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Peritoneal fibrosis

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https://www.readbyqxmd.com/read/28540637/importance-of-human-peritoneal-mesothelial-cells-in-the-progression-fibrosis-and-control-of-gastric-cancer-inhibition-of-growth-and-fibrosis-by-tranilast
#1
Hiroto Saito, Sachio Fushida, Shinichi Harada, Tomoharu Miyashita, Katsunobu Oyama, Takahisa Yamaguchi, Tomoya Tsukada, Jun Kinoshita, Hidehiro Tajima, Itasu Ninomiya, Tetsuo Ohta
BACKGROUND: Scirrhous gastric cancer is an intractable disease with a high incidence of peritoneal dissemination and obstructive symptoms (e.g., ileus, jaundice, and hydronephrosis) arising from accompanying marked fibrosis. Microenvironmental interactions between cancer cells and cancer-associated fibroblasts are the suggested cause of the disease. We elucidated the mechanisms of tumor growth and fibrosis using human peritoneal mesothelial cells (HPMCs) and investigated the effects of tranilast treatment on cells and a xenograft mouse model of fibrosis...
May 24, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28540200/targeting-cannabinoid-signaling-for-peritoneal-dialysis-induced-oxidative-stress-and-fibrosis
#2
REVIEW
Chih-Yu Yang, Yat-Pang Chau, Ann Chen, Oscar Kuang-Sheng Lee, Der-Cherng Tarng, An-Hang Yang
Long-term exposure to bioincompatible peritoneal dialysis (PD) solutions frequently results in peritoneal fibrosis and ultrafiltration failure, which limits the life-long use of and leads to the cessation of PD therapy. Therefore, it is important to elucidate the pathogenesis of peritoneal fibrosis in order to design therapeutic strategies to prevent its occurrence. Peritoneal fibrosis is associated with a chronic inflammatory status as well as an elevated oxidative stress (OS) status. Beyond uremia per se, OS also results from chronic exposure to high glucose load, glucose degradation products, advanced glycation end products, and hypertonic stress...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28507181/fli1-deficiency-induces-cxcl6-expression-in-dermal-fibroblasts-and-endothelial-cells-contributing-to-the-development-of-fibrosis-and-vasculopathy-in-systemic-sclerosis
#3
Takashi Taniguchi, Yoshihide Asano, Kouki Nakamura, Takashi Yamashita, Ryosuke Saigusa, Yohei Ichimura, Takehiro Takahashi, Tetsuo Toyama, Ayumi Yoshizaki, Shinichi Sato
OBJECTIVE: CXCL6, a chemokine with proangiogenic property, is reported to be involved in vasculopathy associated with systemic sclerosis (SSc). We investigated the contribution of CXCL6 to SSc development by focusing on the association of friend leukemia virus integration 1 (Fli1) deficiency, a potential predisposing factor of SSc, with CXCL6 expression and clinical correlation of serum CXCL6 levels. METHODS: mRNA levels of target genes and the binding of Fli1 to the CXCL6 promoter were evaluated by quantitative reverse transcription-PCR and chromatin immunoprecipitation, respectively...
May 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28501766/therapeutic-effects-of-zerumbone-in-an-alkali-burned-corneal-wound-healing-model
#4
Jong Won Kim, Hyuneui Jeong, Myeon-Sik Yang, Chae Woong Lim, Bumseok Kim
Cornea is an avascular transparent tissue. Ocular trauma caused by a corneal alkali burn induces corneal neovascularization (CNV), inflammation, and fibrosis, leading to vision loss. The purpose of this study was to examine the effects of Zerumbone (ZER) on corneal wound healing caused by alkali burns in mice. CNV was induced by alkali-burn injury in BALB/C female mice. Topical ZER (three times per day, 3μl each time, at concentrations of 5, 15, and 30μM) was applied to treat alkali-burned mouse corneas for 14 consecutive days...
May 11, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28495878/local-amplifiers-of-il-4r%C3%AE-mediated-macrophage-activation-promote-repair-in-lung-and-liver
#5
Carlos M Minutti, Lucy H Jackson-Jones, Belén García-Fojeda, Johanna A Knipper, Tara E Sutherland, Nicola Logan, Emma Rinqvist, Raquel Guillamat-Prats, David A Ferenbach, Antonio Artigas, Cordula Stamme, Zissis C Chroneos, Dietmar M Zaiss, Cristina Casals, Judith E Allen
The type 2 immune response controls helminth infection and maintains tissue homeostasis but can lead to allergy and fibrosis if not adequately regulated. We have discovered local tissue-specific amplifiers of type-2 mediated-macrophage activation. In the lung, surfactant protein A (SP-A) enhanced IL-4-dependent macrophage proliferation and activation, accelerating parasite clearance and reducing pulmonary injury following infection with a lung-migrating helminth. In the peritoneal cavity and liver, C1q enhancement of type 2 macrophage activation was required for liver repair following bacterial infection, but resulted in fibrosis following peritoneal dialysis...
May 11, 2017: Science
https://www.readbyqxmd.com/read/28495592/mir-21-promotes-fibrogenesis-in-peritoneal-dialysis
#6
Melisa Lopez-Anton, Mark Lambie, Manuel Lopez-Cabrera, Claus P Schmitt, Vicente Ruiz-Carpio, Maria Bartosova, Betti Schaefer, Simon Davies, Timothy Stone, Robert Jenkins, Philip R Taylor, Nicholas Topley, Timothy Bowen, Donald Fraser
Peritoneal dialysis (PD) is a life-saving form of renal replacement therapy for those with end-stage kidney disease. Mesothelial cells (MCs) line the peritoneal cavity and help define peritoneal response to treatment-associated injury, a major reason for treatment failure. miRNAs are important regulators, but their roles in peritoneal fibrosis are largely unknown. In this study, miR-21 was one of the most abundant miRNAs in primary MCs, and was up-regulated by the profibrotic cytokine transforming growth factor-β1 and in PD effluent-derived MCs exhibiting mesenchymal phenotypic change...
May 8, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28486700/dysregulation-of-the-adam17-notch-signalling-pathways-in-endometriosis-from-oxidative-stress-to-fibrosis
#7
Iñaki González-Foruria, Pietro Santulli, Sandrine Chouzenoux, Francisco Carmona, Charles Chapron, Frédéric Batteux
STUDY QUESTION: Is oxidative stress associated with the A disintegrin and metalloproteases (ADAM) metallopeptidase domain 17 (ADAM17)/Notch signalling pathway and fibrosis in the development of endometriosis? SUMMARY ANSWER: Oxidative stress is correlated with hyperactivation of the ADAM17/Notch signalling pathway and a consequent increase in fibrosis in patients with endometriosis. WHAT IS KNOWN ALREADY: It is nowadays accepted that oxidative stress plays an important role in the onset and progression of endometriosis...
May 9, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28428333/the-microrna-199a-214-cluster-targets-e-cadherin-and-claudin-2-and-promotes-high-glucose-induced-peritoneal-fibrosis
#8
Mingwen Che, Tiantian Shi, Shidong Feng, Huan Li, Xiaomin Zhang, Ning Feng, Weijuan Lou, Jianhua Dou, Guangbo Tang, Chen Huang, Guoshuang Xu, Qi Qian, Shiren Sun, Lijie He, Hanmin Wang
Serum response factor (SRF) was found to be involved in the phenotypic transition and fibrosis of the peritoneal membrane during treatment with peritoneal dialysis (PD), but the exact mechanism remains unclear. SRF regulates microRNAs (miRNAs) that contain the SRF-binding consensus (CArG) element in the promoter region. Therefore, we investigated whether the miR-199a/214 gene cluster, which contains a CArG element in its promoter, is directly regulated by SRF. High-glucose (HG) treatment significantly unregulated the expression of the miR-199a-5p/214-3p gene cluster in human peritoneal mesothelial cells (HPMCs)...
April 20, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28403123/influence-of-genetic-variations-in-the-sod1-gene-on-the-development-of-ascites-and-spontaneous-bacterial-peritonitis-in-decompensated-liver-cirrhosis
#9
Sebastian Schwab, Jennifer Lehmann, Philipp Lutz, Christian Jansen, Beate Appenrodt, Frank Lammert, Christian P Strassburg, Ulrich Spengler, Hans-Dieter Nischalke, Jonel Trebicka
BACKGROUND: The balance between generation and elimination of reactive oxygen species by superoxide dismutase (SOD) is crucially involved in the pathophysiology of liver cirrhosis. Reactive oxygen species damage cells and induce inflammation/fibrosis, but also play a critical role in immune defense from pathogens. As both processes are involved in the development of liver cirrhosis and its complications, genetic variation of the SOD1 gene was investigated. PATIENTS AND METHODS: Two SOD1 single nucleotide polymorphisms (rs1041740 and rs3844942) were analyzed in 49 cirrhotic patients undergoing liver transplantation...
April 11, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28393968/-encapsulating-peritoneal-sclerosis
#10
Rubén Torres, Paula Ebner, María Eugenia Sanhueza, Miriam Alvo, Erico Segovia, Paula Segura
BACKGROUND: Encapsulating peritoneal sclerosis (EPS) is a complication of peritoneal dialysis (PD) with a low prevalence but high mortality. It is characterized by peritoneal inflammation and fibrosis with subsequent development of intestinal encapsulation. It is associated with a long lapse on PD, frequent episodes of peritonitis, high glucose solution use, and high peritoneal transport status. AIM: To report the clinical features of patients on PD, who developed EPS...
January 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28373987/hydrocephalus-after-subarachnoid-hemorrhage-pathophysiology-diagnosis-and-treatment
#11
REVIEW
Sheng Chen, Jinqi Luo, Cesar Reis, Anatol Manaenko, Jianmin Zhang
Hydrocephalus (HCP) is a common complication in patients with subarachnoid hemorrhage. In this review, we summarize the advanced research on HCP and discuss the understanding of the molecular originators of HCP and the development of diagnoses and remedies of HCP after SAH. It has been reported that inflammation, apoptosis, autophagy, and oxidative stress are the important causes of HCP, and well-known molecules including transforming growth factor, matrix metalloproteinases, and iron terminally lead to fibrosis and blockage of HCP...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28373051/telomere-length-profiles-in-primary-human-peritoneal-mesothelial-cells-are-consistent-with-senescence
#12
Melisa Lopez-Anton, András Rudolf, Duncan M Baird, Laureline Roger, Rhiannon E Jones, Janusz Witowski, Donald J Fraser, Timothy Bowen
Mesothelial cell (MC) senescence contributes to malignancy and tissue fibrosis. The role of telomere erosion in MC senescence remains controversial, with evidence for both telomere-dependent and telomere-independent mechanisms reported. Single telomere length analysis revealed considerable telomere length heterogeneity in freshly isolated human peritoneal MCs, reflecting a heterogeneous proliferative history and providing high-resolution evidence for telomere-dependent senescence. By contrast the attenuated replicative lifespan, lack of telomere erosion and induction of p16 expression in in vitro-aged cells was consistent with stress-induced senescence...
April 1, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28362076/a-systematic-review-of-preclinical-studies-on-therapeutic-potential-of-stem-cells-or-stem-cells-products-in-peritoneal-fibrosis
#13
Sudabeh Alatab, Iraj Najafi, Rasha Atlasi, Gholamreza Pourmand, Ozra Tabatabaei-Malazy, Naser Ahmadbeigi
INTRODUCTION: Peritoneal fibrosis remains a serious complication of long-term peritoneal dialysis. Stem cell therapy is an innovative field of scientific investigation with potential for clinical application. Here, we systematically reviewed the studies to determine whether stem cell based therapy could improve the peritoneal fibrosis in experimental models of peritoneal fibrosis. EVIDENCE ACQUISITION: Our systematic search of Pubmed, Scopus, Web of Science, and Cochrane Library yield 5219 article...
March 31, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28322621/bladder-regeneration-using-multiple-acellular-scaffolds-with-growth-factors-in-a-bladder
#14
Luc A J Roelofs, Paul K J D de Jonge, Egbert Oosterwijk, Dorien M Tiemessen, Barbara B M Kortmann, Robert P E de Gier, Elly M M Versteeg, Willeke F Daamen, Toin H van Kuppevelt, Paul J Geutjes, Wout F J Feitz
INTRODUCTION: Tissue engineering may become an alternative to current bladder augmentation techniques. Large scaffolds are needed for clinically significant augmentation, but can result in fibrosis and graft shrinkage. The purpose of this study was to investigate the use of multiple scaffolds instead of one large scaffold, to enhance bladder tissue regeneration and bladder capacity. Second, acellular collagen, collagen-heparin, and collagen-heparin scaffolds with growth factors (GFs) were used and the biological activity of the different scaffolds was compared in a large animal model...
May 2, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28292218/high-glucose-induces-alternative-activation-of-macrophages-via-pi3k-akt-signaling-pathway
#15
Jie Wang, Jingjing Liu, Yuying Wang, Minghui Lin, Wei Tian, Lingling Zhou, Xiaoyin Ye, Lihang Lin
OBJECTIVE: It has been proved that lactate-4.25% dialysate could result in peritoneal fibrosis by inducing alternative activation of macrophages in our previous study, but the mechanism of high glucose-induced alternative activation has not been elucidated. This study was, therefore, to investigate the mechanism by high glucose stimuli. METHODS: In this study, Raw264.7 (murine macrophage cell line) cells were cultured and stimulated by 4.25% glucose medium, and mannitol medium was used as osmotic pressure control...
March 15, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28285209/acute-large-bowel-pseudo-obstruction-due-to-atrophic-visceral-myopathy-a-case-report
#16
Sean M Wrenn, Charles S Parsons, Michelle Yang, Ajai K Malhotra
PURPOSE: Atrophic visceral myopathy is a pathological diagnosis characterized by atrophy of the smooth muscle layers of the viscera with intact ganglia. Rarely, it can present acutely as an intestinal pseudo-obstruction. We describe a rare case report and explore how this diagnosis can be distinguished from other forms of intestinal obstruction. CASE DESCRIPTION: A 60-year-old male with a past medical history of hypothyroidism presented to the emergency department with a two-day history of worsening abdominal distention and pain associated with nausea and vomiting...
February 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28278257/inhibition-of-h3k9-methyltransferase-g9a-ameliorates-methylglyoxal-induced-peritoneal-fibrosis
#17
Kazuya Maeda, Shigehiro Doi, Ayumu Nakashima, Takuo Nagai, Taisuke Irifuku, Toshinori Ueno, Takao Masaki
Activity of H3K9 histone methyltransferase G9a is reportedly induced by transforming growth factor-β1 (TGF-β1) and plays an important role in the progression of cancer and fibrosis. In this study, we investigated whether inhibition of G9a-mediated H3K9 methylation attenuates peritoneal fibrosis in mice and human peritoneal mesothelial cells (HPMCs). Nonadherent cells of peritoneal dialysis (PD) patients were isolated from PD effluent to examine expression of G9a. Peritoneal fibrosis was induced by peritoneal injection of methylglyoxal (MGO) in male C57/B6 mice for 3 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28263453/tissue-response-to-five-commercially-available-peritoneal-adhesion-barriers-a-systematic-histological-evaluation
#18
Volker H Schmitt, Andreas Mamilos, Christine Schmitt, Constanze N E Neitzer-Planck, Taufiek K Rajab, David Hollemann, Willi Wagner, Bernhard Krämer, Helmut Hierlemann, C James Kirkpatrick, Christoph Brochhausen
Separating wounded serosa by physical barriers is the only clinically approved adjunct for postoperative adhesion prevention. Since the optimal adhesion barrier has not been found, it is essential to improve our pathogenic understanding of adhesion formation and to compare the effects of different barrier materials on tissue and cells. Wistar rats underwent standardized peritoneal damage and were treated either with Seprafilm, Adept, Intercoat, Spraygel, SupraSeal or remained untreated as a control. 14 days postoperatively, the lesions were explanted and histomorphologically analyzed using the European ISO score to evaluate material implants...
March 6, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28247603/-high-glucose-dialysate-enhances-peritoneal-fibrosis-through-upregulating-glucose-transporters-glut1-and-sglt1
#19
Mengqi Hong, Zhenyu Nie, Zhengyue Chen, Xiongwei Yu, Beiyan Bao
Objective: To investigate the role of glucose transporter 1 (GLUT1) and sodium-glucose cotransporter 1 (SGLT1) in high glucose dialysate-induced peritoneal fibrosis. Methods: Thirty six male SD rats were randomly divided into 6 groups (6 in each):normal control group, sham operation group, peritoneal dialysis group (PD group), PD+phloretin group (PD+T group), PD+phlorizin group (PD+Z group), PD+phloretin+phlorizin group (PD+T+Z group). Rat model of uraemia was established using 5/6 nephrotomy, and 2.5% dextrose peritoneal dialysis solution was used in peritoneal dialysis...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28238121/leukocyte-inos-is-required-for-inflammation-and-pathological-remodeling-in-ischemic-heart-failure
#20
Justin R Kingery, Tariq Hamid, Robert K Lewis, Mohamed Ameen Ismahil, Shyam S Bansal, Gregg Rokosh, Tim M Townes, Suzanne T Ildstad, Steven P Jones, Sumanth D Prabhu
In the failing heart, iNOS is expressed by both macrophages and cardiomyocytes. We hypothesized that inflammatory cell-localized iNOS exacerbates left ventricular (LV) remodeling. Wild-type (WT) C57BL/6 mice underwent total body irradiation and reconstitution with bone marrow from iNOS(-/-) mice (iNOS(-/-)c) or WT mice (WTc). Chimeric mice underwent coronary ligation to induce large infarction and ischemic heart failure (HF), or sham surgery. After 28 days, as compared with WTc sham mice, WTc HF mice exhibited significant (p < 0...
March 2017: Basic Research in Cardiology
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