کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2591226 1131803 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Markers associated with testosterone enhancement of methamphetamine-induced striatal dopaminergic neurotoxicity
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
Markers associated with testosterone enhancement of methamphetamine-induced striatal dopaminergic neurotoxicity
چکیده انگلیسی

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.


► Male mice received testosterone prior to methamphetamine.
► Testosterone increased body temperature and HSP-70.
► Testosterone decreased body weights, striatal DA and VMAT-2.
► These markers are associated with enhanced neurotoxicity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurotoxicology and Teratology - Volume 34, Issue 3, May–June 2012, Pages 338–343
نویسندگان
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