Expression of Toll-like receptors by neonatal leukocytes

Pallave Dasari, Heddy Zola, Ian Nicholson

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    The immune system of neonates is poorly developed; this increases the susceptibility of neonates to infection. For neonates to counter infection effectively, they first need to recognize the presence of pathogens. Toll-like receptors (TLR) are a family of pattern recognition receptors that alert the host to the presence of invading pathogens. To determine whether differences in TLR expression by leukocytes compensate for immunologic immaturity in neonates, TLR expression by monocytes and T lymphocytes from adults and neonates was compared. Expression of TLR1, TLR2, TLR3, TLR4, TLR8 and TLR9 by monocytes and T lymphocytes was detected with antibodies by flow cytometry. TLR1, TLR2, TLR3, TLR4, TLR8 and TLR9 expression by monocytes was detected in adults and neonates. TLR2, TLR3, TLR4, TLR8 and TLR9 expression by T lymphocytes was detected in adults and neonates. Monocytes and T lymphocytes from neonates are capable, like adults, of recognizing the presence of pathogens through TLR.

    Original languageEnglish
    Pages (from-to)221-228
    Number of pages8
    JournalPediatric Allergy and Immunology
    Volume22
    Issue number2
    DOIs
    Publication statusPublished - Mar 2011

    Keywords

    • Leukocytes
    • Monocytes
    • Neonates
    • T lymphocytes
    • Toll-like receptors

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