Periventricular Leucomalacia (PVL)-like Lesions in Two Neonatal Cynomolgus Monkeys ( Macaca fascicularis)

Periventricular leucomalacia (PVL) is a lesion of immature cerebral white matter that occurs in the perinatal period. In man, PVL is the predominant form of brain injury and a cause of cerebral palsy and cognitive deficits in premature infants. PVL affects fetuses and newborns, particularly those wh...

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Bibliographic Details
Published in:Journal of comparative pathology 2011-02, Vol.144 (2), p.204-211
Main Authors: Okabayashi, S., Uchida, K., Nakayama, H., Ohno, C., Hanari, K., Goto, I., Yasutomi, Y.
Format: Article
Language:English
Subjects:
Animals
Animals, Newborn
Cerebral Cortex - pathology
Cerebral Cortex - physiopathology
cynomolgus monkey
Fatal Outcome
Female
Gliosis - complications
Gliosis - pathology
histopathology
Humans
immunohistochemistry
Infant, Newborn
Leukomalacia, Periventricular - etiology
Leukomalacia, Periventricular - pathology
Leukomalacia, Periventricular - physiopathology
Macaca fascicularis
Male
Myelin Sheath - pathology
Oligodendroglia - pathology
periventricular leucomalacia
Premature Birth - pathology
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Summary:Periventricular leucomalacia (PVL) is a lesion of immature cerebral white matter that occurs in the perinatal period. In man, PVL is the predominant form of brain injury and a cause of cerebral palsy and cognitive deficits in premature infants. PVL affects fetuses and newborns, particularly those who have undergone oxygen deprivation as may occur in premature birth. Many clinical and pathological studies of PVL have been performed in man, but there is no clear definition of PVL in animals. A few spontaneous PVL-like cases in puppies or experimental cases in other animal species have been reported. The present study reports the histopathological and immunohistochemical features of PVL-like lesions in two neonatal cynomolgus monkeys. In both cases, there was cerebral white matter necrosis with marked infiltration of lipid-laden phagocytes and a reduction of neurons in the cerebral cortex. In case 1 there was extensive cavitation of the cerebral white matter. In case 2 there was reactive astrocytosis associated with a decrease in oligodendroglial cells and a decrease in cerebral white matter myelin. To our knowledge, this is the first report of PVL-like leucoencephalomalacia in non-human primates.
ISSN:0021-9975
1532-3129
DOI:10.1016/j.jcpa.2010.06.006