Acquired protein S deficiency.

Protein S antibodies in acquired protein S deficiencies.

Acquired protein S deficiency in a patient with systemic lupus erythematosus causing central retinal vein thrombosis.

A 16 year old girl with systemic lupus erythematosus (SLE) developed the rare complication of central retinal vein occlusion. Although classically a disease of older patients, it has been recognised in association with SLE but only in the presence of the lupus anticoagulant or antiphospholipid antibodies. The thrombosis occurred when free protein S concentrations were transiently reduced and th...

Acquired free protein S deficiency in children with steroid resistant nephrosis.

Plasma and urine concentrations of protein S were measured in five children with steroid-resistant nephrotic syndrome. It was found that plasma free protein S was reduced in three out of the five patients studied. Thus, acquired free protein S deficiency does occur in children with nephrotic syndrome and is one of many factors which may place them at risk for a thromboembolic event.

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...

Molecular basis of protein S deficiency.

Protein S deficiency (PSD) has been the most difficult to study among the classical inherited thrombophilic factors. This is in part due to the peculiar biology of protein S (PS), which has an anticoagulant role but no enzymatic activity, and because it interacts with plasma components that function in both haemostasis and inflammation. Clinically, it also has been difficult to define and stand...