Sökning: "rickettsia"

Visar resultat 1 - 5 av 15 avhandlingar innehållade ordet rickettsia.

  1. 1. Studies of Spotted Fever Rickettsia - Distribution, Detection, Diagnosis and Clinical Context : With a Focus on Vectors and Patients in Sweden

    Författare :Katarina Wallménius; Kenneth Nilsson; Thomas Jaenson; Björn Olsen; Fredrik Elgh; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; tick-borne infections; co-infections; ticks; Ixodes ricinus; zoonosis; Rickettsia helvetica; migrating birds; Bell’s pares; erythema migrans; Rickettsia aeschlimannii; sudden deafness; facial nerve paralysis; Hyalomma marginatum; Rickettsia africae; western blot; PCR; serology; Clinical Bacteriology; Klinisk bakteriologi;

    Sammanfattning : The spotted fever rickettsia, Rickettsia helvetica, is an endemic tick-borne bacteria in Sweden. It causes infections in humans, manifested as aneruptive fever, headache, arthralgia and myalgia, and sometimes an inoculation eschar or a rash. There have also been two known cases of human infections with R. felis in Sweden. LÄS MER

  2. 2. Rickettsia helvetica; Detection in arthropods and human tissues and its relation to clinical disease

    Författare :Kenneth Nilsson; Björn Olsen; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Communicable diseases; rickettsia; spotted fever; tick; PCR; myocarditis; sarcoidois; Infektionssjukdomar; Infectious diseases; Infektionssjukdomar; Infektionssjukdomar; Infectious Diseases;

    Sammanfattning : A relation between R. helvetica and perimyocarditis was, in two young men who died of sudden cardiac death during exercise in 1997, suggested by a seminested PCR, for three different genes, sequencing of the amplified products, documentation of a seroresponse and histopathologic changes in accordance with rickettsioses. LÄS MER

  3. 3. Causes of Substitution Frequency Variation in Pathogenic Bacteria

    Författare :Wagied Davids; Siv Andersson; Otto Berg; Bengt Persson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Biology; Comparative genomics; Molecular evolution; Bioinformatics; Human pathogens; Rickettsia; Helicobacter pylori; Biologi; Biology; Biologi;

    Sammanfattning : Estimating substitution frequencies at sites that influence (Ka) and do not influence (Ks) the amino acid sequence is important for understanding the dynamics of molecular sequence evolution and the selective pressures that have shaped genetic variation. The aim of this work was to gain a deeper understanding of the driving forces of substitution frequency variation in human pathogens. LÄS MER

  4. 4. Spotted Fever Rickettsioses in Sweden : Aspects of Epidemiology, Clinical Manifestations and Co-infections

    Författare :Anders Lindblom; Kenneth Nilsson; Björn Olsen; Björn Herrmann; Clas Ahlm; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rickettsia helvetica; Rickettsia felis; co-infection; erythema migrans; meningitis; serology; PCR; western blot; Infektionssjukdomar; Infectious Diseases;

    Sammanfattning : The spotted fever group rickettsiae are emerging diseases. They cause damage in their hosts by invading the endothelium in small to medium-sized blood vessels, which results in vasculitis that can cause clinical manifestations from most organs. LÄS MER

  5. 5. Mapping the Rickettsia prowazekii genome

    Författare :Alireza Zomorodipour; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Rickettsia prowazekii is a member of alpha proteobacteria and the etiologic agent of epidemictyphus. Besides its pathogenicity as an obligate intracellular parasite it has been considered as amodel organism in a variety of studies.We have established a collection of overlapping clones, covering nearly the complete R.prowazekii genome. LÄS MER