Six patients with juvenile neuronal ceroid-lipofuscinosis (NCL) who were demonstrated to have abnormally low levels of membrane phospholipids were treated by dietary supplementation with polyunsaturated fatty acids (PUFAs) for periods ranging from 4 years 10 months to 7 years 3 months. Annual evaluations of intelligence and fine motor ability were undertaken while on supplementation. Mental development remained stable in most subjects throughout this period; fine motor function and vision were stable in the two youngest subjects only. These data suggest that PUFA supplementation may arrest the natural course of juvenile NCL if treatment is started early. A larger, multicenter, controlled trial is warranted.
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http://dx.doi.org/10.1111/j.1469-8749.1994.tb11901.x | DOI Listing |
J Sleep Res
January 2025
Department of Ophthalmology and Visual Sciences, University of Kentucky, Lexington, Kentucky, USA.
The neuronal ceroid lipofuscinoses (NCLs) are a group of recessively inherited neurodegenerative diseases characterizsed by lysosomal storage of fluorescent materials. CLN3 disease, or juvenile Batten disease, is the most common NCL that is caused by mutations in the Ceroid Lipofuscinosis, Neuronal 3 (CLN3) gene. Sleep disturbances are among the most common symptoms associated with CLN3 disease that deteriorate the patients' life quality, yet this is understudied and has not been delineated in animal models of the disease.
View Article and Find Full Text PDFBrief monocular deprivation during a developmental critical period, but not thereafter, alters the receptive field properties (tuning) of neurons in visual cortex, but the characteristics of neural circuitry that permit this experience-dependent plasticity are largely unknown. We performed repeated calcium imaging at neuronal resolution to track the tuning properties of populations of excitatory layer 2/3 neurons in mouse visual cortex during or after the critical period, as well as in mutant mice that sustain critical-period plasticity as adults. The instability of tuning for populations of neurons was greater in juvenile mice and adult mutant mice.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia.
The ultrastructural organization of the nuclei of the tegmental region in juvenile chum salmon () was examined using transmission electron microscopy (TEM). The dorsal tegmental nuclei (DTN), the nucleus of (NFLM), and the nucleus of the oculomotor nerve (NIII) were studied. The ultrastructural examination provided detailed ultrastructural characteristics of neurons forming the tegmental nuclei and showed neuro-glial relationships in them.
View Article and Find Full Text PDFJ Clin Invest
January 2025
Department of Pharmacology, University of Michigan Medical School, Ann Arbor, United States of America.
Dravet syndrome (DS) is a developmental and epileptic encephalopathy (DEE) that begins in the first year of life. While most cases of DS are caused by variants in SCN1A, variants in SCN1B, encoding voltage-gated sodium channel β1 subunits, are also linked to DS or to the more severe early infantile DEE. Both disorders fall under the OMIM term DEE52.
View Article and Find Full Text PDFMed Sci (Basel)
January 2025
Department of Medical Genetics, Clinical Neurophysiology of Postgraduate Education, V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University, Russian National Research, Krasnoyarsk 660022, Russia.
: Epilepsy is a group of disorders characterized by a cluster of clinical and EEG signs leading to the formation of abnormal synchronous excitation of neurons in the brain. It is one of the most common neurological disorders worldwide; and is characterized by aberrant expression patterns; both at the level of matrix transcripts and at the level of regulatory RNA sequences. Aberrant expression of a number of microRNAs can mark a particular epileptic syndrome; which will improve the quality of differential diagnosis.
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