Pharmacology & Therapeutics (Scholarly Articles)
Browse by
Recent Submissions
-
Hyporesponsivity to mu-opioid receptor agonism in the Wistar-Kyoto rat model of altered nociceptive responding associated with negative affective state.
(Lippincott, Williams & Wilkins, 2020-08-17)Chronic pain is often comorbid with anxiety and depression, altering the level of perceived pain, which negatively affects therapeutic outcomes. The role of the endogenous mu-opioid receptor (MOP) system in pain-negative ... -
Pharmacological blockade of PPAR isoforms increases conditioned fear responding in the presence of nociceptive tone
(MDPI, 2020-02-24)Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors with three isoforms (PPAR¿, PPARß/¿, PPAR¿) and can regulate pain, anxiety, and cognition. However, their role in conditioned fear and pain-fear ... -
PPARs and pain
(Wiley, 2018-04-21)Chronic pain is a common cause of disability worldwide and remains a global health and socio-economic challenge. Current analgesics are either ineffective in a significant proportion of patients with chronic pain or ... -
Differential role of anterior cingulate cortical glutamatergic neurons in pain-related aversion learning and nociceptive behaviors in male and female rats
(Frontiers Media, 2020-08-11)Pain is comprised of both sensory and affective components. The anterior cingulate cortex (ACC) is a key brain region involved in the emotional processing of pain. Specifically, glutamatergic transmission within the ACC ... -
Antinociceptive effects of the GPR55 Antagonist CID16020046 injected into the rat anterior cingulate cortex
(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, ... -
Attenuation of fear‐conditioned analgesia in rats by monoacylglycerol lipase inhibition in the anterior cingulate cortex: Potential role for CB2 receptors
(The British Pharmacological Society, 2020-01-22)Improved understanding of brain mechanisms regulating endogenous analgesia is important from a fundamental physiological perspective and for identification of novel therapeutic strategies for pain. The endocannabinoid ... -
Effects of direct periaqueductal grey administration of a cannabinoid receptor agonist on nociceptive and aversive responses in rats
(Elsevier, 2003-07-31)The analgesic potential of cannabinoids may be hampered by their ability to produce aversive emotion when administered systemically. We investigated the hypothesis that the midbrain periaqueductal grey (PAG) is a common ... -
Endocannabinoid-mediated enhancement of fear-conditioned analgesia in rats: Opioid receptor dependency and molecular correlates
(International Association for the Study of Pain, 2008-12)The opioid and endocannabinoid systems mediate analgesia expressed upon re-exposure to a contextually aversive stimulus (fear-conditioned analgesia; FCA), and modulate the mitogen-activated protein kinase (MAPK) pathway. ... -
Impaired endocannabinoid signalling in the rostral ventromedial medulla underpins genotype-dependent hyper-responsivity to noxious stimuli
(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 ... -
Evidence for differential modulation of conditioned aversion and fear‐conditioned analgesia by CB1 receptors
(Wiley, 2004-07-15)Fear‐conditioned analgesia is an important survival response mediated by substrates controlling nociception and aversion. Cannabinoid1 (CB1) receptors play an important role in nociception and aversion. However, their role ... -
Development and characterization of a novel, anatomically relevant rat model of acute postoperative pain
(Elsevier, 2015-01-30)Acute postoperative pain remains a significant health care issue. Development of anatomically relevant animal models of postoperative pain, with improved predictive validity, would advance understanding of postoperative ... -
Evidence for a role of GABAergic and glutamatergic signalling in the basolateral amygdala in endocannabinoid-mediated fear-conditioned analgesia in rats
(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 ... -
The prefrontal cortical endocannabinoid system modulates fear–pain interactions in a subregion‐specific manner
(Wiley, 2018-05-30)Background and Purpose The emotional processing and coordination of top‐down responses to noxious and conditioned aversive stimuli involves the medial prefrontal cortex (mPFC). Evidence suggests that subregions of the ... -
Locomotor and anti-immobility effects of buprenorphine in combination with the opioid receptor modulator samidorphan in rats
(Elsevier, 2018-12-13)Modulation of the opioid system has re-emerged as a potential therapeutic avenue for treating depression, with efficacy of a fixed-dose combination of buprenorphine (BUP), a partial mu-opioid receptor (MOR) agonist and ... -
Supraspinal Transient Receptor Potential Subfamily V Member 1 (TRPV1) in pain and psychiatric disorders
(Karger, 2015)The transient receptor potential subfamily V member 1 (TRPV1) belongs to the diverse transient receptor potential (TRP) family of cation channels. It was first characterized in primary afferent fibres as a receptor for ... -
Involvement of the endocannabinoid system in attentional modulation of nociceptive behaviour in rats
(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 ... -
Impaired cued and spatial learning performance and altered cannabinoid CB1 receptor functionality in the substantia nigra in a rat model of diabetic neuropathy
(Elsevier, 2016-01-13)Diabetes, and associated diabetic neuropathic pain, impact negatively on cognitive function. However, the underlying mechanisms remain poorly understood. This study investigated neuropathic pain-related behaviour and ... -
Genotype-dependent responsivity to inflammatory pain: A role for TRPV1 in the periaqueductal grey
(Elsevier, 2016-08-09)Negative affective state has a significant impact on pain, and genetic background is an important moderating influence on this interaction. The Wistar-Kyoto (WKY) inbred rat strain exhibits a stress-hyperresponsive, ... -
Repeated forced swim stress differentially affects formalin-evoked nociceptive behaviour and the endocannabinoid system in stress normo-responsive and stress hyper-responsive rat strains
(Elsevier, 2015-05-16)Repeated exposure to a homotypic stressor such as forced swimming enhances nociceptive responding in rats. However, the influence of genetic background on this stress-induced hyperalgesia is poorly understood. The aim of ... -
N-palmitoylethanolamide in the anterior cingulate cortex attenuates inflammatory pain behaviour indirectly via a CB1 receptor-mediated mechanism
(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 ...