Neutrophils (polymorphonuclear leukocytes [PMNs]) from infants and adults increased in adherence over a 20-min incubation as measured in a morphological assay. At each time point, PMNs from healthy infants had significantly diminished adherence when compared with those of adults; PMNs from sick newborn infants showed intermediate adherence values. Moreover, PMNs from healthy infants had significantly diminished membrane fluorescence for fibronectin when compared with those of adults. Preincubation with exogenous fibronectin did not augment the adherence of PMNs from infants or adults. Deficient adherence of PMNs from newborns may be related to decreased membrane fibronectin.
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| http://dx.doi.org/10.1128/jcm.21.2.243-246.1985 | DOI Listing |
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