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Fibroblast collagen

Robert J Morrison, Nicolas-George Katsantonis, Kevin M Motz, Alexander T Hillel, C Gaelyn Garrett, James L Netterville, Christopher T Wootten, Susan M Majka, Timothy S Blackwell, Wonder P Drake, Alexander Gelbard
Objective To characterize the phenotype and function of fibroblasts derived from airway scar in idiopathic subglottic stenosis (iSGS) and to explore scar fibroblast response to interleukin 17A (IL-17A). Study Design Basic science. Setting Laboratory. Subjects and Methods Primary fibroblast cell lines from iSGS subjects, idiopathic pulmonary fibrosis subjects, and normal control airways were utilized for analysis. Protein, molecular, and flow cytometric techniques were applied in vitro to assess the phenotype and functional response of disease fibroblasts to IL-17A...
October 16, 2018: Otolaryngology—Head and Neck Surgery
A Z Szóstek-Mioduchowska, K Lukasik, D J Skarzynski, K Okuda
Transforming growth factor (TGF)-β1 not only regulates cell growth, development, and tissue remodeling, but it also participates in the pathogenesis of tissue fibrosis. In the equine endometrium, the concentration of TGF-β1 is correlated with endometrosis (equine endometrial fibrosis). In other tissues, TGF-β1 induces differentiation of many cell types into myofibroblasts. These cells are characterized by α-smooth muscle actin (α-SMA) expression and an ability to deposit excessive amounts of extracellular matrix (ECM) components...
October 4, 2018: Theriogenology
Jonathan Dale Ho, Hye Jin Chung, Alexander Ms Barron, Djavila Amari Ho, Debjani Sahni, Jeffrey L Browning, Jag Bhawan
BACKGROUND: CD90 fibroblasts have been described arising from and replacing the homeostatic CD34 network in scleroderma, but have not been specifically examined in other forms of cutaneous fibrosis. OBJECTIVES: To address expression, timelines, and spatial relationships of CD90, CD34, and smooth muscle actin (SMA) expressing fibroblasts in scars and to examine for the presence of a CD34-to-CD90 transition. METHODS: One hundred and seventeen scars (reparative/hypertrophic/keloidal) were evaluated for CD90, CD34, and SMA expression...
September 4, 2018: American Journal of Dermatopathology
Yanqing Wu, Yiyang Li, Ting Jiang, Yuan Yuan, Rui Li, Zeping Xu, Xingfeng Zhong, Gaili Jia, Yanlong Liu, Ling Xie, Ke Xu, Hongyu Zhang, Xiaokun Li, Jian Xiao
Diabetic nephropathy (DN) is one of general and common complication of diabetes, which severely affects the physical and mental health of diabetic patients. Fibroblast growth factor 1 (FGF1), an effective control agent of blood glucose, plays an effective treatment role on diabetes-induced renal injury. But the specific molecule mechanism underlying it is still unclear. Since induction of cellular stress is the main and common mechanism of diabetes-induced complication, we hypothesized that reduction of cellular stress is also the molecular mechanism of FGF1 treatment for DN...
October 15, 2018: Journal of Cellular and Molecular Medicine
Xiaohong Wen, Yuan Liu, Yu Bai, Mingwei Li, Qiang Fu, Yi Zheng
A previous study demonstrated that Lysyl oxidase‑like 2 (LOXL2) serves an essential role in matrix remodeling and fibrogenesis, thus indicating its involvement in fibrosis‑associated diseases. Our previous studies revealed a novel association between LOXL2 expression and pulmonary fibrosis in mice. However, the exact role and mechanisms of LOXL2 in interstitial lung disease remain poorly understood. The present study aimed to detect LOXL2 expression in mice with bleomycin (BLM)‑induced pulmonary fibrosis, and explore the effects of silencing LOXL2 on the proliferation, activation and fibrosis process of mouse lung fibroblasts (MLFs)...
October 11, 2018: International Journal of Molecular Medicine
Kyu-Hee Hwang, Ji-Hee Kim, Eun Young Park, Seung-Kuy Cha
Wound healing is a physiological restorative response to tissue and cell injury. This process occurs in collaboration with a complex cascade of cellular events, including biochemical alterations to the extracellular matrix. Polydeoxyribonucleotide (PDRN) is a fragmented DNA mixture from Oncorhynchus mykiss or Oncorhynchus keta sperm known to promote tissue regeneration under different pathophysiological conditions. However, the most effective molecular size of PDRNs for promoting the wound healing process and quality has not been established...
October 8, 2018: Molecular Medicine Reports
Youakim Saliba, Victor Jebara, Joelle Hajal, Richard Maroun, Stéphanie Chacar, Viviane Smayra, Joel Abramowitz, Lutz Birnbaumer, Nassim Fares
AIMS: Cardiac fibroblasts (CFs) are emerging as major contributors to myocardial fibrosis (MF), a final common pathway of many etiologies of heart disease. Here, we studied the functional relevance of transient receptor potential canonical 3 (TRPC3) channels and nuclear factor of activated T-cells c3 (NFATc3) signaling in rodent and human ventricular CFs, and whether their modulation would limit MF. RESULTS: A positive-feedback loop between TRPC3 and NFATc3 drove a rat ventricular CF fibrotic phenotype...
October 15, 2018: Antioxidants & Redox Signaling
Keywan Mortezaee, Nasser Hashemi Goradel, Peyman Amini, Dheyauldeen Shabeeb, Ahmed Eleojo Musa, Masoud Najafi, Bagher Farhood
BACKGROUND: Radiotherapy is a treatment modality for cancer. For better therapeutic efficiency, it could be used in combination with surgery, chemotherapy or immunotherapy. In addition to its beneficial therapeutic effects, exposure to radiation leads to several toxic effects on normal tissues. Also, it may induce some changes in genomic expression of tumor cells, thereby increasing the resistance of tumor cells. These changes lead to the appearance of some acute reactions in irradiated organs, increased risk of carcinogenesis, and reduction in the therapeutic effect of radiotherapy...
October 10, 2018: Current Molecular Pharmacology
H Balci Yuce, Ö Karatas, F Tulu, A Altan, F Gevrek
Diabetes mellitus and periodontitis are chronic inflammatory diseases that disrupt soft tissue metabolism. The diseases separately or together increase apoptosis in gingival fibroblast cells and reduce cell renewal. We investigated the effects of diabetes and periodontitis on the composition and structure of gingival connective tissue. We used gingival biopsies from 16 healthy individuals (control group, C), 16 type 2 diabetic patients with chronic periodontitis (diabetes + periodontitis group, D + P) and 16 healthy chronic periodontitis patients (periodontitis group, P)...
October 15, 2018: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
Xue-Liang Zhou, Yi-Hu Fang, Li Wan, Qi-Rong Xu, Huang Huang, Rong-Rong Zhu, Qi-Cai Wu, Ji-Chun Liu
PURPOSE: During myocardial infarction (MI), cardiac fibroblasts (CFs) transform into myofibroblast (CMT). This study aimed to investigate the crosstalk of Notch1 and transforming growth factor-β1 (TGF-β1)/Smad3 signaling in the regulation of CMT and myocardial fibrosis. METHODS: Primary CFs were isolated from young rats and treated with TGF-β1 or adenovirus to overexpress or knockdown Notch1 intracellular domain (N1ICD) or Smad3. RESULTS: TGF-β1 decreased the expression of fibroblast markers but increased the expression of myofibroblast markers in rat CFs...
October 14, 2018: Journal of Cellular Physiology
Quentin Muller, Marie-Josée Beaudet, Thiéry De Serres-Bérard, Sabrina Bellenfant, Vincent Flacher, François Berthod
Cutaneous innervation is increasingly recognized as a major element of skin physiopathology through the neurogenic inflammation driven by neuropeptides that are sensed by endothelial cells and the immune system. To investigate this process in vitro, models of innervated tissue-engineered skin (TES) were developed, yet exclusively with murine sensory neurons extracted from dorsal root ganglions. In order to build a fully human model of innervated TES, we used induced pluripotent stem cells (iPSC) generated from human skin fibroblasts...
October 10, 2018: Acta Biomaterialia
Ting Gong, Chi Zhang, Jing Kang, J J Lamb, Jack J Jiang
OBJECTIVES/HYPOTHESIS: Vocal fold scarring remains a major treatment challenge, and scar prevention without residual lesions remains a dilemma. Cryotherapy has shown cosmetic outcomes on skin lesions with minimal scarring. The aim of this study was to clarify the beneficial effects of cryotherapy for the prevention and the treatment of vocal fold scarring. STUDY DESIGN: In vitro. METHODS: Primary cultures of human vocal fold fibroblasts (VFFs) were used in this study...
October 12, 2018: Laryngoscope
Xionglin Chen, Xiaoming Cao, He Jiang, Xiangxin Che, Xiaoyuan Xu, Baicheng Ma, Jie Zhang, Tao Huang
: Skin wound healing is a complex and dynamic process that involves angiogenesis and growth factor secretion. Newly formed vessels can provide nutrition and oxygen for skin wound healing. Growth factors in skin wounds are important for keratinocytes and fibroblasts proliferation, epithelialization, extracellular matrix remodeling, and angiogenesis, which accelerate skin wound healing. Therefore, treatment strategies that enhance angiogenesis and growth factors secretion in skin wounds can accelerate skin wound healing...
October 11, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Soo Kim, Seul Ki Lee, Hyunjung Kim, Tae Min Kim
Induced pluripotent stem cell (iPSC)-derived mesenchymal stem cells (iMSCs) serve as a unique source for cell therapy. We investigated whether exosomes from iMSCs promote the proliferation of human keratinocytes (HaCaT) and human dermal fibroblasts (HDFs). iPSCs were established from human Wharton's jelly MSCs and were allowed to differentiate into iMSCs. Exosomes were collected from the culture supernatant of MSCs (MSC-exo) and iMSCs (iMSC-exo), and their characteristics were investigated. Both exosome types possessed basic characteristics of exosomes and were taken up by skin cells in vitro and in vivo...
October 11, 2018: International Journal of Molecular Sciences
Christopher Rahimi, Benjamin Rahimi, Dominic Padova, Seyed A Rooholghodos, Diane R Bienek, Xiaolong Luo, Gili Kaufman, Christopher B Raub
The human oral mucosa hosts a diverse microbiome and is exposed to potentially toxic biomaterials from dental restoratives. Mucosal health is partly determined by cell and tissue responses to challenges such as dental materials and pathogenic bacteria. An in vitro model to rapidly determine potential layer-specific responses would lead to a better understanding of mucosal homeostasis and pathology. Therefore, this study aimed to develop a co-cultured microfluidic mucosal model on-a-chip to rapidly assess mucosal remodeling and the responses of epithelial and subepithelial layers to challenges typically found in the oral environment...
September 2018: Biomicrofluidics
Yan Li, Julei Zhang, Qin Zhou, Hongtao Wang, Songtao Xie, Xuekang Yang, Peng Ji, Wanfu Zhang, Ting He, Yang Liu, Kejia Wang, Xiaoqiang Li, Jihong Shi, Dahai Hu
Hypertrophic scar (HS) is a fibro-proliferative disease after serious burns, the underlying mechanism remains unknown. The study was performed to clarify the effect of high glucose (HG) on HS. The expression of Col1, Col3 and α-SMA were up-regulated in HS derived fibroblasts (HSFs) exposed to HG (20mM, 30mM), and HG activated the phosphorylated protein expression of IGF/Akt/mTOR signaling pathway in HSFs. Dpp4, a marker targeted the treatment of diabetes mellitus, was overexpressed in HG-induced HSFs. Linagliptin, a Dpp4 inhibitor, played the anti-fibrosis role in HSFs exposed to HG, the levels of Col1, Col3 and α-SMA were significantly down-regulated, the cell proliferation and migration was also inhibited...
October 11, 2018: Experimental Dermatology
Shiyi Yao, Yuanlong Xie, Lingfei Xiao, Lin Cai, Zhaocheng Ma
Two types of silk fibroin (SF) membranes were developed for tendon repair: porous and nonporous SF membranes. The objective of this study was to compare the efficiency of these two films according to the ability of tendon regeneration using a rat Achilles tendon (AT) rupture suture wrapping model. The in vitro tests were conducted, and theSF membranes were proved to be with ultimate-biodegradability, good-biocompatibility and without toxicity. In vivo, 12 Sprague Dawley rats were used to create a rat AT rupture suture model wrapped by SF membranes...
October 11, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
C Rallière, A Branthonne, P Y Rescan
The formation of the intramuscular connective tissue was investigated in rainbow trout Oncorhynchus mykiss by combining histological and in situ gene-expression analysis. Laminin, a primary component of basement membranes, surrounded superficial slow and deep fast muscle fibres in O. mykiss as soon as the hatching stage (c. 30 days post fertilization (dpf)). In contrast, type I collagen, the primary fibrillar collagen in muscle of vertebrates, appeared at the surface of individual slow and fast muscle fibres only at c...
October 10, 2018: Journal of Fish Biology
Guang-Zhen Jin, Hae-Won Kim
Dedifferentiation of chondrocytes remains a major problem in cartilage tissue engineering. The development of hydrogels that can preserve chondrogenic phenotype and prevent chondrocyte dedifferentiation is a meaningful strategy to solve dedifferentiation problem of chondrocytes. In the present study, three gels were prepared (alginate gel (Alg gel), type I collagen gel (Col gel), and their combination gel (Alg/Col gel)), and the in vitro efficacy of chondrocytes culture while preserving their phenotypes was investigated...
January 2018: Journal of Tissue Engineering
Xiu Li, Menghua Sun, Suzhen Men, Yanan Shi, Lijuan Ma, Yongqiang An, Yaqing Gao, Hui Jin, Wei Liu, Zuoyi Du
The aim of the present study was to investigate the mechanisms of CCAAT/enhancer-binding protein β (C/EBPβ) in cardiac myofibroblast (CMF) differentiation and in a rat model of cardiac fibrosis induced by experimental autoimmune myocarditis (EAM).In vitro studies performed in primary neonatal rat CMF revealed that silencing of C/EBPβ expression (via lentiviral mediated shRNA strategies) was sufficient to reduce C/EBPβ mRNA and protein levels as well as to decrease the expressions of actin cytoskeletal proteins, cofilin, and filamin A (FLNA)...
October 10, 2018: International Heart Journal
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