Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis.
Primary causes of urinary tract obstruction that induces urine retention and results in hydronephrosis include uroliths, inflammation, and tumors. In this study, we analyzed the molecular pathology of ureteritis causing hydronephrosis in laboratory rodents.F2 progenies of C57BL/6 and DBA/2 mice were...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3218045?pdf=render |
| _version_ | 1818989961673703424 |
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| author | Osamu Ichii Saori Otsuka Yuka Namiki Yoshiharu Hashimoto Yasuhiro Kon |
| author_facet | Osamu Ichii Saori Otsuka Yuka Namiki Yoshiharu Hashimoto Yasuhiro Kon |
| author_sort | Osamu Ichii |
| collection | DOAJ |
| description | Primary causes of urinary tract obstruction that induces urine retention and results in hydronephrosis include uroliths, inflammation, and tumors. In this study, we analyzed the molecular pathology of ureteritis causing hydronephrosis in laboratory rodents.F2 progenies of C57BL/6 and DBA/2 mice were studied histopathologically and by comprehensive gene expression analysis of their ureters. Incidence of hydronephrosis was approximately 5% in F2 progenies. Histopathologically, this hydronephrosis was caused by stenosis of the proximal ureter, which showed fibrosis and papillary malformations of the proliferative epithelium with infiltrations of B-cell-dominated lymphocytes. Additionally, CD16-positive large granular leukocytes and eosinophils infiltrated from the ureteral mucosa to the muscular layer. Eosinophilic crystals were characteristically observed in the lumen of the ureter and the cytoplasm of large granular leukocytes, eosinophils, and transitional epithelial cells. Comprehensive gene profiling revealed remarkably elevated expression of genes associated with hyperimmune responses through activation of B cells in diseased ureters. Furthermore, diseased ureters showed dramatically higher gene expression of chitinase 3-like 3, known as Ym1, which is associated with formation both of adenomas in the transitional epithelium and of eosinophilic crystals in inflammatory conditions. The Ym1 protein was mainly localized to the cytoplasm of the transitional epithelium, infiltrated cells, and eosinophilic crystals in diseased ureters.We determined that the primary cause of hydronephrosis in F2 mice was ureteritis mediated by the local hyperimmune response with malformation of the transitional epithelium. Our data provide a novel molecular pathogenesis for elucidating causes of aseptic inflammation in human upper urinary tracts. |
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| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-20T19:46:48Z |
| publishDate | 2011-01-01 |
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| series | PLoS ONE |
| spelling | doaj.art-41255ff406c34fe0a1482458514fa6a62022-12-21T19:28:24ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-01611e2778310.1371/journal.pone.0027783Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis.Osamu IchiiSaori OtsukaYuka NamikiYoshiharu HashimotoYasuhiro KonPrimary causes of urinary tract obstruction that induces urine retention and results in hydronephrosis include uroliths, inflammation, and tumors. In this study, we analyzed the molecular pathology of ureteritis causing hydronephrosis in laboratory rodents.F2 progenies of C57BL/6 and DBA/2 mice were studied histopathologically and by comprehensive gene expression analysis of their ureters. Incidence of hydronephrosis was approximately 5% in F2 progenies. Histopathologically, this hydronephrosis was caused by stenosis of the proximal ureter, which showed fibrosis and papillary malformations of the proliferative epithelium with infiltrations of B-cell-dominated lymphocytes. Additionally, CD16-positive large granular leukocytes and eosinophils infiltrated from the ureteral mucosa to the muscular layer. Eosinophilic crystals were characteristically observed in the lumen of the ureter and the cytoplasm of large granular leukocytes, eosinophils, and transitional epithelial cells. Comprehensive gene profiling revealed remarkably elevated expression of genes associated with hyperimmune responses through activation of B cells in diseased ureters. Furthermore, diseased ureters showed dramatically higher gene expression of chitinase 3-like 3, known as Ym1, which is associated with formation both of adenomas in the transitional epithelium and of eosinophilic crystals in inflammatory conditions. The Ym1 protein was mainly localized to the cytoplasm of the transitional epithelium, infiltrated cells, and eosinophilic crystals in diseased ureters.We determined that the primary cause of hydronephrosis in F2 mice was ureteritis mediated by the local hyperimmune response with malformation of the transitional epithelium. Our data provide a novel molecular pathogenesis for elucidating causes of aseptic inflammation in human upper urinary tracts.http://europepmc.org/articles/PMC3218045?pdf=render |
| spellingShingle | Osamu Ichii Saori Otsuka Yuka Namiki Yoshiharu Hashimoto Yasuhiro Kon Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. PLoS ONE |
| title | Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. |
| title_full | Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. |
| title_fullStr | Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. |
| title_full_unstemmed | Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. |
| title_short | Molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis. |
| title_sort | molecular pathology of murine ureteritis causing obstructive uropathy with hydronephrosis |
| url | http://europepmc.org/articles/PMC3218045?pdf=render |
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