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在狗中对 Staphylococcus pseudintermedius 的药理动力学和药理动力学评估

Ji-Soo Jeong¹, Jeong-Won Kim^1,2, Jin-Hwa Kim¹

¹College of Veterinary Medicine (BK21 FOUR Program), Chungnam National University, 99 Daehak-ro, Daejeon 34131, Republic of Korea.

Pathogens (Basel, Switzerland)

|January 8, 2025

概括

这项研究探讨了犬类的阿莫西西林 (AMX) 药理动力学,以对抗Staphylococcus pseudintermedius的抗生素耐药性. 优化剂量间隔显示AMX有效地治疗了易受感染的细菌菌株,指导了更好的临床策略.

科学领域:

兽医药理学兽医药理学
抗微生物耐药性抗微生物耐药性
伴侣动物卫生动物健康

背景情况:

伴侣动物的抗生素耐药性是一个公共卫生问题.
谨慎使用抗生素,以药理动力学/药理动力学 (PK/PD) 为指导,对于减轻耐药性至关重要.
伪中间体葡萄球菌 (Staphylococcus pseudintermedius) 是狗感染中常见的病原体.

研究的目的:

为了研究阿莫西西林 (AMX) 对狗的PK/PD对抗Staphylococcus pseudintermedius.
评估AMX对S. pseudintermedius敏感和耐药菌株的疗效.
在犬类感染中为AMX提供最佳临床剂量策略的信息.

主要方法:

在健康的狗中进行了药理动力学研究,这些狗接受了15mg/kg的皮下剂量AMX.
确定AMX的抗菌疗效与S. pseudintermedius的参考和临床分离物相比.
计算了关键的PK/PD指数,包括半衰期,低于最小抑制度的时间 (%T>MIC),以及24小时/MIC的曲线下的面积.

主要成果:

氨基在狗中呈现了7小时的半衰期,这表明药物存在时间长.
在24小时剂量间隔的80%以上时间里,AMX度保持在敏感菌株 (KCTC 3344,B-2) 的最低抑制度 (MIC) 以上.
PK/PD目标证实了对大多数菌株的细菌静止和杀菌作用,对高度耐药的分离物 (B-7) 的有效性降低.

结论:

阿莫西西林的药理动力学概况支持有效治疗狗群中斯塔菲洛科克菌伪中间体感染.
一天的剂量间隔似乎适合实现对敏感菌株的治疗目标.
这些发现为完善阿莫西西林剂量方案提供了基础,以对抗犬类S. pseudintermedius感染并尽量减少耐药性的发展.

关键词:

在 PK/PD 建模中,使用 PK/PD 模型.抗生素耐药性抗生素耐药性抗微生物药物是一种抗菌药物.剂量剂量剂量剂量剂量暴露于毒品中的药物暴露.

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