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Trezza A, Geminiani M, Cutrera G, Dreassi E, Frusciante L, Lamponi S, Spiga O, Santucci A. A Drug Discovery Approach to a Reveal Novel Antioxidant Natural Source: The Case of Chestnut Burr Biomass. Int J Mol Sci 2024; 25:2517. [PMID: 38473765 DOI: 10.3390/ijms25052517] [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: 01/18/2024] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Currently, many environmental and energy-related problems are threatening the future of our planet. In October 2022, the Worldmeter recorded the world population as 7.9 billion people, estimating that there will be an increase of 2 billion by 2057. The rapid growth of the population and the continuous increase in needs are causing worrying conditions, such as pollution, climate change, global warming, waste disposal, and natural resource reduction. Looking for novel and innovative methods to overcome these global troubles is a must for our common welfare. The circular bioeconomy represents a promising strategy to alleviate the current conditions using biomass-like natural wastes to replace commercial products that have a negative effect on our ecological footprint. Applying the circular bioeconomy concept, we propose an integrated in silico and in vitro approach to identify antioxidant bioactive compounds extracted from chestnut burrs (an agroforest waste) and their potential biological targets. Our study provides a novel and robust strategy developed within the circular bioeconomy concept aimed at target and drug discovery for a wide range of diseases. Our study could open new frontiers in the circular bioeconomy related to target and drug discovery, offering new ideas for sustainable scientific research aimed at identifying novel therapeutical strategies.
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Affiliation(s)
- Alfonso Trezza
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Michela Geminiani
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
- SienabioACTIVE, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Giuseppe Cutrera
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Elena Dreassi
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Luisa Frusciante
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Stefania Lamponi
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
- SienabioACTIVE, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
- SienabioACTIVE, University of Siena, Via A. Moro, 53100 Siena, Italy
| | - Annalisa Santucci
- Department of Biotechnology Chemistry & Pharmacy, University of Siena, Via A. Moro, 53100 Siena, Italy
- SienabioACTIVE, University of Siena, Via A. Moro, 53100 Siena, Italy
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Ahmed A, Trezza A, Gentile M, Paccagnini E, Panti A, Lupetti P, Spiga O, Bova S, Fusi F. Dynamin-independent Ca V1.2 and K Ca1.1 channels regulation and vascular tone modulation by the mitochondrial fission inhibitors dynasore and dyngo-4a. Eur J Pharmacol 2023; 951:175786. [PMID: 37179045 DOI: 10.1016/j.ejphar.2023.175786] [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: 01/02/2023] [Revised: 05/03/2023] [Accepted: 05/10/2023] [Indexed: 05/15/2023]
Abstract
A role for mitochondrial fission in vascular contraction has been proposed based on the vasorelaxant activity of the dynamin (and mitochondrial fission) inhibitors mdivi-1 and dynasore. However, mdivi-1 is capable to inhibit Ba2+ currents through CaV1.2 channels (IBa1.2), stimulate KCa1.1 channel currents (IKCa1.1), and modulate pathways key to the maintenance of vessel active tone in a dynamin-independent manner. Using a multidisciplinary approach, the present study demonstrates that dynasore, like mdivi-1, is a bi-functional vasodilator, blocking IBa1.2 and stimulating IKCa1.1 in rat tail artery myocytes, as well as promoting relaxation of rat aorta rings pre-contracted by either high K+ or phenylephrine. Conversely, its analogue dyngo-4a, though inhibiting mitochondrial fission triggered by phenylephrine and stimulating IKCa1.1, did not affect IBa1.2 but potentiated both high K+- and phenylephrine-induced contractions. Docking and molecular dynamics simulations identified the molecular basis supporting the different activity of dynasore and dyngo-4a at CaV1.2 and KCa1.1 channels. Mito-tempol only partially counteracted the effects of dynasore and dyngo-4a on phenylephrine-induced tone. In conclusion, the present data, along with previous observations (Ahmed et al., 2022) rise caution for the use of dynasore, mdivi-1, and dyngo-4a as tools to investigate the role of mitochondrial fission in vascular contraction: to this end, a selective dynamin inhibitor and/or a different experimental approach are needed.
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Affiliation(s)
- Amer Ahmed
- Dipartimento di Scienze della Vita, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Alfonso Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Mariangela Gentile
- Dipartimento di Scienze della Vita, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Eugenio Paccagnini
- Dipartimento di Scienze della Vita, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Alice Panti
- Dipartimento di Scienze della Vita, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Pietro Lupetti
- Dipartimento di Scienze della Vita, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Sergio Bova
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Fabio Fusi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, via A. Moro 2, 53100, Siena, Italy.
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Carullo G, Falbo F, Ahmed A, Trezza A, Gianibbi B, Nicolotti O, Campiani G, Aiello F, Saponara S, Fusi F. Artificial intelligence-driven identification of morin analogues acting as Ca V1.2 channel blockers: Synthesis and biological evaluation. Bioorg Chem 2023; 131:106326. [PMID: 36563413 DOI: 10.1016/j.bioorg.2022.106326] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 10/02/2022] [Revised: 12/02/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Morin is a vasorelaxant flavonoid, whose activity is ascribable to CaV1.2 channel blockade that, however, is weak as compared to that of clinically used therapeutic agents. A conventional strategy to circumvent this drawback is to synthesize new derivatives differently decorated and, in this context, morin-derivatives able to interact with CaV1.2 channels were found by employing the potential of PLATO in target fishing and reverse screening. Three different derivatives (5a-c) were selected as promising tools, synthesized, and investigated in in vitro functional studies using rat aorta rings and rat tail artery myocytes. 5a-c were found more effective vasorelaxant agents than the naturally occurring parent compound and antagonized both electro- and pharmaco-mechanical coupling in an endothelium-independent manner. 5a, the series' most potent, reduced also Ca2+ mobilization from intracellular store sites. Furthermore, 5a≈5c > 5b inhibited Ba2+ current through CaV1.2 channels. However, compound 5a caused also a concentration-dependent inhibition of KCa1.1 channel currents.
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Affiliation(s)
- Gabriele Carullo
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Federica Falbo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Ed. Polifunzionale, 87036, Rende (CS), Italy
| | - Amer Ahmed
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Beatrice Gianibbi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Orazio Nicolotti
- Department of Pharmacy- Drug Sciences, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Francesca Aiello
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Ed. Polifunzionale, 87036, Rende (CS), Italy.
| | - Simona Saponara
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
| | - Fabio Fusi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy
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Carullo G, Saponara S, Ahmed A, Gorelli B, Mazzotta S, Trezza A, Gianibbi B, Campiani G, Fusi F, Aiello F. Novel Labdane Diterpenes-Based Synthetic Derivatives: Identification of a Bifunctional Vasodilator That Inhibits Ca V1.2 and Stimulates K Ca1.1 Channels. Mar Drugs 2022; 20:md20080515. [PMID: 36005518 PMCID: PMC9410420 DOI: 10.3390/md20080515] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/30/2022] [Accepted: 08/11/2022] [Indexed: 11/26/2022] Open
Abstract
Sesquiterpenes such as leucodin and the labdane-type diterpene manool are natural compounds endowed with remarkably in vitro vasorelaxant and in vivo hypotensive activities. Given their structural similarity with the sesquiterpene lactone (+)-sclareolide, this molecule was selected as a scaffold to develop novel vasoactive agents. Functional, electrophysiology, and molecular dynamics studies were performed. The opening of the five-member lactone ring in the (+)-sclareolide provided a series of labdane-based small molecules, promoting a significant in vitro vasorelaxant effect. Electrophysiology data identified 7 as a CaV1.2 channel blocker and a KCa1.1 channel stimulator. These activities were also confirmed in the intact vascular tissue. The significant antagonism caused by the CaV1.2 channel agonist Bay K 8644 suggested that 7 might interact with the dihydropyridine binding site. Docking and molecular dynamic simulations provided the molecular basis of the CaV1.2 channel blockade and KCa1.1 channel stimulation produced by 7. Finally, 7 reduced coronary perfusion pressure and heart rate, while prolonging conduction and refractoriness of the atrioventricular node, likely because of its Ca2+ antagonism. Taken together, these data indicate that the labdane scaffold represents a valuable starting point for the development of new vasorelaxant agents endowed with negative chronotropic properties and targeting key pathways involved in the pathophysiology of hypertension and ischemic cardiomyopathy.
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Affiliation(s)
- Gabriele Carullo
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Simona Saponara
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Amer Ahmed
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Beatrice Gorelli
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Sarah Mazzotta
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milano, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Beatrice Gianibbi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Fabio Fusi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
- Correspondence: (F.F.); (F.A.)
| | - Francesca Aiello
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Edif. Polifunzionale, 87036 Arcavacata di Rende, Italy
- Correspondence: (F.F.); (F.A.)
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Trabalzini L, Ercoli J, Trezza A, Schiavo I, Macrì G, Moglia A, Spiga O, Finetti F. Pharmacological and In Silico Analysis of Oat Avenanthramides as EGFR Inhibitors: Effects on EGF-Induced Lung Cancer Cell Growth and Migration. Int J Mol Sci 2022; 23:ijms23158534. [PMID: 35955669 PMCID: PMC9369115 DOI: 10.3390/ijms23158534] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 02/05/2023] Open
Abstract
Avena sativa L. is a wholegrain cereal and an important edible crop. Oats possesses high nutritional and health promoting values and contains high levels of bioactive compounds, including a group of phenolic amides, named avenanthramides (Avns), exerting antioxidant, anti-inflammatory, and anticancer activities. Epidermal growth factor receptor (EGFR) represents one of the most known oncogenes and it is frequently up-regulated or mutated in human cancers. The oncogenic effects of EGFR include enhanced cell growth, angiogenesis, and metastasis, and down-regulation or inhibition of EGFR signaling has therapeutic benefit. Front-line EGFR tyrosine kinase inhibitor therapy is the standard therapy for patients with EGFR-mutated lung cancer. However, the clinical effects of EGFR inhibition may be lost after a few months of treatment due to the onset of resistance. Here, we showed the anticancer activity of Avns, focusing on EGFR activation and signaling pathway. Lung cancer cellular models have been used to evaluate the activity of Avns on tumor growth, migration, EMT, and anoikis induced by EGF. In addition, docking and molecular dynamics simulations showed that the Avns bind with high affinity to a region in the vicinity of αC-helix and the DGF motif of EGFR, jeopardizing the target biological function. Altogether, our results reveal a new pharmacological activity of Avns as EGFR tyrosine kinase inhibitors.
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Affiliation(s)
- Lorenza Trabalzini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
- Correspondence: (L.T.); (F.F.)
| | - Jasmine Ercoli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
| | - Irene Schiavo
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
| | - Giulia Macrì
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
| | - Andrea Moglia
- Department of Agriculture, Forest and Food Sciences, Plant Genetics and Breeding, University of Torino, 10095 Torino, Italy;
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
| | - Federica Finetti
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (J.E.); (A.T.); (I.S.); (G.M.); (O.S.)
- Correspondence: (L.T.); (F.F.)
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Ahmed A, Trezza A, Gentile M, Paccagnini E, Lupetti P, Spiga O, Bova S, Fusi F. The drp-1-mediated mitochondrial fission inhibitor mdivi-1 impacts the function of ion channels and pathways underpinning vascular smooth muscle tone. Biochem Pharmacol 2022; 203:115205. [DOI: 10.1016/j.bcp.2022.115205] [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] [Received: 04/29/2022] [Revised: 07/07/2022] [Accepted: 08/02/2022] [Indexed: 11/24/2022]
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7
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Cuong NM, Son NT, Nhan NT, Fukuyama Y, Ahmed A, Saponara S, Trezza A, Gianibbi B, Vigni G, Spiga O, Fusi F. Vietnamese Dalbergia tonkinensis: A Promising Source of Mono- and Bifunctional Vasodilators. Molecules 2022; 27:molecules27144505. [PMID: 35889386 PMCID: PMC9324545 DOI: 10.3390/molecules27144505] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
Hypertension is a risk factor for cardiovascular diseases, which are the main cause of morbidity and mortality in the world. In the search for new molecules capable of targeting KCa1.1 and CaV1.2 channels, the expression of which is altered in hypertension, the in vitro vascular effects of a series of flavonoids extracted from the heartwoods, roots, and leaves of Dalbergia tonkinensis Prain, widely used in traditional medicine, were assessed. Rat aorta rings, tail artery myocytes, and docking and molecular dynamics simulations were used to analyse their effect on these channels. Formononetin, orobol, pinocembrin, and biochanin A showed a marked myorelaxant activity, particularly in rings stimulated by moderate rather than high KCl concentrations. Ba2+ currents through CaV1.2 channels (IBa1.2) were blocked in a concentration-dependent manner by sativanone, 3′-O-methylviolanone, pinocembrin, and biochanin A, while it was stimulated by ambocin. Sativanone, dalsissooside, and eriodictyol inhibited, while tectorigenin 7-O-[β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside], ambocin, butin, and biochanin A increased IKCa1.1. In silico analyses showed that biochanin A, sativanone, and pinocembrin bound with high affinity in target-sensing regions of both channels, providing insight into their potential mechanism of action. In conclusion, Dalbergia tonkinensis is a valuable source of mono- and bifunctional, vasoactive scaffolds for the development of novel antihypertensive drugs.
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Affiliation(s)
- Nguyen Manh Cuong
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi 122100, Vietnam
- Correspondence: (N.M.C.); (F.F.)
| | - Ninh The Son
- Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi 122100, Vietnam;
| | - Ngu Truong Nhan
- Faculty of Science and Technology, Tay Nguyen University, 567 Le Duan, Ea Tam, Buon Ma Thuot 630000, Vietnam;
| | - Yoshiyasu Fukuyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan;
| | - Amer Ahmed
- Dipartimento di Scienze della Vita, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.A.); (S.S.)
| | - Simona Saponara
- Dipartimento di Scienze della Vita, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.A.); (S.S.)
| | - Alfonso Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.T.); (B.G.); (G.V.); (O.S.)
| | - Beatrice Gianibbi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.T.); (B.G.); (G.V.); (O.S.)
| | - Ginevra Vigni
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.T.); (B.G.); (G.V.); (O.S.)
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.T.); (B.G.); (G.V.); (O.S.)
| | - Fabio Fusi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy; (A.T.); (B.G.); (G.V.); (O.S.)
- Correspondence: (N.M.C.); (F.F.)
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Bongini P, Niccolai N, Trezza A, Mangiavacchi G, Santucci A, Spiga O, Bianchini M, Gardini S. Structural Bioinformatic Survey of Protein-Small Molecule Interfaces Delineates the Role of Glycine in Surface Pocket Formation. IEEE/ACM Trans Comput Biol Bioinform 2022; 19:1881-1886. [PMID: 33095703 DOI: 10.1109/tcbb.2020.3033384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
With a structural bioinformatic approach, we have explored amino acid compositions at PISA defined interfaces between small molecules and proteins that are contained in an optimized subset of 11,351 PDB files. The use of a series of restrictions, to prevent redundancy and biases from interactions between amino acids with charged side chains and ions, yielded a final data set of 45,230 protein-small molecule interfaces. We have compared occurrences of natural amino acids in surface exposed regions and binding sites for all the proteins of our data set. From our structural bioinformatic survey, the most relevant signal arose from the unexpected Gly abundance at enzyme catalytic sites. This finding suggested that Gly must have a fundamental role in stabilizing concave protein surface moieties. Subsequently, we have tried to predict the effect of in silico Gly mutations in hen egg white lysozyme to optimize those conditions that can reshape the protein surface with the appearance of new pockets. Replacing amino acids having bulky side chains with Gly in specific protein regions seems a feasible way for designing proteins with additional surface pockets, which can alter protein surface dynamics, therefore, representing controllable switches for protein activity.
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Raza G, El Gawhary R, Trezza A, Capone L, Gentile P. SBRT planning ideas for spinal metastasis. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00380-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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10
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Raza G, Minniti G, Trezza A, Capone L, Gentile P. Our first experiences with Hyper Arc and Elements Multi Brain Metastases techniques. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00170-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Saponara S, Fusi F, Iovinelli D, Ahmed A, Trezza A, Spiga O, Sgaragli G, Valoti M. Flavonoids and hERG channels: Friends or foes? Eur J Pharmacol 2021; 899:174030. [PMID: 33727059 DOI: 10.1016/j.ejphar.2021.174030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 10/08/2020] [Revised: 02/28/2021] [Accepted: 03/11/2021] [Indexed: 01/24/2023]
Abstract
The cardiac action potential is regulated by several ion channels. Drugs capable to block these channels, in particular the human ether-à-go-go-related gene (hERG) channel, also known as KV11.1 channel, may lead to a potentially lethal ventricular tachyarrhythmia called "Torsades de Pointes". Thus, evaluation of the hERG channel off-target activity of novel chemical entities is nowadays required to safeguard patients as well as to avoid attrition in drug development. Flavonoids, a large class of natural compounds abundantly present in food, beverages, herbal medicines, and dietary food supplements, generally escape this assessment, though consumed in consistent amounts. Continuously growing evidence indicates that these compounds may interact with the hERG channel and block it. The present review, by examining numerous studies, summarizes the state-of-the-art in this field, describing the most significant examples of direct and indirect inhibition of the hERG channel current operated by flavonoids. A description of the molecular interactions between a few of these natural molecules and the Rattus norvegicus channel protein, achieved by an in silico approach, is also presented.
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Affiliation(s)
- Simona Saponara
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Fabio Fusi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy.
| | - Daniele Iovinelli
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Amer Ahmed
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Alfonso Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - Giampietro Sgaragli
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy; Accademia Italiana della Vite e del Vino, via Logge degli Uffizi Corti 1, 50122, Florence, Italy
| | - Massimo Valoti
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
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Caciolla J, Picone G, Farruggia G, Valenti D, Rampa A, Malucelli E, Belluti F, Trezza A, Spiga O, Iotti S, Gobbi S, Cappadone C, Bisi A. Multifaceted activity of polyciclic MDR revertant agents in drug-resistant leukemic cells: Role of the spacer. Bioorg Chem 2020; 106:104460. [PMID: 33229118 DOI: 10.1016/j.bioorg.2020.104460] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022]
Abstract
A small library of derivatives carrying a polycyclic scaffold recently identified by us as a new privileged structure in medicinal chemistry was designed and synthesized, aiming at obtaining potent MDR reverting agents also endowed with antitumor properties. In particular, as a follow-up of our previous studies, attention was focused on the role of the spacer connecting the polycyclic core with a properly selected nitrogen-containing group. A relevant increase in reverting potency was observed, going from the previously employed but-2-ynyl- to a pent-3-ynylamino moiety, as in compounds 3d and 3e, while the introduction of a triazole ring proved to differently impact on the activity of the compounds. The docking results supported the data obtained by biological tests, showing, for the most active compounds, the ability to establish specific bonds with P-glycoprotein. Moreover, a multifaceted anticancer profile and dual in vitro activity was observed for all compounds, showing both revertant and antitumor effects on leukemic cells. In this respect, 3c emerged as a "triple-target" agent, endowed with a relevant reverting potency, a considerable antiproliferative activity and a collateral sensitivity profile.
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Affiliation(s)
- Jessica Caciolla
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Giovanna Picone
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy
| | - Giovanna Farruggia
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy; National Institute of Biostructures and Biosystems, Via delle Medaglie D'oro, 305, 00136 Roma, Italy
| | - Dario Valenti
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Angela Rampa
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Emil Malucelli
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy
| | - Federica Belluti
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena 53100, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena 53100, Italy
| | - Stefano Iotti
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy; National Institute of Biostructures and Biosystems, Via delle Medaglie D'oro, 305, 00136 Roma, Italy
| | - Silvia Gobbi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Concettina Cappadone
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via S. Donato 19/2, 40127 Bologna, Italy.
| | - Alessandra Bisi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
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13
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Benetti E, Tita R, Spiga O, Ciolfi A, Birolo G, Bruselles A, Doddato G, Giliberti A, Marconi C, Musacchia F, Pippucci T, Torella A, Trezza A, Valentino F, Baldassarri M, Brusco A, Asselta R, Bruttini M, Furini S, Seri M, Nigro V, Matullo G, Tartaglia M, Mari F, Renieri A, Pinto AM. ACE2 gene variants may underlie interindividual variability and susceptibility to COVID-19 in the Italian population. Eur J Hum Genet 2020; 28:1602-1614. [PMID: 32681121 PMCID: PMC7366459 DOI: 10.1038/s41431-020-0691-z] [Citation(s) in RCA: 205] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/01/2020] [Accepted: 06/30/2020] [Indexed: 11/17/2022] Open
Abstract
In December 2019, an initial cluster of interstitial bilateral pneumonia emerged in Wuhan, China. A human-to-human transmission was assumed and a previously unrecognized entity, termed coronavirus disease-19 (COVID-19) due to a novel coronavirus (SARS-CoV-2) was described. The infection has rapidly spread out all over the world and Italy has been the first European country experiencing the endemic wave with unexpected clinical severity in comparison with Asian countries. It has been shown that SARS-CoV-2 utilizes angiotensin converting enzyme 2 (ACE2) as host receptor and host proteases for cell surface binding and internalization. Thus, a predisposing genetic background can give reason for interindividual disease susceptibility and/or severity. Taking advantage of the Network of Italian Genomes (NIG), here we mined whole-exome sequencing data of 6930 Italian control individuals from five different centers looking for ACE2 variants. A number of variants with a potential impact on protein stability were identified. Among these, three more common missense changes, p.(Asn720Asp), p.(Lys26Arg), and p.(Gly211Arg) were predicted to interfere with protein structure and stabilization. Rare variants likely interfering with the internalization process, namely p.(Leu351Val) and p.(Pro389His), predicted to interfere with SARS-CoV-2 spike protein binding, were also observed. Comparison of ACE2 WES data between a cohort of 131 patients and 258 controls allowed identifying a statistically significant (P value < 0.029) higher allelic variability in controls compared with patients. These findings suggest that a predisposing genetic background may contribute to the observed interindividual clinical variability associated with COVID-19, allowing an evidence-based risk assessment leading to personalized preventive measures and therapeutic options.
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Affiliation(s)
- Elisa Benetti
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Rossella Tita
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Andrea Ciolfi
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Giovanni Birolo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Alessandro Bruselles
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | | | | | - Caterina Marconi
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | | | | | - Annalaura Torella
- Dipartimento di Medicina di Precisione, Università della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | | | | | - Alfredo Brusco
- Department of Medical Sciences, University of Turin, Turin, Italy
- Genetica Medica, Città della Salute e della Scienza, Torino, Italy
| | - Rosanna Asselta
- Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy
- Humanitas Clinical and Research Center-IRCCS, Rozzano, Milan, Italy
| | - Mirella Bruttini
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy
- Medical Genetics, University of Siena, Siena, Italy
| | - Simone Furini
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Marco Seri
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Sant'Orsola-Malpighi University Hospital, Bologna, Italy
| | - Vincenzo Nigro
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
- Dipartimento di Medicina di Precisione, Università della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Giuseppe Matullo
- Department of Medical Sciences, University of Turin, Turin, Italy
- Genetica Medica, Città della Salute e della Scienza, Torino, Italy
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Francesca Mari
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy
- Medical Genetics, University of Siena, Siena, Italy
| | - Alessandra Renieri
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy.
- Medical Genetics, University of Siena, Siena, Italy.
| | - Anna Maria Pinto
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy
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Carullo G, Ahmed A, Trezza A, Spiga O, Brizzi A, Saponara S, Fusi F, Aiello F. Design, synthesis and pharmacological evaluation of ester-based quercetin derivatives as selective vascular K Ca1.1 channel stimulators. Bioorg Chem 2020; 105:104404. [PMID: 33142229 DOI: 10.1016/j.bioorg.2020.104404] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 09/03/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 12/27/2022]
Abstract
Quercetin represents one of the most studied dietary flavonoids; it exerts a panel of pharmacological activities particularly on the cardiovascular system. Stimulation of vascular KCa1.1 channels contributes to its vasorelaxant activity, which is, however, counteracted in part by its concomitant stimulation of CaV1.2 channels. Therefore, several quercetin hybrid derivatives were designed and synthesized to produce a more selective KCa1.1 channel stimulator, then assessed both in silico and in vitro. All the derivatives interacted with the KCa1.1 channel with similar binding energy values. Among the selected derivatives, 1E was a weak vasodilator, though displaying an interesting CaV1.2 channel blocking activity. The lipoyl derivatives 1F and 3F, though showing pharmacological and electrophysiological features similar to those of quercetin, seemed to be more effective as KCa1.1 channel stimulators as compared to the parent compound. The strategy pursued demonstrated how different chemical substituents on the quercetin core can change/invert its effect on CaV1.2 channels or enhance its KCa1.1 channel stimulatory activity, thus opening new avenues for the synthesis of efficacious vasorelaxant quercetin hybrids.
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Affiliation(s)
- Gabriele Carullo
- Department of Pharmacy, Health and Nutritional Sciences, DoE 2018-2022, University of Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; Department of Biotechnology, Chemistry and Pharmacy, DoE 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Amer Ahmed
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, DoE 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, DoE 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Antonella Brizzi
- Department of Biotechnology, Chemistry and Pharmacy, DoE 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Simona Saponara
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy.
| | - Fabio Fusi
- Department of Biotechnology, Chemistry and Pharmacy, DoE 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy.
| | - Francesca Aiello
- Department of Pharmacy, Health and Nutritional Sciences, DoE 2018-2022, University of Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy
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15
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Fusi F, Mugnai P, Trezza A, Spiga O, Sgaragli G. Fine tuning by protein kinases of Ca V1.2 channel current in rat tail artery myocytes. Biochem Pharmacol 2020; 182:114263. [PMID: 33035505 DOI: 10.1016/j.bcp.2020.114263] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 11/26/2022]
Abstract
Seventeen compounds, rather selective, direct or indirect inhibitors and activators of PKA, PKG, and PKC, were analysed for effects on vascular CaV1.2 channel current (ICa1.2) by using the patch-clamp technique in single rat tail artery myocytes. The aim was to investigate how PKs regulate ICa1.2 and disclose any unexpected modulation of CaV1.2 channel function by these agents. The cAMP analogues 8-Br-cAMP and 6-Bnz-cAMP partially reduced ICa1.2 in dialysed cells, while weakly increasing it under the perforated configuration. The β-adrenoceptor agonist isoproterenol and the adenylate cyclase activator forskolin concentration-dependently increased ICa1.2; this effect was reversed by PKA inhibitors H-89 and KT5720, but not by PKI 6-22. The cGMP analogue 8-Br-cGMP, similarly to the NO-donor SNP, moderately reduced ICa1.2, this effect being reversed to a slight stimulation under the perforated configuration. Among PKG inhibitors, Rp-8-Br-PET-cGMPS decreased current amplitude in a concentration-dependent manner while Rp-8-Br-cGMPS was ineffective. The non-specific phosphodiesterase inhibitor IBMX increased ICa1.2, while H-89, KT5720, and PKI 6-22 antagonized this effect. The PKC activator PMA, but not the diacylglycerol analogue OAG, stimulated ICa1.2 in a concentration-dependent manner; conversely, the PKCα inhibitor Gö6976 markedly reduced basal ICa1.2 and, similarly to the PKCδ (rottlerin) and PKCε translocation inhibitors antagonised PMA-induced current stimulation. The ensemble of findings indicates that the stimulation of cAMP/PKA, in spite of the paradoxical effect of both 8-Br-cAMP and 6-Bnz-cAMP, or PKC pathways enhanced, while that of cGMP/PKG weakly inhibited ICa1.2 in rat tail artery myocytes. Since Rp-8-Br-PET-cGMPS and Gö6976 appeared to block directly CaV1.2 channel, their docking to the channel protein was investigated. Both compounds appeared to bind the α1C subunit in a region involved in CaV1.2 channel inactivation, forming an interaction network comparable to that of CaV1.2 channel blockers. Therefore, caution should accompany the use of these agents as pharmacological tools to elucidate the mechanism of action of drugs on vascular preparations.
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Affiliation(s)
- F Fusi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - P Mugnai
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - A Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - O Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - G Sgaragli
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
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16
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Fusi F, Trezza A, Sgaragli G, Spiga O, Saponara S, Bova S. Ritanserin blocks Ca V1.2 channels in rat artery smooth muscles: electrophysiological, functional, and computational studies. Acta Pharmacol Sin 2020; 41:1158-1166. [PMID: 32132658 PMCID: PMC7608335 DOI: 10.1038/s41401-020-0370-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/19/2020] [Indexed: 12/14/2022] Open
Abstract
CaV1.2 channel blockers or 5-HT2 receptor antagonists constitute effective therapy for Raynaud’s syndrome. A functional link between the inhibition of 5-HT2 receptors and CaV1.2 channel blockade in arterial smooth muscles has been hypothesized. Therefore, the effects of ritanserin, a nonselective 5-HT2 receptor antagonist, on vascular CaV1.2 channels were investigated through electrophysiological, functional, and computational studies. Ritanserin blocked CaV1.2 channel currents (ICa1.2) in a concentration-dependent manner (Kr = 3.61 µM); ICa1.2 inhibition was antagonized by Bay K 8644 and partially reverted upon washout. Conversely, the ritanserin analog ketanserin (100 µM) inhibited ICa1.2 by ~50%. Ritanserin concentration-dependently shifted the voltage dependence of the steady-state inactivation curve to more negative potentials (Ki = 1.58 µM) without affecting the slope of inactivation and the activation curve, and decreased ICa1.2 progressively during repetitive (1 Hz) step depolarizations (use-dependent block). The addition of ritanserin caused the contraction of single myocytes not yet dialyzed with the conventional method. Furthermore, in depolarized rings, ritanserin, and to a lesser extent, ketanserin, caused a concentration-dependent relaxation, which was antagonized by Bay K 8644. Ritanserin and ketanserin were docked at a region of the CaV1.2 α1C subunit nearby that of Bay K 8644; however, only ritanserin and Bay K 8644 formed a hydrogen bond with key residue Tyr-1489. In conclusion, ritanserin caused in vitro vasodilation, accomplished through the blockade of CaV1.2 channels, which was achieved preferentially in the inactivated and/or resting state of the channel. This novel activity encourages the development of ritanserin derivatives for their potential use in the treatment of Raynaud’s syndrome.
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Trezza A, Iovinelli D, Santucci A, Prischi F, Spiga O. An integrated drug repurposing strategy for the rapid identification of potential SARS-CoV-2 viral inhibitors. Sci Rep 2020; 10:13866. [PMID: 32807895 PMCID: PMC7431416 DOI: 10.1038/s41598-020-70863-9] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/31/2020] [Indexed: 12/23/2022] Open
Abstract
The Coronavirus disease 2019 (COVID-19) is an infectious disease caused by the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). The virus has rapidly spread in humans, causing the ongoing Coronavirus pandemic. Recent studies have shown that, similarly to SARS-CoV, SARS-CoV-2 utilises the Spike glycoprotein on the envelope to recognise and bind the human receptor ACE2. This event initiates the fusion of viral and host cell membranes and then the viral entry into the host cell. Despite several ongoing clinical studies, there are currently no approved vaccines or drugs that specifically target SARS-CoV-2. Until an effective vaccine is available, repurposing FDA approved drugs could significantly shorten the time and reduce the cost compared to de novo drug discovery. In this study we attempted to overcome the limitation of in silico virtual screening by applying a robust in silico drug repurposing strategy. We combined and integrated docking simulations, with molecular dynamics (MD), Supervised MD (SuMD) and Steered MD (SMD) simulations to identify a Spike protein - ACE2 interaction inhibitor. Our data showed that Simeprevir and Lumacaftor bind the receptor-binding domain of the Spike protein with high affinity and prevent ACE2 interaction.
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Affiliation(s)
- Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100, Siena, Italy
| | - Daniele Iovinelli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100, Siena, Italy
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100, Siena, Italy
| | - Filippo Prischi
- School of Life Sciences, University of Essex, Colchester, CO4 3SQ, UK.
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100, Siena, Italy.
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18
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Bongini P, Trezza A, Bianchini M, Spiga O, Niccolai N. A possible strategy to fight COVID-19: Interfering with spike glycoprotein trimerization. Biochem Biophys Res Commun 2020; 528:35-38. [PMID: 32451080 PMCID: PMC7144664 DOI: 10.1016/j.bbrc.2020.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 12/27/2022]
Abstract
The recent release of COVID-19 spike glycoprotein allows detailed analysis of the structural features that are required for stabilizing the infective form of its quaternary assembly. Trying to disassemble the trimeric structure of COVID-19 spike glycoprotein, we analyzed single protomer surfaces searching for concave moieties that are located at the three protomer-protomer interfaces. The presence of some druggable pockets at these interfaces suggested that some of the available drugs in Drug Bank could destabilize the quaternary spike glycoprotein formation by binding to these pockets, therefore interfering with COVID-19 life cycle. The approach we propose here can be an additional strategy to fight against the deadly virus. Ligands of COVID-19 spike glycoprotein that we have predicted in the present computational investigation, might be the basis for new experimental studies in vitro and in vivo. Search for ligand binding sites in COVID-19 S glycoprotein protomeric interfaces. Structure based ligand selection for interfering to COVID-19 S glycoprotein assembly. Ligand-protomer docking simulation to find the best candidates for therapeutic use.
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Affiliation(s)
- Pietro Bongini
- Department of Information Engineering and Mathematics, University of Siena, Siena, 53100, Italy; Department of Information Engineering, University of Florence, Florence, 50139, Italy.
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, 53100, Italy.
| | - Monica Bianchini
- Department of Information Engineering and Mathematics, University of Siena, Siena, 53100, Italy.
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, 53100, Italy.
| | - Neri Niccolai
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, 53100, Italy; Le Ricerche Del BarLume Free Association, Monteroni D'Arbia, 53014, Italy.
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19
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Cuong NM, Son NT, Nhan NT, Khanh PN, Huong TT, Tram NTT, Sgaragli G, Ahmed A, Trezza A, Spiga O, Fusi F. Vasorelaxing Activity of R-(-)-3'-Hydroxy-2,4,5-trimethoxydalbergiquinol from Dalbergia tonkinensis: Involvement of Smooth Muscle CaV1.2 Channels. Planta Med 2020; 86:284-293. [PMID: 31994147 DOI: 10.1055/a-1099-2929] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Dalbergia species heartwood, widely used in traditional medicine to treat various cardiovascular diseases, might represent a rich source of vasoactive agents. In Vietnam, Dalbergia tonkinensis is an endemic tree. Therefore, the aim of the present work was to investigate the vascular activity of R-(-)-3'-hydroxy-2,4,5-trimethoxydalbergiquinol isolated from the heartwood of D. tonkinensis and to provide circular dichroism features of its R absolute configuration. The vascular effects of R-(-)-3'-hydroxy-2,4,5-trimethoxydalbergiquinol were assessed on the in vitro mechanical activity of rat aorta rings, under isometric conditions, and on whole-cell Ba2+ currents through CaV1.2 channels (IBa1.2) recorded in single, rat tail main artery myocytes by means of the patch-clamp technique. R-(-)-3'-Hydroxy-2,4,5-trimethoxydalbergiquinol showed concentration-dependent, vasorelaxant activity on both endothelium-deprived and endothelium intact rings precontracted with the α 1 receptor agonist phenylephrine. Neither the NO (nitric oxide) synthase inhibitor Nω-nitro-L-arginine methyl ester nor the cyclooxygenase inhibitor indomethacin affected its spasmolytic activity. R-(-)-3'-Hydroxy-2,4,5-trimethoxydalbergiquinol-induced vasorelaxation was antagonized by (S)-(-)-Bay K 8644 and unaffected by tetraethylammonium plus glibenclamide. In patch-clamp experiments, R-(-)-3'-hydroxy-2,4,5-trimethoxydalbergiquinol inhibited IBa1.2 in a concentration-dependent manner and significantly decreased the time constant of current inactivation. R-(-)-3'-Hydroxy-2,4,5-trimethoxydalbergiquinol likely stabilized the channel in its closed state, as suggested by molecular modelling and docking simulation to the CaV1.2 channel α 1c subunit. In conclusion, D. tonkinensis species may represent a source of agents potentially useful for the development of novel antihypertensive drugs.
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Affiliation(s)
- Nguyen Manh Cuong
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Ninh The Son
- Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Ngu Truong Nhan
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
- Department of Science and Technology, Tay Nguyen University, Daklak, Vietnam
| | - Pham Ngoc Khanh
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Tran Thu Huong
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Nguyen Thi Thu Tram
- Department of Chemistry, Faculty of Science, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam
| | - Giampietro Sgaragli
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Siena, Italy
| | - Amer Ahmed
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Siena, Italy
| | - Alfonso Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
| | - Fabio Fusi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
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20
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Spiga O, Cicaloni V, Fiorini C, Trezza A, Visibelli A, Millucci L, Bernardini G, Bernini A, Marzocchi B, Braconi D, Prischi F, Santucci A. Machine learning application for development of a data-driven predictive model able to investigate quality of life scores in a rare disease. Orphanet J Rare Dis 2020; 15:46. [PMID: 32050984 PMCID: PMC7017449 DOI: 10.1186/s13023-020-1305-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 07/26/2019] [Accepted: 01/14/2020] [Indexed: 01/11/2023] Open
Abstract
Background Alkaptonuria (AKU) is an ultra-rare autosomal recessive disease caused by a mutation in the homogentisate 1,2-dioxygenase (HGD) gene. One of the main obstacles in studying AKU, and other ultra-rare diseases, is the lack of a standardized methodology to assess disease severity or response to treatment. Quality of Life scores (QoL) are a reliable way to monitor patients’ clinical condition and health status. QoL scores allow to monitor the evolution of diseases and assess the suitability of treatments by taking into account patients’ symptoms, general health status and care satisfaction. However, more comprehensive tools to study a complex and multi-systemic disease like AKU are needed. In this study, a Machine Learning (ML) approach was implemented with the aim to perform a prediction of QoL scores based on clinical data deposited in the ApreciseKUre, an AKU- dedicated database. Method Data derived from 129 AKU patients have been firstly examined through a preliminary statistical analysis (Pearson correlation coefficient) to measure the linear correlation between 11 QoL scores. The variable importance in QoL scores prediction of 110 ApreciseKUre biomarkers has been then calculated using XGBoost, with K-nearest neighbours algorithm (k-NN) approach. Due to the limited number of data available, this model has been validated using surrogate data analysis. Results We identified a direct correlation of 6 (age, Serum Amyloid A, Chitotriosidase, Advanced Oxidation Protein Products, S-thiolated proteins and Body Mass Index) out of 110 biomarkers with the QoL health status, in particular with the KOOS (Knee injury and Osteoarthritis Outcome Score) symptoms (Relative Absolute Error (RAE) 0.25). The error distribution of surrogate-model (RAE 0.38) was unequivocally higher than the true-model one (RAE of 0.25), confirming the consistency of our dataset. Our data showed that inflammation, oxidative stress, amyloidosis and lifestyle of patients correlates with the QoL scores for physical status, while no correlation between the biomarkers and patients’ mental health was present (RAE 1.1). Conclusions This proof of principle study for rare diseases confirms the importance of database, allowing data management and analysis, which can be used to predict more effective treatments.
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Affiliation(s)
- Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy.
| | - Vittoria Cicaloni
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy.,Toscana Life Sciences Foundation, Siena, Italy
| | | | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
| | - Anna Visibelli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy.,Department of Information Engineering and Mathematics, University of Siena, Siena, Italy
| | - Lia Millucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
| | - Giulia Bernardini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
| | - Andrea Bernini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
| | - Barbara Marzocchi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy.,UOC Patologia Clinica, Azienda Ospedaliera Senese, Siena, Italy
| | - Daniela Braconi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
| | - Filippo Prischi
- School of Life Sciences, University of Essex, Colchester, CO4 3SQ, UK
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A., 53100, Siena, Italy
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21
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Fusi F, Trezza A, Tramaglino M, Sgaragli G, Saponara S, Spiga O. The beneficial health effects of flavonoids on the cardiovascular system: Focus on K+ channels. Pharmacol Res 2020; 152:104625. [DOI: 10.1016/j.phrs.2019.104625] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/14/2019] [Accepted: 12/31/2019] [Indexed: 01/17/2023]
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Cicaloni V, Trezza A, Pettini F, Spiga O. Applications of in Silico Methods for Design and Development of Drugs Targeting Protein-Protein Interactions. Curr Top Med Chem 2019; 19:534-554. [PMID: 30836920 DOI: 10.2174/1568026619666190304153901] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 01/02/2019] [Accepted: 01/25/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Identification of Protein-Protein Interactions (PPIs) is a major challenge in modern molecular biology and biochemistry research, due to the unquestionable role of proteins in cells, biological process and pathological states. Over the past decade, the PPIs have evolved from being considered a highly challenging field of research to being investigated and examined as targets for pharmacological intervention. OBJECTIVE Comprehension of protein interactions is crucial to known how proteins come together to build signalling pathways, to carry out their functions, or to cause diseases, when deregulated. Multiplicity and great amount of PPIs structures offer a huge number of new and potential targets for the treatment of different diseases. METHODS Computational techniques are becoming predominant in PPIs studies for their effectiveness, flexibility, accuracy and cost. As a matter of fact, there are effective in silico approaches which are able to identify PPIs and PPI site. Such methods for computational target prediction have been developed through molecular descriptors and data-mining procedures. RESULTS In this review, we present different types of interactions between protein-protein and the application of in silico methods for design and development of drugs targeting PPIs. We described computational approaches for the identification of possible targets on protein surface and to detect of stimulator/ inhibitor molecules. CONCLUSION A deeper study of the most recent bioinformatics methodologies for PPIs studies is vital for a better understanding of protein complexes and for discover new potential PPI modulators in therapeutic intervention.
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Affiliation(s)
- Vittoria Cicaloni
- Department of Biotechnology, Chemistry and Pharmacy (Dept. of Excellence 2018-2022), University of Siena, via A. Moro 2, 53100 Siena, Italy.,Toscana Life Sciences Foundation, via Fiorentina 1, 53100 Siena, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy (Dept. of Excellence 2018-2022), University of Siena, via A. Moro 2, 53100 Siena, Italy
| | - Francesco Pettini
- Department of Biotechnology, Chemistry and Pharmacy (Dept. of Excellence 2018-2022), University of Siena, via A. Moro 2, 53100 Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy (Dept. of Excellence 2018-2022), University of Siena, via A. Moro 2, 53100 Siena, Italy
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Saponara S, Fusi F, Spiga O, Trezza A, Hopkins B, Brimble MA, Rennison D, Bova S. The Selective Rat Toxicant Norbormide Blocks K ATP Channels in Smooth Muscle Cells But Not in Insulin-Secreting Cells. Front Pharmacol 2019; 10:598. [PMID: 31191321 PMCID: PMC6540933 DOI: 10.3389/fphar.2019.00598] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 05/09/2019] [Indexed: 12/02/2022] Open
Abstract
Norbormide is a toxicant selective for rats to which it induces a widespread vasoconstriction. In a recent paper, we hypothesized a role of ATP-sensitive potassium (KATP) channels in norbormide-induced vasoconstriction. The current study was undertaken to verify this hypothesis by comparing the effects of norbormide with those of glibenclamide, a known KATP channel blocker. The whole-cell patch-clamp method was used to record KATP currents in myocytes freshly isolated from the rat and mouse caudal artery and from the rat gastric fundus, as well as in insulin-secreting pancreatic beta cells (INS-1 cells). Smooth muscle contractile function was assessed on either rat caudal artery rings or gastric fundus strips. Molecular modeling and docking simulation to KATP channel proteins were investigated in silico. Both norbormide (a racemic mixture of endo and exo isomers) and glibenclamide inhibited KATP currents in rat and mouse caudal artery myocytes, as well as in gastric fundus smooth muscle cells. In rat INS-1 cells, only glibenclamide blocked KATP channels, whereas norbormide was ineffective. The inhibitory effect of norbormide in rat caudal artery myocytes was not stereo-specific as both the endo isomers (active as vasoconstrictor) and the exo isomers (inactive as vasoconstrictor) had similar inhibitory activity. In rat caudal artery rings, norbormide-induced contraction was partially reverted by the KATP channel opener pinacidil. Computational approaches indicated the SUR subunit of KATP channels as the binding site for norbormide. KATP channel inhibition may play a role in norbormide-induced vasoconstriction, but does not explain the species selectivity, tissue selectivity, and stereoselectivity of its constricting activity. The lack of effect in INS-1 cells suggests a potential selectivity of norbormide for smooth muscle KATP channels.
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Affiliation(s)
- Simona Saponara
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Fabio Fusi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Brian Hopkins
- Landcare Research, Lincoln, New Zealand.,School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - David Rennison
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Sergio Bova
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
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Dei S, Braconi L, Trezza A, Menicatti M, Contino M, Coronnello M, Chiaramonte N, Manetti D, Perrone MG, Romanelli MN, Udomtanakunchai C, Colabufo NA, Bartolucci G, Spiga O, Salerno M, Teodori E. Modulation of the spacer in N,N-bis(alkanol)amine aryl ester heterodimers led to the discovery of a series of highly potent P-glycoprotein-based multidrug resistance (MDR) modulators. Eur J Med Chem 2019; 172:71-94. [DOI: 10.1016/j.ejmech.2019.03.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 12/20/2022]
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25
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Khanh PN, Huong TT, Spiga O, Trezza A, Son NT, Cuong TD, Ha VT, Cuong NM. In silico screening of anthraquinones from Prismatomeris memecyloides as novel phosphodiesterase type-5 inhibitors (PDE-5Is). Rev Int Androl 2018; 16:147-158. [PMID: 30286869 DOI: 10.1016/j.androl.2017.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/20/2017] [Revised: 05/05/2017] [Accepted: 07/24/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Prismatomeris memecyloides Craib (Rubiaceae) is a medicinal plant traditionally used by ethnic minorities in Vietnam for the treatment of erectile dysfunction (ED). The aim of this study was to investigate the chemical compositions and screen in silico its possible inhibitory effect against PDE-5 which reduced cyclic guanosine-3',5'-monophosphate (cGMP) levels and indirectly caused the male ED. METHODS Separation of natural compounds were carried out on chromatographic column with silica gel or reversed phase materials, eluting with different solvent gradients. The structures of all isolated compounds were elucidated on the basis of spectroscopic data (HR-MS, 1D/2D-NMR). Docking simulation study of compound (1-7) was performed by using flexible side chains protocol based on Iterated Local Search Global Optimizer Algorithm of AutoDock/Vina v.1.1.2. Pharmacokinetic parameters and toxicity prediction were also calculated by appropriate softwares. RESULTS From the methanol extract of roots of P. memecyloides collected in Vietnam, seven compounds including four anthraquinone/one anthraquinone glycoside namely damnacanthal (1), lucidin-ω-methyl ether (2), 3-methylalizarin (3), rubiadin-3-methyl ether (4), and 1-O-methylrubiadin 3-O-primeveroside (5) along with two iridoid glucosides, asperulosidic acid (6) and aitchisonide A (7) were isolated. The molecular modeling results showed that 5 anthraquinone compounds possess the lowest binding energies to PDE-5. The anthraquinone glucoside 1-O-methylrubiadin 3-O-primeveroside (5) potentially inhibited PDE-5 similarly to commercial PDE-5Is sildenafil (SLD) and tadalafil (TLD). Calculated pharmacokinetic results like pIC50,pred; miLogP, TPSA, enzyme inhibitory of anthraquinone glucoside (5) were similar and even higher to those of the commercial PDE-5 inhibitors. Especially the predictive toxicity of 1-O-methylrubiadin 3-O-primeveroside (5) was even lower than those of SLD and TLD. CONCLUSION This is the first study to find a scientific-based evidence for the ethnic use of P. memecyloides as medicinal plant for the treatment of ED. The result indicates that the anthraquinones (damnacanthal (1), lucidin-ω-methyl ether (2), 3-methylalizarin (3) and rubiadin-3-methyl ether (4)), especially anthraquinone glycoside (1-O-methylrubiadin 3-O-primeveroside (5)) are compounds of potential novel drug class for the ED treatment.
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Affiliation(s)
- Pham Ngoc Khanh
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Tran Thu Huong
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacology, University of Siena, Italy
| | - Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacology, University of Siena, Italy
| | - Ninh The Son
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - To Dao Cuong
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Vu Thi Ha
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam
| | - Nguyen Manh Cuong
- Department of Bioactive Products, Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
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Trezza A, Cicaloni V, Porciatti P, Langella A, Fusi F, Saponara S, Spiga O. From in silico to in vitro: a trip to reveal flavonoid binding on the Rattus norvegicus Kir6.1 ATP-sensitive inward rectifier potassium channel. PeerJ 2018; 6:e4680. [PMID: 29736333 PMCID: PMC5936070 DOI: 10.7717/peerj.4680] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 09/21/2017] [Accepted: 04/09/2018] [Indexed: 12/18/2022] Open
Abstract
Background ATP-sensitive inward rectifier potassium channels (Kir), are a potassium channel family involved in many physiological processes. KATP dysfunctions are observed in several diseases such as hypoglycaemia, hyperinsulinemia, Prinzmetal angina–like symptoms, cardiovascular diseases. Methods A broader view of the KATP mechanism is needed in order to operate on their regulation, and in this work we clarify the structure of the Rattus norvegicus ATP-sensitive inward rectifier potassium channel 8 (Kir6.1), which has been obtained through a homology modelling procedure. Due to the medical use of flavonoids, a considerable increase in studies on their influence on human health has recently been observed, therefore our aim is to study, through computational methods, the three-dimensional (3D) conformation together with mechanism of action of Kir6.1 with three flavonoids. Results Computational analysis by performing molecular dynamics (MD) and docking simulation on rat 3D modelled structure have been completed, in its closed and open conformation state and in complex with Quercetin, 5-Hydroxyflavone and Rutin flavonoids. Our study showed that only Quercetin and 5-Hydroxyflavone were responsible for a significant down-regulation of the Kir6.1 activity, stabilising it in a closed conformation. This hypothesis was supported by in vitro experiments demonstrating that Quercetin and 5-Hydroxyflavone were capable to inhibit KATP currents of rat tail main artery myocytes recorded by the patch-clamp technique. Conclusion Combined methodological approaches, such as molecular modelling, docking and MD simulations of Kir6.1 channel, used to elucidate flavonoids intrinsic mechanism of action, are introduced, revealing a new potential druggable protein site.
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Affiliation(s)
- Alfonso Trezza
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Vittoria Cicaloni
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy.,Toscana Life Sciences Foundation, Siena, Italy
| | - Piera Porciatti
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Andrea Langella
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Fabio Fusi
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Simona Saponara
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
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Galvagni F, Nardi F, Spiga O, Trezza A, Tarticchio G, Pellicani R, Andreuzzi E, Caldi E, Toti P, Tosi GM, Santucci A, Iozzo RV, Mongiat M, Orlandini M. Dissecting the CD93-Multimerin 2 interaction involved in cell adhesion and migration of the activated endothelium. Matrix Biol 2017; 64:112-127. [DOI: 10.1016/j.matbio.2017.08.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/18/2017] [Accepted: 08/24/2017] [Indexed: 01/20/2023]
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Trezza A, Bernini A, Langella A, Ascher DB, Pires DEV, Sodi A, Passerini I, Pelo E, Rizzo S, Niccolai N, Spiga O. A Computational Approach From Gene to Structure Analysis of the Human ABCA4 Transporter Involved in Genetic Retinal Diseases. Invest Ophthalmol Vis Sci 2017; 58:5320-5328. [PMID: 29049734 DOI: 10.1167/iovs.17-22158] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose The aim of this article is to report the investigation of the structural features of ABCA4, a protein associated with a genetic retinal disease. A new database collecting knowledge of ABCA4 structure may facilitate predictions about the possible functional consequences of gene mutations observed in clinical practice. Methods In order to correlate structural and functional effects of the observed mutations, the structure of mouse P-glycoprotein was used as a template for homology modeling. The obtained structural information and genetic data are the basis of our relational database (ABCA4Database). Results Sequence variability among all ABCA4-deposited entries was calculated and reported as Shannon entropy score at the residue level. The three-dimensional model of ABCA4 structure was used to locate the spatial distribution of the observed variable regions. Our predictions from structural in silico tools were able to accurately link the functional effects of mutations to phenotype. The development of the ABCA4Database gathers all the available genetic and structural information, yielding a global view of the molecular basis of some retinal diseases. Conclusions ABCA4 modeled structure provides a molecular basis on which to analyze protein sequence mutations related to genetic retinal disease in order to predict the risk of retinal disease across all possible ABCA4 mutations. Additionally, our ABCA4 predicted structure is a good starting point for the creation of a new data analysis model, appropriate for precision medicine, in order to develop a deeper knowledge network of the disease and to improve the management of patients.
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Affiliation(s)
- Alfonso Trezza
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Andrea Bernini
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Andrea Langella
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - David B Ascher
- Department of Biochemistry and Molecular Biology, University of Melbourne, Bio21 Institute, Parkville, Australia
| | - Douglas E V Pires
- Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Andrea Sodi
- Department of Surgery and Translational Medicine, Eye Clinic, Careggi Teaching Hospital, Florence, Italy
| | - Ilaria Passerini
- Department of Laboratory Diagnosis, Genetic Diagnosis Service, Careggi Teaching Hospital, Florence, Italy
| | - Elisabetta Pelo
- Department of Laboratory Diagnosis, Genetic Diagnosis Service, Careggi Teaching Hospital, Florence, Italy
| | - Stanislao Rizzo
- Department of Surgery and Translational Medicine, Eye Clinic, Careggi Teaching Hospital, Florence, Italy
| | - Neri Niccolai
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
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Trezza A, Landi A, Grioni D, Pirillo D, Fiori L, Giussani C, Sganzerla EP. Adverse Effects and Surgical Complications in Pediatric Patients Undergoing Vagal Nerve Stimulation for Drug-Resistant Epilepsy. Acta Neurochir Suppl 2017; 124:43-47. [PMID: 28120051 DOI: 10.1007/978-3-319-39546-3_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Vagal nerve stimulation (VNS) is an effective treatment for drug-resistant epilepsy that is not suitable for resective surgery, both in adults and in children. Few reports describe the adverse effects and complications of VNS. The aim of our study was to present a series of 33 pediatric patients who underwent VNS for drug-resistant epilepsy and to discuss the adverse effects and complications through a review of the literature.The adverse effects of VNS are usually transient and are dependent on stimulation of the vagus and its efferent fibers; surgical complications of the procedure may be challenging and patients sometimes require further surgery; generally these complications affect VNS efficacy; in addition, hardware complications also have to be taken into account.In our experience and according to the literature, adverse effects and surgical and hardware complications are uncommon and can usually be managed definitely. Careful selection of patients, particularly from a respiratory and cardiac point of view, has to be done before surgery to limit the incidence of some adverse effects.
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Affiliation(s)
- A Trezza
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy.
| | - A Landi
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
| | - D Grioni
- Unit of Pediatric Neurophysiology, Child Neuropsychiatric Clinic, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
| | - D Pirillo
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
| | - L Fiori
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
| | - C Giussani
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
| | - E P Sganzerla
- Neurosurgery, Department of Surgery and Translational Medicine, Milan Center for Neuroscience, San Gerardo Hospital, University of Milano Bicocca, via Pergolesi 33, 20900, Monza, Italy
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Fusi F, Spiga O, Trezza A, Sgaragli G, Saponara S. The surge of flavonoids as novel, fine regulators of cardiovascular Ca v channels. Eur J Pharmacol 2016; 796:158-174. [PMID: 28012974 DOI: 10.1016/j.ejphar.2016.12.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [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: 09/01/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 01/28/2023]
Abstract
Ion channels underlie a wide variety of physiological processes that involve rapid changes in cell dynamics, such as cardiac and vascular smooth muscle contraction. Overexpression or dysfunction of these membrane proteins are the basis of many cardiovascular diseases that represent the leading cause of morbidity and mortality for human beings. In the last few years, flavonoids, widely distributed in the plant kingdom, have attracted the interest of many laboratories as an emerging class of fine ion, in particular Cav, channels modulators. Pieces of in vitro evidence for direct as well as indirect effects exerted by various flavonoids on ion channel currents are now accumulating in the scientific literature. This activity may be responsible, at least in part, for the beneficial and protective effects of dietary flavonoids toward cardiovascular diseases highlighted in several epidemiological studies. Here we examine numerous studies aimed at analysing this feature of flavonoids, focusing on the mechanisms that promote their sometimes controversial activities at cardiovascular Cav channels. New methodological approaches, such as molecular modelling and docking to Cav1.2 channel α1c subunit, used to elucidate flavonoids intrinsic mechanism of action, are introduced. Moreover, flavonoid-membrane interaction, bioavailability, and antioxidant activity are taken into account and discussed.
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Affiliation(s)
- Fabio Fusi
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy.
| | - Ottavia Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - Alfonso Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - Giampietro Sgaragli
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
| | - Simona Saponara
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, via A. Moro 2, 53100 Siena, Italy
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Trezza A, Landi A, Pirillo D, Antonini A, Sganzerla E. EP 9. GPi Deep Brain Stimulation for the treatment of status distonicus in tardive dystonia. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fusi F, Durante M, Spiga O, Trezza A, Frosini M, Floriddia E, Teodori E, Dei S, Saponara S. In vitro and in silico analysis of the vascular effects of asymmetrical N,N-bis(alkanol)amine aryl esters, novel multidrug resistance-reverting agents. Naunyn Schmiedebergs Arch Pharmacol 2016; 389:1033-43. [PMID: 27351883 DOI: 10.1007/s00210-016-1266-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 06/16/2016] [Indexed: 12/11/2022]
Abstract
Asymmetrical N,N-bis(alkanol)amine aryl esters (FRA77, GDE6, and GDE19) are potent multidrug resistance (MDR) reversers. Their structures loosely remind that of the Ca(2+) antagonist verapamil. Therefore, the aim of this study was to investigate their vascular activity in vitro. Their effects on the mechanical activity of fresh and cultured rat aorta rings on Cav1.2 channel current (I Ca1.2) of A7r5 cells and their cytotoxicity on A7r5 and EA.hy926 cells were analyzed. Docking at the rat α1C subunit of the Cav1.2 channel was simulated in silico. Compounds tested were cytotoxic at concentrations >1 μM (FRA77, GDE6, GDE19) and >10 μM (verapamil) in EA.hy926 cells, or >10 μM (FRA77, GDE6, GDE19) and at 100 μM (verapamil) in A7r5 cells. In fresh rings, the three compounds partly antagonized phenylephrine and 60 mM K(+) (K60)-induced contraction at concentrations ≥1 and ≥3 μM, respectively. On the contrary, verapamil fully relaxed rings pre-contracted with both agents. In cultured rings, 10 μM GDE6, GDE19, FRA77, and verapamil significantly reduced the contractile response to both phenylephrine and K60. Similarly to verapamil, the three compounds docked at the α1C subunit, interacting with the same amino acids residues. FRA77, GDE6, and GDE19 inhibited I Ca1.2 with IC50 values 1 order of magnitude higher than that of verapamil. FRA77-, GDE6-, and GDE19-induced vascular effects occurred at concentrations that are at least 1 order of magnitude higher than those effectively reverting MDR. Though an unambiguous divergence between MDR reverting and vascular activity is of overwhelming importance, these findings consistently contribute to the design and synthesis of novel and potent chemosensitizers.
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Affiliation(s)
- F Fusi
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via A. Moro 2, 53100, Siena, Italy
| | - M Durante
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via A. Moro 2, 53100, Siena, Italy
| | - O Spiga
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - A Trezza
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, via A. Moro 2, 53100, Siena, Italy
| | - M Frosini
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via A. Moro 2, 53100, Siena, Italy
| | - E Floriddia
- Dipartimento NEUROFARBA-Sezione di Farmaceutica e Nutraceutica, Università di Firenze, via Ugo Schiff 6, 50019, Sesto Fiorentino, Italy
| | - E Teodori
- Dipartimento NEUROFARBA-Sezione di Farmaceutica e Nutraceutica, Università di Firenze, via Ugo Schiff 6, 50019, Sesto Fiorentino, Italy
| | - S Dei
- Dipartimento NEUROFARBA-Sezione di Farmaceutica e Nutraceutica, Università di Firenze, via Ugo Schiff 6, 50019, Sesto Fiorentino, Italy
| | - S Saponara
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via A. Moro 2, 53100, Siena, Italy.
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Preda F, Cavandoli C, Lettieri C, Pilleri M, Antonini A, Eleopra R, Mondani M, Martinuzzi A, Sarubbo S, Ghisellini G, Trezza A, Cavallo MA, Landi A, Sensi M. Switching from constant voltage to constant current in deep brain stimulation: a multicenter experience of mixed implants for movement disorders. Eur J Neurol 2015; 23:190-5. [DOI: 10.1111/ene.12835] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 08/03/2015] [Indexed: 11/27/2022]
Affiliation(s)
- F. Preda
- Az. Ospedaliero-Universitaria Arcispedale Sant'Anna; Cona Ferrara Italy
| | | | - C. Lettieri
- Az. Ospedaliero-Universitaria Santa Maria della Misericordia - P. le Santa Maria della Misericordia; Udine Italy
| | - M. Pilleri
- IRCCS Ospedale San Camillo; Lido di Venezia Venezia Italy
| | - A. Antonini
- IRCCS Ospedale San Camillo; Lido di Venezia Venezia Italy
| | - R. Eleopra
- Az. Ospedaliero-Universitaria Santa Maria della Misericordia - P. le Santa Maria della Misericordia; Udine Italy
| | - M. Mondani
- Az. Ospedaliero-Universitaria Santa Maria della Misericordia - P. le Santa Maria della Misericordia; Udine Italy
| | - A. Martinuzzi
- IRCCS Eugenio Medea − Polo Scientifico di Conegliano/Pieve di Soligo; Pieve di Soligo TV Italy
| | - S. Sarubbo
- Presidio Ospedaliero S. Chiara; Trento Italy
| | - G. Ghisellini
- Az. Ospedaliero-Universitaria Arcispedale Sant'Anna; Cona Ferrara Italy
| | - A. Trezza
- Az. Ospedaliera San Gerardo; Monza Italy
| | - M. A. Cavallo
- Az. Ospedaliero-Universitaria Arcispedale Sant'Anna; Cona Ferrara Italy
| | - A. Landi
- Az. Ospedaliera San Gerardo; Monza Italy
| | - M. Sensi
- Az. Ospedaliero-Universitaria Arcispedale Sant'Anna; Cona Ferrara Italy
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