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Saporiti F, Piacentini L, Alfieri V, Bono E, Ferrari F, Chiesa M, Colombo GI. Melanocortin-1 Receptor Positively Regulates Human Artery Endothelial Cell Migration. Cell Physiol Biochem 2019; 52:1339-1360. [PMID: 31050282 DOI: 10.33594/000000094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 04/29/2019] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND/AIMS Melanocortin receptors (MCRs) belong to a hormonal signalling pathway with multiple homeostatic and protective actions. Microvascular and umbilical vein endothelial cells (ECs) express components of the melanocortin system, including the type 1 receptor (MC1R), playing a role in modulating inflammation and vascular tone. Since ECs exhibit a remarkable heterogeneity, we investigated whether human artery ECs express any functional MCR and whether its activation affects cell migration. METHODS We used reverse transcription real-time PCR to examine the expression of melanocortin system components in primary human artery ECs. We assessed MC1R protein expression and activity by western blot, immunohistochemistry, cAMP production, and intracellular Ca²⁺ mobilization assays. We performed gap closure and scratch tests to examine cell migration after stimulation with alpha-melanocyte-stimulating hormone (α-MSH), the receptor highest-affinity natural ligand. We assessed differential time-dependent transcriptional changes in migrating cells by microarray analysis. RESULTS We showed that human aortic ECs (HAoECs) express a functionally active MC1R. Unlike microvascular ECs, arterial cells did not express the α-MSH precursor proopiomelanocortin, nor produced the hormone. MC1R engagement with a single pulse of α-MSH accelerated HAoEC migration both in the directional migration assay and in the scratch wound healing test. This was associated with an enhancement in Ca²⁺ signalling and inhibition of cAMP elevation. Time-course genome-wide expression analysis in HAoECs undergoing directional migration allowed identifying dynamic co-regulation of genes involved in extracellular matrix-receptor interaction, vesicle-mediated trafficking, and metal sensing - which have all well-established influences on EC motility -, without affecting the balance between pro- and anticoagulant genes. CONCLUSION Our work broadens the knowledge on peripherally expressed MC1R. These results indicate that the receptor is constitutively expressed by arterial ECs and provide evidence of a novel homeostatic function for MC1R, whose activation may participate in preventing/healing endothelial dysfunction or denudation in macrovascular arteries.
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Affiliation(s)
- Federica Saporiti
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Luca Piacentini
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Valentina Alfieri
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy.,Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Elisa Bono
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Fabrizio Ferrari
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Mattia Chiesa
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Gualtiero I Colombo
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy,
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Marino F, Guasti L, Cosentino M, Piazza DDE, Simoni C, Bianchi V, Piantanida E, Saporiti F, Cimpanelli M, Crespi C, Vanoli P, Palma DDE, Klersy C, Frigo G, Bartalena L, Venco A, Lecchini S. Thyroid Hormone and Thyrotropin Regulate Intracellular Free Calcium Concentrations in Human Polymorphonuclear Leukocytes: In Vivo and in vitro Studies. Int J Immunopathol Pharmacol 2018. [DOI: 10.1177/205873920601900115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Intracellular free calcium concentrations ([Ca++]1) were studied in polymorphonuclear leukocytes (PMNs) from 13 athyreotic patients who had been previously treated by total thyroidectomy and radioiodine therapy for differentiated thyroid carcinoma, and from age- and sex-matched euthyroid healthy controls. Patients were studied twice, when hypothyroid (visit 1) and after restoration of euthyroidism by L-T4 TSH-suppressive therapy (visit 2). PMNs from patients at visit 1 had significantly lower resting [Ca++]1 levels compared to both visit 2 and controls. Values at visit 2 did not differ from those of the controls. Stimulus-induced [Ca++]1 rise was also significantly blunted at visit 1 and normalized at visit 2, possibly through a differential contribution of distinct intracellular Ca++ stores, as suggested by the response pattern to the chemotactic agent, N-formyl-Met-Leu-Phe (fMLP), to the selective SERCA pump inhibitor, thapsigargine, and to the mitochondrial uncoupler, carbonyl cyanide p-trifluoromethoxyphenyl-hydrazone (FCCP). In vitro treatment of PMNs from healthy subjects with high TSH concentrations impaired intracellular Ca++ store function. Both resting [Ca++]1 levels and fMLP-induced [Ca++]1 rise increased in the presence either of low-concentration TSH or of T4, but effects of TSH and T4 were not additive. T3, rT3, and TRIAC had no effect. In conclusion, this study provides evidence for a direct relationship between thyroid status and [Ca[Ca++]1 homeostasis in human PMNs, mainly related to direct actions of TSH and T4 on these cells.
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Affiliation(s)
- F. Marino
- Department of Clinical Medicine, University of Insubria, Varese
| | - L. Guasti
- Department of Clinical Medicine, University of Insubria, Varese
| | - M. Cosentino
- Department of Clinical Medicine, University of Insubria, Varese
| | - D. DE Piazza
- Department of Clinical Medicine, University of Insubria, Varese
| | - C. Simoni
- Department of Clinical Medicine, University of Insubria, Varese
| | - V. Bianchi
- Department of Clinical Medicine, University of Insubria, Varese
| | - E. Piantanida
- Department of Clinical Medicine, University of Insubria, Varese
| | - F. Saporiti
- Department of Clinical Medicine, University of Insubria, Varese
| | - M.G. Cimpanelli
- Department of Clinical Medicine, University of Insubria, Varese
| | - C. Crespi
- Department of Clinical Medicine, University of Insubria, Varese
| | - P. Vanoli
- Section of Nuclear Medicine and Radiotherapy, Ospedale “Di Circolo” e Fondazione Macchi, Varese
| | - D. DE Palma
- Section of Nuclear Medicine and Radiotherapy, Ospedale “Di Circolo” e Fondazione Macchi, Varese
| | - C. Klersy
- Biometry and Clinical Epidemiology, IRCCS Policlinico S. Matteo, Pavia
| | - G.M. Frigo
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - L. Bartalena
- Department of Clinical Medicine, University of Insubria, Varese
| | - A. Venco
- Department of Clinical Medicine, University of Insubria, Varese
| | - S. Lecchini
- Department of Clinical Medicine, University of Insubria, Varese
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Salazar G, Bellocchi C, Todoerti K, Saporiti F, Piacentini L, Scorza R, Colombo GI. Time-course gene expression data on the transcriptional effects of Aminaphtone on ECV304 endothelial cells. Data Brief 2016; 8:836-50. [PMID: 27508230 PMCID: PMC4957571 DOI: 10.1016/j.dib.2016.06.051] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 06/20/2016] [Accepted: 06/27/2016] [Indexed: 11/04/2022] Open
Abstract
We previously showed that Aminaphtone, a drug used in the treatment of chronic venous insufficiency, modulates several vasoactive factors, such as endothelin-1 and adhesion molecules. Here, we provide data of time-course experiments about the effects of Aminaphtone on gene expression at the genome-wide level in human endothelial cells undergoing cytokine stimulation in vitro. ECV-304 endothelial cells were incubated with interleukin-1β (IL-1β) in the presence or absence of Aminaphtone for 1, 3, and 6 h. Gene expression profiles were analyzed by microarray. This article contains complete data on the genes significantly modulated by the drug over time. The data are supplemental to our original research article reporting detailed analysis of the actions of Aminaphtone on IL-1β stimulated endothelial cells at the molecular level, "Gene expression profiling reveals novel protective effects of Aminaphtone on ECV304 endothelial cells" (Salazar et al., 2016) [1].
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Affiliation(s)
- Giulia Salazar
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca׳ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Chiara Bellocchi
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca׳ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Katia Todoerti
- Laboratory of Preclinical and Translational Research, IRCCS-CROB, Referral Cancer Centre of Basilicata, Rionero in Vulture, Italy
| | - Federica Saporiti
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milano, Italy
| | - Luca Piacentini
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milano, Italy
| | - Raffaella Scorza
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca׳ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Gualtiero I Colombo
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milano, Italy
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Salazar G, Bellocchi C, Todoerti K, Saporiti F, Piacentini L, Scorza R, Colombo GI. Gene expression profiling reveals novel protective effects of Aminaphtone on ECV304 endothelial cells. Eur J Pharmacol 2016; 782:59-69. [PMID: 27083548 DOI: 10.1016/j.ejphar.2016.04.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 04/07/2016] [Accepted: 04/11/2016] [Indexed: 01/09/2023]
Abstract
Aminaphtone, a drug used in the treatment of chronic venous insufficiency (CVI), showed a remarkable role in the modulation of several vasoactive factors, like endothelin-1 and adhesion molecules. We analysed in vitro the effects of Aminaphtone on whole-genome gene expression and production of different inflammatory proteins. ECV-304 endothelial cells were stimulated with IL-1β 100U/ml in the presence or absence of Aminaphtone 6μg/ml. Gene expression profiles were compared at 1, 3, and 6h after stimulation by microarray. Supernatants of ECV-304 cultures were analysed at 3, 6, 12, and 24h by multiplex ELISA for production of several cytokine and chemokines. Microarrays showed a significant down-regulation at all times of a wide range of inflammatory genes. Aminaphtone appeared also able to modulate the regulation of immune response process (down-regulating cytokine biosynthesis, transcripts involved in lymphocyte differentiation and cell proliferation, and cytokine-cytokine receptor interaction) and to regulate genes engaged in homeostasis, secretion, body fluid levels, response to hypoxia, cell division, and cell-to-cell communication and signalling. Results were confirmed and extended analysing the secretome, which showed significant reduction of the release of 14 cytokines and chemokines. These effects are predicted to be mediated by interaction with different transcription factors. Aminaphtone was able to modulate the expression of inflammatory molecules relevant to the pathogenesis of several conditions in which the endothelial dysfunction is the main player and early event, like scleroderma, lung fibrosis, or atherosclerosis.
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Affiliation(s)
- Giulia Salazar
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy.
| | - Chiara Bellocchi
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Katia Todoerti
- Laboratory of Preclinical and Translational Research, IRCCS-CROB, Referral Cancer Centre of Basilicata, Rionero in Vulture, Italy
| | - Federica Saporiti
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Luca Piacentini
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Raffaella Scorza
- Referral Centre for Systemic Autoimmune Diseases, University of Milan and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Gualtiero I Colombo
- Laboratory of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
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Bianchessi V, Piacentini L, Chiesa M, Saporiti F, Colombo G, Pesce M, M.C.Vinci. Microarray analysis reveals distinct RNA expression profiles in endothelial progenitor cells exposed to pro-inflammatory environment or oxidized LDL. Vascul Pharmacol 2015. [DOI: 10.1016/j.vph.2015.11.008] [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: 10/22/2022]
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Vinci MC, Piacentini L, Chiesa M, Saporiti F, Colombo GI, Pesce M. Inflammatory environment and oxidized LDL convert circulating human proangiogenic cells into functional antigen-presenting cells. J Leukoc Biol 2015; 98:409-21. [PMID: 25990243 DOI: 10.1189/jlb.3a0814-412rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 04/23/2015] [Indexed: 11/24/2022] Open
Abstract
The function of human circulating PACs has been described extensively. However, little focus has been placed on understanding how these cells differ in their functions in the presence of microenvironments mimicking vascular inflammation. We hypothesized that exposure to proinflammatory cytokines or the oxLDL, an autoantigen abundant in advanced atherosclerotic plaques, converts PACs into immune-modulating/proinflammatory cells. Hence, we examined the effect of oxLDL and inflammatory stimuli on their phenotype by use of a functional genomics model based on secretome and whole genome transcriptome profiling. PACs obtained from culturing a PBMC fraction in angiogenic medium were primed with DC differentiation cytokines and then exposed to proinflammatory cytokines or oxLDL. Under these conditions, PACs converted into APCs, expressed maturation markers CD80 and CD83, and showed an increased up-regulation of CD86. APCcy and APCox induced a robust T cell BrdU incorporation. Despite a similar ability to induce lymphocyte proliferation, APCcy and APCox differed for the secretory pathway and mRNA expression. Analysis of the differentially expressed genes identified 4 gene "clusters," showing reciprocal modulation in APCcy vs. APCox, justifying, according to functional genomics analyses, a different putative function of the cells in antigen processing. Together, these data show that treatment with inflammatory cytokines or oxLDL converts human PAC phenotypes and functions into that of APCs with similar lymphocyte-activating ability but distinct maturation degree and paracrine functions.
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Affiliation(s)
- Maria Cristina Vinci
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Luca Piacentini
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Mattia Chiesa
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Federica Saporiti
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Gualtiero I Colombo
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Maurizio Pesce
- *Unità di Ingegneria Tissutale Cardiovascolare and Unità di Immunologia e Genomica Funzionale, Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milan, Italy
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D'Aiuto L, Di Maio R, Mohan KN, Minervini C, Saporiti F, Soreca I, Greenamyre JT, Chaillet JR. Mouse ES cells overexpressing DNMT1 produce abnormal neurons with upregulated NMDA/NR1 subunit. Differentiation 2011; 82:9-17. [PMID: 21492995 DOI: 10.1016/j.diff.2011.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 03/23/2011] [Accepted: 03/24/2011] [Indexed: 10/18/2022]
Abstract
High levels of DNA methyltransferase 1 (DNMT1), hypermethylation, and downregulation of GAD(67) and reelin have been described in GABAergic interneurons of patients with schizophrenia (SZ) and bipolar (BP) disorders. However, overexpression of DNMT1 is lethal, making it difficult to assess the direct effect of high levels of DNMT1 on neuronal development in vivo. We therefore used Dnmt1(tet/tet) mouse ES cells that overexpress DNMT1 as an in vitro model to investigate the impact of high levels of DNMT1 on neuronal differentiation. Although there is down-regulation of DNMT1 during early stages of differentiation in wild type and Dnmt1(tet/tet) ES cell lines, neurons derived from Dnmt1(tet/tet) cells showed abnormal dendritic arborization and branching. The Dnmt1(tet/tet) neuronal cells also showed elevated levels of functional N-methyl d-aspartate receptor (NMDAR), a feature also reported in some neurological and neurodegenerative disorders. Considering the roles of reelin and GAD(67) in neuronal networking and excitatory/inhibitory balance, respectively, we studied methylation of these genes' promoters in Dnmt1(tet/tet) ES cells and neurons. Both reelin and GAD(67) promoters were not hypermethylated in the Dnmt1(tet/tet) ES cells and neurons, suggesting that overexpression of DNMT1 may not directly result in methylation-mediated repression of these two genes. Taken together, our results suggest that overexpression of DNMT1 in ES cells results in an epigenetic change prior to the onset of differentiation. This epigenetic change in turn results in abnormal neuronal differentiation and upregulation of functional NMDA receptor.
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Affiliation(s)
- Leonardo D'Aiuto
- Department of Microbiology and Molecular Genetics, Magee-Womens Research Institute, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA 15213, USA.
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D'Aiuto L, Marzulli M, Mohan KN, Borowczyk E, Saporiti F, VanDemark A, Chaillet JR. Dissection of structure and function of the N-terminal domain of mouse DNMT1 using regional frame-shift mutagenesis. PLoS One 2010; 5:e9831. [PMID: 20352123 PMCID: PMC2843745 DOI: 10.1371/journal.pone.0009831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 02/27/2010] [Indexed: 11/18/2022] Open
Abstract
Deletion analysis of mouse DNMT1, the primary maintenance methyltransferase in mammals, showed that most of the N-terminal regulatory domain (amino acid residues 412-1112) is required for its enzymatic activity. Although analysis of deletion mutants helps to identify regions of a protein sequence required for a particular activity, amino acid deletions can have drastic effects on protein structure and/or stability. Alternative approaches represented by rational design and directed evolution are resource demanding, and require high-throughput selection or screening systems. We developed Regional Frame-shift Mutagenesis (RFM) as a new approach to identify portions required for the methyltransferase activity of DNMT1 within the N-terminal 89-905 amino acids. In this method, a short stretch of amino acids in the wild-type protein is converted to a different amino acid sequence. The resultant mutant protein retains the same amino acid length as the wild type, thereby reducing physical constrains on normal folding of the mutant protein. Using RFM, we identified three small regions in the amino-terminal one-third of the protein that are essential for DNMT1 function. Two of these regions (amino acids 124-160 and 341-368) border a large disordered region that regulates maintenance methylation activity. This organization of DNMT1's amino terminus suggests that the borders define the position of the disordered region within the DNMT1 protein, which in turn allows for its proper function.
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Affiliation(s)
- Leonardo D'Aiuto
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Marco Marzulli
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - K. Naga Mohan
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Ewa Borowczyk
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Federica Saporiti
- Department of Neurology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Andrew VanDemark
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - J. Richard Chaillet
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Guasti L, Marino F, Cosentino M, Maroni L, Maresca AM, Colombo F, Maio RC, Castiglioni L, Saporiti F, Loraschi A, Gaudio G, Bernasconi A, Laurita E, Grandi AM, Venco A. Cytokine production from peripheral blood mononuclear cells and polymorphonuclear leukocytes in patients studied for suspected obstructive sleep apnea. Sleep Breath 2009; 15:3-11. [PMID: 19924457 DOI: 10.1007/s11325-009-0315-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2009] [Accepted: 10/24/2009] [Indexed: 10/20/2022]
Abstract
PURPOSE The relationship between obstructive sleep apnea (OSA) and atherosclerosis-related inflammation has been poorly investigated, particularly focusing on functional responses of immune cells playing a key role in atherogenesis and in comparison with control groups with similar cardiovascular risk factors which are known to be themselves associated with inflammation. We sought to determine cellular tumor necrosis factor-alpha (TNF-α) production from peripheral blood mononuclear cells (PBMCs) and interleukin (IL)-8 release from neutrophils (PMNs) in patients studied for suspected OSA. METHODS Thirty-six consecutive patients who underwent a nocturnal complete cardiorespiratory evaluation for suspected OSA were initially evaluated. Serum, PBMCs, and PMNs were isolated (at baseline and after 12 weeks) from patients with apnea-ipopnea index (AHI) >20 (OSA group, n = 16) and from control patients with AHI <5 (nonOSA group, n = 11). All patients continued the same pharmacological therapy for 12 weeks; the OSA group was additionally treated with nocturnal continuous positive-airway-pressure ventilation (cPAP). RESULTS The two groups had similar clinical characteristics (prevalence of hypertension, dyslipidemia, diabetes, and cardio-metabolic therapies) except for obesity. Resting and stimulated TNF-α production from PBMCs and IL-8 release from PMNs were similar in the two groups. Serum cytokines resulted within the normal range. In the OSA group, cPAP was not associated with changes in cellular responses. CONCLUSIONS In patients showing similar prevalence of major cardiovascular risk factors and cardio-metabolic therapies, differing for the presence or absence of OSA, cytokine productions from PBMC and PMN were similar and were not modified during cPAP therapy. Studies designed to investigate OSA-associated inflammation should carefully match the control group subjects.
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Affiliation(s)
- Luigina Guasti
- Research Center on Dyslipidemia, Department of Clinical Medicine, University of Insubria, Viale Borri 57, Varese, 21100, Italy.
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Cosentino M, Fietta AM, Ferrari M, Rasini E, Bombelli R, Carcano E, Saporiti F, Meloni F, Marino F, Lecchini S. Human CD4+CD25+ regulatory T cells selectively express tyrosine hydroxylase and contain endogenous catecholamines subserving an autocrine/paracrine inhibitory functional loop. Blood 2006; 109:632-42. [PMID: 16985181 DOI: 10.1182/blood-2006-01-028423] [Citation(s) in RCA: 220] [Impact Index Per Article: 12.2] [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: 11/20/2022] Open
Abstract
CD4+CD25+ regulatory T lymphocytes (Tregs) are specialized T cells playing a key role in the control of immune homeostasis. Here, we show that human Tregs constitutively express tyrosine hydroxylase (TH, EC 1.14.16.2), the rate-limiting enzyme in the synthesis of catecholamines, and contain substantial amounts of dopamine, norepinephrine, and epinephrine, which are released upon treatment with reserpine. Catecholamine release results in reduced production of interleukin-10 and transforming growth factor-beta by Tregs, and in down-regulation of Treg-dependent inhibition of effector T-lymphocyte (Teff) proliferation, which occurs without affecting the production of tumor necrosis factor-alpha or interferon-gamma. Tregs and Teffs express on the cell membrane both D1-like and D2-like dopaminergic receptors to a similar extent (12%-29% of the cells). Catecholamine-dependent down-regulation of Tregs is, however, selectively reversed by pharmacological blockade of dopaminergic D1-like receptors, which in Tregs only (and not in Teffs) are also expressed at the level of mRNA and are functionally coupled to intracellular production of cAMP. These findings indicate that in human Tregs endogenous catecholamines subserve an autocrine/paracrine loop involving dopaminergic pathways and resulting in down-regulation of Treg function.
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Affiliation(s)
- Marco Cosentino
- Department of Clinical Medicine, Section of Experimental and Clinical Pharmacology, Center for Research in Neuroscience, University of Insubria, Via Ottorino Rossi n. 9, 21100 Varese VA, Italy.
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Marino F, Guasti L, Cosentino M, De Piazza D, Simoni C, Bianchi V, Piantanida E, Saporiti F, Cimpanelli MG, Crespi C, Vanoli P, De Palma D, Klersy C, Frigo GM, Bartalena L, Venco A, Lecchini S. Thyroid hormone and thyrotropin regulate intracellular free calcium concentrations in human polymorphonuclear leukocytes: in vivo and in vitro studies. Int J Immunopathol Pharmacol 2006; 19:149-60. [PMID: 16569353] [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: 05/08/2023] Open
Abstract
Intracellular free calcium concentrations (Ca++i) were studied in polymorphonuclear leukocytes (PMNs) from 13 athyreotic patients who had been previously treated by total thyroidectomy and radioiodine therapy for differentiated thyroid carcinoma, and from age- and sex-matched euthyroid healthy controls. Patients were studied twice, when hypothyroid (visit 1) and after restoration of euthyroidism by L-T4 TSH-suppressive therapy (visit 2). PMNs from patients at visit 1 had significantly lower resting (Ca++)i levels compared to both visit 2 and controls. Values at visit 2 did not differ from those of the controls. Stimulus-induced (Ca++)i rise was also significantly blunted at visit 1 and normalized at visit 2, possibly through a differential contribution of distinct intracellular Ca++ stores, as suggested by the response pattern to the chemotactic agent, N-formyl-Met-Leu-Phe (fMLP), to the selective SERCA pump inhibitor, thapsigargine, and to the mitochondrial uncoupler, carbonyl cyanide p-trifluoromethoxyphenyl-hydrazone (FCCP). In vitro treatment of PMNs from healthy subjects with high TSH concentrations impaired intracellular Ca++ store function. Both resting (Ca++)i levels and fMLP-induced (Ca++)i rise increased in the presence either of low-concentration TSH or of T4, but effects of TSH and T4 were not additive. T3, rT3, and TRIAC had no effect. In conclusion, this study provides evidence for a direct relationship between thyroid status and (Ca++)i homeostasis in human PMNs, mainly related to direct actions of TSH and T4 on these cells.
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Affiliation(s)
- F Marino
- Department of Clinical Medicine, University of Insubria, Via Ottorino Rossi n. 9, 21100 Varese VA- Italy
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Giovinetto R, Roletti S, Saporiti F. The percentage of the population exposed to harmful acoustic pollution levels resulting from vehicular traffic in the Hospital' area of Turin. Radiat Prot Dosimetry 2004; 111:385-389. [PMID: 15550707 DOI: 10.1093/rpd/nch059] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper presents the methodology and the main results of a study that has as its principal aim, the experimental identification the application and the quantification of the sustainable indicator 'Percentage of the population exposed to acoustic pollution levels' in the 'Hospital' area of Turin. The investigation of this indicator was prompted by the province of Turin's previous categorisation as 'Lead City' in the project 'Towards a support description at local the level--European Community Indicators'. Alongside, the process of experimenting, applying and quantifying the sustainable indicator--and as a logical fit with what was foreseen by the Italian normative regulation on protection against environmental acoustic pollution--the study supplies the base elements to analyse the environmental acoustic climate conditions in an important area of the city and defines the interaction tools that are the environmental indicators for the town council's future Acoustic Restoration Plan (PRA).
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Affiliation(s)
- R Giovinetto
- ENVIA--Urban Site, Via Calandra 9, 10123 Torino/Rural Site, Via C. Alberto 28, 10090 San Giorgio, Canavese, Italy.
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Madonini E, Briatico-Vangosa G, Pappacoda A, Maccagni G, Cardani A, Saporiti F. Seasonal increase of bronchial reactivity in allergic rhinitis. J Allergy Clin Immunol 1987; 79:358-63. [PMID: 3819219 DOI: 10.1016/0091-6749(87)90156-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Twenty-seven patients with hay fever had a carbachol inhalation challenge both out of season and during the pollen season. Eight patients with allergic asthma were used as a control group. Only three patients (11.1%) demonstrated a value of a provocative dose causing a 20% fall in FEV1 in the asthmatic range out of pollen season, but during pollen exposure, the number of positive responses significantly increased to 13 (48.1%). We observed differences regarding mean age, age of onset of symptoms, sex, and family history between patients with positive responses and patients who failed to react to inhalation challenge. It appears reasonable that an aspecific bronchial provocation test, performed during the pollen season, can detect with greater sensitivity patients with hay fever at risk of developing asthma in the future, and it also appears reasonable that these patients should be treated differently from subjects with "pure" allergic rhinitis. We expect the ongoing follow-up to clarify the prognostic value to be attributed to these findings.
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Imbimbo BP, Daniotti S, Vidi A, Foschi D, Saporiti F, Ferrante L. Discontinuous oral absorption of cimetropium bromide, a new antispasmodic drug. J Pharm Sci 1986; 75:680-4. [PMID: 3761170 DOI: 10.1002/jps.2600750713] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The pharmacokinetic profiles of cimetropium bromide, after either intravenous injection of 10 mg or oral ingestion of 200 mg, were determined in eight healthy volunteers. After intravenous administration, the plasma levels and urinary excretion indicated that the drug is distributed and eliminated at a rapid rate (terminal half-life, 50 +/- 8 min) and that urinary excretion is not the exclusive route of elimination (46 +/- 2%) of the administered dose). After oral administration, a low percentage of the drug is absorbed (1-4% of the administered dose), however, the amount is sufficient for therapeutic effect. The absorption is discontinuous, with two distinct phases, and ends abruptly during the second phase.
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