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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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Updated: May 1, 2026

A Blood-based Test for the Detection of ROS1 and RET Fusion Transcripts from Circulating Ribonucleic Acid Using Digital Polymerase Chain Reaction
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乳头甲状腺癌的放射转录组补充了目前的非侵入性风险分层系统

Dong Hyun Seo1, Eunjung Lee2, Jung Hyun Yoon3

  • 1Department of Internal Medicine, Open NBI Convergence Technology Research Laboratory, Yonsei University College of Medicine, Seoul 03722, South Korea.

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|August 29, 2025
PubMed
概括
此摘要是机器生成的。

一个新的放射性评分准确地预测了乳头甲状腺癌 (PTC) 的风险. 这种工具有助于分层患者,可能减少过度治疗,并指导积极监测以更好地治疗甲状腺癌.

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科学领域:

  • 癌症学
  • 放射学
  • 医学成像

背景情况:

  • 乳头甲状腺癌 (PTC) 通常具有良好的预后,但由于缺乏非侵入性风险评估工具,过度治疗是常见的.
  • 精确的手术前风险分层对于优化患者管理和避免不必要的干预至关重要.

研究的目的:

  • 开发和验证基于放射学的方法,以提高皮质甲状腺癌的手术前评估和风险分层.
  • 确定可靠的非侵入性工具来区分惰性和攻击性的PTC亚型.

主要方法:

  • 分析了255名PTC患者的成像特征,使用无监督的聚类来识别不同的瘤群体.
  • 使用内部和外部数据集构建和验证放射学分数.
  • 转录组分析以调查已识别的瘤集群的分子形状.

主要成果:

  • 鉴定出了三种不同的瘤集群,其中集群2具有良好的临床和分子特征.
  • 在预测有利的特征和治疗反应方面,放射性评分具有很高的诊断准确性 (AUC=0. 98).
  • 转录组分析显示了有利群体中的免疫激活和与生存相关的基因表达.

结论:

  • 经过验证的放射学分数提供了一个精确的,非侵入性的工具,用于PTC的手术前风险分层.
  • 这种方法可以帮助识别适合积极监测的患者,从而减少过度治疗.
  • 这些发现可以补充现有的诊断框架,以个性化治疗甲状腺癌.