首页> 美国卫生研究院文献>Antimicrobial Agents and Chemotherapy >Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (Artemia spp.) used for prophylactic chemotherapy of fish.
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Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (Artemia spp.) used for prophylactic chemotherapy of fish.

机译:液相色谱法测定将甲氧苄啶和磺胺甲基异恶唑掺入用于鱼的预防性化疗的卤水虾(卤虫)中的功效。

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摘要

The brine shrimp Artemia, an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in Artemia franciscana, a sensitive and specific analytical method was developed. It is based on homogenization of Artemia nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C18 cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 micrograms/g with a sample quantity of 30 mg [dry weight]) and reproducible (coefficients of variation, 2.2 and 1.8% for trimethoprim and sulfamethoxazole at levels of 79.6 and 257 micrograms/g of body weight, respectively). Preliminary quantitative data indicated excellent uptake and persistence of both therapeutic agents in A. franciscana, with levels of 115 micrograms/g for trimethoprim and 277 micrograms/g for sulfamethoxazole.
机译:卤水虾Artemia是水产养殖中极佳的活食来源,已被研究为将选定的化学治疗剂输送到鱼类中以预防传染病的载体。为监测甲氧苄啶和磺胺甲恶唑在法国大花蒿中的掺入效率,开发了一种灵敏而特异的分析方法。它基于将无节肢动物无节幼体在甲醇中匀浆,用己烷萃取脂质,在C18柱上进行固相净化,以及在210 nm处检测的反相液相色谱法。该方法灵敏(检出限为3微克/克,样品量为30毫克[干重])并且可重复性(甲氧苄啶和磺胺甲恶唑的变异系数分别为2.2和1.8%,分别为79.6和257微克) / g体重)。初步的定量数据表明,两种治疗剂在曲霉菌中的吸收和持久性都很好,甲氧苄啶的水平为115微克/克,磺胺甲恶唑的水平为277微克/克。

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