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A study of oxidative stress in migraine with special reference to prophylactic therapy
Gyanesh M Tripathi1, Jayantee Kalita1, Usha K Misra1
1a Department of Neurology , Sanjay Gandhi Postgraduate Institute of Medical Sciences , Lucknow , India.
Objective:
The role of oxidative stress markers in migraine and effect of treatment on these has been reported.
Subjects And Methods:
One hundred and fifty patients having > four attacks of migraine headache/month were included. Headache severity, Migraine Index (MI) and frequency of headache were noted. 120 patients received repetitive transcranial magnetic stimulation (rTMS) therapy and 30 patients received Amitriptyline (AMT). Recovery was defined by 50% improvement in frequency, severity or reduction in MI. Oxidative stress and antioxidant markers have been estimated in patients before and after treatment and correlate the clinical and outcome parameters.
Results:
Glutathione (GSH) (P < 0.001), glutathione-S-transferase (GST) (P = 0.049) and total antioxidant activity (TAC) (P < 0.001) level were significantly reduced in migraine patients. GSH (P = 0.02), GST (P = 0.05) and TAC (P < 0.001) were reduced in ictal migraineurs compared to controls. GSH (P < 0.001) and TAC (P = 0.003) levels increased after treatment compared to the base line. There is an increase in GSH levels in the patients who had improved following rTMS (P = 0.003); placebo (P = 0.001) and AMT (P = 0.013). TAC levels were also increased following rTMS (P = 0.009) and AMT (P = 0.020).
Conclusion:
There is evidence of oxidative stress in migraine pathophysiology. Following treatment, oxidative stress declined following both pharmacological and rTMS.
