Cited by 69Thyroid Disorders and TreatmentsThyroid Cancer Diagnosis and TreatmentThyroid and Parathyroid Surgery

Recent advances in thyroid hormone regulation: toward a new paradigm for optimal diagnosis and treatment

Open access
Hoermann, Rudolf, Midgley, John E. M., Larisch, Rolf, Dietrich, Johannes W.·2017·Frontiers in Endocrinology

Abstract

In thyroid health, the pituitary hormone thyroid-stimulating hormone (TSH) raises glandular thyroid hormone production to a physiological level and enhances formation and conversion of T4 to the biologically more active T3. Overstimulation is limited by negative feedback control. In equilibrium defining the euthyroid state, the relationship between TSH and FT4 expresses clusters of genetically determined, interlocked TSH-FT4 pairs, which invalidates their statistical correlation within the euthyroid range. Appropriate reactions to internal or external challenges are defined by unique solutions and homeostatic equilibria. Permissible variations in an individual are much more closely constrained than over a population. Current diagnostic definitions of subclinical thyroid dysfunction are laboratory based, and do not concur with treatment recommendations. An appropriate TSH level is a homeostatic concept that cannot be reduced to a fixed range consideration. The control mode may shift from feedback to tracking where TSH becomes positively, rather than inversely related with FT4. This is obvious in pituitary disease and severe non-thyroid illness, but extends to other prevalent conditions including aging, obesity, and levothyroxine (LT4) treatment. Treatment targets must both be individualized and respect altered equilibria on LT4. To avoid amalgamation bias, clinically meaningful stratification is required in epidemiological studies. In conclusion, pituitary TSH cannot be readily interpreted as a sensitive mirror image of thyroid function because the negative TSH-FT4 correlation is frequently broken, even inverted, by common conditions. The interrelationships between TSH and thyroid hormones and the interlocking elements of the control system are individual, dynamic, and adaptive. This demands a paradigm shift of its diagnostic use.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3389/fendo.2017.00364

Cites

104 of 104 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [7]Spencer CA Thyroid function tests: assay of thyroid hormones and related substances. Thyroid Disease Manager. (2017). Available from: http://www.thyroidmanager.org/chapter/assay-of-thyroid-hormones-and-related-substances3/

Cited by

Sorted by citations

Authors
Hoermann, R., Midgley, J. E. M., Larisch, R., & Dietrich, J. W.
Affiliations
  • Klinikum Lüdenscheid (DE)
  • Witten/Herdecke University (DE)
Corresponding author
Hoermann, Rudolf
Venue
Frontiers in Endocrinology
Published
2017-12-22
Volume
8
Pages
364-364
ISSN
1664-2392 (ISSN-L)
OpenAlex
W2779801487
Cited by
69
References
104
Citations by year
2026: 1 · 2025: 12 · 2024: 6 · 2023: 4 · 2022: 12 · 2021: 7 · 2020: 13 · 2019: 8 · 2018: 6
FWCI
1.08
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Endocrinology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Cancer Diagnosis and Treatment
  • Health Sciences › Medicine › Surgery › Thyroid and Parathyroid Surgery
Keywords
thyroid-stimulating hormone, free thyroxine, negative feedback control, thyroid homeostasis, subclinical thyroid dysfunction, levothyroxine therapy, pituitary disorders, aging, obesity, thyroid function diagnosis

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review