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    Adrenocorticotrophin and cortisol secretion in children after low dose cranial irradiation.

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    Authors
    Crowne, Elizabeth C
    Wallace, W Hamish B
    Gibson, S
    Moore, C M
    White, A
    Shalet, Stephen M
    Affiliation
    Department of Endocrinology, Christie Hospital, Manchester, UK.
    Issue Date
    1993-09
    
    Metadata
    Show full item record
    Abstract
    OBJECTIVE: We investigated the effect of low dose cranial irradiation (18-24 Gy) on spontaneous ACTH and cortisol secretion in children. DESIGN: We analysed 24-hour plasma ACTH and cortisol profiles sampled at 20-minute intervals. PATIENTS: Twenty long-term survivors of acute lymphoblastic leukaemia were studied and results compared with those in 14 normal children. MEASUREMENTS: ACTH and cortisol profiles were analysed by Fourier transformation and spectral analysis of stationarized data, autocorrelation and coherency analysis. RESULTS: The normal circadian rhythms of ACTH and cortisol were preserved in the children after cranial irradiation. The median 0900 h and midnight values were 1.50(0.8-6.4)pmol/l and 1.0(0.6-3.7)pmol/l respectively for ACTH and 282(48-1913)nmol/l and 57.5(44-637)nmol/l respectively for cortisol, and were not significantly different from those in the normal group. Fourier transformation revealed dominant periodicities for ACTH at 0.7-1.1 h, equivalent to 22-34 ACTH secretory bursts per 24 hours, and for cortisol at 0.7-1.1 h and 2-4.8 h. Similar results were found in the normal group. Coherency analysis indicated a significant shared periodicity of 0.7-1.2 h in nine children, corresponding to 20-34 related secretory bursts in 24 hours for ACTH and cortisol. After pooling the coherency spectra in the cranially irradiated group, comparison with the pooled data from the normal group revealed no significant difference between the two groups in the relationship between the two hormones. CONCLUSION: No significant disruption of spontaneous ACTH or cortisol secretion, either in the amount or pattern of hormones secreted, was found in children after low dose cranial irradiation (18-24 Gy).
    Citation
    Adrenocorticotrophin and cortisol secretion in children after low dose cranial irradiation. 1993, 39 (3):297-305 Clin. Endocrinol. (Oxf)
    Journal
    Clinical Endocrinology
    URI
    http://hdl.handle.net/10541/99747
    DOI
    10.1111/j.1365-2265.1993.tb02369.x
    PubMed ID
    8222292
    Type
    Article
    Language
    en
    ISSN
    0300-0664
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1365-2265.1993.tb02369.x
    Scopus Count
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