Posted on 03/04/2005 5:33:36 PM PST by Coleus
Department of Pediatry (M.M.-B.), CHU Nimes, FRANCE
Department of Biochemistry (M.R.), CHU Nimes, FRANCE
Laboratoire de Biochimie, Groupe Hospitalier Carémeau (J.P.B.), Nimes Cedex, FRANCE
Department of Pharmacology, Faculty of Medicine, University of Bourgogne, Dijon (J.R.), FRANCE
Address reprint requests to: Dr. Jean-Pierre Bali, Laboratoire de Biochimie, Groupe Hospitalier Carémeau, Place du Professeur Robert Debré, 30029 Nimes Cedex, FRANCE. E-mail: bali2003@yahoo.fr
Objective: Ionic magnesium (Mg2+) depletion has long been known to cause hyperexcitability with convulsive seizures in rodents, effects that have been reversed by treatment with magnesium (Mg). Metabolic disorders and genetic alterations are suspected in this pathology, in which Mg2+ transport and intracellular distribution may be reduced without change in serum Mg2+ concentrations. We evaluated the effects of Mg2+/vitamin B6 regimen on the behavior of 52 hyperexcitable children (under 15 years of age) and their families.
Methods: To assess intracellular Mg2+, we measured intra-erthrocyte Mg2+ levels (ERC-Mg). Our reference values for normal subjects were 2.46 to 2.72 mmol/L. In 30 of the 52 hyperactive children, there were low ERC-Mg values: 2.041 ± 0.279 mmol/L). Combined Mg2+/vitamin B6 intake (100 mg/day) for 3 to 24 weeks restored normal ERC-Mg values (2.329 ± 0.386 mmol/L).
Results: In all patients, symptoms of hyperexcitability (physical aggressivity, instability, scholar attention, hypertony, spasm, myoclony) were reduced after 1 to 6 months treatment. Other family members shared similar symptoms, had low ERC-Mg values, and also responded clinically to increased Mg2+/vitamin B6 intakes. Two typical families are described.
Conclusion: This open study indicates that hyperexcitable children have low ERC-Mg with normal serum Mg2+ values, and that Mg2+/vitamin B6 supplementation can restore normal ERC-Mg levels and improve their abnormal behavior.
Key words: magnesium, ADHD, regimen, erythrocyte, hyperactive children
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