RGD Reference Report - Angiotensin II type 1 receptor blocker attenuates diabetes-induced atrial structural remodeling. - Rat Genome Database

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Angiotensin II type 1 receptor blocker attenuates diabetes-induced atrial structural remodeling.

Authors: Kato, T  Yamashita, T  Sekiguchi, A  Tsuneda, T  Sagara, K  Takamura, M  Kaneko, S  Aizawa, T  Fu, LT 
Citation: Kato T, etal., J Cardiol. 2011 Sep;58(2):131-6. doi: 10.1016/j.jjcc.2011.06.003. Epub 2011 Jul 30.
RGD ID: 7245957
Pubmed: PMID:21802905   (View Abstract at PubMed)
DOI: DOI:10.1016/j.jjcc.2011.06.003   (Journal Full-text)

BACKGROUND: Diabetes mellitus promotes atrial structural remodeling, thereby producing atrial arrhythmogenicity, where advanced glycation endproducts (AGEs) and their receptor (RAGE) are implicated to play a role in the pathogenesis. PURPOSE: We investigated the effects of candesartan, an angiotensin type II receptor blocker, on the diabetes-induced atrial structural change. METHODS AND RESULTS: Diabetes was induced in 8-week-old female Sprague-Dawley rats by intraperitoneal injection of streptozotocin at 70 mg/kg. Osmotic pumps were simultaneously set to infuse candesartan at a subdepressor dose of 0.05 mg/kg/day. Twelve weeks after the induction of diabetes, the blood glucose and glycated hemoglobin A1c were significantly higher in streptozotocin-injected rats than those in control rats, and were not affected by candesartan treatment. The atria of diabetic rats showed remarkable diffuse interstitial fibrosis with more enhanced protein expressions of RAGE and connective tissue growth factor (CTGF) compared with control ones. The treatment with candesartan significantly reduced CTGF expression and effectively suppressed the development of fibrotic deposition in diabetic animals. CONCLUSIONS: Candesartan reduced CTGF expression and attenuated the fibrosis in diabetic rat atria. These results implied the protective effects of candesartan on diabetes-related atrial arrhythmias.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Cardiac Fibrosis  ISOAger (Rattus norvegicus)7245957; 7245957associated with Diabetes Mellitus more ...RGD 
Cardiac Fibrosis  IEP 7245957associated with Diabetes Mellitus more ...RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ager  (advanced glycosylation end product-specific receptor)

Genes (Mus musculus)
Ager  (advanced glycosylation end product-specific receptor)

Genes (Homo sapiens)
AGER  (advanced glycosylation end-product specific receptor)


Additional Information