Short-term evaluation of cardiac morphology, function, metabolism and structure following diagnosis of adult-onset growth hormone deficiency

Francesco De Cobelli, Alessandro Rossini, Antonio Esposito, Tamara Canu, Giuseppina Manzoni, Alessandro Del Maschio, Alessandro Rubinacci, Marcella Sirtori, Marco Losa, Roberto Lanzi, Gianluca Perseghin

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: The impact of growth hormone (GH) deficiency of the adult on cardiovascular function remains only partially elucidated. Purpose of this study was to test cardiac function in adult GH deficient patients using cardiac magnetic resonance (CMR). Design: Cardiac magnetic resonance (CMR) techniques, including cardiac 31P MR spectroscopy and evaluation of gadolinium late-enhancement, were applied to assess simultaneously, in a cross-sectional fashion, morphological, functional, metabolic, and structural parameters of the left (LV) and right ventricle (RV) in 15 patients with adult onset GH deficiency. Fifteen healthy individuals served as controls. Results: In GH deficient patients LV systolic function (EF%: 61 ± 1.7 vs 62.1 ± 0.8; p = .44) was not different in spite of a lower LV mass (83.2 ± 5.3 vs 145.3 ± 11.9 g; p = .001), a subclinical impairment of diastolic function (E/A peak ratio: 1.6 ± 0.2 vs 2.1 ± 0.2 p = .05), and a trend for lower PCr/ATP ratio (2.1 ± 0.8 vs 2.3 ± 0.1 p = .07). The RV showed reduced chamber size (end diastolic volume 123.8 ± 9 vs 147.9 ± 7.6 mL; p = .021) with preserved mass. No structural alterations of the LV and RV at late-enhancement were detected in these patients. Conclusions: GH deficient patients represent a unique model of reduced LV myocardial mass in which major structural and metabolic alterations are lacking. Mal-adaptive mechanisms developing in the long term in response to GH deficiency and more severely affecting the LV remain to be elucidated.

Original languageEnglish
Pages (from-to)50-54
Number of pages5
JournalGrowth Hormone and IGF Research
Volume46-47
DOIs
Publication statusPublished - Jun 1 2019

Keywords

  • Diastolic function
  • Gadolinium late-enhancement
  • High energy phosphates
  • Insulin like growth factor 1
  • Phosphorus 31 magnetic resonance spectroscopy

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

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