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https://www.readbyqxmd.com/read/28221249/the-%C3%AE-4%C3%AE-1-homing-pathway-is-essential-for-ileal-homing-of-crohn-s-disease-effector-t-cells-in-vivo
#1
Sebastian Zundler, Anika Fischer, Daniela Schillinger, Marie-Theres Binder, Raja Atreya, Timo Rath, Rocío Lopez-Pósadas, Caroline J Voskens, Alastair Watson, Imke Atreya, Clemens Neufert, Markus F Neurath
BACKGROUND: The precise mechanisms controlling homing of T effector (Teff) cells to the inflamed gut in Crohn's disease (CD) are still unclear, and clinical outcome data from patients with inflammatory bowel disease treated with the anti-α4β7 integrin antibody vedolizumab suggest differences between ulcerative colitis and CD. METHODS: Expression of homing molecules was studied with flow cytometry and immunohistochemistry. Their functional role was investigated in in vitro adhesion assays and in a humanized mouse model of T cell homing to the inflamed gut in vivo...
March 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28214884/transient-receptor-potential-melastatin-4-trpm4-contributes-to-high-salt-diet-mediated-early-stage-endothelial-injury
#2
Xiao-Qing Ding, Tao Ban, Zeng-Yan Liu, Jie Lou, Liang-Liang Tang, Jia-Xin Wang, Wen-Feng Chu, Dan Zhao, Bin-Lin Song, Zhi-Ren Zhang
BACKGROUND/AIMS: The present study investigated whether the transient receptor potential melastatin 4 (TRPM4) channel plays a role in high salt diet (HSD)-induced endothelial injuries. METHODS: Western blotting and immunofluorescence were used to examine TRPM4 expression in the mesenteric endothelium of Dahl salt-sensitive (SS) rats fed a HSD. The MTT, TUNEL, and transwell assays were used to evaluate the cell viability, cell apoptosis, and cell migration, respectively, of human umbilical vein endothelial cells (HUVECs)...
February 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214208/reduced-immunohistochemical-expression-of-adhesion-molecules-in-vitiligo-skin-biopsies
#3
Adriane Reichert Faria, Juliana Elizabeth Jung, Caio César Silva de Castro, Lucia de Noronha
Because defects in adhesion impairment seem to be involved in the etiopathogenesis of vitiligo, this study aimed to compare the immunohistochemical expression of several adhesion molecules in the epidermis of vitiligo and non lesional vitiligo skin. Sixty-six specimens of lesional and non lesional skin from 33 volunteers with vitiligo were evaluated by immunohistochemistry using anti-beta-catenin, anti-E-cadherin, anti-laminin, anti-beta1 integrin, anti-collagen IV, anti-ICAM-1 and anti-VCAM-1 antibodies. Biopsies of vitiligo skin demonstrated a significant reduction in the expression of laminin and integrin...
December 30, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28209985/ig-like-domain-6-of-vcam-1-is-a-potential-therapeutic-target-in-tnf%C3%AE-induced-angiogenesis
#4
Taek-Keun Kim, Chang Sik Park, Hee-Jun Na, Kangseung Lee, Aerin Yoon, Junho Chung, Sukmook Lee
Tumor necrosis factor alpha (TNFα)-induced angiogenesis plays important roles in the progression of various diseases, including cancer, wet age-related macular degeneration, and rheumatoid arthritis. However, the relevance and role of vascular cell adhesion molecule-1 (VCAM-1) in angiogenesis have not yet been clearly elucidated. In this study, VCAM-1 knockdown shows VCAM-1 involvement in TNFα-induced angiogenesis. Through competitive blocking experiments with VCAM-1 Ig-like domain 6 (VCAM-1-D6) protein, we identified VCAM-1-D6 as a key domain regulating TNFα-induced vascular tube formation...
February 17, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28208647/soy-leaf-extract-exerts-atheroprotective-effects-via-modulation-of-kr%C3%A3-ppel-like-factor-2-and-adhesion-molecules
#5
Jong-Min Han, Hua Li, Moon-Hee Cho, Seung-Hwa Baek, Chul-Ho Lee, Ho-Yong Park, Tae-Sook Jeong
Soy-leaf extracts exert their cardioprotective effects by inducing endothelium-dependent vasodilation in the arteries, and they favorably modulate the serum lipid profile. In this study, we investigated the atheroprotective effects of an ethanol extract of soy leaf (ESL) in human umbilical vein endothelial cells (HUVECs) and high-cholesterol diet (HCD)-fed low-density lipoprotein receptor deficient (LDLR-/-) mice. ESL induced the expression of Krüppel-like factor 2 (KLF2), an endothelial transcription factor, and endothelial nitric oxide synthase (eNOS), and suppressed the expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) through moderate inflammatory signal activation, not only in tumor necrosis factor-α (TNF-α)-stimulated HUVECs but also in 7-ketocholesterol (7-KC)-stimulated HUVECs...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28207427/progression-and-characterization-of-the-accelerated-atherosclerosis-in-iliac-artery-of-new-zealand-white-rabbits-effect-of-simvastatin
#6
Jitendra S Kanshana, Vivek Khanna, Vishal Singh, Manish Jain, Ankita Misra, Sachin Kumar, Mariya Farooqui, Manoj K Barthwal, Madhu Dikshit
OBJECTIVE: Although atherosclerosis is described in New Zealand White rabbit's iliac artery, yet details of time-dependent atherosclerosis progression are not well known. Further, a well characterized accelerated model of atherosclerosis is also required for the screening of candidate drugs to target specific steps of atherosclerosis development. The present study extensively characterizes the time-dependent plaque composition and functional responses of the atherosclerosis in rabbit iliac artery and its modification by simvastatin...
February 14, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28202840/soluble-vascular-cell-adhesion-molecules-may-be-protective-of-future-cardiovascular-disease-risk-findings-from-the-prevend-prospective-cohort-study
#7
Setor K Kunutsor, Stephan J L Bakker, Robin P F Dullaart
AIM: Soluble cell adhesion molecules, such as vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1, E-selectin, and P-selectin, have been suggested to be associated with cardiovascular disease (CVD) risk; however, the nature and magnitude of the association between VCAM-1 and CVD risk is uncertain. We aimed to assess the association of VCAM-1 with CVD risk and determine its potential utility for CVD risk prediction. METHODS: VCAM-1 concentrations were measured at baseline in the PREVEND prospective study of 2,638 participants...
February 16, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28202417/triptolide-attenuates-pressure-overload-induced-myocardial-remodeling-in-mice-via-the-inhibition-of-nlrp3-inflammasome-expression
#8
Rujun Li, Kuiying Lu, Yao Wang, Mingxing Chen, Fengyu Zhang, Hui Shen, Deshan Yao, Kaizheng Gong, Zhengang Zhang
Triptolide is the predominant active component of the Chinese herb Tripterygium wilfordii Hook F (TwHF) that has been widely used to treat several chronic inflammatory diseases due to its immunosuppressive, anti-inflammatory, and anti-proliferative properties. In the present study, we elucidated the cardioprotective effects of triptolide against cardiac dysfunction and myocardial remodeling in chronic pressure-overloaded hearts. Furthermore, the potential mechanisms of triptolide were investigated. For this purpose, C57/BL6 mice were anesthetized and subjected to transverse aortic constriction (TAC) or sham operation...
February 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28183821/exercise-induced-upregulation-of-endothelial-adhesion-molecules-in-human-skeletal-muscle-and-number-of-circulating-cells-with-remodeling-properties
#9
Anna Strömberg, Eric Rullman, Eva Jansson, Thomas Gustafsson
Multipotent cells have received great interest due to their potential capacity to repair and remodel peripheral tissues. We examined the effect of an acute exercise bout on the number of circulating cells with known remodeling properties, and the level of factors in plasma and skeletal muscle tissue with potential to recruit these cells. Twenty healthy male subjects performed a 60 min cycling exercise. Blood samples for flow cytometry were drawn from 10 subjects (Group 1) before and up to 2 h after exercise, and absolute cell counts of the classical (CD14(++)CD16(-)), intermediate (CD14(++)CD16(+)), and nonclassical (CD14(+)CD16(++)) monocyte (MO) subpopulations, and of CD45(dim)CD34(+)VEGFR2(+) endothelial progenitor cells (EPCs) were measured using bead-based determination...
February 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28178689/malignant-ascites-derived-exosomes-promote-proliferation-and-induce-carcinoma-associated-fibroblasts-transition-in-peritoneal-mesothelial-cells
#10
Mingtian Wei, Tinghan Yang, Xiangzheng Chen, Yangping Wu, Xiangbing Deng, Wanbin He, Jinliang Yang, Ziqiang Wang
Malignant ascites-derived exosomes have been demonstrated to participate in tumor metastasis. In peritoneal metastasis, normal mesothelial cells (MCs) can be converted into carcinoma-associated fibroblasts (CAFs) by mesothelial-mesenchymal transition (MMT). Herein, we evaluated the effect of malignant ascites-derived exosomes on peritoneal MCs in vitro and in vivo experiments to determine whether exosomes could educate MCs and contribute to peritoneal metastasis.Under the treatment of ascites-derived exosomes, peritoneal MCs showed increased ability to proliferate and migrate...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28177698/influence-of-alpha-lipoic-acid-on-nicotine-induced-lung-and-liver-damage-in-experimental-rats
#11
Hayam Ateyya, Manar Nader, Ghalia Attia, Nagla Ahmad El-Sherbeeny
Nicotine mediates some of the injurious effects caused by consuming tobacco products. This work aimed at investigating the defensive role of alpha-lipoic acid (ALA) with its known antioxidant and anti-inflammatory effect in nicotine -induced lung and liver damage. Rats were arranged into four groups, a control, nicotine, ALA group and ALA-nicotine groups. Oxidative stress and antioxidant status were determined by assessing thiobarbituric acid reactive substances (TBARs), superoxide dismutase (SOD) and glutathione (GSH) levels in lung and liver...
October 12, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28176762/systemic-serum-amyloid-a-as-a-biomarker-for-exposure-to-zinc-and-or-copper-containing-metal-fumes
#12
R Baumann, M Gube, A Markert, S Davatgarbenam, V Kossack, B Gerhards, T Kraus, P Brand
Zinc- and copper-containing welding fumes increase systemic C-reactive protein (CRP). The aim of this study was to investigate the performance of the biomarkers serum amyloid A (SAA) and soluble vascular cell adhesion molecule-1 (VCAM-1) in this regard. Fifteen male subjects were exposed under controlled conditions to welding fumes containing either zinc, or copper, or copper and zinc for 6 h. Plasma samples were collected before, 6 and 24 h after start of exposure and biomarkers therein were measured by electrochemiluminescent assay...
February 8, 2017: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/28176248/interleukin-18-induced-cell-adhesion-molecule-expression-is-associated-with-feedback-regulation-by-ppar-%C3%AE-and-nf-%C3%AE%C2%BAb-in-apo-e-mice
#13
Owais Mohammad Bhat, P Uday Kumar, N Harishankar, L Ravichandaran, A Bhatia, Veena Dhawan
Focal recruitment of monocytes and lymphocytes is one of the earliest detectable cellular responses in atherosclerotic lesion formation. Endothelium may regulate leukocyte recruitment by expressing specific adhesion molecules. Interleukin-18 is a proinflammatory cytokine that plays an important role in vascular pathologies. The present study highlights the modulation of adhesion molecules and PPAR-γ by IL-18 and proposes a novel feedback mechanism by which PPAR-γ may regulate IL-18 expression. Three groups of normal chow diet-fed, male Apo E-/- mice, aged 12 weeks (n = 6/group) were employed: Gp I, phosphate-buffered saline (PBS) (2 mo): Gp II, recombinant IL-18 (rIL-18) (1 mo) followed by PBS (1 mo); Gp III, rIL-18 (1 mo) followed by pyrrolidine dithiocarbamate (PDTC) (1 mo)...
February 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28172543/p257-evaluation-of-serum-icam-1-and-vcam-1-as-biomarkers-for-disease-progression-in-crohn-s-disease
#14
I Bar Orr, J Martin de Carpi, J Amil Dias, A Levine, F Nuti, P Lionetti, J Escher
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28167758/microrna-10a-is-crucial-for-endothelial-response-to-different-flow-patterns-via-interaction-of-retinoid-acid-receptors-and-histone-deacetylases
#15
Ding-Yu Lee, Ting-Er Lin, Chih-I Lee, Jing Zhou, Yi-Hsuan Huang, Pei-Ling Lee, Yu-Tsung Shih, Shu Chien, Jeng-Jiann Chiu
Histone deacetylases (HDACs) and microRNAs (miRs) have emerged as two important epigenetic factors in the regulation of vascular physiology. This study aimed to elucidate the relationship between HDACs and miRs in the hemodynamic modulation of endothelial cell (EC) dysfunction. We found that miR-10a has the lowest expression among all examined shear-responsive miRs in ECs under oscillatory shear stress (OS), and a relatively high expression under pulsatile shear stress (PS). PS and OS alter EC miR-10a expression to regulate the expression of its direct target GATA6 and downstream vascular cell adhesion molecule (VCAM)-1...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28167274/characterization-of-human-leukocyte-huvec-adhesion-effect-of-cell-preparation-methods
#16
Franca Marino, Laura Schembri, Emanuela Rasini, Monica Pinoli, Angela Scanzano, Alessandra Luini, Terenzio Congiu, Marco Cosentino
OBJECTIVE: Sample manipulation to obtain isolated granulocytes represents a key, and often necessary, step in the in vitro studies. We investigated by the means of flow cytometry and microscopic techniques (both optical microscopy [OM] and scanning electron microscopy [SEM]), the granulocyte-endothelium adhesion and the role of sample manipulation. METHODS: By means of a co-culture method, we have analysed the adhesion of human leukocytes, originated from two different blood samples (fresh venous blood [FB] and buffy coat [BC]), to the human umbilical venous endothelial cell (HUVEC) monolayer...
February 3, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28164654/expression-of-platelet-collagen-receptor-glycoprotein-vi-in-coronary-heart-disease-interaction-between-platelets-and-endothelial-cells
#17
Jian Shi, Ning Zhu, Jiwen Wang, Yu Wang, Zhaohong Geng, Suya Gao, Zhongyan Li
BACKGROUND: 1) To investigate the expression of platelet collagen receptor glycoprotein VI (GPVI) on the surface of platelets in patients with coronary heart disease (CHD). 2) To investigate the expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) on the surface of endothelial cells after exposure to subjects' platelets. METHODS: Platelets were extracted from blood samples of 97 subjects including 43 with acute coronary syndrome (ACS), 21 with stable angina pectoris (SAP), and 33 serving as controls in which CHD was excluded...
July 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28163724/kindlin-2-modulates-the-survival-differentiation-and-migration-of-induced-pluripotent-cell-derived-mesenchymal-stromal-cells
#18
Mohsen Moslem, Reto Eggenschwiler, Christian Wichmann, Raymund Buhmann, Tobias Cantz, Reinhard Henschler
Kindlin-2 is a multidomain intracellular protein that can be recruited to β-integrin domains to activate signaling, initiate transcriptional programs, and bind to E-cadherin. To explore its involvement in cell fate decisions in mesenchymal cells, we studied the effects of Kindlin-2 modification (overexpression/knockdown) in induced pluripotent cell-derived mesenchymal stromal cells (iPSC-MSCs). Kindlin-2 overexpression resulted in increased proliferation and reduced apoptosis of iPSC-MSCs, as well as inhibition of their differentiation towards osteocytes, adipocytes, and chondrocytes...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28161804/tryptophan-depletion-under-conditions-that-imitate-insulin-resistance-enhances-fatty-acid-oxidation-and-induces-endothelial-dysfunction-through-reactive-oxygen-species-dependent-and-independent-pathways
#19
Theodoros Eleftheriadis, Georgios Pissas, Maria Sounidaki, Georgia Antoniadi, Christos Rountas, Vassilios Liakopoulos, Loannis Stefanidis
In atherosclerosis-associated pathologic entities characterized by malnutrition and inflammation, L-tryptophan (TRP) levels are low. Insulin resistance is an independent cardiovascular risk factor and induces endothelial dysfunction by increasing fatty acid oxidation. It is also associated with inflammation and low TRP levels. Low TRP levels have been related to worse cardiovascular outcome. This study evaluated the effect of TRP depletion on endothelial dysfunction under conditions that imitate insulin resistance...
February 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28161429/mzd7349-peptide-conjugated-plga-nanoparticles-directed-against-vcam-1-for-targeted-delivery-of-simvastatin-to-restore-dysfunctional-huvecs
#20
Fatemeh Imanparast, Mohammad Ali Faramarzi, Akram Vatannejad, Maliheh Paknejad, Behnas Deiham, Farzad Kobarfard, Amir Amani, Mahmood Doosti
Endothelial dysfunction is initial and critical step of atherosclerosis. Impaired bioavailability of endothelial nitric oxide synthase (eNOS) is one of the main reasons of endothelial dysfunction. Improving bioavailability of eNOS by increasing its expression or activity using statins is an effective therapeutic strategy in restoring endothelial dysfunction. In this study, simvastatin (SIM) as a poorly water-soluble drug was loaded in poly (lactic-co-glycolic acid) (PLGA) nanoparticles (SIM-PLGA-NPs). NPs were then conjugated with mZD7349 peptide (mZD7349-SIM-PLGA-NPs) and directed against vascular cell adhesion molecule 1 (VCAM-1)...
February 2, 2017: Microvascular Research
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