Sökning: "reversibility"

Visar resultat 6 - 10 av 60 avhandlingar innehållade ordet reversibility.

1. 6. Antibiotic Resistance and Population Dynamics of Escherichia coli in Relation to a Large Scale Antibiotic Consumption Intervention

   Författare :Martin Sundqvist; Otto Cars; Gunnar Kahlmeter; Dan I Andersson; Jordi Vila; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; reversibility; trimethoprim; dfr; associated resistance; MLST; Infectious diseases; Infektionssjukdomar; Clinical bacteriology; Klinisk bakteriologi; Medical microbiology; Medicinsk mikrobiologi; Infectious Diseases; Infektionssjukdomar;

   Sammanfattning : Antibiotic resistance challenges the practice and development of modern medicine. The aim of this thesis was to test the hypothesis that antibiotic resistance is reversible once the selection pressure of an antibiotic is removed. LÄS MER

3. 7. Harm and harm reduction in smokeless tobacco users. An in vitro and clinical study

   Författare :Mats Wallström; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cessation; nicotine replacement; smokeless tobacco; immunotoxicity; oral mucosa; snuff; reversibility; Langerhans cells; rat oral epithelium; nicotine;

   Sammanfattning : Background: This thesis describes the effects of smokeless tobacco (ST) and its derivatives on the oral mucosa; the development of, and results of applying a cessation program for snuff users with long and extensive exposure; and the persistent clinical and histomorphological changes after cessation. Methods: Three of the studies were open prospective non-randomized clinical intervention trials using nicotine replacement therapy (NRT) of either 4 mg nicotine chewing gum or 2 mg nicotine lozenges. LÄS MER

4. 8. The search for reversibility of Idiopathic normal pressure hydrocephalus : Aspects on intracranial pressure measurments and CSF volume alteration

   Författare :Niklas Lenfeldt; Jan Malm; Anders Eklund; Katrine Riklund-Åhlström; John D. Pickard; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Idiopathic normal pressure hydrocephalus; intracranial pressure; subcortical ischemia; neuronal integrity; cortical activation.; infusion test; cerebrospinal fluid dynamics; outflow resistance; compliance; elastance; proton spectroscopy; functional MRI; external lumbar drainage; Neurology; Neurologi;

   Sammanfattning : BACKGROUND: Idiopathic normal pressure hydrocephalus (INPH) is still a syndrome generating more questions than answers. Today, research focuses mainly on two areas: understanding the pathophysiology – especially how the malfunctioning CSF system affects the brain parenchyma – and finding better methods to select patients benefiting from a shunt operation. LÄS MER

5. 9. Stochastic modeling of motor proteins

   Författare :Martin Lindén; Mats Wallin; Dean Astumian; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular motor; motor protein; Markov process; fluctuations; statistical mechanics; microscopic reversibility; Physics; Fysik;

   Sammanfattning : Motor proteins are microscopic biological machines that convert chemical energy into mechanical motion and work. They power a diverse range of biological processes, for example the swimming and crawling motion of bacteria, intracellular transport, and muscle contraction. LÄS MER

7. 10. Primary Hyperparathyroidism : A Study of Cardiovascular Dysfunction and its Reversibility After Parathyroidectomy

   Författare :Inga-Lena Nilsson; Lars-Ove Farnebo; Uppsala universitet; []
   Nyckelord :Medical sciences; primary hyperparathyroidism; vascular endothelium; heart; heart rate variability; blood pressure; parathyroidectomy; calcium; parathyroid hormone; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Surgery; kirurgi;

   Sammanfattning : Cardiovascular risk in primary hyperparathyroidism (HPT) is controversial, and studies mainly from Europe associate HPT with increased cardiovascular morbidity and mortality. Cardiovascular morphology and function were evaluated prospectively in 31 consecutive HPT patients (mean serum calcium 2.97±0. LÄS MER