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Nishizuka M, Pfaff DW. Medial preoptic islands in the rat brain: electron microscopic evidence for intrinsic synapses. Exp Brain Res. 1989;77(2):295-301doi: 10.1007/BF00274986.
Nishizuka, M., & Pfaff, D. W. (1989). Medial preoptic islands in the rat brain: electron microscopic evidence for intrinsic synapses. Experimental brain research, 77(2), 295-301. https://doi.org/10.1007/BF00274986
Nishizuka, M, and Pfaff, D W. "Medial preoptic islands in the rat brain: electron microscopic evidence for intrinsic synapses." Experimental brain research vol. 77,2 (1989): 295-301. doi: https://doi.org/10.1007/BF00274986
Nishizuka M, Pfaff DW. Medial preoptic islands in the rat brain: electron microscopic evidence for intrinsic synapses. Exp Brain Res. 1989;77(2):295-301. doi: 10.1007/BF00274986. PMID: 2676575.
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Exp Brain Res. 1989;77(2):295-301. doi: 10.1007/BF00274986.

Medial preoptic islands in the rat brain: electron microscopic evidence for intrinsic synapses.

Experimental brain research

M Nishizuka, D W Pfaff

Affiliations

  1. Laboratory of Neurobiology and Behavior, Rockefeller University, New York, NY 10021.

PMID: 2676575 DOI: 10.1007/BF00274986

Abstract

Neurons intrinsic to the preoptic area might participate in the control of neuroendocrine or behavioral events. To determine their existence and features, we deafferented the preoptic area of female rats, using completely circumscribing cuts with a Halasz knife. Despite obvious signs of degeneration of synapses originating from nerve cell bodies outside the preoptic island, some synapses survived complete deafferentation. We saw synaptic contacts not only on the neuronal cell body, but also on the dendritic shaft and spine. There were no peculiar morphological features, as might suggest unique physiologic functions of these intrinsic synapses. The prominence of intrinsic synapses in the preoptic area suggests that, in addition to hormone effects on preoptic neurons, and long ascending afferents, intrinsic synapses might play significant roles in neuroendocrine controls.

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