TY - JOUR
T1 - Protein biomarkers and coronary microvascular dilatation assessed by rubidium-82 PET in women with angina pectoris and no obstructive coronary artery disease
AU - Schroder, Jakob
AU - Zethner-Moller, Rikke
AU - Bové, Kira Bang
AU - Mygind, Naja Dam
AU - Hasbak, Philip
AU - Michelsen, Marie Mide
AU - Gustafsson, Ida
AU - Kastrup, Jens
AU - Prescott, Eva
N1 - Copyright © 2018 Elsevier B.V. All rights reserved.
PY - 2018/8
Y1 - 2018/8
N2 - Background and aims: While a plethora of biomarkers have been shown to be associated with coronary artery disease, studies assessing biomarkers in coronary microvascular dysfunction (CMD) are few. We investigated associations between cardiovascular protein biomarkers and non-endothelium dependent CMD assessed by positron emission tomography (PET). Methods: In 97 women with angina pectoris and no significant obstructive coronary artery disease (<50% stenosis on invasive coronary angiography), CMD was defined as myocardial blood flow reserve (MBFR) < 2.5 by rubidium-82 PET. Blood samples were analyzed with a cardiovascular disease proteomic panel encompassing 92 biomarkers. The relation between MBFR and biomarkers was evaluated with age-adjusted regression analysis. Results: Median age was 62 years (range 31–79), median MBFR was 2.7 (range 1.2–4.7) and 32% had non-endothelium dependent CMD (MBFR<2.5). Four biomarkers were significantly correlated with MBFR: Galectin-4 (Gal4, p = 0.008), growth differentiation factor 15 (GDF15, p = 0.026), tissue-type plasminogen activator (tPA, p = 0.030) and von Willebrand factor (vWF, p = 0.018), while 12 biomarkers showed a trend for correlation (0.05 ≤ p < 0.15). Of the 16 identified biomarkers, 10 are involved in pro-inflammatory pathways. Conclusions: In a panel of 92 cardiovascular protein biomarkers, 4 were significantly associated with non-endothelium dependent CMD in women: Gal4, GDF15, tPA and vWF, suggesting that inflammatory status and coagulation changes are associated with impaired microvascular dilatation. Further confirmatory studies are needed to corroborate these findings.
AB - Background and aims: While a plethora of biomarkers have been shown to be associated with coronary artery disease, studies assessing biomarkers in coronary microvascular dysfunction (CMD) are few. We investigated associations between cardiovascular protein biomarkers and non-endothelium dependent CMD assessed by positron emission tomography (PET). Methods: In 97 women with angina pectoris and no significant obstructive coronary artery disease (<50% stenosis on invasive coronary angiography), CMD was defined as myocardial blood flow reserve (MBFR) < 2.5 by rubidium-82 PET. Blood samples were analyzed with a cardiovascular disease proteomic panel encompassing 92 biomarkers. The relation between MBFR and biomarkers was evaluated with age-adjusted regression analysis. Results: Median age was 62 years (range 31–79), median MBFR was 2.7 (range 1.2–4.7) and 32% had non-endothelium dependent CMD (MBFR<2.5). Four biomarkers were significantly correlated with MBFR: Galectin-4 (Gal4, p = 0.008), growth differentiation factor 15 (GDF15, p = 0.026), tissue-type plasminogen activator (tPA, p = 0.030) and von Willebrand factor (vWF, p = 0.018), while 12 biomarkers showed a trend for correlation (0.05 ≤ p < 0.15). Of the 16 identified biomarkers, 10 are involved in pro-inflammatory pathways. Conclusions: In a panel of 92 cardiovascular protein biomarkers, 4 were significantly associated with non-endothelium dependent CMD in women: Gal4, GDF15, tPA and vWF, suggesting that inflammatory status and coagulation changes are associated with impaired microvascular dilatation. Further confirmatory studies are needed to corroborate these findings.
U2 - 10.1016/j.atherosclerosis.2018.06.864
DO - 10.1016/j.atherosclerosis.2018.06.864
M3 - Journal article
C2 - 29981522
SN - 1567-5688
VL - 275
SP - 319
EP - 327
JO - Atherosclerosis
JF - Atherosclerosis
ER -
