Chapter 47: Neuro-hemal and neuro-glial specificities in the neural lobe of the pituitary gland
説明
Publisher Summary Neurovascular specificity, with respect to the number of associations between regrowing neurosecretory axons (NSA) and fenestrated blood vessels (FBV) of the neural lobe may be possible because of the comparatively greater number of vessels and axons that regrow into grafted neural lobe. It has yet to be tested whether the pituicyte of the neural lobe is the cell responsible for the ingrowth of NSA and FBV. Agents such as peptide hormones or neurotransmitters, released into the interstitial compartment of the neural lobe, might regulate the shape and dimensions of the pituicyte. It is also likely that the pituicyte will turn out to be a significant target of these and other agents released within the neural lobe. It is proposed that the pituicyte, in addition to acting as a modulator of peptide hormone release from NSA, might have atrophic influence on the developing, mature and regenerating neurosecretory neuron and, perhaps, on fenestrated capillaries as well.