Transmission of Borrelia spp. via tick vector
نویسندگان
چکیده
منابع مشابه
Borrelia burgdorferi sigma54 is required for mammalian infection and vector transmission but not for tick colonization.
Previous studies have shown that a sigma54-sigma(S) cascade regulates the expression of a few key lipoproteins in Borrelia burgdorferi, the agent of Lyme disease. Here, we demonstrate that these sigma factors, both together and independently, regulate a much more extensive number of genes and cellular processes. Microarray analyses of sigma54 and sigma(S) mutant strains identified 305 genes reg...
متن کاملTick salivary gland extract-activated transmission of Borrelia afzelii spirochaetes.
Saliva-activated transmission of Borrelia afzelii Canica, Nato, du Merle, Mazie, Baranton et Postic, 1993 was demonstrated using salivary gland extract (SGE) from Ixodes ricinus (L., 1758) ticks and C3H mice. Injection of Borrelia spirochaetes together with SGE increased the level of bacteraemia and accelerated the appearance of bacteria in the urinary bladder, compared with the injection of sp...
متن کاملDuration of tick attachment and Borrelia burgdorferi transmission.
Nymphal Ixodes dammini transmitted Borrelia burgdorferi to 1 of 14 rodents exposed for 24 h, 5 of 14 rodents exposed for 48 h, and 13 of 14 rodents exposed for greater than or equal to 72 h. Prompt removal of attached ticks is a prudent public health measure, especially in regions where Lyme disease is endemic.
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Pathogens of the bacterial genus Borrelia differ from fellow spirochetes, Treponema and Leptospira , in their use of arthropod vectors for transmission between warm-blooded hosts. The agents of relapsing fever, Borrelia recurrentis and Borrelia hermsii , are transmitted by lice and fast-feeding soft ticks, respectively , whereas the Lyme disease spirochete, Borrelia burgdorferi (Bb), is transmi...
متن کاملTick Thioester-Containing Proteins and Phagocytosis Do Not Affect Transmission of Borrelia afzelii from the Competent Vector Ixodes ricinus
The present concept of the transmission of Lyme disease from Borrelia-infected Ixodes sp. ticks to the naïve host assumes that a low number of spirochetes that manage to penetrate the midgut epithelium migrate through the hemocoel to the salivary glands and subsequently infect the host with the aid of immunomodulatory compounds present in tick saliva. Therefore, humoral and/or cellular immune r...
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ژورنال
عنوان ژورنال: Medical Entomology and Zoology
سال: 2013
ISSN: 0424-7086,2185-5609
DOI: 10.7601/mez.64.11