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Scientific article
English

Quantitative histological studies on the hypothalamic paraventricular nucleus in rats. II. Number of local and certain afferent nerve terminals

Contributors

Kiss, Jozsef Zoltan; Palkovits, M.; Zaborszky, L.; Tribollet, Eliane; Szabo, D.; Makara, G. B.

Published in

Brain research, vol. 265, no. 1, p. 11-20

Publication date

1983

Abstract

The total number and the numerical ratio of extrinsic and intrinsic (local) innervations of magnocellular neurons in the paraventricular nucleus (mPVN) were determined after surgical isolation of the nucleus in rats. Various lesions and transections of fibers running to the mPVN were performed to determine the number and possible sources of septal, hippocampal and caudal periventricular fibers to the mPVN. The relatively high proportion of possibly intrinsic connections (43%) suggests a local, integrative function of neuronal activity in the PVN. On the average, 57% of the total number of presynaptic boutons have been found to originate from outside the nucleus (extrinsic afferentation). Only 7% of these fibers ascend from caudal through the periventricular area. mPVN afferents originating from the ventral subiculum and from the lateral septal nucleus comprise about 3 and 5% of the extrinsic afferentation, respectively.

Keywords

  • Afferent Pathways/anatomy & histology
  • Animals
  • Brain Mapping
  • Hippocampus/anatomy & histology
  • Male
  • Microscopy, Electron
  • Nerve Endings/ultrastructure
  • Paraventricular Hypothalamic Nucleus/ anatomy & histology/cytology
  • Rats
  • Rats, Inbred Strains
  • Septum Pellucidum/anatomy & histology
  • Synapses/ultrastructure

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

KISS, Jozsef Zoltan et al. Quantitative histological studies on the hypothalamic paraventricular nucleus in rats. II. Number of local and certain afferent nerve terminals. In: Brain research, 1983, vol. 265, n° 1, p. 11–20. doi: 10.1016/0006-8993(83)91328-8

Identifiers

Journal ISSN

0006-8993
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Technical informations

Creation

06/08/2010 10:47:14

First validation

06/08/2010 10:47:14

Update

14/03/2023 15:57:26

Status update

14/03/2023 15:57:26

Last indexation

29/10/2024 16:24:25
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