Avoidance of photoactivation in the epifluorescence video microscopic observation of thrombosis

S. F A Hossiany, N. P. Desai, J. A. Hubbell

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Epifluorescence video microscopy is a valuable technique in the evaluation of the hemocompatilibity of biomaterials and has been used by several groups toward this end. The technique permits the observation of platelet and leukocyte interaction with materials which re in contact with whole human blood, either anticoagulated or native, under flow conditions of physiological relevance. The platelets, and other nonerythrocyte cells of the blood if desired, are labeled with a fluorophore. The potential for an experimental artifact due to photoactivation by the excitation light has recently been pointed out. Fluorescent dyes absorb at relatively short wavelengths, where the potential to interact destructively with proteins and cells is high. In this paper, we wish to describe conditions for use of this technique, as they have been practiced in this laboratory for several years, which avoid this potential for photoactivation. Furthermore, we wish to speculate and provide some evidence regarding the possible mechanism of the photoactivation event.

Original languageEnglish
Pages (from-to)1535-1542
Number of pages8
JournalJournal of Biomedical Materials Research
Volume26
Issue number11
DOIs
StatePublished - Nov 1 1992
Externally publishedYes

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Platelets
Blood
Fluorophores
Biocompatible Materials
Fluorescent Dyes
Biomaterials
Microscopic examination
Dyes
Cells
Proteins
Wavelength

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biomaterials

Cite this

Avoidance of photoactivation in the epifluorescence video microscopic observation of thrombosis. / Hossiany, S. F A; Desai, N. P.; Hubbell, J. A.

In: Journal of Biomedical Materials Research, Vol. 26, No. 11, 01.11.1992, p. 1535-1542.

Research output: Contribution to journalArticle

Hossiany, S. F A ; Desai, N. P. ; Hubbell, J. A. / Avoidance of photoactivation in the epifluorescence video microscopic observation of thrombosis. In: Journal of Biomedical Materials Research. 1992 ; Vol. 26, No. 11. pp. 1535-1542.
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