2021
DOI: 10.1590/1984-3143-ar2021-0008
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Chemotactic behavior of Campylobacter fetus subspecies towards cervical mucus, bovine placenta and selected substances and ion

Abstract: The chemotaxis of C. fetus subsp. venerealis and C. fetus subsp. fetus was determined in the presence of bovine cervical mucus and bovine placental extract. Some reported substances and ion in those materials, such amino acids, ferrous iron, hormones, sugars and organic acids were also investigated. Bovine cervical mucus, bovine placenta extracts and some substances and ion of these materials namely L-fucose, L-aspartate, L-glutamate, L-serine, ferrous iron, fumarate, pyruvate and succinate were chemoattractan… Show more

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“…C. fetus infects the intestinal tract of several mammalian species and induces infertility and abortion in cattle and sheep due to its ability to colonize and translocate to the placenta ( Grogono-Thomas et al, 2000 ; Iraola et al, 2016 ). Chemotaxis assays showed that in high concentrations, C. fetus is a chemoattracted to ferrous iron, pyruvate, fumarate, L-serine, L-aspartate, and L-glutamate, but hormones such as estradiol and progesterone are non-chemotactic for this species ( Haas et al, 2021 ). The placenta is an environment rich in iron since this is essential for development of the fetus ( Peter, 2013 ; Cao and Fleming, 2016 ), and its composition might support the translocation of C. fetus from the gastrointestinal tract to the placenta by chemotaxis.…”
Section: Discussionmentioning
confidence: 99%
“…C. fetus infects the intestinal tract of several mammalian species and induces infertility and abortion in cattle and sheep due to its ability to colonize and translocate to the placenta ( Grogono-Thomas et al, 2000 ; Iraola et al, 2016 ). Chemotaxis assays showed that in high concentrations, C. fetus is a chemoattracted to ferrous iron, pyruvate, fumarate, L-serine, L-aspartate, and L-glutamate, but hormones such as estradiol and progesterone are non-chemotactic for this species ( Haas et al, 2021 ). The placenta is an environment rich in iron since this is essential for development of the fetus ( Peter, 2013 ; Cao and Fleming, 2016 ), and its composition might support the translocation of C. fetus from the gastrointestinal tract to the placenta by chemotaxis.…”
Section: Discussionmentioning
confidence: 99%