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Deza-Ponzio R, Albrecht PA, Fernandez-Hubeid LE, Eichwald T, Cejas RB, Garay YC, Rivera-Meza M, Latini A, Irazoqui FJ, Virgolini MB. ALDH2 Inhibition by Lead and Ethanol Elicits Redox Imbalance and Mitochondrial Dysfunction in SH-SY5Y Human Neuroblastoma Cell Line: Reversion by Alda-1. Neurotoxicology 2023; 97:12-24. [PMID: 37142061 DOI: 10.1016/j.neuro.2023.05.001] [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: 12/22/2022] [Revised: 04/17/2023] [Accepted: 05/01/2023] [Indexed: 05/06/2023]
Abstract
Lead (Pb), a common environmental contaminant, and ethanol (EtOH), a widely available drug of abuse, are well-known neurotoxicants. In vivo, experimental evidence indicates that Pb exposure affects oxidative EtOH metabolism with a high impact on living organisms. On these bases, we evaluated the consequences of combined Pb and EtOH exposure on aldehyde dehydrogenase 2 (ALDH2) functionality. In vitro exposure to 10µM Pb, 200mM EtOH, or their combination for 24h reduced ALDH2 activity and content in SH-SY5Y human neuroblastoma cells. In this scenario, we observed mitochondrial dysfunction characterized by reduced mass and membrane potential, decreased maximal respiration, and spare capacity. We also evaluated the oxidative balance in these cells finding a significant increase in reactive oxygen species (ROS) production and lipid peroxidation products under all treatments accompanied by an increase in catalase (CAT) activity and content. These data suggest that ALDH2 inhibition induces the activation of converging cytotoxic mechanisms resulting in an interplay between mitochondrial dysfunction and oxidative stress. Notably, NAD+ (1mM for 24h) restored ALDH2 activity in all groups, while an ALDH2 enhancer (Alda-1, 20µM for 24h) also reversed some of the deleterious effects resulting from impaired ALDH2 function. Overall, these results reveal the crucial role of this enzyme on the Pb and EtOH interaction and the potential of activators such as Alda-1 as therapeutic approaches against several conditions involving aldehydes accumulation.
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Affiliation(s)
- Romina Deza-Ponzio
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina; Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Técnicas (IFEC-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
| | - Paula A Albrecht
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina; Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Técnicas (IFEC-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
| | - Lucia E Fernandez-Hubeid
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina; Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Técnicas (IFEC-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
| | - Tuany Eichwald
- Department of Biochemistry, Laboratory of Bioenergetics and Oxidative Stress-LABOX, Federal University of Santa Catarina, Florianópolis 88037-100, Brazil
| | - Romina B Cejas
- Centro de Investigaciones en Química Biológica de Córdoba, CIQUIBIC, CONICET and Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - Yohana C Garay
- Centro de Investigaciones en Química Biológica de Córdoba, CIQUIBIC, CONICET and Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - Mario Rivera-Meza
- Department of Pharmacological and Toxicological Chemistry, Faculty of Chemical and Pharmaceutical Sciences Santiago, Chile
| | - Alexandra Latini
- Department of Biochemistry, Laboratory of Bioenergetics and Oxidative Stress-LABOX, Federal University of Santa Catarina, Florianópolis 88037-100, Brazil
| | - Fernando J Irazoqui
- Centro de Investigaciones en Química Biológica de Córdoba, CIQUIBIC, CONICET and Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - Miriam B Virgolini
- Departamento de Farmacología Otto Orsingher, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina; Instituto de Farmacología Experimental de Córdoba-Consejo Nacional de Investigaciones Técnicas (IFEC-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina.
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2
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Cannabidiol and Nano-Selenium Increase Microvascularization and Reduce Degenerative Changes in Superficial Breast Muscle in C. perfringens-Infected Chickens. Int J Mol Sci 2022; 24:ijms24010237. [PMID: 36613680 PMCID: PMC9820102 DOI: 10.3390/ijms24010237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022] Open
Abstract
Here, we demonstrated the potential of Cannabis-derived cannabidiol (CBD) and nanosized selenium (nano-Se) for the modulation of microvascularization and muscle fiber lesions in superficial breast muscle in C. perfringens-challenged chickens. The administration of CBD resulted in a decreased number of atrophic fibers (3.13 vs. 1.13/1.5 mm2) compared with the control, whereas nano-Se or both substances resulted in a decreased split fiber number (4.13 vs. 1.55/1.5 mm2) and in a lower number of necrotic myofibers (2.38 vs. 0.69/1.5 mm2) in breast muscle than the positive control. There was a significantly higher number of capillary vessels in chickens in the CBD+Nano-Se group than in the control and positive control groups (1.31 vs. 0.97 and 0.98, respectively). Feeding birds experimental diets lowered the activity of DNA damage repair enzymes, including 3,N4-ethenodeoxycytosine (by 39.6%), 1,N6-ethenodeoxyadenosine (by 37.5%), 8-oxo-guanine (by 36.2%), formamidopyrimidine (fapy)-DNA glycosylase (by 56.2%) and human alkyl adenine DNA glycosylase (by 40.2%) in the ileal mucosa, but it did not compromise the blood mitochondrial oxygen consumption rate (-2.67 OD/min on average). These findings indicate a potential link between gut mucosa condition and histopathological changes in superficial pectoral muscle under induced inflammation and show the ameliorative effect of CBD and nano-Se in this cross-talk due to their protection from mucosal DNA damage.
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de Oliveira VS, Castro AJG, Domingues JT, de Souza AZP, Scheffer DDL, Latini A, Soares CHL, Van Der Kraak G, Silva FRMB. A Brazilian pulp and paper mill effluent disrupts energy metabolism in immature rat testis and alters Sertoli cell secretion and mitochondrial activity. Anim Reprod 2020; 17:e20190116. [PMID: 32714452 PMCID: PMC7375872 DOI: 10.1590/1984-3143-ar2019-0116] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Our objective was to investigate whether the pulp and paper mill industry effluent could affect the testis and Sertoli cells in a fast exposure period. For this, the present study was carried out in immature rats at 10-day-old. Testis treated in vitro with 4% effluent for 1 h presented changes in energy metabolism in terms of a decrease in lactate content and glucose uptake. Elevation in GSH content, as an antioxidant defense mechanism, was also detected. Sertoli cells treated with 4% effluent for 1 hour showed alterations in the mitochondrial metabolism that favor the decoupling of oxidative phosphorylation and the generation of oxygen reactive species and also a time and concentration-dependent delay secretion of acidic vesicles. Our results showed that pollutants present in the pulp and paper mill effluents, in a short time of exposure, are capable of inducing alterations in important metabolic functions in the testis and in Sertoli cells that are crucial for the correct progression of spermatogenesis and fertility.
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Affiliation(s)
| | | | | | | | - Débora da Luz Scheffer
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - Alexandra Latini
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | | | - Glen Van Der Kraak
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
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Shao Y, Wang L, Langlois P, Mironov G, Chan HM. Proteome changes in methylmercury-exposed mouse primary cerebellar granule neurons and astrocytes. Toxicol In Vitro 2019; 57:96-104. [PMID: 30776503 DOI: 10.1016/j.tiv.2019.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 01/14/2019] [Accepted: 02/14/2019] [Indexed: 11/29/2022]
Abstract
Methylmercury (MeHg) is a neurotoxicant, with the cerebellum as the main target of toxicity; however, the toxic effects of MeHg on specific cell types remain unclear. Here, primary cerebellar granule neurons (CGNs) and cerebellar astrocytes were isolated and analyzed for total mercury accumulation, cellular reactive oxygen species (ROS) production, and whole-cell proteome expression after exposure to 0-10 μM MeHg for 24 h. Intracellular mercury and ROS levels showed dose-dependent increases. Mercury accumulation was greater in CGNs than astrocytes. The proteomic analysis identified a total of 1966 and 3214 proteins in CGNs and astrocytes, among which 183 and 262 proteins were differentially expressed after mercury exposure, respectively. Enrichment analysis revealed mitochondrial-associated organelles as the main targets of MeHg in both cell types. Whereas multiple functions/pathways were affected in CGNs, the oxidation-reduction process was the most significantly changed function/pathway in astrocytes. CGNs were more sensitive to MeHg-mediated neurotoxicity than astrocytes. The two cell types showed distinct mechanistic responses to MeHg. In astrocytes, the mitochondrion was the primary target of toxicity, resulting in increases in oxidation-reduction process responses. In CGNs, the neurotrophin signaling pathway, cytoskeleton, cAMP signaling pathway, and thyroid hormone signaling pathway were affected.
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Affiliation(s)
- Yueting Shao
- School of Public Health, Guangzhou Medical University, Guangzhou, China
| | - Lewis Wang
- Department of Biology, University of Ottawa, Canada
| | | | - Gleb Mironov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Canada
| | - Hing Man Chan
- Department of Biology, University of Ottawa, Canada.
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Latini A, de Bortoli da Silva L, da Luz Scheffer D, Pires ACS, de Matos FJ, Nesi RT, Ghisoni K, de Paula Martins R, de Oliveira PA, Prediger RD, Ghersi M, Gabach L, Pérez MF, Rubiales-Barioglio S, Raisman-Vozari R, Mongeau R, Lanfumey L, Aguiar AS. Tetrahydrobiopterin improves hippocampal nitric oxide-linked long-term memory. Mol Genet Metab 2018; 125:104-111. [PMID: 29935801 DOI: 10.1016/j.ymgme.2018.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/09/2018] [Accepted: 06/09/2018] [Indexed: 11/24/2022]
Abstract
Tetrahydrobiopterin (BH4) is synthesized by the combined action of three metabolic pathways, namely de novo synthesis, recycling, and salvage pathways. The best-known function of BH4 is its mandatory action as a natural cofactor of the aromatic amino acid hydroxylases and nitric oxide synthases. Thus, BH4 is essential for the synthesis of nitric oxide, a retrograde neurotransmitter involved in learning and memory. We investigated the effect of BH4 (4-4000 pmol) intracerebroventricular administration on aversive memory, and on BH4 metabolism in the hippocampus of rodents. Memory-related behaviors were assessed in Swiss and C57BL/6 J mice, and in Wistar rats. It was consistently observed across all rodent species that BH4 facilitates aversive memory acquisition and consolidation by increasing the latency to step-down in the inhibitory avoidance task. This effect was associated with a reduced threshold to generate hippocampal long-term potentiation process. In addition, two inhibitors of memory formation (N(ω)-nitro-L-arginine methyl ester - L-Name - and dizocilpine - MK-801 -) blocked the enhanced effect of BH4 on memory, while the amnesic effect was not rescue by the co-administration of BH4 or a cGMP analog (8-Br-cGMP). The data strongly suggest that BH4 enhances aversive memory by activating the glutamatergic neurotransmission and the retrograde activity of NO. It was also demonstrated that BH2 can be converted into BH4 by activating the BH4 salvage pathway under physiological conditions in the hippocampus. This is the first evidence showing that BH4 enhances aversive memory and that the BH4 salvage pathway is active in the hippocampus.
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Affiliation(s)
- Alexandra Latini
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
| | - Lucila de Bortoli da Silva
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Débora da Luz Scheffer
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Ananda Christina Staats Pires
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Filipe José de Matos
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Renata T Nesi
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Karina Ghisoni
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Roberta de Paula Martins
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Paulo Alexandre de Oliveira
- LEXDON, Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Rui D Prediger
- LEXDON, Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Marisa Ghersi
- Facultad de Ciencias Químicas, CIBICI, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Laura Gabach
- Facultad de Ciencias Químicas, CIBICI, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Mariela Fernanda Pérez
- Facultad de Ciencias Químicas, CIBICI, Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | - Rita Raisman-Vozari
- Institut de Cerveau et de la Moelle Epinière, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Raymond Mongeau
- Pharmacologie de la Circulation Cérébrale, Faculté de Pharmacie, Université Paris Descartes, EA4475, France
| | - Laurence Lanfumey
- Pharmacologie de la Circulation Cérébrale, Faculté de Pharmacie, Université Paris Descartes, EA4475, France
| | - Aderbal Silva Aguiar
- Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil; Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France
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Remor AP, da Silva RA, de Matos FJ, Glaser V, de Paula Martins R, Ghisoni K, da Luz Scheffer D, Andia DC, Portinho D, de Souza AP, de Oliveira PA, Prediger RD, Torres AI, Linhares RMM, Walz R, Ronsoni MF, Hohl A, Rafacho A, Aguiar AS, De Paul AL, Latini A. Chronic Metabolic Derangement-Induced Cognitive Deficits and Neurotoxicity Are Associated with REST Inactivation. Mol Neurobiol 2018; 56:1539-1557. [DOI: 10.1007/s12035-018-1175-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/01/2018] [Indexed: 01/14/2023]
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7
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Platelet mitochondrial dysfunction and the correlation with human diseases. Biochem Soc Trans 2017; 45:1213-1223. [PMID: 29054925 DOI: 10.1042/bst20170291] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/10/2017] [Accepted: 09/14/2017] [Indexed: 12/20/2022]
Abstract
The platelet is considered as an accessible and valuable tool to study mitochondrial function, owing to its greater content of fully functional mitochondria compared with other metabolically active organelles. Different lines of studies have demonstrated that mitochondria in platelets have function far more than thrombogenesis regulation, and beyond hemostasis, platelet mitochondrial dysfunction has also been used for studying mitochondrial-related diseases. In this review, the interplay between platelet mitochondrial dysfunction and oxidative stress, mitochondrial DNA lesions, electron transfer chain impairments, mitochondrial apoptosis and mitophagy has been outlined. Meanwhile, considerable efforts have been made towards understanding the role of platelet mitochondrial dysfunction in human diseases, such as diabetes mellitus, sepsis and neurodegenerative disorders. Alongside this, we have also articulated our perspectives on the development of potential biomarkers of platelet mitochondrial dysfunction in mitochondrial-related diseases.
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Gonçalves R, Zamoner A, Zanatta L, Zanatta AP, Remor AP, da Luz Scheffer D, Latini A, Silva FRMB. 1,25(OH)2 vitamin D3 signalling on immature rat Sertoli cells: gamma-glutamyl transpeptidase and glucose metabolism. J Cell Commun Signal 2017; 11:233-243. [PMID: 28160135 DOI: 10.1007/s12079-016-0367-1] [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: 09/02/2016] [Accepted: 11/22/2016] [Indexed: 01/06/2023] Open
Abstract
1α,25-Dihydroxyvitamin D3 (1,25-D3) is critical for the maintenance of normal male reproduction since reduced fertility is observed in vitamin D-deficient rats. Gamma-glutamyl transpeptidase (GGT) is a membrane-bound enzyme that is localized on Sertoli cells and catalyses the transfer of the gamma-glutamyl residues to an amino acid or peptide acceptor. Sertoli cells are also responsible for providing nutrients, as lactate, to the development of germ cells. The aim of this study was to investigate the effect and the mechanism of action of 1,25-D3 on GGT on Sertoli cell functions from 30-day-old immature rat testis. Results demonstrated that 1,25-D3 stimulates GGT activity at Sertoli cells plasma membrane through a PKA-dependent mechanism of action, which was not dependent of active de novo protein synthesis. The hormone increases glucose uptake, as well as lactate production and release by Sertoli cells without altering the reactive oxygen species (ROS) generation. In addition, 1,25-D3 did not change reduced glutathione (GSH) amount or oxygen consumption, and diminished Sertoli cell death. These findings demonstrate that 1,25-D3 stimulatory effect on GGT activity, glucose uptake, LDH activity and lactate production seem to be an important contribution of Sertoli cells for germ cells nutrition and for a full and active ongoing spermatogenesis.
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Affiliation(s)
- Renata Gonçalves
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Ariane Zamoner
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Leila Zanatta
- Departamento de Enfermagem, Centro de Educação Superior do Oeste, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil
| | - Ana Paula Zanatta
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Aline Pertile Remor
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Débora da Luz Scheffer
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Alexandra Latini
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Fátima Regina Mena Barreto Silva
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil.
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Ferguson MA, Sutton RM, Karlsson M, Sjövall F, Becker LB, Berg RA, Margulies SS, Kilbaugh TJ. Increased platelet mitochondrial respiration after cardiac arrest and resuscitation as a potential peripheral biosignature of cerebral bioenergetic dysfunction. J Bioenerg Biomembr 2016; 48:269-79. [PMID: 27020568 DOI: 10.1007/s10863-016-9657-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/15/2016] [Indexed: 02/02/2023]
Abstract
UNLABELLED Cardiac arrest (CA) results in a sepsis-like syndrome with activation of the innate immune system and increased mitochondrial bioenergetics. OBJECTIVE To determine if platelet mitochondrial respiration increases following CA in a porcine pediatric model of asphyxia-associated ventricular fibrillation (VF) CA, and if this readily obtained biomarker is associated with decreased brain mitochondrial respiration. CA protocol: 7 min of asphyxia, followed by VF, protocolized titration of compression depth to systolic blood pressure of 90 mmHg and vasopressor administration to a coronary perfusion pressure greater than 20 mmHg. PRIMARY OUTCOME platelet integrated mitochondrial electron transport system (ETS) function evaluated pre- and post-CA/ROSC four hours after return of spontaneous circulation (ROSC). Secondary outcome: correlation of platelet mitochondrial bioenergetics to cerebral bioenergetic function. Platelet maximal oxidative phosphorylation (OXPHOSCI+CII), P < 0.02, and maximal respiratory capacity (ETSCI+CII), P < 0.04, were both significantly increased compared to pre-arrest values. This was primarily due to a significant increase in succinate-supported respiration through Complex II (OXPHOSCII, P < 0.02 and ETSCII, P < 0.03). Higher respiration was not due to uncoupling, as the LEAKCI + CII respiration (mitochondrial respiration independent of ATP-production) was unchanged after CA/ROSC. Larger increases in platelet mitochondrial respiratory control ratio (RCR) compared to pre-CA RCR were significantly correlated with lower RCRs in the cortex (P < 0.03) and hippocampus (P < 0.04) compared to sham respiration. Platelet mitochondrial respiration is significantly increased four hours after ROSC. Future studies will identify mechanistic relationships between this serum biomarker and altered cerebral bioenergetics function following cardiac arrest.
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Affiliation(s)
- Michael A Ferguson
- Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, 34th & Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Robert M Sutton
- Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, 34th & Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Michael Karlsson
- Mitochondrial Medicine, Department of Clinical Sciences, Lund University, BMC A13, SE-221 84, Lund, Sweden
| | - Fredrik Sjövall
- Mitochondrial Medicine, Department of Clinical Sciences, Lund University, BMC A13, SE-221 84, Lund, Sweden
| | - Lance B Becker
- Department of Emergency Medicine, Perelman School of Medicine at the University of Pennsylvania, The Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Robert A Berg
- Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, 34th & Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Susan S Margulies
- School of Engineering and Applied Science, Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, PA, 19104, USA
| | - Todd J Kilbaugh
- Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, 34th & Civic Center Blvd., Philadelphia, PA, 19104, USA.
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