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Distribution of anticoagulant resistance in the brown rat in Belgium

机译:比利时褐鼠中抗凝药耐药性的分布

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Anticoagulant resistance is known as one of the major factors interfering with rodent control. Within this context we investigated the distribution of anticoagulant resistance in Flanders, northern Belgium. From 2003 to 2005, we tested 691 rats from different locations with blood clotting response tests for their susceptibility to the anticoagulant compounds warfarin, bromadiolone and difenacoum. Of these, 119 were also screened for a mutation in the VKORC1 gene that is suspected to be responsible for anticoagulant resistance. Warfarin resistant rats were found in the western and eastern parts of Flanders. The same distribution pattern was found for bromadiolone with the exception of the south-eastern area, where this form of resistance was largely absent. We detected difenacoum resistance in only six rats and did not observe any resistant rats in the central part of Flanders. Susceptible rats were found all over Flanders. Genetic analyses showed that anticoagulant resistance in Belgium was related to two different mutations in VKORC1, namely Y139F and L120Q. Our results indicate that rodent control should be regionally tailored to be most effective.
机译:抗凝剂抗性被认为是干扰啮齿动物控制的主要因素之一。在此背景下,我们调查了比利时北部法兰德斯地区抗凝药耐药性的分布。从2003年到2005年,我们通过血液凝固反应测试对来自不同位置的691只大鼠对抗凝剂华法林,溴苯丙隆和地芬那um的敏感性。其中,还对119个VKORC1基因突变进行了筛查,该突变被怀疑与抗凝剂耐药有关。在法兰德斯的西部和东部发现了对华法林有抗药性的大鼠。除东南地区以外,其余地区均未发现这种形式的溴丙二醇隆分布。我们仅在六只大鼠中检测到地芬那草抗药性,而在法兰德斯中部未观察到任何抗药性大鼠。在整个法兰德斯都发现了易感大鼠。遗传分析表明,比利时的抗凝耐药性与VKORC1中的两个不同突变有关,即Y139F和L120Q。我们的结果表明,啮齿类动物的控制应按地区进行调整,以使其最有效。

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