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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Time-resolved fluoroimmunoassay for pituitary adenylate cyclase activating polypeptide 27 (PACAP27) using europium (III) ion chelate labeled streptavidin-biotin complex.

Pituitary adenylate cyclase activating polypeptide (PACAP) is a novel peptide hormone and has a variety of biological action. In studies of the physiological behaviour of endogenous PACAP, the determination of PACAP levels in biological materials require a highly sensitive and specific method. Therefore, we developed a sensitive time-resolved fluoroimmunoassay (TR-FIA) for PACAP27 which is the biologically important fragment of PACAP. Accordingly, we developed TR-FIA using a biotinylated PACAP27 (b-PACAP27) as a tracer and europium (III) chelate labeled streptavidin-biotinylated bovine serum albumin complex as a detection of biotin on solid phase. A measurable range of PACAP27 was 7.8-1000 pg m1-1 by the proposed TR-FIA. For measurement of biological samples, the samples were purified to eliminate substances which interfered with the TR-FIA. The mean recovery of PACAP27 using commercially reversed phase column was 74.7% (n = 12). The various tissues, extracts and plasma concentrations of rat could be measured by the proposed TR-FIA.[1]

References

  1. Time-resolved fluoroimmunoassay for pituitary adenylate cyclase activating polypeptide 27 (PACAP27) using europium (III) ion chelate labeled streptavidin-biotin complex. Ito, K., Goto, T., Tsuji, A., Maeda, M. Journal of pharmaceutical and biomedical analysis. (1997) [Pubmed]
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