Discrepancy between simultaneous digital skin microvascular and brachial artery macrovascular post-occlusive hyperemia in systemic sclerosis

被引:0
|
作者
Roustit, Matthieu [1 ,2 ]
Simmons, Grant H. [3 ]
Baguet, Jean-Philippe
Carpentier, Patrick [4 ]
Cracowski, Jean-Luc [1 ,2 ]
机构
[1] Grenoble Univ Hosp, INSERM CIC03, Clin Res Ctr, F-38043 Grenoble 09, France
[2] Grenoble Med Sch, Inserm ER117, Grenoble, France
[3] Univ Oregon, Dept Human Physiol, Eugene, OR 97403 USA
[4] Grenoble Univ Hosp, Vasc Med Dept, Grenoble, France
关键词
systemic sclerosis; Raynaud's phenomenon; microcirculation; flow-mediated dilation; post-occlusive hyperemia; thermal hyperemia;
D O I
暂无
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Objective. Vascular impairment, a main feature of the pathogenesis of systemic sclerosis (SSc), involves both the macro- and the microvasculature. We compared and correlated simultaneously measured skin microvascular and brachial artery macrovascular post-occlusive hyperemia in 3 groups: patients with SSc, patients with primary Raynaud's phenomenon (RP), and healthy volunteers. Methods. Thirty-three healthy volunteers, 36 patients with primary RP, and 42 patients with SSc were enrolled. For each subject, brachial artery flow-mediated dilation (FMD) and cutaneous post-occlusive reactive hyperemia (PORH) were simultaneously recorded after 5-minute occlusion of the brachial artery. Local thermal hyperemia, nitroglycerin-mediated dilation (NMD), intima-media thickness (IMT), and pulse wave velocity (PWV) were also assessed. Results. Digital cutaneous peak PORH was altered in patients with primary RP and SSc compared to healthy controls, whereas FMD was not significantly different among all groups. We observed a correlation between digital peak cutaneous vascular conductance and brachial FMD in healthy controls (r = 0.49; p = 0.004), but not in patients with primary RP or SSc. Thermal hyperemia was altered only in patients with SSc. Brachial NMD, IMT, and PWV were not different among all groups. Conclusion. We observed a loss of the correlation between brachial FMD and digital cutaneous PORH in patients with SSc and primary RP. Microvascular function is impaired in SSc, whereas brachial artery endothelial function is normal.
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页码:1576 / 1583
页数:8
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