Search for dissertations about: "fitness costs"
Showing result 1 - 5 of 79 swedish dissertations containing the words fitness costs.
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1. Multi-Resistance Plasmids : Fitness Costs, Dynamics and Evolution
Abstract : Antibiotic resistance is an escalating problem, not only due to less desirable treatment options and outcome, but also due to the economic burden to health care caused by resistant pathogens. Since the process of developing new antibiotics is slow, we need to carefully consider the usage of the antibiotics still available. READ MORE
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2. Removal and Replacement of Ribosomal Proteins : Effects on Bacterial Fitness and Ribosome Function
Abstract : Protein synthesis is a complex process performed by sophisticated cellular particles known as ribosomes. Although RNA constitutes the major structural and functional component, ribosomes from all kingdoms contain an extensive array of proteins with largely undefined functional roles. READ MORE
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3. Resistance to Fluoroquinolones in Escherichia coli: Prevention, Genetics and Fitness Costs
Abstract : Antibiotic-resistant bacteria are increasingly a major healthcare problem but very few new classes of antibiotics have been discovered or launched in recent decades. Approaches to dealing with the problem include learning how bacteria evolve to resistance and improving dosing regimens with current antibiotics so as to reduce the selection of resistant bacteria. READ MORE
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4. Costs and Tactics in the Evolution of Reproductive Effort
Abstract : This study focuses on various aspects of costs of reproduction and the evolution of energetic breeding tactics. It emphasizes the distinction between demographic costs of reproduction expressed already before current offspring have reached independence (prebreeding costs), and costs expressed only after offspring independence (postbreeding costs). READ MORE
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5. Mechanisms of Antibiotic Resistance Evolution
Abstract : The continuing emergence and spread of antibiotic resistant bacteria are a threat to various applications in modern medicine and impose a strong economic burden on health systems. The development of new antibiotics is slow and cannot counterbalance the dissemination of resistant bacteria. READ MORE