Cited by 57Thyroid Disorders and TreatmentsAdrenal Hormones and DisordersPituitary Gland Disorders and Treatments

Therapeutic concentrations of mitotane (o,p'-DDD) inhibit thyrotroph cell viability and TSH expression and secretion in a mouse cell line model

Zatelli, Maria Chiara, Gentilin, Erica, Daffara, Fulvia, Tagliati, Federico, Reimondo, Giuseppe, Carandina, Gianni, Ambrosio, Maria Rosaria, Terzolo, Massimo +1 more·2010·Endocrinology

Abstract

Mitotane therapy is associated with many side effects, including thyroid function perturbations mimicking central hypothyroidism, possibly due to laboratory test interference or pituitary direct effects of mitotane. We investigated whether increasing concentrations of mitotane in the therapeutic range might interfere with thyroid hormone assays and evaluated the effects of mitotane on a mouse TSH-producing pituitary cell line. TSH, free T(4), and free T(3) levels do not significantly change in sera from hypo-, hyper-, or euthyroid patients after addition of mitotane at concentrations in the therapeutic window. In the mouse TalphaT1 cell line, mitotane inhibits both TSH expression and secretion, blocks TSH response to TRH, and reduces cell viability, inducing apoptosis at concentrations in the therapeutic window. TRH is not capable of rescuing TalphaT1 cells from the inhibitory effects of mitotane on TSH expression and secretion, which appear after short time treatment and persist over time. Our results demonstrate that mitotane does not interfere with thyroid hormone laboratory tests but directly reduces both secretory activity and cell viability on pituitary TSH-secreting mouse cells. These data represent a possible explanation of the biochemical picture consistent with central hypothyroidism in patients undergoing mitotane therapy and open new perspectives on the direct pituitary effects of this drug.

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Crossref · 10.1210/en.2009-1404

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  • Changes in thyroid function are due to partial central hypothyroidism, backed by experiments in cell lines where mitotane directly induces apoptosis in thyrotrope cells.

    “One interpretation is that the changes are due to partial central hypothyroidism. This is further backed up by experiments in cell lines, where mitotane directly induces apoptosis in thyrotrope cells (300).”

    From Adrenocortical carcinoma (2014) · cites this paper as [300]

  • The decrease in free T4 is not a laboratory artifact because mitotane does not interfere with thyroid hormone measurements.

    “It has been determined that this is not a laboratory artifact because mitotane does not interfere with thyroid hormone measurements (300).”

    From Adrenocortical carcinoma (2014) · cites this paper as [300]

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Authors
Zatelli, M. C., Gentilin, E., Daffara, F., Tagliati, F., Reimondo, G., Carandina, G., Ambrosio, M. R., Terzolo, M., & degli Uberti, E. C.
Affiliations
  • University of Ferrara (IT)
  • Arcispedale Sant'Anna (IT)
  • Ospedale San Luigi Gonzaga (IT)
  • Section of Endocrinology (M.C.Z., E.G., F.T., M.R.A., E.C.d.U.), Santa Anna Hospital, 44121 Ferrara, Italy
Venue
Endocrinology
Published
2010-04-14
Volume
151
Issue
6
Pages
2453-2461
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2134264575
Cited by
57
References
35
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 3 · 2015: 7 · 2014: 8 · 2013: 9 · 2012: 2
FWCI
3.12
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • Associazione Italiana per la Ricerca sul Cancro
  • Università degli Studi di Ferrara
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
Keywords
mitotane, central hypothyroidism, thyroid-stimulating hormone, TSH secretion, pituitary cells, thyrotropin-releasing hormone, apoptosis, cell viability, thyroid function tests, adverse drug reactions, thyroid hormone assay
MeSH terms
Animals, Cell Survival, Enzyme-Linked Immunosorbent Assay, Humans, Mitotane, Thyrotropin, Thyrotropin-Releasing Hormone, Thyroxine, Triiodothyronine, Antineoplastic Agents, Hormonal, Reverse Transcriptase Polymerase Chain Reaction, Mice, Thyrotrophs

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