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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한병리학회 Journal of Pathology and Translational Medicine Journal of Pathology and Translational Medicine 제37권 제1호
- 발행연도
- 2003.1
- 수록면
- 41 - 49 (9page)
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Background : Acute tubular necrosis (ATN) is the most common cause of acute renal failure. It is characterized by the destruction of tubular epithelial cells. To examine apoptosis and proliferative
activity of tubular cells in the course of acute tubular necrosis, we induced acute renal failure by intramuscular hypertonic glycerol injection to New Zealand White rabbits. Methods : The immunohistochemistry was done for Ki-67 and tissue-transglutaminase (tTG), and the terminal deoxynucleotidyl transferase mediated nick end labeling (TUNEL) method was performed using a total of 77 renal specimens including 29 gun biopsies and 48 nephrectomiy
specimens. Results : Widespread tubular injury with pigment casts and interstitial hemorrhage
were noted. The tubular proliferation index was increased at 2 hours after glycerol injection,
and the index peaked at 3 hours. The second cell proliferation peak was noted at 3 days. Apoptotic cells were identified by TUNEL and tTG staining. The apoptotic index was significantly increased, and it peaked at 24 hours after glycerol injection. There was a significant
correlation between the proliferation index (MIB-1) the and the apototic index (TUNEL)(p=
0.001). A DNA ladder pattern was observed at 6 to 8 hours. Conclusions : Tubular cell proliferation and apoptosis occur in the early phase after the induction of acute tubular necrosis, and the excess hyperplastic epithelial cells appear to be eliminated by apoptosis.
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