PMID- 15597191 OWN - NLM STAT- MEDLINE DCOM- 20050802 LR - 20151119 IS - 0340-2061 (Print) IS - 0340-2061 (Linking) VI - 209 IP - 2 DP - 2004 Dec TI - Differences in development and cellular composition between neuronal cultures of rat accessory and main olfactory bulbs. PG - 129-36 AB - We previously established a primary culture system of the accessory olfactory bulb (AOB) to investigate the functional roles of individual types of neuron in pheromonal signal processing. However, the detailed characteristics of cultured AOB neurons were not yet apparent. In the present study, we address the cytological aspects of cultured AOB neurons using immunocytochemical staining methods. Cultured AOB neurons were compared with cultured main olfactory bulb (MOB) neurons in neuronal composition, maturational time course, and cell size. The number of total neurons, measured by microtubule-associated protein 2 (MAP2) immunostaining, progressively decreased, and glutamic acid decarboxylase positive (GAD+) interneurons were scarcely changed in their number in both AOB and MOB cultures over the culture periods. In contrast, the number of tyrosine hydroxylase positive (TH+) neurons in AOB cultures showed a slight, but significant, increase over time in culture, while those in MOB cultures remarkably decreased. The numbers of total neurons and GAD+ neurons were significantly greater in AOB cultures than in MOB cultures at all investigated time points. However, the numbers of TH+ neurons were lower at 7 days in vitro (DIV) and greater at 21 DIV in AOB cultures than in MOB cultures. The somatic sizes of all types of neurons at 14 DIV were significantly larger in AOB cultures than in MOB cultures. Furthermore, the frequency distributions of somatic sizes of total, GAD+, and TH+ neurons were significantly different between AOB and MOB cultures. These subtle differences in vitro may reflect in vivo differences between the AOB and MOB. FAU - Muramoto, Kazuyo AU - Muramoto K AD - Department of Integrative Physiology, Kochi Medical School, Kohasu, Nankoku, 783-8505, Kochi, Japan. tkazuyo@med.kochi-u.ac.jp FAU - Kato-Negishi, Midori AU - Kato-Negishi M FAU - Kuroda, Yoichiro AU - Kuroda Y FAU - Kaba, Hideto AU - Kaba H FAU - Ichikawa, Masumi AU - Ichikawa M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20041119 PL - Germany TA - Anat Embryol (Berl) JT - Anatomy and embryology JID - 7505194 RN - 0 (Biomarkers) RN - 0 (Microtubule-Associated Proteins) RN - 56-12-2 (gamma-Aminobutyric Acid) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) RN - EC 4.1.1.15 (Glutamate Decarboxylase) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Biomarkers MH - Cell Count MH - Cell Differentiation/*physiology MH - Cell Size MH - Cells, Cultured MH - Dopamine/metabolism MH - Glutamate Decarboxylase/metabolism MH - Immunohistochemistry MH - Interneurons/cytology/metabolism MH - Microtubule-Associated Proteins/metabolism MH - Neurons/*cytology/metabolism MH - Olfactory Bulb/*cytology/*embryology/metabolism MH - Rats MH - Rats, Wistar MH - Time Factors MH - Tyrosine 3-Monooxygenase/metabolism MH - gamma-Aminobutyric Acid/metabolism EDAT- 2004/12/15 09:00 MHDA- 2005/08/03 09:00 CRDT- 2004/12/15 09:00 PHST- 2004/09/07 00:00 [accepted] PHST- 2004/12/15 09:00 [pubmed] PHST- 2005/08/03 09:00 [medline] PHST- 2004/12/15 09:00 [entrez] AID - 10.1007/s00429-004-0432-z [doi] PST - ppublish SO - Anat Embryol (Berl). 2004 Dec;209(2):129-36. doi: 10.1007/s00429-004-0432-z. Epub 2004 Nov 19.