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Martínez-Costa OH, Rodrigues-Miranda L, Clemente SM, Parola AJ, Basilio N, Samhan-Arias AK. The Use of Flavylium Salts as Dynamic Inhibitor Moieties for Human C b5R. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010123. [PMID: 36615312 PMCID: PMC9822168 DOI: 10.3390/molecules28010123] [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: 11/02/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022]
Abstract
Cytochrome b5 reductase (Cb5R) is a flavoprotein that participates in the reduction of multiple biological redox partners. Co-localization of this protein with nitric oxide sources has been observed in neurons. In addition, the generation of superoxide anion radical by Cb5R has been observed. A search for specific inhibitors of Cb5R to understand the role of this protein in these new functions has been initiated. Previous studies have shown the ability of different flavonoids to inhibit Cb5R. Anthocyanins are a subgroup of flavonoids responsible for most red and blue colors found in flowers and fruits. Although usually represented by the flavylium cation form, these species are only stable at rather acidic pH values (pH ≤ 1). At higher pH values, the flavylium cation is involved in a dynamic reaction network comprising different neutral species with the potential ability to inhibit the activities of Cb5R. This study aims to provide insights into the molecular mechanism of interaction between flavonoids and Cb5R using flavylium salts as dynamic inhibitors. The outcome of this study might lead to the design of improved specific enzyme inhibitors in the future.
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Affiliation(s)
- Oscar H. Martínez-Costa
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), C/Arturo Duperier 4, 28029-Madrid, Spain
- Instituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC-UAM), C/Arturo Duperier 4, 28029-Madrid, Spain
| | - Laura Rodrigues-Miranda
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), C/Arturo Duperier 4, 28029-Madrid, Spain
| | - Sofia M. Clemente
- Laboratório Associado Para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - António Jorge Parola
- Laboratório Associado Para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Nuno Basilio
- Laboratório Associado Para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
- Correspondence: (N.B.); (A.K.S.-A.)
| | - Alejandro K. Samhan-Arias
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), C/Arturo Duperier 4, 28029-Madrid, Spain
- Instituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC-UAM), C/Arturo Duperier 4, 28029-Madrid, Spain
- Laboratório Associado Para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
- Correspondence: (N.B.); (A.K.S.-A.)
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Cirino G, Szabo C, Papapetropoulos A. Physiological roles of hydrogen sulfide in mammalian cells, tissues and organs. Physiol Rev 2022; 103:31-276. [DOI: 10.1152/physrev.00028.2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
H2S belongs to the class of molecules known as gasotransmitters, which also includes nitric oxide (NO) and carbon monoxide (CO). Three enzymes are recognized as endogenous sources of H2S in various cells and tissues: cystathionine g-lyase (CSE), cystathionine β-synthase (CBS) and 3-mercaptopyruvate sulfurtransferase (3-MST). The current article reviews the regulation of these enzymes as well as the pathways of their enzymatic and non-enzymatic degradation and elimination. The multiple interactions of H2S with other labile endogenous molecules (e.g. NO) and reactive oxygen species are also outlined. The various biological targets and signaling pathways are discussed, with special reference to H2S and oxidative posttranscriptional modification of proteins, the effect of H2S on channels and intracellular second messenger pathways, the regulation of gene transcription and translation and the regulation of cellular bioenergetics and metabolism. The pharmacological and molecular tools currently available to study H2S physiology are also reviewed, including their utility and limitations. In subsequent sections, the role of H2S in the regulation of various physiological and cellular functions is reviewed. The physiological role of H2S in various cell types and organ systems are overviewed. Finally, the role of H2S in the regulation of various organ functions is discussed as well as the characteristic bell-shaped biphasic effects of H2S. In addition, key pathophysiological aspects, debated areas, and future research and translational areas are identified A wide array of significant roles of H2S in the physiological regulation of all organ functions emerges from this review.
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Affiliation(s)
- Giuseppe Cirino
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Csaba Szabo
- Chair of Pharmacology, Section of Medicine, University of Fribourg, Switzerland
| | - Andreas Papapetropoulos
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece & Clinical, Experimental Surgery and Translational Research Center, Biomedical Research Foundation of the Academy of Athens, Greece
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Arif HM, Qian Z, Wang R. Signaling Integration of Hydrogen Sulfide and Iron on Cellular Functions. Antioxid Redox Signal 2022; 36:275-293. [PMID: 34498949 DOI: 10.1089/ars.2021.0203] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Significance: Hydrogen sulfide (H2S) is an endogenous signaling molecule, regulating numerous physiological functions from vasorelaxation to neuromodulation. Iron is a well-known bioactive metal ion, being the central component of hemoglobin for oxygen transportation and participating in biomolecule degradation, redox balance, and enzymatic actions. The interplay between H2S and iron metabolisms and functions impacts significantly on the fate and wellness of different types of cells. Recent Advances: Iron level in vivo affects the production of H2S via nonenzymatic reactions. On the contrary, H2S quenches excessive iron inside the cells and regulates the redox status of iron. Critical Issues: Abnormal metabolisms of both iron and H2S are associated with various conditions and diseases such as iron overload, anemia, oxidative stress, and cardiovascular and neurodegenerative diseases. The molecular mechanisms for the interactions between H2S and iron are unsettled yet. Here we review signaling links of the production, metabolism, and their respective and integrative functions of H2S and iron in normalcy and diseases. Future Directions: Physiological and pathophysiological importance of H2S and iron as well as their therapeutic applications should be evaluated jointly, not separately. Future investigation should expand from iron-rich cells and tissues to the others, in which H2S and iron interaction has not received due attention. Antioxid. Redox Signal. 36, 275-293.
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Affiliation(s)
| | - Zhongming Qian
- Institute of Translational & Precision Medicine, Nantong University, Nantong, China
| | - Rui Wang
- Department of Biology, York University, Toronto, Canada
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Rahul, Siddique YH. Neurodegenerative Diseases and Flavonoids: Special Reference to Kaempferol. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 20:327-342. [PMID: 33511932 DOI: 10.2174/1871527320666210129122033] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/21/2020] [Accepted: 09/13/2020] [Indexed: 12/20/2022]
Abstract
Neurodegenerative diseases like Alzheimer's disease, Parkinson's disease, Huntington's disease, Multiple Sclerosis and Ischemic stroke have become a major health problem worldwide. Pre-clinical studies have demonstrated the beneficial effects of flavonoids on neurodegenerative diseases and suggest them to be used as therapeutic agents. Kaempferol is found in many plants such as tea, beans, broccoli, strawberries, and neuroprotective effects against the development of many neurodegenerative diseases such as Parkinson, Alzheimer's disease and Huntington's disease. The present study summarizes the neuroprotective effects of kaempferol in various models of neurodegenerative diseases. Kaempferol delays the initiation as well as the progression of neurodegenerative disorders by acting as a scavenger of free radicals and preserving the activity of various antioxidant enzymes. Kaempferol can cross the Blood-Brain Barrier (BBB), and therefore results in an enhanced protective effect. The multi-target property of kaempferol makes it a potential dietary supplement in preventing and treating neurodegenerative diseases.
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Affiliation(s)
- Rahul
- Drosophila Transgenic Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Yasir H Siddique
- Drosophila Transgenic Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
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Hydrogen Sulfide and Pathophysiology of the CNS. NEUROPHYSIOLOGY+ 2021. [DOI: 10.1007/s11062-021-09887-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Valério GN, Gutiérrez-Merino C, Nogueira F, Moura I, Moura JJG, Samhan-Arias AK. Human erythrocytes exposure to juglone leads to an increase of superoxide anion production associated with cytochrome b 5 reductase uncoupling. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1861:148134. [PMID: 31825806 DOI: 10.1016/j.bbabio.2019.148134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/30/2019] [Accepted: 12/05/2019] [Indexed: 12/11/2022]
Abstract
Cytochrome b5 reductase is an enzyme with the ability to generate superoxide anion at the expenses of NADH consumption. Although this activity can be stimulated by cytochrome c and could participate in the bioenergetic failure accounting in apoptosis, very little is known about other molecules that may uncouple the function of the cytochrome b5 reductase. Naphthoquinones are redox active molecules with the ability to interact with electron transfer chains. In this work, we made an inhibitor screening against recombinant human cytochrome b5 reductase based on naphthoquinone properties. We found that 5-hydroxy-1,4-naphthoquinone (known as juglone), a natural naphthoquinone extracted from walnut trees and used historically in traditional medicine with ambiguous health and toxic outcomes, had the ability to uncouple the electron transfer from the reductase to cytochrome b5 and ferricyanide. Upon complex formation with cytochrome b5 reductase, juglone is able to act as an electron acceptor leading to a NADH consumption stimulation and an increase of superoxide anion production by the reductase. Our results suggest that cytochrome b5 reductase could contribute to the measured energetic failure in the erythrocyte apoptosis induced by juglone, that is concomitant with the reactive oxygen species produced by cytochrome b5 reductase.
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Affiliation(s)
- Gabriel N Valério
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Carlos Gutiérrez-Merino
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, Institute of Molecular Pathology Biomarkers, University of Extremadura, 06006 Badajoz, Spain
| | - Fatima Nogueira
- Global Health and Tropical Medicine, GHTM, Unidade de Ensino e Investigação de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Rua da Junqueira no 100, 1349-008 Lisbon, Portugal
| | - Isabel Moura
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - José J G Moura
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Alejandro K Samhan-Arias
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM) and Instituto de Investigaciones Biomédicas 'Alberto Sols' (CSIC-UAM), c / Arturo Duperier 4, 28029-Madrid, Spain.
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Gopalakrishnan P, Shrestha B, Kaskas AM, Green J, Alexander JS, Pattillo CB. Hydrogen sulfide: Therapeutic or injurious in ischemic stroke? PATHOPHYSIOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY FOR PATHOPHYSIOLOGY 2019; 26:1-10. [PMID: 30528175 DOI: 10.1016/j.pathophys.2018.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 07/10/2018] [Accepted: 10/22/2018] [Indexed: 01/09/2023]
Abstract
Hydrogen sulfide (H2S) has been identified as a vasodilatory, neuromodulatory, and anti-inflammatory gasotransmitter with antioxidant properties. Studies focused in cardiac tissue suggest H2S functions as a protective agent; however in the central nervous system (CNS) the effects of H2S during states of stress or injury, such as stroke, remain controversial. Currently, the application of H2S donors and modulators in stroke depends on the type of H2S donor and the timing of the therapy.
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Affiliation(s)
- Priya Gopalakrishnan
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
| | - B Shrestha
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
| | - A M Kaskas
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
| | - J Green
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
| | - J S Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
| | - C B Pattillo
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA.
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Samhan-Arias AK, Fortalezas S, Cordas CM, Moura I, Moura JJG, Gutierrez-Merino C. Cytochrome b 5 reductase is the component from neuronal synaptic plasma membrane vesicles that generates superoxide anion upon stimulation by cytochrome c. Redox Biol 2018; 15:109-114. [PMID: 29227865 PMCID: PMC5726884 DOI: 10.1016/j.redox.2017.11.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 11/23/2017] [Accepted: 11/24/2017] [Indexed: 12/20/2022] Open
Abstract
In this work, we measured the effect of cytochrome c on the NADH-dependent superoxide anion production by synaptic plasma membrane vesicles from rat brain. In these membranes, the cytochrome c stimulated NADH-dependent superoxide anion production was inhibited by antibodies against cytochrome b5 reductase linking the production to this enzyme. Measurement of the superoxide anion radical generated by purified recombinant soluble and membrane cytochrome b5 reductase corroborates the production of the radical by different enzyme isoforms. In the presence of cytochrome c, a burst of superoxide anion as well as the reduction of cytochrome c by cytochrome b5 reductase was measured. Complex formation between both proteins suggests that cytochrome b5 reductase is one of the major partners of cytochrome c upon its release from mitochondria to the cytosol during apoptosis. Superoxide anion production and cytochrome c reduction are the consequences of the stimulated NADH consumption by cytochrome b5 reductase upon complex formation with cytochrome c and suggest a major role of this enzyme as an anti-apoptotic protein during cell death.
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Key Words
- Cb(5)R, Cytochrome b(5) reductase
- Cytochrome b(5) reductase
- Cytochrome c
- DHE, Dihydroethidium
- DTPA, Diethylenetriaminepentaacetic acid
- E(+), Ethidium
- FAD, Flavin adenine dinucleotide
- NADH oxidase
- NADH, Reduced nicotinamide adenine dinucleotide
- NBT, Nitroblue tetrazolium nitroblue tetrazolium
- Neurons
- SOD, Superoxide dismutase
- SPMV, Synaptic plasma membrane vesicles
- Superoxide anion
- TB, Terrific Broth terrific Broth
- XA, Xanthine xanthine
- XO, Xanthine oxidase
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Affiliation(s)
- Alejandro K Samhan-Arias
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Sofia Fortalezas
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, and Institute of Molecular Pathology Biomarkers, University of Extremadura, 06006 Badajoz, Spain
| | - Cristina M Cordas
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Isabel Moura
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - José J G Moura
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Carlos Gutierrez-Merino
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, and Institute of Molecular Pathology Biomarkers, University of Extremadura, 06006 Badajoz, Spain.
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Effects of Sulfate Reduction on Trichloroethene Dechlorination by Dehalococcoides-Containing Microbial Communities. Appl Environ Microbiol 2017; 83:AEM.03384-16. [PMID: 28159790 DOI: 10.1128/aem.03384-16] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 01/26/2017] [Indexed: 12/26/2022] Open
Abstract
In order to elucidate interactions between sulfate reduction and dechlorination, we systematically evaluated the effects of different concentrations of sulfate and sulfide on reductive dechlorination by isolates, constructed consortia, and enrichments containing Dehalococcoides sp. Sulfate (up to 5 mM) did not inhibit the growth or metabolism of pure cultures of the dechlorinator Dehalococcoides mccartyi 195, the sulfate reducer Desulfovibrio vulgaris Hildenborough, or the syntroph Syntrophomonas wolfei In contrast, sulfide at 5 mM exhibited inhibitory effects on growth of the sulfate reducer and the syntroph, as well as on both dechlorination and growth rates of D. mccartyi Transcriptomic analysis of D. mccartyi 195 revealed that genes encoding ATP synthase, biosynthesis, and Hym hydrogenase were downregulated during sulfide inhibition, whereas genes encoding metal-containing enzymes involved in energy metabolism were upregulated even though the activity of those enzymes (hydrogenases) was inhibited. When the electron acceptor (trichloroethene) was limiting and an electron donor (lactate) was provided in excess to cocultures and enrichments, high sulfate concentrations (5 mM) inhibited reductive dechlorination due to the toxicity of generated sulfide. The initial cell ratio of sulfate reducers to D. mccartyi (1:3, 1:1, or 3:1) did not affect the dechlorination performance in the presence of sulfate (2 and 5 mM). In contrast, under electron donor limitation, dechlorination was not affected by sulfate amendments due to low sulfide production, demonstrating that D. mccartyi can function effectively in anaerobic microbial communities containing moderate sulfate concentrations (5 mM), likely due to its ability to outcompete other hydrogen-consuming bacteria and archaea.IMPORTANCE Sulfate is common in subsurface environments and has been reported as a cocontaminant with chlorinated solvents at various concentrations. Inconsistent results for the effects of sulfate inhibition on the performance of dechlorination enrichment cultures have been reported in the literature. These inconsistent findings make it difficult to understand potential mechanisms of sulfate inhibition and complicate the interpretation of bioremediation field data. In order to elucidate interactions between sulfate reduction and reductive dechlorination, this study systematically evaluated the effects of different concentrations of sulfate and sulfide on reductive dechlorination by isolates, constructed consortia, and enrichments containing Dehalococcoides sp. This study provides a more fundamental understanding of the competition mechanisms between reductive dechlorination by Dehalococcoides mccartyi and sulfate reduction during the bioremediation process. It also provides insights on the significance of sulfate concentrations on reductive dechlorination under electron donor/acceptor-limiting conditions during in situ bioremediation applications. For example, at a trichloroethene-contaminated site with a high sulfate concentration, proper slow-releasing electron donors can be selected to generate an electron donor-limiting environment that favors reductive dechlorination and minimizes the sulfide inhibition effect.
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Gajjala PR, Fliser D, Speer T, Jankowski V, Jankowski J. Emerging role of post-translational modifications in chronic kidney disease and cardiovascular disease. Nephrol Dial Transplant 2015; 30:1814-1824. [DOI: 10.1093/ndt/gfv048] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Kaur M, Sachdeva S, Bedi O, Kaur T, Kumar P. Combined effect of hydrogen sulphide donor and losartan in experimental diabetic nephropathy in rats. J Diabetes Metab Disord 2015. [PMID: 26221579 PMCID: PMC4517497 DOI: 10.1186/s40200-015-0185-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Background Diabetic nephropathy (DN) is one of the complex complications of Diabetes Mellitus (DM). The present study has been designed to examine protective role of hydrogen Sulphide (H2S) donor against streptozotocin (STZ) -induced behavioral, oxidative abnormalities and its DN like symptoms in rats. Methods For the induction of DN single intraperitoneal administration of STZ (45 mg/kg) was given till third week. Behavioral parameters were measured on 1st, 7th, 21st and 42nd days and biochemical parameters were performed on 42nd day. All the drug treatments [NaHS (10 & 30 μmol/kg i.p), DL-propargylglycine (10 mg/kg i.p), standard drug- Losartan (5 mg/kg p.o)] were given for 3 weeks staring from 21st day after the STZ injection. Results Three weeks treatment with sodium hydrosulphide (NaHS) (10 and 30 μmol/kg i.p,) significantly attenuated the behavioral and biochemical abnormalities in STZ-treated animals. DL-propargylglycine (10 mg/kg i.p) pretreatment with sub-effective dose of NaHS (30 μmol/kg i.p) significantly reversed the protective effect of NaHS. However, combination of both NaHS (30 μmol/kg i.p) and standard drug losartan (5 mg/kg p.o) potentiated their effects as compared to their effect alone. Conclusion The results of the present study suggest that H2S treatment showed significant improvement in behavioral and biochemical abnormalities induced by STZ administration. Thus H2S represents a target of treatment to prevent the progression of complications by DN.
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Affiliation(s)
- Manpreet Kaur
- Pharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, 14200 Punjab India
| | - Shilpi Sachdeva
- Pharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, 14200 Punjab India
| | - Onkar Bedi
- Pharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, 14200 Punjab India
| | - Tavleen Kaur
- Pharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, 14200 Punjab India
| | - Puneet Kumar
- Pharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, 14200 Punjab India
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Superoxide Mediates Depressive Effects Induced by Hydrogen Sulfide in Rostral Ventrolateral Medulla of Spontaneously Hypertensive Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:927686. [PMID: 26078823 PMCID: PMC4442288 DOI: 10.1155/2015/927686] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/04/2015] [Accepted: 01/04/2015] [Indexed: 12/02/2022]
Abstract
Hydrogen sulfide (H2S) plays a crucial role in the regulation of blood pressure and oxidative stress. In the present study, we tested the hypothesis that H2S exerts its cardiovascular effects by reducing oxidative stress via inhibition of NADPH oxidase activity in the rostral ventrolateral medulla (RVLM). We examined cell distributions of cystathionine-β-synthase (CBS) and effects of H2S on reactive oxygen species (ROS) and mean arterial blood pressure (MAP) in spontaneously hypertensive rats (SHRs). We found that CBS was expressed in neurons of the RVLM, and the expression was lower in SHRs than in Wistar-Kyoto rats. Microinjection of NaHS (H2S donor), S-adenosyl-l-methionine (SAM, a CBS agonist), or Apocynin (NADPH oxidase inhibitor) into the RVLM reduced the ROS level, NADPH oxidase activity, and MAP, whereas microinjection of hydroxylamine hydrochloride (HA, a CBS inhibitor) increased MAP. Furthermore, intracerebroventricular infusion of NaHS inhibited phosphorylation of p47phox, a key step of NADPH oxidase activation. Since decreasing ROS level in the RVLM reduces MAP and heart rate and increasing H2S reduces ROS production, we conclude that H2S exerts an antihypertensive effect via suppressing ROS production. H2S, as an antioxidant, may be a potential target for cardiovascular diseases.
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Kotsyuba AE, Chertok VM. Immunolocation of cystationine β-synthase in cerebral pontile nuclei in humans. Bull Exp Biol Med 2013; 155:277-9. [PMID: 24131008 DOI: 10.1007/s10517-013-2131-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The immunolocation of cystationine β-synthase in the motor, sensitive, and autonomic nuclei of the cerebral pons was studied on the material from 8 healthy men aged 18-44 years dead from traumas not involving the CNS. The motor nuclei contained numerous large intensely stained cells, while the sensitive and autonomic nuclei contained many small neurons with low levels of cystationine β-synthase marker. However, cells with intense reaction were found among small neurons. They were located mainly at the nuclear periphery, between the nuclei or between the nuclei and conduction tracts. The content of immunopositive neurons in the studied nuclei varied from 2 to 14%. The level of these cells in motor nuclei was 3-4-fold higher than in sensitive and autonomic nuclei.
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Affiliation(s)
- A E Kotsyuba
- Department of Human Anatomy, Vladivostok State Medical University, Russia.
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14
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The effect of lipoic acid on cyanate toxicity in different structures of the rat brain. Neurotox Res 2013; 24:345-57. [PMID: 23625581 PMCID: PMC3753499 DOI: 10.1007/s12640-013-9395-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/27/2013] [Accepted: 04/19/2013] [Indexed: 01/17/2023]
Abstract
Cyanate is formed mostly during nonenzymatic urea biodegradation. Its active form isocyanate reacts with protein -NH2 and -SH groups, which changes their structure and function. The present studies aimed to investigate the effect of cyanate on activity of the enzymes, which possess -SH groups in the active centers and are implicated in anaerobic cysteine transformation and cyanide detoxification, as well as on glutathione level and peroxidative processes in different brain structures of the rat: cortex, striatum, hippocampus, and substantia nigra. In addition, we examined whether a concomitant treatment with lipoate, a dithiol that may act as a target of S-carbamoylation, can prevent these changes. Cyanate-inhibited sulfurtransferase activities and lowered sulfide level, which was accompanied by a decrease in glutathione concentration and elevation of reactive oxygen species level in almost all rat brain structures. Lipoate administered in combination with cyanate was able to prevent the above-mentioned negative cyanate-induced changes in a majority of the examined brain structures. These observations can be promising for chronic renal failure patients since lipoate can play a double role in these patients contributing to efficient antioxidant defense and protection against cyanate and cyanide toxicity.
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15
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Streeter E, Hart J, Badoer E. An investigation of the mechanisms of hydrogen sulfide-induced vasorelaxation in rat middle cerebral arteries. Naunyn Schmiedebergs Arch Pharmacol 2012; 385:991-1002. [PMID: 22801977 DOI: 10.1007/s00210-012-0779-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 06/28/2012] [Indexed: 01/08/2023]
Abstract
Hydrogen sulfide (H(2)S) is an endogenous mediator with peripheral vasorelaxant effects; however, the mechanism of H(2)S-induced vasorelaxation in cerebral blood vessels has not been extensively studied. Vasorelaxation studies were performed on middle cerebral arteries from male Sprague Dawley rats using wire myography. Immunofluorescence staining was used to detect the presence of the H(2)S-producing enzyme cystathionine-γ-lyase (CSE). CSE was present in the endothelium and smooth muscle of middle cerebral arteries. The CSE substrate, L-cysteine, induced vasorelaxation that was sensitive to the CSE inhibitor DL-propargylglycine. This relaxation was independent of endothelium, suggesting that H(2)S was produced in the vascular smooth muscle. The H(2)S donor, sodium hydrogen sulfide (NaHS; 0.1-3.0 mM) produced concentration-dependent relaxation, which was unaffected by endothelium removal. Nifedipine (3 μM) significantly reduced the maximum relaxation elicited by NaHS. Inhibiting potassium (K(+)) conductance with 50 mM K(+) significantly attenuated NaHS-induced relaxation, however, selective blockers of ATP sensitive (K(ATP)), calcium sensitive (K(Ca)), voltage dependent (K(V)), or inward rectifier (K(ir)) channels alone or in combination did not affect the response to NaHS. 4,4-diisothiocyanatostilbene-2,2-disulfonic acid (DIDS; 300 μM) caused a significant rightward shift of the NaHS concentration-response curve, but this effect could not be explained by inhibition of Cl(-) channels or Cl(-)/HCO (3)(-) exchange, as selective blockade of these mechanisms had no effect. These findings suggest endogenous H(2)S can regulate cerebral vascular function. The H(2)S-mediated relaxation of middle cerebral arteries is DIDS sensitive and partly mediated by inhibition of L-type calcium channels, with an additional contribution by K channels but not K(ATP), K(Ca), K(V), or K(ir) subtypes.
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MESH Headings
- Animals
- Cystathionine gamma-Lyase/metabolism
- Dose-Response Relationship, Drug
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/enzymology
- Endothelium, Vascular/physiopathology
- Hydrogen Sulfide/metabolism
- Immunohistochemistry
- In Vitro Techniques
- Male
- Microscopy, Confocal
- Middle Cerebral Artery/drug effects
- Middle Cerebral Artery/enzymology
- Middle Cerebral Artery/physiopathology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/physiopathology
- Myography
- Rats
- Rats, Sprague-Dawley
- Sulfides/pharmacology
- Vasodilation/drug effects
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Affiliation(s)
- E Streeter
- School of Medical Sciences and Health Innovations Research Institute, RMIT University, PO Box 71, Bundoora 3083, Melbourne, Victoria, Australia
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Shao Y, Wu LL, Gao HW, Wang F. Effect of soluble sulfide on the activity of luminescent bacteria. Molecules 2012; 17:6046-55. [PMID: 22614859 PMCID: PMC6268069 DOI: 10.3390/molecules17056046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 05/11/2012] [Accepted: 05/14/2012] [Indexed: 12/23/2022] Open
Abstract
Sulfide is an important water pollutant widely found in industrial waste water that has attracted much attention. S²⁻, as a weak acidic anion, is easy hydrolyzed to HS⁻ and H₂S in aqueous solution. In this study, biological tests were performed to establish the toxicity of sulfide solutions on luminescent bacteria. Considering the sulfide solution was contained three substances--S²⁻, HS⁻ and H₂S--the toxicity test was performed at different pH values to investigate which form of sulfide increased light emission and which reduced light emission. It was shown that the EC₅₀ values were close at pH 7.4, 8.0 and 9.0 which were higher than pH 5 and 10. The light emission and sulfide concentrations displayed an inverse exponential dose-response relationship within a certain concentration range at pH 5, 6.5 and 10. The same phenomenon occurred for the high concentration of sulfide at pH 7.4, 8 and 9, in which the concentration of sulfide was HS⁻ >> H₂S > S²⁻. An opposite hormesis-effect appeared at the low concentrations of sulfide.
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Affiliation(s)
- Ying Shao
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 20092, China; E-Mails: (Y.S.); (F.W.)
| | - Ling-Ling Wu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 20092, China; E-Mails: (Y.S.); (F.W.)
| | - Hong-Wen Gao
- State Key Laboratory of Environmental Pollution and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; E-Mail:
| | - Feng Wang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 20092, China; E-Mails: (Y.S.); (F.W.)
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Ackermann M, Kubitza M, Maier K, Brawanski A, Hauska G, Piña AL. The vertebrate homolog of sulfide-quinone reductase is expressed in mitochondria of neuronal tissues. Neuroscience 2011; 199:1-12. [PMID: 22067608 DOI: 10.1016/j.neuroscience.2011.10.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Revised: 10/15/2011] [Accepted: 10/17/2011] [Indexed: 12/24/2022]
Abstract
Hydrogen sulfide (H₂S) can be consumed by both invertebrates and vertebrates as an inorganic substrate. The pathway metabolizing H₂S probably involves three mitochondrial enzymes, one of which is sulfide-quinone oxidoreductase (SQR), known as sulfide-quinone reductase-like protein (SQRDL) in vertebrates. Evidence from fission yeast suggests that SQR might have a role in regulating sulfide levels in the cell. Regulation might be essential for H₂S to act as a gaseous transmitter (gasotransmitter). The brain is an organ with high activity of gasotransmitters, like nitric oxide (NO) and H₂S, which are known to affect synaptic transmission. In this study, we provide evidence that SQRDL is expressed in the mammalian brain. Real-time polymerase chain reaction (PCR) showed an increase in the number of Sqrdl transcripts in the brain with increasing age. Cellular fractionation and subsequent analysis by Western blotting indicated that the protein is located in mitochondria, which is the site of sulfide consumption in the cell. With an immunohistochemical approach, we demonstrated that the SQRDL protein is expressed in neurons, oligodendrocytes, and endothelial cells. Taken together, our data suggest that brain tissue harbors the machinery required for local regulation of sulfide levels.
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Affiliation(s)
- M Ackermann
- Department of Neurosurgery at the University Clinic, University of Regensburg, Regensburg, Germany
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Li Z, Wang Y, Xie Y, Yang Z, Zhang T. Protective Effects of Exogenous Hydrogen Sulfide on Neurons of Hippocampus in a Rat Model of Brain Ischemia. Neurochem Res 2011; 36:1840-9. [DOI: 10.1007/s11064-011-0502-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2011] [Indexed: 12/20/2022]
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Taniguchi S, Kang L, Kimura T, Niki I. Hydrogen sulphide protects mouse pancreatic β-cells from cell death induced by oxidative stress, but not by endoplasmic reticulum stress. Br J Pharmacol 2011; 162:1171-8. [PMID: 21091646 DOI: 10.1111/j.1476-5381.2010.01119.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Hydrogen sulphide (H₂S), a potentially toxic gas, is also involved in the neuroprotection, neuromodulation, cardioprotection, vasodilatation and the regulation of inflammatory response and insulin secretion. We have recently reported that H₂S suppresses pancreatic β-cell apoptosis induced by long-term exposure to high glucose. Here we examined the protective effects of sodium hydrosulphide (NaHS), an H₂S donor, on various types of β-cell damage. EXPERIMENTAL APPROACH Isolated islets from mice or the mouse insulinoma MIN6 cells were cultured with palmitate, cytokines (a mixture of tumour necrosis factor-α, interferon-γ and interleukin-1β), hydrogen peroxide, thapsigargin or tunicamycin with or without NaHS. We examined DNA fragmentation, caspase-3 and -7 activities and reactive oxygen species (ROS) production in the treated cells thereafter. Apoptotic cell death in isolated islets was also assessed by the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labelling (TUNEL) method. KEY RESULTS NaHS suppressed DNA fragmentation and the activities of caspase-3 and -7 induced by palmitate, the cytokines or hydrogen peroxide. In contrast, NaHS failed to protect islets and MIN6 cells from apoptosis induced by thapsigargin and tunicamycin, both of which cause endoplasmic reticulum stress. NaHS suppressed ROS production induced by cytokines or hydrogen peroxide but it had no effect on ROS production in thapsigargin-treated cells. NaHS increased Akt phosphorylation in MIN6 cells treated with cytokines but not in cells treated with thapsigargin. Treatment with NaHS decreased TUNEL-positive cells in cytokine-exposed islets. CONCLUSIONS AND IMPLICATIONS H₂S may prevent pancreatic β-cells from cell apoptosis via an anti-oxidative mechanism and the activation of Akt signalling.
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Affiliation(s)
- S Taniguchi
- Department of Pharmacology, Faculty of Medicine, Oita University, Hasama, Oita, Japan
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