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| Content Provider | PubMed Central |
|---|---|
| Author | Watanabe, Kenichi Ohta, Yoshimi Nakazawa, Mikio Higuchi, Hiroshi Hasegawa, Go Naito, Makoto Fuse, Koichi Ito, Masahiro Hirono, Satoru Tanabe, Naohito Hanawa, Haruo Kato, Kiminori Kodama, Makoto Aizawa, Yoshifusa |
| Copyright Year | 2000 |
| Abstract | The cardioprotective properties of carvedilol (a vasodilating β-adrenoceptor blocking agent) were studied in a rat model of dilated cardiomyopathy induced by autoimmune myocarditis. Twenty-eight days after immunization, surviving Lewis rats (32/43=74%) were divided into three groups to be given 2 mg kg−1 day−1 (Group-C2, n=10) or 20 mg kg−1 day−1 (Group-C20, n=10) of carvedilol, or vehicle (0.5% methylcellulose, Group-V, n=12). After oral administration for 2 months, body weight, heart weight (HW), heart rate (HR), rat α-atrial natriuretic peptide (r-ANP) in blood, central venous pressure (CVP), mean blood pressure (mean BP), peak left ventricular pressure (LVP), left ventricular end-diastolic pressure (LVEDP), ±dP dt−1 and area of myocardial fibrosis were measured. Values were compared with those for normal Lewis rats (Group-N, n=10). Two out of 12 (17%) rats in Group-V died from day 28 to day 42 after immunization. No rat died in Groups-C2, -C20 and -N. Although the CVP, mean BP, LVP and ±dP dt−1 did not differ among the three groups, the HW, HR and r-ANP in Group-C2 (1.14±0.03, 339±16 and 135±31) and Group-C20 (1.23±0.04, 305±8 and 156±24) were significantly lower than those in Group-V (1.36±0.04 g, 389±9 beats min−1 and 375±31 pg ml−1, respectively). The LVEDP in Group-C2 was significantly lower than that in Group-V (7.4±1.4 and 12.2±1.2 mmHg, respectively, P<0.05). The area of myocardial fibrosis in Group-C2 was smaller than that in Group-V (12±1 and 31±2%, P<0.01). These results indicate that a low dose of carvedilol has beneficial effects on dilated cardiomyopathy. |
| Related Links | http://dx.doi.org/10.1038/sj.bjp.0703450 |
| Starting Page | 1489 |
| File Format | |
| ISSN | 00071188 |
| Journal | British Journal of Pharmacology |
| Issue Number | 7 |
| Volume Number | 130 |
| Language | English |
| Publisher Date | 2000-08-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology |
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