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Ready for a "breakthrough" with ketamine? A look at recent pharmacological insights! | LitMetric

Ready for a "breakthrough" with ketamine? A look at recent pharmacological insights!

Curr Opin Anaesthesiol

Klinik für Anästhesiologie und Intensivmedizin, Technische Universität München, Klinikum rechts der Isar, Munich, Germany.

Published: August 2021

AI Article Synopsis

Article Abstract

Purpose Of Review: To update pharmacological insights on ketamine integrating information from different disciplines for developing steps to "breakthrough" approaches in clinical challenges.

Recent Findings: Pharmacokinetic/pharmacodynamic (PK/PD) models have incorporated recirculation, ketamine metabolites, drug-drug interaction, and covariates such as age. Ketamine-induced relief from treatment-resistant depression has been explained by "disinhibition" of gamma-aminobutyric acid-ergic interneurons and synaptogenic mechanisms requiring neurotrophic signals. Neuroimaging/electroencephalographic investigations have shown an increase in gamma spectral power in healthy volunteers and patients with depression, but also opposite changes in functional network connectivity after subanesthetic ketamine. Volunteer data may not be transferable to clinical conditions. Altered states of consciousness induced by subanesthetic ketamine have been described by disruption of resisting-state functional networks and frontoparietal connectivity with preservation of multisensory and sensor-motor networks. This has been interpreted as a "disconnected consciousness".

Summary: More precise PK/PD models may improve the ketamine use regimen. The findings from research on depression are an important discovery because ketamine's impact on neuronal plasticity and synaptogenesis in human brain disease has directly been documented. Psychic adverse effects with subanesthetic ketamine are related to a "disconnected consciousness". Overall, progress has been made, but the "breakthrough" still has to come.

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Source
http://dx.doi.org/10.1097/ACO.0000000000001017DOI Listing

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