Blar i Bergen Open Research Archive på forfatter "Nygård, Ottar"
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Plasma concentrations and dietary intakes of choline and betaine in association with atrial fibrillation risk: Results from 3 prospective cohorts with different health profiles
Zuo, Hui; Svingen, Gard Frodahl Tveitevåg; Tell, Grethe S.; Ueland, Per Magne; Vollset, Stein Emil; Pedersen, Eva Ringdal; Ulvik, Arve; Meyer, Klaus; Nordrehaug, Jan Erik; Nilsen, Dennis W.T.; Bønaa, Kaare; Nygård, Ottar (Peer reviewed; Journal article, 2018)Background: Although choline metabolism has been associated with atherosclerotic heart disease, less research attention has been paid to the associations of choline and its oxidative metabolite betaine with cardiac ... -
Plasma cystathionine and risk of incident stroke in patients with suspected stable angina pectoris
Dhar, Indu; Svingen, Gard Frodahl Tveitevåg; Ueland, Per Magne; Lysne, Vegard; Svenningsson, Mads Malm; Tell, Grethe S.; Nygård, Ottar (Peer reviewed; Journal article, 2018)Background: Cystathionine is an intermediate product in the transsulfuration pathway and formed during the B6‐dependent conversion of methionine to cysteine. Elevated plasma cystathionine has been related to atherosclerosis, ... -
Plasma Glycine and Risk of Acute Myocardial Infarction in Patients With Suspected Stable Angina Pectoris
Ding, Yunpeng; Svingen, Gard Frodahl Tveitevåg; Pedersen, Eva Ringdal; Gregory, Jesse F.; Ueland, Per Magne; Tell, Grethe Seppola; Nygård, Ottar (Peer reviewed; Journal article, 2015)Background Glycine is an amino acid involved in antioxidative reactions, purine synthesis, and collagen formation. Several studies demonstrate inverse associations of glycine with obesity, hypertension, and diabetes mellitus. ... -
Plasma methionine, choline, betaine, and dimethylglycine in relation to colorectal cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC)
Nitter, Mathilde Hjelle; Norgård, Benedicte Wentzel; De Vogel, Stefan; Eussen, Simone; Meyer, Klaus; Ulvik, Arve; Ueland, Per Magne; Nygård, Ottar; Vollset, Stein Emil; Bjørge, Tone; Tjønneland, Anne; Hansen, Louise; Boutron-Ruault, Marie-Christine; Racine, Antoine; Cottet, Vanessa; Kaaks, Rudolf; Kühn, Tilman; Trichopoulou, Antonia; Bamia, Christina; Naska, Androniki; Grioni, Sara; Palli, Domenico; Panico, Salvatore; Tumino, Rosario; Vineis, Paolo; Bueno-de-Mesquita, H. Bas; Van Kranen, Henk J.; Peeters, Petra H. M.; Weiderpass, Elisabete; Dorronsoro, Miren; Jakszyn, Paula; Sánchez, María-José; Argüelles, Marcial Vicente; Huerta, José-Maria; Barricarte, Aurelio; Johansson, Matthias; Ljuslinder, Ingrid; Khaw, Kay Tee; Wareham, Nicholas J.; Freisling, Heinz; Duarte-Salles, Talita; Stepien, Magdalena; Gunter, Mark J.; Riboli, Élio B. (Peer reviewed; Journal article, 2014-08)Background Disturbances in one carbon metabolism may contribute to carcinogenesis by affecting methylation and synthesis of DNA. Choline and its oxidation product betaine are involved in this metabolism and can serve as ... -
Prognostic Impact of In-Hospital and Postdischarge Heart Failure in Patients With Acute Myocardial Infarction: A Nationwide Analysis Using Data From the Cardiovascular Disease in Norway (CVDNOR) Project
Sulo, Gerhard; Igland, Jannicke; Nygård, Ottar; Vollset, Stein Emil; Ebbing, Marta; Poulter, Neil; Egeland, G.M.; Cerqueira, Charlotte; Jørgensen, Torben; Tell, Grethe S. (Peer reviewed; Journal article, 2017-03)Background: Heart failure (HF) is a serious complication of acute myocardial infarction (AMI). We explored the excess mortality associated with HF as an early or late complication of AMI and describe changes over time in ... -
A proposed method to investigate reliability throughout a questionnaire
Wentzel-Larsen, Tore; Norekvål, Tone M.; Ulvik, Bjørg; Nygård, Ottar; Pripp, Are Hugo (Peer reviewed; Journal article, 2011-10-05)Background: Questionnaires are used extensively in medical and health care research and depend on validity and reliability. However, participants may differ in interest and awareness throughout long questionnaires, which ... -
A protein extract from chicken reduces plasma homocysteine in rats
Lysne, Vegard; Bjørndal, Bodil; Vik, Rita; Nordrehaug, Jan Erik; Skorve, Jon; Nygård, Ottar; Berge, Rolf Kristian (Peer reviewed; Journal article, 2015-06-04)The present study aimed to evaluate effects of a water-soluble protein fraction of chicken (CP), with a low methionine/glycine ratio, on plasma homocysteine and metabolites related to homocysteine metabolism. Male Wistar ... -
Refined phenotyping identifies links between preeclampsia and related diseases in a Norwegian preeclampsia family cohort
Thomsen, Liv Cecilie Vestrheim; Melton, Philip E.; Tollaksen, Kjersti; Lyslo, Ingvill; Roten, Linda Tømmerdal; Odland, Maria Lisa; Strand, Kristin Melheim; Nygård, Ottar; Sun, Chen; Iversen, Ann-Charlotte; Austgulen, Rigmor; Moses, Eric; Bjørge, Line (Peer reviewed; Journal article, 2015-11)Objective: Preeclampsia is a complex genetic disease of pregnancy with a heterogenous presentation, unknown cause and potential severe outcomes for both mother and child. Preeclamptic women have increased risk for ... -
The risk association of plasma total homocysteine with acute myocardial infarction is modified by serum vitamin A
Olsen, Thomas; Vinknes, Kathrine; Svingen, Gard Frodahl Tveitevåg; Pedersen, Eva Ringdal; Dhar, Indu; Tell, Grethe S.; Blomhoff, Rune; Ueland, Per Magne; Midttun, Øivind; Refsum, Helga; Nygård, Ottar (Peer reviewed; Journal article, 2018)Background. Plasma total homocysteine (tHcy) has been implicated in the development of cardiovascular disease, but the mechanisms remain unclear. Vitamin A (Vit-A) is involved in homocysteine metabolism and we therefore ... -
The Role of Long-Chained Marine N-3 Polyunsaturated Fatty Acids in Cardiovascular Disease
Aarsetøy, Hildegunn; Grundt, Heidi; Nygård, Ottar; Nilsen, Dennis W.T. (Peer reviewed; Journal article, 2012)This paper reviews the current evidence regarding long-chained marine omega-3 polyunsaturated fatty acids (PUFAs) and cardiovascular disease (CVD), their possible mechanisms of action, and results of clinical trials. Also, ... -
Role of the Neutral Amino Acid Transporter SLC7A10 in Adipocyte Lipid Storage, Obesity and Insulin Resistance
Jersin, Regine Åsen; Tallapragada, Divya Sri Priyanka; Madsen, André; Skartveit, Linn; Fjære, Even; McCann, Adrian; Dyer, Laurence; Willems, Aron; Bjune, Jan-Inge; Bjune, Mona Synnøve; Våge, Villy; Nielsen, Hans Jørgen; Thorsen, Håvard Luong; Nedrebø, Bjørn Gunnar; Busch, Christian; Steen, Vidar M.; Blüher, Matthias; Jacobson, Peter; Svensson, Per-Arne; Fernø, Johan; Rydén, Mikael; Arner, Peter; Nygård, Ottar; Claussnitzer, Melina; Ellingsen, Ståle; Madsen, Lise; Sagen, Jørn V.; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2021)Elucidation of mechanisms that govern lipid storage, oxidative stress, and insulin resistance may lead to improved therapeutic options for type 2 diabetes and other obesity-related diseases. Here, we find that adipose ... -
Serum Acylcarnitines and Risk of Cardiovascular Death and Acute Myocardial Infarction in Patients With Stable Angina Pectoris
Strand, Elin; Pedersen, Eva Ringdal; Svingen, Gard Frodahl Tveitevåg; Olsen, Thomas; Bjørndal, Bodil; Karlsson, Therese; Dierkes, Jutta; Njølstad, Pål Rasmus; Mellgren, Gunnar; Tell, Grethe S.; Berge, Rolf Kristian; Svardal, Asbjørn M.; Nygård, Ottar (Peer reviewed; Journal article, 2017-02)Background: Excess levels of serum acylcarnitines, which are intermediate products in metabolism, have been observed in metabolic diseases such as type 2 diabetes mellitus. However, it is not known whether acylcarnitines ... -
Short-term activation of peroxisome proliferator-activated receptors α and γ induces tissue-specific effects on lipid metabolism and fatty acid composition in male Wistar rats
Strand, Elin; Lysne, Vegard; Grinna, Mari Lausund; Bohov, Pavol; Svardal, Asbjørn M.; Nygård, Ottar; Berge, Rolf Kristian; Bjørndal, Bodil (Peer reviewed; Journal article, 2019-06-12)Dietary fatty acids (FAs) affect certain metabolic routes, including pathways controlled by the peroxisome proliferator-activated receptors (PPARs), but tissue-specific effects are not well-defined. Thus, the aim was to ... -
Short-term treatment with a peroxisome proliferator-activated receptor α agonist influences plasma one-carbon metabolites and B-vitamin status in rats
Lysne, Vegard; Bjørndal, Bodil; Grinna, Mari Lausund; Midttun, Øivind; Ueland, Per Magne; Berge, Rolf Kristian; Dierkes, Jutta; Nygård, Ottar; Strand, Elin (Peer reviewed; Journal article, 2019-12-05)Introduction: Peroxisome proliferator-activated receptors (PPARs) have been suggested to be involved in the regulation of one-carbon metabolism. Previously we have reported effects on plasma concentrations of metabolites ... -
Smoking and body fat mass in relation to bone mineral density and hip fracture: The Hordaland Health Study
Øyen, Jannike; Gjesdal, Clara Gram; Nygård, Ottar; Lie, Stein Atle; Meyer, Haakon; Apalset, Ellen M.; Ueland, Per Magne; Pedersen, Eva Kristine Ringdal; Midttun, Øivind; Vollset, Stein Emil; Tell, Grethe Seppola (Peer reviewed; Journal article, 2014-03-25)Lower bone mineral density (BMD) in smokers may be attributable to lower body weight or fat mass, rather than to a direct effect of smoking. We analyzed the effects of smoking exposure, assessed by plasma cotinine, and ... -
Smoking, plasma cotinine and risk of atrial fibrillation: the Hordaland Health Study
Zuo, Hui; Nygård, Ottar; Vollset, Stein Emil; Ueland, Per Magne; Ulvik, Arve; Midttun, Øivind; Meyer, Klaus; Igland, Jannicke; Sulo, Gerhard; Tell, Grethe S. (Peer reviewed; Journal article, 2018-01)Background: Cigarette smoking has been identified as a major modifiable risk factor for coronary heart disease and mortality. However, findings on the relationship between smoking and atrial fibrillation (AF) have been ... -
Systemic Cardiac Troponin T Associated With Incident Atrial Fibrillation Among Patients With Suspected Stable Angina Pectoris
Vavik, Vegard; Pedersen, Eva Ringdal; Svingen, Gard Frodahl Tveitevåg; Solheim, Eivind; Aakre, Kristin Moberg; Tell, Grethe S.; Nygård, Ottar; Vikenes, Kjell (Journal article; Peer reviewed, 2020)Higher concentrations of cardiac troponin T are associated with coronary artery disease (CAD) and adverse cardiovascular prognosis. The relation with incident atrial fibrillation (AF) is less explored. We studied this ... -
Tetradecylthiopropionic acid induces hepatic mitochondrial dysfunction and steatosis, accompanied by increased plasma homocysteine in mice
Berge, Rolf Kristian; Bjørndal, Bodil; Strand, Elin; Bohov, Pavol; Lindquist, Carine; Nordrehaug, Jan Erik; Svardal, Asbjørn; Skorve, Jon; Nygård, Ottar (Peer reviewed; Journal article, 2016-02-05)Background: Hepatic mitochondrial dysfunction plays an important role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). Methyl donor supplementation has been shown to alleviate NAFLD, connecting the condition ... -
Time trends and educational inequalities in out-of-hospital coronary deaths in Norway 1995-2009: A Cardiovascular Disease in Norway (CVDNOR) project
Sulo, Enxhela; Nygård, Ottar; Vollset, Stein Emil; Igland, Jannicke; Ebbing, Marta; Østbye, Truls; Jørgensen, Torben; Sulo, Gerhard; Tell, Grethe S. (Peer reviewed; Journal article, 2017-02)Background: Recent time trends and educational gradients characterizing out‐of‐hospital coronary deaths (OHCD) are poorly described. Methods and Results: We identified all deaths from coronary heart disease occurring outside ... -
Transsulfuration metabolites and the association with incident atrial fibrillation – An observational cohort study among Norwegian patients with stable angina pectoris
Svenningsson, Mads Malm; Svingen, Gard Frodahl Tveitevåg; Lysne, Vegard; Ueland, Per Magne; Tell, Grethe S.; Pedersen, Eva Ringdal; Dhar, Indu; Nilsen, Dennis W.T.; Nygård, Ottar (Journal article; Peer reviewed, 2020)Background/aim Plasma total homocysteine (tHcy) is elevated in patients with persistent vs. paroxysmal atrial fibrillation (AF), and has been related to increased risk of new-onset AF. Homocysteine is degraded to cystathionine ...