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首页> 外文期刊>Journal of dairy research >Detection of Brucella spp. in soft cheese by semi-nested polymerase chain reaction
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Detection of Brucella spp. in soft cheese by semi-nested polymerase chain reaction

机译:布鲁氏菌属的检测。半嵌套式聚合酶链反应在软干酪中

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摘要

Brucellae are Gram-negative bacteria with a predilection for the reticuloendothelial system and the reproductive tract of cattle, sheep, goats and pigs. In these species brucellosis is of great econorhic significance because of the resulting abortion and infertility (Samartino et al. 1993; Corbel, 1997; Altecruse et al. 1998). Human brucellosis, caused by contamination from infected animals (percutaneous, conjunctival or nasal infection), is very common and remains a serious health hazard in Mediterranean Europe, western Asia, and parts of Africa and South America (Boschiroli et al. 2001). Raw milk, butter, icecream and unpasteurized cheese are also potential vehicles for the transmission of Brucella. The control of dairy products for the absence of Brucella spp. is important for public health, and rapid, sensitive, specific diagnostic tests are needed to identify infected animals and contaminated foods. Several PCR assays have been developed recently (Allmann et al. 1995) for the detection of genus-specific or species-specific sequences of Brucella. The tests were used on blood samples (Ouahrani-Bttache et al. 1996; Tcherneva et al. 1996; Morata et al. 1999) and on milk and cheese samples (Serpe et al. 1999; Tantillo et al. 2001), but are not yet in routine use. The objective of this study was to improve the sensitivity of the PCR method for Brucella spp. described previously (Tantillo et al. 2001) for screening dairy products, which are complex food matrices with a high content of endogenous inhibitors of Taq polymerase (Rossen et al. 1992; Wilson, 1997; Al-Soud et al. 1998).
机译:布鲁氏菌是革兰氏阴性细菌,倾向于网状内皮系统以及牛,绵羊,山羊和猪的生殖道。在这些物种中,布鲁氏菌病由于导致流产和不育而具有重大的经济意义(Samartino等,1993; Corbel,1997; Altecruse等,1998)。由感染动物(经皮,结膜或鼻腔感染)污染引起的人类布鲁氏菌病非常普遍,在地中海欧洲,西亚以及非洲和南美的部分地区仍然严重危害健康(Boschiroli等,2001)。生奶,黄油,冰淇淋和未经巴氏杀菌的奶酪也是布鲁氏菌传播的潜在媒介。布鲁氏菌不存在时乳制品的控制。这对于公共卫生非常重要,因此需要快速,灵敏,特定的诊断测试来识别受感染的动物和受污染的食物。最近已经开发了几种PCR测定法(Allmann等,1995),用于检测布鲁氏菌属的属特异性或种属特异性序列。这些测试用于血液样本(Ouahrani-Bttache等,1996; Tcherneva等,1996; Morata等,1999)以及牛奶和奶酪样本(Serpe等,1999; Tantillo等,2001),但是尚未常规使用。这项研究的目的是提高PCR方法对布鲁氏菌属的敏感性。 (Tantillo等,2001)描述了用于筛选乳制品的乳制品,所述乳制品是具有高含量的Taq聚合酶的内源性抑制剂的复杂食品基质(Rossen等,1992; Wilson,1997; Al-Soud等,1998)。

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