GH/IGF-1 Abnormalities and Muscle Impairment: From Basic Research to Clinical Practice

Area of Science:

• Endocrinology
• Muscle Physiology
• Metabolic Disorders

Background:

• Acromegaly (ACRO) is characterized by excessive growth hormone (GH) and insulin-like growth factor-1 (IGF-1) production.
• Skeletal muscle dysfunction is a significant, yet poorly understood, comorbidity in ACRO, severely impacting patient quality of life.
• The exact mechanisms by which elevated GH and IGF-1 contribute to ACRO-related myopathies remain unclear.

Purpose of the Study:

• To review the current evidence on the roles of GH and IGF-1 in muscle anabolism.
• To specifically examine the impact of these hormones in the context of acromegaly.
• To identify knowledge gaps and suggest future research avenues for understanding and treating ACRO myopathies.

Main Methods:

• Literature review of basic science and clinical studies.
• Analysis of data from cell lines and animal models.
• Synthesis of evidence linking GH and IGF-1 to muscle function in acromegaly.

Main Results:

• GH and IGF-1 play crucial roles in muscle growth and repair.
• Evidence suggests a complex, not fully elucidated, relationship between elevated GH/IGF-1 and muscle impairment in acromegaly.
• Current understanding of therapeutic interventions targeting muscle function in ACRO is limited.

Conclusions:

• Further research is needed to clarify the precise mechanisms of GH and IGF-1 in acromegaly-associated muscle dysfunction.
• Investigating cellular and animal models is essential for bridging knowledge gaps.
• Developing targeted treatments for ACRO myopathies requires a deeper understanding of hormonal influences on muscle anabolism.