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Cirrhosis was induced by a chronic bile duct ligation (CBDL) performed 15, 30, and 60 days before sample collection and pharmacological tests. eNOS, caveolin, and HSP90 expression were measured in hepatic and lung tissues. Pharmacological tests to assess NO released by shear stress and by acetylcholine were performed in livers ( n = 28) and lungs ( n = 28) isolated from normal and CBDL rats. In lungs from CBDL rats, indirect evidence of high NO production induced by shear stress was associated with a high binding of HSP90 and a low binding of caveolin to eNOS. Opposite results were observed in livers from CBDL rats. Our study shows an opposite posttranslational regulation of eNOS by HSP90 and caveolin in lungs and liver from rats with CBDL. Such opposite posttranslational regulation of eNOS by regulatory proteins may explain in part the pulmonary overproduction of NO and the hepatic NO defect in rats with hepatopulmonary syndrome. <\/jats:p>","DOI":"10.1152\/ajpgi.00136.2007","type":"journal-article","created":{"date-parts":[[2007,10,5]],"date-time":"2007-10-05T21:17:35Z","timestamp":1191619055000},"page":"G864-G870","source":"Crossref","is-referenced-by-count":8,"title":["Opposite regulation of endothelial NO synthase by HSP90 and caveolin in liver and lungs of rats with hepatopulmonary syndrome"],"prefix":"10.1152","volume":"293","author":[{"given":"Jean-Louis","family":"Frossard","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eduardo","family":"Schiffer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Banu","family":"Cikirikcioglu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jo\u00eblle","family":"Bourquin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denis R.","family":"Morel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catherine M.","family":"Pastor","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"24","reference":[{"key":"R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhep.2007.01.020"},{"key":"R2","doi-asserted-by":"publisher","DOI":"10.1097\/01.shk.0000127683.26493.e4"},{"key":"R3","doi-asserted-by":"publisher","DOI":"10.1161\/01.RES.0000016837.26733.BE"},{"key":"R4","doi-asserted-by":"publisher","DOI":"10.1152\/ajplung.2000.279.5.L903"},{"key":"R5","doi-asserted-by":"publisher","DOI":"10.1164\/ajrccm\/145.4_Pt_1.798"},{"key":"R6","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.95.08111883"},{"key":"R7","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.200206-618OC"},{"key":"R8","doi-asserted-by":"publisher","DOI":"10.1053\/jhep.2000.7519"},{"key":"R9","doi-asserted-by":"publisher","DOI":"10.1053\/gast.1997.v113.pm9247483"},{"key":"R10","doi-asserted-by":"publisher","DOI":"10.1152\/ajpgi.1997.272.4.G779"},{"key":"R11","doi-asserted-by":"publisher","DOI":"10.3748\/wjg.v12.i2.228"},{"key":"R12","doi-asserted-by":"publisher","DOI":"10.1038\/33934"},{"key":"R13","doi-asserted-by":"crossref","unstructured":"Gomez FP, Martinez-Palli G, Barbera JA, Roca J, Navasa M, Rodriguez-Roisin R. 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