Abstract
A critical gap exists in our knowledge of the topographical relationship between the olfactory epithelium and olfactory bulb. The present report describes the application to this problem of a method involving horseradish peroxidase conjugated to wheat germ agglutinin. This material was iontophoretically delivered to circumscribed glomeruli in the olfactory bulb and the characteristics and distribution of retrogradely labeled receptor cells were assessed. After discrete injections into small glomerular groups in the caudomedial bulb, topographically defined populations of receptor cells were labeled. Labeled receptor cell somata appeared at several levels within the epithelium. The receptor cell apical dendrites followed a tight helical course towards the surface of the epithelium. The data thus far demonstrate that functional units within the olfactory system may include not only glomeruli as previously suggested but, in addition, a corresponding matrix of receptor cells possessing functional and topographical specificity.
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- CLARK W. E. le G. The projection of the olfactory epithelium on the olfactory bulb in the rabbit. J Neurol Neurosurg Psychiatry. 1951 Feb;14(1):1–10. doi: 10.1136/jnnp.14.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- CLARK W. L. Inquiries into the anatomical basis of olfactory discrimination. Proc R Soc Lond B Biol Sci. 1957 May 7;146(924):299–319. doi: 10.1098/rspb.1957.0013. [DOI] [PubMed] [Google Scholar]
- Dubois-Dauphin M., Tribollet E., Dreifuss J. J. Relations somatotopiques entre la muqueuse olfactive et le bulbe olfactif chez le triton. Brain Res. 1981 Aug 31;219(2):269–287. doi: 10.1016/0006-8993(81)90291-2. [DOI] [PubMed] [Google Scholar]
- Grafe M. R., Leonard C. M. Developmental changes in the topographical distribution of cells contributing to the lateral olfactory tract. Brain Res. 1982 Mar;255(3):387–400. doi: 10.1016/0165-3806(82)90006-2. [DOI] [PubMed] [Google Scholar]
- Greer C. A., Stewart W. B., Teicher M. H., Shepherd G. M. Functional development of the olfactory bulb and a unique glomerular complex in the neonatal rat. J Neurosci. 1982 Dec;2(12):1744–1759. doi: 10.1523/JNEUROSCI.02-12-01744.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kauer J. S. Olfactory receptor cell staining using horseradish peroxidase. Anat Rec. 1981 Jul;200(3):331–336. doi: 10.1002/ar.1092000313. [DOI] [PubMed] [Google Scholar]
- Kiang N. Y., Rho J. M., Northrop C. C., Liberman M. C., Ryugo D. K. Hair-cell innervation by spiral ganglion cells in adult cats. Science. 1982 Jul 9;217(4555):175–177. doi: 10.1126/science.7089553. [DOI] [PubMed] [Google Scholar]
- LaVail J. H., LaVail M. M. The retrograde intraaxonal transport of horseradish peroxidase in the chick visual system: a light and electron microscopic study. J Comp Neurol. 1974 Oct 1;157(3):303–357. doi: 10.1002/cne.901570304. [DOI] [PubMed] [Google Scholar]
- Lancet D., Greer C. A., Kauer J. S., Shepherd G. M. Mapping of odor-related neuronal activity in the olfactory bulb by high-resolution 2-deoxyglucose autoradiography. Proc Natl Acad Sci U S A. 1982 Jan;79(2):670–674. doi: 10.1073/pnas.79.2.670. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Land L. J., Eager R. P., Shepherd G. M. Olfactory nerve projections to the olfactory bulb in rabbit: demonstration by means of a simplified ammoniacal silver degeneration method. Brain Res. 1970 Oct 13;23(2):250–254. doi: 10.1016/0006-8993(70)90044-2. [DOI] [PubMed] [Google Scholar]
- Land L. J. Localized projection of olfactory nerves to rabbit olfactory bulb. Brain Res. 1973 Dec 7;63:153–166. doi: 10.1016/0006-8993(73)90084-x. [DOI] [PubMed] [Google Scholar]
- Land L. J., Shepherd G. M. Autoradiographic analysis of olfactory receptor projections in the rabbit. Brain Res. 1974 Apr 26;70(3):506–510. doi: 10.1016/0006-8993(74)90259-5. [DOI] [PubMed] [Google Scholar]
- Mesulam M. M. The blue reaction product in horseradish peroxidase neurohistochemistry: incubation parameters and visibility. J Histochem Cytochem. 1976 Dec;24(12):1273–1280. doi: 10.1177/24.12.63512. [DOI] [PubMed] [Google Scholar]
- Rafols J. A., Getchell T. V. Morphological relations between the receptor neurons, sustentacular cells and Schwann cells in the olfactory mucosa of the salamander. Anat Rec. 1983 May;206(1):87–101. doi: 10.1002/ar.1092060111. [DOI] [PubMed] [Google Scholar]
- Teicher M. H., Stewart W. B., Kauer J. S., Shepherd G. M. Suckling pheromone stimulation of a modified glomerular region in the developing rat olfactory bulb revealed by the 2-deoxyglucose method. Brain Res. 1980 Aug 4;194(2):530–535. doi: 10.1016/0006-8993(80)91237-8. [DOI] [PubMed] [Google Scholar]