PMID- 3040461 OWN - NLM STAT- MEDLINE DCOM- 19871015 LR - 20190722 IS - 0014-4886 (Print) IS - 0014-4886 (Linking) VI - 97 IP - 3 DP - 1987 Sep TI - CCK-8 elicits grooming: cross tolerance to ACTH1-24. PG - 697-703 AB - Rats received lateral intracerebroventricular (icv) injection of sulfated or desulfated cholecystokinin octapeptide (CCK-8-S or CCK-8-D, respectively) and subsequent grooming behaviors were observed using a behavioral sampling technique. CCK-8-S (2.0 to 4.0 micrograms in 10 microliter) elicited a significant increase in grooming behaviors relative to the controls, but the relatively inactive CCK-8-D did not. Excessive grooming induced by CCK-8-S produced less grooming than did the adrenocorticotropic hormone fragment, ACTH1-24 (1.0 microgram in 10 microliter). An icv injection of CCK-8-S 3 h before the icv injection of ACTH1-24 inhibited the usual excessive grooming produced by the ACTH. Conversely, prior injection of ACTH1-24 abolished the increased grooming induced by CCK-8-S. Thus, the sulfated cholecystokinin octapeptide and ACTH1-24 exhibited short-term cross tolerance for excessive grooming. These results suggest that the colocalization of corticotropin releasing hormone and CCK-8 in neurons may have functional significance in connection with stress-related neuronal systems. FAU - Kulkosky, P J AU - Kulkosky PJ FAU - Molello, C L AU - Molello CL FAU - Isaacson, R L AU - Isaacson RL LA - eng GR - RR-08197-05/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Exp Neurol JT - Experimental neurology JID - 0370712 RN - 16960-16-0 (Cosyntropin) RN - 9002-60-2 (Adrenocorticotropic Hormone) RN - M03GIQ7Z6P (Sincalide) SB - IM MH - Adrenocorticotropic Hormone/*pharmacology MH - Animals MH - Cosyntropin/*pharmacology MH - Grooming/*drug effects MH - Injections, Intraventricular MH - Male MH - Rats MH - Rats, Inbred Strains MH - Sincalide/*pharmacology EDAT- 1987/09/01 00:00 MHDA- 1987/09/01 00:01 CRDT- 1987/09/01 00:00 PHST- 1987/09/01 00:00 [pubmed] PHST- 1987/09/01 00:01 [medline] PHST- 1987/09/01 00:00 [entrez] AID - 10.1016/0014-4886(87)90126-9 [doi] PST - ppublish SO - Exp Neurol. 1987 Sep;97(3):697-703. doi: 10.1016/0014-4886(87)90126-9.