Glutathione in Brain Disorders and Aging

Glutathione is a remarkably functional molecule with diverse features, which include being an antioxidant, a regulator of DNA synthesis and repair, a protector of thiol groups in proteins, a stabilizer of cell membranes, and a detoxifier of xenobiotics. Glutathione exists in two states—oxidized and...

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Main Authors: Igor Y. Iskusnykh, Anastasia A. Zakharova, Dhruba Pathak
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/27/1/324
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author Igor Y. Iskusnykh
Anastasia A. Zakharova
Dhruba Pathak
author_facet Igor Y. Iskusnykh
Anastasia A. Zakharova
Dhruba Pathak
author_sort Igor Y. Iskusnykh
collection DOAJ
description Glutathione is a remarkably functional molecule with diverse features, which include being an antioxidant, a regulator of DNA synthesis and repair, a protector of thiol groups in proteins, a stabilizer of cell membranes, and a detoxifier of xenobiotics. Glutathione exists in two states—oxidized and reduced. Under normal physiological conditions of cellular homeostasis, glutathione remains primarily in its reduced form. However, many metabolic pathways involve oxidization of glutathione, resulting in an imbalance in cellular homeostasis. Impairment of glutathione function in the brain is linked to loss of neurons during the aging process or as the result of neurological diseases such as Huntington’s disease, Parkinson’s disease, stroke, and Alzheimer’s disease. The exact mechanisms through which glutathione regulates brain metabolism are not well understood. In this review, we will highlight the common signaling cascades that regulate glutathione in neurons and glia, its functions as a neuronal regulator in homeostasis and metabolism, and finally a mechanistic recapitulation of glutathione signaling. Together, these will put glutathione’s role in normal aging and neurological disorders development into perspective.
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spelling doaj.art-df9da3a3aa8a4df29ac64f5fffed7afb2023-11-23T12:00:02ZengMDPI AGMolecules1420-30492022-01-0127132410.3390/molecules27010324Glutathione in Brain Disorders and AgingIgor Y. Iskusnykh0Anastasia A. Zakharova1Dhruba Pathak2Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN 38163, USADepartment of Medical Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, Ostrovitianov St. 1, 117997 Moscow, RussiaDepartment of Psychology, Temple University, Philadelphia, PA 19122, USAGlutathione is a remarkably functional molecule with diverse features, which include being an antioxidant, a regulator of DNA synthesis and repair, a protector of thiol groups in proteins, a stabilizer of cell membranes, and a detoxifier of xenobiotics. Glutathione exists in two states—oxidized and reduced. Under normal physiological conditions of cellular homeostasis, glutathione remains primarily in its reduced form. However, many metabolic pathways involve oxidization of glutathione, resulting in an imbalance in cellular homeostasis. Impairment of glutathione function in the brain is linked to loss of neurons during the aging process or as the result of neurological diseases such as Huntington’s disease, Parkinson’s disease, stroke, and Alzheimer’s disease. The exact mechanisms through which glutathione regulates brain metabolism are not well understood. In this review, we will highlight the common signaling cascades that regulate glutathione in neurons and glia, its functions as a neuronal regulator in homeostasis and metabolism, and finally a mechanistic recapitulation of glutathione signaling. Together, these will put glutathione’s role in normal aging and neurological disorders development into perspective.https://www.mdpi.com/1420-3049/27/1/324glutathionebrainagingdisordersneuron
spellingShingle Igor Y. Iskusnykh
Anastasia A. Zakharova
Dhruba Pathak
Glutathione in Brain Disorders and Aging
Molecules
glutathione
brain
aging
disorders
neuron
title Glutathione in Brain Disorders and Aging
title_full Glutathione in Brain Disorders and Aging
title_fullStr Glutathione in Brain Disorders and Aging
title_full_unstemmed Glutathione in Brain Disorders and Aging
title_short Glutathione in Brain Disorders and Aging
title_sort glutathione in brain disorders and aging
topic glutathione
brain
aging
disorders
neuron
url https://www.mdpi.com/1420-3049/27/1/324
work_keys_str_mv AT igoryiskusnykh glutathioneinbraindisordersandaging
AT anastasiaazakharova glutathioneinbraindisordersandaging
AT dhrubapathak glutathioneinbraindisordersandaging