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Physiology of lung

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https://www.readbyqxmd.com/read/28105341/changes-in-blood-concentrations-of-trace-metals-in-cancer-patients-receiving-cisplatin-based-chemotherapy
#1
Tsutomu Nakamura, Minoru Takahashi, Riho Niigata, Kazuhiko Yamashita, Manabu Kume, Midori Hirai, Hiroyuki Yasui
The administration of cisplatin (CDDP) may influence trace metal concentrations in body fluids. In order to test this hypothesis, the blood concentrations of trace metals were determined during the present study in eight Japanese esophageal and lung cancer patients receiving CDDP-based chemotherapy. The levels of manganese, iron (Fe), cobalt, copper, zinc (Zn), platinum and lead in the plasma were determined by inductively coupled plasma-mass spectrometry. In addition, the serum levels of Fe, transferrin and ferritin were evaluated...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28103946/epcr-promotes-breast-cancer-progression-by-altering-spock1-testican-1-mediated-3d-growth
#2
Naiara Perurena, Carolina Zandueta, Susana Martínez-Canarias, Haritz Moreno, Silvestre Vicent, Ana S Almeida, Elisabet Guruceaga, Roger R Gomis, Marta Santisteban, Mikala Egeblad, José Hermida, Fernando Lecanda
BACKGROUND: Activated protein C/endothelial protein C receptor (APC/EPCR) axis is physiologically involved in anticoagulant and cytoprotective activities in endothelial cells. Emerging evidence indicates that EPCR also plays a role in breast stemness and human tumorigenesis. Yet, its contribution to breast cancer progression and metastasis has not been elucidated. METHODS: Transcriptomic status of EPCR was examined in a cohort of 286 breast cancer patients. Cell growth kinetics was evaluated in control and EPCR and SPARC/osteonectin, Cwcv, and kazal-like domains proteoglycan (SPOCK1/testican 1) silenced breast cancer cells in 2D, 3D, and in co-culture conditions...
January 19, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28103562/a-decision-support-system-for-tele-monitoring-copd-related-worrisome-events
#3
Mario Merone, Claudio Pedone, Giuseppe Capasso, Raffaele Antonelli Incalzi, Paolo Soda
Chronic Obstructive Pulmonary Disease (COPD) is a preventable, treatable and slowly progressive disease, whose course is aggravated by a periodic worsening of symptoms and lung function lasting for several days. The development of home telemonitoring systems has made possible to collect symptoms and physiological data in electronic records, boosting the development of decision support systems (DSSs). Current DSSs work with physiological measurements collected by means of several measuring and communication devices as well as with symptoms gathered by questionnaires submitted to COPD subjects...
January 17, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28102957/rf-safety-assessment-of-a-bilateral-four-channel-transmit-receive-7-tesla-breast-coil-sar-versus-tissue-temperature-limits
#4
Thomas M Fiedler, Mark E Ladd, Andreas K Bitz
PURPOSE: The purpose of this work was to perform an RF safety evaluation for a bilateral four-channel transmit/receive breast coil and to determine the maximum permissible input power for which RF exposure of the subject stays within recommended limits. The safety evaluation was done based on SAR as well as on temperature simulations. In comparison to SAR, temperature is more directly correlated with tissue damage, which allows a more precise safety assessment. The temperature simulations were performed by applying three different blood perfusion models as well as two different ambient temperatures...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28101903/development-and-characterization-of-anti-glycopeptide-monoclonal-antibodies-against-human-podoplanin-using-glycan-deficient-cell-lines-generated-by-crispr-cas9-and-talen
#5
Mika K Kaneko, Takuro Nakamura, Ryusuke Honma, Satoshi Ogasawara, Yuki Fujii, Shinji Abe, Michiaki Takagi, Hiroyuki Harada, Hiroyoshi Suzuki, Yasuhiko Nishioka, Yukinari Kato
Human podoplanin (hPDPN), which binds to C-type lectin-like receptor-2 (CLEC-2), is involved in platelet aggregation and cancer metastasis. The expression of hPDPN in cancer cells or cancer-associated fibroblasts indicates poor prognosis. Human lymphatic endothelial cells, lung-type I alveolar cells, and renal glomerular epithelial cells express hPDPN. Although numerous monoclonal antibodies (mAbs) against hPDPN are available, they recognize peptide epitopes of hPDPN. Here, we generated a novel anti-hPDPN mAb, LpMab-21...
January 19, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28100723/a-respiratory-gated-micro-ct-comparison-of-respiratory-patterns-in-free-breathing-and-mechanically-ventilated-rats
#6
Nancy L Ford, Lynda McCaig, Andrew Jeklin, James F Lewis, Ruud A W Veldhuizen, David W Holdsworth, Maria Drangova
In this study, we aim to quantify the differences in lung metrics measured in free-breathing and mechanically ventilated rodents using respiratory-gated micro-computed tomography. Healthy male Sprague-Dawley rats were anesthetized with ketamine/xylazine and scanned with a retrospective respiratory gating protocol on a GE Locus Ultra micro-CT scanner. Each animal was scanned while free-breathing, then intubated and mechanically ventilated (MV) and rescanned with a standard ventilation protocol (56 bpm, 8 mL/kg and PEEP of 5 cm H2O) and again with a ventilation protocol that approximates the free-breathing parameters (88 bpm, 2...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28100330/-protective-effects-of-heat-shock-protein-70-against-hypoxic-pulmonary-hypertension-in-neonatal-rats
#7
Le Wang, Hai-Yan Wu, Ming-Xia Li
OBJECTIVE: To investigate the protective effect of heat shock protein 70 (HSP70) against hypoxic pulmonary hypertension (HPH) in neonatal rats. METHODS: A total of 128 neonatal rats were randomly divided into blank control group, HPH model group, empty virus group, and HSP70 group, with 32 rats in each group. Before the establishment of an HPH model, the rats in the blank control group and HPH model group were given caudal vein injection of 5 μL sterile saline, those in the empty virus group were given caudal vein injection of 5 μL Ad-GFP (1 010 PFU/mL), and those in the HSP70 group were given caudal vein injection of 5 μL Ad-HSP70 (1 010 PFU/mL)...
January 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28099236/intratracheal-instillation-of-perfluorohexane-modulates-the-pulmonary-immune-microenvironment-by-attenuating-early-inflammatory-factors-in-patients-with-smoke-inhalation-injury-a-randomized-controlled-clinical-trial
#8
Hui Ding, Qi Lv, Shiman Wu, Shike Hou, Ziquan Liu, Ning Xu Landén, Ping Tian, Mengyang Yu, Zhiguang Sun, Haojun Fan
Smoke inhalation injury (SII) is associated with significant morbidity and mortality in burn patients, and effective treatments are lacking. Perfluorocarbons (PFCs) have a protective effect against acute lung injury. We aimed to assess the therapeutic effects of perfluorohexane on burn patients with SII. Patients with burns complicated by moderately severe SII were randomly divided into control (n = 11) and PFC groups (n = 12). The control group received conventional treatment (anti-infection, nutritional support, antishock measures, and supportive treatment)...
January 10, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28098894/17%C3%AE-%C3%A2-estradiol-treatment-drives-sp1-to-upregulate-malat%C3%A2-1-expression-and-epigenetically-affects-physiological-processes-in-u2os-cells
#9
Qiongying Hu, Shuiqin Li, Changjin Chen, Menglin Zhu, Yiming Chen, Ziyi Zhao
Osteosarcoma is the most common primary bone tumor characterized by high risk of metastasis, thus presents with an overall survival rate of 60%, despite the use of chemotherapy and surgery. Metastasis‑associated lung adenocarcinoma transcript 1 (MALAT‑1) has been reported to upregulated and epigenetically regulate the metastasis in osteosarcoma; however, the regulatory mechanisms of MALAT‑1 expression remain unclear. In the current study, significant upregulation of MALAT‑1 was observed subsequent to exposure to low concentrations of 17β‑estradiol (E2) in U2OS cells...
January 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28097934/automatic-and-quantitative-measurement-of-laryngeal-video-stroboscopic-images
#10
Chung-Feng Jeffrey Kuo, Joseph Kuo, Shang-Wun Hsiao, Chi-Lung Lee, Jih-Chin Lee, Bo-Han Ke
The laryngeal video stroboscope is an important instrument for physicians to analyze abnormalities and diseases in the glottal area. Stroboscope has been widely used around the world. However, without quantized indices, physicians can only make subjective judgment on glottal images. We designed a new laser projection marking module and applied it onto the laryngeal video stroboscope to provide scale conversion reference parameters for glottal imaging and to convert the physiological parameters of glottis. Image processing technology was used to segment the important image regions of interest...
January 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28090296/endotoxin-and-mechanical-stress-induced-epigenetic-changes-in-the-regulation-of-the-nicotinamide-phosphoribosyltransferase-promoter
#11
Venkateswaran Ramamoorthi Elangovan, Sara M Camp, Gabriel T Kelly, Ankit A Desai, Djanybek Adyshev, Xiaoguang Sun, Stephen M Black, Ting Wang, Joe G N Garcia
Mechanical ventilation, a lifesaving intervention for patients with acute respiratory distress syndrome (ARDS), also unfortunately contributes to excessive mechanical stress and impaired lung physiological and structural integrity. We have elsewhere established the pivotal role of increased nicotinamide phosphoribosyltransferase (NAMPT) transcription and secretion as well as its direct binding to the toll-like receptor 4 (TLR4) in the progression of this devastating syndrome; however, regulation of this critical gene in ventilator-induced lung injury (VILI) is not well characterized...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28090238/red-blood-cell-dynamics-in-biomimetic-microfluidic-networks-of-pulmonary-alveolar-capillaries
#12
Hagit Stauber, Dan Waisman, Netanel Korin, Josué Sznitman
The pulmonary capillary networks (PCNs) embody organ-specific microvasculatures, where blood vessels form dense meshes that maximize the surface area available for gas exchange in the lungs. With characteristic capillary lengths and diameters similar to the size of red blood cells (RBCs), seminal descriptions coined the term "sheet flow" nearly half a century ago to differentiate PCNs from the usual notion of Poiseuille flow in long straight tubes. Here, we revisit in true-scale experiments the original "sheet flow" model and devise for the first time biomimetic microfluidic platforms of organ-specific PCN structures perfused with RBC suspensions at near-physiological hematocrit levels...
January 10, 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28089356/insertions-and-deletions-target-lineage-defining-genes-in-human-cancers
#13
Marcin Imielinski, Guangwu Guo, Matthew Meyerson
Certain cell types function as factories, secreting large quantities of one or more proteins that are central to the physiology of the respective organ. Examples include surfactant proteins in lung alveoli, albumin in liver parenchyma, and lipase in the stomach lining. Whole-genome sequencing analysis of lung adenocarcinomas revealed noncoding somatic mutational hotspots near VMP1/MIR21 and indel hotspots in surfactant protein genes (SFTPA1, SFTPB, and SFTPC). Extrapolation to other solid cancers demonstrated highly recurrent and tumor-type-specific indel hotspots targeting the noncoding regions of highly expressed genes defining certain secretory cellular lineages: albumin (ALB) in liver carcinoma, gastric lipase (LIPF) in stomach carcinoma, and thyroglobulin (TG) in thyroid carcinoma...
January 11, 2017: Cell
https://www.readbyqxmd.com/read/28088638/the-dlno-dlco-ratio-physiological-significance-and-clinical-implications
#14
J M B Hughes, A T Dinh-Xuan
DLNO/DLCO directly measures the ratio of the diffusing capacities of the lung for nitric oxide (NO) and carbon monoxide (CO). In terms of the Roughton and Forster, 1957; equation, 1/DL=1/Dm+1/θVc, where Dm is the membrane (Dm) and θVc is the red cell component of the overall diffusing conductance (DL), DLNO mostly reflects the Dm component and DLCO the θVc red cell component. The DLNO/DLCO ratio is positively related to the DmCO/Vc ratio and the CO red cell resistance (1/θCOVc) as a percentage of the total resistance (1/DLCO), independent of the absolute values of DLNO or DLCO...
January 11, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28086991/does-waterfall-aerosol-influence-mucosal-immunity-and-chronic-stress-a-randomized-controlled-clinical-trial
#15
Carina Grafetstätter, Martin Gaisberger, Johanna Prossegger, Markus Ritter, Predrag Kolarž, Christina Pichler, Josef Thalhamer, Arnulf Hartl
BACKGROUND: The specific microclimate of alpine waterfalls with high levels of ionized water aerosols has been suggested to trigger beneficial immunological and psychological effects. In the present three-armed randomized controlled clinical study, we focused on effects on (i) immunological reagibility, on (ii) physiological stress responses, and on (iii) stress-related psychological parameters. METHODS: People with moderate to high stress levels (n = 65) spent an active sojourn with daily hiking tours in the National Park Hohe Tauern (Großkirchheim, Austria)...
January 13, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28086844/are-risk-predicting-models-useful-for-estimating-survival-of-patients-with-rheumatoid-arthritis-associated-interstitial-lung-disease
#16
Hanna M Nurmi, Minna K Purokivi, Miia S Kärkkäinen, Hannu-Pekka Kettunen, Tuomas A Selander, Riitta L Kaarteenaho
BACKGROUND: Risk predicting models have been applied in idiopathic pulmonary fibrosis (IPF), but still not validated in patients with rheumatoid arthritis-associated interstitial lung disease (RA-ILD). The purpose of this study was to test the suitability of three prediction models as well as individual lung function and demographic factors for evaluating the prognosis of RA-ILD patients. METHODS: Clinical and radiological data of 59 RA-ILD patients was re-assessed...
January 13, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28080134/alveolar-epithelial-cell-derived-mediators-potential-direct-regulators-of-large-airway-and-vascular-responses
#17
Elizabeth A Oczypok, Timothy N Perkins, Tim D Oury
Bronchial epithelial cells and pulmonary endothelial cells are thought to be the primary modulators of conducting airways and vessels, respectively. However, histological examination of both mouse and human lung tissue reveals that alveolar epithelial cells (AECs) line the adventitia of large airways and vessels and thus are also in a position to directly regulate these structures. The primary purpose of this perspective is to highlight that AECs coat the adventitial surface of every vessel and airway in the lung parenchyma...
January 12, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28077299/anaplastic-lymphoma-kinase-alk-inhibitors-in-the-treatment-of-alk-driven-lung-cancers
#18
REVIEW
Robert Roskoski
Anaplastic lymphoma kinase is expressed in two-thirds of the anaplastic large-cell lymphomas as an NPM-ALK fusion protein. Physiological ALK is a receptor protein-tyrosine kinase within the insulin receptor superfamily of proteins that participates in nervous system development. The EML4-ALK fusion protein and four other ALK-fusion proteins play a fundamental role in the development in about 5% of non-small cell lung cancers. The amino-terminal portions of the ALK fusion proteins result in dimerization and subsequent activation of the ALK protein kinase domain that plays a key role in the pathogenesis of various tumors...
January 8, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28076986/utilising-exhaled-nitric-oxide-information-to-enhance-diagnosis-and-therapy-of-respiratory-disease-current-evidence-for-clinical-practice-and-proposals-to-improve-the-methodology
#19
Marieann Högman, Lauri Lehtimäki, Anh Tuan Dinh-Xuan
A non-invasive tool to diagnose respiratory diseases and to follow treatment has long been looked-for. Exhaled nitric oxide (NO) is a promising marker of inflammation in asthma but nearly 25-years of research has shown that it works in only certain endotypes of asthma. The modelling of NO dynamics of the lung can give more information than a single FENO value. Areas covered: The estimation of the NO production in the conducting airways and in the gas exchange area has given new insight of the NO production in diseases beyond asthma...
January 11, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28074615/a-database-of-optimized-proteomic-quantitative-methods-for-284-human-drug-disposition-related-proteins-for-applications-in-pbpk-modeling
#20
Marc Vrana, Dale Whittington, Vivek Nautiyal, Bhagwat Prasad
The aim of this study was to create an open access repository of validated LC-MS/MS (MRM) methods for quantifying 284 important proteins associated with drug absorption, distribution, metabolism and excretion (ADME). Various in silico and experimental approaches were used to select surrogate peptides and optimize instrument parameters for LC-MS/MS quantification of the selected proteins. The final methods were uploaded to an online public database (ADME QPrOmics(TM); www.qpromics.uw.edu/qpromics/assay/) which provides essential information for facile method development in triple quadrupole MS instruments...
January 11, 2017: CPT: Pharmacometrics & Systems Pharmacology
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