Angiotensin II: Role in skeletal muscle atrophy

Claudio Cabello-Verrugio, Gonzalo Córdova, José Diego Salas

Research output: Contribution to journalReview articlepeer-review

40 Citations (Scopus)

Abstract

Skeletal muscle, the main protein reservoir in the body, is a tissue that exhibits high plasticity when exposed to changes. Muscle proteins can be mobilized into free amino acids when skeletal muscle wasting occurs, a process called skeletal muscle atrophy. This wasting is an important systemic or local manifestation under disuse conditions (e.g., bed rest or immobilization), in starvation, in older adults, and in several diseases. The molecular mechanisms involved in muscle wasting imply the activation of specific signaling pathways which ultimately manage muscle responses to modulate biological events such as increases in protein catabolism, oxidative stress, and cell death by apoptosis. Many factors have been involved in the generation and maintenance of atrophy in skeletal muscle, among them angiotensin II (Ang-II), the main peptide of renin-angiotensin system (RAS). Together with Ang-II, the angiotensin-converting enzyme (ACE) and the Ang-II receptor type 1 (AT-1 receptor) are expressed in skeletal muscle, forming an important local axis that can regulate its function. In many of the conditions that lead to muscle wasting, there is an impairment of RAS in a global or local fashion. At this point, there are several pieces of evidence that suggest the participation of Ang-II, ACE, and AT-1 receptor in the generation of skeletal muscle atrophy. Interestingly, the Ang-II participation in muscle atrophy is strongly ligated to the regulation of hypertrophic activity of factors such as insulin-like growth factor 1 (IGF-1). In this article, we reviewed the current state of Ang-II and RAS function on skeletal muscle wasting and its possible use as a therapeutic target to improve skeletal muscle function under atrophic conditions.

Original languageEnglish
Pages (from-to)560-569
Number of pages10
JournalCurrent Protein and Peptide Science
Volume13
Issue number6
DOIs
Publication statusPublished - 2012

Keywords

  • Angiotensin II
  • Angiotensin II receptor type 1 (AT-1)
  • Angiotensin-converting enzyme (ACE)
  • AT-1 receptor blocker (ARB)
  • Atrogin-1
  • MURF-1
  • Skeletal muscle atrophy

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology
  • Medicine(all)

Fingerprint

Dive into the research topics of 'Angiotensin II: Role in skeletal muscle atrophy'. Together they form a unique fingerprint.

Cite this