Metabolic and hormonal parameters of humans during long-term hyperbaric exposure (the recompression treatment table)]

Several metabolic and hormonal parameters were evaluated in blood of two human subjects during simulation of an extended saturation dive. Increases in creatine kinase and an upward trend in cholesterol and glucose were observed after decompression. The levels of TTH and thyroxin went up in both subjects during exposure. The significant changes in cortisol, ACTH, insulin and C-peptide were a fingerprint of stress-reaction. After eight days of recovery most of the parameters returned to baseline values. The investigation suggests that the recompression treatment table did not cause pathological changes in the biochemical and hormonal parameters of humans.     

An estimate of phylogenetic relationships among culicine mosquitoes using a restriction map of the rDNA cistron

Restriction maps of the rDNA cistron of twelve species of mosquitoes in six genera of the subfamily Culicinae were constructed using eight 6 bp recognition restriction enzymes. Anopheles albimanus was used as an outgroup. The size of the rDNA cistron ranged from 8.5 kb in Aedes katherinensis to 12.9 kb in Ae. polynesiensis. A total of twenty-six sites were scored; eighteen were polymorphic among ingroup taxa. The proportion of polymorphic nucleotide sites (Pnuc) was 0.059 and the heterozygosity per nucleotide site (Hnuc) was 0.028. Wagner and Fitch Parsimony, Dollo Parsimony and Nei-Li distance/neighbour-joining methods were used to construct phylogenetic trees. The rDNA RFLP dataset did not provide a well-supported phylogeny among culicine taxa. The RFLP phylogenies are incongruent with the morphology character based and molecular phylogenies and derived relationships did not correspond with current taxonomic classifications. The lack of resolution was due to homoplasy arising from frequent independent loss or gain of restriction sites among unrelated taxa.     

Alterations of cortical neurons and their dendrites after chronic alcohol intoxication

Alterations occurring in the neurons of rat sensorimotor cortex 1, 2, and 4 months after a 4-month alcohol intoxication and 1 and 4 months after a 1-year alcoholization are studied by the methods of Nissl and Golgi. Pronounced dystrophic changes in cortical neurons and dendrites as well as reparative processes in the cell body are revealed 1 month after a 4-month intoxication. The recovery period for the upper cortical layer neurons (phylogenetically younger) is faster than that of neurons from the lower layers (phylogenetically older), as well as that of hypochromatousvs. hyperchromatous cells. Normalization of dendrite structure is slower than that of the cell body. Four months after a 1-year alcohol intoxication the structure of cortical neurons and dendrites is not restored. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 122, No. 10, pp. 467–470, October, 1996     

Fractionation of a chalone-containing preparation from Ehrlich's ascites tumor by high performance liquid chromatography

Department of Biology, Medico-Biological Faculty, and Applied Research Laboratory of Ecology, Toxicology, and Metabolism of Medicinal Preparations, attached to the Department of Biochemistry, Medico-Biological Faculty, N. I. Pirogov Second Moscow Medical Institute. Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 112, No. 10, pp. 418–419, October, 1991.     

An automated technique for measuring the area of contrasted bronchi

Central Scientific-Research Institute for Tuberculosis. Institute for Problems of Information Transmission, Moscow. Translated from Meditsinskaya Tekhnika, No. 3, pp. 30–32, May–June, 1992.