Abstract:
:Paraquat accumulation into rat lung slices was unaffected by hypoxia (PO2 = 645 mm Hg) but was inhibited by hypoxia. The IC50 (IC50 = partial pressure of O2 resulting in a 50% inhibition of paraquat accumulation) for paraquat accumulation was P02 = 50 mm Hg; significant accumulation could be observed after 1 or 2 hr of incubation at PO2 = 10 mm Hg. The hypoxic inhibition was due to oxygen limitation of the accumulation mechanism and not to a diffusion limitation of oxygen or to cell death. Incubation of lung slices for up to 2 hr in 100% N2 (PO2 = 0 mm Hg) did not decrease paraquat accumulation or metabolism of glucose to CO2 when the slices were returned to room air. However, under the same conditions total tissue oxygen consumption was decreased by 50%. Paraquat accumulation and glucose metabolism are oxygen dependent but are resistant to the damaging effects of cellular anoxia.
journal_name
Exp Lung Resjournal_title
Experimental lung researchauthors
Montgomery MR,Wyatt I,Smith LLdoi
10.3109/01902148009065463subject
Has Abstractpub_date
1980-08-01 00:00:00pages
239-50issue
3eissn
0190-2148issn
1521-0499journal_volume
1pub_type
杂志文章abstract::We investigated the distribution of adrenergic receptors in ferret trachea using autoradiography. [3H]Dihydroalprenolol, used to identify beta-adrenoceptors, revealed a high density of specific binding sites over surface epithelium and submucosal glands, with less labelling of smooth muscle. [3H]prazosin labelling sho...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148309061513
更新日期:1983-11-01 00:00:00
abstract::Hypothyroid adult rats were injected intravenously with [3, 5, 3'-125I]triiodothyronine (T3) or [125I]thyroxine (T4). Others were similarly treated except for the addition of a 500-fold excess of the appropriate unlabeled hormone. Light microscopic autoradiography of semithin sections of lung from these animals demons...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148309061510
更新日期:1983-09-01 00:00:00
abstract::To study the pattern of lymphokines in bleomycin-induced lung injury, T cells were isolated from lung interstitial tissue (LIL), peribronchial lymphatic tissue (PBLT), and bronchoalveolar lavage (BAL) fluid of bleomycin-"sensitive" C57Bl/6 and bleomycin-"resistant" BALB/c mice at 3, 6, and 14 days following intratrach...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/019021400750048072
更新日期:2000-10-01 00:00:00
abstract::This report describes the protocol for the strain A mouse lung tumor bioassay and summarizes results on selected chemicals that have been tested for carcinogenicity in the assay. The assay is of 6 months duration and can distinguish 2-fold differences in carcinogenic potential of compounds from several chemical classe...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149109064428
更新日期:1991-03-01 00:00:00
abstract:AIMS:As a transcription factor of the nuclear receptor superfamily, neuron-derived orphan receptor 1 (NOR1) is induced rapidly in response to various extracellular stimuli. But, it is still unclear its role in pulmonary artery smooth muscle cells proliferation. MATERIALS AND METHODS:Human PASMCs were cultured in vitro...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2014.993776
更新日期:2015-05-01 00:00:00
abstract:PURPOSE:As an angiotensin converting enzyme (ACE) inhibitor, the effects of captopril on inflammation has been previously examined. Captopril has been shown to have anti-inflammatory and antioxidant effects. Imbalance in the oxidant/antioxidant system is one of the major causes of inflammation. In the present study, th...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2018.1473530
更新日期:2018-01-01 00:00:00
abstract::Both hyperoxia-induced proapoptotic sensitization of alveolar type II cells (TII cells) and high-stretch mechanical ventilation induced pulmonary inflammation are tumor necrosis factor alpha (TNFalpha) mediated. Therefore, binding of free TNFalpha should protect from TNFalpha-mediated acute lung injury and ameliorate ...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902140902887430
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:This study aimed to develop and evaluate an adaptive control system for volume-controlled ventilation (VCV) in small animals to guarantee accurate delivery of tidal volume (VT) in the presence of changes in lung mechanics. METHODS:The adaptive control system to control the Harvard Inspira ventilator was des...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2014.900156
更新日期:2014-04-01 00:00:00
abstract::Suboptimal intake of dietary zinc (Zn) is one of the most common nutritional problems worldwide. Previously, the authors have shown that zinc deficiency (ZD) produces oxidative and nitrosative stress in lung of male rats. The goal of this study is to test the effect of moderate ZD on insulin-like growth factor (IGF)-1...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902140903061787
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:Inhaled capsaicin (8-methyl-N-vanillyl-6-nonenamide) has been used to induce cough in a safe and dose-dependent manner. Chronic cough is associated with an increased sensitivity to inhaled capsaicin in patients with asthma. The aim of this study was to evaluate clinical impact of capsaicin provocation test f...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2020.1834016
更新日期:2021-02-01 00:00:00
abstract::Salvianolic acid B (Sal B), one of the major water-soluble compounds of Danshen (a popular Chinese herb), possesses many of the biological activities, such as antifibrogenic effect in liver and renal diseases. Transforming growth factor-β1 (TGF-β1) plays a central role in the development of pulmonary fibrosis by stimu...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2014.895070
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:Hypoperfusion of the pulmonary vascular bed under the condition of congenital cardiac malformations may lead to progressive pulmonary vascular disease. To improve the mechanistic understanding of this disease, we examined the biochemical and morphological changes of the lung in a relevant animal model and pr...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2012.708385
更新日期:2012-09-01 00:00:00
abstract::The production of reactive oxygen species (ROS) during hyperoxia contribute to alveolar epithelial apoptosis. In the present study, the molecular mechanisms of oxidative stress-induced alveolar epithelial cell apoptosis were investigated. The cytoprotective effects of N-acetylcysteine (NAC) were evaluated. Treatments ...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902141003678582
更新日期:2010-08-01 00:00:00
abstract::The streptozotocin-induced diabetic (STZ-DB) rat model is associated with fetal hyperglycemia, but with low to normal plasma insulin concentration. Because surfactant protein (SP) mRNA content in fetal rat lung is decreased in STZ-DB pregnancy, we investigated the effect of increasing concentrations of glucose on SP g...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/019021499270439
更新日期:1999-01-01 00:00:00
abstract::Aberrant expression of key cell cycle regulatory genes is essential for the immortalization and transformation of cells in vitro. We examined 20 mouse lung epithelial cell lines (2 nontumorigenic, 5 nonmetastatic, and 13 metastatic) for mutations or alterations in the expression of key components of the Rb pathway (pR...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/019021401300054064
更新日期:2001-04-01 00:00:00
abstract::Diesel exhaust particles (DEP) are associated with respiratory disease and exposure to diesel exhaust induces an inflammatory response associated with marked leukocytic infiltration in the lung. This study examined whether neutrophils are activated by the active component of DEP (methanol extract of DEP [me-DEP]). The...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140601047641
更新日期:2006-10-01 00:00:00
abstract::Angiotensin-converting enzyme (ACE) generates angiotensin II and degrades bradykinin. This ectopeptidase acts as a marker in pathologic conditions, showing tissue and vascular damage. In order to evaluate serum and tissue ACE activity in bleomycin-associated lung damage, the authors studied morphological and enzymatic...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140490266556
更新日期:2004-03-01 00:00:00
abstract::Lung cancer, specifically non-small cell lung cancer (NSCLC), is a leading cause of mortality worldwide. In China, a dramatic increase in the incidence of NSCLC is expected in the next 20 years (Molina et al. Mayo Clin Proc. 2008;83:584–594). Mutated epidermal growth factor receptor (EGFR) status is a known predictor ...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2010.482176
更新日期:2010-11-01 00:00:00
abstract::Wild-type K-ras is tumor suppressive in mouse lung, but mutant K-ras is actively oncogenic. Thus, the mutant protein must acquire new, dominant protumorigenic properties. Generation of reactive oxygen species could be one such property. The authors demonstrate increased peroxides in lung epithelial cells (E10)-transfe...
journal_title:Experimental lung research
pub_type: 杂志文章,评审
doi:10.1080/01902140490495048
更新日期:2005-01-01 00:00:00
abstract:AIM OF THE STUDY:The current investigation was taken to scrutinize the action of tranilast on the airway remodeling in chronic asthma in mice. MATERIALS AND METHODS:Intraperitoneal injection of ovalbumin was applied to mice for sensitization and subsequent inhalation of 1% ovalbumin three times week for 10 weeks for c...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2016.1207727
更新日期:2016-08-01 00:00:00
abstract::Emerging data indicate that endothelial-mesenchymal transition (EndMT) is involved in the pathogenesis of idiopathic pulmonary fibrosis (IPF). A previous study noted that blocking the activity of protein phosphatase 2 A (PP2A) could attenuate EndMT. However, the treatment effects of PP2A inhibitors in pulmonary fibros...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2020.1774823
更新日期:2020-09-01 00:00:00
abstract::This study investigated whether interleukin-1 (IL-1) inhibitory activity in LPS-stimulated culture supernatants of alveolar macrophages and epithelioid cells obtained from rabbit lung granulomas induced by complete Freund's adjuvant (CFA) was identical to IL-1 receptor antagonist (IL-1ra) and examined the changes of I...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149509068834
更新日期:1995-03-01 00:00:00
abstract::Lung injury and inflammation are associated with exposure to various types of particulate air pollutants. The present study was used to determine whether metalloproteinases (MMPs) are secreted after instilling dust samples into the lung, and to relate levels of specific MMPs to different fractions of the ambient air p...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140303753
更新日期:2003-09-01 00:00:00
abstract::Direct measurements of pleural fluid hydrostatic and colloid osmotic pressures after infusion of saline, bovine serum albumin, or silicone into the pleural space were coupled with ultrastructural morphometric analyses to assess the response of pleural mesothelial cells to hydrothorax. Increases of hydrostatic pressure...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149309064347
更新日期:1993-05-01 00:00:00
abstract::Thrombin activates protease-activated receptor (PAR)-1 and induces a myofibroblast phenotype in normal lung fibroblasts. The origins of myofibroblasts are resident fibroblasts, fibrocytes, and epithelial-mesenchymal transition (EMT). We investigated the effects of thrombin, an important mediator of interstitial lung f...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2013.820809
更新日期:2013-10-01 00:00:00
abstract::It was hypothesized that IL-8, a neutrophil chemotaxin, contributes to the influx of neutrophils into the pleural cavity of patients with pleural effusions. Pleural fluids were collected from 57 patients including 13 with effusions due to congestive heart failure, 28 with pleural involvement by carcinoma, 5 with empye...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149309031730
更新日期:1993-09-01 00:00:00
abstract::In three experiments, we have explored the uptake and transport of colloidal gold (Au) and iron oxide (Fe2O3) by normal and SO2-injured bronchial epithelium. In the first experiment, mice were exposed to a 2-hr aerosol of Au; in the second experiment, mice were exposed to SO2 (250 ppm) for 3 hr, then to Au; and in the...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148009057514
更新日期:1980-03-01 00:00:00
abstract::Silicosis is a serious occupational disease characterized by lung fibrosis that is caused by long-term inhalation of silica-containing fine particles. Lysophosphatidic acid (LPA) and LPA1/3 plays a role in lung fibrosis. Until recently, there has been little research investigating the role of LPA and LPA receptors (LP...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2014.920438
更新日期:2014-09-01 00:00:00
abstract::The authors recently showed that preterm birth per se, in the absence of assisted ventilation or elevated inhaled oxygen levels, alters the structure of the airway walls in young lambs. The initial aim of the present study was to determine whether these changes persist into adulthood. Preterm (P; n = 7) lambs were del...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140701807720
更新日期:2008-02-01 00:00:00
abstract::Biochemical characterization of human respiratory mucus has generally utilized expectorated specimens. In order to exclude extraneous contaminants in the analysis of airway glycoproteins, human airways were cultured and the mucous glycoprotein released into the supernatant analyzed. By incorporating 3H-labeled glucosa...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148409069675
更新日期:1984-01-01 00:00:00