scholarly journals Emerging Synaptic Molecules as Candidates in the Etiology of Neurological Disorders

2017 ◽  
Vol 2017 ◽  
pp. 1-25 ◽  
Author(s):  
Viviana I. Torres ◽  
Daniela Vallejo ◽  
Nibaldo C. Inestrosa
Keyword(s):  
Central Nervous System ◽  
Neurological Disorders ◽  
Neuronal Development ◽  
Protein Complexes ◽  
Synaptic Proteins ◽  
Excitatory Synapses ◽  
Complex Structures ◽  
Disease Phenotype ◽  
The Central Nervous System ◽  
Invertebrate Models

Synapses are complex structures that allow communication between neurons in the central nervous system. Studies conducted in vertebrate and invertebrate models have contributed to the knowledge of the function of synaptic proteins. The functional synapse requires numerous protein complexes with specialized functions that are regulated in space and time to allow synaptic plasticity. However, their interplay during neuronal development, learning, and memory is poorly understood. Accumulating evidence links synapse proteins to neurodevelopmental, neuropsychiatric, and neurodegenerative diseases. In this review, we describe the way in which several proteins that participate in cell adhesion, scaffolding, exocytosis, and neurotransmitter reception from presynaptic and postsynaptic compartments, mainly from excitatory synapses, have been associated with several synaptopathies, and we relate their functions to the disease phenotype.

scholarly journals Meningitis Caused by Salmonella Newport in a Five-Year-Old Child

2016 ◽  
Vol 2016 ◽  
pp. 1-4
Author(s):  
Ana De Malet ◽  
Sheila Ingerto ◽  
Israel Gañán
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Neurological Disorders ◽  
Invasive Disease ◽  
Salmonella Typhi ◽  
Gram Negative ◽  
Negative Bacillus ◽  
Salmonella Newport ◽  
Gram Negative Bacillus ◽  
The Central Nervous System

Salmonella Newport is a Gram-negative bacillus belonging to the Enterobacteria family and the nontyphi Salmonella (NTS), usually related to gastroenteritis. Main difference between NTS and Salmonella typhi is that the last one evolves to an invasive disease easier than NTS. These can progress to bacteremias in around 5% of cases and secondary focuses can appear occasionally, as in meningitis. An infection of the central nervous system is uncommon, considering its incidence in 0.6–8% of the cases; most of them are described in developing countries and mainly in childhood, especially neonates. Bacterial meningitis by NTS mostly affects immunosuppressed people in Europe. Prognosis is adverse, with a 50% mortality rate, mainly due to complications of infection: hydrocephalus, ventriculitis, abscesses, subdural empyema, or stroke. Choice antibiotic treatments are cefotaxime, ceftriaxone, or ceftazidime. The aim of this paper is to present a case of meningitis caused by Salmonella Newport diagnosed in a five-year-old girl living in a rural area of the province of Ourense (Spain), with favorable evolution and without neurological disorders.

scholarly journals Insights Into the Role of CSF1R in the Central Nervous System and Neurological Disorders

2021 ◽  
Vol 13 ◽  
Author(s):  
Banglian Hu ◽  
Shengshun Duan ◽  
Ziwei Wang ◽  
Xin Li ◽  
Yuhang Zhou ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Neurological Disorders ◽  
Neurological Diseases ◽  
Colony Stimulating Factor ◽  
Loss Of Function ◽  
Axonal Spheroids ◽  
The Central Nervous System ◽  
Stimulating Factor

The colony-stimulating factor 1 receptor (CSF1R) is a key tyrosine kinase transmembrane receptor modulating microglial homeostasis, neurogenesis, and neuronal survival in the central nervous system (CNS). CSF1R, which can be proteolytically cleaved into a soluble ectodomain and an intracellular protein fragment, supports the survival of myeloid cells upon activation by two ligands, colony stimulating factor 1 and interleukin 34. CSF1R loss-of-function mutations are the major cause of adult-onset leukoencephalopathy with axonal spheroids and pigmented glia (ALSP) and its dysfunction has also been implicated in other neurodegenerative disorders including Alzheimer’s disease (AD). Here, we review the physiological functions of CSF1R in the CNS and its pathological effects in neurological disorders including ALSP, AD, frontotemporal dementia and multiple sclerosis. Understanding the pathophysiology of CSF1R is critical for developing targeted therapies for related neurological diseases.

scholarly journals Niacin in the Central Nervous System: An Update of Biological Aspects and Clinical Applications

2019 ◽  
Vol 20 (4) ◽  
pp. 974 ◽  
Author(s):  
Valeria Gasperi ◽  
Matteo Sibilano ◽  
Isabella Savini ◽  
Maria Catani
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Nicotinamide Adenine Dinucleotide ◽  
Cell Cycle Progression ◽  
Neuronal Development ◽  
Nicotinamide Adenine Dinucleotide Phosphate ◽  
Nicotinamide Adenine ◽  
Vitamin B3 ◽  
Traumatic Injuries ◽  
The Central Nervous System

Niacin (also known as “vitamin B3” or “vitamin PP”) includes two vitamers (nicotinic acid and nicotinamide) giving rise to the coenzymatic forms nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP). The two coenzymes are required for oxidative reactions crucial for energy production, but they are also substrates for enzymes involved in non-redox signaling pathways, thus regulating biological functions, including gene expression, cell cycle progression, DNA repair and cell death. In the central nervous system, vitamin B3 has long been recognized as a key mediator of neuronal development and survival. Here, we will overview available literature data on the neuroprotective role of niacin and its derivatives, especially focusing especially on its involvement in neurodegenerative diseases (Alzheimer’s, Parkinson’s, and Huntington’s diseases), as well as in other neuropathological conditions (ischemic and traumatic injuries, headache and psychiatric disorders).

scholarly journals Death of developing neurons: New insights and implications for connectivity

2013 ◽  
Vol 203 (3) ◽  
pp. 385-393 ◽  
Author(s):  
Martijn P.J. Dekkers ◽  
Vassiliki Nikoletopoulou ◽  
Yves-Alain Barde
Keyword(s):  
Central Nervous System ◽  
Cell Death ◽  
Nervous System ◽  
Growth Factors ◽  
Axonal Degeneration ◽  
Neuronal Development ◽  
Critical Role ◽  
Synaptic Function ◽  
The Central Nervous System ◽  
Developing Neurons

The concept that target tissues determine the survival of neurons has inspired much of the thinking on neuronal development in vertebrates, not least because it is supported by decades of research on nerve growth factor (NGF) in the peripheral nervous system (PNS). Recent discoveries now help to understand why only some developing neurons selectively depend on NGF. They also indicate that the survival of most neurons in the central nervous system (CNS) is not simply regulated by single growth factors like in the PNS. Additionally, components of the cell death machinery have begun to be recognized as regulators of selective axonal degeneration and synaptic function, thus playing a critical role in wiring up the nervous system.

scholarly journals Tissue-Specificity of Antibodies Raised Against TrkB and p75NTR Receptors; Implications for Platelets as Models of Neurodegenerative Diseases

2021 ◽  
Vol 12 ◽  
Author(s):  
Samuel Fleury ◽  
Imane Boukhatem ◽  
Jessica Le Blanc ◽  
Mélanie Welman ◽  
Marie Lordkipanidzé
Keyword(s):  
Central Nervous System ◽  
Neurological Disorders ◽  
Blood Circulation ◽  
Tissue Specificity ◽  
Receptor Kinase ◽  
Calcium Dependent ◽  
Neuronal Growth Factor ◽  
The Central Nervous System ◽  
The Brain

Platelets and neurons share many similarities including comparable secretory granule types with homologous calcium-dependent secretory mechanisms as well as internalization, sequestration and secretion of many neurotransmitters. Thus, platelets present a high potential to be used as peripheral biomarkers to reflect neuronal pathologies. The brain-derived neurotrophic factor (BDNF) acts as a neuronal growth factor involved in learning and memory through the binding of two receptors, the tropomyosin receptor kinase B (TrkB) and the 75 kDa pan-neurotrophic receptor (p75NTR). In addition to its expression in the central nervous system, BDNF is found in much greater quantities in blood circulation, where it is largely stored within platelets. Levels 100- to 1,000-fold those of neurons make platelets the most important peripheral reservoir of BDNF. This led us to hypothesize that platelets would express canonical BDNF receptors, i.e., TrkB and p75NTR, and that the receptors on platelets would bear significant resemblance to the ones found in the brain. However, herein we report discrepancies regarding detection of these receptors using antibody-based assays, with antibodies displaying important tissue-specificity. The currently available antibodies raised against TrkB and p75NTR should therefore be used with caution to study platelets as models for neurological disorders. Rigorous characterization of antibodies and bioassays appears critical to understand the interplay between platelet and neuronal biology of BDNF.

scholarly journals Features of nervous system damage in antiphospholipid syndrome

2021 ◽  
Vol 15 (4) ◽  
pp. 404-414
Author(s):  
O. N. Voskresenskaya ◽  
V. O. Bitsadze ◽  
J. Kh. Khizroeva ◽  
T. A. Sukontseva ◽  
M. V. Tretyakova ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Antiphospholipid Syndrome ◽  
Neurological Disorders ◽  
Molecular Mimicry ◽  
Transverse Myelitis ◽  
Autoimmune Process ◽  
The Central Nervous System ◽  
Interdisciplinary Interaction

Antiphospholipid syndrome (APS) is an autoimmune process that increases the risk of arterial and venous thrombosis. The mechanism of damage to the central nervous system (CNS) can be not only due to thrombosis, but also antiphospholipid antibodies (APA) circulating in the peripheral blood. The latter can damage the cerebral vascular endothelium, alter the resistance of the blood-brain barrier and penetrate into the central nervous system, exerting a damaging effect on astroglia and neurons, as evidenced by the release of neurospecific proteins into the peripheral bloodstream. The role of APS in developing cerebral ischemia, migraine, epilepsy, chorea, transverse myelitis, multiple sclerosis, cognitive impairment and mental disorders, as well as the peripheral nervous system is described. It should also be noted about a role of APS for emerging neurological disorders in COVID-19, enabled apart from thrombogenesis due to APA via 2 potential mechanisms - molecular mimicry and neoepitope formation. Further study of the APS pathogenesis and interdisciplinary interaction are necessary to develop effective methods for patient management.

scholarly journals Sirtuin 2 (SIRT2): Confusing Roles in the Pathophysiology of Neurological Disorders

2021 ◽  
Vol 15 ◽  
Author(s):  
Xiuqi Chen ◽  
Wenmei Lu ◽  
Danhong Wu
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Rapid Growth ◽  
Nicotinamide Adenine Dinucleotide ◽  
Neurological Disorders ◽  
Potential Role ◽  
Therapeutic Strategies ◽  
Nicotinamide Adenine ◽  
The Central Nervous System ◽  
The Brain

As a type of nicotinamide adenine dinucleotide (NAD+)-dependent deacetylases, sirtuin 2 (SIRT2) is predominantly found in the cytoplasm of cells in the central nervous system (CNS), suggesting its potential role in neurological disorders. Though SIRT2 is generally acknowledged to accelerate the development of neurological pathologies, it protects the brain from deterioration in certain circumstances. This review summarized the complex roles SIRT2 plays in the pathophysiology of diverse neurological disorders, compared and analyzed the discrete roles of SIRT2 in different conditions, and provided possible explanations for its paradoxical functions. In the future, the rapid growth in SIRT2 research may clarify its impacts on neurological disorders and develop therapeutic strategies targeting this protein.

scholarly journals Extracellular Vesicles: Novel Roles in Neurological Disorders

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Qian Jin ◽  
Peipei Wu ◽  
Xinru Zhou ◽  
Hui Qian ◽  
Wenrong Xu
Keyword(s):  
Central Nervous System ◽  
Extracellular Vesicles ◽  
Neurological Disorders ◽  
Unique Feature ◽  
Cns Development ◽  
Diagnostic Biomarkers ◽  
Pathological Conditions ◽  
The Central Nervous System ◽  
Therapeutic Tools ◽  
Almost All

Exosomes are small extracellular vesicles (EVs) secreted by almost all cells, which have been recognized as a novel platform for intercellular communication in the central nervous system (CNS). Exosomes are capable of transferring proteins, nucleic acids, lipids, and metabolites between neurons and glial cells, contributing to CNS development and maintenance of homeostasis. Evidence shows that exosomes originating from CNS cells act as suppressors or promoters in the initiation and progression of neurological disorders. Moreover, these exosomes have been shown to transfer molecules associated with diseases through the blood-brain barrier (BBB) and thus can be detected in blood. This unique feature enables exosomes to act as potential diagnostic biomarkers for neurological disorders. In addition, a substantial number of researches have indicated that exosomes derived from mesenchymal stem cells (MSCs) have repair effects on neurological disorders. Herein, we briefly introduce the roles of exosomes under physiological and pathological conditions. In particular, novel roles of exosomes as potential diagnostic biomarkers and therapeutic tools for neurological disorders are highlighted.

scholarly journals Clinical and biochemical predictors of neurological disorders

2020 ◽  
Vol 4 (35) ◽  
pp. 34-39
Author(s):  
I. Yu. Serikova ◽  
G. I. Shumacher ◽  
E. N. Vorobyova ◽  
I. A. Batanina ◽  
R. I. Vorobyov
Keyword(s):  
Lipid Peroxidation ◽  
Central Nervous System ◽  
Nervous System ◽  
Neurological Disorders ◽  
Protein S ◽  
Nerve Tissue ◽  
S 100 ◽  
The Central Nervous System ◽  
Peroxidation Processes ◽  
The City

The aim of this study is to identify clinical and biochemical predictors of neurological disorders in adolescents who have suffered mild perinatal damage of the central nervous system. We examined 120 adolescents (62 girls and 58 boys) aged 13–16 years, who were hospitalized in the city Children’s Neurological Department. It was found that adolescents with perinatal lesions of the central nervous system, activated lipid peroxidation processes and revealed an increase in the concentration of protein S 100, which in the future could lead to the development of neurodegeneration processes. In addition, a positive correlation between the lipid peroxidation processes nd the concentration of the nerve tissue damage marker was revealed. The results indicate that the level of neurospecific protein — protein S 100, parameters of the oxidant‑antioxidant system, perinatal factors can be used as predictors of chronic nervous tissue processes.

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