Abstract |
The aim of the present study was to investigate the pituitary-thyroid axis function during the long-term (30 days) intramuscular administration of 4 mg/day of thyrotropin-releasing hormone tartrate (TRH-T) in 15 patients with spinocerebellar degeneration. The study was performed as follows: (1) acute 4 mg TRH-T test with hourly prolactin (PRL) and thyroid-stimulating hormone (TSH) level evaluations for 6 h; (2) placebo; and (3) 4 mg/day of TRH-T administration for 30 days with TSH, PRL, and free T3 and T4 (FT3 and FT4) levels evaluated on days 1, 15 and 30. Hormone determination was performed just before and 1 h after placebo or TRH-T administration. The acute administration of TRH-T caused a sustained rise of TSH which lasted until the 6th hour and of PRL which declined after 1 h (p < 0.01). During placebo administration, no change of TSH, PRL, FT3 or FT4 was observed. On the 1st day of treatment, 1 h after the TRH-T injection, a significant increase of both TSH and PRL levels occurred (p < 0.01). As compared to the 1st day, a significant decrease of the TSH (p < 0.01) levels occurred on the 15th and 30th days before TRH-T: the TSH response to TRH-T administration was present although less than on the 1st day (p < 0.01). Moreover, throughout the whole period of treatment, no difference was recorded for PRL levels before or after TRH-T administration.(ABSTRACT TRUNCATED AT 250 WORDS)
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Authors | B Merola, A Colao, G Di Renzo, A Filla, G Campanella, G Lombardi |
Journal | Hormone research
(Horm Res)
Vol. 38
Issue 3-4
Pg. 160-3
( 1992)
ISSN: 0301-0163 [Print] Switzerland |
PMID | 1306848
(Publication Type: Journal Article)
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Chemical References |
- Triiodothyronine
- Thyrotropin-Releasing Hormone
- Prolactin
- Thyrotropin
- Thyroxine
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Topics |
- Adolescent
- Adult
- Humans
- Kinetics
- Male
- Prolactin
(blood)
- Spinocerebellar Degenerations
(blood)
- Thyrotropin
(blood)
- Thyrotropin-Releasing Hormone
(administration & dosage, pharmacology, therapeutic use)
- Thyroxine
(blood)
- Triiodothyronine
(blood)
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