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https://www.readbyqxmd.com/read/29792034/soft-hydrogel-zwitterionic-coatings-minimize-fibroblast-and-macrophage-adhesion-on-polyimide-substrates
#1
Dusana Trelova, Alice Rita Salgarella, Leonardo Ricotti, Guido Giudetti, Annarita Cutrone, Petra Sramkova, Anna Zahoranova, Dusan Chorvat, Daniel Hasko, Claudio Canale, Silvestro Micera, Juraj Kronek, Arianna Menciassi, Igor Lacik
Minimizing the foreign body reaction to polyimide-based implanted devices has a pivotal role for several biomedical applications. In this work we propose materials exhibiting non-biofouling properties and a Young's modulus reflecting the one of soft human tissues. We describe the synthesis, characterization and in vitro validation of poly(carboxybetaine) hydrogel coatings covalently attached to polyimide substrates via a photolabile 4-azidophenyl group, incorporated in poly(carboxybetaine) chains at two concentrations of 1...
May 24, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29791904/the-cgas-sting-pathway-is-important-for-dendritic-cell-activation-but-is-not-essential-to-induce-protective-immunity-against-mycobacterium-tuberculosis-infection
#2
Fabio V Marinho, Sulayman Benmerzoug, Stephanie Rose, Priscila C Campos, João T Marques, André Báfica, Glen Barber, Bernhard Ryffel, Sergio C Oliveira, Valerie F J Quesniaux
Mycobacterium tuberculosis (Mtb) infection remains a major public health concern. The STING (stimulator of interferon genes) pathway contributes to the cytosolic surveillance of host cells. Most studies on the role of STING activation in Mtb infection have focused on macrophages. Moreover, a detailed investigation of the role of STING during Mtb infection in vivo is required. Here, we deciphered the involvement of STING in the activation of dendritic cells (DCs) and the host response to Mtb infection in vivo...
May 23, 2018: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29790395/hyaluronic-acid-conjugated-ph-sensitive-liposomes-for-targeted-delivery-of-prednisolone-on-rheumatoid-arthritis-therapy
#3
Virgínia M Gouveia, José Lopes-de-Araújo, Sofia A Costa Lima, Cláudia Nunes, Salette Reis
AIM: The treatment of rheumatoid arthritis remains a challenge as available therapies still entail the risk of deleterious off-target effects. The present study describes hyaluronic acid-conjugated pH-sensitive liposomes as an effective drug delivery-targeting strategy to synovial cells. MATERIALS & METHODS: Therapeutic, cytotoxic and targeting potential of developed liposomes were studied in vitro using macrophages and fibroblasts cell lines. RESULTS & CONCLUSION: Results suggest an enhanced cellular uptake of conjugated liposomes, mainly mediated by caveolae- and clathrin-dependent endocytosis...
May 2018: Nanomedicine
https://www.readbyqxmd.com/read/29785785/metabolism-within-the-tumor-microenvironment-and-its-implication-on-cancer-progression-an-ongoing-therapeutic-target
#4
REVIEW
Ma Carmen Ocaña, Beatriz Martínez-Poveda, Ana R Quesada, Miguel Ángel Medina
Since reprogramming energy metabolism is considered a new hallmark of cancer, tumor metabolism is again in the spotlight of cancer research. Many studies have been carried out and many possible therapies have been developed in the last years. However, tumor cells are not alone. A series of extracellular components and stromal cells, such as endothelial cells, cancer-associated fibroblasts, tumor-associated macrophages, and tumor-infiltrating T cells, surround tumor cells in the so-called tumor microenvironment (TME)...
May 22, 2018: Medicinal Research Reviews
https://www.readbyqxmd.com/read/29785109/development-and-characterization-of-a-nanoemulsion-containing-propranolol-for-topical-delivery
#5
Tatiana Zanela da Silva Marques, Ralph Santos-Oliveira, Luciana Betzler de Oliveira de Siqueira, Verônica da Silva Cardoso, Zaida Maria Faria de Freitas, Rita de Cássia da Silva Ascenção Barros, Ana Lúcia Vazquez Villa, Mariana Sato de Souza de Bustamante Monteiro, Elisabete Pereira Dos Santos, Eduardo Ricci-Junior
Background: Propranolol (PPN) is a therapeutic option for the treatment of infantile hemangiomas. This study aimed at the development of nanoemulsion (NE) containing 1% PPN, characterization of the system, and safety studies based on ex vivo permeation, cytotoxicity, and biodistribution in vivo. Methods: The formulation was developed and characterized in relation to the droplet size, polydispersity index (PDI), pH, zeta potential, and electronic microscopy. Ex vivo permeation studies were used to evaluate the cutaneous retention of PPN in the epidermis and dermis...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29777109/tak1-mediates-microenvironment-triggered-autocrine-signals-and-promotes-triple-negative-breast-cancer-lung-metastasis
#6
Oihana Iriondo, Yarong Liu, Grace Lee, Mostafa Elhodaky, Christian Jimenez, Lin Li, Julie Lang, Pin Wang, Min Yu
Triple-negative breast cancer (TNBC) is a highly metastatic subtype of breast cancer that has limited therapeutic options. Thus, developing novel treatments for metastatic TNBC is an urgent need. Here, we show that nanoparticle-mediated delivery of transforming growth factor-β1-activated kinase-1 (TAK1) inhibitor 5Z-7-Oxozeaenol can inhibit TNBC lung metastasis in most animals tested. P38 is a central signal downstream of TAK1 in TNBC cells in TAK1-mediated response to multiple cytokines. Following co-culturing with macrophages or fibroblasts, TNBC cells express interleukin-1 (IL1) or tumor necrosis factor-α (TNFα), respectively...
May 18, 2018: Nature Communications
https://www.readbyqxmd.com/read/29776755/neutral-ph-and-low-glucose-degradation-product-dialysis-fluids-induce-major-early-alterations-of-the-peritoneal-membrane-in-children-on-peritoneal-dialysis
#7
Betti Schaefer, Maria Bartosova, Stephan Macher-Goeppinger, Peter Sallay, Peter Vörös, Bruno Ranchin, Karel Vondrak, Gema Ariceta, Ariane Zaloszyc, Aysun K Bayazit, Uwe Querfeld, Rimante Cerkauskiene, Sara Testa, Christina Taylan, Johan VandeWalle, YokChin Yap, Rafael T Krmar, Rainer Büscher, Anne K Mühlig, Dorota Drozdz, Salim Caliskan, Felix Lasitschka, Sahar Fathallah-Shaykh, Enrico Verrina, Günter Klaus, Klaus Arbeiter, Raj Bhayadia, Anette Melk, Philipp Romero, Bradley A Warady, Franz Schaefer, Akos Ujszaszi, Claus Peter Schmitt
The effect of peritoneal dialysates with low-glucose degradation products on peritoneal membrane morphology is largely unknown, with functional relevancy predominantly derived from experimental studies. To investigate this, we performed automated quantitative histomorphometry and molecular analyses on 256 standardized peritoneal and 172 omental specimens from 56 children with normal renal function, 90 children with end-stage kidney disease at time of catheter insertion, and 82 children undergoing peritoneal dialysis using dialysates with low-glucose degradation products...
May 15, 2018: Kidney International
https://www.readbyqxmd.com/read/29773427/microphthalmia-associated-transcription-factor-mitf-promiscuous-staining-patterns-in-fibrohistiocytic-lesions-is-a-potential-pitfall
#8
Sambit K Mohanty, Shivani Sharma, Dinesh Pradhan, Shivani R Kandukuri, Navid Farahani, Catherine Barry, Julie M Wu, David Frishberg, Bonnie Balzer
Microphthalmia-associated transcription factor (MiTF) is used as a marker of melanocytic differentiation. However, MiTF immunoexpression has also been observed in histiocytes, macrophages, smooth muscle cells and fibroblasts, which raise the concern of fibrohistiocytic (FH) lesions being misdiagnosed as melanoma based on MiTF immunoreactivity. MiTF has been known to be positive in FH tumors, but this is the first study evaluating ninety-three fibrohistiocytic neoplasms to understand and delineate the staining pattern of MiTF in these tumors...
May 11, 2018: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29772718/ectromelia-virus-affects-mitochondrial-network-morphology-distribution-and-physiology-in-murine-fibroblasts-and-macrophage-cell-line
#9
Karolina P Gregorczyk, Zbigniew Wyżewski, Joanna Szczepanowska, Felix N Toka, Matylda B Mielcarska, Magdalena Bossowska-Nowicka, Małgorzata Gieryńska, Anna Boratyńska-Jasińska, Justyna Struzik, Marek G Niemiałtowski, Lidia Szulc-Dąbrowska
Mitochondria are multifunctional organelles that participate in numerous processes in response to viral infection, but they are also a target for viruses. The aim of this study was to define subcellular events leading to alterations in mitochondrial morphology and function during infection with ectromelia virus (ECTV). We used two different cell lines and a combination of immunofluorescence techniques, confocal and electron microscopy, and flow cytometry to address subcellular changes following infection. Early in infection of L929 fibroblasts and RAW 264...
May 16, 2018: Viruses
https://www.readbyqxmd.com/read/29771006/the-anti-fibrotic-effect-of-adenosine-a2b-receptor-antagonism-in-a-mouse-model-of-dermal-fibrosis
#10
Harry Karmouty-Quintana, Jose G Molina, Kemly Philip, Chiara Bellocchi, Brent Gudenkauf, Minghua Wu, Ning-Yuan Chen, Scott D Collum, Junsuk Ko, Sandeep K Agarwal, Shervin Assassi, Hongyan Zhong, Michael R Blackburn, Tingting Weng
OBJECTIVE: Systemic sclerosis (SSc - scleroderma) is a chronic disease that affects the skin and various internal organs. Dermal fibrosis is a major component of this disease. The mechanisms that promote dermal fibrosis remain elusive. Elevations in tissue adenosine levels and the subsequent engagement of the pro-fibrotic A2B adenosine receptor (ADORA2B) have been shown to regulate fibrosis in multiple organs including the lung, kidney and penis; however, the role of the ADORA2B in dermal fibrosis has not been investigated...
May 17, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29770194/clinical-utility-of-hyperbaric-oxygen-therapy-in-genitourinary-medicine
#11
REVIEW
Jason Gandhi, Omar Seyam, Noel L Smith, Gunjan Joshi, Sohrab Vatsia, Sardar Ali Khan
Hyperbaric oxygen therapy (HBOT) is a medical technique which delivers oxygen at ambient pressures to increase the amount of dissolved oxygen in the blood and oxygen distribution to tissues. There are several beneficial properties of HBOT concomitant with elevated oxygen distribution in tissue including anti-inflammation, angiogenesis through vascular endothelial growth factor proliferation, augmented fibroblast activity through fibroblast growth factor proliferation, tissue and wound repair, enhancement of lymphocyte and macrophage activity, increased male testosterone secretion, and bactericidal activity...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29769337/entry-of-herpes-simplex-virus-1-into-epidermis-and-dermal-fibroblasts-is-independent-of-the-scavenger-receptor-marco
#12
Katharina Thier, Maureen Möckel, Katja Palitzsch, Katinka Döhner, Beate Sodeik, Dagmar Knebel-Mörsdorf
To enter host cells, herpes simplex virus 1 (HSV-1) initially attaches to cell surface glycosaminoglycans followed by requisite binding to one of several cellular receptors leading to viral internalization. Although virus-receptor interactions have been studied in various cell lines, the contributions of individual receptors to uptake into target tissues such as mucosa, skin or cornea are not well understood. We demonstrated that nectin-1 acts as major receptor for HSV-1 entry into murine epidermis, while HVEM can serve as alternative receptor...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29764866/lrrc15-is-a-novel-mesenchymal-protein-and-stromal-target-for-antibody-drug-conjugates
#13
James W Purcell, Sonia G Tanlimco, Jonathan A Hickson, Melvin Fox, Mien Sho, Lisa Durkin, Tamar Uziel, Rick Powers, Kelly D Foster-Duke, Thomas McGonigal, Subashri Kumar, Josue Samayoa, Dong Zhang, Joann P Palma, Sasmita Mishra, Diane Hollenbaugh, Kurt Gish, Susan E Morgan-Lappe, Eric D Hsi, Debra T Chao
Progress in understanding tumor stromal biology has been constrained in part because cancer-associated fibroblasts (CAF) are a heterogeneous population with limited cell type-specific protein markers. Using RNA expression profiling, we identified the membrane protein leucine rich repeat containing 15 (LRRC15) as highly expressed in multiple solid tumor indications with limited normal tissue expression. LRRC15 was expressed on stromal fibroblasts in many solid tumors (e.g., breast, head and neck, lung, pancreatic) as well as directly on a subset of cancer cells of mesenchymal origin (e...
May 15, 2018: Cancer Research
https://www.readbyqxmd.com/read/29759005/ido-expressing-fibroblasts-suppress-the-development-of-imiquimod-induced-psoriasis-like-dermatitis
#14
Sanam Salimi Elizei, Mohammadreza Pakyari, Mehraneh Ghoreishi, Ruhangiz Kilani, Sanaz Mahmoudi, Aziz Ghahary
Psoriasis is a chronic skin condition whose pathogenesis is reported to be due to the activation of the interleukin-23/interleukin-17 (IL-23/IL-17) pathway. Here, we report that indoleamine 2,3-dioxygenase (IDO)-expressing fibroblasts reduce the activity of this pathway in activated immune cells. The findings showed that intralesional injection of IDO-expressing fibroblasts in imiquimod-induced psoriasis-like dermatitis on the back and ear (Pso. ear group) in mice significantly improves the clinical lesional appearance by reducing the number of skin-infiltrated IL-17+ CD4+ T cells (1...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29750999/modeling-triple-negative-breast-cancer-heterogeneity-effects-of-stromal-macrophages-fibroblasts-and-tumor-vasculature
#15
Kerri-Ann Norton, Kideok Jin, Aleksander S Popel
A hallmark of breast tumors is its spatial heterogeneity that includes its distribution of cancer stem cells and progenitor cells, but also heterogeneity in the tumor microenvironment. In this study we focus on the contributions of stromal cells, specifically macrophages, fibroblasts, and endothelial cells on tumor progression. We develop a computational model of triple-negative breast cancer based on our previous work and expand it to include macrophage infiltration, fibroblasts, and angiogenesis. In vitro studies have shown that the secretomes of tumor-educated macrophages and fibroblasts increase both the migration and proliferation rates of triple-negative breast cancer cells...
May 8, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29749461/upregulation-of-allograft-inflammatory-factor%C3%A2-1-expression-and-secretion-by-macrophages-stimulated-with-aldosterone-promotes-renal-fibroblasts-to-a-profibrotic-phenotype
#16
Yushu Li, Xingzhi Wang, Lei Zhang, Xueying Yuan, Jianbing Hao, Jie Ni, Lirong Hao
Macrophages have been identified as a key cell type in the pathogenesis of renal interstitial fibrosis (RIF). However, the mechanism through which macrophages drive fibrosis remains unclear. The current study focuses on the effects and possible underlying mechanism of allograft inflammatory factor‑1 (AIF‑1), an inflammation‑responsive scaffold protein expressed and secreted by macrophages, in promoting fibroblasts to a profibrotic phenotype. In vivo experiments indicated that AIF‑1, CD68 and α‑smooth muscle actin (α‑SMA) were upregulated in kidney tissues of mice subjected to unilateral ureteric obstruction, while their expressions were inhibited by an aldosterone receptor antagonist, spironolactone...
May 10, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29747461/role-of-the-bone-microenvironment-in-the-development-of-painful-complications-of-skeletal-metastases
#17
REVIEW
Sun H Park, Matthew R Eber, D Brooke Widner, Yusuke Shiozawa
Cancer-induced bone pain (CIBP) is the most common and painful complication in patients with bone metastases. It causes a significant reduction in patient quality of life. Available analgesic treatments for CIBP, such as opioids that target the central nervous system, come with severe side effects as well as the risk of abuse and addiction. Therefore, alternative treatments for CIBP are desperately needed. Although the exact mechanisms of CIBP have not been fully elucidated, recent studies using preclinical models have demonstrated the role of the bone marrow microenvironment (e...
May 10, 2018: Cancers
https://www.readbyqxmd.com/read/29742434/live-imaging-of-hiv-1-transfer-across-t-cell-virological-synapse-to-epithelial-cells-that-promotes-stromal-macrophage-infection
#18
Fernando Real, Alexis Sennepin, Yonatan Ganor, Alain Schmitt, Morgane Bomsel
During sexual intercourse, HIV-1 crosses epithelial barriers composing the genital mucosa, a poorly understood feature that requires an HIV-1-infected cell vectoring efficient mucosal HIV-1 entry. Therefore, urethral mucosa comprising a polarized epithelium and a stroma composed of fibroblasts and macrophages were reconstructed in vitro. Using this system, we demonstrate by live imaging that efficient HIV-1 transmission to stromal macrophages depends on cell-mediated transfer of the virus through virological synapses formed between HIV-1-infected CD4+ T cells and the epithelial cell mucosal surface...
May 8, 2018: Cell Reports
https://www.readbyqxmd.com/read/29739904/cd147-promotes-entry-of-pentamer-expressing-human-cytomegalovirus-into-epithelial-and-endothelial-cells
#19
Adam L Vanarsdall, Sarah R Pritchard, Todd W Wisner, Jing Liu, Ted S Jardetzky, David C Johnson
Human cytomegalovirus (HCMV) replicates in many diverse cell types in vivo , and entry into different cells involves distinct entry mechanisms and different envelope glycoproteins. HCMV glycoprotein gB is thought to act as the virus fusogen, apparently after being triggered by different gH/gL proteins that bind distinct cellular receptors or entry mediators. A trimer of gH/gL/gO is required for entry into all cell types, and entry into fibroblasts involves trimer binding to platelet-derived growth factor receptor alpha (PDGFRα)...
May 8, 2018: MBio
https://www.readbyqxmd.com/read/29737246/role-of-ox-ldl-and-lox-1-in-atherogenesis
#20
Ajoe John Kattoor, Sri Harsha Kanuri, Jawahar L Mehta
Oxidized LDL (ox-LDL) plays a central role in atherosclerosis by acting on multiple cells such as endothelial cells, macrophages, platelets, fibroblasts and smooth muscle cells through LOX-1. LOX-1 is a 50 kDa transmembrane glycoprotein that serves as receptor for ox-LDL, modified lipoproteins, activated platelets and advance glycation end-products. Ox-LDL through LOX-1, in endothelial cells, cause increase in leukocyte adhesion molecules, activates pathways of apoptosis, increase reactive oxygen species and cause endothelial dysfunction...
May 7, 2018: Current Medicinal Chemistry
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