TY - JOUR
T1 - Decreased expression of β1- and β 2-adrenoceptors in human diabetic artrial appendage
AU - Dinçer, U. Deniz
AU - Güner, Şahika
AU - Tay, Aydin
AU - Arioǧlu, Ebru
AU - Taşdelen, Atilay
AU - Aşlamaci, Sait
AU - Bidasee, Keshore R.
PY - 2003/6/20
Y1 - 2003/6/20
N2 - Background: Using the streptozotocin-induced diabetic rat model, we have recently showed that the expression and function of β1-adrenoreceptor were decreased in the diabetic rat heart. However, the effect of diabetes on expression of β 1-adrenoreceptors in human cardiac tissue remains undefined. Therefore, the focus of the present study was to investigate the effect of diabetes on mRNA encoding β1- and β 2-ARs in human atrial tissues. Methods: Right atrial appendages from five diabetic (mean age 65 ± 4.5; 4 female, 1 male) and five nondiabetic patients (mean age5 6.2 ± 2.8; 4 male, 1 female) undergoing coronary artery bypass grafting were collected and assayed using reverse transcriptase-polymerase chain reaction (RTPCR) for their mRNA content. No patient from these two groups suffered from acute myocardial infarction and/or failure. All diabetic patients received insulin for at least two years and had been diagnosed as diabetics for at least five years. Results: When compared with levels in nondiabetics, steady state levels of mRNA encoding β 1-adrenoreceptor decreased by 69.2 ± 7.6 % in diabetic patients while β2-adrenoreceptor mRNA decreased by 32.2 ± 5.5 % (p < 0.001). Conclusions: Our findings show a decreased expression of β1- and β2-adrenoreceptors in human diabetic atrial appendage.
AB - Background: Using the streptozotocin-induced diabetic rat model, we have recently showed that the expression and function of β1-adrenoreceptor were decreased in the diabetic rat heart. However, the effect of diabetes on expression of β 1-adrenoreceptors in human cardiac tissue remains undefined. Therefore, the focus of the present study was to investigate the effect of diabetes on mRNA encoding β1- and β 2-ARs in human atrial tissues. Methods: Right atrial appendages from five diabetic (mean age 65 ± 4.5; 4 female, 1 male) and five nondiabetic patients (mean age5 6.2 ± 2.8; 4 male, 1 female) undergoing coronary artery bypass grafting were collected and assayed using reverse transcriptase-polymerase chain reaction (RTPCR) for their mRNA content. No patient from these two groups suffered from acute myocardial infarction and/or failure. All diabetic patients received insulin for at least two years and had been diagnosed as diabetics for at least five years. Results: When compared with levels in nondiabetics, steady state levels of mRNA encoding β 1-adrenoreceptor decreased by 69.2 ± 7.6 % in diabetic patients while β2-adrenoreceptor mRNA decreased by 32.2 ± 5.5 % (p < 0.001). Conclusions: Our findings show a decreased expression of β1- and β2-adrenoreceptors in human diabetic atrial appendage.
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U2 - 10.1186/1475-2840-2-6
DO - 10.1186/1475-2840-2-6
M3 - Article
C2 - 12857355
AN - SCOPUS:2942576493
VL - 2
JO - Cardiovascular Diabetology
JF - Cardiovascular Diabetology
SN - 1475-2840
M1 - 6
ER -