Acquired Protein C and Protein S Deficiency in HIV-Infected Patients

Protein C and protein S deficiency - practical diagnostic issues.

Protein C (PC) and protein S (PS) are vitamin K-dependent glycoproteins, that act as natural anticoagulants. The proteolytic activation of PC by thrombin occurs on the surface of endothelial cells and involves thrombomodulin and endothelial PC receptor. In the presence of PS, phospholipids and calcium, activated PC (APC) inactivates membrane bound factors V (FVa) and FVIIIa by their cleavage at...

stroke in an infant; its association with antiphospholipid antibody and acquired protein c and s deficiencies

we present the first reported case of antiphospholipid syndrome with stroke in an iranian boy (7-month-old) who had two ischemic strokes within a period of 2 months. serum anticardiolipid antibody was positive and the patient had low levels of protein s and c. this case emphasizes the importance of antiphospholipid antibody in children with unexplained ischemic stroke.

Protein S antibodies in acquired protein S deficiencies.

protein c and s deficiency in deep vein thrombosis patients referred to iranian blood transfusion organization, kermanshah

introduction: normal homeostasis system has several inhibitor mechanisms in front of the amplifier’s natural clotting enzyme to prevent fibrin clots in the vessels. the main inhibitors of coagulation pathway are antithrombin (at), protein c and protein s. patients with hereditary deficiency of coagulation inhibitors are susceptible to venous thromboembolism (vte). one of the major clinical mani...

Lacunar infarction in child with Protein S deficiency: a case report

Abstract Arterial ischemic stroke defines as a new focal neurologic deficit that lasted 24 hours or longer. Stroke is relatively rare in children and incidence of cerebrovascular disease is 1 per 4000 in neonates and 1 per 7000 to 1 per 70000 in older children (1 month to 18 years). Protein S deficiency is one of the causes of the stroke in children. Major manifestations of protein S deficienc...