Sökning: "host defense"
Visar resultat 1 - 5 av 263 avhandlingar innehållade orden host defense.
1. Host-bacteria interactions : Host cell responses and bacterial pathogenesis
Sammanfattning : Helicobacter pylori colonizes the human stomach, where it causes gastritis that may develop into peptic ulcer disease or cancer when left untreated. Neisseria gonorrhoeae colonizes the urogenital tract and causes the sexually transmitted disease gonorrhea. LÄS MER
2. Ecology and evolution in a host-parasitoid system : Host search, immune responses and parasitoid virulence
Sammanfattning : In host-parasitoid systems, there is a continuous coevolutionary arms race where each species imposes a strong selection pressure on the other. The host needs to develop defence strategies in order to escape parasitism and the parasitoid must evolve counter-defence strategies in order to overcome the host’s immune defence and successfully reproduce. LÄS MER
3. Novel actions of thrombin-derived host defense peptides
Sammanfattning : Thrombin-derived C-terminal peptides (TCPs) constitute a novel class of immunomodulatory host defense peptides, generated during infection and inflammation. Previous investigations have shown that TCPs of 2-3 kDa inhibit pro-inflammatory immune responses in vitro and in vivo, but their mode of action remained unclear. LÄS MER
4. Bacteria-host cell interactions : Studies on initial colonization, antimicrobial peptides, and biofilms
Sammanfattning : The obligate human pathogen Neisseria meningitidis asymptomatically colonizes the upper respiratory tract, but crossing of the epithelial barrier can cause life-threatening meningitis and/or sepsis. N. LÄS MER
5. Evolutionary and mechanistic aspects of insect host plant preference
Sammanfattning : Plant feeding insects comprise about 25% of all animal species on earth and play an important role in all ecosystems. Although we understand that their association with plants is a key-factor driving the diversification in this group, we still have large gaps in our knowledge of the underlying processes of this relationship. LÄS MER