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Lysyl oxidase like 1

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https://www.readbyqxmd.com/read/29615815/cardiac-myo-fibroblasts-modulate-the-migration-of-monocyte-subsets
#1
Kathleen Pappritz, Konstantinos Savvatis, Annika Koschel, Kapka Miteva, Carsten Tschöpe, Sophie Van Linthout
Cardiac fibroblasts play an important role in the regulation of the extracellular matrix and are newly recognized as inflammatory supporter cells. Interferon (IFN)-γ is known to counteract transforming growth factor (TGF)-ß1-induced myofibroblast differentiation. This study aims at investigating in vitro how IFN-γ affects TGF-ß1-induced monocyte attraction. Therefore, C4 fibroblasts and fibroblasts obtained by outgrowth culture from the left ventricle (LV) of male C57BL6/j mice were stimulated with TGF-β1, IFN-γ and TGF-β1 + IFN-γ...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29600404/differential-gene-expression-of-extracellular-matrix-related-proteins-in-the-vaginal-apical-compartment-of-women-with-pelvic-organ-prolapse
#2
Haijiao Wang, Yukimi Kira, Akihiro Hamuro, Aki Takase, Daisuke Tachibana, Masayasu Koyama
INTRODUCTION AND HYPOTHESIS: Pelvic organ prolapse (POP) is a multifactorial disorder that impairs the quality of life (QoL) of older women in particular. The purpose of this study was to elucidate the pathogenesis of POP by focusing on the extracellular matrix (ECM). METHODS: Patients were classified into two groups-with or without cervical elongation-using the POP quantification system. Specimens were obtained from 29 women with POP during hysterectomy. The expression of fibulin-5, elastin, integrin β1 (ITGβ1), lysyl oxidase-like protein-1 (LOXL1) and collagen in the vagina, uterosacral ligament, and uterine cervix was investigated by quantitative real-time polymerase chain reaction (RT-PCR) and correlation between gene levels and severity of POP examined...
March 29, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29590645/pkc%C3%AE%C2%B5-increases-extracellular-elastin-and-fibulin-5-dance-in-dermal-fibroblasts
#3
Tomoyuki Nishizaki
BACKGROUND/AIMS: In the earlier study, the selective PKCε activator DCP-LA increased elastic fibres in the dermis of HR-1 hairless mice. As a process of elastic fibre formation, tropoelastin, an elastin monomer, is secreted into the extracellular space. Secreted tropoelastin is delivered to the microfibrils by fibulin-5/developmental arteries and neural crest epidermal growth factor-like (DANCE) and undergoes self-association. Then, tropoelastin assembles around the microfibrils, growing into elastin and elastic fibres by lysyl oxidase (LOX)- or LOX-like (LOXL)-mediated cross-linking...
March 23, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29547702/inhibition-of-enzymes-involved-in-collagen-cross-linking-reduces-vascular-smooth-muscle-cell-calcification
#4
Eva Jover, Ana Silvente, Francisco Marín, José Martínez-González, Mar Orriols, Carlos M Martinez, Carmen María Puche, Mariano Valdés, Cristina Rodriguez, Diana Hernández-Romero
Vascular smooth muscle cells (VSMCs) transdifferentiate into osteoblast-like cells during vascular calcification, inducing active remodeling and calcification of the extracellular matrix (ECM). Intracellular and extracellular enzymes, such as lysyl hydroxylase 1 (PLOD1) and lysyl oxidase (LOX), contribute to ECM maturation and stabilization. We assessed the contribution of these enzymes to hyperphosphatemia (HPM)-induced calcification. Human and murine VSMCs were differentiated into functional osteoblast-like cells by HPM conditioning...
March 16, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29547474/exfoliation-syndrome-a-disease-of-autophagy-and-loxl1-proteopathy
#5
Audrey M Bernstein, Robert Ritch, J Mario Wolosin
Exfoliation syndrome (XFS) is an age-related disease involving the deposition of aggregated fibrillar material (XFM) at extracellular matrices in tissues that synthesize elastic fibers. Its main morbidity is in the eye, where XFM accumulations form on the surface of the ciliary body, iris and lens. Exfoliation glaucoma (XFG) occurs in a high proportion of persons with XFS and can be a rapidly progressing disease. Worldwide, XFG accounts for about 25% of open-angle glaucoma cases. XFS and XFG show a sharp age-dependence, similarly to the many age-related diseases classified as aggregopathies...
March 15, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29532123/collagen-xviii-and-loxl-4-polymorphisms-in-women-with-and-without-advanced-pelvic-organ-prolapse
#6
Renata G M Dos Santos, Fernanda C A Pepicelli, Nilce C Batista, Cristina V de Carvalho, Maria A T Bortolini, Rodrigo A Castro
INTRODUCTION AND HYPOTHESIS: We verified the presence of single nucleotide polymorphisms (SNP) rs2236479 of the collagen 18 (COL18A1) and rs2862296 of the lysyl oxidase-like 4 (LOXL-4) genes and the association with pelvic organ prolapse (POP) in Brazilian women and determined risk factors for POP development. METHODS: We assessed 532 postmenopausal women divided into POP (stages III and IV) and control (stages 0 and I) groups by examination and peripheral blood sample collection...
March 12, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29513553/anterior-cruciate-ligament-transection-induced-cellular-and-extracellular-events-in-menisci-implications-for-osteoarthritis
#7
Jing Xie, Demao Zhang, Yunfeng Lin, Quan Yuan, Xuedong Zhou
BACKGROUND: The meniscus plays an important role in knee joint diseases such as osteoarthritis (OA). Meniscal injuries can be accompanied by joint catabolic events initiated by inflammation, leading to articular cartilage destruction, but the cellular events responsible for intrinsic meniscal injury and the extracellular matrix changes necessary for meniscal degradation are not well known. PURPOSE: To explore the cellular and matrix-related changes of menisci based on a mouse OA model of anterior cruciate ligament transection (ACLT)...
March 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29450398/cataract-surgery-outcome-in-patients-with-non-glaucomatous-pseudoexfoliation
#8
Praveen Venkatesha Sastry, Anuj Kumar Singal
Aim. To study the outcome of cataract surgery in eyes with pseudoexfoliation without signs of glaucoma. Methods. This prospective study was done over nine months on patients with pseudoexfoliation undergoing small incision cataract surgery. Only patients with normal intraocular pressure (Central Corneal Thickness Corrected), normal cup disc ratio and open angles were included. Patients on anti-glaucoma medication were excluded. Patients underwent surgery performed by a single senior surgeon. Intraoperative and postoperative day (POD) 1 findings were noted...
July 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29438669/trans-suppression-of-host-cdh3-and-loxl4-genes-during-cryptosporidium-parvum-infection-involves-nuclear-delivery-of-parasite-cdg7_flc_1000-rna
#9
Zhenping Ming, Ai-Yu Gong, Yang Wang, Xin-Tian Zhang, Min Li, Yao Li, Jing Pang, Stephanie Dong, Juliane K Strauss-Soukup, Xian-Ming Chen
Intestinal infection by Cryptosporidium parvum causes significant alterations in the gene expression profile in host epithelial cells. Previous studies demonstrate that a panel of parasite RNA transcripts of low protein-coding potential are delivered into infected host cells and may modulate host gene transcription. Using in vitro models of human intestinal cryptosporidiosis, we report here that trans-suppression of the cadherin 3 (CDH3) and lysyl oxidase like 4 (LOXL4) genes in human intestinal epithelial cells following C...
February 10, 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29434955/association-between-lysyl-oxidase-and-fibrotic-focus-in-relation-with-inflammation-in-breast-cancer
#10
Young Ju Jeong, Sung Hwan Park, Sung Hee Mun, Sang Gyu Kwak, Sun-Jae Lee, Hoon Kyu Oh
We hypothesized that lysyl oxidase (LOX) contributes to the formation of fibrotic focus (FF) in association with inflammation and serves a significant role in breast carcinogenesis. In the present study, the association between the expression of LOX family members and FF with regards to with inflammation was analyzed, and the prognostic significance of LOX and FF in breast cancer was investigated. Immunohistochemical staining for LOX, LOX-like protein (LOXL) 1, LOXL2 and LOXL3 was performed in primary breast cancer tissues...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29432335/extracellular-matrix-regulation-and-dysregulation-in-exfoliation-syndrome
#11
Matthias Zenkel
Several lines of evidence, such as ultrastructural signs for activated fibrillogenesis and excessive production of elastic microfibrillar components in the anterior segment of the eye and throughout the body, indicate that exfoliation syndrome (XFS) is an elastic microfibrillopathy, leading to the accumulation of an abnormal extracellular fibrillar material (XFM). The upregulation of elastic microfibrillar components is paralleled by the selective upregulation of the cross-linking enzyme lysyl oxidase-like 1 (LOXL1) in the early phase of the disease, suggesting that LOXL1 participates in the stabilization of newly synthesized elastic proteins and finally in the stable accumulation of XFM...
February 9, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29432334/mechanisms-of-glaucoma-in-exfoliation-syndrome
#12
Mineo Ozaki
The most important characteristic of exfoliation syndrome (XFS) is that it involves a greater risk of developing glaucoma. In comparison with other forms of open-angle glaucoma, exfoliation glaucoma (XFG) is more resistant to medical therapy and progresses faster. Possible pathological mechanisms of glaucoma development in XFS comprise: (1) elevated intraocular pressure (IOP) caused by functional impairment of aqueous humor outflow due to deposition of exfoliation material (XFM) in the trabecular meshwork and trabecular cell dysfunction, (2) XFS-associated connective tissue elastosis leading to structural and functional alterations of the lamina cribrosa which increases the vulnerability toward elevated IOP and development of glaucomatous optic neuropathy, (3) elevated IOP due to closure of the anterior chamber angle accompanied by forward displacement of the crystalline lens due to zonular weakness, (4) presumable primary functional impairment of retinal ganglion cells...
February 9, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29419646/lysyl-oxidases-functions-and-disorders
#13
Fernando Rodriguez-Pascual, Tamara Rosell-Garcia
Lysyl oxidases (LOX) are copper-dependent enzymes that oxidize lysyl and hydroxylysyl residues in collagen and elastin, as a first step in the stabilization of these extracellular matrix (ECM) proteins through the formation of covalent cross-linkages, an essential process for connective tissue maturation. Five different LOX enzymes have been identified in mammals, LOX and LOX-like (LOXL) 1 to 4, being genetically different protein products with a high degree of homology in the catalytic carboxy terminal end and a more variable amino terminal pro-region...
February 6, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29366776/inhibition-of-lysyl-oxidase-like-1-loxl1-expression-arrests-liver-fibrosis-progression-in-cirrhosis-by-reducing-elastin-crosslinking
#14
Wenshan Zhao, Aiting Yang, Wei Chen, Ping Wang, Tianhui Liu, Min Cong, Anjian Xu, Xuzhen Yan, Jidong Jia, Hong You
Mature crosslinked-poly-elastin deposition has been found to be associated with liver fibrosis. However, the regulation of crosslinked/insoluble elastin in liver fibrosis remains largely unknown. Here, we investigated the contribution of lysyl oxidases (LOXs) family, mediated elastin crosslinking, to liver fibrogenesis. We established carbon tetrachloride (CCl4 )-induced liver fibrotic and cirrhotic models and found that crosslinked/insoluble elastin levels spiked only in cirrhosis stage during disease progression, in comparison to collagen Ι levels which increased continuously though all stages...
April 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29352658/role-of-hypoxia-inducible-factor-1-in-the-development-of-renal-fibrosis-in-mouse-obstructed-kidney-special-references-to-hif-1-dependent-gene-expression-of-profibrogenic-molecules
#15
Kazuya Kabei, Yu Tateishi, Masakazu Nozaki, Masako Tanaka, Masayuki Shiota, Mayuko Osada-Oka, Shunji Nishide, Junji Uchida, Tatsuya Nakatani, Shuhei Tomita, Katsuyuki Miura
The aim of the study is to clarify the role of hypoxia-inducible factor-1 (HIF-1) in the development of renal fibrosis in mouse obstructive nephropathy. We used mice with floxed HIF-1α alleles and tamoxifen-inducible Cre/ERT2 recombinase under ubiquitin C promoter to induce global HIF-1α deletion. Following tamoxifen administration, mice were subjected to unilateral ureteral obstruction (UUO). At 3, 7 and 14 days after UUO, renal gene expression profiles and interstitial fibrosis were assessed. HIF-1 dependent up-regulation of prolyl hydroxylase 3 and glucose transporter-1 was observed in the obstructed kidney at 3 and 7 days but not at 14 days after UUO...
January 2018: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29207131/lysyl-oxidases-expression-and-histopathological-changes-of-the-diabetic-rat-nephron
#16
Jun Chen, Jie Ren, Wings T Y Loo, Liang Hao, Min Wang
Diabetic nephropathy (DN) is a major complication of diabetes, the accumulation of extracellular matrix (ECM) is considered an indication of nephropathological changes. Lysyl oxidases (LOXs) are also associated with ECM. However, the majority of studies on LOXs have focused on their potential role in renal fibrogenesis and there has no examination of LOXs expression or the correlation with histopathological changes of DN, including glomerular basement membrane (GBM) thickening and glomerulosclerosis. In this study, the association between histological changes and LOXs was explored using a type 2 diabetes model of male Zucker diabetic fatty rats...
February 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29164236/posttranscriptional-regulation-of-loxl1-expression-via-alternative-splicing-and-nonsense-mediated-mrna-decay-as-an-adaptive-stress-response
#17
Daniel Berner, Matthias Zenkel, Francesca Pasutto, Ursula Hoja, Panah Liravi, Gabriele C Gusek-Schneider, Friedrich E Kruse, Johannes Schödel, Andre Reis, Ursula Schlötzer-Schrehardt
Purpose: Alternative mRNA splicing coupled to nonsense-mediated decay (NMD) is a common mRNA surveillance pathway also known to dynamically modulate gene expression in response to cellular stress. Here, we investigated the involvement of this pathway in the regulation of lysyl oxidase-like 1 (LOXL1) expression in response to pseudoexfoliation (PEX)-associated pathophysiologic factors. Methods: Transcript levels of LOXL1 isoforms were determined in ocular tissues obtained from donor eyes without and with PEX syndrome...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29115860/lysyl-oxidase-like-1-protein-deficiency-protects-mice-from-adtgf-%C3%AE-1-induced-pulmonary-fibrosis
#18
Pierre-Simon Bellaye, Chiko Shimbori, Chandak Upagupta, Seidai Sato, Wei Shi, Jack Gauldie, Kjetil Ask, Martin Kolb
Idiopathic pulmonary fibrosis (IPF) is a progressive disease characterised by excessive deposition of extracellular matrix (ECM) in the lung parenchyma. The abnormal ECM deposition slowly overtakes normal lung tissue disturbing gas-exchange and leading to respiratory failure and death. ECM cross-linking and subsequent stiffening is thought to be a major contributor of disease progression and also promotes the activation of TGF-β1, one of the main pro-fibrotic growth factors. Lysyl oxidase-like1 (LOXL1) belongs to the crosslinking enzyme family and has been shown to be upregulated in active fibrotic regions of bleomycin-treated mice and IPF patients...
November 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29089463/increased-serum-lysyl-oxidase-like-2-levels-correlate-with-the-degree-of-left-atrial-fibrosis-in-patients-with-atrial-fibrillation
#19
Yingming Zhao, Kangting Tang, Xu Tianbao, Junhong Wang, Jin Yang, Dianfu Li
Atrial fibrillation (AF) progression is generally accompanied by increased atrial fibrosis and atrial structural remodeling. Lysyl oxidase-like 2 (LOXL2) is known to play an important role in many fibrotic conditions, including cardiac fibrosis. The present study aimed to explore the relationship between serum LOXL2 levels and AF. Fifty-four AF patients and 32 control subjects were enrolled in the study. High-density three-dimensional electroanatomic mapping was performed, and mean bipolar voltage was assessed in AF patients...
December 22, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29053339/ecm-crosslinking-enhances-fibroblast-growth-and-protects-against-matrix-proteolysis-in-lung-fibrosis
#20
Christopher J Philp, Ivonne Siebeke, Debbie Clements, Suzanne Miller, Anthony Habgood, Alison E John, Vidya Navaratnam, Richard B Hubbard, Gisli Jenkins, Simon R Johnson
Idiopathic pulmonary fibrosis (IPF) is characterised by accumulation of extra cellular matrix (ECM) proteins and fibroblast proliferation. ECM cross-linking enzymes have been implicated in fibrotic diseases and we hypothesised that the ECM in IPF is abnormally cross-linked which enhances fibroblast growth and resistance to normal ECM turnover. We used a combination of in vitro ECM preparations and in vivo assays to examine the expression of cross-linking enzymes and the effect of their inhibitors on fibroblast growth and ECM turnover...
October 20, 2017: American Journal of Respiratory Cell and Molecular Biology
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