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Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

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Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
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Genetic Diagnosis of Oculocutaneous Albinism Type 1A: A Novel <i>TYR</i> Variant.

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Updated: May 8, 2025

Spontaneous Murine Model of Anaplastic Thyroid Cancer
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Serum Biomarkers in Thyroid Malignancies: Evaluating Thyroid-Stimulating Hormone Receptor (TSHR) and Vascular

Raghad N Shihab1, Atheer Abd Elqader Zain Elabdeen1, Samar Ahmed Jabbar1

  • 1Iraqi Center for Cancer and Medical Genetic Research, Mustansiriyah university, Baghdad, Iraq.

Asian Pacific Journal of Cancer Prevention : APJCP
|March 29, 2025
PubMed
Summary
This summary is machine-generated.

Low serum vascular adhesion protein-1 (VAP-1) may indicate thyroid cancer. This study found reduced VAP-1 in thyroid cancer patients, suggesting its potential as a diagnostic marker alongside thyroid hormones.

Keywords:
TGTSHTSHRThyroid malignant tumorVAP-1

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Area of Science:

  • Endocrinology
  • Oncology
  • Biomarker Discovery

Background:

  • Thyroid cancer is a common endocrine malignancy requiring effective molecular diagnostic markers.
  • This research investigates the diagnostic utility of the thyroid-stimulating hormone receptor (TSHR) and vascular adhesion protein-1 (VAP-1).

Purpose of the Study:

  • To evaluate VAP-1 and TSHR as potential biomarkers for thyroid cancer diagnosis.
  • To analyze the relationship between thyroid hormone levels and these markers in thyroid cancer patients.

Main Methods:

  • Serum samples from 90 patients with thyroid disorders and 25 healthy controls were analyzed.
  • Thyroid hormones (T3, T4, TSH), thyroglobulin (Tg), TSHR, and VAP-1 were quantified using ELISA kits.

Main Results:

  • Thyroid cancer patients showed elevated T3, T4, and Tg, with reduced TSH compared to controls.
  • Significantly lower VAP-1 levels were observed in thyroid cancer patients (P < 0.001).
  • TSHR levels did not show significant differences across patient groups.

Conclusions:

  • Reduced serum VAP-1 levels may serve as a valuable diagnostic marker for thyroid cancer.
  • The observed hormonal profile highlights the intricate relationship between thyroid function and cancer biology.
  • Further research is needed to elucidate the molecular mechanisms behind these alterations.