Autofluorescence spectrofluorometry of central nervous system (CNS) neuromediators. (Articolo in rivista)

Type
Label
  • Autofluorescence spectrofluorometry of central nervous system (CNS) neuromediators. (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • Crespi F, Croce AC, Fiorani S, Masala B, Heidbreder C, Bottiroli G. (2004)
    Autofluorescence spectrofluorometry of central nervous system (CNS) neuromediators.
    in Lasers in surgery and medicine (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Crespi F, Croce AC, Fiorani S, Masala B, Heidbreder C, Bottiroli G. (literal)
Pagina inizio
  • 39 (literal)
Pagina fine
  • 47 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 34 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Autofluorescence spectrofluorometry of central nervous system (CNS) neuromediators. (literal)
Abstract
  • BACKGROUND AND OBJECTIVES: Changes in the neurotransmitter 5-hydroxytriptamine (5-HT) are related to psychiatric diseases such as depression and anxiety. In this study, 5-HT autofluorescence properties were investigated in solution and in biological tissues. STUDY DESIGN/MATERIALS AND METHODS: Spectrofluorometric characterization was performed on ex vivo samples (tissue sections, homogenates) of the 5-HT-rich brain region hippocampus from rats untreated or treated to affect endogenous 5-HT levels; in vivo, with a 50 solidus in circle optic fiber probe positioned via stereotaxis. RESULTS: 5-HT exhibited minor excitation and emission bands at wavelengths longer than the well known excitation and emission bands in the UV region, 250-320 nm. Spectrofluorometric measurements under 366 nm excitation on homogenates supplied with 5-HT or belonging to treated rats revealed spectral alterations attributable to changes in the amount of 5-HT. Ex vivo and in vivo autofluorescence data were consistent with those obtained by conventional voltammetry. CONCLUSIONS: Autofluorescence spectroscopy potential is confirmed as a suitable technique for the direct measurement of neurotransmitters. Copyright 2004 Wiley-Liss, Inc. (literal)
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