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Wang Y, Yan C, Liang C, Liu Y, Li H, Zhang C, Duan X, Pan Y. Sensitive Materials Used in Surface Acoustic Wave Gas Sensors for Detecting Sulfur-Containing Compounds. Polymers (Basel) 2024; 16:457. [PMID: 38399835 PMCID: PMC10892976 DOI: 10.3390/polym16040457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
There have been many studies on surface acoustic wave (SAW) sensors for detecting sulfur-containing toxic or harmful gases. This paper aims to give an overview of the current state of polymer films used in SAW sensors for detecting deleterious gases. By covering most of the important polymer materials, the structures and types of polymers are summarized, and a variety of devices with different frequencies, such as delay lines and array sensors for detecting mustard gas, hydrogen sulfide, and sulfur dioxide, are introduced. The preparation method of polymer films, the sensitivity of the SAW gas sensor, the limit of detection, the influence of temperature and humidity, and the anti-interference ability are discussed in detail. The advantages and disadvantages of the films are analyzed, and the potential application of polymer films in the future is also forecasted.
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Affiliation(s)
- Yuhang Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; (Y.W.); (Y.L.); (H.L.); (X.D.)
| | - Cancan Yan
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China;
| | - Chenlong Liang
- Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Liu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; (Y.W.); (Y.L.); (H.L.); (X.D.)
| | - Haoyang Li
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; (Y.W.); (Y.L.); (H.L.); (X.D.)
| | - Caihong Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; (Y.W.); (Y.L.); (H.L.); (X.D.)
| | - Xine Duan
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; (Y.W.); (Y.L.); (H.L.); (X.D.)
| | - Yong Pan
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China;
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Kim DS, Santana Maldonado CM, Giulivi C, Rumbeiha WK. Metabolomic Signatures of Brainstem in Mice following Acute and Subchronic Hydrogen Sulfide Exposure. Metabolites 2024; 14:53. [PMID: 38248856 PMCID: PMC10819975 DOI: 10.3390/metabo14010053] [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: 12/21/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Hydrogen sulfide (H2S) is an environmental toxicant of significant health concern. The brain is a major target in acute H2S poisoning. This study was conducted to test the hypothesis that acute and subchronic ambient H2S exposures alter the brain metabolome. Male 7-8-week-old C57BL/6J mice were exposed by whole-body inhalation to 1000 ppm H2S for 45 min and euthanized at 5 min or 72 h for acute exposure. For subchronic study, mice were exposed to 5 ppm H2S 2 h/day, 5 days/week for 5 weeks. Control mice were exposed to room air. The brainstem was removed for metabolomic analysis. Enrichment analysis showed that the metabolomic profiles in acute and subchronic H2S exposures matched with those of cerebral spinal fluid from patients with seizures or Alzheimer's disease. Acute H2S exposure decreased excitatory neurotransmitters, aspartate, and glutamate, while the inhibitory neurotransmitter, serotonin, was increased. Branched-chain amino acids and glucose were increased by acute H2S exposure. Subchronic H2S exposure within OSHA guidelines surprisingly decreased serotonin concentration. In subchronic H2S exposure, glucose was decreased, while polyunsaturated fatty acids, inosine, and hypoxanthine were increased. Collectively, these results provide important mechanistic clues for acute and subchronic ambient H2S poisoning and show that H2S alters brainstem metabolome.
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Affiliation(s)
- Dong-Suk Kim
- Department of Molecular Biosciences, School of Veterinary Medicine, UC Davis, Davis, CA 95616, USA; (D.-S.K.); (C.M.S.M.); (C.G.)
| | - Cristina M. Santana Maldonado
- Department of Molecular Biosciences, School of Veterinary Medicine, UC Davis, Davis, CA 95616, USA; (D.-S.K.); (C.M.S.M.); (C.G.)
- MRI Global, Kansas City, MO 64110, USA
| | - Cecilia Giulivi
- Department of Molecular Biosciences, School of Veterinary Medicine, UC Davis, Davis, CA 95616, USA; (D.-S.K.); (C.M.S.M.); (C.G.)
| | - Wilson Kiiza Rumbeiha
- Department of Molecular Biosciences, School of Veterinary Medicine, UC Davis, Davis, CA 95616, USA; (D.-S.K.); (C.M.S.M.); (C.G.)
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Zhang Z, Wang B, Cao Y. Factors influencing on the formation of dimethyl disulfide and dimethyl trisulfide in model systems. Food Res Int 2023; 172:113200. [PMID: 37689945 DOI: 10.1016/j.foodres.2023.113200] [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: 01/04/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 09/11/2023]
Abstract
The generations of dimethyl disulfide (DMDS) and dimethyl trisulfide (DMTS) in a binary or ternary model system including lipids, free amino acids and Maillard reaction products (MRPs) were studied. Various factors affecting the formation of DMDS and DMTS indicated that cysteine (Cys) and Cys MRPs could effectively decrease not only the concentrations of methionine (Met), DMDS and DMTS, but also the pH level. Rapid drops in pH limited the formation of DMDS and DMTS during Met thermal degradation. Quantitative analyses of DMDS and DMTS at acidic aqueous solutions revealed that the mixtures of MRPs derived from Cys and xylose (Xyl) had the best inhibition effect on the formation of DMDS and DMTS. The low level of DMDS and DMTS and the increasing level of furfuryl methyl sulfide and 2-thiophenecarboxaldehyde during storage indicated that MRPs derived from Cys and Xyl could effectively not only decrease the concertation of DMDS and DMTS, but also promote the development of thiophene and sulfur substituted furan. Thus, this study implied that MRPs derived from Cys/Xyl could be applied as effective substances to control the formation of DMDS and DMTS and improve the production of volatile compounds with meat-like aroma.
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Affiliation(s)
- Zeyu Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Bei Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology & Business University (BTBU), Beijing 100048, China.
| | - Yanping Cao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), School of Food and Health, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology & Business University (BTBU), Beijing 100048, China.
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Munteanu C, Turnea MA, Rotariu M. Hydrogen Sulfide: An Emerging Regulator of Oxidative Stress and Cellular Homeostasis-A Comprehensive One-Year Review. Antioxidants (Basel) 2023; 12:1737. [PMID: 37760041 PMCID: PMC10526107 DOI: 10.3390/antiox12091737] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 08/27/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Hydrogen sulfide (H2S), traditionally recognized as a toxic gas, has emerged as a critical regulator in many biological processes, including oxidative stress and cellular homeostasis. This review presents an exhaustive overview of the current understanding of H2S and its multifaceted role in mammalian cellular functioning and oxidative stress management. We delve into the biological sources and function of H2S, mechanisms underlying oxidative stress and cellular homeostasis, and the intricate relationships between these processes. We explore evidence from recent experimental and clinical studies, unraveling the intricate biochemical and molecular mechanisms dictating H2S's roles in modulating oxidative stress responses and maintaining cellular homeostasis. The clinical implications and therapeutic potential of H2S in conditions characterized by oxidative stress dysregulation and disrupted homeostasis are discussed, highlighting the emerging significance of H2S in health and disease. Finally, this review underscores current challenges, controversies, and future directions in the field, emphasizing the need for further research to harness H2S's potential as a therapeutic agent for diseases associated with oxidative stress and homeostatic imbalance. Through this review, we aim to emphasize H2S's pivotal role in cellular function, encouraging further exploration into this burgeoning area of research.
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Affiliation(s)
- Constantin Munteanu
- Teaching Emergency Hospital “Bagdasar-Arseni” (TEHBA), 041915 Bucharest, Romania
- Faculty of Medical Bioengineering, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700454 Iași, Romania;
| | - Marius Alexandru Turnea
- Faculty of Medical Bioengineering, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700454 Iași, Romania;
| | - Mariana Rotariu
- Faculty of Medical Bioengineering, University of Medicine and Pharmacy “Grigore T. Popa” Iași, 700454 Iași, Romania;
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Asaoka S, Ishidu T, Nakamoto K. Effect of chemical composition of coal ash used to prepare granulated coal ash on the removal of hydrogen sulfide from water. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2023; 95:e10916. [PMID: 37533124 DOI: 10.1002/wer.10916] [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: 03/23/2023] [Revised: 07/24/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023]
Abstract
Granulated coal ash was prepared by mixing coal ash derived from a coal electric power plant and blast furnace cement, to remove hydrogen sulfide from aquatic environment. In this study, we investigate the effects of the composition of the coal ash used to prepare the granulated coal ash on its hydrogen sulfide removal performance. Manganese, magnesium, and calcium contents in the granulated coal ash were found to be the major factors in controlling the rate of hydrogen sulfide removal. The kinetics of hydrogen sulfide removal by the granulated coal ash were expressed as a first-order equation with a rate constant of 0.0081-0.080 h-1 . The rate constant for hydrogen sulfide removal obtained in this study correlated well with the manganese content in the granulated coal ash. The increasing surface pH attributed to the hydrolysis of calcium and magnesium on the surface of the granulated coal ash slightly increased the hydrogen sulfide removal rate. PRACTITIONER POINTS: Adsorbents for H2 S are prepared by coal ash from different coal blend and coal electric power generation processes. Adsorbents tested in this study could remove hydrogen sulfide effectively. Manganese oxide in the adsorbents enhanced the removal rate of hydrogen sulfide. Adsorbents tested in this study contribute to sustainable development goals in terms of coal fly ash recycling.
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Affiliation(s)
- Satoshi Asaoka
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashihiroshima, Japan
- Research Center for Inland Seas, Kobe University, Kobe, Japan
| | - Takamichi Ishidu
- Graduate School of Maritime Sciences, Kobe University, Kobe, Japan
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Czarnota J, Masłoń A, Pajura R. Wastewater Treatment Plants as a Source of Malodorous Substances Hazardous to Health, Including a Case Study from Poland. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5379. [PMID: 37047993 PMCID: PMC10093992 DOI: 10.3390/ijerph20075379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
Using Poland as an example, it was shown that 41.6% of the requests for intervention in 2016-2021 by Environmental Protection Inspections were related to odour nuisance. Further analysis of the statistical data confirmed that approximately 5.4% of wastewater treatment plants in the group of municipal facilities were subject to complaints. Detailed identification of the subject of odour nuisance at wastewater treatment plants identified hydrogen sulphide (H2S), ammonia (NH3) and volatile organic compounds (VOCs) as the most common malodorous substances within these facilities. Moreover, the concentrations of hydrogen sulphide and ammonia exceed the reference values for some substances in the air (0.02 mg/m3 for H2S and 0.4 mg/m3 for NH3). A thorough assessment of the properties of these substances made it clear that even in small concentrations they have a negative impact on the human body and the environment, and their degree of nuisance is described as high. In the two WWTPs analysed in Poland (WWTP 1 and WWTP 2), hydrogen sulphide concentrations were in the range of 0-41.86 mg/m3 (Long-Term Exposure Limit for H2S is 7.0 mg/m3), ammonia 0-1.43 mg/m3 and VOCs 0.60-134.79 ppm. The values recognised for H2S cause lacrimation, coughing, olfactory impairment, psychomotor agitation, and swelling of the cornea with photophobia. Recognition of the methods used in practice at WWTPs to reduce and control malodorous emissions indicates the possibility of protecting the environment and human health, but these solutions are ignored in most facilities due to the lack of requirements specified in legislation.
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Liu Q, Liu Y, Wan Q, Lu Q, Liu J, Ren Y, Tang J, Su Q, Luo Y. Label-Free, Reusable, Equipment-Free, and Visual Detection of Hydrogen Sulfide Using a Colorimetric and Fluorescent Dual-Mode Sensing Platform. Anal Chem 2023; 95:5920-5926. [PMID: 36989391 DOI: 10.1021/acs.analchem.2c05364] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
In this work, we have found for the first time that the fluorescence of rhodamine B (RhB) would be dramatically reduced after it bound to hemin/G-quadruplex and reacted with •OH. Based on this finding, we have designed a colorimetric and fluorescent dual-mode sensing platform for visual detection of hydrogen sulfide (H2S). The constructed sensor is based on the formation of dsDNA and the G-quadruplex structure by the cytosine-Ag+-cytosine mismatch, causing H2O2-mediated catalysis to oxidize ABTS or RhB to induce a colorimetric or fluorescent change. In the presence of H2S, the solution color for colorimetric and fluorescent assays would change from dark green to pink and from green (fluorescence off) to bright yellow (fluorescence on), respectively. This dual-mode assay showed high selectivity toward H2S over other interference materials with a low measurable detection limit value (below than 2.5 μM), and it has been successfully applied to H2S visual detection in real samples. Moreover, the dual-mode sensing strategy presented an excellent reutilization character both in colorimetric and fluorescent assays. This method was employed as a label-free, simple, fast, and equipment-free platform for H2S detection with high selectivity and reusability. This work realized naked-eye detection both in colorimetric and fluorescent analysis at a lower concentration of H2S, demonstrating a promising strategy for on-site visual detection of H2S.
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Affiliation(s)
- Qiao Liu
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Yue Liu
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Qing Wan
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Qinrui Lu
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Jun Liu
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Yonggang Ren
- Department of Basic Medical Sciences, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Jiancai Tang
- Department of Basic Medical Sciences, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Qiang Su
- Department of Pharmacy, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan 637000, P. R. China
- Nanchong Key Laboratory of Individualized Drug Therapy, Nanchong, Sichuan 637000, P. R. China
| | - Yingping Luo
- Department of Pharmacology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
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Kim DS, Pessah IN, Santana CM, Purnell BS, Li R, Buchanan GF, Rumbeiha WK. Investigations into hydrogen sulfide-induced suppression of neuronal activity in vivo and calcium dysregulation in vitro. Toxicol Sci 2023; 192:kfad022. [PMID: 36882182 PMCID: PMC10109532 DOI: 10.1093/toxsci/kfad022] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Acute exposure to high concentrations of hydrogen sulfide (H2S) leads to sudden death and, if survived, lingering neurological disorders. Clinical signs include seizures, loss of consciousness, and dyspnea. The proximate mechanisms underlying H2S-induced acute toxicity and death have not been clearly elucidated. We investigated electrocerebral, cardiac and respiratory activity during H2S exposure using electroencephalogram (EEG), electrocardiogram (EKG) and plethysmography. H2S suppressed electrocerebral activity and disrupted breathing. Cardiac activity was comparatively less affected. To test whether Ca2+ dysregulation contributes to H2S-induced EEG suppression, we developed an in vitro real-time rapid throughput assay measuring patterns of spontaneous synchronized Ca2+ oscillations in cultured primary cortical neuronal networks loaded with the indicator Fluo-4 using the fluorescent imaging plate reader (FLIPR-Tetra®). Sulfide >5 ppm dysregulated synchronous calcium oscillation (SCO) patterns in a dose-dependent manner. Inhibitors of NMDA and AMPA receptors magnified H2S-induced SCO suppression. Inhibitors of L-type voltage gated Ca2+ channels and transient receptor potential channels prevented H2S-induced SCO suppression. Inhibitors of T-type voltage gated Ca2+ channels, ryanodine receptors, and sodium channels had no measurable influence on H2S-induced SCO suppression. Exposures to > 5 ppm sulfide also suppressed neuronal electrical activity in primary cortical neurons measured by multi-electrode array (MEA), an effect alleviated by pretreatment with the nonselective transient receptor potential channel inhibitor, 2-APB. 2-APB also reduced primary cortical neuronal cell death from sulfide exposure. These results improve our understanding of the role of different Ca2+ channels in acute H2S-induced neurotoxicity and identify transient receptor potential channel modulators as novel structures with potential therapeutic benefits.
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Affiliation(s)
- Dong-Suk Kim
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, California 95616, USA
| | - Isaac N Pessah
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, California 95616, USA
| | - Cristina M Santana
- VDPAM, College of Veterinary Medicine, Iowa State University, Ames, Iowa 50011, USA
- MRIGlobal, Kansas City, Missouri 64110, USA
| | - Benton S Purnell
- Department of Neurology, Iowa Neuroscience Institute, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52246, USA
- Department of Nerosurgery, Robert Wood Johnson Medical School, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Rui Li
- Department of Neurology, Iowa Neuroscience Institute, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52246, USA
| | - Gordon F Buchanan
- Department of Neurology, Iowa Neuroscience Institute, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52246, USA
| | - Wilson K Rumbeiha
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, California 95616, USA
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Jiang K, Chen T, Sun J, Quan H, Zhou T. Pd/Pt-Bimetallic-Nanoparticle-Doped In 2O 3 Hollow Microspheres for Rapid and Sensitive H 2S Sensing at Low Temperature. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:668. [PMID: 36839036 PMCID: PMC9963627 DOI: 10.3390/nano13040668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
H2S is a poisonous gas that is widespread in nature and human activities. Its rapid and sensitive detection is essential to prevent it from damaging health. Herein, we report Pd- and Pt-bimetallic-nanoparticle-doped In2O3 hollow microspheres that are synthesized using solvothermal and in situ reduction methods for H2S detection. The structure of as-synthesized 1 at% Pd/Pt-In2O3 comprises porous hollow microspheres assembled from In2O3 nanosheets with Pd and Pt bimetallic nanoparticles loaded on its surface. The response of 1 at% Pd/Pt-In2O3 to 5 ppm H2S is 140 (70 times that of pure In2O3), and the response time is 3 s at a low temperature of 50 °C. In addition, it can detect trace H2S (as low as 50 ppb) and has superior selectivity and an excellent anti-interference ability. These outstanding gas-sensing performances of 1 at% Pd/Pt-In2O3 are attributed to the chemical sensitization of Pt, the electronic sensitization of Pd, and the synergistic effect between them. This work supplements the research of In2O3-based H2S sensors and proves that Pd- and Pt-bimetallic-doped In2O3 can be applied in the detection of H2S.
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Affiliation(s)
- Kaisheng Jiang
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tingting Chen
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianhai Sun
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China
| | - Hao Quan
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tianye Zhou
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Sekiguchi F, Koike N, Shimada Y, Sugimoto K, Masuda H, Nakamura T, Yamaguchi H, Tanabe G, Marumoto S, Kasanami Y, Tsubota M, Ohkubo T, Yoshida S, Kawabata A. A hydrolysate of poly-trans-[(2-carboxyethyl)germasesquioxane] (Ge-132) suppresses Ca v3.2-dependent pain by sequestering exogenous and endogenous sulfide. Redox Biol 2023; 59:102579. [PMID: 36563535 PMCID: PMC9800310 DOI: 10.1016/j.redox.2022.102579] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/05/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Poly-trans-[(2-carboxyethyl)germasesquioxane] (Ge-132), an organogermanium, is hydrolyzed to 3-(trihydroxygermyl)propanoic acid (THGP) in aqueous solutions, and reduces inflammation, pain and cancer, whereas the underlying mechanisms remain unknown. Sulfides including H2S, a gasotransmitter, generated from l-cysteine by some enzymes including cystathionine-γ-lyase (CSE), are pro-nociceptive, since they enhance Cav3.2 T-type Ca2+ channel activity expressed in the primary afferents, most probably by canceling the channel inhibition by Zn2+ linked via coordinate bonding to His191 of Cav3.2. Given that germanium is reactive to sulfur, we tested whether THGP would directly trap sulfide, and inhibit sulfide-induced enhancement of Cav3.2 activity and sulfide-dependent pain in mice. Using mass spectrometry and 1H NMR techniques, we demonstrated that THGP directly reacted with sulfides including Na2S and NaSH, and formed a sulfur-containing reaction product, which decreased in the presence of ZnCl2. In Cav3.2-transfected HEK293 cells, THGP inhibited the sulfide-induced enhancement of T-type Ca2+ channel-dependent membrane currents. In mice, THGP, administered systemically or locally, inhibited the mechanical allodynia caused by intraplantar Na2S. In the mice with cyclophosphamide-induced cystitis and cerulein-induced pancreatitis, which exhibited upregulation of CSE in the bladder and pancreas, respectively, systemic administration of THGP as well as a selective T-type Ca2+ channel inhibitor suppressed the cystitis-related and pancreatitis-related visceral pain. These data suggest that THGP traps sulfide and inhibits sulfide-induced enhancement of Cav3.2 activity, leading to suppression of Cav3.2-dependent pain caused by sulfide applied exogenously and generated endogenously.
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Affiliation(s)
- Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Nene Koike
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Yasuhiro Shimada
- Asai Germanium Research Institute Co., Ltd., Suzuranoka, Hakodate, Hokkaido, 042-0958, Japan
| | - Kaho Sugimoto
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Hiroshi Masuda
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Takashi Nakamura
- Asai Germanium Research Institute Co., Ltd., Suzuranoka, Hakodate, Hokkaido, 042-0958, Japan
| | - Hiroaki Yamaguchi
- Yamagata University Graduate School of Medicine, Iida-nishi 2-2-2, Yamagata, 990-9585, Japan; Department of Pharmacy, Yamagata University Hospital, Iida-nishi 2-2-2, Yamagata, 990-9585, Japan
| | - Genzoh Tanabe
- Laboratory of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Yoshihito Kasanami
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Tsuyako Ohkubo
- Division of Basic Medical Sciences and Fundamental Nursing, Faculty of Nursing, Fukuoka Nursing College, Fukuoka, 814-0193, Japan
| | - Shigeru Yoshida
- Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan.
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