Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish.

Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Research Abstract Details 

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Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Abstract Text:

Holly R Campbell,Johannes Meek,Jianmei Zhang,Curtis C Bell,

The cerebellum of mormyrid fish is of interest for its large size and unusual histology. The mormyrid cerebellum, as in all ray-finned fishes, has three subdivisions--valvula, corpus, and caudal lobe. The structures of the mormyrid valvula and corpus have been examined previously, but the structure of the mormyrid caudal lobe has not been studied. The mormyrid caudal lobe includes a posterior caudal lobe associated with the electrosense and an anterior caudal lobe associated with lateral line and eighth nerve senses. In this article we describe cellular elements of the posterior caudal lobe and of the eminentia granularis posterior (EGp) in the mormyrid fish Gnathonemus petersii. The EGp gives rise to the parallel fibers of the posterior caudal lobe. We used intracellular injection of biocytin, extracellular injection of biotinylated dextran amine, and immunohistochemistry with antibodies to gamma-aminobutyric acid, inositol triphosphate receptor I, calretinin, and Zebrin II. The histological structure of the posterior caudal lobe is markedly irregular in comparison to that of the corpus and the valvula, and a tight modular organization of cerebellar elements is less apparent here. Most Purkinje cell bodies are in the middle of the molecular region. Their dendrites are only roughly oriented in the sagittal plane, extend both ventrally and dorsally, and branch irregularly. Climbing fibers terminate only on smooth dendrites near the soma. Most Purkinje cell axons terminate locally on eurydendroid cells that project outside the cortex. The results provide an additional variant to the already large set of different cerebellar and cerebellum-like structures.

Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Publishing Authors By Initials

HR Campbell,J Meek,J Zhang,CC Bell,

For similar nervous system: central nervous system: brain: brain stem: rhombencephalon: metencephalon: cerebellum: cerebellar cortex: purkinje cells research abstracts see: nervous system: central nervous system: brain: brain stem: rhombencephalon: metencephalon: cerebellum: cerebellar cortex: purkinje cells research

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Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of comparative neurology

VOLUME: 502

Page Numbers: 714-35

Journal Abbreviation:

ISSN: 0021-9967

DAY: 10

MONTH: Jun

YEAR: 2007

Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 406041

Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Keywords Mesh Terms:

KEYWORDS: Purkinje Cells

MESH TERMS: ultrastructure

Chemical & Substance for Abstract: Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish. Information

Substance Name: Dextrans

Registry Number: 9004-54-0

Grant and Affiliation Information for Anatomy of the posterior caudal lobe of the cerebellum and the eminentia granularis posterior in a mormyrid fish.

AFFILIATION: Neurological Sciences Institute, Oregon Health and Sciences University, Beaverton, Oregon 97006, USA.

Country: United States

AGENCY: United States NIMH

GRANT: MH64355

ACRONYM: MH

MEDLINETA: J Comp Neurol

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