Antithromboplastin
Definition
A chemical substance, circulating antibody, or physiological inhibitor capable of neutralizing or blocking the activity of thromboplastin (tissue factor III), halting the initiation of the extrinsic pathway of the blood coagulation cascade. In pathology, the presence of abnormal antithromboplastins (often associated with lupus anticoagulants or autoimmune diseases) induces severe laboratory test alterations, prolonging prothrombin time and disrupting normal hemostasis.
Bilingual Equivalents
- Antithromboplastin
- Thromboplastin inhibitor
Grammatical & Source Details
| Inflection Type | Feminine noun, regular feminine nominal declension with standard structural plural variations. |
| Formation | Prefixation combining the oppositional modifier 'anti-' with the clotting factor noun 'tromboplastină'. |
| Spelling / Pronunciation | [an.ti.trom.bo.plas.ˈti.nă] |
| Source | Stedman's Medical Dictionary and International Journal of Thrombosis and Haemostasis |
Contextual Usage Examples
RO: Prezența unei antitromboplastine circulante a provocat o alungire artificială a timpului de protrombină în analizele pacientului.
EN: The presence of a circulating antithromboplastin caused an artificial prolongation of the prothrombin time in the patient's analyses.
RO: Inhibitorul fiziologic numit TFPI funcționează ca o antitromboplastină naturală la nivelul endoteliului vascular afectat.
EN: The physiological inhibitor called TFPI functions as a natural antithromboplastin at the level of the injured vascular endothelium.
RO: Cercetările s-au concentrat pe izolarea unei antitromboplastine din veninul de șarpe pentru a dezvolta noi agenți anticoagulanți.
EN: Research focused on isolating an antithromboplastin from snake venom to develop new anticoagulant agents.
Idioms & Phrases
Antitromboplastină circulantă patologică / Pathological circulating antithromboplastin
RO: Autoanticorp dobândit care atacă fosfolipidele celulare, perturbând testele clinice ale coagulării.
EN: An acquired autoantibodythat attacks cellular phospholipids, disrupting clinical coagulation assays.
Inhibare prin antitromboplastină / Antithromboplastin inhibition
RO: Blocaj biochimic ce oprește fixarea factorului VIIa pe factorul tisular, prevenind activarea intravasculară exagerată.
EN: A biochemical blockage that arrests the binding of factor VIIa to tissue factor, preventing exaggerated intravascular activation.
Test de screening pentru antitromboplastină / Antithromboplastin screening assay
RO: Procedură specială de laborator bazată pe diluții plasmatice succesive utilizată pentru detectarea inhibitorilor lupici.
EN: A special laboratory procedure based on successive plasma dilutions used for the detection of lupus inhibitors.
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