1. Female patients exhibit altered vasopressin-induced coronary microvascular contractile response and molecular signaling following cardiac surgery.
- Author
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Banerjee D, Sabe SA, Sodha NR, Ehsan A, Cioffi WG, Miner TJ, Li J, Abid MR, Feng J, and Sellke FW
- Subjects
- Humans, Female, Male, Middle Aged, Sex Factors, Aged, Cardiopulmonary Bypass adverse effects, Signal Transduction, Cardiac Surgical Procedures adverse effects, Receptors, Vasopressin metabolism, Heart Arrest, Induced adverse effects, Microvessels drug effects, Microcirculation drug effects, Coronary Circulation drug effects, Vasopressins pharmacology, Coronary Vessels drug effects, Coronary Vessels metabolism, Vasoconstriction drug effects
- Abstract
Background: Emerging data suggest women have worse outcomes than men following cardioplegia and cardiopulmonary bypass (CP/CPB). Altered coronary microvascular function affecting myocardial perfusion may contribute, but human translational studies are lacking., Methods: Viable coronary microvessels (<200 μ m) were dissected from human atrial samples collected before and after CP/CPB from a subset of 108 patients enrolled. Ex vivo contractile responses to vasopressin were assessed using video microscopy. RNA deep-sequencing and immunoblotting were used to quantify gene and protein expression, respectively., Results: Coronary microvessels exhibited increased vasopressin-induced contractile responses post-CP/CPB in males and females (p < 0.0001). Females exhibited a decrease in microvascular contractile response versus males pre- (p = 0.1) and post-CP/CPB (p = 0.09) which approached significance. Myocardial vasopressin 1a receptor levels were increased in females versus males (p = 0.001). Vasopressin-induced vasoconstriction predicted postoperative cardiac index., Conclusions: Impaired coronary microvascular contractile responses in females jeopardizing myocardial perfusion may underlie worse outcomes following cardiac surgery., Competing Interests: Declaration of interest statement The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2025
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