2010
DOI: 10.1159/000314362
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Deficiency in the Serum-Derived Hyaluronan-Associated Protein-Hyaluronan Complex Enhances Airway Hyperresponsiveness in a Murine Model of Asthma

Abstract: phase responses were similar. Cell differentials of BALF showed an increased number of macrophages and neutrophils in KO mice. Furthermore, decreased concentrations of soluble tumor necrosis factor receptor-1 (sTNFR1) were found in BALF from KO mice whereas the levels of Th1 and Th2 cytokines were not different from WT mice. Immunochemical study of the lung tissues revealed stronger staining of sTNFR1 in KO than in WT mice. Conclusions: Our results suggest that in this murine asthma model, the SHAP-HA complex … Show more

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Cited by 22 publications
(17 citation statements)
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References 86 publications
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“…Interestingly, SHAP-HA-deficient (bikunin knock-out) mice show higher airway hyper-responsiveness to inhaled methacholine and higher late phase response to exposed aerosol ovalbumin, exhibiting an increased number of macrophages and neutrophils but decreased soluble tumor necrosis factor receptor-1 in their bronchoalveolar lavage fluid. This finding suggests that SHAP-HA has an inhibitory role in the development of airway hyper-responsiveness and allergic airway inflammation (66). Although both SHAP-HA and HC-HA purified from human AM are similar complexes, characterized by high molecular mass HA covalently linked to HC (42,43,64), there are important differences.…”
Section: Discussionmentioning
confidence: 97%
“…Interestingly, SHAP-HA-deficient (bikunin knock-out) mice show higher airway hyper-responsiveness to inhaled methacholine and higher late phase response to exposed aerosol ovalbumin, exhibiting an increased number of macrophages and neutrophils but decreased soluble tumor necrosis factor receptor-1 in their bronchoalveolar lavage fluid. This finding suggests that SHAP-HA has an inhibitory role in the development of airway hyper-responsiveness and allergic airway inflammation (66). Although both SHAP-HA and HC-HA purified from human AM are similar complexes, characterized by high molecular mass HA covalently linked to HC (42,43,64), there are important differences.…”
Section: Discussionmentioning
confidence: 97%
“…The trypsin solution and combined washes were designated as “pericellular.” After cell counting, the cells were placed in Proteinase K solution (0.15 M Tris–HCl, pH 7.5, 0.15 M NaCl, 0.01 M CaCl 2 and 5 mM deferoxamine mesylate containing 20 U of proteinase K) and incubated for 2 hr at 55°C, and this solution was designated as “intracellular.” All samples were heated at 100°C for 15 min to inactivate protease activity and centrifuged at 15,000 g for 30 min at 4°C, after which the supernatants were analyzed. The HA concentrations were measured using the HA binding assay, as described previously . Briefly, each well in a Maxisorp microtiter plate (Nunc, Roskilde, Denmark) was coated with 50 μl of HABP (Seikagaku, Tokyo, Japan; 0.4 μg/ml in 0.1 M NaHCO 3 , pH9.2), overnight at 4°C, and subjected to blocking with 200 μl each of 2% BSA in phosphate‐buffered saline with 0.1% (v/v) Tween 20 (PBS‐T) at room temperature for 2 hr.…”
Section: Methodsmentioning
confidence: 99%
“…As a nonarthritis control, blood was collected from normal nonimmunized mice (n = 10). The concentration of HA in serum was determined using an HA binding assay, as described previously (15).…”
Section: Methodsmentioning
confidence: 99%