Abstract
The cerebrospinal fluid (CSF) of 11 premature infants suffering from posthemorrhagic hydrocephalus was examined by radioimmunoassay for prostaglandin (PG) E2, PGF2 alpha, PGD2, 6-keto PGF1 alpha, thromboxane B2 (TxB2) and peptidoleukotrienes (LTC4/LTD4). The LTs were detected in the CSF of more of these patients (70%) than any of the other eicosanoids, and usually in the highest concentration. Among the 11 posthemorrhagic patients CSF eicosanoid levels were highest when determined soon after injury. Moreover, the variety of eicosanoids present, as well as concentrations, in these infants decreased with time. The types of eicosanoids most evident in the CSF of patients who required shunting were TxB2 and LTs, being present together in 5 of 6 (83%) of these infants. In contrast, 1 of 5 (20%) of the patients who did not require this neurosurgical intervention contained both TxB2 and LTs, the remaining having only one or neither eicosanoid. The highest average concentration for each eicosanoid studied was (pg/ml): PGE2, 628; PGF2 alpha, 985; PGD2, 1410; 6-keto PGF1 alpha, 544; TxB2, 486 and LTs, 1229. This study is the first to demonstrate that the CSF of preterm infants may contain a wide variety of eicosanoids and indicates that these lipids are a manifestation of neurological assault.
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