PMID- 22753132 OWN - NLM STAT- MEDLINE DCOM- 20130718 LR - 20211021 IS - 1439-0973 (Electronic) IS - 0300-8126 (Linking) VI - 41 IP - 1 DP - 2013 Feb TI - Toll-like receptor-4 expression in infants with pertussis infection. PG - 195-8 LID - 10.1007/s15010-012-0288-8 [doi] AB - PURPOSE: Our aim was to evaluate the expression of Toll-like receptor-4 (TLR-4) and the level of interferon-gamma (IFN-gamma) and interleukin-10 (IL-10) in young infants infected by Bordetella pertussis and B. parapertussis. METHODS: Twenty-two infants under the age of 3.5 months with the clinical suspicion of pertussis were enrolled in the study. Nasopharyngeal secretions were obtained for laboratory testing, and blood samples were obtained for flow cytometry and cytokine level analysis. RESULTS: Six infants had positive PCR results for pertussis; the other 16 infants had infections attributable to another causal agent and were used as the control group. The mean fluorescence index, used as a measure of TLR-4 expression by monocytes, was significantly lower in infants with pertussis than in the control group infants (34.32 +/- 18.58 vs. 63.14 +/- 28, respectively; p = 0.041). The serum IFN-gamma level was also significantly lower in infants with pertussis than in the control group patients (0.41 +/- 0.58 vs. 1.36 +/- 1.87, respectively; p = 0.04). No differences were found in the levels of IL-10. CONCLUSIONS: Based on these results, we suggest that TL4 expression by monocytes and serum INF-gamma levels are lower in infants with positive PCR results for pertussis than in infants with a non-pertussis upper respiratory tract infection. FAU - Vadasz, Z AU - Vadasz Z AD - Division of Allergy and Clinical Immunology, Bnai Zion Medical Center, 47 Golomb Street, P.O. Box 4940, 31048, Haifa, Israel. FAU - Bamberger, E AU - Bamberger E FAU - Ben-Tikva, K AU - Ben-Tikva K FAU - Feterman, M AU - Feterman M FAU - Srugo, I AU - Srugo I FAU - Kessel, A AU - Kessel A LA - eng PT - Journal Article DEP - 20120703 PL - Germany TA - Infection JT - Infection JID - 0365307 RN - 0 (Toll-Like Receptor 4) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Bordetella parapertussis/genetics MH - Bordetella pertussis/genetics MH - Female MH - Humans MH - Infant MH - Infant, Newborn MH - Interferon-gamma/blood MH - Male MH - Monocytes/metabolism MH - Toll-Like Receptor 4/blood/*metabolism MH - Whooping Cough/blood/diagnosis/*metabolism EDAT- 2012/07/04 06:00 MHDA- 2013/07/19 06:00 CRDT- 2012/07/04 06:00 PHST- 2012/01/02 00:00 [received] PHST- 2012/06/15 00:00 [accepted] PHST- 2012/07/04 06:00 [entrez] PHST- 2012/07/04 06:00 [pubmed] PHST- 2013/07/19 06:00 [medline] AID - 10.1007/s15010-012-0288-8 [doi] PST - ppublish SO - Infection. 2013 Feb;41(1):195-8. doi: 10.1007/s15010-012-0288-8. Epub 2012 Jul 3.