PMID- 1963485 OWN - NLM STAT- MEDLINE DCOM- 19910409 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 120 IP - 2 DP - 1990 Dec 11 TI - GABAergic mechanisms are involved in the control of tuberoinfundibular arcuate neurons by the accessory olfactory bulb. PG - 231-3 AB - In this study we examined electrophysiologically the involvement of the intrinsic GABAergic system of the accessory olfactory bulb (AOB) in controlling the activity of tuberoinfundibular (TI) arcuate neurons in anaesthetized female mice. Local infusions of the gamma-aminobutyric acid-A (GABAA) receptor antagonist, bicuculline into the AOB enhanced the spontaneous firing activity of TI arcuate neurons with excitatory inputs from the AOB. This finding reveals a neural mechanism responsible for the pregnancy blocking effect of this drug in freely behaving female mice and, taken together with the cytoarchitecture of the AOB, suggests that the reciprocal dendrodendritic interaction between mitral cells and GABAergic granule cells in the AOB is critical to control of AOB output to TI arcuate neurons as part of the final common pathway of the accessory olfactory system. FAU - Li, C S AU - Li CS AD - Department of Physiology, Kochi Medical School, Japan. FAU - Kaba, H AU - Kaba H FAU - Saito, H AU - Saito H FAU - Seto, K AU - Seto K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Receptors, GABA-A) RN - Y37615DVKC (Bicuculline) SB - IM MH - Animals MH - Arcuate Nucleus of Hypothalamus/*physiology MH - Bicuculline/administration & dosage/*pharmacology MH - Electric Stimulation MH - Female MH - Infusions, Parenteral MH - Mice MH - Mice, Inbred BALB C MH - Neurons/drug effects/*physiology MH - Olfactory Bulb/drug effects/*physiology MH - Receptors, GABA-A/*physiology EDAT- 1990/12/11 00:00 MHDA- 1990/12/11 00:01 CRDT- 1990/12/11 00:00 PHST- 1990/12/11 00:00 [pubmed] PHST- 1990/12/11 00:01 [medline] PHST- 1990/12/11 00:00 [entrez] AID - 0304-3940(90)90046-C [pii] AID - 10.1016/0304-3940(90)90046-c [doi] PST - ppublish SO - Neurosci Lett. 1990 Dec 11;120(2):231-3. doi: 10.1016/0304-3940(90)90046-c.