Distribution of heavy metals in the hippocampal region of the guinea pig

Geneser-Jensen, Finn A.; Haug, Finn‐Mogens Šmejda; Danscher, Gorm

doi:10.1007/bf00307249

Cited by 91 publications

(16 citation statements)

References 34 publications

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“…The distribution of zinc-containing boutons in bats is comparable to observations made in the guinea pig, dog, and pig (Geneser-Jensen et al 1974;Holm and Geneser 1989;Wóznicka et al 2006). In the rat and mouse, the staining is moderate in layers Ib and II of MEA and increases gradually across layer III to become very intense at the layer III/IV boundary (Slomianka 1992;Slomianka and Geneser 1991).…”

Section: Chemoarchitectonic Comparisonsupporting

confidence: 80%

The entorhinal cortex of the Megachiroptera: a comparative study of Wahlberg’s epauletted fruit bat and the straw-coloured fruit bat

et al. 2010

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Section: Chemoarchitectonic Comparisonsupporting

confidence: 80%

The entorhinal cortex of the Megachiroptera: a comparative study of Wahlberg’s epauletted fruit bat and the straw-coloured fruit bat

et al. 2010

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“…In the zebra finch, Montagnese et al (1995) referred to this region as the crescent field, and they observed that a dorsomedial subdivision remains unstained using zinc histochemistry (Montagnese et al, 1993a). Zinc staining was found to be intense in the mammalian (Geneser-Jensen et al, 1974) mossy fibre system arising from the granule cells of the dentate gyrus. However, mossy fibres have not been verified in the avian HP (Montagnese et al, 1995).…”

Section: Relevance To the Subdivisions Of The Avian Hippocampusmentioning

confidence: 95%

Efferent connectivity of the hippocampal formation of the zebra finch (Taenopygia guttata): An anterograde pathway tracing study usingPhaseolus vulgaris leucoagglutinin

1996

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The avian hippocampal formation (HP) is considered to be homologous to the mammalian hippocampus, being involved in memory formation and spatial memory in particular. The subdivisions and boundaries of the pigeon hippocampus have been defined previously by various morphological methods to detect further similarities with the mammalian homologue. We studied the efferent projections of the zebra finch hippocampus by applying Phaseolus vulgaris leucoagglutinin, and three main subdivisions were distinguished on the basis of the connectivity patterns. Dorsolateral injections gave rise to projections innervating the rostralmost extension of the HP, a laminar complex including the dorsal and ventral hyperstriata and the lamina frontalis superior, the rostral lobus parolfactorius, the medial and ventral paleostriatal regions, the lateral septal nucleus, the nucleus of the diagonal band, the dorsolateral corticoid area, the archistriatum posterius, and the nucleus taeniae in the telencephalon. In the diencephalon, labelled axons were seen in the periventricular and lateral hypothalamus, including the lateral mammillary nuclei, and in the dorsolateral and the dorsomedial posterior thalamic nuclei, whereas, in the midbrain, only the area ventralis of Tsai contained hippocampal fibres. With the exception of the bilateral archistriatal efferents, all projections were ipsilateral. Dorsomedial injections gave rise to a local fibre system that was almost completely restricted to the ipsilateral hippocampal formation. In addition, lectin-containing fibres continued in the dorsal septal region and a thin band in the hyperstriatum accessorium, adjacent to the lateral ventricle. Ventral injections gave rise to axons innervating ipsilaterally the dorsolateral subdivision, and bilaterally the medial septal nuclei and the contralateral ventral hippocampus.

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“…2j), chinchilla ( Chinchilla laniger , Fig. 2k), guinea pig ( Cavia porcellus ), and rabbit ( Oryctolagus cuniculus ) hippocampus (Geneser-Jensen et al 1974; Geneser 1987). A similar appearance is seen in approximately the septal one-third of the rat (Fig.…”

Section: Histologymentioning

confidence: 99%

Hippocampal pyramidal cells: the reemergence of cortical lamination

et al. 2011

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The increasing resolution of tract-tracing studies has led to the definition of segments along the transverse axis of the hippocampal pyramidal cell layer, which may represent functionally defined elements. This review will summarize evidence for a morphological and functional differentiation of pyramidal cells along the radial (deep to superficial) axis of the cell layer. In many species, deep and superficial sublayers can be identified histologically throughout large parts of the septotemporal extent of the hippocampus. Neurons in these sublayers are generated during different periods of development. During development, deep and superficial cells express genes (Sox5, SatB2) that also specify the phenotypes of superficial and deep cells in the neocortex. Deep and superficial cells differ neurochemically (e.g. calbindin and zinc) and in their adult gene expression patterns. These markers also distinguish sublayers in the septal hippocampus, where they are not readily apparent histologically in rat or mouse. Deep and superficial pyramidal cells differ in septal, striatal, and neocortical efferent connections. Distributions of deep and superficial pyramidal cell dendrites and studies in reeler or sparsely GFP-expressing mice indicate that this also applies to afferent pathways. Histological, neurochemical, and connective differences between deep and superficial neurons may correlate with (patho-) physiological phenomena specific to pyramidal cells at different radial locations. We feel that an appreciation of radial subdivisions in the pyramidal cell layer reminiscent of lamination in other cortical areas may be critical in the interpretation of studies of hippocampal anatomy and function.

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Distribution of heavy metals in the hippocampal region of the guinea pig

Cited by 91 publications

References 34 publications

The entorhinal cortex of the Megachiroptera: a comparative study of Wahlberg’s epauletted fruit bat and the straw-coloured fruit bat

The entorhinal cortex of the Megachiroptera: a comparative study of Wahlberg’s epauletted fruit bat and the straw-coloured fruit bat

Efferent connectivity of the hippocampal formation of the zebra finch (Taenopygia guttata): An anterograde pathway tracing study usingPhaseolus vulgaris leucoagglutinin

Hippocampal pyramidal cells: the reemergence of cortical lamination

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