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https://www.readbyqxmd.com/read/28740538/linarin-enriched-extract-attenuates-liver-injury-and-inflammation-induced-by-high-fat-high-cholesterol-diet-in-rats
#1
Zhen-Jie Zhuang, Chao-Wen Shan, Bo Li, Min-Xia Pang, Han Wang, Yan Luo, Yin-Lan Liu, Yu Song, Nan-Nan Wang, Su-Hong Chen, Jun-Ping Shi, Gui-Yuan Lv
The aim of this study was to explore the potential beneficial effects of linarin enriched Flos Chrysanthemi extract (Lin-extract) on nonalcoholic steatohepatitis (NASH) induced by high-fat high-cholesterol (HFHC) diet in rats. SD rats received normal diet, HFHC diet, or HFHC diet plus different doses of Lin-extract. The liver content of triglyceride and total cholesterol markedly increased in HFHC diet-fed model rats while middle and high dose of Lin-extract lowered liver cholesterol significantly. The expression of stearoyl-CoA desaturase (SCD1) was upregulated by HFHC diet and further elevated by high dose Lin-extract...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28737721/pyranopyran-1-8-dione-an-active-compound-from-vitices-fructus-attenuates-cigarette-smoke-induced-lung-inflammation-in-mice
#2
Gihyun Lee, Kyung-Hwa Jung, Eun Seok Ji, Hyunsu Bae
Previously, we isolated and identified pyranopyran-1,8-dione (PPY) from Viticis Fructus, as a bioactive compound possessing anti-inflammatory properties. The present study was aimed to evaluate the preventive benefit of PPY on cigarette-smoke (CS)-induced lung inflammation. C57BL/6 mice were exposed to CS for 2 weeks while PPY was administrated by oral injection 2 h before CS exposure. To validate the anti-inflammatory effects of PPY, the numbers of immune cells in the bronchoalveolar lavage fluid were counted...
July 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28724384/deficiency-of-pi3-kinase-catalytic-isoforms-p110%C3%AE-and-p110%C3%AE-in-mice-enhances-the-il-17-g-csf-axis-and-induces-neutrophilia
#3
Kirsten Bucher, Fee Schmitt, Benedikt Mothes, Carolin Blumendeller, Daniel Schäll, Roland Piekorz, Emilio Hirsch, Bernd Nürnberg, Sandra Beer-Hammer
BACKGROUND: Phosphoinositide 3-kinase γ (PI3Kγ) and PI3Kδ are second messenger-generating enzymes with key roles in proliferation, differentiation, survival, and function of leukocytes. Deficiency of the catalytic subunits p110γ and p110δ of PI3Kγ and PI3Kδ in p110γ/δ(-/-) mice leads to defective B- and T-cell homeostasis. Here we examined the role of p110γ and p110δ in the homeostasis of neutrophils by analyzing p110γ(-/-), p110δ(-/-) and p110γ/δ(-/-) mice. METHODS: Neutrophils and T cells in leukocyte suspensions from the bone marrow (BM), blood, spleen and lung were analyzed by flow cytometry...
July 19, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/28716864/alpha1-antitrypsin-binds-hemin-and-prevents-oxidative-activation-of-human-neutrophils-putative-pathophysiological-significance
#4
Sabina Janciauskiene, Srinu Tumpara, Malgorzata Wiese, Sabine Wrenger, Vijith Vijayan, Faikah Gueler, Rongjun Chen, Kukuh Madyaningrana, Ravi Mahadeva, Tobias Welte, Stephan Immenschuh, Joanna Chorostowska-Wynimko
Heme is a ubiquitous compound of human tissues, and it is involved in cellular physiology and metabolism. Once released from the cell, free heme oxidizes to the ferric state (hemin). High levels of hemin can cause oxidative stress and inflammation if not neutralized immediately by specialized scavenger proteins. Human alpha1-antitrypsin (A1AT), an acute-phase glycoprotein and important inhibitor of neutrophil proteases, is also a hemin-binding protein. A short-term exposure of freshly isolated human blood neutrophils to 4 µM hemin results in cell spreading, surface expression of filament protein, vimentin, free radical production, expression of heme oxygenase-1 (HO-1), release of IL-8, and enhanced neutrophil adhesion to human endothelial cells...
July 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28716525/peri-tumor-associated-fibroblasts-promote-intrahepatic-metastasis-of-hepatocellular-carcinoma-by-recruiting-cancer-stem-cells
#5
Jinghua Jiang, Fei Ye, Xue Yang, Chen Zong, Lu Gao, Yang Yang, Qiudong Zhao, Zhipeng Han, Lixin Wei
Fibroblasts have been reported to play an important role in hepatocellular carcinoma (HCC). However, the role of fibroblasts have not been fully understood. Conditioned medium collected from human peri-tumor tissue-derived fibroblasts (CM-pTAFs) showed high metastasis ability than human HCC tissues-derived fibroblasts (CM-TAFs). To determine what component was secreted from fibroblasts, we used Bio-Plex analysis system and compared the factors secreted from CM-pTAFs and CM-TAFs, found a series of up-regulated cytokines in the CM-pTAFs, including IL-6, CCL2, CXCL1, CXCL8, SCGF-β, HGF and VEGF...
July 15, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28714025/effect-of-ccl2-sirna-on-proliferation-and-apoptosis-in-the-u251-human-glioma-cell-line
#6
Bin Lu, Yue Zhou, Zhongzhou Su, Ai Yan, Peng Ding
Glioma is one of the most common types of tumor of the central nervous system. Increased expression of C‑C motif chemokine 2 (CCL2) has previously been observed in various types of cancer. The effect of CCL2 small interfering (si)RNA on the proliferation, angiogenesis and apoptosis of the glioma cell line U251 was investigated in the present study. Data on CCL2 expression in glioma and normal tissues were obtained from The Cancer Genome Atlas. A total of 30 patients with glioma were enrolled in the present study...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713993/gene-microarray-analysis-of-expression-profiles-in-liver-ischemia-and-reperfusion
#7
Xiaoyang Zheng, Huaqiang Zhou, Zeting Qiu, Shaowei Gao, Zhongxing Wang, Liangcan Xiao
Liver ischemia and reperfusion (I/R) injury is of primary concern in cases of liver disease worldwide and is associated with hemorrhagic shock, resection and transplantation. Numerous studies have previously been conducted to investigate the underlying mechanisms of liver I/R injury, however these have not yet been fully elucidated. To determine the difference between ischemia and reperfusion in signaling pathways and the relative pathological mechanisms, the present study downloaded microarray data GSE10657 from the Gene Expression Omnibus database...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713640/human-adipose-derived-mesenchymal-stem-cells-respond-to-short-term-hypoxia-by-secreting-factors-beneficial-for-human-islets-in-vitro-and-potentiate-antidiabetic-effect-in-vivo
#8
Simen W Schive, Mohammad Reza Mirlashari, Grete Hasvold, Mengyu Wang, Dag Josefsen, Hans Petter Gullestad, Olle Korsgren, Aksel Foss, Gunnar Kvalheim, Hanne Scholz
Adipose-derived mesenchymal stem cells (ASCs) release factors beneficial for islets in vitro and protect against hyperglycemia in rodent models of diabetes. Oxygen tension has been shown to induce metabolic changes and alter ASCs' release of soluble factors. The effects of hypoxia on the antidiabetic properties of ASCs have not been explored. To investigate this, we incubated human ASCs for 48 h in 21% (normoxia) or 1% O2 (hypoxia) and compared viability, cell growth, surface markers, differentiation capability, and soluble factors in the conditioned media (CM)...
2017: Cell Medicine
https://www.readbyqxmd.com/read/28712048/photobiomodulation-therapy-improves-both-inflammatory-and-fibrotic-parameters-in-experimental-model-of-lung-fibrosis-in-mice
#9
Robson Alexandre Brochetti, Mayara Peres Leal, Raíssa Rodrigues, Renata Kelly da Palma, Luis Vicente Franco de Oliveira, Anna Carolina Ratto Tempestini Horliana, Amílcar Sabino Damazo, Ana Paula Ligeiro de Oliveira, Rodolfo Paula Vieira, Adriana Lino-Dos-Santos-Franco
Lung fibrosis (LF) is a chronic and progressive lung disease characterized by pulmonary parenchyma progressive lesion, inflammatory infiltration, and interstitial fibrosis. It is developed by excessive collagen deposition and other cellular matrix components, resulting in severe changes in the alveolar architecture. Considering the absence of effective treatment, the aim of this study was to investigate the effect of photobiomodulation therapy (PBMT) on the development of PF. For this purpose, we used C57BL6 mice subjected to induction of LF by bleomycin administration (1...
July 16, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28710903/stellate-cells-orchestrate-concanavalin-a-induced-acute-liver-damage
#10
Richa Rani, Ashish Tandon, Jiang Wang, Sudhir Kumar, Chandrashekhar R Gandhi
Concanavalin A (ConA) causes immune cell-mediated liver damage, but the contribution of resident nonparenchymal cells is also evident. Hepatic stellate cells (HSCs) induce hepatic inflammation and immunological reactions; we therefore investigated their role in ConA-induced liver injury. ConA was administered i.v. to control or HSC-depleted mice; hepatic histopathology and cytokines/chemokines were determined after 6 hours. In vitro, the effects of ConA-conditioned HSC medium on hepatocytes were determined...
July 12, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28708839/tumor-necrosis-factor-dynamically-regulates-the-mrna-stabilome-in-rheumatoid-arthritis-fibroblast-like-synoviocytes
#11
Konstantinos Loupasakis, David Kuo, Upneet K Sokhi, Christopher Sohn, Bethany Syracuse, Eugenia G Giannopoulou, Sung Ho Park, Hyelim Kang, Gunnar Rätsch, Lionel B Ivashkiv, George D Kalliolias
During rheumatoid arthritis (RA), Tumor Necrosis Factor (TNF) activates fibroblast-like synoviocytes (FLS) inducing in a temporal order a constellation of genes, which perpetuate synovial inflammation. Although the molecular mechanisms regulating TNF-induced transcription are well characterized, little is known about the impact of mRNA stability on gene expression and the impact of TNF on decay rates of mRNA transcripts in FLS. To address these issues we performed RNA sequencing and genome-wide analysis of the mRNA stabilome in RA FLS...
2017: PloS One
https://www.readbyqxmd.com/read/28694696/th17-profile-in-copd-exacerbations
#12
REVIEW
Marco Antonio Ponce-Gallegos, Alejandra Ramírez-Venegas, Ramcés Falfán-Valencia
COPD is characterized by an ongoing inflammatory process of the airways that leads to obstruction or limitation of airflow. It is mainly associated with exposure to cigarette smoke. In addition, it is considered, at present, a serious public health problem, ranking fourth in mortality worldwide. Many cells participate in the pathophysiology of COPD, the most important are neutrophils, macrophages and CD4+ and CD8+ T cells. Neutrophil migration to the inflammation area could be mediated largely by cytokines related to CD4+ Th17 lymphocytes, because it has been shown that IL-17A, IL-17F and IL-22 act as inducers for CXCL8, CXCL1, CXCL5, G-CSF, and GM-CSF secretion by epithelial cells of the airways...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28681388/matrix-metalloproteinase-9-is-decreased-in-natalizumab-treated-multiple-sclerosis-patients-at-risk-for-progressive-multifocal-leukoencephalopathy
#13
Nicolas Fissolo, Béatrice Pignolet, Clara Matute-Blanch, Juan Carlos Triviño, Berta Miró, Miriam Mota, Santiago Perez-Hoyos, Alex Sanchez, Patrick Vermersch, Aurélie Ruet, Jérôme de Sèze, Pierre Labauge, Sandra Vukusic, Caroline Papeix, Laurent Almoyna, Ayman Tourbah, Pierre Clavelou, Thibault Moreau, Jean Pelletier, Christine Lebrun-Frenay, Xavier Montalban, David Brassat, Manuel Comabella
OBJECTIVE: To identify biomarkers associated with the development of progressive multifocal leukoencephalopathy (PML) in multiple sclerosis (MS) patients treated with natalizumab (NTZ). METHODS: Relapsing-remitting MS patients who developed PML under NTZ therapy (pre-PML) and non-PML NTZ-treated patients (NTZ-ctr) were included in the study. Cryopreserved peripheral blood mononuclear cells and serum samples collected at baseline, at 1- and 2-year treated time points, and during PML were analyzed for gene expression by RNA sequencing and for serum protein levels by Luminex and enzyme-linked immunosorbent assays, respectively...
July 6, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28679961/islet-inflammation-and-ductal-proliferation-may-be-linked-to-increased-pancreatitis-risk-in-type-2-diabetes
#14
Belinda Schludi, Abu Saleh Md Moin, Chiara Montemurro, Tatyana Gurlo, Aleksey V Matveyenko, David Kirakossian, David W Dawson, Sarah M Dry, Peter C Butler, Alexandra E Butler
Pancreatitis is more frequent in type 2 diabetes mellitus (T2DM), although the underlying cause is unknown. We tested the hypothesis that ongoing β cell stress and apoptosis in T2DM induces ductal tree proliferation, particularly the pancreatic duct gland (PDG) compartment, and thus potentially obstructs exocrine outflow, a well-established cause of pancreatitis. PDG replication was increased 2-fold in human pancreas from individuals with T2DM, and was associated with increased pancreatic intraepithelial neoplasia (PanIN), lesions associated with pancreatic inflammation and with the potential to obstruct pancreatic outflow...
July 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28674503/male-seminal-relaxin-contributes-to-induction-of-the-post-mating-cytokine-response-in-the-female-mouse-uterus
#15
Danielle J Glynn, Kee Heng, Darryl L Russell, David J Sharkey, Sarah A Robertson, Ravinder Anand-Ivell, Richard Ivell
The hormone relaxin is important in female reproduction for embryo implantation, cardiovascular function, and during labor and lactation. Relaxin is also synthesized in males by organs of the male tract. We hypothesized that relaxin might be one component of seminal plasma responsible for eliciting the female cytokine response induced in the uterus at mating. When recombinant relaxin was injected into the uterus of wild-type (Rln(+/+)) mice at estrus, it evoked the production of Cxcl1 mRNA and its secreted protein product CXCL1 in four of eight animals...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28672399/the-effect-of-a-p38-mitogen-activated-protein-kinase-inhibitor-on-cellular-senescence-of-cultivated-human-corneal-endothelial-cells
#16
Akane Hongo, Naoki Okumura, Makiko Nakahara, EunDuck P Kay, Noriko Koizumi
Purpose: We have begun a clinical trial of a cell-based therapy for corneal endothelial dysfunction in Japan. The purpose of this study was to investigate the usefulness of a p38 MAPK inhibitor for prevention cellular senescence in cultivated human corneal endothelial cells (HCECs). Methods: HCECs of 10 donor corneas were divided and cultured with or without SB203580 (a p38 MAPK inhibitor). Cell density and morphology were evaluated by phase-contrast microscopy...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28670393/chronic-intermittent-hypoxia-decreases-pulmonary-clearance-of-99m-tc-labelled-particulate-matter-in-mice
#17
Cuiping Fu, Huan Lu, Xu Wu, Jie Liu, Chengying Liu, Zilong Liu, Wei Yuan, Jian Zhou, Shanqun Li
BACKGROUND: Obstructive sleep apnea-hypopnea syndrome (OSAHS) could cause systematic inflammation including pulmonary inflammatory response, whereas the influence of OSAHS in pulmonary clearance ability remains unknown. The main pathophysiological feature of OSAHS is chronic intermittent hypoxia (CIH). The goal of this study is to clarify the airway clearance of particulate matter (PM) in CIH mice, and to explore the potential mechanism. METHODS: Balb/c mice were divided into a CIH group and a control group, exposed to intermittent hypoxia and air chamber, respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28666365/chronic-low-dose-cadmium-exposure-impairs-cutaneous-wound-healing-with-defective-early-inflammatory-responses-after-skin-injury
#18
Hong Mei, Pengle Yao, Shanshan Wang, Na Li, Tengfei Zhu, Xiaofang Chen, Mengmei Yang, Shu Zhuo, Shiting Chen, Ji Ming Wang, Hui Wang, Dong Xie, Yongning Wu, Yingying Le
Impairment of the immune system is a developing concern in evaluating the toxicity of Cadmium (Cd). In the present study, we investigated if Cd could impair cutaneous wound healing through interfering with inflammation after injury. We found that exposure of mice to CdCl2 through drinking water at doses of 10, 30 and 50 mg/L for 8 weeks significantly impaired cutaneous wound healing. Chronic 30 mg/L CdCl2 treatment elevated murine blood Cd level comparable to that of low dose Cd-exposed humans, had no effect on blood total and differential leukocyte counts, but reduced neutrophil infiltration, chemokines (CXCL1, CXCL2) and proinflammatory cytokines (TNFα, IL-1β, and IL-6) expression in wounded tissue at early stage after injury...
June 29, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28665939/the-rna-uridyltransferase-zcchc6-is-expressed-in-macrophages-and-impacts-innate-immune-responses
#19
Elyse Kozlowski, Gregory A Wasserman, Marcos Morgan, Dónal O'Carroll, Nora-Guadalupe P Ramirez, Suryaram Gummuluru, Jasmine Y Rah, Adam C Gower, Michael Ieong, Lee J Quinton, Joseph P Mizgerd, Matthew R Jones
Alveolar macrophages orchestrate pulmonary innate immunity and are essential for early immune surveillance and clearance of microorganisms in the airways. Inflammatory signaling must be sufficiently robust to promote host defense but limited enough to prevent excessive tissue injury. Macrophages in the lungs utilize multiple transcriptional and post-transcriptional mechanisms of inflammatory gene expression to delicately balance the elaboration of immune mediators. RNA terminal uridyltransferases (TUTs), including the closely homologous family members Zcchc6 (TUT7) and Zcchc11 (TUT4), have been implicated in the post-transcriptional regulation of inflammation from studies conducted in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28662055/downregulation-of-adaptor-protein-myd88-compromises-the-angiogenic-potential-of-b16-murine-melanoma
#20
Lucas Daniel Trucco, Emiliano Roselli, Paula Araya, Nicolás Gonzalo Nuñez, Hebe Agustina Mena, José Luis Bocco, Soledad Negrotto, Mariana Maccioni
The mechanisms that link inflammatory responses to cancer development remain a subject of intense investigation, emphasizing the need to better understand the cellular and molecular pathways that create a tumor promoting microenvironment. The myeloid differentiation primary response protein MyD88 acts as a main adaptor molecule for the signaling cascades initiated from Toll-like receptors (TLRs) and the interleukin 1 receptor (IL-1R). MyD88 has been shown to contribute to tumorigenesis in many inflammation-associated cancer models...
2017: PloS One
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