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https://www.readbyqxmd.com/read/29316752/-experimental-study-on-the-expression-of-%C3%AE-sma-and-hmgb1-in-silicotic-fibrosismodel-rats-interfered-by-lumbricus
#1
T Yu, G H Li, Y M Jia, Y Lou, X Y Gan
Objective: To observe the expression of alpha smooth muscle actin (α-SMA) and high mo-bility group protein B1 (HMGB1) in silicosis model rats interfered by lumbricus. Methods: 45 rats were ran-domly divided into the control group, model group and group interfered by lumbricus. The silicosis model rats were established. The group interfered by lumbricus were intragastric administered with lumbricus decoction by the 4 ml/kg dose. The control group and model group were ig administered with the equal amount of normal saline...
November 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29297856/silicosis-mortality-in-italy-temporal-trends-1990-2012-and-spatial-patterns-2000-2012
#2
Giada Minelli, Amerigo Zona, Fulvio Cavariani, Pietro Comba, Roberto Pasetto
INTRODUCTION: The objective of this contribution is to describe, for the first time, occurrence, temporal trends and spatial patterns of mortality from silicosis in Italy in recent decades. METHODS: Mortality data on pneumoconiosis due to silica or silicates (ICD-9 code 502, ICD-10 code J62) were extracted from the Italian National Mortality Database. Temporal trends were analysed in the period 1990-2012; standardized rates per 100 000, spatial distribution, including cluster analysis, were computed for eleven years, i...
October 2017: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/29294538/-current-situation-and-progression-in-the-drug-therapy-for-silicosis
#3
(no author information available yet)
No abstract text is available yet for this article.
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29294528/-silicosis-combined-with-pulmonary-trberculosis-and-aspergilloma-a-case-report
#4
(no author information available yet)
No abstract text is available yet for this article.
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29294518/-study-of-the-association-between-interleukin-1-polymorphisms-and-genetic-susceptibility-of-coal-workers-pneumoconiosis-and-silicosis
#5
W Wang, W H Zhang, Y S Tao, X Zhuang, M J Chu
Objective: To evaluate the relationship between IL-1 gene polymorphisms and coal workers' pneumoconiosis and silicosis susceptibility. Methods: We searched published full-text from PubMed, Web of Science, CNKI, VIP and Wanfang to collect case-control study on IL-1 gene polymorphisms with coal workers' pneumoconiosis and silicosis susceptibility. Eight articles, including 10 case-control studies were included in our study. All analyses were performed using the Stata version 12.0 software. Results: The IL-1RA (+2018) TC or CC variant genotypes were associated with coal workers' pneumoconiosis and silicosis risk (OR=1...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29290828/circrna-mediates-silica-induced-macrophage-activation-via-hectd1-zc3h12a-dependent-ubiquitination
#6
Zewei Zhou, Rong Jiang, Xiyue Yang, Huifang Guo, Shencun Fang, Yingming Zhang, Yusi Cheng, Jing Wang, Honghong Yao, Jie Chao
Rationale: Phagocytosis of silicon dioxide (SiO2) into lung cells causes an inflammatory cascade that results in fibroblast proliferation and migration, followed by fibrosis. Circular RNAs (circRNAs) are a subclass of non-coding RNAs detected within mammalian cells; however, researchers have not determined whether circRNAs are involved in the pathophysiological process of silicosis. The upstream molecular mechanisms and functional effects on cell apoptosis, proliferation and migration were investigated to elucidate the role of circRNAs in SiO2-induced inflammation in pulmonary macrophages...
2018: Theranostics
https://www.readbyqxmd.com/read/29286914/tp53-p-r72p-genotype-is-a-marker-of-poor-prognosis-in-lung-cancer
#7
Mirko Peter Neumann, María Victoria González, Ana S Pitiot, Íñigo Santamaría, Cristina Martínez, Adonina Tardón, Aurora Astudillo, Milagros Balbín
BACKGROUND: Lung cancer is a leading cause of death worldwide, with poor survival rates despite diagnostic and therapeutic advances. Markers are needed in order to improve clinical patient management and survival. TP53 is frequently involved in lung cancer development with polymorphic sites potentially having a role in it. This study aims to determine the value of codon 72 missense polymorphic variant genotyping, TP53 R72P, as a prognostic factor in NSCLC patients. METHODS: One hundred and fifteen NSCLC samples from patients exposed to tobacco smoke and silica dust from Asturias (Northern Spain) were genotyped by direct sequencing...
December 18, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29279481/lupus-pleuritis-with-silicotic-nodules-in-the-parietal-pleura
#8
Kazuo Tsuchiya, Mikio Toyoshima, Atsuki Fukada, Daisuke Akahori, Kazuhito Funai, Takafumi Suda
A 63-year-old man with occupational exposure to silica presented with cutaneous ulcer, pleuritic pain, and a fever. Laboratory data showed lymphopenia and positive serum antinuclear and anti-DNA antibodies. Computed tomography of the chest showed egg shell-like calcification of the hilar and mediastinal lymph nodes without pulmonary parenchymal involvement of silicosis. A surgical biopsy showed silicotic nodules with surrounding infiltration of lymphocytes and plasma cells in the parietal pleura. With a diagnosis of systemic lupus erythematosus (SLE), systemic corticosteroid therapy was given, which led to the resolution of symptoms and laboratory abnormalities...
December 27, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29258746/nlrp3-inflammasome-inhibition-attenuates-silica-induced-epithelial-to-mesenchymal-transition-emt-in-human-bronchial-epithelial-cells
#9
Xiang Li, Xiaopei Yan, Yanli Wang, Jingjing Wang, Fang Zhou, Hong Wang, Weiping Xie, Hui Kong
Silicosis is an incurable and progressive lung disease characterized by chronic inflammation and fibroblasts accumulation. Studies have indicated a vital role for epithelial-mesenchymal transition (EMT) in fibroblasts accumulation. NLRP3 inflammasome is a critical mediator of inflammation in response to a wide range of stimuli (including silica particles), and plays an important role in many respiratory diseases. However, whether NLRP3 inflammasome regulates silica-induced EMT remains unknown. Our results showed that silica induced EMT in human bronchial epithelial cells (16HBE cells) in a dose- and time-dependent manner...
December 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29238093/circhipk2-mediated-%C3%AF-1r-promotes-endoplasmic-reticulum-stress-in-human-pulmonary-fibroblasts-exposed-to-silica
#10
Zhouli Cao, Qingling Xiao, Xiaoniu Dai, Zewei Zhou, Rong Jiang, Yusi Cheng, Xiyue Yang, Huifang Guo, Jing Wang, Zhaoqing Xi, Honghong Yao, Jie Chao
Silicosis is characterized by fibroblast accumulation and excessive deposition of extracellular matrix. Although the roles of SiO2-induced chemokines and cytokines released from alveolar macrophages have received significant attention, the direct effects of SiO2 on protein production and functional changes in pulmonary fibroblasts have been less extensively studied. Sigma-1 receptor, which has been associated with cell proliferation and migration in the central nervous system, is expressed in the lung, but its role in silicosis remains unknown...
December 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29216763/upregulated-mir-29c-suppresses-silica-induced-lung-fibrosis-through-the-wnt-%C3%AE-catenin-pathway-in-mice
#11
X Wang, K Xu, X Y Yang, J Liu, Q Zeng, F S Wang
Silicosis is an irreversible lung disease resulting from long-term inhalation of occupational dust containing silicon dioxide. However, the pathogenesis of silicosis has not been clearly understood yet. Accumulating evidence suggests that miR-29 may have a significant anti-fibrotic capacity, meanwhile it may relate to Wnt/β-catenin pathway. The purpose of this study was to discuss the role of miR-29 in the progression of silicosis. A lentiviral vector was constructed, named Lv-miR-29c, which was overexpressing miR-29c...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29210092/comparison-of-digital-and-film-chest-radiography-for-detection-and-medical-surveillance-of-silicosis-in-a-setting-with-a-high-burden-of-tuberculosis
#12
Alfred Franzblau, Jim teWaterNaude, Ananda Sen, Hannah d'Arcy, Jacqueline S Smilg, Khanyakude S Mashao, Cristopher A Meyer, James E Lockey, Rodney I Ehrlich
BACKGROUND: Continuing use of analog film and digital chest radiography for screening and surveillance for pneumoconiosis and tuberculosis in lower and middle income countries raises questions of equivalence of disease detection. This study compared analog to digital images for intra-rater agreement across formats and prevalence of changes related to silicosis and tuberculosis among South African gold miners using the International Labour Organization classification system. METHODS: Miners with diverse radiological presentations of silicosis and tuberculosis were recruited...
December 6, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/29197904/exposure-to-respirable-crystalline-silica-in-the-construction-industry-do-we-have-a-problem
#13
David McLean, Bill Glass, Andrea 't Mannetje, Jeroen Douwes
AIMS: To assess personal exposure to respirable dust and respirable crystalline silica (RCS) in New Zealand construction workers. METHODS: In a pilot study, 39 personal samples were collected from a cross-section of workers engaged in a range of tasks performed on construction sites that were expected to entail exposure to respirable crystalline silica. Nine static samples were taken at locations adjacent to these tasks. Particle size-selective sampling heads were used to collect the respirable fraction of airborne particulates...
December 1, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/29165430/subcutaneous-administration-of-infliximab-attenuated-silica-induced-lung-fibrosis
#14
Hua Zhang, Jun-Na Sui, Lei Gao, Jian Guo
OBJECTIVES: To investigate the influence of the anti-tumor necrosis factor-α infliximab (IFX) in the case of rats with silicosis. MATERIAL AND METHODS: Forty-eight Wistar rats were randomly divided into 3 groups. The study group (N = 16) - silicosis was induced by intratracheal instillation of 50 mg silica on day 1, and IFX was subcutaneously administered at a dose of 15 mg/kg of body weight from day 2 to day 6, the vehicle group (N = 16) - silica used as the study group but without IFX, the sham group (N = 16) - 1 ml of saline was intratracheal-used...
November 21, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/29165057/pulmonary-toxicity-and-global-gene-expression-changes-in-response-to-sub-chronic-inhalation-exposure-to-crystalline-silica-in-rats
#15
Christina Umbright, Rajendran Sellamuthu, Jenny R Roberts, Shih-Houng Young, Diana Richardson, Diane Schwegler-Berry, Walter McKinney, Bean Chen, Ja Kook Gu, Michael Kashon, Pius Joseph
Exposure to crystalline silica results in serious adverse health effects, most notably, silicosis. An understanding of the mechanism(s) underlying silica-induced pulmonary toxicity is critical for the intervention and/or prevention of its adverse health effects. Rats were exposed by inhalation to crystalline silica at a concentration of 15 mg/m(3), 6 hr/day, 5 days/week for 3, 6 or 12 weeks. Pulmonary toxicity and global gene expression profiles were determined in lungs at the end of each exposure period...
2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29163164/lassbio-897-reduces-lung-injury-induced-by-silica-particles-in-mice-potential-interaction-with-the-a2a-receptor
#16
Vinicius F Carvalho, Tatiana P T Ferreira, Ana C S de Arantes, François Noël, Roberta Tesch, Carlos M R Sant'Anna, Eliezer J L Barreiro, Carlos A M Fraga, Patrícia M Rodrigues E Silva, Marco A Martins
Silicosis is a lethal fibro-granulomatous pulmonary disease highly prevalent in developing countries, for which no proper therapy is available. Among a small series of N-acylhydrazones, the safrole-derived compound LASSBio-897 (3-thienylidene-3, 4-methylenedioxybenzoylhydrazide) raised interest due to its ability to bind to the adenosine A2A receptor. Here, we evaluated the anti-inflammatory and anti-fibrotic potential of LASSBio-897, exploring translation to a mouse model of silicosis and the A2A receptor as a site of action...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29158824/dioscin-exerts-protective-effects-against-crystalline-silica-induced-pulmonary-fibrosis-in-mice
#17
Chao Li, Yiping Lu, Sitong Du, Siyi Li, Yiting Zhang, Fangwei Liu, Ying Chen, Dong Weng, Jie Chen
Inhalation of crystalline silica particles leads to pulmonary fibrosis, eventually resulting in respiratory failure and death. There are few effective drugs that can delay the progression of this disease; thus, patients with silicosis are usually only offered supportive care. Dioscin, a steroidal saponin, exhibits many biological activities and health benefits including its protective effects against hepatic fibrosis. However, the effect of dioscin on silicosis is unknown. METHODS: We employed experimental mouse mode of silicosis...
2017: Theranostics
https://www.readbyqxmd.com/read/29157141/experimental-study-on-effects-of-drilling-parameters-on-respirable-dust-production-during-roof-bolting-operations
#18
Hua Jiang, Yi Luo, Joe McQuerrey
Underground coalmine roof bolting operators exhibit a continued risk for overexposure to airborne levels of respirable coal and crystalline silica dust from the roof drilling operation. Inhaling these dusts can cause coal worker's pneumoconiosis and silicosis. This research explores the effect of drilling control parameters, specifically drilling bite depth, on the reduction of respirable dust generated during the drilling process. Laboratory drilling experiments were conducted and results demonstrated the feasibility of this dust control approach...
November 20, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29149883/serum-concentrations-of-krebs-von-den-lungen-6-surfactant-protein-d-and-matrix-metalloproteinase-2-as-diagnostic-biomarkers-in-patients-with-asbestosis-and-silicosis-a-case-control-study
#19
Changjiang Xue, Na Wu, Xue Li, Meihua Qiu, Xuqin Du, Qiao Ye
BACKGROUND: Asbestosis and silicosis are progressive pneumoconioses characterized by interstitial fibrosis following exposure to asbestos or silica dust. We evaluated the potential diagnostic biomarkers for these diseases. METHODS: The serum concentrations of Krebs von den Lungen-6 (KL-6), surfactant protein D (SP-D), and matrix metalloproteinase-2 (MMP-2), MMP-7, and MMP-9 were measured in 43 patients with asbestosis, 45 patients with silicosis, 40 dust-exposed workers (DEWs) without pneumoconiosis, and 45 healthy controls (HCs)...
November 17, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29135200/overview-of-silica-related-clusters-in-the-united-states-will-fracking-operations-become-the-next-cluster
#20
M Thomas Quail
Silicosis is the oldest know occupational pulmonary disease. It is a progressive disease and any level of exposure to respirable crystalline silica particles or dust has the potential to develop into silicosis. Silicosis is caused by silica particles or dust entering the lungs and damaging healthy lung tissue. The damage restricts the ability to breathe. Exposure to silica increases a worker’s risk of developing cancer or tuberculosis. This special report will provide background history of silicosis in the U...
January 2017: Journal of Environmental Health
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