Abstract
Angiogenic growth factor therapy for ischemic cardiovascular disease carries a risk of stimulating atherosclerotic plaque growth. We evaluated risk benefit ratio of sustained administration of recombinant human placental growth factor (rhPlGF)-2 in mice with advanced atherosclerosis and chronic ischemic cardiomyopathy. We maintained apolipoprotein E-deficient mice on a high cholesterol diet and induced myocardial infarction by transient ligation at 4 weeks. At 8 weeks, we assessed left ventricular (LV) function and randomized mice to receive rhPlGF-2 or vehicle (VEH) subcutaneously for 28 days. Administration of rhPlGF-2 significantly increased PlGF plasma levels without adverse hemodynamic or systemic inflammatory effects. RhPlGF-2 did not increase plaque area, composition, or vulnerability in the aortic arch. RhPlGF-2 significantly improved contractile function and reduced LV end-systolic and end-diastolic volume indices with a concomitant increase in capillary and arteriolar density in ischemic myocardium. RhPlGF-2 may represent a promising therapeutic strategy in chronic ischemic cardiomyopathy.
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Abbreviations
- Apo E−/− :
-
Apolipoprotein E knockout
- EF:
-
Ejection fraction
- ESVi/EDVi:
-
End-systolic/diastolic volume index
- hsCRP:
-
High-sensitivity C-reactive protein
- ICAM:
-
Intercellular adhesion molecule
- IL:
-
Interleukin
- LV:
-
Left ventricle
- MAP:
-
Mean arterial pressure
- MI:
-
Myocardial infarction
- PBS:
-
Phosphate-buffered saline
- PRSW:
-
Preload-recruitable stroke work
- rhPlGF:
-
Recombinant human placental growth factor
- SBP/DBP:
-
Systolic/diastolic blood pressure
- TPR:
-
Total peripheral resistance
- VCAM:
-
Vascular cell adhesion molecule
- VEGF(R):
-
Vascular endothelial growth factor (receptor)
- VEH:
-
Vehicle
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Acknowledgements
We thank Prof. Dr. Aernout Luttun for helpful advice and Dr. Ann Belmans for her assistance with statistical analyses.
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This work was supported by a KU Leuven Program Financing grant (PF 10/014) to Dr. S. Janssens, by a dedicated grant of Life Science Research Partners VZW, a non-profit organization for the advancement of biomedical science and by a postdoctoral grant of the Fund for Scientific Research Flanders to Dr. P. Pokreisz (1246510N) and to Dr. Swinnen (12B8212N). Prof. Janssens holds a Chair in Cardiology sponsored by Astra Zeneca and a Bayer SA-NV Chair in Cardiovascular Medicine.
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D.C. is a chairman of the board of CoBioRes, NV, which could be perceived as conflict of interest. The other authors have declared that no conflict of interest exists.
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All institutional and national guidelines for the care and use of laboratory animals were followed and approved by the appropriate institutional committees.
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Wu, M., Pokreisz, P., Swinnen, M. et al. Sustained Placental Growth Factor-2 Treatment Does Not Aggravate Advanced Atherosclerosis in Ischemic Cardiomyopathy. J. of Cardiovasc. Trans. Res. 10, 348–358 (2017). https://doi.org/10.1007/s12265-017-9742-4
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DOI: https://doi.org/10.1007/s12265-017-9742-4