effects of acute recombinant human tsh (rhtsh) on serum ghrelin levels.
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ID: 204312
2011
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Abstract
Recent findings showed the presence of a reciprocal relationship between thyroid hormones and ghrelin, although the exact mechanism is not known. Design: Our study is addressed to evaluate the effect of acute exogenous rhTSH administration on serum ghrelin levels in athyreotic patients on replacement l-thyroxine therapy. The study group included fifty patients (16 males and 34 females) submitted to total thyroidectomy and 131-iodine remnant ablation for differentiated thyroid cancer on l-thyroxine therapy. Mean age was 47.5 ± 16.5 years and mean BMI was 25.6 ± 5.01 kg/m². rhTSH was administrated at the dosage of 0.9 mg i.m once daily for two consecutive days. Blood samples were taken between 08.00 and 09.00 after a overnight fasting for measurement of TSH, FT3, FT4 and ghrelin before the first administration of rhTSH and for measurement of TSH and ghrelin 24 h, 48 h, 72 h and 96 h after the first administration of rhTSH. Results: Mean ± SD values of basal TSH were 0.54 ± 0.77 µU/ml without significant difference between females and males. As expected, after rhTSH administration TSH concentrations increased at 24 h and 48 h with peak TSH values ranging from 20.20 to 313 µU/ml (mean ± SD 98.4±66.7µU/ml). Mean ± SD values of basal ghrelin were 1085 ± 373 pg/ml without significant difference between males and females. After rhTSH administration ghrelin concentrations decreased significantly (p<0.01) at 24 h (mean ± SD 934 ±314 pg/ml p<0.01) and returned to pre-treatment levels at 96 h. Conclusion: Our study demonstrates that acute exogenous TSH administration has a suppressive effect on ghrelin secretion independent from changes in thyroid status.
| Reference Key |
eciuoli2011frontierseffects
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|---|---|
| Authors | ;Cristina eCiuoli;Lucia eBrusco;Alexandra eTheodoropoulou;Maria Grazia eCastagna;Ornella eNeri;Letizia ePasqui;Furio ePacini |
| Journal | aip advances |
| Year | 2011 |
| DOI |
10.3389/fendo.2011.00094
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| URL | |
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