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https://www.readbyqxmd.com/read/27906181/stat6-deficiency-ameliorates-graves-disease-severity-by-suppressing-thyroid-epithelial-cell-hyperplasia
#1
Xuechao Jiang, Bingbing Zha, Xiaoming Liu, Ronghua Liu, Jun Liu, Enyu Huang, Tingting Qian, Jiajing Liu, Zhiming Wang, Dan Zhang, Luman Wang, Yiwei Chu
Signal transducer and activator of transcription 6 (STAT6) is involved in epithelial cell growth. However, little is known regarding the STAT6 phosphorylation status in Graves' disease (GD) and its role in thyroid epithelial cells (TECs). In this study, we found that STAT6 phosphorylation (p-STAT6) was significantly increased in TECs from both GD patients and experimental autoimmune Graves' disease mice and that STAT6 deficiency ameliorated GD symptoms. Autocrine IL-4 signalling in TECs activated the phosphorylation of STAT6 via IL-4 R engagement, and the downstream targets of STAT6 were Bcl-xL and cyclin D1...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27906180/mir-148a-3p-represses-proliferation-and-emt-by-establishing-regulatory-circuits-between-erbb3-akt2-c-myc-and-dnmt1-in-bladder-cancer
#2
Xiao Wang, Zhen Liang, Xin Xu, Jiangfeng Li, Yi Zhu, Shuai Meng, Shiqi Li, Song Wang, Bo Xie, Alin Ji, Ben Liu, Xiangyi Zheng, Liping Xie
miR-148a-3p downregulation has emerged as a critical factor in cancer progression yet, the underlying mechanisms of miR-148a-3p expression pattern and its function in bladder cancer remains to be elucidated. Here, we illustrate that miR-148a-3p is frequently downregulated in bladder cancer and that its expression may be regulated by DNA methylation. DNA methyltransferase 1 (DNMT1) and miR-148a-3p function in a positive feedback loop in bladder cancer. miR-148a-3p overexpression functions as a tumor suppressor in bladder cancer cells...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27906137/in-vitro-toxicity-of-carbon-nanotube-polylysine-colloids-to-colon-cancer-cells
#3
Alejandro Ansón-Casaos, Laura Grasa, Desirée Pereboom, José Emilio Mesonero, Alvaro Casanova, María Divina Murillo, María Teresa Martínez
Single-walled carbon nanotubes (SWCNTs) are thoroughly purified and dispersed in an aqueous solution of high molecular weight poly-L-lysine (pLlys). Human intestinal epithelial Caco-2/TC7 cells are incubated with the SWCNT dispersions in pLlys, and their effects on cell viability are studied by image flow cytometry. No significant changes are observed in the cell culture wells up to pLlys concentrations of 10 μg ml(-1). However, high mortality is detected at pLlys concentrations of 100 μg ml(-1). The presence of oxygen-free SWCNTs does not modify the effects of pLlys on cell cultures at any of the tested concentrations (≤1 μg ml(-1))...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27906136/rapid-synthesis-of-silver-nanoparticles-by-pseudomonas-stutzeri-isolated-from-textile-soil-under-optimised-conditions-and-evaluation-of-their-antimicrobial-and-cytotoxicity-properties
#4
Nishant Rajora, Sanket Kaushik, Anupam Jyoti, Shanker L Kothari
Present study utilised textile soil isolated bacterium Pseudomonas stutzeri to synthesise extracellular silver nanoparticles (AgNPs) under optimised conditions. The synthesised AgNPs were characterised using ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). Optimisation showed AgNPs synthesis within 8 h using 2mM Ag nitrate at pH9, temperature 80°C and maximum absorbance toward 400 nm. TEM analysis revealed spherical shape AgNPs and reduction in size upto 8 nm was observed under optimised conditions...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27906099/p311-induces-the-transdifferentiation-of-epidermal-stem-cells-to-myofibroblast-like-cells-by-stimulating-transforming-growth-factor-%C3%AE-1-expression
#5
Haisheng Li, Zhihui Yao, Weifeng He, Hongyan Gao, Yang Bai, Sisi Yang, Lu Zhang, Rixing Zhan, Jianglin Tan, Junyi Zhou, Masao Takata, Jun Wu, Gaoxing Luo
BACKGROUND: Epithelial to mesenchymal transition, especially to myofibroblasts, plays an important role in wound healing, fibrosis, and carcinogenesis. Epidermal stem cells (EpSCs) are responsible for epidermal renewal and wound re-epithelialization. However, it remains unclear whether and how EpSCs transdifferentiate into myofibroblasts or myofibroblast-like cells (MFLCs). Here, we provide the first evidence showing that P311 induces EpSC to MFLC transdifferentiation (EpMyT) via TGFβ1/Smad signaling...
December 1, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27906073/gut-barrier-structure-mucosal-immunity-and-intestinal-microbiota-in-the-pathogenesis-and-treatment-of-hiv-infection
#6
REVIEW
Camilla Tincati, Daniel C Douek, Giulia Marchetti
Over the past 10 years, extensive work has been carried out in the field of microbial translocation in HIV infection, ranging from studies on its clinical significance to investigations on its pathogenic features. In the present work, we review the most recent findings on this phenomenon, focusing on the predictive role of microbial translocation in HIV-related morbidity and mortality, the mechanisms by which it arises and potential therapeutic approaches. From a clinical perspective, current work has shown that markers of microbial translocation may be useful in predicting clinical events in untreated HIV infection, while conflicting data exist on their role in cART-experienced subjects, possibly due to the inclusion of extremely varied patient populations in cohort studies...
April 11, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906054/is-radical-surgery-of-an-inverted-papilloma-of-the-maxillary-sinus-obsolete-a-case-report
#7
Vedat Yildirim, Niels Christian Pausch, Dirk Halama, Heinz-Theo Lübbers, Ayhan Yildirim
BACKGROUND: Sinonasal inverted papilloma is a locally aggressive tumor arising from the Schneiderian membrane which lines the nasal cavity and paranasal sinuses. Aggressive surgical approaches, such as lateral rhinotomy, were used until recently for complete removal of the inverted papilloma. Currently, endoscopic resection is the gold standard in the treatment of inverted papilloma. However, there are situations that justify an open approach. For example there are studies that report a higher postoperative recurrence rate after endonasal endoscopic resection, particularly in the treatment of recurrent diseases...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27906031/contrasting-biological-potency-of-particulate-matter-collected-at-sites-impacted-by-distinct-industrial-sources
#8
Errol M Thomson, Dalibor Breznan, Subramanian Karthikeyan, Christine MacKinnon-Roy, Ngoc Q Vuong, Ewa Dabek-Zlotorzynska, Valbona Celo, Jean-Pierre Charland, Prem Kumarathasan, Jeffrey R Brook, Renaud Vincent
BACKGROUND: Industrial sources contribute a significant proportion of anthropogenic particulate matter (PM) emissions, producing particles of varying composition that may differentially impact health. This study investigated the in vitro toxicity of ambient PM collected near industrial sites in relation to particle size and composition. METHODS: Size-fractionated particles (ultrafine, PM0.1-2.5, PM2.5-10, PM>10) were collected in the vicinity of steel, copper, aluminium, and petrochemical industrial sites...
December 1, 2016: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/27905569/shikonin-induces-mitochondria-mediated-apoptosis-and-enhances-chemotherapeutic-sensitivity-of-gastric-cancer-through-reactive-oxygen-species
#9
Wenquan Liang, Aizhen Cai, Guozhu Chen, Hongqing Xi, Xiaosong Wu, Jianxin Cui, Kecheng Zhang, Xudong Zhao, Jiyun Yu, Bo Wei, Lin Chen
The prognosis of gastric cancer remains poor due to clinical drug resistance. Novel drugs are urgently needed. Shikonin (SHK), a natural naphthoquinone, has been reported to trigger cell death and overcome drug resistance in anti-tumour therapy. In this study, we investigated the effectiveness and molecular mechanisms of SHK in treatment with gastric cancer. In vitro, SHK suppresses proliferation and triggers cell death of gastric cancer cells but leads minor damage to gastric epithelial cells. SHK induces the generation of intracellular reactive oxygen species (ROS), depolarizes the mitochondrial membrane potential (MMP) and ultimately triggers mitochondria-mediated apoptosis...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905399/cellular-reactions-to-long-term-volatile-organic-compound-voc-exposures
#10
Johanna M Gostner, Johannes Zeisler, Mohammad Tauqeer Alam, Peter Gruber, Dietmar Fuchs, Kathrin Becker, Kerstin Neubert, Markus Kleinhappl, Stefan Martini, Florian Überall
Investigations of cellular processes initiated by volatile organic compounds (VOCs) are limited when modelling realistic long-term exposure scenarios at low concentrations. Exposure to indoor VOCs is associated with a range of adverse effects, but data on molecular changes at regulatory threshold limits are lacking. Activity analysis of VOC in vitro can be a valuable complement to inhalation toxicological evaluations. We developed an exposure platform that generates a stable VOC atmosphere and allows the exposure of cells for longer periods...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905295/desensitization-of-idiopathic-pulmonary-fibrosis-fibroblasts-to-alternaria-alternata-extract-mediated-necrotic-cell-death
#11
Jintaek Im, Kyutae Kim, Ji Young Yhee, Scott M O'Grady, Richard S Nho
Alternaria alternata is an allergenic fungus and known to cause an upper respiratory tract infection and asthma in humans with compromised immunity. Although A. alternata's effect on airway epithelial cells has previously been examined, the potential role of A. alternata on lung fibroblast viability is not understood. Since lung fibroblasts derived from patients with idiopathic pulmonary fibrosis (IPF) display a distinct phenotype that is resistant to stress and cell death inducing conditions, the investigation of the role of Alternaria on pathological IPF fibroblasts provides a better understanding of the fibrotic process induced by an allergenic fungus...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27905172/recommendations-for-pathologic-staging-ptnm-of-cancer-of-the-esophagus-and-esophagogastric-junction-for-the-8th-edition-ajcc-uicc-staging-manuals
#12
T W Rice, H Ishwaran, W L Hofstetter, D P Kelsen, C Apperson-Hansen, E H Blackstone
We report analytic and consensus processes that produced recommendations for pathologic stage groups (pTNM) of esophageal and esophagogastric junction cancer for the AJCC/UICC cancer staging manuals, 8th edition. The Worldwide Esophageal Cancer Collaboration provided data for 22,654 patients with epithelial esophageal cancers; 13,300 without preoperative therapy had pathologic assessment after esophagectomy or endoscopic treatment. Risk-adjusted survival for each patient was developed using random survival forest analysis to identify data-driven pathologic stage groups wherein survival decreased monotonically with increasing group, was distinctive between groups, and homogeneous within groups...
November 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27905171/recommendations-for-clinical-staging-ctnm-of-cancer-of-the-esophagus-and-esophagogastric-junction-for-the-8th-edition-ajcc-uicc-staging-manuals
#13
Thomas W Rice, Hemant Ishwaran, Eugene H Blackstone, Wayne L Hofstetter, David P Kelsen, Carolyn Apperson-Hansen
We report analytic and consensus processes that produced recommendations for clinical stage groups (cTNM) of esophageal and esophagogastric junction cancer for the AJCC/UICC cancer staging manuals, 8th edition. The Worldwide Esophageal Cancer Collaboration (WECC) provided data on 22,123 clinically staged patients with epithelial esophageal cancers. Risk-adjusted survival for each patient was developed using random survival forest analysis from which (1) data-driven clinical stage groups were identified wherein survival decreased monotonically and was distinctive between and homogeneous within groups and (2) data-driven anatomic clinical stage groups based only on cTNM...
November 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27905170/recommendations-for-neoadjuvant-pathologic-staging-yptnm-of-cancer-of-the-esophagus-and-esophagogastric-junction-for-the-8th-edition-ajcc-uicc-staging-manuals
#14
Thomas W Rice, Hemant Ishwaran, David P Kelsen, Wayne L Hofstetter, Carolyn Apperson-Hansen, Eugene H Blackstone
We report analytic and consensus processes that produced recommendations for neoadjuvant pathologic stage groups (ypTNM) of esophageal and esophagogastric junction cancer for the AJCC/UICC cancer staging manuals, 8th edition. The Worldwide Esophageal Cancer Collaboration provided data for 22,654 patients with epithelial esophageal cancers; 7,773 had pathologic assessment after neoadjuvant therapy. Risk-adjusted survival for each patient was developed. Random forest analysis identified data-driven neoadjuvant pathologic stage groups wherein survival decreased monotonically with increasing group, was distinctive between groups, and homogeneous within groups...
November 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27905089/novel-paradigm-for-immunotherapy-of-ovarian-cancer-by-engaging-prophylactic-immunity-against-hepatitis-b-virus
#15
Marek Malecki, Emily Putzer, Caroline Quach, Chaitanya Dodivenaka, Xenia Tombokan
BACKGROUND: Only eight women out of one hundred diagnosed with ovarian epithelial cancers, which progressed to the clinical stage IV, survive 10 years. First line therapies: surgery, chemotherapy, and radiation therapy inflict very serious iatrogenic consequences. Passive immunotherapy of ovarian cancers offers only low efficacy. Prophylactic and therapeutic vaccines for ovarian cancers are not available. Interestingly, prophylactic vaccines for Hepatitis B Viruses (HBV) are very effective...
December 2016: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/27905066/a-multiscale-approach-to-the-migration-of-cancer-stem-cells-mathematical-modelling-and-simulations
#16
Nikolaos Sfakianakis, Niklas Kolbe, Nadja Hellmann, Mária Lukáčová-Medvid'ová
We propose a multiscale model for the invasion of the extracellular matrix by two types of cancer cells, the differentiated cancer cells and the cancer stem cells. We investigate the epithelial mesenchymal-like transition between them being driven primarily by the epidermal growth factors. We moreover take into account the transdifferentiation program of the cancer stem cells towards the cancer-associated fibroblast cells as well as the fibroblast-driven remodelling of the extracellular matrix. The proposed haptotaxis model combines the macroscopic phenomenon of the invasion of the extracellular matrix by both types of cancer cells with the microscopic dynamics of the epidermal growth factors...
November 30, 2016: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/27905026/native-matrix-based-human-lung-alveolar-tissue-model-in-vitro-studies-of-the-reparatory-actions-of-mesenchymal-stem-cells
#17
Ieva Bruzauskaite, Jovile Raudoniute, Jaroslav Denkovskij, Edvardas Bagdonas, Sandra Meidute-Abaraviciene, Vaida Simonyte, Daiva Bironaite, Almantas Siaurys, Eiva Bernotiene, Ruta Aldonyte
Studies of lung diseases in vitro often rely on flat, plastic-based monocultures, due to short lifespan of primary cells, complicated anatomy, lack of explants, etc. We hereby present a native 3D model with cues for repopulating epithelial cells. Abilities of mesenchymal stem cells (MSC) to modulate bacterial lipopolysaccharide (LPS) and cigarette smoke-induced injury to pulmonary epithelium were tested in our model. Post-mortem human lung tissue was sliced, cut and decellularized. Resulting matrix pads were reseeded with pulmonary epithelium (A549 line)...
December 1, 2016: Cytotechnology
https://www.readbyqxmd.com/read/27904969/metabolic-responses-and-omics-technologies-for-elucidating-the-effects-of-heat-stress-in-dairy-cows
#18
REVIEW
Li Min, Shengguo Zhao, He Tian, Xu Zhou, Yangdong Zhang, Songli Li, Hongjian Yang, Nan Zheng, Jiaqi Wang
Heat stress (HS) negatively affects various industries that rely on animal husbandry, particularly the dairy industry. A better understanding of metabolic responses in HS dairy cows is necessary to elucidate the physiological mechanisms of HS and offer a new perspective for future research. In this paper, we review the current knowledge of responses of body metabolism (lipid, carbohydrate, and protein), endocrine profiles, and bovine mammary epithelial cells during HS. Furthermore, we summarize the metabolomics and proteomics data that have revealed the metabolite profiles and differentially expressed proteins that are a feature of HS in dairy cows...
November 30, 2016: International Journal of Biometeorology
https://www.readbyqxmd.com/read/27904960/active-and-passive-involvement-of-claudins-in-the-pathophysiology-of-intestinal-inflammatory-diseases
#19
REVIEW
Christian Barmeyer, Michael Fromm, Jörg-Dieter Schulzke
Intestinal inflammatory diseases, four of which are discussed here, are associated with alterations of claudins. In ulcerative colitis, diarrhea and antigen entry into the mucosa occurs. Claudin-2 is upregulated but data on other claudins are still limited or vary (e.g., claudin-1 and -4). Apart from that, tight junction changes contribute to diarrhea via a leak flux mechanism, while protection against antigen entry disappears behind epithelial gross lesions (erosions) and apoptotic foci. Crohn's disease is additionally characterized by a claudin-5 and claudin-8 reduction which plays an active role in antigen uptake already before gross lesions appear...
November 30, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27904778/long-non-coding-rna-ccat2-promotes-gastric-cancer-proliferation-and-invasion-by-regulating-the-e-cadherin-and-lats2
#20
Yong-Jun Wang, Jian-Zhen Liu, Pei Lv, Yi Dang, Jiang-Yan Gao, Yong Wang
Dysregulation of long non-coding RNAs (lncRNAs) play important roles in tumor development and progression. The long non-coding RNA CCAT2 has been identified to be up-regulated in gastric cancer (GC). However, the detailed molecular mechanism of CCAT2 involved in GC progression is still unknown. The aim of this study was to explore the expression and role of CCAT2 in GC progression. In the study, the expression levels of CCAT2 were significantly up-regulated in 108 cases GC tissues compared with adjacent non-tumor tissues by qRT-PCR analysis...
2016: American Journal of Cancer Research
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