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Torsten Falk

5 papers in the library · 17 citations · publishing 2016-2026

Papers

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Neuroprotective activity of sub-anesthetic ketamine in a preclinical model of Parkinson's disease is not blocked by antagonizing brain-derived neurotrophic factor signaling

bioRxiv October 29, 2026 Carolyn J Stopera, Mitchell J Bartlett, Kelsey Bernard et al. preprint

Treatment with low-dose ketamine is neuroprotective in rodent models of acute damage, while high doses of ketamine can be neurotoxic. Our group has previously shown that sub-anesthetic ketamine treatment leads to long-term reduction of L-DOPA-induced dyskinesia (LID) via brain-derived neurotrophic factor (BDNF)-signaling in a rat 6-hydroxydopamine (6-OHDA) model of Parkinson's disease (PD). In...

Decoupling of motor cortex to movement in Parkinson's dyskinesia rescued by sub-anaesthetic ketamine.

Brain June 3, 2025 Abhilasha Vishwanath, Mitchell J Bartlett, Torsten Falk et al. 8 citations

Gamma-band and single-unit neural activity in primary motor cortex are involved in the control of movement. This activity is disrupted in Parkinson's disease (PD) and levodopa-induced dyskinesia (LID), a debilitating consequence of dopamine replacement therapy for PD. Physiological features of LID include pathological narrowband gamma oscillations, finely tuned gamma and altered primary motor...

DOI: 10.1093/brain/awae386 (opens in new tab) Full text (opens in new tab) In vivo electrophysiology 6-hydroxydopamine hemi-lesioned model Cell types Inertial speed +4

Differential effects of opioid receptor antagonism on the anti-dyskinetic and anti-parkinsonian effects of sub-anesthetic ketamine treatment in a preclinical model.

Neuropharmacology October 1, 2024 Carolyn J Stopera, Mitchell J Bartlett, Chenxi Liu et al. 9 citations

Sub-anesthetic ketamine treatment has been shown to be an effective therapy for treatment-resistant depression and chronic pain. Our group has previously shown that sub-anesthetic ketamine produces acute anti-parkinsonian, and acute anti-dyskinetic effects in preclinical models of Parkinson's disease (PD). Ketamine is a multifunctional drug and exerts effects through blockade of...

DOI: 10.1016/j.neuropharm.2024.110047 (opens in new tab) Full text (opens in new tab) 6-hydroxydopamine Levodopa-induced dyskinesia Microdialysis Naloxone +6

Ten-Hour Exposure to Low-Dose Ketamine Enhances Corticostriatal Cross-Frequency Coupling and Hippocampal Broad-Band Gamma Oscillations.

Frontiers in Neural Circuits 2018 Tony Ye, Mitchell J Bartlett, Matthew B Schmit et al.

Introduction: Treatment-resistant depression, post-traumatic stress disorder, chronic pain, and L-DOPA-induced dyskinesia in Parkinson's disease are characterized by hypersynchronous neural oscillations. Sub-anesthetic ketamine is effective at treating these conditions, and this may relate to ketamine's capacity to reorganize oscillatory activity throughout the brain. For example, a single...

DOI: 10.3389/fncir.2018.00061 (opens in new tab) Full text (opens in new tab) Depression Parkinson’s disease Cross-frequency coupling Gamma +3

Case Reports Showing a Long-Term Effect of Subanesthetic Ketamine Infusion in Reducing l-DOPA-Induced Dyskinesias.

Case Reports in Neurology 2016 Scott J Sherman, Miguel Estevez, Ari B Magill et al.

Ketamine is an FDA-approved drug with a known safety profile. Low-dose subanesthetic intravenous ketamine infusion treatment has led to long-term reduction of treatment-resistant depression and of chronic pain states. We report on low-dose subanesthetic intravenous ketamine infusion treatment in Parkinson's disease (PD) patients by 5 case studies and show a long-lasting therapeutic benefit to...