Bone and Calcium Metabolism in Subclinical Autoimmune Hyperthyroidism and Hypothyroidism
Yükleniyor...
Dosyalar
Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Japan Endocrine Society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bone turnover is reported to increase in favour of resorption in overt hyperthyroidism and the rate of resorption is associated with the levels of thyroid hormones. Hypothyroidism, on the other hand, was shown to cause no disturbance of calcium kinetics and found to associate lower trabecular resorption surfaces and increased bone cortical thickness. Similar studies are very rare in subclinical thyroid disorders and consequently we aimed to examine calcium and bone metabolism in subclinical thyroid disorders. Thirteen patients with subclinical hyperthyroidism secondary to untreated Graves' disease, 20 patients with subclinical hypothyroidism and 10 healthy subjects participated in this survey. Briefly calcium, phosphorus, and creatinine (Cre), urinary deoxypyridinoline (U-DPD) and serum osteocalcin (OC) were measured as biochemical markers for calcium metabolism. Concerning serum Ca and phosphorus levels, there were no differences between three of the groups, but urinary Ca excretion was higher in subclinical hyperthyroid patients compared to control and hypothyroid subjects. Hypothyroid patients had similar U-DPD levels with control subjects (p = 0.218). Serum OC and U-DPD were higher in subclinical hyperthyroid compared to control subjects (p<0.001 and p<0.001 respectively). We demonstrated a higher bone turnover and greater calcium excretion in subclinical hyperthyroid patients. Additionally, we found that subclinical hypothyroidism is not associated with disturbed calcium metabolism. As persistent increase in bone turnover is responsible for accelerated bone loss, patients with Graves' disease may have increased risk for osteoporosis.
Açıklama
Anahtar Kelimeler
Subclinical hyperthyroidism, Subclinical hypothyroidism, Bone markers, Bone metabolism, Bone turnover
Kaynak
Endocrine Journal
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
50
Sayı
6
Künye
Kısakol, G., Kaya, A., Gönen, S., Tunç, R., (2003). Bone and Calcium Metabolism in Subclinical Autoimmune Hyperthyroidism and Hypothyroidism. Endocrine Journal, 50(6), 657-661. Doi: 10.1507/endocrj.50.657
