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© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Cox and Butler [11] reviewed 200 individuals with the 15q11.2 BP1–BP2 microdeletion reported in the literature and grouped the findings into five categories: (1) developmental (73% of cases), speech (67%), and motor delays (42%); (2) dysmorphic ears (46%) and palatal anomalies (46%); (3) writing (60%) and reading (57%) difficulties, memory problems (60%), and verbal IQ scores ≤75 (50%); (4) general behavioral problems, unspecified (55%); and (5) abnormal brain imaging (43%). Functional analysis of the mutant NIPA2 gene variants showed decreased intracellular magnesium concentration in neurons, suggesting that lower intracellular magnesium concentrations would enhance N-methyl-d-aspartate receptor (NMDAR) currents and impact neuron excitability and brain function. Magnesium is required for over 300 enzyme systems that are critical for multiple cellular functions, energy expenditure—including oxidative phosphorylation and glycolysis—as well as DNA transcription, protein synthesis, and muscle and nerve function. Recent studies have shown that the absence of NIPA2 enhances neural excitability through the BK potassium channels, as evidenced from experiments in NIPA2 knockout mice versus wild-type mice using whole-cell patch-clamp recordings to measure the electrophysiological properties of neocortical somatosensory pyramidal neurons [31].

Details

Title
Magnesium Supplement and the 15q11.2 BP1–BP2 Microdeletion (Burnside–Butler) Syndrome: A Potential Treatment?
Author
Butler, Merlin G
Publication year
2019
Publication date
Feb 2019
Publisher
MDPI AG
ISSN
16616596
e-ISSN
14220067
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2332757148
Copyright
© 2019. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.