• The Association Between Adiponectin, Serum Uric Acid and Urinary Markers of Renal Damage in the General Population: Cross-Sectional Data from the Tromsø Study 

      Solbu, Marit Dahl; Norvik, Jon Viljar; Storhaug, Hilde-Merete; Eriksen, Bjørn Odvar; Melsom, Toralf; Eggen, Anne Elise; Zykova, Svetlana; Kronborg, Jens; Jenssen, Trond Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-14)
      Background/Aims: Uric acid may cause renal damage, whereas adiponectin in some studies has been reported to have renoprotective properties. The renoprotective role of adiponectin under the influence of hyperuricemia has not been explored. We assessed the cross-sectional association between adiponectin, serum uric acid (SUA) and urinary biomarkers of glomerular and tubular damage (albumin-creatinine ...
    • Association of High-Density Lipoprotein Cholesterol With GFR Decline in a General Nondiabetic Population 

      Melsom, Toralf; Norvik, Jon Viljar; Enoksen, Inger Therese; Stefansson, Vidar Tor Nyborg; Rismo, Renathe; Jenssen, Trond; Solbu, Marit Dahl; Eriksen, Bjørn Odvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)
      <i>Introduction</i> - Although lower high-density lipoprotein cholesterol (HDL-C) levels are considered a risk factor for cardiovascular disease (CVD), experimental evidence suggest that aging, inflammation, and oxidative stress may remodel HDL-C, leading to dysfunctional HDL-C. Population studies on HDL-C and loss of the glomerular filtration rate (GFR) reported inconsistent results, but they used ...
    • Associations of urinary orosomucoid, N-acetyl-β-D-glucosaminidase, and albumin with blood pressure and hypertension during 7 years of follow-up. The Tromsø Study 

      Brobak, Karl Marius; Andreassen, Runa Marie; Melsom, Toralf; Høieggen, Aud; Norvik, Jon Viljar; Solbu, Marit Dahl (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-03)
      Purpose: Subclinical chronic kidney disease is known to exacerbate hypertension and progression of kidney damage. In order to initiate timely interventions, early biomarkers for this vicious circle are needed. Our aim was to describe the cross-sectional associations of urinary orosomucoid and urinary N-acetyl-b-D-glucosaminidase (NAG) with blood pressure and the longitudinal associations of urinary ...
    • Blood pressure and age-related GFR decline in the general population 

      Eriksen, Bjørn Odvar; Stefansson, Vidar Tor Nyborg; Jenssen, Trond Geir; Mathisen, Ulla Dorte; Schei, Jørgen; Solbu, Marit Dahl; Wilsgaard, Tom; Melsom, Toralf (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-28)
      Background: <br> Hypertension is one of the most important causes of end-stage renal disease, but it is unclear whether elevated blood pressure (BP) also accelerates the gradual decline in the glomerular filtration rate (GFR) seen in the general population with increasing age. The reason may be that most studies have considered only baseline BP and not the effects of changes in BP, antihypertensive ...
    • Comparing prevalence of chronic kidney disease and its risk factors between population-based surveys in Russia and Norway 

      Cook, Sarah; Solbu, Marit Dahl; Eggen, Anne Elise; Iakunchykova, Olena; Averina, Maria; Hopstock, Laila Arnesdatter; Kholmatova, Kamila Kahramonzhonovna; Kudryavtsev, Alexander V; Leon, David A.; Malyutina, Sofia; Ryabikov, Andrew; Williamson, Elizabeth; Nitsch, Dorothea (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-14)
      Background - Little data exists on the prevalence of chronic kidney disease (CKD) in the Russian population. We aimed to estimate the prevalence of CKD in a population-based study in Russia, compare with a similar study in Norway, and investigate whether differences in risk factors explained between-study differences in CKD.<p> <p>Methods - We compared age- and sex-standardised prevalence of ...
    • Correlation between baseline GFR and subsequent change in GFR in Norwegian adults without diabetes and in Pima Indians 

      Melsom, Toralf; Nair, Viji; Schei, Jørgen; Mariani, Laura; Stefansson, Vidar Tor Nyborg; Harder, Jennifer L.; Jenssen, Trond Geir; Solbu, Marit Dahl; Norvik, Jon Viljar; Looker, Helen; Knowler, William C.; Kretzler, Matthias; Nelson, Robert G.; Eriksen, Bjørn Odvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-28)
      <p><i>Rationale & Objective - </i>An elevated glomerular filtration rate (GFR), or renal hyperfiltration, may predispose individuals to subsequent rapid GFR decline in diabetes, obesity, and metabolic syndrome. Although this hypothesis is supported by results of experimental studies, the importance of hyperfiltration at the population level remains controversial. We investigated whether higher ...
    • 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 ...
    • Detection of Nonadherence to Antihypertensive Treatment by Measurements of Serum Drug Concentrations 

      Bergland, Ola Undrum; Halvorsen, Lene Vernås; Søraas, Camilla Lund; Hjørnholm, Ulla; Kjær, Vibeke Norheim; Rognstad, Stine; Brobak, Karl Marius; Aune, Arleen; Olsen, Eirik; Fauchald, Ylva; Heimark, Sondre; Thorstensen, Christian W; Liestøl, Knut; Solbu, Marit Dahl; Gerdts, Eva; Mo, Rune; Rostrup, Morten; Kjeldsen, Sverre; Høieggen, Aud; Opdal, Mimi Stokke; Fadl Elmula, Fadl Elmula M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-19)
      Nonadherence to drugs is a challenge in hypertension treatment. We aimed to assess the prevalence of nonadherence by serum drug concentrations compared with 2 indirect methods and relate to the prescribed drug regimens in a nationwide multicenter study. Five hundred fifty patients with hypertension using ≥2 antihypertensive agents participated. We measured concentrations of 23 antihypertensive drugs ...
    • Development of quantitative assay for simultaneous measurement of purine metabolites and creatinine in biobanked urine by liquid chromatography-tandem mass spectrometry 

      Svistounov, Dmitri; Solbu, Marit Dahl; Jenssen, Trond Geir; Mathisen, Ulla Dorte; Hansen, Terkel; Elgstøen, Katja Benedikte Prestø; Zykova, Svetlana (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-20)
      Purine metabolism is essential for all known living creatures, including humans in whom elevated serum concentration of purine break-down product uric acid (UA) is probably an independent risk factor for mortality, type 2 diabetes and cardiovascular events. An automated multiplex assay that measures several purine metabolites could therefore prove useful in many areas of medical, veterinary and ...
    • Elevated blood pressure is not associated with accelerated glomerular filtration rate decline in the general non-diabetic middle-aged population 

      Eriksen, Bjørn Odvar; Stefansson, Vidar Tor Nyborg; Jenssen, Trond Geir; Mathisen, Ulla Dorte; Schei, Jørgen; Solbu, Marit Dahl; Wilsgaard, Tom; Melsom, Toralf (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-14)
      Although hypertension is a risk factor for end-stage renal disease, this complication develops in only a minority of hypertensive patients. Whether non-malignant hypertension itself is sufficient to cause reduced glomerular filtration rate (GFR) is unclear. We investigated whether elevated blood pressure (BP) was associated with accelerated GFR decline in the general population. The study ...
    • Estimated and Measured GFR Associate Differently with Retinal Vasculopathy in the General Population 

      Eriksen, Bjørn Odvar; Løchen, Maja-Lisa; Arntzen, Kjell Arne; Bertelsen, Geir; Eilertsen, Britt-Ann; Hanno, Therese von; Herder, Marit; Jenssen, Trond Geir; Mathisen, Ulla Dorte; Melsom, Toralf; Njølstad, Inger; Solbu, Marit Dahl; Mathiesen, Ellisiv B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11)
      Background/Aims: Estimated GFR (eGFR) is used extensively in epidemiological research. Validations of eGFR have demonstrated acceptable performance, but the dependence of creatinine and cystatin C on non-GFR factors could confound associations with disease. Few studies have investigated this issue in direct comparison with measured GFR (mGFR). We compared the associations between eGFR and mGFR ...
    • Estimated GFR is biased by non-traditional cardiovascular risk factors 

      Melsom, Toralf; Fuskevåg, Ole-Martin; Mathisen, Ulla Dorte; Strand, Harald; Schei, Jørgen; Jenssen, Trond Geir; Solbu, Marit Dahl; Eriksen, Bjørn Odvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-23)
      Background: Estimated glomerular filtration rate (eGFR) based on either cystatin C or creatinine perform similarly in estimating measured GFR, but associate differently with cardiovascular disease (CVD) and mortality. This could be due to confounding by non-GFRrelated traits associated with cystatin C and creatinine levels. We investigated non-GFRrelated associations between eGFR and two types ...
    • Estimated Glomerular Filtration Rate (eGFR) based on cystatin C was associated with increased risk of hip and proximal humerus fractures in women and decreased risk of hip fracture in men, whereas eGFR based on creatinine was not associated with fracture risk in both sexes: The Tromsø Study 

      Nordvåg, Sofie; Solbu, Marit Dahl; Melsom, Toralf; Nissen, Frida Igland; Andreasen, Camilla; Borgen, Tove Tveitan; Eriksen, Bjørn Odvar; Joakimsen, Ragnar Martin; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-14)
      <i>Purpose</i> - Patients with end-stage kidney disease have an increased fracture risk. Whether mild to moderate reductions in kidney function is associated with increased fracture risk is uncertain. Results from previous studies may be confounded by muscle mass because of the use of creatinine-based estimates of the glomerular filtration rate (eGFRcre). We tested the hypothesis that lower eGFR ...
    • Exposure to an Extended-Interval, High-Dose Gentamicin Regimen in the Neonatal Period Is Not Associated With Long-Term Nephrotoxicity 

      Rypdal, Veronika; Jørandli, Sondre Woll; Hemmingsen, Dagny Elise; Solbu, Marit Dahl; Klingenberg, Claus (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-30)
      Objectives: To assess the association between gentamicin exposure and subclinical signs of nephrotoxicity in school children who were exposed to a high-dose gentamicin regimen in the neonatal period.<p> <p>Methods: Children receiving three or more doses (6 mg/kg) of gentamicin as neonates were invited to a follow-up in school age. We evaluated potential signs of subclinical nephrotoxicity with ...
    • Gender differences in association between uric acid and all-cause mortality in patients with chronic heart failure 

      Stubnova, Viera; Os, Ingrid; Høieggen, Aud; Solbu, Marit Dahl; Grundtvig, Morten; Westheim, Arne; Atar, Dan; Waldum-Grevbo, Bård (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-05)
      <p><i>Background - </i>Elevated serum uric acid (SUA) is associated with poor prognosis in patients with cardiovascular disease, yet it is still not decided whether the role of SUA is causal or only reflects an underlying disease. The purpose of the study was to investigate if SUA was an independent predictor of 5-year all-cause mortality in a propensity score matched cohort of chronic heart failure ...
    • GFR in healthy aging: An individual participant data meta-analysis of iohexol clearance in european population-based cohorts 

      Eriksen, Bjørn Odvar; Pálsson, Runólfur; Ebert, Natalie; Melsom, Toralf; van der Giet, Markus; Gudnason, Vilmundur; Indridasson, Olafur S.; Inker, Lesley A.; Jenssen, Trond Geir; Levey, Andrew S.; Solbu, Marit Dahl; Tighiouart, Hocine; Schaeffner, Elke (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07)
      <i>Background</i> - Population mean GFR is lower in older age, but it is unknown whether healthy aging is associated with preserved rather than lower GFR in some individuals.<br><br> <i>Methods</i> - We investigated the cross-sectional association between measured GFR, age, and health in persons aged 50–97 years in the general population through a meta-analysis of iohexol clearance measurements ...
    • Impaired Fasting Glucose Is Associated With Renal Hyperfiltration in the General Population 

      Melsom, Toralf; Mathisen, Ulla Dorte; Ingebretsen, Ole C; Jenssen, Trond Geir; Njølstad, Inger; Solbu, Marit Dahl; Toft, Ingrid; Eriksen, Bjørn Odvar (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Increased glomerular filtration rate (GFR), also called hyperfiltration, is a proposed mechanism for renal injury in diabetes. The causes of hyperfiltration in individuals without diabetes are largely unknown, including the possible role of borderline hyperglycemia. We assessed whether impaired fasting glucose (IFG; 5.6–6.9 mmol/L), elevated HbA1c, or hyperinsulinemia are associated with hyperfiltration ...
    • Including measures of chronic kidney disease to improve cardiovascular risk prediction by SCORE2 and SCORE2-OP 

      Matsushita, Kunihiro; Kaptoge, Stephen; Hageman, Steven H J; Sang, Yingying; Ballew, Shoshana H.; Grams, Morgan E.; Surapaneni, Aditya; Sun, Luanluan; Arnlov, Johan; Bozic, Milica; Brenner, Hermann; Brunskill, Nigel J.; Chang, Alex R.; Chinnadurai, Rajkumar; Cirillo, Massimo; Correa, Adolfo; Ebert, Natalie; Eckardt, Kai-Uwe; Gansevoort, Ron T.; Gutierrez, Orlando; Hadaegh, Farzad; He, Jiang; Hwang, Shih-Jen; Jafar, Tazeen H.; Jassal, Simerjot K.; Kayama, Takamasa; Kovesdy, Csaba P.; Landman, Gijs W.; Levey, Andrew S.; Lloyd-Jones, Donald M.; Major, Rupert W.; Miura, Katsuyuki; Muntner, Paul; Nadkarni, Girish N.; Nowak, Christoph; Ohkubo, Takayoshi; Pena, Michelle J.; Polkinghorne, Kevan R.; Sairenchi, Toshimi; Schaeffner, Elke; Schneider, Markus P.; Shalev, Varda; Shlipak, Michael G.; Solbu, Marit Dahl; Stempniewicz, Nikita; Tollitt, James; Valdivielso, José M; van der Leeuw, Joep; Wang, Angela Yee-Moon; Wen, Chi-Pang; Woodward, Mark; Yamagishi, Kazumasa; Yatsuya, Hiroshi; Zhang, Luxia; Dorresteijn, Jannick A N; Di Angelantonio, Emanuele; Visseren, Frank L J; Pennells, Lisa; Coresh, Josef (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-16)
      Aims - The 2021 European Society of Cardiology (ESC) guideline on cardiovascular disease (CVD) prevention categorizes moderate and severe chronic kidney disease (CKD) as high and very-high CVD risk status regardless of other factors like age and does not include estimated glomerular filtration rate (eGFR) and albuminuria in its algorithms, systemic coronary risk estimation 2 (SCORE2) and systemic ...
    • Incorporating kidney disease measures into cardiovascular risk prediction: Development and validation in 9 million adults from 72 datasets 

      Matsushita, K; Jassal, Simerjot; Solbu, Marit Dahl; Sang, Yingying; Ballew, Shoshana H.; Grams, Morgan E.; Surapaneni, Aditya; Arnlov, Johan; Bansal, Nisha; Bozic, Milica; Brenner, Hermann; Brunskill, Nigel J.; Chang, Alex R.; Chinnadurai, Rajkumar; Cirillo, Massimo; Correa, Adolfo; Ebert, Natalie; Eckardt, Kai-Uwe; Gansevoort, Ron T.; Gutierrez, Orlando; Hadaegh, Farzad; He, Jiang; Hwang, Shih-Jen; Jafar, Tazeen H.; Kayama, Takamasa; Kovesdy, Csaba P.; Landman, Gijs W.; Levey, Andrew S.; Lloyd-Jones, Donald M.; Major, Rupert W.; Miura, Katsuyuki; Muntner, Paul; Nadkarni, Girish N.; Naimark, David M.J.; Nowak, Christoph; Ohkubo, Takayoshi; Pena, Michelle J.; Polkinghorne, Kevan R.; Sabanayagam, Charumathi; Sairenchi, Toshimi; Schneider, Markus P.; Shalev, Varda; Shlipak, Michael; Stempniewicz, Nikita; Tollitt, James; Valdivielso, José M.; van der Leeuw, Joep; Wang, Angela Yee-Moon; Wen, Chi-Pang; Woodward, Mark; Yatsuya, Hiroshi; Zhang, Luxia; Schaeffner, Elke; Coresh, Josef (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-04)
      Background: Chronic kidney disease (CKD) measures (estimated glomerular filtration rate [eGFR] and albuminuria) are frequently assessed in clinical practice and improve the prediction of incident cardiovascular disease (CVD), yet most major clinical guidelines do not have a standardized approach for incorporating these measures into CVD risk prediction. “CKD Patch” is a validated method to calibrate ...
    • Low adiponectin is associated with diastolic dysfunction in women: A cross-sectional study from the Tromsø Study 

      Norvik, Jon Viljar; Schirmer, Henrik; Ytrehus, Kirsti; Jenssen, Trond Geir; Zykova, Svetlana; Eggen, Anne Elise; Eriksen, Bjørn Odvar; Solbu, Marit Dahl (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-14)
      Background: Heart failure with preserved ejection fraction is closely associated with diastolic dysfunction and related to obesity and female sex. We investigated whether adiponectin, an adipocyte-secreted protein hormone with cardioprotective effects, was associated with indices of diastolic dysfunction, and whether the association was sex dependent. <br>Methods: We conducted a cross-sectional ...