abstract：:The purpose of this study was to examine the relationship between hyperpnea-induced mucosal injury, bronchovascular hyperpermeability, and airway reactivity. Hyperpnea-induced bronchoconstriction was assessed by measuring peripheral airway resistance (Rp) in anesthetized mechanically ventilated male mongrel dogs. Eith...

journal_title：American journal of respiratory cell and molecular biology

authors： Freed AN,Omori C,Schofield BH,Mitzner W

更新日期：1994-12-01 00:00:00

abstract：:The effect of human recombinant stem cell factor (SCF) on inflammatory mediator release and smooth muscle contraction was evaluated in human isolated intralobar bronchi. Bronchi from 21 of 26 donors contracted in response to SCF. The threshold concentration was approximately 0.01 micrograms/ml. At 1 micrograms/ml, the...

journal_title：American journal of respiratory cell and molecular biology

authors： Undem BJ,Lichtenstein LM,Hubbard WC,Meeker S,Ellis JL

更新日期：1994-12-01 00:00:00

abstract：:To assess the temporal and spatial expression of the matrix-associated proteoglycan, biglycan, in a model of chronic hyperoxia-induced lung injury, changes in mRNA and protein were examined using Northern blot analyses and immunohistochemistry. Newborn rats were exposed to 85% or 100% oxygen for 6 and 4 wk, respective...

journal_title：American journal of respiratory cell and molecular biology

authors： Veness-Meehan KA,Rhodes DN,Stiles AD

更新日期：1994-11-01 00:00:00

abstract：:We hypothesized that, as in animal models, localized deposition of antigen into the human lung would induce local inflammatory and immune responses in antigen-exposed sites. To test this hypothesis, segmental instillation of a well-characterized, highly immunogenic, soluble antigen, keyhole limpet hemocyanin (KLH) was...

journal_title：American journal of respiratory cell and molecular biology

authors： Weissman DN,Bice DE,Crowell RE,Schuyler MR

更新日期：1994-11-01 00:00:00

abstract：:Alveolar type II cells produce pulmonary surfactant and serve as the stem cell of the alveolar epithelium by proliferating and transforming into type I cells. The study of the differentiated function and proliferative capacity of type II cells in response to injury in vivo has been hindered by the complexity of the sy...

journal_title：American journal of respiratory cell and molecular biology

authors： Kinnard WV,Tuder R,Papst P,Fisher JH

更新日期：1994-10-01 00:00:00

abstract：:Human bronchoalveolar lavage (BAL) has been described to contain, besides a large number of alveolar macrophages (AM) (approximately 95%), small numbers of monocyte-like cells (approximately 2%) and dendritic cells (DC) (approximately 0.4%). To separate AM (high autofluorescence) from DC, we used a fluorescence activa...

journal_title：American journal of respiratory cell and molecular biology

authors： van Haarst JM,Hoogsteden HC,de Wit HJ,Verhoeven GT,Havenith CE,Drexhage HA

更新日期：1994-09-01 00:00:00

abstract：:Platelet-activating factor (PAF), a proinflammatory lipid mediator, is a potent airway mucin secretagogue. This study assessed the role of protein kinase C (PKC) in PAF-induced mucin release from primary cultures of feline tracheal epithelial cells (FTEC). Mucin secretion was quantitated by enzyme-linked immunosorbent...

journal_title：American journal of respiratory cell and molecular biology

authors： Larivée P,Levine SJ,Martinez A,Wu T,Logun C,Shelhamer JH

更新日期：1994-08-01 00:00:00

abstract：:Distribution of actin and fodrin, a nonerythroid analogue of spectrin, was studied in cytocentrifuge preparations and in tissue sections of normal and pathologic respiratory epithelium by using immunofluorescence and immunoelectron microscopy. In ciliated epithelial cells and in goblet cells of normal bronchial epithe...

journal_title：American journal of respiratory cell and molecular biology

authors： Sormunen R,Pääkkö P,Palovuori R,Soini Y,Lehto VP

更新日期：1994-07-01 00:00:00

abstract：:The expression of bombesin-like peptides (BLPs) by pulmonary neuroendocrine cells is transiently upregulated during lung development. A functional role for BLPs is supported by their ability to stimulate lung growth and maturation both in vitro and in vivo during the late stages of lung development. In addition, the c...

journal_title：American journal of respiratory cell and molecular biology

authors： Aguayo SM,Schuyler WE,Murtagh JJ Jr,Roman J

更新日期：1994-06-01 00:00:00

abstract：:We examined the contribution of the leukocyte function-associated antigen (LFA-1) in a murine model of lung inflammation determined by exposure to the thermophilic actinomycete Faeni rectivirgula. The exposure generated a large influx of cells in the bronchoalveolar space and in the lung parenchyma, as seen from enhan...

journal_title：American journal of respiratory cell and molecular biology

authors： Denis M,Bisson D

更新日期：1994-05-01 00:00:00

abstract：:We examined the effects of extracellular ATP on the proliferation and synthesis of DNA by guinea pig alveolar macrophages (AM). AM proliferated spontaneously in vitro, their number doubling in 72 h. Such proliferation was completely inhibited by adding 1 mM ATP to the culture. The inhibition was dose dependent. ATP al...

journal_title：American journal of respiratory cell and molecular biology

authors： Nakanishi M,Kawasaki M,Ogino H,Yoshida M,Yagawa K

更新日期：1994-05-01 00:00:00

abstract：:Pulmonary carbonic anhydrase (CA) activity plays important roles in carbon dioxide exchange, fluid secretion, and pH regulation. This study reports the use of molecular and immunologic techniques to characterize expression of the high-activity cytosolic isoenzyme CA II in rat lung tissue. Northern blot analysis of RNA...

journal_title：American journal of respiratory cell and molecular biology

authors： Fleming RE,Moxley MA,Waheed A,Crouch EC,Sly WS,Longmore WJ

更新日期：1994-05-01 00:00:00

abstract：:Latent cytomegalovirus (CMV) infection is often reactivated in the lung. We postulated that this reactivation could occur by stimulation of the CMV major immediate early (IE) promoter by other viruses that infect the lung. The specific aim of this study was to investigate whether adenovirus early proteins could stimul...

journal_title：American journal of respiratory cell and molecular biology

authors： Metcalf JP,Monick MM,Stinski MF,Hunninghake GW

更新日期：1994-04-01 00:00:00

abstract：:Integrins are heterodimeric cell-surface glycoproteins that mediate cell-cell and cell-matrix adhesion. We previously identified cDNA encoding a novel integrin beta subunit, beta 7, from bronchoalveolar lavage fluid (BALF) leukocytes. The beta 7 subunit protein is now known to associate with at least two integrin alph...

journal_title：American journal of respiratory cell and molecular biology

authors： Erle DJ,Brown T,Christian D,Aris R

更新日期：1994-03-01 00:00:00

abstract：:We investigated the effects of cultured epithelial cells and supernatants on resting membrane potential and excitatory neuroeffector transmission in smooth muscle cells of dog trachea and bronchioles. The mean resting membrane potential of the mucosa-free tracheal smooth muscle cells was -59.5 +/- 1.5 mV (+/- SD). App...

journal_title：American journal of respiratory cell and molecular biology

authors： Matsumoto K,Aizawa H,Inoue R,Hamano S,Ikeda S,Xie Z,Hirata M,Hara N,Ito Y

更新日期：1994-03-01 00:00:00

abstract：:Using a rat model of acute lung inflammation induced by intratracheal instillation of lipopolysaccharide (LPS), we investigated the kinetics of mRNA expression and the potential cellular sources of tumor necrosis factor-alpha (TNF-alpha), macrophage inflammatory protein-2 (MIP-2), interleukin (IL)-1 beta, IL-6, RANTES...

journal_title：American journal of respiratory cell and molecular biology

authors： Xing Z,Jordana M,Kirpalani H,Driscoll KE,Schall TJ,Gauldie J

更新日期：1994-02-01 00:00:00

abstract：:Glucocorticoids increase surfactant phosphatidylcholine synthesis, in part, by stimulating the rate regulatory enzyme CTP:cholinephosphate cytidylyltransferase. This enzyme exists in mammalian lung cytosol as an active lipoprotein form (H-form) and an inactive apoprotein (L-form) species. We administered betamethasone...

journal_title：American journal of respiratory cell and molecular biology

authors： Mallampalli RK,Walter ME,Peterson MW,Hunninghake GW

更新日期：1994-01-01 00:00:00

abstract：:To evaluate the response of an epithelial barrier to a moderate but sustained oxidative stress, we cultured monolayers of Madin Darby canine kidney cells on microporous filters and exposed them to the hypoxanthine-xanthine oxidase (HX-XO) reaction. The transepithelial permeability coefficient for mannitol (Pm) was ass...

journal_title：American journal of respiratory cell and molecular biology

authors： Rochat T,Burkhard C,Finci-Cerkez V,Meda P

更新日期：1993-11-01 00:00:00

abstract：:Morphologic changes are reported to occur in rat lung vasculature after 3 days of hypoxia. We have previously shown that immunoreactivity for the vasodilator calcitonin gene-related peptide (CGRP) is increased in pulmonary endocrine cells by 7 days of hypoxia. Because these cells may be among the earliest mediators of...

journal_title：American journal of respiratory cell and molecular biology

authors： Roncalli M,Springall DR,Maggioni M,Moradoghli-Haftvani A,Winter RJ,Zhao L,Coggi G,Polak JM

更新日期：1993-11-01 00:00:00

abstract：:The present study utilized the monocrotaline (MCT) model of pulmonary hypertension in rats to examine temporal alterations in steady-state levels of basement membrane (BM) component mRNA and deposition of protein using Northern analysis and immunohistochemistry, respectively. MCT (60 mg/kg, subcutaneous) produced sust...

journal_title：American journal of respiratory cell and molecular biology

authors： Lipke DW,Arcot SS,Gillespie MN,Olson JW

更新日期：1993-10-01 00:00:00

abstract：:Cystic fibrosis (CF) is characterized by a dramatic neutrophil recruitment and repeated Pseudomonas infections in the lungs. To evaluate cytokine releasibility by airway epithelial cells in the context of CF, we studied primary nasal epithelial cells isolated from the upper airways and continuous epithelial cell lines...

journal_title：American journal of respiratory cell and molecular biology

authors： Bédard M,McClure CD,Schiller NL,Francoeur C,Cantin A,Denis M

更新日期：1993-10-01 00:00:00

abstract：:Severe deterioration of surfactant function is noted under conditions of plasma protein leakage into the alveolar space; moreover, fibrinogen has previously been reported to possess strong surfactant inhibitory capacity. Dissolution of alveolar deposits of fibrinogen and fibrin (e.g., hyaline membranes) requires enzym...

journal_title：American journal of respiratory cell and molecular biology

authors： Seeger W,Grube C,Günther A

更新日期：1993-09-01 00:00:00

abstract：:We compared the chemical composition of salivary mucin glycopeptides from cystic fibrosis (CF) and from non-CF subjects and the adhesion of Pseudomonas aeruginosa to these different salivary glycopeptides. Three pools of CF saliva, four pools of non-CF saliva, one individual CF saliva, and one individual non-CF saliva...

journal_title：American journal of respiratory cell and molecular biology

authors： Carnoy C,Ramphal R,Scharfman A,Lo-Guidice JM,Houdret N,Klein A,Galabert C,Lamblin G,Roussel P

更新日期：1993-09-01 00:00:00

abstract：:Previous studies have shown that polymorphonuclear leukocytes (PMN) are delayed in the pulmonary capillaries by the presence of cigarette smoke. To determine if the PMN delayed by smoking are activated, we estimated the in vivo expression of CD11/CD18 and L-selectin on the surface of PMN in lungs and peripheral blood ...

journal_title：American journal of respiratory cell and molecular biology

authors： Klut ME,Doerschuk CM,Van Eeden SF,Burns AR,Hogg JC

更新日期：1993-07-01 00:00:00

abstract：:Lung structure undergoes rapid remodeling during late gestation as a functional respiratory unit is formed. To determine the role of collagen turnover in this process, particularly the basement membrane component, we studied the degradation of collagen in a series of fetal rats from day 18 of gestation to full term. D...

journal_title：American journal of respiratory cell and molecular biology

authors： Arden MG,Spearman MA,Adamson IY

更新日期：1993-07-01 00:00:00

abstract：:After localized lung immunization and challenge, antigen-specific antibody continues to be produced in the immunized lung lobes of dogs for years after the last antigen exposure. Lavage fluid from immunized lung lobes contains significantly more antigen-specific antibody than lavage fluid from control lung lobes, and ...

journal_title：American journal of respiratory cell and molecular biology

authors： Bice DE,Jones SE,Muggenburg BA

更新日期：1993-06-01 00:00:00

abstract：:Lung fibrosis has been postulated to be mediated by the production of macrophage-derived growth factors that are both mitogenic and chemotactic for fibroblasts. In vitro studies from our laboratory demonstrated that alveolar and interstitial macrophages treated with iron and asbestos release platelet-derived growth fa...

journal_title：American journal of respiratory cell and molecular biology

authors： Osornio-Vargas AR,Kalter VG,Badgett A,Hernández-Rodríguez N,Aguilar-Delfín I,Brody AR

更新日期：1993-05-01 00:00:00

abstract：:The role of pro-inflammatory cytokines in an animal model of allergic lung disease was examined by use of an interleukin-1 receptor antagonist (IL-1ra) and a specific bioassay for tumor necrosis factor (TNF). Ovalbumin-sensitized guinea pigs exhibit a marked bronchial hyperreactivity (assessed by airway responsiveness...

journal_title：American journal of respiratory cell and molecular biology

authors： Watson ML,Smith D,Bourne AD,Thompson RC,Westwick J

更新日期：1993-04-01 00:00:00

abstract：:Macrophage inflammatory proteins 1 alpha and 2 (MIP-1 alpha, MIP-2) are members of a growing family of cytokines thought to play a role in host defense. MIP-1 alpha and MIP-2 were previously identified in the mouse and shown to stimulate inflammatory cell recruitment. To better understand the potential role of MIP-1 a...

journal_title：American journal of respiratory cell and molecular biology

authors： Driscoll KE,Hassenbein DG,Carter J,Poynter J,Asquith TN,Grant RA,Whitten J,Purdon MP,Takigiku R

更新日期：1993-03-01 00:00:00

abstract：:In the present study, splenic dendritic cells (DC) and alveolar macrophages (AM) were pulsed with antigen in vitro and subsequently intratracheally instilled to test whether these cells have the capacity to sensitize T cells in the draining lymph nodes of the lung. The data demonstrate that antigen-pulsed DC, instille...

journal_title：American journal of respiratory cell and molecular biology

authors： Havenith CE,Breedijk AJ,Betjes MG,Calame W,Beelen RH,Hoefsmit EC

更新日期：1993-03-01 00:00:00

abstract：:Polymorphonuclear leukocytes (PMN) contribute to epithelial injury at sites of inflammation, but their mechanisms of action are incompletely understood. PMN can injure target tissues by oxidative and nonoxidative mechanisms. Included in the nonoxidative mechanisms are defensins (DEF), small (3.5 to 4.0 kD), arginine- ...

journal_title：American journal of respiratory cell and molecular biology

authors： Nygaard SD,Ganz T,Peterson MW

更新日期：1993-02-01 00:00:00

abstract：:Stimulated migration of eosinophils out of the bloodstream and into the lung is key in the development of tissue eosinophilia and inflammation in asthma. Platelet-activating factor (PAF) has been implicated as an important inflammatory mediator in asthma pathogenesis in part because of its chemotactic capacity. We the...

journal_title：American journal of respiratory cell and molecular biology

authors： Casale TB,Erger RA,Little MM

更新日期：1993-01-01 00:00:00

abstract：:Recent evidence suggests that tyrosine kinases play an important role in signal transduction mechanisms utilized by a range of different agonists in many cell types. We have investigated the effects of four different inhibitors of tyrosine kinases on IgE-dependent histamine release from human lung mast cells and basop...

journal_title：American journal of respiratory cell and molecular biology

authors： Lavens SE,Peachell PT,Warner JA

更新日期：1992-12-01 00:00:00

abstract：:In the current study, we describe cytokine and Escherichia coli lipopolysaccharide (LPS) induction of nitric oxide (NO) synthase mRNA levels in cultured smooth muscle from rat pulmonary artery (RPASM). Exposure of RPASM to interleukin-1 beta, interferon-gamma, or LPS alone did not significantly affect NO synthesis, as...

journal_title：American journal of respiratory cell and molecular biology

authors： Nakayama DK,Geller DA,Lowenstein CJ,Chern HD,Davies P,Pitt BR,Simmons RL,Billiar TR

更新日期：1992-11-01 00:00:00

abstract：:Oxygen-mediated lung injury can stimulate a fibroproliferative response resulting in the alteration of the pulmonary extracellular matrix and subsequent scarring of parenchymal tissue. Fibronectin (FN), a component of the extracellular matrix, appears in increased quantities in fibrotic lung disease. Alveolar macropha...

journal_title：American journal of respiratory cell and molecular biology

authors： Sinkin RA,LoMonaco MB,Finkelstein JN,Watkins RH,Cox C,Horowitz S

更新日期：1992-11-01 00:00:00

abstract：:A number of mechanisms participate in virus-induced asthma. Previously, we described enhanced basophil histamine release (HR) during an experimentally induced rhinovirus infection and after in vitro incubation of peripheral blood mononuclear cells (PBMC) with influenza virus. This study extends our previous observatio...

journal_title：American journal of respiratory cell and molecular biology

authors： Huftel MA,Swensen CA,Borcherding WR,Dick EC,Hong R,Kita H,Gleich GJ,Busse WW

更新日期：1992-10-01 00:00:00

abstract：:The mesothelium contains both procoagulant and fibrinolytic activities. An imbalance between these activities could account for the abnormal fibrin turnover and pleural fibrin deposition that is characteristic of pleural inflammation. Procoagulant activity of human pleural mesothelial cells (HPMC) is in part due to ti...

journal_title：American journal of respiratory cell and molecular biology

authors： Idell S,Zwieb C,Kumar A,Koenig KB,Johnson AR

更新日期：1992-10-01 00:00:00

abstract：:Tumor necrosis factor-alpha (TNF), interleukin-1 beta (IL-1), interleukin-6 (IL-6), and interleukin-8 (IL-8) are inflammatory cytokines produced by alveolar macrophages (AMs) and implicated in sepsis-related adult respiratory distress syndrome (ARDS). Preliminary findings from clinical trials suggest that aerosolized ...

journal_title：American journal of respiratory cell and molecular biology

authors： Thomassen MJ,Meeker DP,Antal JM,Connors MJ,Wiedemann HP

更新日期：1992-09-01 00:00:00

abstract：:The growth factors that operate while the lung remodels in hyperoxia are not known. At the lung periphery, high oxygen levels cause cell hypertrophy and hyperplasia, and this results in a thickening of the alveolar-capillary membrane and the walls of its associated microvessels. The present study examines gene express...

journal_title：American journal of respiratory cell and molecular biology

authors： Powell PP,Wang CC,Jones R

更新日期：1992-09-01 00:00:00

abstract：:A number of metalloproteinases that degrade the extracellular matrix of connective tissues and two specific tissue inhibitors of metalloproteinases (TIMPs) have now been isolated, characterized, and cloned. Comparison of the enzyme sequences has allowed the delineation of domain structures, and initial studies have be...

journal_title：American journal of respiratory cell and molecular biology

authors： Murphy G,Docherty AJ

更新日期：1992-08-01 00:00:00