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Certain receptive field properties of cortical neurons depend upon inhibitory, GABAergic inputs. In the somatosensory cortex, iontophoresis of bicuculline, a GABAA receptor blocker, results in enlargement of receptive fields. However, bicuculline's effectiveness in changing receptive field size varies with the neuron's adaptation characteristics, location(More)
BACKGROUND Heparin/heparan sulfate (HS) proteoglycans are found in the extracellular matrix (ECM) and on the cell surface. A considerable body of evidence has established that heparin and heparan sulfate proteoglycans (HSPGs) interact with numerous protein ligands including fibroblast growth factors, vascular endothelial growth factor (VEGF), cytokines, and(More)
The distribution and time course of Fos expression in neurons in the central nucleus of the amygdala (CeA) were studied in endotoxemic rats in two separate experiments. In each case, the severity of the endotoxin (lipopolysaccharide; LPS) challenge was characterized by using physiological outcome variables, including blood pressure and heart rate.(More)
Adaptation to infectious diseases or models of infectious diseases such as immune stimulation with exogenous administration of bacterial lipopolysaccharide (LPS) or cytokines involve complex autonomic, endocrine, and behavioral responses mediated by the central nervous system. The purpose of this study is to determine the neural pathways from the brainstem(More)
The primary somatosensory (SI) cortex in the cat contains four cytoarchitectonic areas that appear to contain separate body representations and have different functions. We tested whether functional differences among these areas are reflected in the densities of neurons containing each of three calcium-binding proteins: parvalbumin (PV), calbindin (CB), and(More)
Inhibition in primary sensory cortex plays a role in neuronal responses to peripheral stimuli. For many neurons in cat primary somatosensory cortex, blockade of GABAA receptors by bicuculline results in receptive field enlargement. The magnitude of this effect varies with the neuron's adaptation characteristics and its location in particular laminae and(More)
The acetylcholinesterase inhibitor neostigmine (2 microg) was microinjected into the lateral cerebral ventricle (i.c.v.) of unanesthetized rats to activate central cholinergic receptors. Changes in arterial blood pressure were correlated with changes in Fos-like immunoreactivity in the hypothalamus and forebrain following cholinergic stimulation.(More)
Amidine-substituted phenylbenzimidazoles are well-established DNA-binding structural motifs that have contributed to the development of diverse classes of DNA-targeted agents; this ring system not only assists in increasing the overall DNA affinity of an agent, but can also influence its site selectivity. Seeking a means to conveniently exploit these(More)
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