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  • Title: Detection of Babesia caballi and Babesia equi in Dermacentor nuttalli adult ticks.
    Author: Battsetseg B, Xuan X, Ikadai H, Bautista JL, Byambaa B, Boldbaatar D, Battur B, Battsetseg G, Batsukh Z, Igarashi I, Nagasawa H, Mikami T, Fujisaki K.
    Journal: Int J Parasitol; 2001 Apr; 31(4):384-6. PubMed ID: 11306116.
    Abstract:
    Ticks play an important role in human and veterinary medicine particularly due to their ability to transmit protozoan pathogens. In this study we have demonstrated that polymerase chain reaction (PCR) and nested PCR methods enabled detection of Babesia caballi and Babesia equi in field isolates of Dermacentor nuttalli adult ticks from Mongolia. Primers specific for 218 bp fragment merozoite antigen 1 (EMA-1) gene of B. equi successfully amplified products from all samples of D. nuttalli adult ticks while primers for the 430 bp fragment product from BC48 gene of B. caballi amplified products from seven of the 54 samples. Using PCR and nested PCR methods we have found mixed infections with B. equi and B. caballi in the tick vector. The amplified DNA fragment from D. nuttalli ticks was inserted into the EcoRV site of pBluescript SK and sequenced. The sequence of the 430 bp fragment was completely identical to the nucleotide sequence of the USDA strain of B. caballi. These results suggest that D. nuttalli may play an important role as a vector of both B. caballi and B. equi and also may be important in maintaining endemicity of equine piroplasmosis in Mongolia.
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