The deprivation started immediately after stroke and lasted 7 days. This procedure, in control (non-stroke) animals, results in an enlargement of functional representation of the spared row, as shown with [14C]2-deoxyglucose uptake mapping. In mice with stroke induced by photothrombosis in the vicinity of the barrel cortex,
vibrissae deprivation did not result in an enlargement of the cortical representation of the spared row C of vibrissae, which confirmed our previous results. However, when mice were injected with the broad-spectrum inhibitor of MMPs FN-439 (10 mg/kg, i.v.) immediately before a stroke, an enlargement of the representation of the spared row similar to the enlargement found in sham mice was observed. These results indicate the involvement Ion Channel Ligand Library of MMPs in the impairment of use-dependent plasticity in the vicinity of an ischaemic lesion. “
“Estradiol and progesterone interact with the dopaminergic and other neurotransmitter systems that are involved
in the processing of rewards. On the systems level, these hormones modulate responses to stimulants as well as neuronal activity related to the anticipation of monetary gains. As different mechanisms might underlie the processing of gains and losses, the current study aims to investigate whether neural correlates of gain and loss anticipation are differentially RG7422 modulated by menstrual cycle phases. Therefore, young, naturally cycling women were examined by means of functional neuroimaging during performing a modified version of the ‘Monetary Incentive Delay’ task in the early follicular and in the luteal menstrual cycle phase. During the low hormone early follicular phase, the anticipation of high vs. low gains
and losses was associated with activity in a largely overlapping network of brain areas. However, high hormone levels in the luteal phase affected brain activity in these areas differentially during the anticipation of high vs. low gains and losses. In particular, the orbitofrontal cortex showed a reduced sensitivity to gain magnitude, whereas the ventral striatum and the anterior cingulate showed a reduced sensitivity to loss magnitude. In summary, the high amount of progesterone and estradiol in the luteal phase decreased activity Oxymatrine related to the anticipation of monetary gains and losses in different brain areas, suggesting that hormones modulate different processes during the anticipation of gain and loss magnitude. “
“During brain development, many factors influence the assembly and final positioning of cortical neurons, and this process is essential for proper circuit formation and normal brain function. Among many important extrinsic factors that guide the maturation of embryonic cortical neurons, the secreted neurotransmitter GABA has been proposed to influence both their migratory behaviour and their terminal differentiation.