Results 211 to 220 of about 10,432 (275)

Dynorphins in regulation of immune system functions [PDF]

open access: possibleBiochemistry (Moscow), 2014
Dynorphins constitute a family of opioid peptides manifesting the highest affinity for κ-opiate receptors. Immune system cells are known to express a κ-receptor similar to that in the central nervous system, and as a consequence dynorphins are involved in the interaction between cells of the nervous and immune systems. In this review, data on dynorphin
S. Gein
semanticscholar   +3 more sources
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Dynorphins regulate the strength of social memory

Neuropharmacology, 2014
Emotionally arousing events like encounter with an unfamiliar con-species produce strong and vivid memories, whereby the hippocampus and amygdala play a crucial role. It is less understood, however, which neurotransmitter systems regulate the strength of social memories, which have a strong emotional component.
A. Bilkei-Gorzo   +3 more
semanticscholar   +4 more sources

Dysregulation of dynorphins in Alzheimer disease

Neurobiology of Aging, 2007
The opioid peptides dynorphins may be involved in pathogenesis of Alzheimer disease (AD) by inducing neurodegeneration or cognitive impairment. To test this hypothesis, the dynorphin system was analyzed in postmortem samples from AD and control subjects, and subjects with Parkinson or cerebro-vascular diseases for comparison.
T. Yakovleva   +6 more
semanticscholar   +4 more sources

Dynorphins other than dynorphin A(1-17) lack spinal antianalgesic activity but do act on dynorphin A(1-17) receptors.

The Journal of Pharmacology and Experimental Therapeutics, 1991
In recent publications we have proposed that dynorphin (Dyn) A(1-17) functions as an antianalgesic modulator to oppose opioid-induced antinociception in mice. In the present experiments using the tail-flick response in mice, other Dyns [Dyn A(1-8), Dyn A(1-13), Dyn A(2-17), Dyn B and alpha- and beta-neoendorphin] when administered intrathecally (i.t ...
J. Rady, J. Fujimoto, L. Tseng
semanticscholar   +3 more sources

Nonopiate Effects of Dynorphin and Des-Tyr-Dynorphin [PDF]

open access: possibleScience, 1982
Intracerebroventricular administration of dynorphin produced potent and long-lasting effects on motor function and the electroencephalogram in rats. In addition, local iontophoretic or pressure ejection of dynorphin consistently inhibited hippocampal unit activity.
Giulio Baldrighi   +4 more
openaire   +2 more sources

DYNORPHIN AND EPILEPSY

Progress in Neurobiology, 1996
Studies on dynorphin involvement in epilepsy are summarised in this review. Electrophysiological, biochemical and pharmacological data support the hypothesis that dynorphin is implicated in specific types of seizures. There is clear evidence that this is true for complex partial (limbic) seizures, i.e.
Simonato M., Romualdi P.
openaire   +3 more sources

Pharmacology of Dynorphin

Annual Review of Pharmacology and Toxicology, 1988
Like other opioids, the dynorphins play a role in wide variety of physiological parameters, including pain regulation, motor activity, cardiovascular regulation, respiration, temperature regulation, feeding behavior, hormone balance, and the response to shock or stress. The dynorphins are unusual if not unique, however, in that they frequently modulate
Andrew P. Smith, Nancy M. Lee
openaire   +3 more sources

Rimorphin (dynorphin B) exists together with α-neo-endorphin and dynorphin (dynorphin A) in human hypothalamus

Biochemical and Biophysical Research Communications, 1983
Rimorphin (dynorphin B) has been demonstrated to exist together with alpha-neo-endorphin and dynorphin(1-17) (dynorphin A) in the human hypothalamus. The content of rimorphin was comparable to that of alpha-neo-endorphin and somewhat higher than that of dynorphin. This result is quite similar to the recent observations in bovine, porcine and rat neural
Hiroo Imura   +6 more
openaire   +3 more sources

Conversion of Leumorphin (Dynorphin B‐29) to Dynorphin B and Dynorphin B‐14 by Thiol Protease Activity

Journal of Neurochemistry, 1986
AbstractDynorphin B (rimorphin) is formed from leumorphin (dynorphin B‐29) by the action of a thiol protease from rat brain membranes, in a single step. This represents a “single‐arginine cleavage” between threonine‐13 and arginine‐14 of the substrate. We have observed that in addition to dynorphin B, dynorphin B‐14 is formed from dynorphin B‐29. Among
Avram Goldstein, Lakshmi A. Devi
openaire   +3 more sources

Spinal dynorphin involvement in the analgesia of pregnancy: effects of intrathecal dynorphin antisera

European Journal of Pharmacology, 1989
In both rats and humans there is an analgesia associated with pregnancy. This analgesia is spinally mediated and involves the kappa type of opiate receptor. The current study demonstrates that intrathecal administration of high affinity dynorphin antibodies produces a significant reduction in jump thresholds during pregnancy (day 20).
Howard W. Sander   +2 more
openaire   +3 more sources

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