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Akinrinde AS, Fapuro J, Soetan KO. Zinc and ascorbic acid treatment alleviates systemic inflammation and gastrointestinal and renal oxidative stress induced by sodium azide in rats. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2021. [DOI: 10.1186/s43088-021-00108-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Sodium azide (NaN3) is a chemical of rapidly increasing economic importance but with high toxic attributes. In this study, the effects of zinc (Zn) and ascorbic acid (AsA) supplementation on sodium azide (NaN3)-induced toxicity in the stomach, colon and kidneys were evaluated in Wistar rats. Twenty-eight rats were randomly allocated to four experimental groups as follows: group A (control) given distilled water only; group B (NaN3 only, 20 mg/kg); group C (NaN3 + zinc sulphate, ZnSO4 80 mg/kg); and group D (NaN3 + AsA 200 mg/kg).
Results
NaN3 was found to significantly (p < 0.05) induce increases in serum nitric oxide (NO), advanced oxidation protein products (AOPP), myeloperoxidase (MPO) and total protein levels, along with significant (p < 0.05) increase in gastric, colonic and renal malondialdehyde (MDA) and protein carbonyl (PCO) levels. In addition, NaN3 induced significant (p < 0.05) reduction in superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione S-transferase (GST) activities in the colon and kidneys. Treatment with Zn or AsA caused significant (p < 0.05) reduction in serum levels of oxidative and inflammatory markers, as well as tissue PCO and MDA levels. Moreover, co-treatment with Zn or AsA significantly (p < 0.05) restored colonic and renal levels of antioxidant enzymes, reduced glutathione and protein thiols.
Conclusions
This study shows that Zn or AsA supplementation alleviated NaN3 toxicity by suppressing systemic inflammation and preventing oxidative damage in the stomach, colon and kidneys of rats.
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Enhancement of corneal epithelium cell survival, proliferation and migration by red light: Relevance to corneal wound healing. Exp Eye Res 2019; 180:231-241. [DOI: 10.1016/j.exer.2019.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/13/2018] [Accepted: 01/02/2019] [Indexed: 02/04/2023]
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Núñez-Álvarez C, Suárez-Barrio C, del Olmo Aguado S, Osborne NN. Blue light negatively affects the survival of ARPE19 cells through an action on their mitochondria and blunted by red light. Acta Ophthalmol 2019; 97:e103-e115. [PMID: 30198155 DOI: 10.1111/aos.13812] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/08/2018] [Indexed: 12/18/2022]
Abstract
PURPOSE To ascertain whether red light, known to enhance mitochondrial function, can blunt a blue light insult to ARPE19 cells in culture. METHODS Semi-confluent ARPE19 cells cultured in 10% FBS were subjected to various regimes of treatment with blue (465-475 nm, 800 lux, 26 W/m2 ) and red (625-635 nm, 950 lux, 6.5 W/m2 ) light, as well as with toxins that inactivate specific enzymes associated with mitochondrial oxidative phosphorylation. Cultures were then analysed for cell viability (MTT assay), mitochondrial status (JC-1), ROS formation, immunocytochemistry and the activation of specific proteins by electrophoresis/Western blotting. In addition, ARPE19 cells were cultured in polycarbonate membrane inserts in culture medium containing 1% FBS. Such cultures were exposed to cycles of red, blue or a combination of red and blue light for up to 6 weeks. Culture medium was changed and the trans-epithelium membrane resistance (TER) of the inserts-containing cells was measured twice weekly. RESULTS ARPE19 cells in culture are affected negatively when exposed to blue light. This is indicated by a loss of viability, a depolarization of their mitochondria and a stimulation of ROS. Moreover, blue light causes an up-regulation of HO-1 and phospho-p-38-MAPK and a cleavage of apoptosis inhibitory factor, proteins which are all known to be activated during cell death. All of these negative effects of blue light are significantly blunted by the red light administered after the blue light insult in each case. ARPE19 cell loss of viability and mitochondrial potential caused by toxins that inhibit specific mitochondrial enzyme complexes was additive to an insult delivered by blue light in each case. After a time, ARPE19 cells in culture express the tight junction protein ZO-1, which is affected by blue light. The development of tight junctions between ARPE19 cells grown in inserts reached a steady peak of resistance after about 40 days and then increased very slightly over the next 40 days when still in darkness. However, maximum resistance was significantly attenuated, when cultures were treated with cycles of blue light after the initial 40 days in the dark and counteracted significantly when the blue light cycle insult was combined with red light. CONCLUSION Blue light affects mitochondrial function and also the development tight junctions between ARPE19 cells, which results in a loss of cell viability. Importantly, red light delivered after a blue light insult is significantly blunted. These findings argue for the therapeutic use of red light as a noninvasive procedure to attenuate insults caused by blue light and other insults to retinal pigment epithelial cell mitochondria that are likely to occur in age-related macular degeneration.
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Xu X, Luo C, Zhang Z, Hu J, Gao X, Zuo Y, Wang Y, Zhu S. Mdivi‑1 attenuates sodium azide‑induced apoptosis in H9c2 cardiac muscle cells. Mol Med Rep 2017; 16:5972-5978. [PMID: 28849092 PMCID: PMC5865776 DOI: 10.3892/mmr.2017.7359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 06/16/2017] [Indexed: 01/02/2023] Open
Abstract
The aim of the current study was to investigate the effect of mitochondrial division inhibitor 1 (Mdivi-1) in sodium azide-induced cell death in H9c2 cardiac muscle cells. Mdivi-1 is a key inhibitor of the mitochondrial division protein dynamin-related protein 1 (Drp1). Mdivi-1 was added to H9c2 cells for 3 h, after which, the cells were treated with sodium azide for 24 h. Cell viability was measured by Cell Counting kit-8 assay. DAPI staining was used to observe nuclear morphology changes by microscopy. To further investigate the role of mitochondria in sodium azide-induced cell death, mitochondrial membrane potential (ΔΨm) and the cellular ATP content were determined by JC-1 staining and ATP-dependent bioluminescence assay, respectively. Reactive oxygen species (ROS) production was also assessed by use of the specific probe 2′,7′-dichlorodihydrofluorescein diacetate. In addition, the expression of Drp1 and of the apoptosis-related proteins BCL2 apoptosis regulator (Bcl-2), and BCL2 associated X (Bax) was determined by western blotting. The present findings demonstrated that pretreatment with Mdivi-1 attenuated sodium azide-induced H9c2 cell death. Mdivi-1 pretreatment also inhibited the sodium azide-induced downregulation of Bcl-2 expression and upregulation of Bax and Drp1 expression. In addition, the mitochondrion was revealed to be the target organelle of sodium azide-induced toxicity in H9c2 cells. Mdivi-1 pretreatment moderated the dissipation of ΔΨm, preserved the cellular ATP contents and suppressed the production of ROS. The results suggested that the mechanism of sodium azide-induced cell death in H9c2 cells may involve the mitochondria-dependent apoptotic pathway. The present results indicated that Mdivi-1 may have a cardioprotective effect against sodium azide-induced apoptosis in H9c2 cardiac muscle cells.
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Affiliation(s)
- Xuehua Xu
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Chengliang Luo
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Zhixiang Zhang
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Jun Hu
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Xiangting Gao
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Yuanyi Zuo
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Yun Wang
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Shaohua Zhu
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
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Ameliorative effect of vitamin E and selenium against oxidative stress induced by sodium azide in liver, kidney, testis and heart of male mice. Biomed Pharmacother 2017; 91:602-610. [PMID: 28494416 DOI: 10.1016/j.biopha.2017.04.122] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/18/2017] [Accepted: 04/27/2017] [Indexed: 01/26/2023] Open
Abstract
The study purported to define the effects of daily administration of vitamin E (Vit E) and selenium (Se) on antioxidant enzyme activity in mice treated with high doses of sodium azide (SA). Male mice were randomly split into nine groups. Groups 1, 2 and 3 were injected daily with saline, Vit E, and Se, respectively, while groups 4, 5 and 6 administrated with different doses of SA (low, medium and high, respectively). The mice in groups 7, 8 and 9 received 100mg/kg Vit E, 17.5mg/kg Se, and a combination of Vit E and Se, respectively before the SA-treatment. Hepatic, renal, testis and heart, antioxidant enzymes as well as levels of lipid peroxidation and total antioxidant capacity levels were determined. Vit E alone affected on the antioxidant parameters of the examined tissues. Se had a preventive effect on the decrease of antioxidant parameters caused by SA and improved the diminished activities of all of them. The study demonstrates that a high dose of SA may alter the effects of normal level antioxidant/oxidative status of male mice and that Se is effective in reducing the SA-damage. Se acts as a synergistic agent with the effect of Vit E in various damaged caused by SA.
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Sodium azide suppresses LPS-induced expression MCP-1 through regulating IκBζ and STAT1 activities in macrophages. Cell Immunol 2017; 315:64-70. [PMID: 28391993 DOI: 10.1016/j.cellimm.2017.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 02/22/2017] [Accepted: 02/27/2017] [Indexed: 01/12/2023]
Abstract
Sodium azide (NaN3) is a chemical compound with multiple toxic effects on vascular and neuronal systems, causing hypotension and neurotoxicity, respectively. In order to test its effects on the immune system, human and mouse macrophage-like cell lines were treated with nontoxic doses of NaN3 and the changes in LPS-induced inflammatory activation was measured. Interestingly, the LPS-induced expression of monocyte chemoattractant protein (MCP)-1 was suppressed by NaN3 without affecting the expression of IL-8 and TNF-α. Further analysis of cellular signaling mediators involved in the expression of these cytokines revealed that NaN3 suppressed the LPS-induced activation of signal transducers and activator of transcription (STAT)1 and inhibitor of κB (IκB) ς, which are involved in the LPS-induced expression of MCP-1, while the LPS-induced activation of nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) was not affected. The LPS-induced expression of MCP-2 and CXCL10, which are also regulated by STAT1, was suppressed by NaN3. Similarly, the LPS-induced expression of IL-6, which is regulated by IκBζ, was suppressed by NaN3. These results demonstrate that NaN3 selectively suppresses the LPS-induced expression of pro-inflammatory mediators through the suppression of STAT1 and IκBζ activation. These new findings about the activity of NaN3 may contribute to the development of specific regulators of macrophage activity during acute and chronic inflammation.
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El-Shenawy NS, AL-Harbi MS, Hamza RZ. Effect of vitamin E and selenium separately and in combination on biochemical, immunological and histological changes induced by sodium azide in male mice. ACTA ACUST UNITED AC 2015; 67:65-76. [DOI: 10.1016/j.etp.2014.10.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 09/27/2014] [Accepted: 10/24/2014] [Indexed: 01/20/2023]
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Temperature increase exacerbates apoptotic neuronal death in chemically-induced ischemia. PLoS One 2013; 8:e68796. [PMID: 23861942 PMCID: PMC3704595 DOI: 10.1371/journal.pone.0068796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 06/05/2013] [Indexed: 12/30/2022] Open
Abstract
It is well-established that hyperthermia increases neuronal death and worsens stroke outcome. However, little is known about the mechanisms of how hyperthermia is involved in this neuronal death process. In the present study, we examined how temperature increase exacerbates neuronal death using a model of chemical ischemia. Chemical ischemia was induced by treating SH-SY5Y neuroblastoma cells with sodium azide and deoxyglucose. Temperature increase was treated by placing the cells at 37°C (control) and 41°C (experimental). Cell survival was determined by trypan blue assay and ATP levels were measured with ATP assay kits. Protein expression was detected by western blot. Treatment with sodium azide resulted in cell death in a dose-responsive manner. Increased temperature worsened the ATP depletion and cell volume shrinkage. Temperature increase also enhanced ER stress as demonstrated by the elevated level of phospho-eIF2α and C/EBP homologous protein (CHOP). Inhibition of CHOP expression significantly decreased sodium azide-induced neuronal death. In addition, the increased temperature intensified the activation of caspase-3, an apoptotic effector protease, and inhibition of capspase-3 significantly reduced cell death. These findings support that temperature increase worsened the neuronal death by depleting intracellular ATP, inducing ER stress response and activating apoptotic signal transduction.
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Ji D, Kamalden TA, del Olmo-Aguado S, Osborne NN. Light- and sodium azide-induced death of RGC-5 cells in culture occurs via different mechanisms. Apoptosis 2011; 16:425-37. [DOI: 10.1007/s10495-011-0574-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Maternal and developmental toxicity study of sodium azide in rats. Regul Toxicol Pharmacol 2008; 52:158-62. [PMID: 18755233 DOI: 10.1016/j.yrtph.2008.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 08/02/2008] [Accepted: 08/05/2008] [Indexed: 11/24/2022]
Abstract
Sodium azide (NaN(3)) is being proposed for use as an active ingredient to control a broad spectrum of soil borne pathogens including insects, weeds, nematodes, fungi, and bacteria. The purpose of this study was to determine the maternal and developmental toxicity of NaN(3) in rats. Sperm-positive Sprague-Dawley rats were treated with NaN(3) via oral gavage once daily from Gestation Day (GD) 6 through 19 at respective dose levels of 0, 1, 5, and 17.5mg/kg/day. From GD 10-12, the high-dose was reduced to 10mg/kg/day due to maternal mortality. Cesarean section was performed on GD 20 and implantation and resorptions sites, live and dead fetuses were counted. Fetuses were weighed, sexed externally and processed for gross external, visceral and skeletal examinations. A high rate of maternal mortality; reduced gestation body weight, gestation body weight changes and food consumption; decreased corrected body weight and corrected weight gain were observed at 17.5/10mg/kg/day. Fetal weight was also reduced at 17.5/10mg/kg/day. There were no maternal deaths, clinical signs or body weight effects that were considered related to NaN(3) at 1 and 5mg/kg/day. No increase in the incidence of malformations and variations were observed at any of the doses evaluated. Based on the results of this study, the No Observed Adverse Effect Level (NOAEL) and the Lowest Observed Adverse Effect Level (LOAEL) for maternal and developmental toxicity of NaN(3) in rats were considered to be 5 and 17.5/10mg/kg/day, respectively.
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Russo I, Del Mese P, Viretto M, Doronzo G, Mattiello L, Trovati M, Anfossi G. Sodium azide, a bacteriostatic preservative contained in commercially available laboratory reagents, influences the responses of human platelets via the cGMP/PKG/VASP pathway. Clin Biochem 2007; 41:343-9. [PMID: 18022387 DOI: 10.1016/j.clinbiochem.2007.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Revised: 09/27/2007] [Accepted: 10/24/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The bacteriostatic preservative sodium azide (NaN(3)) activates soluble guanylate cyclase (sGC) in vascular tissues, thus elevating cellular 3',5'-cyclic guanosine monophosphate (cGMP). Because the sGC/cGMP pathway is involved in the control of platelet aggregation, we investigated whether in human platelets NaN(3) influences the responses to agonists, cGMP levels and cGMP-regulated pathways. DESIGN AND METHOD Concentration- and time-dependent effects of NaN(3) (1-100 micromol/L; 5-60 min incubation) on ADP- and collagen-induced aggregation, NO synthase (NOS) activity, cGMP synthesis and vasodilator-stimulated phosphoprotein (VASP) phosphorylation at Ser239 were investigated in platelets from 21 healthy individuals. RESULTS NaN(3) exerted concentration- and time-dependent antiaggregatory effects starting from 1 micromol/L (IC(50) with 5-min incubation: 2.77+/-0.35 micromol/L with ADP and 4.64+/-0.48 micromol/L with collagen) and significantly increased intraplatelet cGMP levels and phosphorylation of VASP at Ser239 at 1-100 micromol/L; these effects were prevented by sGC inhibition, but not by NOS inhibition. CONCLUSIONS NaN(3) exerts antiaggregatory effects in human platelets via activation of the sGC/cGMP/VASP pathway. This biological effect must be considered when azide-containing reagents are used for in vitro studies on platelet function.
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Affiliation(s)
- Isabella Russo
- Diabetes Unit, Department of Clinical and Biological Sciences of The University of Turin, San Luigi Gonzaga Hospital, Orbassano (Turin), Italy
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Marino S, Marani L, Nazzaro C, Beani L, Siniscalchi A. Mechanisms of sodium azide-induced changes in intracellular calcium concentration in rat primary cortical neurons. Neurotoxicology 2007; 28:622-9. [PMID: 17316809 DOI: 10.1016/j.neuro.2007.01.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2006] [Revised: 11/21/2006] [Accepted: 01/15/2007] [Indexed: 11/28/2022]
Abstract
An intracellular calcium ([Ca(2+)](i)) increase is involved in sodium azide (NaN(3))-induced neurotoxicity, an in vitro model of brain ischemia. In this study the questions of possible additional sources of calcium influx, besides glutamate receptor activation, and of the time-course of NaN(3) effects have been addressed by measuring [Ca(2+)](i) in rat primary cortical cultures with the FURA-2 method. Basal [Ca(2+)](i) of neuronal populations was concentration-dependently increased 30 min, but not 24h, after a 10-min NaN(3) (3-30 mM) treatment; conversely, the net increase induced by electrical stimulation (10Hz, 10s) was consistently reduced. All the above effects depended on glutamate release and consequent NMDA receptor activation, since the NMDA antagonist MK-801 (1 microM) prevented them, and the spontaneous efflux of [(3)H]-d-aspartate from superfused neurons was concentration-dependently increased by NaN(3). In single neuronal cells, NaN(3) application progressively and concentration-dependently increased [Ca(2+)](i) (to 177+/-5% and 249+/-7% of the controls, 4 and 12 min after a 10mM-treatment, respectively). EGTA (5mM) pretreatment reduced the effect of 10mM NaN(3) (to 118+/-5% at 4 min, and to 148+/-10% at 12 min, respectively), while 1 microM cyclosporin A did not. Both MK-801 and CNQX (a non-NMDA glutamate antagonist, 10 microM) prevented NaN(3) effect at 4 min (to 147+/-8% and 153+/-5%, respectively), but not at 12 min after NaN(3) treatment. Conversely, 10 microM verapamil and 0.1 microM omega-conotoxin (L- and N-type calcium channel blockers, respectively) significantly attenuated NaN(3) effects at 12 min (to 198+/-8% and 164+/-5%, respectively), but not at 4 min; the P/Q-type calcium channel blocker, agatoxin, 0.3 microM, was ineffective. These findings show that the predominant source of calcium increase induced by NaN(3) is extracellular, involving glutamate receptor activation in a first step and calcium channel (mainly of the N-type) opening in a second step.
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Affiliation(s)
- Silvia Marino
- Department of Clinical and Experimental Medicine, Section of Pharmacology, University of Ferrara, Via Fossato di Mortara 17-19, 44100 Ferrara, Italy
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Bowler MW, Montgomery MG, Leslie AGW, Walker JE. How azide inhibits ATP hydrolysis by the F-ATPases. Proc Natl Acad Sci U S A 2006; 103:8646-9. [PMID: 16728506 PMCID: PMC1469772 DOI: 10.1073/pnas.0602915103] [Citation(s) in RCA: 181] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the structure of bovine F1-ATPase determined at 1.95-A resolution with crystals grown in the presence of ADP, 5'-adenylyl-imidodiphosphate, and azide, the azide anion interacts with the beta-phosphate of ADP and with residues in the ADP-binding catalytic subunit, betaDP. It occupies a position between the catalytically essential amino acids, beta-Lys-162 in the P loop and the "arginine finger" residue, alpha-Arg-373, similar to the site occupied by the gamma-phosphate in the ATP-binding subunit, betaTP. Its presence in the betaDP-subunit tightens the binding of the side chains to the nucleotide, enhancing its affinity and thereby stabilizing the state with bound ADP. This mechanism of inhibition appears to be common to many other ATPases, including ABC transporters, SecA, and DNA topoisomerase IIalpha. It also explains the stimulatory effect of azide on ATP-sensitive potassium channels by enhancing the binding of ADP.
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Affiliation(s)
- Matthew W. Bowler
- *Dunn Human Nutrition Unit, Medical Research Council, Hills Road, Cambridge CB2 2XY, United Kingdom; and
| | - Martin G. Montgomery
- *Dunn Human Nutrition Unit, Medical Research Council, Hills Road, Cambridge CB2 2XY, United Kingdom; and
| | - Andrew G. W. Leslie
- Laboratory of Molecular Biology, Medical Research Council, Hills Road, Cambridge CB2 2QH, United Kingdom
| | - John E. Walker
- *Dunn Human Nutrition Unit, Medical Research Council, Hills Road, Cambridge CB2 2XY, United Kingdom; and
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