Sarcopenia, cachexia, and muscle performance in heart failure: Review update 2016

Area of Science:

• Cardiology
• Physiology
• Biochemistry

Background:

• Cardiac cachexia is progressive weight loss in heart failure (HF) patients.
• It results from an imbalance in muscle protein synthesis and degradation, leading to muscle wasting.
• This muscle wasting impairs functional capacity in HF patients.

Purpose of the Study:

• To highlight the lack of effective therapeutic strategies for muscle wasting in HF patients.
• To emphasize the need for novel animal models to study cardiac cachexia.
• To improve understanding of the pathological mechanisms and therapeutic approaches for cardiac cachexia.

Main Methods:

• Review of current understanding of cardiac cachexia mechanisms.
• Discussion of exercise as a potential intervention.
• Identification of limitations in existing animal models.

Main Results:

• Muscle wasting in HF is linked to impaired protein homeostasis.
• Exercise training shows promise in preventing or reversing muscle wasting.
• Current animal models are insufficient for studying cardiac cachexia.

Conclusions:

• Effective therapeutic strategies for cardiac cachexia are lacking.
• Development of improved animal models is crucial for understanding cardiac cachexia.
• Better models will advance research into muscle wasting pathways and therapeutics.