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Role of microbiota in mouse experimental model of psoriasis
Jirásková Zákostelská, Zuzana ; Stehlíková, Zuzana ; Klimešová, Klára ; Rossmann, Pavel ; Dvořák, Jiří ; Novosádová, Iva ; Kostovčík, Martin ; Coufal, Štěpán ; Šrůtková, Dagmar ; Hudcovic, Tomáš ; Štěpánková, Renata ; Rob, F. ; Jůzlová, P. ; Herzogová, J. ; Tlaskalová-Hogenová, Helena ; Kverka, Miloslav
Anotace v anglickém jazyce\n\nMouse model of human psoriasis and gnotobiotic are important tools in understanding the role of gut and skin microbiota in pathogenesis of psoriasis. In our experiments we showed that gnotobiotic mice, as well as conventional mice treated with antibiotics, have milder skin inflammation in comparison with control conventional mice. Treatment with broad spectrum antibiotics led to dramatic shift in gut microbial composition, in particular, we observed extensive increase of order Lactobacillales. To analyze the potential effect of Lactobacillales on skin inflammation, we further monocolonized mice with L. plantarum WCFS1. Also monocolonized mice showed lower skin inflammation in comparison with conventional mice. To understand whether microbial dysbiosis is cause or effect of psoriasis needs to be further investigated.\n\n
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Gut microbiome and colorectal cancer
Tlaskalová-Hogenová, Helena ; Klimešová, Klára ; Zákostelská, Zuzana ; Kverka, Miloslav ; Hornová, Michaela ; Vannucci, Luca ; Štěpánková, Renata ; Hudcovic, Tomáš ; Kozáková, Hana ; Rossmann, Pavel
The work deals with metagenomic approaches that are currently being used to decipher the genome of the microbiota (microbiome), and, in parallel, functional studies are being performed to analyze the effects of microbiota on the host.
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Vliv rekombinantní bakterie Lactobacillus plantarum na vývoj pylové alergieL
Schwarzer, Martin ; Repa, A. ; Wiedermann, U. ; Hrnčíř, Tomáš ; Daniel, C. ; Pot, B. ; Štěpánková, Renata ; Hudcovic, Tomáš ; Tlaskalová, Helena ; Součková, Martina ; Kozáková, Hana
Germfree mice were monocolonized with recombinant Lactobacillus plantarum producing Bet v 1. Subsequently mice were sensitized by intraperitoneal injections to Bet v 1. We found out that monocolonization with recombinant L. plantarum reduced the level of specific Bet v 1 specific IgE antibody and stimulated production of INF-gamma in spleen cells supernatants. We conclude that monocolonization by recombinant L. plantarum shifts the immune response towards Th-1 direction and that it is a promising vaccine candidate against type I allergy
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Vliv střevní mikroflóry na endotoxinový šok
Hrnčíř, Tomáš ; Kobayashi, K. ; Flawell, R. A. ; Hudcovic, Tomáš ; Kozáková, Hana ; Štěpánková, Renata ; Tlaskalová, Helena
Endotoxin shock is the most severe complication of sepsis. Lipopolysaccharide (LPS) or endotoxin, a structural component of gram negative bacteria, is a major effector and can activate the innate immune system and lead to multiple organ failure, termed endotoxin shock. In our project we study the effect of intestinal microflora on the susceptibility to endotoxin using a model of germ-free and specific pathogen free mice
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