期刊
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
卷 85, 期 9, 页码 3169-3176出版社
ENDOCRINE SOC
DOI: 10.1210/jc.85.9.3169
关键词
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Metabolic-endocrine dysfunctions, including hyperinsulinemia, hypertriglyceridemia, increased fat mass, and dysregulation of the hypothalamic-pituitary-adrenal axis, are common in myotonic dystrophy (MD). We hypothesized that increased production of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) may be important underlying mechanisms. We studied the diurnal rhythmicity of cytokines and cortisol, ACTH, and dehydroepiandrosterone in 18 men with adult onset RID and 18 controls. Morning levels of androstenedione, 17-hydroxyprogesterone, testosterone, and insulin were also determined. Genetic analyses were performed, including calculation of allele sizes. Median circulating 24-h levels of IL-6 (P < 0.001), TNF-alpha (P = 0.05), ACTH (P < 0.05), and cortisol (P < 0.05)were all significantly increased in MD, whereas dehydroepiandrosterone levels were decreased (P < 0.001). The diurnal rhythms of these cytokines/hormones were disturbed in patients. Morning testosterone levels were decreased and insulin levels increased (P < 0.01 for both). Patients with high body fat mass had significantly increased insulin levels and decreased morning levels of cortisol, ACTH, and testosterone. IL-6 and TNF-alpha levels are increased and adrenocortical hormone regulation is disturbed in MD. Adiposity may contribute to these disturbances, which may be of importance for decreased adrenal androgen hormone production and metabolic, muscular, and neuropsychiatric dysfunction in MD.
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