Linked Life Data

11914098

Source:http://linkedlifedata.com/resource/pubmed/id/11914098

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-3-26
pubmed:abstractText
The pathway of tissue aldosterone production may exist in the heart, and may be an important contributory factor to myocardial fibrosis and cardiac remodelling in the failing heart. CYP11B2 (aldosterone synthase) catalyses the final step of aldosterone production. The aim of the present study was to determine whether CYP11B2 and CYP11B1 (11beta-hydroxylase) are expressed in myocardial tissues, and whether these enzymes contribute to collagen accumulation and myocardial dysfunction in the failing human heart. Endomyocardial tissues were obtained from 23 patients with chronic heart failure (CHF) and 10 controls. CYP11B2 and CYP11B1 mRNA levels were measured by real-time quantitative reverse transcriptase-PCR. The myocardial collagen volume fraction (CVF) was determined by digital planimetry. CYP11B2 mRNA expression was greater in the CHF group than in the controls (P<0.05), while CYP11B1 mRNA was barely expressed in either group. There was a positive correlation between CYP11B2 mRNA levels and CVF (r=0.64, P=0.001). CYP11B2 mRNA was particularly highly expressed in subgroups of CHF patients with a large left ventricular end-systolic diameter (>55 mm) or a low left ventricular ejection fraction (<30%). CYP11B2 mRNA expression and CVF were lower in a CHF subgroup treated with a combination of spironolactone and angiotensin-converting enzyme inhibitors (ACEIs) than in a subgroup not treated with these drugs. In conclusion, this study has shown that increased myocardial expression of CYP11B2 mRNA is associated with increased myocardial fibrosis and with the severity of left ventricular dysfunction in human CHF. In addition, CYP11B2 expression and cardiac fibrosis are found to be decreased in CHF patients on drug therapy comprising spironolactone combined with ACEIs.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0143-5221
pubmed:author
pubmed:issnType
Print
pubmed:volume
102
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
381-6
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Aldosterone synthase (CYP11B2) expression and myocardial fibrosis in the failing human heart.
pubmed:affiliation
Second Department of Internal Medicine, Iwate Medical University School of Medicine, 19-1 Uchimaru, Morioka 020-8505, Iwate, Japan. m_satoh@imu.ncvc.go.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't