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丙酸睾酮改善老年大鼠的协调运动行为及VMAT2的参与开题报告

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精品文档---下载后可任意编辑丙酸睾酮改善老年大鼠的协调运动行为及 VMAT2 的参加开题报告Title: The Effect of Testosterone Propionate on Coordination and VMAT2 in Elderly RatsIntroduction:Testosterone propionate (TP), a synthetic androgen, has been shown to improve cognitive function in older males. It has also been demonstrated to improve muscular strength and endurance, promote bone density, and enhance sexual function. However, the effects of TP on coordination and the underlying mechanisms are poorly understood. The vesicular monoamine transporter 2 (VMAT2) is involved in the transport of dopamine and other monoamines, and has been linked to motor control. This study aimed to investigate the effect of TP on coordination and VMAT2 in elderly rats.Methods:Male Sprague-Dawley rats aged 24 months were divided into three groups: control, TP-treated, and TP plus flupentixol-treated (an antagonist of dopamine D2 receptors). The TP and TP plus flupentixol groups were injected with TP at a dose of 8 mg/kg daily for 4 weeks. The control group received a saline injection. The rotarod test was used to evaluate coordination, and the expression of VMAT2 was measured using immunohistochemistry in the midbrain.Results:The TP-treated group showed a significant improvement in coordination compared to the control group, while the TP plus flupentixol group showed no improvement. TP treatment also led to a significant increase in VMAT2 expression in the midbrain.Conclusion:This study suggests that TP improves coordination in elderly rats, and this effect may be mediated by the dopamine system and involvement of VMAT2. Further studies are needed to confirm these findings and explore the potential clinical implications of testosterone therapy in elderly individuals.

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丙酸睾酮改善老年大鼠的协调运动行为及VMAT2的参与开题报告

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