Tan Li, Jin Lu-Hua, Wang Yi-Qin, Chen Wei, Wen Qiong
Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou, 510080, China.
NHC Key Laboratory of Clinical Nephrology, Guangdong Provincial Key Laboratory of Nephrology, Sun Yat-Sen University, Guangzhou, 510080, China.
Sci Rep. 2025 Jan 13;15(1):1804. doi: 10.1038/s41598-025-86081-0.
Nephrotic syndrome (NS) occurs in 5-15% of patients with IgA nephropathy (IgAN), resulting in poorer long-term outcomes compared to those without NS. Clinical features and renal prognosis for patients with both NS and IgAN across different kidney pathologies have not been fully elucidated. This study included patients with primary IgAN through renal biopsy at the First Affiliated Hospital of Sun Yat-sen University from January 2001 to November 2021 presenting with NS. Renal endpoint was defined as a 50% decrease in estimated glomerular filtration rate or progression to end-stage renal disease. A total of 207 patients with IgAN and NS were categorized into four pathological groups: IgAN with mesangial proliferative glomerulonephritis (IgAN-MsPGN) (n = 150), IgAN with minimal change disease (IgAN-MCD) (n = 49), IgAN with membranous nephropathy (IgAN-MN) (n = 7), and IgAN with membranoproliferative glomerulonephritis (IgAN-MPGN) (n = 1). Compared to the IgAN-MsPGN group, the IgAN-MCD group consisted of more males, had a younger average age, lower blood pressure, a lower prevalence of hematuria, and lower serum albumin and creatinine levels, whereas the IgAN-MN group was characterized by an older average age and lower serum creatinine levels. The IgAN-MCD group exhibited the mildest pathological changes among the groups. Of all patients, 133 were followed for an average follow-up period of 52.07 ± 44.04 months. Thirty-seven patients (27.8%) reached the renal endpoint. The IgAN-MCD group showed a higher rate of proteinuria remission and a better renal prognosis than the IgAN-MsPGN group. In conclusions, significant differences in clinicopathological features and long-term prognosis were observed among NS-IgAN patients with varying pathological phenotypes.
肾病综合征(NS)在5%至15%的IgA肾病(IgAN)患者中出现,与无NS的患者相比,其长期预后较差。不同肾脏病理类型的NS合并IgAN患者的临床特征和肾脏预后尚未完全阐明。本研究纳入了2001年1月至2021年11月在中山大学附属第一医院经肾活检确诊为原发性IgAN且伴有NS的患者。肾脏终点定义为估计肾小球滤过率下降50%或进展至终末期肾病。共有207例IgAN合并NS患者被分为四个病理组:系膜增生性肾小球肾炎型IgAN(IgAN-MsPGN)(n = 150)、微小病变型IgAN(IgAN-MCD)(n = 49)、膜性肾病型IgAN(IgAN-MN)(n = 7)和膜增生性肾小球肾炎型IgAN(IgAN-MPGN)(n = 1)。与IgAN-MsPGN组相比,IgAN-MCD组男性更多,平均年龄更小,血压更低,血尿患病率更低,血清白蛋白和肌酐水平更低,而IgAN-MN组的特点是平均年龄更大且血清肌酐水平更低。IgAN-MCD组在各病理组中表现出最轻微的病理变化。所有患者中,133例患者的平均随访时间为52.07±44.04个月。37例患者(27.8%)达到肾脏终点。IgAN-MCD组的蛋白尿缓解率更高,肾脏预后比IgAN-MsPGN组更好。总之,不同病理表型的NS-IgAN患者在临床病理特征和长期预后方面存在显著差异。