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A combined micro-resonance Raman and absorption set-up enabling in vivo studies under varying physiological conditions: the nerve globin in the nerve cord of Aphrodite aculeata
Ramser, K.; Wenseleers, W.; Dewilde, S.; Van Doorslaer, S.; Moens, L.; Hanstorp, D. (2007). A combined micro-resonance Raman and absorption set-up enabling in vivo studies under varying physiological conditions: the nerve globin in the nerve cord of Aphrodite aculeata. Journal of Biochemical and Biophysical Methods 70(4): 627-633. dx.doi.org/10.1016/j.jbbm.2007.02.003
In: Journal of Biochemical and Biophysical Methods. Elsevier: Amsterdam. ISSN 0165-022x, more
Peer reviewed article  

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Keyword
    Marine
Author keywords
    micro-resonance Raman spectroscopy; absorption spectroscopy;microfluidic system; nerve globin; Aphrodite aculeata

Authors  Top 
  • Ramser, K.
  • Wenseleers, W.
  • Dewilde, S., more
  • Van Doorslaer, S.
  • Moens, L., more
  • Hanstorp, D.

Abstract
    We hereby report on the design of a set-up combining micro-resonance Raman and absorption spectroscopy with a microfluidic system. The set-up enabled us to study the nerve globin of Aphrodite aculeata in the functional isolated nerve cord under varying physiological conditions for extended periods of time. The oxygenation cycle of the organism was triggered by utilizing the microfluidic system that allowed for a fast switch between aerobic and anaerobic conditions. The nerve globin was found to very easily shift from a penta-coordinated high spin ferrous form to the oxy state upon a change from anaerobic to aerobic conditions. The observed fast reaction to varying O2 concentrations supports an oxygen-carrying and/or -storing function of the nerve globin. In addition, by combining resonance Raman and absorption spectroscopy, the physiological response could be distinguished from light-induced effects.

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