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Feakins D, McCarthy PJ, O’Neill RD, Sheiha L, Waghorne WE. Transport of Water by Group 1 and 2 Ions with t-Butyl Alcohol as Reference Substance: Comparison with Raffinose and Dioxan. J SOLUTION CHEM 2014. [DOI: 10.1007/s10953-013-0035-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zain ZM, O’Neill RD, Lowry JP, Pierce KW, Tricklebank M, Dewa A, Ghani SA. Development of an implantable d-serine biosensor for in vivo monitoring using mammalian d-amino acid oxidase on a poly (o-phenylenediamine) and Nafion-modified platinum–iridium disk electrode. Biosens Bioelectron 2010; 25:1454-9. [DOI: 10.1016/j.bios.2009.10.049] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 10/29/2009] [Accepted: 10/29/2009] [Indexed: 10/20/2022]
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Calia G, Rocchitta G, Migheli R, Puggioni G, Spissu Y, Bazzu G, Mazzarello V, Lowry JP, O’Neill RD, Desole MS, Serra PA. Biotelemetric monitoring of brain neurochemistry in conscious rats using microsensors and biosensors. Sensors (Basel) 2009; 9:2511-23. [PMID: 22574029 PMCID: PMC3348796 DOI: 10.3390/s90402511] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 04/08/2009] [Accepted: 04/14/2009] [Indexed: 02/04/2023]
Abstract
In this study we present the real-time monitoring of three key brain neurochemical species in conscious rats using implantable amperometric electrodes interfaced to a biotelemetric device. The new system, derived from a previous design, was coupled with carbon-based microsensors and a platinum-based biosensor for the detection of ascorbic acid (AA), O2 and glucose in the striatum of untethered, freely-moving rats. The miniaturized device consisted of a single-supply sensor driver, a current-to-voltage converter, a microcontroller and a miniaturized data transmitter. The redox currents were digitized to digital values by means of an analog-to-digital converter integrated in a peripheral interface controller (PIC), and sent to a personal computer by means of a miniaturized AM transmitter. The electronics were calibrated and tested in vitro under different experimental conditions and exhibited high stability, low power consumption and good linear response in the nanoampere current range. The in-vivo results confirmed previously published observations on striatal AA, oxygen and glucose dynamics recorded in tethered rats. This approach, based on simple and inexpensive components, could be used as a rapid and reliable model for studying the effects of different drugs on brain neurochemical systems.
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Affiliation(s)
- Giammario Calia
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Gaia Rocchitta
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Rossana Migheli
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Giulia Puggioni
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Ylenia Spissu
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Gianfranco Bazzu
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Vittorio Mazzarello
- Department of Biomedical Sciences, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (V.M.)
| | - John P. Lowry
- Department of Chemistry, National University of Ireland, Maynooth, Co. Kildare, Ireland; E-Mail: (J.-P.L.)
| | - Robert D. O’Neill
- UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland; E-Mail: (R.-D.O.)
| | - Maria S. Desole
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
| | - Pier A. Serra
- Department of Neuroscience, Medical School, University of Sassari, Viale S. Pietro 43/b, 07100 Sassari, Italy; E-Mails: (G.C.); (G.R.); (R.M.); (G.P.); (Y.S.); (G.B.); (M.-S.D.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel. +39-079-228558; Fax: +39-079-228525
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Rothwell SA, Killoran SJ, Neville EM, Crotty AM, O’Neill RD. Poly(o-phenylenediamine) electrosynthesized in the absence of added background electrolyte provides a new permselectivity benchmark for biosensor applications. Electrochem commun 2008. [DOI: 10.1016/j.elecom.2008.05.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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