Document Detail


Cardiac function in growth hormone deficient patients before and after 1 year with replacement therapy: a magnetic resonance imaging study.
MedLine Citation:
PMID:  20730514     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Assessed by conventional echocardiography the influence of growth hormone deficiency (GHD) and effects of replacement therapy on left ventricle (LV) function and mass (LVM) have shown inconsistent results. We aimed to evaluate cardiac function before and during replacement therapy employing the gold standard method cardiac magnetic resonance imaging (CMRI) and measurements of circulating levels of B-type natriuretic peptides. Sixteen patients (8 males and 8 females, mean age 49 years (range 18-75)) with severe GHD and 16 matched control subjects were included. CMRI was performed at baseline and after 1 year of GH replacement therapy. IGF-I, B-type natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) were measured after 0, 1, 2, 3, 6 and 12 months of treatment. IGF-I Z-score increased from (median (IQR)) -2.3 (-3.8 to -1.4) to 0.5 (-0.3 to 1.7). LVM index (LVMI), ejection fraction (range 63-80%), cardiac output index and levels of BNP and NT-proBNP were similar at baseline in patients compared to controls (P-values from 0.09 to 0.37). The patients had significantly smaller LV end-diastolic volume index (P = 0.032) and end-systolic volume index (P = 0.038). No significant change in LV systolic function or LVM occurred during 1 year of GH treatment. BNP levels were unchanged (P = 0.88), whereas NT-proBNP tended to decrease (P = 0.052). Assessed by the highly sensitive and precise CMRI method, untreated GHD was not associated with impaired systolic function or reduced LVMI and 1 year of GH replacement using physiological doses did not influence cardiac mass or function.
Authors:
Mikkel Andreassen; Jens Faber; Andreas Kjær; Claus Leth Petersen; Lars Ostergaard Kristensen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pituitary     Volume:  14     ISSN:  1573-7403     ISO Abbreviation:  Pituitary     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9814578     Medline TA:  Pituitary     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1-10     Citation Subset:  IM    
Affiliation:
Department of Endocrinology, Endocrine Research Laboratory 54o4, Herlev Hospital, University of Copenhagen, Herlev Ringvej 75, 2730, Herlev, Denmark, andreassenmikkel@hotmail.com.
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