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Immunoscintigraphy in axial spondyloarthritis: a new imaging modality for sacroiliac inflammation
Annals of the Rheumatic Diseases ( IF 20.3 ) Pub Date : 2020-02-26 , DOI: 10.1136/annrheumdis-2020-216993
Philippe Carron 1 , Thomas Renson 2 , Manouk de Hooge 3 , Bieke Lambert 4 , Kathia De Man 4 , Lennart Jans 5 , Dirk Elewaut 2 , Filip E Van den Bosch 2
Affiliation  

Imaging of sacroiliac joints (SIJ) is one of the cornerstones in early recognition of axial spondyloarthritis (axSpA).1 Currently, MRI is the preferred technique to visualise bone marrow oedema (BME), which can be defined as sacroiliitis when certain criteria are met.2 However, the definition of sacroiliitis as being ‘highly suggestive for axSpA’ has limitations in situations when BME is subtle or when SpA-like BME lesions are present due to other conditions such as mechanical stress.3 4 This underscores the need for additional and more specific imaging modalities. Given the marked efficacy of tumour necrosis factor (TNF) inhibitors in axSpA, with approximately 50% of patients achieving a clinically important response,5 we reasoned that molecular imaging studies aiming at selectively visualising TNFα in vivo at the site of clinical inflammation could be an attractive approach. Therefore, we set up a proof-of-concept study in axSpA patients by performing scintigraphy with Tc99m-labelled certolizumab pegol (CZP) as tracer. We investigated the agreement between tracer uptake on immunoscintigrapy and BME on MRI at the same localisation of the SIJ. CZP was conjugated with succinimidyl-6-hydrazino-nicotinamide (S-HYNIC), a bifunctional crosslinker. Subsequently, solutions of 1.25 mg conjugated S-HYNIC CZP were used to radiolabel with Tc99m. Seven axSpA patients (71.4% male; mean age 36±5.7 …

中文翻译:

中轴性脊柱关节炎的免疫闪烁显像:骶髂炎症的一种新成像方式

骶髂关节 (SIJ) 成像是中轴性脊柱关节炎 (axSpA) 早期识别的基石之一。1 目前,MRI 是可视化骨髓水肿 (BME) 的首选技术,当满足某些标准时,可将其定义为骶髂关节炎.2 然而,将骶髂关节炎定义为“高度提示 axSpA”在 BME 不明显或由于机械应力等其他条件而存在 SpA 样 BME 病变的情况下有局限性。3 4 这强调需要额外的和更具体的成像方式。鉴于肿瘤坏死因子 (TNF) 抑制剂在 axSpA 中的显着疗效,大约 50% 的患者达到了临床上重要的反应,5 我们推断,旨在在临床炎症部位选择性地观察体内 TNFα 的分子成像研究可能是一种有吸引力的方法。因此,我们通过使用 Tc99m 标记的 certolizumab pegol (CZP) 作为示踪剂进行闪烁扫描,在 axSpA 患者中建立了一项概念验证研究。我们研究了在 SIJ 的同一定位下,示踪剂对免疫闪烁扫描和 BME 在 MRI 上的摄取之间的一致性。CZP 与 succinimidyl-6-hydrazino-nicotinamide (S-HYNIC) 结合,这是一种双功能交联剂。随后,将 1.25 mg 缀合的 S-HYNIC CZP 溶液用于用 Tc99m 进行放射性标记。七名 axSpA 患者(71.4% 男性;平均年龄 36±5.7 … 我们研究了在 SIJ 的同一定位下,示踪剂对免疫闪烁扫描和 BME 在 MRI 上的摄取之间的一致性。CZP 与 succinimidyl-6-hydrazino-nicotinamide (S-HYNIC) 结合,这是一种双功能交联剂。随后,将 1.25 mg 缀合的 S-HYNIC CZP 溶液用于用 Tc99m 进行放射性标记。七名 axSpA 患者(71.4% 男性;平均年龄 36±5.7 … 我们研究了在 SIJ 的同一定位下,示踪剂对免疫闪烁扫描和 BME 在 MRI 上的摄取之间的一致性。CZP 与 succinimidyl-6-hydrazino-nicotinamide (S-HYNIC) 结合,这是一种双功能交联剂。随后,将 1.25 mg 缀合的 S-HYNIC CZP 溶液用于用 Tc99m 进行放射性标记。七名 axSpA 患者(71.4% 男性;平均年龄 36±5.7 …
更新日期:2020-02-26
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