PMID- 1685128 OWN - NLM STAT- MEDLINE DCOM- 19920221 LR - 20190721 IS - 0014-4819 (Print) IS - 0014-4819 (Linking) VI - 87 IP - 2 DP - 1991 TI - Tyrosine hydroxylase-like immunoreactive neurons in the olfactory bulb of the snake, Elaphe quadrivirgata, with special reference to the colocalization of tyrosine hydroxylase- and GABA-like immunoreactivities. PG - 353-62 AB - The distribution and structural features of tyrosine hydroxylase-like immunoreactive (TH-LI) neurons were studied in the olfactory bulb of a snake, Elaphe quadrivirgata, by using pre- and post-embedding immunocytochemistry at the light microscopic level. In contrast to rodent olfactory bulbs previously reported, many TH-LI neurons were seen not only in the main olfactory bulb (MOB) but also in the accessory olfactory bulb (AOB). With regard to the TH-like immunoreactivity, there appeared no appreciable differences between MOB and AOB. As in mammalian MOB, the majority of TH-LI neurons were clustered in the periglomerular region and appeared to send their dendritic branches into glomeruli, which as a whole make an intense TH-LI band in the glomerular layer (GML). In the external plexiform/mitral cell layer (EPL/ML) of MOB and AOB as well as in the outer sublamina of the internal plexiform layer (OSL) of AOB, an appreciable number of TH-LI neurons were scattered, extending dendritic processes which appeared to make a loose meshwork. TH-LI neurons in EPL/ML (including OSL) appeared to consist of at least two morphologically different types. The first had a small perikaryon and one or two smooth dendrites which usually extended to GML and were frequently confirmed to enter into glomeruli. The second had a larger perikaryon and 2-3 dendrites which branched into several varicose processes extending in EPL/ML/OSL but appeared not to enter into glomeruli. The TH-like immunoreactivity was rarely seen in the internal plexiform layer and internal granule cell layer. The colocalization of GABA-like and TH-like immunoreactivities was further studied. Almost all TH-LI neurons in both EPL/ML/OSL and GML contained GABA-like immunoreactivity irrespectively of the type of TH-LI cells. FAU - Kosaka, T AU - Kosaka T AD - Department of Anatomy, Faculty of Medicine, Kyushu University, Fukuoka, Japan. FAU - Kosaka, K AU - Kosaka K FAU - Nagatsu, I AU - Nagatsu I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Exp Brain Res JT - Experimental brain research JID - 0043312 RN - 0 (Antibodies, Monoclonal) RN - 56-12-2 (gamma-Aminobutyric Acid) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) SB - IM MH - Animals MH - Antibodies, Monoclonal MH - Immunoenzyme Techniques MH - Immunohistochemistry MH - Neurons/*cytology MH - Olfactory Bulb/*cytology/enzymology MH - Snakes MH - Telencephalon/cytology/enzymology MH - Tyrosine 3-Monooxygenase/*analysis MH - gamma-Aminobutyric Acid/*analysis EDAT- 1991/01/01 00:00 MHDA- 1991/01/01 00:01 CRDT- 1991/01/01 00:00 PHST- 1991/01/01 00:00 [pubmed] PHST- 1991/01/01 00:01 [medline] PHST- 1991/01/01 00:00 [entrez] AID - 10.1007/BF00231852 [doi] PST - ppublish SO - Exp Brain Res. 1991;87(2):353-62. doi: 10.1007/BF00231852.