High Levels of IgA Antibodies to Helicobacter Pylori among Omani Women during Pregnancy and after Delivery

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Abstract

BACKGROUND: Helicobacter pylori (H. pylori), is a common infection in pregnant women accompanied by variations in the levels of the IgM, IgA and IgG antibody isotypes. The variations of anti-H. pylori antibodies during and after pregnancy, and the extent of protection they provide to the mother and the fetus are not completely understood.

OBJECTIVES: To investigate the changes of the anti-H. pylori IgM, IgA and IgG levels in healthy Omani pregnant women during pregnancy and 3 months after delivery.

METHODS: Serum samples obtained from 70 Omani healthy pregnant women, with no history of autoimmune diseases, were tested for anti-H. pylori IgM, IgA and IgG in the first trimester of pregnancy and 3 months after delivery. In parallel and as a control group, sera obtained from a group of 70 healthy non-pregnant Omani women were tested. The levels of anti-H. pylori IgM, IgA and IgG were measured using standard Enzyme Linked Immunosorbent Assays (ELISAs).

RESULTS: Anti-H. pylori IgA levels were found to be significantly higher during pregnancy (p=0.046) and after delivery (p=0.02) when compared to the control group. Moreover, a significant increase in the levels of anti-H. pylori IgM, IgA and IgG was detected after delivery (p=0.002) when compared to the levels during pregnancy.

CONCLUSION: Pregnancy is associated with an increase in the levels of anti-H. pylori IgA antibodies. In addition, anti-H. pylori IgM, IgG and IgA antibody levels increase after delivery.

Original languageEnglish
Pages (from-to)114-123
Number of pages10
JournalIranian journal of immunology : IJI
Volume13
Issue number2
Publication statusPublished - Jun 1 2016

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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