Cardiovascular status in endogenous cortisol excess: the prospective CV-CORT-EX study.

Abstract

Cushing´s syndrome (CS) results in increased cardiovascular morbidity and mortality. Subtype-specific differences and possible reversibility after biochemical cure are not well investigated. Prospective cohort study evaluating the cardiovascular status in different forms of endogenous cortisol excess. Patients with overt CS (n=40, 47±13 years, 75% women; 18 pituitary, 13 adrenal, 9 ectopic), biochemically cured CS (n=56, 53±12 years, 79% women; 30 pituitary, 21 adrenal, 5 ectopic), and adrenal incidentalomas with mild autonomous cortisol secretion (MACS) (n=18, 62±11 years, 56% women) underwent comprehensive biochemical, metabolic, and cardiovascular assessment. Results were compared with a representative sample of the general population of Würzburg (n=4965, 55±12 years, 52% women). Overt CS was associated with left ventricular (LV) remodeling along with hypertrophy and impaired longitudinal systolic/diastolic function at echocardiography. In 20 CS patients followed for a median of 8 (quartiles: 6, 11) months after biochemical remission, hypertension and hyperglycemia were better controlled, while cardiac alterations only partially improved. Patients with previous CS (median time of biochemical remission: 95 (36, 201) months) had worse diastolic function than the general population (LV relaxation velocity e´ 0.08 (0.07, 0.10) ms-1 vs 0.10 (0.08, 0.12) ms-1, p<0.001). In MACS, cardiac remodeling was even more pronounced than in individuals with metabolic syndrome. In patients with overt CS, cured CS, and MACS, we found a sizable and significant deviation from the general population mean regarding cardiac structure and function. Even mild cortisol excess is associated with glucocorticoid-induced cardiac alterations which appear to persist despite long-term biochemical remission.