Ectopic germinal center and megalin defect in primary Sjogren syndrome with renal Fanconi syndrome

Background This study reports the clinical and pathological features of 12 cases of primary Sjogren syndrome (pSS) with renal involvement presenting with proximal tubular dysfunction in a single center, and investigates the possible correlation of ectopic germinal center formation and megalin/cubilin down-expression. Method Clinical and pathological records were reviewed. Immunohistochemistry was carried out to detect megalin, cubilin, CD21 and IL-17 expression. Results Patients presented with different degrees of proximal renal tubule lesion and decreased estimated glomerular filtration rate... Mehr ...