Featured Research

from universities, journals, and other organizations

Cardiac Stent Patients With Diabetes May Benefit From Drug That Counteracts Effects Of Leptin

Date:
December 17, 2008
Source:
Columbia University Medical Center
Summary:
The naturally high levels of leptin in diabetic patients may reduce the effectiveness of drug-eluting stents used to treat heart blockages, but using a chemical that differs from the one commonly used to coat stents could counteract this effect. New research could potentially improve outcomes in diabetics who get stents. Though drug-eluting stents reduce the chance coronary arteries will become blocked again, clogged stents are still more common in diabetic patients than in the general population.

The naturally high levels of leptin in diabetic patients may reduce the effectiveness of drug-eluting stents used to treat heart blockages, but using a chemical that differs from the one commonly used to coat stents could counteract this effect.

The work by researchers at Columbia University Medical Center could potentially improve outcomes in diabetics who get stents, they say. Though drug-eluting stents reduce the chance coronary arteries will become blocked again, clogged stents are still more common in diabetic patients than in the general population. About 250,000 Americans with diabetes receive drug-eluting stents every year.

A hormone commonly associated with obesity – leptin – may be partly responsible, according to recently published research in the Proceedings of the National Academy of Sciences by Andrew Marks, M.D., chair of physiology & cellular biophysics and Clyde and Helen Wu Professor of Molecular Cardiology, and Steven Marx, M.D., associate professor of medicine and pharmacology. The study found that leptin, at the elevated concentrations frequently found in patients with diabetes, stimulates the growth of cells responsible for clogging the stents in mice, even in the presence of sirolimus, a drug used in many stents to prevent cell growth.

The same mouse study also identified a drug – a PI3kinase inhibitor – that counteracts the effect of leptin on cell growth. If added to current drug-eluting stents, such a drug may further reduce reclogging rates in patients with diabetes to the single digit rates seen in other patients. An improved stent could significantly reduce the numbers of patients who eventually need coronary bypass surgery after their stents become severely obstructed.


Story Source:

The above story is based on materials provided by Columbia University Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Columbia University Medical Center. "Cardiac Stent Patients With Diabetes May Benefit From Drug That Counteracts Effects Of Leptin." ScienceDaily. ScienceDaily, 17 December 2008. <www.sciencedaily.com/releases/2008/12/081217190431.htm>.
Columbia University Medical Center. (2008, December 17). Cardiac Stent Patients With Diabetes May Benefit From Drug That Counteracts Effects Of Leptin. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2008/12/081217190431.htm
Columbia University Medical Center. "Cardiac Stent Patients With Diabetes May Benefit From Drug That Counteracts Effects Of Leptin." ScienceDaily. www.sciencedaily.com/releases/2008/12/081217190431.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins