Loss of striatal somatostatin neurons following prenatal methylazoxymethanol

S. R. Vincent, K. Semba, J. M. Radke, A. Jakubovic, H. C. Fibiger

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5 Citations (Scopus)

Abstract

Prenatal administration of methylazoxymethanol acetate (MAM), which kills neuroblasts undergoing mitosis, was used to lesion striatal somatostatin neurons. Previous [3H]thymidine autoradiographic studies had indicated that striatal somatostatin neurons undergo their final mitotic division at Gestational Days (G) 15 and 16. Therefore, pregnant Sprague-Dawley rats received an intraperitoneal injection of MAM (25 mg/kg) on G15. Neurochemical and histological examination of the mature offspring indicated the loss of half the striatal aspiny interneurons in which somatostatin, neuropeptide Y, and NADPH diaphorase coexist, with relative sparing of the cholinergic interneurons and medium spiny projection cells. This prenatal MAM treatment was without apparent effect on the patchmatrix organization of the striatum.

Original languageEnglish
Pages (from-to)194-200
Number of pages7
JournalExperimental Neurology
Volume110
Issue number2
DOIs
Publication statusPublished - Nov 1990

Bibliographical note

Funding Information:
This research was supported by grants from the Medical Research Council of Canada. S.R.V. is an MRC Scientist, and K.S. an MRC Scholar.

ASJC Scopus Subject Areas

  • Neurology
  • Developmental Neuroscience

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