Document Detail

High blood pressure-lowering and vasoprotective effects of milk products in experimental hypertension.
MedLine Citation:
PMID:  21736845     Owner:  NLM     Status:  Publisher    
Milk casein-derived angiotensin-converting enzyme (ACE)-inhibitory tripeptides isoleucine-proline-proline (Ile-Pro-Pro) and valine-proline-proline (Val-Pro-Pro) have been shown to have antihypertensive effects in human subjects and to attenuate the development of hypertension in experimental models. The aim of the present study was to investigate the effect of a fermented milk product containing Ile-Pro-Pro and Val-Pro-Pro and plant sterols on already established hypertension, endothelial dysfunction and aortic gene expression. Male spontaneously hypertensive rats (SHR) with baseline systolic blood pressure (SBP) of 195 mmHg were given either active milk (tripeptides and plant sterols), milk or water ad libitum for 6 weeks. SBP was measured weekly by the tail-cuff method. The endothelial function of mesenteric arteries was investigated at the end of the study. Aortas were collected for DNA microarray study (Affymetrix Rat Gene 1.0 ST Array). The main finding was that active milk decreased SBP by 16 mmHg compared with water (178 (sem 3) v. 195 (sem 3) mmHg; P < 0·001). Milk also had an antihypertensive effect. Active milk improved mesenteric artery endothelial dysfunction by NO-dependent and endothelium-derived hyperpolarising factor-dependent mechanisms. Treatment with active milk caused mild changes in aortic gene expression; twenty-seven genes were up-regulated and eighty-two down-regulated. Using the criteria for fold change (fc) <  0·833 or > 1·2 and P < 0·05, the most affected (down-regulated) signalling pathways were hedgehog, chemokine and leucocyte transendothelial migration pathways. ACE expression was also slightly decreased (fc 0·86; P = 0·047). In conclusion, long-term treatment with fermented milk enriched with tripeptides and plant sterols decreases SBP, improves endothelial dysfunction and affects signalling pathways related to inflammatory responses in SHR.
Pauliina I Ehlers; Anne S Kivimäki; Anu M Turpeinen; Riitta Korpela; Heikki Vapaatalo
Related Documents :
8668865 - Role of dietary factors in the hypertension of african americans.
18086955 - Relation of dietary salt and aldosterone to urinary protein excretion in subjects with ...
6546185 - The effects of hydrogen-ion concentration on the respiratory efficiency of human liver ...
2839625 - Increase in plasma ouabainlike inhibitor of na+, k+-atpase with high sodium intake in p...
5145725 - Cardiovascular reflex responses to cutaneous and visceral stimuli in spinal man.
1447075 - Retrofacial lesions: effects on co2-sensitive phrenic and sympathetic nerve activity.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-10
Journal Detail:
Title:  The British journal of nutrition     Volume:  -     ISSN:  1475-2662     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-7-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-11     Citation Subset:  -    
Institute of Biomedicine, Pharmacology, University of Helsinki, PO Box 63, 00014 University of Helsinki, Finland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Lupin and soya reduce glycaemia acutely in type 2 diabetes.
Next Document:  Intake of ?-linolenic acid and other fatty acids in relation to the risk of bladder cancer: results ...