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Castilla R, Ruffa FV, Bancalari I, Fernández Vivanco M, Lallopizzo C, Torasso N, Farcy N, Gutierrez C, Bonazzolaa P. Cobalt chloride postconditioning as myoprotective therapy in cardiac ischemia-reperfusion. Pflugers Arch 2022; 474:743-752. [PMID: 35585327 DOI: 10.1007/s00424-022-02703-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/11/2022] [Accepted: 05/03/2022] [Indexed: 11/24/2022]
Abstract
Since damage induced by ischemia-reperfusion (I/R) involves alterations in Ca2+ homeostasis and is reduced by ischemic postconditioning (IP) and that CoCl2 can trigger changes resembling the response to a hypoxic event in normoxia and its blockade on Ca2+ current in heart muscle, our aim was to evaluate CoCl2 as an IP therapeutic tool. Mechanic and energetic parameters of isolated and arterially perfused male Wistar rat heart ventricles were simultaneously analyzed in a model of I/R in which 0.23 mmol/L CoCl2 was introduced upon reperfusion and kept or withdrawn after 20 min or introduced after 20 min of reperfusion. The presence of CoCl2 did not affect diastolic pressure but increased post-ischemic contractile recovery, which peaked at 20 min and decreased at the end of reperfusion. This decrease was prevented when CoCl2 was removed at 20 min of reperfusion. Total heat release increased throughout reperfusion, while economy increased between 15 and 25 min. No effect was observed when CoCl2 was introduced at 20 min of reperfusion. In addition, both the area under the contracture curve evoked by 10 mmol/L caffeine-36 mmol/L Na+ and the contracture tension relaxation rate were higher with CoCl2.Furthermore, CoCl2 decreased the number of arrhythmias during reperfusion and the ventricular damaged area. The presence of CoCl2 in reperfusion induces cardioprotection consistent with the improvement in cellular calcium handling. The use of CoCl2 constitutes a potential cardioprotective tool of clinical relevance.
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Affiliation(s)
- Rocío Castilla
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina.
| | - Facundo Vigón Ruffa
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Ignacio Bancalari
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Mercedes Fernández Vivanco
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Carla Lallopizzo
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Nicolás Torasso
- Facultad de Ciencias Exactas Y Naturales, Instituto de Física de Buenos Aires (IFIBA-CONICET), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Nicole Farcy
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Christopher Gutierrez
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
| | - Patricia Bonazzolaa
- CONICET, Instituto Alberto C Taquini de Investigaciones en Medicina Traslacional (IATIMET) C1122AAJ, Universidad de Buenos Aires, Marcelo T. de Alvear, 2270- C1122AAJ, Buenos Aires, Argentina
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Movassaghi K, Patel A, Miller I, Levine BR. An Atypical Adverse Local Tissue Reaction After Ceramic-on-Ceramic Primary Total Hip Arthroplasty. Arthroplast Today 2022; 14:71-75. [PMID: 35252509 PMCID: PMC8889265 DOI: 10.1016/j.artd.2022.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/11/2021] [Accepted: 01/15/2022] [Indexed: 11/14/2022] Open
Abstract
Adverse local tissue reaction is an uncommon but frequently described complication after total hip arthroplasty (THA). It is most often associated with metal-on-metal hips and less frequently with metal-on-polyethylene implants as part of a mechanically assisted crevice corrosion process. In this report, we describe a rare case of an atypical adverse local tissue reaction in a patient with a ceramic-on-ceramic THA. Abrasive backside liner wear from a prominent screw head, failure of the liner locking mechanism, and liner fragmentation secondary to component-component impingement created an atypical mass and fluid collection leading to THA failure. This case demonstrates the importance of appropriate cup-liner positioning, thorough workup of pain after THA, and the ability of ceramic debris to cause an associated, atypical adverse local tissue reaction.
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Mechanisms of Co, Ni, and Mn toxicity: From exposure and homeostasis to their interactions with and impact on lipids and biomembranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183250. [DOI: 10.1016/j.bbamem.2020.183250] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/12/2020] [Accepted: 02/24/2020] [Indexed: 01/21/2023]
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Eltit F, Wang Q, Wang R. Mechanisms of Adverse Local Tissue Reactions to Hip Implants. Front Bioeng Biotechnol 2019; 7:176. [PMID: 31417898 PMCID: PMC6683860 DOI: 10.3389/fbioe.2019.00176] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/08/2019] [Indexed: 12/11/2022] Open
Abstract
Adverse Local Tissue Reactions (ALTRs) are one of the main causes of hip implant failures. Although the metal release from the implants is considered as a main etiology, the mechanisms, and the roles of the released products are topics of ongoing research. The alloys used in the hip implants are considered biocompatible and show negligible corrosion in the body environment under static conditions. However, modularity and its associated mechanically assisted corrosion have been shown to release metal species into the body fluids. ALTRs associated with metal release have been observed in hip implants with metal-on-metal articulation initially, and later with metal-on-polyethylene articulation, the most commonly used design in current hip replacement. The etiological factors in ALTRs have been the topics of many studies. One commonly accepted theory is that the interactions between the metal species and body proteins and cells generate a delayed type IV hypersensitivity reaction leading to ALTRs. However, lymphocyte reactions are not always observed in ALTRS, and the molecular mechanisms have not been clearly demonstrated. A more accepted mechanism is that cell damage generated by metal ions may trigger the secretion of cytokines leading to the inflammatory reactions observed in ALTRs. In this inflammatory environment, some patients would develop hypersensitivity that is associated with poor outcomes. Concerns over ALTRS have brought significant impact to both the clinical selection and development of hip implants. This review is focused on the mechanisms of ALTRs, specifically, the metal release process and the roles of the metal species released in the etiology and pathogenesis of the disease. Hopefully, our presentation and discussion of this biological process from a material perspective could improve our current understanding on the ALTRs and provide useful guidance in developing preventive solutions.
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Affiliation(s)
- Felipe Eltit
- Department of Materials Engineering, University of British Columba, Vancouver, BC, Canada.,School of Biomedical Engineering, University of British Columba, Vancouver, BC, Canada.,Centre for Hip Health and Mobility, Vancouver, BC, Canada
| | - Qiong Wang
- Department of Materials Engineering, University of British Columba, Vancouver, BC, Canada.,School of Biomedical Engineering, University of British Columba, Vancouver, BC, Canada.,Centre for Hip Health and Mobility, Vancouver, BC, Canada
| | - Rizhi Wang
- Department of Materials Engineering, University of British Columba, Vancouver, BC, Canada.,School of Biomedical Engineering, University of British Columba, Vancouver, BC, Canada.,Centre for Hip Health and Mobility, Vancouver, BC, Canada
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Kurhaluk N, Lukash O, Nosar V, Portnychenko A, Portnichenko V, Wszedybyl-Winklewska M, Winklewski PJ. Liver mitochondrial respiratory plasticity and oxygen uptake evoked by cobalt chloride in rats with low and high resistance to extreme hypobaric hypoxia. Can J Physiol Pharmacol 2019; 97:392-399. [PMID: 30681909 DOI: 10.1139/cjpp-2018-0642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
High-altitude intolerance and consequently high-altitude sickness, is difficult to predict. Liver is an essential organ in glucose and lipid metabolism, and may play key role in the adaptation to high altitude. In response to extreme high altitude, mitochondrial respiration exhibits changes in substrate metabolism, mitochondrial electron transport chain activity, and respiratory coupling. We determined the cobalt chloride (CoCl2) effects on liver mitochondrial plasticity and oxygen uptake in rats with low resistance (LR) and high resistance (HR) to extreme hypobaric hypoxia. The polarographic method proposed by Chance and Williams was used as a simple and effective tool to trace mitochondrial functionality and oxygen consumption. HR rats had more efficient processes of NADH- and FAD-generated mitochondrial oxidation. CoCl2 promoted more efficient NADH-generated and diminished less efficient FAD-generated mitochondrial respiratory reactions in HR rats. CoCl2 diminished both aerobic and anaerobic processes in LR rats. Glutamate and pyruvate substrates of NADH-generated mitochondrial pathways were highly affected by CoCl2. Red blood cells acted as cobalt depots in HR and LR rats. We have unveiled several mechanisms leading to differentiated mitochondrial respiratory responses to hypobaric hypoxia in LR and HR rats. Our study strongly supports the existence of adaptive liver mitochondrial plasticity to extreme hypoxia.
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Affiliation(s)
- Natalia Kurhaluk
- a Department of Physiology, Institute of Biology and Environment Protection, Pomeranian University of Slupsk, Słupsk, Poland
| | - Oleksaner Lukash
- b Department of Ecology and Nature Protection, T.G. Shevchenko National University "Chernihiv Colehium", Chernihiv, Ukraine
| | - Valentina Nosar
- c Department of Hypoxia, Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kiev, Ukraine; International Centre for Medical, Astronomical and Ecological Research, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Alla Portnychenko
- c Department of Hypoxia, Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kiev, Ukraine; International Centre for Medical, Astronomical and Ecological Research, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | - Volodymyr Portnichenko
- c Department of Hypoxia, Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kiev, Ukraine; International Centre for Medical, Astronomical and Ecological Research, National Academy of Sciences of Ukraine, Kiev, Ukraine
| | | | - Pawel J Winklewski
- d Department of Human Physiology, Faculty of Health Sciences, Medical University of Gdansk, Gdansk, Poland.,e Department of Clinical Anatomy and Physiology, Faculty of Health Sciences, Pomeranian University of Slupsk, Slupsk, Poland
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Chamaon K, Schönfeld P, Awiszus F, Bertrand J, Lohmann CH. Ionic cobalt but not metal particles induces ROS generation in immune cells in vitro. J Biomed Mater Res B Appl Biomater 2018; 107:1246-1253. [PMID: 30261124 DOI: 10.1002/jbm.b.34217] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 12/25/2022]
Abstract
Total joint replacement is one of the most successful procedures in orthopedic surgery today. However, metal implant materials undergo wear and corrosion processes. Generated particles and ions can cause a variety of cellular reactions. Cobalt-containing alloys are used frequently in implant materials. Some studies suggest that cobalt exhibits potential cytotoxic effects, for example, via generation of reactive oxygen species (ROS). To further elucidate the effects of cobalt on human cells, we determined cell viability and cytosolic and mitochondrial superoxide formation after incubation of either ions or particles with different cells. MM-6 and Jurkat cell lines were treated for 24, 48 and 72 h with either CoCrMo particles or cobalt ions (supplied as CoCl2 ). A total of 24 h exposure of both forms of cobalt did not induce cell death using terminal deoxynucleotidyl transferase (TUNEL) and trypan blue assay. Interestingly, the formation of superoxide (O2 .- ) is evoked mainly by ionic CoCl2 but not cobalt particles. Cobalt alloy particles are likely to even suppress O2 .- formation in mitochondria in both used cell lines. Furthermore, we did not observe any effect of cobalt particles on O2 .- formation in peripheral blood mononuclear cells (PBMCs) from healthy donors. We also found that the O2 - formation by CoCl2 within mitochondria is a generalized effect for all cell types used, while the formation of superoxide in cytosolic compartment is cell-type dependent. In summary, our data suggest that cobalt ions specifically induce the formation of O2 .- , whereas the cobalt particles were better tolerated. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1246-1253, 2019.
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Affiliation(s)
- Kathrin Chamaon
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Peter Schönfeld
- Institute for Biochemistry and Cell Biology, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Friedemann Awiszus
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Jessica Bertrand
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Christoph H Lohmann
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
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Cobalt inhibits motility of axonal mitochondria and induces axonal degeneration in cultured dorsal root ganglion cells of rat. Cell Biol Toxicol 2017; 34:93-107. [PMID: 28656345 DOI: 10.1007/s10565-017-9402-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 06/15/2017] [Indexed: 10/19/2022]
Abstract
Cobalt is a trace element that localizes in the human body as cobalamin, also known as vitamin B12. Excessive cobalt exposure induces a peripheral neuropathy, the mechanisms of which are yet to be elucidated. We investigated how cobalt may affect mitochondrial motility in primary cultures of rat dorsal root ganglion (DRG). We observed mitochondrial motility by time-lapse imaging after DsRed2 tagging via lentivirus, mitochondrial structure using transmission electron microscopy (TEM), and axonal swelling using immunocytochemical staining. The concentration of cobaltous ion (Co2+) required to significantly suppress mitochondrial motility is lower than that required to induce axonal swelling following a 24-h treatment. Exposure to relatively low concentrations of Co2+ for 48 h suppressed mitochondrial motility without leading to axonal swelling. TEM images indicated that Co2+ induces mitochondrial destruction. Our results show that destruction of the axonal mitochondria precedes the axonal degeneration induced by Co2+ exposure.
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Korotkov S, Konovalova S, Emelyanova L, Brailovskaya I. Y3+, La3+, and some bivalent metals inhibited the opening of the Tl+-induced permeability transition pore in Ca2+-loaded rat liver mitochondria. J Inorg Biochem 2014; 141:1-9. [PMID: 25172992 DOI: 10.1016/j.jinorgbio.2014.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/05/2014] [Accepted: 08/07/2014] [Indexed: 11/18/2022]
Abstract
We showed earlier that diminution of 2,4-dinitrophenol (DNP)-stimulated respiration and increase of both mitochondrial swelling and electrochemical potential (ΔΨmito) dissipation in medium containing TlNO3 and KNO3 were caused by opening of Tl(+)-induced mitochondrial permeability transition pore (MPTP) in the inner membrane of Ca(2+)-loaded rat liver mitochondria. The MPTP opening was studied in the presence of bivalent metal ions (Sr(2+), Ba(2+), Mn(2+), Co(2+) and Ni(2+)), trivalent metal ions (Y(3+) and La(3+)), and ruthenium red. We found that these metal ions (except Ba(2+) and Co(2+)) as well as ruthenium red inhibited to the MPTP opening that manifested in preventing both diminution of the DNP-stimulated respiration and increase of the swelling and of the ΔΨmito dissipation in medium containing TlNO3, KNO3, and Ca(2+). Inhibition of the MPTP opening by Sr(2+) and Mn(2+) is suggested because of their interaction with high affinity Ca(2+) sites, facing the matrix side and participating in the MPTP opening. The inhibitory effects of metal ions (Y(3+), La(3+), and Ni(2+)), and ruthenium red are accordingly discussed in regard to competitive and noncompetitive inhibition of the mitochondrial Ca(2+)-uniporter. High concentrations (50μM) of Y(3+) and La(3+) favored of MPTP opening in the inner membrane of rat liver mitochondria in Ca(2+) free medium containing TlNO3. The latter MPTP opening was markedly eliminated by MPTP inhibitors (cyclosporine A and ADP).
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Affiliation(s)
- Sergey Korotkov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, the Russian Academy of Sciences, Thorez pr. 44, 194223 St. Petersburg, Russian Federation.
| | - Svetlana Konovalova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, the Russian Academy of Sciences, Thorez pr. 44, 194223 St. Petersburg, Russian Federation
| | - Larisa Emelyanova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, the Russian Academy of Sciences, Thorez pr. 44, 194223 St. Petersburg, Russian Federation
| | - Irina Brailovskaya
- Sechenov Institute of Evolutionary Physiology and Biochemistry, the Russian Academy of Sciences, Thorez pr. 44, 194223 St. Petersburg, Russian Federation
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Smith LJ, Holmes AL, Kandpal SK, Mason MD, Zheng T, Wise JP. The cytotoxicity and genotoxicity of soluble and particulate cobalt in human lung fibroblast cells. Toxicol Appl Pharmacol 2014; 278:259-65. [DOI: 10.1016/j.taap.2014.05.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 05/01/2014] [Accepted: 05/05/2014] [Indexed: 11/28/2022]
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10
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Mechanisms underlying interaction of zinc, lead, and cobalt with nonspecific permeability pores in the mitochondrial membranes. NEUROPHYSIOLOGY+ 2011. [DOI: 10.1007/s11062-011-9219-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Iero A, Manente S, De Pieri S, Mane E, Gallo M, Cima F, Ballarin L, Bragadin M. Interactions of Cr(VI) and Cr(III) with isolated rat liver mitochondria. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Greim H, Hartwig A, Reuter U, Richter-Reichhelm HB, Thielmann HW. Chemically induced pheochromocytomas in rats: mechanisms and relevance for human risk assessment. Crit Rev Toxicol 2010; 39:695-718. [PMID: 19743946 DOI: 10.1080/10408440903190861] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Pheochromocytomas are tumors originating from chromaffin cells of the adrenal medulla, which have been observed in numerous carcinogenicity studies. The authors have evaluated pheochromocytoma concurrence with other effects and the possible mechanisms, in order to assess the relevance of such data for the classification of carcinogenic effects and their relevance to humans. The evaluation revealed that pheochromocytomas occur with relatively higher frequency in male rats, especially when the following conditions are involved: hypoxia, uncoupling of oxidative phosphorylation, disturbance in calcium homeostasis, and disturbance of the hypothalamic endocrine axis. The underlying biochemical mechanisms suggest that other substances that interfere with these biochemical endpoints also produce pheochromocytomas. Such endpoints include enzymes involved in catecholamine synthesis, receptor tyrosine kinase (RET), hypoxia-inducible factor (HIF), succinate dehydrogenase, fumarate hydratase, and pyruvate dehydrogenase. To date, there is no indication that the substances inducing pheochromocytomas in animal experiments also induce corresponding tumors in humans. Because the mechanisms of action identified in rats are to be expected in humans, pheochromocytomas may be induced after exposure conditions similar to those used in the animal studies. Whether hereditary mutations represent a risk factor in humans is not clear. Pheochromocytomas that occur in animal experiments currently appear to have little relevance for conditions at the work place. When sufficiently documented and evaluated, such secondary pheochromocytomas are not relevant for classification and human risk assessment.
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Affiliation(s)
- Helmut Greim
- Institute of Toxicology and Environmental Hygiene, Technical University of Munich, Freising-Weihenstephan, Berlin, Germany.
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Cobalt induces oxidative stress in isolated liver mitochondria responsible for permeability transition and intrinsic apoptosis in hepatocyte primary cultures. Int J Biochem Cell Biol 2008; 41:586-94. [PMID: 18708157 DOI: 10.1016/j.biocel.2008.07.012] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 07/16/2008] [Accepted: 07/16/2008] [Indexed: 02/07/2023]
Abstract
It is well established that cobalt mediates the occurrence of oxidative stress which contributes to cell toxicity and death. However, the mechanisms of these effects are not fully understood. This investigation aimed at establishing if cobalt acts as an inducer of mitochondrial-mediated apoptosis and at clarifying the mechanism of this process. Cobalt, in the ionized species Co(2+), is able to induce the phenomenon of mitochondrial permeability transition (MPT) in rat liver mitochondria (RLM) with the opening of the transition pore. In fact, Co(2+) induces mitochondrial swelling, which is prevented by cyclosporin A and other typical MPT inhibitors such as Ca(2+) transport inhibitors and bongkrekic acid, as well as anti-oxidant agents. In parallel with mitochondrial swelling, Co(2+) also induces the collapse of electrical membrane potential. However in this case, cyclosporine A and the other MPT inhibitors (except ruthenium red and EGTA) only partially prevent DeltaPsi drop, suggesting that Co(2+) also has a proton leakage effect on the inner mitochondrial membrane. MPT induction is due to oxidative stress, as a result of generation by Co(2+) of the highly damaging hydroxyl radical, with the oxidation of sulfhydryl groups, glutathione and pyridine nucleotides. Co(2+) also induces the release of the pro-apoptotic factors, cytochrome c and AIF. Incubation of rat hepatocyte primary cultures with Co(2+) results in apoptosis induction with caspase activation and increased level of expression of HIF-1alpha. All these observations allow us to state that, in the presence of calcium, Co(2+) is an inducer of apoptosis triggered by mitochondrial oxidative stress.
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Kirin SI, Ott I, Gust R, Mier W, Weyhermüller T, Metzler-Nolte N. Cellular uptake quantification of metalated peptide and peptide nucleic acid bioconjugates by atomic absorption spectroscopy. Angew Chem Int Ed Engl 2008; 47:955-9. [PMID: 18092311 DOI: 10.1002/anie.200703994] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Srecko I Kirin
- Department of Chemistry and Biochemistry, University of Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
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Kirin S, Ott I, Gust R, Mier W, Weyhermüller T, Metzler-Nolte N. Quantifizierung der Zellaufnahme metallierter Peptide und Peptidnucleinsäuren durch Atomabsorptionsspektroskopie. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703994] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Victor EG, Zanette F, Aguiar MR, Aguiar CS, Cardoso DC, Cristiano MP, Streck EL, Paula MMS. Effect of ruthenium complexes on the activities of succinate dehydrogenase and cytochrome oxidase. Chem Biol Interact 2007; 170:59-66. [PMID: 17707358 DOI: 10.1016/j.cbi.2007.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2007] [Revised: 07/04/2007] [Accepted: 07/05/2007] [Indexed: 11/17/2022]
Abstract
In this article, we report the effects of acute administration of ruthenium complexes, trans-[RuCl(2)(nic)(4)] (nic=3-pyridinecarboxylic acid) 180.7 micromol/kg (complex I), trans-[RuCl(2)(i-nic)(4)] (i-nic=4-pyridinecarboxylic acid) 13.6 micromol/kg (complex II), trans-[RuCl(2)(dinic)(4)] (dinic=3,5-pyridinedicarboxylic acid) 180.7 micromol/kg (complex III) and trans-[RuCl(2)(i-dinic)(4)]Cl (i-dinic=3,4-pyridinedicarboxylic acid) 180.7 micromol/kg (complex IV) on succinate dehydrogenase (SDH) and cytochrome oxidase (COX) activities in brain (hippocampus, striatum and cerebral cortex), heart, skeletal muscle, liver and kidney of rats. Our results showed that complex I inhibited SDH activity in hippocampus, cerebral cortex, heart and liver; and inhibited COX in heart and kidney. Complex II inhibited SDH in heart and hippocampus; COX was inhibited in hippocampus, heart, liver and kidney. SDH activity was inhibited by complex III in heart, muscle, liver and kidney. However, COX activity was increased in hippocampus, striatum, cerebral cortex and kidney. Complex IV inhibited SDH activity in muscle and liver; COX activity was inhibited in kidney and increased in hippocampus, striatum and cerebral cortex. In a general manner, the complexes tested in this work decrease the activities of SDH and COX in heart, skeletal muscle, liver and kidney. In brain, complexes I and II were shown to be inhibitors and complexes III and IV activators of these enzymes. In vitro studies showed that the ruthenium complexes III and IV did not alter COX activity in kidney, but activated the enzyme in hippocampus, striatum and cerebral cortex, suggesting that these complexes present a direct action on COX in brain.
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Affiliation(s)
- Eduardo G Victor
- Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, 88806-000, Criciúma, SC, Brazil
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