کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3080290 1189334 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigating glycogenosis type III patients with multi-parametric functional NMR imaging and spectroscopy
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب تکاملی
پیش نمایش صفحه اول مقاله
Investigating glycogenosis type III patients with multi-parametric functional NMR imaging and spectroscopy
چکیده انگلیسی
Debranching enzyme deficiency (Glycogen storage disease (GSD) type III) causes progressive muscle wasting myopathy. A comprehensive nuclear magnetic resonance study involving spectroscopy (NMRS) and imaging (NMRI) evaluated status and function of calf muscles in 18 GSDIII patients. At rest, 31P NMRS showed elevated pH and accumulation of anomalous phosphomonoesters, 13C NMRS quantified excess glycogen accumulation and NMRI demonstrated progressive fat replacement that paralleled muscle weakness. Multi-parametric functional NMR, performed at recovery from a single bout of aerobic exercise, simultaneously assessed oxidative phosphorylation from 31P NMRS, muscle perfusion and BOLD, a marker of blood oxygenation, from arterial spin labeled NMRI, and oxygen uptake from deoxymyoglobin proton NMRS. While blocked glycogenolysis caused inadequate substrate supply to the mitochondria, combined measurements suggested that altered perfusion was also responsible for impaired post-exercise phosphocreatine recovery and could contribute to exercise intolerance in GSDIII. These non-invasive investigations provide new indices to quantify the progression of GSDIII.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuromuscular Disorders - Volume 20, Issue 8, August 2010, Pages 548-558
نویسندگان
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