Browse Items (158 total)

1. Male Sprague-Dawley rats were chronically tested with intrathecal (i.t.) receptor selective opioid antagonists to determine if antinociceptive supersensitivity developed to selective i.t. opioid receptor agonists. 2. A subcutaneously implanted…

In rats, restraint exposure potentiates the magnitude and duration of analgesia following both the peripheral and intracerebroventricular administration of several opioid agonists as compared to non-stressed controls. It has been suggested that the…

This study was designed to determine the influence of the hypothalamus on the content of vasoactive intestinal peptide (VIP) in the anterior pituitary. Disruption of the hypothalamic-pituitary connection was performed by ablating the arcuate-median…

Whether afferents exert their morphogenetic influence on spindles through release of trophic factors at intrafusal fiber junctions or via participation in proprioceptive pathways which modulate the motor activity to muscles was investigated by…

Ischemic heart disease is still the leading cause of death even with the advancement of pharmaceutical therapies and surgical procedures. Early vascularization in the ischemic heart is critical for a better outcome. Although stem cell therapy has…

We examined the effect of L-dihydroxyphenylalanine (L-DOPA) infusion in vitro upon dopamine (DA) and dihydroxyphenylacetic acid (DOPAC) output from superfused corpus striatum of vehicle and reserpine or tetrabenazine (TBZ) treated male rats.…

Monoamine-activated alpha-2-macroglobulin (alpha 2M) has been shown to decrease the dopamine concentrations in rat caudate putamen (CP) in vivo as well as inhibit choline acetyltransferase activities in the culture of basal forebrain neurons. In this…

The neuropeptide calcitonin gene-related peptide (CGRP) may play a role in neurogenic inflammation, tissue remodeling of the uterine cervix, promoting vasodilation, parturition, and processing of sensory information in the spinal cord.…

Lateral ventricular administration of angiotensin II (ANG II) produces potent dipsogenic effects in water-sated rats. ANG II seems to require functional voltage-gated calcium channels on neurons throughout circumventricular brain sites to exert its…

Nerves containing the calcium-binding protein calretinin have been reported in several organs but not in female reproductive organs and associated ganglia. This study was undertaken to determine if nerves associated with the uterus contain calretinin…

In the present study, [3H]nisoxetine binding to norepinephrine (NE) uptake sites and [3H]norepinephrine uptake were investigated within olfactory bulb (OB) and frontal cortex homogenates from intact and castrated male rats. Statistically significant…

It has been demonstrated that castration alters the functioning of the olfactory bulb (OB)-norepinephrine (NE) system. In the present experiment, we examined one of the mechanisms by which castration modulates the OB-NE system by comparing NE uptake…

Acetylcholine (ACh) stimulates contraction of the uterus and dilates the uterine arterial supply. Uterine cholinergic nerves arise from the paracervical ganglia and were, in the past, characterized based on acetylcholinesterase (AChE) histochemistry.…

The ability of cocaethylene to produce either a conditioned place preference or a conditioned place aversion was tested in rats. Twelve male rats were administered 10 mg/kg cocaethylene and confined to their nonpreferred side of the conditioned place…

Experimentally naive Sprague-Dawley male rats were trained to discriminate the interoceptive stimulus cues produced by either 10.0 mg/kg cocaine or 10.0 mg/kg cocaethylene from their saline vehicles. Although it required more sessions to train the…

The discriminative stimulus properties of cocaine are thought to be mediated by dopaminergic mechanisms that may be modulated by calcium ion influx and/or interact with 5-hydroxytryptamine3 (5-HT3) receptors. To test these possibilities, rats were…

Ibogaine is an alkaloid employed for its hallucinatory properties in West Central Africa which has been the subject of alleged efficacy as an aid in the interruption and treatment of chemical dependency. The major sources of the Schedule I agent are:…

CGS 10746B, a dopamine release inhibitor with properties similar to the atypical antipsychotic clozapine, was assessed as to its behavioral properties using spontaneous locomotor activity and the conditioned place preference test. Rats conditioned…

Previous work has indicated that the psychostimulant cathinone produces a location preference in the conditioned place preference task. The present study expanded upon this earlier work by examining the dose-response nature of cathinone-induced…

The Fawn Hooded (FH) rat strain possesses a genetic platelet storage pool deficiency which leads to an impaired capacity for platelets to store and release serotonin. While the relationship between this deficit and possible alterations in brain…

The influence of daily spontaneous running (DSR) and gender on the arterial baroreflex regulation of heart rate (HR) and lumbar sympathetic nerve activity (LSNA) was examined in 13 male [7 sedentary (SED) and 6 DSR] and 12 female (6 SED and 6 DSR)…

The effect of daily spontaneous running on blood pressure homeostasis (BPH) was evaluated in 19 male and 13 female control rats and 7 male and 13 female daily spontaneous running rats subjected to surgery and subsequent repetitive hemodynamic…

This study was designed to compare the estimated energy balance, linear growth (body and bone lengths) and body composition (all components including body mass, total body water, fat, protein and ash) response to daily spontaneous running (DSR) in…

Behavioral and neurochemical indexes of nigrostriatal dopaminergic function were compared between sedentary control rats (n = 12) and daily spontaneous running (DSR) male rats (n = 10). Nine weeks of DSR did not significantly alter body, heart,…
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