Browsing Pharmacology & Therapeutics by Author "Harhen, Brendan"
Now showing items 1-10 of 10
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Antinociceptive effects of the GPR55 Antagonist CID16020046 injected into the rat anterior cingulate cortex
Okine, Bright N.; Mc Laughlin, Gemma; Gaspar, Jessica C.; Harhen, Brendan; Roche, Michelle; Finn, David P. (Elsevier, 2020-07-13)The G-protein coupled receptor, GPR55, modulates nociceptive processing. Given the expression of GPR55 in the anterior cingulate cortex (ACC), a key brain region involved in the cognitive and affective dimensions of pain, ... -
Characterisation of peroxisome proliferator-activated receptor signalling in the midbrain periaqueductal grey of rats genetically prone to heightened stress, negative affect and hyperalgesia
Okine, Bright N.; Gaspar, Jessica C.; Madasu, Manish K.; Olango, Weredeselam M.; Harhen, Brendan; Roche, Michelle; Finn, David P. (Elsevier, 2016-12-01)The stress-hyperresponsive Wistar-Kyoto (WRY) rat strain exhibits a hyperalgesic phenotype and is a useful genetic model for studying stress-pain interactions. Peroxisome proliferator-activated receptor (PPAR) signalling ... -
The endocannabinoid system in the rat dorsolateral periaqueductal grey mediates fear-conditioned analgesia and controls fear expression in the presence of nocicpetive tone
Olango, W.M.; Roche, Michelle; Ford, Gemma K.; Harhen, Brendan; Finn, David P. (Wiley, 2011)Background and purpose: Endocannabinoids in the midbrain periaqueductal grey (PAG) are involved in modulating nociception and unconditioned stress-induced analgesia, however, their role in fear-conditioned analgesia (FCA) ... -
Evidence for a role of GABAergic and glutamatergic signalling in the basolateral amygdala in endocannabinoid-mediated fear-conditioned analgesia in rats
Rea, Kieran; Olango, Weredeselam M.; Harhen, Brendan; Kerr, Daniel M.; Galligan, Rachel; Fitzgerald, Sean; Moore, Maeve; Roche, Michelle; Finn, David P. (Elsevier, 2012-12-31)The basolateral amygdala (BLA) is a key substrate facilitating the expression of fear-conditioned analgesia (FCA). However, the neurochemical mechanisms in the BLA which mediate this potent suppression of pain responding ... -
Impaired endocannabinoid signalling in the rostral ventromedial medulla underpins genotype-dependent hyper-responsivity to noxious stimuli
Rea, Kieran; Olango, Weredeselam M.; Okine, Bright N.; Madasu, Manish K.; McGuire, Iseult C.; Coyle, Kathleen; Harhen, Brendan; Roche, Michelle; Finn, David P. (International Association for the Study of Pain, 2014-01)Pain is both a sensory and an emotional experience, and is subject to modulation by a number of factors including genetic background modulating stress/affect. The Wistar-Kyoto (WKY) rat exhibits a stress-hyper-responsive ... -
Involvement of the endocannabinoid system in attentional modulation of nociceptive behaviour in rats
Ford, Gemma K.; Moriarty, Orla; Okine, Bright N.; Tully, E.; Mulcahy, A.; Harhen, Brendan; Finn, David P. (Wiley, 2014-11-15)BackgroundDistraction is used clinically to relieve and manage pain. It is hypothesized that pain demands attention and that exposure to another attention-demanding stimulus causes withdrawal of attention away from painful ... -
N-palmitoylethanolamide in the anterior cingulate cortex attenuates inflammatory pain behaviour indirectly via a CB1 receptor-mediated mechanism
Okine, Bright N.; Madasu, Manish K.; McGowan, Fiona; Prendergast, Charles; Gaspar, Jessica C.; Harhen, Brendan; Roche, Michelle; Finn, David P. (Lippincott, Williams & Wilkins, 2016-12)The neural substrates and mechanisms mediating the antinociceptive effects of the endogenous bioactive lipid, N-palmitoylethanolamide (PEA), require further investigation. We investigated the effects of exogenous PEA ... -
Pharmacological inhibition of endocannabinoid degradation modulates the expression of inflammatory mediators in the hypothalamus following an immunological stressor
Kerr, D.M.; Burke, N.N.; Ford, Gemma K.; Harhen, Brendan; Egan, Laurence J.; Finn, David P.; Roche, Michelle (Elsevier, 2011-09)The endocannabinoid system is an important regulator of the nervous, neuroendocrine, and immune systems, thus representing a novel therapeutic target for stress-related neuroinflammatory and psychiatric disorders. However, ... -
Pharmacological inhibition of monoacylglycerol lipase attenuates LPS-induced increases in cytokine expression in the rat frontal cortex and plasma: differential mechanisms of action
Kerr, Danny; Harhen, Brendan; Egan, Jonathan; Finn, David P.; Roche, Michelle (2013)Background and purpose: This study determined the effect of JZL184, a selective inhibitor of monoacylglycerol lipase (MAGL), the enzyme which preferentially catabolises the endocannabinoid 2-arachidonoyl glycerol (2-AG), ... -
A role for the ventral hippocampal endocannabinoid system in fear-conditioned analgesia and fear responding in the presence of nociceptive tone in rats.
Ford, Gemma K.; Kieran, Siobhan; Dolan, Kenneth; Harhen, Brendan; Finn, David P. (Elsevier, 2011-08)The endogenous cannabinoid (endocannabinoid) system plays an important role in fear-conditioned analgesia (FCA) and expression and extinction of conditioned fear. The hippocampus has an established role in both pain and ...