Circulation: exercise may help slow aging process by protecting telomeres 1

Intensive exercise protects against telomere shortening, according to an intriguing new study appearing in Circulation. German researchers studied young professional runners, middle-aged athletes, and age-matched controls who did not exercise regularly.

“The most significant finding of this study is that physical exercise of the professional athletes leads to activation of the important enzyme telomerase and stabilizes the telomere,” said Ulrich Laufs, the study’s lead author from Saarland University in Homburg, Germany, in an AHA press release.
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Dronedarone (Multaq) gains EU approval for atrial fibrillation Reply

Sanofi-aventis announced today that dronedarone (Multaq) received approval for the indication of atrial fibrillation in the European Union. Dronedarone was approved in the US last July. (Click here for our previous coverage of dronedarone.)

The approval comes with a contraindication for use in unstable patients with class III and IV heart failure, and a recommendation against its use in patients with LVEF below 35%.

Click here to read the press release from Sanofi-aventis…

NEJM: very low troponin T levels in stable CAD associated with death and HF, but not MI Reply

Using a new, highly sensitive assay for cardiac troponin T, investigators from the PEACE trial have been able to demonstrate that nearly all patients with stable CAD have detectable levels of troponin T, and that these levels may predict death and heart failure. Somewhat surprisingly, however, troponin T levels were not significantly associated with MI in the study. The results appear in a report in the New England Journal of Medicine by Torbjørn Omaland and other PEACE Trial investigators, led by Eugene Braunwald.
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Did Medicaid pay for all those Plavix ads on the news? Reply

Direct-to-consumer (DTC) advertising doesn’t increase drug usage but it does raise the cost of drugs, according to an article by Michael Law and colleagues in Archives of Internal Medicine.

Using Plavix (clopidogrel) as a case study, the researchers studied pharmacy data from Medicaid programs from 1999 through 2005. Plavix did not begin DTC advertising until 2001. The researchers found that DTC advertising did not appear to increase the amount of clopidogrel sold, but they did observe “a sudden and sustained increase in cost per unit” after DTC initiation.
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Vioxx: what did Merck know and when did it know it? 1

Merck may have been aware of the heightened cardiovascular risk of rofecoxib (Vioxx) years before it withdrew the drug from the market in 2004, according to an article appearing in the Archives of Internal Medicine.

Joseph Ross and colleagues analyzed data available to the manufacturer from 30 randomized trials and enrolling over 20,000 subjects. As early as December 2000, only a year and a half after the drug’s approval in May 1999, the data from the trials available at the time gave a strong cardiovascular safety signal (RR= 2.18, CI=0.93-5.81, p=0.07). The signal grew increasingly convincing, reaching significance (p=0.05) by June 2001 with a 35% increased risk of cardiovascular thromboembolic events or death. The signal continued to grow stronger: by September 2004 the use of rofecoxib was associated with a highly significant 43% elevated risk (RR=1.43, CI=1.16-1.76, p<0.001).
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FDA also announces safety review of sibutramine (Meridia) 1

Following a similar earlier communication today from the European Medicines Agency, the FDA late this afternoon announced an ongoing safety review of Meridia (sibutramine). The FDA announcement includes some details not contained in the EMEA communication.

According to the FDA announcement (see below), preliminary data from the SCOUT trial (Sibutramine Cardiovascular Morbidity/Mortality Outcomes in Overweight or Obese Subjects at Risk of a Cardiovascular Event) suggest that patients taking sibutramine may have a higher risk of cardiovascular events (heart attack, stroke, resuscitated cardiac arrest, or death) than patients taking placebo. The FDA reported that the rate of cardiovascular events was 11.4% in the sibutramine arm versus 10% in the placebo arm.
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EINSTEIN at ASH: rivaroxaban (Xarelto) prevents recurrent VTE, but bleeding may be a concern Reply

EINSTEIN-Extension, which will be presented as a late-breaking clinical trial at the American Society of Hematology meeting in New Orleans on December 8, demonstrates that rivaroxaban (Xarelto), the direct oral factor Xa inhibitor, is effective in the long-term prevention of recurrent venous thromboembolism. But a high bleeding rate may dampen enthusiasm for the new oral anticoagulant.

The trial randomized 1,197 patients who had already completed 6-12 months of anticoagulant treatment for a first acute episode of VTE to either rivaroxaban or placebo for an additional 6-12 months. Symptomatic recurrent VTE occurred in  42 (7.1%) of placebo patients and 8 (1.3%) of rivaroxaban patients, representing a highly significant 82% relative risk reduction. When therapy was stopped, after a mean duration of 190 days, there were 6 new events in each group in the following month.
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AHA: Ken Baughman dies after a traffic accident in Orlando 7

Ken Baughman, 63, has died as a result of a traffic accident on Monday in Orlando, FL. Baughman, the former head of the division of cardiology at Johns Hopkins, was the Director of the Advanced Heart Disease Program at Brigham & Women’s Hospital.
The Boston Globe reports that Baughman was hit by a car at 6 AM while jogging at the intersection of Sand Lake Road and Universal Boulevard in Orlando.

Here are statements from Baughman’s family, the president of Brigham and Women’s Hospital, and from the AHA:
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FDA issues public health advisory on interaction between clopidogrel and omeprazole 2

Updated: The FDA has issued a public health advisory to highlight updated safety information regarding an interaction between clopidogrel (Plavix) and omeprazole. The label change, which was made on Friday, was reported first by CardioBrief yesterday.

An FDA official explained that the label changes were based on data from a new study performed by the sponsor: Here are the study details as written in the new label:
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AHA: 58% survival rate at 2 years with HeartMate II continuous flow LVAD 1

The HeartMate II continuous flow LVAD outperformed its older cousin, the HeartMate XVE pulsatile flow LVAD, according to the results of the HeartMate II Destination Therapy Trial presented today at the AHA and published online in the New England Journal of Medicine.

The trial randomized 200 patients with advanced heart failure who were not eligible for transplantation. The primary endpoint, survival at two years free from disabling stroke or re-operation for device repair or replacement, was reached in 46% of patients who received the continuous flow (CF) device compared to only 11% who received the pulsatile flow (PF) device, a highly significant difference (p<0.001).
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AHA: early repolarization on ECG associated with increased risk of cardiac death Reply

Early repolarization, long thought to be benign, is associated with an increased risk of death from cardiac causes, according to a new study presented here at the AHA and published online in the New England Journal of Medicine. Finnish investigators examined the ECGs of 1,864 middle-aged people to assess the prognostic significance over 30 years of early repolarization (defined as an elevation of the QRS-ST junction– J point– in leads other than V1 through V3).
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Sunday at the AHA: ARBITER’s wild roller coaster ride in Orlando 2

[Updated. See bottom of story for postscript on CNBC TV reporter Mike Huckman’s embargo break.]

The early release of the ARBITER 6 trial on Sunday was a roller coaster ride in more ways than one. In addition to the drama in the newsroom at the AHA as the embargo was lifted, the hastily assembled news conference couldn’t get underway until one very important participant could be summoned from a family outing at Disney’s Animal Kingdom.
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AHA: Niacin to take center stage as it beats ezetimibe in ARBITER 6 5

Following a frenzied build-up (on Wall Street, at least– not so much in the medical community) the results of ARBITER 6 have now been presented at the AHA and published online in the New England Journal of Medicine. The bottom line: niacin but not ezetimibe caused a significant reduction in CIMT.

Although its HDL raising properties have been known for decades, niacin is about to experience its 15 minutes of fame as an overnight success. Whether its fame and notoriety will last longer will depend on more data than ARBITER 6 can provide.
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AHA: Biventricular pacing preserves LV shape and function 1

Biventricular pacing may prevent the adverse left ventricular modeling and reduction in LV function often seen with RV pacing, according to results of the PACE Trial presented at the AHA and published online in the New England Journal of Medicine.

Chinese investigators randomized 177 patients with bradycardia and preserved LV function to biventricular pacing or RV apical pacing. At 12 months, LV EF was 54.8% in the RV pacing group compared to 62.2% in the Biventricular pacing group, a highly significant difference (p<0.001). LV end systolic volume was 35.7ml vs 27.6 ml, a relative difference of 25% that was highly significant.
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AHA: cangrelor fails to find a championship season Reply

Negative results of the CHAMPION PCI and CHAMPION PLATFORM trials have put a damper on hopes for cangrelor, the potent intravenous, reversible platelet blocker under development by the Medicines Company. But investigators say the drug might not have been used properly in the trials, and say they hope to find ways to make use of the drug’s potency and rapid on and off action.

The results of the two trials were presented today at the American Heart Association in Orlando and published simultaneously in the New England Journal of Medicine. These findings follow an announcement last spring that the Medicines Company was discontinuing the CHAMPION clinical trial program.
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AHA: Ticagrelor found beneficial in STEMI subset of PLATO 2

Results from the 8,430 STEMI patients enrolled in the PLATO trial (presented last summer at the ESC and published simultaneously in the Lancet) are consistent with the main 18,000 patient trial and show that ticagrelor reduced the primary endpoint of MI, stroke or vascular death without causing an increase in major bleeding complications when compared to clopidogrel. The trial was presented by Philippe Gabriel Steg at the AHA.
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The empire strikes back: Merck’s Richard Pasternak downgrades ARBITER 6 1

In response to the growing frenzy on Wall Street and in the media over the upcoming presentation of ARBITER 6 on Monday morning, Merck’s Richard Pasternak (formerly a cardiologist at Massachusetts General Hospital) sent a lengthy critique of the trial to CardioBrief (see below). Pasternak also wrote a detailed response to an article about ARBITER 6  in the New York Times and published the letter on Merck’s website.

Whatever else happens with ARBITER 6, Merck says it remains committed to cardiovascular research (unlike some other very large pharmaceutical companies that we won’t mention now). Here’s the press release Merck issued today.
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Editorial: Why ARBITER 6 is important– and not important 1

Arbiter-6 is big news. CNBC will be reporting live from the convention hall on Monday when the results are released. Just in the last day or so the New York Times and the Wall Street Journal have discussed the significance– or lack of it– of the trial. On the one hand, most cardiologists I speak with don’t believe the trial is a big deal. On Wall Street, on the other hand, the feeling is very different, since analysts believe the trial might further threaten the embattled multibillion dollar Vytorin/Zetia franchise (and perhaps give a boost to Abbot’s niacin franchise).

At first glance, ARBITER-6 just isn’t important. From a purely scientific perspective ARBITER 6 doesn’t have much going for it. It’s a small trial with a surrogate endpoint. It won’t definitively answer any relevant clinical questions. So we might actually agree with the Merck PR person who asked CNBC reporter Mike Huckman: “Why are you making this such a big deal? It’s a 200-patient study.”
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