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Zhu XX, Meng XY, Zhang AY, Zhao CY, Chang C, Chen TX, Huang YB, Xu JP, Fu X, Cai WW, Hou B, Du B, Zheng GL, Zhang JR, Lu QB, Bai N, Han ZJ, Bao N, Qiu LY, Sun HJ. Vaccarin alleviates septic cardiomyopathy by potentiating NLRP3 palmitoylation and inactivation. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 131:155771. [PMID: 38851101 DOI: 10.1016/j.phymed.2024.155771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 05/10/2024] [Accepted: 05/21/2024] [Indexed: 06/10/2024]
Abstract
BACKGROUND Sepsis often leads to significant morbidity and mortality due to severe myocardial injury. As is known, the activation of NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome crucially contributes to septic cardiomyopathy (SCM) by facilitating the secretion of interleukin (IL)-1β and IL-18. The removal of palmitoyl groups from NLRP3 is a crucial step in the activation of the NLRP3 inflammasome. Thus, the potential inhibitors that regulate the palmitoylation and inactivation of NLRP3 may significantly diminish sepsis-induced cardiac dysfunction. PURPOSE The present study sought to explore the effects of the prospective flavonoid compounds targeting NLRP3 on SCM and to elucidate the associated underlying mechanisms. STUDY DESIGN The palmitoylation and activation of NLRP3 were detected in H9c2 cells and C57BL/6 J mice. METHODS/RESULTS Echocardiography, histological staining, western blotting, co-immunoprecipitation, qPCR, ELISA and network pharmacology were used to assess the impact of vaccarin (VAC) on SCM in mice subjected to lipopolysaccharide (LPS) injection. From the collection of 74 compounds, we identified that VAC had the strongest capability to suppress NLRP3 luciferase report gene activity in cardiomyocytes, and the anti-inflammatory characteristics of VAC were further ascertained by the network pharmacology. Exposure of LPS triggered apoptosis, inflammation, oxidative stress, mitochondrial disorder in cardiomyocytes. The detrimental alterations were significantly reversed upon VAC treatment in both septic mice and H9c2 cells exposed to LPS. In vivo experiments demonstrated that VAC treatment alleviated septic myocardial injury, indicated by enhanced cardiac function parameters, preserved cardiac structure, and reduced inflammation/oxidative response. Mechanistically, VAC induced NLRP3 palmitoylation to inactivate NLRP3 inflammasome by acting on zDHHC12. In support, the NLRP3 agonist ATP and the acylation inhibitor 2-bromopalmitate (2-BP) prevented the effects of VAC. CONCLUSION Our findings suggest that VAC holds promise in protecting against SCM by mitigating cardiac oxidative stress and inflammation via priming NLRP3 palmitoylation and inactivation. These results lay the solid basis for further assessment of the therapeutic potential of VAC against SCM.
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Affiliation(s)
- Xue-Xue Zhu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Xin-Yu Meng
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Ao-Yuan Zhang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Chen-Yang Zhao
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Chang Chang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Tian-Xiao Chen
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Yan-Bo Huang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Peng Xu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Xiao Fu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Wei-Wei Cai
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Bao Hou
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Bin Du
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Guan-Li Zheng
- Department of Anesthesiology, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi 214122, PR China
| | - Ji-Ru Zhang
- Department of Anesthesiology, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi 214122, PR China
| | - Qing-Bo Lu
- Department of Endocrinology, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi 214122, PR China
| | - Ning Bai
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi 214122, PR China
| | - Zhi-Jun Han
- Department of Clinical Research Center, Jiangnan University Medical Center, Wuxi 214001, Jiangsu Province, PR China.
| | - Neng Bao
- Department of Nephrology, Affiliated Hospital of Jiangnan University, Wuxi 214125, PR China.
| | - Li-Ying Qiu
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China.
| | - Hai-Jian Sun
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, PR China.
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Cai Y, Zhang X, Yang C, Jiang Y, Chen Y. Melatonin alleviates high-fat-diet-induced dry eye by regulating macrophage polarization via IFT27 and lowering ERK/JNK phosphorylation. iScience 2024; 27:110367. [PMID: 39100927 PMCID: PMC11294704 DOI: 10.1016/j.isci.2024.110367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/03/2024] [Accepted: 06/21/2024] [Indexed: 08/06/2024] Open
Abstract
Dry eye disease is the most common ocular surface disease globally, requiring a more effective treatment. We observed that a high-fat diet induced macrophage polarization to M1 and further induced inflammation in the meibomian and lacrimal glands. A four-week treatment with melatonin (MLT) eye drops can regulate macrophage polarization and alleviate dry eye signs. To investigate the therapeutic effects and mechanisms of action of MLT on high-fat-diet-induced dry eye disease in mice, RAW 264.7 cells pretreated with LPS and/or MLT underwent digital RNA with the perturbation of genes sequencing (DRUG-seq). Results showed that IFT27 was up-regulated, and MAPK pathways were suppressed after MLT pre-treatment. ERK/JNK phosphorylation was reduced in meibomian glands of MLT-treated dry eye mice and increased in IFT27 knockdown RAW 264.7 cells. In summary, MLT regulated macrophage polarization via IFT27 and reduced ERK/JNK phosphorylation. These results support that MLT is a promising medication for dry eye disease.
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Affiliation(s)
- Yuying Cai
- Department of Ophthalmology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xin Zhang
- Department of Ophthalmology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Chuanxi Yang
- Department of Cardiology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yaping Jiang
- Department of Ophthalmology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yihui Chen
- Department of Ophthalmology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
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Xing D, Xia G, Tang X, Zhuang Z, Shan J, Fang X, Qiu L, Zha X, Chen XL. A Multifunctional Nanocomposite Hydrogel Delivery System Based on Dual-Loaded Liposomes for Scarless Wound Healing. Adv Healthc Mater 2024:e2401619. [PMID: 39011810 DOI: 10.1002/adhm.202401619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/21/2024] [Indexed: 07/17/2024]
Abstract
Increased inflammatory responses and oxidative stress at the wound site following skin trauma impair healing. Furthermore, skin scarring places fibroblasts under severe mechanical stress and aggravates pathological fibrosis. A novel liposomal composite hydrogel is engineered for wound microenvironment remodeling, incorporating dual-loaded liposomes into gelatin methacrylate to create a nanocomposite hydrogel. Notably, tetrahydrocurcumin (THC) and hepatocyte growth factor (HGF) are encapsulated in the hydrophobic and hydrophilic layers of liposomes, respectively. The composite hydrogel maintains porous nanoarchitecture, demonstrating sustainable THC and HGF release and enhanced mechanical properties and biocompatibility. This system effectively promotes cell proliferation and angiogenesis and attenuates apoptosis. It decreases the expression of the inflammatory factors by inhibiting the high-mobility group box /receptor for advanced glycation end product/NF-κB (HMGB1/RAGE/NF-κB)pathway and increases macrophage polarization from M1 to M2 in vitro, effectively controlling inflammatory responses. It exhibits remarkable antioxidant properties by scavenging excess reactive oxygen species and free radicals. Most importantly, it effectively prevents scar formation by restraining the transforming growth factor beta (TGF-β)/Smads pathway that downregulates associated fibrotic factors. It demonstrates strong therapeutic effects against inflammation and fibrosis in a rat skin wound model with biosafety, advancing the development of innovative hydrogel-based therapeutic delivery strategies for clinical scarless wound therapy.
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Affiliation(s)
- Danlei Xing
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Guoqing Xia
- Institute for Liver Diseases of Anhui Medical University, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230022, P. R. China
| | - Xudong Tang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Zhiwei Zhuang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Jie Shan
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Xiao Fang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Le Qiu
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
| | - Xiaojun Zha
- Department of Biochemistry & Molecular Biology, School of Basic Medicine, Anhui Medical University, Hefei, 230022, P. R. China
| | - Xu-Lin Chen
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, P. R. China
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Zhou M, Li R, Hua H, Dai Y, Yin Z, Li L, Zeng J, Yang M, Zhao J, Tan R. The role of tetrahydrocurcumin in disease prevention and treatment. Food Funct 2024; 15:6798-6824. [PMID: 38836693 DOI: 10.1039/d3fo05739a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
In recent decades, natural compounds derived from herbal medicine or dietary sources have played important roles in prevention and treatment of various diseases and have attracted more and more attention. Curcumin, extracted from the Curcumae Longae Rhizoma and widely used as food spice and coloring agent, has been proven to possess high pharmacological value. However, the pharmacological application of curcumin is limited due to its poor systemic bioavailability. As a major active metabolite of curcumin, tetrahydrocurcumin (THC) has higher bioavailability and stability than curcumin. Increasing evidence confirmed that THC had a wide range of biological activities and significant treatment effects on diseases. In this paper, we reviewed the research progress on the biological activities and therapeutic potential of THC on different diseases such as neurological disorders, metabolic syndromes, cancers, and inflammatory diseases. The extensive pharmacological effects of THC involve the modulation of various signaling transduction pathways including MAPK, JAK/STAT, NF-κB, Nrf2, PI3K/Akt/mTOR, AMPK, Wnt/β-catenin. In addition, the pharmacokinetics, drug combination and toxicology of THC were discussed, thus providing scientific basis for the safe application of THC and the development of its dietary supplements and drugs.
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Affiliation(s)
- Mengting Zhou
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Rui Li
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China
| | - Hua Hua
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Ying Dai
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Zhujun Yin
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Li Li
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Jin Zeng
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Mengni Yang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
| | - Junning Zhao
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
- National Key Laboratory of Drug Regulatory Science, National Medical Products Administration (NMPA), Beijing 100038, China.
| | - Ruirong Tan
- Translational Chinese Medicine Key Laboratory of Sichuan Province, State Key Laboratory of Quality Evaluation of Traditional Chinese Medicine, Sichuan Engineering Technology Research Center of Genuine Regional Drug, Sichuan Provincial Engineering Research Center of Formation Principle and Quality Evaluation of Genuine Medicinal Materials, Sichuan Institute for Translational Chinese Medicine, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China.
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Hou D, Liao H, Hao S, Liu R, Huang H, Duan C. Curcumin simultaneously improves mitochondrial dynamics and myocardial cell bioenergy after sepsis via the SIRT1-DRP1/PGC-1α pathway. Heliyon 2024; 10:e28501. [PMID: 38586339 PMCID: PMC10998060 DOI: 10.1016/j.heliyon.2024.e28501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/09/2024] Open
Abstract
Septic cardiomyopathy (SCM) is associated with an imbalance in mitochondrial quality and high mortality rates, with no effective treatment developed to date. Curcumin provides antioxidant, anti-inflammatory, cardiovascular, and mitochondrial protection. However, curcumin has not been confirmed to improve cardiac dysfunction in sepsis. We hypothesized that curcumin can reduce abnormal inflammatory responses by improving mitochondrial function as a novel mechanism to improve SCM. To explore this hypothesis, we used an in vivo male C57BL/6 mouse sepsis model and an in vitro model of lipopolysaccharide-stimulated HL-1 cells. The effects of curcumin on sepsis-induced cardiac dysfunction, inflammatory responses, and mitochondrial quality of cardiac cells were observed using quantitative polymerase chain reaction, western blotting, echocardiography, and transmission electron microscopy. Curcumin activated sirtuin 1 (SIRT1); increased expression of the mitochondrial biogenesis-related genes Pgc1α, Tfam, and Nrf2; reduced dynamin-related protein 1 translocation from the cytoplasm to mitochondria; and restored the mitochondrial morphology and function in cardiac cells. Accordingly, curcumin protected heart function after septic shock and alleviated the effects of SCM. SIRT1 knockdown reversed the protective effects of curcumin on mitochondria. Therefore, curcumin promotes mitochondrial biogenesis and inhibits mitochondrial fragmentation by activating SIRT1, thereby improving the mitochondrial quality and reducing oxidative stress in cardiomyocytes and sepsis-induced cardiac dysfunction. These findings provide new evidence supporting the use of curcumin to treat SCM.
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Affiliation(s)
- Dongyao Hou
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
- Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
| | - Haitang Liao
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
- Department of Intensive Care Unit, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400011, China
| | - Shuai Hao
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
- Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Ruixue Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - He Huang
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Chenyang Duan
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
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Cui Sun M, Otálora-Alcaraz A, Prenderville JA, Downer EJ. Toll-like receptor signalling as a cannabinoid target. Biochem Pharmacol 2024; 222:116082. [PMID: 38438052 DOI: 10.1016/j.bcp.2024.116082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/01/2024] [Accepted: 02/22/2024] [Indexed: 03/06/2024]
Abstract
Toll-like receptors (TLRs) have become a focus in biomedicine and biomedical research given the roles of this unique family of innate immune proteins in immune activation, infection, and autoimmunity. It is evident that TLR dysregulation, and subsequent alterations in TLR-mediated inflammatory signalling, can contribute to disease pathogenesis, and TLR targeted therapies are in development. This review highlights evidence that cannabinoids are key regulators of TLR signalling. Cannabinoids include component of the plant Cannabis sativa L. (C. sativa), synthetic and endogenous ligands, and overall represent a class of compounds whose therapeutic potential and mechanism of action continues to be elucidated. Cannabinoid-based medicines are in the clinic, and are furthermore under intense investigation for broad clinical development to manage symptoms of a range of disorders. In this review, we present an overview of research evidence that signalling linked to a range of TLRs is targeted by cannabinoids, and such cannabinoid mediated effects represent therapeutic avenues for further investigation. First, we provide an overview of TLRs, adaptors and key signalling events, alongside a summary of evidence that TLRs are linked to disease pathologies. Next, we discuss the cannabinoids system and the development of cannabinoid-based therapeutics. Finally, for the bulk of this review, we systematically outline the evidence that cannabinoids (plant-derived cannabinoids, synthetic cannabinoids, and endogenous cannabinoid ligands) can cross-talk with innate immune signalling governed by TLRs, focusing specifically on each member of the TLR family. Cannabinoids should be considered as key regulators of signalling controlled by TLRs, and such regulation should be a major focus in terms of the anti-inflammatory propensity of the cannabinoid system.
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Affiliation(s)
- Melody Cui Sun
- Discipline of Physiology, School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Almudena Otálora-Alcaraz
- Discipline of Physiology, School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Jack A Prenderville
- Discipline of Physiology, School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; Transpharmation Ireland Limited, Institute of Neuroscience, Trinity College, Dublin 2, Ireland
| | - Eric J Downer
- Discipline of Physiology, School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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Liu R, Li F, Hao S, Hou D, Zeng X, Huang H, Sethi G, Guo J, Duan C. Low-dose Olaparib improves septic cardiac function by reducing ferroptosis via accelerated mitophagy flux. Pharmacol Res 2024; 200:107056. [PMID: 38228256 DOI: 10.1016/j.phrs.2023.107056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/28/2023] [Accepted: 12/31/2023] [Indexed: 01/18/2024]
Abstract
Sepsis is a dysregulated response to infection that can result in life-threatening organ failure, and septic cardiomyopathy is a serious complication involving ferroptosis. Olaparib, a classic targeted drug used in oncology, has demonstrated potential protective effects against sepsis. However, the exact mechanisms underlying its action remain to be elucidated. In our study, we meticulously screened ferroptosis genes associated with sepsis, and conducted comprehensive functional enrichment analyses to delineate the relationship between ferroptosis and mitochondrial damage. Eight sepsis-characterized ferroptosis genes were identified in sepsis patients, including DPP4, LPIN1, PGD, HP, MAPK14, POR, GCLM, and SLC38A1, which were significantly correlated with mitochondrial quality imbalance. Utilizing DrugBank and molecular docking, we demonstrated a robust interaction of Olaparib with these genes. Lipopolysaccharide (LPS)-stimulated HL-1 cells and monocytes were used to establish an in vitro sepsis model. Additionally, an in vivo model was developed using mice subjected to cecal ligation and perforation (CLP). Intriguingly, low-dose Olaparib (5 mg/kg) effectively targeted and mitigated markers associated with ferroptosis, concurrently improving mitochondrial quality. This led to a marked enhancement in cardiac function and a significant increase in survival rates in septic mice (p < 0.05). The mechanism through which Olaparib ameliorates ferroptosis in cardiac and leukocyte cells post-sepsis is attributed to its facilitation of mitophagy, thus favoring mitochondrial integrity. In conclusion, our findings suggest that low-dose Olaparib can improve mitochondrial quality by accelerating mitophagy flux, consequently inhibiting ferroptosis and preserving cardiac function after sepsis.
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Affiliation(s)
- Ruixue Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Fengjuan Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510660, PR China
| | - Shuai Hao
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China; Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, PR China
| | - Dongyao Hou
- Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, PR China
| | - Xue Zeng
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - He Huang
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Gautam Sethi
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China; Department of Pharmacology and NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Jun Guo
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510660, PR China.
| | - Chenyang Duan
- Department of Anesthesiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China.
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Chen L, Zhu Y, Wang Y, Li Z, Wang Z, Miao Y, Du H, Liu D. The water-soluble subfraction from Artemisia argyi alleviates LPS-induced inflammatory responses via multiple pathways and targets in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117364. [PMID: 38380576 DOI: 10.1016/j.jep.2023.117364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 02/22/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE As a traditional Chinese medicine, Artemisia argyi has been used medicinally and eaten for more than 2000 years in China. It is widely reported in treating inflammatory diseases such as eczema, dermatitis, arthritis, allergic asthma and colitis. Although several studies claim that its volatile oil and organic reagent extracts have certain anti-inflammatory effects, the water-soluble fractions and molecular mechanisms have not been studied. AIM OF THE STUDY To evaluate the therapeutic effect of A. argyi water extract (AAWE) on lipopolysaccharide (LPS)-induced inflammatory responses and to identify the most effective water-soluble subfractions. Moreover, the relevant pharmacological and molecular mechanisms by which the active subfraction mitigates inflammation were further investigated. MATERIALS AND METHODS Firstly, RAW 264.7 cells stimulated with LPS were treated with AAWE (50, 100, and 200 μg/mL) or the water-soluble subfractions separated by D101 macroporous resin (AAWE1-AAWE4, 100 μg/mL), and NO production and mRNA levels of inflammatory genes were evaluated to determine the most effective water-soluble subfractions. Secondly, the chemical components of the active subfraction (AAWE4) were analyzed by UPLC-QTOF-MS. Thirdly, transcriptome and network pharmacology analysis, RT-qPCR and Western blotting assays were conducted to explore the underlying anti-inflammatory mechanism and active compounds of AAWE4. Subsequently, the binding ability of the potential active components in AAWE4 to the core targets was further determined by molecular docking. Eventually, the in vivo anti-inflammatory activity of AAWE4 (1.17, 2.34 and 4.68 g/kg, administered per day for 7 d) was evaluated in mice with LPS-induced systemic inflammation. RESULTS In this study, AAWE showed excellent anti-inflammatory effects, and its water-soluble subfraction AAWE4 exhibited the strongest inhibitory effect on NO concentration and inflammatory gene mRNA expression after LPS stimulation, indicating that it was the most effective subfraction. Thereafter, four main compounds in AAWE4 were confirmed or tentatively identified by UPLC-QTOF-MS, including three flavonoid glycosides and one phenolic acid. Furthermore, the transcriptome and network pharmacology analysis showed that AAWE4 inhibited inflammation via multiple pathways and multiple targets. Based on the RT-qPCR and Western blotting results, AAWE4 downregulated not only the p38, PI3K, CCL5, MMP9, AP-1, and BCL3 mRNA expression levels activated by LPS but also their upstream and downstream protein expression levels and protein phosphorylation (p-AKT/AKT, p-p38/p38, p-ERK/ERK, p-JNK/JNK). Moreover, four identified compounds (isochlorogenic acid A, vicenin-2, schaftoside and isoschaftoside) could significantly inhibit NO content and the overexpression of inflammatory factors TNF-α, IL-1β, iNOS and COX-2 mRNA induced by LPS, and the molecular docking confirmed the high binding activity of four active compounds with selected core targets (p38, AKT1, MMP9, and CCL5). In addition, the mRNA expression and immunohistochemical analysis showed that AAWE44 could inhibit lung inflammation via multiple pathways and multiple targets in vivo. CONCLUSIONS The findings of this study suggest that the water-soluble subfraction AAWE4 from A. argyi ameliorated the inflammation caused by LPS through multiple pathways and multiple targets in vitro and in vivo, providing scientific support for the medicinal use of A. argyi. Importantly, it shows that the A. argyi subfraction AAWE4 can be developed as an anti-inflammatory drug.
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Affiliation(s)
- Le Chen
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Yunyun Zhu
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yuqiao Wang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; Hubei Shizhen Laboratory, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Zhouyuan Li
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; Hubei Shizhen Laboratory, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Ziling Wang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yuhuan Miao
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; Hubei Shizhen Laboratory, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Hongzhi Du
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China; Hubei Shizhen Laboratory, Hubei University of Chinese Medicine, Wuhan, 430065, China.
| | - Dahui Liu
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China; Hubei Shizhen Laboratory, Hubei University of Chinese Medicine, Wuhan, 430065, China.
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9
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Wang C, Cui X, Dong Z, Liu Y, Xia P, Wang X, Zhang Z, Yu S, Wu S, Liu H, Zong S, Lu Z. Attenuated memory impairment and neuroinflammation in Alzheimer's disease by aucubin via the inhibition of ERK-FOS axis. Int Immunopharmacol 2024; 126:111312. [PMID: 38043266 DOI: 10.1016/j.intimp.2023.111312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/11/2023] [Accepted: 11/26/2023] [Indexed: 12/05/2023]
Abstract
Alzheimer's disease (AD) is a degenerative illness accompanied by cognitive and memory loss. In addition to the widely accepted, convincing amyloid cascade hypothesis, the activation of glial cells and neuroinflammation, especially the microglia-mediated neuroinflammation, has an essential role in the development and progression of AD. Therefore, the anti-inflammatory treatment is becoming a promising therapeutic strategy. Aucubin (Au) is a natural product derived from many plants with anti-inflammatory and antioxidant activities. Up to now, no research has been conducted to investigate the anti-inflammatory effects of Au and its neuroprotective quality on AD and the potential molecular mechanisms of its medical roles. In our study, the results of network pharmacology revealed the potential therapeutic effect of Au on AD. The results of studies in vivo showed that Au improved the behaviors, counteracted cognitive and memory deficits, and ameliorated AD-like pathological features of the mouse brain, e.g., the deposition of Aβ plaques, neuronal damage, and inflammatory responses induced by glial cell overactivation, in APP/PS1 mice. The transcriptome sequencing further confirmed that the pathological symptoms of AD could be reversed by inhibiting the ERK/FOS axis to alleviate the inflammatory response. The in vitro experiments revealed that Au suppressed the BV2 cell activation, inhibited the phosphorylation of ERK1/2 and the expression of c-FOS, and reduced the LPS-induced inflammatory mediator production by BV2 cells and primary astrocytes. Our study suggested that Au exerted its neuroprotective effects by inhibiting the inflammatory responses, which could be a promising treatment of AD.
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Affiliation(s)
- Cuicui Wang
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaolin Cui
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Zhenfang Dong
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yingchao Liu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Pengcheng Xia
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xueying Wang
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhi Zhang
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Shuyi Yu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shuang Wu
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Huan Liu
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Shuai Zong
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Zhiming Lu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
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10
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Yu YW, Chen X, Yan JY, Hu J, Huang KY, Ji KT, Cai HL. Phlorizin, a novel caloric restriction mimetic, stimulates hypoxia and protects cardiomyocytes through activating autophagy via modulating the Hif-1α/Bnip3 axis in sepsis-induced myocardial dysfunction. Int Immunopharmacol 2024; 126:111241. [PMID: 37984253 DOI: 10.1016/j.intimp.2023.111241] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/30/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Sepsis is a systemic inflammatory syndrome that can lead to multiple organ dysfunction and life-threatening complications. Sepsis-induced myocardial dysfunction (SIMD) has been confirmed to be present in half of patients with septic shock, increasing their mortality rate to 70-90%. The pathogenesis of SIMD is complex, and no specific clinical treatment has yet been developed. Caloric restriction mimetics (CRM), compounds that simulate the biochemical and functional properties of CR, can improve cardiovascular injury by activating autophagy. This study investigated the effect of a new type of CRM which can induce hypoxia, the SGLT nonspecific inhibitor phlorizin on SIMD. MATERIALS AND METHODS In vivo, phlorizin was administered at 1 mg/kg/day intragastrically for 28 days. In vitro, AC16 was treated with 120 μM phlorizin for 48 h. Echocardiography was used to assess cardiac function. Myocardial injury markers were detected in serum and cell supernatant. Western blotting was employed to detect changed proteins associated with apoptosis and autophagy. Immunofluorescence, immunohistochemistry, co-immunoprecipitation, molecular docking, and other methods were also used to illustrate cellular changes. RESULTS In vivo, phlorizin significantly improved the survival rate and cardiac function after sepsis injury, reduced markers of myocardial injury, inhibited myocardial apoptosis and oxidative stress, and promoted autophagy. In vitro, phlorizin alleviated the apoptosis of AC16, as well as inhibited oxidative stress and apoptotic enzyme activity. Phlorizin acts on autophagy at multiple sites through low energy (activation of AMPK) and hypoxia (release of Beclin-1 by Hif-1α/Bnip3 axis), promoting the formation and degradation of autophagosomes. CONCLUSION We indicated for the first time that phlorizin could inhibit glucose uptake via GLUT-1 and conforms to the metabolic characteristics of CRM, it can induce the hypoxic transcriptional paradigm. In addition, it inhibits apoptosis and improves SIMD by promoting autophagy generation and unobstructing autophagy flux. Moreover, it affects autophagy by releasing Beclin-1 through the Hif-1α/Bnip3 axis.
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Affiliation(s)
- Yong-Wei Yu
- Intensive Care Unit, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Department of Cardiology, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 312500, China
| | - Xia Chen
- Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Jue-Yue Yan
- Intensive Care Unit, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Juan Hu
- Intensive Care Unit, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Kai-Yu Huang
- Department of Cardiology, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 312500, China
| | - Kang-Ting Ji
- Department of Cardiology, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 312500, China.
| | - Hong-Liu Cai
- Intensive Care Unit, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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11
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Zhang B, Yang J, Li X, Zhu H, Sun J, Jiang L, Xue C, Zhang L, Xu C, Xing S, Jin Z, Liu J, Yu S, Duan W. Tetrahydrocurcumin ameliorates postinfarction cardiac dysfunction and remodeling by inhibiting oxidative stress and preserving mitochondrial function via SIRT3 signaling pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 121:155127. [PMID: 37812853 DOI: 10.1016/j.phymed.2023.155127] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/14/2023] [Accepted: 09/28/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Myocardial infarction (MI) often leads to sudden cardiac death. Persistent myocardial ischemia increases oxidative stress and impairs mitochondrial function, contributing significantly to postinfarction cardiac dysfunction and remodeling, and the subsequent progression to heart failure (HF). Tetrahydrocurcumin (THC), isolated from the rhizome of turmeric, has antioxidant properties and has been shown to protect against cardiovascular diseases. However, its effects on HF after MI are poorly understood. PURPOSE The objective was the investigation of the pharmacological effects of THC and its associated mechanisms in the pathogenesis of HF after MI. METHODS A total of 120 mice (C57BL/6, male) were used for the in vivo experiments. An MI mouse model was created by permanent ligation of the left anterior descending coronary artery. The mice received oral dose of THC at 120 mg/kg/d and the effects on MI-induced myocardial injury were evaluated by assessment of cardiac function, histopathology, myocardial oxidative levels, and mitochondrial function. Molecular mechanisms were investigated by intraperitoneal injection of 50 mg/kg of the SIRT3 selective inhibitor 3-TYP. Meanwhile, mouse neonatal cardiomyocytes were isolated and cultured in a hypoxic incubator to verify the effects of THC in vitro. Lastly, SIRT3 and Nrf2 were silenced using siRNAs to further explore the regulatory mechanism of key molecules in this process. RESULTS The mouse hearts showed significant impairment in systolic function after MI, together with enlarged infarct size, increased myocardial fibrosis, cardiac hypertrophy, and apoptosis of cardiomyocytes. A significant reversal of these changes was seen after treatment with THC. Moreover, THC markedly reduced reactive oxygen species generation and protected mitochondrial function, thus mitigating oxidative stress in the post-MI myocardium. Mechanistically, THC counteracted reduced Nrf2 nuclear accumulation and SIRT3 signaling in the MI mice while inhibition of Nrf2 or SIRT3 reversed the effects of THC. Cell experiments showed that Nrf2 silencing markedly reduced SIRT3 levels and deacetylation activity while inhibition of SIRT3 signaling had little impact on Nrf2 expression. CONCLUSION This is the first demonstration that THC protects against the effects of MI. THC reduced both oxidative stress and mitochondrial damage by regulating Nrf2-SIRT3 signaling. The results suggest the potential of THC in treating myocardial ischemic diseases.
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Affiliation(s)
- Bin Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China; Department of Surgery, The 954th Hospital of the Chinese People's Liberation Army, Shannan, Tibet 856100, China
| | - Jiachang Yang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Xiayun Li
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Hanzhao Zhu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Jingwei Sun
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Liqing Jiang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Chao Xue
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Liyun Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Chennian Xu
- Department of Cardiothoracic Surgery, The 79th Group Military Hospital of the People's Liberation Army, Liaoyang, Liaoning 111000, China
| | - Shishi Xing
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Zhenxiao Jin
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Jincheng Liu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China
| | - Shiqiang Yu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China.
| | - Weixun Duan
- Department of Cardiovascular Surgery, The First Affiliated Hospital, The Air Force Medical University, 127 Changle West Road, Xi'an, Shaanxi 710032, China.
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12
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Qiu Q, Yu X, Chen Q, He X. Sema3A inactivates the ERK/JNK signalling pathways to alleviate inflammation and oxidative stress in lipopolysaccharide-stimulated rat endothelial cells and lung tissues. Autoimmunity 2023; 56:2200908. [PMID: 37128697 DOI: 10.1080/08916934.2023.2200908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Semaphorin 3A (Sema3A) is a secretory member of the semaphorin family of immune response regulators. This research focuses on its effects on inflammation and oxidative stress in acute respiratory distress syndrome (ARDS). By analysing the GEO dataset GSE57011, we obtained Sema3A as the most downregulated gene in ARDS samples. Lipopolysaccharide (LPS) was used to stimulate rat pulmonary microvascular endothelial cells (PMVECs) and rats to induce ARDS-like symptoms in vitro and in vivo, respectively. LPS induced severe damage in rat lung tissues, in which reduced immunohistochemical staining of Sema3A was detected. Sema3A overexpression reduced apoptosis and angiogenesis of LPS-induced PMVECs and alleviated lung injury and pulmonary edoema of rats. Moreover, ELISA results showed that Sema3A overexpression downregulated the levels of inflammatory cytokines and oxidative stress markers both in PMVECs and the rat lung. Activation of ERK/JNK signalling aggravated LPS-induced damage on PMVECs; however, the aggravation was partly blocked by Sema3A, which suppressed phosphorylation of ERK/JNK. Overall, this study demonstrates that Sema3A inactivates the ERK/JNK signalling to ameliorate inflammation and oxidative stress in LPS-induced ARDS models. Sema3A might therefore represent a candidate option for ARDS treatment.
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Affiliation(s)
- Qianwen Qiu
- Department of Medical Ultrasonics, Lishui People's Hospital, Lishui, Zhejiang, P.R. China
| | - Xiufeng Yu
- Department of Emergency Medicine, Lishui People's Hospital, Lishui, Zhejiang, P.R. China
| | - Qingli Chen
- Department of Emergency Medicine, Lishui People's Hospital, Lishui, Zhejiang, P.R. China
| | - Xuwei He
- Department of Emergency Medicine, Lishui People's Hospital, Lishui, Zhejiang, P.R. China
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13
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Zhang Y, Zhang D, Meng T, Tian P, Chen J, Liu A, Zheng Y, Su G. SGK1 is involved in doxorubicin-induced chronic cardiotoxicity and dysfunction through activation of the NFκB pathway. Int Immunopharmacol 2023; 125:111151. [PMID: 37948859 DOI: 10.1016/j.intimp.2023.111151] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 11/12/2023]
Abstract
Breast cancer is the predominant cancer among women worldwide, and chemotherapeutic agents, such as doxorubicin (DOX), have the potential to significantly prolong survival, albeit at the cost of inducing severe cardiovascular toxicity. Inflammation has emerged as a crucial biological process contributing to the remodeling of cardiovascular toxicity. The role of serum glucocorticoid kinase 1 (SGK1) in various inflammatory diseases has been extensively investigated. Here, we studied the molecular mechanisms underlying the function of SGK1 in DOX-induced cardiotoxicity in HL-1 cardiomyocyte cell lines and in a tumor-bearing mouse model. SGK1 was upregulated in the DOX-induced cardiotoxicity model, accompanied by increased levels of inflammatory factors. Furthermore, inhibition of SGK1 suppresses the phosphorylation of nuclear factor-kappa B (NFκB) in cardiomyocytes, which inhibits the production of inflammatory factors and apoptosis of cardiomyocytes, and has cardioprotective effects. Simultaneously, small interfering RNA targeting SGK1 inhibited the proliferation of breast cancer cells. Conversely, overexpression of SGK1 increases the phosphorylation of NFκB and aggravates myocardial injury. In conclusion, our study demonstrates that SGK1 promotes DOX-induced cardiac inflammation and apoptosis by promoting NFκB activity. Our results indicate that inhibiting SGK1 might be an effective treatment strategy that can provide both tumor-killing and cardioprotective functions. Further in vivo research is needed to fully elucidate the effects and mechanisms of combination therapy with SGK1 inhibitors and DOX in breast cancer treatment.
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Affiliation(s)
- Yu Zhang
- Jinan Central Hospital, Shandong University, Jinan, Shandong, People's Republic of China
| | - Dan Zhang
- Jinan Central Hospital, Jinan, Shandong, People's Republic of China
| | - Tingting Meng
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
| | - Peng Tian
- Jinan Central Hospital, Shandong University, Jinan, Shandong, People's Republic of China
| | - Jianlin Chen
- Research Center of Translational Medicine, Jinan Central Hospital, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Anbang Liu
- Jinan Central Hospital, Jinan, Shandong, People's Republic of China
| | - Yan Zheng
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China.
| | - Guohai Su
- Jinan Central Hospital, Shandong University, Jinan, Shandong, People's Republic of China; Jinan Central Hospital, Jinan, Shandong, People's Republic of China; Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China.
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14
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Yang Y, Yang J, Ma T, Yang X, Yuan Y, Guo Y. The role and mechanism of TGF-β1 in the antidepressant-like effects of tetrahydrocurcumin. Eur J Pharmacol 2023; 959:176075. [PMID: 37802279 DOI: 10.1016/j.ejphar.2023.176075] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/08/2023]
Abstract
Astrocytes and the activation of inflammatory factors are associated with depression. Tetrahydrocurcumin (THC), the principal metabolite of natural curcumin, is renowned for its anti-inflammatory properties. In this research, we explored the impact of THC on the expression of inflammatory factors, neurotrophins, and transforming growth factor β1 (TGF-β1) in the prefrontal cortex after chronic restraint stress (CRS) in mice and in lipopolysaccharide (LPS)-induced TNC1 astrocytes. Our findings indicated that THC mitigated the anxiety and depression-like behaviours observed in CRS mice. It also influenced the expression of TGF-β1, p-SMAD3/SMAD3, sirtuin 1 (SIRT1), brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF), inducible nitric oxide synthase (iNOS), and tumour necrosis factor α (TNF-α). Specifically, THC augmented the expressions of TGF-β1, p-SMAD3/SMAD3, SIRT1, BDNF, and GDNF, whilst diminishing the expressions of iNOS and TNF-α in LPS-induced astrocytes. However, when pre-treated with SB431542, a TGF-β1 receptor inhibitor, it nullified the aforementioned effects of THC on astrocytes. Our results propose that THC delivers its anti-depressive effects through the activation of TGF-β1, enhancement of p-SMAD3/SMAD3 and SIRT1 expression, upregulation of BDNF and GDNF, and downregulation of iNOS and TNF-α. This research furnishes new perspectives on the anti-inflammatory mechanism that underpins the antidepressant-like impact of THC.
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Affiliation(s)
- Yan Yang
- Kunming Medical University, Kunming, China
| | | | | | - Xueke Yang
- Kunming Medical University, Kunming, China
| | - Yun Yuan
- Kunming Medical University, Kunming, China.
| | - Ying Guo
- Kunming Medical University, Kunming, China.
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15
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Xia M, Wu Z, Wang J, Buist-Homan M, Moshage H. The Coumarin-Derivative Esculetin Protects against Lipotoxicity in Primary Rat Hepatocytes via Attenuating JNK-Mediated Oxidative Stress and Attenuates Free Fatty Acid-Induced Lipid Accumulation. Antioxidants (Basel) 2023; 12:1922. [PMID: 38001774 PMCID: PMC10669015 DOI: 10.3390/antiox12111922] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Coumarin derivates have been proposed as a potential treatment for metabolic-dysfunction-associated fatty liver disease (MAFLD). However, the mechanisms underlying their beneficial effects remain unclear. In the present study, we explored the potential of the coumarin derivate esculetin in MAFLD, focusing on hepatocyte lipotoxicity and lipid accumulation. Primary cultures of rat hepatocytes were exposed to palmitic acid (PA) and palmitic acid plus oleic acid (OA/PA) as models of lipotoxicity and lipid accumulation, respectively. Esculetin significantly reduced oxidative stress in PA-treated hepatocytes, as shown by decreased total reactive oxygen species (ROS) and mitochondrial superoxide production and elevated expression of antioxidant genes, including Nrf2 and Gpx1. In addition, esculetin protects against PA-induced necrosis. Esculetin also improved lipid metabolism in primary hepatocytes exposed to nonlipotoxic OA/PA by decreasing the expression of the lipogenesis-related gene Srebp1c and increasing the expression of the fatty acid β-oxidation-related gene Ppar-α. Moreover, esculetin attenuated lipid accumulation in OA/PA-treated hepatocytes. The protective effects of esculetin against lipotoxicity and lipid accumulation were shown to be dependent on the inhibition of JNK and the activation of AMPK, respectively. We conclude that esculetin is a promising compound to target lipotoxicity and lipid accumulation in the treatment of MAFLD.
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Affiliation(s)
- Mengmeng Xia
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (M.X.); (Z.W.); (J.W.); (M.B.-H.)
| | - Zongmei Wu
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (M.X.); (Z.W.); (J.W.); (M.B.-H.)
| | - Junyu Wang
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (M.X.); (Z.W.); (J.W.); (M.B.-H.)
| | - Manon Buist-Homan
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (M.X.); (Z.W.); (J.W.); (M.B.-H.)
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
| | - Han Moshage
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (M.X.); (Z.W.); (J.W.); (M.B.-H.)
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
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16
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Cui S, Zhang X, Li Y, Hu S, Wu B, Fang Z, Gao J, Li M, Wu H, Tao B, Xia H, Xu L. UGCG modulates heart hypertrophy through B4GalT5-mediated mitochondrial oxidative stress and the ERK signaling pathway. Cell Mol Biol Lett 2023; 28:71. [PMID: 37658291 PMCID: PMC10472674 DOI: 10.1186/s11658-023-00484-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/17/2023] [Indexed: 09/03/2023] Open
Abstract
Mechanical pressure overload and other stimuli often contribute to heart hypertrophy, a significant factor in the induction of heart failure. The UDP-glucose ceramide glycosyltransferase (UGCG) enzyme plays a crucial role in the metabolism of sphingolipids through the production of glucosylceramide. However, its role in heart hypertrophy remains unknown. In this study, UGCG was induced in response to pressure overload in vivo and phenylephrine stimulation in vitro. Additionally, UGCG downregulation ameliorated cardiomyocyte hypertrophy, improved cardiomyocyte mitochondrial oxidative stress, and reduced the ERK signaling pathway. Conversely, UGCG overexpression in cardiomyocytes promoted heart hypertrophy development, aggravated mitochondrial oxidative stress, and stimulated ERK signaling. Furthermore, the interaction between beta-1,4-galactosyltransferase 5 (B4GalT5), which catalyses the synthesis of lactosylceramide, and UGCG was identified, which also functions as a synergistic molecule of UGCG. Notably, limiting the expression of B4GalT5 impaired the capacity of UGCG to promote myocardial hypertrophy, suggesting that B4GalT5 acts as an intermediary for UGCG. Overall, this study highlights the potential of UGCG as a modulator of heart hypertrophy, rendering it a potential target for combating heart hypertrophy.
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Affiliation(s)
- Shengyu Cui
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Xutao Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Yuhua Li
- Intensive Care Unit, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Shan Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Bing Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Zhao Fang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Jixian Gao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Ming Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Haoliang Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Bo Tao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Hao Xia
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
- Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China.
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, China.
| | - Lin Xu
- Department of Geriatrics, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China.
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17
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Aisa-Álvarez A, Pérez-Torres I, Guarner-Lans V, Manzano-Pech L, Cruz-Soto R, Márquez-Velasco R, Casarez-Alvarado S, Franco-Granillo J, Núñez-Martínez ME, Soto ME. Randomized Clinical Trial of Antioxidant Therapy Patients with Septic Shock and Organ Dysfunction in the ICU: SOFA Score Reduction by Improvement of the Enzymatic and Non-Enzymatic Antioxidant System. Cells 2023; 12:cells12091330. [PMID: 37174730 PMCID: PMC10177152 DOI: 10.3390/cells12091330] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/28/2023] [Accepted: 04/30/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND AND AIM Here, we assess the effect of adjuvant antioxidant therapies in septic shock patients with organ dysfunction and their effect on the enzymatic and non-enzymatic antioxidant systems. METHODS Randomized clinical trial run between 2018 and 2022. One hundred and thirty-one patients with septic shock were included in five groups with 25, 27, 24, 26 and 29 patients each. Group 1 received vitamin C (Vit C), Group 2 vitamin E (Vit E), Group 3 n-acetylcysteine (NAC), Group 4 melatonin (MT) and group 5 no treatment. All antioxidants were administered orally or through a nasogastric tube for 5 days as an adjuvant to standard therapy. RESULTS All patients had multiple organ failure (MOF) and low Vit C levels. Vit C therapy decreased CRP, PCT and NO3-/NO2- but increased Vit C levels. The SOFA score decreased with MT in 75%, Vit C 63% and NAC 50% vs. controls 33% (p = 0.0001, p = 0.03 and p = 0.001 respectively). MT diminished lipid peroxidation (LPO) (p = 0.01) and improved total antioxidant capacity (TAC) (p = 0.04). Vit E increased thiol levels (p = 0.02) and tended to decrease LPO (p = 0.06). Selenium levels were decreased in the control group (p = 0.04). CONCLUSIONS Antioxidants used as an adjuvant therapy in the standard treatment of septic shock decrease MOF and oxidative stress markers. They increase the TAC and thiols, and maintain selenium levels.
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Affiliation(s)
- Alfredo Aisa-Álvarez
- Critical Care Department, American British Cowdray (ABC) Medical Center, I.A.P. ABC Sur 136 No. 116 Col. Las Américas, México City 01120, Mexico
- UNAM Master's and Doctoral Program in Medical, Dental and Health Sciences UNAM, México. Av. Universidad 3000, Coyoacán, México City 04510, Mexico
| | - Israel Pérez-Torres
- Cardiovascular Biomedicine Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Verónica Guarner-Lans
- Physiology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Linaloe Manzano-Pech
- Cardiovascular Biomedicine Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Randall Cruz-Soto
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Ricardo Márquez-Velasco
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Sergio Casarez-Alvarado
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Juvenal Franco-Granillo
- Critical Care Department, American British Cowdray (ABC) Medical Center, I.A.P. ABC Sur 136 No. 116 Col. Las Américas, México City 01120, Mexico
| | | | - María Elena Soto
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
- Department of the Cardiovascular, Division of the American British Cowdray Medical Center, Sur 136 No. 116 Col. Las Américas, México City 01120, Mexico
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18
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Jiao Y, Zhang Q, Zhang J, Zha Y, Wang J, Li Y, Zhang S. Platelet-rich plasma ameliorates lipopolysaccharide-induced cardiac injury by inflammation and ferroptosis regulation. Front Pharmacol 2022; 13:1026641. [PMID: 36330090 PMCID: PMC9623117 DOI: 10.3389/fphar.2022.1026641] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/04/2022] [Indexed: 11/25/2022] Open
Abstract
Sepsis-induced myocardial dysfunction (SIMD) is a fatal disease with no specific treatment worldwide to this day. As a biological product, platelet-rich plasma (PRP) has attracted much attention due to its diverse and potential biological effects. However, its role in lipopolysaccharide (LPS)-induced cardiac injury has not been fully investigated. This study aimed to explore the mechanism of PRP in SIMD. PRP (30 µL) was injected in situ into the heart, and LPS (10 mg/kg) was injected intraperitoneally into mice. Neonatal rat cardiomyocytes were treated with LPS (1 μg/ml) for 24 h. The results showed that, compared with the LPS group, PRP significantly decreased the levels of Lactate dehydrogenase (LDH) and Creatine Kinase MB (CK-MB), and improved cardiac function. In addition, PRP markedly decreased the Malonic dialdehyde (MDA) content, and increased the Superoxide dismutase (SOD) activity and Glutathione (GSH) level, demonstrating that PRP alleviated LPS-induced oxidative stress. The Western blot and qPCR results showed that LPS-induced ferroptosis and inflammation effects in vivo and in vitro were ameliorated after PRP treatment. Moreover, PRP can alleviate erastin-induced ferroptosis and improve cell viability. Mechanistically, p-AKT and p-mTOR expressions were down-regulated after treatment with LPS, while PRP pretreatment could reverse this effect. In summary, our study demonstrated that PRP could play a unique role in reducing LPS-induced cardiac injury through regulation of AKT/mTOR signaling pathways. These findings provide a new therapeutic direction for treating SIMD.
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Affiliation(s)
- Yuheng Jiao
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingyu Zhang
- Hospital of Stomatology, Jilin University, Changchun, China
| | - Jiayan Zhang
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yafang Zha
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Wang
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanyan Li
- Department of Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yanyan Li, ; Song Zhang,
| | - Song Zhang
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yanyan Li, ; Song Zhang,
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19
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Jiang L, Zhang L, Yang J, Shi H, Zhu H, Zhai M, Lu L, Wang X, Li XY, Yu S, Liu J, Duan W. 1-Deoxynojirimycin attenuates septic cardiomyopathy by regulating oxidative stress, apoptosis, and inflammation via the JAK2/STAT6 signaling pathway. Biomed Pharmacother 2022; 155:113648. [PMID: 36108388 DOI: 10.1016/j.biopha.2022.113648] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiac dysfunction caused by sepsis is the predominant reason for death in patients with sepsis. However, the effective drugs for its prevention and the molecular mechanisms remain elusive. 1-Deoxynojirimycin (DNJ), a natural iminopyranose, exhibits various biological properties, such as hypoglycemic, antitumor, antiviral, and anti-inflammatory activities. However, whether DNJ can mediate biological activity resistance in sepsis-induced myocardial injury and the underlying mechanisms are unclear. Janus kinase and signal transducer and activator of transcription (JAK/STAT) signaling is an important pathway for the signal transduction of several key cytokines in the pathogenesis of sepsis, which can transcribe and modulate the host immune response. This study was conducted to confirm whether DNJ mediates oxidative stress, apoptosis, and inflammation in cardiomyocytes, thereby alleviating myocardial injury in sepsis via the JAK2/STAT6 signaling pathway. Septic cardiomyopathy was induced in mice using lipopolysaccharide (LPS), and they were then treated with DNJ. The results showed that DNJ markedly improved sepsis-induced cardiac dysfunction, attenuated reactive oxygen species generation, reduced cardiomyocyte apoptosis, and mitigated inflammation. Mechanistically, increased JAK2/STAT6 phosphorylation was observed in the mouse sepsis models, which decreased significantly after DNJ oral treatment. To further confirm whether DNJ mediates the JAK2/STAT6 pathway, the selective inhibitor fedratinib was used to block the JAK2 signaling pathway in vitro, which enhanced the protective effects of DNJ against the sepsis-induced cardiac damage. Collectively, these findings suggest that DNJ attenuates sepsis-induced myocardial injury by decreasing myocardial oxidative damage, apoptosis, and inflammation via the regulation of the JAK2/STAT6 signaling pathway.
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Affiliation(s)
- LiQing Jiang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - LiYun Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - JiaChang Yang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - Heng Shi
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - HanZhao Zhu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - MengEn Zhai
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - LinHe Lu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - XiaoWu Wang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - Xia Yun Li
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - ShiQiang Yu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - JinCheng Liu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
| | - WeiXun Duan
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Air Force Medical University, Xi'an, 710032 Shaanxi, China.
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