Zinc Regulates Glucose Metabolism of the Spinal Cord and Neurons and Promotes Functional Recovery after Spinal Cord Injury through the AMPK Signaling Pathway

Spinal cord injury (SCI) is a traumatic disease that can cause severe nervous system dysfunction. SCI often causes spinal cord mitochondrial dysfunction and produces glucose metabolism disorders, which affect neuronal survival. Zinc is an essential trace element in the human body and plays multiple...

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Veröffentlicht in:Oxidative medicine and cellular longevity 2021, Vol.2021 (1), p.4331625-4331625
Hauptverfasser: Hu, Hengshuo, Xia, Nan, Lin, Jiaquan, Li, Daoyong, Zhang, Chuanjie, Ge, Minghao, Tian, He, Mei, Xifan
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container_title Oxidative medicine and cellular longevity
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creator Hu, Hengshuo
Xia, Nan
Lin, Jiaquan
Li, Daoyong
Zhang, Chuanjie
Ge, Minghao
Tian, He
Mei, Xifan
description Spinal cord injury (SCI) is a traumatic disease that can cause severe nervous system dysfunction. SCI often causes spinal cord mitochondrial dysfunction and produces glucose metabolism disorders, which affect neuronal survival. Zinc is an essential trace element in the human body and plays multiple roles in the nervous system. This experiment is intended to evaluate whether zinc can regulate the spinal cord and neuronal glucose metabolism and promote motor functional recovery after SCI. Then we explore its molecular mechanism. We evaluated the function of zinc from the aspects of glucose uptake and the protection of the mitochondria in vivo and in vitro. The results showed that zinc elevated the expression level of GLUT4 and promoted glucose uptake. Zinc enhanced the expression of proteins such as PGC-1α and NRF2, reduced oxidative stress, and promoted mitochondrial production. In addition, zinc decreased neuronal apoptosis and promoted the recovery of motor function in SCI mice. After administration of AMPK inhibitor, the therapeutic effect of zinc was reversed. Therefore, we concluded that zinc regulated the glucose metabolism of the spinal cord and neurons and promoted functional recovery after SCI through the AMPK pathway, which is expected to become a potential treatment strategy for SCI.
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SCI often causes spinal cord mitochondrial dysfunction and produces glucose metabolism disorders, which affect neuronal survival. Zinc is an essential trace element in the human body and plays multiple roles in the nervous system. This experiment is intended to evaluate whether zinc can regulate the spinal cord and neuronal glucose metabolism and promote motor functional recovery after SCI. Then we explore its molecular mechanism. We evaluated the function of zinc from the aspects of glucose uptake and the protection of the mitochondria in vivo and in vitro. The results showed that zinc elevated the expression level of GLUT4 and promoted glucose uptake. Zinc enhanced the expression of proteins such as PGC-1α and NRF2, reduced oxidative stress, and promoted mitochondrial production. In addition, zinc decreased neuronal apoptosis and promoted the recovery of motor function in SCI mice. After administration of AMPK inhibitor, the therapeutic effect of zinc was reversed. 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This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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SCI often causes spinal cord mitochondrial dysfunction and produces glucose metabolism disorders, which affect neuronal survival. Zinc is an essential trace element in the human body and plays multiple roles in the nervous system. This experiment is intended to evaluate whether zinc can regulate the spinal cord and neuronal glucose metabolism and promote motor functional recovery after SCI. Then we explore its molecular mechanism. We evaluated the function of zinc from the aspects of glucose uptake and the protection of the mitochondria in vivo and in vitro. The results showed that zinc elevated the expression level of GLUT4 and promoted glucose uptake. Zinc enhanced the expression of proteins such as PGC-1α and NRF2, reduced oxidative stress, and promoted mitochondrial production. In addition, zinc decreased neuronal apoptosis and promoted the recovery of motor function in SCI mice. After administration of AMPK inhibitor, the therapeutic effect of zinc was reversed. 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subjects Adenylate Kinase - metabolism
Animals
Apoptosis
Contusions
Female
Glucose
Glucose - metabolism
Glucose Transporter Type 4 - metabolism
Hypoxia
Ischemia
Kinases
Male
Metabolic disorders
Mice
Mice, Inbred C57BL
Mitochondria
Mitochondria - drug effects
Mitochondria - metabolism
Nervous system
Neurons - drug effects
Neurons - metabolism
NF-E2-Related Factor 2 - metabolism
Oxidative stress
PC12 Cells
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha - metabolism
Rats
Signal Transduction
Spinal Cord - cytology
Spinal Cord - metabolism
Spinal Cord - physiology
Spinal cord injuries
Spinal Cord Injuries - drug therapy
Spinal Cord Injuries - metabolism
Spinal Cord Regeneration
Zinc - pharmacology
Zinc - therapeutic use
title Zinc Regulates Glucose Metabolism of the Spinal Cord and Neurons and Promotes Functional Recovery after Spinal Cord Injury through the AMPK Signaling Pathway
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