HLA-G expression during hookworm infection in pregnant women.
Acta Trop
; 196: 52-59, 2019 Aug.
Article
em En
| MEDLINE
| ID: mdl-31078470
ABSTRACT
INTRODUCTION:
HLA-G plays a key role on immune tolerance. Pathogens can induce soluble HLA-G (sHLA-G) production to down-regulate the host immune response, creating a tolerogenic environment favorable for their dissemination. To our knowledge, no study has yet been conducted to assess the relationship between sHLA-G and geohelminth infections.METHODS:
The study was conducted in Allada, Southeastern Benin, from 2011-2014. The study population encompassed 400 pregnant women, included before the end of the 28th week of gestation and followed-up until delivery. At two antenatal care visits and at delivery, stool and blood samples were collected. Helminths were diagnosed by means of the Kato-Katz concentration technique. We used quantile regression to analyze the association between helminth infections and sHLA-G levels during pregnancy.RESULTS:
sHLA-G levels gradually increased during pregnancy and reached maximal levels at delivery. Prevalence of helminth infections was low, with a majority of hookworm infections. We found significantly more hookworm-infected women above the 80th quantile (Q80) of the distribution of the mean sHLA-G level (p < 0.03, multivariate quantile regression). Considering only women above the Q80 percentile, the mean sHLA-G level was significantly higher in hookworm-infected compared to uninfected women (p = 0.04).CONCLUSION:
High levels of sHLA-G were associated with hookworm infection in pregnant women. This result is consistent with the potential involvement of sHLA-G in immune tolerance induced by helminths during pregnancy.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Complicações Parasitárias na Gravidez
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Antígenos HLA-G
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Infecções por Uncinaria
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Pregnancy
País como assunto:
Africa
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article