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Sánchez-Morales L, Porras N, García-Seco T, Pérez-Sancho M, Cruz F, Chinchilla B, Barroso-Arévalo S, Diaz-Frutos M, Buendía A, Moreno I, Briones V, Risalde MDLÁ, de la Fuente J, Juste R, Garrido J, Balseiro A, Gortázar C, Rodríguez-Bertos A, Domínguez M, Domínguez L. Neuropathological lesions in intravenous BCG-stimulated K18-hACE2 mice challenged with SARS-CoV-2. Vet Res 2024; 55:71. [PMID: 38822398 PMCID: PMC11143641 DOI: 10.1186/s13567-024-01325-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 04/27/2024] [Indexed: 06/03/2024] Open
Abstract
In the wake of the COVID-19 pandemic caused by SARS-CoV-2, questions emerged about the potential effects of Bacillus Calmette-Guérin (BCG) vaccine on the immune response to SARS-CoV-2 infection, including the neurodegenerative diseases it may contribute to. To explore this, an experimental study was carried out in BCG-stimulated and non-stimulated k18-hACE2 mice challenged with SARS-CoV-2. Viral loads in tissues determined by RT-qPCR, histopathology in brain and lungs, immunohistochemical study in brain (IHC) as well as mortality rates, clinical signs and plasma inflammatory and coagulation biomarkers were assessed. Our results showed BCG-SARS-CoV-2 challenged mice presented higher viral loads in the brain and an increased frequency of neuroinvasion, with the greatest differences observed between groups at 3-4 days post-infection (dpi). Histopathological examination showed a higher severity of brain lesions in BCG-SARS-CoV-2 challenged mice, mainly consisting of neuroinflammation, increased glial cell population and neuronal degeneration, from 5 dpi onwards. This group also presented higher interstitial pneumonia and vascular thrombosis in lungs (3-4 dpi), BCG-SARS-CoV-2 mice showed higher values for TNF-α and D-dimer values, while iNOS values were higher in SARS-CoV-2 mice at 3-4 dpi. Results presented in this study indicate that BCG stimulation could have intensified the inflammatory and neurodegenerative lesions promoting virus neuroinvasion and dissemination in this experimental model. Although k18-hACE2 mice show higher hACE2 expression and neurodissemination, this study suggests that, although the benefits of BCG on enhancing heterologous protection against pathogens and tumour cells have been broadly demonstrated, potential adverse outcomes due to the non-specific effects of BCG should be considered.
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Affiliation(s)
- Lidia Sánchez-Morales
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - Néstor Porras
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
| | - Teresa García-Seco
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
| | - Marta Pérez-Sancho
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain.
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain.
| | - Fátima Cruz
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
| | - Blanca Chinchilla
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Production, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - Sandra Barroso-Arévalo
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - Marta Diaz-Frutos
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - Aránzazu Buendía
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
| | - Inmaculada Moreno
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera Pozuelo-Majadahonda km 2, Majadahonda, 28220, Madrid, Spain
| | - Víctor Briones
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - María de Los Ángeles Risalde
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), UIC Zoonosis y Enfermedades Emergentes (ENZOEM), Universidad de Córdoba, Córdoba, Spain
| | - José de la Fuente
- SaBio Instituto de Investigación en Recursos Cinegéticos, Ciudad Real, Spain
- Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Ramón Juste
- Animal Health Department, NEIKER-Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), 48160, Derio, Bizkaia, Spain
| | - Joseba Garrido
- Animal Health Department, NEIKER-Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), 48160, Derio, Bizkaia, Spain
| | - Ana Balseiro
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - Christian Gortázar
- SaBio Instituto de Investigación en Recursos Cinegéticos, Ciudad Real, Spain
| | - Antonio Rodríguez-Bertos
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
| | - Mercedes Domínguez
- Unidad de Inmunología Microbiana, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Carretera Pozuelo-Majadahonda km 2, Majadahonda, 28220, Madrid, Spain
| | - Lucas Domínguez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, 28040, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040, Madrid, Spain
- Real Academia de Doctores de España, C. de San Bernardo, 49, 28015, Madrid, Spain
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Upmacis RK, Becker WL, Rattendi DM, Bell RS, Jordan KD, Saniei S, Mejia E. Analysis of Sex-Specific Prostanoid Production Using a Mouse Model of Selective Cyclooxygenase-2 Inhibition. Biomark Insights 2022; 17:11772719221142151. [DOI: 10.1177/11772719221142151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022] Open
Abstract
Background: Prostanoids are a family of lipid mediators formed from arachidonic acid by cyclooxygenase enzymes and serve as biomarkers of vascular function. Prostanoid production may be different in males and females indicating that different therapeutic approaches may be required during disease. Objectives: We examined sex-dependent differences in COX-related metabolites in genetically modified mice that produce a cyclooxygenase-2 (COX2) enzyme containing a tyrosine 385 to phenylalanine (Y385F) mutation. This mutation renders the COX2 enzyme unable to form a key intermediate radical required for complete arachidonic acid metabolism and provides a model of selective COX2 inhibition. Design and Methods: Mice heterozygous for the Y385F mutation in COX2 were mated to produce cohorts of wild-type, heterozygous, and COX2 mutant mice. We investigated whether the genotype distribution followed Mendelian genetics and studied whether sex-specific differences could be found in certain prostanoid levels measured in peritoneal macrophages and in urinary samples. Results: The inheritance of the COX2 mutation displayed a significant deviation with respect to Mendel’s laws of genetics, with a lower-than-expected progeny of weaned COX2 mutant pups. In macrophages, prostaglandin E2 (PGE2) production following lipopolysaccharide (LPS) and interferon gamma (IFNγ) stimulation was COX2-dependent in both males and females, and data indicated that crosstalk between the nitric oxide (NO) and COX2 pathways may be sex specific. We observed significant differences in urinary PGE2 production by male and female COX2 mutant mice, with the loss of COX2 activity in male mice decreasing their ability to produce urinary PGE2. Finally, female mice across all 3 genotypes produced similar levels of urinary thromboxane (measured as 11-dehydro TxB2) at significantly higher levels than males, indicating a sex-related difference that is likely COX1-derived. Conclusions: Our findings clearly demonstrate that sex-related differences in COX-derived metabolites can be observed, and that other pathways (such as the NO pathway) are affected.
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Affiliation(s)
- Rita K Upmacis
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Wendy L Becker
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Donna M Rattendi
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Raven S Bell
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Kelsey D Jordan
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Shayan Saniei
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
| | - Elena Mejia
- The Haskins Laboratory, Department of Chemistry & Physical Sciences, Pace University, New York, NY, USA
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3
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Balasuriya GK, Nugapitiya SS, Hill-Yardin EL, Bornstein JC. Nitric Oxide Regulates Estrus Cycle Dependent Colonic Motility in Mice. Front Neurosci 2021; 15:647555. [PMID: 34658750 PMCID: PMC8511480 DOI: 10.3389/fnins.2021.647555] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 08/12/2021] [Indexed: 11/23/2022] Open
Abstract
Women are more susceptible to functional bowel disorders than men and the severity of their symptoms such as diarrhea, constipation, abdominal pain and bloating changes over the menstrual cycle, suggesting a role for sex hormones in gastrointestinal function. Nitric oxide (NO) is a major inhibitory neurotransmitter in the gut and blockade of nitric oxide synthase (NOS; responsible for NO synthesis) increases colonic motility in male mice ex vivo. We assessed the effects of NOS inhibition on colonic motility in female mice using video imaging analysis of colonic motor complexes (CMCs). To understand interactions between NO and estrogen in the gut, we also quantified neuronal NOS and estrogen receptor alpha (ERα)-expressing myenteric neurons in estrus and proestrus female mice using immunofluorescence. Mice in estrus had fewer CMCs under control conditions (6 ± 1 per 15 min, n = 22) compared to proestrus (8 ± 1 per 15 min, n = 22, One-way ANOVA, p = 0.041). During proestrus, the NOS antagonist N-nitro-L-arginine (NOLA) increased CMC numbers compared to controls (189 ± 46%). In contrast, NOLA had no significant effect on CMC numbers during estrus. During estrus, we observed more NOS-expressing myenteric neurons (48 ± 2%) than during proestrus (39 ± 1%, n = 3, p = 0.035). Increased nuclear expression of ERα was observed in estrus which coincided with an altered motility response to NOLA in contrast with proestrus when ERα was largely cytoplasmic. In conclusion, we confirm a cyclic and sexually dimorphic effect of NOS activity in female mouse colon, which could be due to genomic effects of estrogens via ERα.
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Affiliation(s)
- Gayathri K Balasuriya
- Department of Physiology, The University of Melbourne, Parkville, VIC, Australia.,School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Saseema S Nugapitiya
- Department of Physiology, The University of Melbourne, Parkville, VIC, Australia.,Faculty of Medicine, The University of Queensland, Herston, QLD, Australia
| | - Elisa L Hill-Yardin
- Department of Physiology, The University of Melbourne, Parkville, VIC, Australia.,School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Joel C Bornstein
- Department of Physiology, The University of Melbourne, Parkville, VIC, Australia
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Nayak MK, Ghatge M, Flora GD, Dhanesha N, Jain M, Markan KR, Potthoff MJ, Lentz SR, Chauhan AK. The metabolic enzyme pyruvate kinase M2 regulates platelet function and arterial thrombosis. Blood 2021; 137:1658-1668. [PMID: 33027814 PMCID: PMC7995287 DOI: 10.1182/blood.2020007140] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/23/2020] [Indexed: 02/08/2023] Open
Abstract
Very little is known about the role of metabolic regulatory mechanisms in platelet activation and thrombosis. Dimeric pyruvate kinase M2 (PKM2) is a crucial regulator of aerobic glycolysis that facilitates the production of lactate and metabolic reprogramming. Herein, we report that limiting PKM2 dimer formation, using the small molecule inhibitor ML265, negatively regulates lactate production and glucose uptake in human and murine stimulated platelets. Furthermore, limiting PKM2 dimer formation reduced agonist-induced platelet activation, aggregation, clot retraction, and thrombus formation under arterial shear stress in vitro in both human and murine platelets. Mechanistically, limiting PKM2 dimerization downregulated phosphatidylinositol 3-kinase (PI3K)-mediated protein kinase B or serine/threonine-specific protein kinase (Akt)/glycogen synthase kinase 3 (GSK3) signaling in human and murine platelets. To provide further evidence for the role of PKM2 in platelet function, we generated a megakaryocyte or platelet-specific PKM2-/- mutant strain (PKM2fl/flPF4Cre+). Platelet-specific PKM2-deficient mice exhibited impaired agonist-induced platelet activation, aggregation, clot retraction, and PI3K-mediated Akt/GSK3 signaling and were less susceptible to arterial thrombosis in FeCl3 injury-induced carotid- and laser injury-induced mesenteric artery thrombosis models, without altering hemostasis. Wild-type mice treated with ML265 were less susceptible to arterial thrombosis with unaltered tail bleeding times. These findings reveal a major role for PKM2 in coordinating multiple aspects of platelet function, from metabolism to cellular signaling to thrombosis, and implicate PKM2 as a potential target for antithrombotic therapeutic intervention.
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Affiliation(s)
- Manasa K Nayak
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Madankumar Ghatge
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Gagan D Flora
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Nirav Dhanesha
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Manish Jain
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Kathleen R Markan
- Department of Neuroscience and Pharmacology, University of Iowa, Iowa City, IA; and
| | - Matthew J Potthoff
- Department of Neuroscience and Pharmacology, University of Iowa, Iowa City, IA; and
- Department of Veterans Affairs Medical Center, Iowa City, IA
| | - Steven R Lentz
- Department of Internal Medicine, Division of Hematology/Oncology, and
| | - Anil K Chauhan
- Department of Internal Medicine, Division of Hematology/Oncology, and
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5
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Bekendam RH, Iyu D, Passam F, Stopa JD, De Ceunynck K, Muse O, Bendapudi PK, Garnier CL, Gopal S, Crescence L, Chiu J, Furie B, Panicot-Dubois L, Hogg PJ, Dubois C, Flaumenhaft R. Protein disulfide isomerase regulation by nitric oxide maintains vascular quiescence and controls thrombus formation. J Thromb Haemost 2018; 16:2322-2335. [PMID: 30207066 PMCID: PMC6374154 DOI: 10.1111/jth.14291] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Indexed: 12/17/2022]
Abstract
Essentials Nitric oxide synthesis controls protein disulfide isomerase (PDI) function. Nitric oxide (NO) modulation of PDI controls endothelial thrombogenicity. S-nitrosylated PDI inhibits platelet function and thrombosis. Nitric oxide maintains vascular quiescence in part through inhibition of PDI. SUMMARY: Background Protein disulfide isomerase (PDI) plays an essential role in thrombus formation, and PDI inhibition is being evaluated clinically as a novel anticoagulant strategy. However, little is known about the regulation of PDI in the vasculature. Thiols within the catalytic motif of PDI are essential for its role in thrombosis. These same thiols bind nitric oxide (NO), which is a potent regulator of vessel function. To determine whether regulation of PDI represents a mechanism by which NO controls vascular quiescence, we evaluated the effect of NO on PDI function in endothelial cells and platelets, and thrombus formation in vivo. Aim To assess the effect of S-nitrosylation on the regulation of PDI and other thiol isomerases in the vasculature. Methods and results The role of endogenous NO in PDI activity was evaluated by incubating endothelium with an NO scavenger, which resulted in exposure of free thiols, increased thiol isomerase activity, and enhanced thrombin generation on the cell membrane. Conversely, exposure of endothelium to NO+ carriers or elevation of endogenous NO levels by induction of NO synthesis resulted in S-nitrosylation of PDI and decreased surface thiol reductase activity. S-nitrosylation of platelet PDI inhibited its reductase activity, and S-nitrosylated PDI interfered with platelet aggregation, α-granule release, and thrombin generation on platelets. S-nitrosylated PDI also blocked laser-induced thrombus formation when infused into mice. S-nitrosylated ERp5 and ERp57 were found to have similar inhibitory activity. Conclusions These studies identify NO as a critical regulator of vascular PDI, and show that regulation of PDI function is an important mechanism by which NO maintains vascular quiescence.
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Affiliation(s)
- Roelof H. Bekendam
- Aix Marseille Université, INSERM UMR-S1076, Vascular Research Center Marseille, Marseille, France
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - David Iyu
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
- Departamento de Fisiología. Facultad de Medicina, Instituto Murciano de Investigación Biosanitaria (IMIB), Universidad de Murcia, Murcia, Spain
| | - Freda Passam
- St George Clinical School, University of New South Wales, Kogarah, New South Wales, Australia
| | - Jack D. Stopa
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Karen De Ceunynck
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Oluwatoyosi Muse
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Pavan K. Bendapudi
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Céline L. Garnier
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Srila Gopal
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Lydie Crescence
- Aix Marseille Université, INSERM UMR-S1076, Vascular Research Center Marseille, Marseille, France
| | - Joyce Chiu
- The Centenary Institute, NHMRC Clinical Trials Centre, Sydney Medical School, University of Sydney New South Wales, Australia
| | - Bruce Furie
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
| | - Laurence Panicot-Dubois
- Aix Marseille Université, INSERM UMR-S1076, Vascular Research Center Marseille, Marseille, France
| | - Philip J. Hogg
- The Centenary Institute, NHMRC Clinical Trials Centre, Sydney Medical School, University of Sydney New South Wales, Australia
| | - Christophe Dubois
- Aix Marseille Université, INSERM UMR-S1076, Vascular Research Center Marseille, Marseille, France
| | - Robert Flaumenhaft
- Department of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA
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Castardo-de-Paula JC, de Campos BH, de Jager L, Amorim EDT, Zanluqui NG, de Farias CC, Higachi L, Pinge-Filho P, Barbosa DS, Martins-Pinge MC. Effects of Inducible Nitric Oxide Synthase Inhibition on Cardiovascular Risk of Adult Endotoxemic Female Rats: Role of Estrogen. Front Physiol 2018; 9:1020. [PMID: 30108513 PMCID: PMC6079304 DOI: 10.3389/fphys.2018.01020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/10/2018] [Indexed: 01/23/2023] Open
Abstract
Aim: Autonomic modulation responds to ovarian hormones and estrogen increases nitric oxide bioavailability. Also, females have minor susceptibility to sepsis and a higher survival rate. However, few studies have evaluated the role of estrogen in cardiovascular, autonomic, and oxidative parameters during initial endotoxemia and under inducible nitric oxide synthase (iNOS) inhibition in female rats. Methods: Female wistar rats were subjected to ovariectomy and divided into three groups: OVX (ovariectomized), OVX+E (OVX plus daily estradiol) and SHAM (false surgery). After 8 weeks, mean arterial pressure (MAP) and heart rate (HR) were recorded in non-anesthetized catheterized rats, before and after intravenous LPS injection, preceded by S-methylisothiourea sulfate (SMT) injection, or sterile saline. Cardiovascular recordings underwent spectral analysis for evaluation of autonomic modulation. Two hours after LPS, plasma was collected to assess total radical-trapping antioxidant (TRAP), nitrite levels (NO2), lipoperoxidation (LOOH), and paraoxonase 1 (PON1) activity. Results: Two hours after LPS, females treated with SMT presented a decrease of MAP, when compared to saline-LPS groups. At this same time, all SMT+LPS groups presented an increase of sympathetic and a decrease of parasympathetic modulation of HR. Two hours after saline+LPS, OVX presented decreased total radical-trapping antioxidant (TRAP) compared to SHAM. When treated with SMT+LPS, OVX did not altered TRAP, while estradiol reduced LOOH levels. Conclusion: iNOS would be responsible for sympathetic inhibition and consumption of antioxidant reserves of females during endotoxemia, since iNOS is inhibited, treatment with estradiol could be protective in inflammatory challenges.
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Affiliation(s)
| | - Blenda H de Campos
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Lorena de Jager
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Eric D T Amorim
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Nágela G Zanluqui
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Carine C de Farias
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Luciana Higachi
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Décio S Barbosa
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Marli C Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
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7
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Cardiovascular risk and the effect of nitric oxide synthase inhibition in female rats: The role of estrogen. Exp Gerontol 2017; 97:38-48. [DOI: 10.1016/j.exger.2017.07.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 12/12/2022]
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8
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Allende M, Molina E, Lecumberri R, Sanchez-Arias JA, Ugarte A, Guruceaga E, Oyarzabal J, Hermida J. Inducing heat shock protein 70 expression provides a robust antithrombotic effect with minimal bleeding risk. Thromb Haemost 2017; 117:1722-1729. [PMID: 28837204 DOI: 10.1160/th17-02-0108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/11/2017] [Indexed: 01/03/2023]
Abstract
Antithrombotic medications target coagulation factors. Their use is associated with an increased bleeding risk. Safer drugs are needed. The heat shock protein 70 (Hsp70) exhibits antithrombotic properties that do not influence bleeding. By using murine models, we aimed to test the hypothesis that overexpressing Hsp70 with CM-695, a first in class dual inhibitor of HDAC6 and phosphodiesterase 9, protects against thrombosis while leaves bleeding tendency unaltered. CM-695 was used to induce Hsp70 overexpression. Hsp70 overexpressing mice were submitted to three thrombosis-triggering procedures. The ferric chloride carotid artery model was used to compare the antithrombotic role of CM-695 and rivaroxaban, a direct oral anticoagulant. The mouse tail transection model was used to compare the bleeding tendency upon CM-695 or rivaroxaban administration. Intraperitoneal (i. p.) 20 mg/kg CM-695 increased Hsp70 expression markedly in the murine aortic tissue. This treatment delayed thrombosis in the collagen/epinephrine [p=0.04 (Log-Rank test), n=10], Rose Bengal/laser [median vessel occlusion time (OT): 58.6 vs 39.0 minutes (min) in the control group (CG), p=0.008, n≥10] and ferric chloride (OT: 14.7 vs 9.2 min in the CG, p=0.032, n≥10) models. I.p. 80 mg/kg CM-695 (n≥9) and intravenous 3 mg/kg rivaroxaban (n≥8) significantly delayed thrombosis. CM-695 did not induce bleeding [median bleeding time (BT): 8.5 vs 7.5 min in the CG, n≥10]. However, BT was dramatically increased by rivaroxaban (30.0 vs 13.7 min in the CG, p=0.001, n=10). In conclusion, CM-695 is a new antithrombotic small molecule devoid of bleeding risk that may be envisioned as a useful clinical tool.
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Affiliation(s)
| | | | | | | | | | | | | | - José Hermida
- José Hermida, MD,PhD, University of Navarra, Center for Applied Medical Research (CIMA), Laboratory of Thrombosis and Haemostasis, Pío XII 55, Pamplona 31008, Spain, Tel.: +34948194700×3027, Fax: +34948194716, E-mail:
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9
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Ganesh D, Kumarathasan P, Thomson EM, St-Germain C, Blais E, Crapo J, Vincent R. Impact of Superoxide Dismutase Mimetic AEOL 10150 on the Endothelin System of Fischer 344 Rats. PLoS One 2016; 11:e0151810. [PMID: 26990293 PMCID: PMC4798617 DOI: 10.1371/journal.pone.0151810] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 03/04/2016] [Indexed: 12/24/2022] Open
Abstract
Endothelin-1 is a potent vasoconstrictor and mitogenic peptide involved in the regulation of vasomotor tone and maintenance of blood pressure. Oxidative stress activates the endothelin system, and is implicated in pulmonary and cardiovascular diseases including hypertension, congestive heart failure, and atherosclerosis. Superoxide dismutase mimetics designed with the aim of treating diseases that involve reactive oxygen species in their pathophysiology may exert a hypotensive effect, but effects on the endothelin system are unknown. Our objective was to determine the effect of the superoxide dismutase mimetic AEOL 10150 on the basal endothelin system in vivo. Male Fischer-344 rats were injected subcutaneously with 0, 2 or 5 mg/kg body weight of AEOL 10150 in saline. Plasma oxidative stress markers and endothelins (bigET-1, ET-1, ET-2, ET-3) as well as lung and heart endothelin/nitric oxide system gene expressions were measured using HPLC-Coularray, HPLC-Fluorescence and RT-PCR respectively. AEOL 10150 reduced (p<0.05) the circulating levels of isoprostane (-25%) and 3-nitrotyrosine (-50%) measured in plasma 2h and 24h after treatment, confirming delivery of a physiologically-relevant dose and the potent antioxidant activity of the drug. The reduction in markers of oxidative stress coincided with sustained 24h decrease (p<0.05) of plasma levels of ET-1 (-50%) and ET-3 (-10%). Expression of preproET-1 and endothelin converting enzyme-1 mRNA were not altered significantly in the lungs. However preproET-1 (not significant) and ECE-1 mRNA (p<0.05) were increased (10-25%) in the heart. Changes in the lungs included decrease (p<0.05) of mRNA for the ET-1 clearance receptor ETB and the vasoconstriction-signaling ETA receptor (-30%), and an early surge of inducible nitric oxide synthase expression followed by sustained decrease (-40% after 24 hours). The results indicate that interception of the endogenous physiological flux of reactive nitrogen species and reactive oxygen species in rats impacts the endothelin/nitric oxide system, supporting a homeostatic relationship between those systems.
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Affiliation(s)
- Devi Ganesh
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
| | - Prem Kumarathasan
- Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
| | - Errol M Thomson
- Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
| | - Carly St-Germain
- Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
| | - Erica Blais
- Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
| | - James Crapo
- National Jewish Health, Denver, Colorado, United States of America
| | - Renaud Vincent
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Environmental Health Science and Research Bureau, Environmental and Radiation Health Sciences Directorate, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario, Canada
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Protective vascular and cardiac effects of inducible nitric oxide synthase in mice with hyperhomocysteinemia. PLoS One 2014; 9:e107734. [PMID: 25226386 PMCID: PMC4167199 DOI: 10.1371/journal.pone.0107734] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 08/19/2014] [Indexed: 11/19/2022] Open
Abstract
Diet-induced hyperhomocysteinemia produces endothelial and cardiac dysfunction and promotes thrombosis through a mechanism proposed to involve oxidative stress. Inducible nitric oxide synthase (iNOS) is upregulated in hyperhomocysteinemia and can generate superoxide. We therefore tested the hypothesis that iNOS mediates the adverse oxidative, vascular, thrombotic, and cardiac effects of hyperhomocysteinemia. Mice deficient in iNOS (Nos2-/-) and their wild-type (Nos2+/+) littermates were fed a high methionine/low folate (HM/LF) diet to induce mild hyperhomocysteinemia, with a 2-fold increase in plasma total homocysteine (P<0.001 vs. control diet). Hyperhomocysteinemic Nos2+/+ mice exhibited endothelial dysfunction in cerebral arterioles, with impaired dilatation to acetylcholine but not nitroprusside, and enhanced susceptibility to carotid artery thrombosis, with shortened times to occlusion following photochemical injury (P<0.05 vs. control diet). Nos2-/- mice had decreased rather than increased dilatation responses to acetylcholine (P<0.05 vs. Nos2+/+ mice). Nos2-/- mice fed control diet also exhibited shortened times to thrombotic occlusion (P<0.05 vs. Nos2+/+ mice), and iNOS deficiency failed to protect from endothelial dysfunction or accelerated thrombosis in mice with hyperhomocysteinemia. Deficiency of iNOS did not alter myocardial infarct size in mice fed the control diet but significantly increased infarct size and cardiac superoxide production in mice fed the HM/LF diet (P<0.05 vs. Nos2+/+ mice). These findings suggest that endogenous iNOS protects from, rather than exacerbates, endothelial dysfunction, thrombosis, and hyperhomocysteinemia-associated myocardial ischemia-reperfusion injury. In the setting of mild hyperhomocysteinemia, iNOS functions to blunt cardiac oxidative stress rather than functioning as a source of superoxide.
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11
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Cau SBA, Carneiro FS, Tostes RC. Differential modulation of nitric oxide synthases in aging: therapeutic opportunities. Front Physiol 2012; 3:218. [PMID: 22737132 PMCID: PMC3382417 DOI: 10.3389/fphys.2012.00218] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 05/31/2012] [Indexed: 12/24/2022] Open
Abstract
Vascular aging is the term that describes the structural and functional disturbances of the vasculature with advancing aging. The molecular mechanisms of aging-associated endothelial dysfunction are complex, but reduced nitric oxide (NO) bioavailability and altered vascular expression and activity of NO synthase (NOS) enzymes have been implicated as major players. Impaired vascular relaxation in aging has been attributed to reduced endothelial NOS (eNOS)-derived NO, while increased inducible NOS (iNOS) expression seems to account for nitrosative stress and disrupted vascular homeostasis. Although eNOS is considered the main source of NO in the vascular endothelium, neuronal NOS (nNOS) also contributes to endothelial cells-derived NO, a mechanism that is reduced in aging. Pharmacological modulation of NO generation and expression/activity of NOS isoforms may represent a therapeutic alternative to prevent the progression of cardiovascular diseases. Accordingly, this review will focus on drugs that modulate NO bioavailability, such as nitrite anions and NO-releasing non-steroidal anti-inflammatory drugs, hormones (dehydroepiandrosterone and estrogen), statins, resveratrol, and folic acid, since they may be useful to treat/to prevent aging-associated vascular dysfunction. The impact of these therapies on life quality in elderly and longevity will be discussed.
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Affiliation(s)
- Stefany B A Cau
- Department of Pharmacology, Medical School of Ribeirao Preto Ribeirao Preto, Brazil
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Krishna SM, Seto SW, Moxon JV, Rush C, Walker PJ, Norman PE, Golledge J. Fenofibrate increases high-density lipoprotein and sphingosine 1 phosphate concentrations limiting abdominal aortic aneurysm progression in a mouse model. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:706-18. [PMID: 22698985 DOI: 10.1016/j.ajpath.2012.04.015] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 04/03/2012] [Accepted: 04/12/2012] [Indexed: 02/03/2023]
Abstract
There are currently no acceptable treatments to limit progression of abdominal aortic aneurysm (AAA). Increased serum concentrations of high-density lipoprotein (HDL) are associated with reduced risk of developing an AAA. The present study aimed to assess the effects of fenofibrate on aortic dilatation in a mouse model of AAA. Male low-density lipoprotein receptor-deficient (Ldlr(-/-)) mice were maintained on a high-fat diet for 3 weeks followed by 6 weeks of oral administration of vehicle or fenofibrate. From 14 to 18 weeks of age, all mice were infused with angiotensin II (AngII). At 18 weeks of age, blood and aortas were collected for assessment of serum lipoproteins, aortic pathology, aortic Akt1 and endothelial nitric oxide synthase (eNOS) activities, immune cell infiltration, eNOS and inducible NOS (iNOS) expression, sphingosine 1 phosphate (S1P) receptor status, and apoptosis. Mice receiving fenofibrate had reduced suprarenal aortic diameter, reduced aortic arch Sudan IV staining, higher serum HDL levels, increased serum S1P concentrations, and increased aortic Akt1 and eNOS activities compared with control mice. Macrophages, T lymphocytes, and apoptotic cells were less evident and eNOS, iNOS, and S1P receptors 1 and 3 were up-regulated in aortas from mice receiving fenofibrate. The present findings suggest that fenofibrate antagonizes AngII-induced AAA and atherosclerosis by up-regulating serum HDL and S1P levels, with associated activation of NO-producing enzymes and reduction of aortic inflammation.
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Affiliation(s)
- Smriti M Krishna
- Vascular Biology Unit, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
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