1
|
Lin K, Zhang Y, Shen Y, Xu Y, Huang M, Liu X. Hydrogen Sulfide can Scavenge Free Radicals to Improve Spinal Cord Injury by Inhibiting the p38MAPK/mTOR/NF-κB Signaling Pathway. Neuromolecular Med 2024; 26:26. [PMID: 38907170 DOI: 10.1007/s12017-024-08794-1] [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: 04/21/2024] [Accepted: 05/31/2024] [Indexed: 06/23/2024]
Abstract
Spinal cord injury (SCI) causes irreversible cell loss and neurological dysfunctions. Presently, there is no an effective clinical treatment for SCI. It can be the only intervention measure by relieving the symptoms of patients such as pain and fever. Free radical-induced damage is one of the validated mechanisms in the complex secondary injury following primary SCI. Hydrogen sulfide (H2S) as an antioxidant can effectively scavenge free radicals, protect neurons, and improve SCI by inhibiting the p38MAPK/mTOR/NF-κB signaling pathway. In this report, we analyze the pathological mechanism of SCI, the role of free radical-mediated the p38MAPK/mTOR/NF-κB signaling pathway in SCI, and the role of H2S in scavenging free radicals and improving SCI.
Collapse
Affiliation(s)
- Kexin Lin
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yong Zhang
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yanyang Shen
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yiqin Xu
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Min Huang
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Xuehong Liu
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China.
| |
Collapse
|
2
|
Koc A, Koc DS, Askin CI, Kara H, Ozturk Fincan GS, Ozger Ilhan S, Sarioglu Y. Effects of hydrogen sulfide on relaxation responses in the lower esophageal sphincter in rabbits: the potential role of potassium channels. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:1537-1550. [PMID: 37668686 DOI: 10.1007/s00210-023-02695-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/25/2023] [Indexed: 09/06/2023]
Abstract
Hydrogen sulfide (H2S) is a significant physiologic inhibitory neurotransmitter. The main goal of this research was to examine the contribution of diverse potassium (K+) channels and nitric oxide (NO) in mediating the H2S effect on electrical field stimulation (EFS)-induced neurogenic contractile responses in the lower esophageal sphincter (LES). EFS-induced contractile responses of rabbit isolated LES strips were recorded using force transducers in organ baths that contain Krebs-Henseleit solutions (20 ml). Cumulative doses of NaHS, L-cysteine, PAG, and AOAA were evaluated in NO-dependent and NO-independent groups. The experiments were conducted again in the presence of K+ channel blockers. In both NO-dependent and NO-independent groups, NaHS, L-cysteine, PAG, and AOAA significantly reduced EFS-induced contractile responses. In the NO-dependent group, the effect of NaHS and L-cysteine decreased in the presence of 4-AP, and also the effect of NaHS decreased in the NO-dependent and independent group in the presence of TEA. In the NO-independent group, K+ channel blockers didn't change L-cysteine-induced relaxations. K+ channel blockers had no impact on the effects of PAG and AOAA. In addition, NaHS significantly relaxed 80-mM KCl-induced contractions, whereas L-cysteine, PAG, and AOAA did not. In the present study, H2S decreased the amplitudes of EFS-induced contraction responses. These results suggest that Kv channels and NO significantly contribute to exogenous H2S and endogenous H2S precursor L-cysteine inhibitory effect on lower esophageal sphincter smooth muscle.
Collapse
Affiliation(s)
- Aysegul Koc
- Department of Medical Pharmacology, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Derya Sebile Koc
- Department of Medical Pharmacology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Celil Ilker Askin
- Department of Medical Pharmacology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Halil Kara
- Department of Medical Pharmacology, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey.
| | | | - Sevil Ozger Ilhan
- Department of Medical Pharmacology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Yusuf Sarioglu
- Department of Medical Pharmacology, Faculty of Medicine, Istinye University, Istanbul, Turkey
| |
Collapse
|
3
|
Roubenne L, Laisné M, Benoist D, Campagnac M, Prunet B, Pasdois P, Cardouat G, Ducret T, Quignard JF, Vacher P, Baudrimont I, Marthan R, Berger P, Le Grand B, Freund-Michel V, Guibert C. OP2113, a new drug for chronic hypoxia-induced pulmonary hypertension treatment in rat. Br J Pharmacol 2023; 180:2802-2821. [PMID: 37351910 DOI: 10.1111/bph.16174] [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: 11/15/2022] [Revised: 06/02/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND AND PURPOSE Pulmonary hypertension (PH) is a cardiovascular disease characterised by an increase in pulmonary arterial (PA) resistance leading to right ventricular (RV) failure. Reactive oxygen species (ROS) play a major role in PH. OP2113 is a drug with beneficial effects on cardiac injuries that targets mitochondrial ROS. The aim of the study was to address the in vivo therapeutic effect of OP2113 in PH. EXPERIMENTAL APPROACH PH was induced by 3 weeks of chronic hypoxia (CH-PH) in rats treated with OP2113 or its vehicle via subcutaneous osmotic mini-pumps. Haemodynamic parameters and both PA and heart remodelling were assessed. Reactivity was quantified in PA rings and in RV or left ventricular (LV) cardiomyocytes. Oxidative stress was detected by electron paramagnetic resonance and western blotting. Mitochondrial mass and respiration were measured by western blotting and oxygraphy, respectively. KEY RESULTS In CH-PH rats, OP2113 reduced the mean PA pressure, PA remodelling, PA hyperreactivity in response to 5-HT, the contraction slowdown in RV and LV and increased the mitochondrial mass in RV. Interestingly, OP2113 had no effect on haemodynamic parameters, both PA and RV wall thickness and PA reactivity, in control rats. Whereas oxidative stress was evidenced by an increase in protein carbonylation in CH-PH, this was not affected by OP2113. CONCLUSION AND IMPLICATIONS Our study provides evidence for a selective protective effect of OP2113 in vivo on alterations in both PA and RV from CH-PH rats without side effects in control rats.
Collapse
Affiliation(s)
- Lukas Roubenne
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
- OP2 Drugs SAS, Pessac, France
| | - Margaux Laisné
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
| | - David Benoist
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
- Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, F-33000, Bordeaux, France
| | | | | | - Philippe Pasdois
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
- Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, F-33000, Bordeaux, France
| | | | - Thomas Ducret
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
| | | | - Pierre Vacher
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
| | | | - Roger Marthan
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
- CHU de Bordeaux, Service d'Explorations Fonctionnelles Respiratoires, INSERM, U 1045, Bordeaux, France
| | - Patrick Berger
- Univ. Bordeaux, INSERM, CRCTB, U 1045, F-33000, Bordeaux, France
- CHU de Bordeaux, Service d'Explorations Fonctionnelles Respiratoires, INSERM, U 1045, Bordeaux, France
| | | | | | | |
Collapse
|
4
|
Wang MT, Chi PL, Cheng CC, Huang WC, Chen LW. Application of homocysteine as a non-invasive and effort-free measurements for risk assessment of patients with pulmonary hypertension. Cardiol J 2023; 31:285-299. [PMID: 37772357 DOI: 10.5603/cj.92813] [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: 11/19/2022] [Revised: 06/24/2023] [Accepted: 08/09/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Current guideline-recommended multiparameters used to assess the risk levels of pulmonary arterial hypertension (PAH) are invasive hemodynamic measurements or effort-dependent exercise tests. Serum natriuretic peptide is only one kind of effort-free biomarker that has been adopted for risk assessment. This study aimed to investigate the application of homocysteine as a non-invasive and effort-free measurement for the risk assessment of patients with PAH. METHODS Samples of 50 patients diagnosed with PAH via right heart catheterization were obtained, and the patients were divided into low-, intermediate- and high-risk groups for further analysis. Additionally, serum N-terminal prohormone of B-type natriuretic peptide (NT-proBNP) and homocysteine levels of monocrotaline (MCT)-induced PAH rats were analyzed at each week with progressed severity of PAH, and they were sacrificed on day 28 with pathology being assessed. RESULTS Hyperhomocysteinemia was an independent predictor (odds ratio [OR]: 1.256; 95% confidence interval [CI]: 1.002-1.574) and showed a linear correlation with NT-proBNP. Hyperhomocysteinemia could discriminate between low/intermediate and high-risk levels in PAH with a cut-off value in 12 μmol/L. Moreover, the elevated homocysteine levels by weeks in MCT rats also demonstrated the association between homocysteine and the severity of PAH. CONCLUSIONS Homocysteine can be a non-invasive and effort-free risk assessment for patients with pulmonary hypertension. Homocysteine level had a linear correlation with NT-proBNP level, and patients with hyperhomocysteinemia had a higher risk level, higher NT-proBNP level, and decreased lower diffusing capacity for carbon monoxide. The correlation between homocysteine level and PAH severity was also demonstrated in MCT rats.
Collapse
Affiliation(s)
- Mei-Tzu Wang
- Institute of Emergency and Critical Care Medicine, National Yang Ming Chiao Tung University, Taipei City, Taiwan
- Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan
- Department of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei City, Taiwan
| | - Pei-Ling Chi
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan
| | - Chin-Chang Cheng
- Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan
- Department of Physical Therapy, Fooyin University, Kaohsiung, Taiwan
| | - Wei-Chun Huang
- Department of Critical Care Medicine, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan.
- Department of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei City, Taiwan.
- Department of Physical Therapy, Fooyin University, Kaohsiung, Taiwan.
| | - Lee-Wei Chen
- Department of Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- Institute of Emergency and Critical Care Medicine, National Yang Ming Chiao Tung University, Taipei City, Taiwan
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
| |
Collapse
|
5
|
Ozbek EN, Istanbullu H, Kızrak U, Alan Albayrak E, Sevin G, Yetik-Anacak G. The Effects of Novel Triazolopyrimidine Derivatives on H2S Production in Lung and Vascular Tonus in Aorta. Pharmacology 2023; 108:530-539. [PMID: 37696255 DOI: 10.1159/000533419] [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: 06/03/2023] [Accepted: 07/31/2023] [Indexed: 09/13/2023]
Abstract
INTRODUCTION Hydrogen sulfide (H2S), known as a third gasotransmitter, is a signaling molecule that plays a regulatory role in physiological and pathophysiological processes. Decreased H2S levels were reported in inflammatory respiratory diseases such as asthma, chronic obstructive pulmonary disease, and pulmonary hypertension. H2S donors or drugs that increase H2S have emerged as novel treatments for inflammatory respiratory diseases. We previously showed that resveratrol (RVT) causes vascular relaxation and antioxidant effects by inducing H2S production. In the current study, we synthesized a new molecule Cpd2, as an RVT analog. We examined the effect of Cpd2 and its precursor chalcone compound (Cpd1) on H2S formation under both healthy and oxidative stress conditions in the lung, as well as vascular relaxation in the aorta. METHODS Cpd2 synthesized from Cpd1 with microwaved in basic conditions. H2S formation was measured by H2S biosensor in the mice lungs under both healthy and pyrogallol-induced oxidative stress conditions in the presence/absence of H2S synthesis inhibitor aminooxyacetic acid (AOAA). The effect of compounds on vascular tonus is investigated in mice aorta by DMT myograph. RESULTS RVT and Cpd2 significantly increased l-cysteine (l-cys) induced-H2S formation in the lung homogenates of healthy mice, but Cpd1 did not. Superoxide anion generator pyrogallol caused a decrease in H2S levels in mice lungs and Cpd2 restored it. Inhibition of Cpd2-induced H2S formation by AOAA confirmed that Cpd2 increases endogenous H2S formation in both healthy and oxidative stress conditions. Furthermore, we found that both Cpd1 and Cpd2 (10-8-10-4 M) caused vascular relaxation in mice aorta. DISCUSSION AND CONCLUSION We found that Cpd2, a newly synthesized RVT analog, is an H2S-inducing molecule and vasorelaxant similar to RVT. Since H2S has antioxidant and anti-inflammatory effects, Cpd2 has a potential for the treatment of respiratory diseases where oxidative stress and decreased H2S levels are present.
Collapse
Affiliation(s)
- Emine Nur Ozbek
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Huseyin Istanbullu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Izmir Katip Celebi University, Izmir, Turkey
| | - Umran Kızrak
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Elif Alan Albayrak
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Gülnur Sevin
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Gunay Yetik-Anacak
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
- Department of Pharmacology, Faculty of Pharmacy, Acıbadem Mehmet ali Aydınlar University, Istanbul, Turkey
| |
Collapse
|
6
|
The Role of Hydrogen Sulfide Targeting Autophagy in the Pathological Processes of the Nervous System. Metabolites 2022; 12:metabo12090879. [PMID: 36144282 PMCID: PMC9502065 DOI: 10.3390/metabo12090879] [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: 08/11/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Autophagy is an important cellular process, involving the transportation of cytoplasmic contents in the double membrane vesicles to lysosomes for degradation. Autophagy disorder contributes to many diseases, such as immune dysfunction, cancers and nervous system diseases. Hydrogen sulfide (H2S) is a volatile and toxic gas with a rotten egg odor. For a long time, it was considered as an environmental pollution gas. In recent years, H2S is regarded as the third most important gas signal molecule after NO and CO. H2S has a variety of biological functions and can play an important role in a variety of physiological and pathological processes. Increasingly more evidences show that H2S can regulate autophagy to play a protective role in the nervous system, but the mechanism is not fully understood. In this review, we summarize the recent literatures on the role of H2S in the pathological process of the nervous system by regulating autophagy, and analyze the mechanism in detail, hoping to provide the reference for future related research.
Collapse
|
7
|
Turhan K, Alan E, Yetik-Anacak G, Sevin G. H2S releasing sodium sulfide protects against pulmonary hypertension by improving vascular responses in monocrotaline-induced pulmonary hypertension. Eur J Pharmacol 2022; 931:175182. [DOI: 10.1016/j.ejphar.2022.175182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/15/2022] [Accepted: 08/01/2022] [Indexed: 11/17/2022]
|
8
|
Li C, Zhu H, Zhang S, Meng F, Li S, Li G, Zha J, Wu S, Zhu L, Dai A. Astragaloside IV ameliorates pulmonary vascular remodeling in hypoxia-induced pulmonary hypertension by restraining the T follicular helper cell response and expanding T follicular regulatory cell response. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 102:154171. [PMID: 35636165 DOI: 10.1016/j.phymed.2022.154171] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/11/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Pulmonary hypertension (PH) is a progressive disorder lacking a validated and effective therapy which characterized by elevated pulmonary arterial pressure, vascular remodeling and eventual death. FDA approved sildenafil is being used as a first-line drug for PH, however, neither survival rates nor quality of life have been improved because of side effects and patient noncompliance. Thus, the exploration of novel therapeutic drugs is urgently needed. Astragaloside IV (ASIV) exhibits a protective effect on HPH, but its mechanisms of action is unclear. HYPOTHESIS CD4+T cell subsets, Tfh and Tfr cells, may contribute to the development of chronic hypoxia-induced PH (HPH). We hypothesized that ASIV could effectively ameliorates pulmonary vascular remodeling of HPH by restraining the Tfh cell response and expanding Tfr cell response. METHODS AND RESULTS HPH mice model was established by exposure to chronic hypoxia for 21 days. Mice were randomly assigned to six groups: NaCl group, model group, SN group (100 mg/kg of sildenafil), low-dose group (20 mg/kg of ASIV), medium-dose group (40 mg/kg of ASIV) and high-dose group (80 mg/kg of ASIV). Primary culture and identification of distal pulmonary artery smooth muscle cells (PASMCs) in mice were established. Here, we demonstrated that ASIV treatment could significantly ameliorate the increase of mean PAP, RV/ (LV+S) ratio and PAMT in HPH mice. ASIV inhibited Tfh cell differentiation and IL-21 production, but promoted Tfr cell differentiation and TGF-β, IL-10 production. Chronic hypoxia promoted germinal center B cell responses, which inhibited by ASIV. ASIV regulated Tfh and Tfr cell differentiation by inhibiting the phosphorylation of mTOR signaling pathway, and the effect of ASIV-H was better than that observed in the SN group. ASIV inhibited the proliferation, migration and adhesion of PASMCs in vitro. Moreover, ASIV significantly downregulated the protein level of RhoA and upregulated the protein level of p27 in PASMCs under hypoxic condition. CONCLUSION Collectively, ASIV may regulate Tfh and Tfr cell responses to subsequently repress pulmonary vascular remodeling and hypoxic pulmonary hypertension.
Collapse
Affiliation(s)
- Cheng Li
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - Hao Zhu
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - Shaoze Zhang
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - Fang Meng
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - San Li
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - Guang Li
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China
| | - Jun Zha
- Department of Respiratory Diseases, Medical School, Hunan University of Chinese Medicine, Changsha, Hunan 410208, PR China
| | - Shangjie Wu
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China
| | - Liming Zhu
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China.
| | - Aiguo Dai
- Department of Respiratory and Critical Care Medicine, Hunan Provincial People's Hospital/The First Affiliated Hospital of HunanNormal University, Changsha, Hunan 410016, PR China; Department of Respiratory Diseases, Medical School, Hunan University of Chinese Medicine, Changsha, Hunan 410208, PR China.
| |
Collapse
|
9
|
Hydrogen Sulfide Plays an Important Role by Regulating Endoplasmic Reticulum Stress in Diabetes-Related Diseases. Int J Mol Sci 2022; 23:ijms23137170. [PMID: 35806174 PMCID: PMC9266787 DOI: 10.3390/ijms23137170] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/25/2022] [Accepted: 06/27/2022] [Indexed: 02/05/2023] Open
Abstract
Endoplasmic reticulum (ER) plays important roles in protein synthesis, protein folding and modification, lipid biosynthesis, calcium storage, and detoxification. ER homeostasis is destroyed by physiological and pharmacological stressors, resulting in the accumulation of misfolded proteins, which causes ER stress. More and more studies have shown that ER stress contributes to the pathogenesis of many diseases, such as diabetes, inflammation, neurodegenerative diseases, cancer, and autoimmune diseases. As a toxic gas, H2S has, in recent years, been considered the third most important gas signal molecule after NO and CO. H2S has been found to have many important physiological functions and to play an important role in many pathological and physiological processes. Recent evidence shows that H2S improves the body’s defenses to many diseases, including diabetes, by regulating ER stress, but its mechanism has not yet been fully understood. We therefore reviewed recent studies of the role of H2S in improving diabetes-related diseases by regulating ER stress and carefully analyzed its mechanism in order to provide a theoretical reference for future research.
Collapse
|
10
|
Wang Z, Bian W, Yan Y, Zhang DM. Functional Regulation of KATP Channels and Mutant Insight Into Clinical Therapeutic Strategies in Cardiovascular Diseases. Front Pharmacol 2022; 13:868401. [PMID: 35837280 PMCID: PMC9274113 DOI: 10.3389/fphar.2022.868401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/03/2022] [Indexed: 11/13/2022] Open
Abstract
ATP-sensitive potassium channels (KATP channels) play pivotal roles in excitable cells and link cellular metabolism with membrane excitability. The action potential converts electricity into dynamics by ion channel-mediated ion exchange to generate systole, involved in every heartbeat. Activation of the KATP channel repolarizes the membrane potential and decreases early afterdepolarization (EAD)-mediated arrhythmias. KATP channels in cardiomyocytes have less function under physiological conditions but they open during severe and prolonged anoxia due to a reduced ATP/ADP ratio, lessening cellular excitability and thus preventing action potential generation and cell contraction. Small active molecules activate and enhance the opening of the KATP channel, which induces the repolarization of the membrane and decreases the occurrence of malignant arrhythmia. Accumulated evidence indicates that mutation of KATP channels deteriorates the regulatory roles in mutation-related diseases. However, patients with mutations in KATP channels still have no efficient treatment. Hence, in this study, we describe the role of KATP channels and subunits in angiocardiopathy, summarize the mutations of the KATP channels and the functional regulation of small active molecules in KATP channels, elucidate the potential mechanisms of mutant KATP channels and provide insight into clinical therapeutic strategies.
Collapse
Affiliation(s)
- Zhicheng Wang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Weikang Bian
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yufeng Yan
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Dai-Min Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- Department of Cardiology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, China
- *Correspondence: Dai-Min Zhang,
| |
Collapse
|
11
|
Liu XY, Qian LL, Wang RX. Hydrogen Sulfide-Induced Vasodilation: The Involvement of Vascular Potassium Channels. Front Pharmacol 2022; 13:911704. [PMID: 35721210 PMCID: PMC9198332 DOI: 10.3389/fphar.2022.911704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/02/2022] [Indexed: 12/21/2022] Open
Abstract
Hydrogen sulfide (H2S) has been highlighted as an important gasotransmitter in mammals. A growing number of studies have indicated that H2S plays a key role in the pathophysiology of vascular diseases and physiological vascular homeostasis. Alteration in H2S biogenesis has been reported in a variety of vascular diseases and H2S supplementation exerts effects of vasodilation. Accumulating evidence has shown vascular potassium channels activation is involved in H2S-induced vasodilation. This review aimed to summarize and discuss the role of H2S in the regulation of vascular tone, especially by interaction with different vascular potassium channels and the underlying mechanisms.
Collapse
Affiliation(s)
- Xiao-Yu Liu
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
| | - Ling-Ling Qian
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
| | - Ru-Xing Wang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
| |
Collapse
|
12
|
Implications of Hydrogen Sulfide in Development of Pulmonary Hypertension. Biomolecules 2022; 12:biom12060772. [PMID: 35740897 PMCID: PMC9221447 DOI: 10.3390/biom12060772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/02/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
The pathological mechanisms underlying pulmonary hypertension (PH), as well as its treatment strategy, are crucial issues in this field. This review aimed to summarize the pathological mechanisms by which the hydrogen sulfide (H2S) pathway contributes to PH development and its future implications. The data in this review were obtained from Medline and PubMed sources up to 2022 using the search terms "hydrogen sulfide" and "pulmonary hypertension". In the review, we discussed the significance of endogenous H2S pathway alteration in PH development and showed the advance of the role of H2S as the third gasotransmitter in the mechanisms for hypoxic PH, monocrotaline-induced PH, high blood flow-induced PH, and congenital heart disease-associated PH. Notably, H2S plays a crucial role in the development of PH via certain mechanisms, such as inhibiting the proliferation of pulmonary artery smooth muscle cells, suppressing the inflammation and oxidative stress of pulmonary artery endothelial cells, inducing pulmonary artery smooth muscle cell apoptosis, and interacting with other gaseous signaling pathways. Recently, a variety of H2S donors were developed, including naturally occurring donors and synthetic H2S donors. Therefore, understanding the role of H2S in PH development may help in further exploring novel potential therapeutic targets of PH.
Collapse
|
13
|
Christou H, Khalil RA. Mechanisms of pulmonary vascular dysfunction in pulmonary hypertension and implications for novel therapies. Am J Physiol Heart Circ Physiol 2022; 322:H702-H724. [PMID: 35213243 PMCID: PMC8977136 DOI: 10.1152/ajpheart.00021.2022] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/22/2022] [Accepted: 02/22/2022] [Indexed: 12/21/2022]
Abstract
Pulmonary hypertension (PH) is a serious disease characterized by various degrees of pulmonary vasoconstriction and progressive fibroproliferative remodeling and inflammation of the pulmonary arterioles that lead to increased pulmonary vascular resistance, right ventricular hypertrophy, and failure. Pulmonary vascular tone is regulated by a balance between vasoconstrictor and vasodilator mediators, and a shift in this balance to vasoconstriction is an important component of PH pathology, Therefore, the mainstay of current pharmacological therapies centers on pulmonary vasodilation methodologies that either enhance vasodilator mechanisms such as the NO-cGMP and prostacyclin-cAMP pathways and/or inhibit vasoconstrictor mechanisms such as the endothelin-1, cytosolic Ca2+, and Rho-kinase pathways. However, in addition to the increased vascular tone, many patients have a "fixed" component in their disease that involves altered biology of various cells in the pulmonary vascular wall, excessive pulmonary artery remodeling, and perivascular fibrosis and inflammation. Pulmonary arterial smooth muscle cell (PASMC) phenotypic switch from a contractile to a synthetic and proliferative phenotype is an important factor in pulmonary artery remodeling. Although current vasodilator therapies also have some antiproliferative effects on PASMCs, they are not universally successful in halting PH progression and increasing survival. Mild acidification and other novel approaches that aim to reverse the resident pulmonary vascular pathology and structural remodeling and restore a contractile PASMC phenotype could ameliorate vascular remodeling and enhance the responsiveness of PH to vasodilator therapies.
Collapse
Affiliation(s)
- Helen Christou
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raouf A Khalil
- Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
14
|
Sun HJ, Wang ZC, Nie XW, Bian JS. Therapeutic potential of carbon monoxide in hypertension-induced vascular smooth muscle cell damage revisited: from physiology and pharmacology. Biochem Pharmacol 2022; 199:115008. [PMID: 35318039 DOI: 10.1016/j.bcp.2022.115008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 01/14/2023]
Abstract
As a chronic and progressive disorder, hypertension remains to be a serious public health problem around the world. Among the different types of hypertension, pulmonary arterial hypertension (PAH) is a devastating disease associated with pulmonary arteriole remodeling, right ventricular failure and death. The contemporary management of systemic hypertension and PAH has substantially grown since more therapeutic targets and/or agents have been developed. Evolving treatment strategies targeting the vascular remodeling lead to improving outcomes in patients with hypertension, nevertheless, significant advancement opportunities for developing better antihypertensive drugs remain. Carbon monoxide (CO), an active endogenous gasotransmitter along with hydrogen sulfide (H2S) and nitric oxide (NO), is primarily generated by heme oxygenase (HO). Cumulative evidence suggests that CO is considered as an important signaling molecule under both physiological and pathological conditions. Studies have shown that CO confers a number of biological and pharmacological properties, especially its involvement in the pathological process and treatment of hypertension-related vascular remodeling. This review will critically outline the roles of CO in hypertension-associated vascular remodeling and discuss the underlying mechanisms for the protective effects of CO against hypertension and vascular remodeling. In addition, we will propose the challenges and perspectives of CO in hypertensive vascular remodeling. It is expected that a comprehensive understanding of CO in the vasculature might be essential to translate CO to be a novel pharmacological agent for hypertension-induced vascular remodeling.
Collapse
Affiliation(s)
- Hai-Jian Sun
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Zi-Chao Wang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Xiao-Wei Nie
- Shenzhen Key Laboratory of Respiratory Diseases, Shenzhen People's Hospital (The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518055, China.
| | - Jin-Song Bian
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu 215000, China.
| |
Collapse
|
15
|
JK-2 loaded electrospun membrane for promoting bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112471. [PMID: 34702545 DOI: 10.1016/j.msec.2021.112471] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/22/2021] [Accepted: 09/28/2021] [Indexed: 12/16/2022]
Abstract
Hydrogen sulfide (H2S) has been as an essential gasotransmitter and a potential therapeutic approach for several biomedical treatments such as cardiovascular disorders, hypertension, and other diseases. The endogenous and exogenous H2S also plays a crucial role in the bone anabolic process and a protective mechanism in cell signalling. In this study, we have utilized two types of polymers, polycaprolactone (PCL) and gelatin (Gel), for the fabrication of JK-2 (H2S donor) loaded nanofibrous scaffold via electrospinning process for bone healing and bone tissue engineering. Comparing the PCL/Gel and PCL/Gel-JK-2 scaffolds, the latter demonstrated enhanced cell adhesion and proliferation capabilities. Furthermore, both experimental scaffolds have been subjected to an in vivo experiment for 4 and 8 weeks in a bone-defect model of a rabbit to determine their biological responses under physiological conditions. There was an obvious increase in bone regeneration in the PCL/Gel-JK-2 group compared to the control and PCL/Gel groups. These results indicate the use of PCL/Gel scaffolds loaded with JK-2 should be considered for possible bone regeneration.
Collapse
|