Expression and modulation of aquaporin 5 in hyperoxia induced lung injury
OBJECTIVE: To explore the expression and the modulation of aquaporin 5(AQP5) in hyperoxia induced lung injury
| Veröffentlicht in: | Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue. - 1998. - 18(2006), 8 vom: 04. Aug., Seite 462-5 |
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| Weitere Verfasser: | , |
| Format: | Aufsatz |
| Sprache: | Chinese |
| Veröffentlicht: |
2006
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| Zugriff auf das übergeordnete Werk: | Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue |
| Schlagworte: | English Abstract Journal Article Research Support, Non-U.S. Gov't Aqp5 protein, rat Aquaporin 5 RNA, Messenger Dexamethasone 7S5I7G3JQL |
| Zusammenfassung: | OBJECTIVE: To explore the expression and the modulation of aquaporin 5(AQP5) in hyperoxia induced lung injury METHODS: Sixty four Wistar rats of 2 weeks old, were randomly assigned to following groups (n=8): air group, hyperoxia 3, 7, 14 days groups, air + dexamethasone (Dex), hyperoxia 3, 7, 14 days + Dex groups. The rats were kept in oxygen chamber at normal pressure (O(2)> or =95%) in hyperoxia groups, and in normal pressure air (O(2)=21%) in room-air group, and the rats in Dex groups were injected with Dex (5 mg.kg(-1).d(-1)) intraperitoneally for 3 consecutive days in room-air or hyperoxia exposure. The expression of AQP5 mRNA level and the location were detected by reverse transcription-polymerase chain reaction and immunohistochemistry respectively RESULTS: AQP5 was strongly labeled in alveolar epithelial type I cells, and was also expressed in the secretory epithelium plasma membrane in the airway. The location of AQP5 in hyperoxia groups was not changed, but the expression of AQP5 mRNA had a notable gradual decline when the time of hyperoxia exposure was prolonged, compared to control group (all P<0.05). There was no difference in AQP5 mRNA level between hyperoxia groups and hyperoxia + Dex groups at different time points (all P<0.05) CONCLUSION: The significant decrease in AQP5 may be an important factor of pulmonary edema formation in hyperoxia-induced lung injury. Dex does not have effect on modulating the AQP5 expression in acute lung injury |
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| Beschreibung: | Date Completed 07.12.2010 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 1003-0603 |