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Effect of Ascaris lumbricoides infection on T helper cell type 2 in rural Egyptian children

Authors Shalaby N, Shalaby N

Received 8 August 2015

Accepted for publication 17 November 2015

Published 9 March 2016 Volume 2016:12 Pages 379—385


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Professor Garry Walsh

Naglaa M Shalaby,1 Nehad M Shalaby2

1Department of Parasitology, Faculty of Medicine, 2Mansoura University Children Hospital, Mansoura University, Mansoura, Egypt

Abstract: Ascaris lumbricoides is a neglected parasite that induces changes in host immune response. This study is conducted to define the serum levels of tumor necrosis factor alpha (TNF-α), interleukin-4 (IL-4), and interleukin-5 (IL-5) in some Egyptian children and their relations to intensity of infection, age, and ascariasis symptoms. Stool samples were examined using formol-ether concentration and Kato-Katz thick smear techniques. Sera of 60 A. lumbricoides-infected children and 20 controls were tested by enzyme-linked immunosorbent assay. The mean sera concentrations of TNF-α, IL-4, and IL-5 were 7.41±2.5 pg/mL, 107.60±18.3 pg/mL, and 389.52±28.0 pg/mL, respectively. The controls had mean serum TNF-α 7.10±2.4 pg/mL, IL-4 25.49±2.6 pg/mL, and IL-5 88.76±22.7 pg/mL. The difference in the concentration of sera cytokines was statistically significant for IL-4 and IL-5 (P<0.01) between A. lumbricoides-infected children and controls. The intensity of infection correlated positively with IL-4 and IL-5 at r=0.959 and r=0.919, respectively. The concentrations of IL-4 and IL-5 correlated positively with the age at r=0.845 and r=0.934, respectively. Asthma and gastrointestinal tract upsets were correlated positively with IL-4 and IL-5. These data indicate that A. lumbricoides infection in our locality is associated with significantly high levels of IL-4 and IL-5.

Keywords: Ascaris lumbricoides, children, rural, Egypt, IL-4, IL-5, TNF-α

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