G?del M, Grahammer F, Huber TB. antigen Rabbit polyclonal to F10 could discriminate between primary and secondary MN. We also found that high urinary levels of retinol binding protein (RBP) predicted poor proteinuria outcomes in study participants. Patients with low or medium urinary RBP levels achieved remission more frequently than those with high RBP. = 5), minimal change disease (= 11), focal segmental glomerular sclerosis (= 10), membrano-proliferative glomerulonephritis (= 6), lupus nephropathy (= 21, including 1 LN-III, 2 LN-IV, 1 LN-V, 10 LN-IV+V, 7 LN-III+V), ANCA-associated vasculitis (= 5), amyloidosis (= 3), lymphoma (= 1), Goodpasture syndrome (= 1), diabetic nephropathy (= 1) and ANA(autoantibody to nuclear antigen) (+) of unknown significance (= 50). Of the 54 MN patients whose serum was sampled cross-sectionally, 23 had circulating anti-PLA2R antibodies. Anti-PLA2R was detected in 8.33% of complete remission (CR) patients, 31.58% of partial remission (PR) patients and 69.57% of no remission patients (= 0.001) (Table S1, Figure S3). Of the patients who were followed up longitudinally (= 136), the majority of PLA2R-related MN patients were men (58.87%), aged 15 to 83 (median = 39.8). Positive serum anti-PLA2R and glomerular PLA2R rates were 69.50% and 83.21%, respectively, in this population (Figure S1 & S2). The rate of PLA2R-related MN was 87.23%. In 37 SMN cases, 72.27% were PLA2R-related MN (Figure ?(Figure3A),3A), and the anti-PLA2R titer was 217291 RU/ml (Table ?(Table1).1). In the remaining 99 patients, the rate of PLA2R-related MN was 92.92% (Figure ?(Figure3B),3B), and the anti-PLA2R titer was 154255 RU/ml (Table ?(Table1).1). More SMN patients exhibited PLA2R-unrelated than PLA2R-related MN (61.11% vs 21.13% = 0.01) (Figure 3C-3D). 56% of tumor-associated MN was PLA2R-related. 50-82% of MN secondary to infection (HBV-, HCV- and syphilis-associated SMN) was PLA2R-related. PLA2R was also detected in other SMN patients, including those with psoriasis-, monoclonal gammopathy-, interstitial nephritis-, diabetes nephropathy- and hereditary-associated MN (Figure ?(Figure3E,3E, Table ?Table11). Table 1 PLA2R-related and -unrelated MN in SMN = 11; hepatitis C, = 1; syphilis, = 2; tumor, = 8; psoriasis, = 3; Sj?gren’s syndrome, = 2; Guillain-Barre syndrome, = 1; amyloidosis, = 1; monoclonal gammopathy, = 1; interstitial nephritis, = 2; diabetic nephropathy, = 2; hereditary MN, = 2; hepatitis B and tumor, = 1. Tumor-associated MN: Laryngocarcinoma, = 1; lymphoma = 1; rectal carcinoma, = 1; mediastinal tumor, = 1; breast cancer, = 1; lung cancer, = 1; thyroid tumor, = 1; gynecological cancer, = 1. Patients with circulating anti-PLA2R and with PLA2R deposits in glomeruli were included in group 1, patients negative for circulating anti-PLA2R, but with PLA2R in glomerular deposits were included in group Hyperoside 2, patients positive for circulating anti-PLA2R, but negative for PLA2R in glomerular deposits were included Hyperoside in group 3 and patients negative for both circulating anti-PLA2R antibodies and PLA2R in glomeruli were included in group 4. There were 89 (65.44%), 24 (17.64%), Hyperoside 5(3.68%) and 18 (13.24%) patients in groups 1, 2, 3 and 4, respectively (Table ?(Table2).2). Cases in the group 1 had a mean 24-h proteinuria of 5.43g. This was higher than 3.52g, the mean 24-h proteinuria level for cases in the group 2. There was no statistical difference in sex, age, time at renal biopsy from onset or follow-up time between PLA2R-related and PLA2R -unrelated MN patients. Hyperoside Furthermore, there was no significant difference in any relevant clinical parameters, such as serum creatinine (Scr) or glomerular filtration rate (GFR), among the four groups. More anti-PLA2R-positive patients developed nephrotic-range proteinuria (80.90%) than did anti-PLA2R-negative patients (50.00%, = 0.003). All 136 MN biopsies were analyzed for the extent of tubulointerstitial fibrosis and glomerular lesions. Interstitial fibrosis was found in 117 of 136 specimens. There were no significant differences in the percentage of patients with interstitial fibrosis, glomerular lesions or segmental glomerulosclerosis among the four groups (Table ?(Table33). Table 2 Clinical.