Un área de la clínica humana de gran interés biomédico es la del trasplante de órganos pues cada vez son más los pacientes que sufren un proceso degenerativo de un órgano concreto que obliga a sustituirlo. El principal problema que se plantea en este campo terapéutico es la escasez de órganos para ser trasplantados, pues a pesar de políticas muy activas para fomentar la donación de órganos, son...

Potassium channels are trans-membrane proteins, which selectively transport K+ ions across cell membranes and play a key role in regulating the physiology of excitability cells and signal transduction pathways. Bothutous Schach (BS) scorpion venom consists of several polypeptides that could modulate ion channels. In this study, the effects of BS crude venom on passive and active electrophysiolo...

The activity of the magnocellular neurons (MCNs) of supraoptic nucleus (SON) is regulated by a variety of excitatory and inhibitory inputs. Opioids are one of the important compounds that affect these inputs at SON synapses. In this study, whole-cell patch clamp recording of SON neurons was used to investigate the effect of acute and repeated morphine administration on spontaneous inhibitory an...

introduction: the magnocellular neurons (mcns) of the supraoptic nucleus (son) play a crucial role in control of physiological and pathophysiologiccal condition due to two peptides that they synthesize, i.e. oxytocin (oxt) and vasopressin (avp). the activity of mcns is regulated by a variety of excitatory and inhibitory inputs. opioid receptors are one of the important receptors in son synapses...

On the basis of patterns of anterograde, retrograde, and bi-directional transport of tracers from both the superior olivary nucleus (SON) and the torus semicircularis (TS), we report anatomical changes in brainstem connectivity across metamorphic development in the bullfrog, Rana catesbeiana. In early and late stages of larval development (Gosner stages 25-37), anterograde or bi-directional tra...

Sustainability of tundra vegetation under changing climate on the Yamal Peninsula, northwestern Siberia, home to the world’s largest area of reindeer husbandry, is of crucial importance to the local native community. An integrated investigation is needed for better understanding of the effects of soils, climate change and grazing on tundra vegetation in the Yamal region. In this study we applie...

Reiter's syndrome consists of a non-specific urethritis, conjunctivitis, polyarthritis, and a number of less constant features (Reiter, 1916). The cause of the urethritis is unknown but it is commonly regarded by venereologists as an infective condition of venereal origin. Although a yearly average of more than 12,000 cases of non-specific urethritis have been reported to the Ministry of Health...

The prohormone convertases (PCs) are processing enzymes that activate proproteins via cleavage at specific single or pairs of basic residues. The hypothalamic paraventricular nucleus (PVN) and supraoptic nucleus (SON) are primary sites of biosynthesis of several neuroendocrine hormone precursors, including provasopressin (pro-AVP), pro-oxytocin (pro-OT), and procorticotrophin-releasing hormone ...

mRNA-splicing presents an important regulatory step that contributes to the functional repertoire of all cell types and tissues. Profound changes in alternative splicing have also been revealed during embryonic stem cell (ESC) differentiation. Based on a genome-wide screen for pluripotency regulators, Ng and colleagues now identify SON as a new splicing regulator in the maintenance of human ESC...