Abstract:
:Three-day-old rabbits were given intratracheal injections of radiolabeled natural sheep surfactant, rabbit surfactant, or liposomes of dipalmitoylphosphatidylcholine that contained greater than three times the quantity of phosphatidylcholine present in the endogenous surfactant pool. The recoveries of radiolabeled phosphatidylcholine and total phosphatidylcholine in alveolar washes, lung tissue, and total lung (alveolar washes plus lung tissue) were measured for 72 h. Approximately half of the two natural surfactants rapidly became lung tissue associated, and phosphatidylcholine derived from the rabbit surfactant was cleared from the total lung twice as rapidly as was the phosphatidylcholine from sheep surfactant (20.7% versus 10.4% of the amount present at zero time/24 h, p less than .05). The alveolar surfactant pool size did not decrease despite the clearance of the exogenously administered material. The liposomes of dipalmitoylphosphatidylcholine were cleared from the total lung at the same rate as the rabbit surfactant phosphatidylcholine; however, compared to the natural surfactants, much less of this material became lung tissue associated. The administration of the natural rabbit surfactant did not decrease the amount of radiolabeled choline, palmitic acid, or 32P that was incorporated into lung phosphatidylcholine or the amount of labeled phosphatidylcholine that was secreted to the alveoli. However, sheep surfactant increased the percent of radiolabeled phosphatidylcholine recovered by alveolar wash. These experiments document differences in clearance rates, tissue and alveolar association patterns, and subtle effects on endogenous surfactant metabolism for two surfactants and liposomes of dipalmitoylphosphatidylcholine following intratracheal administration. Uniform metabolic responses should not be anticipated following treatments with different surfactant preparations.
journal_name
Exp Lung Resjournal_title
Experimental lung researchauthors
Oguchi K,Ikegami M,Jacobs H,Jobe Adoi
10.3109/01902148509057525subject
Has Abstractpub_date
1985-01-01 00:00:00pages
221-35issue
3-4eissn
0190-2148issn
1521-0499journal_volume
9pub_type
杂志文章abstract::Hypercholesterolemia contributes to cardiovascular diseases, but its direct effect on lung is little known. 3-Hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors (statins) have been shown to exert numerous effects that are dependent and independent of their cholesterol-lowering property. The authors hyp...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902141003739715
更新日期:2010-12-01 00:00:00
abstract::Acute exposure to NO2 is reported to disrupt tight junctions in lung epithelium. We have studied the effects of chronic NO2 exposure and recovery breathing clean air to tight junctions of distal airway and alveolar epithelium. Syrian Golden hamsters were exposed to NO2 (30 PPM) for 5 or 9 months and a group of those a...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148609064295
更新日期:1986-01-01 00:00:00
abstract::Alveolar cells were evaluated in BALB/c mice exposed to smoke from 9 cigarettes per day. The mice were sacrificed at 1, 5, and 10 days and examined by lung morphometry and immunohistochemical staining of alveolar macrophages for tumor necrosis factor (TNF)-alpha, matrix metalloproteinase (MMP)-12, and tissue inhibitor...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140500324828
更新日期:2005-10-01 00:00:00
abstract::We set out to determine whether or not the "mucolytic" drug N-acetylcysteine would speed the reversal of cigarette smoke-induced secretory-cell hyperplasia to normal, similar to that found previously for two nonsteroidal antiinflammatory drugs. Cigarette smoke alone significantly (p less than 0.01) increased the numbe...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148809062848
更新日期:1988-01-01 00:00:00
abstract::Male Sprague-Dawley rats were placed in hypobaric hypoxia for 17-21 d (FIO2 10%) to establish pulmonary hypertension (PH) and control rats were kept in normobaric room air. Right mean atrial and ventricular pressures (PRA, PRV) were recorded, left ventricular (LV) blood was collected, and lungs were perfused with hepa...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149209031681
更新日期:1992-03-01 00:00:00
abstract::Aims:Bronchopulmonary dysplasia (BPD) is characterized by alveolarization arrest. During alveolarization, alveolar myofibroblasts are thought to migrate into the septal tips and elongate secondary septa. Lipopolysaccharide (LPS) exposure has been reported to disrupt directional migration and final location of alveolar...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2019.1711464
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Mechanisms linking behavioral stress and inflammation are poorly understood, mainly in distal lung tissue. OBJECTIVE:We have investigated whether the forced swim stress (FS) could modulate lung tissue mechanics, iNOS, cytokines, oxidative stress activation, eosinophilic recruitment, and remodeling in guinea...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2012.704484
更新日期:2012-09-01 00:00:00
abstract::During lung development, the extracellular matrix undergoes dynamic remodeling. Matrix metalloproteinases (MMPs), and tissue inhibitors of matrix metalloproteinases (TIMPs), are important enzymes that participate in regulating tissue remodeling. There is an abnormal balance of the synthesis and degradation of collagen...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140303783
更新日期:2003-06-01 00:00:00
abstract::The separate effects of positive end-expiratory pressure (PEEP) and intravascular volume administration on the histopathologic lung injury were not investigated in experimental lung injury previously. The authors hypothesized that high PEEP and a restrictive volume therapy would yield the best oxygenation and the leas...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2010.514023
更新日期:2011-02-01 00:00:00
abstract::The effects of urban air and diesel particles on inflammatory cytokine gene expression, tumor necrosis factor alpha (TNF-alpha) in particular, were studied in rat alveolar macrophages. TNF-alpha, interleukin (IL)-1, IL-6, cytokine-induced neutrophil chemoattractant (CINC), and macrophage inflammatory protein (MIP)-2 g...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149609046043
更新日期:1996-09-01 00:00:00
abstract::Electrical stimulation of the cervical vagus nerve of rats is known to increase vascular permeability in the trachea. In the present study, we sought to further characterize this neurogenic inflammatory response by defining the relationship between the parameters of electrical stimulation of the vagus nerve and the ma...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148809087842
更新日期:1988-01-01 00:00:00
abstract::Lung disorders such as asthma, acute respiratory distress syndrome (ARDS), chronic obstructive lung disease (COPD), and interstitial lung disease (ILD) show a few common threads of pathogenic mechanisms: inflammation, aberrant immune activity, infection, and fibrosis. Currently no modes of effective treatment are avai...
journal_title:Experimental lung research
pub_type: 杂志文章,评审
doi:10.3109/01902148.2013.816803
更新日期:2013-10-01 00:00:00
abstract::Inflammation plays a key role in lung injury and in the pathogenesis of asthma. Two murine models of allergic airway inflammation-sensitization and challenge to ovalbumin (OVA) and intratracheal exposure to interleukin-13 (IL13)-were used to evaluate the expression of poly(ADP-ribose) polymerase-1 (PARP-1) in allergic...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902141003663360
更新日期:2010-09-01 00:00:00
abstract::In vitro observations of fetal lung maturation are complicated by continued epithelial cell maturation in culture. Removal of trace quantities of cortisol from the culture system has been reported elsewhere by Torday to prevent epithelial cell differentiation, but also prevent cell growth. In this report we have devel...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148309061503
更新日期:1983-07-01 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::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::CTP:cholinephosphate cytidylyltransferase (CT) is a key enzyme required for surfactant phosphatidylcholine synthesis, and its activity is regulated by lung lipids. This study evaluated the effect of epidermal growth factor (EGF) on the phospholipid content and the expression of CT in the lung following direct in vivo ...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149409064369
更新日期:1994-01-01 00:00:00
abstract::The synthesis of proteoglycans by primary cultures of 19-day gestation fetal rat lung Type II pneumonocytes was studied. The cells were grown in the presence of [3H]-glucosamine and/or [35S]-Na2SO4 and the radioactive label incorporated into proteoglycans was analyzed. Proteoglycans of high molecular weight (approxima...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148709064304
更新日期:1987-01-01 00:00:00
abstract::This study evaluated polymorphonuclear leukocyte (PMN) involvement in translocation of dust to bronchial lymph nodes after deposition of dust in the lungs of control and neutropenic F344/N rats. Rats were rendered neutropenic with an intraperitoneal (IP) injection of anti-rat PMN antiserum (APA); control rats were inj...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149709046048
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Asthma is a chronic inflammatory disease of the airway that is mediated by T-helper 2(TH2) cells. Thymic stromal lymphopoietin (TSLP) can aggravate asthmatic lung inflammation by activating dendritic cells (DCs) to promote TH2 differentiation. TSLP promoter polymorphisms are associated with susceptibility to...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902148.2012.714840
更新日期:2012-10-01 00:00:00
abstract::In a number of recent studies, a lung tumor resistance locus designated either Par2 or Pas7 was mapped to distal chromosome 18 in crosses between susceptible A/J and more resistant BALB/c mice. This locus is important in that it accounts for as much as 60% of the difference in lung tumor susceptibility between the A/J...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140150216710
更新日期:2000-12-01 00:00:00
abstract::A deletional analysis of the SP-A1 promoter in NCI-H441 cells was performed to identify potential cis-acting elements involved in phorbol ester-mediated repression of human SP-A transcription. The phorbol ester TPA reduced SP-A1 and SP-A2 promoter activity to approximately 35% to 45% compared to that of control cells....
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/019021400408272
更新日期:2000-07-01 00:00:00
abstract::A number of novel chemotactic cytokines are becoming increasingly recognized as important participants in the elicitation of specific inflammatory cells from the peripheral blood to sites of inflammation. Recent observations have now demonstrated that certain chemotactic cytokines possess specificity for the selected ...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149109063278
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Inflammation is believed to play a key role in the pathophysiology of meconium aspiration syndrome (MAS). PURPOSE OF THE STUDY:The objective was to determine whether the recombinant human Erythropoietin (rhEPO) pretreatment could attenuate meconium-induced inflammation. MATERIALS AND METHODS:In this study,...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902148.2016.1190424
更新日期:2016-05-01 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::The effects of Zizyphi fructus, a major constituent of Chinese anti-asthmatic herbal medicine, on ciliary motility and nitric oxide (NO) generation in canine cultured tracheal epithelium were studied by the microphoto-oscillation method and the specific amperometric method, respectively. Addition of Zizyphi fructus at...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.3109/01902149609031774
更新日期:1996-05-01 00:00:00
abstract::Few studies are available about the role of dietary zinc (Zn) in respiratory diseases. Adult male rats were divided into 2 groups and fed respectively a moderate Zn-deficient diet and a Zn-adequate control diet. In lung tissue at 2 months, thiobarbituric acid-reactive species (TBARS), total glutathione, glutathione di...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140303776
更新日期:2003-10-01 00:00:00
abstract::Tracheal occlusion (TO) performed surgically in utero near the end of gestation causes a rapid increase in the distension of future airspaces, resulting in accelerated lung development. The authors hypothesize that TO stimulates microvascular growth concomitant with a rapid increase in the expression of genes implicat...
journal_title:Experimental lung research
pub_type: 杂志文章
doi:10.1080/01902140701884331
更新日期:2008-03-01 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