A rapid enzyme-linked immunosorbent assay with two modes of detection for measuring cytokine concentration.

Abstract:

:Interleukin (IL)-6 and IL-8 were measured in 101 serum samples collected from eight intensive-care unit patients using a polystyrene-based stick enzyme-linked immunosorbent assay (STICKELISA) system. This system consisted of an immobilized-antibody ELISA stick and a noncontact spectrophotometer. Cytokine concentration was detected by two ways: first, rapidly and semi-quantitatively by naked-eye observation of the color change and second, quantitatively using the spectrophotometer for accurate concentration determination. The spectrophotometric assay enabled the quantitation of as little as 100 pg/mL cytokine and took only 45 min to complete. There was a good agreement between the STICKELISA observations and data obtained using a plate ELISA system. The agreement between STICKELISA naked-eye observation and plate ELISA determination was 94 and 85% for IL-6 and IL-8, respectively. The correlation coefficients between the STICKELISA spectrophotometric determination and plate ELISA determination were 0.88 and 0.91 for IL-6 and IL-8, respectively, in a 0.1-5 ng/mL cytokine concentration range. These results demonstrate that the STICKELISA system is a simple, rapid, and quantitative method for bedside cytokine measurement in critical-care settings.

journal_name

J Clin Lab Anal

authors

Miwa K,Shibayama N,Moriguchi T,Goto J,Yanagisawa M,Yamazaki Y,Jung G,Matsuda K

doi

10.1002/jcla.20287

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

40-4

issue

1

eissn

0887-8013

issn

1098-2825

journal_volume

23

pub_type

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