Sökning: "in vivo fitness"

Visar resultat 1 - 5 av 38 avhandlingar innehållade orden in vivo fitness.

1. 1. Antibiotic Resistance and Fitness of Escherichia coli in the Infantile Commensal Microbiota

   Författare :Nahid Karami; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ampicillin; tetracycline; in vivo fitness; persistence; gene transfer; intestinal; blaTEM Escherichia coli;

   Sammanfattning : Microbial resistance to antibiotics is a growing problem worldwide. Resistance develops not only in microbes which are the targets of the antibiotic treatment, but also in those belonging to the normal microbiota of the treated host. Little is known on the ecological consequences of antibiotic resistance in commensal bacteria. LÄS MER

3. 2. Tamiflu in the Water : Resistance Dynamics of Influenza A Virus in Mallards Exposed to Oseltamivir

   Författare :Anna Gillman; Josef D Järhult; Björn Olsen; Shaman Muradrasoli; Elena Govorkova; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Influenza A virus; avian influenza; oseltamivir; neuraminidase inhibitors; resistance; environmental; Mallard; waterfowl; Medical Science; Medicinsk vetenskap;

   Sammanfattning : The natural reservoir of influenza A virus (IAV) is wild waterfowl, and all human IAVs have their genetic origins from avian viruses. Neuraminidase inhibitors (NAIs) are currently the best drugs for treatment of human influenza; therefore, the orally available NAI oseltamivir (Tamiflu®) has been stockpiled worldwide as part of pandemic preparedness planning. LÄS MER

4. 3. Influences of in vivo and in vitro loading on the proteoglycan synthesis of articular cartilage chondrocytes

   Författare :Mikko Lammi; Markku Tammi; Jukka Finne; Tim Hardingham; Finland Kuopio University of Kuopio Department of Anatomy; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Articular cartilage; proteoglycans; loading; stress; hydrostatic pressure; biokemi; Biochemistry; cell research; cellforskning; molekylärbiologi; Molecular Biology; ortopedi; Orthopaedics;

   Sammanfattning : In this study, the biosynthesis of proteoglycans (PGs) was examined in articular cartilage of canine hip joint after long-distance running experiment and in bovine chondrocyte cultures during in vitro loading with hydrostatic pressure. In addition, new assays were developed for more sensitive quantitation of glycosaminoglycans (GAGs) and PGs. LÄS MER

5. 4. Multi-Resistance Plasmids : Fitness Costs, Dynamics and Evolution

   Författare :Fredrika Rajer; Linus Sandegren; Pål Jarle Johnsen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; multi-resistance plasmids; evolution; fitness cost; dynamics; escherichia coli; ESBL; gene amplification; β-lactamase inhibitor; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

   Sammanfattning : 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. LÄS MER

7. 5. Evolution and Mechanisms of Tigecycline Resistance in Escherichia coli

   Författare :Marius Linkevičius; Dan I. Andersson; Linus Sandegren; Patrice Courvalin; Uppsala universitet; []
   Nyckelord :Tigecycline; Bacterial resistance; Fitness; Escherichia coli; AcrAB; LPS; Tet proteins; Tet A ; Tet K ; Tet M ; Tet X ; tet genes; pUUH239.2; Mikrobiologi; Microbiology;

   Sammanfattning : Antibiotic resistance is an ongoing global medical crisis and we are in great need of new antibacterial agents to combat rapidly emerging resistant pathogens. Tigecycline is one of few drugs that have been introduced into medicine during the last two decades. LÄS MER