[Effects of Niupo Zhibao Pellet on high-mobility group box-1 protein expression in lung tissues of endotoxin shock rats].
OBJECTIVE
To observe the effects of Niupo Zhibao Pellet, a compound traditional Chinese herbal medicine, on high-mobility group box-1 protein (HMGB1) expression in lung tissues of rats with endotoxin shock.


METHODS
Thirty SPF Sprague-Dawley rats were randomly divided into control group, lipopolysaccharide (LPS) group and Niupo Zhibao Pellet group. Rats in Niupo Zhibao Pellet group were consecutively administered 7 days with 3 mL (1 g/L) Niupo Zhibao Pellet saline suspension every day by intragastric administration. Endotoxin shock was induced in rats of the LPS and Niupo Zhibao Pellet groups by intravenous injection of LPS (1.5 mg/kg) and intraperitoneal injection of D-galactosamine (100 mg/kg). Expression of HMGB1 in lung tissues was measured by immunohistochemical method with diaminobenzidine (DAB) coloration, fluorescein isothiocyanate (FITC) labeling, and by Western blotting.


RESULTS
Expression of HMGB1 in lung tissues in the LPS group was increased and that in Niupo Zhibao Pellet group was higher than that in the LPS group and the control group. HMGB1 was presented in the cytoplasm of positive cells in the LPS group, but in the nucleus of positive cells in the Niupo Zhibao Pellet group. However, HMGB1 was little expressed in the lung tissues of normal rats.


CONCLUSIONS
Niupo Zhibao Pellet can increase HMGB1 expression and locate HMGB1 in the nucleus but not the cytoplasm, which may be one of its mechanisms in reducing endotoxin shock.
Department of Anatomy, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China. lihui@gzhtcm.edu.cn
Hui
H
Li
Shao-hui
SH
Du
Sai-xia
SX
Zhang
Ru-dong
RD
Deng
Chun
C
Li
Yi-wei
YW
Li
Dong-feng
DF
Chen
Jian-hong
JH
Zhou
D000818:Animals; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D005260:Female; D024243:HMGB1 Protein / Q000378:metabolism*; D008168:Lung / Q000378:metabolism*; D008297:Male; D008517:Phytotherapy; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D012772:Shock, Septic / Q000188:drug therapy* / Q000378:metabolism
D004365:Drugs, Chinese Herbal; D024243:HMGB1 Protein