In 2019,Virchows Archiv included an article by Keelawat, Somboon; Bychkov, Andrey. Reference of 1-Iodopyrrolidine-2,5-dione. The article was titled 《Compact buds with biphasic differentiation and calcitonin-expressing neuroendocrine cells-previously unrecognized structures of thyroglossal duct unveiled by immunohistochemistry》. The information in the text is summarized as follows:
Immunophenotype of thyroglossal duct (TGD) cysts, including lining epithelium and thyroid remnants, is scarcely addressed in the literature. There is indirect evidence that C cells may be derived from progenitor cells of the midline thyroid primordium. This is supported by the recent concept of the endodermal origin of lateral thyroid anlagen and several case reports. We aimed to search for neuroendocrine cells in TGD cysts and to characterize immunophenotype of the thyroid follicles and epithelial lining of TGD. Out of 98 TGD cysts, 70% contained both cyst-lining epithelium and thyroid follicles, whereas 30% possessed only cyst-lining epithelium. Specimens eligible for immunohistochem. (n = 61) were stained for thyroid-specific and neuroendocrine markers. Thyroid remnants were pos. for thyroid transcription factor 1 (TTF-1) and other thyroid tissue-specific markers and neg. for calcitonin. TGD epithelium showed strong p63 positivity. We found that respiratory epithelium in 9.8% of TGDs contained neuroendocrine cells pos. for calcitonin, chromogranin A, and synaptophysin but neg. for carcinoembryonic antigen. In 44.2% of the cases, we detected compact buds, microscopic structures appearing as nests of epithelial cells with a biphasic population of basal (p63+) and central (TTF-1+) cells. Thyroid remnants in TGD expressed full spectrum of thyroid-specific markers and contained no C cells. Instead, calcitonin-expressing neuroendocrine cells were found among the respiratory epithelium of TGD. These cells can be a potential source of neuroendocrine tumors mimicking medullary carcinoma in median anlage derivatives We also discovered precursor compact buds with dual immunophenotype and proposed a concept of their morphogenesis. In the experimental materials used by the author, we found 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Reference of 1-Iodopyrrolidine-2,5-dione)
1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. Reference of 1-Iodopyrrolidine-2,5-dione
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com