introduction: there is considerable evidence that glutamate-mediated excitatory neurotransmission plays an important role in mediating the behavioral actions of acutely administered ethanol. the aim of the present study was to investigate the effect of acute ethanol exposure on nr1 subunit of nmda (n-methyl-d-aspartate) receptor distribution in the cerebral cortex of chick embryo on the 10th an...

Development of intercellular junctions in duodenal epithelium in the chick embryo was studied by electron microscopy using the thin-section and freeze-fracture techniques. Incomplete tight junctions are already seen in 6 and 7 day old embryos at the apical portion of the lateral plasma membrance, and consist of 1-7 strands, their mean depth measuring 0.2 micron. This corresponds to a "very leak...

We tested the possibility of inducing ectopic expression of the gene Engrailed-2 (En-2) in the rhombomeres of the 2-days-old chick embryo. The experimental procedure consisted of grafting En-2-expressing neuroepithelium (prospective isthmocerebellum) from a quail or a mouse embryo into different rostrocaudal levels in the hindbrain of a host chick embryo. The graft replaced a given excised host...

Five series of experiments were accomplished, utilizing a total of 190 birds. The established methods of the department's atherosclerosis research team were followed throughout. One-day old Hy-Line chicks were obtained from a commercial hatchery and reared in a battery brooder on a diet of commercial chick starter mash. At onset of the study, the birds were divided into experimental groups and ...

Six-day-old chick skeletal muscle (extensor digitorum longus) was incubated in the presence of corticosterone (CTC; 0, 3, 30, and 300 ng/ml) for 2 h at 37 degrees C. Tyrosine and N (tau)-methylhistidine releases, as indices of total muscle and myofibrillar proteolysis, were increased by CTC but with different dose responses, indicating an independent regulation of myofibrillar and non-myofibril...

background & aim: ferulago angulata sub. carduchorum (locally name: chavir or chavil) is an important medicinal plant in iran. the powder of aerial parts of this plant contains variety of components with different therapeutical effects such as antioxidant activities (aoa). this study was conducted to investigate the effect of dietary supplementation powder of aerial parts of this plant on t...

We have employed a highly specific in situ hybridization protocol that allows differential detection of mRNAs of collagen types I and II in paraffin sections from chick embryo tissues. All probes were cDNA restriction fragments encoding portions of the C-propeptide region of the pro alpha-chain, and some of the fragments also encoded the 3'-untranslated region of mRNAs of either type I or type ...

Studies on sex-specific segregation in foraging behaviour and trophic niche have been focussed large dimorphic seabirds, with less information small monomorphic species. Here, we used mini-GPS loggers, habitat suitability models, stable isotopes to assess sex differences the movements, spatial distribution, ecology of Boyd’s shearwaters Puffinus lherminieri boydi Raso Islet (16°36’ N, 24°35’ W)...