Elsevier

Experimental Neurology

Volume 103, Issue 2, February 1989, Pages 194-198
Experimental Neurology

The uptake of [14C]deoxyglucose into brain of young rats with inherited hydrocephalus

https://doi.org/10.1016/0014-4886(89)90082-4Get rights and content

Abstract

The effect of hydrocephalus on cerebral glucose utilization as reflected by deoxyglucose uptake has been examined in rats with inherited hydrocephalus at 10, 20, and 28 days after birth using a semiquantitative method. Injection of [14C]deoxyglucose intraperitoneally was followed by freezing the brain, sectioning, and quantitative autoradiography of 10 brain regions. Brain [14C] concentration, cortical thickness, and plasma glucose concentrations were measured. Maximal thinning of the cerebral cortex had already occurred by 10 days after birth, although obvious symptoms such as gait disturbance developed after 20 days. In control rats, the cerebral isotope concentration was lower and more homogeneous at 10 days than at 20 or 28 days, which may be a reflection of the use of metabolic substrates other than glucose in younger animals. In order to make comparisons between control and hydrocephalic groups, tissue isotope concentrations were normalized to cerebellar cortex which was not affected by the hydrocephalus at any age. In hydrocephalic rats at 10 and 20 days, the concentration of [14C] was lower in all areas except the inferior colliculi and pons but the reduction was only significant in the sensory-motor cortex at 10 days and in the caudate nuclei at 20 days. By 28 days after birth, all areas except the cerebellum (six cortical regions, inferior colliculi, pons, and caudate) had significantly lower isotope concentrations in the hydrocephalic group. It is concluded that cerebral glucose metabolism is significantly reduced by 28 days after birth in H-Tx rats with congenital hydrocephalus and that less marked reductions occur prior to 28 days.

References (25)

  • G. Dahlquist et al.

    The rate of cerebral utilization of glucose, ketone bodies, and oxygen: A comparative in vivo study of infant and adult rats

    Paediatr. Res.

    (1976)
  • P.M. Daniel et al.

    The effect of age upon the influx of glucose into the brain

    J. Physiol.

    (1978)
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    Present address: Department of Physiology, King's College London, Campden Hill Road, London W8 4AH, England.

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