Hematoidin
WebNational Center for Biotechnology Information WebHemosiderin granules and hematoidin crystals in macrophages: Macrophages remove cellular debris such as RBCs (Red Blood Cells) from CSF (cerebrospinal fluid). • They are seen after 2-4 hours of RBC entry to CSF and they engulf the RBC. • Degradation of engulfed RBCs causes appearance of dark blue or black iron that contains hemosiderin …
Hematoidin
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WebHematoidin crystals (HC) are found in tissues where extravasated erythrocytes undergo degradation. Previous studies have determined that hematoidin is composed, in part, of a bilirubin-like pigment. In a previous study (Papadimitriou and Drachenberg, Ultrastruct. Pathol. 16, 413-421, 1992), we demon … WebThe presence of hematoidin crystals is not an uncommon finding in cytologic specimens, particularly those obtained by fine needle aspiration of walled-off, necrotizing lesions with a component of hemorrhage. It is a very unusual finding in cervicovaginal smears, probably because of the ability of the uterus to promptly rid itself of blood. ...
WebJun 4, 2015 · Hematoidin is a hemoglobin degradation product biochemically similar to unconjugated bilirubin, which can be present both as extracellular and/or intracellular … Webadjective. he· ma· toid. variants or chiefly British haematoid. ˈhē-mə-ˌtȯid also ˈhem-ə-. : resembling blood.
Webin the formation of hemosiderin or hematoidin, or both; (3) that proteolytic enzymes split hemoglobin into proteid and hematin; and finally, (4) that the hydrolytic cleavage of hematin, by splitting off the iron, results in the formation of a pigment (hematoporphy- tin) essentially the same as hematoidin. WebMacrophages ingest RBCs and erythrophages (top image) may be observed on the stained CSF smear. As the RBCs degenerate further, the breakdown products are seen in the phagocytic cells as dark, granular, iron-laden hemosiderin deposits (blue arrows in bottom image) or yellow crystalline iron-free hematoidin crystals (red arrows, bottom image).
WebHematoidin is formed intracellularly, presumably within reticuloendothelial cells, but is often found extracellularly after 5-7 days in foci of previous hemorrhage. It occurs as refractile, …
WebHematoidin is formed intracellularly, presumably within reticuloendothelial cells, but is often found extracellularly after 5-7 days in foci of previous hemorrhage. It occurs as refractile, … hyperhidrose symptomeWebSep 4, 2024 · What are Hematoidin crystals? Hematoidin has a golden-brown crystalline pigmentation and is composed of thread-like filaments arranged in star-shaped clusters akin to a Medusa’s head. Hematoidin forms when erythrocyte extravasation occurs in a closed tissue compartment and is a result of hemoglobin metabolism under low oxygen tension … hyperhidrose laborWebGeneral description. Bilirubin, also known as hematoidin, is a degradation product formed as a result of heme catabolism in the liver. Bilirubin circulates in the blood stream as either the unconjugated insoluble form (indirect bilirubin) or the soluble glucuronide-conjugated form (direct bilirubin). Conjugated bilirubin moves from the bile ... hyperhidrose solutionsWebNov 13, 2024 · Hematoidin noun. (obsolete) bilirubin. Bilirubin noun. A reddish yellow pigment present in human bile, and in that from carnivorous and herbivorous animals; … hyper hideWebresound是什么意思,resound的解释：vi. 回响, 鸣响, 反响, 驰名, 被传遍vt. 使回响, 传颂词型变化：副词:resoundingly 形容词:resoun，resound中英例句，英汉词典。 hyperhidrose cremeWebNov 25, 2013 · Hematoidin crystals in cervicovaginal smears: review of 27 cases seen in one year. Acta Cytol. 1983;27:237-240. PubMed. ISI. Google Scholar. View full text Download PDF. Cite article Cite article. Cite article COPY CITATION OR. Download to reference manager. hyperhidrose hamburgWebFeb 1, 2001 · Hematoidin is a product of heme metabolism that is deposited in tissues under low oxygen tension in association with blood extravasation [12,13]. In contrast to … hyperhidrosis advocacy groups