Structural organization of amygdaloid brain complex of the rat

Amygdala belong to the system of basal nuclei of telencephalon. Amygdala are a complicated structure based on both principles of grey matter organization: nuclear and screen-type, on its territory. Authors investigate into the structure of Amygdala using theory of Zavarzin A. As the result of this study, a classification of components of Amygdala into nuclei, paleocortical and intermediate formations, has been developed.     

Sex steroids and monoamines in the system of neuroendocrine regulation of amygdala functions

The aim of this review is a review of literature data, which characterize participation of monoamines brain systems and sex steroids in regulation (modulation) of the amygdalas' functions. Shown were characteristic noradrenergic, dopaminergic and serotoninergic systems and their representation in amygdala. Effect ofnoradrenaline, dopamine and serotonine on neurons of Amygdala was shown realized from appropriate cell receptors under modulated influence of sex steroids. Combined participation of monoamines and sex steroids occur in regulation of activity in cyclic centre of secretion and releasing of gonadotropins, constituted a base of forming adaptive (sexual, food and aggressive-defensive) behaviour, including stress reaction. The presented data could be used for understanding influence of gender factor on personality characteristics of humans, cognitive abilities and behavioural reactions, and also in application to development of optimal medicinal treatment of psychoneurological diseases.     

Ultrastructural characteristics of the reticular thalamic nucleus neurons in WAG/Rij rats

The aim of this study was to investigate the ultrastructure of the reticular thalamic nucleus (RTN) in rats of WAG/Rij strain, an established model for human absence epilepsy. Most RTN neurons are medium-to large-sized and have either dark or light appearance, depending on their functional state. Moreover, small-sized neurons with short axons are present, their characteristics being described for the first time.     

Neonatal androgenization of female rats during sex differentiation of the brain modifies neuronal organization of the amygdala complex

Sex differences in neuron dendroarchitectonics of the amygdala posterior cortical nucleus of adult rats were described for the first time using the Golgi method. Long-axon sparse-branched neurons in male rats possessed a larger number of primary dendrites, while female rats had long-axon dense-branched neurons with longer dendrites. Injection of testosterone propionate at 1250 g to females on day 5 after birth resulted in a greater number of primary dendrites of long-axon sparse branched neurons in adults, as compared to that in the control. Dendrites of long-axon sparse-branched neurons became much longer, thus enlarging the dendrite area.     

Hybrid Mode of Optical States in Opal-like Plasmonic-Photonic Crystals

Plasmonics - We present an investigation to ascertain the role of the hybrid Tamm-surface plasmonic-photonic mode of optical states in light transmission of opal-like metal-dielectric photonic...     

Morphogenetic effects of neonatal androgenization on neuron dendroarchitectonics in amygdala dorsomedial nucleus

Specific features of neuron dendroarchitectonics in the amygdale dorsomedial nucleus were described using the Golgi method after the injection of testosterone propionate at 1250 g to females on the fifth day after birth.     

"Dark" and "pale" cells of the amygdala complex in dynamics of the estrous cycle

Data on cytological peculiarities of dorsomedial nucleus neurones of the amygdala complex, one of the main zones of sexual dimorphism, in dynamics of estrous cycle are reported. We show that structural and functional characteristics of "dark" and "pale" cells may change depending on the concentrations of gonadal steroids in estrous and metaestrous stages. This specifies the previous hypothesis about mutual reorganization of these cells.     

Regulation of phenylacetic acid degradation genes of Burkholderia cenocepacia K56-2

Background  

Metabolically versatile soil bacteria Burkholderia cepacia complex (Bcc) have emerged as opportunistic pathogens, especially of cystic fibrosis (CF). Previously, we initiated the characterization of the phenylacetic acid (PA) degradation pathway in B. cenocepacia, a member of the Bcc, and demonstrated the necessity of a functional PA catabolic pathway for full virulence in Caenorhabditis elegans. In this study, we aimed to characterize regulatory elements and nutritional requirements that control the PA catabolic genes in B. cenocepacia K56-2.     

Generation of uniform low-temperature plasma in a pulsed non-self-sustained glow discharge with a large-area hollow cathode

Generation of plasma in a pulsed non-self-sustained glow discharge with a hollow cathode with an area of ≥2 m² at gas pressures of 0.4–1 Pa was studied experimentally. At an auxiliary arc-discharge current of 100 A and a main discharge voltage of 240 V, a pulse-periodic glow discharge with a current amplitude of 370 A, pulse duration of 340 μs, and repetition rate of 1 kHz was obtained. The possibility of creating a uniform gas-discharge plasma with a density of up to 10¹² cm^?3 and an electron temperature of 1 eV in a volume of >0.2 m³ was demonstrated. Such plasma can be efficiently used to treat material surfaces and generate pulsed ion beams with a current density of up to 15 mA/cm².