PITUITARY AND THYROID INSUFFICIENCY IN THALASSAEMIC HAEMOSIDEROSIS
| Autor: | D. P. Livadas, M. A. Boukis, A. Souvatzoglou, K. Sofroniadou, D. A. Koutras, L. Siafaka |
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| Rok vydání: | 1984 |
| Předmět: |
Adult
Male endocrine system medicine.medical_specialty Pituitary gland Hemosiderosis Adolescent Endocrinology Diabetes and Metabolism Thyroid Gland Thyrotropin Thyrotropin-releasing hormone Gonadotropin-Releasing Hormone Basal (phylogenetics) Follicle-stimulating hormone Endocrinology Thyrotropic cell Internal medicine medicine Humans Thyrotropin-Releasing Hormone business.industry Thyroid Luteinizing Hormone Prolactin Thyroxine medicine.anatomical_structure Pituitary Gland Thalassemia Female Follicle Stimulating Hormone business Luteinizing hormone hormones hormone substitutes and hormone antagonists |
| Zdroj: | Clinical Endocrinology. 20:435-443 |
| ISSN: | 1365-2265 0300-0664 |
| Popis: | Thyroid and pituitary function tests using hypothalamic releasing factors were performed in seven patients with thalassaemia and secondary haemosiderosis and in a control group of seven healthy subjects. The TSH level in the thalassaemic patients (18.07 +/- 1.10 microU/ml) was higher than in the controls (1.01 +/- 0.14 microU/ml, P less than 0.001). After TRH administration the TSH values increased less than in controls. Serum thyroxine and FT41 values were lower in the group of patients with thalassaemia (76.7 +/- 7.8 nmol/l and 19.3 +/- 2.2) compared to the controls (116.1 +/- 6.9 nmol/l, P less than 0.005 and 38.6 +/- 3.6, P less than 0.001). The basal prolactin values did not differ significantly between the two groups, but after TRH administration the increment was significantly lower in thalassaemics than in controls (P less than 0.005). The basal LH values were lower in the thalassaemic patients (1.37 +/- 0.24 ng/ml) than in the controls (3.23 +/- 0.50 ng/ml) and did not increase significantly after LHRH administration. The FSH values were also lower in the thalassaemic group (0.46 +/- 0.15 ng/ml) compared to the controls (2.06 +/- 0.08 ng/ml, P less than 0.001), and increased only slightly after LHRH administration. We conclude that in thalassaemia pituitary deficiency exists, mostly of gonadotrophs, but possibly also for the thyrotrophs and the lactotrophs. Latent primary hypothyroidism has also been found in the thalassaemic group. The functional abnormalities found in both endocrine glands are best explained as a consequence of coexisting haemosiderosis. |
| Databáze: | OpenAIRE |
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