Johan Svartberg

Summary

Affiliation: University Hospital of North Norway
Country: Norway

Publications

  1. 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
  2. doi request reprint Androgens and chronic obstructive pulmonary disease
    Johan Svartberg
    Division of Internal Medicine, University Hospital of North Norway, University of Tromsø, Tromsø, Norway
    Curr Opin Endocrinol Diabetes Obes 17:257-61. 2010
  3. ncbi request reprint Low testosterone levels are associated with carotid atherosclerosis in men
    J Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    J Intern Med 259:576-82. 2006
  4. ncbi request reprint Epidemiology: testosterone and the metabolic syndrome
    J Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Int J Impot Res 19:124-8. 2007
  5. ncbi request reprint Reduced pulmonary function is associated with lower levels of endogenous total and free testosterone. The Tromsø study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Epidemiol 22:107-12. 2007
  6. 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
  7. 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
  8. doi request reprint Endogenous sex hormone levels in men are not associated with risk of venous thromboembolism: the Tromso study
    Johan Svartberg
    Section of Endocrinology, Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Endocrinol 160:833-8. 2009
  9. doi request reprint Vasomotor symptoms and mortality: the Rancho Bernardo Study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Menopause 16:888-91. 2009
  10. ncbi request reprint [Should older men be treated with testosterone?]
    Johan Svartberg
    Endokrinologisk seksjon, Medisinsk avdeling B, Universitetssykehuset Nord Norge, 9038 Tromsø
    Tidsskr Nor Laegeforen 125:879-82. 2005

Detail Information

Publications53

  1. 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...
  2. doi request reprint Androgens and chronic obstructive pulmonary disease
    Johan Svartberg
    Division of Internal Medicine, University Hospital of North Norway, University of Tromsø, Tromsø, Norway
    Curr Opin Endocrinol Diabetes Obes 17:257-61. 2010
    ..To evaluate the recent literature on the effect of the use of androgens in men with chronic obstructive pulmonary disease (COPD)...
  3. ncbi request reprint Low testosterone levels are associated with carotid atherosclerosis in men
    J Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    J Intern Med 259:576-82. 2006
    ..To study the relationship between endogenous sex hormone levels and intima-media thickness (IMT) of the carotid artery measured by ultrasonography...
  4. ncbi request reprint Epidemiology: testosterone and the metabolic syndrome
    J Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Int J Impot Res 19:124-8. 2007
    ..Thus, testosterone may have a protective role in the development of metabolic syndrome and subsequent diabetes mellitus and cardiovascular disease in aging men. However, clinical trials are needed to confirm this assumption...
  5. ncbi request reprint Reduced pulmonary function is associated with lower levels of endogenous total and free testosterone. The Tromsø study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Epidemiol 22:107-12. 2007
    ..We suggest that the reduction of total and free testosterone could be due to an alteration of the hypothalamic-pituitary response...
  6. 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...
  7. 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...
  8. doi request reprint Endogenous sex hormone levels in men are not associated with risk of venous thromboembolism: the Tromso study
    Johan Svartberg
    Section of Endocrinology, Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Eur J Endocrinol 160:833-8. 2009
    ..As arterial CVDs and venous thromboembolism (VTE) have been shown to share common risk factors, the purpose of the present study was to determine the impact of endogenous sex hormone levels on the incidence of VTE in a cohort of men...
  9. doi request reprint Vasomotor symptoms and mortality: the Rancho Bernardo Study
    Johan Svartberg
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Menopause 16:888-91. 2009
    ..The purpose of this study was to examine the associations of vasomotor symptoms with risk of all-cause, cardiovascular disease (CVD), and coronary heart disease (CHD) mortality in community-dwelling older women, with a mean age of 69 years...
  10. ncbi request reprint [Should older men be treated with testosterone?]
    Johan Svartberg
    Endokrinologisk seksjon, Medisinsk avdeling B, Universitetssykehuset Nord Norge, 9038 Tromsø
    Tidsskr Nor Laegeforen 125:879-82. 2005
    ..Despite this uncertainty the sale of testosterone have increased enormously over the last few years, hence it seems important to discuss what we now know about such treatment...
  11. 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...
  12. 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...
  13. 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
    ....
  14. 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
    ....
  15. ncbi request reprint [Hyperprolactinemia and prolactinemia--investigation and treatment]
    Johan Svartberg
    Endokrinologisk seksjon Medisinsk avdeling Universitetssykehuset i Nord Norge 9038 Tromsø
    Tidsskr Nor Laegeforen 122:494-8. 2002
    ..In cases of macroprolactinomas, symptoms caused by local mass effects can be seen. A variety of other conditions may also cause hyperprolactinaemia; the goal of the examination is to identify the cause...
  16. 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...
  17. doi request reprint Change in cardiovascular risk factors in relation to diabetes status: the Tromso Study
    Josepha Joseph
    Department of Community Medicine, University of Tromsø, Tromsø, Norway
    Eur J Prev Cardiol 19:551-7. 2012
    ..To investigate changes in cardiovascular risk factors over 14 years in relation to diabetes status...
  18. doi request reprint Low testosterone and sex hormone-binding globulin levels and high estradiol levels are independent predictors of type 2 diabetes in men
    Torkel Vikan
    Division of Internal Medicine, Department of Cardiology, University Hospital of North Norway, Tromsø 9038, Norway
    Eur J Endocrinol 162:747-54. 2010
    ..To study the impact of endogenous sex hormone levels in community-dwelling men on later risk for type 2 diabetes...
  19. 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...
  20. ncbi request reprint Low serum testosterone in men is inversely associated with non-fasting serum triglycerides: the Tromsø study
    Ingvild Agledahl
    Department of Medicine, University Hospital of North Norway, 9038 Tromsø, Norway
    Nutr Metab Cardiovasc Dis 18:256-62. 2008
    ..To study the relationships between endogenous testosterone, sex hormone-binding globulin (SHBG) and serum lipids in non-fasting men...
  21. doi request reprint Impact of long-term testosterone treatment on plasma levels of free TFPI and TF-induced thrombin generation ex vivo in elderly men with low testosterone levels
    Ingvild Agledahl
    Department of Medicine, Institute of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway
    Thromb Haemost 102:945-50. 2009
    ..The potential antithrombotic role of testosterone therapy remains to be elucidated...
  22. doi request reprint Clinical, immunological, and genetic features of autoimmune primary adrenal insufficiency: observations from a Norwegian registry
    Martina M Erichsen
    Department of Medicine, Haukeland University Hospital, N 5021 Bergen, Norway
    J Clin Endocrinol Metab 94:4882-90. 2009
    ..We aimed to determine the clinical, immunological, and genetic features of a national registry-based cohort...
  23. doi request reprint Androgen receptor gene polymorphism and the metabolic syndrome in 60-80 years old Norwegian men
    Paal André Skjaerpe
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Int J Androl 33:500-6. 2010
    ..013) than those with only one component. In conclusion, there were no associations with GGN repeat length, while short CAG repeat length seems to be associated with increased risk of MS...
  24. pmc Risk factors for type 2 diabetes in groups stratified according to metabolic syndrome: a 10-year follow-up of the Tromsø Study
    Josepha Joseph
    Department of Community Medicine, University of Tromsø, 9037 Tromsø, Norway
    Eur J Epidemiol 26:117-24. 2011
    ..2 to 87.1% (P value < 0.0001). One half of the incident cases of type 2 diabetes were missed by using high metabolic score for risk prediction...
  25. 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
    ..15 pmol/L) levels than subjects with the G:G genotype. Conclusion: rs4704397 is associated with thyroid function, risk of MI, and body height. However, confirmation in other cohorts is needed before firm conclusions can be drawn. ..
  26. doi request reprint Incidence of and risk factors for type-2 diabetes in a general population: the Tromsø Study
    Josepha Joseph
    Department of Community Medicine, University of Tromsø, Tromsø, Norway
    Scand J Public Health 38:768-75. 2010
    ..08-0.31%) for the lowest risk group.Conclusions: A family history of diabetes, elevated BMI, and high triglyceride levels identifies independent of cardiovascular risk factors, a group with especially high risk of T2DM. [corrected]..
  27. ncbi request reprint Endogenous sex hormones in relation to age, sex, lifestyle factors, and chronic diseases in a general population: the Tromsø Study
    Ashild Bjørnerem
    Institute of Community Medicine, University of Tromsø, N 9037 Tromsø, Norway
    J Clin Endocrinol Metab 89:6039-47. 2004
    ..001). Men with chronic diseases had lower levels of DHEAS, compared with healthy men (P < 0.001). Smokers had higher DHEAS levels than nonsmokers. Further studies are needed to confirm these hormonal changes with age and disease...
  28. doi request reprint Testosterone levels and psychological health status in men from a general population: the Tromsø study
    Linnea Hergot Berglund
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Aging Male 14:37-41. 2011
    ..To investigate the association between endogenous testosterone levels and psychological health symptoms in men from a general population...
  29. doi request reprint Postprandial triglyceride metabolism in elderly men with subnormal testosterone levels
    Ingvild Agledahl
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Asian J Androl 10:542-9. 2008
    ..To investigate the level of postprandial triglycerides (TG)s in elderly men with subnormal testosterone level (< or = 11.0 nmol/L) compared to men with normal testosterone level (> 11.0 nmol/L)...
  30. pmc Androgen receptor gene polymorphism and sex hormones in elderly men: the Tromsø study
    Paal André Skjaerpe
    Institute of Clinical Medicine, University of Tromsø, Tromsø 9037, Norway
    Asian J Androl 11:222-8. 2009
    ..These findings indicate that when clinically evaluating T and LH levels in elderly men, the CAG and GGN repeat lengths do not need to be taken into consideration...
  31. 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...
  32. ncbi request reprint Impact of testosterone treatment on postprandial triglyceride metabolism in elderly men with subnormal testosterone levels
    Ingvild Agledahl
    Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Scand J Clin Lab Invest 68:641-8. 2008
    ..To investigate the impact of testosterone supplementation on postprandial triglycerides in elderly men with subnormal endogenous testosterone...
  33. 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...
  34. doi request reprint Endogenous sex hormones and the prospective association with cardiovascular disease and mortality in men: the Tromsø Study
    Torkel Vikan
    Division of Internal Medicine, University Hospital of North Norway, Tromsø 9038, Norway
    Eur J Endocrinol 161:435-42. 2009
    ..To study the impact of endogenous testosterone levels in community-dwelling men on later risk for myocardial infarction (MI) and all-cause, cardiovascular disease (CVD), and ischemic heart disease (IHD) mortality...
  35. 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...
  36. doi request reprint Testosterone, hemostasis, and cardiovascular diseases in men
    Ellen Brodin
    Hematological Research Group HERG, Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Semin Thromb Hemost 37:87-94. 2011
    ..The present review focuses on the coagulation system and CVD from the perspective of testosterone...
  37. 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...
  38. doi request reprint Normal overall mortality rate in Addison's disease, but young patients are at risk of premature death
    Martina M Erichsen
    Section for Endocrinology, Department of Medicine, Haukeland University Hospital, N 5021 Bergen, Norway
    Eur J Endocrinol 160:233-7. 2009
    ..Primary adrenal insufficiency (Addison's disease) is a rare autoimmune disease. Until recently, life expectancy in Addison's disease patients was considered normal...
  39. ncbi request reprint Plasma free tissue factor pathway inhibitor (TFPI) levels and TF-induced thrombin generation ex vivo in men with low testosterone levels
    Ingvild Agledahl
    Center for Atherothrombotic Research in Tromsø CART, Department of Medicine, Institute of Clinical Medicine, University of Tromsø, 9037 Tromsø, Norway
    Thromb Haemost 101:471-7. 2009
    ..Our findings suggest that low testosterone levels in elderly men is associated with low plasma free TFPI Ag and subsequent shortened initiation phase of TF-induced coagulation...
  40. 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
    ....
  41. doi request reprint Endogenous testosterone and the prospective association with carotid atherosclerosis in men: the Tromsø study
    T Vikan
    Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
    Eur J Epidemiol 24:289-95. 2009
    ..The lack of prospective associations in our study may be due to increased use of anti-hypertensive and lipid-lowering drugs from 1994 baseline to follow-up...
  42. 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...
  43. 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...
  44. 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...
  45. 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...
  46. ncbi request reprint Could seasonal variation in testosterone levels in men be related to sleep?
    J Svartberg
    Section of Endocrinology, Department of Medicine, University Hospital of North Norway, Tromsø, Norway
    Aging Male 7:205-10. 2004
    ..One possible explanation, besides the difference in climate, for the diverging findings between our previous study and the present study is different sleep patterns...
  47. ncbi request reprint Components of the metabolic syndrome in long-term survivors of testicular cancer
    H S Haugnes
    Department of Oncology, Institute of Clinical Medicine, University of Tromsø, Norway
    Ann Oncol 18:241-8. 2007
    ..A possible explanation of the excess cardiovascular risk in testicular cancer (TC) survivors is development of metabolic syndrome. The association between metabolic syndrome and TC treatment is examined in long-term survivors...
  48. ncbi request reprint Surviving extreme hypercalcaemia--a case report and review of the literature
    K Marienhagen
    Department of Medicine, University Hospital of North Norway, Tromso, Norway
    J Intern Med 258:86-9. 2005
    ..Successful parathyroidectomy quickly relieves symptoms and prevents recurrence...
  49. doi request reprint Radiotherapy for rectal cancer is associated with reduced serum testosterone and increased FSH and LH
    Kjersti Bruheim
    The Cancer Center, Ullevaal University Hospital, Oslo, Norway
    Int J Radiat Oncol Biol Phys 70:722-7. 2008
    ..The aim of this study was to determine whether radiotherapy for rectal cancer affects testosterone production...
  50. ncbi request reprint [Hormonally inactive pituitary adenomas]
    Morten Lund-Johansen
    Nevrokirurgisk avdeling, Haukeland Universitetssykehus, Bergen
    Tidsskr Nor Laegeforen 123:2253-6. 2003
    ..This paper surveys hormonally inactive pituitary tumours on the basis of the current international literature; it also reflects the experience of the authors...
  51. ncbi request reprint [Endogenous Cushing's syndrome]
    Johan Arild Evang
    Endokrinologisk seksjon, Medisinsk avdeling, Rikshospitalet, 0027 Oslo
    Tidsskr Nor Laegeforen 126:599-602. 2006
    ..New diagnostic procedures make today's assessment more accurate. We describe which tests should be done when there is suspicion of the syndrome. Treatment options are mentioned...
  52. doi request reprint Preoperative octreotide treatment in newly diagnosed acromegalic patients with macroadenomas increases cure short-term postoperative rates: a prospective, randomized trial
    Sven M Carlsen
    Department of Endocrinology, St Olavs Hospital, University Hospital of Trondheim, 7006 Trondheim, Norway
    J Clin Endocrinol Metab 93:2984-90. 2008
    ..Surgery is the primary treatment of acromegaly. However, it often fails to cure the patient. New strategies that improve surgical outcome are needed...
  53. ncbi request reprint [Primary adrenal failure--causes, diagnostics and therapy]
    Kristian Løvås
    Institutt for indremedisin, Universitetet i Bergen, Medisinsk avdeling Haukeland Universitetssykehus
    Tidsskr Nor Laegeforen 125:155-8. 2005
    ..An overview of primary adrenal failure with emphasis on replacement therapy is presented. The article is based on a review of recent literature and authors' personal experience...