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https://www.readbyqxmd.com/read/28487375/pulmonary-fibrosis-requires-cell-autonomous-mesenchymal-fibroblast-growth-factor-fgf-signaling
#1
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 three to 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...
May 9, 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
#2
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
https://www.readbyqxmd.com/read/28470859/zirconium-oxide-and-niobium-oxide-used-as-radiopacifiers-of-a-calcium-silicate-based-material-stimulate-fibroblast-proliferation-and-collagen-formation
#3
G F Silva, J M Guerreiro-Tanomaru, T S da Fonseca, M I B Bernardi, E Sasso-Cerri, M Tanomaru-Filho, P S Cerri
AIM: To evaluate the influence of the addition of microparticulate (micro) and nanoparticulate (nano) zirconium oxide (ZrO2 ) and niobium pentoxide (Nb2 O5 ) to a calcium silicate-based cement (CS) on the subcutaneous healing process in rats compared with MTA-Angelus(™) . METHODOLOGY: In each rat, two polyethylene tubes filled with the following materials: 1) MTA; 2) CS+ZrO2 micro; 3) CS+ZrO2 nano; 4) CS+Nb2 O5 micro or 5) CS+Nb2 O5 nano were implanted subcutaneously; empty polyethylene tubes were used in the Control group...
May 4, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28457186/heparin-augmentation-enhances-bioactive-properties-of-acellular-extracellular-matrix-scaffold
#4
Daniel Park, Holly Mewhort, Guoqi Teng, Darrell Belke, Jeannine Turnbull, Daniyil Svystonyuk, David Guzzardi, Sean Kang, Paul W M Fedak
Extracellular matrix (ECM) maintains a reservoir of bioactive growth factors and matricellular proteins that provide bioinductive effects on local cells that influence phenotype and behaviors. Bioactive acellular ECM scaffolds can be used therapeutically to stimulate adaptive tissue repair. Fibroblast growth factor-2 (FGF-2) attenuates transforming growth factor-β1 (TGF-β1) mediated cardiac fibrosis. Heparin glycosaminoglycan can influence FGF-2 bioactivity and could be leveraged to enhance tissue engineering strategies...
April 29, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28452589/lysyl-oxidase-propeptide-promotes-adipogenesis-through-inhibition-of-fgf-2-signaling
#5
John D Griner, Carl J Rogers, Mei-Jun Zhu, Min Du
Lysyl oxidase (LOX) catalyzes the oxidative deamination of lysine residues in collagen and elastin, key components of connective tissue. LOX is synthesized as an inactive 50 kD pre-proenzyme, and secreted to the extracellular matrix where it is cleaved into an active 32 kD LOX, and an 18kD free propeptide (LOX-PP), purportedly an inhibitor of fibroblast growth factor-2 (FGF-2) signaling. Given that adipocytes are distributed inside the connective tissue, it is likely that LOX-PP has an important regulatory role in adipogenesis, which has not been studied...
January 2, 2017: Adipocyte
https://www.readbyqxmd.com/read/28377320/do-il-3-gm-csf-effect-on-the-myofibroblastic-differentiation-of-human-adipose-derived-stromal-cells
#6
Jae-Sun Lee, Son-Seung Tae, Deok-Yeol Kim, Seung-Kyu Han, Woo-Kyung Kim, Eun-Sang Dhong
BACKGROUND: Capsular contracture is an incurable complication after silicone-based implant surgery. Myofibroblast is the predominant cell in the contracted capsule. We hypothesized that human adipose derive stromal cells (hASCs) together with fibroblast may show a similar phenotypic characteristics of myofibroblast after the treatment of inflammatory cytokines in vitro. MATERIALS AND METHODS: Interleukin 3 (IL-3) and granulocyte macrophage colony stimulating factor (GM-CSF) were treated in the culture of hASCs and HDFs...
April 2, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28339804/intra-cardiac-and-peripheral-levels-of-biochemical-markers-of-fibrosis-in-patients-undergoing-catheter-ablation-for-atrial-fibrillation
#7
Gordon A Begg, Rashed Karim, Tobias Oesterlein, Lee N Graham, Andrew J Hogarth, Stephen P Page, Christopher B Pepper, Kawal Rhode, Gregory Y H Lip, Arun V Holden, Sven Plein, Muzahir H Tayebjee
Aims: Measurement of circulating biomarkers of fibrosis may have a role in selecting patients and treatment strategy for catheter ablation. Pro-collagen type III N-terminal pro-peptide (PIIINP), C-telopeptide of type I collagen (ICTP), fibroblast growth factor 23 (FGF-23), and galectin 3 (gal-3) have all been suggested as possible biomarkers for this indication, but studies assessing whether peripheral levels reflect intra-cardiac levels are scarce. Methods and results: We studied 93 patients undergoing ablation for paroxysmal atrial fibrillation (AF) (n = 63) or non-paroxysmal AF (n = 30)...
February 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28252047/inhibition-of-proliferation-and-epithelial-mesenchymal-transition-in-retinal-pigment-epithelial-cells-by-heavy-chain-hyaluronan-pentraxin-3
#8
Hua He, Ajay E Kuriyan, Chen-Wei Su, Megha Mahabole, Yuan Zhang, Ying-Ting Zhu, Harry W Flynn, Jean-Marie Parel, Scheffer C G Tseng
Proliferative vitreoretinopathy (PVR) is mediated by proliferation and epithelial mesenchymal transition (EMT) of retinal pigment epithelium (RPE). Because heavy chain-hyaluronic acid/pentraxin 3 (HC-HA/PTX3) purified from human amniotic membrane exerts anti-inflammatory and anti-scarring actions, we hypothesized that HC-HA/PTX3 could inhibit these PVR-related processes in vitro. In this study, we first optimized an ARPE-19 cell culture model to mimic PVR by defining cell density, growth factors, and cultivation time...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101973/heparin-cross-linked-collagen-sponge-scaffolds-improve-functional-regeneration-of-rat-tracheal-epithelium
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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...
May 2017: 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
#17
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
#18
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
#19
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
#20
Erica Dos Santos Carvalho, Rogério Hadid Rosa, Flávia de Moura Pereira, Ana Lia Anbinder, Isabel Mello, Sandra Marcia Habitante, Denise Pontes Raldi
AIM: The search for effective protocols to reduce the incidence of root resorption 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)...
April 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
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