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Ginsenoside-Rg1 attenuates sepsis-induced cardiac dysfunction by modulating mitochondrial damage via the P2X7 receptor-mediated Akt/GSK-3β signaling pathway. 2022

Zhengyu Liu, and Hongwei Pan, and Yixiong Zhang, and Zhaofen Zheng, and Weiwei Xiao, and Xiuqin Hong, and Fang Chen, and Xiang Peng, and Yanfang Pei, and Jingjing Rong, and Jin He, and Lianhong Zou, and Jia Wang, and Jie Zhong, and Xiaotong Han, and Yan Cao
Cardiology Department, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China.

Ginsenoside-Rg1 (G-Rg1), a saponin that is a primary component of ginseng, is effective against inflammatory diseases. The P2X purinoceptor 7 (P2X7) receptor is an ATP-gated ion channel that is predominantly expressed in immune cells and plays a key role in inflammatory processes. We investigated the role of G-Rg1 in sepsis-related cardiac dysfunction and the underlying mechanism involving the regulation of the P2X7 receptor. We detected cell viability, cytotoxicity, cellular reactive oxygen species (ROS) levels, and mitochondrial membrane potential (MMP) with or without G-Rg1 in lipopolysaccharide (LPS)- or hypoxia/reoxygenation (H/R)-induced H9c2 cell models of ischemia/reperfusion injury. We applied cecal ligation and puncture (CLP) to induce a mouse model of sepsis and measured the survival duration and cardiac function of CLP mice. Next, we quantified the ROS level, MMP, respiratory chain complex I-IV enzymatic activity, and mitochondrial fusion in CLP mouse heart tissues. We then investigated the role of G-Rg1 in repairing LPS-induced cell mitochondrial damage, including mitochondrial superoxidation products. The results showed that G-Rg1 inhibited LPS- or H/R-induced cardiomyocyte apoptosis, cytotoxicity, ROS levels, and mitochondrial damage. In addition, G-Rg1 prolonged the survival time of CLP mice. G-Rg1 attenuated LPS-induced superoxide production in the mitochondria of cardiomyocytes and the excessive release of cytochrome c from mitochondria into the cytoplasm. Most importantly, G-Rg1 suppressed LPS-mediated induction of proapoptotic Bax, activated Akt, induced GSK-3β phosphorylation, and balanced mitochondrial calcium levels. Overall, G-Rg1 activates the Akt/GSK-3β pathway through P2X7 receptors to inhibit sepsis-induced cardiac dysfunction and mitochondrial dysfunction.

UI MeSH Term Description Entries
D008929 Mitochondria, Heart The mitochondria of the myocardium. Heart Mitochondria,Myocardial Mitochondria,Mitochondrion, Heart,Heart Mitochondrion,Mitochondria, Myocardial
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D006331 Heart Diseases Pathological conditions involving the HEART including its structural and functional abnormalities. Cardiac Disorders,Heart Disorders,Cardiac Diseases,Cardiac Disease,Cardiac Disorder,Heart Disease,Heart Disorder
D000071679 Glycogen Synthase Kinase 3 beta A glycogen synthase kinase-3 type enzyme that functions in ENERGY METABOLISM; EMBRYONIC DEVELOPMENT; and NEUROGENESIS. It is also involved in PROTEIN BIOSYNTHESIS and regulates cell growth and proliferation as a component of the WNT SIGNALING PATHWAY and other signaling pathways. Certain polymorphisms in the GSK3B gene have been associated with PARKINSON DISEASE; ALZHEIMER DISEASE; and BIPOLAR DISORDER. GSK-3beta,GSK3B Protein,GSK3beta,GSK 3beta
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015398 Signal Transduction The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway. Cell Signaling,Receptor-Mediated Signal Transduction,Signal Pathways,Receptor Mediated Signal Transduction,Signal Transduction Pathways,Signal Transduction Systems,Pathway, Signal,Pathway, Signal Transduction,Pathways, Signal,Pathways, Signal Transduction,Receptor-Mediated Signal Transductions,Signal Pathway,Signal Transduction Pathway,Signal Transduction System,Signal Transduction, Receptor-Mediated,Signal Transductions,Signal Transductions, Receptor-Mediated,System, Signal Transduction,Systems, Signal Transduction,Transduction, Signal,Transductions, Signal
D051057 Proto-Oncogene Proteins c-akt Protein-serine-threonine kinases that contain PLECKSTRIN HOMOLOGY DOMAINS and are activated by PHOSPHORYLATION in response to GROWTH FACTORS or INSULIN. They play a major role in cell metabolism, growth, and survival as a core component of SIGNAL TRANSDUCTION. Three isoforms have been described in mammalian cells. akt Proto-Oncogene Protein,c-akt Protein,AKT1 Protein Kinase,AKT2 Protein Kinase,AKT3 Protein Kinase,Akt-alpha Protein,Akt-beta Protein,Akt-gamma Protein,Protein Kinase B,Protein Kinase B alpha,Protein Kinase B beta,Protein Kinase B gamma,Protein-Serine-Threonine Kinase (Rac),Proto-Oncogene Protein Akt,Proto-Oncogene Protein RAC,Proto-Oncogene Proteins c-akt1,Proto-Oncogene Proteins c-akt2,Proto-Oncogene Proteins c-akt3,RAC-PK Protein,Rac Protein Kinase,Rac-PK alpha Protein,Rac-PK beta Protein,Related to A and C-Protein,c-akt Proto-Oncogene Protein,Akt alpha Protein,Akt beta Protein,Akt gamma Protein,Akt, Proto-Oncogene Protein,Protein, akt Proto-Oncogene,Protein, c-akt Proto-Oncogene,Proteins c-akt1, Proto-Oncogene,Proteins c-akt2, Proto-Oncogene,Proteins c-akt3, Proto-Oncogene,Proto Oncogene Protein Akt,Proto Oncogene Protein RAC,Proto Oncogene Proteins c akt,Proto Oncogene Proteins c akt1,Proto Oncogene Proteins c akt2,Proto Oncogene Proteins c akt3,Proto-Oncogene Protein, akt,Proto-Oncogene Protein, c-akt,RAC PK Protein,RAC, Proto-Oncogene Protein,Rac PK alpha Protein,Rac PK beta Protein,Related to A and C Protein,akt Proto Oncogene Protein,alpha Protein, Rac-PK,c akt Proto Oncogene Protein,c-akt, Proto-Oncogene Proteins,c-akt1, Proto-Oncogene Proteins,c-akt2, Proto-Oncogene Proteins,c-akt3, Proto-Oncogene Proteins
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D058486 Receptors, Purinergic P2X7 A purinergic P2X neurotransmitter receptor that plays a role in pain sensation signaling and regulation of inflammatory processes. Purinergic P2X7 Receptor,P2X7 Purinoceptor,P2X7 Purinoceptors,P2X7 Receptor,P2Z Receptor,Purinergic Receptor P2X, Ligand-Gated Ion Channel, 7,Purinoceptor P2Z,P2X7 Receptor, Purinergic,P2X7 Receptors, Purinergic,P2Z, Purinoceptor,Purinergic P2X7 Receptors,Purinoceptor, P2X7,Purinoceptors, P2X7,Receptor, Purinergic P2X7

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