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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2005-11-24
pubmed:abstractText
The diabetic heart shows increased fibrosis, which impairs cardiac function. Endothelin (ET)-1 and nuclear factor-kappaB (NF-kappaB) interactively regulate fibroblast growth. We have recently demonstrated that Punica granatum flower (PGF), a Unani anti-diabetic medicine, is a dual activator of peroxisome proliferator-activated receptor (PPAR)-alpha and -gamma, and improves hyperglycemia, hyperlipidemia, and fatty heart in Zucker diabetic fatty (ZDF) rat, a genetic animal model of type 2 diabetes and obesity. Here, we demonstrated that six-week treatment with PGF extract (500 mg/kg, p.o.) in Zucker diabetic fatty rats reduced the ratios of van Gieson-stained interstitial collagen deposit area to total left ventricular area and perivascular collagen deposit areas to coronary artery media area in the heart. This was accompanied by suppression of overexpressed cardiac fibronectin and collagen I and III mRNAs. Punica granatum flower extract reduced the up-regulated cardiac mRNA expression of ET-1, ETA, inhibitor-kappaBbeta and c-jun, and normalized the down-regulated mRNA expression of inhibitor-kappaBalpha in Zucker diabetic fatty rats. In vitro, Punica granatum flower extract and its components oleanolic acid, ursolic acid, and gallic acid inhibited lipopolysaccharide-induced NF-kappaB activation in macrophages. Our findings indicate that Punica granatum flower extract diminishes cardiac fibrosis in Zucker diabetic fatty rats, at least in part, by modulating cardiac ET-1 and NF-kappaB signaling.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0160-2446
pubmed:author
pubmed:issnType
Print
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
856-62
pubmed:meshHeading
pubmed-meshheading:16306813-Animals, pubmed-meshheading:16306813-Body Weight, pubmed-meshheading:16306813-Cell Line, pubmed-meshheading:16306813-Diabetes Mellitus, Type 2, pubmed-meshheading:16306813-Endothelin-1, pubmed-meshheading:16306813-Fibrosis, pubmed-meshheading:16306813-Flowers, pubmed-meshheading:16306813-Gene Expression Profiling, pubmed-meshheading:16306813-Gene Expression Regulation, pubmed-meshheading:16306813-Heart, pubmed-meshheading:16306813-Male, pubmed-meshheading:16306813-Mice, pubmed-meshheading:16306813-Myocardium, pubmed-meshheading:16306813-NF-kappa B, pubmed-meshheading:16306813-Obesity, pubmed-meshheading:16306813-Organ Size, pubmed-meshheading:16306813-Plant Extracts, pubmed-meshheading:16306813-Punicaceae, pubmed-meshheading:16306813-Rats, pubmed-meshheading:16306813-Rats, Zucker
pubmed:year
2005
pubmed:articleTitle
Pomegranate flower extract diminishes cardiac fibrosis in Zucker diabetic fatty rats: modulation of cardiac endothelin-1 and nuclear factor-kappaB pathways.
pubmed:affiliation
Herbal Medicines Research and Education Center, Faculty of Pharmacy A15, The University of Sydney, NSW, Australia.
pubmed:publicationType
Journal Article