Abstract:
:An increase in the arthritis index as a marker of chronic inflammation and suppression of food intake are observed in adjuvant arthritic (AA) rats. Our previous study demonstrated that central oxytocin (OXT)-ergic pathways were activated potently in AA rats. In the present study, OXT-saporin (SAP) cytotoxin, which chemically disrupts OXT signaling was administered centrally to determine whether central OXT may be involved in the developments of chronic inflammation and alteration of feeding/drinking behavior in AA rats. The arthritis index was significantly enhanced in AA rats pretreated with OXT-SAP administered intrathecally (i.t.) but not intracerebroventricularly (i.c.v.). Suppression of food intake was significantly attenuated transiently in AA rats pretreated with OXT-SAP administered i.c.v. but not i.t. Suppression of drinking behavior was not affected by i.t. or i.c.v. administration of OXT-SAP in AA rats. In addition, intraperitoneal administration of an OXT receptor antagonist did not change the arthritis index or feeding/drinking behavior in AA rats. These results suggest that central OXT-ergic pathways may be involved in anti-inflammation at the spinal level and suppression of feeding behavior at the forebrain-brainstem level in AA rats.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Matsuura T,Kawasaki M,Hashimoto H,Yoshimura M,Motojima Y,Saito R,Ueno H,Maruyama T,Sabanai K,Mori T,Ohnishi H,Sakai A,Ueta Ydoi
10.1016/j.neulet.2016.04.010subject
Has Abstractpub_date
2016-05-16 00:00:00pages
104-110eissn
0304-3940issn
1872-7972pii
S0304-3940(16)30215-4journal_volume
621pub_type
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