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Respective roles of circulating T4 and T3 in control of TSH secretion in severely iodide-deficient rats

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Summary

After a 6-month iodide deficiency, Wistar male rats were submitted to a normal iodine diet (20 and 50 μg of127I daily). Plasma T3, T4 and TSH were determined by RIA from 0 to 140 days of iodide refeeding. A highly significant correlation was found between plasma TSH and T4 concentrations, but not between plasma TSH and T3 levels. These data suggest that an increase in plasma T3 alone, up to the normal value, is not able to inhibit TSH secretion. It is only when a certain plasma T4 concentration is also reached, resulting in further T3 formation through deiodination, that TSH secretion is inhibited.

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References

  1. Larsen, P.R., Silva, J.E., and Kaplan, M.M., Endocr. Rev.2 (1981) 87.

    PubMed  Google Scholar 

  2. Obregon, M.J., Pascual, A., Mallol, J., Morreale de Escobar, G., and Escobar del Rey, F., Endocrinology106 (1980) 1827.

    PubMed  Google Scholar 

  3. Morley, J.E., Rev.2 (1981) 396.

    Google Scholar 

  4. Berthier, C., and Lemarchand-Béraud, T., Acta endocr., Copenh.89 (1978) 567.

    Google Scholar 

  5. Rognoni, J.B., thèse, Université de Provence, Marseille, France, 1980.

  6. Fukuda, H., Yasuda, N., and Greer, M.A., Endocrinology97 (1975) 1196.

    PubMed  Google Scholar 

  7. Refotoff, S., DeGroot, L.H., and Barsano, P.C., J. clin. Endocr. Metab.51 (1980) 41.

    PubMed  Google Scholar 

  8. von Overbeck, K., and Lemarchand-Béraud, T., in Ann. Endocr.42 (1981) 16A.

    Google Scholar 

  9. Chopra, I.J., Salomon, D.H., and Chua Teco, G.N., J. clin. Endocr. Metab.36 (1973) 1050.

    PubMed  Google Scholar 

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Authors and Affiliations

  1. Laboratoire d'Endocrinologie Cellulaire, Université de Provence, Place Victor Hugo 3, F-13331, Marseille Cedex 3, (France)

    J. B. Rognoni, Th. Lemarchand-Béraud & C. Berthier

  2. Division d'Endocrinologie et Biochimie Clinique, CHUV, CH-1011, Lausanne, (Switzerland)

    J. B. Rognoni, Th. Lemarchand-Béraud & C. Berthier

Authors
  1. J. B. Rognoni
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  2. Th. Lemarchand-Béraud
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  3. C. Berthier
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Additional information

Dedicated to the memory of Prof. C. Simon.

This work was supported by grants from the CNRS (Equipe de Recherche Associée no 234) and from the INSERM (A.T.P. 49.77.8).

Acknowledgments. The authors wish to thank Mrs M. Chartier for valuable technical assistance. They are indebted to the rat pituitary distribution programme of NIAMDD, NIH, Bethesda, for their gift of rat TSH reagents.

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Rognoni, J.B., Lemarchand-Béraud, T. & Berthier, C. Respective roles of circulating T4 and T3 in control of TSH secretion in severely iodide-deficient rats. Experientia 40, 215–217 (1984). https://doi.org/10.1007/BF01963607

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  • DOI: https://doi.org/10.1007/BF01963607

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