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Can expression of CD45RO, a T-cell surface molecule, be used to detect congenital infection?
1Department of Paediatrics and Neonatal Medicine, Royal Postgraduate Medical School, London, UK.
Exclusion or confirmation of congenital infection can be difficult in newborn infants. The presence of an infective organism in a fetus leads to activation of fetal T lymphocytes. We have examined expression of isoforms of a T-cell surface molecule, CD45RO, in 119 infants, 8 of whom had an intrauterine infection diagnosed antenatally. CD45RO was expressed on fewer than 10% of T cells in control infants and on more than 17% of T cells from infants with known infection (p < 0.006). This method allows screening of infants for infection by a range of organisms as a cause of their infection.
Exclusion or confirmation of congenital infection can be difficult in newborn infants. The presence of an infective organism in a fetus leads to activation of fetal T lymphocytes. We have examined expression of isoforms of a T-cell surface molecule, CD45RO, in 119 infants, 8 of whom had an intrauterine infection diagnosed antenatally. CD45RO was expressed on fewer than 10% of T cells in control infants and on more than 17% of T cells from infants with known infection (p < 0.006). This method allows screening of infants for infection by a range of organisms as a cause of their infection.
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