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Selva J, Lorito S, Volpe M, Romano F, Tonini R, Perfetti P, Bernardi F, Taroni M, Scala A, Babeyko A, Løvholt F, Gibbons SJ, Macías J, Castro MJ, González-Vida JM, Sánchez-Linares C, Bayraktar HB, Basili R, Maesano FE, Tiberti MM, Mele F, Piatanesi A, Amato A. Probabilistic tsunami forecasting for early warning. Nat Commun 2021; 12:5677. [PMID: 34584083 PMCID: PMC8479076 DOI: 10.1038/s41467-021-25815-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/23/2021] [Indexed: 02/08/2023] Open
Abstract
Tsunami warning centres face the challenging task of rapidly forecasting tsunami threat immediately after an earthquake, when there is high uncertainty due to data deficiency. Here we introduce Probabilistic Tsunami Forecasting (PTF) for tsunami early warning. PTF explicitly treats data- and forecast-uncertainties, enabling alert level definitions according to any predefined level of conservatism, which is connected to the average balance of missed-vs-false-alarms. Impact forecasts and resulting recommendations become progressively less uncertain as new data become available. Here we report an implementation for near-source early warning and test it systematically by hindcasting the great 2010 M8.8 Maule (Chile) and the well-studied 2003 M6.8 Zemmouri-Boumerdes (Algeria) tsunamis, as well as all the Mediterranean earthquakes that triggered alert messages at the Italian Tsunami Warning Centre since its inception in 2015, demonstrating forecasting accuracy over a wide range of magnitudes and earthquake types.
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Affiliation(s)
- J Selva
- Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy.
| | - S Lorito
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - M Volpe
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - F Romano
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - R Tonini
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - P Perfetti
- Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy
| | - F Bernardi
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - M Taroni
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - A Scala
- Department of Physics "Ettore Pancini", University of Naples, Naples, Italy
| | - A Babeyko
- German Research Centre for Geosciences (GFZ), Potsdam, Germany
| | - F Løvholt
- Norwegian Geotechnical Institute (NGI), Oslo, Norway
| | - S J Gibbons
- Norwegian Geotechnical Institute (NGI), Oslo, Norway
| | - J Macías
- Grupo EDANYA, Universidad de Málaga, Málaga, Spain
| | - M J Castro
- Grupo EDANYA, Universidad de Málaga, Málaga, Spain
| | | | | | - H B Bayraktar
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
- Department of Physics "Ettore Pancini", University of Naples, Naples, Italy
| | - R Basili
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - F E Maesano
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - M M Tiberti
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - F Mele
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - A Piatanesi
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
| | - A Amato
- Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
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Martinelli N, Moruzzi S, Castagna A, Udali S, Baroni M, Pattini P, Ruzzenente A, Conci S, Campagnaro T, Woodhams B, Van Dreden P, Guglielmi A, Bernardi F, Olivieri O, Friso S. PO-25 Plasma levels of activated factor VII–antithrombin complex predict mortality in subjects with liver and colon cancer undergoing curative surgical intervention. Thromb Res 2021. [DOI: 10.1016/s0049-3848(21)00198-5] [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: 10/21/2022]
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Ziliotto N, Zivadinov R, Baroni M, Marchetti G, Jakimovski D, Bergsland N, Ramasamy DP, Weinstock-Guttman B, Straudi S, Manfredini F, Ramanathan M, Bernardi F. Plasma levels of protein C pathway proteins and brain magnetic resonance imaging volumes in multiple sclerosis. Eur J Neurol 2019; 27:235-243. [PMID: 31408242 DOI: 10.1111/ene.14058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 07/12/2019] [Accepted: 08/05/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE The involvement of protein C (PC) pathway components in multiple sclerosis (MS) has scarcely been explored. The aim was to investigate their levels in relation to clinical and neurodegenerative magnetic resonance imaging (MRI) outcomes in patients. METHODS In all, 138 MS patients and 42 healthy individuals were studied. PC, protein S (PS) and soluble endothelial protein C receptor (sEPCR) were evaluated by multiplex assays and enzyme-linked immunosorbent assay. Regression analyses between 3 T MRI outcomes and PC pathway components were performed. ancova was used to compare MRI volumes based on protein level quartiles. Partial correlation was assessed amongst levels of PC pathway components and hemostasis protein levels, including soluble thrombomodulin (sTM), heparin cofactor II (HCII), plasminogen activator inhibitor 1 (PAI-1) and factor XII (FXII). The variation of PC concentration across four time points was evaluated in 32 additional MS patients. RESULTS There was an association between PC concentration, mainly reflecting the zymogen PC, and MRI measures for volumes of total gray matter (GM) (P = 0.003), thalamus (P = 0.007), cortex (P = 0.008), deep GM (P = 0.009) and whole brain (P = 0.026). Patients in the highest PC level quartile were characterized by the lowest GM volumes. Correlations of PC-HCII, PC-FXII and sEPCR-sTM values were detectable in MS patients, whilst PC-PS and PS-PAI-1 correlations were present in healthy individuals only. CONCLUSIONS Protein C plasma concentrations might be associated with neurodegenerative MRI outcomes in MS. Several differences in correlation amongst protein plasma levels suggest dysregulation of PC pathway components in MS patients. The stability of PC concentration over time supports a PC investigation in relation to GM atrophy in MS.
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Affiliation(s)
- N Ziliotto
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.,Buffalo Neuroimaging Analysis Center, Buffalo, NY, USA
| | - R Zivadinov
- Buffalo Neuroimaging Analysis Center, Buffalo, NY, USA.,Neurology, State University of New York, Buffalo, NY, USA
| | - M Baroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - G Marchetti
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - D Jakimovski
- Buffalo Neuroimaging Analysis Center, Buffalo, NY, USA
| | - N Bergsland
- Buffalo Neuroimaging Analysis Center, Buffalo, NY, USA
| | - D P Ramasamy
- Buffalo Neuroimaging Analysis Center, Buffalo, NY, USA
| | | | - S Straudi
- Department of Neuroscience and Rehabilitation, Ferrara University Hospital, Ferrara, Italy
| | - F Manfredini
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - M Ramanathan
- Department of Pharmaceutical Sciences, State University of New York, Buffalo, NY, USA
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
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Pignani S, Todaro A, Ferrarese M, Marchi S, Lombardi S, Balestra D, Pinton P, Bernardi F, Pinotti M, Branchini A. The chaperone-like sodium phenylbutyrate improves factor IX intracellular trafficking and activity impaired by the frequent p.R294Q mutation. J Thromb Haemost 2018; 16:2035-2043. [PMID: 29993188 DOI: 10.1111/jth.14236] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 03/07/2018] [Indexed: 12/25/2022]
Abstract
Essentials Missense mutations often impair protein folding, and thus intracellular trafficking and secretion. Cellular models of severe type I hemophilia B were challenged with chaperone-like compounds. Sodium phenylbutyrate improved intracellular trafficking and secretion of the frequent p.R294Q. The increased coagulant activity levels (∼3%) of p.R294Q would ameliorate the bleeding phenotype. SUMMARY Background Missense mutations often impair protein folding and intracellular processing, which can be improved by small compounds with chaperone-like activity. However, little has been done in coagulopathies, where even modest increases of functional levels could have therapeutic implications. Objectives To rescue the expression of factor IX (FIX) variants affected by missense mutations associated with type I hemophilia B (HB) through chaperone-like compounds. Methods Expression studies of recombinant (r)FIX variants and evaluation of secreted levels (ELISA), intracellular trafficking (immunofluorescence) and activity (coagulant assays) before and after treatment of cells with chaperone-like compounds. Results As a model we chose the most frequent HB mutation (p.R294Q, ~100 patients), compared with other recurrent mutations associated with severe/moderate type I HB. Immunofluorescence studies revealed retention of rFIX variants in the endoplasmic reticulum and negligible localization in the Golgi, thus indicating impaired intracellular trafficking. Consistently, and in agreement with coagulation phenotypes in patients, all missense mutations resulted in impaired secretion (< 1% wild-type rFIX). Sodium phenylbutyrate (NaPBA) quantitatively improved trafficking to the Golgi and dose dependently promoted secretion (from 0.3 ± 0.1% to 1.5 ± 0.3%) only of the rFIX-294Q variant. Noticeably, this variant displayed a specific coagulant activity that was higher (~2.0 fold) than that of wild-type rFIX in all treatment conditions. Importantly, coagulant activity was concurrently increased to levels (3.0 ± 0.9%) that, if achieved in patients, would ameliorate the bleeding phenotype. Conclusions Altogether, our data detail molecular mechanisms underlying type I HB and candidate NaPBA as affordable 'personalized' therapeutics for patients affected by the highly frequent p.R294Q mutation, and with reduced access to substitutive therapy.
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Affiliation(s)
- S Pignani
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - A Todaro
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - M Ferrarese
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - S Marchi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, University of Ferrara, Ferrara, Italy
| | - S Lombardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - D Balestra
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - P Pinton
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, University of Ferrara, Ferrara, Italy
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - M Pinotti
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - A Branchini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
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Abstract
SummaryA protein S gene polymorphism, detectable by restriction analysis (BstXI) of amplified exonic sequences (exon 15), was studied in seven Italian families with protein S deficiency. In the 17 individuals heterozygous for the polymorphism the study was extended to platelet mRNA through reverse transcription, amplification and densitometric analysis. mRNA produced by the putative defective protein S genes was absent in three families and reduced to a different extent (as expressed by altered allelic ratios) in four families. The allelic ratios helped to distinguish total protein S deficiency (type I) from free protein S deficiency (type IIa) in families with equivocal phenotypes. This study indicates that the study of platelet mRNA, in association with phenotypic analysis based upon protein S assays in plasma, helps to classify patients with protein S deficiency.
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Affiliation(s)
- E Sacchi
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - M Pinotti
- Centro di Studi Biochimici delle Patologie del Genoma Umano, Dipartimento Biochimica e Biologia Molecolare, Università di Ferrara, Italy
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - G Marchetti
- Centro di Studi Biochimici delle Patologie del Genoma Umano, Dipartimento Biochimica e Biologia Molecolare, Università di Ferrara, Italy
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - G Merati
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - L Tagliabue
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - P M Mannucci
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - F Bernardi
- Centro di Studi Biochimici delle Patologie del Genoma Umano, Dipartimento Biochimica e Biologia Molecolare, Università di Ferrara, Italy
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
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Castoldi E, Lunghi B, Mingozzi F, Loannou P, Marchetti G, Bernardi F. New Coagulation Factor V Gene Polymorphisms Define a Single and Infrequent Haplotype Underlying the Factor V Leiden Mutation in Mediterranean Populations and Indians. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1657683] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryTwo novel polymorphisms were identified in the factor V gene by direct sequencing of intronic areas. One of them, located in intron 9, is the marker closest to the Leiden mutation ever described, whereas the other, in intron 16, displays a rare allele invariantly associated to the mutation. Allele-specific amplification protocols were designed to perform extensive screenings for both polymorphic sites. The new markers were used in combination with six previously described polymorphisms to define specific factor V gene haplotypes. Haplotype investigations in 506Q homozygous thrombotic patients and normal controls showed the presence of a single haplotype underlying the factor V Leiden mutation in Mediterranean populations (among which Greek Cypriots, where the R506Q mutation is particularly frequent) and Indians. When traced in the absence of the Leiden mutation, the background haplotype was found to be present and roughly as frequent as the mutation itself in these populations. These findings indicate a single mutational event, that probably occurred outside Europe, as the cause of the Leiden mutation and provide a powerful tool to investigate its evolutionary history.
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Affiliation(s)
- E Castoldi
- Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Italy
| | - B Lunghi
- Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Italy
| | - F Mingozzi
- Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Italy
| | - P Loannou
- Dept. of Molecular Genetics, The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus
| | - G Marchetti
- Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Italy
| | - F Bernardi
- Dipartimento di Biochimica e Biologia Molecolare, Universitá di Ferrara, Italy
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Gandrille S, Borgel D, Ireland H, Lane DA, Simmonds R, Reitsma PH, Mannhalter C, Pabinger I, Saito H, Suzuki K, Formstone C, Cooper DN, Espinosa Y, Sala N, Bernardi F, Aiach M. Protein S Deficiency: A Database of Mutations. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1656138] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- S Gandrille
- The INSERM U. 428, UFR des Sciences Pharmaceutiques et Biologiques, Paris, France
| | - D Borgel
- The INSERM U. 428, UFR des Sciences Pharmaceutiques et Biologiques, Paris, France
| | - H Ireland
- Department of Haematology, Charing Cross 8c Westminster Medical School, London, UK
| | - D A Lane
- Department of Haematology, Charing Cross 8c Westminster Medical School, London, UK
| | - R Simmonds
- Department of Haematology, Charing Cross 8c Westminster Medical School, London, UK
| | - P H Reitsma
- Haemostasis and Thrombosis Research Center, University Hospital Leiden, Leiden, and Laboratory of Experimental Internal Medicine, Academic Medical Center University of Amsterdam, The Netherlands
| | - C Mannhalter
- Department of Laboratory Medicine, Molecular Biology Division and Department of Internal Medicine, Division of Haematology and Blood Coagulation, and Klinische Abteilung für Hämatologie und Hämostaseologie, Allgemeines Krankenhaus der Stadt Wien, Wien, Austria
| | - I Pabinger
- Department of Laboratory Medicine, Molecular Biology Division and Department of Internal Medicine, Division of Haematology and Blood Coagulation, and Klinische Abteilung für Hämatologie und Hämostaseologie, Allgemeines Krankenhaus der Stadt Wien, Wien, Austria
| | - H Saito
- Department of Molecular Pathobiology, Mie University School of Medicine, Mie, Japan
| | - K Suzuki
- Department of Molecular Pathobiology, Mie University School of Medicine, Mie, Japan
| | - C Formstone
- Department of Biochemistry, Imperial College, London, UK
| | - D N Cooper
- Institute of Medical Genetics, University of Wales College of Medicine, Cardiff, UK
| | - Y Espinosa
- Molecular Genetics Department, Institut de Recerca Oncologica (I.R.O.), Barcelona, Spain
| | - N Sala
- Molecular Genetics Department, Institut de Recerca Oncologica (I.R.O.), Barcelona, Spain
| | - F Bernardi
- Dipartimento Biochimica e Biologia Moleculare, Università degli studi di Ferrara, Ferrara, Italy
| | - M Aiach
- The INSERM U. 428, UFR des Sciences Pharmaceutiques et Biologiques, Paris, France
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Lunghi B, Iacoviello L, Gemmati D, Dilasio MG, Castoldi E, Pinotti M, Castaman G, Redaelli R, Mariani G, Marchetti G, Bernardi F. Detection of New Polymorphic Markers in the Factor V Gene: Association with Factor V Levels in Plasma. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1650219] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThree novel polymorphisms were found in the repeated region of the large exon 13 of factor V gene, one giving rise to a codon dimorphism (Serl240) and two causing aminoacid substitutions (Hisl299Arg, Leul257Ile). An increasing frequency of the Argl299 (R2 allele) correlated with a decreasing mean plasma factor V activity in the groups of subjects under study, which included 26 unrelated subjects with partial factor V deficiency. Family studies supported the co-inheritance both of low factor V activity and of R2 allele. The reduction of factor V activity associated with the R2 allele was not clinically symptomatic even in the homozygous condition and was characterized by a parallel reduction of antigen in plasma, in which abnormal molecules were not detected. Data suggest that the R2 allele represents a marker in linkage with an unknown defect rather than a functional polymorphism.These studies provide the first evidence of a genetic component in determining factor V levels in plasma and of a genetic linkage between the factor V gene and factor V deficiency. They also define specific haplotypes which are associated with factor V deficiency or with APC resistance (Arg506Gln) and are valuable fools for the study of factor V defects.
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Affiliation(s)
- B Lunghi
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - L Iacoviello
- The “Angela Valenti” Lab. Thrombosis Pharmacology, 1st. di Ricerche Farmacologiche Mario Negri; Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - D Gemmati
- The Centro Emostasi e Trombosi, Università di Ferrara, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - M G Dilasio
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - E Castoldi
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - M Pinotti
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - G Castaman
- The Divisione di Ematologia - CRS Malattie Emorragiche e Trombotiche, Osp. S. Bortolo, Vicenza, Italy
| | - R Redaelli
- The Div. di Ematologia, Osp. Niguarda, Milano, Italy
| | - G Mariani
- The Dip. di Biopatologia Umana, Sezione di Ematologia, Università La Sapienza, Roma; Italy
| | - G Marchetti
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
| | - F Bernardi
- The Dip. di Biochimica e Biologia Molecolare, Consorzio Mario Negri Sud, S. Maria Imbaro, Italy
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Reitsma PH, Bernardi F, Doig RG, Gandrille S, Greengard JS, Ireland H, Krawczak M, Lind B, Long GL, Poort SR, Saito H, Sala N, Witt I, Cooper DN. Protein C Deficiency: A Database of Mutations, 1995 Update. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1653885] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- P H Reitsma
- the hemostasis and Thrombosis Research Center, University Hospital, Leiden, The Netherlands
| | - F Bernardi
- Dipartimento Biochimica e Biologia Moleculare, Università degli studi di Ferrara, Ferrara, Italy
| | - R G Doig
- Diagnostic Haematology, The Royal Melbourne Hospital, Victoria, Australia
| | - S Gandrille
- INSERM CJF 91-01, UFR des Sciences Pharma- ceutiques et Biologiques, Paris, France
| | - J S Greengard
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - H Ireland
- Department of Haematology, Charing Cross & Westminster Medical School, London, UK
| | - M Krawczak
- Abteilung Humangenetik, Medizinische Hochschule, Hannover, Germany
| | - B Lind
- Section for Hemostasis and Thrombosis, Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - G L Long
- Department of Biochemistry, School of Medicine, University of Vermont, Burlington, VT, USA
| | - S R Poort
- the hemostasis and Thrombosis Research Center, University Hospital, Leiden, The Netherlands
| | - H Saito
- First Department of Internal Medicine, Nagoya University School of Medicine, Tsurumai-cho, Nagoya, Japan
| | - N Sala
- Cancer Research Institute, Hospital Duran I Reynals, Barcelona, Spain
| | - I Witt
- Biochemisches Labor, Universitäts-Kinderklinik Freiburg, Freiburg, Germany
| | - D N Cooper
- Charter Molecular Genetics Laboratory, Thrombosis Research Institute, London, UK
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Faioni EM, Franchi F, Asti D, Sacchi E, Bernardi F, Mannucci PM. Resistance to Activated Protein C in Nine Thrombophilic Families: Interference in a Protein S Functional Assay. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649729] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryNine thrombophilic patients who had had previous diagnoses of functional protein S deficiency were reinvestigated. The functional protein S assays gave dose-response curves that were not parallel to those of the reference plasma. The same pattern was true for approximately half of the first-degree relatives of the propositi. When protein S was extracted from the plasma of the patients by immunoabsorption, it had a normal ratio of functional activity to immunologic concentration. Restriction fragment length polymorphism analysis, informative in one family, showed no linkage between the protein S gene marker and the abnormal behavior of the protein S functional assay. All the propositi and 23/36 first-degree relatives were resistant to the prolongation of activated partial thromboplastin time induced by activated protein C. Furthermore, there was striking concordance in all patients and relatives between the abnormal pattern of the protein S functional assay and resistance to activated protein C. We conclude that a plasma-based functional protein S assay is sensitive to activated protein C resistance and this may lead to spuriously low results in the assay. In agreement with the results of others, this study indicates that resistance to activated protein C is a frequent hemostatic defect in selected thrombophilic populations.
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Affiliation(s)
- E M Faioni
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - F Franchi
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - D Asti
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - E Sacchi
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
| | - F Bernardi
- The Istituto di Chimica Biologica, University of Ferrara, Italy
| | - P M Mannucci
- The Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Maggiore Hospital and University of Milano, Italy
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Affiliation(s)
- P H Reitsma
- The Hemostasis and Thrombosis Research Unit, University, Hospital, Leiden, The Netherlands
| | - S R Poort
- The Hemostasis and Thrombosis Research Unit, University, Hospital, Leiden, The Netherlands
| | - F Bernardi
- The Istituto di Chimica Biologica, Università degli Studi Ferrara, Ferrara, Italy
| | - S Gandrille
- The Laboratoire Hemostase, Hôpital Broussais, Paris, France
| | - G L Long
- The Department of Biochemistry, University of Vermont, Burlington, Vermont, USA
| | - N Sala
- The Department of Molecular Genetics, Hospital Duran i Reynals, I.R.O., Barcelona, Spain
| | - D N Cooper
- The Charter Molecular Genetics Laboratory, Thrombosis Research Institute, London, UK
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Ziliotto N, Bernardi F, Jakimovski D, Baroni M, Marchetti G, Bergsland N, Ramasamy DP, Weinstock-Guttman B, Schweser F, Zamboni P, Ramanathan M, Zivadinov R. Hemostasis biomarkers in multiple sclerosis. Eur J Neurol 2018; 25:1169-1176. [PMID: 29758118 DOI: 10.1111/ene.13681] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 11/21/2017] [Accepted: 05/03/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND PURPOSE The aim was to investigate the plasma levels of hemostasis components in multiple sclerosis (MS) and their association with clinical and magnetic resonance imaging (MRI) outcomes. METHODS In all, 138 MS patients [85 with relapsing-remitting MS (RR-MS) and 53 with progressive MS (P-MS) with a mean age of 54 years; 72.5% female; median Expanded Disability Status Scale 3.5; mean disease duration 21 years] and 42 age- and sex-matched healthy individuals (HI) were studied. All subjects were examined with 3 T MRI and clinical examinations. Plasma levels of hemostasis factors [procoagulant, factor XII (FXII)] and inhibitors [tissue factor pathway inhibitor (TFPI), thrombomodulin, heparin cofactor II, a disintegrin-like and metalloprotease with thrombospondin type 1 motif 13 (ADAMTS13) and plasminogen activator inhibitor 1 (PAI-1)] were evaluated by magnetic Luminex assays and enzyme-linked immunosorbent assay. Associations between hemostasis plasma levels and clinical and MRI outcomes were assessed. RESULTS Lower ADAMTS13 levels were found in MS patients compared to HI (P = 0.008) and in MS patients presenting with cerebral microbleeds compared to those without (P = 0.034). Higher PAI-1 levels were found in MS patients compared to HI (P = 0.02). TFPI levels were higher in the P-MS subgroup compared to RR-MS patients (P = 0.011) and compared to HI (P = 0.002). No significant associations between hemostasis plasma levels and clinical or MRI outcomes were found. CONCLUSIONS Decreased ADAMTS13, particularly in MS patients with cerebral microbleeds, which deserves further investigation, and increased PAI-1 and TFPI levels were observed in MS patients, which deserves further investigation. No relationship between hemostasis plasma levels and measures of disease severity was detected.
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Affiliation(s)
- N Ziliotto
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.,Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - D Jakimovski
- Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - M Baroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - G Marchetti
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - N Bergsland
- Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - D P Ramasamy
- Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - B Weinstock-Guttman
- Jacobs Comprehensive MS Treatment and Research Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - F Schweser
- Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA.,Center for Biomedical Imaging, Clinical Translational Science Institute, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - P Zamboni
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - M Ramanathan
- Department of Pharmaceutical Sciences, State University of New York, Buffalo, NY, USA
| | - R Zivadinov
- Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA.,Center for Biomedical Imaging, Clinical Translational Science Institute, University at Buffalo, State University of New York, Buffalo, NY, USA
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13
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Lombardi G, Petrucci R, Corsini I, Bacchi Reggiani ML, Visciotti F, Bernardi F, Landini MP, Cazzato S, Dal Monte P. Quantitative Analysis of Gamma Interferon Release Assay Response in Children with Latent and Active Tuberculosis. J Clin Microbiol 2018; 56:e01360-17. [PMID: 29142046 PMCID: PMC5786731 DOI: 10.1128/jcm.01360-17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/08/2017] [Indexed: 12/22/2022] Open
Abstract
The use of interferon gamma (IFN-γ) release assays (IGRAs) for the diagnosis of tuberculosis (TB) infection in children is still under debate because of concerns about the immature immune response in children. The aim of this study was to investigate quantitative values of the QuantiFERON-TB Gold In-Tube (QFT-IT) test, a commercially available IGRA, in a large cohort of children screened for TB infection. A retrospective analysis was conducted on samples from 517 children aged 0 to 14 years old at the Pediatric Unit of S. Orsola-Malpighi University Hospital of Bologna (Italy); quantitative responses to QFT-IT stimuli were analyzed according to diagnosis and age. Elevated IFN-γ values in the QFT-IT nil (background) tube were statistically associated with diagnosis of active TB. Quantitative IFN-γ response to Mycobacterium tuberculosis-specific antigens (TB Ag) was not significantly different in children with active TB compared to those with latent TB infection (LTBI), even though the median values were higher in the first group. When children were grouped by age, those less than 5 years old produced significantly higher levels of IFN-γ in response to TB Ag if they had active TB (median 10 IU/ml) than those with LTBI (median 1.96 IU/ml). IFN-γ response to mitogen increased with age. The overall rate of indeterminate results was low (3.9%), and no indeterminate QFT-IT values were observed in active or latent TB patients. In conclusion, quantitative QFT-IT values could provide further information to clinicians to manage TB in children, and these observations could be transferred to the new version of the test, QuantiFERON-TB Gold Plus, which to date lacks data from the pediatric population.
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Affiliation(s)
- Giulia Lombardi
- Department of Experimental, Diagnostic and Specialty Medicine-Microbiology Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Roberta Petrucci
- Paediatric Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Ilaria Corsini
- Unit of Pediatric Emergency, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Maria Letizia Bacchi Reggiani
- Department of Experimental, Diagnostic and Specialty Medicine, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | | | - Filippo Bernardi
- Unit of Pediatric Emergency, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Maria Paola Landini
- Department of Experimental, Diagnostic and Specialty Medicine-Microbiology Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Salvatore Cazzato
- Paediatric Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Paola Dal Monte
- Department of Experimental, Diagnostic and Specialty Medicine-Microbiology Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
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14
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Borgel D, Sala N, Espinosa-Parrilla Y, Simmonds R, Rezende S, Lind B, Mannhalter C, Pabinger I, Reitsma PH, Formstone C, Cooper DN, Saito H, Suzuki K, Bernardi F, Aiach M, Gandrille S. Protein S Deficiency: A Database of Mutations – Summary of the First Update. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1614137] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Doggen CJM, Zivelin A, Arruda VR, Aiach M, Siscovick DS, Hillarp A, Watzke HH, Bernardi F, Cumming AM, Preston FE, Reitsma PH, Rosendaal FR. Geographic Distribution of the 20210 G to A Prothrombin Variant. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615049] [Citation(s) in RCA: 306] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryA variant in prothrombin (clotting factor II), a G to A transition at nucleotide position 20210, has recently been shown to be associated with the prothrombin plasma levels and the risk of both venous and arterial thrombosis. The purpose of this study was to investigate the prevalence of carriership of this mutation in various populations.We combined data from 11 centres in nine countries, where tests for this mutation had been performed in groups representing the general population. We calculated an overall prevalence estimate, by a precision-weighted method, and, since the distribution of the prevalences did not appear homogeneous, by an unweighted average of the prevalences. We examined differences in the prevalences by geographical location and ethnic background as a possible explanation for the heterogeneity.Among a total of 5527 individuals who had been tested, 111 heterozygous carriers of the 20210A mutation were found. The prevalence estimates varied from 0.7 to 4.0 between the centres. The overall prevalence estimate was 2.0 percent (CI95 1.4-2.6%). The variation around the summary estimate appeared more than was expected by chance alone, and this heterogeneity could be explained by geographic differences. In southern Europe, the prevalence was 3.0 percent (CI95 2.3 to 3.7%), nearly twice as high as the prevalence in northern Europe (1.7%, CI95 1.3 to 2.2%). The prothrombin variant appeared very rare in individuals from Asian and African descent.The 20210A prothrombin variant is a common abnormality, with a prevalence of carriership between one and four percent. It is more common in southern than in northern Europe. Since this distribution within Europe is very different to that of another prothrombotic mutation (factor V Leiden or factor V R506Q), founder effects are the most likely explanation for the geographical distribution of both mutations.
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16
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Pinotti M, Marchetti G, Baroni M, Cinotti F, Morfini M, Bernardi F. Reduced Activation of the Gla19Ala FX Variant via the Extrinsic Coagulation Pathway Results in Symptomatic CRMred FX Deficiency. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613193] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryWe characterized a symptomatic CRMred factor X (FX) deficiency produced by the Glu19Ala mutation in the γ-carboxyglutamic-rich domain. FX activity levels in plasma were markedly reduced in prothrombin time assays (< 1-5%), whereas in activated partial thromboplastin assays (16%) and in RVV assays (17%) the reduction in activity mirrored that in antigen levels (17%). Activation of recombinant 19Ala-FX by factor IXa/factor VIIIa or RVV, and the activity in thrombin generation assays, were comparable to those of wild-type FX. Differently, complete activation of recombinant 19AlaFX required a factor VIIa/TF concentration 30-fold higher than that of wild-type FX. The recombinant FVIIa significantly reduced PT values in 19Ala-FX reconstituted plasma, thus suggesting an alternative approach for treatment of FX deficiencies characterized by defective FX activation.The study of this FX deficiency provides an “in vivo” and “in vitro” model for the investigation of Gla domain interactions.
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17
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Ponziani V, Gennari M, Pizza F, Balsamo A, Bernardi F, Plazzi G. Growing Up with Type 1 Narcolepsy: Its Anthropometric and Endocrine Features. J Clin Sleep Med 2016; 12:1649-1657. [PMID: 27707443 DOI: 10.5664/jcsm.6352] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 06/20/2016] [Accepted: 07/31/2016] [Indexed: 12/22/2022]
Abstract
STUDY OBJECTIVES To evaluate the effect of type 1 narcolepsy (NT1) on anthropometric and endocrine features in childhood/adolescence, focusing on patterns and correlates of weight, pubertal development, and growth in treated and untreated patients. METHODS We collected anthropometric (height, weight, body mass index (BMI) z-scores), pubertal, metabolic, and endocrine data from 72 NT1 patients at diagnosis and all available premorbid anthropometric parameters of patients from their pediatric files (n = 30). New measurements at 1-y reassessment in patients undergoing different treatments were compared with baseline data. RESULTS We detected a high prevalence of overweight (29.2%), obesity (25%), metabolic syndrome (18.8%), and precocious puberty (16.1%), but no signs of linear growth alterations at diagnosis. According to anthropometric records, weight gain started soon after NT1 onset. At 1-y follow-up reassessment, sodium oxybate treatment was associated with a significant BMI z-score reduction (-1.29 ± 0.30, p < 0.0005) after adjusting for baseline age, sex, sleepiness, and BMI. CONCLUSIONS NT1 onset in children/adolescents is associated with rapid weight gain up to overweight/obesity and precocious puberty without affecting growth. In our study, sodium oxybate treatment resulted in a significant weight reduction in NT1 overweight/obese patients at 1-y follow-up.
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Affiliation(s)
- Virginia Ponziani
- Pediatric Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Monia Gennari
- Pediatric Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Fabio Pizza
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Italy.,IRCCS Institute of Neurological Sciences, Bellaria Hospital, Bologna, Italy
| | - Antonio Balsamo
- Pediatric Endocrinology Unit, Center for Rare Endocrine Diseases, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Filippo Bernardi
- Pediatric Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Giuseppe Plazzi
- Department of Biomedical and NeuroMotor Sciences, University of Bologna, Italy.,IRCCS Institute of Neurological Sciences, Bellaria Hospital, Bologna, Italy
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18
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Aminian M, Bernardi F, Camassa R, Harris DM, McLaughlin RM. How boundaries shape chemical delivery in microfluidics. Science 2016; 354:1252-1256. [DOI: 10.1126/science.aag0532] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/22/2016] [Accepted: 10/20/2016] [Indexed: 11/02/2022]
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19
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Chiappini E, Lo Vecchio A, Garazzino S, Marseglia GL, Bernardi F, Castagnola E, Tomà P, Cirillo D, Russo C, Gabiano C, Ciofi D, Losurdo G, Bocchino M, Tortoli E, Tadolini M, Villani A, Guarino A, Esposito S. Recommendations for the diagnosis of pediatric tuberculosis. Eur J Clin Microbiol Infect Dis 2016; 35:1-18. [PMID: 26476550 DOI: 10.1007/s10096-015-2507-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 10/07/2015] [Indexed: 01/10/2023]
Abstract
Tuberculosis (TB) is still the world's second most frequent cause of death due to infectious diseases after HIV infection, and this has aroused greater interest in identifying and managing exposed subjects, whether they are simply infected or have developed one of the clinical variants of the disease. Unfortunately, not even the latest laboratory techniques are always successful in identifying affected children because they are more likely to have negative cultures and tuberculin skin test results, equivocal chest X-ray findings, and atypical clinical manifestations than adults. Furthermore, they are at greater risk of progressing from infection to active disease, particularly if they are very young. Consequently, pediatricians have to use different diagnostic strategies that specifically address the needs of children. This document describes the recommendations of a group of scientific societies concerning the signs and symptoms suggesting pediatric TB, and the diagnostic approach towards children with suspected disease.
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20
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Branchini A, Ferrarese M, Lombardi S, Mari R, Bernardi F, Pinotti M. Differential functional readthrough over homozygous nonsense mutations contributes to the bleeding phenotype in coagulation factor VII deficiency. J Thromb Haemost 2016; 14:1994-2000. [PMID: 27513915 DOI: 10.1111/jth.13443] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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: 05/19/2016] [Indexed: 11/29/2022]
Abstract
Essentials Potentially null homozygous Factor(F)7 nonsense mutations are associated to variable bleeding symptoms. Readthrough of p.Ser112X (life-threatening) and p.Cys132X (moderate) stop codons was investigated. Readthrough-mediated insertion of wild-type or tolerated residues produce functional proteins. Functional readthrough over homozygous F7 nonsense mutations contributes to the bleeding phenotype. SUMMARY Background Whereas the rare homozygous nonsense mutations causing factor (F)VII deficiency may predict null conditions that are almost completely incompatible with life, they are associated with appreciable differences in hemorrhagic symptoms. The misrecognition of premature stop codons (readthrough) may account for variable levels of functional full-length proteins. Objectives To experimentally evaluate the basal and drug-induced levels of FVII resulting from the homozygous p.Cys132X and p.Ser112X nonsense mutations that are associated with moderate (132X) or life-threatening (112X) symptoms, and that are predicted to undergo readthrough with (132X) or without (112X) production of wild-type FVII. Methods We transiently expressed recombinant FVII (rFVII) nonsense and missense variants in human embryonic kidney 293 cells, and evaluated secreted FVII protein and functional levels by ELISA, activated FX generation, and coagulation assays. Results The levels of functional FVII produced by p.Cys132X and p.Ser112X mutants (rFVII-132X, 1.1% ± 0.2% of wild-type rFVII; rFVII-112X, 0.5% ± 0.1% of wild-type rFVII) were compatible with the occurrence of spontaneous readthrough, which was magnified by the addition of G418 - up to 12% of the wild-type value for the rFVII-132X nonsense variant. The predicted missense variants arising from readthrough abolished (rFVII-132Trp/Arg) or reduced (rFVII-112Trp/Cys/Arg, 22-45% of wild-type levels) secretion and function. These data suggest that the appreciable rescue of p.Cys132X function was driven by reinsertion of the wild-type residue, whereas the minimal p.Ser112X function was explained by missense changes permitting FVII secretion and function. Conclusions The extent of functional readthrough might explain differences in the bleeding phenotype of patients homozygous for F7 nonsense mutations, and prevent null conditions even for the most readthrough-unfavorable mutations.
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Affiliation(s)
- A Branchini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy.
- LTTA Center, University of Ferrara, Ferrara, Italy.
| | - M Ferrarese
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - S Lombardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - R Mari
- Department of Medical Sciences, Center for Hemostasis and Thrombosis, Hematology Section, University of Ferrara, Ferrara, Italy
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Center, University of Ferrara, Ferrara, Italy
| | - M Pinotti
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Center, University of Ferrara, Ferrara, Italy
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21
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Iorio A, Barbara AM, Bernardi F, Lillicrap D, Makris M, Peyvandi F, Rosendaal F. Recommendations for authors of manuscripts reporting inhibitor cases developed in previously treated patients with hemophilia: communication from the SSC of the ISTH. J Thromb Haemost 2016; 14:1668-72. [PMID: 27496160 DOI: 10.1111/jth.13382] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 03/01/2016] [Indexed: 11/30/2022]
Abstract
Aim The scope of this recommendation is to provide guidance for reporting of inhibitor cases in previously treated patients (PTPs) with hemophilia A. This guidance is intended to improve transparency and completeness of reporting of observed events; it does not cover planning, executing or analyzing original studies aimed at the assessment of inhibitor rates. Recommendation We recommend that for each case of inhibitor development reported in a published paper, a paragraph or a table is included in the main publication reporting as a minimum the underlined data fields in Table . We recommend transparent reporting when any of the suggested information is not available. We recommend that particular care is used in reporting the timeline of events by clearly identifying a reference time-point. We suggest that journals in the field adopt this guidance as instructions for the authors and as a guide for reviewers. Conclusion Development of inhibitors in PTPs is a very rare event. Standardized reporting of inhibitor characteristics will contribute to generating a body of evidence otherwise not available. Case by case reporting of the recommended data elements may shed light on the natural history and risk factors of inhibitor development in PTPs and be useful for tailoring care in similar future cases.
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Affiliation(s)
- A Iorio
- Department of Medicine, McMaster University, Hamilton, ON, Canada
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | - A M Barbara
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | - F Bernardi
- Department of Biochemistry and Molecular Biology, University of Ferrara, Ferrara, Italy
| | - D Lillicrap
- Pathology, Queens University, Kingston, ON, Canada
| | - M Makris
- Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK
| | - F Peyvandi
- A. Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation Università degli Studi di Milano, Milan, Italy
| | - F Rosendaal
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, the Netherlands
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22
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Affiliation(s)
- F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
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23
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Martinelli N, Girelli D, Baroni M, Guarini P, Sandri M, Lunghi B, Tosi F, Branchini A, Sartori F, Woodhams B, Bernardi F, Olivieri O. Activated factor VII-antithrombin complex predicts mortality in patients with stable coronary artery disease: a cohort study. J Thromb Haemost 2016; 14:655-66. [PMID: 27061056 DOI: 10.1111/jth.13274] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 08/10/2015] [Accepted: 01/12/2016] [Indexed: 01/06/2023]
Abstract
BACKGROUND Plasma concentration of activated factor VII (FVIIa)-antithrombin (AT) complex has been proposed as an indicator of intravascular exposure of tissue factor. OBJECTIVES The aims of this observational study were to evaluate (i) FVIIa-AT plasma concentration in subjects with or without coronary artery disease (CAD) and (ii) its association with mortality in a prospective cohort of patients with CAD. METHODS FVIIa-AT levels were measured by elisa in 686 subjects with (n = 546) or without (n = 140) angiographically proven CAD. Subjects with acute coronary syndromes and those taking anticoagulant drugs at the time of enrollment were excluded. CAD patients were followed for total and cardiovascular mortality. RESULTS There was no difference in FVIIa-AT levels between CAD (84.8 with 95% confidence interval [CI] 80.6-88.2 pmol L(-1) ) and CAD-free subjects (83.9 with 95% CI 76.7-92.8 pmol L(-1) ). Within the CAD population, during a 64-month median follow-up, patients with FVIIa-AT levels higher than the median value at baseline (≥ 79 pmol L(-1) ) had a two-fold greater risk of both total and cardiovascular mortality. Results were confirmed after adjustment for sex, age, the other predictors of mortality (hazard ratio for total mortality: 2.05 with 95% CI 1.22-3.45, hazard ratio for cardiovascular mortality 1.94 with 95% CI 1.01-3.73, with a slight improvement of C-statistic over traditional risk factors), FVIIa levels, drug therapy at discharge, and even patients using all the usual medications for CAD treatment. High FVIIa-AT levels also correlated with increased thrombin generation. CONCLUSIONS This preliminary study suggests that plasma concentration of FVIIa-AT is a thrombophilic marker of total and cardiovascular mortality risk in patients with clinically stable CAD.
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Affiliation(s)
- N Martinelli
- Department of Medicine, University of Verona, Verona, Italy
| | - D Girelli
- Department of Medicine, University of Verona, Verona, Italy
| | - M Baroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - P Guarini
- Department of Medicine, University of Verona, Verona, Italy
| | - M Sandri
- Department of Medicine, University of Verona, Verona, Italy
| | - B Lunghi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - F Tosi
- Department of Medicine, University of Verona, Verona, Italy
| | - A Branchini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - F Sartori
- Department of Medicine, University of Verona, Verona, Italy
| | | | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - O Olivieri
- Department of Medicine, University of Verona, Verona, Italy
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24
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Branchini A, Baroni M, Burini F, Puzzo F, Nicolosi F, Mari R, Gemmati D, Bernardi F, Pinotti M. The carboxyl-terminal region is NOT essential for secreted and functional levels of coagulation factor X. J Thromb Haemost 2015; 13:1468-74. [PMID: 26083275 DOI: 10.1111/jth.13034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 05/04/2015] [Accepted: 06/10/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND The homologous coagulation factor X (FX), VII (FVII), IX (FIX) and protein C (PC) display striking differences in the carboxyl-terminus, with that of FX being the most extended. This region is essential for FVII, FIX and PC secretion. OBJECTIVES To provide experimental evidence for the role of the FX carboxyl-terminus. METHODS Recombinant FX (rFX) variants were expressed in multiple eukaryotic cell systems. Protein and activity levels were evaluated by ELISA, coagulant and amidolytic assays. RESULTS AND DISCUSSION Expression of a panel of progressively truncated rFX variants in HEK293 cells revealed that the deletion of up to 21 residues in the carboxyl-terminus did not significantly affect secreted protein levels, as confirmed in HepG2 and BHK21 cells. In contrast, chimeric rFX-FVII variants with swapped terminal residues showed severely reduced levels. The truncated rFX variants revealed normal amidolytic activity, suggesting an intact active site. Intriguingly, these variants, which included that resembling the activated FXβ form once cleaved, also displayed remarkable or normal pro-coagulant capacity in PT- and aPTT-based assays. This supports the hypothesis that subjects with nonsense mutations in the FX carboxyl-terminus, so far never identified, would be asymptomatic. CONCLUSIONS For the first time we demonstrate that the FX carboxyl-terminal region downstream of residue K467 is not essential for secretion and provides a modest contribution to pro-coagulant properties. These findings, which might suggest an involvement of the carboxyl-terminal region in the divergence of the homologous FX, FVII, FIX and PC, help to interpret the mutational pattern of FX deficiency.
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Affiliation(s)
- A Branchini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Centre, University of Ferrara, Ferrara, Italy
| | - M Baroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Centre, University of Ferrara, Ferrara, Italy
| | - F Burini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - F Puzzo
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - F Nicolosi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - R Mari
- Centre for Haemostasis and Thrombosis, Haematology Section, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - D Gemmati
- Centre for Haemostasis and Thrombosis, Haematology Section, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Centre, University of Ferrara, Ferrara, Italy
| | - M Pinotti
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
- LTTA Centre, University of Ferrara, Ferrara, Italy
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Marchisio P, Bianchini S, Villani A, Verri G, Bernardi F, Porta A, Biban P, Caimmi S, Iughetti L, Krzysztofiak A, Garazzino S, Romanin B, Salvini F, Lancella L, Landini S, Galeone C, Esposito S, Principi N. Diagnosis and management of acute mastoiditis in a cohort of Italian children. Expert Rev Anti Infect Ther 2015; 12:1541-8. [PMID: 25382701 DOI: 10.1586/14787210.2014.982093] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 11/08/2022]
Abstract
OBJECTIVE The Italian Society for Pediatric Infectious Diseases created a registry to determine the management of pediatric acute mastoiditis (AM) in Italy. METHODS A cross-sectional survey of paediatricians was conducted to evaluate hospitalization due to AM in Italian pediatric wards between 1 January 2002, and 31 December 2013. RESULTS A total of 913 children (561 males, 61.4%) were included in this study. The annual number of AM cases significantly increased during the study period (30 in 2002 and 98 in 2013) but only among older children (≥ 4 years old; p = 0.02). AM complications occurred in 69 (7.6%) of the children and sequelae were observed in 13 (1.4%) patients. CONCLUSION The annual number of pediatric AM cases admitted to Italian pediatric wards increased in the past few years; this increase was strictly age-related. The risk of severe AM complications appeared relatively low, and most AM cases could be treated conservatively.
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Affiliation(s)
- Paola Marchisio
- Department of Pathophysiology and Transplantation, Pediatric Highly Intensive Care Unit, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122 Milan, Italy
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Baroni M, Pavani G, Pinotti M, Branchini A, Bernardi F, Camire RM. Asymmetric processing of mutant factor X Arg386Cys reveals differences between intrinsic and extrinsic pathway activation. Biochim Biophys Acta 2015; 1854:1351-6. [PMID: 26012870 DOI: 10.1016/j.bbapap.2015.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/30/2015] [Accepted: 05/18/2015] [Indexed: 01/30/2023]
Abstract
Alterations in coagulation factor X (FX) activation, mediated by the extrinsic VIIa/tissue factor (FVIIa/TF) or the intrinsic factor IXa/factor VIIIa (FIXa/FVIIIa) complexes, can result in hemorrhagic/prothrombotic tendencies. However, the molecular determinants involved in substrate recognition by these enzymes are poorly defined. Here, we investigated the role of arginine 386 (chymotrypsin numbering c202), a surface-exposed residue on the FX catalytic domain. The naturally occurring FX386Cys mutant and FX386Ala variant were characterized. Despite the unpaired cysteine, recombinant (r)FX386Cys was efficiently secreted (88.6±21.3% of rFXwt) and possessed normal clearance in mice. rFX386Cys was also normally activated by FVIIa/TF and displayed intact amidolytic activity. In contrast, rFX386Cys activation by the FIXa/FVIIIa complex was 4.5-fold reduced, which was driven by a decrease in the kcat (1.6∗10(-4) s(-1) vs 5.8∗10(-4) s(-1), rFXwt). The virtually unaltered Km (70.6 nM vs 55.6nM, rFXwt) suggested no major alterations in the FX substrate exosite. Functional assays in plasma supplemented with rFX386Cys indicated a remarkable reduction in the thrombin generation rate and thus in coagulation efficiency. Consistently, the rFX386Ala variant displayed similar biochemical features suggesting that global changes at position 386 impact the intrinsic pathway activation. These data indicate that the FXArg386 is involved in FIXa/FVIIIa-mediated FX activation and help in elucidating the bleeding tendency associated with the FX386Cys in a rare FX deficiency case. Taking advantage of the unpaired cysteine, the rFX386Cys mutant may be efficiently targeted by thiol-specific ligands and represent a valuable tool to study FX structure-function relationships both in vitro and in vivo.
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Affiliation(s)
- M Baroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy.
| | - G Pavani
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy; The Children's Hospital of Philadelphia, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA; The Center for Cell and Molecular Therapeutics, and Division of Hematology, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA; Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - M Pinotti
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy
| | - A Branchini
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy
| | - F Bernardi
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy
| | - R M Camire
- The Children's Hospital of Philadelphia, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA; The Center for Cell and Molecular Therapeutics, and Division of Hematology, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA; Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
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Tassinari D, Bergamaschi R, Corsini I, Landini S, Romanin B, Ballarini E, De Ponti F, Carfagnini F, Toni F, Bernardi F. Posterior reversible encephalopathy syndrome associated with licorice consumption: a case report in a 10-year-old boy. Pediatr Neurol 2015; 52:457-9. [PMID: 25680999 DOI: 10.1016/j.pediatrneurol.2014.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/03/2014] [Accepted: 12/03/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Posterior reversible encephalopathy syndrome is characterized by a combination of clinical-radiological findings and pathophysiologically by localized brain vasogenic edema. Many clinical illnesses may trigger the onset of posterior reversible encephalopathy syndrome and hypertension is present in about 80% of patients. METHODS We describe a child with high consumption of licorice toffees who developed systemic hypertension followed by posterior reversible encephalopathy syndrome. RESULTS This boy was hospitalized following a cluster of generalized tonic-clonic seizures. Monitoring his clinical parameters, we detected constant high blood pressure and a brain magnetic resonance scan showed a localized vasogenic edema; these symptoms suggested posterior reversible encephalopathy syndrome. He had been eating licorice toffees for a period of 4 months, consuming an estimated 72 mg of glycyrrhizic acid per day; this led to our assumption of the reason for his hypertension. CONCLUSION There are several reported examples of posterior reversible encephalopathy syndrome-induced licorice hypertension in adults, but none related to children. Our report examines a possible link between licorice consumption and hypertension/posterior reversible encephalopathy syndrome in children.
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Affiliation(s)
- Davide Tassinari
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy.
| | - Rosalba Bergamaschi
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
| | - Ilaria Corsini
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
| | - Susanna Landini
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
| | - Benedetta Romanin
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
| | - Elisa Ballarini
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
| | - Fabrizio De Ponti
- Department of Medical and Surgical Sciences, Pharmacology Unit, University of Bologna, Italy
| | - Filomena Carfagnini
- Department of Pediatric Radiology, S. Orsola-Malpighi Hospital of Bologna, Italy
| | - Francesco Toni
- IRCCS Institute of Neurological Sciences, Bologna, Italy
| | - Filippo Bernardi
- Department of Pediatric Emergency, S. Orsola-Malpighi Hospital, University of Bologna, Italy
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Lucatello L, Cagnardi P, Capolongo F, Ferraresi C, Bernardi F, Montesissa C. Development and validation of an LC–MS/MS/MS method for the quantification of fluoroquinolones in several matrices from treated turkeys. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Karel J, Bernardi F, Wang C, Stinshoff R, Born NO, Ouardi S, Burkhardt U, Fecher GH, Felser C. Evidence for localized moment picture in Mn-based Heusler compounds. Phys Chem Chem Phys 2015; 17:31707-14. [DOI: 10.1039/c5cp04944j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Mn magnetic moment in positions with octahedral symmetry is localized and comprised completely by itinerant electrons.
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Affiliation(s)
- J. Karel
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - F. Bernardi
- Departamento de Fisica
- Instituto de Fisica
- Universidade federal do Rio Grande do Sul (UFRGS)
- Porto Alegre
- Brasil
| | - C. Wang
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - R. Stinshoff
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - N.-O. Born
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - S. Ouardi
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - U. Burkhardt
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - G. H. Fecher
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
| | - C. Felser
- Max-Planck-Institut für Chemische Physik fester Stoffe
- Dresden
- Germany
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Olivieri O, Martinelli N, Baroni M, Branchini A, Girelli D, Friso S, Pizzolo F, Bernardi F. C0401: Factor II Activity is Similarly Increased in Patients with Elevated Apolipoprotein CIII and in Carriers of the Factor II 20210A Allele. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50267-8] [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: 10/25/2022]
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31
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Martinelli N, Girelli D, Baroni M, Guarini P, Tosi F, Lunghi B, Woodhams B, Bernardi F, Olivieri O. C0398: Activated Factor VII-Antithrombin Complex Plasma Concentration is a Predictor of Total and Cardiovascular Mortality in Patients with Coronary Artery Disease and its Prognostic Significance is Improved by Using Factor VII Genotype-Specific Threshold Levels. Thromb Res 2014. [DOI: 10.1016/s0049-3848(14)50074-6] [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: 10/25/2022]
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Morfini M, Batorova A, Mariani G, Auerswald G, Bernardi F, Di Minno G, Dolce A, Fede C, Giansily-Blaizot M, Ingerslev J, Martinowitz U, Napolitano M, Pinotti M, Schved JF. Pharmacokinetic properties of recombinant FVIIa in inherited FVII deficiency account for a large volume of distribution at steady state and a prolonged pharmacodynamic effect. Thromb Haemost 2014; 112:424-5. [PMID: 24763923 DOI: 10.1160/th13-12-1045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 03/11/2014] [Indexed: 12/17/2022]
Affiliation(s)
- M Morfini
- Massimo Morfini, Agency for Hemophilia and Regional Reference Center for Inherited Bleeding Disorders, Azienda Ospedalieriero, Universitaria Careggi, Florence, Italy, Tel.: +39 055 7947587, Fax: +39 055 7947794, E-mail:
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Balestra D, Faella A, Margaritis P, Cavallari N, Pagani F, Bernardi F, Arruda VR, Pinotti M. An engineered U1 small nuclear RNA rescues splicing defective coagulation F7 gene expression in mice. J Thromb Haemost 2014; 12:177-85. [PMID: 24738135 PMCID: PMC4238797 DOI: 10.1111/jth.12471] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND The ability of the spliceosomal small nuclear RNA U1 (U1snRNA) to rescue pre-mRNA splicing impaired by mutations makes it an attractive therapeutic molecule. Coagulation factor deficiencies due to splicing mutations are relatively frequent and could therefore benefit from this strategy. However, the effects of U1snRNAs in vivo remain unknown. OBJECTIVES To assess the rescue of the F7 c.859+5G>A splicing mutation (FVII+5A), causing severe human factor VII (hFVII) deficiency, by the modified U1snRNA+5a (U1+5a) in a murine model. METHODS Mice expressing the human F7 c.859+5G>A mutant were generated following liver-directed expression by plasmid or recombinant adeno-associated viral (AAV) vector administration. The rescue of the splice-site defective pre-mRNA by U1+5a was monitored in liver and plasma through hFVII-specific assays. RESULTS Injection of plasmids encoding the U1+5a rescued plasma hFVII levels, which increased from undetectable to ~8.5% of those obtained with the wild-type hFVII plasmid control. To assess long-term effects, mice were injected with low and high doses of two AAV vectors encoding the FVII+5A splice site mutant as template to be corrected by U1+5a. This strategy resulted in hFVII plasma levels of 3.9 ± 0.8 or 23.3 ± 5.1 ng mL⁻¹ in a dose-dependent manner, corresponding in patients to circulating FVII levels of ~1-4.5% of normal. Moreover, in both experimental models, we also detected correctly spliced hFVII transcripts and hFVII-positive cells in liver cells. CONCLUSIONS Here we provide the first in vivo proof of-principle of the rescue of the expression of a splicing-defective F7 mutant by U1snRNAs, thus highlighting their therapeutic potential in coagulation disorders.
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Abstract
Mycoplasma pneumoniae, the major pathogen of primary atypical pneumonia, is reported as the most common infectious agent associated with Stevens-Johnson syndrome (SJS) in children. For that reason it is important to consider mycoplasma infection also in the absence of classical pulmonary symptoms. SJS is a rare and acute, self-limited disease, characterized by severe inflammation and necrosis of two or more mucous membranes. We report the case of a 12-year-old boy with a diagnosis of SJS induced by M. pneumoniae infection. The patient's SJS relapsed 8 months after discharge. When the condition is recurrent, it is important early on to identify the cause of a single episode to optimize care and therapeutic choices.
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Affiliation(s)
- Cinzia Campagna
- Department of Pediatrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
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Paranhos N, Silva E, Bernardi F, Mendes M, Junqueira D, Souza I, Albuquerque J, Alves J, Machado M. Estudo das agressões por cães, segundo tipo de interação entre cão e vítima, e das circunstâncias motivadoras dos acidentes, município de São Paulo, 2008 a 2009. ARQ BRAS MED VET ZOO 2013. [DOI: 10.1590/s0102-09352013000400014] [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: 11/22/2022] Open
Abstract
Caracterizaram-se as agressões por cães, o perfil das vítimas e dos agressores e as circunstâncias desses acidentes. Calculou-se a amostra aleatória a partir de 20 mil notificações/ano de agressões por cães e realizaram-se 594 entrevistas telefônicas. A maior frequência de agressões ocorreu no sexo masculino, faixa etária de cinco a 14 anos. Lesões leves representaram 80,4%. As profundas (19,1%) ocorreram por cães de porte médio seguidas pelos de grande porte. A maioria dos cães era macho adulto, porte médio. Dos entrevistados, 52,5% desconheciam a condição reprodutiva; 41,0% dos cães não eram esterilizados e 6,4% eram esterilizados. Cães sem raça definida (SRD) provocaram 48,4% dos acidentes, e 57,6% das agressões ocorreram em locais privados. Em 56,2% das agressões, as vítimas eram moradoras do imóvel ou pessoas conhecidas. Com animais não conhecidos a agressão mais frequente ocorreu na rua, 30,8%, e 67,5% dos donos permaneceram com os animais. As agressões foram resultantes da interação homem-cão e devem ser estudadas para se identificarem os possíveis comportamentos que desencadeiam a agressão pelo animal.
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Cazzato S, Ridolfi L, Bernardi F, Faldella G, Bertelli L. Lung function outcome at school age in very low birth weight children. Pediatr Pulmonol 2013; 48:830-7. [PMID: 23129340 DOI: 10.1002/ppul.22676] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 07/31/2012] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The aim of this study was to assess pulmonary function and its predictors in very low birth weight (birth weight ≤1,500 g) children (VLBWc) with or without bronchopulmonary dysplasia (BPD), born at gestational age ≤32 weeks at a single tertiary center during 1996-1999, after the introduction of surfactant therapy. METHODS Of the 120 surviving VLBW children, 48 (40%) VLBWc (22 with prior-BPD) at age 8.5 ± 1.0 years and 46 age-matched controls (8.8 ± 1.4 years) born at term, underwent lung function study. RESULTS Adjusted values (z-score) of forced vital capacity (z-FVC), forced expiratory volume in 1 sec (z-FEV1), forced expiratory flow 25-75% (z-FEF25-75), carbon monoxide lung diffusion capacity (z-DLCO), and DLCO/alveolar volume (z-DLCO/VA) were significantly lower than controls (mean difference, 95% CI: -1.35, -1.81 to -0.90, P < 0.001; -1.31, -1.73 to -0.90, P < 0.001; -0.87, -1.29 to -0.46, P < 0.001; -0.98, -1.72 to -0.23, P < 0.001; -0.70, -1.22 to -0.18, P < 0.05; respectively). Residual volume (z-RV) and RV/total lung capacity (RV/TLC) ratio (%) were significantly higher in VLBWc than controls (mean difference, 95% CI: 1.06, 0.44 to 1.68, P < 0.001; 9.54%, 5.73 to 13.3%, P < 0.001; respectively). No differences were found in lung function between VLBWc (no-BPD vs. BPD) with the exception of a significant higher RV/TLC ratio in the BPD-subgroup (mean difference, 95% CI: 7.0%, 0.4 to 13%, P = 0.03). Lung function abnormalities were found in 30 (63%) VLBWc with evidence of airway obstruction and diffusing capacity impairment. A weak relationship was observed between gestational age with z-FVC (r = 0.30, P = 0.04), birth weight with z-FEV1 (r = 0.30, P = 0.04) and RV/TLC ratio (r = -0.49, P = 0.001). The duration of oxygen treatment correlated negatively with the z-DLCO/Va (r = -0.5, P = 0.02). No differences were found in FeNO levels between VLBWc and controls. CONCLUSION VLBWc at school age showed lung function abnormalities characterized by airway obstruction, hyperinflation, and diffusion impairment. Neonatal lung damage together with preterm birth may play a role in worsening the functional respiratory outcome.
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Affiliation(s)
- Salvatore Cazzato
- Department of Pediatrics, University of Bologna, S. Orsola-Malpighi Hospital Bologna, Italy.
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Poli F, Pizza F, Mignot E, Ferri R, Pagotto U, Taheri S, Finotti E, Bernardi F, Pirazzoli P, Cicognani A, Balsamo A, Nobili L, Bruni O, Plazzi G. High prevalence of precocious puberty and obesity in childhood narcolepsy with cataplexy. Sleep 2013; 36:175-81. [PMID: 23372264 DOI: 10.5665/sleep.2366] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
STUDY OBJECTIVES We analyzed the potential predictive factors for precocious puberty, observed in some cases of childhood narcolepsy with cataplexy (NC) and for obesity, a much more common feature of NC, through a systematic assessment of pubertal staging, body mass index (BMI), and metabolic/endocrine biochemical analyses. DESIGN Cross-sectional on consecutive recruitment. SETTING Hospital sleep center and pediatric unit. PATIENTS Forty-three children and adolescents with NC versus 52 age-matched obese children as controls. INTERVENTIONS N/A. MEASUREMENTS AND RESULTS Patients underwent clinical interview, polysomnographic recordings, cerebrospinal fluid hypocretin-1 measurement, and human leukocyte antigen typing. Height, weight, arterial blood pressure, and Tanner pubertal stage were evaluated. Plasma lipid and glucose profiles were analyzed. When an altered pubertal development was clinically suspected, plasma concentrations of hypothalamic-pituitary-gonadal axis hormones were determined. Children with NC showed a high prevalence of overweight/obesity (74%) and a higher occurrence of precocious puberty (17%) than obese controls (1.9%). Isolated signs of accelerated pubertal development (thelarche, pubic hair, advanced bone age) were also present (41%). Precocious puberty was significantly predicted by a younger age at first NC symptom onset but not by overweight/obesity or other factors. In addition, overweight/obesity was predicted by younger age at diagnosis; additional predictors were found for overweight/obesity (short disease duration, younger age at weight gain and lower high-density lipoprotein cholesterol), which did not include precocious puberty. NC symptoms, pubertal signs appearance, and body weight gain developed in close temporal sequence. CONCLUSIONS NC occurring during prepubertal age is frequently accompanied by precocious puberty and overweight/obesity, suggesting an extended hypothalamic dysfunction. The severity of these comorbidities and the potential related risks require a multidiagnostic approach and a tailored therapeutic management.
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Affiliation(s)
- Francesca Poli
- Department of Neurological Sciences, University of Bologna - IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
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Gomes A, Silva M, Bernardi F, Sakai T, Itou T, Ito F. Molecular epidemiology of animal rabies in the semiarid region of Paraíba, Northeastern Brazil. Arq Inst Biol 2012. [DOI: 10.1590/s1808-16572012000400020] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the semiarid of the state of Paraíba, the anti-rabies vaccination is not common, most of the local inhabitants who deal with the animals do not know the incidence of the disease in the region. In this study, samples of foxes (Pseudalopex vetulus), insectivorous bats (Molossus molossus), raccoons (Procyon cancrivorous) and domestic animals brains were submitted to the diagnosis of rabies, by using the direct fluorescent antibody technique (d-FAT) and mouse inoculation test (MIT). Of the 581 examined materials, 50 (8.60 %) were positive for d-FAT and 47 (8.09 %) for MIT. From the positive samples for rabies, RNAs were extracted and transformed to cDNA, at the Laboratory of Rabies/Faculdade de Medicina Veterinária e Zootecnia/USP, SP. The phylogenetic characterization of the N gene was performed at the Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Universidade Nihon, Faculdade de Ciências Bioresource, Fujisawa, Kanagawa, Japão. Based on the results of genotyping and phylogenetic analyzes, it is concluded that the epidemiology of rabies is complex in the semiarid of Paraíba, with different viral variants being maintained in domestic dogs, foxes, insectivorous bats and vampire bats. All the isolates examined belong to the genotype I of the genus Lyssavirus and it is possible to state that in the region, foxes are important sylvatic reservoirs of the rabies virus.
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Affiliation(s)
| | | | - F. Bernardi
- Centro de Vigilância Sanitária e Controle de Zoonoses Tereza Rodrigues de Camargo, Brasil
| | | | | | - F.H. Ito
- Universidade de São Paulo, Brasil
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Canatto B, Silva E, Bernardi F, Mendes M, Paranhos N, Dias R. Caracterização demográfica das populações de cães e gatos supervisionados do município de São Paulo. ARQ BRAS MED VET ZOO 2012. [DOI: 10.1590/s0102-09352012000600017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A caracterização das populações canina e felina domiciliadas do município de São Paulo (SP) foi realizada utilizando-se amostragem complexa com seleção aleatória em dois estágios. Em cada distrito administrativo, foram visitados seis setores censitários e 20 domicílios em cada setor sorteado, de setembro de 2006 a setembro de 2009, totalizando 11.272 entrevistas. A razão homem:cão foi de 4,34, e a razão homem:gato de 19,33. A população canina foi estimada em 2.507.401, e a felina em 562.965. A população canina era composta por 52,7% de machos, e a felina por 45,1%. A proporção de fêmeas esterilizadas, 23,4% das cadelas e 46,1% das gatas, é maior que a de machos, 11,4% dos cães e 31,5% dos gatos. A idade média dos cães era de 4,99 anos e a dos gatos de 3,53 anos. A proporção de cães com restrição de acesso à rua, 64,4%, foi maior que a de gatos, 42,5%. A média de animais/domicílio foi estimada em 1,60 para cães e 1,69 para gatos. A guarda destes animais está associada a fatores culturais, assim a caracterização da população de animais é base da estruturação adequada de programas de controle populacional e de zoonoses.
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Tassinari D, Santoro S, Bernardi F, Lima M. A mesenteric hernia complicated with a triple necrotic volvulus. BMJ Case Rep 2012; 2012:bcr-2012-006448. [PMID: 23008368 DOI: 10.1136/bcr-2012-006448] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A 6-year-old girl was admitted to the paediatric emergency department with colicky abdominal pain. She had a significant medical history, with four previous admissions due to recurrent abdominal pain in the past year. On examination the abdomen was soft, there was no rebound tenderness and Rovsing's sign was negative. Her blood tests revealed a raised white cells count, although her C reactive protein was within the normal range. Abdominal x-ray revealed small bowel obstruction. During her assessment the patient rapidly deteriorated and seemed to go into shock. Her clinical state in addition to the radiological findings meant that she was taken to theatre for surgical exploration. This showed a triple volvulus with necrotic bowel loops that had herniated through a mesenteric defect. The necrotic bowel was subsequently resected.
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Affiliation(s)
- Davide Tassinari
- Paediatric Emergency Department, S.Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy.
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Lapecorella M, Napolitano M, Lucchesi A, Pisani F, Clemente K, Rizza V, Famulari A, Aloisio L, Bernardi F, Pinotti M, Ferraresi P, Di Cocco P. Management of kidney transplantation in a factor VII-deficient patient: case report. Transplant Proc 2012; 44:2033-5. [PMID: 22974900 DOI: 10.1016/j.transproceed.2012.07.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Transplantation in patients with congenital bleeding disorders is a challenge requiring an integrated approach of various specialists. Renal transplantation, the most frequent type of solid organ transplantation, is rarely performed in individuals with congenital hemorrhagic disorders. We performed a renal transplantation in a 53-year-old man with end-stage renal disease and congenital coagulation factor VII deficiency, a rare bleeding disorder with a peculiar clinical picture requiring replacement therapy in surgical interventions. Perioperative bleeding was successfully prevented by administration of recombinant activated factor VII. Treatment schedule, administration rate, and long-term follow-up are reported in detail. Our report confirmed the feasibility and safety of recombinant activated factor VII in major surgical procedures like solid organ transplantations. Success requires evaluation of doses and therapeutic schedules as well as a multidisciplinary approach.
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Affiliation(s)
- M Lapecorella
- ASL BAT, Haematology Unit, P.O. San Nicola Pellegrino, Trani, Italy.
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Abstract
Substitutive therapy has significantly ameliorated the quality of life of patients with coagulation factor deficiencies. However, there are some limitations that support research towards alternative therapeutic approaches. Here we focus on the rescue of coagulation factor biosynthesis by targeting the RNA processing and translation, which would permit restoration of the altered gene expression while maintaining the gene regulation in the physiological tissues. The essential prerequisite of the three reported RNA-based correction approaches (i-iii), which rely on mutation types and are applicable even to large size mRNAs, is the presence in cells of the precursor (pre-mRNA) or mature mRNA forms. (i) In the F7 gene, modification of the small nuclear RNA U1 (U1 snRNA), the key component of the spliceosomal U1 ribonucleoprotein, re-directs correct usage of a mutated exon-intron junction, triggering synthesis of correct mRNA and secretion of functional factor (F)VII. (ii) Spliceosome-mediated RNA trans-splicing (SMaRT) between mutated and engineered pre-mRNAs produces normal FVIII mRNA and secretion of functional protein. (iii) Aminoglycoside drugs induce ribosome readthrough and suppress premature translation termination caused by nonsense mutations in FVII, VIII and IX. The rescued expression levels ranged from very low (aminoglycosides) to moderate (U1 snRNA and SMaRT), which could result in amelioration of the disease phenotypes. These findings prompt further studies aimed at demonstrating the clinical translatability of RNA-based strategies, which might open new avenues in the treatment of coagulation factor deficiencies.
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Affiliation(s)
- M Pinotti
- Department of Biochemistry and Molecular Biology, University of Ferrara, Trieste, Italy
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Campo G, Ferraresi P, Marchesini J, Bernardi F, Valgimigli M. Relationship between paraoxonase Q192R gene polymorphism and on-clopidogrel platelet reactivity over time in patients treated with percutaneous coronary intervention. J Thromb Haemost 2011; 9:2106-8. [PMID: 21819538 DOI: 10.1111/j.1538-7836.2011.04457.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Zanasi A, Lanata L, Danieli GD, Bernardi F, Cazzato S, Blasio FD. Cough Incidence, Impact on Sleep, and Antitussive Treatment in the Pediatric Population. Chest 2011. [DOI: 10.1378/chest.1118177] [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: 11/01/2022] Open
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di Palmo E, Cazzato S, Tursini S, Salfi NCM, Mazzotta A, Di Silverio Carulli C, Lima M, Bergamaschi R, Bernardi F, Cicognani A. A rare association of inlet patch with laryngospasm: a report of two children and literature review. Pediatr Pulmonol 2011; 46:934-8. [PMID: 21462362 DOI: 10.1002/ppul.21457] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 01/15/2011] [Accepted: 01/21/2011] [Indexed: 12/13/2022]
Abstract
The inlet patch (IP) is an area of heterotopic gastric mucosa in the cervical esophagus commonly seen during upper endoscopy. Although generally asymptomatic IP has been associated with esophageal and supraesophageal symptoms and, though rare, in adult with malignant transformation. We describe two cases of recurrent episodes of laryngospasm associated with IP. In both cases there was a good response to prolonged acid suppression therapy.
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Affiliation(s)
- E di Palmo
- Department of Pediatrics, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
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Soto F, Delbem Á, Pinheiro S, Morais Z, Gonçales A, Azevedo SD, Bernardi F, Almeida ID, Vasconcellos S. COMPARISON OF AGGLUTINATING AND GROWTH INHIBITION ANTIBODIES LEVELS IN SOWS IMMUNIZED WITH TWO EXPERIMENTAL INACTIVATED MONOVALENT VACCINES OF CANICOLA SEROVAR: WHOLE CULTURE WITH ALUMINUM HYDROXIDE AND LIPOPOLYSACCHARIDE SUBUNIT WITH LIPID A. Arq Inst Biol 2011. [DOI: 10.1590/1808-1657v78p1992011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT It was compared the antibody response of sows immunized with two experimental vaccines produced with L.interrogans, serovar Canicola, strain LO-4, isolated in Brazil.One of the vaccines was the usual bacterin (whole culture inactivated with phenol and adjuvanted with aluminum hydroxide -WC-AlOH3) and the other one was a subunit vaccine produced with a lipopolysaccharide (LPS) fraction extracted from the bacteria outer envelop and with the lipid A, also extracted from the leptospira wall as adjuvant (LPS-MPLA). Experiment was as follows: group 1 (n = 11), not immunized control, group 2, (n = 11): two immunization with 30 days interval of LPS-MPLA vaccine and group 3 (n = 11): two immunization with 30 days interval of WC-AlOH3 vaccine All three groups were simultaneously immunized, independently of pregnancy stage. Both agglutinin and neutralizing post vaccination antibodies levels were measured respectively by the microscopic sera agglutination with live antigens test (MAT) and the in vitro leptospira growth inhibition test (GIT). Sera collections were performed each 30 days during four months after the first vaccination. Non vaccinated control group animals presented no agglutinating antibodies against Canicola serovar during the whole experiment. At 32 and 68 post vaccination days the agglutinating antibodies levels of group 2 (LPS-MPLA) were significantly higher than the observed in group 3 (WC AlOH3), respectively, p = 0.013 and p = 0.031. The differences observed in the growth inhibition antibodies titers of the two vaccines tested were not significant (p > 0.05). Despite the peak of post-vaccination agglutinins have been registered at 68 days after first immunization, higher levels growth inhibition antibodies were detected at 30 days of first vaccination. Subunit vaccine presented the same immunogenic capacity for the production of neutralizing antibodies as the whole culture one.
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Affiliation(s)
- F.R.M. Soto
- Centro de Vigilância Sanitária e Controle de Zoonoses “Tereza Rodrigues de Camargo”, Brasil
| | | | | | | | | | | | - F Bernardi
- Centro de Vigilância Sanitária e Controle de Zoonoses “Tereza Rodrigues de Camargo”, Brasil
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Lunghi B, Redaelli R, Caimi TM, Corno AR, Bernardi F, Marchetti G. Novel phenotype and γ-glutamyl carboxylase mutations in combined deficiency of vitamin K-dependent coagulation factors. Haemophilia 2011; 17:822-4. [PMID: 21435120 DOI: 10.1111/j.1365-2516.2011.02524.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gobbi M, Caccianiga M, Cerabolini B, Bernardi F, Luzzaro A, Pierce S. Plant adaptive responses during primary succession are associated with functional adaptations in ground beetles on deglaciated terrain. COMMUNITY ECOL 2010. [DOI: 10.1556/comec.11.2010.2.11] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Martinelli N, Lunghi B, Girelli D, Pinotti M, Marchetti G, Bisi M, Manzato F, Corrocher R, Olivieri O, Bernardi F. W14 A COMMON POLYMORPHISM IN LDL-RECEPTOR GENE IS A PREDICTOR OF FACTOR VIII ACTIVITY AND IS ASSOCIATED WITH CORONARY ARTERY DISEASE. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70015-5] [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: 11/26/2022]
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Gatto MR, Bernardi F, Bandini L, Prati C. [Occupational exposure to blood and body fluids in a Department of Odontostomatologic Sciences: results of a ten-year surveillance study]. Med Lav 2010; 101:218-227. [PMID: 20812663] [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: 05/29/2023]
Abstract
BACKGROUND Evaluation of occupational exposures can assist with practice modifications, redesign of equipment, and targeted educational efforts. OBJECTIVES The aim of this analysis was to identify trends that will aid in the prediction and prevention of accidents. METHODS Our data were collected from 1999 to 2008 during a surveillance programme of occupational exposure to blood or other potentially infectious materials in a middle Dental School by using a standard coded protocol. RESULTS Altogether 51 exposures were reported. Of these, 45/51 (88%) were percutaneous and 6/51 (12%) were of the mucosa, involving a splash in the eye of dental care workers (DCW). Of these 22/51 (43%) occurred among dental students, 17/51 (33%) among DCWs attending master and doctorate courses, 11/51 (22%) among DCWs attending as tutors and visiting professors and 1/51 (2%) among staff. Regarding the circumstances of the exposures, 37/51 (73%) and 14/51 (27%) of the accidents occurred respectively during and after the use of a device; of latter, 1/14 (7%) was connected with instrument cleaning and with laboratory activity, 10/14 (71%) occurred when a DCW collided with a sharp object, and 2/14 (4%) happened during other activities. The instrument and the body part most likely to be involved were needles and fingers. The overall exposure rate was 5.15 +/- 0.72 standard error per 10,000 patient procedures. CONCLUSIONS Our results may serve as a benchmark that other Dental Schools could adopt to assess accident frequency.
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Affiliation(s)
- Maria Rosaria Gatto
- Dipartimento di Scienze Odontostomatologiche Alma Mater Studiorum Università di Bologna.
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