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https://www.readbyqxmd.com/read/28101973/heparin-cross-linked-collagen-sponge-scaffolds-improve-functional-regeneration-of-rat-tracheal-epithelium
#1
Ryosuke Nakamura, Akiko Tani, Susumu Yoshie, Masakazu Ikeda, Ikuo Wada, Akihiro Hazama, Yukio Nomoto, Yasuhiro Tada, Tatsuo Nakamura, Koichi Omori
Tracheal epithelial cells maintain airway homeostasis by mediating mucociliary clearance. Following tracheal reconstruction, timely epithelial regeneration is required to prevent respiratory compromise and infectious diseases. To achieve rapid tracheal epithelial regeneration, a heparin cross-linked collagen sponge containing fibroblast growth factor-2 (FGF-2) was prepared as a graft for tracheal reconstruction. The heparin cross-linked sponge exhibited a high FGF-2 retaining capacity, and tracheal epithelial and mesenchymal cells cultured in this sponge containing FGF-2 showed high proliferative capacities...
January 19, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28069556/regeneration-of-bone-using-nanoplex-delivery-of-fgf-2-and-bmp-2-genes-in-diaphyseal-long-bone-radial-defects-in-a-diabetic-rabbit-model
#2
Behnoush Khorsand, Nate Nicholson, Anh-Vu Do, John E Femino, James A Martin, Emily Petersen, Brian Guetschow, Douglas C Fredericks, Aliasger K Salem
Bone fracture healing impairment related to systemic diseases such as diabetes can be addressed by growth factor augmentation. We previously reported that growth factors such as fibroblast growth factor-2 (FGF-2) and bone morphogenetic protein-2 (BMP-2) work synergistically to encourage osteogenesis in vitro. In this report, we investigated if BMP-2 and FGF-2 together can synergistically promote bone repair in a leporine model of diabetes mellitus, a condition that is known to be detrimental to union. We utilized two kinds of plasmid DNA encoding either BMP-2 or FGF-2 formulated into polyethylenimine (PEI) complexes...
February 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27959394/mir-214-suppresses-the-osteogenic-differentiation-of-bone-marrow-derived-mesenchymal-stem-cells-and-these-effects-are-mediated-through-the-inhibition-of-the-jnk-and-p38-pathways
#3
Yongzhi Guo, Lianhua Li, Jie Gao, Xiaobin Chen, Qinghua Sang
In this study, we sought to investigate the expression of microRNA (miR)-214 on the osteogenic differentiation of bone marrow‑derived mesenchymal stem cells (BMSCs) and explore the possible underlying mechanisms. We found that the overexpression of miR‑214 effectively promoted the adipocyte differentiation of BMSCs in vitro, reduced alkaline phosphatase (ALP) activity and the gene expression of collagen type I (Col I), osteocalcin (OCN) and osteopontin (OPN) in the BMSCs. We further found that the overexpression of miR‑214 suppressed the protein expression of fibroblast growth factor (FGF), phosphorylated c‑Jun N-terminal kinase (p-JNK) and phosphorylated p38 (p-p38) in the BMSCs...
January 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27939203/improvement-of-mesh-recolonization-in-abdominal-wall-reconstruction-with-adipose-vs-bone-marrow-mesenchymal-stem-cells-in-a-rodent-model
#4
M van Steenberghe, T Schubert, Y Guiot, R M Goebbels, P Gianello
BACKGROUND: Reconstruction of muscle defects remains a challenge. Our work assessed the potential of an engineered construct made of a human acellular collagen matrix (HACM) seeded with porcine mesenchymal stem cells (MSCs) to reconstruct abdominal wall muscle defects in a rodent model. METHODS: This study compared 2 sources of MSCs (bone-marrow, BMSCs, and adipose, ASCs) in vitro and in vivo for parietal defect reconstruction. Cellular viability and growth factor release (VEGF, FGF-Beta, HGF, IGF-1, TGF-Beta) were investigated under normoxic/hypoxic culture conditions...
December 2, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27870483/transcriptome-analysis-of-the-regenerating-tail-versus-the-scarring-limb-in-lizard-reveals-pathways-leading-to-successful-versus-unsuccessful-organ-regeneration-in-amniotes
#5
Nicola Vitulo, Luisa Dalla Valle, Tatjana Skobo, Giorgio Valle, Lorenzo Alibardi
BACKGROUND: lizards are amniotes regenerating the tail but not the limb and no information on their different gene expression is available. RESULTS: transcriptomes of regenerating tail and limb blastemas show differences in gene expression between the two organs. In tail blastema snoRNAs and Wnt signals appear up-regulated probably in association with the Apical Epidermal Peg (AEP), an epithelial region that sustains tail regeneration but is absent in the limb. A balance between pro-oncogenes and tumor suppressors is likely present in tail blastema allowing a regulated proliferation...
November 21, 2016: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/27870141/periodontal-tissue-engineering-by-nano-beta-tricalcium-phosphate-scaffold-and-fibroblast-growth-factor-2-in-one-wall-infrabony-defects-of-dogs
#6
K Ogawa, H Miyaji, A Kato, Y Kosen, T Momose, T Yoshida, E Nishida, S Miyata, S Murakami, H Takita, B Fugetsu, T Sugaya, M Kawanami
BACKGROUND AND OBJECTIVE: Nanoparticle bioceramics are being investigated for biomedical applications. We fabricated a regenerative scaffold comprising type I collagen and beta-tricalcium phosphate (β-TCP) nanoparticles. Fibroblast growth factor-2 (FGF-2) is a bioeffective signaling molecule that stimulates cell proliferation and wound healing. This study examined the effects, on bioactivity, of a nano-β-TCP/collagen scaffold loaded with FGF-2, particularly on periodontal tissue wound healing...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27867665/dose-dependent-differential-effect-of-neurotrophic-factors-on-in-vitro-and-in-vivo-regeneration-of-motor-and-sensory-neurons
#7
Daniel Santos, Francisco Gonzalez-Perez, Xavier Navarro, Jaume Del Valle
Although peripheral axons can regenerate after nerve transection and repair, functional recovery is usually poor due to inaccurate reinnervation. Neurotrophic factors promote directional guidance to regenerating axons and their selective application may help to improve functional recovery. Hence, we have characterized in organotypic cultures of spinal cord and dorsal root ganglia the effect of GDNF, FGF-2, NGF, NT-3, and BDNF at different concentrations on motor and sensory neurite outgrowth. In vitro results show that GDNF and FGF-2 enhanced both motor and sensory neurite outgrowth, NGF and NT-3 were the most selective to enhance sensory neurite outgrowth, and high doses of BDNF selectively enhanced motor neurite outgrowth...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27862226/histone-h4-methyltransferase-suv420h2-maintains-fidelity-of-osteoblast-differentiation
#8
Farzaneh Khani, Roman Thaler, Christopher R Paradise, David R Deyle, Marianne Kruijthof-de Julio, Mario Galindo, Jonathan A Gordon, Gary S Stein, Amel Dudakovic, Andre J van Wijnen
Osteogenic lineage commitment and progression is controlled by multiple signaling pathways (e.g., WNT, BMP, FGF) that converge on bone-related transcription factors. Access of osteogenic transcription factors to chromatin is controlled by epigenetic regulators that generate post-translational modifications of histones ("histone code"), as well as read, edit and/or erase these modifications. Our understanding of the biological role of epigenetic regulators in osteoblast differentiation remains limited. Therefore, we performed next-generation RNA sequencing (RNA-seq) and established which chromatin-related proteins are robustly expressed in mouse bone tissues (e...
November 9, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27790732/root-coverage-using-porcine-collagen-matrix-with-fibroblast-growth-factor-2-a-pilot-study-in-dogs
#9
Jae Kook Cha, Yoo-Kyung Sun, Jung-Seok Lee, Seong-Ho Choi, Ui-Won Jung
AIM: The aim of this study was to evaluate the effect of fibroblast growth factor-2 (FGF-2) in combination with porcine collagen matrix (CM) for coverage of gingival recession defects in dogs. MATERIALS AND METHODS: In five male mongrel dogs, labial gingival recession defects were surgically created in the lower-third incisors bilaterally. The defects were randomly assigned to the CM/FGF-2 group (experimental) or the CM-only group (control). Standardized clinical photographs and silicone impressions were taken at 4 and 16 weeks of healing to calculate the remaining recession area...
January 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27770834/preclinical-study-of-mouse-pluripotent-parthenogenetic-embryonic-stem-cell-derivatives-for-the-construction-of-tissue-engineered-skin-equivalent
#10
Yang Rao, Jihong Cui, Lu Yin, Wei Liu, Wenguang Liu, Mei Sun, Xingrong Yan, Ling Wang, Fulin Chen
BACKGROUND: Embryonic stem cell (ESC) derivatives hold great promise for the construction of tissue-engineered skin equivalents (TESE). However, harvesting of ESCs destroys viable embryos and may lead to political and ethical concerns over their application. In the current study, we directed mouse parthenogenetic embryonic stem cells (pESCs) to differentiate into fibroblasts, constructed TESE, and evaluated its function in vivo. METHODS: The stemness marker expression and the pluripotent differentiation ability of pESCs were tested...
October 22, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27750286/secretion-profile-of-induced-pluripotent-stem-cell-derived-retinal-pigment-epithelium-during-wound-healing
#11
Whitney A Greene, Teresa A Burke, Elaine D Por, Ramesh R Kaini, Heuy-Ching Wang
Purpose: The purpose of this study was to characterize the secretion profile of induced pluripotent stem cell-derived retinal pigment epithelium (iPS-RPE) during wound healing. iPS-RPE was used to develop an in vitro wound healing model. We hypothesized that iPS-RPE secretes cytokines and growth factors which act in an autocrine manner to promote migration and proliferation of cells during wound healing. Methods: iPS-RPE was grown in transwells until fully confluent and pigmented...
August 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27748036/effects-of-diode-laser-irradiation-and-fibroblast-growth-factor-on-periodontal-healing-of-replanted-teeth-after-extended-extra-oral-dry-time
#12
Erica Dos Santos Carvalho, Rogério Hadid Rosa, Flávia de Moura Pereira, Ana Lia Anbinder, Isabel Mello, Sandra Marcia Habitante, Denise Pontes Raldi
The search for effective protocols to reduce the incidence of root resorptions and allow periodontal ligament repair is still challenging, given the unpredictable outcome of late tooth replantation. The aim of this study was to assess the effects of both high-power diode laser irradiation (DL) and basic fibroblast growth factor (FGF) on the periodontal healing of replanted teeth after extended extra-oral dry time METHODS: Maxillary incisors of 50 male rats were extracted and assigned to three experimental and two control groups (n = 10)...
October 17, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27743199/arginine-silicate-inositol-complex-accelerates-cutaneous-wound-healing
#13
Ali Said Durmus, Mehmet Tuzcu, Oguzhan Ozdemir, Cemal Orhan, Nurhan Sahin, Ibrahim Hanifi Ozercan, James Richard Komorowski, Shakir Ali, Kazim Sahin
Arginine silicate inositol (ASI) complex is a composition of arginine, silicon, and inositol that has been shown to have beneficial effects on vascular health. This study reports the effects of an ASI ointment on wound healing in rats. A full-thickness excision wound was created by using a disposable 5 mm diameter skin punch biopsy tool. In this placebo-controlled study, the treatment group's wound areas were covered by 4 or 10 % ASI ointments twice a day for 5, 10, or 15 days. The rats were sacrificed either 5, 10, or 15 days after the wounds were created, and biopsy samples were taken for biochemical and histopathological analysis...
October 14, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27685949/corneal-keratocyte-transition-to-mesenchymal-stem-cell-phenotype-and-reversal-using-serum-free-medium-supplemented-with-fgf-2-tgf-%C3%A3-3-and-retinoic-acid
#14
Laura E Sidney, Andrew Hopkinson
Keratocytes of the corneal limbal stroma can derive populations of mesenchymal stem cells (MSC) when expanded in vitro. However, once a corneal MSC (cMSC) phenotype is achieved, regaining the keratocyte phenotype can be challenging, and there is no standardised differentiation medium. Here, we investigated the transition of keratocytes to cMSC and compared different supplements in their ability to return cMSC to a keratocyte phenotype. Immunofluorescence and RT-qPCR demonstrated in vivo keratocyte expression of ALDH3A1, CD34 and keratocan, but not any of the typical MSC markers (CD73, CD90, CD105)...
September 29, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27671715/the-efficacy-of-fibroblast-growth-factor-for-the-treatment-of-chronic-vocal-fold-scarring-from-animal-model-to-clinical-application
#15
Myung Jin Ban, Jae Hong Park, Jae Wook Kim, Ki Nam Park, Jae Yong Lee, Hee Kyung Kim, Seung Won Lee
Objectives: This study assessed the regenerative efficacy of basic fibroblast growth factor (FGF) in a rabbit model of chronic vocal fold scarring and then confirmed its utility and safety in a prospective trial of patients with this condition. Methods: FGF was injected three times, at 1-week intervals, into a chronic vocal fold scar created in a rabbit model. After 1 month, mRNA level of procollagen I, hyaluronic acid synthetase 2 (HAS 2), and matrix metalloproteinase 2 (MMP 2) were analyzed by real-time polymerase chain reaction...
September 27, 2016: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/27667148/the-jak-stat3-signalling-pathway-regulated-angiogenesis-in-an-endothelial-cell-adipose-derived-stromal-cell-co-culture-3d-gel-model
#16
Changyue Xue, Jiamin Xie, Dan Zhao, Shiyu Lin, Tengfei Zhou, Sirong Shi, Xiaoru Shao, Yunfeng Lin, Bofeng Zhu, Xiaoxiao Cai
OBJECTIVES: The aim of the study was to investigate the role of the JAK/STAT3 signalling pathway in angiogenesis. MATERIALS AND METHODS: The model established in vitro, involved a 3D collagen gel being implanted with endothelial cells (ECs) from red fluorescent protein-labelled mice, and adipose-derived stromal cells (ASCs) from green fluorescent protein-labelled mice. Phenomena of angiogenesis, after treatment by the inhibitor and the activator of JAK/STAT3 pathway respectively, were observed using confocal laser scanning microscopy...
February 2017: Cell Proliferation
https://www.readbyqxmd.com/read/27622867/circulating-biomarkers-of-fibrosis-and-cardioversion-of-atrial-fibrillation-a-prospective-controlled-cohort-study
#17
Gordon A Begg, Gregory Y H Lip, Sven Plein, Muzahir H Tayebjee
INTRODUCTION: External direct current cardioversion (DCCV) is an established treatment for AF but is associated with procedural risk and high AF recurrence rates. Cardiac fibrosis has been associated with AF, and circulating biomarkers have been suggested as a method of its assessment, but which biomarkers are suitable is yet to be determined. This study examines the differences between levels of procollagen type III N terminal peptide (PIIINP), type I collagen carboxyl telopeptide (ICTP), galectin-3 (gal-3) and fibroblast growth factor 23 (FGF-23) in DCCV patients, and disease-and-age-matched controls...
January 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/27591355/cells-must-express-components-of-the-planar-cell-polarity-system-and-extracellular-matrix-to-support-cytonemes
#18
Hai Huang, Thomas B Kornberg
Drosophila dorsal air sac development depends on Decapentaplegic (Dpp) and Fibroblast growth factor (FGF) proteins produced by the wing imaginal disc and transported by cytonemes to the air sac primordium (ASP). Dpp and FGF signaling in the ASP was dependent on components of the planar cell polarity (PCP) system in the disc, and neither Dpp- nor FGF-receiving cytonemes extended over mutant disc cells that lacked them. ASP cytonemes normally navigate through extracellular matrix (ECM) composed of collagen, laminin, Dally and Dally-like (Dlp) proteins that are stratified in layers over the disc cells...
2016: ELife
https://www.readbyqxmd.com/read/27543985/differential-regulatory-role-of-soluble-klothos-on-cardiac-fibrogenesis-in-hypertension
#19
Xue Liu, Yuanjian Chen, Cody W McCoy, Tieqiang Zhao, Darryl L Quarles, Min Pi, Syamal K Bhattacharya, Gwendalyn King, Yao Sun
BACKGROUND: Soluble Klotho functions as an endocrine factor that plays important roles in a variety of pathophysiological processes. Soluble Klotho contains 130 KDa and 65 KDa isoforms. However, their distinct individual functional heterogeneity remains uncertain. Herein, we investigated the regulatory role of two soluble Klothos on cardiac fibrogenic responses. METHODS AND RESULTS: The effect of soluble Klothos on myofibroblast differentiation, proliferation, and collagen synthesis/degradation were examined in cultured mouse cardiac myofibroblasts...
October 2016: American Journal of Hypertension
https://www.readbyqxmd.com/read/27474009/fibroblast-activation-in-cancer-when-seed-fertilizes-soil
#20
REVIEW
Sanya-Eduarda Kuzet, Cedric Gaggioli
In solid cancers, activated fibroblasts acquire the capacity to provide fertile soil for tumor progression. Specifically, cancer-associated fibroblasts (CAFs) establish a strong relationship with cancer cells. This provides advantages to both cell types: whereas cancer cells initiate and sustain CAF activation, CAFs support cancer cell growth, motility and invasion. This results in tumor progression, metastasis and chemoresistance. Numerous studies have detailed the mechanisms involved in fibroblast activation and cancer progression, some of which are reviewed in this article...
September 2016: Cell and Tissue Research
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