期刊
CLINICAL ENDOCRINOLOGY
卷 70, 期 4, 页码 593-598出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2265.2008.03387.x
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资金
- Cystic Fibrosis Association of the Emilia Region, Italy
Growth delay is a feature of patients with cystic fibrosis (CF). CF is a condition characterized by chronic inflammation that has been shown to modify the IGF system, which is essential for normal growth, and is related to pulmonary function in CF patients. We aimed to verify whether circulating levels of tumour necrosis factor (TNF)-alpha, interleukin (IL)-6, insulin and the IGF system were related and/or had relationships with linear growth in children with CF. Seventeen prepubertal CF patients (nine males and eight females) in a stable clinical condition were enrolled. Auxological parameters, pulmonary function and the Shwachman-Kulczycki (S-K) score were assessed, and serum samples were drawn at baseline and after 12 months. TNF-alpha, IL-6, IGF-I, IGF-II, IGFBP-1, IGFBP-2, IGFBP-3 and insulin were assayed using specific commercial kits. At baseline, TNF-alpha serum concentration was related to serum IGF-I concentration (R = 0.53), IGF-II bioactivity (IGF-II/IGFBP-3 molar ratio, R = +0.52) and insulin concentration (R = +0.63). Changes in serum IL-6 and IGFBP-2 concentrations during the 12-month observation were positively correlated (R = +0.63). Changes in height standard deviation score (Ht SDS) were correlated with IGF-I serum concentrations at baseline (R = +0.67) and after 12 months (R = +0.70), with IGF-I bioavailability and with IGFBP-1 serum concentrations (R = -0.88). Body mass index (BMI) SDS correlated with IGF bioavailability. This study showed a relationship between inflammatory status and the IGF system, and an effect of these interactions on longitudinal growth. Moreover, a role for insulin in growth was identified. Better control of inflammation and preservation of insulin secretion could benefit these patients.
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