title: Association of the angiotensinogen M235T and angiotensin-converting enzyme insertion/deletion gene polymorphisms in Turkish type 2 diabetic patients with and without nephropathy.
abstract: OBJECTIVE
  Recent studies have suggested an association between a deletion variant of the angiotensin-converting enzyme (ACE) gene and diabetic nephropathy. However, this finding has not been confirmed by all investigators. Furthermore, an M235T variant of the angiotensinogen (AGT) gene has been associated with hypertension, an important risk factor for the development and progression of diabetic nephropathy.
  
  
  METHODS
  We investigated the relationship of the ACE insertion/deletion (I/D) and AGT M235T gene polymorphisms in Turkish patients with type 2 diabetes mellitus (DM) with and without diabetic nephropathy. A total of 102 individuals were screened for the presence of the ACE I/D and AGT M235T polymorphism: 46 individuals who had type 2 DM with diabetic nephropathy and, as controls, 56 individuals who had type 2 DM without diabetic nephropathy. Gene polymorphisms were determined by the specific melting temperature (T(m)) values of the resulting amplicons after real-time online polymerase chain reaction and melting curve analysis.
  
  
  RESULTS
  The frequencies of the ACE DD, ID, and II genotypes were 34.8%, 37.0%, and 28.3%, respectively, among type 2 diabetic patients with nephropathy, and 33.9%, 42.9%, 23.2%, respectively (P=.788), in the control subjects without diabetic nephropathy. On the other hand, the frequencies of the AGT MM, MT, and TT genotypes among the same groups were 26.1%, 52.2%, 21.7% and 26.8%, 57.1%, 16.1%, respectively (P=.758).
  
  
  CONCLUSIONS
  There were no differences in the frequencies of the AGT M235T and ACE I/D genotypes between Turkish patients with type 2 DM with and without nephropathy.
authors.affiliation: Department of Medical Biology, Medical School, University Ege, Izmir, Turkey.
authors.forename: Zuhal
authors.initials: Z
authors.lastname: Eroglu
authors.forename: S
authors.initials: S
authors.lastname: Cetinkalp
authors.forename: Mehmet
authors.initials: M
authors.lastname: Erdogan
authors.forename: B
authors.initials: B
authors.lastname: Kosova
authors.forename: Muammer
authors.initials: M
authors.lastname: Karadeniz
authors.forename: A
authors.initials: A
authors.lastname: Kutukculer
authors.forename: C
authors.initials: C
authors.lastname: Gunduz
authors.forename: A
authors.initials: A
authors.lastname: Tetik
authors.forename: N
authors.initials: N
authors.lastname: Topcuoglu
authors.forename: A G
authors.initials: AG
authors.lastname: Ozgen
authors.forename: M
authors.initials: M
authors.lastname: Tuzun
mesh_terms: D000368:Aged; D000419:Albuminuria / Q000235:genetics; D019943:Amino Acid Substitution; D000808:Angiotensinogen / Q000235:genetics*; D001786:Blood Glucose / Q000378:metabolism; D003404:Creatinine / Q000097:blood; D003924:Diabetes Mellitus, Type 2 / Q000235:genetics*; D003928:Diabetic Nephropathies / Q000235:genetics*; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood; D008074:Lipoproteins / Q000097:blood; D008297:Male; D008875:Middle Aged; D016254:Mutagenesis, Insertional; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide; D017384:Sequence Deletion; D014421:Turkey
chemical_list: D001786:Blood Glucose; D008055:Lipids; D008074:Lipoproteins; D000808:Angiotensinogen; D003404:Creatinine; D007703:Peptidyl-Dipeptidase A