<i>Campylobacter</i>and<i>Helicobacter</i>

Joens, Lynn A.; Haesebrouck, Freddy; Pasmans, Frank

doi:10.1002/9780470958209.ch25

Cited by 4 publications

(5 citation statements)

References 161 publications

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“…This is in agreement with in vitro studies on bovine oocytes, which determined that the presence of Cfv did not affect the fertilization or the early embryo development (Bielanski et al, 1994;Joens et al), as it was observed for other reproductive pathogens (Bielansky & Dubuc, 1994;Bielanski et al, 2004).…”

Section: Discussionsupporting

confidence: 90%

“…Some virulence factors that have been associated with the generation of changes in the uterine as well as in the oviductal environment are the microaerophilic property of the bacteria and the production of mucinases. Such changes interfere with the normal embryo development during free life, causing a delay in the implantation and, at a later stage, they lead to embryo death (Hoffer;Garcia et al;Hum;Joens et al, 2010). However, several works on in vitro fertilization of bovine oocytes carried out in the presence of Cfv show that fertilization and early embrionary development would not be affected (Bielanski et al).…”

Section: Introductionmentioning

confidence: 99%

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In vitro Development of Murine Embryos in presence of Campylobacter fetus

Catena

Teruel²,

Morán

et al. 2013

Int. J. Morphol.

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SUMMARY:Bovine campylobacteriosis caused by Campylobacter fetus is associated with reproductive losses. The knowledge about the mechanisms of bacterial pathogenesis is limited, then a murine experimental model is proposed. BALB/c females and males were used. Two-cell embryos were cultured in Ham-F10 as control group (CG). Treatment groups were constituted by the addition of Cfv 1 and 3, or Cff 2 and 5. Morulae were placed in Ham-F10 (CG); treatment groups were constituted by the addition of Cfv27, CFF (cellfree filtrate) and Brucella broth (BB). Blastocysts were cultured in MEM (CG); challenge group were constituted by the addition of Cfv 27. Differentiation, hatching, hatched, adhesion and expansion were evaluated. Results were analyzed by Chi 2 test. In two-cell embryo, the differentiation rate was not modified when the study strains were added (p > 0.05). The differentiation rate at 24 h for embryos at the morula stage was lower for BB, Cfv, and CFF, compared with CG (p < 0.05). After 48 h culture, no differences were observed in blastocyst formation for Cfv and BB, compared to CG (p > 0.05). However, the differentiation rate for the CFF group was lower than for CG (p < 0.05). At 48 and 72 h, the hatching rate was higher in CFF and Cfv groups than in CG (p < 0.05). Differences were not detected in blastocyst cultures. In conclusion, under these experimental conditions, Cf was not detrimental to the development of murine embryos. Efforts will be intensified to establish in vitro infection models that reproduce their pathogenicity.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

In vitro Development of Murine Embryos in presence of Campylobacter fetus

Catena

Teruel²,

Morán

et al. 2013

Int. J. Morphol.

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“…venerealis is one bacteria that cause infertility in cows (Campero, 2002;Catena, 2002;Catena, 2003). However, there is no documented information about Campylobacter effect on sperm cells viability (Bhavsar & Kapadnis, 2006;Brenner et al, 2005;de Melo & Pechére, 1990;Graham & MacDonald, 1988;Joens et al, 2010) and there is no complete agreement on the detrimental role of bacteria presence in the semen.…”

Section: Discussionmentioning

confidence: 99%

Characterization of the Campylobacter fetus subsp. venerealis Adhesion to Bovine Sperm Cells

2016

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“…16 Affected flocks often experience waves of abortions, involving 23.2% of the flock on average. 31 The epidemiology of this disease is further complicated by the high prevalence rate of C. jejuni in domestic flocks, 25 high numbers of healthy sheep with carriage in the bile, 10 and the marked heterogeneity of strains encountered.…”

Section: Discussionmentioning

confidence: 99%

Spatial Distribution of Putative Growth Factors in the Guinea Pig Placenta and the Effects of These Factors, Plasma, and Bile on the Growth and Chemotaxis ofCampylobacter jejuni

Burrough

Şahin

et al. 2011

Vet Pathol

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The pregnant guinea pig is an effective model for studying abortifacient Campylobacter spp, and previous experiments have demonstrated that C. jejuni IA3902 has a marked predilection for the subplacenta while sparing the placental disc in this species. In the study described here, the growth and chemotaxis of IA3902 and a reference strain (NCTC 11168) are compared in the presence of subplacental and placental factors, as well as bile and plasma, from pregnant and nonpregnant guinea pigs. Both strains grew better in subplacental versus placental disc tissue extracts at 24 hours; however, only IA3902 maintained this enhancement at 48 hours. Histochemistry and lectin histochemistry were used to localize mucin, iron, and L-fucose within the placental unit. Mucin was most abundant in subplacental lacunae, the junctional zone, and visceral yolk sac placenta, while iron was most abundant in the placental disc, and L-fucose-containing surface glycans were limited to the visceral yolk sac placenta. These 3 individual factors, along with progesterone and estradiol, were evaluated for effects on growth and chemotaxis of C. jejuni. Mucin, iron, and L-fucose were growth promoting, while L-fucose was also chemoattractive for both strains. Progesterone, estradiol, and pregnant guinea pig plasma did not affect growth or chemotaxis, and no difference was observed when bile from pregnant and nonpregnant animals was compared. These findings demonstrate the presence of specific factors within the guinea pig placental unit that drive chemotaxis and enhance growth of C. jejuni, shedding light on potential mechanisms underlying the fetoplacental tropism observed with this strain.

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CampylobacterandHelicobacter

Cited by 4 publications

References 161 publications

In vitro Development of Murine Embryos in presence of Campylobacter fetus

In vitro Development of Murine Embryos in presence of Campylobacter fetus

Characterization of the Campylobacter fetus subsp. venerealis Adhesion to Bovine Sperm Cells

Spatial Distribution of Putative Growth Factors in the Guinea Pig Placenta and the Effects of These Factors, Plasma, and Bile on the Growth and Chemotaxis ofCampylobacter jejuni

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