Auckland City Hospital, Auckland, New Zealand.
Department of Renal Medicine, Middlemore Hospital, 100 Hospital Rd, Otahuhu, Auckland, 2025, New Zealand.
BMC Nephrol. 2020 Sep 17;21(1):399. doi: 10.1186/s12882-020-02056-5.
C3-glomerulonephritis can lead to progressive renal impairment from complement-mediated glomerular injury. Incidence and outcomes of C3-glomerulonephritis are not known in the New Zealand population.
We reviewed all cases of C3-glomerulonephritis from the past 10 years at a tertiary referral centre in New Zealand. Descriptive information on baseline characteristics and clinical outcomes was collected.
Twenty-six patients were included (16 men; mean ± SD age 44 ± 25 years) with a median follow-up of 30 months. Disease incidence was 1.3 cases per million individuals, of which 42% were Pacific Islanders. Most patients presented with renal impairment, with a median (IQR) creatinine at diagnosis of 210 (146-300) μmol/L, and 11 (42%) patients presented with nephrotic syndrome. Seven (27%) patients progressed to end stage renal disease and 2 (8%) had died. End stage renal disease occurred in 20% of patients treated with immunosuppression and in 50% of those not treated. Complete remission was seen in 25% of patients treated with some form of immunosuppression and in 17% of those not treated.
Our results are consistent with previous descriptions of C3-glomerulonephritis. There was a suggestion of better clinical outcomes in patients treated with immunosuppression. There was a higher disease incidence in Pacific Islanders, which may indicate an underlying susceptibility to complement dysfunction in this population.
C3 肾小球肾炎可导致补体介导的肾小球损伤引起进行性肾损伤。在新西兰人群中,C3 肾小球肾炎的发病率和结局尚不清楚。
我们回顾了新西兰一家三级转诊中心过去 10 年中所有的 C3 肾小球肾炎病例。收集了基线特征和临床结局的描述性信息。
共纳入 26 例患者(男性 16 例;平均年龄 44 ± 25 岁),中位随访 30 个月。疾病发病率为每百万个体 1.3 例,其中 42%为太平洋岛民。大多数患者表现为肾功能损害,诊断时肌酐中位数(IQR)为 210(146-300)μmol/L,11 例(42%)患者表现为肾病综合征。7 例(27%)患者进展为终末期肾病,2 例(8%)患者死亡。接受免疫抑制治疗的患者中有 20%进展为终末期肾病,而未接受治疗的患者中有 50%进展为终末期肾病。接受某种形式免疫抑制治疗的患者中有 25%达到完全缓解,而未接受治疗的患者中有 17%达到完全缓解。
我们的结果与之前对 C3 肾小球肾炎的描述一致。接受免疫抑制治疗的患者临床结局更好。太平洋岛民的疾病发病率较高,这可能表明该人群补体功能障碍的潜在易感性。