Celiac disease and its relation to bone metabolism
Authors:
I. Žofková
Authors‘ workplace:
Endokrinologický ústav, Praha
Published in:
Čas. Lék. čes. 2009; 148: 246-248
Category:
Review Article
Overview
Celiac disease (nontropical sprue) is autoimmune disorder of the intestinal mucose, which usually develops in humans hypersensitive to gluten. The disease can occur at any age, with the greatest occurrence in early adulthood. Besides intestinal symptomatology – abdominal pain, diarrhoea and weight loss - celiac disease is often accompanied by extra-intestinal complications including osteopenia or osteoporosis and osteomalacia. Overproduction of cytokines IL-1 alpha, IL-1 beta and TNF-alpha increases bone resorption, which is further accelerated by hyperparathyroidism connected with malabsorption of calcium and vitamin D. Interaction of both these mechanisms activated bone loss.
Similarly as the classic (symptomatic) celiac disease, the occult form, commonly seen in the elderly, may be associated with a risk of osteoporosis or osteomalacia related fractures. Diagnosis is based on positivity of IgA and IgG antigliadin and endomysial antibodies and characteristic endoscopic detection of inflammation and atrophy of duodenal mucose. Areal screening of celiac disease in osteoporotic patients is very dubious. However, a methodical examination should be performed in all patients with unexplainable hyperparathyroidism or in those with various autoimmune diseases (type 1 diabetes, thyroiditis chronica), or in premenopausal women and men, who did not reach the appropriate peak bone mass. On the other hand, detailed analysis of calcium metabolism, including markers of bone remodlling and X-ray densitometry (DXA), are recommended in all patients with verified celiac disease. The effectiveness of a gluten-free diet and substitution with vitamin D and calcium, or treatment with bisphosphonates are discussed. The promising therapy appears to be new molecules with reparative effect on intestinal mucose such as AT-1001.
Key words:
celiac disease, genetics, inflammation, malabsorption, hyperparathyroidism, osteoporosis.
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