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Susannah E Murphy

5 papers in the library · 3 citations · publishing 2018-2026

Papers

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Ketamine attenuates habenula activity in response to aversive outcomes during Pavlovian learning

bioRxiv (Cold Spring Harbor Laboratory) February 10, 2026 Erdem Pulcu, Sara Costi, Pilar Artiach-Hortelano et al. preprint

Abstract Ketamine is an NMDA receptor antagonist with rapid-antidepressant properties when administered at a sub-anesthetic dose. Preclinical models indicate that a direct injection of ketamine into lateral habenula (Hb), a small midbrain structure with an evolutionarily preserved role in aversive learning across mammals, can rapidly relieve depression-like behavior. However, there is limited...

Nitrous oxide for the treatment of depression: a systematic review and meta-analysis.

EBioMedicine December 1, 2025 Kiranpreet Gill, Angharad N De Cates, Chantelle Wiseman et al.

Depression remains a global public health challenge, prompting interest in translational targets which allow for more effective and rapidly acting interventions. Nitrous oxide (N2O), an N-methyl-d-aspartate receptor antagonist, has demonstrated potential as a rapid-acting antidepressant. This study synthesised existing data on the efficacy and safety of N2O in depressive disorders. We...

The cognitive neuroscience of ketamine in major depression.

Brain June 30, 2025 Sara Costi, Chloe Wigg, Erdem Pulcu et al. 3 citations

Ketamine's potential as a rapid-acting antidepressant was first identified in 2000, despite its long-standing use as an anesthetic agent. Clinically, ketamine alleviates depressive symptoms, including the difficult to treat symptom of anhedonia, within hours, with the effects of a single dose lasting for days. Since then, research has focused on uncovering the mechanisms underlying its rapid...

DOI: 10.1093/brain/awaf242 (opens in new tab) Full text (opens in new tab) Fast-acting antidepressant Ketamine treatment Ketamine therapy Ketamine medication +15

Examining memory reconsolidation as a mechanism of nitrous oxide's antidepressant action.

Neuropsychopharmacology March 1, 2025 Ella Williams, Ursule Taujanskaite, Sunjeev K. Kamboj et al.

There is an ongoing need to identify novel pharmacological agents for the effective treatment of depression. One emerging candidate, which has demonstrated rapid-acting antidepressant effects in treatment-resistant groups, is nitrous oxide (N2O)-a gas commonly used for sedation and pain management in clinical settings and with a range of pharmacological effects, including antagonism of NMDA...

Mindfulness for pregnancy: A randomised controlled study of online mindfulness during pregnancy.

Midwifery October 2018 Adele Krusche, Maret Dymond, Susannah E Murphy et al.

Prenatal depression, stress and anxiety are significant predictors of postnatal depression and also have a direct negative impact on the family. Helpful psychological interventions during pregnancy are scarce and expensive, and usually only available for a small percentage of those suffering or deemed to be at risk. The aim of this study was to evaluate the potential of an online mindfulness...