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Coimbra JLP, Campolina-Silva G, Lair DF, Guimarães-Ervilha LO, Souza ACF, Oliveira CA, Costa GMJ, Machado-Neves M. Subchronic intake of arsenic at environmentally relevant concentrations causes histological lesions and oxidative stress in the prostate of adult Wistar rats. Reprod Toxicol 2024; 128:108647. [PMID: 38909693 DOI: 10.1016/j.reprotox.2024.108647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/30/2024] [Accepted: 06/15/2024] [Indexed: 06/25/2024]
Abstract
The prostate gland is one of the main sites of hyperplasia and cancer in elderly men. Numerous factors have been demonstrated to disrupt prostate homeostasis, including exposure to environmental pollutants. Arsenic is a metalloid found ubiquitously in soil, air, and water, which favors human poisoning through the involuntary intake of contaminated drinking water and food and has harmful effects by increasing the oxidative stress response. This study aimed to investigate the effects of prolonged exposure to arsenic at environmentally relevant concentrations on the prostate biology of adult Wistar rats. Thirty 80-day-old male rats were divided into three experimental groups. Rats from the control group received filtered water, whereas animals from the arsenic groups ingested 1 mg L-1 and 10 mg L-1 of arsenic, in the form of sodium arsenite, daily. The arsenic solutions were provided ad libitum in the drinking water for eight weeks. Our results showed that 1 mg L-1 and 10 mg L-1 of arsenic made the prostate susceptible to evolving benign and premalignant histopathological changes. While the ingestion of 1 mg L-1 of arsenic reduced SOD activity only, 10 mg L-1 diminished SOD and CAT activity in the prostate tissue, culminating in high MDA production. These doses, however, did not affect the intraprostatic levels of DHT and estradiol. In conclusion, exposure to arsenic at environmentally relevant concentrations through drinking water induces histological and oxidative stress-related changes in the prostate of adult rats, strengthening the between arsenic exposure and prostate disorders.
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Affiliation(s)
- John L P Coimbra
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of General Biology, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
| | - Gabriel Campolina-Silva
- Department of Obstetrics, Gynecology, and Reproduction, Université Laval, Québec, QC, Canada; CHU de Quebec Research Center, Université Laval, Québec, QC, Canada
| | - Daniel F Lair
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Ana C F Souza
- Department of Animal Biology, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cleida A Oliveira
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Guilherme M J Costa
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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2
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Leal FA, Gonçalves GD, Soncini JGM, Staurengo-Ferrari L, Fattori V, Verri Jr WA, Scarano WR, Fernandes GS. Exposure to aluminium chloride during the peripuberal period induces prostate damage in male rats. Acta Histochem 2022; 124:151843. [PMID: 35021147 DOI: 10.1016/j.acthis.2022.151843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/17/2021] [Accepted: 01/04/2022] [Indexed: 11/27/2022]
Abstract
Aluminium (Al) is an important metal, but it can be toxic including for prostate tissue. This study aimed to evaluate whether exposure to aluminium chloride (AlCl3) during the peripubertal period affects ventral prostate development in rats. Male Wistar rats (30 days old) were distributed into three experimental groups: control (sterile 0.9% saline solution), AL7 (7 mg AlCl3/kg) and AL34 (34 mg AlCl3/kg). Animals were treated intraperitoneally from postnatal day (PND) 36-66 (peripubertal period). At PND67, the animals were anaesthetized and euthanized. Blood was collected for testosterone levels. The ventral prostate (VP) was removed, weighed and processed for histochemistry and immunohistochemistry to detect androgen (AR) and Ki67. Stereological and histopathological analyses, mast cell counts, and determinations of myeloperoxidase (MPO) and N-acetyl glycosidase (NAG) activity and IL-6 levels were performed. The AL34 group presented a reduction in body weight and increase in MPO activity compared to the other groups. In both the AL7 and AL34 groups, there was reorganization of the prostatic tissue compartments. There was no significant difference in prostate weight, number of granulated or degranulated mast cells, or testosterone levels. In conclusion, the exposure to aluminium chloride during the peripubertal period impairs the prostatic development.
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3
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Voigtlaender M, Beckmann L, Schulenkorf A, Sievers B, Rolling C, Bokemeyer C, Langer F. Effect of myeloperoxidase on the anticoagulant activity of low molecular weight heparin and rivaroxaban in an in vitro tumor model. J Thromb Haemost 2020; 18:3267-3279. [PMID: 32865287 DOI: 10.1111/jth.15075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/10/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Inflammation with leukocyte activation is a hallmark of cancer-associated thrombosis (CAT), and elevated leukocytes predict venous thromboembolism in cancer outpatients. In a recent trial, rivaroxaban was more efficacious than dalteparin in preventing CAT recurrence. OBJECTIVES In a proof-of-concept study, we aimed to provide a mechanistic basis for improved efficacy of rivaroxaban compared to low molecular weight heparin in CAT treatment. METHODS We studied the effects of rivaroxaban, dalteparin, and tinzaparin at peak and trough levels on tumor cell-induced procoagulant activity and platelet aggregation in the presence or absence of the cationic leukocyte-derived enzyme, myeloperoxidase (MPO). Furthermore, pro-inflammatory conditions were generated by stimulating whole blood with lipopolysaccharide (LPS) or phorbol-myristate-acetate (PMA), before measuring thrombin generation in plasma supernatants. RESULTS All three anticoagulants inhibited thrombin generation, fibrin clot formation, and platelet aggregation induced by the tissue factor-expressing prostate carcinoma cell line, 22Rv1. Pre-incubation with MPO partially attenuated the anticoagulant activity of dalteparin and tinzaparin, but not rivaroxaban, at trough levels. The effect of MPO did not involve the enzyme's catalytic properties, but required its structural integrity, as indicated by heat denaturation. In plasma obtained from LPS- or PMA-stimulated whole blood, elevated MPO antigen levels inversely correlated with the ability of tinzaparin to inhibit 22Rv1-induced thrombin generation. CONCLUSIONS Myeloperoxidase release may partially attenuate the anticoagulant activity of trough levels of dalteparin and tinzaparin in the context of paraneoplastic leukocyte activation. However, this effect is likely not sufficient to explain the improved efficacy of rivaroxaban, and possibly other oral factor Xa inhibitors, in CAT treatment.
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Affiliation(s)
- Minna Voigtlaender
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Lennart Beckmann
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anita Schulenkorf
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Bianca Sievers
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christina Rolling
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Carsten Bokemeyer
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Florian Langer
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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4
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Malecki C, Hambly BD, Jeremy RW, Robertson EN. The Role of Inflammation and Myeloperoxidase-Related Oxidative Stress in the Pathogenesis of Genetically Triggered Thoracic Aortic Aneurysms. Int J Mol Sci 2020; 21:ijms21207678. [PMID: 33081376 PMCID: PMC7590002 DOI: 10.3390/ijms21207678] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/08/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
Genetically triggered thoracic aortic aneurysms (TAAs) are usually considered to exhibit minimal levels of inflammation. However, emerging data demonstrate that specific features of an inflammatory response can be observed in TAA, and that the extent of the inflammatory response can be correlated with the severity, in both mouse models and in human studies. Myeloperoxidase (MPO) is a key mediator of the inflammatory response, via production of specific oxidative species, e.g., the hypohalous acids. Specific tissue modifications, mediated by hypohalous acids, have been documented in multiple cardiovascular pathologies, including atherosclerosis associated with coronary artery disease, abdominal aortic, and cerebral aneurysms. Similarly, data are now emerging that show the capacity of MPO-derived oxidative species to regulate mechanisms important in TAA pathogenesis, including alterations in extracellular matrix homeostasis, activation of matrix metalloproteinases, induction of endothelial dysfunction and vascular smooth muscle cell phenotypic switching, and activation of ERK1/2 signaling. The weight of evidence supports a role for inflammation in exacerbating the severity of TAA progression, expanding our understanding of the pathogenesis of TAA, identifying potential biomarkers for early detection of TAA, monitoring severity and progression, and for defining potential novel therapeutic targets.
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Affiliation(s)
- Cassandra Malecki
- Discipline of Pathology and Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (B.D.H.); (R.W.J.); (E.N.R.)
- Correspondence:
| | - Brett D. Hambly
- Discipline of Pathology and Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (B.D.H.); (R.W.J.); (E.N.R.)
| | - Richmond W. Jeremy
- Discipline of Pathology and Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (B.D.H.); (R.W.J.); (E.N.R.)
- Cardiology Department, Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
| | - Elizabeth N. Robertson
- Discipline of Pathology and Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (B.D.H.); (R.W.J.); (E.N.R.)
- Cardiology Department, Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
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5
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Crocetto F, Boccellino M, Barone B, Di Zazzo E, Sciarra A, Galasso G, Settembre G, Quagliuolo L, Imbimbo C, Boffo S, Angelillo IF, Di Domenico M. The Crosstalk between Prostate Cancer and Microbiota Inflammation: Nutraceutical Products Are Useful to Balance This Interplay? Nutrients 2020; 12:E2648. [PMID: 32878054 PMCID: PMC7551491 DOI: 10.3390/nu12092648] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 12/15/2022] Open
Abstract
The human microbiota shows pivotal roles in urologic health and disease. Emerging studies indicate that gut and urinary microbiomes can impact several urological diseases, both benignant and malignant, acting particularly on prostate inflammation and prostate cancer. Indeed, the microbiota exerts its influence on prostate cancer initiation and/or progression mechanisms through the regulation of chronic inflammation, apoptotic processes, cytokines, and hormonal production in response to different pathogenic noxae. Additionally, therapies' and drugs' responses are influenced in their efficacy and tolerability by microbiota composition. Due to this complex potential interconnection between prostate cancer and microbiota, exploration and understanding of the involved relationships is pivotal to evaluate a potential therapeutic application in clinical practice. Several natural compounds, moreover, seem to have relevant effects, directly or mediated by microbiota, on urologic health, posing the human microbiota at the crossroad between prostatic inflammation and prostate cancer development. Here, we aim to analyze the most recent evidence regarding the possible crosstalk between prostate, microbiome, and inflammation.
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Affiliation(s)
- Felice Crocetto
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples “Federico II”, 80135 Naples, Italy; (F.C.); (B.B.); (C.I.)
| | - Mariarosaria Boccellino
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80135 Naples, Italy; (M.B.); (G.G.); (G.S.); (L.Q.); (M.D.D.)
| | - Biagio Barone
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples “Federico II”, 80135 Naples, Italy; (F.C.); (B.B.); (C.I.)
| | - Erika Di Zazzo
- Department of Health Science “V. Tiberio”, 86100 Campobasso, Italy
| | - Antonella Sciarra
- Department of Translational Medical Sciences, University of Campania Luigi Vanvitelli, 80135 Naples, Italy;
| | - Giovanni Galasso
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80135 Naples, Italy; (M.B.); (G.G.); (G.S.); (L.Q.); (M.D.D.)
| | - Giuliana Settembre
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80135 Naples, Italy; (M.B.); (G.G.); (G.S.); (L.Q.); (M.D.D.)
| | - Lucio Quagliuolo
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80135 Naples, Italy; (M.B.); (G.G.); (G.S.); (L.Q.); (M.D.D.)
| | - Ciro Imbimbo
- Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples “Federico II”, 80135 Naples, Italy; (F.C.); (B.B.); (C.I.)
| | - Silvia Boffo
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, 19122 PA, USA;
| | | | - Marina Di Domenico
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80135 Naples, Italy; (M.B.); (G.G.); (G.S.); (L.Q.); (M.D.D.)
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, 19122 PA, USA;
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6
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Martínez-Marcos P, Carvajal-Serna M, Lázaro-Gaspar S, Pérez-Pé R, Muiño-Blanco T, Cebrián-Pérez JA, Casao A. Presence of melatonin-catabolizing non-specific enzymes myeloperoxidase and indoleamine 2,3-dioxygenase in the ram reproductive tract. Reprod Domest Anim 2019; 54:1643-1650. [PMID: 31587393 DOI: 10.1111/rda.13574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/30/2019] [Indexed: 11/27/2022]
Abstract
The melatonin catabolism is very complex and not completely understood. Melatonin can be metabolized by free radical interaction, but also pseudo-enzymatically or by enzymatic pathways. We have previously detected the existence of melatonin-synthesizing enzymes and melatonin receptors MT1 and MT2 in the ram reproductive tract; thus, in order to start to elucidate melatonin catabolism in these organs, we have investigated the presence of the melatonin-catabolizing enzymes indoleamine 2,3-dioxygenase (IDO, both IDO1 and IDO2 isoforms) and myeloperoxidase (MPO) in testis, epididymis and accessory glands. Gene expression analyses by real-time PCR showed the presence of MPO, IDO1 and IDO2 in all the organs of the ram reproductive tract and revealed that MPO is the main melatonin-catabolizing enzyme, which is mainly expressed in the testis and the bulbourethral glands (p < .05). These results were further corroborated by immunohistochemical staining, and by Western blot. Likewise, MPO was also evidenced in epididymal and ejaculated spermatozoa by indirect immunofluorescence and Western blot. In conclusion, melatonin-catabolizing enzymes MPO, IDO1 and IDO2 are expressed in the ram reproductive tract, and MPO is the most expressed one, mainly in the testis and the bulbourethral glands. The presented results warrant further studies on the function of these enzymes and their melatonin-metabolizing activity.
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Affiliation(s)
- Paula Martínez-Marcos
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
| | - Melissa Carvajal-Serna
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain.,Departamento de Producción Animal, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Sofía Lázaro-Gaspar
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
| | - Rosaura Pérez-Pé
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
| | - Teresa Muiño-Blanco
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
| | - José A Cebrián-Pérez
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
| | - Adriana Casao
- Grupo BIOFITER, Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto de Investigación de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain
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7
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Maki RA, Holzer M, Motamedchaboki K, Malle E, Masliah E, Marsche G, Reynolds WF. Human myeloperoxidase (hMPO) is expressed in neurons in the substantia nigra in Parkinson's disease and in the hMPO-α-synuclein-A53T mouse model, correlating with increased nitration and aggregation of α-synuclein and exacerbation of motor impairment. Free Radic Biol Med 2019; 141:115-140. [PMID: 31175983 PMCID: PMC6774439 DOI: 10.1016/j.freeradbiomed.2019.05.033] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/15/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
α-Synuclein (αSyn) is central to the neuropathology of Parkinson's disease (PD) due to its propensity for misfolding and aggregation into neurotoxic oligomers. Nitration/oxidation of αSyn leads to dityrosine crosslinking and aggregation. Myeloperoxidase (MPO) is an oxidant-generating enzyme implicated in neurodegenerative diseases. In the present work we have examined the impact of MPO in PD through analysis of postmortem PD brain and in a novel animal model in which we crossed a transgenic mouse expressing the human MPO (hMPO) gene to a mouse expressing human αSyn-A53T mutant (A53T) (hMPO-A53T). Surprisingly, our results show that in PD substantia nigra, the hMPO gene is expressed in neurons containing aggregates of nitrated αSyn as well as MPO-generated HOCl-modified epitopes. In our hMPO-A53T mouse model, we also saw hMPO expression in neurons but not mouse MPO. In the mouse model, hMPO was expressed in neurons colocalizing with nitrated αSyn, carbamylated lysine, nitrotyrosine, as well as HOCl-modified epitopes/proteins. RNAscope in situ hybridization confirmed hMPO mRNA expression in neurons. Interestingly, the hMPO protein expressed in hMPO-A53T brain is primarily the precursor proMPO, which enters the secretory pathway potentially resulting in interneuronal transmission of MPO and oxidative species. Importantly, the hMPO-A53T mouse model, when compared to the A53T model, exhibited significant exacerbation of motor impairment on rotating rods, balance beams, and wire hang tests. Further, hMPO expression in the A53T model resulted in earlier onset of end stage paralysis. Interestingly, there was a high concentration of αSyn aggregates in the stratum lacunosum moleculare of hippocampal CA2 region, which has been associated in humans with accumulation of αSyn pathology and neural atrophy in dementia with Lewy bodies. This accumulation of αSyn aggregates in CA2 was associated with markers of endoplasmic reticulum (ER) stress and the unfolded protein response with expression of activating transcription factor 4 (ATF4), C/EBP homologous protein (CHOP), MPO, and cleaved caspase-3. Together these findings suggest that MPO plays an important role in nitrative and oxidative damage that contributes to αSyn pathology in synucleinopathies.
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Affiliation(s)
- Richard A Maki
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Michael Holzer
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Austria
| | - Khatereh Motamedchaboki
- Tumor Initiation & Maintenance Program and NCI Cancer Centre Proteomics Facility, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Ernst Malle
- Gottfried Schatz Research Center, Division of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Eliezer Masliah
- Molecular Neuropathology Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA; Department Neurosciences, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA; Department of Pathology, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Austria
| | - Wanda F Reynolds
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
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8
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Hanna A, Ross J, Heitor F. Rare case of atypical crescentic glomerulonephritis and interstitial lung disease with negative anti-GBM antibody and positive anti-MPO antibody. BMJ Case Rep 2019; 12:12/8/e229256. [PMID: 31371277 PMCID: PMC6678005 DOI: 10.1136/bcr-2019-229256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
A 70-year-old man presented with 1 month of haematuria and mild right-sided flank pain with no other symptoms. Diagnostic workup included serum studies which showed the presence of antimyeloperoxidase antibodies, a kidney biopsy which demonstrated necrotising crescentic glomerulonephritis with linear immunofluorescence of the basement membrane, and electron microscopy which exhibited thickening of the glomerular basement membrane. Incidentally, the patient was discovered to have a latent hepatitis B infection, which complicated immunosuppressive therapy. He was treated with a course of plasmapheresis and methylprednisolone, followed by entecavir for hepatitis B prophylaxis, and finally by rituximab. This case of glomerulonephritis was notable for its resemblance to the better known Goodpasture’s disease. Typically, Goodpasture’s syndrome exists on a spectrum from seronegative disease to double-positive disease that presents with both anti–glomerular basement membrane (anti-GBM) and cytoplasmic-antineutrophil cytoplasmic antibodies/antiproteinase 3 antibodies (c-ANCA/anti-PR3). However, this patient’s glomerulonephritis was unique because he presented negative for anti-GBM antibodies and positive for perinuclear-antineutrophil cytoplasmic antibodies/antimyeloperoxidase antibodies (p-ANCA/anti-MPO).
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Affiliation(s)
- Alexander Hanna
- Medical School, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Jenny Ross
- Department of Pathology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Fernanda Heitor
- Department of Medicine, Northwestern Memorial Hospital, Chicago, Illinois, USA
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9
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Verma S, Shukla S, Pandey M, MacLennan GT, Gupta S. Differentially Expressed Genes and Molecular Pathways in an Autochthonous Mouse Prostate Cancer Model. Front Genet 2019; 10:235. [PMID: 30972102 PMCID: PMC6445055 DOI: 10.3389/fgene.2019.00235] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/04/2019] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer remains a major public health problem and the second leading cause of cancer-related deaths in men in the United States. The present study aims to understand the molecular pathway(s) of prostate cancer which is essential for early detection and treatment. Dorsolateral prostate from 20 week transgenic adenocarcinoma of the mouse prostate (TRAMP) mice, which spontaneously develops prostate cancer and recapitulates human disease and age-matched non-transgenic littermates were utilized for microarray analysis. Mouse genome network and pathway analyses were mapped to the human genome using the Ingenuity Pathway Analysis (IPA) database for annotation, visualization, and integrated discovery. In total, 136 differentially expressed genes, including 32 downregulated genes and 104 upregulated genes were identified in the dorsolateral prostate of TRAMP, compared to non-transgenic mice. A subset of differentially expressed genes were validated by qRT-PCR. Alignment with human genome database identified 18 different classes of proteins, among these, 36% were connected to the nucleic acid binding, including ribosomal proteins, which play important role in protein synthesis—the most enriched pathway in the development of prostate cancer. Furthermore, the results suggest deregulation of signaling molecules (9%) and enzyme modulators (8%) affect various pathways. An imbalance in other protein classes, including transporter proteins (7%), hydrolases (6%), oxidoreductases, and cytoskeleton proteins (5%), contribute to cancer progression. Our study evaluated the underlying pathways and its connection to human prostate cancer, which may further help assess the risk of disease development and progression and identify potential targets for therapeutic intervention.
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Affiliation(s)
- Shiv Verma
- Department of Urology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Sanjeev Shukla
- Department of Urology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States.,The Urology Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Mitali Pandey
- Department of Urology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States.,Vancouver Prostate Center, Vancouver, BC, Canada
| | - Gregory T MacLennan
- Department of Urology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States.,Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Sanjay Gupta
- Department of Urology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States.,The Urology Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Department of Nutrition, Case Western Reserve University, Cleveland, OH, United States.,Department of Urology, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, United States.,Division of General Medical Sciences, Case Comprehensive Cancer Center, Cleveland, OH, United States
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10
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Ndrepepa G. Myeloperoxidase - A bridge linking inflammation and oxidative stress with cardiovascular disease. Clin Chim Acta 2019; 493:36-51. [PMID: 30797769 DOI: 10.1016/j.cca.2019.02.022] [Citation(s) in RCA: 235] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 12/17/2022]
Abstract
Myeloperoxidase (MPO) is a member of the superfamily of heme peroxidases that is mainly expressed in neutrophils and monocytes. MPO-derived reactive species play a key role in neutrophil antimicrobial activity and human defense against various pathogens primarily by participating in phagocytosis. Elevated MPO levels in circulation are associated with inflammation and increased oxidative stress. Multiple lines of evidence suggest an association between MPO and cardiovascular disease (CVD) including coronary artery disease, congestive heart failure, arterial hypertension, pulmonary arterial hypertension, peripheral arterial disease, myocardial ischemia/reperfusion-related injury, stroke, cardiac arrhythmia and venous thrombosis. Elevated MPO levels are associated with a poor prognosis including increased risk for overall and CVD-related mortality. Elevated MPO may signify an increased risk for CVD for at least 2 reasons. First, low-grade inflammation and increased oxidative stress coexist with many metabolic abnormalities and comorbidities and consequently an elevated MPO level may represent an increased cardiometabolic risk in general. Second, MPO produces a large number of highly reactive species which can attack, destroy or modify the function of every known cellular component. The most common MPO actions relevant to CVD are generation of dysfunctional lipoproteins with an increased atherogenicity potential, reduced NO availability, endothelial dysfunction, impaired vasoreactivity and atherosclerotic plaque instability. These actions strongly suggest that MPO is directly involved in the pathophysiology of CVD. In this regard MPO may be seen as a mediator or an instrument through which inflammation promotes CVD at molecular and cellular level. Clinical value of MPO therapeutic inhibition remains to be tested.
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Affiliation(s)
- Gjin Ndrepepa
- Department of Adult Cardiology, Deutsches Herzzentrum München, Technische Universität, Lazarettstrasse 36, 80636 Munich, Germany.
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11
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Roumeguère T, Van Antwerpen P, Vanhamme L, Delporte C, Rousseau A, Wespes E, Vanhaeverbeek M, Boudjeltia KZ. Myeloperoxidase and Prostate volume: A preliminary study. Prog Urol 2018; 28:482-487. [PMID: 30042072 DOI: 10.1016/j.purol.2018.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 05/13/2018] [Accepted: 06/07/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Oxidative stress is associated with the development of BPH and might be modulated by several factors. Myeloperoxidase (MPO) has recently been observed in prostate tissue. Our goal was to investigate the correlation between MPO and the prostate volume. MATERIAL AND METHODS Hundred and twenty-one patients (48-70 years) with a filled IPSS were prospectively included. Blood sampling (PSA, testosterone, Angiotensin II (AngII), MPO, Mox-LDL) and transrectal ultrasound of the prostate were performed with total volume (TV) and transitional zone volume (TZ) measurements. For correlation, univariate analyses were depicted by Pearson's coefficient. Multilinear regression analysis used a stepwise backward selection of the explicative variables. RESULTS In multivariate analysis, the TV was positively correlated to the combination of age and Ang II but negatively to MPO specific activity (Std Coef=-0.272, P=0.004). Significant correlations were confirmed between TZ, age and MPO specific activity but not with Ang II. A negative correlation between TZ and MPO specific activity was also observed (Std Coef=-0.21, P=0.016). No correlation was found with Mox-LDL. CONCLUSIONS Negative correlation between MPO and prostate volume was observed but careful interpretations may be endorsed and longitudinal study is necessary. It seems relevant to focus on the potential contribution of MPO in the development of prostatic diseases as this enzyme can also promote DNA oxidation. LEVEL OF EVIDENCE 4.
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Affiliation(s)
- T Roumeguère
- Laboratory of Experimental Medicine, Unit 222, ULB, CHU Charleroi, Charleroi, Belgium; Department of Urology, University Clinics of Brussels, ULB, Erasme Hospital, Brussels, Belgium.
| | - P Van Antwerpen
- Laboratory of Pharmaceutical Chemistry and Analytical Platform of the Faculty of Pharmacy, ULB, Brussels, Belgium
| | - L Vanhamme
- Institute for Molecular Biology and Medicine (IBMM), ULB, Gosselies, Belgium
| | - C Delporte
- Laboratory of Pharmaceutical Chemistry and Analytical Platform of the Faculty of Pharmacy, ULB, Brussels, Belgium
| | - A Rousseau
- Laboratory of Experimental Medicine, Unit 222, ULB, CHU Charleroi, Charleroi, Belgium
| | - E Wespes
- Department of Urology, ULB, CHU Charleroi, Charleroi, Belgium
| | - M Vanhaeverbeek
- Laboratory of Experimental Medicine, Unit 222, ULB, CHU Charleroi, Charleroi, Belgium
| | - K Zouaoui Boudjeltia
- Laboratory of Experimental Medicine, Unit 222, ULB, CHU Charleroi, Charleroi, Belgium
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12
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Khalil A, Medfai H, Poelvoorde P, Kazan MF, Delporte C, Van Antwerpen P, El-Makhour Y, Biston P, Delrée P, Badran B, Vanhamme L, Boudjeltia KZ. Myeloperoxidase promotes tube formation, triggers ERK1/2 and Akt pathways and is expressed endogenously in endothelial cells. Arch Biochem Biophys 2018; 654:55-69. [PMID: 30016634 DOI: 10.1016/j.abb.2018.07.011] [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: 12/22/2017] [Revised: 06/15/2018] [Accepted: 07/12/2018] [Indexed: 01/15/2023]
Abstract
Myeloperoxidase is a member of the mammalian peroxidase family, mainly expressed in the myeloblastic cell lineage. It is considered a major bactericidal agent as it is released in the phagosome where it catalyzes the formation of reactive oxygen species. It is also released in the extracellular spaces including blood where it is absorbed on (lipo)proteins and endothelial cell surface, interfering with endothelial function. We performed RNA sequencing on MPO-treated endothelial cells, analyzed their transcriptome and validated the profile of gene expression by individual qRT-PCR. Some of the induced genes could be grouped in several functional networks, including tubulogenesis, angiogenesis, and blood vessel morphogenesis and development as well as signal transduction pathways associated to these mechanisms. MPO treatment mimicked the effects of VEGF on several signal transduction pathways, such as Akt, ERK or FAK involved in angiogenesis. Accordingly MPO, independently of its enzymatic activity, stimulated tube formation by endothelial cells. RNA interference also pointed at a role of endogenous MPO in tubulogenesis and endothelium wound repair in vitro. These data suggest that MPO, whether from endogenous or exogenous sources, could play a role in angiogenesis and vascular repair in vivo.
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Affiliation(s)
- Alia Khalil
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium; Laboratory of Cancer Biology and Molecular Immunology, Lebanese University, Faculty of Sciences, Hadath-Beirut, Lebanon
| | - Hayfa Medfai
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium
| | - Philippe Poelvoorde
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium
| | - Mohammad Fayyad Kazan
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium
| | - Cedric Delporte
- Laboratory of Pharmaceutical Chemistry and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Pierre Van Antwerpen
- Laboratory of Pharmaceutical Chemistry and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Yolla El-Makhour
- Laboratory of Cancer Biology and Molecular Immunology, Lebanese University, Faculty of Sciences, Hadath-Beirut, Lebanon
| | - Patrick Biston
- Department of Intensive Care Unit, CHU de Charleroi, Charleroi, Belgium
| | - Paul Delrée
- IPG, Avenue Georges Lemaître 25, 6041, Gosselies, Belgium
| | - Bassam Badran
- Laboratory of Cancer Biology and Molecular Immunology, Lebanese University, Faculty of Sciences, Hadath-Beirut, Lebanon
| | - Luc Vanhamme
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium; Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium.
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium
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Vanhamme L, Zouaoui Boudjeltia K, Van Antwerpen P, Delporte C. The other myeloperoxidase: Emerging functions. Arch Biochem Biophys 2018; 649:1-14. [PMID: 29614255 DOI: 10.1016/j.abb.2018.03.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/07/2018] [Accepted: 03/30/2018] [Indexed: 12/20/2022]
Abstract
Myeloperoxidase (MPO) is a member of the mammalian peroxidase family. It is mainly expressed in neutrophils, monocytes and macrophages. As a catalyzer of reactive oxidative species and radical species formation, it contributes to neutrophil bactericidal activity. Nevertheless MPO invalidation does not seem to have major health consequences in affected individuals. This suggests that MPO might have alternative functions supporting its conservation during evolution. We will review the available data supporting these non-canonical functions in terms of tissue specific expression, function and enzymatic activity. Thus, we discuss its cell type specific expression. We review in between others its roles in angiogenesis, endothelial (dys-) function, immune reaction, and inflammation. We summarize its pathological actions in clinical conditions such as cardiovascular disease and cancer.
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Affiliation(s)
- Luc Vanhamme
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium; Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium.
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium
| | - Pierre Van Antwerpen
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Cédric Delporte
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium.
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14
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Quintero-García M, Delgado-González E, Sánchez-Tusie A, Vázquez M, Aceves C, Anguiano B. Iodine prevents the increase of testosterone-induced oxidative stress in a model of rat prostatic hyperplasia. Free Radic Biol Med 2018; 115:298-308. [PMID: 29248723 DOI: 10.1016/j.freeradbiomed.2017.12.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 12/11/2022]
Abstract
Oxidative stress and inflammation are involved in the development and/or progression of benign prostatic hyperplasia (BPH). Molecular iodine (I2) induces antiproliferative and apoptotic effects in prostate cancer cells, but it is unknown if I2 regulates oxidative stress in the normal and/or tumoral prostate. The purpose of this study was to analyze the effects of I2 and celecoxib (Cxb) on oxidative stress and inflammation in a model of prostatic hyperplasia. Cxb was used as positive control of cyclooxygenase-2 (COX-2) inhibition. Prostatic hyperplasia was induced in male Wistar rats (170g) with testosterone (5mg/kg/week, for three weeks). One week before hyperplasia induction, I2 (25mg/day/rat) or Cxb (1.25mg/day/rat) was supplied for four weeks in the drinking water. Prostatic hyperplasia was evaluated by histological analysis, DNA content, and/or proliferating cell nuclear antigen (PCNA) expression. Lipoperoxidation (malondialdehyde) and nitrite (NO2-) levels were analyzed by colorimetric methods, while nitric oxide synthase (NOS), COX, and myeloperoxidase (MPO) enzymes were analyzed using RT-PCR, immunoblotting, and/or enzymatic assays. Levels of 15-F2t-isoprostanes, prostaglandins (PGE2), leukotrienes (LTB4), and tumor necrosis factor alpha (TNFα) were measured by ELISA. Control testosterone-treated animals exhibited hyperplasia in the dorsolateral prostate, as well as increments in almost all oxidative parameters except for COX-1, TNFα, or MPO. I2 and Cxb prevented epithelial hyperplasia (DNA content) and oxidative stress induction generated by testosterone in almost the same intensity, and the minimum I2 dose required was 2.5mg/rat. The antioxidant capacity of I2 was also analyzed in a cell-free system, showing that this element inhibited the conversion of nitrate (NO3-) to NO2-. I2 did not modify the prostatic oxidative state in testosterone untreated rats. In summary, our data showed that antiproliferative and antioxidant effects of I2 involve the inhibition of NOS and the COX-2 pathway. Further studies are necessary to analyze the therapeutic and/or adjuvant effects of I2 with first-line medications used to treat BPH.
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Affiliation(s)
- Michelle Quintero-García
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico
| | - Evangelina Delgado-González
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico
| | - Ana Sánchez-Tusie
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico
| | - Mario Vázquez
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico
| | - Carmen Aceves
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico
| | - Brenda Anguiano
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230 Querétaro, Mexico.
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15
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Roumeguère T, Sfeir J, El Rassy E, Albisinni S, Van Antwerpen P, Boudjeltia KZ, Farès N, Kattan J, Aoun F. Oxidative stress and prostatic diseases. Mol Clin Oncol 2017; 7:723-728. [PMID: 29181163 PMCID: PMC5700279 DOI: 10.3892/mco.2017.1413] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 08/18/2017] [Indexed: 01/01/2023] Open
Abstract
Prostatic diseases are a common health problem among males in Western countries, and include chronic prostatic diseases, which have an unclear pathogenesis and few treatment options. In vitro and in vivo studies describe oxidative stress as a major pathway involved in the occurrence of benign prostatic hyperplasia, prostatic cancer and chronic prostatitis. Thus, the oxidative stress cascade is a potential target for the treatment of prostatic diseases. This paper presents a systematic review of the available data concerning the association between oxidative stress and the most common chronic prostatic diseases, and describes the available treatment options that act upon this pathway.
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Affiliation(s)
- Thierry Roumeguère
- Department of Urology, University Clinics of Brussels, Université Libre de Bruxelles, Erasme Hôpital, 187793 Bruxelles, Belgium.,Laboratory of Experimental Medicine, Unit 222, Université Libre de Bruxelles, Le Centre Hospitalier Universitaire de Charleroi, 6042 Charleroi, Belgium
| | - Joseph Sfeir
- Department of Urology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut 166830, Lebanon
| | - Elie El Rassy
- Department of Oncology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut 166830, Lebanon
| | - Simone Albisinni
- Department of Urology, University Clinics of Brussels, Université Libre de Bruxelles, Erasme Hôpital, 187793 Bruxelles, Belgium
| | - Pierre Van Antwerpen
- Laboratory of Experimental Medicine, Unit 222, Université Libre de Bruxelles, Le Centre Hospitalier Universitaire de Charleroi, 6042 Charleroi, Belgium
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine, Unit 222, Université Libre de Bruxelles, Le Centre Hospitalier Universitaire de Charleroi, 6042 Charleroi, Belgium
| | - Nassim Farès
- Research Laboratory of Physiology and PathoPhysiology, Faculty of Medicine, Saint Joseph University, Beirut 166830, Lebanon
| | - Joseph Kattan
- Department of Oncology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut 166830, Lebanon
| | - Fouad Aoun
- Department of Urology, Hôtel-Dieu de France University Hospital, Faculty of Medicine, Saint Joseph University, Beirut 166830, Lebanon.,Department of Urology, Jules Bordet Institute, Université Libre de Bruxelles, 1000 Bruxelles, Belgium
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16
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Pullar JM, Carr AC, Bozonet SM, Rosengrave P, Kettle AJ, Vissers MCM. Elevated seminal plasma myeloperoxidase is associated with a decreased sperm concentration in young men. Andrology 2017; 5:431-438. [DOI: 10.1111/andr.12327] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/20/2016] [Accepted: 12/20/2016] [Indexed: 12/11/2022]
Affiliation(s)
- J. M. Pullar
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - A. C. Carr
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - S. M. Bozonet
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - P. Rosengrave
- Allan Wilson Centre for Molecular Ecology and Evolution; Department of Anatomy; University of Otago; Dunedin New Zealand
| | - A. J. Kettle
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - M. C. M. Vissers
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
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17
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Noyon C, Roumeguère T, Delporte C, Dufour D, Cortese M, Desmet JM, Lelubre C, Rousseau A, Poelvoorde P, Nève J, Vanhamme L, Boudjeltia KZ, Van Antwerpen P. The presence of modified nucleosides in extracellular fluids leads to the specific incorporation of 5-chlorocytidine into RNA and modulates the transcription and translation. Mol Cell Biochem 2017; 429:59-71. [PMID: 28074342 DOI: 10.1007/s11010-016-2936-2] [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: 09/07/2016] [Accepted: 12/23/2016] [Indexed: 12/13/2022]
Abstract
Myeloperoxidase (MPO) is able to promote several kinds of damage and is involved in mechanisms leading to various diseases such as atherosclerosis or cancers. An example of these damages is the chlorination of nucleic acids, which is considered as a specific marker of the MPO activity. Since 5-chlorocytidine has been recently shown in healthy donor plasmas, this study aimed at discovering if these circulating modified nucleosides could be incorporated into RNA and DNA and if their presence impacts the ability of enzymes involved in the incorporation, transcription, and translation processes. Experimentations, which were carried out in vitro with endothelial and prostatic cells, showed a large penetration of all chloronucleosides but an exclusive incorporation of 5-chlorocytidine into RNA. However, no incorporation into DNA was observed. This specific incorporation is accompanied by an important reduction of translation yield. Although, in vitro, DNA polymerase processed in the presence of chloronucleosides but more slowly than in control conditions, ribonucleotide reductase could not reduce chloronucleotides prior to the replication. This reduction seems to be a limiting step, protecting DNA from chloronucleoside incorporation. This study shows the capacity of transcription enzyme to specifically incorporate 5-chlorocytidine into RNA and the loss of capacity-complete or partial-of different enzymes, involved in replication, transcription or translation, in the presence of chloronucleosides. Questions remain about the long-term impact of such specific incorporation in the RNA and such decrease of protein production on the cell viability and function.
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Affiliation(s)
- Caroline Noyon
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Thierry Roumeguère
- Department of Urology, Erasme Hospital, Université Libre de Bruxelles, 1070, Brussels, Belgium
| | - Cédric Delporte
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium.,Analytical Platform of the Faculty of Pharmacy, Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, Campus Plaine CP205/5, Boulevard du Triomphe, Brussels, 1050, Belgium
| | - Damien Dufour
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Melissa Cortese
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium.,Analytical Platform of the Faculty of Pharmacy, Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, Campus Plaine CP205/5, Boulevard du Triomphe, Brussels, 1050, Belgium
| | - Jean-Marc Desmet
- Unit of Dialysis, CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, 6110, Montigny-le-Tilleul, Belgium
| | - Christophe Lelubre
- Laboratory of Experimental Medicine, CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, 6110, Montigny-le-Tilleul, Belgium
| | - Alexandre Rousseau
- Laboratory of Experimental Medicine, CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, 6110, Montigny-le-Tilleul, Belgium
| | - Philippe Poelvoorde
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, 6041, Gosselies, Belgium
| | - Jean Nève
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Luc Vanhamme
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, 6041, Gosselies, Belgium
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine, CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, 6110, Montigny-le-Tilleul, Belgium
| | - Pierre Van Antwerpen
- Laboratory of Organic Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, 1050, Brussels, Belgium. .,Analytical Platform of the Faculty of Pharmacy, Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, Université Libre de Bruxelles, Campus Plaine CP205/5, Boulevard du Triomphe, Brussels, 1050, Belgium.
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18
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Validation of a sensitive LC/MSMS method for chloronucleoside analysis in biological matrixes and its applications. Talanta 2016; 154:322-8. [PMID: 27154681 DOI: 10.1016/j.talanta.2016.03.087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/24/2016] [Accepted: 03/26/2016] [Indexed: 11/24/2022]
Abstract
Myeloperoxidase promotes several kinds of damage and is involved in the development of various diseases (as atherosclerosis and cancers). An example of these damage is the chlorination of nucleic acids, which is considered as a specific marker of the MPO activity on those acids. This study aimed to develop and validate a method to analyze oxidized and MPO-specific chlorinated nucleosides in biological matrixes (cells, tissues and plasma). Although a lot of methods to quantify oxidized or chlorinated nucleosides have already been established, none of them took into account all these derivatives together. The new method used a Triple Quadrupole mass spectrometer fitted with a Jet Stream electrospray ionization source. This approach has two advantages compared with existing LC/MSMS analyses: it includes MPO-induced modifications in a unique analysis and obtains a better sensitivity. Our optimized method reached LOQs of 1.50pg and 1.42pg respectively for oxoG and oxo(d)G, being 4 times more sensitive than previous methods, and LOQs of 1.39pg, 1.30pg and 63.4 fg respectively for 5-chlorocytidine, 5-chloro-2'-deoxycytidine and 8-chloroguanosine. Developed method is also 25 times more sensitive for chloroguanosine than the best existing method. Nevertheless, this method is not specific enough for 8-chloro-(2'-deoxy)adenosine analysis. Examples of applications demonstrate the interest of this validated method. Indeed analysis of plasma from healthy donors highlighted exclusively the presence of 5-chlorocytidine (1.0±0.2nM) whereas analysis of treated endothelial cells by HOCl showed chlorination of guanosine and cytidine in cytoplasmic pools and chlorination of (deoxy)cytidine in DNA and RNA. In conclusion, this study shows that 5-chloro-2'-deoxycytidine, 5-chlorocytidine and 8-chloroguanosine are good markers allowing us to detect the MPO activity in biological fluids. The robust, specific and sensitive developed method enables future studies on MPO implications in human diseases.
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Ponthier J, Franck T, Parrilla-Hernandez S, Niesten A, de la Rebiere G, Serteyn D, Deleuze S. Concentration, activity and biochemical characterization of myeloperoxidase in fresh and post-thaw equine semen and their implication on freezability. Reprod Domest Anim 2014; 49:285-91. [PMID: 24479950 DOI: 10.1111/rda.12270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 11/28/2013] [Indexed: 11/27/2022]
Abstract
Myeloperoxidase (MPO) is a pro-oxidant enzyme associated with decreased motility in thawed equine semen. This study aimed to describe MPO concentration, activity and subunits in raw and thawed semen and to correlate these data with motilities in raw and thawed semen. Semen samples from five stallions were collected four times. Motilities were assessed in raw and thawed semen. MPO assays were performed in raw seminal plasma, raw sperm-rich pellet and thawed semen. Total and active MPO concentrations were, respectively, assayed by enzyme-linked immunosorbent assay and specific immunological extraction followed by enzymatic detection. MPO subunits present in semen were characterized by Western blot. Purified active MPO was added in saline solution and freezing extender to control its activity during freezing procedure. Differences between medians were determined using Kruskal-Wallis test, and correlations were determined using Spearman's test for nonparametric data. Active MPO concentration was low in seminal plasma and thawed semen, but high in pellet (p = 0.0058), as the opposite relation was observed for total MPO concentration (p < 0.0001). In seminal plasma and post-thaw semen, inactive 86-kDa MPO precursor was mainly observed. Purified MPO activity was decreased in the extender (p = 0.0286). MPO activity in pellet was highly correlated with thawed progressive motility (r = -0.5576, p = 0.0086). Inactive MPO precursor and unknown low molecular weight inactive MPO precursor subunits explain low MPO activity in semen. Major MPO activity was observed in pellet, and post-thaw loss of activity is partially explained by MPO inactivation in extender. Thawed semen motility was negatively correlated with MPO activity in pellet, becoming a potential freezability predictor.
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Affiliation(s)
- J Ponthier
- Equine Clinic, Veterinary Medicine Faculty, ULg University of Liège, Liège, Belgium; LINALUX-MLS, Centre Européen du Cheval, Vielsalm, Belgium
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Ponthier J, Teague SR, Franck TY, de la Rebière G, Serteyn DD, Brinsko SP, Love CC, Blanchard TL, Varner DD, Deleuze SC. Effect of non-sperm cells removal with single-layer colloidal centrifugation on myeloperoxidase concentration in post-thaw equine semen. Theriogenology 2013; 80:1082-7. [PMID: 24054552 DOI: 10.1016/j.theriogenology.2013.08.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 08/06/2013] [Accepted: 08/10/2013] [Indexed: 10/26/2022]
Abstract
Myeloperoxidase (MPO) is a pro-oxidant enzyme contained in and released by neutrophils during degranulation or after lysis. Post-thaw semen contains MPO and its concentration is associated with decreased sperm motility. Recently, MPO concentration in post-thaw semen was shown to be associated with the presence of non-sperm cells (NSC). The objective of this study was to evaluate the effect of a single-layer colloidal centrifugation before cryopreservation on NSC and MPO concentrations in equine semen. The experimental design consisted of freezing semen with or without previous centrifugation through two concentrations of single-layer colloid media. Non-sperm cells and MPO concentrations were assessed in pellet and upper layer at each step of the procedure and MPO was detected in cells by immunocytochemistry. Single-layer colloid centrifugation decreased NSC and MPO concentrations in post-thaw semen. The MPO concentration was correlated with concentration of NSC in the upper layer of the supernatant. In post-thaw semen, with or without previous single-layer colloid centrifugation, MPO concentration was correlated with concentration of NSC. Overall, neutrophils were rarely observed and NSC were mainly epithelial cells or cellular debris, as demonstrated by MPO immunocytochemistry. At all steps of the semen processing and cryopreservation, MPO immunostaining was clearly identified only on NSC. In conclusion, our study shows that NSC present in fresh semen release MPO during freezing.
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Affiliation(s)
- Jérôme Ponthier
- Equine Clinic, Veterinary Medicine Faculty, ULg, University of Liège, Liège, Belgium.
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Aranda N, Sosa S, Delgado G, Aceves C, Anguiano B. Uptake and antitumoral effects of iodine and 6-iodolactone in differentiated and undifferentiated human prostate cancer cell lines. Prostate 2013; 73:31-41. [PMID: 22576883 DOI: 10.1002/pros.22536] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 04/18/2012] [Indexed: 11/08/2022]
Abstract
BACKGROUND Evidence indicates that iodine per se could be implicated in the physiology of several organs that can internalize it. In thyroid and breast cancer, iodine treatments inhibit cell proliferation and induce apoptosis through a direct (mitochondria) and/or indirect effect (iodolipid generation). Here, we determined the uptake of iodide (I(-) ) and iodine (I(2) ), as well as the antiproliferative and apoptotic effects of 6-iodolactone (6-IL) and both forms of iodine in human prostate cells lines. METHODS Non-cancerous (RWPE-1) and cancerous (LNCaP, DU-145) cells, as well as nude mice xenotransplanted with DU-145 cells were used as cancer models. Iodine uptake was analyzed with radioactive tracers, transporter expression by qRT-PCR, cell proliferation by blue trypan, apoptosis by enzyme immunoassay or fluorescence, BAX and BCL-2 by western-blot, and caspsase 3 by enzymatic assay. RESULTS All three cell lines take up both forms of iodine. In RWPE-1 cells, I(-) uptake depends on the Na(+) /I(-) symporter (NIS), whereas it was independent of NIS in LNCaP and DU-145 cells. Antiproliferative effects of iodine and 6-IL were dose and time dependent; RWPE-1 was most sensitive to I(-) and 6-IL, whereas LNCaP was more sensitive to I(2) . In the three cell lines both forms of iodine activated the intrinsic apoptotic pathway (increasing the BAX/BCL-2 index and caspases). Iodine supplementation impaired growth of the DU-145 tumor in nude mice. CONCLUSION Normal and cancerous prostate cells can take up iodine, and depending on the chemical form, it exerts antiproliferative and apoptotic effects both in vitro and in vivo.
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Affiliation(s)
- Nuri Aranda
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Qro., Mexico
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