Skip to main content

Research Repository

Advanced Search

All Outputs (26)

Dopamine D1-like receptors modulate synchronized oscillations in the hippocampal–prefrontal–amygdala circuit in contextual fear (2023)
Journal Article
Stubbendorff, C., Hale, E., Bast, T., Cassaday, H. J., Martin, S. J., Suwansawang, S., …Stevenson, C. W. (2023). Dopamine D1-like receptors modulate synchronized oscillations in the hippocampal–prefrontal–amygdala circuit in contextual fear. Scientific Reports, 13, Article 17631. https://doi.org/10.1038/s41598-023-44772-6

Contextual fear conditioning (CFC) is mediated by a neural circuit that includes the hippocampus, prefrontal cortex, and amygdala, but the neurophysiological mechanisms underlying the regulation of CFC by neuromodulators remain unclear. Dopamine D1-l... Read More about Dopamine D1-like receptors modulate synchronized oscillations in the hippocampal–prefrontal–amygdala circuit in contextual fear.

Attitudes to the use of animals in biomedical research: Effects of stigma and selected research project summaries (2023)
Journal Article
Cassaday, H. J., Cavenagh, L., Aluthgamage, H., Crooks, A., Bonardi, C., Stevenson, C. W., …Muir, C. (2023). Attitudes to the use of animals in biomedical research: Effects of stigma and selected research project summaries. PLoS ONE, 18(8), Article e0290232. https://doi.org/10.1371/journal.pone.0290232

Three groups of participants (largely recruited from the UK) completed a survey to examine attitudes to the use of animals in biomedical research, after reading the lay (N = 182) or technical (N = 201) summary of a research project, or no summary (N... Read More about Attitudes to the use of animals in biomedical research: Effects of stigma and selected research project summaries.

Pharmacological modulation of Kv3 voltage-gated potassium channels regulates fear discrimination and expression in a response-dependent manner (2023)
Journal Article
Stubbendorff, C., Hale, E., Day, H. L. L., Smith, J., Alvaro, G. S., Large, C. H., & Stevenson, C. W. (2023). Pharmacological modulation of Kv3 voltage-gated potassium channels regulates fear discrimination and expression in a response-dependent manner. Progress in Neuro-Psychopharmacology and Biological Psychiatry, 127, Article 110829. https://doi.org/10.1016/j.pnpbp.2023.110829

Various psychiatric diseases are characterized by aberrant cognition and emotional regulation. This includes inappropriately attributing affective salience to innocuous cues, which can be investigated using translationally relevant preclinical models... Read More about Pharmacological modulation of Kv3 voltage-gated potassium channels regulates fear discrimination and expression in a response-dependent manner.

Endocannabinoid metabolism inhibition has no effect on spontaneous fear recovery or extinction resistance in Lister hooded rats (2022)
Journal Article
Warren, W. G., Papagianni, E. P., Hale, E., Brociek, R. A., Cassaday, H. J., & Stevenson, C. W. (2022). Endocannabinoid metabolism inhibition has no effect on spontaneous fear recovery or extinction resistance in Lister hooded rats. Frontiers in Pharmacology, 13, Article 1082760. https://doi.org/10.3389/fphar.2022.1082760

Endocannabinoid transmission is emerging as a target for treating anxiety-related disorders, given its regulation of fear extinction. Boosting anandamide levels via inhibition of its metabolism by fatty acid amide hydrolase (FAAH) can enhance extinct... Read More about Endocannabinoid metabolism inhibition has no effect on spontaneous fear recovery or extinction resistance in Lister hooded rats.

Camellia sinensis solvent extract, epigallocatechin gallate and caffeine confer trophocidal and cysticidal effects against Acanthamoeba castellanii (2022)
Journal Article
Fakae, L. B., Harun, M. S., Ting, D. S. J., Dua, H. S., Cave, G. W., Zhu, X. Q., …Elsheikha, H. M. (2023). Camellia sinensis solvent extract, epigallocatechin gallate and caffeine confer trophocidal and cysticidal effects against Acanthamoeba castellanii. Acta Tropica, 237, Article 106729. https://doi.org/10.1016/j.actatropica.2022.106729

We examined the anti-acanthamoebic efficacy of green tea Camellia sinensis solvent extract (SE) or its chemical constituents against Acanthamoeba castellanii by using anti-trophozoite, anti-encystation, and anti-excystation assays. C. sinensis SE (62... Read More about Camellia sinensis solvent extract, epigallocatechin gallate and caffeine confer trophocidal and cysticidal effects against Acanthamoeba castellanii.

Cannabidiol Prevents Spontaneous Fear Recovery after Extinction and Ameliorates Stress-Induced Extinction Resistance (2022)
Journal Article
Papagianni, E. P., Warren, W. G., Cassaday, H. J., & Stevenson, C. W. (2022). Cannabidiol Prevents Spontaneous Fear Recovery after Extinction and Ameliorates Stress-Induced Extinction Resistance. International Journal of Molecular Sciences, 23(16), Article 9333. https://doi.org/10.3390/ijms23169333

Cannabidiol, the main non-psychotropic constituent of cannabis, has potential as a treatment for anxiety-related disorders since it reduces learned fear expression and enhances fear extinction. The return of fear over time after successful extinction... Read More about Cannabidiol Prevents Spontaneous Fear Recovery after Extinction and Ameliorates Stress-Induced Extinction Resistance.

URB597 induces subtle changes to aggression in adult Lister Hooded rats (2022)
Journal Article
Warren, W. G., Hale, E., Papagianni, E. P., Cassaday, H. J., Stevenson, C. W., & Stubbendorff, C. (2022). URB597 induces subtle changes to aggression in adult Lister Hooded rats. Frontiers in Psychiatry, 13, Article 885146. https://doi.org/10.3389/fpsyt.2022.885146

The endocannabinoid system has been implicated in both social and cognitive processing. The endocannabinoid metabolism inhibitor, URB597, dose-dependently improves non-social memory in adult Wistar and Sprague Dawley rats, whereas its effect on socia... Read More about URB597 induces subtle changes to aggression in adult Lister Hooded rats.

Strain comparisons in inhibitory discrimination learning and novel object recognition procedures (2021)
Journal Article
Waite, L., Bonardi, C., Stevenson, C. W., & Cassaday, H. J. (2021). Strain comparisons in inhibitory discrimination learning and novel object recognition procedures. Physiology and Behavior, 240, Article 113557. https://doi.org/10.1016/j.physbeh.2021.113557

Strain differences in visual abilities and exploratory tendencies can confound rats’ performance in cognitive tests of learning and memory. In the present study we compared the performance of albino Wistar and pigmented Lister Hooded rats in appetiti... Read More about Strain comparisons in inhibitory discrimination learning and novel object recognition procedures.

In it together? The case for endocannabinoid–noradrenergic interactions in fear extinction (2021)
Journal Article
Warren, W. G., Papagianni, E. P., Stevenson, C. W., & Stubbendorff, C. (2022). In it together? The case for endocannabinoid–noradrenergic interactions in fear extinction. European Journal of Neuroscience, 55(4), 952-970. https://doi.org/10.1111/ejn.15200

Anxiety and trauma-related disorders, such as post-traumatic stress disorder (PTSD), are debilitating mental illnesses with great personal and socioeconomic costs. Examining memory formation and relevant behavioural responding associated with aversiv... Read More about In it together? The case for endocannabinoid–noradrenergic interactions in fear extinction.

Could cannabidiol be a treatment for coronavirus disease-19-related anxiety disorders? (2020)
Journal Article
O'Sullivan, S. E., Stevenson, C. W., & Laviolette, S. R. (2021). Could cannabidiol be a treatment for coronavirus disease-19-related anxiety disorders?. Cannabis and Cannabinoid Research, 6(1), 7-18. https://doi.org/10.1089/can.2020.0102

© Copyright 2021, Mary Ann Liebert, Inc., publishers 2021. Coronavirus disease-19 (COVID-19)-related anxiety and post-traumatic stress symptoms (PTSS) or post-traumatic stress disorder (PTSD) are likely to be a significant long-term issue emerging fr... Read More about Could cannabidiol be a treatment for coronavirus disease-19-related anxiety disorders?.

Structural, functional, and metabolic alterations in human cerebrovascular endothelial cells during toxoplasma gondii infection and amelioration by verapamil in vitro (2020)
Journal Article
Al-Sandaqchi, A. T., Marsh, V., Williams, H. E. L., Stevenson, C. W., & Elsheikha, H. M. (2020). Structural, functional, and metabolic alterations in human cerebrovascular endothelial cells during toxoplasma gondii infection and amelioration by verapamil in vitro. Microorganisms, 8(9), Article 1386. https://doi.org/10.3390/microorganisms8091386

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Toxoplasma gondii (T. gondii), the causative agent of toxoplasmosis, is a frequent cause of brain infection. Despite its known ability to invade the brain, there is still a dire need to better... Read More about Structural, functional, and metabolic alterations in human cerebrovascular endothelial cells during toxoplasma gondii infection and amelioration by verapamil in vitro.

In vitro activity of Camellia sinensis (green tea) against trophozoites and cysts of Acanthamoeba castellanii (2020)
Journal Article
Fakae, L. B., Stevenson, C. W., Zhu, X. Q., & Elsheikha, H. M. (2020). In vitro activity of Camellia sinensis (green tea) against trophozoites and cysts of Acanthamoeba castellanii. International Journal for Parasitology: Drugs and Drug Resistance, 13, 59-72. https://doi.org/10.1016/j.ijpddr.2020.05.001

© 2020 The Author(s) The effect of Camellia sinensis (green tea) on the growth of Acanthamoeba castellanii trophozoites was examined using a microplate based-Sulforhodamine B (SRB) assay. C. sinensis hot and cold brews at 75% and 100% concentrations... Read More about In vitro activity of Camellia sinensis (green tea) against trophozoites and cysts of Acanthamoeba castellanii.

Dopamine regulation of contextual fear and associated neural circuit function (2020)
Journal Article
Stevenson, C. W., & Stubbendorff, C. (2021). Dopamine regulation of contextual fear and associated neural circuit function. European Journal of Neuroscience, 54(8), 6933-6947. https://doi.org/10.1111/ejn.14772

© 2020 The Authors. European Journal of Neuroscience published by Federation of European Neuroscience Societies and John Wiley & Sons Ltd Learning to associate certain contexts with threat and adapting to changing environmental contingencies by lea... Read More about Dopamine regulation of contextual fear and associated neural circuit function.

The neurobiological basis of sex differences in learned fear and its inhibition (2019)
Journal Article
Day, H. L., & Stevenson, C. W. (2020). The neurobiological basis of sex differences in learned fear and its inhibition. European Journal of Neuroscience, 52(1), 2466-2486. https://doi.org/10.1111/ejn.14602

Learning that certain cues or environments predict threat enhances survival by promoting appropriate fear and the resulting defensive responses. Adapting to changing stimulus contingencies by learning that such cues no longer predict threat, or disti... Read More about The neurobiological basis of sex differences in learned fear and its inhibition.

Cannabinoid regulation of fear and anxiety: an update (2019)
Journal Article
Papagianni, E. P., & Stevenson, C. W. (2019). Cannabinoid regulation of fear and anxiety: an update. Current Psychiatry Reports, 21(6), 1-10. https://doi.org/10.1007/s11920-019-1026-z

Purpose of Review Anxiety- and trauma-related disorders are prevalent and debilitating mental illnesses associated with a significant socioeconomic burden. Current treatment approaches often have inadequate therapeutic responses, leading to symptom... Read More about Cannabinoid regulation of fear and anxiety: an update.

Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning (2019)
Journal Article
Stubbendorff, C., Hale, E., Cassaday, H. J., Bast, T., & Stevenson, C. W. (2019). Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning. Psychopharmacology, 236(6), 1771-1782. https://doi.org/10.1007/s00213-018-5162-7

Rationale Dopamine D1 receptor (D1R) signalling is involved in contextual fear conditioning. The D1R antagonist SCH23390 impairs the acquisition of contextual fear when administered systemically or infused locally into the dorsal hippocampus or ba... Read More about Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning.

Adaptive spectral tracking for coherence estimation: the z-tracker (2018)
Journal Article
Halliday, D. M., Brittain, J., Stevenson, C. W., & Mason, R. (2018). Adaptive spectral tracking for coherence estimation: the z-tracker. Journal of Neural Engineering, 15(2), https://doi.org/10.1088/1741-2552/aaa3b4

Objective: A major challenge in non-stationary signal analysis is reliable estimation of correlation. Neurophysiological recordings can be many minutes in duration with data that exhibits correlation which changes over different time scales. Local sm... Read More about Adaptive spectral tracking for coherence estimation: the z-tracker.

Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders (2017)
Journal Article
Lee, J. L., Bertoglio, L. J., Guimaraes, F. S., & Stevenson, C. W. (in press). Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders. British Journal of Pharmacology, https://doi.org/10.1111/bph.13724

Learning to associate cues or contexts with potential threats or rewards is adaptive and enhances survival. Both aversive and appetitive memories are therefore powerful drivers of behaviour, but the inappropriate expression of conditioned responding... Read More about Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders.

Bidirectional effects of cannabidiol on contextual fear memory extinction (2016)
Journal Article
Song, C., Stevenson, C. W., Guimaraes, F. S., & Lee, J. L. (2016). Bidirectional effects of cannabidiol on contextual fear memory extinction. Frontiers in Pharmacology, 7(493), https://doi.org/10.3389/fphar.2016.00493

Cannabidiol (CBD) has been established to have both acute and long-lasting effects to reduce fear memory expression. The long-lasting impact might be mediated by an enhancement of memory extinction or an impairment of memory reconsolidation. Here, we... Read More about Bidirectional effects of cannabidiol on contextual fear memory extinction.

Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders (2016)
Journal Article
Jurkus, R., Day, H. L., Guimaraes, F. S., Lee, J. L., Bertoglio, L. J., & Stevenson, C. W. (2016). Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders. Frontiers in Pharmacology, 7(454), https://doi.org/10.3389/fphar.2016.00454

Anxiety and trauma-related disorders are psychiatric diseases with a lifetime prevalence of up to 25%. Phobias and post-traumatic stress disorder (PTSD) are characterized by abnormal and persistent memories of fear-related contexts and cues. The effe... Read More about Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders.