Chemotactic and Bactericidal Capacities of Human Newborn Monocytes
- 1 October 1976
- journal article
- research article
- Published by The American Association of Immunologists in The Journal of Immunology
- Vol. 117 (4), 1303-1307
- https://doi.org/10.4049/jimmunol.117.4.1303
Abstract
We evaluated the chemotactic and bactericidal capacities of human cord blood monocytes, and the ability of cord lymphocytes and sera to generate chemotactic (LDCF) and opsonic factors for monocytes. Our results suggest that the intrinsic locomotive capacity, and the receptor system for LDCF, are adequately developed in the newborn monocyte. Moreover, newborn lymphocytes appear to produce adequate amounts of LDCF, capable of attracting adult monocytes. Poor chemotaxis was observed only when cord monocytes were exposed to supernatants of cord lymphocytes, which suggests that both contribute to this abnormal response. An inhibitory factor for which only cord monocytes have appropriate receptors, or a subtle difference in sensitivity of monocytes and strength of chemotactic factor between adults and newborns would explain these results. Bactericidal capacity of cord monocytes against Escherichia coli K-12 opsonized by either cord or adult serum was comparable to that of adult monocytes.This publication has 4 references indexed in Scilit:
- Defective Mononuclear Leukocyte Chemotaxis: A Previously Unrecognized Immune DysfunctionAnnals of Internal Medicine, 1973
- Blast transformation of lymphocytes from newborn human infantsThe Journal of Pediatrics, 1968
- HYPERSENSITIVITY IN NEWBORN GUINEA PIGSThe Journal of Experimental Medicine, 1962
- FAILURE OF PASSIVE TRANSFER OF DELAYED HYPERSENSITIVITY IN THE NEWBORN HUMAN INFANT1960