Free radical biology in neurological manifestations : mechanisms to therapeutics interventions

© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..

Recent advancements and growing attention about free radicals (ROS) and redox signaling enable the scientific fraternity to consider their involvement in the pathophysiology of inflammatory diseases, metabolic disorders, and neurological defects. Free radicals increase the concentration of reactive oxygen and nitrogen species in the biological system through different endogenous sources and thus increased the overall oxidative stress. An increase in oxidative stress causes cell death through different signaling mechanisms such as mitochondrial impairment, cell-cycle arrest, DNA damage response, inflammation, negative regulation of protein, and lipid peroxidation. Thus, an appropriate balance between free radicals and antioxidants becomes crucial to maintain physiological function. Since the 1brain requires high oxygen for its functioning, it is highly vulnerable to free radical generation and enhanced ROS in the brain adversely affects axonal regeneration and synaptic plasticity, which results in neuronal cell death. In addition, increased ROS in the brain alters various signaling pathways such as apoptosis, autophagy, inflammation and microglial activation, DNA damage response, and cell-cycle arrest, leading to memory and learning defects. Mounting evidence suggests the potential involvement of micro-RNAs, circular-RNAs, natural and dietary compounds, synthetic inhibitors, and heat-shock proteins as therapeutic agents to combat neurological diseases. Herein, we explain the mechanism of free radical generation and its role in mitochondrial, protein, and lipid peroxidation biology. Further, we discuss the negative role of free radicals in synaptic plasticity and axonal regeneration through the modulation of various signaling molecules and also in the involvement of free radicals in various neurological diseases and their potential therapeutic approaches. The primary cause of free radical generation is drug overdosing, industrial air pollution, toxic heavy metals, ionizing radiation, smoking, alcohol, pesticides, and ultraviolet radiation. Excessive generation of free radicals inside the cell R1Q1 increases reactive oxygen and nitrogen species, which causes oxidative damage. An increase in oxidative damage alters different cellular pathways and processes such as mitochondrial impairment, DNA damage response, cell cycle arrest, and inflammatory response, leading to pathogenesis and progression of neurodegenerative disease other neurological defects.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:29

Enthalten in:

Environmental science and pollution research international - 29(2022), 41 vom: 06. Sept., Seite 62160-62207

Sprache:

Englisch

Beteiligte Personen:

Tripathi, Rahul [VerfasserIn]
Gupta, Rohan [VerfasserIn]
Sahu, Mehar [VerfasserIn]
Srivastava, Devesh [VerfasserIn]
Das, Ankita [VerfasserIn]
Ambasta, Rashmi K [VerfasserIn]
Kumar, Pravir [VerfasserIn]

Links:

Volltext

Themen:

Antioxidants
Axonal regeneration
Cell-cycle arrest
DNA damage response
Environmental factors
Free Radicals
Free radicals
Journal Article
N762921K75
Neurological disorders
Nitrogen
Oxygen
Reactive Oxygen Species
Review
S88TT14065

Anmerkungen:

Date Completed 13.09.2022

Date Revised 13.09.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s11356-021-16693-2

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM331582783