[Immunochemical determination of neurospecific beta 2-globulin in cerebrospinal fluid in mental disorders]. / Immunokhimicheskoe opredelenie neirospetsificheskogo beta 2-globulina v spinomozgovoi zhidkosti pri psikhicheskikh zabolevaniiakh.

Immunochemical identification of neurospecific beta 2-globulin (N beta G) in the cerebrospinal fluid (CSF) of mentally healthy subjects and mental patients showed its immunochemical identity in both group. A comparative immunochemical analysis revealed considerable differences in N beta G levels in the CSF in patients with neuropsychic diseases as compared with the control group. The content of N beta G was found to vary in different psychopathological syndromes. It is suggested that variations in N beta G levels in the CSF may be related to psychomotor activity.

[Effect of specific placental proteins--trophoblastic beta 1-glycoprotein chorionic alpha 1-microglobulin--on the proliferation of lymphocytes and malignant fibroblasts in vitro]. / Deistvie spetsificheskikh platsentarnykh belkov--trofoblasticheskogo beta 1-glikoproteida 1 khorionicheskogo al'fa 1-mikroglobulina--na profileratsiiu limfotsitov i zlokachestvennykh fibroblastov in vitro.

A study was made of the action of trophoblastic beta 1-glycoprotein (TBG) and chorionic alpha 1-microglobulin (CAG1) on proliferation of malignant fibroblasts (transplanted L line) and on phytohemagglutinin-stimulated lymphocytes. TBG depressed proliferation of the stimulated lymphocytes and transformed fibroblasts (according to 3H-thymidine incorporation). A dose-response dependence was ascertained. CAG1 did not affect cell division. The inhibitory effect of TBG was seen to be reversed or decreased provided the lymphocyte culture was supplemented with CAG1. The decreased inhibitory effect of TBG in the presence of CAG1 was also noted in the L cell culture. It is likely that in vivo protection of intensely proliferating fetal tissues or tumor from the inhibitors is effected just in this way since placental proteins are synthesized both by embryonic and tumorous cells.

[Biosynthesis and cellular localization of embryonal prealbumin in human embryonal tissues]. / Izuchenie biosinteza i kletochnoi lokalizatsii embrional'nogo preal'bumina v tkaniakh ploda cheloveka.

Immunofluorescent analysis of chorion sections and various embryonal tissues revealed localization of embryonal prealbumin (EPA) in the mesenchymal cells of the chorion, bones, umbilical cord, skin and in the cytoplasm of the epithelium distal part of the embryonal kidney canals. Synthesis of EPA slow peak in the suspension tissue culture of the chorion, umbilical cord and bones was shown. It is suggested that EPA is a mesenchyme product which is actively synthesized during the period of embryonal development. EPA is resynthesized and localized in the cells of tumors originated from the connective tissue. Cells of the tumors of non-connective origin did not contain EPA, whereas it was detected in the cells of the adjacent connective tissue. The phenomenon of embryonal reversion, probably, takes place not only in the "original" tumor cells but also in the surrounding connective tissues.