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Vitamin B6 and valproic acid in treatment of infantile spasms
Insights
High-dose vitamin B6 monotherapy showed limited efficacy for infantile spasms. Combining vitamin B6 with valproic acid proved effective and safe for treating infantile spasms.
Area of Science:
- Pediatric Neurology
- Clinical Pharmacology
Background:
- Infantile spasms (IS) are a severe epilepsy syndrome in infants.
- Treatment options for IS include adrenocorticotropic hormone (ACTH), vigabatrin, and various antiepileptic drugs.
- Optimal first-line and adjunctive therapies for IS remain under investigation.
Purpose of the Study:
- To evaluate the efficacy and safety of high-dose vitamin B6, valproic acid, or their combination in treating infantile spasms.
- To compare the effectiveness of these treatments against each other and against ACTH.
Main Methods:
- A study involving 20 patients diagnosed with infantile spasms.
- Patients were treated with high-dose vitamin B6, valproic acid, or a combination of both.
- Electroencephalography (EEG) and seizure frequency were monitored to assess treatment response.
Main Results:
- Vitamin B6 monotherapy showed limited success, with only 23% of patients experiencing a definite reduction in seizures.
- The combination of vitamin B6 and valproic acid resulted in significantly better EEG improvements (P < 0.05) and fewer seizures (P < 0.05) compared to vitamin B6 alone.
- Adrenocorticotropic hormone (ACTH) demonstrated higher initial efficacy (86%) but was associated with later recurrence of spasms.
Conclusions:
- The combination of vitamin B6 and valproic acid is an effective and safe treatment strategy for infantile spasms.
- While ACTH shows high initial response rates, its long-term effectiveness is limited by recurrence.
- Further research may explore optimized combination therapies for sustained seizure control in IS.
Abstract:
Twenty patients with infantile spasms were treated with high doses of vitamin b6, valproic acid, or both. Three of 13 patients (23%) treated initially with high doses of vitamin B6 demonstrated a definite reduction in seizures; 2 patients had no improvement on electroencephalography. Vitamin B6 therapy alone was continued in a single patient (8%) who remained seizure-free during the 15-month follow-up period. Initial treatment with vitamin B6 and valproic acid improved the electroencephalogram significantly more (P less than 0.05) than initial vitamin B6 treatment alone. The group which had valproic acid added to vitamin B6 therapy had significantly fewer seizures (P less than 0.05) and better electroencephalograms (P less than 0.01) than did the group treated initially with vitamin B6 alone. There were no significant differences among the group treated initially with vitamin B6, the group treated initially with valproic acid, and the group in which valproic acid was substituted for vitamin B6. ACTH was more effective in abolishing seizures than was valproic acid or vitamin B6 and valproic acid. ACTH had an excellent effect on seizures in 86% of patients who did not respond well to vitamin B6, valproic acid, or both; however, many of these patients had later recurrence of infantile spasms. The combination of vitamin B6 and valproic acid is effective and safe in the treatment of infantile spasms.