Meron-Sudai S, Reizis A, Goren S, Bialik A, Hochberg A, Cohen D. Pentraxin 3 and
Shigella LPS and IpaB Antibodies Interplay to Defeat Shigellosis.
J Clin Med 2022;
11:jcm11154384. [PMID:
35956001 PMCID:
PMC9368894 DOI:
10.3390/jcm11154384]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/19/2022] Open
Abstract
Shigella causes moderate to severe diarrhea or dysentery after invading the colon mucosa. Long Pentraxin 3 (PTX3) is recognized as the humoral component of the innate immune response to bacterial pathogens. We examined the interplay between levels of PTX3 and levels of anti-Shigella lipopolysaccharide (LPS) and anti-Shigella type 3 secretion system protein-IpaB antibodies in children during acute shigellosis and after recovery. PTX3 concentrations in serum and stool extracts were determined by sandwich ELISA using commercial anti-PTX3 antibodies. Serum IgG, IgM, and IgA anti-S. sonnei LPS or anti-S. sonnei IpaB were measured using in house ELISA. Children with acute shigellosis (n = 60) had elevated PTX3 levels in serum and stools as compared with recovered subjects (9.6 ng/mL versus 4.7 ng/mL, p < 0.009 in serum and 16.3 ng/g versus 1.1 ng/g in stool, p = 0.011). Very low levels of PTX3 were detected in stools of healthy children (0.3 ng/g). Increased serum levels of PTX3 correlated with high fever accompanied by bloody or numerous diarrheal stools characteristic of more severe shigellosis while short pentraxin; C-Reactive Protein (CRP) did not show such a correlation. PTX3 decreased in convalescence while anti-Shigella antibodies increased, switching the response from innate to adaptive toward the eradication of the invasive organism. These data can inform the development of Shigella vaccines and treatment options.
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