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Yashchyshyn ZM, Kreminska IB, Medynskyi MI, Fedorak VM, Ziablitsev SV, Diadyk OO, Fedoniuk LY. TISSUE EXPRESSION OF NEURONAL PROTEINS DURING SCIATIC NERVE REGENERATION AND INFLUENCE OF DIFFERENT SPECTRUM LASER RADIATION. POLSKI MERKURIUSZ LEKARSKI : ORGAN POLSKIEGO TOWARZYSTWA LEKARSKIEGO 2023; 51:112-119. [PMID: 37254757 DOI: 10.36740/merkur202302102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE Aim: To determine the effect of laser irradiation of different spectrum on the expression of neuronal proteins (GFAP, S100, NSE and NF-L) in the sciatic nerve during its regeneration after crossing and surgical suturing. PATIENTS AND METHODS Materials and methods: The experiment was performed on 60 laboratory rats of the Wistar line (200-250 g) with crossing of the left sciatic nerve and sutur¬ing with an epineural suture end to end 30 minutes after neurotomy. 90 days later, an immunohistochemical study was performed using specific antibodies (Thermo Fisher Scientific; USA). RESULTS Results: A study of the marker of non-myelin Schwann GFAP cells showed their pronounced activation with germination in nerve thickness and the formation of weaves of processes around regenerated nerve fibers. The number of S-100-positive myelin Schwann cells decreased, the heterogeneity of their color and the loss of processes were determined. It showed a general decrease in the intensity of NSE- and NF-L-positive staining of nerve fibers regenerated after neurotomy, which was less pronounced when irradiated with a laser with a wavelength of 450-480 nm and 520 nm. CONCLUSION Conclusions: In general, the use of laser radiation had a positive effect on the repair of nerve fibers after neurotomy. According to the immunohistochemical study of neuromarkers, the effect of laser irradiation of the blue spectrum was the most effective.
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Affiliation(s)
| | - Iryna B Kreminska
- IVANO-FRANKIVSK NATIONAL MEDICAL UNIVERSITY, IVANO-FRANKIVSK, UKRAINE
| | | | | | | | - Olena O Diadyk
- V.SHUPYK NATIONAL UNIVERSITY OF HEALTH CARE OF UKRAINE, KYIV, UKRAINE
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IMMUNOHISTOCHEMICAL DETECTION OF NEUROFILAMENTS IN THE SCIATIC NERVE, WHICH REGENERATES AFTER NEUROTOMY AND SURGICAL SUTURING. WORLD OF MEDICINE AND BIOLOGY 2022. [DOI: 10.26724/2079-8334-2022-3-81-252-256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Klymkowsky MW. Filaments and phenotypes: cellular roles and orphan effects associated with mutations in cytoplasmic intermediate filament proteins. F1000Res 2019; 8. [PMID: 31602295 PMCID: PMC6774051 DOI: 10.12688/f1000research.19950.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/20/2019] [Indexed: 12/11/2022] Open
Abstract
Cytoplasmic intermediate filaments (IFs) surround the nucleus and are often anchored at membrane sites to form effectively transcellular networks. Mutations in IF proteins (IFps) have revealed mechanical roles in epidermis, muscle, liver, and neurons. At the same time, there have been phenotypic surprises, illustrated by the ability to generate viable and fertile mice null for a number of IFp-encoding genes, including vimentin. Yet in humans, the vimentin ( VIM) gene displays a high probability of intolerance to loss-of-function mutations, indicating an essential role. A number of subtle and not so subtle IF-associated phenotypes have been identified, often linked to mechanical or metabolic stresses, some of which have been found to be ameliorated by the over-expression of molecular chaperones, suggesting that such phenotypes arise from what might be termed "orphan" effects as opposed to the absence of the IF network per se, an idea originally suggested by Toivola et al. and Pekny and Lane.
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Affiliation(s)
- Michael W Klymkowsky
- Molecular, Cellular & Developmental Biology, University of Colorado, Boulder, Boulder, CO, 80303, USA
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Accogli A, Russell L, Sébire G, Rivière JB, St-Onge J, Addour-Boudrahem N, Laporte AD, Rouleau GA, Saint-Martin C, Srour M. Pathogenic variants in AIMP1 cause pontocerebellar hypoplasia. Neurogenetics 2019; 20:103-108. [PMID: 30924036 DOI: 10.1007/s10048-019-00572-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 03/06/2019] [Indexed: 10/27/2022]
Abstract
Aminoacyl-tRNA synthetase-interacting multifunctional protein 1 (AIMP1) is a non-catalytic component of the multi-tRNA synthetase complex which catalyzes the ligation of amino acids to the correct tRNAs. Pathogenic variants in several aminoacyl-tRNA synthetases genes have been linked to various neurological disorders, including leukodystrophies and pontocerebellar hypoplasias (PCH). To date, loss-of-function variants in AIMP1 have been associated with hypomyelinating leukodystrophy-3 (MIM 260600). Here, we report a novel frameshift AIMP1 homozygous variant (c.160delA,p.Lys54Asnfs) in a child with pontocerebellar hypoplasia and simplified gyral pattern, a phenotype not been previously described with AIMP1 variants, thus expanding the phenotypic spectrum. AIMP1 should be included in diagnostic PCH gene panels.
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Affiliation(s)
- Andrea Accogli
- Departments of Pediatrics, Neurology & Neurosurgery, MUHC-Research Institute, McGill University, 1001 Blvd Décarie, Montreal, H4A 3J1, Canada.,IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy.,DINOGMI-Università degli Studi di Genova, 16126, Genoa, Italy
| | - Laura Russell
- Division of Medical Genetics, Department of Medicine, McGill University, Montreal, Canada
| | - Guillaume Sébire
- Departments of Pediatrics, Neurology & Neurosurgery, MUHC-Research Institute, McGill University, 1001 Blvd Décarie, Montreal, H4A 3J1, Canada
| | | | - Judith St-Onge
- McGill University Health Center (MUHC) Research Institute, Montreal, Canada
| | | | | | - Guy A Rouleau
- Montreal Neurological Institute, McGill University, Montreal, Canada
| | - Christine Saint-Martin
- Department of Radiology, Montreal Children's Hospital, McGill University Health Center, Montreal, Canada
| | - Myriam Srour
- Departments of Pediatrics, Neurology & Neurosurgery, MUHC-Research Institute, McGill University, 1001 Blvd Décarie, Montreal, H4A 3J1, Canada. .,McGill University Health Center (MUHC) Research Institute, Montreal, Canada.
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Wang S, Ji D, Yang Q, Li M, Ma Z, Zhang S, Li H. NEFLb impairs early nervous system development via regulation of neuron apoptosis in zebrafish. J Cell Physiol 2018; 234:11208-11218. [PMID: 30569449 DOI: 10.1002/jcp.27771] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/30/2018] [Indexed: 02/06/2023]
Abstract
Neurofilament light chain (NEFL), a subunit of neurofilament, has been shown to play an important role in pathogenic neurodegenerative disease and in radial axonal growth. However, information remains largely lacking regarding the function of NEFL in early development to date. In this study, we demonstrated the presence of two nefl genes, nefla and neflb, in zebrafish, generated by fish-specific third round genome duplication. These duplicated nefl genes were predominantly expressed in the nervous system with an overlapping and distinct expression pattern. Both gene knockdown and rescue experiments show that it was neflb rather than nefla that played an indispensable role in nervous system development. It was also found that neflb knockdown resulted in striking apoptosis of the neurons in the brain and spinal cord, leading to morphological defects such as brain structure disorder and trunk bending. Thus, we report a previously uncharacterized role of NEFL that NEFLb impairs the early development of zebrafish nervous system via regulation of the neuron apoptosis in the brain and spinal cord.
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Affiliation(s)
- Su Wang
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Dongrui Ji
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Qingyun Yang
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Mingyue Li
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Zengyu Ma
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Shicui Zhang
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
| | - Hongyan Li
- Laboratory for Evolution & Development, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China.,Laboratory for Evolution & Development, Department of Marine Biology, Ocean University of China, Qingdao, China
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Neurofilament light gene deletion exacerbates amyloid, dystrophic neurite, and synaptic pathology in the APP/PS1 transgenic model of Alzheimer's disease. Neurobiol Aging 2015; 36:2757-67. [DOI: 10.1016/j.neurobiolaging.2015.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 07/02/2015] [Accepted: 07/02/2015] [Indexed: 01/10/2023]
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Julien JP, Kriz J. Chapter 6 Animal models of motor neuron death. HANDBOOK OF CLINICAL NEUROLOGY 2007; 82:121-138. [PMID: 18808891 DOI: 10.1016/s0072-9752(07)80009-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Julien JP, Kriz J. Transgenic mouse models of amyotrophic lateral sclerosis. Biochim Biophys Acta Mol Basis Dis 2006; 1762:1013-24. [PMID: 16675207 DOI: 10.1016/j.bbadis.2006.03.006] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Revised: 03/21/2006] [Accepted: 03/21/2006] [Indexed: 12/11/2022]
Abstract
The discovery of missense mutations in the gene coding for the Cu/Zn superoxide dismutase 1 (SOD1) in subsets of familial cases was rapidly followed by the generation of transgenic mice expressing various forms of SOD1 mutants. The mice overexpressing high levels of mutant SOD1 mRNAs do develop motor neuron disease but unraveling the mechanisms of pathogenesis has been very challenging. Studies with mouse lines suggest that the toxicity of mutant SOD1 is unrelated to copper-mediated catalysis but rather to propensity of a subfraction of mutant SOD1 proteins to form misfolded protein species and aggregates. However, the mechanism of toxicity of SOD1 mutants remains to be elucidated. Involvement of cytoskeletal components in ALS pathogenesis is supported by several mouse models of motor neuron disease with neurofilament abnormalities and with genetic defects in microtubule-based transport. Here, we describe how transgenic mouse models have been used for understanding pathogenic pathways of motor neuron disease and for pre-clinical drug testing.
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Affiliation(s)
- Jean-Pierre Julien
- Research Centre of CHUL, Department of Anatomy and Physiology of Laval University, 2705 Boulevard Laurier, Quebec, QC, Canada G1V 4G2.
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Fiordelisio T, Millán-Aldaco D, Hernández-Cruz A. Cells of proopiomelanocortin lineage from the rodent anterior pituitary lack sexually dimorphic expression of neurofilaments. Neuroendocrinology 2006; 83:360-70. [PMID: 16940710 DOI: 10.1159/000095548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Accepted: 07/27/2006] [Indexed: 11/19/2022]
Abstract
Lactotrophs, gonadotrophs, thyrotrophs and somatotrophs of the rat anterior pituitary (AP) express 68-kDa neurofilaments (NF68) and other neuronal markers. NF68 expression in the AP appears to be estrogen-dependent, but its significance is unknown. The aims of this work were: (1) to establish the expression pattern of NF68 immunoreactivity in the mouse AP, and (2) discover if corticotrophs and melanotrophs from both rodent species also express NF68. Primary cultures and frozen sections of AP from sexually mature mice were immunolabeled with anti-NF68 antibodies. In separate experiments, samples were immunostained for NF68 and AP hormones. Here we report that mouse lactotrophs, gonadotrophs, thyrotrophs and somatotrophs also express NF68 in a sexually dimorphic manner. The percentages of non-expressing, weakly expressing and strongly expressing cells were similar between both rodent species, although NF68+ cells were about 50% less abundant in the mouse compared to the rat pituitary. Remarkably, our study shows for the first time that rodent pituitary cells from the proopiomelanocortin lineage nearly completely lack NF68 immunoreactivity. In this regard, they differ from the rest of the AP population. Our findings establish a foundation for experiments aimed at investigating the functional significance of estrogen-dependent regulation of NF68 expression in rodent AP cells.
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Affiliation(s)
- Tatiana Fiordelisio
- Departamento de Biofísica, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
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