Antonio Yáñez

Learn More
UNLABELLED Long astroglial processes traversing several cortical laminae appear to be characteristic of primate brains. Whether interlaminar processes develop as a modification of radial glia or are truly postnatal elements stemming from stellate astroglia, could be assessed by analyzing their early developmental stages. A survey of glial fibrillar acidic(More)
Neuronal processing is classically conceptualized as dendritic input, somatic integration, and axonal output. The axon initial segment, the proposed site of action potential generation, usually emanates directly from the soma. However, we found that axons of hippocampal pyramidal cells frequently derive from a basal dendrite rather than from the soma. This(More)
At variance with the rat, previous observations disclosed the presence of long interlaminar astroglial processes in the cerebral cortex of adult nonhuman primates. To examine its presence in human cerebral cortex, samples of frontal and temporal cerebral cortices were obtained during programmed brain surgery from a young patient with an intraventricular(More)
In this study we assessed the influence of three different environmental salinities (5, 15 and 31 psu during 90 days) on growth, osmoregulation, energy metabolism and digestive capacity in juveniles of the Notothenioid fish Eleginops maclovinus. At the end of experimental time samples of plasma, liver, gill, intestine, kidney, skeletal muscle, stomach and(More)
At variance with the rodent, presence of long glial fibrillary acid protein-immunoreactive (GFAP-IR) astroglial processes traversing several cortical laminae (interlaminar processes) appears to be characteristic of the primate cerebral cortex. Their permanence or changes may constitute a significant factor in the functional alterations that develop after(More)
At variance with current descriptions stressing the stellate geometry of cortical astrocytes in the brain of adult mammals, GFAP-immunoreactive astrocytes from prefrontal and rostral cingulate cortices in two adult New World monkey species, Cebus apella and Saimiri sciureus, were found to have long cellular processes traversing several cortical lamina.(More)
The need to expand aquaculture production has led to other fish to be considered as potential species for culture, such as the sub-Antarctic notothenioid Eleginops maclovinus (Valenciennes, 1830). The aim of this study was to determine the cumulative effect of density and pathogen infection by protein extract of Piscirickettsia salmonis on skeletal muscle(More)
BACKGROUND Mycoplasma fermentans has been associated with rheumatoid arthritis. Recently, it was detected in the joints and blood of patients with rheumatoid arthritis, but it is not clear yet how the bacteria enter the body and reach the joints. The purpose of this study was to determine the ability of M. fermentans to induce experimental arthritis in(More)
Mycoplasma fermentans has been associated with respiratory, genitourinary tract infections and rheumatoid diseases but its role as pathogen is controversial. The purpose of this study was to probe that Mycoplasma fermentans is able to produce respiratory tract infection and migrate to several organs on an experimental infection model in hamsters. One(More)
Astroglial interlaminar processes are unique features of the cerebral cortex of adult primates, including man. The functional role of these processes in the primate cerebral cortex is largely unknown. The development and standardization of procedures that could maximize the utilization of primate brain samples is required for the experimental analysis of(More)