The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.

<h4>Background</h4>M. tuberculosis and helminth infection each affects one third of the world population. Helminth infections down regulate cell mediated immune responses and this may contribute to lower efficacy of BCG vaccination and higher prevalence of tuberculosis.<h4>Objectiv...

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Autores principales:	Dawit Gebreegziabiher, Kassu Desta, Girmay Desalegn, Rawleigh Howe, Markos Abebe
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8705cab512b34ca9b258eb8f116c04c8
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spelling	oai:doaj.org-article:8705cab512b34ca9b258eb8f116c04c82021-11-18T08:24:36ZThe effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.1932-620310.1371/journal.pone.0093429https://doaj.org/article/8705cab512b34ca9b258eb8f116c04c82014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24710174/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>M. tuberculosis and helminth infection each affects one third of the world population. Helminth infections down regulate cell mediated immune responses and this may contribute to lower efficacy of BCG vaccination and higher prevalence of tuberculosis.<h4>Objective</h4>To determine the effect of maternal helminth infection on maternal and neonatal immune function and immunity to TB.<h4>Methods</h4>In this cross sectional study, eighty five pregnant women were screened for parasitic and latent TB infections using Kato-Katz and QFT-GIT tests, respectively. IFN-γ and IL-4 ELISpot on Cord blood Mononuclear Cells, and total IgE and TB specific IgG ELISA on cord blood plasma was performed to investigate the possible effect of maternal helminth and/or latent TB co-infection on maternal and neonatal immune function and immunity to TB.<h4>Result</h4>The prevalence of helminth infections in pregnant women was 27% (n = 23), with Schistosoma mansoni the most common helminth species observed (20% of women were infected). Among the total of 85 study participants 25.8% were QFT-GIT positive and 17% had an indeterminate result. The mean total IgE value of cord blood was significantly higher in helminth positive than negative women (0.76 vs 0.47, p = 0.042). Cross placental transfer of TB specific IgG was significantly higher in helminth positive (21.9 ± 7.9) than negative (12.3 ± 5.1), p = 0.002) Latent TB Infection positive participants. The IFN-γ response of CBMCs to ESAT-6/CFP-10 cocktail (50 vs 116, p = 0.018) and PPD (58 vs 123, p = 0.02) was significantly lower in helminth positive than negative participants. There was no significant difference in IL-4 response of CBMCs between helminth negative and positive participants.<h4>Conclusions</h4>Maternal helminth infection had a significant association with the IFN-γ response of CBMCs, total IgE and cross placental transfer of TB specific IgG. Therefore, further studies should be conducted to determine the effect of these factors on neonatal immune response to BCG vaccination.Dawit GebreegziabiherKassu DestaGirmay DesalegnRawleigh HoweMarkos AbebePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e93429 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dawit Gebreegziabiher Kassu Desta Girmay Desalegn Rawleigh Howe Markos Abebe The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
description	<h4>Background</h4>M. tuberculosis and helminth infection each affects one third of the world population. Helminth infections down regulate cell mediated immune responses and this may contribute to lower efficacy of BCG vaccination and higher prevalence of tuberculosis.<h4>Objective</h4>To determine the effect of maternal helminth infection on maternal and neonatal immune function and immunity to TB.<h4>Methods</h4>In this cross sectional study, eighty five pregnant women were screened for parasitic and latent TB infections using Kato-Katz and QFT-GIT tests, respectively. IFN-γ and IL-4 ELISpot on Cord blood Mononuclear Cells, and total IgE and TB specific IgG ELISA on cord blood plasma was performed to investigate the possible effect of maternal helminth and/or latent TB co-infection on maternal and neonatal immune function and immunity to TB.<h4>Result</h4>The prevalence of helminth infections in pregnant women was 27% (n = 23), with Schistosoma mansoni the most common helminth species observed (20% of women were infected). Among the total of 85 study participants 25.8% were QFT-GIT positive and 17% had an indeterminate result. The mean total IgE value of cord blood was significantly higher in helminth positive than negative women (0.76 vs 0.47, p = 0.042). Cross placental transfer of TB specific IgG was significantly higher in helminth positive (21.9 ± 7.9) than negative (12.3 ± 5.1), p = 0.002) Latent TB Infection positive participants. The IFN-γ response of CBMCs to ESAT-6/CFP-10 cocktail (50 vs 116, p = 0.018) and PPD (58 vs 123, p = 0.02) was significantly lower in helminth positive than negative participants. There was no significant difference in IL-4 response of CBMCs between helminth negative and positive participants.<h4>Conclusions</h4>Maternal helminth infection had a significant association with the IFN-γ response of CBMCs, total IgE and cross placental transfer of TB specific IgG. Therefore, further studies should be conducted to determine the effect of these factors on neonatal immune response to BCG vaccination.
format	article
author	Dawit Gebreegziabiher Kassu Desta Girmay Desalegn Rawleigh Howe Markos Abebe
author_facet	Dawit Gebreegziabiher Kassu Desta Girmay Desalegn Rawleigh Howe Markos Abebe
author_sort	Dawit Gebreegziabiher
title	The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
title_short	The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
title_full	The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
title_fullStr	The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
title_full_unstemmed	The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
title_sort	effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/8705cab512b34ca9b258eb8f116c04c8
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The effect of maternal helminth infection on maternal and neonatal immune function and immunity to tuberculosis.

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