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Neurovascular developmental interaction: a specific form of vascular maldevelopment in the malformed brain

✍ Scribed by Shizuo Oi; Mitsunori Matsumae; Futoshi Takei; Masaki Shinoda; Osamu Sato; Satoshi Matsumoto

Publisher: Springer
Year: 1996
Tongue: English
Weight: 955 KB
Volume: 12
Category: Article
ISSN: 0256-7040
DOI: 10.1007/bf00261803

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✦ Synopsis

The process of the development of the intracranial vessels was studied by means of immunohistochemical analysis of factor VIII in normal and exencephalic chick fetuses. The results revealed that the development of blood vessels in exencephalic brain was far advanced beyond the norm, with intense immunoreactivity to factor VIII on postincubation day 16 exceeding that on day 21 in normal controls. Compared with results regarding the direction of the overgrowth in the neuronal maturation process in the previous study using the chick exencephaly model, the findings of overmatured blood vessels were compatible with NSE- and somatostatin-positive elements that appeared especially in the overgrowth foci. The results of the present study suggested the pathogenic development of the "area cerebrovasculosa" in the neural placode as a phenomenon consequent upon hypervascularization in response to neuronal overgrowth, as seen in human cases of exencephaly or anencephaly. We emphasize the significance of this specific phenomenon in the development of the fetal central nervous system, namely neurovascular developmental interaction.

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