Rolf Jorde

Summary

Affiliation: University Hospital of North Norway
Country: Norway

Publications

  1. doi request reprint Supplementation with vitamin d does not increase serum testosterone levels in healthy males
    R Jorde
    Department of Clinical Medicine, Tromsø Endocrine Research Group, University of Tromsø, Norway
    Horm Metab Res 45:675-81. 2013
  2. doi request reprint Serum calcium and the calcium-sensing receptor polymorphism rs17251221 in relation to coronary heart disease, type 2 diabetes, cancer and mortality: the Tromsø Study
    Rolf Jorde
    Department of Clinical Medicine, University of Tromsø, 9038, Tromso, Norway
    Eur J Epidemiol 28:569-78. 2013
  3. pmc Plasma profile of microRNA after supplementation with high doses of vitamin D3 for 12 months
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
    BMC Res Notes 5:245. 2012
  4. pmc Polymorphisms related to the serum 25-hydroxyvitamin D level and risk of myocardial infarction, diabetes, cancer and mortality. The Tromsø Study
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, and Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
    PLoS ONE 7:e37295. 2012
  5. doi request reprint Associations between polymorphisms related to calcium metabolism and human height: the Tromsø Study
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Norway
    Ann Hum Genet 76:200-10. 2012
  6. doi request reprint Vitamin D supplementation did not prevent influenza-like illness as diagnosed retrospectively by questionnaires in subjects participating in randomized clinical trials
    Rolf Jorde
    Endocrinology Research Group, Institute of Clinical Medicine, University of Tromsø, and Medical Clinic, University Hospital of North Norway, Tromsø, Norway
    Scand J Infect Dis 44:126-32. 2012
  7. doi request reprint Tracking of serum 25-hydroxyvitamin D levels during 14 years in a population-based study and during 12 months in an intervention study
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Am J Epidemiol 171:903-8. 2010
  8. ncbi request reprint Serum parathyroid hormone as a predictor of increase in systolic blood pressure in men
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, University Hospital of North Norway, 9038 Tromsø, Norway
    J Hypertens 23:1639-44. 2005
  9. doi request reprint High serum 25-hydroxyvitamin D concentrations are associated with a favorable serum lipid profile
    R Jorde
    Tromsø Endocrine Research Group, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Clin Nutr 64:1457-64. 2010
  10. ncbi request reprint Neuropsychological function in relation to serum parathyroid hormone and serum 25-hydroxyvitamin D levels. The Tromsø study
    Rolf Jorde
    Department of Internal Medicine, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    J Neurol 253:464-70. 2006

Detail Information

Publications86

  1. doi request reprint Supplementation with vitamin d does not increase serum testosterone levels in healthy males
    R Jorde
    Department of Clinical Medicine, Tromsø Endocrine Research Group, University of Tromsø, Norway
    Horm Metab Res 45:675-81. 2013
    ..Similarly, in subjects with moderately low serum testosterone levels, substitution with testosterone does not increase serum 25(OH)D. ..
  2. doi request reprint Serum calcium and the calcium-sensing receptor polymorphism rs17251221 in relation to coronary heart disease, type 2 diabetes, cancer and mortality: the Tromsø Study
    Rolf Jorde
    Department of Clinical Medicine, University of Tromsø, 9038, Tromso, Norway
    Eur J Epidemiol 28:569-78. 2013
    ..32, 95 % CI 1.24, 4.36) for prostate cancer, as compared to the major homozygote. This may be clinically important if confirmed in other cohorts. ..
  3. pmc Plasma profile of microRNA after supplementation with high doses of vitamin D3 for 12 months
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
    BMC Res Notes 5:245. 2012
    ..000-40.000 IU per week) and 37 subjects given placebo...
  4. pmc Polymorphisms related to the serum 25-hydroxyvitamin D level and risk of myocardial infarction, diabetes, cancer and mortality. The Tromsø Study
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, and Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
    PLoS ONE 7:e37295. 2012
    ..Recently several single nucleotide polymorphisms (SNPs) associated with serum 25-hydroxyvitamin D (25(OH)D) level have been identified. If these relations are causal one would expect a similar association between these SNPs and health...
  5. doi request reprint Associations between polymorphisms related to calcium metabolism and human height: the Tromsø Study
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Norway
    Ann Hum Genet 76:200-10. 2012
    ..In conclusion, several SNPs related to calcium metabolism are associated with height, in particular rs3829251 at the DHCR7/NADSYN1 gene...
  6. doi request reprint Vitamin D supplementation did not prevent influenza-like illness as diagnosed retrospectively by questionnaires in subjects participating in randomized clinical trials
    Rolf Jorde
    Endocrinology Research Group, Institute of Clinical Medicine, University of Tromsø, and Medical Clinic, University Hospital of North Norway, Tromsø, Norway
    Scand J Infect Dis 44:126-32. 2012
    ..Whether or not this reflects a causal relationship is unknown. We therefore wanted to examine if supplementation with vitamin D would affect the incidence and severity of influenza-like disease...
  7. doi request reprint Tracking of serum 25-hydroxyvitamin D levels during 14 years in a population-based study and during 12 months in an intervention study
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Am J Epidemiol 171:903-8. 2010
    ..Tracking of serum 25(OH)D appears similar to that for blood pressure and serum lipids, and it provides some support for the use of a single 25(OH)D measurement to predict future health outcomes...
  8. ncbi request reprint Serum parathyroid hormone as a predictor of increase in systolic blood pressure in men
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, University Hospital of North Norway, 9038 Tromsø, Norway
    J Hypertens 23:1639-44. 2005
    ..In cross-sectional studies there appears to be a link between calcium metabolism and blood pressure, and most studies have found a positive association between serum parathyroid hormone (PTH) and hypertension...
  9. doi request reprint High serum 25-hydroxyvitamin D concentrations are associated with a favorable serum lipid profile
    R Jorde
    Tromsø Endocrine Research Group, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Clin Nutr 64:1457-64. 2010
    ..Low serum 25-hydroxyvitamin D (25(OH)D) concentrations are related to increased mortality. One possible explanation could be an association between serum 25(OH)D and serum lipids...
  10. ncbi request reprint Neuropsychological function in relation to serum parathyroid hormone and serum 25-hydroxyvitamin D levels. The Tromsø study
    Rolf Jorde
    Department of Internal Medicine, Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    J Neurol 253:464-70. 2006
    ..In conclusion, a deranged calcium metabolism appears to be associated with impaired function in several tests of neuropsychological function...
  11. doi request reprint Cross-sectional and longitudinal relation between serum 25-hydroxyvitamin D and body mass index: the Tromsø study
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Nutr 49:401-7. 2010
    ..The present study examines the cross-sectional and longitudinal relations between body mass index (BMI) and serum 25(OH)D, and the serum 25(OH)D response to vitamin D supplementation in relation to BMI...
  12. ncbi request reprint Screening for diabetes using HbA1c in elderly subjects
    R Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Acta Diabetol 43:52-6. 2006
    ..The prevalence of undiagnosed diabetes in need of treatment, as evaluated by the HbA1c level, was low, indicating that the focus on diabetes and quality of care for the elderly in our area is fairly good...
  13. ncbi request reprint Serum TSH levels in smokers and non-smokers. The 5th Tromsø study
    R Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Exp Clin Endocrinol Diabetes 114:343-7. 2006
    ..Cigarette smoking has a number of effects on the thyroid gland including the development of Graves' disease and thyroid multinodularity. However, the effect of smoking on thyroid function is more uncertain...
  14. doi request reprint No improvement in cardiovascular risk factors in overweight and obese subjects after supplementation with vitamin D3 for 1 year
    R Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    J Intern Med 267:462-72. 2010
    ..Cross-sectional studies indicate vitamin D to be of importance for glucose tolerance, blood pressure and serum lipids, but whether supplementation with vitamin D would improve cardio-vascular risk factors is not known...
  15. doi request reprint Effects of vitamin D supplementation on symptoms of depression in overweight and obese subjects: randomized double blind trial
    R Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    J Intern Med 264:599-609. 2008
    ....
  16. ncbi request reprint Serum levels of vitamin D and haemostatic factors in healthy subjects: the Tromsø study
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Acta Haematol 117:91-7. 2007
    ..Receptors for vitamin D have been found in various tissues, including the vascular endothelium. The role of vitamin D in the haemostatic process is uncertain, but in vitro studies may indicate a pro-fibrinolytic effect...
  17. doi request reprint No effect of supplementation with cholecalciferol on cytokines and markers of inflammation in overweight and obese subjects
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Medical Clinic, University Hospital of North Norway, Tromsø, Norway
    Cytokine 50:175-80. 2010
    ..In conclusion, we were not able to demonstrate with certainty any significant relation between serum levels of 25(OH)D levels and a number of cytokines and markers of inflammation...
  18. doi request reprint Parameters of the thrombogram are associated with serum 25-hydroxyvitamin D levels at baseline, but not affected during supplementation with vitamin D
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Norway
    Thromb Res 125:e210-3. 2010
    ..In vitro studies indicate an anticoagulant effect of 1,25-dihydroxyvitamin D, and sun exposure may lower the risk of thrombotic events. Accordingly, an effect on haemostatic parameters could be expected after supplementation with vitamin D...
  19. doi request reprint Serum 25-hydroxyvitamin D levels are strongly related to systolic blood pressure but do not predict future hypertension
    Rolf Jorde
    Institutes of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Hypertension 55:792-8. 2010
    ....
  20. pmc No significant effect on bone mineral density by high doses of vitamin D3 given to overweight subjects for one year
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, University Hospital of North Norway, Tromsø, Norway
    Nutr J 9:1. 2010
    ..However, the effect of supplementation with high doses of vitamin D on BMD is more uncertain and could in theory have both positive and negative effects...
  21. doi request reprint Supplementation with cholecalciferol does not improve glycaemic control in diabetic subjects with normal serum 25-hydroxyvitamin D levels
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Nutr 48:349-54. 2009
    ..Studies have suggested that vitamin D may be important for both insulin sensitivity and insulin secretion, and that supplementation with vitamin D may subsequently prevent development of type 2 diabetes...
  22. ncbi request reprint Coeliac disease in subjects with secondary hyperparathyroidism
    R Jorde
    Medical Department B, University of Tromsø, Tromsø, Norway
    Scand J Gastroenterol 40:178-82. 2005
    ..However, the prevalence of CD in subjects with SHP has not been reported...
  23. ncbi request reprint Serum parathyroid hormone (PTH) levels in smokers and non-smokers. The fifth Tromsø study
    R Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Endocrinol 152:39-45. 2005
    ..However, reports on PTH levels in smokers are conflicting. As serum PTH levels give important information on the calcium balance, the PTH levels in smokers are of interest...
  24. ncbi request reprint Determinants of serum calcium in men and women. The Tromsø Study
    R Jorde
    Department of Medicine, University Hospital of Northern Norway, Tromsø, Norway
    Eur J Epidemiol 17:1117-23. 2001
    ..However, none of these factors could affect the serum calcium level more than 0.02 mmol/l, and the biological significance of the observed associations questionable...
  25. doi request reprint Vitamin D and metabolic health with special reference to the effect of vitamin D on serum lipids
    Rolf Jorde
    Endocrinology Research Group, Institute of Clinical Medicine, University of Tromsø, and Medical Clinic, University Hospital of North Norway, 9038 Tromsø, Norway
    Prog Lipid Res 50:303-12. 2011
    ....
  26. ncbi request reprint Lack of significant association between intima-media thickness in the carotid artery and serum TSH level. The Tromsø Study
    Rolf Jorde
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Thyroid 18:21-5. 2008
    ..The present study was performed to examine the relation between carotid artery intima-media thickness and possible variations in thyroid function in normal subjects using serum TSH as a surrogate index of thyroid function...
  27. ncbi request reprint Neuropsychological function and symptoms in subjects with subclinical hypothyroidism and the effect of thyroxine treatment
    Rolf Jorde
    Institute of Clinical Medicine R J, K W, University of Tromsø, 9037 Tromsø, Norway
    J Clin Endocrinol Metab 91:145-53. 2006
    ..5-10.0 mIU/liter and normal serum free T4 and free T3 levels, and to study the effect of T4 supplementation...
  28. doi request reprint The serum 25-hydroxyvitamin D response to vitamin D supplementation is related to genetic factors, BMI, and baseline levels
    Allan Didriksen
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway
    Eur J Endocrinol 169:559-67. 2013
    ..How these SNPs affect the serum 25(OH)D response to vitamin D supplementation is uncertain...
  29. doi request reprint Serum 25-hydroxyvitamin D levels in subjects with reduced glucose tolerance and type 2 diabetes - the Tromsø OGTT-study
    Moira S Hutchinson
    Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Norway
    Int J Vitam Nutr Res 81:317-27. 2011
    ..120)) with increasing serum 25(OH)D quartile. However, interventional studies are needed to prove a causal relationship between vitamin D and glucose metabolism...
  30. ncbi request reprint Causes of secondary hyperparathyroidism in a healthy population: the Tromsø study
    Farahnaz Saleh
    Department of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    J Bone Miner Metab 24:58-64. 2006
    ..However, in most subjects with SHPT all tests were within the normal range, and the cause is therefore probably a combination of several factors...
  31. ncbi request reprint Serum parathyroid hormone levels predict coronary heart disease: the Tromsø Study
    Elena Kamycheva
    Department of Internal Medicine, University Hospital of North, Norway
    Eur J Cardiovasc Prev Rehabil 11:69-74. 2004
    ..We aimed to evaluate serum parathyroid hormone (PTH) levels as an independent risk factor for coronary heart disease (CHD) in subjects with serum calcium within the reference range...
  32. doi request reprint Effect of vitamin D supplement on depression scores in people with low levels of serum 25-hydroxyvitamin D: nested case-control study and randomised clinical trial
    Marie Kjærgaard
    Medical Clinic, University Hospital of North Norway N 9038 Tromsø, Norway
    Br J Psychiatry 201:360-8. 2012
    ..To compare depressive symptoms in participants with low and high serum 25-hydroxyvitamin D (25(OH)D) levels and to examine whether supplementation with vitamin D(3) would improve symptoms in those with low serum 25(OH)D levels...
  33. ncbi request reprint The associations of age, lifestyle factors and chronic disease with testosterone in men: the Tromsø Study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, N 9038, Tromsø, Norway
    Eur J Endocrinol 149:145-52. 2003
    ....
  34. doi request reprint The association between serum parathyroid hormone and bone mineral density, and the impact of smoking: the Tromso Study
    Monica Sneve
    Department of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Endocrinol 158:401-9. 2008
    ..To explore the relation between serum parathyroid hormone (PTH) and bone mineral density (BMD), adjusted for lifestyle factors including smoking...
  35. doi request reprint The relationship between serum TSH and bone mineral density in men and postmenopausal women: the Tromsø study
    Guri Grimnes
    Medical Department B, University Hospital of North Norway, Tromsø, Norway
    Thyroid 18:1147-55. 2008
    ..We wanted to explore the relationship between serum TSH and bone mineral density (BMD) in a healthy population...
  36. doi request reprint The phosphodiesterase 8B gene rs4704397 is associated with thyroid function, risk of myocardial infarction, and body height: the Tromsø study
    Rolf Jorde
    1 Tromsø Endocrine Research Group, University of Tromsø, Tromsø, Norway
    Thyroid 24:215-22. 2014
    ..If the relation between thyroid function and CVD is causal, one could also expect rs4704397 genotypes to predict CVD and possibly health in general...
  37. ncbi request reprint Intakes of calcium and vitamin d predict body mass index in the population of Northern Norway
    Elena Kamycheva
    Medical Department, University Hospital of North Norway, Tromsø, Norway
    J Nutr 133:102-6. 2003
    ..51 (95% CI 1.23, 1.85) in women compared with the highest quartile. In conclusion, calcium and vitamin D intakes may have opposing effects on body weight, which is difficult to explain given current knowledge of calcium metabolism...
  38. ncbi request reprint Association of endogenous testosterone with blood pressure and left ventricular mass in men. The Tromsø Study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Endocrinol 150:65-71. 2004
    ..To test the hypothesis that lower endogenous testosterone levels are associated with higher blood pressure, left ventricular mass, and left ventricular hypertrophy...
  39. ncbi request reprint Thyroid stimulating hormone and left ventricular function
    Amjid Iqbal
    Department of Cardiology, University Hospital of North Norway, 9038 Tromsø, Norway
    J Clin Endocrinol Metab 92:3504-10. 2007
    ..Overt hypo- and hyperthyroidism are associated with cardiac disease, whereas this relation is more uncertain regarding subclinical thyroid dysfunction...
  40. doi request reprint Effect of smoking on the serum levels of 25-hydroxyvitamin D depends on the assay employed
    Guri Grimnes
    Medical Clinic, University Hospital of North Norway, Tromsø, Norway
    Eur J Endocrinol 163:339-48. 2010
    ....
  41. pmc Vitamin D, insulin secretion, sensitivity, and lipids: results from a case-control study and a randomized controlled trial using hyperglycemic clamp technique
    Guri Grimnes
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Diabetes 60:2748-57. 2011
    ....
  42. doi request reprint Low serum 25-hydroxyvitamin D levels are associated with increased all-cause mortality risk in a general population: the Tromsø study
    Moira Strand Hutchinson
    Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Endocrinol 162:935-42. 2010
    ..Based on this, low serum 25(OH)D levels should be associated with higher all-cause mortality in a general population. This hypothesis was tested in the present study...
  43. doi request reprint Serum 25-hydroxyvitamin D and left ventricular systolic function in a non-smoking population: the Tromsø Study
    Elena Kamycheva
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Eur J Heart Fail 15:490-5. 2013
    ..Vitamin D inadequacy has also been linked to cardiovascular morbidity. We aimed to evaluate the relationship between serum 25-hydroxyvitamin D [25(OH)D] and LV systolic function in a general population...
  44. doi request reprint Serum 25-hydroxyvitamin D levels are inversely associated with glycated haemoglobin (HbA(1c)). The Tromsø Study
    Moira S Hutchinson
    Institute of Clinical Medicine, University of Tromsø, Norway
    Scand J Clin Lab Invest 71:399-406. 2011
    ..In a sub-analysis on subjects with diabetes the association between serum 25(OH)D and HbA(1c) appeared even stronger with a difference in HbA(1c) of 0.48 % between the highest and lowest serum 25(OH)D quartiles...
  45. ncbi request reprint Serum parathyroid hormone level is associated with body mass index. The 5th Tromsø study
    Elena Kamycheva
    Department of Internal Medicine, University Hospital of North Norway, N 9038, Tromso, Norway
    Eur J Endocrinol 151:167-72. 2004
    ..To study whether serum parathyroid hormone (PTH) and serum calcium are associated with body mass index (BMI), and their predicting role in obesity...
  46. ncbi request reprint The associations of endogenous testosterone and sex hormone-binding globulin with glycosylated hemoglobin levels, in community dwelling men. The Tromsø Study
    J Svartberg
    Department of Medicine, University Hospital of North Norway, N 9038 Tromsø, Norway
    Diabetes Metab 30:29-34. 2004
    ..We therefore undertook an analysis of the cross-sectional associations of total testosterone and SHBG levels with HbA1c levels, in a general population of 1419 men aged 25-84...
  47. doi request reprint Variation of serum creatine kinase (CK) levels and prevalence of persistent hyperCKemia in a Norwegian normal population. The Tromsø Study
    Hallvard Lilleng
    Department of Neurology and Neurophysiology, University Hospital of North Norway, Tromsø N 9038, Norway
    Neuromuscul Disord 21:494-500. 2011
    ..This study has identified persistent hyperCKemia in 1.3% of the normal population, and demonstrates the importance of performing controlled CK analyses, also in those with identified risk factors...
  48. doi request reprint Polyneuropathy in type 1 and type 2 diabetes: comparison of nerve conduction studies, thermal perception thresholds and intraepidermal nerve fibre densities
    Sissel Løseth
    Department of Clinical Medicine Neurology, University of Tromso, Tromso, Norway
    Diabetes Metab Res Rev 26:100-6. 2010
    ..To evaluate possible differences in distal polyneuropathy (PN) characteristics and degree of abnormalities for various small and large fibre parameters in diabetes type 1 (DM1) and type 2 (DM2)...
  49. doi request reprint Effects of a 1-year supplementation with cholecalciferol on interleukin-6, tumor necrosis factor-alpha and insulin resistance in overweight and obese subjects
    Julia Beilfuss
    Department of Gastroenterology, Medical Clinic, University Hospital of North Norway, 9038 Tromsø, Norway
    Cytokine 60:870-4. 2012
    ..One year intervention with vitamin D decreased serum IL-6 levels; however hs-CRP levels were significantly increased. Neither measures of insulin resistance, nor TNF-α were influenced by a 1-year vitamin D supplementation...
  50. ncbi request reprint Waist circumference and testosterone levels in community dwelling men. The Tromsø study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Eur J Epidemiol 19:657-63. 2004
    ....
  51. ncbi request reprint Endogenous testosterone levels and smoking in men. The fifth Tromsø study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Int J Androl 30:137-43. 2007
    ..Thus, smoking seems to be an important confounding factor when evaluating testosterone levels, and could possibly mask borderline hypogonadism...
  52. doi request reprint Serum 1,25-dihydroxy vitamin D is inversely associated with body mass index
    Steinar Konradsen
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Nutr 47:87-91. 2008
    ....
  53. doi request reprint Insulin-like growth factor I, growth hormone, and insulin sensitivity: the effects of a one-year cholecalciferol supplementation in middle-aged overweight and obese subjects
    Elena Kamycheva
    Department of Medicine, University Hospital of North Norway, 9038, Tromsø, Norway
    Endocrine 43:412-8. 2013
    ..Adverse effects of GH-IGF-I axis on glucose metabolism and the development of metabolic syndrome may be in part associated with the changes in vitamin D status...
  54. pmc Effects of Age and Sex on Estimated Diabetes Prevalence Using Different Diagnostic Criteria: The Tromsø OGTT Study
    Moira Strand Hutchinson
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway Division of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Int J Endocrinol 2013:613475. 2013
    ..Among a substantial proportion of elderly subjects, and especially elderly women, the 2-hour plasma glucose was the only abnormal value...
  55. doi request reprint Low serum 25-hydroxyvitamin D levels are associated with depression in an adult Norwegian population
    Marie Kjærgaard
    University Hospital of North Norway, Tromso, Norway
    Psychiatry Res 190:221-5. 2011
    ..59 (0.39-0.89) in smokers and 0.74 (0.58-0.95) in non-smokers compared with the lowest quartile. However, no conclusions with regard to causality can be drawn due to the cross-sectional design of the study...
  56. ncbi request reprint The effects of calcium supplementation to patients with primary hyperparathyroidism and a low calcium intake
    Rolf Jorde
    Department of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Nutr 41:258-63. 2002
    ..In patients with primary hyperparathyroidism (PHPT) a low calcium intake might cause increased bone loss and thus aggravate osteoporosis, and a high intake might increase serum calcium level and the risk of nephrolithiasis...
  57. ncbi request reprint Prevalence and causes of undiagnosed hyperthyroidismin an adult healthy population. The Tromsø study
    M M Bjørndal
    Institute of Clinical Medicine, University of Tromsø, Norway
    J Endocrinol Invest 31:856-60. 2008
    ..The causes of subclinical hyperthyroidism have only been reported from clinical studies...
  58. ncbi request reprint Intra-individual variability and longitudinal changes in glycaemic control in patients with Type 1 diabetes mellitus
    R Jorde
    Department of Internal Medicine, University Hospital of Tromsø, Norway
    Diabet Med 17:451-6. 2000
    ..The purpose of the present study was therefore to study predictors of intra-individual variability of the HbA1c level together with changes in HbA1c over time...
  59. ncbi request reprint Seasonal variation of testosterone and waist to hip ratio in men: the Tromsø study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, N 9038 Tromsø
    J Clin Endocrinol Metab 88:3099-104. 2003
    ..The variations in hormone levels were large, with a 31% difference between the lowest and highest monthly mean level of free testosterone. Prospective studies are needed to establish the direction of the association and its etiology...
  60. ncbi request reprint Serum calcium and cardiovascular risk factors and diseases: the Tromsø study
    R Jorde
    Department of Medicine, University Hospital of Tromsø, Norway
    Hypertension 34:484-90. 1999
    ..However, it appears likely that serum calcium is a predictor of cardiovascular disease in men...
  61. ncbi request reprint Measuring gonadotropins is of limited value in detecting hypogonadism in ageing men: the Tromsø study
    Johan Svartberg
    Section of Endocrinology, Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Int J Androl 30:445-51. 2007
    ..001). In the longitudinal study, however, LH levels did not predict changes in total and free testosterone levels. Thus, in clinical practice, measuring gonadotropins seems to be of limited value in detecting hypogonadism in ageing men...
  62. ncbi request reprint Effect of calcium supplementation on blood pressure in patients with secondary hyperparathyroidism
    F Saleh
    Department of Internal Medicine and Clinical Chemistry, University Hospital of North Norway, Tromsø, Norway
    J Endocrinol Invest 26:35-41. 2003
    ..To conclude, in the present setting we did not find any effect on BP by calcium supplementation in subjects with moderate secondary hyperparathyroidism...
  63. ncbi request reprint Relation between low calcium intake, parathyroid hormone, and blood pressure
    R Jorde
    Department of Medicine, University Hospital of Tromsø, Tromsø, Norway
    Hypertension 35:1154-9. 2000
    ..This is associated with moderately reduced bone mineral content and bone mineral density in the lumbar spine. In women, high levels of serum PTH are also associated with markedly increased blood pressure...
  64. ncbi request reprint Parathyroid hormone and left ventricular hypertrophy
    F N Saleh
    Department of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
    Eur Heart J 24:2054-60. 2003
    ..In vitro studies indicate a hypertrophic effect of PTH on cardiomyocytes. The purpose of this study was to examine the relation between PTH and left ventricular hypertrophy in a general population...
  65. ncbi request reprint Population based study on serum ionised calcium, serum parathyroid hormone, and blood pressure. The Tromsø study
    R Jorde
    Department of Medicine, University Hospital of Tromso, Tromso, Norway
    Eur J Endocrinol 141:350-7. 1999
    ..To study associations between serum ionised calcium, serum parathyroid hormone (PTH) and blood pressure...
  66. ncbi request reprint Testosterone treatment improves body composition and sexual function in men with COPD, in a 6-month randomized controlled trial
    J Svartberg
    Department of Medicine, University Hospital of North Norway, N 9038 Tromsø, Norway
    Respir Med 98:906-13. 2004
    ..Furthermore, there were no clinical or biochemical side effects...
  67. doi request reprint Baseline serum 25-hydroxyvitamin D concentrations in the Tromsø Study 1994-95 and risk of developing type 2 diabetes mellitus during 11 years of follow-up
    G Grimnes
    Medical Clinic, University Hospital of North Norway, Tromsø, Norway
    Diabet Med 27:1107-15. 2010
    ..We wanted to test the hypothesis that low serum 25-hydroxyvitamin D (25(OH)D) concentrations are associated with increased risk of developing Type 2 diabetes mellitus (DM) in a population-based cohort during 11 years of follow-up...
  68. doi request reprint Cross-sectional study on the relationship between body mass index and smoking, and longitudinal changes in body mass index in relation to change in smoking status: the Tromso Study
    M Sneve
    Medical Department B, University Hospital of North Norway, Tromsø, Norway
    Scand J Public Health 36:397-407. 2008
    ..To evaluate the effects of smoking and other lifestyle factors on body mass index (BMI), and changes in BMI in relation to changes in smoking status...
  69. doi request reprint Testosterone treatment in elderly men with subnormal testosterone levels improves body composition and BMD in the hip
    J Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Int J Impot Res 20:378-87. 2008
    ..Older men with subnormal testosterone levels had an unfavorable metabolic profile. Testosterone treatment improved body composition, but it did not reverse the unfavorable metabolic profile...
  70. ncbi request reprint Insulin sensitivity in subjects with secondary hyperparathyroidism and the effect of a low serum 25-hydroxyvitamin D level on insulin sensitivity
    E Kamycheva
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    J Endocrinol Invest 30:126-32. 2007
    ..The amounts of total body and truncal fat were negatively and significantly associated with the ISI, whereas no association between measures of lean body mass were associated with insulin secretion or sensitivity...
  71. doi request reprint Idiopathic polyneuropathy and impaired glucose metabolism in a Norwegian patient series
    M Nebuchennykh
    Department of Neurology, University Hospital of North Norway, Tromsø, Norway
    Eur J Neurol 15:810-6. 2008
    ..North American studies have indicated a high prevalence of impaired glucose tolerance (IGT) in patients with sensory polyneuropathy. We searched for the occurrence of IGT in a Norwegian patient material with polyneuropathy...
  72. ncbi request reprint Blood pressure in relation to serum thyrotropin: The Tromsø study
    A Iqbal
    Department of Cardiology, University Hospital of North Norway, Tromsø, Norway
    J Hum Hypertens 20:932-6. 2006
    ..79+/-0.78 versus 1.63+/-0.75 mIU/l for female subjects, P < 0.05). In conclusion, there is a modest, but significant positive association between serum TSH and blood pressure within the normal serum TSH range...
  73. ncbi request reprint Serum lipid levels in relation to serum thyroid-stimulating hormone and the effect of thyroxine treatment on serum lipid levels in subjects with subclinical hypothyroidism: the Tromsø Study
    A Iqbal
    Department of Cardiology, University Hospital of North Norway, Tromsø, Norway
    J Intern Med 260:53-61. 2006
    ..To evaluate the relation between serum thyroid-stimulating hormone (TSH) and lipids...
  74. ncbi request reprint The relationship between blood pressure and serum parathyroid hormone with special reference to urinary calcium excretion: the Tromsø study
    F Saleh
    Department of Internal Medicine B, University Hospital of North Norway, 9038 Tromsø, Norway
    J Endocrinol Invest 29:214-20. 2006
    ..In conclusion, blood pressure and serum PTH are associated. This association cannot be explained by the urinary calcium excretion alone...
  75. ncbi request reprint Serum TSH is positively associated with BMI
    A Nyrnes
    Department of Geriatric Medicine, University Hospital of North Norway, Tromsø
    Int J Obes (Lond) 30:100-5. 2006
    ..To investigate whether there is an association between serum thyroid-stimulating hormone (TSH) within the normal range and body mass index (BMI)...
  76. ncbi request reprint Effects of acute hypercalcaemia on blood pressure in subjects with and without parathyroid hormone secretion
    E Kamycheva
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Acta Physiol Scand 184:113-9. 2005
    ..To elucidate this, we infused calcium intravenously in subjects with and without PTH secretion...
  77. doi request reprint Supplementation with cholecalciferol does not result in weight reduction in overweight and obese subjects
    M Sneve
    Department of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Endocrinol 159:675-84. 2008
    ..Investigate whether cholecalciferol supplementation leads to weight loss in overweight and obese adults...
  78. pmc Supplementation with High Doses of Vitamin D to Subjects without Vitamin D Deficiency May Have Negative Effects: Pooled Data from Four Intervention Trials in Tromsø
    Rolf Jorde
    Tromsø Endocrine Research Group, Department of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway Division of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    ISRN Endocrinol 2013:348705. 2013
    ..05). No serious side-effects were seen. In conclusion, in subjects without vitamin D deficiency, there is no improvement in serum lipids, HbA1c, or HS-CRP with high dose vitamin D supplementation. If anything, the effect is negative...
  79. ncbi request reprint Left ventricular dysfunction in subjects with mild secondary hyperparathyroidism detected with pulsed wave tissue Doppler echocardiography
    Amjid Iqbal
    Department of Cardiology, University Hospital of North Norway, Tromsø, Norway
    Cardiology 105:1-8. 2006
    ....
  80. ncbi request reprint Primary hyperparathyroidism detected in a health screening. The Trømsø study
    R Jorde
    Department of Internal Medicine, University Hospital of Tromsø, 9038 Tromsø, Norway
    J Clin Epidemiol 53:1164-9. 2000
    ..6% to 13.9%. The study concluded that a high prevalence of primary hyperparathyroidism exists in older women, although the progression of the disease, judging by serum calcium and PTH measurements, appears to be very slow...
  81. ncbi request reprint Calcium from dairy products, vitamin D intake, and blood pressure: the Tromso Study
    R Jorde
    Department of Medicine, the University Hospital of Tromso, Tromso, Norway
    Am J Clin Nutr 71:1530-5. 2000
    ..The present epidemiologic study was conducted in Tromso, Northern Norway, in 1994-1995...
  82. doi request reprint Association between headache and serum 25-hydroxyvitamin D; the Tromsø Study: Tromsø 6
    Marie Kjaergaard
    Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
    Headache 52:1499-505. 2012
    ..High prevalence of headache has been associated with high latitude, thus suggesting a relation with vitamin D. However, there are so far no reports on the association between serum 25-hydroxyvitamin D (25[OH]D) and headache...
  83. ncbi request reprint Pancreatic polypeptide is increased in patients with advanced malignant disease
    Audhild Hjalmarsen
    Division of Pulmonary Medicine, Department of Medicine, University Hospital of Northern Norway, N 9038 Tromsø, Norway
    Anticancer Res 24:2515-7. 2004
    ..The aim of this study was to evaluate PP and autonomic neuropathy in patients with advanced malignant disease...
  84. doi request reprint Early diabetic neuropathy: thermal thresholds and intraepidermal nerve fibre density in patients with normal nerve conduction studies
    Sissel Løseth
    Dept of Neurology, Institute of Clinical Medicine, University of Tromsø and University Hospital of North Norway, 9038, Tromsø, Norway
    J Neurol 255:1197-202. 2008
    ....
  85. ncbi request reprint Ability of patients with type 1 diabetes mellitus to predict changes in HbA1c levels
    R Jorde
    Department of Medicine, University Hospital of Tromsø, Norway
    Diabetes Metab 25:241-5. 1999
    ..5% at the end of the study. Those predicting correctly did no more home blood glucose measurements than the others. In conclusion, the patients' own perception of glycaemic control is a poor indicator of HbA1c changes over time...
  86. ncbi request reprint ["Subclinical" thyroid disease]
    Rolf Jorde
    Medisinsk avdeling Universitetssykehuset Nord Norge 9038 Tromsø
    Tidsskr Nor Laegeforen 122:938-40. 2002
    ..It is generally easy to diagnose and treat patients with thyroid diseases, though there has been considerable uncertainty over whether or not to treat patients with subclinical disease...