[Prothrombotic disturbances in children after ischemic stroke].
Thirty-six patients with stroke, aged from 8 months to 15 years, and 28 control children, aged 1-15 years, were studied. In both groups, the evaluation of anamnesis, neurologic status and genotyping for 11 most common prothrombotic polymorphisms were carried out. Coagulogram tests and measurement of homocysteine were performed before the anticoagulant therapy in the main group. The total frequency of prothrombin gene mutations (G20210A, factor V Leiden, MTHFR C677T and MTRR A66G) was 2.8 times higher in the main group compared to the control one. The most frequent genotypes were 677TT (8.3% of cases) and 66GG (30.6%). In patients with stroke, the homocysteine level exceeded the upper limit of normal age and also was significantly elevated in carriers of abovementioned risk genotypes: 10.29 +/- 1.55 mcmol/l vs 7.33 +/- 0.6 mcmol/l (p = 0.018). The coagulogram revealed disorders of anticoagulant system, including the decrease of protein C activity (22.7% of cases), protein S activity (13.6%) and antithrombin III (12.5%) and the increase of D-dimer level (21% of cases). It has been suggested to screen for common prothrombotic states and measure homocysteine levels in children with ischemic stroke and to lower homocysteine levels by using vitamins B6 and B12' and diet.
Zykov
V P
VP
Komarova
I B
IB
Vasil'ev
S A
SA
Ushakova
L V
LV
Chuchin
M Iu
MIu
Netesova
E V
EV
D000293:Adolescent; D001779:Blood Coagulation Factors / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D006710:Homocysteine / Q000097:blood*; D006801:Humans; D007223:Infant; D011110:Polymorphism, Genetic; D011516:Prothrombin / Q000235:genetics; D020521:Stroke / Q000175:diagnosis* / Q000209:etiology / Q000235:genetics*; D019851:Thrombophilia / Q000150:complications / Q000175:diagnosis* / Q000235:genetics*
D001779:Blood Coagulation Factors; D006710:Homocysteine; D011516:Prothrombin