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Investigation of the association complex formed between dapoxetine and erythrosine-B for facile dapoxetine assay in pharmaceutical formulation using resonance Rayleigh scattering and spectrofluorimetric techniques
Luminescence ( IF 3.2 ) Pub Date : 2021-08-10 , DOI: 10.1002/bio.4133
Sayed M Derayea 1 , Ramadan Ali 2 , Ahmed A Abu-Hassan 2
Affiliation  

Premature ejaculation is a male sexual problem that is marked by rapid ejaculation and quick attainment of orgasm. Dapoxetine belongs to the antidepressant category and modulates its action by preventing the reuptake of serotonin by neurons. Dapoxetine is marketed as an off-label therapy for premature ejaculation. Here, two facile, sensitive, and green compatible approaches were established for dapoxetine assay. The approaches chemically rely on association complex formed between erythrosine-B and dapoxetine in an acidic buffered medium. The quenching effect of the formed complex on the native erythrosine fluorescence at emission 553.5 nm is simply the main idea of spectrofluorimetric assay, while resonance Rayleigh scattering methodology uses augmentation of resonance Rayleigh scattering spectrum at 345 nm by the added dapoxetine. The current approaches exhibit linearity between response and dapoxetine concentration over 0.2–2.5 μg/ml and 0.3–3.0 μg/ml for spectrofluorimetric and resonance Rayleigh scattering (RRS) methods, respectively. All variables affecting methods and complex formation were studied and precisely optimized. The criteria of validation were performed by the directives provided by International Conference on Harmonization's (ICH) Guidelines and limits of detection were 0.06 and 0.05 μg/ml for spectrofluorimetric and RRS techniques, respectively. Finally, the approaches were applied with acceptable results for pharmaceutical formulation analysis.

中文翻译:

使用共振瑞利散射和荧光光谱技术研究达泊西汀和赤藓红-B 之间形成的缔合复合物,用于药物制剂中达泊西汀的简便测定

早泄是一种男性性问题,其特点是射精快和性高潮快。达泊西汀属于抗抑郁药类别,通过阻止神经元对血清素的再摄取来调节其作用。达泊西汀作为早泄的标签外疗法销售。在这里,为达泊西汀测定建立了两种简便、灵敏且绿色兼容的方法。这些方法在化学上依赖于在酸性缓冲介质中赤藓红-B 和达泊西汀之间形成的结合复合物。所形成的复合物对发射 553.5 nm 处的天然赤藓红荧光的猝灭效应只是荧光分光光度法的主要思想,而共振瑞利散射方法使用添加的达泊西汀在 345 nm 处增强共振瑞利散射光谱。对于分光荧光法和共振瑞利散射 (RRS) 方法,当前的方法显示响应和达泊西汀浓度之间的线性分别超过 0.2-2.5 μg/ml 和 0.3-3.0 μg/ml。研究并精确优化了影响方法和复合物形成的所有变量。验证标准由国际协调会议 (ICH) 指南提供的指令执行,荧光分光光度法和 RRS 技术的检测限分别为 0.06 和 0.05 μg/ml。最后,将这些方法应用于药物配方分析,结果可接受。研究并精确优化了影响方法和复合物形成的所有变量。验证标准由国际协调会议 (ICH) 指南提供的指令执行,荧光分光光度法和 RRS 技术的检测限分别为 0.06 和 0.05 μg/ml。最后,将这些方法应用于药物配方分析,结果可接受。研究并精确优化了影响方法和复合物形成的所有变量。验证标准由国际协调会议 (ICH) 指南提供的指令执行,荧光分光光度法和 RRS 技术的检测限分别为 0.06 和 0.05 μg/ml。最后,将这些方法应用于药物配方分析,结果可接受。
更新日期:2021-08-10
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