| |

» return
to publications listing
Antioxidants Reduce Toxic Free Radicals: A
Case Study
Theodore Hersh, MD
Thione International, Inc.
Presented by title, World Conference on Tobacco OR Health, Aug. 2000
Tobacco smoke generates free radicals (FR) and induces oxidant stress
to both primary (P) and secondary (passive) (S) smokers. FR cause
damage to cells and DNA and oxidize plasma low density lipoproteins
(LDL), which transport "bad" cholesterol. Case Study:
P and S smokers, who live and work together, had oxidative stress
evaluated by daily 24 hour urine malondialdehyde (TBARS) tests,
10 during control (C) period and 9 during supplementation (T) with
a glutathione antioxidant complex. Blood was drawn at control and
14 days after therapy to assess LDL oxidation, including time for
initiation of oxidation (lag phase; LP) and propagation phase (PP)
of the reaction (measured in minutes). P smoked during both study
periods.
| Smoker |
TBARS:C |
T |
LP:C |
T |
PP:C |
T |
| (P) |
.97 |
.52 |
10 |
60 |
55 |
130 |
| (S) |
.77 |
.42 |
30 |
65 |
60 |
120 |
On antioxidant supplementation, lipid perioxidation caused by tobacco
FR was reduced, as measured by TBARS, while the time for initiation
of oxidation of LDLs was prolonged in both P & S smokers.
Conclusions: Antioxidants decrease FR oxidative stress in smokers,
which may help reduce risks of developing tobacco related diseases.
Antioxidant supplementation should be an adjunct to smoking cessation
programs.
» return
to publications listing
|