| Thymulin deficiency and low 3,5,3'-triiodothyronine syndrome in infants with low birth weight syndromes. | |
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MedLine Citation:
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PMID: 3597705 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Experimental and clinical evidence indicates that thymic endocrine function is under neuroendocrine control. Recently, a positive correlation was found between plasma thymulin (a major endocrine product of thymus) and serum thyroid hormone concentrations. Low serum thyroid hormone concentrations are frequently found in premature newborn infants. In this study we measured plasma thymulin by bioassay and serum T3 and T4 in a series of healthy fullterm newborns and in premature infants with various disorders. The study subjects were 26 healthy fullterm infants, 23 fullterm small for gestational age infants, 30 preterm appropriate for gestational age (AGA) infants, 22 preterm small for gestational age infants and 30 infants with respiratory distress syndrome, of whom 15 were fullterm and 15 were preterm AGA. Blood samples were obtained 3, 5, 10, 20, and 40 days after delivery. In the healthy fullterm infants plasma thymulin concentrations were low during the first days of life and subsequently increased, reaching normal values for children aged 1-12 months by the 10th day after birth. Persistently low plasma thymulin and serum T3 levels were found in the majority of infants with pathological conditions; the lowest values for both hormones were found in infants with respiratory distress syndrome. A highly significant positive correlation was present in all groups between mean plasma thymulin and serum T3, but not T4. Short term T3 administration in 6 additional preterm AGA infants caused a significant increase in plasma thymulin titers compared to those in 6 untreated infants. We conclude that plasma thymulin is decreased in premature newborns with the low T3 syndrome and that this abnormality may be reversed by administration of T3. These findings indicate that thymic endocrine activity is modulated by thyroid function in early postnatal life. |
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Authors:
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N Fabris; E Mocchegiani; S Mariotti; G Caramia; T Braccili; F Pacini; A Pinchera |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of clinical endocrinology and metabolism Volume: 65 ISSN: 0021-972X ISO Abbreviation: J. Clin. Endocrinol. Metab. Publication Date: 1987 Aug |
Date Detail:
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Created Date: 1987-08-25 Completed Date: 1987-08-25 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0375362 Medline TA: J Clin Endocrinol Metab Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 247-52 Citation Subset: AIM; IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Euthyroid Sick Syndromes
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blood* Female Humans Infant, Low Birth Weight / blood* Infant, Newborn Infant, Premature / blood Male Respiratory Distress Syndrome, Newborn / blood Thymic Factor, Circulating / deficiency* Thymus Hormones / deficiency* Thyroxine / blood Triiodothyronine / blood, therapeutic use |
| Chemical | |
Reg. No./Substance:
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0/Thymus Hormones; 6893-02-3/Triiodothyronine; 7488-70-2/Thyroxine; 78922-62-0/Thymic Factor, Circulating |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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