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Histo-Blood Group Antigens in Children with Symptomatic Rotavirus Infection
Raúl Pérez-Ortín1, Susana Vila-Vicent2, Noelia Carmona-Vicente3
1Department of Microbiology, School of Medicine, University of Valencia and Clinical Microbiology Service, Hospital Clínico Universitario de Valencia, Instituto de Investigación INCLIVA, 46010 Valencia, Spain. raul.perez@clinicalapau.es.
Insights
Histo-blood group antigens (HBGAs) influence rotavirus gastroenteritis susceptibility in children. Secretor-positive individuals and those with blood groups A or AB are more prone to symptomatic rotavirus P[8] infections.
Area of Science:
- Virology
- Immunology
- Genetics
Background:
- Group A rotaviruses are a leading cause of acute gastroenteritis in children globally.
- Rotavirus genotype prevalence varies geographically and is associated with human histo-blood group antigens (HBGAs).
Purpose of the Study:
- To investigate the association between HBGA profiles and rotavirus gastroenteritis in children in Valencia, Spain.
- To determine the role of secretor status, ABO blood group, and Lewis antigens in rotavirus infection susceptibility.
Main Methods:
- Collected stool and saliva samples from 133 children with rotavirus infection (2013-2015).
- Determined infecting rotavirus genotypes and HBGA phenotypes (secretor status, ABO, Lewis antigens).
- Compared patient data with control groups and blood donor data.
Main Results:
- Rotavirus G9P[8] was the most common strain (49.6%), followed by G1P[8] (20.3%) and G12P[8] (14.3%).
- Infected children were predominantly secretor-positive (99%) and Lewis b positive (91.7%).
- Children with blood group A and AB showed significantly higher susceptibility to rotavirus gastroenteritis compared to blood group O.
Conclusions:
- A specific HBGA genetic background is linked to rotavirus P[8] susceptibility.
- Symptomatic rotavirus P[8] infection is more frequent in secretor-positive (FUT2+) individuals.
- No significant differences in susceptibility were found between rotavirus G genotypes based on HBGA profiles.
Abstract:
Group A rotaviruses are a major cause of acute gastroenteritis in children. The diversity and unequal geographical prevalence of rotavirus genotypes have been linked to histo-blood group antigens (HBGAs) in different human populations. In order to evaluate the role of HBGAs in rotavirus infections in our population, secretor status (FUT2+), ABO blood group, and Lewis antigens were determined in children attended for rotavirus gastroenteritis in Valencia, Spain. During three consecutive years (2013-2015), stool and saliva samples were collected from 133 children with rotavirus infection. Infecting viral genotypes and HBGAs were determined in patients and compared to a control group and data from blood donors. Rotavirus G9P[8] was the most prevalent strain (49.6%), followed by G1P[8] (20.3%) and G12P[8] (14.3%). Rotavirus infected predominantly secretor (99%) and Lewis b positive (91.7%) children. Children with blood group A and AB were significantly more prone to rotavirus gastroenteritis than those with blood group O. Our results confirm that a HBGA genetic background is linked to rotavirus P[8] susceptibility. Rotavirus P[8] symptomatic infection is manifestly more frequent in secretor-positive (FUT2+) than in non-secretor individuals, although no differences between rotavirus G genotypes were found.
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