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Zochio GP, Possomato-Vieira JS, Chimini JS, da Silva MLS, Dias-Junior CA. Effects of fast versus slow-releasing hydrogen sulfide donors in hypertension in pregnancy and fetoplacental growth restriction. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:1561-1568. [PMID: 31363805 DOI: 10.1007/s00210-019-01697-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 07/15/2019] [Indexed: 12/16/2022]
Abstract
Hydrogen sulfide (H2S) is a vasorelaxant gas with therapeutic potential in several diseases. However, effects of H2S donors in hypertensive pregnancy complicated by feto-placental growth restriction are unclear. Therefore, we aimed to examine and compare the effects of fast-releasing H2S donor (sodium hydrosulfide-NaHS) and slow-releasing H2S donor (GYY4137) in hypertension-in-pregnancy. Pregnant rats were distributed into four groups: normal pregnancy (Norm-Preg), hypertensive pregnancy (HTN-Preg), hypertensive pregnancy + NaHS (HTN-Preg + NaHS), and hypertensive pregnancy + GYY4137 (HTN-Preg + GYY). Systolic blood pressure, plasma H2S levels, fetal and placental weights, number of viable fetuses, litter size, and endothelium-dependent vasodilation were examined. Also, oxidative stress was assessed in placenta. We found that GYY4137 attenuated hypertension on gestational days 16 and 18, while NaHS presented antihypertensive effect only on gestational day 18. GYY4137, but not NaHS, increased plasma H2S levels. Greater fetal and placental weights were found with GYY4137 than NaHS treatment. Also, HTN-Preg + NaHS presented further reductions in placental weights when compared to HTN-Preg group. Number of viable fetuses and litter size presented no significant changes. GYY4137 reduced placental oxidative stress caused by hypertension, while greater increases in oxidative stress were found in HTN-Preg + NaHS than HTN-Preg group. Hypertensive pregnancy caused impaired endothelium-dependent vasodilation, while GYY4137 and NaHS treatments blunted endothelial dysfunction. Endothelium-dependent vasodilation was completely blocked by the nitric oxide synthase inhibitor. We conclude that slow-releasing H2S donor GYY4137 is advantageous compared with fast-releasing H2S-donor NaHS to attenuate hypertension-in-pregnancy and to protect against feto-placental growth restriction and oxidative stress.
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Affiliation(s)
- Gabriela Palma Zochio
- Department of Pharmacology, Biosciences Institute of Botucatu, Sao Paulo State University-UNESP, Distrito de Rubiao Junior, S/N,, Botucatu, SP, 18.618-689, Brazil
| | - Jose Sergio Possomato-Vieira
- Department of Pharmacology, Biosciences Institute of Botucatu, Sao Paulo State University-UNESP, Distrito de Rubiao Junior, S/N,, Botucatu, SP, 18.618-689, Brazil
| | - Jessica Sabbatine Chimini
- Department of Pharmacology, Biosciences Institute of Botucatu, Sao Paulo State University-UNESP, Distrito de Rubiao Junior, S/N,, Botucatu, SP, 18.618-689, Brazil
| | - Maria Luiza Santos da Silva
- Department of Pharmacology, Biosciences Institute of Botucatu, Sao Paulo State University-UNESP, Distrito de Rubiao Junior, S/N,, Botucatu, SP, 18.618-689, Brazil
| | - Carlos Alan Dias-Junior
- Department of Pharmacology, Biosciences Institute of Botucatu, Sao Paulo State University-UNESP, Distrito de Rubiao Junior, S/N,, Botucatu, SP, 18.618-689, Brazil.
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152
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Transcription factor YcjW controls the emergency H 2S production in E. coli. Nat Commun 2019; 10:2868. [PMID: 31253770 PMCID: PMC6599011 DOI: 10.1038/s41467-019-10785-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 06/03/2019] [Indexed: 12/18/2022] Open
Abstract
Prokaryotes and eukaryotes alike endogenously generate the gaseous molecule hydrogen sulfide (H2S). Bacterial H2S acts as a cytoprotectant against antibiotics-induced stress and promotes redox homeostasis. In E. coli, endogenous H2S production is primarily dependent on 3-mercaptopyruvate sulfurtransferase (3MST), encoded by mstA. Here, we show that cells lacking 3MST acquire a phenotypic suppressor mutation resulting in compensatory H2S production and tolerance to antibiotics and oxidative stress. Using whole genome sequencing, we identified a non-synonymous mutation within an uncharacterized LacI-type transcription factor, ycjW. We then mapped regulatory targets of YcjW and discovered it controls the expression of carbohydrate metabolic genes and thiosulfate sulfurtransferase PspE. Induction of pspE expression in the suppressor strain provides an alternative mechanism for H2S biosynthesis. Our results reveal a complex interaction between carbohydrate metabolism and H2S production in bacteria and the role, a hitherto uncharacterized transcription factor, YcjW, plays in linking the two. Hydrogen sulfide (H2S) production in Escherichia coli is controlled by the sulfurtransferase 3MST. Here, the authors describe an alternative mechanism for H2S biosynthesis via activation of the thiosulfate sulfurtransferase PspE, a process mediated by the transcription factor YcjW.
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153
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Rajendran S, Shen X, Glawe J, Kolluru GK, Kevil CG. Nitric Oxide and Hydrogen Sulfide Regulation of Ischemic Vascular Growth and Remodeling. Compr Physiol 2019; 9:1213-1247. [PMID: 31187898 DOI: 10.1002/cphy.c180026] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ischemic vascular remodeling occurs in response to stenosis or arterial occlusion leading to a change in blood flow and tissue perfusion. Altered blood flow elicits a cascade of molecular and cellular physiological responses leading to vascular remodeling of the macro- and micro-circulation. Although cellular mechanisms of vascular remodeling such as arteriogenesis and angiogenesis have been studied, therapeutic approaches in these areas have had limited success due to the complexity and heterogeneous constellation of molecular signaling events regulating these processes. Understanding central molecular players of vascular remodeling should lead to a deeper understanding of this response and aid in the development of novel therapeutic strategies. Hydrogen sulfide (H2 S) and nitric oxide (NO) are gaseous signaling molecules that are critically involved in regulating fundamental biochemical and molecular responses necessary for vascular growth and remodeling. This review examines how NO and H2 S regulate pathophysiological mechanisms of angiogenesis and arteriogenesis, along with important chemical and experimental considerations revealed thus far. The importance of NO and H2 S bioavailability, their synthesis enzymes and cofactors, and genetic variations associated with cardiovascular risk factors suggest that they serve as pivotal regulators of vascular remodeling responses. © 2019 American Physiological Society. Compr Physiol 9:1213-1247, 2019.
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Affiliation(s)
| | - Xinggui Shen
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - John Glawe
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - Gopi K Kolluru
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - Christopher G Kevil
- Departments of Pathology, LSU Health Sciences Center, Shreveport.,Departments of Cellular Biology and Anatomy, LSU Health Sciences Center, Shreveport.,Departments of Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport
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154
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Ditrói T, Nagy A, Martinelli D, Rosta A, Kožich V, Nagy P. Comprehensive analysis of how experimental parameters affect H 2S measurements by the monobromobimane method. Free Radic Biol Med 2019; 136:146-158. [PMID: 30970274 DOI: 10.1016/j.freeradbiomed.2019.04.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/28/2019] [Accepted: 04/02/2019] [Indexed: 11/24/2022]
Abstract
A rapidly increasing number of studies report on widespread biological functions for endogenous hydrogen sulfide. However, the use of multiple, chemically distinct analytical methods to measure free hydrogen sulfide levels in biological samples accumulate data that are not in agreement with each other. In this work a widely appreciated technique, the monobromobimane method, was thoroughly investigated with the overall aims i) to demonstrate how results obtained by different versions of the method should be interpreted and ii) to provide an easy protocol for the community in order to obtain reliable and comparable results. We demonstrate that none of the previously published versions of the method measure free sulfide concentrations in blood serum or plasma samples due to significant interferences with the biomolecule-bound sulfide pool. On the other hand, we stress the biological relevance of these measurements in cases in which they are carefully conducted. To aid future studies, we extensively investigated the entire procedure from sample withdrawal through handling and storing of injection-ready samples until the detection protocol in order to pinpoint all parameters that can affect the final readouts. Based on our rigorous analytical investigations a set of recommendations were compiled that are necessary to ensure reliable, reproducible and comparable results in the field and a detailed standardized protocol is provided.
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Affiliation(s)
- Tamás Ditrói
- National Institute of Oncology, Department of Molecular Immunology and Toxicology, Ráth György Utca 7-9, Budapest, Hungary
| | - Attila Nagy
- National Institute of Oncology, Department of Molecular Immunology and Toxicology, Ráth György Utca 7-9, Budapest, Hungary
| | - Diego Martinelli
- Division of Metabolism, Bambino Gesù Children's Hospital, IRCSS, Piazza S. Onofrio 4, Rome, I-00165, Italy
| | - András Rosta
- National Institute of Oncology, Department of Medical Oncology "A" and Hematology, Lymphoma Center, Ráth György Utca 7-9, Budapest, Hungary
| | - Viktor Kožich
- Department of Pediatrics and Adolescent Medicine, Charles University-First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Péter Nagy
- National Institute of Oncology, Department of Molecular Immunology and Toxicology, Ráth György Utca 7-9, Budapest, Hungary; Department of Medicine, Faculty of Medicine, University of Debrecen, 4012, Debrecen, Hungary.
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155
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Abstract
Dr. Hideo Kimura is recognized as a redox pioneer because he has published an article in the field of antioxidant and redox biology that has been cited >1000 times, and 29 articles that have been cited >100 times. Since the first description of hydrogen sulfide (H2S) as a toxic gas 300 years ago, most studies have been devoted to its toxicity. In 1996, Dr. Kimura demonstrated a physiological role of H2S as a mediator of cognitive function and cystathionine β-synthase as an H2S-producing enzyme. In the following year, he showed H2S as a vascular smooth muscle relaxant in synergy with nitric oxide and its production by cystathionine γ-lyase in vasculature. Subsequently he reported the cytoprotective effect of H2S on neurons against oxidative stress. Since then, studies on H2S have unveiled numerous physiological roles such as the regulation of inflammation, cell growth, oxygen sensing, and senescence. He also discovered polysulfides (H2Sn), which have a higher number of sulfur atoms than H2S and are one of the active forms of H2S, as potent signaling molecules produced by 3-mercaptopyruvate sulfurtransferase. H2Sn regulate ion channels and transcription factors to upregulate antioxidant genes, tumor suppressors, and protein kinases to, in turn, regulate blood pressure. These findings led to the re-evaluation of other persulfurated molecules such as cysteine persulfide and glutathione persulfide. Dr. Kimura is a pioneer of studies on H2S and H2Sn as signaling molecules. It is fortunate to come across a secret of nature and pick it up. -Prof. Hideo Kimura.
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Affiliation(s)
- David Lefer
- CV Center of Excellence, Louisiana State University Health Sciences Center , New Orleans, Louisiana
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156
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Han Y, Shang Q, Yao J, Ji Y. Hydrogen sulfide: a gaseous signaling molecule modulates tissue homeostasis: implications in ophthalmic diseases. Cell Death Dis 2019; 10:293. [PMID: 30926772 PMCID: PMC6441042 DOI: 10.1038/s41419-019-1525-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 02/12/2019] [Accepted: 03/11/2019] [Indexed: 12/14/2022]
Abstract
Hydrogen sulfide (H2S) serves as a gasotransmitter in the regulation of organ development and maintenance of homeostasis in tissues. Its abnormal levels are associated with multiple human diseases, such as neurodegenerative disease, myocardial injury, and ophthalmic diseases. Excessive exposure to H2S could lead to cellular toxicity, orchestrate pathological process, and increase the risk of various diseases. Interestingly, under physiological status, H2S plays a critical role in maintaining cellular physiology and limiting damages to tissues. In mammalian species, the generation of H2S is catalyzed by cystathionine beta-synthase (CBS), cystathionine gamma-lyase (CSE), 3-mercapto-methylthio pyruvate aminotransferase (3MST) and cysteine aminotransferase (CAT). These enzymes are found inside the mammalian eyeballs at different locations. Their aberrant expression and the accumulation of substrates and intermediates can change the level of H2S by orders of magnitude, causing abnormal structures or functions in the eyes. Detailed investigations have demonstrated that H2S donors' administration could regulate intraocular pressure, protect retinal cells, inhibit oxidative stress and alleviate inflammation by modulating the function of intra or extracellular proteins in ocular tissues. Thus, several slow-releasing H2S donors have been shown to be promising drugs for treating multiple diseases. In this review, we discuss the biological function of H2S metabolism and its application in ophthalmic diseases.
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Affiliation(s)
- Yuyi Han
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, China
| | - Qianwen Shang
- Institutes for Translational Medicine, Soochow University Medical College, Suzhou, China
| | - Jin Yao
- The Affiliated Eye Hospital of Nanjing Medical University, Nanjing, China.
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
| | - Yong Ji
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, China.
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157
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Fortunato S, Lenzi C, Granchi C, Citi V, Martelli A, Calderone V, Di Pietro S, Signore G, Di Bussolo V, Minutolo F. First Examples of H 2S-Releasing Glycoconjugates: Stereoselective Synthesis and Anticancer Activities. Bioconjug Chem 2019; 30:614-620. [PMID: 30609890 DOI: 10.1021/acs.bioconjchem.8b00808] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
H2S donors are currently emerging as promising therapeutic agents in a wide variety of pathologies, including tumors. Cancer cells are characterized by an enhanced uptake of sugars, such as glucose. Therefore, novel glycoconjugated H2S donors were synthesized so that high concentrations of H2S can be selectively achieved therein. Dithiolethione portions or isothiocyanate portions were selected for their well-known H2S-releasing properties in the presence of biological substrates. A synthetic procedure employing trichloroacetimidate glycosyl donors was applied to produce, in a stereoselective fashion, C1-glycoconjugates, whereas C6-glycoconjugates were obtained by a Mitsunobu-based transformation. The resulting molecules were then tested for their anticancer effects on human pancreas adenocarcinoma ascites metastasis cell line AsPC-1. The most potent inhibitors of cell viability (6aβ and 7b) proved to release H2S inside the AsPC-1 cells and to alter the basal cell cycle.
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Affiliation(s)
- Serena Fortunato
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Chiara Lenzi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Carlotta Granchi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Valentina Citi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Alma Martelli
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Vincenzo Calderone
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Sebastiano Di Pietro
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Giovanni Signore
- NEST, Scuola Normale Superiore and NANO-CNR , Piazza San Silvestro 12 , 56127 Pisa , Italy
| | - Valeria Di Bussolo
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Via G. Moruzzi 13 , 56124 Pisa , Italy
| | - Filippo Minutolo
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
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158
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Intake of Red and Processed Meat, Use of Non-Steroid Anti-Inflammatory Drugs, Genetic Variants and Risk of Colorectal Cancer: A Prospective Study of the Danish "Diet, Cancer and Health" Cohort. Int J Mol Sci 2019; 20:ijms20051121. [PMID: 30841568 PMCID: PMC6429260 DOI: 10.3390/ijms20051121] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 02/25/2019] [Accepted: 02/27/2019] [Indexed: 02/06/2023] Open
Abstract
Red and processed meat have been associated with increased risk of colorectal cancer (CRC), whereas long-term use of non-steroid anti-inflammatory drugs (NSAIDs) may reduce the risk. The aim was to investigate potential interactions between meat intake, NSAID use, and gene variants in fatty acid metabolism and NSAID pathways in relation to the risk of CRC. A nested case-cohort study of 1038 CRC cases and 1857 randomly selected participants from the Danish prospective “Diet, Cancer and Health” study encompassing 57,053 persons was performed using the Cox proportional hazard model. Gene variants in SLC25A20, PRKAB1, LPCAT1, PLA2G4A, ALOX5, PTGER3, TP53, CCAT2, TCF7L2, and BCL2 were investigated. CCAT2 rs6983267 was associated with the risk of CRC per se (p < 0.01). Statistically significant interactions were found between intake of red and processed meat and CCAT2 rs6983267, TP53 rs1042522, LPCAT1 rs7737692, SLC25A20 rs7623023 (pinteraction = 0.04, 0.04, 0.02, 0.03, respectively), and the use of NSAID and alcohol intake and TP53 rs1042522 (pinteraction = 0.04, 0.04, respectively) in relation to the risk of CRC. No other consistent associations or interactions were found. This study replicated an association of CCAT2 rs6983267 with CRC and an interaction between TP53 rs1042522 and NSAID in relation to CRC. Interactions between genetic variants in fatty acid metabolism and NSAID pathways and the intake of red and processed meat were found. Our results suggest that meat intake and NSAID use affect the same carcinogenic mechanisms. All new findings should be sought replicated in independent prospective studies. Future studies on the cancer-protective effects of aspirin/NSAID should include gene and meat assessments.
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159
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H 2S, a Bacterial Defense Mechanism against the Host Immune Response. Infect Immun 2018; 87:IAI.00272-18. [PMID: 30323021 DOI: 10.1128/iai.00272-18] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 10/04/2018] [Indexed: 12/21/2022] Open
Abstract
The biological mediator hydrogen sulfide (H2S) is produced by bacteria and has been shown to be cytoprotective against oxidative stress and to increase the sensitivity of various bacteria to a range of antibiotic drugs. Here we evaluated whether bacterial H2S provides resistance against the immune response, using two bacterial species that are common sources of nosocomial infections, Escherichia coli and Staphylococcus aureus Elevations in H2S levels increased the resistance of both species to immune-mediated killing. Clearances of infections with wild-type and genetically H2S-deficient E. coli and S. aureus were compared in vitro and in mouse models of abdominal sepsis and burn wound infection. Also, inhibitors of H2S-producing enzymes were used to assess bacterial killing by leukocytes. We found that inhibition of bacterial H2S production can increase the susceptibility of both bacterial species to rapid killing by immune cells and can improve bacterial clearance after severe burn, an injury that increases susceptibility to opportunistic infections. These findings support the role of H2S as a bacterial defense mechanism against the host response and implicate bacterial H2S inhibition as a potential therapeutic intervention in the prevention or treatment of infections.
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160
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Hu X, Chi Q, Wang D, Chi X, Teng X, Li S. Hydrogen sulfide inhalation-induced immune damage is involved in oxidative stress, inflammation, apoptosis and the Th1/Th2 imbalance in broiler bursa of Fabricius. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 164:201-209. [PMID: 30118953 DOI: 10.1016/j.ecoenv.2018.08.029] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/05/2018] [Accepted: 08/08/2018] [Indexed: 06/08/2023]
Abstract
Hydrogen sulfide (H2S) is widely accepted to be a signaling molecule that exhibits some potentially beneficial therapeutic effects at physiological concentrations. At elevated levels, H2S is highly toxic and has a negative effect on human health and animal welfare. Studies have shown that H2S exposure induces an immune function in mice, but there are few studies of the effect of continuous H2S exposure on immune organs in poultry. In this study, one-day-old broilers were selected and exposed to 4 or 20 ppm of H2S gas for 14, 28 and 42 days of age. After exposure, the bursa of Fabricius (BF) was harvested. The results showed that continuous H2S exposure reduced the body weight, abdominal fat percentage, and antibody titer in broilers. H2S exposure also decreased mRNA expression of IgA, IgM and IgG in the broiler BF. A histological study revealed obvious nuclear debris, and a few vacuoles in the BF, and an ultrastructural study revealed mitochondrial and nuclear damage to BF cells after H2S exposure for 42 d. Terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay suggested H2S exposure remarkably increased the number of TUNEL positive nuclei and significantly increased apoptotic index. The expression of apoptotic genes also confirmed that H2S inhalation damaged the broiler BF. Increased cytokines and reduced antioxidant responses were detected in the BF after exposure to H2S. Cytokines promoted inflammation and caused a Th1/Th2 imbalance. We suggest that continuous H2S intoxication triggers oxidative stress, inflammation, apoptosis and a Th1/Th2 imbalance in the BF, leading to immune injury in broilers.
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Affiliation(s)
- Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Qianru Chi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Dongxu Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xin Chi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China.
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
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161
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Augsburger F, Szabo C. Potential role of the 3-mercaptopyruvate sulfurtransferase (3-MST)-hydrogen sulfide (H 2S) pathway in cancer cells. Pharmacol Res 2018; 154:104083. [PMID: 30500457 DOI: 10.1016/j.phrs.2018.11.034] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 12/20/2022]
Abstract
Hydrogen sulfide (H2S), produced by various endogenous enzyme systems, serves various biological regulatory roles in mammalian cells in health and disease. Over recent years, a new concept emerged in the field of H2S biology, showing that various cancer cells upregulate their endogenous H2S production, and utilize this mediator in autocrine and paracrine manner to stimulate proliferation, bioenergetics and tumor angiogenesis. Initial work identified cystathionine-beta-synthase (CBS) in many tumor cells as the key source of H2S. In other cells, cystathionine-gamma-lyase (CSE) has been shown to play a pathogenetic role. However, until recently, less attention has been paid to the third enzymatic source of H2S, 3-mercaptopyruvate sulfurtransferase (3-MST), even though several of its biological and biochemical features - e.g. its partial mitochondrial localization, its ability to produce polysulfides, which, in turn, can induce functionally relevant posttranslational protein modifications - makes it a potential candidate. Indeed, several lines of recent data indicate the potential role of the 3-MST system in cancer biology. In many cancers (e.g. colon adenocarcinoma, lung adenocarcinoma, urothelial cell carcinoma, various forms of oral carcinomas), 3-MST is upregulated compared to the surrounding normal tissue. According to in vitro studies, 3-MST upregulation is especially prominent in cancer cells that recover from oxidative damage and/or develop a multidrug-resistant phenotype. Emerging data with newly discovered pharmacological inhibitors of 3-MST, as well as data using 3-MST silencing approaches suggest that the 3-MST/H2S system plays a role in maintaining cancer cell proliferation; it may also regulate bioenergetic and cell-signaling functions. Many questions remain open in the field of 3-MST/cancer biology; the last section of current article highlights these open questions and lays out potential experimental strategies to address them.
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Affiliation(s)
- Fiona Augsburger
- Chair of Pharmacology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Csaba Szabo
- Chair of Pharmacology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland.
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162
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Kožich V, Ditrói T, Sokolová J, Křížková M, Krijt J, Ješina P, Nagy P. Metabolism of sulfur compounds in homocystinurias. Br J Pharmacol 2018; 176:594-606. [PMID: 30341787 DOI: 10.1111/bph.14523] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 08/21/2018] [Accepted: 09/26/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Homocystinurias are rare genetic defects characterized by altered fluxes of sulfur compounds including homocysteine and cysteine. We explored whether the severely perturbed sulfur amino acid metabolism in patients with homocystinurias affects the metabolism of hydrogen sulfide. EXPERIMENTAL APPROACH We studied 10 treated patients with a block in the conversion of homocysteine to cysteine due to cystathionine β-synthase deficiency (CBSD) and six treated patients with remethylation defects (RMD) and an enhanced flux of sulfur metabolites via transsulfuration. Control groups for CBSD and RMD patients consisted of 22 patients with phenylketonuria on a low-protein diet and of 12 healthy controls respectively. Plasma and urine concentrations of selected sulfur compounds were analysed by HPLC and LC-MS/MS. KEY RESULTS Patients with CBSD exhibited plasma concentrations of monobromobimane-detected sulfide similar to appropriate controls. Urinary homolanthionine and thiosulfate in CBSD were increased significantly 1.9 and 3 times suggesting higher hydrogen sulfide synthesis by γ-cystathionase and detoxification respectively. Surprisingly, patients with RMD had significantly lower plasma sulfide levels (53 and 64% of controls) with lower sulfite concentrations, and higher taurine and thiosulfate levels suggesting enhanced cysteine oxidation and hydrogen sulfide catabolism respectively. CONCLUSION AND IMPLICATIONS The results from this study suggest that severe inherited defects in sulfur amino acid metabolism may be accompanied by only moderately perturbed hydrogen sulfide metabolism and lends support to the hypothesis that enzymes in the transsulfuration pathway may not be the major contributors to the endogenous hydrogen sulfide pool. LINKED ARTICLES This article is part of a themed section on Chemical Biology of Reactive Sulfur Species. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.4/issuetoc.
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Affiliation(s)
- Viktor Kožich
- Department of Paediatrics and Adolescent Medicine, Charles University - First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Tamás Ditrói
- Department of Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
| | - Jitka Sokolová
- Department of Paediatrics and Adolescent Medicine, Charles University - First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Michaela Křížková
- Department of Paediatrics and Adolescent Medicine, Charles University - First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Jakub Krijt
- Department of Paediatrics and Adolescent Medicine, Charles University - First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Pavel Ješina
- Department of Paediatrics and Adolescent Medicine, Charles University - First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Peter Nagy
- Department of Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
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Sulfide Protects Staphylococcus aureus from Aminoglycoside Antibiotics but Cannot Be Regarded as a General Defense Mechanism against Antibiotics. Antimicrob Agents Chemother 2018; 62:AAC.00602-18. [PMID: 30061290 DOI: 10.1128/aac.00602-18] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/22/2018] [Indexed: 11/20/2022] Open
Abstract
Sulfide production has been proposed to be a universal defense mechanism against antibiotics in bacteria (K. Shatalin, E. Shatalina, A. Mironov, and E. Nudler, Science 334:986-990, 2011, doi:10.1126/science.1209855). To gain insight into the mechanism underlying sulfide protection, we systematically and comparatively addressed the interference of sulfide with antibiotic activity against Staphylococcus aureus, as a model organism. The impact of sulfide and sulfide precursors on the antibiotic susceptibility of S. aureus to the most important classes of antibiotics was analyzed using modified disk diffusion assays, killing kinetic assays, and drug uptake studies. In addition, sulfide production and the impact of exogenously added sulfide on the physiology of S. aureus were analyzed. Sulfide protection was found to be limited to aminoglycoside antibiotics, which are known to be taken up by bacterial cells in an energy-dependent process. The protective mechanism was found to rely on an inhibitory effect of sulfide on the bacterial respiratory chain, leading to reduced drug uptake. S. aureus was found to be incapable of producing substantial amounts of sulfide. We propose that bacterial sulfide production should not be regarded as a general defense mechanism against antibiotics, since (i) it is limited to aminoglycosides and (ii) production levels vary considerably among species and, as for S. aureus, may be too low for protection.
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164
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Possomato-Vieira JS, Chimini JS, da Silva MLS, Dias-Junior CA. Increases in placental nitric oxide, but not nitric oxide-mediated relaxation, underlie the improvement in placental efficiency and antihypertensive effects of hydrogen sulphide donor in hypertensive pregnancy. Clin Exp Pharmacol Physiol 2018; 45:1118-1127. [PMID: 29927503 DOI: 10.1111/1440-1681.13000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 06/07/2018] [Accepted: 06/20/2018] [Indexed: 12/17/2022]
Abstract
Dysregulation of hydrogen sulphide (H2 S) producing enzymes has been related to hypertensive pregnancy, and H2 S donor, sodium hydrosulphide (NaHS) exerts antihypertensive effects, modulates angiogenic factors production and acts as an antioxidant. Moreover, reduction in nitric oxide (NO) bioavailability is related to hypertensive pregnancy and H2 S may interact with NO, modulating its production. We aimed to investigate the NaHS effects in hypertension-in-pregnancy and also in feto-placental parameters. Female Wistar rats (200-250 g) were mated and desoxycorticosterone acetate injections followed by replacement of water by 0.9% saline solution were used to induce hypertensive pregnancy. Rats were divided into four groups: normal pregnant (Norm-Preg), pregnant + NaHS (Preg+NaHS), hypertensive pregnant (HTN-Preg) and HTN-Preg+NaHS. Systolic blood pressure was increased in HTN-Preg and this increase was blunted in HTN-Preg+NaHS. Fetal and placental weights were decreased in HTN-Preg animals, while fetal growth restriction was improved in HTN-Preg+NaHS. Placental weight was lower in HTN-Preg+NaHS than in HTN-Preg; however, placental efficiency was re-established in HTN-Preg+NaHS rats. We observed that a partial contribution of placental NO, but not changes in anti-angiogenic factors may mediate the increases in placental efficiency in HTN-Preg+NaHS. HTN-Preg presented thoracic aorta hyperreactivity to phenylephrine while NaHS treatment blunted this hyperreactivity, which seems not to be related to NO-mediated relaxation induced by acetylcholine. Therefore, changes in vascular responsiveness promoted by NaHS treatment may underlie the beneficial effects in systolic blood pressure and feto-placental parameters in our study.
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Affiliation(s)
- Jose S Possomato-Vieira
- Department of Pharmacology, Biosciences Institute of Botucatu, São Paulo State University - UNESP, Botucatu, Sao Paulo, Brazil
| | - Jessica S Chimini
- Department of Pharmacology, Biosciences Institute of Botucatu, São Paulo State University - UNESP, Botucatu, Sao Paulo, Brazil
| | - Maria L S da Silva
- Department of Pharmacology, Biosciences Institute of Botucatu, São Paulo State University - UNESP, Botucatu, Sao Paulo, Brazil
| | - Carlos A Dias-Junior
- Department of Pharmacology, Biosciences Institute of Botucatu, São Paulo State University - UNESP, Botucatu, Sao Paulo, Brazil
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165
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Barata-Vallejo S, Ferreri C, Golding BT, Chatgilialoglu C. Hydrogen Sulfide: A Reagent for pH-Driven Bioinspired 1,2-Diol Mono-deoxygenation and Carbonyl Reduction in Water. Org Lett 2018; 20:4290-4294. [DOI: 10.1021/acs.orglett.8b01713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Carla Ferreri
- ISOF, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Bernard T. Golding
- School of Natural & Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
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166
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Pal VK, Bandyopadhyay P, Singh A. Hydrogen sulfide in physiology and pathogenesis of bacteria and viruses. IUBMB Life 2018; 70:393-410. [PMID: 29601123 PMCID: PMC6029659 DOI: 10.1002/iub.1740] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/14/2018] [Accepted: 03/02/2018] [Indexed: 12/18/2022]
Abstract
An increasing number of studies have established hydrogen sulfide (H2S) gas as a major cytoprotectant and redox modulator. Following its discovery, H2S has been found to have pleiotropic effects on physiology and human health. H2S acts as a gasotransmitter and exerts its influence on gastrointestinal, neuronal, cardiovascular, respiratory, renal, and hepatic systems. Recent discoveries have clearly indicated the importance of H2S in regulating vasorelaxation, angiogenesis, apoptosis, ageing, and metabolism. Contrary to studies in higher organisms, the role of H2S in the pathophysiology of infectious agents such as bacteria and viruses has been less studied. Bacterial and viral infections are often accompanied by changes in the redox physiology of both the host and the pathogen. Emerging studies indicate that bacterial-derived H2S constitutes a defense system against antibiotics and oxidative stress. The H2S signaling pathway also seems to interfere with redox-based events affected on infection with viruses. This review aims to summarize recent advances on the emerging role of H2S gas in the bacterial physiology and viral infections. Such studies have opened up new research avenues exploiting H2S as a potential therapeutic intervention.
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Affiliation(s)
- Virender Kumar Pal
- Department of Microbiology and Cell Biology, Centre for Infectious Disease Research, Indian Institute of Science (IISc), Bangalore, India
| | - Parijat Bandyopadhyay
- Department of Microbiology and Cell Biology, Centre for Infectious Disease Research, Indian Institute of Science (IISc), Bangalore, India
| | - Amit Singh
- Department of Microbiology and Cell Biology, Centre for Infectious Disease Research, Indian Institute of Science (IISc), Bangalore, India
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167
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Kashfi K. The dichotomous role of H 2S in cancer cell biology? Déjà vu all over again. Biochem Pharmacol 2018; 149:205-223. [PMID: 29397935 PMCID: PMC5866221 DOI: 10.1016/j.bcp.2018.01.042] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/17/2018] [Indexed: 02/09/2023]
Abstract
Nitric oxide (NO) a gaseous free radical is one of the ten smallest molecules found in nature, while hydrogen sulfide (H2S) is a gas that bears the pungent smell of rotten eggs. Both are toxic yet they are gasotransmitters of physiological relevance. There appears to be an uncanny resemblance between the general actions of these two gasotransmitters in health and disease. The role of NO and H2S in cancer has been quite perplexing, as both tumor promotion and inflammatory activities as well as anti-tumor and antiinflammatory properties have been described. These paradoxes have been explained for both gasotransmitters in terms of each having a dual or biphasic effect that is dependent on the local flux of each gas. In this review/commentary, I have discussed the major roles of NO and H2S in carcinogenesis, evaluating their dual nature, focusing on the enzymes that contribute to this paradox and evaluate the pros and cons of inhibiting or inducing each of these enzymes.
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Affiliation(s)
- Khosrow Kashfi
- Department of Molecular, Cellular and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, NY, USA.
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168
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Sutton TR, Minnion M, Barbarino F, Koster G, Fernandez BO, Cumpstey AF, Wischmann P, Madhani M, Frenneaux MP, Postle AD, Cortese-Krott MM, Feelisch M. A robust and versatile mass spectrometry platform for comprehensive assessment of the thiol redox metabolome. Redox Biol 2018; 16:359-380. [PMID: 29627744 PMCID: PMC5953223 DOI: 10.1016/j.redox.2018.02.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/25/2018] [Accepted: 02/13/2018] [Indexed: 01/02/2023] Open
Abstract
Several diseases are associated with perturbations in redox signaling and aberrant hydrogen sulfide metabolism, and numerous analytical methods exist for the measurement of the sulfur-containing species affected. However, uncertainty remains about their concentrations and speciation in cells/biofluids, perhaps in part due to differences in sample processing and detection principles. Using ultrahigh-performance liquid chromatography in combination with electrospray-ionization tandem mass spectrometry we here outline a specific and sensitive platform for the simultaneous measurement of 12 analytes, including total and free thiols, their disulfides and sulfide in complex biological matrices such as blood, saliva and urine. Total assay run time is < 10 min, enabling high-throughput analysis. Enhanced sensitivity and avoidance of artifactual thiol oxidation is achieved by taking advantage of the rapid reaction of sulfhydryl groups with N-ethylmaleimide. We optimized the analytical procedure for detection and separation conditions, linearity and precision including three stable isotope labelled standards. Its versatility for future more comprehensive coverage of the thiol redox metabolome was demonstrated by implementing additional analytes such as methanethiol, N-acetylcysteine, and coenzyme A. Apparent plasma sulfide concentrations were found to vary substantially with sample pretreatment and nature of the alkylating agent. In addition to protein binding in the form of mixed disulfides (S-thiolation) a significant fraction of aminothiols and sulfide appears to be also non-covalently associated with proteins. Methodological accuracy was tested by comparing the plasma redox status of 10 healthy human volunteers to a well-established protocol optimized for reduced/oxidized glutathione. In a proof-of-principle study a deeper analysis of the thiol redox metabolome including free reduced/oxidized as well as bound thiols and sulfide was performed. Additional determination of acid-labile sulfide/thiols was demonstrated in human blood cells, urine and saliva. Using this simplified mass spectrometry-based workflow the thiol redox metabolome can be determined in samples from clinical and translational studies, providing a novel prognostic/diagnostic platform for patient stratification, drug monitoring, and identification of new therapeutic approaches in redox diseases.
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Affiliation(s)
- T R Sutton
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - M Minnion
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - F Barbarino
- Cardiovascular Research Laboratory, Division of Cardiology, Pulmonology & Vascular Medicine, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - G Koster
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - B O Fernandez
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - A F Cumpstey
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - P Wischmann
- Cardiovascular Research Laboratory, Division of Cardiology, Pulmonology & Vascular Medicine, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - M Madhani
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
| | - M P Frenneaux
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - A D Postle
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - M M Cortese-Krott
- Cardiovascular Research Laboratory, Division of Cardiology, Pulmonology & Vascular Medicine, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - M Feelisch
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK.
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169
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Szabo C, Papapetropoulos A. International Union of Basic and Clinical Pharmacology. CII: Pharmacological Modulation of H 2S Levels: H 2S Donors and H 2S Biosynthesis Inhibitors. Pharmacol Rev 2017; 69:497-564. [PMID: 28978633 PMCID: PMC5629631 DOI: 10.1124/pr.117.014050] [Citation(s) in RCA: 278] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Over the last decade, hydrogen sulfide (H2S) has emerged as an important endogenous gasotransmitter in mammalian cells and tissues. Similar to the previously characterized gasotransmitters nitric oxide and carbon monoxide, H2S is produced by various enzymatic reactions and regulates a host of physiologic and pathophysiological processes in various cells and tissues. H2S levels are decreased in a number of conditions (e.g., diabetes mellitus, ischemia, and aging) and are increased in other states (e.g., inflammation, critical illness, and cancer). Over the last decades, multiple approaches have been identified for the therapeutic exploitation of H2S, either based on H2S donation or inhibition of H2S biosynthesis. H2S donation can be achieved through the inhalation of H2S gas and/or the parenteral or enteral administration of so-called fast-releasing H2S donors (salts of H2S such as NaHS and Na2S) or slow-releasing H2S donors (GYY4137 being the prototypical compound used in hundreds of studies in vitro and in vivo). Recent work also identifies various donors with regulated H2S release profiles, including oxidant-triggered donors, pH-dependent donors, esterase-activated donors, and organelle-targeted (e.g., mitochondrial) compounds. There are also approaches where existing, clinically approved drugs of various classes (e.g., nonsteroidal anti-inflammatories) are coupled with H2S-donating groups (the most advanced compound in clinical trials is ATB-346, an H2S-donating derivative of the non-steroidal anti-inflammatory compound naproxen). For pharmacological inhibition of H2S synthesis, there are now several small molecule compounds targeting each of the three H2S-producing enzymes cystathionine-β-synthase (CBS), cystathionine-γ-lyase, and 3-mercaptopyruvate sulfurtransferase. Although many of these compounds have their limitations (potency, selectivity), these molecules, especially in combination with genetic approaches, can be instrumental for the delineation of the biologic processes involving endogenous H2S production. Moreover, some of these compounds (e.g., cell-permeable prodrugs of the CBS inhibitor aminooxyacetate, or benserazide, a potentially repurposable CBS inhibitor) may serve as starting points for future clinical translation. The present article overviews the currently known H2S donors and H2S biosynthesis inhibitors, delineates their mode of action, and offers examples for their biologic effects and potential therapeutic utility.
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Affiliation(s)
- Csaba Szabo
- Department of Anesthesiology, The University of Texas Medical Branch, Galveston, Texas (C.S.); Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Zografou, Greece (A.P.); and Clinical, Experimental Surgery and Translational Research Center, Biomedical Research Foundation of the Academy of Athens, Athens, Greece (A.P.)
| | - Andreas Papapetropoulos
- Department of Anesthesiology, The University of Texas Medical Branch, Galveston, Texas (C.S.); Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Zografou, Greece (A.P.); and Clinical, Experimental Surgery and Translational Research Center, Biomedical Research Foundation of the Academy of Athens, Athens, Greece (A.P.)
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