[Effects of smoking on the lipid peroxides antioxidation and alpha 1-antitrypsin].
OBJECTIVE
Detecting free radicals and alpha 1-antitrypsin (alpha 1-AT) from healthy smoker's blood to study the action of free radicals in smoking induced diseases.


METHODS
Thiobarbituric acid method (TBA), RIA, 5-5'-dithio-2-dinitrobenzoicacid (DTNB) method, Ellman method and enzyme linked immunosorbent assay were used to detect the lipid peroxides (LPO), superoxide dismutase (SOD), glutathione peroxidase (GSH-px), glutathione (GSH) and alpha 1-AT.


RESULTS
In the blood of nonsmokers, LPO was 4.9 +/- 2.5 mumol/L, SOD was 878 +/- 302 ng/g Hb, GSH-px was 120 +/- 35 U, GSH was 3.4 +/- 0.7 mmol/L, alpha 1-AT was 75 +/- 11 mg/L, in the blood of smokers, they were 6.1 +/- 3.0 mumol/L, 780 +/- 282 ng/g Hb, 112 +/- 34 U, 3.1 +/- 0.8 mmol/L, 71 +/- 15 mg/L respectively. The LPO content in the blood of smokers was significant higher than that of nonsmokers (P < 0.01), but the SOD GSH-px GSH and alpha 1-AT contents measured was significant lower (P < 0.05 or P < 0.01).


CONCLUSIONS
The increase of oxidation and decrease of antioxidation, activity of alpha 1-AT and imbalance of protease and antiprotease might play important roleg in smoking induced diseases.
Zhao
Y X
YX
Respiratory Disease Institution, Chinese Medical University, Shenyang 110001.
Yu
R J
RJ
D000328:Adult; D005260:Female; D005978:Glutathione / Q000097:blood; D005979:Glutathione Peroxidase / Q000097:blood; D006801:Humans; D008054:Lipid Peroxides / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000097:blood*; D013482:Superoxide Dismutase / Q000097:blood; D000515:alpha 1-Antitrypsin / Q000378:metabolism*
D008054:Lipid Peroxides; D000515:alpha 1-Antitrypsin; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005978:Glutathione