PMID- 26106296 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150624 LR - 20200930 IS - 1662-5102 (Print) IS - 1662-5102 (Electronic) IS - 1662-5102 (Linking) VI - 9 DP - 2015 TI - Facial stimulation induces long-term depression at cerebellar molecular layer interneuron-Purkinje cell synapses in vivo in mice. PG - 214 LID - 10.3389/fncel.2015.00214 [doi] LID - 214 AB - Cerebellar long-term synaptic plasticity has been proposed to provide a cellular mechanism for motor learning. Numerous studies have demonstrated the induction and mechanisms of synaptic plasticity at parallel fiber-Purkinje cell (PF-PC), parallel fiber-molecular layer interneurons (PF-MLI) and mossy fiber-granule cell (MF-GC) synapses, but no study has investigated sensory stimulation-evoked synaptic plasticity at MLI-PC synapses in the cerebellar cortex of living animals. We studied the expression and mechanism of MLI-PC GABAergic synaptic plasticity induced by a train of facial stimulation in urethane-anesthetized mice by cell-attached recordings and pharmacological methods. We found that 1 Hz, but not a 2 Hz or 4 Hz, facial stimulation induced a long-term depression (LTD) of GABAergic transmission at MLI-PC synapses, which was accompanied with a decrease in the stimulation-evoked pause of spike firing in PCs, but did not induce a significant change in the properties of the sensory-evoked spike events of MLIs. The MLI-PC GABAergic LTD could be prevented by blocking cannabinoid type 1 (CB1) receptors, and could be pharmacologically induced by a CB1 receptor agonist. Additionally, 1 Hz facial stimulation delivered in the presence of a metabotropic glutamate receptor 1 (mGluR1) antagonist, JNJ16259685, still induced the MLI-PC GABAergic LTD, whereas blocking N-methyl-D-aspartate (NMDA) receptors during 1 Hz facial stimulation abolished the expression of MLI-PC GABAergic LTD. These results indicate that sensory stimulation can induce an endocannabinoid (eCB)-dependent LTD of GABAergic transmission at MLI-PC synapses via activation of NMDA receptors in cerebellar cortical Crus II in vivo in mice. Our results suggest that the sensory stimulation-evoked MLI-PC GABAergic synaptic plasticity may play a critical role in motor learning in animals. FAU - Bing, Yan-Hua AU - Bing YH AD - Cellular Function Research Center, Yanbian University Yanji, Jilin Province, China ; Department of Physiology and Pathophysiology, College of Medicine, Yanbian University Yanji, Jilin Province, China. FAU - Wu, Mao-Cheng AU - Wu MC AD - Cellular Function Research Center, Yanbian University Yanji, Jilin Province, China ; Department of Osteology, Affiliated Hospital of Yanbian University Yanji, Jilin Province, China. FAU - Chu, Chun-Ping AU - Chu CP AD - Cellular Function Research Center, Yanbian University Yanji, Jilin Province, China. FAU - Qiu, De-Lai AU - Qiu DL AD - Cellular Function Research Center, Yanbian University Yanji, Jilin Province, China ; Department of Physiology and Pathophysiology, College of Medicine, Yanbian University Yanji, Jilin Province, China. LA - eng PT - Journal Article DEP - 20150609 PL - Switzerland TA - Front Cell Neurosci JT - Frontiers in cellular neuroscience JID - 101477935 PMC - PMC4460530 OTO - NOTNLM OT - NMDA receptor OT - cerebellar Purkinje cell OT - endocannabinoids receptor OT - in vivo cell-attached recording OT - molecular layer interneuron OT - plasticity OT - sensory stimulation EDAT- 2015/06/25 06:00 MHDA- 2015/06/25 06:01 PMCR- 2015/01/01 CRDT- 2015/06/25 06:00 PHST- 2015/04/01 00:00 [received] PHST- 2015/05/20 00:00 [accepted] PHST- 2015/06/25 06:00 [entrez] PHST- 2015/06/25 06:00 [pubmed] PHST- 2015/06/25 06:01 [medline] PHST- 2015/01/01 00:00 [pmc-release] AID - 10.3389/fncel.2015.00214 [doi] PST - epublish SO - Front Cell Neurosci. 2015 Jun 9;9:214. doi: 10.3389/fncel.2015.00214. eCollection 2015.