Assessment of ABO blood grouping and secretor status in the saliva of the patients with oral potentially malignant disorders

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Abstract
Background: Secretor status may possibly be one of the factors in the etiopathogenesis of oral precancerous lesions and subsequently cancer. Studies have shown the relationship between the pathogenesis of disease and secretor status. They have made known that secretor status is a possible factor influencing disease status. Studies have revealed the association between blood groups and specific diseases. Aims: To assess any association of ABO blood grouping with oral potentially malignant disorders (OPMDs) and to examine whether there is any difference in the saliva secretor status in the patients with OPMDs and healthy controls. Materials and Methods: The study consisted of 90 subjects, with 45 patients assigned to two groups (a) Patients with potentially malignant disorders and (b) healthy controls. ABO blood grouping was done and 1 ml of unstimulated saliva was collected in a sterile test tube.The Wiener agglutination test was performed to analyze the secretor status in both the groups. Chi-square test and odd ratio were used to assess the relationship between ABO blood group and OPMDs. Chi-square test was performed to assess the relationship between secretor status and OPMDs. Probability level was fixed at P = 0.00). Eighty-seven percent of patients with OPMDs were nonsecretors, while in the control group sixteen percent of them were nonsecretors. There was no statistically significant relationship between ABO blood groups and OPMDs (P > 0.05). Conclusions: The study confirms the inability to secrete blood group antigens in the saliva of patients with OPMDs which could be regarded as a host risk factor. Results could not propose a relationship between ABO blood group and OPMDs.

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