Neurons in Rexed's laminae III-V of an isolated spinal cord-skin patch preparation from hamsters were recorded in whole-cell mode and stained intracellularly with biocytin. Evidence of inhibitory synaptic function was obtained via post-hoc immunofluorescent labeling with a monoclonal antibody directed against an axon terminal isoform of brain glutamic acid… (More)
The interaction of gallamine with muscarinic receptor subtypes was examined using radioligand binding studies. In competition studies using [3H]N-methylscopolamine [( 3H]NMS), gallamine displayed high affinity for the rat cardiac and guinea-pig uterine M2 muscarinic receptors and for the atypical muscarinic receptor present in chicken heart. Gallamine… (More)
Depressed immune function is well documented in protein calorie malnutrition (PCM). Also, central noradrenergic hyperactivity has recently been reported in malnourished animals. Increase in central noradrenaline activity could be responsible for cell-mediated immune depression. The present study is designed to address this hypothesis by testing whether… (More)
Previous findings from our laboratories indicate that the intracranial injection of apotransferrin (aTf) in neonatal rats produces an accelerated oligodendrocyte maturation and an enhanced production and deposition of myelin membranes in the brain. To evaluate the anatomical distribution and the morphological characteristics of the myelin in these rats, we… (More)
The tridecapeptide neurotensin (NT), injected intracerebroventricularly in rats, induced a naloxone-insensitive and dose-dependent analgesia (tail-flick test), the ED50 being 3.22 nmol/animal. Higher doses induced a dose-dependent respiratory depression, mostly accounted for by a reduction of frequency; the ED50 for this action was 144.6 nmol/animal. In… (More)
Depressed immune response is well documented in protein-calorie malnutrition (PCM). Also, central and peripheral noradrenaline (NA) activities have been reported to be increased in malnourished animals. Since increases in central and peripheral NA may inhibit immune function, it is possible that malnutrition-induced immunodepression could be mediated by… (More)
A staining procedure using celestine blue and chromotrope 2R for Lowicryl K4M embedded tissues is presented. The stain produces a reliable multichromatic stain for light microscopy on Lowicryl embedded semithin sections.