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Mattar P, Uribe-Cerda S, Pezoa C, Guarnieri T, Kotz CM, Teske JA, Morselli E, Perez-Leighton C. Brain site-specific regulation of hedonic intake by orexin and DYN peptides: role of the PVN and obesity. Nutr Neurosci 2022; 25:1105-1114. [PMID: 33151127 DOI: 10.1080/1028415x.2020.1840049] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The orexin peptides promote hedonic intake and other reward behaviors through different brain sites. The opioid dynorphin peptides are co-released with orexin peptides but block their effects on reward in the ventral tegmental area (VTA). We previously showed that in the paraventricular hypothalamic nucleus (PVN), dynorphin and not orexin peptides enhance hedonic intake, suggesting they have brain-site-specific effects. Obesity alters the expression of orexin and dynorphin receptors, but whether their expression across different brain sites is important to hedonic intake is unclear. We hypothesized that hedonic intake is regulated by orexin and dynorphin peptides in PVN and that hedonic intake in obesity correlates with expression of their receptors. Here we show that in mice, injection of DYN-A1-13 (an opioid dynorphin peptide) in the PVN enhanced hedonic intake, whereas in the VTA, injection of OXA (orexin-A, an orexin peptide) enhanced hedonic intake. In PVN, OXA blunted the increase in hedonic intake caused by DYN-A1-13. In PVN, injection of norBNI (opioid receptor antagonist) reduced hedonic intake but a subsequent OXA injection failed to increase hedonic intake, suggesting that OXA activity in PVN is not influenced by endogenous opioid activity. In the PVN, DYN-A1-13 increased the intake of the less-preferred food in a two-food choice task. In obese mice fed a cafeteria diet, orexin 1 receptor mRNA across brain sites involved in hedonic intake correlated with fat preference but not caloric intake. Together, these data support that orexin and dynorphin peptides regulate hedonic intake in an opposing manner with brain-site-specific effects.
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Key Words
- CeA, central amygdala
- DH, dorsal hypothalamus
- DYN, dynorphin
- KOR, kappa opioid receptor
- LH, lateral hypothalamus
- NAc, nucleus accumbens
- OFC, orbitofrontal cortex
- OR, opioid receptor
- OX1R, orexin 1 receptor
- OX2R, orexin 2 receptor
- OXA, 1orexin-A
- Orexin
- PVN, paraventricular hypothalamic nucleus
- PVT, paraventricular thalamic nucleus
- VH, ventral hypothalamus
- VTA, ventral tegmental area
- cafeteria diet
- dynorphin
- fat
- feeding behavior
- food choice
- hedonic intake
- hypocretin
- hypothalamus
- norBNI, nor-binaltorphimine
- obesity
- opioid receptors
- orexin 1 receptor
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Affiliation(s)
- P Mattar
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - S Uribe-Cerda
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Pezoa
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - T Guarnieri
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C M Kotz
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - J A Teske
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA.,Department of Food Science and Nutrition, University of Minnesota, Saint Paul, MN, USA
| | - E Morselli
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Perez-Leighton
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
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Guarnieri T. Hypothesis: Emerging Roles for Aryl Hydrocarbon Receptor in Orchestrating CoV-2-Related Inflammation. Cells 2022; 11:cells11040648. [PMID: 35203299 PMCID: PMC8869960 DOI: 10.3390/cells11040648] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 02/05/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) is the pathogenic agent of Coronavirus-Induced Disease-2019 (COVID-19), a multi-organ syndrome which primarily targets the respiratory system. In this review, considering the large amount of data pointing out the role of the Aryl hydrocarbon Receptor (AhR) in the inflammatory response and in the modulation of innate and adaptive immunity, we describe some mechanisms that strongly suggest its involvement in the management of COVID-19′s inflammatory framework. It regulates both the expression of Angiotensin Converting Enzyme-2 (ACE-2) and its stabilizing partner, the Broad neutral Amino acid Transporter 1 (B0AT1). It induces Indolamine 2,3 dioxygenase (IDO-1), the enzyme which, starting from Tryptophan (Trp), produces Kynurenine (Kyn, Beta-Anthraniloyl-L-Alanine). The accumulation of Kyn and the depletion of Trp arrest T cell growth and induce apoptosis, setting up an immune-tolerant condition, whereas AhR and interferon type I (IFN-I) build a mutual inhibitory loop that also involves NF-kB and limits the innate response. AhR/Kyn binding boosts the production of Interleukin-6 (IL-6), thus reinforcing the inflammatory state and counteracting the IDO-dependent immune tolerance in the later stage of COVID-19. Taken together, these data depict a framework where sufficient clues suggest the possible participation of AhR in the management of COVID-19 inflammation, thus indicating an additional therapeutic target for this disease.
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Affiliation(s)
- Tiziana Guarnieri
- Cell Physiology Laboratory, Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum Università di Bologna, 40126 Bologna, Italy;
- Interuniversity Consortium “Istituto Nazionale Biostrutture e Biosistemi” (INBB–Biostructures and Biosystems National Institute), 00136 Rome, Italy
- Interdepartmental Center for Industrial Research in Life Sciences and Technologies, University of Bologna, 40126 Bologna, Italy
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3
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Guarnieri T, Abruzzo PM, Bolotta A. More than a cell biosensor: aryl hydrocarbon receptor at the intersection of physiology and inflammation. Am J Physiol Cell Physiol 2020; 318:C1078-C1082. [PMID: 32208988 DOI: 10.1152/ajpcell.00493.2019] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Aryl hydrocarbon receptor (AhR), a highly conserved intracellular transcription factor, is activated by a plethora of ligands of both exogenous and endogenous nature. Besides activating xenobiotic-metabolizing enzymes, it is involved in the differentiation and development of hematopoietic, hepatic, nervous and immune systems. More and more data describe its role in the regulation of immune responses and in the onset and progression of inflammation. Particularly, established results view AhR as a downstream target of inflammatory molecules, since its transcription is regulated by the inflammatory cascade. Interleukin 6 (IL-6) has been described to sustain early stages of inflammation and to influence the expression of AhR either directly, following signal transducer and activator of transcription 3 (STAT3) activation, or in combination with other inflammatory mediators, e.g., transforming growth factor-β (TGF-β). In selected inflammatory milieus, once activated, AhR interacts with its targets including the IL-6 promoter, thus originating an autoinflammatory loop. This perspective review brings together evidence that, in some IL-6-driven pathways, AhR is a downstream target that amplifies the duration and extent of inflammation. Considering that many inflammatory mediators can also trigger the activities of AhR as biosensor and activator of xenobiotics metabolism, this issue is of pivotal importance. The individual susceptibly to some environmental ligands of AhR can be probably explained by considering the individual inflammatory state, which could additionally fuel the proinflammatory activity of AhR. Thus, AhR could be considered a transductor of a dynamic, bidirectional connection between internal and external environmental stimuli and the inflammatory response.
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Affiliation(s)
- Tiziana Guarnieri
- Cell Physiology Lab, Department of Biology, Geology and Environmental Sciences, Alma Mater Studiorum-Università di Bologna, Bologna, Italy.,Interuniversity Consortium "Istituto Nazionale Biostrutture e Biosistemi" (INBB-Biostructures and Biosystems National Institute), Rome, Italy
| | - Provvidenza Maria Abruzzo
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum-Università di Bologna, Bologna, Italy
| | - Alessandra Bolotta
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum-Università di Bologna, Bologna, Italy
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4
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Abruzzo PM, Matté A, Bolotta A, Federti E, Ghezzo A, Guarnieri T, Marini M, Posar A, Siciliano A, De Franceschi L, Visconti P. Plasma peroxiredoxin changes and inflammatory cytokines support the involvement of neuro-inflammation and oxidative stress in Autism Spectrum Disorder. J Transl Med 2019; 17:332. [PMID: 31578139 PMCID: PMC6775664 DOI: 10.1186/s12967-019-2076-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 09/21/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND It has been established that children with Autism Spectrum Disorders (ASD) are affected by oxidative stress, the origin of which is still under investigation. In the present work, we evaluated inflammatory and pro-oxidant soluble signature in non-syndromic ASD and age-matched typically developing (TD) control children. METHODS We analyzed leukocyte gene expression of inflammatory cytokines and inflammation/oxidative-stress related molecules in 21 ASD and 20 TD children. Moreover, in another-comparable-group of non-syndromic ASD (N = 22) and TD (N = 21) children, we analyzed for the first time the protein expression of the four members of the antioxidant enzyme family of peroxiredoxins (Prx) in both erythrocyte membranes and in plasma. RESULTS The gene expression of IL6 and of HSP70i, a stress protein, was increased in ASD children. Moreover, gene expression of many inflammatory cytokines and inflammation/oxidative stress-related proteins correlated with clinical features, and appeared to be linked by a complex network of inter-correlations involving the Aryl Hydrocarbon Receptor signaling pathway. In addition, when the study of inter-correlations within the expression pattern of these molecules was extended to include the healthy subjects, the intrinsic physiological relationships of the inflammatory/oxidative stress network emerged. Plasma levels of Prx2 and Prx5 were remarkably increased in ASD compared to healthy controls, while no significant differences were found in red cell Prx levels. CONCLUSIONS Previous findings reported elevated inflammatory cytokines in the plasma of ASD children, without clearly pointing to the presence of neuro-inflammation. On the other hand, the finding of microglia activation in autoptic specimens was clearly suggesting the presence of neuro-inflammation in ASD. Given the role of peroxiredoxins in the protection of brain cells against oxidative stress, the whole of our results, using peripheral data collected in living patients, support the involvement of neuro-inflammation in ASD, and generate a rational for neuro-inflammation as a possible therapeutic target and for plasma Prx5 as a novel indicator of ASD severity.
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Affiliation(s)
- P M Abruzzo
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna School of Medicine, Bologna, Italy.,IRCCS Fondazione Don Carlo Gnocchi, Via A. Capecelatro, 66, 20148, Milan, Italy
| | - A Matté
- Department of Medicine, University of Verona Medical School, Verona, Italy
| | - A Bolotta
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna School of Medicine, Bologna, Italy.,IRCCS Fondazione Don Carlo Gnocchi, Via A. Capecelatro, 66, 20148, Milan, Italy
| | - E Federti
- Department of Medicine, University of Verona Medical School, Verona, Italy
| | - A Ghezzo
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna School of Medicine, Bologna, Italy
| | - T Guarnieri
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - M Marini
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna School of Medicine, Bologna, Italy. .,IRCCS Fondazione Don Carlo Gnocchi, Via A. Capecelatro, 66, 20148, Milan, Italy.
| | - A Posar
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Ugo Foscolo 7, 40123, Bologna, Italy.,Child Neurology and Psychiatry Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, Via Altura, 3, 40139, Bologna, Italy
| | - A Siciliano
- Department of Medicine, University of Verona Medical School, Verona, Italy
| | - L De Franceschi
- Department of Medicine, University of Verona Medical School, Verona, Italy
| | - P Visconti
- Child Neurology and Psychiatry Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, Via Altura, 3, 40139, Bologna, Italy
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5
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Guarnieri T. Non Steroidal Anti Inflammatory Drugs As Gatekeepers Of Colon Carcinoma Highlight New Scenarios Beyond Cyclooxygenases Inhibition. Curr Cancer Drug Targets 2016; 16:186-97. [PMID: 26310524 DOI: 10.2174/1568009615666150827093012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/31/2015] [Accepted: 08/19/2015] [Indexed: 11/22/2022]
Abstract
Epidemiological data suggest that Non Steroidal Anti Inflammatory Drugs (NSAIDs) and Cyclooxygenase 2 (COX2) inhibitors (COXibs) can exert chemopreventive and antitumour effects in many human neoplasia. This is particularly true in colon cancer (CC), where the regular assumption of these molecules has been shown to exert chemopreventive and chemotherapeutic effects. Since the late '90s, there has been a progressive increase in experimental evidence, indicating that in CC the antiproliferative effects of NSAIDs and COXibs could be both dependent on and independent of COXs inhibition, and that these effects do not necessarily exclude each other. This review will examine some of these COX-independent cellular pathways, with a focus on those involved in the inhibition of CC cells proliferation through transcription factors crosstalk.
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Affiliation(s)
- Tiziana Guarnieri
- Dept. of Biology, Geology and Environmental Sciences, School of Sciences, Alma Mater Studiorum Università di Bologna, Italy, zip code: 40126, via Francesco Selmi, 3, Bologna, Italy.
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6
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Goodson WH, Lowe L, Carpenter DO, Gilbertson M, Manaf Ali A, Lopez de Cerain Salsamendi A, Lasfar A, Carnero A, Azqueta A, Amedei A, Charles AK, Collins AR, Ward A, Salzberg AC, Colacci A, Olsen AK, Berg A, Barclay BJ, Zhou BP, Blanco-Aparicio C, Baglole CJ, Dong C, Mondello C, Hsu CW, Naus CC, Yedjou C, Curran CS, Laird DW, Koch DC, Carlin DJ, Felsher DW, Roy D, Brown DG, Ratovitski E, Ryan EP, Corsini E, Rojas E, Moon EY, Laconi E, Marongiu F, Al-Mulla F, Chiaradonna F, Darroudi F, Martin FL, Van Schooten FJ, Goldberg GS, Wagemaker G, Nangami GN, Calaf GM, Williams G, Wolf GT, Koppen G, Brunborg G, Lyerly HK, Krishnan H, Ab Hamid H, Yasaei H, Sone H, Kondoh H, Salem HK, Hsu HY, Park HH, Koturbash I, Miousse IR, Scovassi AI, Klaunig JE, Vondráček J, Raju J, Roman J, Wise JP, Whitfield JR, Woodrick J, Christopher JA, Ochieng J, Martinez-Leal JF, Weisz J, Kravchenko J, Sun J, Prudhomme KR, Narayanan KB, Cohen-Solal KA, Moorwood K, Gonzalez L, Soucek L, Jian L, D'Abronzo LS, Lin LT, Li L, Gulliver L, McCawley LJ, Memeo L, Vermeulen L, Leyns L, Zhang L, Valverde M, Khatami M, Romano MF, Chapellier M, Williams MA, Wade M, Manjili MH, Lleonart ME, Xia M, Gonzalez MJ, Karamouzis MV, Kirsch-Volders M, Vaccari M, Kuemmerle NB, Singh N, Cruickshanks N, Kleinstreuer N, van Larebeke N, Ahmed N, Ogunkua O, Krishnakumar PK, Vadgama P, Marignani PA, Ghosh PM, Ostrosky-Wegman P, Thompson PA, Dent P, Heneberg P, Darbre P, Sing Leung P, Nangia-Makker P, Cheng QS, Robey RB, Al-Temaimi R, Roy R, Andrade-Vieira R, Sinha RK, Mehta R, Vento R, Di Fiore R, Ponce-Cusi R, Dornetshuber-Fleiss R, Nahta R, Castellino RC, Palorini R, Abd Hamid R, Langie SAS, Eltom SE, Brooks SA, Ryeom S, Wise SS, Bay SN, Harris SA, Papagerakis S, Romano S, Pavanello S, Eriksson S, Forte S, Casey SC, Luanpitpong S, Lee TJ, Otsuki T, Chen T, Massfelder T, Sanderson T, Guarnieri T, Hultman T, Dormoy V, Odero-Marah V, Sabbisetti V, Maguer-Satta V, Rathmell WK, Engström W, Decker WK, Bisson WH, Rojanasakul Y, Luqmani Y, Chen Z, Hu Z. Assessing the carcinogenic potential of low-dose exposures to chemical mixtures in the environment: the challenge ahead. Carcinogenesis 2015; 36 Suppl 1:S254-96. [PMID: 26106142 PMCID: PMC4480130 DOI: 10.1093/carcin/bgv039] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Low-dose exposures to common environmental chemicals that are deemed safe individually may be combining to instigate carcinogenesis, thereby contributing to the incidence of cancer. This risk may be overlooked by current regulatory practices and needs to be vigorously investigated. Lifestyle factors are responsible for a considerable portion of cancer incidence worldwide, but credible estimates from the World Health Organization and the International Agency for Research on Cancer (IARC) suggest that the fraction of cancers attributable to toxic environmental exposures is between 7% and 19%. To explore the hypothesis that low-dose exposures to mixtures of chemicals in the environment may be combining to contribute to environmental carcinogenesis, we reviewed 11 hallmark phenotypes of cancer, multiple priority target sites for disruption in each area and prototypical chemical disruptors for all targets, this included dose-response characterizations, evidence of low-dose effects and cross-hallmark effects for all targets and chemicals. In total, 85 examples of chemicals were reviewed for actions on key pathways/mechanisms related to carcinogenesis. Only 15% (13/85) were found to have evidence of a dose-response threshold, whereas 59% (50/85) exerted low-dose effects. No dose-response information was found for the remaining 26% (22/85). Our analysis suggests that the cumulative effects of individual (non-carcinogenic) chemicals acting on different pathways, and a variety of related systems, organs, tissues and cells could plausibly conspire to produce carcinogenic synergies. Additional basic research on carcinogenesis and research focused on low-dose effects of chemical mixtures needs to be rigorously pursued before the merits of this hypothesis can be further advanced. However, the structure of the World Health Organization International Programme on Chemical Safety ‘Mode of Action’ framework should be revisited as it has inherent weaknesses that are not fully aligned with our current understanding of cancer biology.
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Affiliation(s)
- William H Goodson
- California Pacific Medical Center Research Institute, 2100 Webster Street #401, San Francisco, CA 94115, USA, Getting to Know Cancer, Room 229A, 36 Arthur Street, Truro, Nova Scotia B2N 1X5, Canada, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4AP, UK, Institute for Health and the Environment, University at Albany, 5 University Pl., Rensselaer, NY 12144, USA, Getting to Know Cancer, Guelph N1G 1E4, Canada, School of Biotechnology, Faculty of Agriculture Biotechnology and Food Sciences, Sultan Zainal Abidin University, Tembila Campus, 22200 Besut, Terengganu, Malaysia, Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Navarra, Pamplona 31008, Spain, Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, State University of New Jersey, Piscataway, NJ 08854, USA, Instituto de Biomedicina de Sevilla, Consejo Superior de Investigaciones Cientificas. Hospital Universitario Virgen del Rocio, Univ. de Sevilla., Avda Manuel Siurot sn. 41013 Sevilla, Spain, Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy, School of Biological Sciences, University of Reading, Hopkins Building, Reading, Berkshire RG6 6UB, UK, Department of Nutrition, University of Oslo, Oslo, Norway, Department of Biochemistry and Biology, University of Bath, Claverton Down, Bath BA2 7AY, UK, Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy, Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo N-0403, Norway, Planet Biotechnologies Inc., St Albert, Alberta T8N 5K4, Canada, Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40508, USA, Spanish National Cancer Research Centre, CNI
| | - Leroy Lowe
- Getting to Know Cancer, Room 229A, 36 Arthur Street, Truro, Nova Scotia B2N 1X5, Canada, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4AP, UK
| | - David O Carpenter
- Institute for Health and the Environment, University at Albany, 5 University Pl., Rensselaer, NY 12144, USA
| | | | - Abdul Manaf Ali
- School of Biotechnology, Faculty of Agriculture Biotechnology and Food Sciences, Sultan Zainal Abidin University, Tembila Campus, 22200 Besut, Terengganu, Malaysia
| | | | - Ahmed Lasfar
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, State University of New Jersey, Piscataway, NJ 08854, USA
| | - Amancio Carnero
- Instituto de Biomedicina de Sevilla, Consejo Superior de Investigaciones Cientificas. Hospital Universitario Virgen del Rocio, Univ. de Sevilla., Avda Manuel Siurot sn. 41013 Sevilla, Spain
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Navarra, Pamplona 31008, Spain
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy
| | - Amelia K Charles
- School of Biological Sciences, University of Reading, Hopkins Building, Reading, Berkshire RG6 6UB, UK
| | | | - Andrew Ward
- Department of Biochemistry and Biology, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Anna C Salzberg
- Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy
| | - Ann-Karin Olsen
- Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo N-0403, Norway
| | - Arthur Berg
- Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Barry J Barclay
- Planet Biotechnologies Inc., St Albert, Alberta T8N 5K4, Canada
| | - Binhua P Zhou
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40508, USA
| | - Carmen Blanco-Aparicio
- Spanish National Cancer Research Centre, CNIO, Melchor Fernandez Almagro, 3, 28029 Madrid, Spain
| | - Carolyn J Baglole
- Department of Medicine, McGill University, Montreal, Quebec H4A 3J1, Canada
| | - Chenfang Dong
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40508, USA
| | - Chiara Mondello
- Istituto di Genetica Molecolare, CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - Chia-Wen Hsu
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Bethesda, MD 20892-3375, USA
| | - Christian C Naus
- Department of Cellular and Physiological Sciences, Life Sciences Institute, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Clement Yedjou
- Department of Biology, Jackson State University, Jackson, MS 39217, USA
| | - Colleen S Curran
- Department of Molecular and Environmental Toxicology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Dale W Laird
- Department of Anatomy and Cell Biology, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Daniel C Koch
- Stanford University Department of Medicine, Division of Oncology, Stanford, CA 94305, USA
| | - Danielle J Carlin
- Superfund Research Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27560, USA
| | - Dean W Felsher
- Department of Medicine, Oncology and Pathology, Stanford University, Stanford, CA 94305, USA
| | - Debasish Roy
- Department of Natural Science, The City University of New York at Hostos Campus, Bronx, NY 10451, USA
| | - Dustin G Brown
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523-1680, USA
| | - Edward Ratovitski
- Department of Head and Neck Surgery/Head and Neck Cancer Research, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523-1680, USA
| | - Emanuela Corsini
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Emilio Rojas
- Department of Genomic Medicine and Environmental Toxicology, Institute for Biomedical Research, National Autonomous University of Mexico, Mexico City 04510, México
| | - Eun-Yi Moon
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea
| | - Ezio Laconi
- Department of Biomedical Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Fabio Marongiu
- Department of Biomedical Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Fahd Al-Mulla
- Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | - Ferdinando Chiaradonna
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy, SYSBIO Centre of Systems Biology, Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Firouz Darroudi
- Human Safety and Environmental Research, Department of Health Sciences, College of North Atlantic, Doha 24449, State of Qatar
| | - Francis L Martin
- Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4AP, UK
| | - Frederik J Van Schooten
- Department of Toxicology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht 6200, The Netherlands
| | - Gary S Goldberg
- Department of Molecular Biology, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Gerard Wagemaker
- Hacettepe University, Center for Stem Cell Research and Development, Ankara 06640, Turkey
| | - Gladys N Nangami
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA
| | - Gloria M Calaf
- Center for Radiological Research, Columbia University Medical Center, New York, NY 10032, USA, Instituto de Alta Investigacion, Universidad de Tarapaca, Arica, Chile
| | - Graeme Williams
- School of Biological Sciences, University of Reading, Reading, RG6 6UB, UK
| | - Gregory T Wolf
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Gudrun Koppen
- Environmental Risk and Health Unit, Flemish Institute for Technological Research, 2400 Mol, Belgium
| | - Gunnar Brunborg
- Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo N-0403, Norway
| | - H Kim Lyerly
- Department of Surgery, Pathology, Immunology, Duke University Medical Center, Durham, NC 27710, USA
| | - Harini Krishnan
- Department of Molecular Biology, School of Osteopathic Medicine, Rowan University, Stratford, NJ 08084, USA
| | - Hasiah Ab Hamid
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, 43400 Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Hemad Yasaei
- Department of Life Sciences, College of Health and Life Sciences and the Health and Environment Theme, Institute of Environment, Health and Societies, Brunel University Kingston Lane, Uxbridge, Middlesex UB8 3PH, UK
| | - Hideko Sone
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibraki 3058506, Japan
| | - Hiroshi Kondoh
- Department of Geriatric Medicine, Kyoto University Hospital 54 Kawaharacho, Shogoin, Sakyo-ku Kyoto, 606-8507, Japan
| | - Hosni K Salem
- Department of Urology, Kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 11559, Egypt
| | - Hsue-Yin Hsu
- Department of Life Sciences, Tzu-Chi University, Hualien 970, Taiwan
| | - Hyun Ho Park
- School of Biotechnology, Yeungnam University, Gyeongbuk 712-749, South Korea
| | - Igor Koturbash
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Isabelle R Miousse
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - A Ivana Scovassi
- Istituto di Genetica Molecolare, CNR, Via Abbiategrasso 207, 27100 Pavia, Italy
| | - James E Klaunig
- Department of Environmental Health, Indiana University, School of Public Health, Bloomington, IN 47405, USA
| | - Jan Vondráček
- Department of Cytokinetics, Institute of Biophysics Academy of Sciences of the Czech Republic, Brno, CZ-61265, Czech Republic
| | - Jayadev Raju
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Jesse Roman
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA, Robley Rex VA Medical Center, Louisville, KY 40202, USA
| | - John Pierce Wise
- Department of Applied Medical Sciences, University of Southern Maine, 96 Falmouth St., Portland, ME 04104, USA
| | - Jonathan R Whitfield
- Mouse Models of Cancer Therapies Group, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Jordan Woodrick
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20057, USA
| | - Joseph A Christopher
- Cancer Research UK. Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
| | - Josiah Ochieng
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA
| | | | - Judith Weisz
- Departments of Obstetrics and Gynecology and Pathology, Pennsylvania State University College of Medicine, Hershey PA 17033, USA
| | - Julia Kravchenko
- Department of Surgery, Pathology, Immunology, Duke University Medical Center, Durham, NC 27710, USA
| | - Jun Sun
- Department of Biochemistry, Rush University, Chicago, IL 60612, USA
| | - Kalan R Prudhomme
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA
| | | | - Karine A Cohen-Solal
- Department of Medicine/Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA
| | - Kim Moorwood
- Department of Biochemistry and Biology, University of Bath, Claverton Down, Bath BA2 7AY, UK
| | - Laetitia Gonzalez
- Laboratory for Cell Genetics, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Laura Soucek
- Mouse Models of Cancer Therapies Group, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain, Catalan Institution for Research and Advanced Studies (ICREA), Barcelona 08010, Spain
| | - Le Jian
- School of Public Health, Curtin University, Bentley, WA 6102, Australia, Department of Urology, University of California Davis, Sacramento, CA 95817, USA
| | - Leandro S D'Abronzo
- Department of Urology, University of California Davis, Sacramento, CA 95817, USA
| | - Liang-Tzung Lin
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Lin Li
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, The People's Republic of China
| | - Linda Gulliver
- Faculty of Medicine, University of Otago, Dunedin 9054, New Zealand
| | - Lisa J McCawley
- Department of Biomedical Engineering and Cancer Biology, Vanderbilt University, Nashville, TN 37235, USA
| | - Lorenzo Memeo
- Department of Experimental Oncology, Mediterranean Institute of Oncology, Via Penninazzo 7, Viagrande (CT) 95029, Italy
| | - Louis Vermeulen
- Center for Experimental Molecular Medicine, Academic Medical Center, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands
| | - Luc Leyns
- Laboratory for Cell Genetics, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720-7360, USA
| | - Mahara Valverde
- Department of Genomic Medicine and Environmental Toxicology, Institute for Biomedical Research, National Autonomous University of Mexico, Mexico City 04510, México
| | - Mahin Khatami
- Inflammation and Cancer Research, National Cancer Institute (NCI) (Retired), National Institutes of Health, Bethesda, MD 20892, USA
| | - Maria Fiammetta Romano
- Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy
| | - Marion Chapellier
- Centre De Recherche En Cancerologie, De Lyon, Lyon, U1052-UMR5286, France
| | - Marc A Williams
- United States Army Institute of Public Health, Toxicology Portfolio-Health Effects Research Program, Aberdeen Proving Ground, Edgewood, MD 21010-5403, USA
| | - Mark Wade
- Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Via Adamello 16, 20139 Milano, Italy
| | - Masoud H Manjili
- Department of Microbiology and Immunology, Virginia Commonwealth University, Massey Cancer Center, Richmond, VA 23298, USA
| | - Matilde E Lleonart
- Institut De Recerca Hospital Vall D'Hebron, Passeig Vall d'Hebron, 119-129, 08035 Barcelona, Spain
| | - Menghang Xia
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Bethesda, MD 20892-3375, USA
| | - Michael J Gonzalez
- University of Puerto Rico, Medical Sciences Campus, School of Public Health, Nutrition Program, San Juan 00921, Puerto Rico
| | - Michalis V Karamouzis
- Department of Biological Chemistry, Medical School, University of Athens, Institute of Molecular Medicine and Biomedical Research, 10676 Athens, Greece
| | | | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy
| | - Nancy B Kuemmerle
- Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Neetu Singh
- Advanced Molecular Science Research Centre (Centre for Advanced Research), King George's Medical University, Lucknow, Uttar Pradesh 226 003, India
| | - Nichola Cruickshanks
- Departments of Neurosurgery and Biochemistry and Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Nicole Kleinstreuer
- Integrated Laboratory Systems Inc., in support of the National Toxicology Program Interagency Center for the Evaluation of Alternative Toxicological Methods, RTP, NC 27709, USA
| | - Nik van Larebeke
- Analytische, Milieu en Geochemie, Vrije Universiteit Brussel, Brussel B1050, Belgium
| | - Nuzhat Ahmed
- Department of Obstetrics and Gynecology, University of Melbourne, Victoria 3052, Australia
| | - Olugbemiga Ogunkua
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA
| | - P K Krishnakumar
- Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 3126, Saudi Arabia
| | - Pankaj Vadgama
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Paola A Marignani
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Paramita M Ghosh
- Department of Urology, University of California Davis, Sacramento, CA 95817, USA
| | - Patricia Ostrosky-Wegman
- Department of Genomic Medicine and Environmental Toxicology, Institute for Biomedical Research, National Autonomous University of Mexico, Mexico City 04510, México
| | - Patricia A Thompson
- Department of Pathology, Stony Brook School of Medicine, Stony Brook University, The State University of New York, Stony Brook, NY 11794-8691, USA
| | - Paul Dent
- Departments of Neurosurgery and Biochemistry and Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Petr Heneberg
- Charles University in Prague, Third Faculty of Medicine, CZ-100 00 Prague 10, Czech Republic
| | - Philippa Darbre
- School of Biological Sciences, The University of Reading, Whiteknights, Reading RG6 6UB, England
| | - Po Sing Leung
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, The People's Republic of China
| | | | - Qiang Shawn Cheng
- Computer Science Department, Southern Illinois University, Carbondale, IL 62901, USA
| | - R Brooks Robey
- White River Junction Veterans Affairs Medical Center, White River Junction, VT 05009, USA, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Rabeah Al-Temaimi
- Human Genetics Unit, Department of Pathology, Faculty of Medicine, Kuwait University, Jabriya 13110, Kuwait
| | - Rabindra Roy
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20057, USA
| | - Rafaela Andrade-Vieira
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Ranjeet K Sinha
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Rekha Mehta
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Renza Vento
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies, Polyclinic Plexus, University of Palermo, Palermo 90127, Italy , Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, PA 19122, USA
| | - Riccardo Di Fiore
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies, Polyclinic Plexus, University of Palermo, Palermo 90127, Italy
| | | | - Rita Dornetshuber-Fleiss
- Department of Pharmacology and Toxicology, University of Vienna, Vienna A-1090, Austria, Institute of Cancer Research, Department of Medicine, Medical University of Vienna, Wien 1090, Austria
| | - Rita Nahta
- Departments of Pharmacology and Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, GA 30322, USA
| | - Robert C Castellino
- Division of Hematology and Oncology, Department of Pediatrics, Children's Healthcare of Atlanta, GA 30322, USA, Department of Pediatrics, Emory University School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Roberta Palorini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy, SYSBIO Centre of Systems Biology, Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
| | - Roslida Abd Hamid
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, 43400 Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Sabine A S Langie
- Environmental Risk and Health Unit, Flemish Institute for Technological Research, 2400 Mol, Belgium
| | - Sakina E Eltom
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA
| | - Samira A Brooks
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Sandra Ryeom
- Department of Cancer Biology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Sandra S Wise
- Department of Applied Medical Sciences, University of Southern Maine, 96 Falmouth St., Portland, ME 04104, USA
| | - Sarah N Bay
- Program in Genetics and Molecular Biology, Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA
| | - Shelley A Harris
- Population Health and Prevention, Research, Prevention and Cancer Control, Cancer Care Ontario, Toronto, Ontario, M5G 2L7, Canada, Departments of Epidemiology and Occupational and Environmental Health, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, M5T 3M7, Canada
| | - Silvana Papagerakis
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Simona Romano
- Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy
| | - Sofia Pavanello
- Department of Cardiac, Thoracic and Vascular Sciences, Unit of Occupational Medicine, University of Padova, Padova 35128, Italy
| | - Staffan Eriksson
- Department of Anatomy, Physiology and Biochemistry, The Swedish University of Agricultural Sciences, PO Box 7011, VHC, Almas Allé 4, SE-756 51, Uppsala, Sweden
| | - Stefano Forte
- Department of Experimental Oncology, Mediterranean Institute of Oncology, Via Penninazzo 7, Viagrande (CT) 95029, Italy
| | - Stephanie C Casey
- Stanford University Department of Medicine, Division of Oncology, Stanford, CA 94305, USA
| | - Sudjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Tae-Jin Lee
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu 705-717, South Korea
| | - Takemi Otsuki
- Department of Hygiene, Kawasaki Medical School, Matsushima Kurashiki, Okayama 701-0192, Japan
| | - Tao Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, United States Food and Drug Administration, Jefferson, AR 72079, USA
| | - Thierry Massfelder
- INSERM U1113, team 3 'Cell Signalling and Communication in Kidney and Prostate Cancer', University of Strasbourg, Faculté de Médecine, 67085 Strasbourg, France
| | - Thomas Sanderson
- INRS-Institut Armand-Frappier, 531 Boulevard des Prairies, Laval, QC H7V 1B7, Canada
| | - Tiziana Guarnieri
- Department of Biology, Geology and Environmental Sciences, Alma Mater Studiorum Università di Bologna, Via Francesco Selmi, 3, 40126 Bologna, Italy, Center for Applied Biomedical Research, S. Orsola-Malpighi University Hospital, Via Massarenti, 9, 40126 Bologna, Italy, National Institute of Biostructures and Biosystems, Viale Medaglie d' Oro, 305, 00136 Roma, Italy
| | - Tove Hultman
- Department of Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, PO Box 7028, 75007 Uppsala, Sweden
| | - Valérian Dormoy
- INSERM U1113, team 3 'Cell Signalling and Communication in Kidney and Prostate Cancer', University of Strasbourg, Faculté de Médecine, 67085 Strasbourg, France, Department of Cell and Developmental Biology, University of California, Irvine, CA 92697, USA
| | - Valerie Odero-Marah
- Department of Biology/Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA
| | - Venkata Sabbisetti
- Harvard Medical School/Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Veronique Maguer-Satta
- United States Army Institute of Public Health, Toxicology Portfolio-Health Effects Research Program, Aberdeen Proving Ground, Edgewood, MD 21010-5403, USA
| | - W Kimryn Rathmell
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Wilhelm Engström
- Department of Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, PO Box 7028, 75007 Uppsala, Sweden
| | | | - William H Bisson
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Yunus Luqmani
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait and
| | - Zhenbang Chen
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208, USA
| | - Zhiwei Hu
- Department of Surgery, The Ohio State University College of Medicine, The James Comprehensive Cancer Center, Columbus, OH 43210, USA
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7
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Thompson PA, Khatami M, Baglole CJ, Sun J, Harris SA, Moon EY, Al-Mulla F, Al-Temaimi R, Brown DG, Colacci A, Mondello C, Raju J, Ryan EP, Woodrick J, Scovassi AI, Singh N, Vaccari M, Roy R, Forte S, Memeo L, Salem HK, Amedei A, Hamid RA, Lowe L, Guarnieri T, Bisson WH. Environmental immune disruptors, inflammation and cancer risk. Carcinogenesis 2015; 36 Suppl 1:S232-53. [PMID: 26106141 DOI: 10.1093/carcin/bgv038] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
An emerging area in environmental toxicology is the role that chemicals and chemical mixtures have on the cells of the human immune system. This is an important area of research that has been most widely pursued in relation to autoimmune diseases and allergy/asthma as opposed to cancer causation. This is despite the well-recognized role that innate and adaptive immunity play as essential factors in tumorigenesis. Here, we review the role that the innate immune cells of inflammatory responses play in tumorigenesis. Focus is placed on the molecules and pathways that have been mechanistically linked with tumor-associated inflammation. Within the context of chemically induced disturbances in immune function as co-factors in carcinogenesis, the evidence linking environmental toxicant exposures with perturbation in the balance between pro- and anti-inflammatory responses is reviewed. Reported effects of bisphenol A, atrazine, phthalates and other common toxicants on molecular and cellular targets involved in tumor-associated inflammation (e.g. cyclooxygenase/prostaglandin E2, nuclear factor kappa B, nitric oxide synthesis, cytokines and chemokines) are presented as example chemically mediated target molecule perturbations relevant to cancer. Commentary on areas of additional research including the need for innovation and integration of systems biology approaches to the study of environmental exposures and cancer causation are presented.
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Affiliation(s)
- Patricia A Thompson
- Department of Pathology, Stony Brook Medical School, Stony Brook, NY 11794, USA, Inflammation and Cancer Research, National Cancer Institute (NCI) (Retired), NIH, Bethesda, MD 20817, USA, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada, Department of Biochemistry, Rush University, Chicago, IL 60612, USA, Prevention and Cancer Control, Cancer Care Ontario, 620 University Avenue, Toronto, Ontario M5G 2L3, Canada, Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Republic of South Korea, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Environmental and Radiological Health Sciences, Colorado State University, Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy, The Institute of Molecular Genetics, National Research Council, 27100 Pavia, Italy, Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada, Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20057, USA, Advanced Molecular Science Research Centre, King George's Medical University, Lucknow, Uttar Pradesh 226003, India, Mediterranean Institute of Oncology, 95029 Viagrande, Italy, Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt, Department of Experimental and Clinical Medicine, University of Firenze, 50134 Florence, Italy, Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia, Serdang, Selangor 43400, Malaysia, Getting to Know Cancer, Room 229A, 36 Arthur St, Truro, Nova Scotia B2N 1X5, Canada Department of Biology, Geology and Environmental Sciences, Alma Mater Studiorum Università di Bologna, Via Francesco Selmi, 3, 40126 Bologna, Italy Center for Appl
| | - Mahin Khatami
- Inflammation and Cancer Research, National Cancer Institute (NCI) (Retired), NIH, Bethesda, MD 20817, USA
| | - Carolyn J Baglole
- Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - Jun Sun
- Department of Biochemistry, Rush University, Chicago, IL 60612, USA
| | - Shelley A Harris
- Prevention and Cancer Control, Cancer Care Ontario, 620 University Avenue, Toronto, Ontario M5G 2L3, Canada
| | - Eun-Yi Moon
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Republic of South Korea
| | - Fahd Al-Mulla
- Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | | | - Dustin G Brown
- Department of Environmental and Radiological Health Sciences, Colorado State University, Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy
| | - Chiara Mondello
- The Institute of Molecular Genetics, National Research Council, 27100 Pavia, Italy
| | - Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University, Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Jordan Woodrick
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20057, USA
| | - A Ivana Scovassi
- The Institute of Molecular Genetics, National Research Council, 27100 Pavia, Italy
| | - Neetu Singh
- Advanced Molecular Science Research Centre, King George's Medical University, Lucknow, Uttar Pradesh 226003, India
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, 40126 Bologna, Italy
| | - Rabindra Roy
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC 20057, USA
| | - Stefano Forte
- Mediterranean Institute of Oncology, 95029 Viagrande, Italy
| | - Lorenzo Memeo
- Mediterranean Institute of Oncology, 95029 Viagrande, Italy
| | - Hosni K Salem
- Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, 50134 Florence, Italy
| | - Roslida A Hamid
- Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia, Serdang, Selangor 43400, Malaysia
| | - Leroy Lowe
- Getting to Know Cancer, Room 229A, 36 Arthur St, Truro, Nova Scotia B2N 1X5, Canada
| | - Tiziana Guarnieri
- Department of Biology, Geology and Environmental Sciences, Alma Mater Studiorum Università di Bologna, Via Francesco Selmi, 3, 40126 Bologna, Italy Center for Applied Biomedical Research, S. Orsola-Malpighi University Hospital, Via Massarenti, 9, 40126 Bologna, Italy, National Institute of Biostructures and Biosystems, Viale Medaglie d' Oro, 305, 00136 Roma, Italy and
| | - William H Bisson
- Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, Corvallis, Oregon 97331, USA
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8
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Stefani C, Liverani CA, Bianco V, Penna C, Guarnieri T, Comparetto C, Monti E, Valente I, Pieralli AL, Fiaschi C, Origoni M. Spontaneous regression of low-grade cervical intraepithelial lesions is positively improved by topical bovine colostrum preparations (GINEDIE®). A multicentre, observational, italian pilot study. Eur Rev Med Pharmacol Sci 2014; 18:728-733. [PMID: 24668716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES Human papillomavirus (HPV) is the causal agent of cervical cancer. The great majority of abnormal Pap test results - almost 90% - is referrable to either atypical squamous intraepithelial lesion or CIN1. For these lesions, worldwide agreement exists concerning the high rate - ranging from 40% to 70% - of spontaneous regression over a period of 1-5 years. Host's immune response is a key point influencing the natural history of these conditions. Bovine colostrum is a natural agent positively promoting several immune activities against bacterial and viral agents. The aim of this report was to evaluate the potential positive effect of bovine colostrum-containing vaginal tablets administered to CIN1 diagnosed patients in a prospective trial in regards to spontaneous regression rate. PATIENTS AND METHODS A series of 256 consecutive patients with histologically proven CIN1 recruited in a multicentre, observational, Italian study. Patients have been enrolled in a 24-weeks protocol of treatment and re-tested at the end of the study. Rates of regression have been recorded. RESULTS Overall regression rate to a negative histology at the end of the 6 month follow up was 75.5%. CONCLUSIONS Regression to normal histology was observed in a very high rate of cases in a very short period compared to the natural history of these lesions. CIN1 patients could benefit from bovine colostrum topical administration in terms of significantly shortening the regression time.
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Affiliation(s)
- C Stefani
- Department of Obstetrics and Gynecology, Vita Salute San Raffaele University School of Medicine, Milan, Italy.
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9
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Papi A, Storci G, Guarnieri T, De Carolis S, Bertoni S, Avenia N, Sanguinetti A, Sidoni A, Santini D, Ceccarelli C, Taffurelli M, Orlandi M, Bonafé M. Peroxisome proliferator activated receptor-α/hypoxia inducible factor-1α interplay sustains carbonic anhydrase IX and apoliprotein E expression in breast cancer stem cells. PLoS One 2013; 8:e54968. [PMID: 23372804 PMCID: PMC3556000 DOI: 10.1371/journal.pone.0054968] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 12/17/2012] [Indexed: 12/13/2022] Open
Abstract
AIMS Cancer stem cell biology is tightly connected to the regulation of the pro-inflammatory cytokine network. The concept of cancer stem cells "inflammatory addiction" leads to envisage the potential role of anti-inflammatory molecules as new anti-cancer targets. Here we report on the relationship between nuclear receptors activity and the modulation of the pro-inflammatory phenotype in breast cancer stem cells. METHODS Breast cancer stem cells were expanded as mammospheres from normal and tumor human breast tissues and from tumorigenic (MCF7) and non tumorigenic (MCF10) human breast cell lines. Mammospheres were exposed to the supernatant of breast tumor and normal mammary gland tissue fibroblasts. RESULTS In mammospheres exposed to the breast tumor fibroblasts supernatant, autocrine tumor necrosis factor-α signalling engenders the functional interplay between peroxisome proliferator activated receptor-α and hypoxia inducible factor-1α (PPARα/HIF1α). The two proteins promote mammospheres formation and enhance each other expression via miRNA130b/miRNA17-5p-dependent mechanism which is antagonized by PPARγ. Further, the PPARα/HIF1α interplay regulates the expression of the pro-inflammatory cytokine interleukin-6, the hypoxia survival factor carbonic anhydrase IX and the plasma lipid carrier apolipoprotein E. CONCLUSION Our data demonstrate the importance of exploring the role of nuclear receptors (PPARα/PPARγ) in the regulation of pro-inflammatory pathways, with the aim to thwart breast cancer stem cells functioning.
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Affiliation(s)
- Alessio Papi
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Gianluca Storci
- Department of Experimental, Diagnostic, and Specialty Medicine, University of Bologna, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Tiziana Guarnieri
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi University Hospital, Bologna, Italy
- National Biostructures and Biosystems Institute (INBB), Rome, Italy
| | - Sabrina De Carolis
- Department of Experimental, Diagnostic, and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Sara Bertoni
- Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Nicola Avenia
- Department of Surgical Sciences, Radiology and Dentistry, University of Perugia, Perugia, Italy
| | - Alessandro Sanguinetti
- Department of Surgical Sciences, Radiology and Dentistry, University of Perugia, Perugia, Italy
| | - Angelo Sidoni
- Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy
| | - Donatella Santini
- Department of Radiology and Histo-cytopathology, St. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Claudio Ceccarelli
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Mario Taffurelli
- Department of Clinical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marina Orlandi
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Massimiliano Bonafé
- Department of Experimental, Diagnostic, and Specialty Medicine, University of Bologna, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi University Hospital, Bologna, Italy
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10
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Guarnieri T, Virgili M, Villani L, Facchinetti F, Contestabile A, Migani P. Pharmacological manipulation of the NMDA receptor differentially protects from systemic kainic acid neuropathology: evaluation through ornithine decarboxylase induction, morphology and GFAP immunohistochemistry. Restor Neurol Neurosci 2012; 5:327-35. [PMID: 21551719 DOI: 10.3233/rnn-1993-55603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The excitotoxic brain damage caused by systemic administration of kainic acid requires the activation of N-methyl-D-aspartate (NMDA) receptors in order to fully express its neurotoxic potency. We have tested the relative efficacy of different manipulations of the NMDA receptor on morphological, immunohistochemical and neurochemical parameters in this experimental model. A competitive (CGP 39551) and a non-competitive (MK 801) antagonist of the NMDA receptor, granted full protection against neuronal degeneration and consequent glial proliferation in the hippocampus and olfactory cortex, two regions severely affected by systemic administration of kainic acid. In addition, CGP 39551 completely counteracted the dramatic induction of the enzyme ornithine decarboxylase which occurs shortly after kainic acid administration. Systemic administration of high amounts of MgSO4 concomitantly and after kainic acid injection, appeared to partially prevent neuronal degeneration but had no clear effects on glial reaction and ornithine decarboxylase induction. Finally administration of an antagonist of the polyamine site present in the NMDA receptor (SL 82.0715), did not appear to have any protective effect at the dose used here. The present results help to better understand the ways by which it could be possible to counteract excitotoxic brain injuries.
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Affiliation(s)
- T Guarnieri
- Department of Biology, University of Bologna (Italy)
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11
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Dal Canto M, Coticchio G, Mignini Renzini M, Guarnieri T, De Ponti E, Fadini R. Comparative analysis of the obstetric and perinatal outcome of children born from oocyte in vitro maturation and controlled ovarian stimulation cycles. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Tavolari S, Munarini A, Storci G, Laufer S, Chieco P, Guarnieri T. The decrease of cell membrane fluidity by the non-steroidal anti-inflammatory drug Licofelone inhibits epidermal growth factor receptor signalling and triggers apoptosis in HCA-7 colon cancer cells. Cancer Lett 2012; 321:187-94. [DOI: 10.1016/j.canlet.2012.02.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 12/31/2011] [Accepted: 02/06/2012] [Indexed: 10/14/2022]
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13
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Veltri A, Guarnieri T, Gazzera C, Busso M, Solitro F, Fora G, Racca P. Long-term outcome of radiofrequency thermal ablation (RFA) of liver metastases from colorectal cancer (CRC): size as the leading prognostic factor for survival. Radiol Med 2012; 117:1139-51. [PMID: 22430677 DOI: 10.1007/s11547-012-0803-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2011] [Accepted: 07/14/2011] [Indexed: 12/14/2022]
Abstract
PURPOSE The aim of this study was to review some prognostic factors for survival after radiofrequency ablation (RFA) of metastases from colorectal cancer (CRC). MATERIALS AND METHODS From 1996 to 2009, 262 patients with metastases from CRC were treated with RFA. Fourteen were lost to follow-up. The following predictors were analysed in the remaining 248: synchronous/metachronous metastases, single/multiple metastases, diameter of largest metastasis and absence/presence of extrahepatic metastases. Survival was measured from the date of metastasis diagnosis and from the date of RFA. RESULTS Survival at 1, 2, 3 and 5 years was 93%, 78%, 62% and 35% from metastasis diagnosis, and 84%, 59%, 43% and 23% from the date of RFA. Median survival was 41 months in patients with largest metastasis ≤3 cm and 21.7 months for those with metastases >3 cm (p=0.0001); survival increased to 45.2 months in patients with largest metastasis ≤2.5 cm and fell to 18.5 months in those with metastasis >3.5 cm. Median survival of patients with extrahepatic metastases was significantly lower than that of patients without extrahepatic disease (23.3 vs. 32.6 months, p=0.018). CONCLUSIONS In light of our long-term results obtained with commonly used equipment, small lesion size (diameter of largest lesion ≤3 or 2.5 cm) proved to be the most favourable prognostic factor for survival in patients with CRC metastases to the liver treated with RFA. This conclusion is probably related to the possibility of obtaining radical ablation and points to the usefulness of devices allowing ablation of larger volumes. In the presence of extrahepatic metastases, RFA has less impact on survival, even though it is potentially useful in patients at a higher risk of death due to hepatic rather than extrahepatic metastases.
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Affiliation(s)
- A Veltri
- Istituto di Radiologia, Università di Torino, Facoltà San Luigi Gonzaga, Regione Gonzole 10, 10043, Orbassano Torino, Italy.
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14
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Papi A, Guarnieri T, Storci G, Santini D, Ceccarelli C, Taffurelli M, De Carolis S, Avenia N, Sanguinetti A, Sidoni A, Orlandi M, Bonafé M. Nuclear receptors agonists exert opposing effects on the inflammation dependent survival of breast cancer stem cells. Cell Death Differ 2012; 229:1595-606. [PMID: 22261616 DOI: 10.1002/jcp.24601] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 03/03/2014] [Indexed: 12/19/2022] Open
Abstract
Recent literature highlights the importance of pro-inflammatory cytokines in the biology of breast cancer stem cells (CSCs), unraveling differences with respect to their normal counterparts. Expansion of mammospheres (MS) is a valuable tool for the in vitro study of normal and cancer mammary gland stem cells. Here, we expanded MSs from human breast cancer and normal mammary gland tissues, as well from tumorigenic (MCF7) and non-tumorigenic (MCF10) breast cell lines. We observed that agonists for the retinoid X receptor (6-OH-11-O-hydroxyphenanthrene), retinoic acid receptor (all-trans retinoic acid (RA)) and peroxisome proliferator-activated receptor (PPAR)-γ (pioglitazone (PGZ)), reduce the survival of MS generated from breast cancer tissues and MCF7 cells, but not from normal mammary gland or MCF10 cells. This phenomenon is paralleled by the hampering of pro-inflammatory Nuclear Factor-κB (NF-κB)/Interleukin-6 (IL6) axis that is hyperactive in breast cancer-derived MS. The hindrance of such pathway associates with the downregulation of MS regulatory genes (SLUG, Notch3, Jagged1) and with the upregulation of the differentiation markers estrogen receptor-α and keratin18. At variance, the PPARα agonist Wy14643 promotes MS formation, upregulating NF-κB/IL6 axis and MS regulatory genes. These data reveal that nuclear receptors agonists (6-OH-11-O-hydroxyphenanthrene, RA, PGZ) reduce the inflammation dependent survival of breast CSCs and that PPARα agonist Wy14643 exerts opposite effects on this phenotype.
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Affiliation(s)
- A Papi
- Department of Evolutionary Experimental Biology, University of Bologna, Italy
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15
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Mignini Renzini M, Dal Canto M, Coticchio G, Novara P, Turchi D, Lain M, Guarnieri T, Brambillasca F, Fadini R, Lash GE, Innes BA, Drury JA, Quenby S, Bulmer JN, Goddijn M, Boogaard van den E, Scheenjes E, Kremer JAM, Veen van der F, Hermens RPMG, Vansenne F, De Borgie CAJM, Snijder S, Redeker EJW, Van Maarle MC, Wouters CH, Bruggenwirth HT, Van der Veen F, Bossuyt PMM, Goddijn M, Ledger W, Alsbjerg B, Tomas C, Martikainen H, Humaidan P. SESSION 05: EARLY PREGNANCY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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16
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Storci G, Sansone P, Mari S, D'Uva G, Tavolari S, Guarnieri T, Taffurelli M, Ceccarelli C, Santini D, Chieco P, Marcu KB, Bonafè M. TNFalpha up-regulates SLUG via the NF-kappaB/HIF1alpha axis, which imparts breast cancer cells with a stem cell-like phenotype. J Cell Physiol 2010; 225:682-91. [PMID: 20509143 DOI: 10.1002/jcp.22264] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Extracellular and intracellular mediators of inflammation, such as tumor necrosis factor alpha (TNFα) and NF-kappaB (NF-κB), play major roles in breast cancer pathogenesis, progression and relapse. SLUG, a mediator of the epithelial-mesenchymal transition process, is over-expressed in CD44(+)/CD24(-) tumor initiating breast cancer cells and in basal-like carcinoma, a subtype of aggressive breast cancer endowed with a stem cell-like gene expression profile. Cancer stem cells also over-express members of the pro-inflammatory NF-κB network, but their functional relationship with SLUG expression in breast cancer cells remains unclear. Here, we show that TNFα treatment of human breast cancer cells up-regulates SLUG with a dependency on canonical NF-κB/HIF1α signaling, which is strongly enhanced by p53 inactivation. Moreover, SLUG up-regulation engenders breast cancer cells with stem cell-like properties including enhanced expression of CD44 and Jagged-1 in conjunction with estrogen receptor alpha down-regulation, growth as mammospheres, and extracellular matrix invasiveness. Our results reveal a molecular mechanism whereby TNFα, a major pro-inflammatory cytokine, imparts breast cancer cells with stem cell-like features, which are connected to increased tumor aggressiveness.
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Affiliation(s)
- Gianluca Storci
- Center for Applied Biomedical Research (CRBA), St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
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17
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Ocal P, Sahmay S, Irez T, Senol H, Cepni I, Purisa S, Lin W, Liu X, Donjacour A, Maltepe E, Rinaudo P, Baumgarten MN, Stoop D, Haentjes P, Verheyen G, De Schrijver F, Liebaers I, Camus M, Bonduelle M, Devroey P, Nelissen ECM, Van Montfoort APA, Coonen E, Derhaag JG, Evers JLH, Dumoulin JCM, Costa Lopes JR, Mendes dos Santos J, Portugal Silva Lima S, Portugal Silva Souza S, Rodrigues Pereira T, Barguil Brasileiro JP, Pina H, Lessa ML, Genovese Soares M, Medina Lopes V, Ribeiro CG, Adami K, Hughes C, Emerson G, Grundy K, Kelly P, Mocanu E, Rodrigues Pereira T, Medina Lopes V, Barguil Brasileiro JP, Coelho Cafe T, de Souza Costa JBM, Zavattiero Tierno NI, Portugal Silva Lima S, Portugal Silva Souza S, Mendes dos Santos J, Costa Lopes JR, Rinaudo P, Lin W, Liu X, Donjacour A, Singh S, Vitthala S, Zosmer A, Sabatini L, Tozer A, Davis C, Al-Shawaf T, Neri QV, Monahan D, Rosenwaks Z, Palermo GD, Kalu E, Thum MY, Abdalla HA, Sazonova A, Bergh C, Kallen K, Thurin-Kjellberg A, Wennerholm UB, Griesinger G, Doody K, Witjes H, Mannaerts B, Tarlatzis B, Witjes H, Mannaerts B, Rombauts L, Heijnen E, Marintcheva-Petrova M, Elbers J, Koning A, Mutsaerts MAQ, Hoek A, Mol BW, Fadini R, Guarnieri T, Mignini Renzini M, Comi R, Mastrolilli M, Villa A, Colpi E, Coticchio G, Dal Canto M, Dolleman M, Broer SL, Opmeer BC, Fauser BC, Mol BW, Broekmans FJM, Alama P, Requena A, Crespo J, Munoz M, Ballesteros A, Munoz E, Fernandez M, Meseguer M, Garcia-Velasco JA, Pellicer A, Munk M, Smidt-Jensen S, Blaabjerg J, Christoffersen C, Lenz S, Lindenberg S, Bosch E, Labarta E, Cruz F, Simon C, Remohi J, Pellicer A, Esler J, Osborn J, Boissonnas Chalas C, Marszalek A, Fauque P, Wolf JP, De Ziegler D, Cabanes L, Jouannet P, Han AR, Park CW, Cha SW, Kim HO, Yang KM, Kim JY, Song IO, Koong MK, Kang IS, Roszaman R, Omar MH, Nazri Y, Azantee YW, Murad AZ, Zainulrashid MR, Wang N, Le F, Wang LY, Ding GL, Sheng JZ, Huang HF, Jin F, Reinblatt S, Holzer H, Son WY, Shalom-Paz E, Chian RC, Buckett W, Dahan M, Demirtas E, Tan SL, Revel A, Schejter-Dinur Y, Revel-Vilk S, Hermens RPMG, van den Boogaard E, Leschot NJ, Vollebergh JHA, Bernardus R, Kremer JAM, van der Veen F, Goddijn M, Nahuis MJ, Kose N, Bayram N, Hompes PGA, Mol BWJ, van der veen F, van Wely M, Van Disseldorp J, Broer SL, Dolleman MD, Broeze K, Opmeer BC, Mol BW, Broekmans FJM, De Rycke M, Petrussa L, Liebaers I, Van de Velde H, Cerrillo M, Pacheco A, Rodriguez S, Gomez R, Delagado F, Pellicer A, Garcia Velasco JA, Desmyttere S, Verpoest W, De Rycke M, Staessen C, De Vos A, Liebaers I, Bonduelle M, Kohls G, Ruiz FJ, De la Fuente G, Toribio M, Martinez M, Pellicer A, Garcia-Velasco JA, Soderstrom - Anttila V, Salevaara M, Suikkari AM, Clua E, Tur R, Alcaniz N, Boada M, Rodriguez I, Barri PN, Veiga A, Nelen WLDM, Van Empel IWH, Cohlen BJ, Laven JS, Aarts JWM, Kremer JAM, Ricciarelli E, Gomez-Palomares JL, Andres-Criado L, Hernandez ER, Courbiere B, Aye M, Perrin J, Di Giorgio C, De Meo M, Botta A, Castilla Alcala J, Luceno Maestre F, Cabello Y, Gomez-Palomares JL, Hernandez J, Marqueta J, Pareja A, Hernandez E, Coroleu B, Helmgaard L, Klein BM, Arce JC, Aarts JWM, van Empel IWH, Boivin J, Kremer JAM, Verhaak CM, Ding G, Yin R, Wang N, Sheng J, Huang H, Mancini F, Tur R, Gomez MJ, Rodriguez I, Coroleu B, Barri PN, van den Boogaard NM, van der Steeg JW, van der Veen F, Hompes P, Mol BW, Boyer P, Gervoise-Boyer M, Meddeb L, Rossin B, Audibert F, Sakian S, Chan Wong E, Ma S, Pathak R, Mustafa MD, Ahmed RS, Tripathi AK, Guleria K, Banerjee BD, Vela G, Luna M, Flisser ED, Sandler B, Brodman M, Grunfeld L, Copperman AB, Baronio M, Carrascosa P, Capunay C, Vallejos J, Papier S, Borghi M, Sueldo C, Carrascosa J, Martin Lopez E, Marcucci A, Marcucci I, Salacone P, Sebastianelli A, Caponecchia L, Pacini N, Rago R, Alvarez M, Carreras O, Gomez MJ, Tur R, Coroleu B, Barri PN, Arnoldi M, Diaferia D, Corbucci MG, De Lauretis L, Kook MJ, Jung JY, Lee JH, Jung YJ, Hwang HK, Kang A, An SJ, Kim HM, Kwon HC, Lee SJ, Satoh M, Imada J, Ito K, Migishima F, Inoue T, Ohnishi Y, Kawato H, Nakaoka Y, Fukuda A, Morimoto Y, Mourad S, Hermens RPMG, Nelen WLDM, Grol RPTM, Kremer JAM, Polyzos NP, Valachis A, Patavoukas E, Papanikolaou EG, Messinis IE, Tarlatzis BC, Kang H, Kim CH, Park E, Kim S, Chae HD, Kang BM, Jung KS, Song HJ, Ahn YS, Petkova L, Canov I, Milachich T, Shterev A, Patrat C, Fauque P, Pocate K, Juillard JC, Gayet V, Blanchet V, de Ziegler D, Wolf JP, van der JW, Leushuis E, Steures P, Koks C, Oosterhuis J, Bourdrez P, Bossuyt PM, van der Veen F, Mol BWJ, Hompes PGA. Posters * Safety & Quality (I.E. Guidelines, Multiple Pregnancy, Outcome, Follow-Up etc.). Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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18
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Sansone P, Storci G, Tavolari S, Guarnieri T, Giovannini C, Taffurelli M, Ceccarelli C, Santini D, Paterini P, Marcu KB, Chieco P, Bonafè M. IL-6 triggers malignant features in mammospheres from human ductal breast carcinoma and normal mammary gland. J Clin Invest 2008; 117:3988-4002. [PMID: 18060036 DOI: 10.1172/jci32533] [Citation(s) in RCA: 595] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2007] [Accepted: 09/12/2007] [Indexed: 12/18/2022] Open
Abstract
High serum levels of IL-6 correlate with poor outcome in breast cancer patients. However, no data are available on the relationship between IL-6 and mammary stem/progenitor cells, which may fuel the genesis of breast cancer in vivo. Herein, we address this issue in the MCF-7 breast cancer cell line and in primary human mammospheres (MS), multicellular structures enriched in stem/progenitor cells of the mammary gland. MS from node invasive breast carcinoma tissues expressed IL-6 mRNA at higher levels than did MS from matched non-neoplastic mammary glands. In addition, IL-6 mRNA was detected only in basal-like breast carcinoma tissues, an aggressive breast carcinoma variant showing stem cell features. IL-6 treatment triggered Notch-3-dependent upregulation of the Notch ligand Jagged-1 and promotion of MS and MCF-7-derived spheroid growth. Moreover, IL-6 induced Notch-3-dependent upregulation of the carbonic anhydrase IX gene and promoted a hypoxia-resistant/invasive phenotype in MCF-7 cells and MS. Finally, autocrine IL-6 signaling relied upon Notch-3 activity to sustain the aggressive features of MCF-7-derived hypoxia-selected cells. In conclusion, these data support the hypothesis that IL-6 induces malignant features in Notch-3-expressing stem/progenitor cells from human ductal breast carcinoma and normal mammary gland.
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Affiliation(s)
- Pasquale Sansone
- Center for Applied Biomedical Research, St. Orsola-Malpighi University Hospital, Department of Pharmacology and Toxicology, University of Bologna, Bologna, Italy
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19
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Storci G, Sansone P, Trere D, Tavolari S, Taffurelli M, Ceccarelli C, Guarnieri T, Paterini P, Pariali M, Montanaro L, Santini D, Chieco P, Bonafé M. The basal-like breast carcinoma phenotype is regulated bySLUGgene expression. J Pathol 2008; 214:25-37. [DOI: 10.1002/path.2254] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Tavolari S, Bonafè M, Marini M, Ferreri C, Bartolini G, Brighenti E, Manara S, Tomasi V, Laufer S, Guarnieri T. Licofelone, a dual COX/5-LOX inhibitor, induces apoptosis in HCA-7 colon cancer cells through the mitochondrial pathway independently from its ability to affect the arachidonic acid cascade. Carcinogenesis 2007; 29:371-80. [PMID: 18033773 DOI: 10.1093/carcin/bgm265] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Nowadays, no data are available concerning the potential use of dual cyclooxygenase (COX)/5-lipoxygenase (LOX) inhibitors as anticancer agents in colon cancer treatment. Here, we report, for the first time, that the dual COX/5-LOX inhibitor licofelone triggers apoptosis in a dose- and time-dependent manner in HCA-7 colon cancer cells. Induction of apoptosis was related to the recruitment of the intrinsic mitochondrial apoptotic pathway, as shown by loss in mitochondrial membrane potential, cytochrome c release, caspase-9 and 3 activation and poly-(ADP-ribose)polymerase-1 cleavage. Moreover, licofelone induced the cleavage of the full-length p21(Bax) into p18(Bax), a more potent inducer of the apoptotic process than the uncleaved form. Pre-treatment of HCA-7 cells with the pan-caspase inhibitor z-VAD-fmk significantly blocked licofelone-induced apoptosis, confirming that this process occurred primarily in a caspase-dependent pathway. We also present evidences that licofelone was able to affect the arachidonic acid (AA) cascade, as it blocked the activity of 5-LOX and COX enzymes, and it induced, through the phosphorylation of cytoplasmic phospholipase A(2) (cPLA(2)), the release of unesterified AA from HCA-7 membrane phospholipids. However, apoptosis induction was not related to the ability of licofelone to affect the AA cascade, since neither exogenous prostaglandin E(2) and leukotriene B(4) addition, nor pharmacological inhibition of cPLA(2), was able to rescue HCA-7 cells from apoptosis. Even if further studies are needed to clarify the mechanism of licofelone-induced apoptosis, this study suggests that this drug, as well as similar dual COX/5-LOX inhibitors, may represent a novel and promising approach in colon cancer treatment.
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Affiliation(s)
- Simona Tavolari
- Department of Experimental Evolutionary Biology, University of Bologna, via F. Selmi 3, Bologna 40126, Italy
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21
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Canesi L, Ciacci C, Lorusso LC, Betti M, Guarnieri T, Tavolari S, Gallo G. Immunomodulation by 17β-estradiol in bivalve hemocytes. Am J Physiol Regul Integr Comp Physiol 2006; 291:R664-73. [PMID: 16601263 DOI: 10.1152/ajpregu.00139.2006] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In mammals, estrogens have dose- and cell-type-specific effects on immune cells and may act as pro- and anti-inflammatory stimuli, depending on the setting. In the bivalve mollusc Mytilus, the natural estrogen 17β-estradiol (E2) has been shown to affect neuroimmune functions. We have investigated the immunomodulatory role of E2 in Mytilus hemocytes, the cells responsible for the innate immune response. E2 at 5–25 nM rapidly stimulated phagocytosis and oxyradical production in vitro; higher concentrations of E2 inhibited phagocytosis. E2-induced oxidative burst was prevented by the nitric oxide (NO) synthase inhibitor NG-monomethyl-l-arginine and superoxide dismutase, indicating involvement of NO and O2−; NO production was confirmed by nitrite accumulation. The effects of E2 were prevented by the antiestrogen tamoxifen and by specific kinase inhibitors, indicating a receptor-mediated mechanism and involvement of p38 MAPK and PKC. E2 induced rapid and transient increases in the phosphorylation state of PKC, as well as of a aCREB-like (cAMP responsive element binding protein) transcription factor, as indicated by Western blot analysis with specific anti-phospho-antibodies. Localization of estrogen receptor-α- and -β-like proteins in hemocytes was investigated by immunofluorescence confocal microscopy. The effects of E2 on immune function were also investigated in vivo at 6 and 24 h in hemocytes of E2-injected mussels. E2 significantly affected hemocyte lysosomal membrane stability, phagocytosis, and extracellular release of hydrolytic enzymes: lower concentrations of E2 resulted in immunostimulation, and higher concentrations were inhibitory. Our data indicate that the physiological role of E2 in immunomodulation is conserved from invertebrates to mammals.
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Affiliation(s)
- Laura Canesi
- Istituto di Scienze Fisiologiche, Università Carlo Bo di Urbino, Italy.
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Tavolari S, Bucci L, Tomasi V, Guarnieri T. Selected polychlorobiphenyls congeners bind to estrogen receptor alpha in human umbilical vascular endothelial (HUVE) cells modulating angiogenesis. Toxicology 2006; 218:67-74. [PMID: 16293362 DOI: 10.1016/j.tox.2005.10.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2005] [Revised: 09/14/2005] [Accepted: 10/12/2005] [Indexed: 11/29/2022]
Abstract
Endocrine disrupting chemicals (EDCs) can behave as agonists or antagonists of several hormone receptors, thus mimicking or antagonizing the physiological activity of endogenous ligands. The involvement of estrogens in the regulation of angiogenesis has convincingly been demonstrated by a large body of experimental studies. Some polychlorobiphenyls (PCBs), considered EDCs, interact with estrogen receptors (ERs), so it is possible that these exogenous compounds affect the angiogenic process. Using fluorescence polarization, we firstly assayed whether PCB 77 (3,3',4,4'-tetrachlorobiphenyl), PCB 153 (2,2',4,4',5,5'-hexachlorobiphenyl) and PCB 156 (2,3,3',4,4',5-hexachlorobiphenyl) were able to bind to the alpha isoform of ER, recently found to be involved in angiogenesis. To discriminate the putative agonist or antagonist binding behaviour of these compounds, we tested their ability to activate, similarly to the natural ligand 17-beta-estradiol (17betaE(2)), the extracellular-signal-regulated kinase (Erk) 1/2 in human umbilical vascular endothelial (HUVE) cells. Finally, by using a new angiogenic assay, we evaluated the effect of PCBs treatment on microvessels neoformation. The data obtained in the present study showed that all the PCBs tested were able to bind to ERalpha and to elicit a response which can be agonistic or antagonistic; moreover, PCB 153 and PCB 77 can either positively or negatively modulate the angiogenic process, thus behaving as EDCs in endothelial cells.
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Affiliation(s)
- Simona Tavolari
- Department of Experimental Biology, University of Bologna, 40126 Bologna, Italy
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Griffoni C, Spisni E, Santi S, Riccio M, Guarnieri T, Tomasi V. Knockdown of caveolin-1 by antisense oligonucleotides impairs angiogenesis in vitro and in vivo. Biochem Biophys Res Commun 2000; 276:756-61. [PMID: 11027543 DOI: 10.1006/bbrc.2000.3484] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Knock-out of the gene coding for caveolin-1, the main organizer of caveolae, has not yet been performed. We devised a strategy to knock-down caveolin-1 gene expression using antisense oligodeoxynucleotides (ODNs). Seven ODNs, covering different regions of caveolin-1 mRNA, were screened by Western blot analysis of caveolin-1 levels. The most active and specific was found to reduce caveolin-1 protein levels by 70% at 1 microM concentration and its action, as demonstrated by a marked reduction (about 50%) in caveolin-1 mRNA levels, was due to a true antisense mechanism. In HUVEC treated with the active ODN, caveolae were undetectable by confocal and electron microscopy, while their number was not affected when cells were treated with a scrambled ODN. Using the fibrin gel 3 D angiogenesis test we established that the active (but not the scrambled) ODN strongly suppressed capillary-like tube formation. Moreover, an antisense tailored against chicken caveolin-1 mRNA, when tested using the chorio-allantoic membrane technique, dramatically reduced vessel formation at doses (10-20 microg) under which control ODNs were ineffective and devoid of toxicity. Thus, it is likely that caveolin-1 down regulation, followed by caveolae disruption, impairs angiogenesis in vitro and in vivo.
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Affiliation(s)
- C Griffoni
- Department of Experimental Biology, University of Bologna, Bologna, Italy
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Abstract
Atrial fibrillation commonly occurs after coronary bypass surgery. Most studies suggest that atrial fibrillation develops in approximately 20% to as many as 50% of patients undergoing coronary artery bypass surgery. Over the years, a number of prophylactic regimens have been utilized to prevent atrial fibrillation after coronary bypass surgery. The majority of these studies have used oral agents in various combinations. Few studies have used intravenous agents, and most of these studies have used either beta blockers, calcium antagonists, or class I antiarrhythmic drugs. Recent evidence suggests that intravenous amiodarone may provide safe and effective prophylaxis against atrial fibrillation in many patients undergoing coronary bypass surgery. The evolving data that support such an approach are discussed in this article.
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Affiliation(s)
- T Guarnieri
- Midatlantic Cardiovascular Associates, PA, Baltimore, Maryland 21204, USA
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Guarnieri T, Nolan S, Gottlieb SO, Dudek A, Lowry DR. Intravenous amiodarone for the prevention of atrial fibrillation after open heart surgery: the Amiodarone Reduction in Coronary Heart (ARCH) trial. J Am Coll Cardiol 1999; 34:343-7. [PMID: 10440143 DOI: 10.1016/s0735-1097(99)00212-0] [Citation(s) in RCA: 197] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES This study was designed to test whether intravenous (i.v.) amiodarone would prevent atrial fibrillation and decrease hospital stay after open heart surgery. BACKGROUND Atrial fibrillation commonly occurs after open heart procedures and is thought to be a significant determinant for prolongation of hospitalization. Oral amiodarone given preoperatively appears to reduce the incidence of atrial fibrillation. This study was designed to test whether the more rapid-acting i.v. formulation of amiodarone given postoperatively would reduce the incidence of atrial fibrillation. METHODS Three hundred patients undergoing standard open heart surgery were randomized in a double-blind fashion to i.v. amiodarone (1 g/day for 2 days) versus placebo immediately after open heart surgery. The primary end points of the trial were incidence of atrial fibrillation and length of hospital stay. Baseline clinical variables and mortality and morbidity data were collected. RESULTS Atrial fibrillation occurred in 67/142 (47%) patients on placebo versus 56/158 (35%) on amiodarone (p = 0.01). Length of hospital stay for the placebo group was 8.2 +/- 6.2 days, and 7.6 +/- 5.9 days for the amiodarone group (p = 0.34). No differences were noted in baseline variables, morbidity or mortality. CONCLUSIONS Low-dose i.v. amiodarone was safe and effective in reducing the incidence of atrial fibrillation after heart surgery, but did not significantly alter length of hospital stay.
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Affiliation(s)
- T Guarnieri
- St. Joseph Medical Center, Baltimore, Maryland, USA.
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Villani L, Guarnieri T. Changes in NADPH-diaphorase expression induced by excitotoxicity in the goldfish retina: relation with some morphological and biochemical aspects. Eur J Histochem 1998; 42:71-6. [PMID: 9615193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We report alterations in the pattern of NADPH-diaphorase staining, a marker of nitric oxide, in the goldfish retina after kainic acid administration. The heavily stained ellipsoids of the photoreceptors, the heavily stained neurons of the inner plexiform layer and the labeled neurons of the ganglion cell layer are spared by excitotoxic insult, while the faintly medium sized neurons of the inner plexiform layer disappear after kainic acid administration. Furthermore, in the bipolar and in the horizontal retinal neurons we observe an induction of NADPH-diaphorase expression. The kainic acid-induced neurotoxicity evaluated by morphological observations and by measuring the levels of choline acetyltranferase in retinal homogenates, is not prevented by the administration of a nitric oxide synthase inhibitor.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Contestabile A, Ciani E, Sparapani M, Guarnieri T, Dell'Erba G, Bologna F, Cicognani C. Activation of the ornithine decarboxylase-polyamine system and induction of c-fos and p53 expression in relation to excitotoxic neuronal apoptosis in normal and microencephalic rats. Exp Brain Res 1998; 120:519-26. [PMID: 9655238 DOI: 10.1007/s002210050426] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Microencephalic rats obtained by gestational treatment with the DNA alkylating agent methylazoxymethanol, show a remarkable lack of sensitivity to excitotoxic neuropathology caused by systemic injections of the convulsant neurotoxin kainic acid. Taking advantage of this, we have studied in these rats, as well as in normal rats, the relationship between the induction of cellular signals supposedly related to cell death and the neuronal apoptosis consequent to kainic acid administration. While normal rats responded to the excitatory insult with a large and relatively long lasting increase of the activity of the enzyme ornithine decarboxylase and of the concentration of putrescine in some brain regions, these alterations were much smaller in microencephalic rats. Expression of c-fos in brain regions sensitive to kainic acid was quicker but lasted a noticeably shorter time in microencephalic rats as compared to normal animals. A profusion of apoptotic neurons, labeled by an in situ technique, were observed in the olfactory cortex, amygdala and hippocampus of normal rats injected with kainic acid, in particular 48 h and 72 h after drug administration. At corresponding time intervals and with similar topographic localization, neurons expressing p53 protein were observed. By contrast, microencephalic rats displayed only in a few cases and in a small number apoptotic neurons in restricted areas of the ventral hippocampus and entorhinal cortex. Noticeably, in these cases small populations of p53-expressing neurons were also present in the same areas. The present observations clearly show that oncogenes such as c-fos and p53, as well as ornithine decarboxylase which behaves as an immediate-early gene in the brain under certain circumstances, undergo noticeably lower and/or shorter induction in microencephalic rats exposed to excitotoxic stimuli. In these rats, therefore, the cellular signalling pathways studied here and related to excitotoxic sensitivity and commitment to cell death are downregulated as a probable consequence of altered brain wiring.
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Tregnago M, Virgili M, Monti B, Guarnieri T, Contestabile A. Alteration of neuronal nitric oxide synthase activity and expression in the cerebellum and the forebrain of microencephalic rats. Brain Res 1998; 793:54-60. [PMID: 9630513 DOI: 10.1016/s0006-8993(98)00161-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microencephalic rats were obtained through gestational (for the forebrain) or neonatal (for the cerebellum) administration of the DNA-alkylating agent methylazoxymethanol acetate (MAM), which selectively kills dividing cells during neurogenesis. In the microencephalic cerebellum the specific activity of calcium-dependent nitric oxide synthase (NOS) was decreased by 35-40% at 12, 28 and 70 days of age. Other neurochemical markers not related to granule cells (the neuronal population selectively compromised by neonatal MAM treatment), choline acetyltransferase (ChAT) and glutamate decarboxylase (GAD) were not decreased, but actually increased when determined as specific activity. In agreement with the decreased catalytic activity measured in the tube, the expression of neuronal NOS protein was attenuated as judged from immunohistochemistry and Western blotting. In the microencephalic forebrain, the specific calcium-dependent NOS activity measured in homogenates of the whole hemisphere was significantly increased as compared to normal animals. Accordingly, immunohistochemistry for neuronal NOS, as well as NADPH-diaphorase histochemistry revealed an apparent increase in the density of strongly reactive neurons in the underdeveloped cortex and striatum of microencephalic rats. The results reported here demonstrate that permanent alterations of neuronal NOS activity and expression occur when the development of the brain and its neuronal circuits are severely compromised. Furthermore, the permanent downregulation of neuronal NOS in the cerebellum of microencephalic rats may be exploited for the study of the role of NO in mechanisms of synaptic plasticity such as long term depression (LTD).
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Affiliation(s)
- M Tregnago
- Department of Biology, University of Bologna, Via Selmi 3, 40126 Bologna, Italy
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Villani L, Guarnieri T, Dell'Erba G. Apoptosis is induced by excitotoxicity in goldfish retina. J Hirnforsch 1998; 38:481-6. [PMID: 9476212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Apoptosis is an important mechanism of cell death that occurs physiologically during development. Recently, it has been shown that the selective pattern of neuronal degeneration in some brain disorders or in excitotoxic animal models, can reveal signs of apoptosis. This work produces evidence that kainic acid, a non-NMDA receptor agonist, induces apoptotic cell death in the goldfish retina. DNA breaks are in situ detected by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labeling (TUNEL). This reaction shows a large number of positive cells in the inner nuclear layer 48 hours after intravitreal kainic acid administration. TUNEL staining of apoptotic death was prevented by the non-NMDA glutamate receptor antagonist 6,7-dinitroquinoxaline-2,3-dione (DNQX) but not by the NMDA receptor antagonist MK-801 administration. Ultrastructural changes that occur in kainic acid affected retinal neurons (hypercondensation and clumping of the chromatin and shrinkage of the cytoplasm) are consistent with those described in programmed cell death. Our results indicate that the excitotoxicity of intravitreally injected kainic acid causes the degeneration of those neurons in the goldfish retina, that underwent apoptotic death.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Abstract
The localization of nitric oxide synthase and NADPH-diaphorase was studied in the goldfish retina by means of immunohistochemistry or tetrazolium salt technique. Nitric oxide synthase was found in some small neurons of the inner nuclear layer and in large neurons of the ganglion cell layer. The reaction product was localized in the outer plexiform layer and a diffuse labeling was also observed in the inner plexiform layer. In addition to the outer segments of photoreceptors, NADPH-diaphorase labeled several neurons of the inner nuclear layer and some neurons scattered in the ganglion cell layer. Both outer and inner plexiform layers were labeled. Ultrastructural observations showed that the reaction product was found to be bound to the endoplasmic membranes of positive neurons. In the outer plexiform layer the formazan precipitate labeled prevailingly the presynaptic terminals of rods and cones, in the inner plexiform layer both pre- and postsynaptic profiles showed the reaction product.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Abstract
The telencephalo-habenulo-interpeduncular system has been anatomically and neurochemically characterized in mammals. However, little is known about these important forebrain-midbrain connections in non-mammalian vertebrates, although available data suggest that they are evolutionarily relatively conservative. Previous ultrastructural studies in the goldfish confirmed the presence of massive telencephalohabenular and habenulointerpeduncular projections and demonstrated a minor direct telencephalointerpeduncular connection. Here we report the anterograde and retrograde transport of lipophilic fluorescent carbocyanine dye from the interpeduncular nucleus and the habenular nuclei in the fixed goldfish brain. The application of dye into the interpeduncular nucleus resulted in massive labeling of the fasciculus retroflexus and of the habenular neurons. A few scattered neurons were also seen in the dorsal nucleus of area ventralis telencephali. Application of dye into the habenulae resulted in anterograde transport through the medial and lateral olfactory tracts to some cell bodies in the anterior and posterior zone of area ventralis telencephali and in perikarya of the bed nucleus and in the entopeduncular nucleus. These results demonstrate the origin of the direct telencephalointerpeduncular projection in the goldfish and confirm some important homologies with forebrain-midbrain projections in land vertebrates.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Villani L, Guarnieri T, Facchinetti F, Virgili M, Poli A. Neurotoxic effects of DSP-4 on the noradrenergic system of the goldfish brain. Brain Behav Evol 1996; 47:219-24. [PMID: 8724644 DOI: 10.1159/000113242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The substance N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP-4) is a neurotoxin with selective and long-lasting effects on the noradrenergic (NA) neurons of mammalian brains. The present study examines the effects of this toxin on the noradrenergic system of the goldfish brain. Single doses (50 mg/kg body weight) of DSP-4 reduce the immunoreactivity of the NA synthesizing enzyme dopamine-beta-hydroxylase (DBH), as revealed by immunohistochemistry 7 and 12 days after toxin administration. The depletion involves the DBH-positive fibres and spares the DBH-positive cell bodies. Dopamine-beta-hydroxylase immunoreactivity, 40 days after toxin administration, showed a complete recovery. Ultrastructural investigations confirmed that DSP-4 toxicity affects only nervous fibres and terminals, sparing cell bodies. Administration of DSP-4 also produced a marked decrease of noradrenaline (NA) levels in the goldfish brain, seven days later, while dopamine (DA) and serotonin (5-HT) levels were unaffected by toxin injection. The reduction of NA levels induced by DSP-4 was prevented by the concomitant administration of the NA uptake inhibitor desipramine. Noradrenaline levels measured 40 days after toxin administration show that DSP-4 toxicity was completely reversed. The results suggest a pronounced plasticity of the noradrenergic system in the goldfish brain.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Abstract
The ultrastructural localization of NADPH-diaphorase was studied in the goldfish brain by means of the tetrazolium salt technique. The reaction product was found to be bound to the endoplasmic membranes of neurons in different brain areas. In the synaptic structures both pre and post-synaptic profiles showed the reaction product. Furthermore non-neuronal structures were intensely labeled. Endothelial cells revealed the membranous localization of NADPH-diaphorase and the glial cells of the hypothalamic nuclei and of the paraventricular organ were labeled. In some cases the reaction product was seen also in oligodendrocytes and in microglial cells.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Villani L, Carraro S, Guarnieri T. 6,7-Dinitroquinoxaline-2,3-dione but not MK-801 exerts a protective effect against kainic acid neurotoxicity in the goldfish retina. Neurosci Lett 1995; 192:127-31. [PMID: 7675320 DOI: 10.1016/0304-3940(95)11616-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Recent findings indicated that the excitotoxicity of glutamate analogues was prevented in the mammalian nervous system by N-methyl-D-aspartate (NMDA) antagonists. The neurodegenerative effects of kainic acid, and the putative protection of MK-801 and 6,7-dinitroquinoxaline-2,3-dione (DNQX), were investigated by morphological studies showing the toxicity of kainic acid to the neurons of the inner nuclear layer, and measuring choline acetyltransferase and glutamate decarboxylase activities in the retina. In addition, the proliferation of Müller retinal cells was assumed as an index of neuronal degeneration and was quantified by counting glial fibrillary acidic protein immunopositive cells. Our observations suggest that the non-NMDA receptor antagonist DNQX exerted a protective effect on goldfish retinal neurons, while MK-801 did not prevent the neurotoxicity induced by kainic acid in the goldfish retina. This finding is in agreement with previous work on kainic acid toxicity in the goldfish optic tectum.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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35
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Abstract
The distribution of NADPH-diaphorase positive neurons was studied by using the enzyme histochemical method. Numerous neurons were labeled in different brain areas of the goldfish and their distribution showed some differences in comparison with other studied teleosts, indicating a species-specific pattern of NADPH-diaphorase distribution as observed in mammals. The localization of NADPH-diaphorase in the thalamic nuclei, in the paraventricular organ, in the inferior hypothalamic lobe, in the periventricular neurons of the optic tectum, in the nucleus isthmi and in the mesencephalic reticular formation was comparable to the one observed in other teleosts. In addition in the goldfish the telencephalic neurons of the pars centralis and lateralis of the area dorsalis, the habenular neurons, the bipolar neurons of the central grey layer of the optic tectum and the motor neurons of the hypertrophied vagal lobe were labeled. The localization of NADPH-diaphorase positive neurons, compared to the distribution of cholinergic neurons described in fish, indicated that the production of nitric oxide was prevailing in the brain areas where cholinergic circuits are active.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Anderson JL, Platt ML, Guarnieri T, Fox TL, Maser MJ, Pritchett EL. Flecainide acetate for paroxysmal supraventricular tachyarrhythmias. The Flecainide Supraventricular Tachycardia Study Group. Am J Cardiol 1994; 74:578-84. [PMID: 8074041 DOI: 10.1016/0002-9149(94)90747-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Flecainide has been shown to be effective in short-term, controlled studies for prevention of paroxysmal supraventricular tachycardia (SVT) and paroxysmal atrial fibrillation (AF). However, it is unknown whether this beneficial response is maintained during long-term chronic therapy. Forty-nine patients were studied who enrolled in double-blind, placebo-controlled, short-term studies of safety and efficacy and subsequently received long-term, open-label therapy for > or = 6 months (mean duration of therapy, 17 months). To evaluate chronic efficacy, events during long-term therapy were documented by a transtelephonic monitor for either 4 or 8 weeks, comparable to the corresponding 4- or 8-week placebo-baseline periods in the same patients. Results during chronic therapy were compared with those at baseline and after the initial (short-term) treatment period. Compared with placebo-baseline results, the number of patients free of arrhythmic attacks increased significantly for both patients with SVT (from 24% to 82%, p = 0.013, n = 17) and patients with AF (from 12% to 68%, p < 0.001, n = 25). Mean time to first attack and mean number of days between attacks also showed significant and parallel increases during the chronic efficacy period. In patients with paired short- and long-term efficacy evaluations with the same dose of flecainide, end points were maintained at equivalent levels or showed further improvement (i.e., mean rate of AF attacks decreased further with chronic therapy, p = 0.036). No proarrhythmic events, death, or myocardial infarction occurred.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J L Anderson
- Department of Medicine, University of Utah, Salt Lake City
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Guarnieri T, Virgili M, Carraro S, Villani L. Quinolinic acid but not MK-801 protects the dopaminergic system from 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced toxicity in goldfish retina. Neurochem Int 1994; 24:559-64. [PMID: 7981638 DOI: 10.1016/0197-0186(94)90008-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The toxicity of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, intravitreally injected in goldfish eye, involves interplexiform retinal neurons and depletes tyrosine hydroxylase immunoreactivity and dopamine levels. This induced neurotoxicity was prevented by the concomitant administration in non-toxic doses (10 micrograms) of quinolinic acid, an endogenous structural analogue of N-methyl D-aspartate with excitotoxic properties. Quinolinic acid is ineffective on the retinal degeneration induced by 1-methyl-4-phenylpyridinium ion. This fact suggests that quinolinic acid inhibits the MAO-B oxidation of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine. MK-801, a noncompetitive antagonist of glutamate NMDA-receptors, exerts partial protective effects on MPTP-induced delayed toxicity in mammals. In the goldfish eye, MK-801, injected in low concentration, and in conjunction with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine or 1-methyl-4-phenylpyridinium ion, did not prevent retinal neurodegeneration. Ten micrograms of MK-801 alone did not affect retinal neurons, while a higher concentration (20 micrograms) causes the chromatolysis of some photoreceptor nuclei.
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Affiliation(s)
- T Guarnieri
- Department of Biology, University of Bologna, Italy
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38
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Abstract
The habenular nuclei are the major sources of projections to the interpeduncular nucleus. The habenular neurons of the goldfish are ChAT and NADPH-diaphorase positive. The localization of these two enzymes in the habenulae suggests the involvement of acetylcholine and nitric oxide (the product of NADPH-diaphorase activity in the nervous tissue) in the habenulo-interpeduncular connection. This finding is supported by the presence of ChAT and NADPH-diaphorase activity in the neuropilar area of the interpeduncular nucleus. This activity was depleted 12 days after habenular ablation. The overlap of ChAT and NADPH-diaphorase localization in goldfish habenular neurons is consistent with previous observations on the co-localization of these two enzymes in some brainstem neurons of other vertebrates. It is, however, not identical to the localization of NADPH-diaphorase in the habenulae and in the interpeduncular nucleus of the rat.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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Ciani E, Guarnieri T, Contestabile A. Fos protein induction, neuropathology, and pharmacological protection after excitotoxic brain insult. Exp Brain Res 1994; 98:421-30. [PMID: 7914492 DOI: 10.1007/bf00233980] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The excitotoxins kainic acid and N-methyl D-aspartate (NMDA) were unilaterally injected in the rat striatum. Kainic acid injections resulted in a widespread pattern of Fos protein induction, mainly involving cortical olfactory structures and hippocampus. Immunoreactive cells were observed in large number 2-24 h after injection and had almost completely disappeared by 48 h. NMDA injections elicited a shorter (2-8 h) expression of Fos protein, involving a lower number of cells in cortical olfactory structures, a much larger number of cells in the other cortical regions, and not involving the hippocampus at all. Characteristically none of the two excitotoxins stimulated Fos expression from striatal neurons, even in the close vicinity of the needle tract. In addition to striatal lesions almost equivalent in size, the two excitotoxins caused distant lesions of different extension: kainic acid resulted in extensive neuronal degeneration in the olfactory-entorhinal cortices and among pyramidal neurons of the hippocampus; NMDA caused a less widespread neurodegeneration, restricted to the olfactory cortex. Administration of the competitive NMDA antagonist CGP 39551 largely prevented the distant, but not the local, neuropathological changes caused by intrastriatal kainic acid or NMDA. The expression of Fos protein, however, was partially prevented only in NMDA cases. The present results show a good relationship between the spreading of circuit overexcitation caused by the two excitotoxins and the regional and temporal patterns of Fos expression. The relationship between Fos expression and neuropathological condition remains, however, elusive.
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Affiliation(s)
- E Ciani
- Department of Biology, University of Bologna, Italy
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Villani L, Dipietrangelo L, Pallotti C, Pettazzoni P, Zironi I, Guarnieri T. Ultrastructural and immunohistochemical study of the telencephalo-habenulo-interpeduncular connections of the goldfish. Brain Res Bull 1994; 34:1-5. [PMID: 7514948 DOI: 10.1016/0361-9230(94)90178-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Surgical ablations of telencephalon or telencephalon plus habenular nuclei (HBN) have been performed for studying anatomical connections of the telencephalo-habenulo-interpeduncular system of the goldfish. The results of the ultrastructural studies confirmed the presence of massive telencephalo-habenular and habenulo-interpeduncular projections and, in addition, demonstrated a minor direct telencephalo-interpeduncular connection. Immunohistochemical localization of substance P in the interpeduncular nucleus (IPN) after telencephalic ablation failed to demonstrate the involvement of this neurotransmitter in the direct telencephalo-interpeduncular projection, while telencephalon plus HBN ablation reduced substance P immunoreactivity in the IPN. The different distribution of degenerating terminals converging on the IPN from the HBN and from the telencephalon suggested a subnuclear organization of this area, as described in mammals.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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41
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Affiliation(s)
- G de Lissovoy
- Department of Health Policy and Management, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205
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Abstract
The physiological oscillation of cytosolic [Ca2+] that underlies each heart beat is generated by the sarcoplasmic reticulum (SR) in response to an action potential (AP) and occurs relatively synchronously within and among cells. When the myocardial cell and SR Ca2+ loading become sufficiently high, the SR can also generate spontaneous, i.e., not triggered by sarcolemmal depolarization, Ca2+ oscillations (S-CaOs). The purpose of this review is to describe properties of S-CaOs in individual cells, myocardial tissue, and the intact heart, and to examine the evidence that may link S-CaOs to the initiation or maintenance of ventricular fibrillation (VF). The SR Ca2+ release that generates S-CaOs occurs locally within cells and spreads within the cell via Ca(2+)-induced Ca2+ release. The localized increase in cytosolic [Ca2+] due to S-CaOs may equal that induced by an AP and causes oscillatory sarcolemmal depolarizations of cells in which it occurs. These oscillatory depolarizations are due to Ca2+ activation of the Na/Ca exchanger and of nonspecific cation channels. Asynchronous occurrence of diastolic S-CaOs among cells within the myocardium causes inhomogeneity of diastolic SR Ca2+ loading; this leads to inhomogeneity of the systolic cytosolic [Ca2+] transient levels in response to a subsequent AP, which leads to heterogeneity of AP repolarization, due to heterogeneous Ca2+ modulation of the Na/Ca exchanger, nonspecific cation channels, and of the L-type Ca2+ channel. In a tissue in which asynchronous S-CaOs are occurring in diastole, the subsequent AP temporarily synchronizes SR Ca2+ loading and release within and among cells. Varying extents of synchronized S-CaOs then begin to occur during the subsequent diastole. The partial synchronization of this diastolic S-CaOs among cells within myocardial tissue produces aftercontractions and diastolic depolarizations. When S-CaOs are sufficiently synchronized, the resultant depolarizations summate and can be sufficient to trigger a spontaneous AP.S-CaOs occurrence within some cells during a long AP plateau also modulates the removal of voltage inactivation of L-type Ca2+ channels and increases the likelihood for "early afterdepolarizations" to occur in myocardial tissue. S-CaOs have an apparent modulatory role in the initiation of VF in the Ca2+ overload model and in the reflow period following ischemia. Likewise, in non-a priori Ca2+ overloaded hearts, S-CaOs modulate the threshold for VF induction (induced typically by alternating current) but may not be essential for VF induction.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- E G Lakatta
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224
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43
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Alexander E, Buyon JP, Provost TT, Guarnieri T. Anti-Ro/SS-A antibodies in the pathophysiology of congenital heart block in neonatal lupus syndrome, an experimental model. In vitro electrophysiologic and immunocytochemical studies. Arthritis Rheum 1992; 35:176-89. [PMID: 1734907 DOI: 10.1002/art.1780350209] [Citation(s) in RCA: 111] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To determine whether anti-Ro/SS-A antibodies selectively bind to neonatal cardiac cells and alter membrane repolarization. METHODS An in vitro electrophysiologic and immunocytochemical experimental model contrasting neonatal and rabbit cardiac tissue was employed. RESULTS Sera and IgG-enriched fractions from anti-Ro/SS-A antibody-positive mothers of infants with neonatal lupus erythematosus and congenital heart block bind to neonatal, rather than adult, rabbit cardiac tissue and alter the transmembrane action potential (i.e., inhibit repolarization). The additional presence of anti-La/SS-B antibodies was not additive or synergistic for these immunocytochemical and electrophysiologic features. Sera containing other antibody specificities (i.e., anti-native DNA, cardiolipin, Sm, and nuclear RNP) failed to stain the neonatal cardiac tissue or produced alterations in membrane repolarization. CONCLUSION Anti-Ro/SS-A antibodies may play a pathophysiologic role in the development of congenital heart block in neonatal lupus.
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Affiliation(s)
- E Alexander
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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44
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Guarnieri T, Virgili M, Villani L, Facchinetti F, Migani P, Contestabile A. Pharmacological manipulation of the NMDA receptor protects from kainate pathology. Neurochem Int 1992. [DOI: 10.1016/0197-0186(92)91970-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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45
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Abstract
Amiodarone, an antiarrhythmic drug approved for use in patients who survive cardiac arrest, has been associated with infiltration of or inflammatory changes in various tissues. To date thyroid dysfunction has been the only endocrine disturbance noted. In an initial group of seven amiodarone-treated men undergoing evaluation for sexual dysfunction, an elevation in serum gonadotropin concentration was detected, suggesting testicular dysfunction. Because of this finding, gonadal function was prospectively evaluated in 44 men (18 who had been treated with amiodarone for greater than 1 year and 26 survivors of cardiac arrest who had been treated with antiarrhythmic drugs other than amiodarone). Amiodarone-treated men had higher serum follicle-stimulating hormone (41.8 +/- 22.8 vs. 14.4 +/- 10.4 mIU/ml, p less than 0.001) and luteinizing hormone (34.8 +/- 26.4 vs. 10.1 +/- 5.2 mIU/ml, p less than 0.001) concentrations compared with control subjects. Although serum total and free testosterone levels were comparable between the two patient groups, these levels were inversely correlated (r = -0.53, p less than 0.05; r = -0.62, p less than 0.01, respectively) with cumulative amiodarone dose. Hyperresponsiveness to the administration of gonadotropin-releasing hormone was noted in the 10 amiodarone-treated men evaluated by this diagnostic test. Sexual dysfunction was common in both groups (70% of control subjects and 82% of amiodarone-treated subjects), although atrophic testes were more commonly observed in amiodarone-treated men (p less than 0.05). Because of the elevated serum gonadotropin level, it is concluded that testicular dysfunction may result from prolonged amiodarone treatment.
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Affiliation(s)
- A S Dobs
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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46
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Fazio G, Veltri EP, Tomaselli G, Lewis R, Griffith LS, Guarnieri T. Long-term follow-up of patients with nonischemic dilated cardiomyopathy and ventricular tachyarrhythmias treated with implantable cardioverter defibrillators. Pacing Clin Electrophysiol 1991; 14:1905-10. [PMID: 1721197 DOI: 10.1111/j.1540-8159.1991.tb02788.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We analyzed our 10-year cumulative experience of 40 consecutive patients with idiopathic dilated cardiomyopathy and associated ventricular tachyarrhythmias, treated with implantable cardioverter defibrillators. Dilated cardiomyopathy was defined as left ventricular ejection fraction (EF) less than or equal to 50% with no defineable etiology. Patient characteristics included: 24 male, mean age 52 years, mean EF = 33%, New York Heart Association Class I-III, presenting syndrome--cardiac arrest (n = 28), syncope/near syncope (n = 12). At 2.5 years mean follow-up, there were 16 deaths: one operative, three sudden, two incessant ventricular tachycardia/ventricular fibrillation (VT/VF), six heart failure, and four noncardiac. The actuarial mortality at 1 and 4 years was 0% and 14% for sudden death, 11% and 34% for cardiac death. The projected mortality was 52% and 78% for same time intervals (P less than 0.01). No useful baseline variable predicted who would or would not receive an ICD shock in follow-up. ICD therapy appears effective in reducing sudden death mortality in this high risk population.
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Affiliation(s)
- G Fazio
- Department of Internal Medicine, Johns Hopkins Hospital, Baltimore, Maryland
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47
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Abstract
The clinical development of taxol, a new antimicrotubule agent with a unique mechanism of cytotoxic action, has proceeded slowly due to serious hypersensitivity reactions (HSRs) and shortages in its supply. Nevertheless, large-scale phase II trials have been initiated as taxol has recently demonstrated impressive activity in advanced and cisplatin-refractory ovarian carcinoma. Furthermore, the incidence of HSRs has been reduced substantially with premedications and modifications in the administration schedule. However, various manifestations of potential cardiotoxicity have been observed in several patients who participated in four phase I and II studies of taxol. Asymptomatic bradycardia has occurred in a high proportion of patients, including 29% of ovarian cancer patients who were treated with maximally tolerated doses of taxol in a phase II study. More profound cardiac disturbances, including a range of atrioventricular conduction blocks, left bundle branch block, ventricular tachycardia (VT), and manifestations of cardiac ischemia, have been observed in seven of 140 patients (5%) who received taxol. Descriptions of these events are presented in this report to alert investigators to the potential for these adverse effects. Although these disturbances did not result in serious sequelae in most patients, investigators should continue to maintain a high degree of caution until precise risk factors, frequency, and clinical significance of these adverse cardiac effects are determined.
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Affiliation(s)
- E K Rowinsky
- Division of Pharmacology, Johns Hopkins Oncology Center, Baltimore, MD 21205
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48
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Levine JH, Mellits ED, Baumgardner RA, Veltri EP, Mower M, Grunwald L, Guarnieri T, Aarons D, Griffith LS. Predictors of first discharge and subsequent survival in patients with automatic implantable cardioverter-defibrillators. Circulation 1991; 84:558-66. [PMID: 1860200 DOI: 10.1161/01.cir.84.2.558] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Two hundred eighteen patients were evaluated in a two-phase approach (time to first appropriate discharge, survival after discharge) to identify factors that may be related to maximal benefit derived from use of an automatic implantable cardioverter-defibrillator (AICD). METHODS AND RESULTS One hundred ninety-seven patients survived implantation of AICD, with or without concomitant cardiac surgery. One hundred five patients had an AICD discharge associated with syncope, presyncope, documented sustained ventricular tachycardia or fibrillation, or sleep at 9.1 +/- 11.1 months after implantation. Patients survived 23.8 +/- 18.0 months after AICD discharge. Left ventricular dysfunction (p = 0.008 for ejection fraction less than 25%) was associated with earlier AICD discharge and shortened survival after AICD discharge (p = 0.008 for ejection fraction less than 25%; p = 0.01 for New York Heart Association functional class III and IV). beta-Blocker administration (p = 0.006) and coronary bypass surgery (p = 0.06) were associated with later AICD discharge. Coronary bypass surgery (p = 0.035) but not beta-blockers was associated with more prolonged survival after AICD discharge. CONCLUSIONS These data suggest that a relatively easy algorithm can be applied to predict which patient will benefit most from AICD implantation.
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Affiliation(s)
- J H Levine
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, Md
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49
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Abstract
Antiarrhythmic drugs may alter the energy for cardioversion of ventricular arrhythmias. This study compares the energy necessary for cardioverting chronic atrial fibrillation in 57 patients taking type Ia, Ic, or type III antiarrhythmic drugs. Patients taking Ia (n = 22) or III (n = 14) drugs had a median energy for cardioversion of 100 joules, while the patients taking Ic (n = 17) drugs had a median energy of 200 joules (P = 0.03). There were no differences in the frequency of unsuccessful cardioversion. There were no serious adverse events in any of the three groups, although three patients in the Ic group had greater than 3 second pauses after the shock. The data suggest that the use of Ic antiarrhythmic drugs results in a higher energy for cardioversion of atrial fibrillation. However with higher energies, conversion is as successful as for type Ia and type III.
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Affiliation(s)
- T Guarnieri
- Johns Hopkins University School of Medicine, Baltimore, Maryland
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50
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Abstract
The distribution of substance P (SP)-like immunoreactivity has been studied in the habenulo-interpeduncular system of the goldfish in normal conditions and after habenular ablation. In normal conditions intense SP-like immunoreactivity was observed in the neuropilar structure of the interpeduncular nucleus (IPN). No SP-like immunoreactive cell bodies were observed in the habenular nuclei (HBN), but some SP-like immunoreactive fibres were localized in the central core of the nucleus. Following surgical habenular ablation SP-like immunoreactivity was reduced in the IPN. The image analysis performed on the IPN showed clear-cut transmittance changes in the area examined. The results suggest that SP is involved in connecting HBN and IPN in goldfish, and are consistent with the data of mammals and other vertebrates.
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Affiliation(s)
- L Villani
- Department of Biology, University of Bologna, Italy
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