The Ser128Arg polymorphism for E-selectin gene and brucellosis.

Area of Science:

• Immunogenetics
• Infectious Disease Epidemiology
• Molecular Biology

Background:

• E-selectin, expressed on activated endothelial cells, is crucial for leukocyte recruitment in inflammation.
• A known A/C polymorphism (Ser128Arg) in the E-selectin gene affects its ligand-binding function.
• Understanding genetic predispositions to infectious diseases like brucellosis is vital.

Purpose of the Study:

• To investigate the association between E-selectin Ser128Arg polymorphism and brucellosis risk.
• To determine if this polymorphism correlates with disease progression in brucellosis patients.

Main Methods:

• A case-control study design was employed.
• Genomic DNA was extracted from 258 brucellosis patients and 193 healthy controls.
• Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was utilized to genotype the E-selectin Ser128Arg polymorphism.

Main Results:

• The Arg/Arg genotype frequency was significantly higher in brucellosis patients (13.6%) compared to controls (6.2%, P=0.03).
• An association between the Arg allele and brucellosis was observed in patients with disease onset less than 38 weeks (OR 1.9, P=0.01).
• These findings indicate a potential role for E-selectin genotype in brucellosis susceptibility.

Conclusions:

• The Arg/Arg genotype of the E-selectin gene polymorphism at codon 128 is suggested as a genetic factor influencing susceptibility to brucella infection.
• This polymorphism may play a role in determining an individual's risk for developing brucellosis.