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Bronchoalveolar lavage

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https://www.readbyqxmd.com/read/28214650/2-methoxyestradiol-protects-against-igg-immune-complex-induced-acute-lung-injury-by-blocking-nf-%C3%AE%C2%BAb-and-ccaat-enhancer-binding-protein-%C3%AE-activities
#1
Chunguang Yan, Yanfei Shen, Qiqing Sun, Dong Yuan, Huifang Tang, Hongwei Gao
Increasing evidences indicate that 2-Methoxyestradiol (2ME2) plays an essential role in protecting against inflammatory responses. However, its effect on IgG immune complex (IC)-induced acute lung injury (ALI) remains enigmatic. In the study, by using i.p. administration of 2ME2, we evaluated its influence on IgG IC-induced pulmonary injury in mice. We found that during IgG IC-induced ALI, mice treated by 2ME2 displayed a substantial decrease in vascular permeability and neutrophil influx (represented by myeloperoxidase activity) when compared with their counterparts receiving vehicle treatment...
February 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28214275/detection-of-pneumocystis-jirovecii-by-nested-pcr-in-hiv-negative-patients-with-pulmonary-disease
#2
Cristina Rodrigues Santos, Ângela M de Assis, Edson A Luz, Luzia Lyra, Ivan F Toro, José Claudio C Seabra, Dira H Daldin, Tathiane U Marcalto, Marcos T Galasso, Ronaldo F Macedo, Angélica Z Schreiber, Francisco H Aoki
BACKGROUND: Nested PCR can be used to determine the status of Pneumocystis jirovecii infection in other lung diseases. AIMS: This study sought to detect a target DNA fragment (mitochondrial large subunit rRNA or mtL SUrRNA) of P. jirovecii in patients with lung disease who underwent bronchoscopy with collection of bronchoalveolar lavage (BAL). METHODS: The results from toluidine blue staining were compared with those obtained using molecular methods that included an "in house" DNA extraction procedure, PCR and nested PCR...
February 14, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28213886/dysregulation-of-metabolic-pathways-in-a-mouse-model-of-allergic-asthma
#3
Kevin D Quinn, Michaela Schedel, Yasmeen Nkrumah-Elie, Anthony Joetham, Michael Armstrong, Charmion Cruickshank-Quinn, Richard Reisdorph, Erwin W Gelfand, Nichole Reisdorph
BACKGROUND: Asthma is a complex lung disease resulting from the interplay of genetic and environmental factors. To understand the molecular changes that occur during the development of allergic asthma without genetic and environmental confounders, an experimental model of allergic asthma in mice was used. Our goals were to (1) identify changes at the small molecule level due to allergen exposure, (2) determine perturbed pathways due to disease, and (3) determine whether small molecule changes correlate with lung function...
February 18, 2017: Allergy
https://www.readbyqxmd.com/read/28213470/higher-mini-bal-total-protein-concentration-in-early-ards-predicts-faster-resolution-of-lung-injury-measured-by-more-ventilator-free-days
#4
Carolyn M Hendrickson, Jason Abbott, Hanjing Zhuo, Kathleen D Liu, Carolyn S Calfee, Michael A Matthay
The protein concentration of alveolar edema fluid in acute respiratory distress syndrome (ARDS) is dynamic. It reflects alveolar flooding during acute injury as well as fluid and protein clearance over time. We hypothesized that among ARDS patients treated with low tidal volume ventilation, higher concentrations of protein in mini-bronchoalveolar lavage (mBAL) samples would predict slower resolution of lung injury and worse clinical outcomes. Total protein and IgM concentrations in Day 0 mBAL samples from 79 subjects enrolled in the aerosolized albuterol (ALTA) ARDS Network Albuterol trial were measured by colorimetric assay and ELISA respectively...
February 17, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28212655/elderly-onset-hereditary-pulmonary-alveolar-proteinosis-and-its-cytokine-profile
#5
Masayuki Ito, Kazuyuki Nakagome, Hiromitsu Ohta, Keiichi Akasaka, Yoshitaka Uchida, Atsushi Hashimoto, Ayako Shiono, Toshinori Takada, Makoto Nagata, Jun Tohyama, Koichi Hagiwara, Minoru Kanazawa, Koh Nakata, Ryushi Tazawa
BACKGROUND: Pulmonary alveolar proteinosis (PAP) is a rare lung disease characterized by surfactant accumulation, and is caused by disruption of granulocyte/macrophage colony-stimulating factor (GM-CSF) signaling. Abnormalities in CSF2 receptor alpha (CSF2RA) were reported to cause pediatric hereditary PAP. We report here the first case of CSF2RA-mutated, elderly-onset hereditary (h) PAP. CASE PRESENTATION: The patient developed dyspnea on exertion, and was diagnosed with PAP at the age of 77 years, based on findings from chest computed tomography scan and bronchoalveolar lavage...
February 17, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28205623/preventive-effects-of-carnosine-on-lipopolysaccharide-induced-lung-injury
#6
Ken-Ichiro Tanaka, Toshifumi Sugizaki, Yuki Kanda, Fumiya Tamura, Tomomi Niino, Masahiro Kawahara
Acute respiratory distress syndrome (ARDS) is a potentially devastating form of acute lung injury, which involves neutrophilic inflammation and pulmonary cell death. Reactive oxygen species (ROS) play important roles in ARDS development. New compounds for inhibiting the onset and progression of ARDS are required. Carnosine (β-alanyl-L-histidine) is a small di-peptide with numerous activities, including antioxidant effects, metal chelation, proton buffering capacity and the inhibition of protein carbonylation and glycoxidation...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204830/monoclonal-antibody-against-toll-like-receptor%C3%A2-4-attenuates-ventilator-induced-lung-injury-in-rats-by-inhibiting-myd88-and-nf-%C3%AE%C2%BAb-dependent-signaling
#7
Cuiyuan Huang, Linghui Pan, Fei Lin, Huijun Dai, Ruili Fu
The mechanisms through which mechanical ventilation causes non-infectious inflammatory diseases and lung injury are poorly understood. Animals models of this type of injury suggest that it involves signaling mediated by Toll‑like receptor (TLR)4 and 9. In this study, in order to gain further insight into the involvement of TLR4 in this type of injury, we performed in vivo and in vitro experiments to determine the mechanisms through which TLR4 triggers inflammation. We also examined whether the use of TLR4 monoclonal antibody (mAb) can alleviate this type of injury...
February 1, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28203411/development-of-a-non-infectious-rat-model-of-acute-exacerbation-of-idiopathic-pulmonary-fibrosis
#8
Shan-Shan Chen, Zhao-Fang Yin, Tao Chen, Hui Qiu, Ya-Ru Wei, Shan-Shan Du, Yue-Ping Jin, Meng-Meng Zhao, Qin Wu, Dong Weng, Hui-Ping Li
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a chronic progressive interstitial lung disease with severe pulmonary fibrosis. The main cause of IPF-associated death is acute exacerbation of IPF (AE-IPF). This study aims to develop a rat model of AE-IPF by two intratracheal perfusions with bleomycin (BLM). METHODS: Ninety male Sprague Dawley (SD) rats were randomized into three groups: an AE-IPF model group (BLM + BLM group), an IPF model group (BLM group), and a normal control group...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28203410/relationship-between-radiologic-patterns-pulmonary-function-values-and-bronchoalveolar-lavage-fluid-cells-in-newly-diagnosed-sarcoidosis
#9
Regina Aleksonienė, Ingrida Zeleckienė, Mindaugas Matačiūnas, Roma Puronaitė, Laimutė Jurgauskienė, Radvilė Malickaitė, Edita Strumilienė, Vygantas Gruslys, Rolandas Zablockis, Edvardas Danila
BACKGROUND: The aim of the present study was to identify specious radiologic and/or physiologic prognostic marker(s), which lead to optimize of the patient follow-up frequency. METHODS: Eighty consecutive patients with newly diagnosed pulmonary sarcoidosis. Patients underwent chest radiography, high-resolution computed tomography (HRCT) examination, pulmonary function tests (PFT), bronchoscopy with bronchoalveolar lavage (BAL) and lung biopsy, and bronchoalveolar lavage fluid (BALF) cell examination...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28202124/-effect-of-heat-shock-factor-1-on-airway-hyperresponsiveness-and-airway-inflammation-in-mice-with-allergic-asthma
#10
Jing Wang, Li-Hong Xin, Wei Cheng, Zhen Wang, Wen Zhang
OBJECTIVE: To investigate the effect of heat shock factor 1 (HSF1) on airway hyperresponsiveness and airway inflammation in mice with asthma and possible mechanisms. METHODS: A total of 36 mice were randomly divided into four groups: control, asthma, HSF1 small interfering RNA negative control (siHSF1-NC), and siHSF1 intervention (n=9 each). Ovalbumin (OVA) sensitization and challenge were performed to induce asthma in the latter three groups. The mice in the siHSF1-NC and siHSF1 groups were treated with siHSF1-NC and siHSF1, respectively...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28202030/upregulation-of-interleukin-33-and-thymic-stromal-lymphopoietin-levels-in-the-lungs-of-idiopathic-pulmonary-fibrosis
#11
Jong-Uk Lee, Hun Soo Chang, Hyeon Ju Lee, Chang An Jung, Da Jeong Bae, Hyun Ji Song, Jong Sook Park, Soo-Taek Uh, Young Hoon Kim, Ki-Hyun Seo, Choon-Sik Park
BACKGROUND: Innate T helper type 2 (Th2) immune responses mediated by interleukin (IL)-33, thymic stromal lymphopoietin (TSLP), and IL-25 have been shown to play an important role in pulmonary fibrosis of animal models; however, their clinical implications remain poorly understood. METHODS: TSLP, IL-25, and IL-33 concentrations were measured in bronchoalveolar lavage fluids obtained from normal controls (NCs; n = 40) and from patients with idiopathic pulmonary fibrosis (IPF; n = 100), non-specific interstitial pneumonia (NSIP; n = 22), hypersensitivity pneumonitis (HP; n = 20), and sarcoidosis (n = 19)...
February 15, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28199353/oral-administration-of-lactobacillus-paracasei-l9-attenuates-pm2-5-induced-enhancement-of-airway-hyperresponsiveness-and-allergic-airway-response-in-murine-model-of-asthma
#12
Xifan Wang, Yan Hui, Liang Zhao, Yanling Hao, Huiyuan Guo, Fazheng Ren
This study investigated allergy immunotherapy potential of Lactobacillus paracasei L9 to prevent or mitigate the particulate matter 2.5 (PM2.5) enhanced pre-existing asthma in mice. Firstly, we used a mouse model of asthma (a 21-day ovalbumin (OVA) sensitization and challenge model) followed by PM2.5 exposure twice on the same day of the last challenge. PM2.5 was collected from the urban area of Beijing and underwent analysis for metals and polycyclic aromatic hydrocarbon contents. The results showed that PM2...
2017: PloS One
https://www.readbyqxmd.com/read/28198717/mitochondrial-dna-induced-inflammatory-responses-and-lung-injury-in-thermal-injury-rat-model-protective-effect-of-epigallocatechin-gallate
#13
Ruiqi Liu, Fei Xu, Si Si, Xueshan Zhao, Siwei Bi, Ying Cen
Lungs are easily damaged by the inflammatory responses induced after extensive burns. The aim here was to investigate the protective role of epigallocatechin gallate (EGCG) in mitochondrial DNA (mtDNA)-mediated inflammatory responses and acute respiratory distress syndrome (ARDS) in a rat model of thermal injury. Male Sprague-Dawley rats were randomly assigned to five groups. In the first experiment, a full-thickness thermal injury or control procedure, covering 30% of the TBSA, was inflicted on three groups designated as the thermal injury, EGCG, and sham control groups...
February 6, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28196961/bacterial-topography-of-the-healthy-human-lower-respiratory-tract
#14
Robert P Dickson, John R Erb-Downward, Christine M Freeman, Lisa McCloskey, Nicole R Falkowski, Gary B Huffnagle, Jeffrey L Curtis
Although culture-independent techniques have refuted lung sterility in health, controversy about contamination during bronchoscope passage through the upper respiratory tract (URT) has impeded research progress. We sought to establish whether bronchoscopic sampling accurately reflects the lung microbiome in health and to distinguish between two proposed routes of authentic microbial immigration, (i) dispersion along contiguous respiratory mucosa and (ii) subclinical microaspiration. During bronchoscopy of eight adult volunteers without lung disease, we performed seven protected specimen brushings (PSB) and bilateral bronchoalveolar lavages (BALs) per subject...
February 14, 2017: MBio
https://www.readbyqxmd.com/read/28195650/cell-tube-block-a-new-technique-to-produce-cell-blocks-from-fluid-cytology-samples
#15
Ricardo Marcos, Marta Santos, Carla Marrinhas, Mario Caniatti
BACKGROUND: Cell blocks are widely used in human cytopathology. Several techniques have been proposed to convert fluid specimens into solid material, which after embedding in paraffin can be used for histochemistry, immunohistochemistry, or molecular testing. In contrast, only in the last few years, have cell blocks begun to be used in the veterinary field. OBJECTIVES: The purpose of the study was to present the production and features of cell tube blocks (CTB) with veterinary liquid samples...
February 13, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28195541/assessment-of-egfr-mutation-status-using-cell-free-dna-from-bronchoalveolar-lavage-fluid
#16
Sojung Park, Jae Young Hur, Kye Young Lee, Jae Cheol Lee, Jin Kyung Rho, Sun Hwa Shin, Chang-Min Choi
BACKGROUND: Much attention has been focused on epidermal growth factor receptor (EGFR) mutation testing since the introduction of EGFR-tyrosine kinase inhibitors have improved survival in EGFR-positive lung cancer patients. Liquid biopsy using circulating tumor cells or cell-free DNA (cfDNA) has enabled less invasive testing, but requires a highly sensitive method. To date, liquid biopsy using bronchoalveolar lavage (BAL) fluid has rarely been used. METHODS: From 20 patients with lung adenocarcinoma, we isolated cfDNA from 20 samples of cell-free BAL fluid and 19 cell-free bronchial washing samples...
February 14, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28194607/il-17a-monoclonal-antibody-partly-reverses-the-glucocorticoids-insensitivity-in-mice-exposed-to-ozonec
#17
Xia Fei, Peng-Yu Zhang, Xue Zhang, Guo-Qing Zhang, Wu-Ping Bao, Ying-Ying Zhang, Min Zhang, Xin Zhou
Exposure to ozone has been associated with airway inflammation and glucocorticoid insensitivity. This study aimed to observe the capacity of anti-murine interleukin-17A monoclonal antibody (IL-17mAb) to reverse ozone-induced glucocorticoid insensitivity and to detect its effects with glucocorticoids in protecting against airway inflammation. After C57/BL6 mice were exposed to ozone (2.5 ppm; 3 h) for 12 times over 6 weeks, PBS, IL-17mAb (50 ug/ml), dexamethasone (2 mg/kg), and combination administration of IL-17mAb (50 ug/ml) and dexamethasone (2 mg/kg) were intraperitoneally injected into mice at a dose of 0...
February 13, 2017: Inflammation
https://www.readbyqxmd.com/read/28194062/performance-of-galactomannan-antigen-beta-d-glucan-and-aspergillus-lateral-flow-device-for-the-diagnosis-of-invasive-aspergillosis
#18
Gökhan Metan, Muzaffer Keklik, Gökçen Dinç, Çiğdem Pala, Afra Yıldırım, Berkay Saraymen, Mustafa Yavuz Köker, Leylagül Kaynar, Bülent Eser, Mustafa Çetin
Aspergillus lateral-flow device (LFD) was recently introduced as a practical tool for the diagnosis of invasive aspergillosis (IA). We investigated the performance of Aspergillus-LFD as a point-of-care test for the diagnosis of IA. Serum samples were collected twice weekly from patients who received intensive chemotherapy for acute leukemia, or recepients of allogeneic stem cell transplantation. Aspergillus galactomannan (GM) antigen, 1,3-beta-d-glucan and Aspergillus-LFD tests were carried out according to manufacturers' recommendations...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28193223/malondialdehyde-acetaldehyde-maa-adducted-surfactant-protein-induced-lung-inflammation-is-mediated-through-scavenger-receptor-a-sr-a1
#19
Muna Sapkota, Jane M DeVasure, Kusum K Kharbanda, Todd A Wyatt
BACKGROUND: Co-exposure to cigarette smoke and alcohol leads to the generation of high concentrations of acetaldehyde and malondialdehyde in the lung. These aldehydes being highly electrophilic in nature react with biologically relevant proteins such as surfactant protein D (SPD) through a Schiff base reaction to generate SPD adducted malondialdehyde-acetaldehyde adduct (SPD-MAA) in mouse lung. SPD-MAA results in an increase in lung pro-inflammatory chemokine, keratinocyte chemoattractant (KC), and the recruitment of lung lavage neutrophils...
February 13, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28192751/ameliorative-potential-of-linagliptin-and-or-calcipotriol-on-bleomycin-induced-lung-fibrosis-in-vivo-and-in-vitro-study
#20
Ahmed M Kabel, Maaly A Abd Elmaaboud, Aliaa Atef, Mohammed H Baali
Pulmonary fibrosis is a serious medical problem that may significantly compromise respiratory functions. The aim of this work was to study the effect of linagliptin and/or calcipotriol on bleomycin-induced pulmonary fibrosis and to explore the possible mechanisms underlying this effect. One hundred and twenty male C57BL/6 mice were divided into 6 equal groups as follows: control group; bleomycin group; bleomycin+carboxymethylcellulose group; bleomycin+linagliptin group; bleomycin+calcipotriol group and bleomycin+linagliptin+calcipotriol group...
February 4, 2017: Environmental Toxicology and Pharmacology
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