[Metabolism of catecholamines in children with attention deficit syndrome with hyperactivity].

Unlabelled: The aim of research was to study catecholamine excretion peculiarities of the children with attention deficit hyperactivity disorder (ADHD). 25 children at the age of 7-9 years took part in this research. High-pressure liquid chromatography (HPLC) was used for measuring the content of catecholamine.

[The characteristics of the personality interrelations of adolescents with different forms of secondary arterial hypertension].

Interpersonality relations and conflict situations were studied in patients who need psychological correction. In patients with symptomatic arterial hypertension, the degree of dissatisfaction was estimated according to the following three scales: educational ("Conflict Situations at School" including conflicts with friends); family and household ("Conflict Situations in the Family"); and "Internal Disputed Matters". The patients with symptomatic arterial hypertension of the nephrogenous and endocrine genesis may turn out more conflicting since they are trying to discover the cause of their life failures in their social surrounding rather than in their personal inability to cope with them because of the disease.

[Renal prostaglandins of children and adolescents with nephrogenic arterial hypertension].

Renal prostaglandin activity was assessed in children and adolescents with two forms of secondary (nephrogenic) arterial hypertension: vasorenal and chronic pyelonephritis-associated hypertension. Children with vasorenal hypertension showed renal PG changes, dependent on the duration of the disease. Positive correlation between arterial BP and PGF2 excretion, and negative correlation between PGE excretion and arterial BP are suggestive of the involvement of the renal PG system in vasorenal hypertension.

[The renin-angiotensin-aldosterone system in children and adolescents with nephrogenic hypertension].

Renin-angiotensin-aldosterone (RAA) function was studied in children with secondary hypertension of 2 varieties: vasorenal hypertension (VRH) and arterial hypertension (AH) associated with chronic pyelonephritis. Children with VRH showed RAA activation that depended on the duration of the disease for its markedness. A direct correlation found between ABP, on the one hand, and plasma renin activity and blood aldosterone level, on the other, is evidence of the latter's involvement in VRH pathogenesis.

[Late results of surgical treatment of renovascular hypertension in children and adolescents].

Remote results of the surgical treatment of vasorenal hypertension in children and juveniles have been analyzed with special reference to etiology and kind of operative procedures. Good results were obtained after reconstructive operations.

[Age-related changes in prostacyclin and thromboxane B2 biosynthesis under normal conditions and in arterial hypertension].

An experimental radioisotopic study in normotensive male Wistar rats and spontaneously-hypertensive rats (SHR) of Okamoto--Aoki line demonstrated an age-related increase in the biosynthesis of prostacycline (PGI2) from 14C-arachidonic acid by pulmonary and aortal tissues of animals with normal arterial pressure. In SHRs, PGI2 production by lung homogenates did not change essentially with age, but decreased considerably in adult SHRs with stable hypertension. PGI2 biosynthesis by SHR's aortal tissue decreased with age and dropped significantly as arterial hypertension developed.