Now showing items 11-20 of 22
In Vitro release of hypothalamic [beta]-endorphin [beta]E by arginine vasopressin, corticotropin-releasing hormone and 5-hydroxytryptamine: Evidence for release of opioid active and inactive [beta]E forms
(Elsevier, 1990-05)
The aims of the present experiments were: 1) to test whether substances which modulate beta-endorphin-immunoreactive [beta]E-ir release from the pituitary gland might act similarly in hypothalamic tissue; and 2) to further ...
Anatomical and biochemical studies of the opioid peptides and related substances in the brain
(Elsevier, 1980)
It is now clear that there are at least four opioid peptide-neuronal systems in mammalian brain: the enkephalins, beta-endorphin and dynorphin. The focus of this presentation will be twofold--to focus on the multiple ...
Changes in releasability of ACTH and Beta-endorphin with chronic stress
(Elsevier, 1985-02)
The activation of the hypothalamic pituitary adrenal axis by stress is well-known. Using inescapable intermittent footshock as a stressor in rats, we have previously demonstrated a rise in circulating plasma Beta-endorph ...
Characterization of pro-opiomelanocortin processing in heterologous neuronal cells that express PC2 mRNA
(Elsevier, 1993-05)
We have investigated processing of monkey pro-opiomelanocortin (POMC) following transfection into heterologous neuronal Neuro 2A (N2A) cells. In several separately transfected stable cell lines (termed N2A/POMC2-like; N = ...
Social defeat alters the acquisition of cocaine self-administration in rats: role of individual differences in cocaine-taking behavior
(Springer-Verlag, 2001-12)
Rationale : It is known that social defeat can modulate cocaine self-administration. However, it is unclear whether this psychosocial stressor affects drug-taking behavior to the same extent across all individual animals, ...
The degradation of dynorphin A in brain tissue in vivo and in vitro
(Elsevier, 1987)
The demonstration of analgesia following in vivo administration of dynorphin A (Dyn A) has been difficult. In contrast, a number of electrophysiological and behavioral effects reported with in vivo injection of Dyn A can ...
Further characterization of the extra-arcuate alpha-melanocyte stimulating hormone-like material in hypothalamus: Biochemical and anatomical studies
(Elsevier, 1986-04)
Previous studies had shown the existence of an extra-arcuate cell group in lateral hypothalamus which contains alpha-melanocyte stimulating hormone (a-MSH)-like immunoreactivity, but no other pro-opiomelanocortin (POMC) ...
Acute systemic administration of morphine selectively increases mu opioid receptor binding in the rat brain
(Elsevier, 1984-12)
Opioid receptor binding, including the mu, delta, and kappa receptor subtypes, was compared in morphine-injected and control rats. Brain tissues were homogenized and centrifuged either one or two times prior to receptor ...
Effects of contextual or olfactory cues previously paired with morphine withdrawal on behavior and pain sensitivity in the rat
(Springer-Verlag, 2001-08)
Rationale: Pavlovian conditioning processes have been accorded an important role in maintaining persistent opiate administration. At least one locus for this contribution is during opiate withdrawal. These experiments ...
Dynorphin immunocytochemistry in the rat central nervous system
(Elsevier, 1982)
The distribution of dynorphin in the central nervous system was investigated in rats pretreated with relatively high doses (300-400 [mu]g) of colchicine administered intracerebroventricularly. To circumvent the problems ...