Sex-specific regional brain bilirubin content in hyperbilirubinemic Gunn rat pups

Biology of the Neonate
Carrie CannonJon F Watchko

Abstract

The hyperbilirubinemic j/j Gunn rat is frequently used to study the effects of neonatal hyperbilirubinemia on the developing central nervous system (CNS). Despite evidence that the cerebellar region and males are predisposed to bilirubin-induced brain injury in this animal model, there are limited regional and no sex-specific brain bilirubin content data. To characterize and contrast the regional (cortex, brainstem, cerebellum) and sex-specific CNS bilirubin contents of hyperbilirubinemic j/j Gunn rat pups and their age-matched (15-19 days) nonjaundiced J/j counterparts. Pups were injected 24 h prior to sacrifice with sulfadimethoxine (200 mg/kg i.p.) to enhance the CNS bilirubin content. The CNS bilirubin contents in each region and total serum bilirubin levels were significantly greater in jaundiced j/j pups versus nonjaundiced J/j pups. Within the sulfadimethoxine-treated male j/j cohort, the mean brain bilirubin content was highest in the cerebellum (18.9 +/- 7.8 microg/g), intermediate in the brainstem (10.7 +/- 8.0 microg/g), and lowest in the cortex (4.7 +/- 3.0 microg/g) (F = 11.31, p < 0.001 by ANOVA), and the cerebellar bilirubin level was significantly higher than in the littermate-matched sulfadimthoxine-treated j/j...Continue Reading

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Citations

Feb 14, 2009·Journal of Perinatology : Official Journal of the California Perinatal Association·M J DaoodJ F Watchko
Aug 22, 2008·Nursing for Women's Health·Anne M Jorgensen
Dec 22, 2009·Seminars in Fetal & Neonatal Medicine·Jon F Watchko, Zhili Lin
Dec 7, 2006·Clinics in Perinatology·Jon F Watchko

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