Opioid system is necessary but not sufficient for antidepressive actions of ketamine in rodents
| Autor: | Salma Sheriff, Joshua Chandra, Matthew E. Klein, Roberto Malinow |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Male
ketamine medicine.drug_class Narcotic Antagonists Opioid Receptors N-Methyl-D-Aspartate Rats Sprague-Dawley Substance Misuse opioid system Brain Nucleus Receptors Behavioral and Social Science medicine Animals Humans Ketamine Letters Permissive Multidisciplinary Animal business.industry Depression Neurosciences Biological Sciences Receptor antagonist Antidepressive Agents Brain Disorders Rats Disease Models Animal Mental Health Disease Models Receptors Opioid Antidepressant NMDA receptor Sprague-Dawley Opiate Drug Abuse (NIDA only) business Neuroscience N-Methyl-D-Aspartate lateral habenula medicine.drug |
| Zdroj: | Proc Natl Acad Sci U S A Proceedings of the National Academy of Sciences of the United States of America, vol 117, iss 5 |
| ISSN: | 1091-6490 |
| Popis: | Slow response to the standard treatment for depression increases suffering and risk of suicide. Ketamine, an N-methyl-d-aspartate (NMDA) receptor antagonist, can rapidly alleviate depressive symptoms and reduce suicidality, possibly by decreasing hyperactivity in the lateral habenula (LHb) brain nucleus. Here we find that in a rat model of human depression, opioid antagonists abolish the ability of ketamine to reduce the depression-like behavioral and LHb hyperactive cellular phenotypes. However, activation of opiate receptors alone is not sufficient to produce ketamine-like effects, nor does ketamine mimic the hedonic effects of an opiate, indicating that the opioid system does not mediate the actions of ketamine but rather is permissive. Thus, ketamine does not act as an opiate but its effects require both NMDA and opiate receptor signaling, suggesting that interactions between these two neurotransmitter systems are necessary to achieve an antidepressant effect. |
| Databáze: | OpenAIRE |
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