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https://www.readbyqxmd.com/read/28650342/inflammatory-ly6chi-monocytes-and-their-conversion-to-m2-macrophages-drive-atherosclerosis-regression
#1
Karishma Rahman, Yuliya Vengrenyuk, Stephen A Ramsey, Noemi Rotllan Vila, Natasha M Girgis, Jianhua Liu, Viktoria Gusarova, Jesper Gromada, Ada Weinstock, Kathryn J Moore, P'ng Loke, Edward A Fisher
Atherosclerosis is a chronic inflammatory disease, and developing therapies to promote its regression is an important clinical goal. We previously established that atherosclerosis regression is characterized by an overall decrease in plaque macrophages and enrichment in markers of alternatively activated M2 macrophages. We have now investigated the origin and functional requirement for M2 macrophages in regression in normolipidemic mice that received transplants of atherosclerotic aortic segments. We compared plaque regression in WT normolipidemic recipients and those deficient in chemokine receptors necessary to recruit inflammatory Ly6Chi (Ccr2-/- or Cx3cr1-/-) or patrolling Ly6Clo (Ccr5-/-) monocytes...
June 26, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28645138/correction-tumor-growth-suppressive-effect-of-il-4-through-p21-mediated-activation-of-stat6-in-il-4r%C3%AE-overexpressed-melanoma-models
#2
Hye Lim Lee, Mi Hee Park, Ju Kyoung Song, Yu Yeon Jung, Youngsoo Kim, Kyung Bo Kim, Dae Yeon Hwang, Do Young Yoon, Min Jong Song, Sang Bae Han, Jin Tae Hong
No abstract text is available yet for this article.
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644098/intracranial-solitary-fibrous-tumors-hemangiopericytomas-first-report-of-malignant-progression
#3
Caroline Apra, Karima Mokhtari, Philippe Cornu, Matthieu Peyre, Michel Kalamarides
OBJECTIVE Meningeal solitary fibrous tumors/hemangiopericytomas (MSFTs/HPCs) are rare intracranial tumors resembling meningiomas. Their classification was redefined in 2016 by the World Health Organization (WHO) as benign Grade I fibrohyaline type, intermediate Grade II hypercellular type, and malignant highly mitotic Grade III. This grouping is based on common histological features and identification of a common NAB2-STAT6 fusion. METHODS The authors retrospectively identified 49 cases of MSFT/HPC. Clinical data were obtained from the medical records, and all cases were analyzed according to this new 2016 WHO grading classification in order to identify malignant transformations...
June 23, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28639284/soft-tissue-angiofibroma-clinicopathologic-immunohistochemical-and-molecular-analysis-of-14-cases
#4
Elise M Bekers, Patricia Jta Groenen, Marian Aj Verdijk, Winny L Raaijmakers-van Geloof, Paul Roepman, Robert Vink, Nathalie D B Gilhuijs, Joost M van Gorp, Judith Vmg Bovée, David H Creytens, Adrienne M Flanagan, Albert Jh Suurmeijer, Thomas Mentzel, Elsa Arbajian, Uta Flucke
Soft tissue angiofibroma is rare and has characteristic histomorphological and genetic features. For diagnostic purposes, there are no specific antibodies available. Fourteen lesions (6 females, 8 males; age range 7 - 67 years) of the lower extremities (12) and trunk (2) were investigated by immunohistochemistry, including for the first time NCOA2. NCOA2 was also tested in a control group of other spindle cell lesions. The known fusion-genes (AHRR-NCOA2 and GTF2I-NCOA2) were examined using RT-PCR in order to evaluate their diagnostic value...
June 22, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28629743/association-study-of-childhood-food-allergy-with-gwas-discovered-loci-of-atopic-dermatitis-and-eosinophilic-esophagitis
#5
Tomomitsu Hirota, Tsuguhisa Nakayama, Sakura Sato, Noriyuki Yanagida, Teruaki Matsui, Shiro Sugiura, Yuri Takaoka, Nobuyuki Hizawa, Shigeharu Fujieda, Akihiko Miyatake, Takashi Sasaki, Masayuki Amagai, Satoru Doi, Komei Ito, Motohiro Ebisawa, Mayumi Tamari
We found associations between FA and 14 GWAS-identified loci of AD and EoE: C11orf30/LRRC32, TMEM232/SLC25A46, TNFRSF6B/ZGPAT, OVOL1, KIF3A/IL13, GLB1, CCDC80, ZNF365, OR10A3/NLRP10, IL2/IL21, CLEC16A/DEXI, ZNF652, TSLP/WDR36 and STAT6. These findings improve our understanding of the complex heterogeneity of FA.
June 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28615615/stat6-upregulation-promotes-m2-macrophage-polarization-to-suppress-atherosclerosis
#6
Min Gong, Xiaozhen Zhuo, Aiqun Ma
BACKGROUND Macrophages are highly heterogeneous and plastic cells that are involved in all stages of atherogenesis. They can undergo polarization by shifting between M1 and M2 functional phenotypes. However, the role of macrophage polarization and the molecular mechanism in modulating atherosclerotic plaque stability remain incompletely understood. Our study investigated the role of STAT6 in regulating macrophage phenotypes to affect atherosclerotic plaque stability. MATERIAL AND METHODS A murine atherosclerosis model with vulnerable plaques was induced with high-cholesterol diet and PCCP surgeries in ApoE-/- mice...
June 15, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28614212/phosphaturic-mesenchymal-tumors-clinicopathologic-immunohistochemical-and-molecular-analysis-of-22-cases-expanding-their-morphologic-and-immunophenotypic-spectrum
#7
Abbas Agaimy, Michael Michal, Simion Chiosea, Fredrik Petersson, Ladislav Hadravsky, Glenn Kristiansen, Raymund E Horch, Jan Schmolders, Arndt Hartmann, Florian Haller, Michal Michal
Phosphaturic mesenchymal tumor (PMT) is a rare neoplasm of uncertain histogenesis that has been linked to tumor-induced osteomalacia (TIO) since 1959. The neoplastic cells produce increased amount of FGF23 which results in TIO via uncontrolled renal loss of phosphate (phosphaturia), and consequently diminished bone mineralization. To date, ∼300 cases have been reported. Although there is increasing evidence that PMT can be diagnosed by reproducible histopathologic features, firm diagnosis has been often restricted to cases associated with TIO and, hence, diagnosis of "nonphosphaturic variants" remained challenging...
June 13, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28600950/histamine-promotes-the-differentiation-of-macrophages-from-cd11b-myeloid-cells-and-formation-of-foam-cells-through-a-stat6-dependent-pathway
#8
Lili Xu, Dengfeng Cheng, Zheyong Huang, Suling Ding, Weiwei Zhang, Hui Tan, Hongcheng Shi, Ruizhen Chen, Yunzeng Zou, Timothy C Wang, Xiangdong Yang, Junbo Ge
BACKGROUND AND AIMS: The enzyme histidine decarboxylase (Hdc), which generates histamine, is highly expressed in CD11b(+)Gr-1(+) myeloid cells that play a critical role in infection, inflammation and tumorigenesis. The aim of this study was to explore the role of Hdc-expressing CD11b(+) myeloid cells or histamine in atherogenesis. METHODS: Hdc-EGFP bacterial artificial chromosome (BAC) transgenic reporter mice (Hdc-EGFP) were used to track Hdc expression during the development of atherosclerosis...
May 23, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28587956/activated-natural-killer-cells-mediate-the-suppressive-effect-of-interleukin-4-on-tumor-development-via-stat6-activation-in-an-atopic-condition-melanoma-model
#9
Dong Ju Son, Yu Yeon Jung, Mi Hee Park, Hye Lim Lee, Min Ji Song, Hwan-Soo Yoo, Dae Youn Hwang, Sang Bae Han, Jin Tae Hong
A protective effect of allergy for cancer has been suggested, but the results are somewhat conflicting, and the mechanism remains elusive. Interleukin-4 (IL-4) signaling has been identified as a potentially important pathway in the development of allergies and the suppression of cancer development. To evaluate the allergy responses in IL-4-mediated tumor development, we compared the growth of B16F10 melanoma cells in 4% phthalic anhydride (PA)-treated IL-4/Luc/CNS-1 transgenic mice (IL-4 mice) and acetone-olive oil (AOO)-treated IL-4 mice as a control for 3 weeks...
June 3, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28581443/neuropeptide-ff-increases-m2-activation-and-self-renewal-of-adipose-tissue-macrophages
#10
Syed F Hassnain Waqas, Anh Cuong Hoang, Ya-Tin Lin, Grace Ampem, Hind Azegrouz, Lajos Balogh, Julianna Thuróczy, Jin-Chung Chen, Ivan C Gerling, Sorim Nam, Jong-Seok Lim, Juncal Martinez-Ibañez, José T Real, Stephan Paschke, Raphaëlle Quillet, Safia Ayachi, Frédéric Simonin, E Marion Schneider, Jacqueline A Brinkman, Dudley W Lamming, Christine M Seroogy, Tamás Röszer
The quantity and activation state of adipose tissue macrophages (ATMs) impact the development of obesity-induced metabolic diseases. Appetite-controlling hormones play key roles in obesity; however, our understanding of their effects on ATMs is limited. Here, we have shown that human and mouse ATMs express NPFFR2, a receptor for the appetite-reducing neuropeptide FF (NPFF), and that NPFFR2 expression is upregulated by IL-4, an M2-polarizing cytokine. Plasma levels of NPFF decreased in obese patients and high-fat diet-fed mice and increased following caloric restriction...
June 5, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28553931/the-immunosuppressive-cytokine-interleukin-4-increases-the-clonogenic-potential-of-prostate-stem-like-cells-by-activation-of-stat6-signalling
#11
G Nappo, F Handle, F R Santer, R V McNeill, R I Seed, A T Collins, G Morrone, Z Culig, N J Maitland, H H H Erb
Interleukin-4 plays a critical role in the regulation of immune responses and has been detected at high levels in the tumour microenvironment of cancer patients, where concentrations correlate with the grade of malignancy. In prostate cancer, interleukin-4 has been associated with activation of the androgen receptor, increased proliferation and activation of survival pathways such as Akt and NF-κB. However, its role in therapy resistance has not yet been determined. Here we investigate the influence of interleukin-4 on primary epithelial cells from prostate cancer patients...
May 29, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28552537/comparison-and-evaluation-of-risk-factors-for-meningeal-pleural-and-extrapleural-solitary-fibrous-tumors-a-clinicopathological-study-of-92-cases-confirmed-by-stat6-immunohistochemical-staining
#12
Ji Min Kim, Yoon-La Choi, Yu Jin Kim, Hyung Kyu Park
Solitary fibrous tumors (SFTs) are an uncommon type of mesenchymal tumors that are presumably fibroblastic in nature. SFTs are translocation-associated neoplasms that can be consistently diagnosed through the evaluation of NAB2/STAT6 gene fusion. Currently, SFTs have a different grading system and criteria according to their primary sites, and the differences and similarities in SFTs according to their primary sites are still poorly understood. Therefore, we compared SFTs according to their primary sites and histologic appearance, and validated the current grading system of SFTs...
June 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28551649/rare-neoplasm-mimicking-neuoroendocrine-pancreatic-tumor-a-case-report-of-solitary-fibrous-tumor-with-review-of-the-literature
#13
Francesco E D'Amico, Cesare Ruffolo, Maurizio Romano, Marina DI Domenico, Marta Sbaraglia, Angelo P Dei Tos, Tiziana Garofalo, Antonio Giordano, Iccolò Bassi, Marco Massani
BACKGROUND: Solitary fibrous tumors (SFTs) are rare biological entities described mainly in the pleura. To date, in the pancreas, only 14 cases have been reported in the English literature. CASE REPORT: A 52-year-old male was diagnosed incidentally with a suspected neuroendocrine tumor (NET) of the pancreas. He underwent pancreatic enucleation of the mass, which, at final pathology, showed spindle cell proliferation set in a collagenous background and featuring the presence of hemangiopericytoma-like blood...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28536310/the-prognostic-values-of-signal-transducers-activators-of-transcription-family-in-ovarian-cancer
#14
Saisai Li, Bo Sheng, Menghuang Zhao, Qi Shen, Haiyan Zhu, Xueqiong Zhu
Signal transducers activators of transcription (STATs), a family of latent cytoplasmic transcription factors, are composed of seven identified members (STAT1, STAT2, STAT3, STAT4, STAT5a, STAT5b, STAT6). STATs are associated with several biological processes such as cell proliferation, invasion and metastasis in various cancer types. In addition, STATs family have been well studied as a prognostic predictor for a considerable number of solid tumors. However, the prognostic value of STATs family in ovarian cancer patients remains unclear...
May 23, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28525794/stat6-silencing-induces-hepatocellular-carcinoma-derived-cell-apoptosis-and-growth-inhibition-by-decreasing-the-rankl-expression
#15
Tian Qing, Zhang Yamin, Wang Guijie, Jin Yan, Shen Zhongyang
Signal transducer and activator of transcription-6 (STAT6) is highly expressed in various human cancers and considered a regulator of multiple biological processes in cancers, including cell apoptosis. Evidence has indicated that STAT6 predicts a worse prognosis in hepatocellular carcinoma (HCC) patients. The objective of this study was to investigate the effects and mechanism of STAT6 in human HCC cells. We found that STAT6 silencing significantly inhibited HepG2 and Hep3B cell survival and proliferation. We observed that depletion of STAT6 increased HepG2 and Hep3B cell apoptosis by using a histone DNA ELISA detection kit...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28510715/quantitative-specificity-of-stat1-and-several-variants
#16
Basab Roy, Zheng Zuo, Gary D Stormo
The quantitative specificity of the STAT1 transcription factor was determined by measuring the relative affinity to hundreds of variants of the consensus binding site including variations in the length of the site. The known consensus sequence is observed to have the highest affinity, with all variants decreasing binding affinity considerably. There is very little loss of binding affinity when the CpG within the consensus binding site is methylated. Additionally, the specificity of mutant proteins, with variants of amino acids that interact with the DNA, was determined and nearly all of them are observed to lose specificity across the entire binding site...
May 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28510479/increased-expression-of-p22phox-mediates-airway-hyperresponsiveness-in-an-experimental-model-of-asthma
#17
Chandran Nagaraj, Hans Michael Haitchi, Akos Heinemann, Peter H Howarth, Andrea Olschewski, Leigh M Marsh
AIM: Chronic airway diseases such as asthma are associated with increased production of reactive oxygen species (ROS) and oxidative stress. Endogenous NADPH oxidases are a major source of superoxide in lung, but their underlying role in asthma pathology is poorly understood. We sought to characterize the involvement of NADPH oxidase in allergic asthma by studying the role of CYBA (p22phox) in human asthma and murine house dust mite (HDM)-induced allergic airway inflammation. RESULTS: Increased expression and localization of p22-PHOX were observed in biopsies of asthmatic patients...
June 26, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28498822/interleukin-4-and-interleukin-13-increase-nadph-oxidase-1-related-proliferation-of-human-colon-cancer-cells
#18
Han Liu, Smitha Antony, Krishnendu Roy, Agnes Juhasz, Yongzhong Wu, Jiamo Lu, Jennifer L Meitzler, Guojian Jiang, Eric Polley, James H Doroshow
Human colon cancers express higher levels of NADPH oxidase 1 [NOX1] than adjacent normal epithelium. It has been suggested that reactive oxygen species [ROS] derived from NOX1 contribute to DNA damage and neoplastic transformation in the colon, particularly during chronic inflammatory stress. However, the mechanism(s) underlying increased NOX1 expression in malignant tumors or chronic inflammatory states involving the intestine are poorly characterized. We examined the effects of two pro-inflammatory cytokines, IL-4 and IL-13, on the regulation of NOX1...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28494796/a-malignant-solitary-fibrous-tumour-arising-from-the-first-lumbar-vertebra-and-mimicking-an-osteosarcoma-a-case-report
#19
Naoki Oike, Hiroyuki Kawashima, Akira Ogose, Tetsuo Hotta, Toru Hirano, Takashi Ariizumi, Tetsuro Yamagishi, Hajime Umezu, Shoichi Inagawa, Naoto Endo
BACKGROUND: A solitary fibrous tumour (SFT) is an unusual neoplasm typically found in soft tissues. Although SFTs can arise in the bones, they very rarely arise in the vertebral arch. Here, we describe a case of a SFT that arose in the vertebral arch of the first lumbar (L1) spinal vertebrae and mimicked osteosarcoma. CASE PRESENTATION: A 49-year-old woman presented with a 2-month history of lower back pain and a lumbar region mass. Magnetic resonance imaging demonstrated a heterogeneously enhanced mass in the L1 vertebral arch...
May 11, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28490634/inflammatory-cytokines-down-regulate-the-barrier-protective-prostasin-matriptase-proteolytic-cascade-early-in-experimental-colitis
#20
Marguerite S Buzza, Tierra A Johnson, Gregory D Conway, Erik W Martin, Subhradip Mukhopadhyay, Terez Shea-Donohue, Toni M Antalis
Compromised gastrointestinal barrier function is strongly associated with the progressive and destructive pathologies of the two main forms of IBD, Ulcerative Colitis (UC) and Crohns disease (CD). Matriptase is a membrane-anchored serine protease encoded by Suppression of Tumorigenicity-14 (ST14) gene, which is critical for epithelial barrier development and homeostasis. Matriptase barrier protective activity is linked with the glycosyl-phosphatidyl-inositol (GPI)-anchored serine protease prostasin, which is a co-factor for matriptase zymogen activation...
May 10, 2017: Journal of Biological Chemistry
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