Intrahypothalamically transected neurosecretory axons do not regenerate in the absence of glial cells

Fifteen days after transection of the hypothalamo-neurohypophysial tract at the lateral retrochiasmatic hypothalamic area, neurosecretory axons had vigorously regenerated into transplants of explanted hypophysial neural lobe, to a lesser extent into sciatic nerve transplants, and least into optic ne...

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Published in:Journal of neural transplantation & plasticity 1993-04, Vol.4 (2), p.127-137
Main Authors: Dellmann, H D, Carithers, J
Format: Article
Language:English
Subjects:
Animals
Axons - ultrastructure
Cold Temperature
Extracellular Matrix - pathology
Hypothalamo-Hypophyseal System - injuries
Hypothalamo-Hypophyseal System - physiology
Male
Nerve Regeneration
Neuroglia - physiology
Optic Nerve - transplantation
Pituitary Gland, Posterior - transplantation
Rats
Sciatic Nerve - transplantation
Transplantation, Heterotopic
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Carithers, J
description Fifteen days after transection of the hypothalamo-neurohypophysial tract at the lateral retrochiasmatic hypothalamic area, neurosecretory axons had vigorously regenerated into transplants of explanted hypophysial neural lobe, to a lesser extent into sciatic nerve transplants, and least into optic nerve transplants. Regenerating axons were always closely associated with the specific glial cells of these grafts. When these glial cells were killed by cryotreatment prior to transplantation, neurosecretory axons did not regenerate into the abundant extracellular matrix of the transplants, including persisting basal lamina tubes in neural lobe and sciatic nerve grafts. The presence of viable glial cells is a prerequisite for neurosecretory axon regeneration.
doi_str_mv 10.1155/NP.1993.127
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Regenerating axons were always closely associated with the specific glial cells of these grafts. When these glial cells were killed by cryotreatment prior to transplantation, neurosecretory axons did not regenerate into the abundant extracellular matrix of the transplants, including persisting basal lamina tubes in neural lobe and sciatic nerve grafts. 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subjects Animals
Axons - ultrastructure
Cold Temperature
Extracellular Matrix - pathology
Hypothalamo-Hypophyseal System - injuries
Hypothalamo-Hypophyseal System - physiology
Male
Nerve Regeneration
Neuroglia - physiology
Optic Nerve - transplantation
Pituitary Gland, Posterior - transplantation
Rats
Sciatic Nerve - transplantation
Transplantation, Heterotopic
title Intrahypothalamically transected neurosecretory axons do not regenerate in the absence of glial cells
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