| 1 | Sleep deprivation increase the expression of inducible heat shock protein 70 in rat gastric mucosa显示文摘AIM To .investigate if sleep deprivation is able to increase the expression of inducible heat shock protein 70 in gastric mucosa and its possible role in mucosal defense.METHODS Rats for sleep disruption were placed inside a computerized rotating drum, gastric mucosa was taken from rats with 1, 3 and 7 d sleep deprivation. RT-PCR,immunohistochemistry and Western blotting were used to determine the expression of heat shock protein 70.Ethanol (500 mL@ L 1, I.g.) was used to induce gastric muceea damage.RESULTS RT-PCR, Western blotting and immunostaining confirmed that the sleep deprivation as a stress resulted in significantly greater expression of inducible heat shock protein 70 in gastric mucosa of rats. After the 500mL@ L-1 ethanol challenge, the ulcer area found in the rats with 7 d sleep deprivation (19.15 ± 4.2) mm2 was significantly lower (P<0.01) than the corresponding control (53.7 ± 8.1) mm2.CONCLUSION Sleep deprivation as a stress, in addition to lowering the gastric mucosal barrier, is able to stimulate the expression of inducible heat shock protein 70 in gastric mucosa of rats, the heat shock protein 70 may play an important role in gastric mucosal protection. | Xi-Zhong Shen Marcel W.L. Koo Chi-Hin Cho Department of Gastroenterology,Zhongshan Hospital,Fudan University,136 Yixueyuan Road,Shanghai 200032,ChinaDepartment of Pharmacology.Faculty of Medicine,University of Hong Kong,5 Sassoon Road,Pokfulam,Hong Kong,ChinaSupported by .Dr.Marcel W.L.Koo,Department of Pharmacology,FacuLty of Medicine,the University of Hong Kong,5 Sassoon Road,Hong Kong,China.Wlkoo@hkusua.hku.hk | 2001 | World Journal of Gastroenterology2001，7，4： | 14 |
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