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Emerson M, Solomon A, Smyth E, Wood ME, Whiteman M. P104 Inhibition of platelet aggregation in vitro and in vivo by the H2S releasing compound GYY4137. Nitric Oxide 2014. [DOI: 10.1016/j.niox.2014.03.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jeney V, Potor L, Pethő D, Whiteman M, Wood ME, Balla G, Balla J. P99 Hydrogen-sulfide releasing molecules inhibit intraplaque hemorrhage-associated oxidative burst in the human atheroma and subsequent endothelial reactions. Nitric Oxide 2014. [DOI: 10.1016/j.niox.2014.03.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Szczesny B, Módis K, Yanagi K, Trionnaire SL, Wood ME, Whiteman M, Szabo C. P21. Nitric Oxide 2014. [DOI: 10.1016/j.niox.2014.03.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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79
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Szczesny B, Módis K, Yanagi K, Coletta C, Le Trionnaire S, Perry A, Wood ME, Whiteman M, Szabo C. AP39, a novel mitochondria-targeted hydrogen sulfide donor, stimulates cellular bioenergetics, exerts cytoprotective effects and protects against the loss of mitochondrial DNA integrity in oxidatively stressed endothelial cells in vitro. Nitric Oxide 2014; 41:120-30. [PMID: 24755204 DOI: 10.1016/j.niox.2014.04.008] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 04/08/2014] [Accepted: 04/14/2014] [Indexed: 12/12/2022]
Abstract
The purpose of the current study was to investigate the effect of the recently synthesized mitochondrially-targeted H2S donor, AP39 [(10-oxo-10-(4-(3-thioxo-3H-1,2-dithiol-5yl)phenoxy)decyl) triphenylphosphonium bromide], on bioenergetics, viability, and mitochondrial DNA integrity in bEnd.3 murine microvascular endothelial cells in vitro, under normal conditions, and during oxidative stress. Intracellular H2S was assessed by the fluorescent dye 7-azido-4-methylcoumarin. For the measurement of bioenergetic function, the XF24 Extracellular Flux Analyzer was used. Cell viability was estimated by the combination of the MTT and LDH methods. Oxidative protein modifications were measured by the Oxyblot method. Reactive oxygen species production was monitored by the MitoSOX method. Mitochondrial and nuclear DNA integrity were assayed by the Long Amplicon PCR method. Oxidative stress was induced by addition of glucose oxidase. Addition of AP39 (30-300 nM) to bEnd.3 cells increased intracellular H2S levels, with a preferential response in the mitochondrial regions. AP39 exerted a concentration-dependent effect on mitochondrial activity, which consisted of a stimulation of mitochondrial electron transport and cellular bioenergetic function at lower concentrations (30-100 nM) and an inhibitory effect at the higher concentration of 300 nM. Under oxidative stress conditions induced by glucose oxidase, an increase in oxidative protein modification and an enhancement in MitoSOX oxidation was noted, coupled with an inhibition of cellular bioenergetic function and a reduction in cell viability. AP39 pretreatment attenuated these responses. Glucose oxidase induced a preferential damage to the mitochondrial DNA; AP39 (100 nM) pretreatment protected against it. In conclusion, the current paper documents antioxidant and cytoprotective effects of AP39 under oxidative stress conditions, including a protection against oxidative mitochondrial DNA damage.
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Kirkham PA, Whiteman M, Winyard PG, Caramori G, Gordon F, Ford PA, Barnes PJ, Adcock IM, Chung KF. Impact of theophylline/corticosteroid combination therapy on sputum hydrogen sulfide levels in patients with COPD. Eur Respir J 2014; 43:1504-6. [PMID: 24525446 DOI: 10.1183/09031936.00131513] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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81
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Le Trionnaire S, Perry A, Szczesny B, Szabo C, Winyard PG, Whatmore JL, Wood ME, Whiteman M. The synthesis and functional evaluation of a mitochondria-targeted hydrogen sulfide donor, (10-oxo-10-(4-(3-thioxo-3H-1,2-dithiol-5-yl)phenoxy)decyl)triphenylphosphonium bromide (AP39). MEDCHEMCOMM 2014. [DOI: 10.1039/c3md00323j] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mitochondrial dysfunction is observed in many diseases. Targeting H2S generation to mitochondria may be cytoprotective.
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Yang HY, Wu ZY, Wood M, Whiteman M, Bian JS. Hydrogen sulfide attenuates opioid dependence by suppression of adenylate cyclase/cAMP pathway. Antioxid Redox Signal 2014; 20:31-41. [PMID: 23682813 PMCID: PMC3880902 DOI: 10.1089/ars.2012.5119] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIMS The best-established mechanism of opioid dependence is the up-regulation of adenylate cyclase (AC)/cAMP pathway, which was reported to be negatively regulated by hydrogen sulfide (H2S), a novel endogenous neuromodulator. The present study was, therefore, designed to determine whether H2S is able to attenuate the development of opioid dependence via down-regulating AC/cAMP pathway. RESULTS We demonstrated that application of sodium hydrosulphide (NaHS) and GYY4137, two donors of H2S, significantly alleviated naloxone-induced robust withdrawal jumping (the most sensitive and reliable index of opioid physical dependence) in morphine-treated mice. Repeated treatment with NaHS inhibited the up-regulated protein expression of AC in the striatum of morphine-dependent mice. Furthermore, NaHS also attenuated morphine/naloxone-elevated mRNA levels of AC isoform 1 and 8, production of cAMP, and phosphorylation of cAMP response element-binding protein (CREB) in mice striatum. These effects were mimicked by the application of exogenous H2S or over-expression of cystathione-β-synthase, an H2S -producing enzyme, in SH-SY5Y neuronal cells on treatment with [D-Ala(2),N-Me-Phe(4),Gly(5)-ol]-Enkephalin, a selective μ-opioid receptor agonist. Blockade of extracellular-regulated protein kinase 1/2 (ERK1/2) with its specific inhibitor attenuated naloxone-induced CREB phosphorylation. Pretreatment with NaHS or stimulation of endogenous H2S production also significantly suppressed opioid withdrawal-induced ERK1/2 activation in mice striatum or SH-SY5Y cells. INNOVATION H2S treatment is important in prevention of the development of opioid dependence via suppression of cAMP pathway in both animal and cellular models. CONCLUSION Our data suggest a potential role of H2S in attenuating the development of opioid dependence, and the underlying mechanism is closely related to the inhibition of AC/cAMP pathway.
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83
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Snijder PM, van den Berg E, Whiteman M, Bakker SJL, Leuvenink HGD, van Goor H. Emerging role of gasotransmitters in renal transplantation. Am J Transplant 2013; 13:3067-75. [PMID: 24266966 DOI: 10.1111/ajt.12483] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 08/21/2013] [Accepted: 08/21/2013] [Indexed: 01/25/2023]
Abstract
Once patients with kidney disease progress to end-stage renal failure, transplantation is the preferred option of treatment resulting in improved quality of life and reduced mortality compared to dialysis. Although 1-year survival has improved considerably, graft and patient survival in the long term have not been concurrent, and therefore new tools to improve long-term graft and patient survival are warranted. Over the past decades, the gasotransmitters nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) have emerged as potent cytoprotective mediators in various diseases. All three gasotransmitters are endogenously produced messenger molecules that possess vasodilatory, anti-apoptotic, anti-inflammatory and anti-oxidant properties by influencing an array of intracellular signaling processes. Although many regulatory functions of gasotransmitters have overlapping actions, differences have also been reported. In addition, crosstalk between NO, CO and H2S results in synergistic regulatory effects. Endogenous and exogenous manipulation of gasotransmitter levels modulates several processes involved in renal transplantation. This review focuses on mechanisms of gas-mediated cytoprotection and complex interactions between gasotransmitters in renal transplantation.
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Lencesova L, Hudecova S, Markova J, Soltysova A, Sedlak J, Wood M, Whiteman M, Ondrias K, Krizanova O. P25 Sulfide signalling potentiates apoptosis through the up-regulation of IP3 receptors type 1 and 2. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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85
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Whatmore J, Wolanska K, Perry A, Wood M, Whiteman M. P54 Slow release hydrogen sulfide (H2S) donors prevent hyperglycaemia-induced glycocalyx loss in retinal mirovascular endothelial cells. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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86
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Radermacher P, McCook O, Asfar P, Calzia E, Wood ME, Szabó C, Whiteman M, Wang R. PL03 Expression of H2S-catalyzing enzymes during “acute chronic disease”. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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87
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Le Trionnaire S, Perry A, Whatmore J, Wood M, Whiteman M. P50 Mitochondria-targeted hydrogen sulfide donors: A novel twist to an old “tail”? Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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88
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Ilkan Z, Mustafa F, Apostoli G, Solomon A, Whiteman M, Emerson M. OP16 Hydrogen sulfide inhibits human platelet aggregation. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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89
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Jeney V, Potor L, Whiteman M, Wood ME, Balla G, Balla J. P58 Potential anti-atherogenic effects of hydrogen-sulfide releasing molecules. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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90
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Malekova L, Pavlovicova M, Kristek F, Tomasova L, Wood M, Whiteman M, Ondrias K. P30 Effects of H2S-donors on membrane channels. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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91
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Kottke M, Whiteman M, Kraft J, Goedken P, DiClemente R. Dual method use in young African American women. Contraception 2013. [DOI: 10.1016/j.contraception.2013.05.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Whiteman M, Perry A, Trionnaire SL, Whatmore JL, Ahmed T, Fox B, Kerr P, Haigh R, Winyard PG, Wood ME. PL04 Modulation of inflammatory and vascular signalling by novel slow release and mitochondria-targeted H2S donors. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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93
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Lisjak M, Teklic T, Wilson I, Wood M, Whiteman M, Špoljarević M, Hancock J. OP012 The role of H2S in pepper leaves under salt stress conditions. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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94
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Lisjak M, Teklic T, Wilson ID, Whiteman M, Hancock JT. Hydrogen sulfide: environmental factor or signalling molecule? PLANT, CELL & ENVIRONMENT 2013; 36:1607-16. [PMID: 23347018 DOI: 10.1111/pce.12073] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 01/15/2013] [Accepted: 01/16/2013] [Indexed: 05/19/2023]
Abstract
Hydrogen sulfide (H₂S) has traditionally been thought of as a phytotoxin, having deleterious effects on the plant growth and survival. It is now recognized that plants have enzymes which generate H₂S, cysteine desulfhydrase, and remove it, O-acetylserine lyase. Therefore, it has been suggested that H₂S is considered as a signalling molecule, alongside small reactive compounds such as hydrogen peroxide (H₂O₂) and nitric oxide (NO). Exposure of plants to low of H₂S, for example from H₂S donors, is revealing that many physiological effects are seen. H₂S seems to have effects on stomatal apertures. Intracellular effects include increases in glutathione levels, alterations of enzyme activities and influences on NO and H₂O₂ metabolism. Work in animals has shown that H₂S may have direct effects on thiol modifications of cysteine groups, work that will no doubt inform future studies in plants. It appears therefore, that instead of thinking of H₂S as a phytotoxin, it needs to be considered as a signalling molecule that interacts with reactive oxygen species and NO metabolism, as well as having direct effects on the activity of proteins. The future may see H₂S being used to modulate plant physiology in the field or to protect crops from postharvest spoilage.
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Fox B, Holland T, Wood ME, Winyard PG, Whiteman M. P14 Comparing the differential effects of novel, slow-release H2S donors on inflammatory mediators and cell proliferation in human joint and immune cells. Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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96
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Lo Faro ML, Whatmore J, More J, Whiteman M, Winyard PG. OP28 Is hydrogen sulfide involved in mediating functional effects of dietary nitrate ingestion in humans? Nitric Oxide 2013. [DOI: 10.1016/j.niox.2013.06.058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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97
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Lencesova L, Hudecova S, Csaderova L, Markova J, Soltysova A, Pastorek M, Sedlak J, Wood ME, Whiteman M, Ondrias K, Krizanova O. Sulphide signalling potentiates apoptosis through the up-regulation of IP3 receptor types 1 and 2. Acta Physiol (Oxf) 2013; 208:350-61. [PMID: 23582047 DOI: 10.1111/apha.12105] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 11/15/2012] [Accepted: 04/04/2013] [Indexed: 12/14/2022]
Abstract
AIM To investigate an interaction between the calcium and sulphide signalling pathways, particularly effects of the slow H2 S release donor morpholin-4-ium-4-methoxyphenyl-(morpholino)-phosphinodithioate (GYY4137) on the expression of inositol 1,4,5-trisphosphate receptors (IP3 R) with the possible impact on the apoptosis induction in HeLa cells. METHODS Gene expression, Western blot analysis, apoptosis determination by Annexin-V-FLUOS and drop in mitochondrial membrane potential by 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyanine iodide (JC1) and immunofluorescence were used to determine differences in control and GYY4137-treated HeLa cells. RESULTS In HeLa cell line, GYY4137 (10 μm) up-regulated expression of the IP3 R1 and IP3 R2, but not IP3 R3 on both mRNA and protein levels. Concurrently, cytosolic calcium increased and reticular calcium was depleted in concentration-dependent manner, partially by the involvement of IP3 R. Depletion of calcium from reticulum was accompanied by increase in endoplasmic reticulum (ER) stress markers, such as X-box, CHOP and ATF4, thus pointing to the development of ER stress due to GYY4137 treatment. Also, GYY4137 treatment of HeLa cells increased the number of apoptotic cells. CONCLUSION These results suggest an involvement of H2 S in both IP3 -induced calcium signalling and induction of apoptosis, possibly through the activation of ER stress.
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Whiteman M, Tepper N, Kottke M, Goedken P, Marchbanks P, Curtis K. Use of a checklist to rule out pregnancy in teens. Contraception 2013. [DOI: 10.1016/j.contraception.2013.04.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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99
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Eggleton P, Nissim A, Ryan BJ, Whiteman M, Winyard PG. Detection and isolation of human serum autoantibodies that recognize oxidatively modified autoantigens. Free Radic Biol Med 2013; 57:79-91. [PMID: 23246567 DOI: 10.1016/j.freeradbiomed.2012.11.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 10/05/2012] [Accepted: 11/10/2012] [Indexed: 12/13/2022]
Abstract
The breakdown of human immune tolerance to self-proteins occurs by a number of mechanisms, including posttranslational modifications of host molecules by reactive oxygen, nitrogen, or chlorine species. This has led to great interest in detecting serum autoantibodies raised against small quantities of oxidatively modified host proteins in patients with autoimmune inflammatory diseases, such as rheumatoid arthritis. Here, we provide protocols for the preparation and chemical characterization of oxidatively modified protein antigens and procedures for their use in immunoblotting and ELISAs that detect autoantibodies against these antigens in clinical samples. These gel electrophoresis- and plate reader-based immunochemical methods sometimes suffer from low analytical specificity and/or sensitivity when used for serum autoantibody detection. This is often because a single solid-phase protein (antigen) is exposed to a complex mixture of serum proteins that undergo nonspecific binding. Therefore more sensitive/specific techniques are required to detect autoantibodies specifically directed against oxidatively modified proteins. To address this, we describe novel affinity chromatography protocols by which purified autoantibodies are isolated from small volumes (<1 ml) of serum. We have also developed strategies to conjugate submilligram amounts of isolated immunoglobulins and other proteins to fluorophores. This set of methods will help facilitate the discovery of novel diagnostic autoantibodies in patients.
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100
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Li L, Fox B, Keeble J, Salto-Tellez M, Winyard PG, Wood ME, Moore PK, Whiteman M. The complex effects of the slow-releasing hydrogen sulfide donor GYY4137 in a model of acute joint inflammation and in human cartilage cells. J Cell Mol Med 2013; 17:365-76. [PMID: 23356870 PMCID: PMC3823018 DOI: 10.1111/jcmm.12016] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Accepted: 12/04/2012] [Indexed: 01/01/2023] Open
Abstract
The role of hydrogen sulfide (H2S) in inflammation remains unclear with both pro- and anti-inflammatory actions of this gas described. We have now assessed the effect of GYY4137 (a slow-releasing H2S donor) on lipopolysaccharide (LPS)-evoked release of inflammatory mediators from human synoviocytes (HFLS) and articular chondrocytes (HAC) in vitro. We have also examined the effect of GYY4137 in a complete Freund's adjuvant (CFA) model of acute joint inflammation in the mouse. GYY4137 (0.1–0.5 mM) decreased LPS-induced production of nitrite (NO2−), PGE2, TNF-α and IL-6 from HFLS and HAC, reduced the levels and catalytic activity of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) and reduced LPS-induced NF-κB activation in vitro. Using recombinant human enzymes, GYY4137 inhibited the activity of COX-2, iNOS and TNF-α converting enzyme (TACE). In the CFA-treated mouse, GYY4137 (50 mg/kg, i.p.) injected 1 hr prior to CFA increased knee joint swelling while an anti-inflammatory effect, as demonstrated by reduced synovial fluid myeloperoxidase (MPO) and N-acetyl-β-D-glucosaminidase (NAG) activity and decreased TNF-α, IL-1β, IL-6 and IL-8 concentration, was apparent when GYY4137 was injected 6 hrs after CFA. GYY4137 was also anti-inflammatory when given 18 hrs after CFA. Thus, although GYY4137 consistently reduced the generation of pro-inflammatory mediators from human joint cells in vitro, its effect on acute joint inflammation in vivo depended on the timing of administration.
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