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http://purl.uniprot.org/citations/27861247http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/27861247http://www.w3.org/2000/01/rdf-schema#comment"

Objective

Stimulation of cannabinoid type 1 (CB1) receptor in the rostral ventrolateral medulla (RVLM) increases renal sympathetic nerve activity (RSNA) and blood pressure (BP) in rats. Thus, we hypothesized that abnormal expression of CB1 receptor in the RVLM may play a critical role in the pathogenesis of essential hypertension.

Methods

We evaluated the effects of intra-RVLM infusions of arachidonyl-2'-chloroethylamide (ACEA), selective CB1 receptor agonist, with or without AM251, selective CB1 receptor antagonist, on BP, heart rate (HR), and RSNA in spontaneously hypertensive rats and wild-type rats. We also assessed the protein level and surface expression of CB1 receptor in the RVLM in these rats.

Results

We found that spontaneously hypertensive rats exhibited higher basal BP, HR, and RSNA than wild-type rats. Furthermore, unilateral intra-RVLM microinjections ACEA (0, 10, or 100 nM/0.5 μl/site) increased BP, HR, and RSNA to a greater extent in spontaneously hypertensive rats than in wild-type rats. These effects were abolished by co-administrations of AM251 (500 nM/0.5 μl/site) into the RVLM. In addition, the protein level of CB1 receptor in the RVLM was robustly increased in spontaneously hypertensive rats, which is correlated with ACEA-induced maximum changes of RSNA, and this was also associated with reduced expression of β-arrestin 2 in the RVLM in spontaneously hypertensive rats. Finally, overexpression of β-arrestin 2 in the RVLM in spontaneously hypertensive rats attenuated BP, HR and RSNA.

Conclusion

Taken together, our results suggested that alterations of CB1 receptor desensitization in the RVLM may play a role in the pathogenesis of essential hypertension."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.org/dc/terms/identifier"doi:10.1097/hjh.0000000000001179"xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/author"Li Q."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/author"Zhang Y."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/author"Wang T."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/author"Li G.Q."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/author"Zhang H.P."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/date"2017"xsd:gYear
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/name"J Hypertens"xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/pages"538-545"xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/title"Overactivation of cannabinoid receptor type 1 in rostral ventrolateral medulla promotes cardiovascular responses in spontaneously hypertensive rats."xsd:string
http://purl.uniprot.org/citations/27861247http://purl.uniprot.org/core/volume"35"xsd:string
http://purl.uniprot.org/citations/27861247http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/27861247
http://purl.uniprot.org/citations/27861247http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/27861247
http://purl.uniprot.org/uniprot/#_A0A8I6APG4-mappedCitation-27861247http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/27861247
http://purl.uniprot.org/uniprot/#_A0A8L2QE39-mappedCitation-27861247http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/27861247
http://purl.uniprot.org/uniprot/#_P29067-mappedCitation-27861247http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/27861247
http://purl.uniprot.org/uniprot/P29067http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/27861247
http://purl.uniprot.org/uniprot/A0A8I6APG4http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/27861247
http://purl.uniprot.org/uniprot/A0A8L2QE39http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/27861247