PMID: 69883Aug 6, 1977Paper

Pituitary secretes to brain. Experiments in sheep

Lancet
R M BerglandR B Page

Abstract

Because vascular casts of the pituitary demonstrated that there are a few venous connections from the adenohypophysis to the juxtaposed cavernous sinus, it was predicted that some portal vessels must carry blood from the adenohypophysis back to the neurohypophysis. Physiological studies confirmed this prediction and verified earlier observations that blood-flow within the neurohypophysis can be towards the median eminence. In the present study, increased concentrations of prolactin and growth hormone were found in blood sampled from intracranial vessels (internal carotid artery and sagittal sinus). It was concluded that the neurohypophyseal capillary bed not only receives trophic hormones produced in the adenohypophysis but, under certain physiological circumstances, delivers those hormones directly to the brain.

Citations

Jul 1, 1984·Journal of Neurology, Neurosurgery, and Psychiatry·A NicoliniA Carpi
Jan 1, 1987·Neuroscience and Biobehavioral Reviews·D Bitran, E M Hull
Mar 8, 2005·General and Comparative Endocrinology·Fumiyo ToyodaSakaé Kikuyama
Mar 1, 1989·The American Journal of Anatomy·W G Foster, W H Boyd
Mar 1, 1977·The American Journal of Anatomy·R B Page, R M Bergland
Mar 1, 1990·The Journal of Experimental Zoology·G MuccioliP Pattono

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