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metaplasia/protease

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Alpha 1-protease inhibitor moderates human neutrophil elastase-induced emphysema and secretory cell metaplasia in hamsters.

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A study was undertaken to determine whether emphysema and airway secretory cell metaplasia, induced in hamsters by intratracheal treatment with human neutrophil elastase (HNE), could be moderated by pretreatment with human alpha 1-protease inhibitor (API). API (4.9 mg) was given intratracheally to
Studies were undertaken to evaluate the in vitro properties of recombinant human secretory leukocyte-protease inhibitor (rSLPI) that had been made in Escherichia coli in an inactive form and refolded, and to determine whether emphysema and bronchial secretory cell metaplasia, induced in hamsters by

Serine protease inhibitor A3K suppressed the formation of ocular surface squamous metaplasia in a mouse model of experimental dry eye.

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OBJECTIVE To investigate the effects and possible mechanisms of serine protease inhibitor A3K (SERPINA3K) on the formation of ocular surface squamous metaplasia in a mouse dry eye model induced by topical benzalkonium chloride (BAC). METHODS The eye drops containing SERPINA3K were topically

Irreversible bronchial goblet cell metaplasia in hamsters with elastase-induced panacinar emphysema.

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A single intratracheal instillation of pancreatic elastase in hamsters induces a lesion resembling human panacinar emphysema. This paper reports the occurrence of irreversible goblet cell metaplasia in the bronchial epithelium of hamsters similarly exposed to elastase. The goblet cell change was
Maspin, a serine protease inhibitor, was originally reported as a tumor suppressor gene in breast and prostatic cancers. We examined maspin expression and/or the allele-specific methylation status in four gastric cancer cell lines, as well as normal, metaplastic, and cancerous epithelia obtained

Rational Drug Development for Mucous Dehydration and Mucous Metaplasia.

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Airway diseases that are clinically characterized by mucous hypersecretion are associated with dehydrated secretions and impaired mucociliary clearance. The failure to clear pro-inflammatory proteases can further exacerbate the mucous dehydration, giving rise to a positive feedback loop that

[Relationship between gastric carcinoma and enzyme spectrum activity in gastric mucosal intestinal metaplasia].

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Biochemical method was adopted to examine 10 kinds of histologic enzyme spectrum activities in gastric intestinal metaplasia, carcinoma and normal or superficial gastritis mucosa taken from different sites from 17 fresh surgical specimens of stomach. The enzymes are aldolase (ALD), pyruvate kinase

Changes in the expression of matrix proteases and of the transcription factor c-Ets-1 during progression of precancerous bronchial lesions.

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Matrix proteases and the transcription factor c-Ets-1, which regulates in vitro stromelysin 1, collagenase 1, and urokinase type plasminogen activator gene promoters, are frequently expressed in invasive carcinomas. Using in situ hybridization and immunohistochemistry, we analyzed collagenase 1,

Endogenous Protease Inhibitors in Airway Epithelial Cells Contribute to Eosinophilic Chronic Rhinosinusitis.

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Cystatin A and SPINK5 are endogenous protease inhibitors (EPIs) that may play key roles in epithelial barrier function. To investigate the roles of EPIs in the pathogenesis of chronic rhinosinusitis (CRS). We examined the expression of cystatin A and SPINK5 in the nasal epithelial cells of patients
CD9 and CD81 are closely related tetraspanins that regulate cell motility and signaling by facilitating the organization of multimolecular membrane complexes, including integrins. We show that CD9 and CD81 are down-regulated in smoking-related inflammatory response of a macrophage line, RAW264.7.

Polarization of protease-activated receptor 2 (PAR-2) signaling is altered during airway epithelial remodeling and deciliation.

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Protease-activated receptor 2 (PAR-2) is activated by secreted proteases from immune cells or fungi. PAR-2 is normally expressed basolaterally in differentiated nasal ciliated cells. We hypothesized that epithelial remodeling during diseases characterized by cilial loss and squamous metaplasia may
BACKGROUND The prognostic relevance of urokinase-type plasminogen activator (u-PA), u-PA receptor (u-PAR), and plasminogen activator inhibitor 1 (PAI-1) in gastric carcinoma was demonstrated in an independent patient series. To the authors' knowledge,the roles of these activators as predictors of

Targeting Proteases in Cystic Fibrosis Lung Disease: Paradigms, Progress, and Potential.

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Cystic fibrosis (CF) is the most common life-limiting hereditary condition of Caucasian populations and is characterised by chronic airways inflammation driving progressive structural lung damage. Despite tremendous advances in the treatment of CF and concomitant increased life expectancy for

Immunocytochemical evidence for gastric proteases in adenocarcinoma of the stomach.

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When anti-sera to bovine pepsinogen and chymosin (rennin) was used, immunoreactive tumor cells were found in 12 of 23 gastric adenocarcinomas irrespective of the tumor subtype, degree of differentiation, or the presence or absence of intestinal metaplasia in the adjacent gastric mucosa. Nine of ten

Expression of protease-activated-receptor 2 (PAR-2) in human esophageal mucosa.

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OBJECTIVE The role of duodenal reflux in gastroesophageal reflux disease (GERD) containing bile salts and pancreatic enzymes (with special attention to trypsin) is still under discussion. Proteinase-activated receptors (PARs) are a novel family and PAR-2 is a unique member of this family because it
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