Changes in the distribution of blood vessels in the rat cerebral hemisphere injured during early postnatal period.
A response of the vascular network of rat cerebral hemisphere to injury inflicted neonatally and on the postnatal day 6 was examined. After the neonatal injury, no change could be recorded, however, following similar lesion made in 6-day-old rats zones of significantly increased vascular density were observed. The data indicate a significant change in the reactivity of cerebral blood vessels to injury occurring during the earliest period of postnatal development. This phenomenon is considered to be parallel to a similar developmental increase in the ability of astroglia to form a reactive gliosis.
Department of Neuroanatomy, Institute of Zoology, Jagiellonian University, Kraków, Poland.
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Janeczko
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Kowalska
D000818:Animals; D000831:Animals, Newborn; D001808:Blood Vessels / Q000502:physiology; D001921:Brain / Q000098:blood supply*; D001930:Brain Injuries / Q000503:physiopathology*; D051381:Rats