization and antibiotic therapy are risk factors for the development of methicillin-resistant Staphylococcus aureus (MRSA) infections in thermal burn patients. We used a rat model to study the in vivo efficacy of daptomycin in the treatment of burn wound infections by S. aureus, and we evaluated the wound healing process through morphological and immunohistochemical analysis. A copper bar heated in boiling water was applied on a paraspinal site of each rat, resulting in two full-thickness burns...
September 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28695797/effects-of-630-nm-red-and-460-nm-blue-light-emitting-diode-irradiation-on-healing-of-the-skin-wound-in-japanese-big-ear-white-rabbit
#14
Yanhong Li, Jigang Zhang, Yanfeng Xu, Yunlin Han, Binbin Jiang, Lan Huang, Hua Zhu, Yuhuan Xu, Weiling Yang, Chuan Qin
Objective To observe the effects of 630 nm red light and 460 nm blue light emitting diode irradiation on the healing of skin wounds in Japanese big-ear white rabbits. Methods The skin wound model was established with 8 Japanese big-ear white rabbits. Three parts of vulnus in each rabbit were used:two parts of vulnus were irradiated vertically by red and blue LED light,respectively(15 min/time),and the distance between lights and wounds was 15 cm;the 3(rd) part of the wound was used as a control. On the 21(st) day of the wounds exposure to light,the number of healing wounds and the percentage of healing area were recorded and the treatment effect of these two light sources was compared...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28682114/effectiveness-of-topical-application-of-ostrich-oil-on-the-healing-of-staphylococcus-aureus-and-pseudomonas-aeruginosa-infected-wounds
#15
Mohammad Reza Farahpour, Mahsa Vahid, Ahmad Oryan
BACKGROUND/AIMS: Management of infected wounds is one of the major challenges that surgeons and nurses face. Several antimicrobial agents have been used, but the toxicity, drug resistance, and their effect on the healing process remain a matter of concern. The present study was designed to analyze the accelerative impact of topical application of ostrich oil on infected wounds in a mouse model. MATERIALS AND METHODS: 72 BALB/c mice were divided into four main groups of control-sham, mupirocin, and two treatment groups receiving 2% and 4% (w/w) concentrations of ostrich oil, topically...
July 6, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28669805/in-vivo-diabetic-wound-healing-potential-of-nanobiocomposites-containing-bamboo-cellulose-nanocrystals-impregnated-with-silver-nanoparticles
#16
Rubbel Singla, Sourabh Soni, Vikram Patial, Pankaj Markand Kulurkar, Avnesh Kumari, Mahesh S, Yogendra S Padwad, Sudesh Kumar Yadav
In diabetes, hyperglycemic state immensely hinders the wound healing. Here, nanobiocomposites (NCs) developed by impregnation of in situ prepared silver nanoparticles in the matrix of bamboo cellulose nanocrystals were investigated for their ability to hasten the progress of healing events in streptozotocin induced diabetic mice model. Wounds treated with topically applied NCs (hydrogels) showed full recovery (98-100%) within 18days post wounding in contrast to the various control groups where incomplete healing (88-92%) was noticed...
June 29, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28556971/low-level-laser-therapy-780%C3%A2-nm-combined-with-collagen-sponge-scaffold-promotes-repair-of-rat-cranial-critical-size-defects-and-increases-tgf-%C3%AE-fgf-2-opg-rank-and-osteocalcin-expression
#17
Lana Sarita de Souza de Oliveira, Aurigena Antunes de Araújo, Raimundo Fernandes de Araújo Júnior, Carlos Augusto Galvão Barboza, Boniek Castillo Dutra Borges, José Sandro Pereira da Silva
The aim of this study was to evaluate the effect of collagen sponge scaffold (CSS) implantation associated with low-level laser therapy (LLLT) on repairing bone defects. A single 5-mm cranial defect was surgically created in forty Wistar rats, which then received one of the following four interventions (n = 10 per group): no treatment (G0); bone defect implanted with collagen sponge scaffold (CSS) alone (G1); defect treated with low-level laser therapy (LLLT) (wavelength 780 nm; total energy density 120 J/cm(2) ; power 50 mW) alone (G2); and CSS associated with LLLT treatment (G3)...
April 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28536636/a-simple-and-effective-protocol-for-fast-isolation-of-human-tenon-s-fibroblasts-from-a-single-trabeculectomy-biopsy-a-comparison-of-cell-behaviour-in-different-culture-media
#18
Agata Przekora, Tomasz Zarnowski, Grazyna Ginalska
BACKGROUND: Human Tenon's fibroblasts (HTFs) play a crucial role in wound healing. They cause postoperative scarring of the filtering bleb and are thus responsible for trabeculectomy failure. This study aimed to find an effective and fast protocol for HTF isolation from trabeculectomy biopsies. The protocol was compared with the commonly recommended HTF isolation procedure, which uses Dulbecco's modified Eagle's medium (DMEM). We used Eagle's minimum essential medium (EMEM) enriched with fibroblast growth factor (FGF), which selectively promoted the proliferation of HTF cells...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28487375/pulmonary-fibrosis-requires-cell-autonomous-mesenchymal-fibroblast-growth-factor-fgf-signaling
#19
Robert D Guzy, Ling Li, Craig Smith, Samuel J Dorry, Hyun Young Koo, Lin Chen, David M Ornitz
Idiopathic pulmonary fibrosis (IPF) is characterized by progressive pulmonary scarring, decline in lung function, and often results in death within 3-5 five years after diagnosis. Fibroblast growth factor (FGF) signaling has been implicated in the pathogenesis of IPF; however, the mechanism through which FGF signaling contributes to pulmonary fibrosis remains unclear. We hypothesized that FGF receptor (FGFR) signaling in fibroblasts is required for the fibrotic response to bleomycin. To test this, mice with mesenchyme-specific tamoxifen-inducible inactivation of FGF receptors 1, 2, and 3 (Col1α2-CreER; TCKO mice) were lineage labeled and administered intratracheal bleomycin...
June 23, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28471382/decrease-of-mir-195-promotes-chondrocytes-proliferation-and-maintenance-of-chondrogenic-phenotype-via-targeting-fgf-18-pathway
#20
Yong Wang, Tao Yang, Yadong Liu, Wei Zhao, Zhen Zhang, Ming Lu, Weiguo Zhang
Slow growth and rapid loss of chondrogenic phenotypes are the major problems affecting chronic cartilage lesions. The role of microRNA-195 (miR-195) and its detailed working mechanism in the fore-mentioned process remains unknown. Fibroblastic growth factor 18 (FGF-18) plays a key role in cartilage homeostasis; whether miR-195 could regulate FGF-18 and its downstream signal pathway in chondrocyte proliferation and maintenance of chondrogenic phenotypes still remains unclear. The present research shows elevated miR-195 but depressed FGF-18 expressed in joint fluid specimens of 20 patients with chronic cartilage lesions and in CH1M and CH3M chondrocytes when compared with that in joint fluid specimens without cartilage lesions and in CH1W and CH2W chondrocytes, respectively...
May 4, 2017: International Journal of Molecular Sciences
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