Abstract
The aim of this study was to evaluate GH/IGF-I axis and other pituitary functions
in adult patients with coeliac disease. For this purpose, twenty-eight adult coeliac
patients [20M, 8F:19–74 years; body mass index (BMI): 18.5–28 kg/m2 ] were recruited. Basal thyroid, adrenal and gonadal function, serum IGF-I and PRL,
and routine parameters were evaluated. Dynamic GH secretion was carried out by GHRH
plus arginine test. In 20 patients, antipituitary antibodies (APA) were also evaluated.
Seven out of 28 patients, independently from disease onset and the gluten-free diet
(GFD), showed an impaired GH secretion (25%). All were males, 2 with severe growth
hormone deficiency (GHD) and 5 with partial GHD. In patients with GHD, as compared
to coeliac patients with normal GH secretion, HOMA (2.1±1.2 vs. 0.9±0.4) and QUICKI
(0.35±0.03 vs. 0.39±0.02) levels were significantly higher and lower, respectively,
while IGF-I levels were slightly lower (17.7±3.7 vs. 24.7±6.3, p=NS). APA were negative
in all 20 patients studied. In conclusion, a significant number of adult coeliac patients
show an impaired GH secretion, this alteration being predominant in males and independent
from disease onset and diet regimen. Given the absence of APAs, the cause of this
pituitary dysfunction remains unclear even if a previous autoimmune involvement in
some cases cannot be excluded.
Key words
GH deficiency - GH-IGF-I axis - coeliac disease
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Correspondence
E. FerranteMD
Endocrinology and Diabetology Unit
Department of Medical Sciences Pad. Granelli
Via F. Sforza, 35
20122 Milan
Italy
Phone: +39/02/50 32 06 08
Fax: +39/02/50 32 06 05
Email: emanuele.ferrante@unimi.it