D₂ Receptor ( Ki = 3.9 nM ); D₃ Receptor ( Ki = 0.5 nM ); D₄ Receptor ( Ki = 1.3 nM )

体外活性：普拉克索是一种用于治疗帕金森病症状的新型化学多巴胺激动剂，具有抗氧化活性，并且对缺氧缺血和甲基苯丙胺模型中的黑质多巴胺神经元具有神经保护作用。当与 SH-SY5Y 细胞孵育以及灌注到大鼠纹状体时，普拉克索均可降低甲基吡啶鎓离子 (MPP+) 产生的氧自由基水平。普拉克索还表现出对钙和磷酸盐或 MPP+ 诱导的线粒体过渡孔开放的浓度依赖性抑制。普拉克索剂量依赖性地降低多巴胺代谢物的水平，而纹状体多巴胺水平保持不变。普拉克索在这两种模型中都发挥作用，减少多巴胺周转的升高，以及减少 MAO 活性增加导致的羟自由基产生的升高，而 MAO 活性可能导致黑质纹状体神经元的氧化损伤。 Pramipexole (4-100 mM) 显着减弱 DA 或 L-DOPA 诱导的细胞毒性和细胞凋亡，这种作用不能被 D3 拮抗剂 U-99194 A 或 D2 拮抗剂雷氯必利阻断。 Pramipexole 还以剂量依赖性方式保护 MES 23.5 细胞免受过氧化氢诱导的细胞毒性。普拉克索可以有效抑制黑色素的形成，黑色素是DA或L-DOPA在无细胞系统中氧化产生的最终产物。

普拉克索（0.001-1 mg/kg sc）可降低小鼠的探索性运动活动。普拉克索（1 mg/kg，口服）能够显着降低增加的 DA 周转率，但仅降低 16%。

散发性帕金森病与线粒体电子传递链复合物I的活性缺陷有关。这种电子传递链缺陷通过线粒体DNA传递，当在宿主细胞中表达时，会导致氧自由基产生增加，抗氧化酶活性增加，对程序性细胞死亡的易感性增加。普拉克索是一种用于治疗帕金森病症状的化学新型多巴胺激动剂，具有抗氧化活性，对缺氧缺血性和甲基苯丙胺模型中的黑质多巴胺神经元具有神经保护作用[1]。

Pramipexole (SND 919; 2-amino-4,5,6,7-tetrahydro-6-propyl-amino-benzthiazole- dihydrochloride) was tested for its agonistic activity at pre- and postsynaptic dopamine (DA) receptors. L-Dihydroxyphenylalanine (L-dopa) accumulation in the rat striatum and limbic system and the alpha-methyltyrosine-induced reduction of DA were inhibited. Both effects were fully antagonized by haloperidol but not by the selective DA D1 receptor antagonist SCH 23390. Pramipexole decreased the levels of DA metabolites dose dependently, whereas striatal DA levels remained unchanged. In mice, pramipexole (0.001-1 mg/kg s.c.) reduced exploratory locomotor activity. In rats with unilateral striatal lesions, only weak ipsilateral rotation was produced by pramipexole at the highest dose. However, in rats with unilateral lesions of the medial forebrain bundle, pramipexole potently induced contralateral circling (ED50 0.026 mg/kg s.c.). In the N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) monkey model, pramipexole also had potent stimulatory effects. Finally, in haloperidol-sensitized monkeys, the substance did not elicit dyskinesia/dystonia when given alone, but rather inhibited those symptoms which had been induced by haloperidol (ED50 0.116 mg/kg i.m.). It is concluded that pramipexole has therapeutic potential for schizophrenic patients, as a result of its autoreceptor agonistic effects and its weak effects at normosensitive postsynaptic DA receptors. Furthermore, its potent stimulatory effects in DA-depleted animals suggest a possible use in the treatment of Parkinson's disease.[2]

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We found that pramipexole reduced the levels of oxygen radicals produced by methylpyridinium ion (MPP+) both when incubated with SH-SY5Y cells and when perfused into rat striatum. Pramipexole also exhibited a concentration-dependent inhibition of opening of the mitochondrial transition pore induced by calcium and phosphate or MPP+. These results suggest that pramipexole may be neuroprotective in Parkinson's disease by attenuating intracellular processes such as oxygen radical generation and the mitochondrial transition pore opening, which are associated with programmed cell death.[1]

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0.001-1 mg/kg s.c.; 1 mg/kg, p.o.

Mice

[1]. J Neurochem . 1998 Jul;71(1):295-301.

[2]. Eur J Pharmacol . 1992 May 14;215(2-3):161-70.

Pramipexole hydrochloride is a hydrate that is the monohydrate of the dihydrochloride salt of pramiprexole. It has a role as a dopamine agonist and an antiparkinson drug. It contains a member of pramipexole hydrochloride anhydrous and a pramipexole(2+).
A benzothiazole derivative and dopamine agonist with antioxidant properties that is used in the treatment of PARKINSON DISEASE and RESTLESS LEGS SYNDROME.

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Pramipexole Accord is indicated in adults for treatment of the signs and symptoms of idiopathic Parkinson's disease, alone (without levodopa) or in combination with levodopa, i. e. over the course of the disease, through to late stages when the effect of levodopa wears off or becomes inconsistent and fluctuations of the therapeutic effect occur (end-of-dose or 'on-off' fluctuations).
DAQUIRAN tablets are indicated for treatment of the signs and symptoms of advanced idiopathic Parkinson's disease in combination with levodopa, i. e. over the course of the disease, when the effect of levodopa wears off or becomes inconsistent and fluctuations of the therapeutic effect occur (end of dose or " on off" fluctuations).
Combined vocal and multiple motor tic disorder (de la Tourette), Restless Legs Syndrome

C10H21CL2N3OS

302.2642

301.08

C, 39.74; H, 7.00; Cl, 23.46; N, 13.90; O, 5.29; S, 10.61

191217-81-9

Pramipexole dihydrochloride; 104632-25-9; Dexpramipexole dihydrochloride; 104632-27-1; Pramipexole; 104632-26-0; Dexpramipexole; 104632-28-2

White to off-white solid powder

378ºC at 760 mmHg

290 °C

182.4ºC

9.93E-11mmHg at 25°C

4.1

88.41

APVQOOKHDZVJEX-QTPLPEIMSA-N

InChI=1S/C10H17N3S.2ClH.H2O/c1-2-5-12-7-3-4-8-9(6-7)14-10(11)13-8;;;/h7,12H,2-6H2,1H3,(H2,11,13);2*1H;1H2/t7-;;;/m0.../s1

(6S)-6-N-propyl-4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;hydrate;dihydrochloride

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

配方 1 中的溶解度: ≥ 2 mg/mL (6.62 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将100 μL 20.0 mg/mL澄清DMSO储备液加入400 μL PEG300中，混匀；然后向上述溶液中加入50 μL Tween-80，混匀；加入450 μL生理盐水定容至1 mL。
*生理盐水的制备：将 0.9 g 氯化钠溶解在 100 mL ddH₂O中，得到澄清溶液。

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配方 2 中的溶解度: ≥ 2 mg/mL (6.62 mM) (饱和度未知) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 20.0mg/mL澄清的DMSO储备液加入到900μL 20％SBE-β-CD生理盐水中，混匀。
*20% SBE-β-CD 生理盐水溶液的制备（4°C，1 周）：将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中，得到澄清溶液。

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配方 3 中的溶解度: ≥ 2 mg/mL (6.62 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液。
例如，若需制备1 mL的工作液，可将 100 μL 20.0 mg/mL 澄清 DMSO 储备液加入900 μL 玉米油中，混合均匀。

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配方 4 中的溶解度: 100 mg/mL (330.84 mM) in PBS (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液; 超声助溶.

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。