Projections between the hypothalamus and the dorsal vagal complex in the cat: An HRP and autoradiographic study

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Abstract

The hypothalamus is known to be intimately involved in the control of autonomic function. This study provides detailed information about pathways between the hypothalamus and the dorsal vagal complex in cat. Injection of horseradish peroxidase into the dorsomedial medulla produced retrograde neuronal labeling in the paraventricular nucleus of the hypothalamus. Injection of 3H-leucine into the paraventricular nucleus produced dense anterograde labeling in the dorsal motor nucleus of the vagus, and lighter labeling in the nucleus of the tractus solitarius, particularly in its medial subnucleus. The subnucleus gelatinosus was virtually free of label, except in its medial and lateral portions. Anterograde labeling was distributed bilaterally, with an ipsilateral predominance. Injection of horseradish peroxidase into the area of the paraventricular nucleus produced retrograde neuronal labeling bilaterally in the nucleus of the tractus solitarius and the reticular formation ventrolateral to the dorsal vagal complex. Anterograde terminal labeling overlapped the distribution of retrogradely labeled neurons. These findings are compared to those in rat, and discussed in relation to their functional implications. © 1987.

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APA

J. Willett, C., Rutherford, J. G., Gwyn, D. G., & Leslie, R. A. (1987). Projections between the hypothalamus and the dorsal vagal complex in the cat: An HRP and autoradiographic study. Brain Research Bulletin, 18(1), 63–71. https://doi.org/10.1016/0361-9230(87)90034-7

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