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[Hormone therapy in heart failure: growth hormone and insulin-like growth factor I]
1Klinik III für Innere Medizin Universitätsklinik Köln.
Insights
Growth hormone (GH) and insulin-like growth factor-I (IGF-I) show potential in improving heart function, despite current heart failure treatments having limitations. This review explores their physiological effects and therapeutic applications for heart conditions.
Area of Science:
- Cardiology and Endocrinology
- Molecular mechanisms of cardiac function
Context:
- Heart disease remains a leading cause of death globally.
- Existing heart failure therapies (ACE inhibitors, beta-blockers) have limited efficacy.
- Growing interest in the role of growth hormone (GH) and insulin-like growth factor-I (IGF-I) in cardiovascular health.
Purpose:
- To review the physiological impacts of GH and IGF-I on the heart muscle (myocardium).
- To elucidate the signal transduction pathways involved in GH/IGF-I action on the heart.
- To summarize current evidence on the therapeutic potential of GH and IGF-I in heart failure.
Summary:
- Studies indicate potential positive hemodynamic effects of GH and/or IGF-I in experimental and human heart failure models.
- Research is exploring how GH and IGF-I influence heart structure and function.
- This review consolidates findings on GH/IGF-I's myocardial effects, signaling, and therapeutic data.
Impact:
- Highlights novel therapeutic targets for managing heart failure.
- Provides insights into the endocrine regulation of cardiac performance.
- Informs future research directions for GH/IGF-I in cardiovascular medicine.
Abstract:
Heart disease is the major cause of mortality in the developed world. Despite recent advances in the therapy of heart failure due to ACE inhibitors and beta-blockers, the prognosis of this syndrome is still poor. In the past few years, the effects of growth hormone (GH) and insulin-like growth factor-I (IGF-I) on heart morphology and function were extensively studied. Some studies dealing with experimental heart failure of animals and one controversial study dealing with human heart failure suggest positive hemodynamic effects of GH and/or IGF-I treatment. This review summarizes the physiological effects of GH/IGF-I on the myocardium, their signal transduction mechanisms, and the data currently available on the therapeutic use of these agents.