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Chemotactic factor-induced effects upon deformability of human polymorphonuclear leukocytes.

Authors
  • Kawaoka, E J
  • Miller, M E
  • Cheung, A T
Type
Published Article
Journal
Journal of Clinical Immunology
Publisher
Springer Nature
Publication Date
Jan 01, 1981
Volume
1
Issue
1
Pages
41–44
Identifiers
PMID: 7334069
Source
Medline
License
Unknown

Abstract

We have compared the effects of the synthetic chemotactic peptide, N-formyl-methionyl-leucyl-phenylalanine (f-Met-Leu-Phe), on the deformability and chemotaxis of human polymorphonuclear leukocytes (PMNs). By utilizing the technique of cell elastimetry (deformability), which measures the negative pressure required to aspirate cells into a micropipet, we have shown a correlation between f-Met-Leu-Phe concentrations and PMN deformability which parallels the effects of that chemoattractant on filter chemotaxis. At concentrations as low as 10(-11) M, a change in the deformability characteristics of a population of neutrophils was demonstrated. The increase in deformability became most marked at peptide concentrations in the range of 1-5 x 10(-9) M, corresponding to the optimal concentration range in the filter chemotaxis assay. Concentrations of 10(-8) M and greater were associated with a significant increase in the negative pressure required to aspirate the cells into a micropipet. Alterations in PMN deformability, therefore, occur as a natural consequence of stimulation of a human PMN with a chemotactic factor and may be a prerequisite to efficient movement.

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