徳島大学 教育・研究者情報データベース(EDB)

1. 徳島大学.大学院ヘルスバイオサイエンス研究部.神経情報医学部門.病態情報医学講座(2004年4月1日〜)

1. 漆原 真樹([徳島大学.大学院医歯薬学研究部.医学域.医科学部門.内科系.小児科学]/[徳島大学.病院.診療科.小児·周産·女性科.小児科])

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2. 香美 祥二([徳島大学])

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3. (英) Kuhara Takeshi

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4. 玉置 俊晃

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5. 黒田 𣳾弘

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(英) Glomerular distribution and gelatinolytic activity of natrix metalloproteinases in human glomerulonephritis.

(英) Matrix metalloproteinases (MMPs) have been implicated in the development of glomerular injury in rat experimental glomerulonephritis (GN). However, the significance of MMPs in human GN remains obscure. In order to evaluate the role of MMPs in human GN, we examined the glomerular distribution and gelatinolytic activities of MMP-2 and MMP-9 in human GN. We performed immunohistochemistry with polyclonal anti-MMP-2 and MMP-9 antibodies, and analysed gelatin zymograms of five isolated glomeruli from various types of human renal disease. The renal specimens investigated were from normal kidneys (n=5), IgA nephritis (n=20), Henoch-Schönlein nephritis (n=4), non-IgA mesangial proliferative GN (n=9), lupus nephritis (n=6), acute poststreptococcal GN (APSGN) (n=4) and diabetic nephropathy (DN) (n=4). MMP-2 immunoreactivity was not detected in normal controls or in any type of GN. MMP-9 staining, which was almost negative in normal glomeruli, was increased mainly in the mesangial region and corresponded to the level of glomerular cell proliferative changes in mesangial proliferative GN (IgA nephritis, Henoch-Schönlein nephritis, non-IgA mesangial proliferative GN and lupus nephritis). Positive but weak staining for MMP-9 was observed in mesangial areas in DN. In addition, double immunostaining showed that MMP-9 is colocalized in scattered neutrophils within diseased glomeruli in APSGN. MMP-9 gelatinolytic activity in five normal glomeruli was weakly detected. Consistent with the levels of immunostaining, MMP-9 glomerular activity was dramatically increased in nephritic glomeruli with IgA nephritis, lupus nephritis and DN. The gelatinolytic activity of MMP-2 was occasionally detectable in nephritic glomeruli. These results strongly suggest that MMP-9 plays an important role in abnormal mesangial proliferative changes in human GN.

1. 細胞分裂(cell division)
2. (英) Gelatinases
3. (英) Glomerulonephritis
4. (英) Humans
5. 免疫組織化学(immunohistochemistry)
6. (英) Kidney Glomerulus
7. (英) Matrix Metalloproteinase 2
8. (英) Matrix Metalloproteinase 9
9. (英) Matrix Metalloproteinases
10. (英) Reference Values

1. (英) Article.Affiliation: Department of Pediatrics, School of Medicine, University of Tokushima, Tokushima, Japan.

2. (英) Article.PublicationTypeList.PublicationType: Journal Article

3. (英) Article.PublicationTypeList.PublicationType: Research Support, Non-U.S. Gov't