ABSTRACT
The distribution of delta sleep-inducing peptide immunoreactive cell bodies, fibers, and terminal-like structures was investigated in the normal human hypothalamus during the first postnatal year, using immunohistofluorescence and peroxidase anti-peroxidase techniques. Immunolabeled perikarya were relatively few and were mostly scattered through the anterior (preoptic) and mediobasal regions (infundibular nucleus) of the hypothalamus. DSIP-immunoreactive fibers and terminal-like fibers were observed throughout the entire rostrocaudal extent of the hypothalamus. They exhibit high densities in the preoptic region, the organum vasculosum of lamina terminalis, infundibular nucleus and median eminence. Moderate to low densities of DSIP-immunoreactive fibers were observed in the other hypothalamic structures, located in the anterior and mediobasal regions of hypothalamus, such as periventricular, paraventricular, suprachiasmatic, ventromedial, dorsomedial and parafornical nuclei. In the present study, the analysis of the immunohistochemical pattern of DSIP-immunoreactive neuronal elements in the human infant hypothalamus during the first postnatal year provided evidence of the presence of several differences. We have found qualitative age-related changes in the density of DSIP immunoreactivity in several hypothalamic structures such as the anterior region and the median eminence.
Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Delta Sleep-Inducing Peptide/metabolism , Hypothalamus/metabolism , Fluorescent Antibody Technique, Indirect/methods , Hypothalamus/immunology , Immunoenzyme Techniques/methods , NeuronsABSTRACT
Se efectuó la curva de cortisol en 32 individuos sanos con edad promedio de 38.7 años, siendo la cifra matutina de las ocho horas de 10 mg/100ml o mayor. Posteriormente, se realizó el mismo estudio a 42 enfermos, edad promedio 41.4 años, que estaban bajo corticoterapia mayor de 10 mg diarios de prednisona durante as de tres meses en forma ininterrunpida y la cual se suspendió 48 h previas al estudio. Se encontró que 27 de ellos (64.2 por ciento) tenían cifras de cortisol matutino menores a las del grupo testigo y los enfermos de artritis reumatoide eran de los de enfermedad sistémica podría ser un factor más en la supresión del eje H-H-A de los pacientes bajo dosis mayor de 10 mg de prednisona en duración mayor de tres meses continuos