Hippocampal Perineuronal Nets Are Required for the Sustained Antidepressant Effect of Ketamine.

Hippocampal Perineuronal Nets Are Required for the Sustained Antidepressant Effect of Ketamine.
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DOI:
10.1093/ijnp/pyw095
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发表时间:
2017-04-01
期刊:
The international journal of neuropsychopharmacology
影响因子:
--
通讯作者:
Lodge DJ
Lodge DJ
中科院分区:
其他
文献类型:
--
作者:
Donegan JJ;Lodge DJ

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N-methyl-D-aspartate receptor antagonists, like ketamine, produce a rapid-acting and long-lasting antidepressant effect. Although the mechanism is not completely understood, ketamine is thought to preferentially target N-methyl-D-aspartate receptors on fast-spiking parvalbumin-containing interneurons. The function of parvalbumin-containing interneurons is dependent on perineuronal nets, a specialized form of extracellular matrix that surrounds these cells. Chondroitinase was used to enzymatically degrade perineuronal nets surrounding parvalbumin-containing interneurons in the ventral hippocampus, a region that is involved in the antidepressant response to ketamine. Rats were tested on the forced swim test 30 minutes and 1 week after ketamine administration. Thirty minutes after ketamine injection, both chondroitinase-treated and control animals had a decrease in immobility. One week later, however, the antidepressant-like response observed with ketamine was completely abolished in the chondroitinase-treated animals. This suggests that parvalbumin interneuron function in the ventral hippocampus is essential for the sustained antidepressant effect of ketamine.
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