Association between histo-blood group antigens and Pseudomonas aeruginosa-associated diarrheal diseases

Chih-Hsien Chuang1, Rajendra Prasad Janapatla2, Yi-Hsin Wang2

  • 1Department of Pediatrics, St. Paul's Hospital, Taoyuan, Taiwan; Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan; School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan.

Insights

Children with blood group A and the Lewis phenotype Le(a+b+) are more susceptible to Pseudomonas aeruginosa-associated diarrheal diseases. Infants exhibit a higher gut colonization rate of this bacterium compared to older children.

Area of Science:

  • Microbiology
  • Immunology
  • Genetics

Background:

  • Pseudomonas aeruginosa is an opportunistic pathogen, rarely causing enteric infections.
  • The role of human histo-blood group antigens (HBGAs) in P. aeruginosa enteric infections remains uninvestigated.

Purpose of the Study:

  • To investigate the association between HBGAs and P. aeruginosa-associated diarrheal diseases in children.
  • To determine P. aeruginosa gut colonization rates in different pediatric age groups.

Main Methods:

  • Collected stool samples from children to assess P. aeruginosa gut colonization.
  • Analyzed saliva samples from patients and healthy children for ABO blood group, FUT2 genotype, and Lewis phenotype (ELISA).

Main Results:

  • Infants showed a higher P. aeruginosa colonization rate (6.9%) than children aged 1-2 years (2.3%).
  • Blood group A (31.2% vs 17.6%) and Lewis phenotype Le(a+b+) (30.9% vs 16.2%) were significantly more prevalent in children with P. aeruginosa diarrhea.
  • No association was found between HBGA status and disease severity.

Conclusions:

  • Infants have a higher gut colonization rate of P. aeruginosa.
  • Children with blood group A and the Le(a+b+) phenotype are predisposed to P. aeruginosa-associated diarrheal diseases.
Abstract

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