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Capuana F, Phinikaridou A, Stefania R, Padovan S, Lavin B, Lacerda S, Almouazen E, Chevalier Y, Heinrich-Balard L, Botnar RM, Aime S, Digilio G. Imaging of Dysfunctional Elastogenesis in Atherosclerosis Using an Improved Gadolinium-Based Tetrameric MRI Probe Targeted to Tropoelastin. J Med Chem 2021; 64:15250-15261. [PMID: 34661390 PMCID: PMC8558862 DOI: 10.1021/acs.jmedchem.1c01286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Dysfunctional elastin turnover plays a major role in the progression of atherosclerotic plaques. Failure of tropoelastin cross-linking into mature elastin leads to the accumulation of tropoelastin within the growing plaque, increasing its instability. Here we present Gd4-TESMA, an MRI contrast agent specifically designed for molecular imaging of tropoelastin within plaques. Gd4-TESMA is a tetrameric probe composed of a tropoelastin-binding peptide (the VVGS-peptide) conjugated with four Gd(III)-DOTA-monoamide chelates. It shows a relaxivity per molecule of 34.0 ± 0.8 mM-1 s-1 (20 MHz, 298 K, pH 7.2), a good binding affinity to tropoelastin (KD = 41 ± 12 μM), and a serum half-life longer than 2 h. Gd4-TESMA accumulates specifically in atherosclerotic plaques in the ApoE-/- murine model of plaque progression, with 2 h persistence of contrast enhancement. As compared to the monomeric counterpart (Gd-TESMA), the tetrameric Gd4-TESMA probe shows a clear advantage regarding both sensitivity and imaging time window, allowing for a better characterization of atherosclerotic plaques.
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Affiliation(s)
- Federico Capuana
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, Turin 10126, Italy
| | - Alkystis Phinikaridou
- School of Biomedical Engineering and Imaging Sciences, King's College London, Westminster Bridge Road, London SE1 7EH, United Kingdom
| | - Rachele Stefania
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, Turin 10126, Italy
| | - Sergio Padovan
- Institute for Biostructures and Bioimages (CNR) c/o Molecular Biotechnology Center, Via Nizza 52, Torino 10126, Italy
| | - Begoña Lavin
- School of Biomedical Engineering and Imaging Sciences, King's College London, Westminster Bridge Road, London SE1 7EH, United Kingdom.,Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University, Ciudad Universitaria s/n, Madrid 28040, Spain
| | - Sara Lacerda
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d'Orléans, Rue Charles Sadron, Orléans Cedex 2 45071, France
| | - Eyad Almouazen
- CNRS, LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, 43 boulevard du 11 novembre 1918, Villeurbanne 69622, France
| | - Yves Chevalier
- CNRS, LAGEPP UMR 5007, Univ Lyon, Université Claude Bernard Lyon 1, 43 boulevard du 11 novembre 1918, Villeurbanne 69622, France
| | - Laurence Heinrich-Balard
- INSA Lyon, CNRS, MATEIS, UMR5510, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne 69100, France
| | - René M Botnar
- School of Biomedical Engineering and Imaging Sciences, King's College London, Westminster Bridge Road, London SE1 7EH, United Kingdom.,Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Avda. Vicuña Mackenna, Santiago 4860, Chile
| | | | - Giuseppe Digilio
- Department of Science and Technologic Innovation, Università del Piemonte Orientale ″Amedeo Avogadro″, Viale T. Michel 11, Alessandria 15121, Italy
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2
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Giammattei L, Passeri T, Padovan S, Froelich S. Vestibular schwannoma: care for soft tissues and subperineural dissection: how I do it. Acta Neurochir (Wien) 2021; 163:2247-2251. [PMID: 33704585 DOI: 10.1007/s00701-021-04801-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/22/2020] [Accepted: 03/03/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Recognition of the right surgical cleavage plane of a vestibular schwannoma is mandatory to preserve the facial nerve function. METHOD We describe here our surgical technique that is focused on soft tissues preservation and on subperineural dissection, avoiding direct exposure of the acoustico-facial complex in order to preserve facial nerve function. CONCLUSION Soft tissue dissection helps in reducing patient's postoperative discomfort. Meticulously keeping a subperineural plan of dissection enables to preserve facial nerve function while offering satisfying resection rates.
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Affiliation(s)
- L Giammattei
- Neurosurgery Department, Lariboisiere University Hospital, Paris, France.
| | - T Passeri
- Neurosurgery Department, Lariboisiere University Hospital, Paris, France
| | - S Padovan
- Neurosurgery Department, Lariboisiere University Hospital, Paris, France
| | - S Froelich
- Neurosurgery Department, Lariboisiere University Hospital, Paris, France
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3
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Padovan S, Carrera C, Catanzaro V, Grange C, Koni M, Digilio G. Glycol Chitosan Functionalized with a Gd(III) Chelate as a Redox-responsive Magnetic Resonance Imaging Probe to Label Cell Embedding Alginate Capsules. Chemistry 2021; 27:12289-12293. [PMID: 34160090 DOI: 10.1002/chem.202101657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 12/13/2022]
Abstract
One possibility for the non-invasive imaging of encapsulated cell grafts is to label the lumen of cell embedding capsules with a redox-responsive probe, as an increased extracellular reducing potential can be considered as a marker of hypoxia-induced necrosis. A Gd(III)-HPDO3A-like chelate has been conjugated to glycol-chitosan through a redox-responsive disulphide bond to obtain a contrast agent for Magnetic Resonance Imaging (MRI). Such a compound can be interspersed with fibroblasts within the lumen of alginate-chitosan capsules. Increasing reducing conditions within the extracellular microenvironment lead to the reductive cleavage of the disulphide bond and to the release of gadolinium in the form of a low molecular weight, non-ionic chelate. The efflux of such chelate from capsules is readily detected by a decrease of contrast enhancement in T1 -weighted MR images.
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Affiliation(s)
- Sergio Padovan
- Institute for Biostructures and Bioimages c/o Molecular Biotechnology Centre CNR, Via Nizza 52, 10126, Torino, Italy
| | - Carla Carrera
- Institute for Biostructures and Bioimages c/o Molecular Biotechnology Centre CNR, Via Nizza 52, 10126, Torino, Italy
| | - Valeria Catanzaro
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy.,Technology Transfer and Industrial Liaison Department, Politecnico di Torino, Torino, Italy
| | - Cristina Grange
- Department of Medical Sciences, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Malvina Koni
- Department of Medical Sciences, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Giuseppe Digilio
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy
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Catanzaro V, Digilio G, Capuana F, Padovan S, Cutrin JC, Carniato F, Porta S, Grange C, Filipović N, Stevanović M. Gadolinium-Labelled Cell Scaffolds to Follow-up Cell Transplantation by Magnetic Resonance Imaging. J Funct Biomater 2019; 10:E28. [PMID: 31269673 PMCID: PMC6787680 DOI: 10.3390/jfb10030028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 06/11/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 12/21/2022] Open
Abstract
Cell scaffolds are often used in cell transplantation as they provide a solid structural support to implanted cells and can be bioengineered to mimic the native extracellular matrix. Gadolinium fluoride nanoparticles (Gd-NPs) as a contrast agent for Magnetic Resonance Imaging (MRI) were incorporated into poly(lactide-co-glycolide)/chitosan scaffolds to obtain Imaging Labelled Cell Scaffolds (ILCSs), having the shape of hollow spherical/ellipsoidal particles (200-600 μm diameter and 50-80 μm shell thickness). While Gd-NPs incorporated into microparticles do not provide any contrast enhancement in T1-weighted (T1w) MR images, ILCSs can release Gd-NPs in a controlled manner, thus activating MRI contrast. ILCSs seeded with human mesenchymal stromal cells (hMSCs) were xenografted subcutaneously into either immunocompromised and immunocompetent mice without any immunosuppressant treatments, and the transplants were followed-up in vivo by MRI for 18 days. Immunocompromised mice showed a progressive activation of MRI contrast within the implants due to the release of Gd-NPs in the extracellular matrix. Instead, immunocompetent mice showed poor activation of MRI contrast due to the encapsulation of ILCSs within fibrotic capsules and to the scavenging of released Gd-NPs by phagocytic cells. In conclusion, the MRI follow-up of cell xenografts can report the host cell response to the xenograft. However, it does not strictly report on the viability of transplanted hMSCs.
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Affiliation(s)
- Valeria Catanzaro
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, I-15121 Alessandria, Italy
| | - Giuseppe Digilio
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, I-15121 Alessandria, Italy.
| | - Federico Capuana
- Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126 Torino, Italy
| | - Sergio Padovan
- Institute for Biostructures and Bioimages (CNR) c/o Molecular Biotechnology Center Via Nizza 52, 10126 Torino, Italy
| | - Juan C Cutrin
- Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126 Torino, Italy
| | - Fabio Carniato
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, I-15121 Alessandria, Italy
| | - Stefano Porta
- Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126 Torino, Italy
| | - Cristina Grange
- Department of Medical Sciences, University of Turin, Via Nizza 52, 10126 Torino, Italy
| | - Nenad Filipović
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, Serbia
| | - Magdalena Stevanović
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, Serbia
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Locatelli D, Pozzi F, Agresta G, Padovan S, Karligkiotis A, Castelnuovo P. Extended Endoscopic Endonasal Approach for Suprasellar Craniopharyngioma. J Neurol Surg B Skull Base 2018; 79:S196-S198. [PMID: 29404249 PMCID: PMC5796833 DOI: 10.1055/s-0038-1623529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 12/07/2017] [Indexed: 10/31/2022] Open
Abstract
Objectives We illustrate a suprasellar craniopharyngiomas treated with an extended endoscopic endonasal approach (EEEA). Design Case report of a 43-year-old male affected by cerebral lesion located in suprasellar region involving the third ventricle and compressing the neurovascular structures, causing an anterosuperior dislocation of the chiasma. There is a complete disruption of the pituitary stalk that can explain the clinical finding of partial anterior hypopituitarism and hyperprolactinemia. The lesion is characterized by a solid and cystic component. Considering the absence of lateral extension and the suprasellar location of the lesion, an EEEA is preferred. Setting University Hospital "Ospedale di Circolo," Department of Neurosurgery, Varese, Italy. Participants Neurosurgical and ENT Skull Base Team. Main Outcome Measures A bilateral parasagittal approach is performed using a four-hand technique. The first step of the surgery is the preparation of the Hadad's flap. The approach is extended to the planum sphenoidalis to expose the suprasellar region. The lesion is completely removed employing also an ultrasound aspirator. Skull base reconstruction is performed with three-layer technique: graft of fat tissue, fascia lata, and nasoseptal flap. Results No postoperative complications occurred. In the post-op, the patient presents a panhypopituitarism and an improvement in neurological status. The visual deficit remains stable. Post-op magnetic resonance imaging at 1 year documents the complete absence of pathological contrast enhancement. Conclusions EEEA is a feasible approach in treating craniopharyngioma with suprasellar extension. The advantages include optimal visualization, good resection rate, and absence of brain retraction. The link to the video can be found at: https://youtu.be/IYm-8P1jbBo .
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Affiliation(s)
- D Locatelli
- Department of Neurosurgery, University of Insubria - Ospedale di Circolo Fondazione Macchi, Varese, Italy
| | - F Pozzi
- Department of Neurosurgery, ASST Sette Laghi, Ospedale di Circolo Fondazione Macchi, Varese, Italy
| | - G Agresta
- Department of Neurosurgery, University of Pavia, Italy
| | - S Padovan
- Department of Neurosurgery, University of Pavia, Italy
| | - A Karligkiotis
- Department of Otorhinolaryngology, ASST Sette Laghi, Ospedale di Circolo Fondazione Macchi, Varese, Italy
| | - P Castelnuovo
- Department of Otorhinolaryngology, University of Insubria - Ospedale di Circolo Fondazione Macchi, Varese, Italy
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Roux C, Riganti C, Borgogno SF, Curto R, Curcio C, Catanzaro V, Digilio G, Padovan S, Puccinelli MP, Isabello M, Aime S, Cappello P, Novelli F. Endogenous glutamine decrease is associated with pancreatic cancer progression. Oncotarget 2017; 8:95361-95376. [PMID: 29221133 PMCID: PMC5707027 DOI: 10.18632/oncotarget.20545] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/04/2017] [Indexed: 12/12/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is becoming the second leading cause of cancer-related death in the Western world. The mortality is very high, which emphasizes the need to identify biomarkers for early detection. As glutamine metabolism alteration is a feature of PDAC, its in vivo evaluation may provide a useful tool for biomarker identification. Our aim was to identify a handy method to evaluate blood glutamine consumption in mouse models of PDAC. We quantified the in vitro glutamine uptake by Mass Spectrometry (MS) in tumor cell supernatants and showed that it was higher in PDAC compared to non-PDAC tumor and pancreatic control human cells. The increased glutamine uptake was paralleled by higher activity of most glutamine pathway-related enzymes supporting nucleotide and ATP production. Free glutamine blood levels were evaluated in orthotopic and spontaneous mouse models of PDAC and other pancreatic-related disorders by High-Performance Liquid Chromatography (HPLC) and/or MS. Notably we observed a reduction of blood glutamine as much as the tumor progressed from pancreatic intraepithelial lesions to invasive PDAC, but was not related to chronic pancreatitis-associated inflammation or diabetes. In parallel the increased levels of branched-chain amino acids (BCAA) were observed. By contrast blood glutamine levels were stable in non-tumor bearing mice. These findings demonstrated that glutamine uptake is measurable both in vitro and in vivo. The higher in vitro avidity of PDAC cells corresponded to a lower blood glutamine level as soon as the tumor mass grew. The reduction in circulating glutamine represents a novel tool exploitable to implement other diagnostic or prognostic PDAC biomarkers.
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Affiliation(s)
- Cecilia Roux
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
| | - Chiara Riganti
- Department of Oncology, University of Turin, 10126 Turin, Italy
| | - Sammy Ferri Borgogno
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
| | - Roberta Curto
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
| | - Claudia Curcio
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
| | - Valeria Catanzaro
- Department of Science and Technologic Innovation, Università del Piemonte Orientale “A. Avogadro”, 15121 Alessandria, Italy
| | - Giuseppe Digilio
- Department of Science and Technologic Innovation, Università del Piemonte Orientale “A. Avogadro”, 15121 Alessandria, Italy
| | - Sergio Padovan
- Institute for Biostructures and Bioimages (CNR) c/o Molecular Biotechnology Center, 10126 Turin, Italy
| | - Maria Paola Puccinelli
- Clinical Biochemistry Laboratory, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Monica Isabello
- Clinical Biochemistry Laboratory, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Paola Cappello
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Francesco Novelli
- Center for Experimental Research and Medical Studies, Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
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Ferrauto G, Di Gregorio E, Ruzza M, Catanzaro V, Padovan S, Aime S. Enzyme-Responsive LipoCEST Agents: Assessment of MMP-2 Activity by Measuring the Intra-liposomal Water 1
H NMR Shift. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706271] [Citation(s) in RCA: 7] [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] [Indexed: 11/11/2022]
Affiliation(s)
- Giuseppe Ferrauto
- Department of Molecular Biotechnologies and Health Sciences; University of Torino; Via Nizza 52 10126 Torino Italy
| | - Enza Di Gregorio
- Department of Molecular Biotechnologies and Health Sciences; University of Torino; Via Nizza 52 10126 Torino Italy
| | - Marta Ruzza
- Bioindustry Park “Silvano Fumero”; Colleretto Giacosa Torino Italy
| | - Valeria Catanzaro
- Department of Molecular Biotechnologies and Health Sciences; University of Torino; Via Nizza 52 10126 Torino Italy
| | - Sergio Padovan
- Institutes for Biostructures and Bioimages (CNR) c/o; Molecular Biotechnology Center; Via Nizza 52 10126 Torino Italy
| | - Silvio Aime
- Department of Molecular Biotechnologies and Health Sciences; University of Torino; Via Nizza 52 10126 Torino Italy
- Institutes for Biostructures and Bioimages (CNR) c/o; Molecular Biotechnology Center; Via Nizza 52 10126 Torino Italy
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8
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Ferrauto G, Di Gregorio E, Ruzza M, Catanzaro V, Padovan S, Aime S. Enzyme-Responsive LipoCEST Agents: Assessment of MMP-2 Activity by Measuring the Intra-liposomal Water 1 H NMR Shift. Angew Chem Int Ed Engl 2017; 56:12170-12173. [PMID: 28746744 DOI: 10.1002/anie.201706271] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 06/20/2017] [Revised: 07/22/2017] [Indexed: 12/25/2022]
Abstract
Mobile proton-containing solutes can be detected by MRI by the chemical exchange saturation transfer (CEST) method. CEST sensitivity is dramatically enhanced by using, as exchanging protons, the water molecules confined inside liposomes, shifted by a paramagnetic shift reagent. The chemical shift of the intraliposomal water resonance (δIL ) is affected by the overall shape of the supramolecular system. δIL of a spherical LipoCEST acts as a sensitive reporter of the distribution of streptavidin proteins anchored at the liposome surface by biotinylated phospholipids. This finding prompted the design of a MMP-2 responsive LipoCEST agent as the streptavidin moieties can be released from the liposome surfaces when a properly tailored enzyme-cleavable peptide is inserted on the phospholipids before the terminal biotin residues. δIL reports on the overall changes in the supramolecular architecture associated to the cleavage carried out by MMP-2.
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Affiliation(s)
- Giuseppe Ferrauto
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Enza Di Gregorio
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Marta Ruzza
- Bioindustry Park "Silvano Fumero", Colleretto Giacosa, Torino, Italy
| | - Valeria Catanzaro
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Sergio Padovan
- Institutes for Biostructures and Bioimages (CNR) c/o, Molecular Biotechnology Center, Via Nizza 52, 10126, Torino, Italy
| | - Silvio Aime
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy.,Institutes for Biostructures and Bioimages (CNR) c/o, Molecular Biotechnology Center, Via Nizza 52, 10126, Torino, Italy
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9
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Muñoz Úbeda M, Carniato F, Catanzaro V, Padovan S, Grange C, Porta S, Carrera C, Tei L, Digilio G. Gadolinium-Decorated Silica Microspheres as Redox-Responsive MRI Probes for Applications in Cell Therapy Follow-Up. Chemistry 2016; 22:7716-20. [PMID: 27037861 DOI: 10.1002/chem.201600962] [Citation(s) in RCA: 13] [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: 02/29/2016] [Indexed: 12/21/2022]
Abstract
The redox microenvironment within a cell graft can be considered as an indicator to assess whether the graft is metabolically active or hypoxic. We present a redox-responsive MRI probe based on porous silica microparticles whose surface has been decorated with a Gd-chelate through a disulphide bridge. Such microparticles are designed to be interspersed with therapeutic cells within a biocompatible hydrogel. The onset of reducing conditions within the hydrogel is paralleled by an increased clearance of Gd, that can be detected by MRI.
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Affiliation(s)
- Monica Muñoz Úbeda
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy
| | - Fabio Carniato
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy
| | - Valeria Catanzaro
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy.,Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Sergio Padovan
- Institute for Biostructures and Bioimages (CNR) c/o, Molecular Biotechnology Center, Via Nizza 52, 10126, Torino, Italy
| | - Cristina Grange
- Department of Medical Sciences, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Stefano Porta
- Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Carla Carrera
- Department of Molecular Biotechnology and Health Science & Center for Molecular Imaging, University of Turin, Via Nizza 52, 10126, Torino, Italy
| | - Lorenzo Tei
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy
| | - Giuseppe Digilio
- Department of Science and Technologic Innovation, Università del Piemonte Orientale "Amedeo Avogadro", Viale T. Michel 11, 15121, Alessandria, Italy.
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10
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Ekong R, Nellist M, Hoogeveen-Westerveld M, Wentink M, Panzer J, Sparagana S, Emmett W, Dawson NL, Malinge MC, Nabbout R, Carbonara C, Barberis M, Padovan S, Futema M, Plagnol V, Humphries SE, Migone N, Povey S. Variants Within TSC2 Exons 25 and 31 Are Very Unlikely to Cause Clinically Diagnosable Tuberous Sclerosis. Hum Mutat 2016; 37:364-70. [PMID: 26703369 PMCID: PMC4843954 DOI: 10.1002/humu.22951] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/07/2015] [Indexed: 11/16/2022]
Abstract
Inactivating mutations in TSC1 and TSC2 cause tuberous sclerosis complex (TSC). The 2012 international consensus meeting on TSC diagnosis and management agreed that the identification of a pathogenic TSC1 or TSC2 variant establishes a diagnosis of TSC, even in the absence of clinical signs. However, exons 25 and 31 of TSC2 are subject to alternative splicing. No variants causing clinically diagnosed TSC have been reported in these exons, raising the possibility that such variants would not cause TSC. We present truncating and in‐frame variants in exons 25 and 31 in three individuals unlikely to fulfil TSC diagnostic criteria and examine the importance of these exons in TSC using different approaches. Amino acid conservation analysis suggests significantly less conservation in these exons compared with the majority of TSC2 exons, and TSC2 expression data demonstrates that the majority of TSC2 transcripts lack exons 25 and/or 31 in many human adult tissues. In vitro assay of both exons shows that neither exon is essential for TSC complex function. Our evidence suggests that variants in TSC2 exons 25 or 31 are very unlikely to cause classical TSC, although a role for these exons in tissue/stage specific development cannot be excluded.
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Affiliation(s)
- Rosemary Ekong
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, UK
| | - Mark Nellist
- Department of Clinical Genetics, Erasmus MC, Rotterdam, 3015CN, The Netherlands
| | | | - Marjolein Wentink
- Department of Clinical Genetics, Erasmus MC, Rotterdam, 3015CN, The Netherlands
| | - Jessica Panzer
- Department of Pediatrics, Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, 19104-4318.,Department of Neurology Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104
| | | | - Warren Emmett
- University College London Genetics Institute, Darwin building, Gower Street, London, WC1E 6BT, UK
| | - Natalie L Dawson
- Institute of Structural and Molecular Biology, University College London, London, WC1E 6BT, UK
| | - Marie Claire Malinge
- UF de Génétique Moléculaire, Département de Biochimie Génétique PBMM, Institut de Biologie en Santé CHU Angers, 49933 Angers, Cedex 9, France
| | - Rima Nabbout
- Centre de Référence des Epilepsies Rares, Hôpital Universitaire Necker - Enfants Malades, 75015, Paris, France
| | - Caterina Carbonara
- Neonatology and Neonatal Intensive Care Unit, S. Anna Hospital, 10126, Torino, Italy
| | - Marco Barberis
- Laboratory of Molecular Genetics, Azienda Ospedaliero Universitaria Città della Salute e della Scienza, Presidio OIRM S. Anna, 10126, Torino, Italy
| | - Sergio Padovan
- CNR-IBB UOS-TO at MBC, Molecular Biotechnology Center for University of Turin, 10126, Torino, Italy
| | - Marta Futema
- Centre for Cardiovascular Genetics, British Heart Foundation Laboratories, Institute of Cardiovascular Sciences, University College London, London, UK
| | - Vincent Plagnol
- University College London Genetics Institute, Darwin building, Gower Street, London, WC1E 6BT, UK
| | - Steve E Humphries
- Centre for Cardiovascular Genetics, British Heart Foundation Laboratories, Institute of Cardiovascular Sciences, University College London, London, UK
| | - Nicola Migone
- Department of Medical Sciences, University of Turin, 10126, Torino, Italy
| | - Sue Povey
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, UK
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11
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Catanzaro V, Gringeri CV, Menchise V, Padovan S, Boffa C, Dastrù W, Chaabane L, Digilio G, Aime S. AR2p/R1pRatiometric Procedure to Assess Matrix Metalloproteinase-2 Activity by Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209286] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Catanzaro V, Gringeri CV, Menchise V, Padovan S, Boffa C, Dastrù W, Chaabane L, Digilio G, Aime S. A R2p /R1p ratiometric procedure to assess matrix metalloproteinase-2 activity by magnetic resonance imaging. Angew Chem Int Ed Engl 2013; 52:3926-30. [PMID: 23450786 DOI: 10.1002/anie.201209286] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Indexed: 01/30/2023]
Affiliation(s)
- Valeria Catanzaro
- Istituto di Ricerca Diagnostica e Nucleare SDN, Via Gianturco 113, 80143 Napoli, Italy
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13
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Cagnoli C, Stevanin G, Brussino A, Barberis M, Mancini C, Margolis RL, Holmes SE, Nobili M, Forlani S, Padovan S, Pappi P, Zaros C, Leber I, Ribai P, Pugliese L, Assalto C, Brice A, Migone N, Dürr A, Brusco A. Missense mutations in the AFG3L2 proteolytic domain account for ∼1.5% of European autosomal dominant cerebellar ataxias. Hum Mutat 2011; 31:1117-24. [PMID: 20725928 DOI: 10.1002/humu.21342] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Spinocerebellar ataxia type 28 is an autosomal dominant form of cerebellar ataxia (ADCA) caused by mutations in AFG3L2, a gene that encodes a subunit of the mitochondrial m-AAA protease. We screened 366 primarily Caucasian ADCA families, negative for the most common triplet expansions, for point mutations in AFG3L2 using DHPLC. Whole-gene deletions were excluded in 300 of the patients, and duplications were excluded in 129 patients. We found six missense mutations in nine unrelated index cases (9/366, 2.6%): c.1961C>T (p.Thr654Ile) in exon 15, c.1996A>G (p.Met666Val), c.1997T>G (p.Met666Arg), c.1997T>C (p.Met666Thr), c.2011G>A (p.Gly671Arg), and c.2012G>A (p.Gly671Glu) in exon 16. All mutated amino acids were located in the C-terminal proteolytic domain. In available cases, we demonstrated the mutations segregated with the disease. Mutated amino acids are highly conserved, and bioinformatic analysis indicates the substitutions are likely deleterious. This investigation demonstrates that SCA28 accounts for ∼3% of ADCA Caucasian cases negative for triplet expansions and, in extenso, to ∼1.5% of all ADCA. We further confirm both the involvement of AFG3L2 gene in SCA28 and the presence of a mutational hotspot in exons 15-16. Screening for SCA28, is warranted in patients who test negative for more common SCAs and present with a slowly progressive cerebellar ataxia accompanied by oculomotor signs.
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Affiliation(s)
- Claudia Cagnoli
- Department of Genetics, Biology and Biochemistry, University of Torino, Torino, Italy
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14
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Brussino A, D'Alfonso S, Cagnoli C, Di Gregorio E, Barberis M, Padovan S, Vaula G, Pinessi L, Squadrone S, Abete MC, Collimedaglia L, Guerini FR, Migone N, Brusco A. Mutations in the lamin B1 gene are not present in multiple sclerosis. Eur J Neurol 2009; 16:544-6. [PMID: 19348623 DOI: 10.1111/j.1468-1331.2009.02536.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Whole gene duplication of the lamin B1 gene (LMNB1), encoding for a protein of the nuclear lamina, causes an adult-onset autosomal dominant leukodystrophy (ADLD). Clinical features of ADLD (onset in adult life, dysautonomic symptoms, followed by pyramidal and cerebellar dysfunctions) partially resemble those of multiple sclerosis (MS), particularly the primary-progressive form. Our aim was to test whether LMNB1 gene mutations were present amongst patients with a diagnosis of MS. METHODS One hundred eighty-two MS patients were screened for copy number variations of the LMNB1 gene using a qPCR assay. Point mutations in the LMNB1 gene were searched by denaturing high-performance liquid chromatography and direct sequencing in a subgroup of 16 patients with familial MS. RESULTS No duplication/deletion of the lamin B1 gene was found amongst MS patients, and no point mutation was identified in the familial cases. CONCLUSION Our work indicates that lamin B1 defects are probably not responsible for signs and symptoms resembling multiple sclerosis.
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Affiliation(s)
- A Brussino
- Department of Genetics, Biology and Biochemistry, University of Torino, and S.C.D.U. Medical Genetics, A.O.U. San Giovanni Battista, Torino, Italy
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15
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Cagnoli C, Brussino A, Di Gregorio E, Caroppo P, Stola S, Dragone E, Ferrone M, Padovan S, Migone N, Orsi L, Brusco A. Mutations in the POLG1 gene are not a relevant cause of cerebellar ataxia in Italy. J Neurol 2008; 255:1079-80. [PMID: 18446310 DOI: 10.1007/s00415-008-0772-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2006] [Revised: 10/02/2007] [Accepted: 10/09/2007] [Indexed: 11/25/2022]
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Vigliano P, Canavese C, Bobba B, Genitori L, Papalia F, Padovan S, Forni M. Transmantle dysplasia in tuberous sclerosis: clinical features and surgical outcome in four children. J Child Neurol 2002; 17:752-8. [PMID: 12546430 DOI: 10.1177/08830738020170101601] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In the literature, several malformations of cortical development have been described as additional lesions in tuberous sclerosis complex. Among these lesions, a very large focal cortical dysplasia has peculiar magnetic resonance imaging features: a signal abnormality that extends radially inward toward the lateral ventricle from the pachygyric cortical surface plus a homogeneous clinical picture. Affected patients have early-onset drug-resistant epilepsy and severe developmental delay. We describe the clinical, genetic, neurophysiologic, and neuroradiologic characteristics of four patients affected by tuberous sclerosis and this type of cortical dysplasia these patients are of special interest because they have been operated on for their dysplastic lesions. Total control of seizures has been achieved in the three children who underwent a complete lesionectomy. This result cannot be permanent, however, because of the presence of other cortical tubers which could become epileptogenic. All things considered, our choice was to give these children at least temporary relief from severe epilepsy and possibly support for developmental progression.
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Longa L, Saluto A, Brusco A, Polidoro S, Padovan S, Allavena A, Carbonara C, Grosso E, Migone N. TSC1 and TSC2 deletions differ in size, preference for recombinatorial sequences, and location within the gene. Hum Genet 2001; 108:156-66. [PMID: 11281455 DOI: 10.1007/s004390100460] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Large TSC gene rearrangements are not rare findings in tuberous sclerosis. Interestingly, all deletions, duplications and inversions so far described involve TSC2, none being associated with TSC1. In order to shed light on the structural basis of the preferential DNA rearrangements in TSC2 over TSC1 and to assess, in an unselected patient population, the prevalence of large re-arrangements in both TSC loci, we screened 202 tuberous sclerosis patients consecutively referred at our center. Southern blot analysis on EcoRI+HindIII double-digested DNA identified 19 partial or full-length gene deletions: three involved TSC1 and sixteen TSC2. The breakpoint sequence of seven internal deletions, three in TSC1 and four in TSC2, allowed us to speculate on the mechanism favoring TSC2 unequal recombinations and to identify a deletion hot spot that lies in TSC1 and that may be relevant in the routine genetic testing of tuberous sclerosis. Briefly, three major features appear to distinguish TSC1 from TSC2 deletions: (1) deletion size: all TSC1 deletions are within the transcriptional unit, whereas 12 of the 16 TSC2 deletions have at least one external breakpoint; (2) location within the gene: all TSC1 deletions are confined to the 3'end of the gene (all three 5' breakpoints being located in intron 20) thus resulting in the same frameshift mutation following amino acid K875, whereas the TSC2 internal breakpoints appear to be scattered along the gene; (3) preference for recombinatorial sequences: six out of eight internal TSC2 breakpoints map within Alu repeats, whereas none of the three TSC1 deletions appear to be Alu-mediated. Indeed, in the latter gene, unique structural features (a purine-rich tract flanked by pyrimidine-rich segments) surrounding one of the two identified breakpoint cluster regions might play a role in promoting inappropriate recombinations.
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Affiliation(s)
- L Longa
- Dipartimento di Genetica, Biologia e Biochemica, Turin, Italy
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18
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Migone N, Padovan S, Zappador C, Giachino C, Bottaro M, Matullo G, Carbonara C, Libero GD, Casorati G. Restriction of the T-cell receptor V delta gene repertoire is due to preferential rearrangement and is independent of antigen selection. Immunogenetics 1995; 42:323-332. [PMID: 7590965 DOI: 10.1007/bf00179393] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To determine whether the limited V gene usage by the T-cell receptor delta (TCRD) chain is dictated by preferential rearrangement or by antigen selection, we characterized and compared the TCRDV gene repertoire of the productive with that of the unproductive allele in 80 human TCRG/TCRD clones. Six different V genes were found on the expressed allele; two of them, provisionally named DV7 and DV8, have not been described before on the surface of TCRG/TCRD T cells. Overall, six V genes and six non-V elements were isolated from the unproductive allele. Interestingly, the same set of genes was rearranged both in the productive and in the unproductive chromosome. These findings seem to suggest that antigen-independent mechanisms play a major role in the restriction of the TCRDV gene repertoire.
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Affiliation(s)
- N Migone
- Dipartimento di Genetica, Biologia e Chimica Medica, Universita di Torino and CNR Immunogenetica ed Oncologia Sperimentale, Via Santena 19, 10126 Torino, Italy
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Abstract
Psoriasis might be a widespread membrane disorder. Therefore, the red blood cell sodium, potassium and lithium outward fluxes (through Na-K-ATPase, Na-K-Cl co-transport, Li-Na countertransport and passive permeability), as well as the Na and K content, were studied in 31 psoriatic patients and 23 normal controls. A significant increase in intracellular potassium content, in the maximal velocity of the Na-K ATPase and of Na-K-Cl co-transport as well as in the outward passive permeability for Na were found in the psoriatic patients compared with controls. On the contrary, no differences were observed in sodium content, Li-Na countertransport and passive potassium permeability between the two groups. These results are compatible with a selective increase in inward, as well as outward, membrane permeability to sodium, which is compensated for by increased activity of the Na-K pump, and of the outward Na-K-Cl cotransport with a secondarily increased erythrocyte potassium content. They indicate that the red blood cell might be a useful model for the study of membrane transport in psoriatics.
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Peserico A, Zanetti G, Padovan S, Bertoli P, Fornasa CV, Cipriani R, Ambrosio GB, Zamboni S, Pagnan A. Relationship between body weight and blood pressure and some metabolic parameters in psoriatic patients. Br J Dermatol 1988; 118:191-4. [PMID: 3348964 DOI: 10.1111/j.1365-2133.1988.tb01773.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The relationship between body weight and blood pressure, total serum cholesterol, triglycerides, uric acid and glucose was investigated in 203 psoriatic patients in comparison with 904 healthy controls. In the psoriatic patients, these parameters were clearly related to their body weight. Those psoriatic patients of normal weight exhibited lower mean values of all the parameters compared with overweight psoriatic patients while they did not differ from control subjects of normal weight. Our results suggest that only overweight psoriatic patients exhibit the metabolic abnormalities frequently reported in the literature, while psoriatic patients of normal weight do not differ from the general population in this respect.
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Affiliation(s)
- A Peserico
- Clinica Dermatologica, Istituto di Medicina Clinica, Universita' di Padova, Italy
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Peserico A, Semplicini A, Degan P, Padovan S, De Toni R, Cipriani R, Veller Fornasa C, Rossi GP, Pessina AC. [Arterial hypertension and the renin-angiotensin-aldosterone system in psoriasis]. GIORN ITAL DERMAT V 1986; 121:83-6. [PMID: 3710534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Peserico A, Zanetti G, Cipriani R, Padovan S, Veller Fornasa C, Ziron L. [Relation between hypertriglyceridemia and reduced tolerance to carbohydrates in psoriasis patients]. GIORN ITAL DERMAT V 1985; 120:53-4. [PMID: 4007936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Stipetić S, Padovan S, Pentz A. [Tumors of the orbit (author's transl)]. Lijec Vjesn 1981; 103:45-7. [PMID: 7289735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Lovrencić M, Vesely V, Marotti M, Car D, Padovan S, Striga M, Ríbarić K, Stipetić S, Jélicić I. [Evaluation of computerised tomography in diagnosis of orbital diseases (author's transl)]. Lijec Vjesn 1981; 103:24-30. [PMID: 7289732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Oresković M, Petrić K, Padovan S. The oto-neuro-ophthalmologic diagnosis in tumours of the nasopharynx and of the apex of the petrous pyramid. J Laryngol Otol 1968; 82:633-7. [PMID: 5659562 DOI: 10.1017/s0022215100069243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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