Navigation Links
A stronger heart with flavonoids
Date:3/19/2008

A polyphenols-rich diet keeps the heart younger. This finding comes out from a study by the University of Grenoble in collaboration with the other Centres participating to the FLORA Project, a European Commission funded research studying the effects of flavonoids, a variety of polyphenols, on human health.

The scientific work, published in the Journal of Nutrition, is one of the few approaching this field by in vivo studies. So far- says Marie-Claire Toufektsian, leading author of the study- the biological and protective activities of various flavonoids have been extensively studied in vitro, on cell- based assays. Nevertheless, this kind of approach has a major limitation: it is extremely difficult to assess precisely the nature of all flavonoids absorbed following consumption of plants present in a given meal. In other words, laboratory cultured cells alone are not sufficient to study a complex mechanism such as that of absorption of food flavonoids. That is why we need to turn attention on other features. The most obvious solution appeared to be to study the effects of this kind of polyphenols on experimental animals. The turning point started from plants: those rich in flavonoids made the case of researchers.

Toufektsian used two kinds of corn: one anthocyanin-free (anthocyanins is a variety of flavonoids) and the other, obtained by the Department of Biomolecular Sciences and Biotechnology of University of Milan through traditional cultivation techniques with no transgenic modifications, rich in anthocyanins. The corn seeds were introduced into a rodent food formula in order to obtain two groups of rats following two different kinds of diet for a couple of months says Chiara Tonelli, head of the Milan group. In the meantime researchers accurately measured the anthocyanins levels in urine and plasma samples from the two groups of rats by using a method developed by the Research Laboratories at the Catholic University of Campobasso. Then researchers studied the onset and evolution of myocardial infarction induced experimentally in both groups.

We found Toufektsian adds that chronic consumption and effective absorption of anthocyanins rendered the rats more resistant to myocardial infarction; in other words, the size of the infarct was significantly reduced in rats fed the anthocyanin-rich diet.

The quantity of absorbed anthocyanins is important too. Maria Benedetta Donati, scientific coordinator of the Research Laboratories of Campobasso, argues that the rats fed the anthocyanin- rich diet received about 13- fold more anthocyanins than most people following a standard Western-type diet, where the daily consumption of flavonoids is relatively low and the average intake of anthocyanins is estimated to be only 12 mg per day.

The Authors turned their attention on Mediterranean diet stressing the crucial difference between this kind of diet and the so called Western Diet, that is rich in fats and poor in fibres. The anthocyanins content of the traditional Mediterranean diet is much higher than that of the Western Diet, which might explain why the Mediterranean diet is cardioprotective says Michel de Lorgeril, cardiologist, head of the Grenoble group.

However promising these results appear to be, researchers go easy on them. The cellular mechanisms of the protection are not clearly determined yet- Toufektsian warns- Moreover, there may be differences between humans and rats, for example in terms of flavonoid absorption and metabolism.

Human volunteers are the target of another phase of the FLORA Project. The Research Laboratories of the Catholic University of Campobasso are studying the process of absorption and metabolism of anthocyanins from blood orange juice- one of the most generous sources of flavonoids- in human body. In this way researchers aim at evaluating how these compounds are absorbed by human body to play their beneficial effects.

The FLORA Project

Funded by the European Commission within the 6th framework program, the FLORA Project aims at gaining further evidence on the dynamics triggered by flavonoids, establishing a forefront in Europe for the study of association among these compounds and cardiovascular disease, myocardial infarction and tumours. FLORA researchers are involved in the field of flavonoids contained in different vegetables, such as corn, tomatoes and an experimental plant called Arabidopsis. Oranges too are other protagonists of this study. They are rich in flavonoids and phenolics by their own nature. FLORAs oranges have something more: the amount of antioxidant has been enriched in order to optimize their natural beneficial effects. Moreover, these fruits are additive free and have been cultivated in full respect of healthy parameters. There is no risk of unexpected surprises but just a measured increase in terms of nutrition. Promoting health through a balanced and correct diet, in respect for different food tradition of European Countries, is the mission of FLORA.


'/>"/>

Contact: Americo Bonanni
bonanni@filemazio.net
39-347-930-5981
Catholic University
Source:Eurekalert

Related biology news :

1. Stronger EPA leadership needed to improve water quality in Mississippi River
2. Layered approach may yield stronger, more successful bone implants
3. New study shows low-fat diets more likely to reduce risk of heart disease than low-carb diets
4. Taking the fight against cancer to heart
5. New book gives a human face to children with congenital heart disease
6. Carbon monoxide may cause long-lasting heart damage
7. Worlds biggest heart model simulated at Université de Montréal
8. Scientists associate 6 new genetic variants with heart disease risk factor
9. Eat less or exercise more? Either way leads to more youthful hearts
10. The construction of heart modelling leads path to new therapies
11. Physician-scientist urges improved drug regulation to ensure heart safety of non-heart drugs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2016)... , Feb. 2, 2016  BioMEMS ... are primarily focused on medical screening and ... point-of-care parameters. Wearable devices that facilitate and ... freedom of movement are being bolstered through ... human biomedical signal acquisition coupled with wireless ...
(Date:2/2/2016)... , Feb. 2, 2016   Parabon NanoLabs ... the U.S. Army Research Office and the Defense ... and sensitivity of the company,s Snapshot Kinship ... Mission and, more generally, defense-related DNA forensics.  Although ... capabilities (predicting appearance and ancestry from DNA evidence), ...
(Date:2/1/2016)... wallet ( www.wocketwallet.com ) announces the launch of a new video featuring ... Las Vegas , where Joey appeared at the Wocket booth ... , where Joey appeared at the Wocket booth to meet and ... at the Consumer Electronics Show (CES2016) in Las Vegas ... fans. --> --> The video ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... ... February 08, 2016 , ... Net-Translators, ... today the launch of its revamped and improved website. In an on-going effort ... the redesigned website will better communicate how the company designs and delivers thorough, ...
(Date:2/9/2016)... ... February 09, 2016 , ... The publishing ... Open Access publishing is one of the popular publication models that has received ... journals and 3000+ International Conferences across the globe, OMICS International ...
(Date:2/9/2016)... , February 9, 2016 Web ... paper and protect IP   E-WorkBook 10 ... rolled out in Germany early this ... valuable IP. Users will be able to search for information ... as part of the application, to boost collaboration and productivity. ...
(Date:2/8/2016)... /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") ... clean technology companies in the TSX Venture 50 TM . ... on the TSX Venture Exchange, in each of five major ... & life sciences, diversified industries and technology – based ... on investment, market cap growth, trading volume and analyst coverage. ...
Breaking Biology Technology: