[Occupational neurointoxications: patterns and mechanisms of formation].

The article covers results of long-standing study of clinical features of occupational neurointoxications in late period, and mechanisms underlying nervous system disorders in individuals working under long exposure to neurotoxic chemicals and in late period of occupational intoxications. With modern neurophysiologic, neuropsychologic, immunologic and biochemical diagnostic methods, the authors specified early manifestations of occupational disorders. Translation patterns of neurointoxications are specified.

[Main aspects of classification and course of occupational neurointoxication with toxic chemical complex in firemen].

The article covers results of long-standing research of peculiarities of psychoneurologic syndromes formation in firemen during distant period after intoxication with toxic chemical complex. The authors studied course, peculiarities of early manifestations of neurointoxication. Analysis of the data obtained helped to classify occupational intoxication with toxic chemical complex, considering the clinical peculiarities.

[Clinical cases of occupational chronic manganese intoxication].

Classic symptoms of manganese intoxication are very rarely seen nowadays. Clinic in Angarsk Research Institute for Occupational medicine and Human ecology registered two cases of stage I and II chronic manganese intoxication over 10 years among electric welders. The cases were diagnosed with consideration of long length of exposure to manganese with the ambient air level exceeding the MAC 1.5 times, the disease manifestation at middle age, high manganese level in serum and urine, characteristic neurologic symptoms in association with organic psychopathologic defects and polyneuropathy of limbs.

[False parasitic diseases]. / Mnimye parazitozy.

The paper deals with the topical problem of false parasitic diseases (FPD) in patients with various organic (somatic and mental) disorders. A classification of groups of FPD patients is given according to their clinical and social signs. Examples of 6 cases of FPD observed by the authors and those published in the literature are presented. Simple and effective recommendations on the management of FPD patients are given.

Morphology and tuber formation of in-vitro-grown potato plants harboring the yeast invertase gene and/or the rolC gene.

Growth and tuber formation of transgenic potato plants (Solanum tuberosum cv. Désirée) harboring the yeast invertase gene and the rolC gene individually or in combination under the transcriptional control of the patatin promoter were investigated under different conditions in vitro. Plants expressing only the invertase gene were morphologically similar to control plants. rolC transgenic plants had an increased tiller number, improved root growth, and a higher total biomass. Tuber formation and growth were altered by the introduced transgenes. The sucrose requirement to induce tubers was shifted to lower or higher concentrations for invertase- or rolC-expressing clones, respectively. In addition, rolC plants formed tubers of altered morphology. A comparison with soil-grown plants showed that morphological parameters can be predicted to some extent from in vitro studies, while for reliable prescreening of parameters concerning tuber formation and growth, an optimization of currently used protocols is necessary.

[Changes in the cytochemical activity of the lymphocytes to antigenic action. I. Lymphocyte dehyrogenases on the administration of bovine serum albumin and ram erythrocytes]. / Izmeneniia tsitokhimicheskoi aktivnosti limfotsitov pri antigennom vozdeistvii. Soobshchenie I. Degidrogenazy limfotsitov pri vvedenii bych'ego syvorotochnogo al'bumina i eritrotsitov barana.

A study of the changes in dehydrogenase level in lymphocytes after injection of different antigens--bovine serum albumin (BSA) and sheep red blood cells (SRBC) was made. The activity of succinate and alpha-glycerophosphate dehydrogenases altered during the first days after the antigens administration, but before the appearance of antibodies in the peripheral circulation. These changes were specific of BSA and SRBC, respectively.

[Regulation of flowering plants of different biotypes]. / Reguliatsiia tsveteniia u rastenii razlichnykh biotipov.

The patterns of control of flowering are analyzed in plants of different biotypes. The photoperiodic reaction of flowering taken as an example, the whole net of control is considered: from the environmental stimulus through its physiological transformation in the leaf in the corresponding hormonal impulse which, in turn, controls the realization of genetic programme and formation of generative organs in the stem buds. The photoperiodically neutral plants taken as an example, the patterns of age control of flowering are considered. In plants of different photoperiodic groups the synthesis of complementary components of florigen was shown to proceed either autonomously under the photoperiodic effect or under the inducing effect of definite photoperiods. The autonomous and inducible mechanisms of biosynthesis of the flowering hormones have a common base, the genetic system to which the environment sends its stimuli through the hormonal interactions. The interaction of hormonal and genetic developmental factors is considered, the evocation of flowering in the stem buds taken as an example.