scholarly journals Botulinum Neurotoxins in Central Nervous System: An Overview from Animal Models to Human Therapy

Toxins ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 751
Author(s):  
Siro Luvisetto
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Animal Models ◽  
Muscle Tone ◽  
Direct Injection ◽  
Retrograde Transport ◽  
Release Of Acetylcholine ◽  
Botulinum Neurotoxins ◽  
Natural Target ◽  
Synaptic Vesicle Fusion

Botulinum neurotoxins (BoNTs) are potent inhibitors of synaptic vesicle fusion and transmitter release. The natural target of BoNTs is the peripheral neuromuscular junction (NMJ) where, by blocking the release of acetylcholine (ACh), they functionally denervate muscles and alter muscle tone. This leads them to be an excellent drug for the therapy of muscle hyperactivity disorders, such as dystonia, spasticity, and many other movement disorders. BoNTs are also effective in inhibiting both the release of ACh at sites other than NMJ and the release of neurotransmitters other than ACh. Furthermore, much evidence shows that BoNTs can act not only on the peripheral nervous system (PNS), but also on the central nervous system (CNS). Under this view, central changes may result either from sensory input from the PNS, from retrograde transport of BoNTs, or from direct injection of BoNTs into the CNS. The aim of this review is to give an update on available data, both from animal models or human studies, which suggest or confirm central alterations induced by peripheral or central BoNTs treatment. The data will be discussed with particular attention to the possible therapeutic applications to pathological conditions and degenerative diseases of the CNS.

scholarly journals Lissencephaly-1 dependent axonal retrograde transport of L1-type CAM Neuroglian in the adult drosophila central nervous system

PLoS ONE ◽  
2017 ◽  
Vol 12 (8) ◽  
pp. e0183605 ◽  
Author(s):  
Sirisha R. Kudumala ◽  
Tyrone Penserga ◽  
Jana Börner ◽  
Olesya Slipchuk ◽  
Priyanka Kakad ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Retrograde Transport ◽  
Adult Drosophila

scholarly journals The Role of the JC Virus in Central Nervous System Tumorigenesis

2020 ◽  
Vol 21 (17) ◽  
pp. 6236
Author(s):  
Nicholas Ahye ◽  
Anna Bellizzi ◽  
Dana May ◽  
Hassen S. Wollebo
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Brain Tumor ◽  
Animal Models ◽  
Causative Agent ◽  
Jc Virus ◽  
Tumor Formation ◽  
Current Evidence ◽  
Merkel Cell

Cancer is the second leading cause of mortality worldwide. The study of DNA tumor-inducing viruses and their oncoproteins as a causative agent in cancer initiation and tumor progression has greatly enhanced our understanding of cancer cell biology. The initiation of oncogenesis is a complex process. Specific gene mutations cause functional changes in the cell that ultimately result in the inability to regulate cell differentiation and proliferation effectively. The human neurotropic Polyomavirus JC (JCV) belongs to the family Polyomaviridae and it is the causative agent of progressive multifocal leukoencephalopathy (PML), which is a fatal neurodegenerative disease in an immunosuppressed state. Sero-epidemiological studies have indicated JCV infection is prevalent in the population (85%) and that initial infection usually occurs during childhood. The JC virus has small circular, double-stranded DNA that includes coding sequences for viral early and late proteins. Persistence of the virus in the brain and other tissues, as well as its potential to transform cells, has made it a subject of study for its role in brain tumor development. Earlier observation of malignant astrocytes and oligodendrocytes in PML, as well as glioblastoma formation in non-human primates inoculated with JCV, led to the hypothesis that JCV plays a role in central nervous system (CNS) tumorigenesis. Some studies have reported the presence of both JC viral DNA and its proteins in several primary brain tumor specimens. The discovery of new Polyomaviruses such as the Merkel cell Polyomavirus, which is associated with Merkel cell carcinomas in humans, ignited our interest in the role of the JC virus in CNS tumors. The current evidence known about JCV and its effects, which are sufficient to produce tumors in animal models, suggest it can be a causative factor in central nervous system tumorigenesis. However, there is no clear association between JCV presence in CNS and its ability to initiate CNS cancer and tumor formation in humans. In this review, we will discuss the correlation between JCV and tumorigenesis of CNS in animal models, and we will give an overview of the current evidence for the JC virus’s role in brain tumor formation.

Understanding Central Nervous System Effects of Deliriant Hallucinogenic Drugs through Experimental Animal Models

2018 ◽  
Vol 10 (1) ◽  
pp. 143-154 ◽  
Author(s):  
Andrey D. Volgin ◽  
Oleg A. Yakovlev ◽  
Konstantin A. Demin ◽  
Polina A. Alekseeva ◽  
Evan J. Kyzar ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Animal Models ◽  
Experimental Animal ◽  
Hallucinogenic Drugs ◽  
Experimental Animal Models

scholarly journals Experimental study of various central nervous system effects of eugenol in mice and rats

2012 ◽  
Vol 10 (3) ◽  
pp. 208-214 ◽  
Author(s):  
M Sharma ◽  
GP Rauniar ◽  
BP Das
Keyword(s):  
Central Nervous System ◽  
Experimental Study ◽  
Nervous System ◽  
Animal Models ◽  
Antinociceptive Effect ◽  
Test Group ◽  
Control Group ◽  
Anticonvulsant Effect ◽  
Research Activities ◽  
Group I

Background: Eugenol is an essential component of many medicinal herbs. It is a member of the allylbenzene class of chemical compounds. Since years, it is being used in dental practice to relieve pain arising from pulpitis and dentinal hypersensitivity. There are few reports of anticonvulsant effect but further effects are less reported. Lack of comprehensive studies and data of eugenol on the central nervous system effects in animal models thus necessitates further research activities. Objective: To observe and evaluate various neuropharmacological effects like antinociceptive effect, anticonvulsant effect, effect on motor co-ordination, pentobarbital induced sleeping time and anxiolytic effect of eugenol in mice and rats. Methods: It was a quantitative experimental study done in the laboratory setting of the department of Clinical Pharmacology and Therapeutics. For each test, respective animal models were used. Animals were divided into three groups of six each, group I as control, group II as standard control and group III as test group. Results: Significant effects were observed in analgesic, anticonvulsant and sedative model whereas no significant effect as compared to control was observed in test of motor co-ordination and in behavioral models. Conclusion: This study shows eugenol to possess analgesic, anticonvulsant and sedative effect whereas it didn.t have any effect on models of anxiety. Various target sites have been implicated but this study doesn.t conclude a plausible mechanism behind all these observed effects. DOI: http://dx.doi.org/10.3126/hren.v10i3.7137 Health Renaissance; September-December 2012; Vol 10 (No.3);208-214

Animal models of central nervous system disorders

2020 ◽  
pp. 621-650
Author(s):  
Eduardo D. Gomes ◽  
Sandra Barata-Antunes ◽  
Andreia Teixeira-Castro ◽  
Rita C. Assunção-Silva ◽  
Cláudia R. Marques ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Animal Models ◽  
Central Nervous System Disorders

scholarly journals COVID-19 and Neurological Manifestations

2020 ◽  
Vol 56 (03) ◽  
pp. 177-182
Author(s):  
Neeraj Balaini ◽  
Manish Modi
Keyword(s):  
Central Nervous System ◽  
Cerebrospinal Fluid ◽  
Nervous System ◽  
Neurological Diseases ◽  
Neural Tissue ◽  
Retrograde Transport ◽  
Shortness Of Breath ◽  
Neurological Manifestations ◽  
Virus Rna ◽  
Viral Illness

AbstractCoronavirus disease 2019 (COVID-19) is a viral illness caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) which has taken the form of a pandemic. It mainly presents as fever, cough, shortness of breath involving respiratory system but neurological manifestations are increasingly being recognized worldwide and even virus RNA was demonstrated to be present in cerebrospinal fluid of a patient. SARS-CoV-2 involves both central nervous system and peripheral nervous system. Virus can enter the neural tissue from hematological route or through retrograde transport from nerve endings. Physicians especially neurologists should be aware regarding neurological manifestations as patient can present with these conditions in emergency. We therefore reviewed the neurological diseases or complications associated with COIVID-19 in available literature.

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