Summary
Separate groups of rats with unilateral 6-OHDA lesions of the nigrostriatal pathway received intrastriatal foetal (E14) substantia nigra suspension grafts, intrastriatal postnatal (P22–25) adrenal medulla suspension grafts using either collagenaseor trypsin-based dissociation procedures, intraventricular adrenal medulla grafts, or remained with lesions alone. Rats with nigral or adrenal suspension grafts, but not rats with adrenal solid grafts, showed reduced apomorphine-induced rotation in comparison with lesion rats. The nigral graft group alone showed substantial reduction of amphetamine-induced rotation, and this was the only group manifesting good long-term graft survival. These results indicate that nigral and adrenal grafts do not have comparable mechanisms of functional action, and suggest that adrenal grafts can ameliorate apomorphine-induced rotation by a non-specific mechanism.
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Brown, V.J., Dunnett, S.B. Comparison of adrenal and foetal nigral grafts on drug-induced rotation in rats with 6-OHDA lesions. Exp Brain Res 78, 214–218 (1989). https://doi.org/10.1007/BF00230701
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DOI: https://doi.org/10.1007/BF00230701