The effect of metoprolol on adriamycin-induced cardiotoxicity (AIC) was investigated. Adriamycin was administered to rats i.v. as a single dose of 6mg/kg, and metoprolol was continuously administered by an implanted osmotic pump (1 umol/hr) during four weeks.Ca 2+ -ATPase and beta-adrenoceptor densi
Congestive heart failure II
- Publisher
- Springer US
- Year
- 1991
- Tongue
- English
- Weight
- 146 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0920-3206
No coin nor oath required. For personal study only.
โฆ Synopsis
ACE-inhibition theoreticalll lay rednce myocardial ischeaia by |odnlatlng nyocardial 02 denned or coronary flow.To better define antiiscbesic efficacy end soda of action in huzans, 24 untreated, nomoteuSive Dis witb CAD uederYent 2 identical increseutal pacing stress tests, 40 tin hefore(?l) and 15 sin after(F2) 1.5 ng halaprilat lv(Gr E,n=12) or plaeehe(Gr P,n=li).Kenedynasic variables and arterial(art) and coronary venous levels of norepinep~lne(llE),epinepl~rine(E),dopasise and angiotensia II (MI) were detersised at control(C) end mazizal pacing rates (~I).AII variables ~ere cosparable in Gr g and Gr P during Yl and were reproducible during both tests in ~r ?. In contrast,iscbenla was slgsJficsntly redhead lu Gr B during 1'2 cotpared with PI(ST segseut -I.L~0.3tV vs -Lh0.3nV, resp.o and lactate estractios -h 9| vs -35-.20|, renp.,nS~). Mso,nyocardial O, estractlen was 171 lens(p<.05 vs P1).K did not affect changes in double product or overall coronary flow,hat abolished ischesiainduced nenrobaorsl activation and subsequent increases in arterial pressure (I~LP) and systemic renistasce(Sยฅ1t) [tp<.05 vs C,~p<.05 F1 vs 1'2].
H: C ~ 1'2: C ]g,l Art gE (ai01/l)
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