Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways

ObjectiveThe aim of this study was to eluc\idate the preventive and therapeutic effects and the underlying mechanisms of Huoxue Huatan Decoction (HXHT) on myocardial ischemia/reperfusion (I/R) injury in hyperlipidemic rats.MethodsAn I/R model was established in hyperlipidemic Wistar rats. After 4–8...

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Main Authors: Fei Lin, Yu-Qing Tan, Xuan-Hui He, Li-Li Guo, Ben-Jun Wei, Jun-Ping Li, Zhong Chen, Heng-Wen Chen, Jie Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-09-01
Series:Frontiers in Pharmacology
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fphar.2020.546825/full
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author Fei Lin
Yu-Qing Tan
Yu-Qing Tan
Xuan-Hui He
Li-Li Guo
Ben-Jun Wei
Jun-Ping Li
Zhong Chen
Heng-Wen Chen
Jie Wang
author_facet Fei Lin
Yu-Qing Tan
Yu-Qing Tan
Xuan-Hui He
Li-Li Guo
Ben-Jun Wei
Jun-Ping Li
Zhong Chen
Heng-Wen Chen
Jie Wang
author_sort Fei Lin
collection DOAJ
description ObjectiveThe aim of this study was to eluc\idate the preventive and therapeutic effects and the underlying mechanisms of Huoxue Huatan Decoction (HXHT) on myocardial ischemia/reperfusion (I/R) injury in hyperlipidemic rats.MethodsAn I/R model was established in hyperlipidemic Wistar rats. After 4–8 weeks of HXHT treatment, the physical signs of rats were observed. Lipid metabolism, myocardial enzyme spectrum, cardiac function, myocardial histomorphology, and mitochondrial biosynthesis were investigated by a biochemical method, ultrasonography, electron microscopy, pathological examination, real-time PCR, and Western blot.ResultsHXHT can affect lipid metabolism at different time points and significantly reduce the levels of cholesterol (CHO), triglyceride (TG), high-density lipid-cholesterol (HDL-C), and low-density lipid-cholesterol (LDL-C) in hyperlipidemic rats (P < 0.05 or P < 0.01); it can significantly reduce the levels of creatine kinase-MB (CK-MB) and lactate dehydrogenase (LDH), reduce the myocardial infarct size and myocardial ischemic area, and improve cardiac function. The results of myocardial histomorphology showed that HXHT could protect myocardial cells, relieve swelling, reduce the number of cardiac lipid droplets, and improve myocardial mitochondrial function. HXHT could significantly increase the levels of total superoxide dismutase (T-SOD) and succinate dehydrogenase (SDH) (P < 0.05 or P < 0.01), increase CuZn-superoxide dismutase (CuZn-SOD) and glutathione-peroxidase (GSH-Px) levels, and decrease the levels of malondialdehyde (MDA) (P < 0.05); it could increase the mRNA and protein expression levels of peroxisome proliferator-activated receptor-gamma coactivator 1 alpha (PGC-1α), peroxisome proliferator-activated receptor alpha (PPARα), nuclear respiratory factor 1 (NRF1), and mitochondrial transcription factor A (mtTFA) (P < 0.05 or P < 0.01), and increase the synthesis of mitochondrial DNA (mtDNA) (P < 0.01).ConclusionHXHT can reduce myocardial I/R injury in hyperlipidemic rats. The protective mechanisms may involve a reduction in blood lipids, enhancement of PGC-1α–PPARα pathway activity, and, subsequently, an increase in fatty acid β-oxidation, which may provide the required input for mitochondrial energy metabolism. HXHT can additionally enhance PGC-1α–NRF1–mtTFA pathway activity and, subsequently, increase the antioxidant capacity, promote mtDNA synthesis, and reduce mitochondrial damage. The two pathways use PGC-1α as the intersection point to protect mitochondrial structure and function, reduce I/R-induced injury, and improve cardiac function.
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spelling doaj.art-3038a45a81f34ee79abab4f20352b67a2022-12-21T19:01:42ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122020-09-011110.3389/fphar.2020.546825546825Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA PathwaysFei Lin0Yu-Qing Tan1Yu-Qing Tan2Xuan-Hui He3Li-Li Guo4Ben-Jun Wei5Jun-Ping Li6Zhong Chen7Heng-Wen Chen8Jie Wang9Heart Center of Xinxiang Medical University, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaGraduate School, Beijing University of Chinese Medicine, Beijing, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaKey Laboratory of Ministry of Education Department of Lanzhou Province and Dunhuang Medical Transformation, Gansu University of Chinese Medicine, Lanzhou, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaDepartment of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, ChinaObjectiveThe aim of this study was to eluc\idate the preventive and therapeutic effects and the underlying mechanisms of Huoxue Huatan Decoction (HXHT) on myocardial ischemia/reperfusion (I/R) injury in hyperlipidemic rats.MethodsAn I/R model was established in hyperlipidemic Wistar rats. After 4–8 weeks of HXHT treatment, the physical signs of rats were observed. Lipid metabolism, myocardial enzyme spectrum, cardiac function, myocardial histomorphology, and mitochondrial biosynthesis were investigated by a biochemical method, ultrasonography, electron microscopy, pathological examination, real-time PCR, and Western blot.ResultsHXHT can affect lipid metabolism at different time points and significantly reduce the levels of cholesterol (CHO), triglyceride (TG), high-density lipid-cholesterol (HDL-C), and low-density lipid-cholesterol (LDL-C) in hyperlipidemic rats (P < 0.05 or P < 0.01); it can significantly reduce the levels of creatine kinase-MB (CK-MB) and lactate dehydrogenase (LDH), reduce the myocardial infarct size and myocardial ischemic area, and improve cardiac function. The results of myocardial histomorphology showed that HXHT could protect myocardial cells, relieve swelling, reduce the number of cardiac lipid droplets, and improve myocardial mitochondrial function. HXHT could significantly increase the levels of total superoxide dismutase (T-SOD) and succinate dehydrogenase (SDH) (P < 0.05 or P < 0.01), increase CuZn-superoxide dismutase (CuZn-SOD) and glutathione-peroxidase (GSH-Px) levels, and decrease the levels of malondialdehyde (MDA) (P < 0.05); it could increase the mRNA and protein expression levels of peroxisome proliferator-activated receptor-gamma coactivator 1 alpha (PGC-1α), peroxisome proliferator-activated receptor alpha (PPARα), nuclear respiratory factor 1 (NRF1), and mitochondrial transcription factor A (mtTFA) (P < 0.05 or P < 0.01), and increase the synthesis of mitochondrial DNA (mtDNA) (P < 0.01).ConclusionHXHT can reduce myocardial I/R injury in hyperlipidemic rats. The protective mechanisms may involve a reduction in blood lipids, enhancement of PGC-1α–PPARα pathway activity, and, subsequently, an increase in fatty acid β-oxidation, which may provide the required input for mitochondrial energy metabolism. HXHT can additionally enhance PGC-1α–NRF1–mtTFA pathway activity and, subsequently, increase the antioxidant capacity, promote mtDNA synthesis, and reduce mitochondrial damage. The two pathways use PGC-1α as the intersection point to protect mitochondrial structure and function, reduce I/R-induced injury, and improve cardiac function.https://www.frontiersin.org/article/10.3389/fphar.2020.546825/fullHuoxue Huatan Decoctionhyperlipidemiaischemia/reperfusion (I/R)mitochondriaPGC-1α
spellingShingle Fei Lin
Yu-Qing Tan
Yu-Qing Tan
Xuan-Hui He
Li-Li Guo
Ben-Jun Wei
Jun-Ping Li
Zhong Chen
Heng-Wen Chen
Jie Wang
Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
Frontiers in Pharmacology
Huoxue Huatan Decoction
hyperlipidemia
ischemia/reperfusion (I/R)
mitochondria
PGC-1α
title Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
title_full Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
title_fullStr Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
title_full_unstemmed Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
title_short Huoxue Huatan Decoction Ameliorates Myocardial Ischemia/Reperfusion Injury in Hyperlipidemic Rats via PGC-1α–PPARα and PGC-1α–NRF1–mtTFA Pathways
title_sort huoxue huatan decoction ameliorates myocardial ischemia reperfusion injury in hyperlipidemic rats via pgc 1α pparα and pgc 1α nrf1 mttfa pathways
topic Huoxue Huatan Decoction
hyperlipidemia
ischemia/reperfusion (I/R)
mitochondria
PGC-1α
url https://www.frontiersin.org/article/10.3389/fphar.2020.546825/full
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