Membrane potentials (V(m)) and intracellular calcium variations were studied in Lima bean (Phaseolus lunatus) leaves when the Mediterranean climbing cutworm (Spodoptera littoralis) was attacking the plants. In addition to the effect of the feeding insect the impact of several N-acyl Glns (volicitin, N-palmitoyl-Gln, N-linolenoyl-Gln) from the larval oral secretion was studied. The results showe...

A developmental "switch" in chloride transporters occurs in most neurons resulting in GABAA mediated hyperpolarization in the adult. However, several neuronal cell subtypes maintain primarily depolarizing responses to GABAA receptor activation. Among this group are gonadotropin-releasing hormone-1 (GnRH) neurons, which control puberty and reproduction. NKCC1 is the primary chloride accumulator ...

The aim of the work is to study effect anxiolytic fabomotizole (15 mg/kg, i.v.) on atrial depolarization in acute phase myocardial infarction using method synchronous multichannel cardioelectrochronotopography. Synchronous cardioelectrochronotopography was used sequence epicardium outbred rats during caused by ligation anterior branch left coronary artery with simultaneous administration σ1-rec...

BACKGROUND The potential nanocarrier polyamidoamine (PAMAM) generation 5 (G5-NH(2)) dendrimer has been shown to evoke lasting neuronal depolarization and cell death in a concentration-dependent manner. In this study we explored the early progression of G5-NH(2) action in brain tissue on neuronal and astroglial cells. RESULTS In order to describe early mechanisms of G5-NH(2) dendrimer action i...

Neuropeptide-mediated transmission was analyzed at Drosophila larval body-wall neuromuscular junctions. Focal application of vertebrate pituitary adenylyl cyclase-activating polypeptide (PACAP38) to the neuromuscular junction region triggered two temporally distinct muscle responses: an immediate depolarization followed by a large enhancement of K+ current. This late enhancement occurred many m...

it has been estimated that more than 1.7 million individuals suffer a traumatic brain injury (tbi) each year. tbi causes secondary biochemical and metabolic changes which contribute to subsequent tissue damage and associated neuronal cell death. two early and delayed events occur after tbi, which results in neurological deficits. primary injury events include the mechanical damage that occur at...

The transcription and transport of messenger RNA (mRNA) are critical steps in regulating the spatial and temporal components of gene expression, but it has not been possible to observe the dynamics of endogenous mRNA in primary mammalian tissues. We have developed a transgenic mouse in which all β-actin mRNA is fluorescently labeled. We found that β-actin mRNA in primary fibroblasts localizes p...