Vitamin D and Calcium Supplementation Accelerate Vascular Calcification in a Model of Pseudoxanthoma Elasticum.

Vitamin D and Calcium Supplementation Accelerate Vascular Calcification in a Model of Pseudoxanthoma Elasticum.
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DOI:
10.3390/ijms23042302
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发表时间:
2022-02-19
影响因子:
5.6
通讯作者:
Letavernier E
Letavernier E
中科院分区:
生物学2区
文献类型:
--
作者:
Bouderlique E;Tang E;Zaworski J;Coudert A;Bazin D;Borondics F;Haymann JP;Leftheriotis G;Martin L;Daudon M;Letavernier E

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动脉钙化是弹力假黄瘤 (PXE) 的一个共同特征,PXE 是一种以 ABCC6 突变为特征的疾病,会导致焦磷酸盐缺乏,而焦磷酸盐是动脉中磷酸钙结晶的关键抑制剂。方法:我们分析了 Abcc6−/− 小鼠(PXE 小鼠模型)长期补充温和的维生素 D(含或不含钙)是否会影响血管钙化的发展。八组小鼠(包括 Abcc6−/− 和野生型)每 2 周接受一次维生素 D 补充剂、单独富含钙的饮食(饮用水中的钙)、同时补充维生素 D 和富含钙的饮食,或标准饮食(对照组),为期 6 个月。通过 3D 微型计算机断层扫描、光学光热红外 (OPTIR) 光谱、扫描电子显微镜结合能量色散 X 射线光谱 (SEM-EDS) 和 Yasue 染色来评估主动脉和肾动脉钙化。结果:6个月时,虽然维生素D和/或钙没有显着增加血清钙水平,但维生素D和钙的补充显着恶化了Abcc6−/−小鼠的主动脉和肾动脉钙化。结论:维生素 D 和/或钙补充剂可加速 PXE 小鼠模型中的血管钙化。这些结果对 PXE 患者以及在更大程度上全身焦磷酸盐水平低的患者中使用这些补充剂发出了警告。
Arterial calcification is a common feature of pseudoxanthoma elasticum (PXE), a disease characterized by ABCC6 mutations, inducing a deficiency in pyrophosphate, a key inhibitor of calcium phosphate crystallization in arteries. Methods: we analyzed whether long-term exposure of Abcc6−/− mice (a murine model of PXE) to a mild vitamin D supplementation, with or without calcium, would impact the development of vascular calcification. Eight groups of mice (including Abcc6−/− and wild-type) received vitamin D supplementation every 2 weeks, a calcium-enriched diet alone (calcium in drinking water), both vitamin D supplementation and calcium-enriched diet, or a standard diet (controls) for 6 months. Aorta and kidney artery calcification was assessed by 3D-micro-computed tomography, Optical PhotoThermal IR (OPTIR) spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) and Yasue staining. Results: at 6 months, although vitamin D and/or calcium did not significantly increase serum calcium levels, vitamin D and calcium supplementation significantly worsened aorta and renal artery calcification in Abcc6−/− mice. Conclusions: vitamin D and/or calcium supplementation accelerate vascular calcification in a murine model of PXE. These results sound a warning regarding the use of these supplementations in PXE patients and, to a larger extent, patients with low systemic pyrophosphate levels.
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