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Biomedical subjects

N A Danilova

Publications and source records attributed to N A Danilova.

5 recordsLinked to original sources

[Role of hormonal factors in the regulation of bone tissue metabolism in children with cerebral palsy].

In the article are presented the results of examination of 98 patients (aged 6-16 years) with infantile cerebral paralysis. There were used X-ray and radioimmune investigations of bone age, enchondral ossification, state of foot bone structure and blood concentration of "osteotropic" hormones. Bone age corresponded mainly to the passport one; ossification rate overtake and deceleration have been revealed in a third of the examined children and concentric atrophy in 30% patients. Structural disturbances of osseous tissue as the different forms of osteoporosis have been detected in 89.5% cases. There have been stated direct correlation between the frequency of disturbances and the form of infantile cerebral paralysis. There have been noted reliable increase of hydrocortisone level and significant decrease of somatotropic hormone concentration (by 70% and 3.5-3.7 times as compared with the control) and sexual differences in concentrations of osteotropic hormones. The results are discussed from the point of view of neurohumoral relation disturbances and the presence of vegetative dystonia syndrome with predominance of sympathetic-adrenal system activity.

Adolescent

[Anticomplement activity of native dextrans].

An anticomplementary activity of native dextrans of various structure was studied among the nine dextrans studied, eight polymers exhibited the anticomplementary activity of variable magnitude; only one dextran, containing 95% of 1--6 links and 2% of 1--2 links was unactive. The highest activity was exhibited by dextrans with high content of 1--2 links; lower activity was observed in dextrans, containing high amount of 1--3 links. The anticomplementary activity was not found in partially hydrolyzed dextrans, containing 90% and more links of the 1--6 type, with molecular weight of 2-10(6) daltons and lower. Polyaldehydes, obtained from these dextrans by oxidation with iodic acid, acquired the anticomplementary activity, comparable with the activity of native dextrans.

Animals