Argentaffin
Definition
A structural property of certain biological cells, granules, or tissues to directly reduce silver salts from solutions and stain intensely brown or black, without requiring the addition of an external reducing agent. In a medical sense, the term specifically describes neuroendocrine cells within the gastrointestinal mucosa that synthesize and store serotonin, playing a key role in regulating motility.
Bilingual Equivalents
- Argentaffin
- Silver-reducing
Grammatical & Source Details
| Inflection Type | Variable adjective with standard masculine, feminine, and structural plural variations. |
| Formation | Scientific term derived from the Latin roots for silver and affinity, indicating autonomous chemical reduction. |
| Spelling / Pronunciation | [ɑːr.ˈdʒen.tə.fɪn] |
| Source | Stedman's Medical Dictionary and International Histopathology Lexicon |
Contextual Usage Examples
RO: Patologul a identificat o tumoră carcinoidă formată din celule cu granule de tip argentafin sub mucoasa apendicelui.
EN: The pathologist identified a carcinoid tumor made of cells with argentafin-type granules beneath the appendiceal mucosa.
RO: Reacția chimică s-a dovedit a fi pozitivă, demonstrând structura intens argentafină a țesutului analizat.
EN: The chemical reaction proved to be positive, demonstrating the intensely argentafin structure of the analyzed tissue.
RO: Spre deosebire de celulele argirofile, o celulă argentafină nu are nevoie de un revelator chimic pentru a precipita argintul.
EN: Unlike argyrophilic cells, an argentafin cell does not need a chemical developer to precipitate silver.
Idioms & Phrases
Celulă argentafină / Argentaffin cell
RO: Celulă endocrină specializată localizată în epiteliul digestiv, responsabilă de producerea și eliberarea de hormoni.
EN: A specialized endocrine cell located in the digestive epithelium, responsible for producing and releasing hormones.
Granulație argentafină / Argentaffin granulation
RO: Prezența în citoplasmă a unor vezicule minuscule pline cu amine biogene care reacționează specific cu ionii de argint.
EN: The presence in the cytoplasm of tiny vesicles filled with biogenic amines that react specifically with silver ions.
Colorație argentafină / Argentaffin stain
RO: Metodă de laborator utilizată în histopatologie pentru evidențierea selectivă a tumorilor din sistemul endocrin difuz.
EN: A laboratory method used in histopathology to selectively highlight tumors of the diffuse endocrine system.
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