Cited by 69Thyroid Disorders and TreatmentsGrowth Hormone and Insulin-like Growth FactorsAdrenal Hormones and Disorders

Different effects of continuous infusion of interleukin-1 and interleukin-6 on the hypothalamic-hypophysial-thyroid axis.

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van Haasteren, G A, van der Meer, M J, Hermus, A R, Linkels, E, Klootwijk, W, Kaptein, E, van Toor, H, Sweep, C G +2 more·1994·Endocrinology

Abstract

The cytokines interleukin-1 (IL-1) and IL-6 are thought to be important mediators in the suppression of thyroid function during nonthyroidal illness. In this study we compared the effects of IL-1 and IL-6 infusion on the hypothalamus-pituitary-thyroid axis in rats. Cytokines were administered by continuous ip infusion of 4 micrograms IL-1 alpha/day for 1, 2, or 7 days or of 15 micrograms IL-6/day for 7 days. Body weight and temperature, food and water intake, and plasma TSH, T4, free T4 (FT4), T3, and corticosterone levels were measured daily, and hypothalamic pro-TRH messenger RNA (mRNA) and hypophysial TSH beta mRNA were determined after termination of the experiments. Compared with saline-treated controls, infusion of IL-1, but not of IL-6, produced a transient decrease in food and water intake, a transient increase in body temperature, and a prolonged decrease in body weight. Both cytokines caused transient decreases in plasma TSH and T4, which were greater and more prolonged with IL-1 than with IL-6, whereas they effected similar transient increases in the plasma FT4 fraction. Infusion with IL-1, but not IL-6, also induced transient decreases in plasma FT4 and T3 and a transient increase in plasma corticosterone. Hypothalamic pro-TRH mRNA was significantly decreased (-73%) after 7 days, but not after 1 or 2 days, of IL-1 infusion and was unaffected by IL-6 infusion. Hypophysial TSH beta mRNA was significantly decreased after 2 (-62%) and 7 (-62%) days, but not after 1 day, of IL-1 infusion and was unaffected by IL-6 infusion. These results are in agreement with previous findings that IL-1, more so than IL-6, directly inhibits thyroid hormone production. They also indicate that IL-1 and IL-6 both decrease plasma T4 binding. Furthermore, both cytokines induce an acute and dramatic decrease in plasma TSH before (IL-1) or even without (IL-6) a decrease in hypothalamic pro-TRH mRNA or hypophysial TSH beta mRNA, suggesting that the acute decrease in TSH secretion is not caused by decreased pro-TRH and TSH beta gene expression. The TSH-suppressive effect of IL-6, either administered as such or induced by IL-1 infusion, may be due to a direct effect on the thyrotroph, whereas additional effects of IL-1 may involve changes in the hypothalamic release of somatostatin or TRH.(ABSTRACT TRUNCATED AT 400 WORDS)

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Crossref · 10.1210/endo.135.4.7925094

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  • Chronic IL-6 infusions result in decreased serum T4, T3 and hypothalamic TRH expression in rats.

    “In support of an important role for IL-6, chronic IL-6 infusions result in decreased serum T4, T3 and hypothalamic TRH expression in rats [53].”

    From An update on non-thyroidal illness syndrome (2021) · cites this paper as [53]

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Authors
van Haasteren, G. A., van der Meer, M. J., Hermus, A. R., Linkels, E., Klootwijk, W., Kaptein, E., van Toor, H., Sweep, C. G., Visser, T. J., & de Greef, W. J.
Affiliations
Erasmus University Rotterdam (NL)
Venue
Endocrinology
Published
1994-10
Volume
135
Issue
4
Pages
1336-1345
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2095656220
Cited by
69
References
33
Citations by year
2026: 1 · 2024: 1 · 2022: 3 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 2 · 2013: 2 · 2012: 2
FWCI
2.93
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • RePub (Erasmus University Rotterdam) (submittedVersion, other-oa)
  • RePub (Erasmus University Rotterdam) (submittedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
interleukin-1, interleukin-6, hypothalamic-pituitary-thyroid axis, low T3 syndrome, thyroid suppression, TSH secretion, thyroid hormone binding, free thyroxine, corticosterone, food and water intake, body temperature, body weight, rats
MeSH terms
Animals, Body Temperature, Body Weight, Corticosterone, Drinking, Eating, Hypothalamo-Hypophyseal System, Hypothalamus, Interleukin-1, Male, Median Eminence, Pituitary Gland, Protein Precursors, Pyrrolidonecarboxylic Acid, Radioimmunoassay, RNA, Messenger, Thyroid Gland, Thyrotropin, Thyrotropin-Releasing Hormone, Thyroxine, Triiodothyronine, Interleukin-6, Gene Expression, Rats, Wistar, Rats

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