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논문 기본 정보

자료유형
학술저널
저자정보
김윤지 (서울대학교) 김정희 (서울대학교병원) 홍아람 (서울대학교병원) 박경선 (서울대학교) 김상완 (서울대학교) 신찬수 (서울대학교) 김성연 (서울대학교)
저널정보
대한내분비학회 Endocrinology and Metabolism Endocrinology and Metabolism Vol.35 No.3
발행연도
2020.1
수록면
628 - 635 (8page)

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초록· 키워드

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Background: Salivary cortisol is routinely used as a diagnostic test for Cushing syndrome. The diagnostic use of salivary cortisolfor adrenal insufficiency (AI), however, is less established. We aimed to investigate the utility of morning basal and adrenocorticotropic hormone-stimulated salivary cortisol in diagnosing AI in Korean adults. Methods: We prospectively included 120 subjects (female, n=70) from Seoul National University Hospital. AI was defined as astimulated serum cortisol level of <496.8 nmol/L during the short Synacthen test (SST). Serum and saliva samples were drawn between 8:00 AM and 10:00 AM. Salivary cortisol levels were measured using an enzyme immunoassay kit. Results: Thirty-four patients were diagnosed with AI according to the SST results. Age, sex, body mass index, serum albumin levels,and serum creatinine levels did not significantly differ between the normal and AI groups. Basal and stimulated salivary cortisol levelswere positively correlated with basal (r=0.538) and stimulated serum cortisol levels (r=0.750), respectively (all P<0.001). Receiveroperating characteristic curve analysis yielded a cutoff level of morning basal salivary cortisol of 3.2 nmol/L (sensitivity, 84.9%; specificity, 73.5%; area under the curve [AUC]=0.822). The optimal cutoff value of stimulated salivary cortisol was 13.2 nmol/L (sensitivity, 90.7%; specificity, 94.1%; AUC=0.959). Subjects with a stimulated salivary cortisol level above 13.2 nmol/L but a stimulated serum cortisol level below 496.8 nmol/L (n=2) had lower serum albumin levels than those showing a concordant response. Conclusion: The diagnostic performance of stimulated salivary cortisol measurements after the SST was comparable to serum cortisol measurements for diagnosing AI.

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