Effects of human recombinant growth hormone on exercise capacity, cardiac structure, and cardiac function in patients with adult-onset growth hormone deficiency

Gonzalez, S.; Windram, J. D.; Sathyapalan, T.; Javed, Z.; Clark, AL; Atkin, S. L.

Abstract

Objective Epidemiological studies suggest that adult-onset growth hormone deficiency (AGHD) might increase the risk of death from cardiovascular causes. Methods This was a 6-month double-blind, placebo-controlled, randomised, cross-over trial followed by a 6-month open-label phase. Seventeen patients with AGHD received either recombinant human growth hormone (rGH) (0.4 mg injection daily) or placebo for 12 weeks, underwent washout for 2 weeks, and were then crossed over to the alternative treatment for a further 12 weeks. Cardiac magnetic resonance imaging, echocardiography, and cardiopulmonary exercise testing were performed at baseline, 12 weeks, 26 weeks, and the end of the open phase (12 months). The results were compared with those of 16 age- and sex-matched control subjects. Results At baseline, patients with AGHD had a significantly higher systolic blood pressure, ejection fraction, and left ventricular mass than the control group, even when corrected for body surface area. Treatment with rGH normalised the insulin-like growth factor 1 concentration without an effect on exercise capacity, cardiac structure, or cardiac function. Conclusion Administration of rGH therapy for 6 to 9 months failed to normalise the functional and structural cardiac differences observed in patients with AGHD when compared with a control group.

Citation

Gonzalez, S., Windram, J. D., Sathyapalan, T., Javed, Z., Clark, A., & Atkin, S. L. (2017). Effects of human recombinant growth hormone on exercise capacity, cardiac structure, and cardiac function in patients with adult-onset growth hormone deficiency. Journal of International Medical Research, 45(6), 1708-1719. https://doi.org/10.1177/0300060517723798

• Journal Article Type: Article
• Acceptance Date: Jul 11, 2017
• Online Publication Date: Aug 31, 2017
• Publication Date: Dec 1, 2017
• Deposit Date: Sep 28, 2017
• Publicly Available Date: Sep 28, 2017
• Journal: Journal of international medical research
• Electronic ISSN: 1473-2300
• Publisher: SAGE Publications
• Peer Reviewed: Peer Reviewed
• Volume: 45
• Issue: 6
• Pages: 1708-1719
• DOI: https://doi.org/10.1177/0300060517723798
• Keywords: Growth hormone, Adult-onset growth hormone deficiency, Hypopituitarism, Cardiac magnetic resonance imaging, Exercise capacity, Cardiac structure, Cardiac function
• Public URL: https://hull-repository.worktribe.com/output/455280
• Publisher URL: http://journals.sagepub.com/doi/10.1177/0300060517723798#articleCitationDownloadContainer
• Additional Information: Copy of article published in: Journal of international medical research, 2017
• Contract Date: Sep 28, 2017