期刊
NEUROTOXICOLOGY AND TERATOLOGY
卷 34, 期 3, 页码 336-341出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ntt.2012.03.003
关键词
Heat Shock Protein-70 (HSP-70); Progesterone; Testosterone propionate; Body temperature; Body weight; Nigrostriatal dopaminergic
资金
- NEOMED
Intact male CD-1 mice received an injection of testosterone propionate (TP - 5 ug), progesterone (P - 5 mg), the oil vehicle or remained untreated (control). At 24 hours after hormonal treatments the mice received an injection of methamphetamine (MA - 40 mg/kg) and rectal temperatures were measured. At 5 days post-MA, assays were performed to assess effects of these treatments. Maximal increases in body temperatures, that were significantly greater than oil-treated controls, were obtained in TP-treated mice. At 5 days post-MA, maximal weight reductions were obtained with TP-treated mice, while P-treated mice showed no significant decrease between the pre- versus post-MA determinations. Striatal dopamine concentrations showed maximal reductions and heat-shock protein-70 maximal increases in the TP group, with both differing significantly as compared with all other groups. Protein levels of dopamine transporters were significantly decreased in P-treated mice, while vesicular monoamine transporter-2 was significantly decreased in TP-treated mice. Taken together, these results suggest that testosterone exacerbates the deleterious effects of MA within male mice as indicated by a number of markers related to neurotoxicity. The changes in markers as associated with this enhanced neurotoxicity suggest that TP may increase thermal/energy responses and/or oxidative stress to produce this effect. (C) 2012 Elsevier Inc. All rights reserved.
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