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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.
Exp Brain Res 1991; 87(2):353-62EB

Abstract

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.

Authors+Show Affiliations

Department of Anatomy, Faculty of Medicine, Kyushu University, Fukuoka, Japan.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

1685128

Citation

Kosaka, T, et al. "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." Experimental Brain Research, vol. 87, no. 2, 1991, pp. 353-62.
Kosaka T, Kosaka K, Nagatsu I. 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. Exp Brain Res. 1991;87(2):353-62.
Kosaka, T., Kosaka, K., & Nagatsu, I. (1991). 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. Experimental Brain Research, 87(2), pp. 353-62.
Kosaka T, Kosaka K, Nagatsu I. 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. Exp Brain Res. 1991;87(2):353-62. PubMed PMID: 1685128.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 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. AU - Kosaka,T, AU - Kosaka,K, AU - Nagatsu,I, PY - 1991/1/1/pubmed PY - 1991/1/1/medline PY - 1991/1/1/entrez SP - 353 EP - 62 JF - Experimental brain research JO - Exp Brain Res VL - 87 IS - 2 N2 - 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. SN - 0014-4819 UR - https://www.unboundmedicine.com/medline/citation/1685128/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_ DB - PRIME DP - Unbound Medicine ER -