Featured Research

from universities, journals, and other organizations

Negative iron balance predicts acute heart failure survival

Date:
May 17, 2014
Source:
European Society of Cardiology (ESC)
Summary:
Negative iron balance predicts survival in patients with acute heart failure, according to research. “Patients with acute heart failure have a major collapse in homeostasis. Iron is a key micronutrient that is required for the maintenance of homeostasis. Iron is needed for cellular metabolism and deficiency leads to severely impaired energy metabolism and mitochondrial dysfunction,” the first author said.

Negative iron balance predicts survival in patients with acute heart failure, according to research presented for the first time today at the Heart Failure Congress 2014 in Athens, Greece. The Congress is the main annual meeting of the Heart Failure Association of the European Society of Cardiology.

Related Articles


Professor Ewa Jankowska, first author of the study, said: “Patients with acute heart failure have a major collapse in homeostasis. Iron is a key micronutrient that is required for the maintenance of homeostasis. Iron is needed for cellular metabolism and deficiency leads to severely impaired energy metabolism and mitochondrial dysfunction.”

She continued: “Previous studies have shown that patients at high cardiovascular risk – for example diabetics with coronary artery disease or patients with stable chronic heart failure – may develop iron deficiency which leads to recurrent hospitalisations and increased mortality.”

Professor Piotr Ponikowski, last author, said: “We have data showing that iron may be important for clinical outcomes in chronic heart failure and correction of iron deficiency in these patients is beneficial. This is the first study of iron status in acute heart failure.”

Iron deficiency has traditionally been measured using serum ferritin to track iron stores and transferrin saturation (TSAT) to assess iron utilisation in the cell. These measures cannot be reliably interpreted in acute clinical settings because they are influenced by inflammation and oxidative stress.

The researchers therefore proposed a new, more sensitive, measure for acute heart failure which can best characterise iron deficiency in these settings. This refers to both depleted iron stores, measured by circulating hepcidin, and unmet cellular iron needs, measured by soluble transferrin receptor. The receptor is expressed on all cells and enables iron to enter the cell. When there is not enough iron in the cell, the receptor is overexpressed and shed into the circulation. Concomitance of low hepcidin and high soluble transferrin receptor reflects the most severe form of iron deficiency (lack of iron in the body accompanied by iron need), which the investigators called negative iron balance (NIB).

This prospective, observational study included 165 patients hospitalized for acute heart failure. The researchers assessed the prevalence of NIB and its impact on 12 month mortality.

NIB was found in 37% of patients. Just 29% had only high soluble transferrin receptor, while 9% had only low hepcidin and 25% had none of these abnormalities. Twelve month mortality was 20% for the whole group. Patients with NIB had the highest 12 month mortality (41%) compared to those with only high soluble transferrin receptor (15%), only low hepcidin (7%) and none of these abnormalities (0%) (p<0.001). During the hospital stay 3 patients died and all had NIB.

Professor Jankowska said: “Our study shows that deranged iron status is common in acute heart failure. Mortality in the patients with NIB was high during the 12 month follow up, whereas all of the patients with no iron abnormalities survived to one year.”

NIB led to poorer survival in acute heart failure patients regardless of whether they were anaemic or not.

The researchers also measured the standard parameters of iron status, serum ferritin and TSAT, and found that they were less able to predict 12 month mortality than NIB. Levels of serum ferritin and TSAT were only weakly correlated with hepcidin and soluble transferrin receptor.

Professor Ponikowski said: “Levels of hepcidin and soluble transferrin receptor are more clinically relevant in patients with acute heart failure than traditional measures of iron status. We propose a new pathophysiological definition of iron deficiency which accurately reflects stored and utilised iron in patients with acute heart failure.”

Both concluded: “Iron supplementation may reverse NIB and improve survival in acute heart failure patients but this needs to be tested in a randomised clinical trial. We hope to initiate such trial soon.”


Story Source:

The above story is based on materials provided by European Society of Cardiology (ESC). Note: Materials may be edited for content and length.


Cite This Page:

European Society of Cardiology (ESC). "Negative iron balance predicts acute heart failure survival." ScienceDaily. ScienceDaily, 17 May 2014. <www.sciencedaily.com/releases/2014/05/140517085837.htm>.
European Society of Cardiology (ESC). (2014, May 17). Negative iron balance predicts acute heart failure survival. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2014/05/140517085837.htm
European Society of Cardiology (ESC). "Negative iron balance predicts acute heart failure survival." ScienceDaily. www.sciencedaily.com/releases/2014/05/140517085837.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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