RGD Reference Report - Polymorphism of the aldosterone synthase gene is not associated with progression of diabetic nephropathy, but associated with hypertension in type 2 diabetic patients. - Rat Genome Database

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Polymorphism of the aldosterone synthase gene is not associated with progression of diabetic nephropathy, but associated with hypertension in type 2 diabetic patients.

Authors: Ko, GJ  Kang, YS  Lee, MH  Song, HK  Kim, HK  Cha, DR 
Citation: Ko GJ, etal., Nephrology (Carlton). 2008 Dec;13(6):492-9. Epub 2008 Sep 1.
RGD ID: 2307288
Pubmed: PMID:18771471   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1440-1797.2008.01005.x   (Journal Full-text)

AIM: Inhibition of aldosterone system is beneficial in diabetic nephropathy, and aldosterone synthesis is regulated at the gene-encoding aldosterone synthase (CYP11B2). Considering the role of aldosterone in diabetic nephropathy, genetic polymorphism of this gene may contribute to the development and progression of diabetic nephropathy. In this study, we investigated whether it is associated with diabetic nephropathy in type 2 diabetic patients. METHODS: 197 type 2 diabetic patients and 71 healthy controls were enrolled. The study subjects were divided into four groups: healthy controls with normoalbuminuria (n = 71), normoalbuminuric diabetic group (n = 71), microalbuminuric diabetic group (n = 51) and overt proteinuria group (n = 51). Polymorphism of aldosterone synthase gene was determined using standard PCR technique. RESULTS: Higher frequency of TT genotype and T allele in steroidogenic factor-1 (SF-1) binding site and wild type (WT) in intronic conversion (IC) in CYP11B2 was observed in diabetic patients than controls. However, there was no significant difference in SF-1 and IC genotype among diabetic patients according to the state of diabetic nephropathy. Subgroup analysis based on SF-1 polymorphism demonstrated that TT genotype is associated with higher systolic and diastolic blood pressure and higher plasma aldosterone level. In addition, WT in IC genotype showed a significantly higher urinary albumin excretion rate. Plasma aldosterone level was significantly related with systolic blood pressure. CONCLUSION: Our study suggests that aldosterone synthase gene polymorphism is not associated with progression of diabetic nephropathy, but it may contribute to the development of hypertension associated with increased aldosterone secretion in type 2 diabetic patients.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
CYP11B2Humantype 2 diabetes mellitus  IAGP DNA:polymorphism:promoter:-344C>T (human)RGD 
Cyp11b2Rattype 2 diabetes mellitus  ISOCYP11B2 (Homo sapiens)DNA:polymorphism:promoter:-344C>T (human)RGD 
Cyp11b2Mousetype 2 diabetes mellitus  ISOCYP11B2 (Homo sapiens)DNA:polymorphism:promoter:-344C>T (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Cyp11b2  (cytochrome P450, family 11, subfamily b, polypeptide 2)

Genes (Mus musculus)
Cyp11b2  (cytochrome P450, family 11, subfamily b, polypeptide 2)

Genes (Homo sapiens)
CYP11B2  (cytochrome P450 family 11 subfamily B member 2)


Additional Information