Blar i forfatter Artikler, rapporter og annet (klinisk medisin) "Ytrehus, Kirsti"

Viser treff 1-9 av 9

    • The acute phase of experimental cardiogenic shock is counteracted by microcirculatory and mitochondrial adaptations 

      Stenberg, Thor Allan; Kildal, Anders Benjamin; Sanden, Espen; How, Ole-Jakob; Hagve, Martin; Ytrehus, Kirsti; Larsen, Terje; Myrmel, Truls (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Coronary flow reserve in pregnant rats with increased left ventricular afterload 

      Songstad, Nils Thomas; Serrano, Maria; Sitras, Vasilis; Johansen, David; Ytrehus, Kirsti; Acharya, Ganesh (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-07-09)
      Background Coronary flow reserve (CFR) is used as a measure of coronary endothelial function. We investigated the effect of increased afterload on CFR of pregnant and non-pregnant rats. Methods Afterload increase in Wister rats (both pregnant and non-pregnant) was achieved by the infusion of angiotensin II (Ang II) for ~10 days or by subjecting them to transverse aortic constriction (TAC) ...

    • Crystallized but not soluble uric acid elicits pro-inflammatory response in short-term whole blood cultures from healthy men 

      Brovold, Henrik; Lund, Trine; Svistounov, Dmitri; Solbu, Marit Dahl; Jenssen, Trond Geir; Ytrehus, Kirsti; Zykova, Svetlana (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-19)
      Several epidemiological studies have pointed at serum uric acid (SUA) as an independent risk factor for mortality, diabetes, hypertension, cardiovascular and kidney disease; however, no clear pathogenic pathway is established. Uric acid (UA) crystals show pro-inflammatory properties and can thus create or contribute to the state of chronic low-grade inflammation, a widely accepted pathogenic mechanism ...

    • Effect of Transverse Aortic Constriction on Cardiac Structure, Function and Gene Expression in Pregnant Rats 

      Songstad, Nils Thomas; Johansen, David; How, Ole-Jakob; Kaaresen, Per Ivar; Ytrehus, Kirsti; Acharya, Ganesh (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Background: There is an increased risk of heart failure and pulmonary edema in pregnancies complicated by hypertensive disorders. However, in a previous study we found that pregnancy protects against fibrosis and preserves angiogenesis in a rat model of angiotensin II induced cardiac hypertrophy. In this study we test the hypothesis that pregnancy protects against negative effects of increased ...

    • Effects of high intensity interval training on pregnant rats, and the placenta, heart and liver of their fetuses. 

      Songstad, Nils Thomas; Kaspersen, Knut-Helge; Hafstad, Anne Dragøy; Basnet, Purusotam; Ytrehus, Kirsti; Acharya, Ganesh (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-13)
      Objective To investigate the effects of high intensity interval training (HIIT) on the maternal heart, fetuses and placentas of pregnant rats. <p>Methods Female Sprague-Dawley rats were randomly assigned to HIIT or sedentary control groups. The HIIT group was trained for 6 weeks with 10 bouts of high intensity uphill running on a treadmill for four minutes (at 85–90% of maximal oxygen consumption) ...

    • Recombinant human activated protein C attenuates endotoxin-induced lung injury in awake sheep 

      Langbakk, Bodil; Wærhaug, Kristine; Kuklin, Vladimir N.; Kirov, Mikhail Y.; Sovershaev, Mikhail; Ingebretsen, Ole C.; Ytrehus, Kirsti; Bjertnæs, Lars J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-15)
      Introduction: Acute lung injury often complicates severe sepsis. In Gram-negative sepsis, bacterial endotoxin activates both coagulation and inflammation. Enhanced lung vascular pressures and permeability, increased extravascular lung water content and deteriorated gas exchange characterize ovine endotoxin-induced lung injury, a frequently used model of acute lung injury. Recombinant human ...

    • Tezosentan reduces the microvascular filtration coefficient in isolated lungs from rats subjected to cecum ligation and puncture 

      Kuklin, Vladimir N.; Sovershaev, Mikhail; Andreasen, Thomas; Skogen, Vegard; Ytrehus, Kirsti; Bjertnæs, Lars J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2005-10-18)
      Introduction: We recently demonstrated that the non-selective endothelin-1 (ET-1) receptor blocker tezosentan antagonizes ovine acute lung injury (ALI) following infusion of endotoxin or ET-1 by reducing the enhanced lung microvascular pressure, although we could not exclude the possibility of a simultaneous decline in microvascular permeability. In the present study, our aim was to find out if ...

    • Tezosentan-induced attenuation of lung injury in endotoxemic sheep is associated with reduced activation of protein kinase C 

      Ingebretsen, Ole C.; Kuklin, Vladimir N.; Kirov, Mikhail Y.; Sovershaev, Mikhail; Andreasen, Thomas; Ytrehus, Kirsti; Bjertnæs, Lars J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2005-03-04)
      Introduction: Studies in vitro reveal that endothelin-1 (ET-1) activates the α isoform of protein kinase C (PKC-α) in cultures of endothelial cells, thereby deranging cellular integrity. Sepsis and endotoxemia are associated with increased plasma concentrations of ET-1 that induce acute lung injury (ALI). We recently reported that non-selective ET-1 receptor blockade attenuates ALI in sheep by ...

    • Uric acid predicts mortality and ischaemic stroke in subjects with diastolic dysfunction: the Tromsø Study 1994-2013 

      Norvik, Jon Viljar; Schirmer, Henrik; Ytrehus, Kirsti; Storhaug, Hilde-Merete; Jenssen, Trond Geir; Eriksen, Bjørn Odvar; Mathiesen, Ellisiv B.; Løchen, Maja-Lisa; Wilsgaard, Tom; Solbu, Marit Dahl (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-31)
      Aims: To investigate whether serum uric acid predicts adverse outcomes in persons with indices of diastolic dysfunction in a general population. <br>Methods and results: We performed a prospective cohort study among 1460 women and 1480 men from 1994 to 2013. End- points were all-cause mortality, incident myocardial infarction, and incident ischaemic stroke. We strati fi ed the analyses ...