Ólöf Guðrún Sigurðardóttir

Education
1985 Cand Med Vet, Norwegian College of Veterinary Medicine, Oslo, Norway

1986-1989 Resident in veterinary pathology, University of Liverpool, England

1989-1991 Resident in veterinary pathology, School of Veterinary Medicine, University of California, Davis, USA

2005  Dr med vet, Norwegian College of Veterinary Medicine, Oslo, Norway

Work
1986  Veterinarian, Institute for Experimental Pathology, Keldur, University of Iceland

1991-1992  Amanuensis, Department of pathology, Norwegian college of Veterinary Medicine, Oslo, Norway

1992-1998 Researcher, Department of pathology, National Veterinary Institute, Oslo, Norway

1998-1999      Veterinary pathologist, Institute for Experimental Pathology, Keldur, University of Iceland

1999-2004   Researcher, Department of pathology, National Veterinary Institute, Oslo, Norway

2004-2006   Manager, Laboratory Animal Science Unit, Lyfjaþróun Biopharmaceuticals, Reykjavík, Iceland

2006-  Veterinary pathologist, Institute for Experimental Pathology, Keldur, University of Iceland

My research field is wide as I am working with many different animal species and a variety of diseases, mainly in connection with diagnostic pathology. My thesis was about paratuberculosis in goats, a study on the uptake of Mycobacterium avium subsp. paratuberculosis and the pathology of early subclinical infection.

Ongoing projects include:

• Evaluating the effect of fluoride exposure on the teeth and jawbones of sheep on farms in the vicinity of aluminium smelter plants
• Studying the pathology of the ptarmigan, as a part of a large project on Ptarmigan health in the field
• The pathology of lung diseases in sheep, focusing on the two main diseases mycoplasmosis and pasteurellosis
• Immunohistochemistry, as a tool in the diagnoses of infectious agents and specific cell types or other markers. Also testing out new antibodies
• Evaluating the effect of volcano eruption on animal health, focusing on the lungs of sheep as indicator for possible adverse effects of ash on humans

Research collaborators

Icelandic food and veterinary authority (MAST)

Ólafur K. Nielsen, ecologist, Icelandic Institute of Natural history

ArcticLas, Contract and research organization, Reykjavík, Iceland

Guðrún Pétursdóttir, Director of Institute for Sustainability Studies

PubMed

1. Granulomatous enteritis in a pig caused by Mycobacterium avium. Sigurðardóttir, ÓG; Nordstoga, K; Baustad, B; Saxegaard, F. Vet Pathol 31: 274-276 (1994)
    
2. Grass sickness hos hest (equine dysautonomi). Kasuistikk og litteraturgjennomgang. Baustad, B; Kolbjørnsen, Ø; Sigurðardóttir, ÓG; Bakken, TK. Norsk Veterinærtidsskrift 106: 97-105 (1994)
    
3. "Clostridium piliforme (Tyzzer´s disease) infeksjon hos et føll; kasuistikk og litteraturgjennomgang."  Sigurðardóttir, ÓG. Norsk Veterinærtidsskrift 110: 13-18 (1998)
              
4. “Paratuberkulose hos storfe” Djønne, B; Halldórsdóttir, S; Holstad, G; Sigurðardóttir, ÓG; Ødegaard, Ø. Norsk Veterinærtidsskrift 110: 713-717 (1998)
    
5. “Bacterial isolation, immunological response, and histopathological lesions during the early subclinical phase of experimental infection of goat kids with Mycobacterium avium subsp paratuberculosis.” Sigurðardóttir ÓG, Press CM, Saxegaard F, Evensen Ø. Vet Pathol 36: 542-550 (1999)
    
6. “Uptake of Mycobacterium avium subsp. paratuberculosis through the distal small intestinal mucosa in goats: an ultrastructural study.” Sigurðardóttir ÓG, Press CM, Saxegaard F, Evensen Ø.  Vet Pathol 38: 184-189 (2001)
    
7. “Orchitis in a cat associated with coronavirus infection.” J Comp Pathol 124: 219-222 (2001) Sigurðardóttir ÓG, Kolbørnsen Ø, Lutz H.
    
8. “Paratuberculosis with special reference to cattle: A review.” Olsen I, Sigurðardóttir ÓG, Djønne B. Vet Quarterly 24 (1): 13-28 (2002)
    
9. The national Paratuberculosis Program in Norway. Tharaldsen J, Djønne B, Fredriksen B, Nyberg O, Sigurðardóttir Ó          Acta Vet Scand 44 (3-4): 243-246 (2003)
    
10. Mycobacterium avium subspecies paratuberculosis – A review of present research in Norway. Holstad G, Sigurðardóttir Ó, Valheim M, Storset A, Olsen L Halldorsdottir S, Djønne B, Fredriksen B.  Acta Vet Scand 44 (3-4): 269-272 (2003)
     
11. Establishment of Mycobacterium avium subsp. paratuberculosis infection in the intestine of ruminants. Sigurðardóttir ÓG, Valheim M, Press CMcL. Adv Drug Del Rev 56 (6): 819-834 (2004)
     
12. Factors affecting the herd level of antibodies against Mycobacterium avium subspecies paratuberculosis in dairy cattle. Fredriksen B, Djønne B, Sigurðardóttir Ó, Tharaldsen J, Nyberg O, Jarp J. Vet Rec 154: 522-526 (2004)
     
13. Characterization of Macrophages and Occurrence of T cells in Intestinal Lesions of subclinical paratuberculosis in Goats. Valheim M, Sigurðardóttir ÓG, Storset AK; Aune LG, Press CMcL. J Comp Path 131: 221-232 (2004)
     
14. Acute toxoplasmosis in three wild arctic foxes (Alopex lagopus) from Svalbard; one with co-infections of Salmonella Enteritidis PT1 and Yersinia pseudotuberculosis serotype 2b. Sørensen KK, Mørk T, Sigurðardóttir ÓG, Åsbakk K, Åkerstedt J, Bergsjø B, Fuglei E. Research in Veterinary Science 78: 161-167 (2005)
     
15. Mycobacterium avium subsp. paratuberculosis enters the small intestinal mucosa of goat kids in areas with and without Peyer’s patches as demonstrated with the everted sleeve method. Sigurðardóttir ÓG, Bakke-McKellep AM, Djønne B, Øystein E. Comp Immunol Microbiol Infect Dis 28: 223-230 (2005)
     
16. Description of the infection status in a Norwegian cattle herd naturally infected by Mycobacterium avium subsp. paratuberculosis. Holstad G, Sigurðardóttir ÓG, Storset AK, Tharaldsen J; Nyberg O, Schönheit J, Djønne B. Acta Vet Scand 46: 45-56 (2005)
     
17. PMWS in pigs in Iceland. Sigurdardottir OG, Gunnarsson E, Konradsson K Vet Rec 166(7): 216 (2010); Letter
     
18. Skin-infiltrating T cells and cytokine expression in Icelandic horses affected with insect bite hypersensitivity: a possible role for regulatory T cells. Heimann M, Janda J, Sigurdardottir OG, Svansson V, Klukowska J, von Tschamer C, Doherr M, Broström H, Andresson LS, Einarsson S, Marti E, Torsteinsottir S. Vet Immunol Immunopathol 140: 63-74 (2011)
     
19. Fatal infection in two Icelandic stallions caused by Halicephalobus gingivalis (Nematoda: Rhabditida). Eydal  M, Bambir SH, Sigurdarson S, Gunnarsson E, Svansson V, Fridriksson S, Benediktsson ET, Sigurdardottir O. Vet Parasitol 186: 523-527 (2012)