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  2. Levothyroxine - Wikipedia

    en.wikipedia.org/wiki/Levothyroxine

    Levothyroxine is a synthetic form of thyroxine (T 4), which is secreted by the thyroid gland. Levothyroxine and thyroxine are chemically identical: natural thyroxine is also in the "levo" chiral form, the difference is only in terminological preference. T 4 is biosynthesized from tyrosine. Approximately 5% of the US population suffers from over ...

  3. Sum activity of peripheral deiodinases - Wikipedia

    en.wikipedia.org/wiki/Sum_activity_of_peripheral...

    The sum activity of peripheral deiodinases (G D, also referred to as deiodination capacity, total deiodinase activity or, if calculated from levels of thyroid hormones, as SPINA-GD [a]) is the maximum amount of triiodothyronine produced per time-unit under conditions of substrate saturation. [1]

  4. Desiccated thyroid extract - Wikipedia

    en.wikipedia.org/wiki/Desiccated_thyroid_extract

    [citation needed] Dosage was regulated by improvement of symptoms. Desiccated Thyroid became a commercial treatment option in 1934 with Westhroid, [citation needed]. In the early 1960s, desiccated thyroid hormones (thyroid extract) began to be replaced by levothyroxine (synthetic T4), or by combinations of T4 and T3. Replacement occurred faster ...

  5. Deiodinase - Wikipedia

    en.wikipedia.org/wiki/Deiodinase

    In starvation or severe somatic stress, deiodinase type 1 is inhibited which lowers circulating levels of T 3 (due to it being the main source of peripherally converted T 3 from T 4 in the plasma), causing a decrease in the metabolic rate. [3]

  6. Thyroxine - Wikipedia

    en.wikipedia.org/wiki/Thyroxine

    Thyroxine, also known as T 4, is a hormone produced by the thyroid gland.It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T 3). [1]

  7. Common thyroid drug levothyroxine linked to bone mass loss - AOL

    www.aol.com/common-thyroid-drug-levothyroxine...

    Levothyroxine, a drug used to treat hypothyroidism, can lead to reduced bone mass and density in older adults with normal thyroid levels, a small cohort study has shown.