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Sotgia S, Mangoni AA, Forteschi M, Murphy RB, Elliot D, Sotgiu E, Pintus G, Carru C, Zinellu A. Identification of the Main Intermediate Precursor of l-Ergothioneine Biosynthesis in Human Biological Specimens. Molecules 2016; 21:molecules21101298. [PMID: 27689978 PMCID: PMC6272924 DOI: 10.3390/molecules21101298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/10/2016] [Accepted: 09/23/2016] [Indexed: 12/26/2022] Open
Abstract
A capillary electrophoresis coupled to tandem mass spectrometry (CE–MS/MS) has been used to make a qualitative determination of hercynine—the main precursor of l-ergothioneine biosynthesis—in some key human biological specimens, such as urine, whole blood, plasma, and saliva. From semiquantitative analysis results, the highest concentrations of hercynine were detected in saliva and whole blood, whereas much lower concentrations were measured in urine and plasma. Whole blood was the biological matrix with the highest concentration of l-ergothioneine followed by plasma, saliva, and urine. The antioxidant effects attributed to l-ergothioneine, along with its peculiar antioxidant mechanism, offer a possible explanation for the presence of the hercynine, as well as its concentration, in the considered biological matrices.
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Affiliation(s)
- Salvatore Sotgia
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
| | - Arduino A Mangoni
- Department of Clinical Pharmacology, School of Medicine, Flinders University and Flinders Medical Centre, Adelaide SA 5042, Australia.
| | - Mauro Forteschi
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
| | - Rhys B Murphy
- Department of Clinical Pharmacology, School of Medicine, Flinders University and Flinders Medical Centre, Adelaide SA 5042, Australia.
| | - David Elliot
- Department of Clinical Pharmacology, School of Medicine, Flinders University and Flinders Medical Centre, Adelaide SA 5042, Australia.
| | - Elisabetta Sotgiu
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
| | - Gianfranco Pintus
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
- Department of Biomedical Sciences, College of Health Sciences, Qatar University, Doha 2713, Qatar.
| | - Ciriaco Carru
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
- Quality Control Unit, University Hospital Sassari (AOU), Sassari 07100, Italy.
| | - Angelo Zinellu
- Department of Biomedical Sciences, School of Medicine, University of Sassari, Sassari 07100, Italy.
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Computational approaches in the rational design of improved carbonyl quenchers: focus on histidine containing dipeptides. Future Med Chem 2016; 8:1721-37. [PMID: 27584013 DOI: 10.4155/fmc-2016-0088] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
AIM The inhibition of protein carbonylation can play therapeutic roles in several oxidative-based diseases and direct carbonyl quenching appears the most effective inhibition strategies. l-carnosine derivatives are effective and selective quenchers toward 4-hydroxy-2-nonenal even though their activity was never investigated in a fully comparable way. RESULTS The reported results revealed that anserine, homocarnosine and carnosinamide retain a remarkable quenching activity combined with a satisfactory selectivity. In silico analyses confirmed the key role of flexibility, lipophilicity and nucleophilicity parameters in rationalizing the measured reactivity. CONCLUSION This study confirms that in silico approaches can be successfully used in the rational design of improved carbonyl quenchers. Physicochemical and stereoelectronic descriptors appear really informative especially when explored by their corresponding property spaces.
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Percussion circuits and brain function – A hypothesis. Med Hypotheses 2014; 82:595-600. [DOI: 10.1016/j.mehy.2014.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 01/28/2014] [Accepted: 02/16/2014] [Indexed: 11/23/2022]
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Yáñez M, Mó O, Alkorta I, Elguero J. Can Conventional Bases and Unsaturated Hydrocarbons Be Converted into Gas-Phase Superacids That Are Stronger than Most of the Known Oxyacids? The Role of Beryllium Bonds. Chemistry 2013; 19:11637-43. [DOI: 10.1002/chem.201300808] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/30/2013] [Indexed: 11/08/2022]
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