SERUM TOTAL BILIRUBIN, NOT CHOLELITHIASIS, IS INFLUENCED BY UGT1A1 POLYMORPHISM, ALPHA THALASSEMIA AND S GENOTYPE: FIRST REPORT ON COMPARISON BETWEEN ARAB-INDIAN AND AFRICAN S GENES

Said Y ALkindi, Anil Pathare, Salam Alkindi
  • Said Y ALkindi
    Affiliation not present
  • Anil Pathare
    Sultan Qaboos University, Oman
  • Salam Alkindi
    Alkindi, Department of Haematology, College of Medicine & Health Sciences, PO Box 35, PC 123, Muscat, Oman. email: sskindi@squ.edu.om, Oman | sskindi@squ.edu.om

Abstract

Background: We explored the potential relationship between steady state serum bilirubin levels and the incidence of cholelithiasis in the context of UGT1A1 gene A(TA)nTAA promoter polymorphism in Omani sickle cell anemia (SCA) patients, homozygotes for African (Benin and Bantu) and Arab-Indian bS haplotypes, but sharing the same microgeographical environment and comparable life style factors.

 

Methods: 136 SCA patients were retrospectively studied in whom imaging data including abdominal CT scan, MRI or Ultrasonography was routinely available. Available data on the mean steady state hematological/biochemical parameters (n=136),  bs haplotypes(n=136), a globin gene status (n=105) and UGT1A1 genotypes(n=133) were reviewed from the respective medical records.

 

Results: The mean serum total bilirubin level was significantly higher in the homozygous UGT1A1(AT)7 group as compared to  UGT1A1(AT)6 group. Strikingly, cholelithiasis was not influenced by age, gender, alpha globin genotype or bS haplotypes in this SCA cohort.

 

Conclusion: As observed in other population groups, the UGT1A1 (AT)7 homozygosity was significantly associated with raised serum total bilirubin level, but the prevalence of gallstones in the Omani SCA patients was not associated with a thalassaemia, UGT1A1 polymorphism, or bs haplotypes.

 

Keywords

UGT1A1, Cholelithiasis, Gallstones, hyperbilirubinemia, Sickle cell anemia

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Submitted: 2015-09-03 10:57:50
Published: 2015-10-20 15:42:29
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