The Journal of clinical endocrinology and metabolism · 2007
Increased osteoprotegerin levels in Cushing's syndrome are associated with an adverse cardiovascular risk profile.
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Dovio Andrea, Allasino Barbara, Palmas Enrico, Ventura Massimo, Pia Anna, Saba Laura, Aroasio Emiliano, Terzolo Massimo, Angeli Alberto
Аннотация
CONTEXT: Patients with Cushing's syndrome (CS) have a mortality rate four times higher than age- and sex-matched subjects, mainly due to cardiovascular events. Serum osteoprotegerin (OPG) levels are increased in patients with cardiovascular disease and/or excess bone resorption.
OBJECTIVE: The aim of the study was to assess serum OPG and soluble receptor activator of nuclear factor-kappaB ligand (sRANKL) levels in CS and their possible relationship with coronary risk profile.
DESIGN AND SETTING: We conducted a cross-sectional study at a tertiary referral center.
PATIENTS: We studied 48 adult patients with CS and 48 age- and sex-matched controls. Twenty-six patients had pituitary-dependent CS; five patients had CS caused by ectopic ACTH secretion; and 17 patients had adrenal-dependent CS, accounted for by cortisol-secreting adenoma (n = 9), ACTH-independent macronodular bilateral adrenal hyperplasia (n = 4), or World Health Organization stage II cortisol-secreting carcinoma (n = 4). Patients underwent assessment of the absolute coronary risk and measurement of bone mineral density by dual-energy x-ray absorptiometry. Serum OPG and total sRANKL were measured by ELISA.
RESULTS: Serum OPG (but not sRANKL) levels were significantly higher in CS patients than in controls (P < 0.01). In patients, serum OPG showed a positive correlation with age (r = 0.36; P = 0.01). OPG levels were higher in patients with the metabolic syndrome [median, 1262 (range, 199-2306) pg/ml vs. 867 (412-2479) pg/ml; P = 0.03], and showed a positive correlation with the absolute coronary risk (r = 0.36; P = 0.01). Serum OPG levels were higher in patients with pituitary-dependent CS in comparison with adrenal-dependent CS.
CONCLUSIONS: In patients with CS, serum OPG levels are increased and appear to be associated with coronary risk.
OBJECTIVE: The aim of the study was to assess serum OPG and soluble receptor activator of nuclear factor-kappaB ligand (sRANKL) levels in CS and their possible relationship with coronary risk profile.
DESIGN AND SETTING: We conducted a cross-sectional study at a tertiary referral center.
PATIENTS: We studied 48 adult patients with CS and 48 age- and sex-matched controls. Twenty-six patients had pituitary-dependent CS; five patients had CS caused by ectopic ACTH secretion; and 17 patients had adrenal-dependent CS, accounted for by cortisol-secreting adenoma (n = 9), ACTH-independent macronodular bilateral adrenal hyperplasia (n = 4), or World Health Organization stage II cortisol-secreting carcinoma (n = 4). Patients underwent assessment of the absolute coronary risk and measurement of bone mineral density by dual-energy x-ray absorptiometry. Serum OPG and total sRANKL were measured by ELISA.
RESULTS: Serum OPG (but not sRANKL) levels were significantly higher in CS patients than in controls (P < 0.01). In patients, serum OPG showed a positive correlation with age (r = 0.36; P = 0.01). OPG levels were higher in patients with the metabolic syndrome [median, 1262 (range, 199-2306) pg/ml vs. 867 (412-2479) pg/ml; P = 0.03], and showed a positive correlation with the absolute coronary risk (r = 0.36; P = 0.01). Serum OPG levels were higher in patients with pituitary-dependent CS in comparison with adrenal-dependent CS.
CONCLUSIONS: In patients with CS, serum OPG levels are increased and appear to be associated with coronary risk.