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Germani S, Van Ho AT, Cherubini A, Varone E, Chernorudskiy A, Renna GM, Fumagalli S, Gobbi M, Lucchetti J, Bolis M, Guarrera L, Craparotta I, Rastelli G, Piccoli G, de Napoli C, Nogara L, Poggio E, Brini M, Cattaneo A, Bachi A, Simmen T, Calì T, Quijano-Roy S, Boncompagni S, Blaauw B, Ferreiro A, Zito E. SEPN1-related myopathy depends on the oxidoreductase ERO1A and is druggable with the chemical chaperone TUDCA. Cell Rep Med 2024; 5:101439. [PMID: 38402623 PMCID: PMC10982971 DOI: 10.1016/j.xcrm.2024.101439] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 05/09/2023] [Revised: 12/06/2023] [Accepted: 01/31/2024] [Indexed: 02/27/2024]
Abstract
Selenoprotein N (SEPN1) is a protein of the endoplasmic reticulum (ER) whose inherited defects originate SEPN1-related myopathy (SEPN1-RM). Here, we identify an interaction between SEPN1 and the ER-stress-induced oxidoreductase ERO1A. SEPN1 and ERO1A, both enriched in mitochondria-associated membranes (MAMs), are involved in the redox regulation of proteins. ERO1A depletion in SEPN1 knockout cells restores ER redox, re-equilibrates short-range MAMs, and rescues mitochondrial bioenergetics. ERO1A knockout in a mouse background of SEPN1 loss blunts ER stress and improves multiple MAM functions, including Ca2+ levels and bioenergetics, thus reversing diaphragmatic weakness. The treatment of SEPN1 knockout mice with the ER stress inhibitor tauroursodeoxycholic acid (TUDCA) mirrors the results of ERO1A loss. Importantly, muscle biopsies from patients with SEPN1-RM exhibit ERO1A overexpression, and TUDCA-treated SEPN1-RM patient-derived primary myoblasts show improvement in bioenergetics. These findings point to ERO1A as a biomarker and a viable target for intervention and to TUDCA as a pharmacological treatment for SEPN1-RM.
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Affiliation(s)
- Serena Germani
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Andrew Tri Van Ho
- Basic and Translational Myology Laboratory, Université Paris, BFA, UMR 8251, CNRS, 75013 Paris, France
| | | | - Ersilia Varone
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | | | | | - Marco Gobbi
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Jacopo Lucchetti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Marco Bolis
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Bioinformatics Core Unit, Institute of Oncology Research (IOR), 6500 Bellinzona, Switzerland
| | - Luca Guarrera
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | - Giorgia Rastelli
- CAST, Center for Advanced Studies and Technology & DNICS, Department of Neuroscience, Imaging and Clinical Sciences, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Giorgia Piccoli
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Cosimo de Napoli
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Leonardo Nogara
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Department of Pharmaceutical Sciences, University of Padova, Padova, Italy
| | - Elena Poggio
- Department of Biology, University of Padova, Padova, Italy
| | - Marisa Brini
- Department of Pharmaceutical Sciences, University of Padova, Padova, Italy; Department of Biology, University of Padova, Padova, Italy; Study Center for Neurodegeneration (CESNE), University of Padova, Padova, Italy
| | | | - Angela Bachi
- IFOM-ETS AIRC Institute of Molecular Oncology, Milan, Italy
| | - Thomas Simmen
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Tito Calì
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Study Center for Neurodegeneration (CESNE), University of Padova, Padova, Italy; Padova Neuroscience Center, University of Padova, Padova, Italy
| | - Susana Quijano-Roy
- APHP-Université Paris-Saclay, Reference Center for Neuromuscular Disorders Nord-Est-Ile de France, FILNEMUS, ERN-Euro-NMD, Creteil, France; Pediatric Neurology and ICU Department, DMU Santé Enfant Adolescent (SEA), Raymond Poincaré University Hospital, Garches, France
| | - Simona Boncompagni
- CAST, Center for Advanced Studies and Technology & DNICS, Department of Neuroscience, Imaging and Clinical Sciences, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy; Venetian Institute of Molecular Medicine, Padova, Italy.
| | - Ana Ferreiro
- Basic and Translational Myology Laboratory, Université Paris, BFA, UMR 8251, CNRS, 75013 Paris, France; APHP, Reference Center for Neuromuscular Disorders Nord-Est-Ile de France, Neuromyology Department, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.
| | - Ester Zito
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy; Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy.
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Villani KR, Zhong R, Henley-Beasley CS, Rastelli G, Boncompagni S, Barton ER, Wei-LaPierre L. Loss of calpain 3 dysregulates store-operated calcium entry and its exercise response in mice. bioRxiv 2024:2024.01.12.575391. [PMID: 38293127 PMCID: PMC10827051 DOI: 10.1101/2024.01.12.575391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Limb-Girdle Muscular Dystrophy 2A (LGMD2A) is caused by mutations in the CAPN3 gene encoding Calpain 3, a skeletal-muscle specific, Ca2+-dependent protease. Localization of Calpain 3 within the triad suggests it contributes to Ca2+ homeostasis. Through live-cell Ca2+ measurements, muscle mechanics, immunofluorescence, and electron microscopy (EM) in Capn3 deficient (C3KO) and wildtype (WT) mice, we determined if loss of Calpain 3 altered Store-Operated Calcium Entry (SOCE) activity. Direct Ca2+ influx measurements revealed loss of Capn3 elicits elevated resting SOCE and increased resting cytosolic Ca2+, supported by high incidence of calcium entry units (CEUs) observed by EM. C3KO and WT mice were subjected to a single bout of treadmill running to elicit SOCE. Within 1HR post-treadmill running, C3KO mice exhibited diminished force production in extensor digitorum longus muscles and a greater decay of Ca2+ transients in flexor digitorum brevis muscle fibers during repetitive stimulation. Striking evidence for impaired exercise-induced SOCE activation in C3KO mice included poor colocalization of key SOCE proteins, stromal-interacting molecule 1 (STIM1) and ORAI1, combined with disappearance of CEUs in C3KO muscles. These results demonstrate that Calpain 3 is a key regulator of SOCE in skeletal muscle and identify SOCE dysregulation as a contributing factor to LGMD2A pathology.
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Affiliation(s)
- Katelyn R. Villani
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, FL, USA
| | - Renjia Zhong
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, FL, USA
- Department of Emergency Medicine, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - C. Spencer Henley-Beasley
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, FL, USA
- Myology Institute, University of Florida, FL, USA
| | - Giorgia Rastelli
- Center for Advanced Studies and Technology and Department of Neuroscience, Imaging and Clinical Sciences, University G. d’Annunzio of Chieti–Pescara, Chieti, Italy
| | - Simona Boncompagni
- Center for Advanced Studies and Technology and Department of Neuroscience, Imaging and Clinical Sciences, University G. d’Annunzio of Chieti–Pescara, Chieti, Italy
| | - Elisabeth R. Barton
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, FL, USA
- Myology Institute, University of Florida, FL, USA
| | - Lan Wei-LaPierre
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, FL, USA
- Myology Institute, University of Florida, FL, USA
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Cadile F, Recchia D, Ansaldo M, Rossi P, Rastelli G, Boncompagni S, Brocca L, Pellegrino MA, Canepari M. Diaphragm Fatigue in SMNΔ7 Mice and Its Molecular Determinants: An Underestimated Issue. Int J Mol Sci 2023; 24:14953. [PMID: 37834400 PMCID: PMC10574014 DOI: 10.3390/ijms241914953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/11/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Spinal muscular atrophy (SMA) is a genetic disorder characterized by the loss of spinal motor neurons leading to muscle weakness and respiratory failure. Mitochondrial dysfunctions are found in the skeletal muscle of patients with SMA. For obvious ethical reasons, the diaphragm muscle is poorly studied, notwithstanding the very important role that respiratory involvement plays in SMA mortality. The main goal of this study was to investigate diaphragm functionality and the underlying molecular adaptations in SMNΔ7 mice, a mouse model that exhibits symptoms similar to that of patients with intermediate type II SMA. Functional, biochemical, and molecular analyses on isolated diaphragm were performed. The obtained results suggest the presence of an intrinsic energetic imbalance associated with mitochondrial dysfunction and a significant accumulation of reactive oxygen species (ROS). In turn, ROS accumulation can affect muscle fatigue, cause diaphragm wasting, and, in the long run, respiratory failure in SMNΔ7 mice. Exposure to the antioxidant molecule ergothioneine leads to the functional recovery of the diaphragm, confirming the presence of mitochondrial impairment and redox imbalance. These findings suggest the possibility of carrying out a dietary supplementation in SMNΔ7 mice to preserve their diaphragm function and increase their lifespan.
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Affiliation(s)
- Francesca Cadile
- Department of Molecular Medicine, via Forlanini 6, University of Pavia, 27100 Pavia, Italy; (F.C.); (M.A.); (L.B.); (M.A.P.)
| | - Deborah Recchia
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, 27100 Pavia, Italy; (D.R.); (P.R.)
| | - Massimiliano Ansaldo
- Department of Molecular Medicine, via Forlanini 6, University of Pavia, 27100 Pavia, Italy; (F.C.); (M.A.); (L.B.); (M.A.P.)
| | - Paola Rossi
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, 27100 Pavia, Italy; (D.R.); (P.R.)
| | - Giorgia Rastelli
- Center for Advanced Studies and Technology, University G. d’Annunzio of Chieti-Pescara, 66100 Chieti, Italy; (G.R.); (S.B.)
| | - Simona Boncompagni
- Center for Advanced Studies and Technology, University G. d’Annunzio of Chieti-Pescara, 66100 Chieti, Italy; (G.R.); (S.B.)
- Department of Neuroscience, Imaging and Clinical Sciences, University G. d’Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Lorenza Brocca
- Department of Molecular Medicine, via Forlanini 6, University of Pavia, 27100 Pavia, Italy; (F.C.); (M.A.); (L.B.); (M.A.P.)
| | - Maria Antonietta Pellegrino
- Department of Molecular Medicine, via Forlanini 6, University of Pavia, 27100 Pavia, Italy; (F.C.); (M.A.); (L.B.); (M.A.P.)
| | - Monica Canepari
- Department of Molecular Medicine, via Forlanini 6, University of Pavia, 27100 Pavia, Italy; (F.C.); (M.A.); (L.B.); (M.A.P.)
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Covani U, Giammarinaro E, Di Pietro N, Boncompagni S, Rastelli G, Romasco T, Velasco-Ortega E, Jimenez-Guerra A, Iezzi G, Piattelli A, Marconcini S. Electron Microscopy (EM) Analysis of Collagen Fibers in the Peri-Implant Soft Tissues around Two Different Abutments. J Funct Biomater 2023; 14:445. [PMID: 37754859 PMCID: PMC10532031 DOI: 10.3390/jfb14090445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/28/2023] Open
Abstract
The design of the implant prosthesis-abutment complex appears crucial for shaping healthy and stable peri-implant soft tissues. The aim of the present animal study was to compare two implants with different healing abutment geometries: a concave design (TEST) and a straight one (CTRL). Transmission electron microscopy (TEM) was used to quantify the three-dimensional topography and morphological properties of collagen at nanoscale resolution. 2 swine were included in the experiment and 6 implants per animal were randomly placed in the left or right hemimandible in either the physiologically mature bone present between the lower canine and first premolar or in the mandibular premolar area, within tooth extraction sites. Each CTRL implant was positioned across from its respective TEST implant on the other side of the jaw. After 12 weeks of healing, 8 specimens (4 CTRL and 4 TEST) were retrieved and prepared for histological and TEM analysis. The results showed a significantly higher percentage of area covered by collagen bundles and average bundle size in TEST implants, as well as a significant decrease in the number of longitudinally oriented bundles with respect to CTRL implants, which is potentially due to the larger size of TEST bundles. These data suggest that a concave transmucosal abutment design serves as a scaffold, favoring the deposition and growth of a well-organized peri-implant collagen structure over the implant platform in the early healing phase, also promoting the convergence of collagen fibers toward the abutment collar.
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Affiliation(s)
- Ugo Covani
- Department of Stomatology, Tuscan Dental Institute, 55041 Lido di Camaiore, Italy; (U.C.); (E.G.); (S.M.)
| | - Enrica Giammarinaro
- Department of Stomatology, Tuscan Dental Institute, 55041 Lido di Camaiore, Italy; (U.C.); (E.G.); (S.M.)
| | - Natalia Di Pietro
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (G.I.)
- Center for Advanced Studies and Technology—CAST, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (S.B.); (G.R.)
| | - Simona Boncompagni
- Center for Advanced Studies and Technology—CAST, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (S.B.); (G.R.)
- Department of Neuroscience, Imaging and Clinical Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Giorgia Rastelli
- Center for Advanced Studies and Technology—CAST, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (S.B.); (G.R.)
- Department of Neuroscience, Imaging and Clinical Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Tea Romasco
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (G.I.)
- Center for Advanced Studies and Technology—CAST, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (S.B.); (G.R.)
| | - Eugenio Velasco-Ortega
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41013 Seville, Spain; (E.V.-O.); (A.J.-G.)
| | - Alvaro Jimenez-Guerra
- Department of Stomatology, Faculty of Dentistry, University of Seville, 41013 Seville, Spain; (E.V.-O.); (A.J.-G.)
| | - Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (G.I.)
| | - Adriano Piattelli
- School of Dentistry, Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy;
- Facultad de Medicina, UCAM Universidad Católica San Antonio de Murcia, 30107 Murcia, Spain
| | - Simone Marconcini
- Department of Stomatology, Tuscan Dental Institute, 55041 Lido di Camaiore, Italy; (U.C.); (E.G.); (S.M.)
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5
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Michelucci A, Pietrangelo L, Rastelli G, Protasi F, Dirksen RT, Boncompagni S. Constitutive assembly of Ca2+ entry units in soleus muscle from calsequestrin knockout mice. J Gen Physiol 2022; 154:213542. [PMID: 36222861 PMCID: PMC9565155 DOI: 10.1085/jgp.202213114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 07/05/2022] [Accepted: 07/27/2022] [Indexed: 12/25/2022] Open
Abstract
Calcium (Ca2+) entry units (CEUs) are junctions within the I band of the sarcomere between stacks of sarcoplasmic reticulum (SR) cisternae and extensions of the transverse (T)-tubule. CEUs contain STIM1 and Orai1 proteins, the molecular machinery of store-operated Ca2+ entry (SOCE). In extensor digitorum longus (EDL) fibers of wild-type (WT) mice, CEUs transiently assemble during acute exercise and disassemble several hours thereafter. By contrast, calsequestrin-1 (CASQ1) ablation induces a compensatory constitutive assembly of CEUs in EDL fibers, resulting in enhanced constitutive and maximum SOCE that counteracts SR Ca2+ depletion during repetitive activity. However, whether CEUs form in slow-twitch fibers, which express both the skeletal CASQ1 and the cardiac CASQ2 isoforms, is unknown. Herein, we compared the structure and function of soleus muscles from WT and knockout mice that lack either CASQ1 (CASQ1-null) or both CASQs (dCASQ-null). Ultrastructural analyses showed that SR/T-tubule junctions at the I band, virtually identical to CEUs in EDL muscle, were present and more frequent in CASQ1-null than WT mice, with dCASQ-null exhibiting the highest incidence. The greater incidence of CEUs in soleus from dCASQ-null mice correlated with increased specific force production during repetitive, high-frequency stimulation, which depended on Ca2+ entry. Consistent with this, Orai1 expression was significantly increased in soleus of CASQ1-null mice, but even more in dCASQ-null mice, compared with WT. Together, these results strengthen the concept that CEU assembly strongly depends on CASQ expression and provides an alternative source of Ca2+ needed to refill SR Ca2+ stores to maintain specific force production during sustained muscle activity.
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Affiliation(s)
- Antonio Michelucci
- Center for Advanced Studies and Technology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy.,Department of Chemistry, Biology, and Biotechnology, University of Perugia, Perugia, Italy
| | - Laura Pietrangelo
- Center for Advanced Studies and Technology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy.,Department of Medicine and Aging Sciences, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
| | - Giorgia Rastelli
- Center for Advanced Studies and Technology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
| | - Feliciano Protasi
- Center for Advanced Studies and Technology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy.,Department of Medicine and Aging Sciences, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
| | - Robert T Dirksen
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, NY
| | - Simona Boncompagni
- Center for Advanced Studies and Technology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy.,Department of Neuroscience, Imaging, and Clinical Sciences, University G. D'Annunzio of Chieti-Pescara, Chieti, Italy
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6
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Marchesini M, Gherli A, Montanaro A, Patrizi L, Sorrentino C, Pagliaro L, Rompietti C, Kitara S, Heit S, Olesen CE, Møller JV, Savi M, Bocchi L, Vilella R, Rizzi F, Baglione M, Rastelli G, Loiacono C, La Starza R, Mecucci C, Stegmaier K, Aversa F, Stilli D, Lund Winther AM, Sportoletti P, Bublitz M, Dalby-Brown W, Roti G. Blockade of Oncogenic NOTCH1 with the SERCA Inhibitor CAD204520 in T Cell Acute Lymphoblastic Leukemia. Cell Chem Biol 2020; 27:678-697.e13. [PMID: 32386594 PMCID: PMC7305996 DOI: 10.1016/j.chembiol.2020.04.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 07/04/2019] [Revised: 02/14/2020] [Accepted: 03/31/2020] [Indexed: 12/14/2022]
Abstract
The identification of SERCA (sarco/endoplasmic reticulum calcium ATPase) as a target for modulating gain-of-function NOTCH1 mutations in Notch-dependent cancers has spurred the development of this compound class for cancer therapeutics. Despite the innate toxicity challenge associated with SERCA inhibition, we identified CAD204520, a small molecule with better drug-like properties and reduced off-target Ca2+ toxicity compared with the SERCA inhibitor thapsigargin. In this work, we describe the properties and complex structure of CAD204520 and show that CAD204520 preferentially targets mutated over wild-type NOTCH1 proteins in T cell acute lymphoblastic leukemia (T-ALL) and mantle cell lymphoma (MCL). Uniquely among SERCA inhibitors, CAD204520 suppresses NOTCH1-mutated leukemic cells in a T-ALL xenografted model without causing cardiac toxicity. This study supports the development of SERCA inhibitors for Notch-dependent cancers and extends their application to cases with isolated mutations in the PEST degradation domain of NOTCH1, such as MCL or chronic lymphocytic leukemia (CLL).
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MESH Headings
- Animals
- Antineoplastic Agents/chemical synthesis
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/pharmacology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Drug Screening Assays, Antitumor
- Enzyme Inhibitors/chemical synthesis
- Enzyme Inhibitors/chemistry
- Enzyme Inhibitors/pharmacology
- Female
- Humans
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred ICR
- Mice, Inbred NOD
- Mice, SCID
- Molecular Structure
- Mutation
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
- Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/metabolism
- Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/pathology
- Receptor, Notch1/antagonists & inhibitors
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Signal Transduction/drug effects
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Affiliation(s)
- Matteo Marchesini
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Andrea Gherli
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Anna Montanaro
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Laura Patrizi
- University of Perugia, Department of Medicine, Hematology and Clinical Immunology, Perugia 06123, Italy
| | - Claudia Sorrentino
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Luca Pagliaro
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Chiara Rompietti
- University of Perugia, Department of Medicine, Hematology and Clinical Immunology, Perugia 06123, Italy
| | - Samuel Kitara
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Sabine Heit
- University of Oxford, Department of Biochemistry, Oxford OX1 3QU, UK
| | - Claus E Olesen
- Aarhus University, Department of Biomedicine, 8000 Aarhus C, Denmark
| | - Jesper V Møller
- Aarhus University, Department of Biomedicine, 8000 Aarhus C, Denmark
| | - Monia Savi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parma 43124, Italy
| | - Leonardo Bocchi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parma 43124, Italy
| | - Rocchina Vilella
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parma 43124, Italy
| | - Federica Rizzi
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy; INBB - Biostructures and Biosystems National Institute, Rome 00136, Italy
| | - Marilena Baglione
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Giorgia Rastelli
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Caterina Loiacono
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Roberta La Starza
- University of Perugia, Department of Medicine, Hematology and Clinical Immunology, Perugia 06123, Italy
| | - Cristina Mecucci
- University of Perugia, Department of Medicine, Hematology and Clinical Immunology, Perugia 06123, Italy
| | - Kimberly Stegmaier
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; The Broad Institute, Cambridge, MA 02142, USA
| | - Franco Aversa
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy
| | - Donatella Stilli
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parma 43124, Italy
| | | | - Paolo Sportoletti
- University of Perugia, Department of Medicine, Hematology and Clinical Immunology, Perugia 06123, Italy
| | - Maike Bublitz
- University of Oxford, Department of Biochemistry, Oxford OX1 3QU, UK
| | | | - Giovanni Roti
- University of Parma, Department of Medicine and Surgery, Parma 43126, Italy.
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7
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Klees RL, Rastelli G, Cuevas JC, Belzig W. Microwave Spectroscopy Reveals the Quantum Geometric Tensor of Topological Josephson Matter. Phys Rev Lett 2020; 124:197002. [PMID: 32469576 DOI: 10.1103/physrevlett.124.197002] [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] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 11/13/2019] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Quantization effects due to topological invariants such as Chern numbers have become very relevant in many systems, yet key quantities such as the quantum geometric tensor providing local information about quantum states remain experimentally difficult to access. Recently, it has been shown that multiterminal Josephson junctions constitute an ideal platform to synthesize topological systems in a controlled manner. We theoretically study properties of Andreev states in topological Josephson matter and demonstrate that the quantum geometric tensor of Andreev states can be extracted by synthetically polarized microwaves. The oscillator strength of the absorption rates provides direct evidence of topological quantum properties of the Andreev states.
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Affiliation(s)
- R L Klees
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
| | - G Rastelli
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
- Zukunftskolleg, Universität Konstanz, D-78457 Konstanz, Germany
| | - J C Cuevas
- Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
| | - W Belzig
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
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8
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Cervellin G, Comelli I, Rastelli G, Sanchis-Gomar F, Negri F, De Luca C, Lippi G. Epidemiology and clinics of mushroom poisoning in Northern Italy: A 21-year retrospective analysis. Hum Exp Toxicol 2017; 37:697-703. [DOI: 10.1177/0960327117730882] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Limited information exists about epidemiology and management of mushroom poisoning. We analyzed and described epidemiology, clinical presentation, and clinical course of mushroom-poisoned patients admitted to emergency departments (EDs) of the Province of Parma, Italy. Methods: Data from the database of mycological service were matched with clinical information retrieved from hospitals’ database, from January 1, 1996 to December 31, 2016. Results: Mycologist consultation was obtained in 379/443 identified mushroom poisonings. A remarkable seasonality was found, with significant peak in autumn. Thanks to the collaboration, the implicated species could be identified in 397 cases (89.6%); 108 cases (24.4%) were due to edible mushrooms, Boletus edulis being the most represented (63 cases). Overall, 408 (92%) cases presented with gastrointestinal toxicity. Twenty cases of amatoxin poisoning were recorded (11 Amanita phalloides and 9 Lepiota brunneoincarnata). One liver transplantation was needed. We observed 13 cases of cholinergic toxicity and 2 cases of hallucinogenic toxicity. Finally, 46 cases were due to “mixed” toxicities, and a total of 69 needed hospitalization. Conclusions: Early identification and management of potentially life-threatening cases is challenging in the ED, so that a mycologist service on call is highly advisable, especially during periods characterized by the highest incidence of poisoning.
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Affiliation(s)
- G Cervellin
- Emergency Department, University Hospital of Parma, Parma, Italy
| | - I Comelli
- Emergency Department, University Hospital of Parma, Parma, Italy
| | - G Rastelli
- Emergency Department, Hospital of Fidenza, Fidenza, Parma, Italy
| | - F Sanchis-Gomar
- Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, NY, USA
| | - F Negri
- Mycological Consultation Service, Local Health Agency of Parma, Parma, Italy
| | - C De Luca
- Mycological Consultation Service, Local Health Agency of Parma, Parma, Italy
| | - G Lippi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
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9
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Anighoro A, Pinzi L, Marverti G, Bajorath J, Rastelli G. Heat shock protein 90 and serine/threonine kinase B-Raf inhibitors have overlapping chemical space. RSC Adv 2017. [DOI: 10.1039/c7ra05889f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
With the aid of computational design, we show that Hsp90 and B-Raf inhibitors have overlapping chemical space and we disclose the first-in-class dual inhibitors.
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Affiliation(s)
- A. Anighoro
- Department of Life Science Informatics
- B-IT
- LIMES Program Unit Chemical Biology and Medicinal Chemistry
- Rheinische Friedrich-Wilhelms-Universität
- D-53113 Bonn
| | - L. Pinzi
- Department of Life Sciences
- University of Modena and Reggio Emilia
- Modena
- Italy
| | - G. Marverti
- Department of Biomedical
- Metabolic and Neurosciences
- University of Modena and Reggio Emilia
- Modena
- Italy
| | - J. Bajorath
- Department of Life Science Informatics
- B-IT
- LIMES Program Unit Chemical Biology and Medicinal Chemistry
- Rheinische Friedrich-Wilhelms-Universität
- D-53113 Bonn
| | - G. Rastelli
- Department of Life Sciences
- University of Modena and Reggio Emilia
- Modena
- Italy
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10
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Stadler P, Belzig W, Rastelli G. Ground-State Cooling of a Mechanical Oscillator by Interference in Andreev Reflection. Phys Rev Lett 2016; 117:197202. [PMID: 27858451 DOI: 10.1103/physrevlett.117.197202] [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] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 05/05/2023]
Abstract
We study the ground-state cooling of a mechanical oscillator linearly coupled to the charge of a quantum dot inserted between a normal metal and a superconducting contact. Such a system can be realized, e.g., by a suspended carbon nanotube quantum dot with a capacitive coupling to a gate contact. Focusing on the subgap transport regime, we analyze the inelastic Andreev reflections which drive the resonator to a nonequilibrium state. For small coupling, we obtain that vibration-assisted reflections can occur through two distinct interference paths. The interference determines the ratio between the rates of absorption and emission of vibrational energy quanta. We show that ground-state cooling of the mechanical oscillator can be achieved for many of the oscillator's modes simultaneously or for single modes selectively, depending on the experimentally tunable coupling to the superconductor.
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Affiliation(s)
- P Stadler
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
| | - W Belzig
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
| | - G Rastelli
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
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11
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Caiola E, Marabese M, Garassino M, Rastelli G, Settanni G, Brugnara S, Broggini M, Ganzinelli M. A new somatic mutation in the coding region of KRAS gene (G48A) found in a NSCLC patient. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61638-6] [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: 11/16/2022]
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12
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Stadler P, Belzig W, Rastelli G. Ground-state cooling of a carbon nanomechanical resonator by spin-polarized current. Phys Rev Lett 2014; 113:047201. [PMID: 25105648 DOI: 10.1103/physrevlett.113.047201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Indexed: 05/05/2023]
Abstract
We study the nonequilibrium steady state of a mechanical resonator in the quantum regime realized by a suspended carbon nanotube quantum dot in contact with two ferromagnets. Because of the spin-orbit interaction and/or an external magnetic field gradient, the spin on the dot couples directly to the flexural eigenmodes. Accordingly, the nanomechanical motion induces inelastic spin flips of the tunneling electrons. A spin-polarized current at finite bias voltage causes either heating or active cooling of the mechanical modes. We show that maximal cooling is achieved at resonant transport when the energy splitting between two dot levels of opposite spin equals the vibrational frequency. Even for weak electron-resonator coupling and moderate polarizations we can achieve ground-state cooling with a temperature of the leads, for instance, of T = 10 ω.
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Affiliation(s)
- P Stadler
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
| | - W Belzig
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany
| | - G Rastelli
- Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany and Zukunftskolleg, Universität Konstanz, D-78457 Konstanz, Germany
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13
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Parenti N, Rastelli G, Ferri C, Serventi V, Lazzari R, Sarli L. Reliability and validity of an Italian four-level emergency triage system. Crit Care 2012. [PMCID: PMC3363900 DOI: 10.1186/cc11089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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14
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Hulea IN, Fratini S, Xie H, Mulder CL, Iossad NN, Rastelli G, Ciuchi S, Morpurgo AF. Tunable Fröhlich polarons in organic single-crystal transistors. Nat Mater 2006; 5:982-6. [PMID: 17086169 DOI: 10.1038/nmat1774] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 09/27/2006] [Indexed: 05/12/2023]
Abstract
In organic field-effect transistors (FETs), charges move near the surface of an organic semiconductor, at the interface with a dielectric. In the past, the nature of the microscopic motion of charge carriers--which determines the device performance--has been related to the quality of the organic semiconductor. Recently, it was discovered that the nearby dielectric also has an unexpectedly strong influence. The mechanisms responsible for this influence are not understood. To investigate these mechanisms, we have studied transport through organic single-crystal FETs with different gate insulators. We find that the temperature dependence of the mobility evolves from metallic-like to insulating-like with increasing dielectric constant of the insulator. The phenomenon is accounted for by a two-dimensional Fröhlich polaron model that quantitatively describes our observations and shows that increasing the dielectric polarizability results in a crossover from the weak to the strong polaronic coupling regime. This represents a considerable step forward in our understanding of transport through organic transistors, and identifies a microscopic physical process with a large influence on device performance.
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Affiliation(s)
- I N Hulea
- Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
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15
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Pinna GA, Pirisi MA, Grella GE, Gherardini L, Mussinu JM, Paglietti G, Ferrari AM, Rastelli G. Synthesis and cytotoxicity of bis(benzo[g]indole-3-carboxamides) and related compounds. Arch Pharm (Weinheim) 2001; 334:337-44. [PMID: 11822170 DOI: 10.1002/1521-4184(200112)334:11<337::aid-ardp337>3.0.co;2-y] [Citation(s) in RCA: 7] [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: 11/07/2022]
Abstract
A series of bis(benzo[g]indoles) bridged by CX-(CH2)nN(Me)(CH2)n-CX (X = O, S, H2; n = 2,3) was synthesized as bifunctional antitumor agents and evaluated for cytotoxic activity against diverse human cancer cell lines by the National Cancer Institute. The parent compounds 2a,b exhibited a good level of activity and derivates 2c-g,i,k demonstrated significant inhibitory effects, all with IC50 values in the low micromolar range. The thioamide analogue 2j showed less potency. It is interesting to note that introduction of substituents on the benzene ring of the benzo[g]indole portion of 2a,b did not affect activity, with the only exception of the 7,8-dichloro derivative 2h which became less potent. One member of this series, 2i, was then tested in the hollow fiber cell assay to evaluate, in a preliminary fashion, its in vivo antineoplastic activity. Molecular modelling studies were performed on amide 2a and thioamide 2j to explain the loss of activity of 2j as to 2a. Finally, compound 2a behaved as a typical DNA intercalating agent, as judged from viscosity measurements with Poly(dA-dT)...poly(dA-dT).
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Affiliation(s)
- G A Pinna
- Dipartimento Farmaco Chimico Tossicologico, Università di Sassari, Via Muroni 23/A, 07100 Sassari, Italy.
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16
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Costantino L, Del Corso A, Rastelli G, Petrash JM, Mura U. 7-Hydroxy-2-substituted-4-H-1-benzopyran-4-one derivatives as aldose reductase inhibitors: a SAR study. Eur J Med Chem 2001; 36:697-703. [PMID: 11672879 DOI: 10.1016/s0223-5234(01)01272-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 10/27/2022]
Abstract
On the basis of the results of molecular modelling studies performed on the aldose reductase (ALR2) inhibitor 7-hydroxy-2-(4'-hydroxybenzyl)-4H-1-benzopyran-4-one (compound A) bound at the active site of the enzyme, we synthesised and tested on bovine and human ALR2 several derivatives modified at position 2 of the benzopyran moiety, in order to confirm the hypothesised binding mode of this compound. The substitution of the methylene bridge with the isosteric sulphur substituent gives an active derivative, while substitution with a polar NH causes a decrease in inhibitory activity; this is in accordance to the previously reported structure in which the methylene linker was found to be adjacent to a hydrophobic aminoacid (Leu300). Among the substituents at 4' position examined, the most favourable for inhibitory activity are those able to act as hydrogen bond donors, supporting the hypothesis of the importance of the interaction with Thr113 for the inhibition of the enzyme.
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Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Modena e Reggio Emilia University, Via Campi 183, I-41100 Modena, Italy.
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17
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Del Corso A, Costantino L, Rastelli G, Buono F, Mura U. Aldose reductase does catalyse the reduction of glyceraldehyde through a stoichiometric oxidation of NADPH. Exp Eye Res 2000; 71:515-21. [PMID: 11040087 DOI: 10.1006/exer.2000.0906] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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: 11/22/2022]
Abstract
In order to define the ability of bovine lens aldose reductase (ALR2) to generate polyols from aldoses, the quantitative determination of glycerol in the presence of glyceraldehyde was performed by gas chromatography after derivatization with trifluoroacetic anhydride. The proposed method appears to be useful in quantifying low amounts of glycerol in the presence of relatively high concentrations of glyceraldehyde and in following glycerol formation in enzyme assay conditions. The generation of one equivalent of glycerol in the presence of ALR2, is paralleled by the oxidation of one equivalent of NADPH. A similar result was obtained when S-glutathionyl-modified ALR2 was used, instead of the native enzyme, as a catalyst of glyceraldehyde reduction. Sorbinil, a classical ALR2 inhibitor, present in the enzyme assay mixture, inhibits to the same extent both NADPH oxidation and glycerol formation. The demonstration of the stoichiometric ratio of 1:1 occurring in the presence of bovine lens ALR2 between the synthesis of glycerol from D, L -glyceraldehyde and the oxidation of NADPH, rules out doubts concerning the ability of the enzyme to catalyse the reduction of aldoses to the corresponding polyalcohols. Possible autooxidation processes of glyceraldehyde, in the enzyme assay conditions, appear to be irrelevant with respect to the enzyme-catalysed reduction of the aldose. This would indicate that the spectrophotometric monitoring of NADPH oxidation at 340 nm, in the presence of ALR2, is a reliable method to assay the enzyme activity.
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Affiliation(s)
- A Del Corso
- Dipartimento di Fisiologia e Biochimica, Università di Pisa, Pisa, Italy
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18
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Costantino L, Rastelli G, Cignarella G, Barlocco D. Synthesis and aldose reductase inhibitory activity of a new series of benz[h]cinnolinone derivatives. Farmaco 2000; 55:544-52. [PMID: 11132732 DOI: 10.1016/s0014-827x(00)00035-5] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Following our previous studies on pyridazinone carboxylic acids as potent and selective aldose reductase (ALR2) inhibitors, a new series of benzo[h]cinnolinone carboxylic acids, variously substituted at the positions 4, 7-10 and differently modified both at the central ring and at the acidic side chain, were synthesized and tested as inhibitors of ALR2. Comparison with previously synthesized compounds allows us to define more precisely structure-activity relationships for this class of compounds. In fact, in addition to the importance of the acidic side chain, their properties are highly influenced by the substituents present on the benzo[h]cinnolinone nucleous, with potency ranging from that of Sorbinil to very weakly active compounds.
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Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Modena, Italy
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19
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Rastelli G, Sirawaraporn W, Sompornpisut P, Vilaivan T, Kamchonwongpaisan S, Quarrell R, Lowe G, Thebtaranonth Y, Yuthavong Y. Interaction of pyrimethamine, cycloguanil, WR99210 and their analogues with Plasmodium falciparum dihydrofolate reductase: structural basis of antifolate resistance. Bioorg Med Chem 2000; 8:1117-28. [PMID: 10882022 DOI: 10.1016/s0968-0896(00)00022-5] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.3] [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: 10/16/2022]
Abstract
The nature of the interactions between Plasmodium falciparum dihydrofolate reductase (pfDHFR) and antimalarial antifolates, i.e., pyrimethamine (Pyr), cycloguanil (Cyc) and WR99210 including some of their analogues, was investigated by molecular modeling in conjunction with the determination of the inhibition constants (Ki). A three-dimensional structural model of pfDHFR was constructed using multiple sequence alignment and homology modeling procedures, followed by extensive molecular dynamics calculations. Mutations at amino acid residues 16 and 108 known to be associated with antifolate resistance were introduced into the structure, and the interactions of the inhibitors with the enzymes were assessed by docking and molecular dynamics for both wild-type and mutant DHFRs. The Ki values of a number of analogues tested support the validity of the model. A 'steric constraint' hypothesis is proposed to explain the structural basis of the antifolate resistance.
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Affiliation(s)
- G Rastelli
- Dipartimento di Scienze Farmaceutiche, Universita di Modena e Reggio Emilia, Italy
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20
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Abstract
Aldose reductase (ALR2) is an enzyme involved in the development of long-term diabetic complications. In the search for aldose reductase inhibitors less acidic than carboxylic acids, phenolic compounds related to benzopyran-4-one and chalcone are particularly interesting because they possess good inhibitory properties. In order to investigate the similarities between these two classes of compounds and to provide a structural basis for their inhibition of ALR2, the existing structure-activity relationships were reconsidered. To this end, the acidity constants of a set of chalcones were measured and compared with those of benzopyran-4-one derivatives. Then, having established the relevant protonation state of these phenolics at physiological pH, a conformational analysis was performed on the most active benzopyran-4-one and chalcone derivatives and the results were compared with the crystal structures of some analogues. Finally, molecular docking of the most active chalcone into the ALR2 binding site was performed, and the structure of the enzyme-inhibitor complex was compared with that of the complex formed between ALR2 and a previously-obtained benzopyran-4-one derivative.
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Affiliation(s)
- G Rastelli
- Dipartimento di Scienze Farmaceutiche, Università di Modena e Reggio Emilia, Italy
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21
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Pinna GA, Curzu MM, Murineddu G, Chelucci G, Cignarella G, Menta E, Krell HW, Rastelli G, Ferrari AM. Preparation of thieno[3,2-h]cinnolinones as matrix metalloproteinase inhibitors. Arch Pharm (Weinheim) 2000; 333:37-47. [PMID: 10783516 DOI: 10.1002/(sici)1521-4184(200002)333:2/3<37::aid-ardp37>3.0.co;2-v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new series of thieno[3,2-h]cinnolinone analogues was synthesized which is structurally related to 2,3,4,4a,5,6-hexahydrothieno [3,2-h]cinnolin-3-one 1, a weak inhibitor of the matrix metalloproteinase MMP-8 (human neutrophil collagenase). Preliminary SAR studies have shown that while C4a-methyl, C7-acetylamino, C7 and C8-nitro substitution, and C4-C4a olefination provided no increase in activity relative to 1, C8-acetylamino substitution as in 5 and 8 was favourable. Moreover, to predict how the thieno[3,2-h]cinnolinone inhibitors might bind to MMP-8, the unsubstituted compound 9 was docked into the MMP-8 crystal structure. These studies revealed that inhibitor 9 does not seem to be able to coordinate the catalytically-active zinc ion but preferably interact with the peptide-binding region of the active site.
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Affiliation(s)
- G A Pinna
- Dipartimento Farmaco Chimico Tossicologico, Università di Sassari, Italy
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22
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Costantino L, Rastelli G, Gamberini MC, Giovannoni MP, Dal Piaz V, Vianello P, Barlocco D. Isoxazolo-[3,4-d]-pyridazin-7-(6H)-one as a potential substrate for new aldose reductase inhibitors. J Med Chem 1999; 42:1894-900. [PMID: 10354397 DOI: 10.1021/jm981107o] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [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: 11/29/2022]
Abstract
The isoxazolo-[3,4-d]-pyridazin-7-(6H)-one (2) and its corresponding open derivatives 5-acetyl-4-amino-(4-nitro)-6-substituted-3(2H)pyridazinones (3, 4) were used as simplified substrates for the synthesis of new aldose reductase inhibitors with respect to the previously reported 5, 6-dihydrobenzo[h]cinnolin-3(2H)one-2 acetic acids (1). Moreover, a few derivatives lacking the 5-acetyl group were prepared. Several compounds derived from 2 displayed inhibitory properties comparable to those of Sorbinil. In this class the presence at position 6 of a phenyl carrying an electron-withdrawing substituent proved to be beneficial, independently from its position on the ring (5g,j-l). Acetic acid derivatives were more effective than propionic and butyric analogues. On the contrary, all the monocyclic compounds (6-8) were either inactive or only weakly active. The 3-methyl-4-(p-chlorophenyl)isoxazolo-[3,4-d]-pyridazin-7-(6H )-one acetic acid (5g), which proved to be the most potent derivative, was also investigated in molecular modeling studies, to assess possible similarities in its interaction with the enzyme, with respect to the model 1.
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Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Via G. Campi 183, 41100 Modena, Italy
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23
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Costantino L, Rastelli G, Gamberini MC, Vinson JA, Bose P, Iannone A, Staffieri M, Antolini L, Del Corso A, Mura U, Albasini A. 1-Benzopyran-4-one antioxidants as aldose reductase inhibitors. J Med Chem 1999; 42:1881-93. [PMID: 10354396 DOI: 10.1021/jm980441h] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Starting from the inhibitory activity of the flavonoid Quercetin, a series of 4H-1-benzopyran-4-one derivatives was synthesized and tested for inhibition of aldose reductase, an enzyme involved in the appearance of diabetic complications. Some of the compounds obtained display inhibitory activity similar to that of Sorbinil but are more selective than Quercetin and Sorbinil with respect to the closely related enzyme, aldehyde reductase, and also possess antioxidant activity. Remarkably, these compounds possess higher pKa values than carboxylic acids, a characteristic which could make the pharmacokinetics of these compounds very interesting. Molecular modeling investigations on the structures of inhibitors bound at the active site of aldose reductase were performed in order to suggest how these new inhibitors might bind to the enzyme and also to interpret structure-activity relationships.
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Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Dipartimento di Scienze Biomediche, and Dipartimento di Chimica, Università di Modena, Via Campi 183, 41100 Modena, Italy
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24
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Abstract
AIMS The purpose of this study was to determine whether human platelet alpha2-adrenoceptors were altered in essential hypertension. A systematic analysis was carried out on 165 normotensives and 124 untreated primary hypertensives. METHODS The study was performed at different levels: i) density and affinity of platelet alpha2-adrenoceptors were determined by receptor binding assays using the full alpha2-adrenoceptor agonist [3H]-UK 14304 and a thermodynamic analysis of data was carried out to evaluate if binding mechanisms at the molecular level were altered during hypertension; ii) the functionality of Gi proteins coupled to alpha2-adrenoceptors and iii) forskolin-stimulated cAMP levels were measured. RESULTS Platelet alpha2-adrenoceptors mean density (Bmax) and affinity (Kd) (+/-s.e.mean) were significantly lower and higher, respectively, in normotensive than in hypertensive subjects [Bmax=327+/-4 vs 435+/-5 fmol mg(-1) of protein (P<0.01) and Kd=3.76+/-10.05 vs 6.50+/-0.15 nM (P<0.01), respectively]. The 50% stimulating concentration of adrenaline on [35S]-GTPgammaS binding to Gi proteins was significantly (P<0.01) lower in normotensives (12+/-2 nM) than in hypertensives (110+/-10 nM). The 50% inhibiting concentration of adrenaline on forskolin-stimulated cAMP levels was significantly (P<0.01) lower in normotensive (22+/-2 nM) than in hypertensive subjects (200+/-25 nM). CONCLUSIONS Present analysis, including receptorial and functional data, provides evidence that marked alterations occur in platelet alpha2-adrenoceptors of hypertensive subjects.
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Affiliation(s)
- K Varani
- Department of Clinical and Experimental Medicine, University of Ferrara, Italy
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25
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Abstract
Despite recent advances both in the chemistry and molecular pharmacology of antidiabetic drugs, diabetes still remains a life-threatening disease, which tends to spread all over the world. The clinical profile of diabetic subjects is often worsened by the presence of several long-term complications, namely neuropathy, nephropathy, retinopathy, and cataract. Several attempts have been made to prevent or at least to delay them. The most relevant are reported in this review, including the development of compounds acting as aldose reductase inhibitors, anti-advanced glycation end-product drugs, free radical scavengers, vasoactive agents, essential fatty acid supplementation, and neurotropic growth factors.
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Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Modena, Italy
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26
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Cecconi I, Moroni M, Vilardo PG, Dal Monte M, Borella P, Rastelli G, Costantino L, Garland D, Carper D, Petrash JM, Del Corso A, Mura U. Oxidative modification of aldose reductase induced by copper ion. Factors and conditions affecting the process. Biochemistry 1998; 37:14167-74. [PMID: 9760253 DOI: 10.1021/bi981159f] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bovine lens aldose reductase (ALR2) is inactivated by copper ion [Cu(II)] through an oxygen-independent oxidative modification process. A stoichiometry of 2 equiv of Cu(II)/enzyme mol is required to induce inactivation. While metal chelators such as EDTA or o-phenantroline prevent but do not reverse the ALR2 inactivation, DTT allows the enzyme activity to be rescued by inducing the recovery of the native enzyme form. The inactive enzyme form is characterized by the presence of 2 equiv of bound copper, at least one of which present as Cu(I), and by the presence of two lesser equivalents, with respect to the native enzyme, of reduced thiol residues. Data are presented which indicate that the Cu-induced protein modification responsible for the inactivation of ALR2 is the generation on the enzyme of an intramolecular disulfide bond. GSH significantly interferes with the Cu-dependent inactivation of ALR2 and induces, through its oxidation to GSSG, the generation of an enzyme form linked to a glutathionyl residue by a disulfide bond.
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Affiliation(s)
- I Cecconi
- Dipartimento di Fisiologia e Biochimica, Università di Pisa, Italy
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Plessi M, Bertelli D, Rastelli G, Albasini A, Monzani A. Fruits of ribes, rubus, vaccinium and prunus genus. Metal contents and genome. ACTA ACUST UNITED AC 1998. [DOI: 10.1007/s002160050902] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
This study reports a molecular dynamics (MD) investigation on the structure of aldose reductase (ALR2) complexed with the potent inhibitor tolrestat. The simulations predict four different orientations of tolrestat into the ALR2 binding site; these orientations have in common a strong interaction of the anionic carboxylate with Tyr48, His110, Trp111 and NADP+, but completely differ for the orientation of the aromatic portion of the inhibitor. Interestingly, the orientation in which tolrestat gives the most attractive interaction energy with the enzyme is in full accord with the x-ray crystal structure of the complex that has been reported in the literature after this work was completed. In addition, the suggestion of more than one orientation of tolrestat during MD is in agreement with recent electrospray mass spectrometry experiments on the ALR2-tolrestat complex.
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Affiliation(s)
- G Rastelli
- Dipartimento di Scienze Farmaceutiche, Modena, Italy.
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29
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Costantino L, Rastelli G, Albasini A. Natural polyhydroxylated compounds as inhibitors of xanthine oxidase. Pharmazie 1996; 51:994-5. [PMID: 8985991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Universita degli Studi di Modena, Italy
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Costantino L, Rastelli G, Vescovini K, Cignarella G, Vianello P, Del Corso A, Cappiello M, Mura U, Barlocco D. Synthesis, activity, and molecular modeling of a new series of tricyclic pyridazinones as selective aldose reductase inhibitors. J Med Chem 1996; 39:4396-405. [PMID: 8893834 DOI: 10.1021/jm960124f] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Three new series of tricyclic pyridazinones have been synthesized and tested in vitro in order to assess (i) their ability to inhibit aldose reductase enzyme (ALR2) and (ii) their specificity toward the target enzyme with respect to other related oxidoreductases, such as aldehyde reductase, sorbitol dehydrogenase, and glutathione reductase. The inhibitory capability of the most effective compounds (IC50 values ranging from 6.44 to 12.6 microM) appears to be associated with a rather significant specificity for ALR2. Molecular mechanics and molecular dynamic calculations performed on the ALR2-inhibitor complex give indications of specific interaction sites responsible for the binding, thus providing information for the design of new inhibitors with improved affinity for the enzyme.
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Ghelli S, Rastelli G, Barlocco D, Rinaldi M, Tondi D, Pecorari P, Costi MP. Conformational analysis of phthalein derivatives acting as thymidylate synthase inhibitors by means of 1H NMR and quantum chemical calculations. Bioorg Med Chem 1996; 4:1783-94. [PMID: 8931948 DOI: 10.1016/0968-0896(96)00193-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The conformations of a set of phthalein derivatives with bacterial thymidylate synthase (TS) inhibitory activity were investigated by 1H NMR spectra, performed at both room and low temperature, and by quantum chemical calculations. Since the crystal structure of the binary complex of phenolphthalein with the enzyme is known, we set out to study the conformation of various of its analogues in solution in order to observe the effects of the substituents on the phenolic rings, of the alpha-naphthol derivative and of the rigid analogue, fluorescein, and compare the results with the X-ray crystal structure studies. A relationship between the chemical shift of the proton on C4 (H4) of the phthalidic ring and the averaged angle formed by the phthalidic and the aromatic ring planes was found in which the most perpendicular conformations have the lowest H4 chemical shift values. At room temperature, the rotational freedom of all the studied compounds was similar, while at lower temperature the naphthol derivative assumed a partially blocked conformation. Finally, a qualitative relationship between the inhibitory properties of the compounds and their conformations is discussed.
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Affiliation(s)
- S Ghelli
- Dipartimento di Chimica, Universita di Modena, Italy
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Vescovi PP, Rastelli G, Volpi R, Chiodera P, Di Gennaro C, Coiro V. Circadian variations in plasma ACTH, cortisol and beta-endorphin levels in normal-weight bulimic women. Neuropsychobiology 1996; 33:71-5. [PMID: 8927231 DOI: 10.1159/000119252] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In order to establish possible alterations in the secretory patterns of adrenocorticotropic hormone (ACTH), cortisol and/or beta-endorphin in bulimia nervosa, the circadian fluctuations of these hormones were evaluated in blood samples taken at 1-hour intervals over 24 h. Eleven bulimic women with normal body weight and 8 weight- and age-matched normal controls were tested during the follicular phase (days 6-8) of normal menstrual cycles. All women were hospitalized for bulimia or for checkup examinations and were tested 3 days after hospital admission. Both normal and bulimic women showed maximal ACTH, cortisol and beta-endorphin levels at 08.00 h, with minimal ACTH and beta-endorphin levels at midnight and cortisol levels at 02.00 h. The general temporal structure of all hormonal secretions coincided in the two groups. However, whereas all measured ACTH/cortisol levels were quantitatively similar in the two groups, plasma beta-endorphin concentrations were significantly higher in bulimic than in control subjects at all examined time points. The enhancement in the overall 24-hour beta-endorphin secretion suggests the presence of an increased opioid tonus in bulimic women, which might play a role in the pathophysiology of the eating disorder.
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Affiliation(s)
- P P Vescovi
- Chair of Medical Clinic, University of Parma, Italy
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33
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Costantino L, Rastelli G, Albasini A. Anthocyanidines as inhibitors of xanthine oxidase. Pharmazie 1995; 50:573-4. [PMID: 7568325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- L Costantino
- Dipartimento di Scienze Farmaceutiche, Università di Modena, Italy
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Casti A, Orlandini G, Troglio MG, Bacciottini F, Michelini M, Maninetti L, Vezzani G, Rastelli G, Vescovi P. Acute and chronic hyperbaric oxygen exposure in humans: effects on blood polyamines, adrenocorticotropin and beta-endorphin. Acta Endocrinol (Copenh) 1993; 129:436-41. [PMID: 8279224 DOI: 10.1530/acta.0.1290436] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Plasma beta-endorphin, adrenocorticotropin (ACTH) and blood polyamine (spermidine and spermine) concentrations were evaluated in healthy adult male athletes undergoing hyperbaric oxygen exposure for 10 days (2.8 atm, 100% O2, 60 min daily). In the "acute phase", corresponding to the first day of treatment, and in the "acute in the chronic phase", corresponding to the values obtained on the 5th and 10th days after 60 min of hyperbaric O2, both ACTH and beta-endorphin levels increased significantly, whereas no variations were observed for polyamine concentrations. In the "chronic phase", corresponding to the basal values of the 5th and 10th days of treatment, we found a different pattern. In fact, the concentration of polyamines showed a remarkable enhancement, while ACTH and beta-endorphin levels remained unchanged. No significant variations were observed during hyperbarism with air. These results demonstrate different modifications of polyamines and beta-endorphin and ACTH in subjects submitted to hyperbaric oxygen exposure.
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Affiliation(s)
- A Casti
- Istituto di Chimica Biologica, Università di Parma, Italy
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Rastelli G, Costantino L, Albasini A. Physico-chemical properties of anthocyanidins. Part 1. Theoretical evaluation of the stability of the neutral and anionic tautomeric forms. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0166-1280(93)90063-h] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Vezzani G, Vescovi PP, Solari G, Stefanini P, Rastelli G. [Neuroendocrine changes in subjects undergoing hyperbaric treatment]. Minerva Anestesiol 1991; 57:952-3. [PMID: 1660113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- G Vezzani
- Servizio di Anestesia, Rianimazione e Terapia Iperbarica USL N 5 Fidenza
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Ceda GP, Denti L, Ceresini G, Rastelli G, Dotti C, Cavalieri S, Valenti G, Hoffman AR. Calcitonin inhibition of growth hormone-releasing hormone-induced GH secretion in normal men. Acta Endocrinol (Copenh) 1989; 120:416-22. [PMID: 2541589 DOI: 10.1530/acta.0.1200416] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Calcitonin has been shown to modulate pituitary hormone secretion in a variety of ways. In this study we examined the effects of a salmon calcitonin infusion on GHRH-induced GH secretion in 5 normal men. In addition, in vitro experiments were performed using primary cultures of rat anterior pituitary cells in order to examine whether there is a direct pituitary effect of CT. Infusion of CT significantly blunted the GH response to GHRH in all subjects without affecting basal GH secretion or plasma calcium levels. Infusion of CT was accompanied by significant increases in ACTH, beta-endorphin, cortisol and free fatty acid levels, and by a significant decrease in serum insulin levels. The addition of CT to primary cultures of rat pituitary cells did not alter basal or stimulated secretion of GH or ACTH. These results indicate that: 1) CT blunts the GH response to GHRH; 2) CT infusion results in the stimulation of the hypothalamic-pituitary-adrenal axis, and 3) this effect is probably exerted at the hypothalamic level, since no direct activity of CT was documented in vitro on either GH or ACTH secretion.
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Affiliation(s)
- G P Ceda
- Department of Gerontology and Geriatrics, University of Parma, G. Studard Hospital, Italy
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Rastelli G, Gerra G, Mineo F, Ceresini G, Baroni MC, Caccavari R, Delsignore R, Vescovi PP. [Homeostasis of blood glucose and abuse of exogenous opiates: evaluation of fructosamine and glycosylated hemoglobin]. Minerva Med 1987; 78:1291-6. [PMID: 3670683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The study was designed to assess glycaemic homeostasis in different situations of chronic stimulation of the opiate receptors by exogenous opiates. After an OGTT, levels of glycosylated haemoglobin (HbA1c) and serum fructosamine were measured in 3 groups of male drug addicts of comparable age. Group A consisted of 10 subjects undergoing substitution treatment with oral methadone. Group B consisted of 10 subjects addicted to intravenous injection of the syrup based methadone intended for oral administration. Group C consisted of 10 heroin addicts. Ten healthy subjects of the same age and sex were used as controls. Analysis of the results showed normal glucose tolerance in all groups with tendentially higher basal glycaemia levels in group B. HbA1c levels were significantly higher, though within normal limits, in group B than in either those receiving oral methadone (p less than 0.01) or the heroin addicts (p less than 0.01). The group B subjects also showed the highest fructosamine levels that were both well above normal limits and higher than those in the other groups in whom fructosamine levels were normal. The data therefore confirm normal glycaemia compensation in those taking oral methadone and in heroin addicts during the period considered. A new type of drug addiction involving the intravenous injection of methadone was also encountered. This produces an outstanding short-term change in glycaemic homeostasis and may well lead to future alterations in glucose tolerance.
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Affiliation(s)
- G Rastelli
- Università di Parma, Istituto di Clinica Medica Generale e Terapia Medica
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Ceresini G, Rastelli G, Ippolito L, Cipriani F, Gerra G, Vescovi PP. [Diabetes insipidus after selective pituitary adenomectomy. A case with late appearance]. Minerva Med 1987; 78:911-4. [PMID: 3601137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Diabetes insipidus is a well-known complication of hypophyseal surgery. The case is described of a women presenting with evident polyuropolydipsic syndrome arising 9 years after transphenoidal hypophyseal adenectomy. The diagnosis insipidus diabetes was secondary to intrasellar scars revealed by a hypophyseal CAT scan. The unusually long interval between surgery and the onset of the syndrome is emphasised.
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Gerra G, Ceresini G, Rastelli G, Butturini L, Vescovi PP. [Effect of diclofenac on the opiate withdrawal syndrome]. G Clin Med 1985; 66:459-65. [PMID: 3835090] [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: 01/07/2023]
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Valenti G, Vescovi PP, Gerra G, Rastelli G, Butturini U. Activation of PRL secretion by combined treatment with cyproterone acetate and ethinylestradiol. J Endocrinol Invest 1985; 8:269-72. [PMID: 3161934 DOI: 10.1007/bf03348492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Two groups of patients affected by idiopathic androgenization have been treated with ethinylestradiol (EE) associated with two different (high and low) dosages of cyproterone acetate (CA); the aim of this study was to evaluate the possible endocrine side effects at the pituitary level. After three and six months of treatment gonadotropins secretion appeared significantly inhibited with higher evidence for LH than for FSH and especially in the patients on high dose of CA. Nevertheless the most impressive finding was represented by the increase in PRL responses to TRH documented when higher doses of CA were employed without significant change in TSH secretion. The Authors suggest that such PRL hyperresponsiveness cannot be completely disregarded in the management of idiopathic androgenization.
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Rastelli G, Ceresini G, Gerra G, Vescovi PP. [Pseudohypoparathyroidism. A case complicated by reactive hypoglycemia]. Recenti Prog Med 1985; 76:309-12. [PMID: 4059626] [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: 01/08/2023]
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Vescovi PP, Pezzarossa A, Ceresini G, Rastelli G, Valenti G, Gerra G. Effects of dopamine receptor stimulation on opiate-induced modifications of pituitary-gonadal function. Horm Res 1985; 21:155-9. [PMID: 3997064 DOI: 10.1159/000180040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We evaluated the effects of the dopaminergic drug bromocriptine (Br) on prolactin (PRL), luteinizing hormone (LH) and testosterone (Te) levels in a homogeneous group of opiate addicts in a methadone maintenance program (20 mg twice daily). Basal blood levels of PRL, LH and Te were determined in 15 adult male drug addicts, before 30 and 60 days after Br administration (7.5 mg/day) was started. 15 healthy volunteers served as controls for the evaluation of basal values of the hormones. Before treatment PRL values were high, while LH and Te levels were lower than normal. 30 days later, PRL lowered significantly while LH and Te increased significantly. 60 days later, the blood hormone values were still significantly different from pretreatment values, and close to the normal range. This observation shows that Br, probably through an increase of dopaminergic tone, may counteract some effects of opiates on the hypothalamic-pituitary-gonadal axis.
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Abstract
The hypothalamus-pituitary-thyroid function was studied in 15 male patients on chronic methadone treatment (40 mg/day). No significant variations of TSH, T4, T3 and rT3 levels were documented, either in basal conditions or after TRH stimulation; however a reduced TSH pituitary response was recorded in some patients (6 out of 15).
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Rastelli G, Kirklin JW, Kincaid OW. Angiocardiography of persistent common atrioventricular canal. Mayo Clin Proc 1967; 42:200-9. [PMID: 6021842] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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49
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Rastelli G, Kirklin JW, Titus JL. Fate of papillary muscles after prosthetic replacement of mitral valve. Mayo Clin Proc 1967; 42:210-7. [PMID: 6021843] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Rastelli G, Kirklin JW, Titus JL. Anatomic observations on complete form of persistent common atrioventricular canal with special reference to atrioventricular valves. Mayo Clin Proc 1966; 41:296-308. [PMID: 5932615] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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