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Zhou W, Wang N, Dong S, Huan Z, Sui L, Ge X. PRG4 mitigates hemorrhagic shock-induced cardiac injury by inhibiting mitochondrial dysregulation, oxidative stress and NLRP3-mediated pyroptosis. Int Immunopharmacol 2024; 137:112507. [PMID: 38897120 DOI: 10.1016/j.intimp.2024.112507] [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: 01/20/2024] [Revised: 06/10/2024] [Accepted: 06/14/2024] [Indexed: 06/21/2024]
Abstract
Hemorrhagic shock (HS) is one of the main causes of morbidity and death in patients with trauma or major surgery. Cardiac dysfunction is a well-known complication of HS. PRG4, also known as lubricin, is a mucin-like glycoprotein that plays anti-inflammatory and anti-apoptotic roles in a variety of diseases. In this study, we aimed to explore the cardioprotective efficacy of PRG4 in HS-induced cardiac injury. Employing the HS model and RNA-seq, we found that PRG4 was increased in the myocardial tissue of rats after HS. In vivo studies suggested that HS led to abnormal hemodynamic parameters and increased cTnI levels, and PRG4 overexpression effectively reversed these changes. PRG4 also suppressed HS-induced mitochondrial disorders, as reflected by increased mitochondrial membrane potential (MMP), ATP and mitochondria cytochrome c, COXIV and TOM20, as well as decreased BNIP3L and cytoplasmic cytochrome c. Furthermore, HS led to enhanced oxidative stress, as evidenced by upregulated ROS and MDA contents, and downregulated SOD and CAT activities, and these alterations were negated by PRG4 overexpression. Notably, PRG4 repressed the NLRP3-mediated pyroptosis pathway, as illustrated by decreased NLRP3 levels, caspase-1 activity and GSDMD-NT levels. In summary, these observations indicate that PRG4 overexpression protects against HS-induced cardiac dysfunction by inhibiting mitochondrial dysregulation, oxidative stress and NLRP3-mediated pyroptosis.
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Affiliation(s)
- Wuming Zhou
- Department of Critical Care Medicine, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Nan Wang
- Department of Critical Care Medicine, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Sheng Dong
- Department of Emergency, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Zhirong Huan
- Department of Critical Care Medicine, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Lijun Sui
- Department of Cardiology, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China.
| | - Xin Ge
- Department of Critical Care Medicine, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China; Department of Emergency, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China; Orthopedic Institution of Wuxi City, Wuxi, Jiangsu 214000, People's Republic of China.
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Yang Y, Han C, Sun Y, Zhao X, Chen Z, Zhao L, Li Y, Zhang W. Effects of Acute High-Altitude Exposure on Morphology and Function of Retinal Ganglion Cell in Mice. Invest Ophthalmol Vis Sci 2024; 65:19. [PMID: 39133471 PMCID: PMC11323993 DOI: 10.1167/iovs.65.10.19] [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: 03/31/2024] [Accepted: 07/19/2024] [Indexed: 08/13/2024] Open
Abstract
Purpose High altitude retinopathy (HAR) is a retinal functional disorder caused by inadequate adaptation after exposure to high altitude. However, the cellular and molecular mechanisms underlying retinal dysfunction remain elusive. Retinal ganglion cell (RGC) injury is the most important pathological basis for most retinal and optic nerve diseases. Studies focusing on RGC injury after high-altitude exposure (HAE) are scanty. Therefore, the present study sought to explore both functional and morphological alterations of RGCs after HAE. Methods A mouse model of acute hypobaric hypoxia was established by mimicking the conditions of a high altitude of 5000 m. After HAE for 2, 4, 6, 10, 24, and 72 hours, the functional and morphological alterations of RGCs were assessed using retinal hematoxylin and eosin (H&E) sections, retinal whole mounts, transmission electron microscopy (TEM), and the photopic negative response (PhNR) of the electroretinogram. Results Compared with the control group, the thickness of the ganglion cell layer and retinal nerve fiber layer increased significantly, RGC loss remained significant, and the amplitudes of a-wave, b-wave, and PhNR were significantly reduced after HAE. In addition, RGCs and their axons exhibited an abnormal ultrastructure after HAE, including nuclear membrane abnormalities, uneven distribution of chromatin in the nucleus, decreased cytoplasmic electron density, widening and vacuolization of the gap between axons, loosening and disorder of myelin sheath structure, widening of the gap between myelin sheath and axon membrane, decreased axoplasmic density, unclear microtubule and nerve fiber structure, and abnormal mitochondrial structure (mostly swollen, with widened membrane gaps and reduced cristae and vacuolization). Conclusions The study findings confirm that the morphology and function of RGCs are damaged after HAE. These findings lay the foundation for further study of the specific molecular mechanisms of HAR and promote the effective prevention.
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Affiliation(s)
- Yi Yang
- Department of Ophthalmology, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
| | - Cong Han
- Department of Ophthalmology, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
| | - Yi Sun
- Department of Ophthalmology, the 940th Hospital of Joint Service Support Forces of the Chinese People's Liberation Army, Lanzhou, Gansu, People's Republic of China
| | - Xin Zhao
- Department of Ophthalmology, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
| | - Zhaoqian Chen
- Department of Ophthalmology, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
| | - Liangtao Zhao
- Cuiying Biomedical Research Center, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
| | - Yuting Li
- Department of Pathology, Basic Medical School, Ningxia Medical University, Yinchuan, China
| | - Wenfang Zhang
- Department of Ophthalmology, the Second Hospital of Lanzhou University, Lanzhou, Gansu, People's Republic of China
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Wu Z, Wang Y, Gao R, Chen J, Chen Y, Li M, Gao Y. Potential therapeutic effects of traditional Chinese medicine in acute mountain sickness: pathogenesis, mechanisms and future directions. Front Pharmacol 2024; 15:1393209. [PMID: 38895636 PMCID: PMC11183292 DOI: 10.3389/fphar.2024.1393209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 05/06/2024] [Indexed: 06/21/2024] Open
Abstract
Background and objectives Acute mountain sickness (AMS) is a pathology with different symptoms in which the organism is not adapted to the environment that occurs under the special environment of high altitude. Its main mechanism is the organism's tissue damage caused by acute hypobaric hypoxia. Traditional Chinese medicine (TCM) theory focuses on the holistic concept. TCM has made remarkable achievements in the treatment of many mountain sicknesses. This review outlines the pathogenesis of AMS in modern and traditional medicine, the progress of animal models of AMS, and summarizes the therapeutic effects of TCM on AMS. Methods Using the keywords "traditional Chinese medicine," "herbal medicine," "acute mountain sickness," "high-altitude pulmonary edema," "high-altitude cerebral edema," "acute hypobaric hypoxia," and "high-altitude," all relevant TCM literature published up to November 2023 were collected from Scopus, Web of Science, PubMed, and China National Knowledge Infrastructure databases, and the key information was analyzed. Results We systematically summarised the effects of acute hypobaric hypoxia on the tissues of the organism, the study of the methodology for the establishment of an animal model of AMS, and retrieved 18 proprietary Chinese medicines for the clinical treatment of AMS. The therapeutic principle of medicines is mainly invigorating qi, activating blood and removing stasis. The components of botanical drugs mainly include salidroside, ginsenoside Rg1, and tetrahydrocurcumin. The mechanism of action of TCM in the treatment of AMS is mainly through the regulation of HIF-1α/NF-κB signaling pathway, inhibition of inflammatory response and oxidative stress, and enhancement of energy metabolism. Conclusion The main pathogenesis of AMS is unclear. Still, TCM formulas and components have been used to treat AMS through multifaceted interventions, such as compound danshen drip pills, Huangqi Baihe granules, salidroside, and ginsenoside Rg1. These components generally exert anti-AMS pharmacological effects by inhibiting the expression of VEGF, concentration of MDA and pro-inflammatory factors, down-regulating NF-κB/NLRP3 pathway, and promoting SOD and Na + -K + -ATPase activities, which attenuates acute hypobaric hypoxia-induced tissue injury. This review comprehensively analyses the application of TCM in AMS and makes suggestions for more in-depth studies in the future, aiming to provide some ideas and insights for subsequent studies.
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Affiliation(s)
- Zhenhui Wu
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, China
- Department of Hematology, Affiliated Hospital of Jiangxi University of Chinese Medicine, Nanchang, China
| | - Yihao Wang
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Rong Gao
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Junru Chen
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Yingfan Chen
- Department of Traditional Chinese Medicine, The Sixth Medical Center of Chinese People’s Liberation Army General Hospital, Beijing, China
| | - Maoxing Li
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Yue Gao
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, China
- Beijing Institute of Radiation Medicine, Beijing, China
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Hudson BN, Purves JT, Hughes FM, Nagatomi J. Enzyme-induced hypoxia leads to inflammation in urothelial cells in vitro. Int Urol Nephrol 2024; 56:1565-1575. [PMID: 38133728 DOI: 10.1007/s11255-023-03900-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE To determine the contributions of different durations of hypoxia to NLRP3 inflammasome activation in urothelial cells and how ischemic changes in bladder tissues is an important chemical que that leads to pathological changes seen in BOO. METHODS A rat urothelial cell line (MYP3) was exposed to either a short duration (2 h) or long duration (6 h) of enzyme-induced hypoxia. Following exposure to a short duration of hypoxia, NO and ATP concentrations were measured from supernatant media and caspase-1 levels were measured from cell lysates. In a separate experiment, cells were fixed following hypoxia exposure and immunostained for HIF-1α stabilization. RESULTS Although short exposure of low oxygen conditions resulted in a hypoxic response in MYP3 cells, as indicated by HIF-1α stabilization and increased NO activity, NLRP3 inflammasome activation was not observed as caspase-1 activity remained unchanged. However, exposure of MYP3 cells to a longer duration of hypoxia resulted in an increase in intracellular caspase-1 activity. Furthermore, treatment with antioxidant (GSH) or TXNIP inhibitor (verapamil) attenuated the hypoxia-induced increase in caspase-1 levels indicating that hypoxia primarily drives inflammation through a ROS-mediated TXNIP/NLRP3 pathway. CONCLUSION We conclude that hypoxia induced bladder damage requires a duration that is more likely related to elevated storage pressures/hypoxia, seen in later stages of BOO, as compared to shorter duration pressure elevation/hypoxia that is encountered in normal micturition cycles or early in the BOO pathology where storage pressures are still normal.
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Affiliation(s)
- Britney N Hudson
- Department of Bioengineering, 301 Rhodes Engineering Research Center, Clemson University, Clemson, SC, 29634-0905, USA
| | - J Todd Purves
- Department of Bioengineering, 301 Rhodes Engineering Research Center, Clemson University, Clemson, SC, 29634-0905, USA
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC, USA
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Francis M Hughes
- Department of Bioengineering, 301 Rhodes Engineering Research Center, Clemson University, Clemson, SC, 29634-0905, USA
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC, USA
| | - Jiro Nagatomi
- Department of Bioengineering, 301 Rhodes Engineering Research Center, Clemson University, Clemson, SC, 29634-0905, USA.
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Han C, Zheng XX, Zhang WF. High altitude retinopathy: An overview and new insights. Travel Med Infect Dis 2024; 58:102689. [PMID: 38295966 DOI: 10.1016/j.tmaid.2024.102689] [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: 09/01/2023] [Revised: 12/30/2023] [Accepted: 01/15/2024] [Indexed: 02/04/2024]
Abstract
High altitude retinopathy (HAR) is a common ocular disorder that occurs on ascent to high altitude. There are many clinical symptoms, retinal vascular dilatation, retinal edema and hemorrhage are common. These usually do not or slightly affect vision; rarely, severe cases develop serious or permanent vision loss. At present, the research progress of HAR mainly focuses on hemodynamic changes, blood-retinal barrier damage, oxidative stress and inflammatory response. Although the related studies on HAR are limited, it shows that HAR still belongs to hypoxia, and hypobaric hypoxia plays an aggravating role in promoting the development of the disease. Various studies have demonstrated the correlation of HAR with acute mountain sickness (AMS) and high-altitude cerebral edema (HACE), so a deeper understanding of HAR is important. The slow ascent rates and ascent altitude are the key to preventing any altitude sickness. Research on traditional chinese medicine (TCM) and western medicine has been gradually carried out. Further exploration of the pathogenesis and prevention strategies of HAR will provide better guidance for doctors and high-altitude travelers.
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Affiliation(s)
- Cong Han
- Department of Ophthalmology, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, Gansu, PR China.
| | - Xing-Xing Zheng
- Department of Ophthalmology, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, Gansu, PR China.
| | - Wen-Fang Zhang
- Department of Ophthalmology, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, Gansu, PR China.
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Nowak-Sliwinska P, Griffioen AW. Rising impact of cell death research. Apoptosis 2023; 28:1503-1504. [PMID: 37751104 DOI: 10.1007/s10495-023-01895-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2023] [Indexed: 09/27/2023]
Affiliation(s)
- Patrycja Nowak-Sliwinska
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland.
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland.
- Translational Research Center in Oncohaematology, Geneva, Switzerland.
| | - Arjan W Griffioen
- Angiogenesis Laboratory, Department of Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, 1081 HV, Amsterdam, The Netherlands.
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Park SY, Kang HM, Park G, Oh JW, Choi YW. OGD/R-induced ferroptosis and pyroptosis in retinal pigment epithelium cells: Role of PLD1 and PLD2 modulation. Cell Biochem Funct 2023; 41:1162-1173. [PMID: 37691020 DOI: 10.1002/cbf.3848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/20/2023] [Accepted: 08/24/2023] [Indexed: 09/12/2023]
Abstract
This study investigated the role of phospholipase D (PLD) in retinal ischemia-reperfusion (I/R) injury using an oxygen-glucose deprivation/reperfusion (OGD/R) model commonly used in retinal I/R injury research. To create an in vitro cellular I/R model, pharmacological inhibitors and small interfering RNA (siRNA) were used to target PLD1 and PLD2 in retinal pigment epithelial (RPE) cells. Treatment with PLD inhibitors and siRNA reduced reactive oxygen species (ROS) and malondialdehyde (MDA) induced by OGD/R in RPE cells and increased the levels of superoxide dismutase (SOD) and glutathione (GSH), indicating a reduction in oxidative damage and improvement in the antioxidant system. Next, we showed that inhibiting PLD1 or PLD2 reduced intracellular iron levels and lipid peroxidation, which are critical factors in ferroptosis. Additionally, PLD1 and PLD2 modulated the expression of proteins involved in the regulation of ferroptosis, including GPX4, SLC7A11, FTH1, and ACSL4. We also investigated the roles of PLD1 and PLD2 in preventing pyroptosis, another form of programmed cell death associated with inflammation. Our study found that OGD/R significantly increased the production of pro-inflammatory cytokines and activated caspase-1, NLRP3, ASC, cleaved-caspase 1 (C-caspase-1), and GSDMD-N in RPE cells, indicating pyroptosis induction. However, PLD1 and PLD2 inhibition or knockdown significantly inhibited the production of pro-inflammatory cytokines and activation of the NLRP3 inflammasome, Taken together, our findings support the hypothesis that the PLD signaling pathway plays a key role in OGD/R-induced ferroptosis and pyroptosis induction and may be a potential therapeutic target for preventing or treating retinal dysfunction and degeneration.
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Affiliation(s)
- Sun Young Park
- Bio-IT Fusion Technology Research Institute, Pusan National University, Geumjeong-gu, Busan, Republic of Korea
| | - He Mi Kang
- Department of Horticultural Bioscience, Pusan National University, Miryang, Gyeongsangnam-do, Republic of Korea
| | - Geuntae Park
- Department of Nanomaterials Engineering, Pusan National University, Geumjeong-gu, Busan, Republic of Korea
| | - Jin-Woo Oh
- Department of Nanomaterials Engineering, Pusan National University, Geumjeong-gu, Busan, Republic of Korea
| | - Young-Whan Choi
- Bio-IT Fusion Technology Research Institute, Pusan National University, Geumjeong-gu, Busan, Republic of Korea
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Shen Z, Huang D, Jia N, Zhao S, Pei C, Wang Y, Wu Y, Wang X, Shi S, Wang F, He Y, Wang Z. Protective effects of Eleutheroside E against high-altitude pulmonary edema by inhibiting NLRP3 inflammasome-mediated pyroptosis. Biomed Pharmacother 2023; 167:115607. [PMID: 37776644 DOI: 10.1016/j.biopha.2023.115607] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 10/02/2023] Open
Abstract
Eleutheroside E (EE) is a primary active component of Acanthopanax senticosus, which has been reported to inhibit the expression of inflammatory genes, but the underlying mechanisms remain elusive. High-altitude pulmonary edema (HAPE) is a severe complication of high-altitude exposure occurring after ascent above 2500 m. However, effective and safe preventative measures for HAPE still need to be improved. This study aimed to elucidate the preventative potential and underlying mechanism of EE in HAPE. Rat models of HAPE were established through hypobaric hypoxia. Mechanistically, hypobaric hypoxia aggravates oxidative stress and upregulates (pro)-inflammatory cytokines, activating NOD-like receptor protein 3 (NLRP3) inflammasome-mediated pyroptosis, eventually leading to HAPE. EE suppressed NLRP3 inflammasome-mediated pyroptosis by inhibiting the nuclear translocation of nuclear factor kappa-Β (NF-κB), thereby protecting the lung from HAPE. However, nigericin (Nig), an NLRP3 activator, partially abolished the protective effects of EE. These findings suggest EE is a promising agent for preventing HAPE induced by NLRP3 inflammasome-mediated pyroptosis.
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Affiliation(s)
- Zherui Shen
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Demei Huang
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Nan Jia
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Sijing Zhao
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Caixia Pei
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Yilan Wang
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Yongcan Wu
- Chongqing Medical University, Chongqing 400016, China
| | - Xiaomin Wang
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Shihua Shi
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Fei Wang
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China.
| | - Yacong He
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China; State Key Laboratory of Southwestern Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Zhenxing Wang
- Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China.
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Hu S, Wang L, Xu Y, Li F, Wang T. Disulfiram attenuates hypoxia-induced pulmonary hypertension by inhibiting GSDMD cleavage and pyroptosis in HPASMCs. Respir Res 2022; 23:353. [PMID: 36527086 PMCID: PMC9756478 DOI: 10.1186/s12931-022-02279-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) is characterized by progressive pulmonary arterial remodelling, associated with different severities of inflammation and altered immune processes. Disulfiram eliminates the formation of N-gasdermin D (GSDMD) plasma membrane pores to prevent pyroptosis. Pyroptosis is a form of lytic cell death characterized by inflammasome activation and proinflammatory cytokine release that acts in the development of PH. We sought to investigate whether disulfiram could alleviate hypoxia-induced PH by inhibiting pyroptosis. METHODS To investigate whether disulfiram alleviates the progression of pulmonary hypertension, rodents were exposed to chronic hypoxia (10% oxygen, 4 weeks) to induce PH. The severity of PH was assessed by measuring right ventricular systolic pressure, mean pulmonary artery pressure, and the degree of right ventricular hypertrophy. Western blotting was used to measure proteins associated with the pyroptosis pathway, and ELISA was performed to measure the secretion of IL-18 and IL-1β, both of which are the primary methods for assessing pyroptosis. RESULTS IL-18 and IL-1β concentrations were higher in patients with PH than in normal controls. Disulfiram suppressed the progression of PH in mice and rats through the alleviation of pulmonary arterial remodelling. Pyroptosis-related proteins and the inflammasome were activated in rodent models of PH. Disulfiram inhibited the processing of GSDMD into N-GSDMD and attenuated the secretion of IL-1β and IL18. In vivo experiments showed that disulfiram also inhibited lytic death in HPASMCs. CONCLUSIONS Disulfiram treatment reduces PH progression through suppressing vascular remodelling by inhibiting GSDMD cleavage and pyroptosis. It might become a novel therapeutic option for the treatment of PH.
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Affiliation(s)
- Shunlian Hu
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 People’s Republic of China ,grid.33199.310000 0004 0368 7223The Center for Biomedical Research, National Health Committee (NHC) Key Laboratory of Respiratory Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Lu Wang
- grid.24696.3f0000 0004 0369 153XDepartment of Respiratory and Critical Care Medicine, Miyun Teaching Hospital of Capital Medical University, Beijing, People’s Republic of China ,grid.411472.50000 0004 1764 1621Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Miyun District, Beijing, People’s Republic of China ,Department of Respiratory and Critical Care Medicine, Beijing Miyun Hospital, Beijing, People’s Republic of China
| | - Yahan Xu
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 People’s Republic of China ,grid.33199.310000 0004 0368 7223The Center for Biomedical Research, National Health Committee (NHC) Key Laboratory of Respiratory Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Fajiu Li
- grid.459326.fThe Sixth Hospital of Wuhan City, Affiliated Hospital of Jianghan University, Beijing, People’s Republic of China
| | - Tao Wang
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 People’s Republic of China ,grid.33199.310000 0004 0368 7223The Center for Biomedical Research, National Health Committee (NHC) Key Laboratory of Respiratory Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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