Sarizotan
(Synonyms: EMD 128130) 目录号 : GC64530
Sarizotan (EMD 128130) 是具有口服活性的 5-HT1A 受体 和多巴胺受体的激动剂，其 IC50 值分别为 6.5 nM (rat 5-HT1A)、 0.1 nM (human 5-HT1A)、15.1 nM (rat D2)、17 nM (human D2)、6.8 nM (human D3) 和 2.4 nM (human D4.2)。
Cas No.:351862-32-3
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Sarizotan (EMD 128130) is an orally active serotonin 5-HT1A receptor and dopamine receptor agonist. Sarizotan (EMD 128130) exhibits IC50 values of 6.5 nM (rat 5-HT1A), 0.1 nM (human 5-HT1A), 15.1 nM (rat D2), 17 nM (human D2), 6.8 nM (human D3) and 2.4 nM (human D4.2), respectively[1].
Sarizotan concentration-dependently inhibits the electrically-induced contractions with an IC50 value of 150 nM (Emax 40% at 1 mM) [1].
Sarizotan (3, 10 mg/kg, po) at the higher dose slightly decreases 5-HT in the striatum and its metabolite 5-HIAA in frontal cortex and hippocampus. Sarizotan (10 mg/kg, po) substantially increases the DA metabolites DOPAC and HVA in the striatum and frontal cortex[1].Sarizotan represents a new approach for the treatment of extrapyramidal motor complications such as l-DOPA-induced dyskinesia in Parkinson's disease[1].Sarizotan (10 ng and 1 μg, local administration) attenuates levodopa-induced dyskinesias in 6-OHDA-lesioned rats[2].
[1]. G D Bartoszyk, et al. Sarizotan, a Serotonin 5-HT1A Receptor Agonist and Dopamine Receptor Ligand. J Neural Transm (Vienna). 2004 Feb;111(2):113-26.
[2]. C Marin, et al. Local Administration of Sarizotan Into the Subthalamic Nucleus Attenuates Levodopa-Induced Dyskinesias in 6-OHDA-lesioned Rats. Psychopharmacology (Berl). 2009 Jun;204(2):241-50.
| Cas No. | 351862-32-3 | SDF | Download SDF |
| 别名 | EMD 128130 | ||
| 分子式 | C22H21FN2O | 分子量 | 348.41 |
| 溶解度 | DMSO : 100 mg/mL (287.02 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.8702 mL | 14.3509 mL | 28.7018 mL |
| 5 mM | 0.574 mL | 2.8702 mL | 5.7404 mL |
| 10 mM | 0.287 mL | 1.4351 mL | 2.8702 mL |
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| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
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| % DMSO % % Tween 80 % saline | ||||||||||
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工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Potent hERG channel inhibition by Sarizotan, an investigative treatment for Rett Syndrome
J Mol Cell Cardiol 2019 Oct;135:22-30.PMID:31362019DOI:10.1016/j.yjmcc.2019.07.012.
Rett Syndrome (RTT) is an X-linked neurodevelopmental disorder associated with respiratory abnormalities and, in up to ~40% of patients, with prolongation of the cardiac QTc interval. QTc prolongation calls for cautious use of drugs with a propensity to inhibit hERG channels. The STARS trial has been undertaken to investigate the efficacy of Sarizotan, a 5-HT1A receptor agonist, at correcting RTT respiratory abnormalities. The present study investigated whether Sarizotan inhibits hERG potassium channels and prolongs ventricular repolarization. Whole-cell patch-clamp measurements were made at 37 °C from hERG-expressing HEK293 cells. Docking analysis was conducted using a recent cryo-EM structure of hERG. Sarizotan was a potent inhibitor of hERG current (IhERG; IC50 of 183 nM) and of native ventricular IKr from guinea-pig ventricular myocytes. 100 nM and 1 μM Sarizotan prolonged ventricular action potential (AP) duration (APD90) by 14.1 ± 3.3% (n = 6) and 29.8 ± 3.1% (n = 5) respectively and promoted AP triangulation. High affinity IhERG inhibition by Sarizotan was contingent upon channel gating and intact inactivation. Mutagenesis experiments and docking analysis implicated F557, S624 and Y652 residues in Sarizotan binding, with weaker contribution from F656. In conclusion, Sarizotan inhibits IKr/IhERG, accessing key binding residues on channel gating. This action and consequent ventricular AP prolongation occur at concentrations relevant to those proposed to treat breathing dysrhythmia in RTT. Sarizotan should only be used in RTT patients with careful evaluation of risk factors for QTc prolongation.
Current Therapies in Clinical Trials of Parkinson's Disease: A 2021 Update
Pharmaceuticals (Basel) 2021 Jul 25;14(8):717.PMID:34451813DOI:10.3390/ph14080717.
Parkinson's disease (PD) is a progressive neurodegenerative disorder that currently has no cure, but treatments are available to improve PD symptoms and maintain quality of life. In 2020, about 10 million people worldwide were living with PD. In 1970, the United States Food and Drug Administration approved the drug levodopa as a dopamine replacement to manage PD motor symptoms; levodopa-carbidopa combination became commercialized in 1975. After over 50 years of use, levodopa is still the gold standard for PD treatment. Unfortunately, levodopa therapy-induced dyskinesia and OFF symptoms remain unresolved. Therefore, we urgently need to analyze each current clinical trial's status and therapeutic strategy to discover new therapeutic approaches for PD treatment. We surveyed 293 registered clinical trials on ClinicalTrials.gov from 2008 to 16 June 2021. After excluded levodopa/carbidopa derivative add-on therapies, we identified 47 trials as PD treatment drugs or therapies. Among them, 19 trials are in phase I (41%), 25 trials are in phase II (53%), and 3 trials are in phase III (6%). The three phase-III trials use embryonic dopamine cell implant, 5-HT1A receptor agonist (Sarizotan), and adenosine A2A receptor antagonist (caffeine). The therapeutic strategy of each trial shows 29, 5, 1, 5, 5, and 2 trials use small molecules, monoclonal antibodies, plasma therapy, cell therapy, gene therapy, and herbal extract, respectively. Additionally, we discuss the most potent drug or therapy among these trials. By systematically updating the current trial status and analyzing the therapeutic strategies, we hope this review can provide new ideas and insights for PD therapy development.
Sarizotan as a treatment for dyskinesias in Parkinson's disease: a double-blind placebo-controlled trial
Mov Disord 2007 Jan 15;22(2):179-86.PMID:17094088DOI:10.1002/mds.21226.
The objective of this study is to conduct a dose-finding study of Sarizotan in Parkinson's disease (PD) patients with dyskinesia to identify a safe dose and to identify a sensitive dyskinesia rating measure. Sarizotan is a novel compound with full 5-HT(1A) agonist properties and additional high affinity for D(3) and D(4) receptors. An open label study documented improvements in PD patients with levodopa-induced dyskinesia. There is no precedent for study designs or outcome measures in pivotal trials of antidyskinesia therapies. The approach used here was a multicenter, randomized, placebo-controlled, double-blind, parallel study. Included were PD patients optimized to levodopa and dopaminergic drugs with moderately disabling dyskinesias present greater than or equal to 25% of the waking day. Interventions included Sarizotan 2, 4, or 10 mg/day or matching placebo, given in two doses. There were two outcome measures: the primary measure was change from baseline in diary-based on time without dyskinesia; the secondary measures were change from baseline in scores on the Abnormal Involuntary Movement Scale (AIMS), the composite score of Unified Parkinson's Disease Rating Scale (UPDRS) Items 32+33 (dyskinesia duration and disability) and total UPDRS. A total of 398 subjects were randomized, with 381 included in the intention-to-treat population. No significant changes occurred on Sarizotan compared to placebo on any diary-based measure of dyskinesia or the AIMS score. The composite score of UPDRS Items 32+33 was significantly improved with 2 mg/day Sarizotan, with a trend at 10 mg/day. Adverse events were not significantly different in sarizotan- and placebo-treated patients, but off time significantly increased with Sarizotan 10 mg/day. Sarizotan 2 mg/day is a safe agent in PD patients with dyskinesia. To test its role in abating dyskinesia, future studies should focus on this dose and will use the composite score of UPDRS Items 32+33 as the primary outcome.
Investigation of the impact of Sarizotan on the pharmacokinetics of levodopa
Biopharm Drug Dispos 2007 Oct;28(7):339-47.PMID:17654694DOI:10.1002/bdd.558.
Objective: To investigate the effect of Sarizotan on the pharmacokinetics of levodopa in fixed combination with carbidopa or benserazide. Methods: In this open-label, randomized, crossover study, healthy male subjects (n=16) received levodopa 100 mg t.i.d. over two 5-day periods, alone or in combination with Sarizotan 5 mg b.i.d. Levodopa was administered with a dopa-decarboxylase inhibitor (carbidopa 25 mg, n=8 or benserazide 25 mg, n=8). Pharmacokinetic parameters of levodopa were obtained on days 1 and 5. Results: ANOVA showed the C(max) values for levodopa were not significantly different with or without Sarizotan after single doses (1001 vs 1082 ng/ml; point estimate [PE] 1.10, 90% confidence intervals [CI] 0.83-1.45) or at steady-state (1549 vs 1663 ng/ml; PE 1.06, 90% CI 0.89-1.27); nor were AUC values for single doses (1661 vs 1665 ng h/ml; PE 1.01, 90% CI 0.91-1.11) or at steady-state (2462 vs 2482 ng h/ml; PE 1.01, 90% CI 0.97-1.05). Seven subjects reported adverse events of mild-to-moderate intensity; the most frequent were headaches and dizziness. Conclusion: Coadministration of Sarizotan with levodopa, in combination with a dopa-decarboxylase inhibitor had no effect on the pharmacokinetics or adverse event profile of levodopa.
Effects of Sarizotan in animal models of ADHD: challenging pharmacokinetic-pharmacodynamic relationships
J Neural Transm (Vienna) 2015 Sep;122(9):1221-38.PMID:25796190DOI:10.1007/s00702-015-1392-6.
Sarizotan 1-[(2R)-3,4-dihydro-2H-chromen-2-yl]-N-[[5-(4-fluorophenyl) pyridin-3-yl]methyl] methenamine, showed an in vivo pharmaco-EEG profile resembling that of methylphenidate which is used in attention deficit/hyperactivity disorder (ADHD). In turn, we tested Sarizotan against impulsivity in juvenile rats measuring the choice for large delayed vs. a small immediate reward in a T-maze and obtained encouraging results starting at 0.03 mg/kg (plasma levels of ~11 nM). Results from rats treated neonatally with 6-hydroxydopamine (6-OHDA), also supported anti-ADHD activity although starting at 0.3 mg/kg. However, microdialysis studies revealed that free brain concentration of Sarizotan at active doses were below its affinity for 5-HT1A receptors, the assumed primary target. In contrast, electrophysiological experiments in mid-brain Raphé serotonergic cells paralleled by plasma sampling showed that there was ~60% inhibition of firing rate—indicating significant activation of 5-HT1A receptors—at a plasma concentration of 76 nM. In line with this, we observed that Sarizotan concentrations in brain homogenates were similar to total blood levels but over 500 fold higher than free extracellular fluid (ECF) concentrations as measured using brain microdialysis. These data suggest that Sarizotan may have potential anti-ADHD effects at low doses free of the previously reported side-effects. Moreover, in this case a classical pharmacokinetic-pharmacodynamic relationship based on free brain concentrations seems to be less appropriate than target engagement pharmacodynamic readouts.