Affiliation:
1. Mashhad University of Medical Sciences
Abstract
Abstract
Niemann-Pick (NP) types A (NPA) and B (NPB) are life-threatening and rare inherited lysosomal storage disorders, caused by a deficiency in the acid sphingomyelinase enzyme activity. The negative outcome of this deficiency is the sphingomyelin (SM) accumulation in different organs and tissues. Trehalose is a natural disaccharide with neuroprotective and autophagy-inducing abilities which has recently been shown to improve clinical and biochemical features of patients with NPA/B. Changes in the serum metabolome were assessed in five patients with NPA/B, who received 15 g/week of trehalose intravenously for three months, using an untargeted gas chromatography-mass spectrometry (GC-MS) method. MSDIAL was used for data processing, and PCA, and OPLS-DA were carried out using SIMCA. OPLS-DA model revealed significant changes in several serum metabolites including phosphate (P = .0019), sorbitol (P = .00009), myoinositol (P = .02), threonine (P = .01), lactic acid (P = .0001), 1-monopalmitin (P = .01), threitol (P = .002), ribitol (P = .008), and D-ribose (P = .007) following trehalose treatment. The findings revealed that the beneficial effects of trehalose in patients with NP are mediated by metabolic alterations. A clear shift in glucose metabolism in favor of less fatty acid production together with facilitating the breakdown of sphingomyelins is involved in the observed protective activity.
Publisher
Research Square Platform LLC