Now showing items 31-40 of 47
Pulsatile LH secretion in women with premenstrual syndrome (PMS): Evidence for normal neuroregulation of the menstrual cycle
(Elsevier, 1992)
The premenstrual syndrome (PMS) has been proposed to result from excessive exposure to and/or withdrawal of brain opioid activity during the luteal phase. Because hypothalamic opioids are believed to modulate GnRH secretion, ...
Asymmetric cross-sensitization to the locomotor stimulant effects of phencyclidine and MK-801,
(Elsevier, 1994-08)
Chronic administration of a psychomotor stimulant has been shown to produce progressively enhanced effects, a phenomenon called "reverse tolerance" or sensitization. Sensitization which develops to the psychomotor stimulant ...
Wortmannin Blocks Goldfish Retinal Phosphatidylinositol 3-Kinase and Neurite Outgrowth
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1997-04)
The goldfish retina has been used extensively for the study of nerve regeneration. A role for phosphatidylinositol 3-kinase (PI3K) in neurite outgrowth from goldfish retinal explants has been examined by means of wortmannin ...
Cloning and characterization of a pharmacologically distinct A1 adenosine receptor from guinea pig brain
(Elsevier, 1994-10)
Three full-length cDNA clones encoding the guinea pig A1 adenosine receptor have been isolated by polymerase chain reaction (PCR) and low-stringency hybridization screening of a guinea pig brain cDNA library. These three ...
Characterization of [beta]-endorphin-related peptides in the caudal medulla oblongata and hypothalamus of the prenatal, postnatal and adult rat
(Elsevier, 1991-09-19)
A comparison was made of [beta]-endorphin (B-END) concentrations versus post-translation products during the perinatal period in the hypothalamus and the caudal medulla oblongata. The concentration of B-END-like immunoreactivity ...
The Role of the Hippocampal Mineralocorticoid and Glucocorticoid Receptors in the Hypothalamo-Pituitary-Adrenal Axis of the Aged Fisher Rat
(Elsevier, 1994-10)
The aging process has been frequently associated with hippocampal neuredegeneration, loss of corticosteroid receptors, and, at the same time, dysfunction of the hypothalamo-pituitary-adrenal (HPA) axis. We were interested ...
Cyclic AMP accumulation alters calmodulin localization in SK-N-SH human neuroblastoma cells
(Elsevier, 1992-01)
In SK-N-SH human neuroblastoma cells, the muscarinic agonist carbachol promotes polyphosphoinositide (PPI) hydrolysis via M3 receptors and increases cyclic AMP levels through an unidentified mechanism. Activation of PPI ...
Diurnal Regulation of Glucocorticoid Receptor and Mineralocorticoid Receptor mRNAs in Rat Hippocampus
(Elsevier, 1993-04)
The present studies were undertaken to determine whether hippocampal glucocorticoid receptor (GR) and mineralocorticoid receptor (MR) biosynthesis, as inferred from mRNA expression, exhibit diurnal patterns of activation ...
Phosphorylation of neuromodulin in rat striatum after acute and repeated, intermittent amphetamine
(Elsevier, 1993-12)
Repeated, intermittent treatment of rats with amphetamine results in a sensitization of locomotor and stereotyped behaviors that is accompanied by an enhancement in stimulus-induced dopamine release. Increased phosphorylation ...
Lipid-Dependent Modulation of Ca 2+ Availability in Isolated Mossy Fiber Nerve Endings
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1997-10)
An enhancement of glutamate release from hippocampal neurons has been implicated in long-term potentiation, which is thought to be a cellular correlate of learning and memory. This phenomenom appears to be involved the ...