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Updated: Jan 16, 2026

Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications
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Integration of Miniaturized Solid Phase Extraction and LC-MS/MS Detection of 3-Nitrotyrosine in Human Urine for Clinical Applications

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以LC-ICP-MS为基础的L-氨酸化试验进行体外铁氧化酶抑制的评估:与AMPLEX超红色试验及其修改进行比较

Runze Liu1, Jiří Novák1, Jan Kuta1

  • 1Faculty of Science, RECETOX, Masaryk University, Kamenice 753/5, pavilion A29, 625 00, Brno, Czech Republic.

Archives of toxicology
|January 14, 2026
PubMed
概括

环境中的化学物质会破坏甲状腺激素 (TH) 系统. 氨酸化 (Tyr-I) 测定比Amplex UltraRed (AUR) 更敏感,用于检测甲状腺过氧化酶 (TPO) 抑制,这对于评估化学风险至关重要.

关键词:
它们是跨物种的.内分泌干扰 干扰内分泌系统过氧化过氧化过程甲状腺是什么?甲状腺是什么?铁酸的化.

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Redox Titration: Iodimetry and Iodometry

Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...
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Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...
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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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