当前位置: X-MOL 学术Hypertension › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Diagnostic and Risk Factors for Complement Defects in Hypertensive Emergency and Thrombotic Microangiopathy
Hypertension ( IF 8.3 ) Pub Date : 2020-02-01 , DOI: 10.1161/hypertensionaha.119.13714
Sjoerd A M E G Timmermans 1, 2 , Alexis Wérion 3 , Jan G M C Damoiseaux 4 , Johann Morelle 3, 5 , Chris P Reutelingsperger 2 , Pieter van Paassen 1, 2
Affiliation  

Supplemental Digital Content is available in the text. Hypertensive emergency can cause thrombotic microangiopathy (TMA) in the kidneys with high rates of end-stage renal disease (ESRD) and vice versa. The conundrum of hypertension as the cause of TMA or consequence of TMA on the background of defects in complement regulation remains difficult. Patients with hypertensive emergency and TMA on kidney biopsy were tested for ex vivo C5b9 formation on the endothelium and rare variants in complement genes to identify complement-mediated TMA. We identified factors associated with defects in complement regulation and poor renal outcomes. Massive ex vivo C5b9 formation was found on resting endothelial cells in 18 (69%) out of 26 cases at the presentation, including the 9 patients who carried at least one rare genetic variant. Thirteen (72%, N=18) and 3 (38%, N=8) patients with massive and normal ex vivo complement activation, respectively, progressed to ESRD (P=0.03). In contrast to BP control, inhibition of C5 activation prevented ESRD to occur in 5 (83%, N=6) patients with massive ex vivo complement activation. TMA-related graft failure occurred in 7 (47%, N=15) donor kidneys and was linked to genetic variants. The assessment of both ex vivo C5b9 formation and screening for rare variants in complement genes may categorize patients with hypertensive emergency and TMA into different groups with potential therapeutic and prognostic implications. We propose an algorithm to recognize patients at the highest risk for defects in complement regulation.

中文翻译:

高血压急症和血栓性微血管病补体缺陷的诊断和危险因素

补充数字内容在文本中可用。高血压急症可导致肾脏血栓性微血管病 (TMA),终末期肾病 (ESRD) 发生率高,反之亦然。在补体调节缺陷的背景下,高血压是 TMA 的原因还是 TMA 的后果这一难题仍然很困难。对患有高血压急症和肾活检 TMA 的患者进行了内皮离体 C5b9 形成和补体基因中罕见变异的检测,以确定补体介导的 TMA。我们确定了与补体调节缺陷和肾脏预后不良相关的因素。在就诊时的 26 例病例中,有 18 例(69%)在静息内皮细胞上发现了大量的离体 C5b9 形成,其中包括 9 例携带至少一种罕见遗传变异的患者。十三 (72%, N=18) 和 3 (38%, N=8) 患者分别有大量和正常的体外补体激活,进展为 ESRD (P=0.03)。与 BP 控制相反,C5 激活的抑制阻止了 5 名(83%,N=6)患者发生大量体外补体激活的 ESRD。TMA 相关的移植失败发生在 7 个(47%,N=15)供体肾脏中,并且与遗传变异有关。对离体 C5b9 形成的评估和补体基因中罕见变异的筛选可以将高血压急症和 TMA 患者分为具有潜在治疗和预后意义的不同组。我们提出了一种算法来识别补体调节缺陷风险最高的患者。抑制 C5 激活阻止了 5 名 (83%, N=6) 患者发生大量体外补体激活的 ESRD。TMA 相关移植失败发生在 7 个(47%,N=15)供体肾脏中,并且与遗传变异有关。对离体 C5b9 形成的评估和补体基因中罕见变异的筛选可以将高血压急症和 TMA 患者分为具有潜在治疗和预后意义的不同组。我们提出了一种算法来识别补体调节缺陷风险最高的患者。抑制 C5 激活阻止了 5 名 (83%, N=6) 患者发生大量体外补体激活的 ESRD。TMA 相关的移植失败发生在 7 个(47%,N=15)供体肾脏中,并且与遗传变异有关。对离体 C5b9 形成的评估和补体基因中罕见变异的筛选可以将高血压急症和 TMA 患者分为具有潜在治疗和预后意义的不同组。我们提出了一种算法来识别补体调节缺陷风险最高的患者。对离体 C5b9 形成的评估和补体基因中罕见变异的筛选可以将高血压急症和 TMA 患者分为具有潜在治疗和预后意义的不同组。我们提出了一种算法来识别补体调节缺陷风险最高的患者。对离体 C5b9 形成的评估和补体基因中罕见变异的筛选可以将高血压急症和 TMA 患者分为具有潜在治疗和预后意义的不同组。我们提出了一种算法来识别补体调节缺陷风险最高的患者。
更新日期:2020-02-01
down
wechat
bug