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Review
. 2021 Aug 12:8:714567.
doi: 10.3389/fnut.2021.714567. eCollection 2021.

Regulative Mechanism of Guanidinoacetic Acid on Skeletal Muscle Development and Its Application Prospects in Animal Husbandry: A Review

Zhaoming Yan  1 , Zhaoyue Yan  2 , Shuangli Liu  1 , Yunju Yin  1 , Tai Yang  1 , Qinghua Chen  1
Affiliations
Review

Regulative Mechanism of Guanidinoacetic Acid on Skeletal Muscle Development and Its Application Prospects in Animal Husbandry: A Review

Zhaoming Yan et al. Front Nutr. .

Abstract

Guanidinoacetic acid is the direct precursor of creatine and its phosphorylated derivative phosphocreatine in the body. It is a safe nutritional supplement that can be used to promote muscle growth and development. Improving the growth performance of livestock and poultry and meat quality is the eternal goal of the animal husbandry, and it is also the common demand of today's society and consumers. A large number of experimental studies have shown that guanidinoacetic acid could improve the growth performance of animals, promote muscle development and improve the health of animals. However, the mechanism of how it affects muscle development needs to be further elucidated. This article discusses the physical and chemical properties of guanidinoacetic acid and its synthesis pathway, explores its mechanism of how it promotes muscle development and growth, and also classifies and summarizes the impact of its application in animal husbandry, providing a scientific basis for this application. In addition, this article also proposes future directions for the development of this substance.

Keywords: creatine; gene regulate; guanidinoacetic acid; livestock and poultry; muscle development.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
The structure formula of guanidinoacetic acid (GAA).
Figure 2
Figure 2
Guanidinoacetic acid synthesis and metabolism. GAA, guanidinoacetic acid; Cr, creatine; Cr-P, phosphocreatine; SAM, S-adenosyl-methionine; SAH, S-adenosyl-homocysteine; AGAT, L-arginine:glycine amidinotransferase; GAMT, guanidinoacetate N-methyltransferase; CK, creatine kinase; ATP, adenosine triphosphate; ADP, adenosine diphosphate.
Figure 3
Figure 3
Mechanisms of GAA/Cr promoting skeletal muscle development and growth. GAA, guanidinoacetic acid; Cr, creatine; MEF2, myocyte enhancer factor 2 (includes MEF2a, MEF2b, MEF2c and MEF2d); MRFs, myogenic regulatory factors (includes MyoD, Myog, Myf5, MRF4); MSTN, Myostatin; PAX, Pax gene family (includes Pax3 and Pax7); miRNA, MicroRNA (includes miR-133a-3p and miR-1a-3p); AKT, protein kinase B; mTOR, mammalian target of rapamycin; S6K, S6 kinase.
See this image and copyright information in PMC

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