Related Experiment Videos
Acquired protein S deficiency
1Zentrum für Innere Medizin, Justus Liebig Universität Giessen.
Insights
Hereditary and acquired deficiencies of protein S, a coagulation inhibitor, increase the risk of blood clots. Acquired deficiencies in conditions like nephrotic syndrome and malignancy contribute to this risk.
Area of Science:
- Coagulation science
- Hematology
- Thrombosis research
Background:
- Hereditary deficiencies in coagulation inhibitors (antithrombin III, protein C, protein S) are linked to increased thromboembolic events.
- Acquired protein S deficiencies have been identified in various disease states associated with frequent thromboembolic complications.
- These acquired deficiencies can be as significant as hereditary ones.
Purpose of the Study:
- To discuss disease states characterized by acquired protein S deficiency.
- To explore the mechanisms underlying acquired protein S alterations.
- To highlight the role of acquired protein S deficiency in thromboembolic complications.
Main Methods:
- Literature review of disease states with acquired protein S deficiency.
- Analysis of mechanisms causing protein S alterations in specific conditions.
- Correlation of acquired protein S deficiency with thromboembolic incidence.
Main Results:
- Acquired protein S deficiency is observed in nephrotic syndrome, acute phase reactions, malignancy, and pregnancy.
- These deficiencies contribute to the occurrence of thromboembolic complications in affected patients.
- The extent of acquired protein S deficiency can rival that of hereditary forms.
Conclusions:
- Acquired protein S deficiency is a significant factor in thromboembolic complications across various diseases.
- Understanding these acquired deficiencies is crucial for managing thrombotic risk.
- Further research into the mechanisms and management of acquired protein S deficiency is warranted.
Abstract:
Hereditary deficiencies of coagulation inhibitors like antithrombin III, protein C and protein S lead to an enhanced incidence of thromboembolic complications. Recently, acquired deficiencies of protein S were described in several disease states in which thromboembolic complications frequently occur. These acquired protein S deficiencies reach--in part--the extent realised by hereditary protein S deficiency. Thus, acquired protein S deficiencies seem to be one source of thromboembolic complications occurring in nephrotic syndrome, acute phase reactions, malignancy and pregnancy. In this presentation disease states accompanied by acquired protein S deficiency and the mechanisms leading to these alterations are discussed.