Serum magnesium in adult patients with idiopathic and symptomatic epilepsy in Maiduguri, Northeast Nigeria.

BACKGROUND: Alteration in the homeostasis of trace elements such as magnesium may play a role in the development of epileptic seizures. This study aims to investigate the levels of serum magnesium in people with idiopathic generalized epileptic (IGE) seizures and symptomatic seizures in Northeast Nigeria. MATERIALS AND METHODS: Serum magnesium level was measured using atomic absorption spectrometry among 40 adults with IGE, 20 adults with symptomatic epileptic seizures, and 30 healthy controls. Serum calcium, potassium, phosphate, and albumin were also measured. RESULTS: The mean serum magnesium level was significantly lower among people with epilepsy compared with the controls [0.79 ± 0.18 mmol/L vs 0.90 mmol/L ± 0.17, P = 0.007, 95% confidence interval (CI): (-0.189 to -0.031)]. People with IGE had significantly lower levels of magnesium compared with those with symptomatic seizures [0.74 ± 0.17 mmol/L vs 0.9 ± 0.16 mmol/L, P < 0.001 95% CI: (-0.251 to -0.069)]. The mean magnesium level for all groups was in the reference range, but the lowest levels were observed in those with IGE. There is no significant correlation between the level of serum magnesium and the severity of seizure attacks. There was significantly lower level of calcium in people with IGE compared with those with symptomatic seizures [2.3 ± 0.13 mmol/L vs 2.4 ± 0.16 mmol/L, P = 0.012, 95% CI: (-0.177 to 0.023)] or controls [2.3 ± 0.13 mmol/L vs 2.4 ± 0.12 mmol/L, P < 0.01, 95% CI: (-0.156 to -0.044)]. No significant differences were observed in the levels of potassium, phosphate, and albumin. CONCLUSION: This study suggests that low serum magnesium and calcium may play a role in IGE, and supplementation may be useful in reducing seizures in Black patients with epilepsy.

Molecular and clinical features of inherited neuropathies due to PMP22 duplication.

PMP22 is a transmembrane glycoprotein component of myelin, important for myelin functioning. Mutation of PMP22 gene which encodes for the production of PMP22 glycoprotein is associated with a variety of inherited neuropathies. This literature review sought to review the molecular mechanism and clinical features of inherited neuropathies caused by PMP22 duplication. PMP22 duplication causes CMT1A which accounts for more than half of all CMT cases and about 70% of CMT1 cases. It manifests with muscle weakness, depressed reflexes, impaired distal sensation, hand and foot deformities, slowing of NCV and onion bulbs. With no specific treatment available, it is managed conservatively. Future treatment may be based on the molecular genetics of the disease.