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Biomedical subjects

T E Popova

Publications and source records attributed to T E Popova.

7 recordsLinked to original sources
PubMed2000

[The status of cerebral hemodynamics in patients with vertebro-basilar insufficiency syndrome].

The state of venous and arterial cerebral hemodynamics was studied using ultrasonic dopplerography with application of hypo- and hypercapnia, angioencephaloscintigraphy with pertecnetate Tc-99m in 48 patients with syndrome of vertebrobasilar insufficiency. Estimation was performed in patients by the results of neurological and otoneurologic evidence, the data of nistagmography and registration of the truncal evoked potentials. It was found that at early stages of the development of vertebrobasilar insufficiency's syndrome disorders of vasomotor reactivity and disturbances in venous hemodynamics play a leading role in its pathogenesis. Stenosis damages of extra- and intracranial arteries become dominating in subsequent clinical picture.

Adult↗
PubMedDate not supplied

Microbiological synthesis of protein. State of the problem and developmental trends.

While the share of protein from unicellular organisms is but a small fraction of total protein production, the methods of microbiologic production appear rather promising and have been greatly developed in the last 10-15 years. The author discusses technologic methods for obtaining protein from unicellular organisms, questions of selecting the raw material and the producers used in these processes, and the fields for use of the product obtained. The range of suitable taxonomic groups of microorganisms and of substrates for these processes has lately been broadened. Attention has been focussed on the use of renewable feedstock and of industrial wastes (cellulose-containing materials, etc.). Use of the latter for microbiologic synthesis could produce enough protein to make up for the global deficit in protein. The author also discusses questions of improving, enlarging, and automating the equipment suitable for these processes.

Animal Feed↗
PubMedDate not supplied

[The cultural and morphological properties of different serovariants of Pasteurella multocida when cultured in nutrient broths of different compositions].

The results of the study of the cultural morphological properties and growth dynamics of P. multocida, serotypes A, B, D, in the course of cultivation in liquid media are presented. The bacteria were grown in synthetic nutrient medium 199 and Hottinger broth. The influence of glucose at different concentrations on the growth activity of P. multocida in the synthetic medium was established. The process of the accumulation of surface (capsular) antigens in culture fluid was studied. The levels of the titers of surface antigens were shown to depend on the growth phases of bacteria.

Antigens, Bacterial↗
PubMedDate not supplied

[Capsule formation in Pasteurella multocida, serovar A].

In this work the process of capsule formation in P.multocida bovine strain, serovar A, has been studied. The cultures were grown on liquid and solid nutrient media prepared on the basis of Hottinger hydrolysate and synthetic culture medium 199. Extracellular material was detected by the method electron cytochemistry with ruthenium red and polycationic ferritin. As revealed by specific staining and labeling, P.multocida capsule of serovar A was found to contain material of the polysaccharide nature. But the capsular structures of obtained from agar-grown and broth cultures were different. The capsular layer on the surface of cells grown in Hottinger's broth was found to be more pronounced.

Animals↗