Tay-Sachs disease is an autosomal recessive disorder of sphingolipid metabolism, caused by enzyme hexosaminidase A deficiency that leads to an accumulation of GM2 in neurocytes which results in progressive loss of neurological function. The accumulation of lipid in retinal ganglion cells that leads to a chalk-white appearance of the fundus called 'cherry red spot' is the hallmark of Tay-Sachs d...

Introduction Canavan disease (CD) is a type of vacuolating leukodystrophy with autosomal recessive inheritance (1). This neurodegenerative disorder is caused by a defect in the aspartoacylase (ASPA) gene encoding the critical enzyme aspartoacylase, which has the role of hydrolyzing N-acetyl-L-aspartic acid (NAA) and providing the acetyl group to oligodendrocytes for myelin synthesis (2, 3). Asp...

how to cite this article: karimzadeh p, jafari n, nejad biglari h, jabbehdari j, khayat zadeh s, ahmad abadi f, lotfi a. neurometabolic diagnosis in children who referred as neurodevelopmental delay (a practical criteria, in iranian pediatric patients). iran j child neurol. summer 2016; 10(3):73-81.   objective we aimed to investigate the clinical and para clinical manifestations of neuro metab...

Adenylosuccinate lyase (ADSL) deficiency is a rare autosomal recessive neurometabolic disorder that presents with a broad-spectrum of neurological and physiological symptoms. The ADSL gene produces an enzyme with binary molecular roles in de novo purine synthesis and purine nucleotide recycling. The biochemical phenotype of ADSL deficiency, accumulation of SAICAr and succinyladenosine (S-Ado) i...

The functional and structural integrity of the brain requires local adjustment of blood flow and regulated delivery of metabolic substrates to meet the metabolic demands imposed by neuronal activation. This process-neurovascular coupling-and ensued alterations of glucose and oxygen metabolism-neurometabolic coupling-are accomplished by concerted communication between neural and vascular cells. ...

PURPOSE Proton magnetic resonance spectroscopy (1H MRS) is a noninvasive neuroimaging method to quantify biochemical metabolites in vivo and it can serve as a powerful tool to monitor neurobiochemical profiles in the brain. Asperger's syndrome (AS) is a type of autism spectrum disorder, which is characterized by impaired social skills and restrictive, repetitive patterns of interest and activit...

In neuropsychiatric research, the aspects of sex have received increasing attention over the past decade. With regard to the neurometabolic differences in the prefrontal cortex and the cerebellum of both men and women, we performed a magnetic resonance spectroscopic (MRS) study of a large group of healthy subjects. For neurometabolic measurements, we used single-voxel proton MRS. The voxels of ...

Despite extensive research, the exact pathomechanisms associated with epileptic seizure formation and propagation have not been elucidated completely. Two-photon imaging (2PI) is a fluorescence-based microscopy technique that, over years, has used to evaluate seizures epilepsy. Here, we review previous applications of 2PI in A systematic search was performed multiple literature databases. We id...