title: The relationship between blood urea nitrogen levels and metabolic, biochemical, and histopathologic findings of nondiabetic, nonhypertensive patients with nonalcoholic fatty liver disease.
abstract: OBJECTIVE
  Nonalcoholic fatty liver disease (NAFLD) is known as the most common cause of chronic liver disease. It is accepted that the leading cause of death in patients with NAFLD is from coronary events. Blood urea nitrogen (BUN) was used as a prognostic indicator for cardiovascular disease. We aimed to investigate the relationship between BUN levels and metabolic, biochemical, and histopathologic findings of nondiabetic patients with NAFLD.
  
  
  METHODS
  A total of 195 male patients with biopsy proven NAFLD and 82 healthy controls with normal liver and renal function tests and normal abdominal ultrasonography were enrolled in the study. BUN levels were reviewed retrospectively.
  
  
  RESULTS
  The mean BUN levels of patients and controls were 13.07 (11.3-15.41) and 13.31 (10.97-15.87) mg/dL respectively. Patients were grouped as simple steatosis (n = 33, 16.9%), borderline nonalcoholic steatohepatitis (n = 64, 32.8%), and nonalcoholic steatohepatitis (n = 98, 50.3%), and the BUN levels of the histologic subgroups were 13.14 ± 2.89, 14.34 ± 3.04, and 13.71 ± 3.21 mg/dL, respectively. We could not find any differences between the patient group and control group with respect to BUN levels.
  
  
  CONCLUSIONS
  Our findings showed that there was no relationship between BUN levels and metabolic, biochemical, and histopathologic findings of patients with NAFLD. Further investigations, including in patients with late stages of NAFLD, are required.
authors: Department of Gastroenterology, Gülhane Military Medical Academy, Ankara, Turkey.
authors: Cemal Nuri
authors: CN
authors: Erçin
authors: Department of Gastroenterology, Gülhane Military Medical Academy, Ankara, Turkey.
authors: Teoman
authors: T
authors: Doğru
authors: Department of Gastroenterology, Gülhane Military Medical Academy, Ankara, Turkey.
authors: Gürkan
authors: G
authors: Çelebi
authors: Department of Gastroenterology, Gülhane Military Medical Academy, Ankara, Turkey.
authors: Hasan
authors: H
authors: Gürel
authors: İzmir Military Hospital, İzmir, Turkey.
authors: Halil
authors: H
authors: Genç
authors: Anıttepe Military Dispensary, Medical Biochemistry, Ankara, Turkey.
authors: Erdim
authors: E
authors: Sertoğlu
authors: Department of Gastroenterology, Gülhane Military Medical Academy, Ankara, Turkey.
authors: Sait
authors: S
authors: Bağci
mesh_terms: D001706:Biopsy; D001806:Blood Urea Nitrogen; D006801:Humans; D008099:Liver; D008297:Male; D065626:Non-alcoholic Fatty Liver Disease; D014463:Ultrasonography
keywords: Nonalcoholic fatty liver disease; blood urea nitrogen; insulin resistance