M Shahidi-Dadras1, A Golfeshan1. 1. Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract
BACKGROUND: There has not been publication of any previous study about the role of secretory status or Lewis phenotypes in the mechanisms of pemphigus vulgaris (PV). AIM: To evaluate the frequencies of secretory status and Lewis phenotypes in patients with PV compared with healthy controls (HCs) in order determine their roles in this autoimmune disease. METHODS: In total, 50 patients and 100 age- and sex-matched HCs were selected to form the study population, and 2 mL blood were collected from each subject to identify their Lewis phenotype. In subjects with the Le(a-b-) phenotype, saliva was also collected to determine secretor status. RESULTS: The frequency of the nonsecretor (NS) phenotypes Le(a+b-) and Le(a-b-) together was significantly higher in patients than in HCs: 34/50 (68%)vs. 26/100 (26%), respectively (P < 0.001). All the patients and HC subjects with the Le (a-b-) phenotype were found to be NS by haemagglutination inhibition assay of saliva samples. CONCLUSION: Based on our results, it seems that Le/b-negative NS individuals are more susceptible to PV.
BACKGROUND: There has not been publication of any previous study about the role of secretory status or Lewis phenotypes in the mechanisms of pemphigus vulgaris (PV). AIM: To evaluate the frequencies of secretory status and Lewis phenotypes in patients with PV compared with healthy controls (HCs) in order determine their roles in this autoimmune disease. METHODS: In total, 50 patients and 100 age- and sex-matched HCs were selected to form the study population, and 2 mL blood were collected from each subject to identify their Lewis phenotype. In subjects with the Le(a-b-) phenotype, saliva was also collected to determine secretor status. RESULTS: The frequency of the nonsecretor (NS) phenotypes Le(a+b-) and Le(a-b-) together was significantly higher in patients than in HCs: 34/50 (68%)vs. 26/100 (26%), respectively (P < 0.001). All the patients and HC subjects with the Le (a-b-) phenotype were found to be NS by haemagglutination inhibition assay of saliva samples. CONCLUSION: Based on our results, it seems that Le/b-negative NS individuals are more susceptible to PV.