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5-Aminoimidazole-4-carboxamide ribonucleotide is another name for AICAR peptide. It is an important biological substance known for its function as an AMP-activated protein kinase (AMPK) activator. Since AMPK is a major regulator of cellular energy balance, this activation is essential (1).
By stimulating AMPK, AICAR enhances cellular glucose uptake and increases fatty acid oxidation, making it a valuable tool in metabolic research.
The applications of AICAR extend to potential therapeutic areas, where it is studied for its ability to mimic the effects of exercise, offering hope for treatments for metabolic disorders such as diabetes and obesity and contributing to improved cardiovascular health (2).
Molecular Formula: C9H15N4O8P
Molecular Weight: 338.21 g/mol
Source: PubChem
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Lyphollized peptides have a high solubility in Bacteriostatic Water. View the full range of lab supplies here.
AICAR peptide acts primarily by activating AMP-activated protein kinase (AMPK), a central enzyme in cellular energy regulation. AMPK activation occurs when AICAR is converted into ZMP (5-aminoimidazole-4-carboxamide ribotide) within cells, mimicking AMP’s effect on AMPK.
A series of molecular signalling pathways that improve energy homeostasis are set off by this activation. AMPK specifically increases glucose absorption and fatty acid oxidation to change the cell’s metabolism from energy consumption to energy production. It makes it easier for cells to absorb glucose, which encourages glycolysis and gives them instant energy and stamina (3).
Concurrently, AMPK lowers lipid accumulation by improving fatty acid oxidation, which lowers body fat levels. AICAR is a prospective treatment option for metabolic diseases including obesity and diabetes because of these metabolic changes.
For those who are unable to exercise, AICAR offers therapeutic potential by simulating the effects of exercise, promoting cardiovascular health and the treatment of metabolic illnesses.
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Enhances cellular energy levels
AMP-activated protein kinase (AMPK), a crucial enzyme involved in energy management, is the main way that AICAR raises the body’s energy levels. AICAR mimics the actions of AMP once it is transformed into ZMP inside the cells, which causes AMPK to become active. A number of metabolic alterations that improve energy metabolism are brought on by this activation (1).
Evidence shows that body cells absorb more glucose when AMPK is actived, which in turn boosts glycolysis and speeds up the production of the main energy unit of the cell (ATP). AMPK activation also promotes fatty acid oxidation, which breaks down stored lipids or fat to release more energy. This combination can lead to a leaner body composition by increasing energy levels and decreasing body fat accumulation.
Improves the metabolism
Increased glucose absorption is made possible by the activation of AMPK, which is essential for cellular energy balance.
The overexpression of glucose transporter proteins, including GLUT4, which move to the cell membrane and let more glucose enter the cell, is one important process. This mechanism is essential for improving the absorption of glucose, especially in adipose and muscular tissues. After entering the cell, glucose is broken down by a metabolic process called glycolysis to create the main energy driver of the cell, ATP.
Czech Republic Studies have suggested that AICAR may raise cellular energy levels by improving glycolysis and increasing glucose uptake. This approach can be especially advantageous for metabolic health and may offer therapeutic benefits for diseases where glucose regulation is compromised such as diabetes (4).
Reduces body fat
By activating AMPK, fatty acid oxidation is enhanced, a process in which stored fats are broken down into fatty acids and converted into energy. By promoting the use of fats as an energy source, AICAR shifts energy metabolism from storage to utilization, thereby reducing fat accumulation (5).
Furthermore, by preventing the synthesis of fatty acids and encouraging their breakdown, AMPK activation may have an impact on lipid metabolism. As a result, there is less body fat overall and less lipid storage
Promotes cardiovascular health
In research, AICAR has been shown to enhance endothelial function, which is essential for preserving healthy blood vessels, by activating AMPK. This improvement lowers the risk of hypertension and atherosclerosis by improving blood flow and vascular relaxation.
Additionally, AICAR improves lipid metabolism by boosting fatty acid oxidation, which lowers triglyceride levels and stops dangerous lipids from building up in the blood. A good lipid profile is essential for cardiovascular health, and this procedure aids in maintaining it (5).
Additionally, AICAR helps reduce inflammation, a major contributor to the onset of cardiovascular disease. It reduces the likelihood of artery blockages and plaque formation by reducing inflammatory pathways (6).
Reduces inflammation
AICAR reduces inflammation by activating AMPK, which controls many inflammatory pathways. Inhibiting the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway, which is a major regulator of inflammatory responses, is one such approach (7). AICAR lowers the expression of pro-inflammatory cytokines and mediators, which are frequently increased in inflammation-related diseases, by inhibiting NF-κB activity (8).
Furthermore, AMPK activation modulates other pathways, such as the downregulation of mTOR signalling, which is associated with inflammatory processes. When combined, these activities can reduce chronic inflammation which may offer therapeutic benefits for conditions in which inflammation plays a major role, such as arthritis, metabolic disorders, and cardiovascular diseases.
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Is AICAR approved for human consumption?
The FDA does not currently approve AICAR for therapeutic use. It has been used in limited human investigations but currently remains unapproved for general medical applications.
Why is AICAR called an exercise mimetic?
AICAR is often referred to as an “exercise mimetic” because it may activate some of the same biological pathways that are naturally stimulated during physical exercise. In particular, AICAR activates AMPK, an enzyme that plays a key role in energy production, metabolism, and endurance adaptation within the body.
By influencing these pathways, research has suggested that AICAR may help support mitochondrial activity, fat metabolism, and energy utilisation in a way that resembles certain effects of endurance training. This unique mechanism has made it a significant area of interest in metabolic and performance-related research.
What is the difference between AICAR and AMPK peptides?
AICAR and AMPK peptides are related but distinct in their roles and functions:
AICAR: AICAR (5-Aminoimidazole-4-carboxamide ribonucleotide) is a compound that acts as an activator of AMPK (AMP-activated protein kinase). It mimics AMP by binding to the γ subunit of AMPK, thereby activating the enzyme. This activation helps increase energy availability by promoting the use of fat as an energy source (9).
AMPK: The enzyme AMPK is essential for maintaining cellular energy balance. Low cellular energy levels trigger it, which results in higher energy generation and lower energy consumption. Numerous physiological consequences, such as increased glucose absorption and fatty acid oxidation, are brought on by AMPK activation.
In summary, AICAR is a compound used to activate AMPK, while AMPK is the enzyme that regulates energy balance within cells. Discover the high purity AMPK Peptide here.
Does AICAR influence glucose metabolism?
Czech Republic Studies have looked at how AICAR may impact glucose metabolism by triggering AMPK, a crucial enzyme that controls the metabolism of cellular energy. AICAR may improve overall metabolic function and the body’s use of glucose via activating AMPK.
Although research is still ongoing and findings may differ based on the individual and study conditions, studies have also looked into its possible involvement in energy balance, insulin sensitivity, and metabolic health.
Can AICAR support fat loss?
Research has explored whether AICAR may support fat loss by activating AMPK, a key enzyme involved in energy balance and metabolism. By influencing how the body uses and stores energy, AICAR may help increase fat utilisation and improve metabolic efficiency.
Additionally, studies have looked into how it might support energy expenditure, endurance, and glucose metabolism—all of which, when paired with regular exercise and a healthy diet, may help with body composition and weight management.
(1) Hall DT, Griss T, Ma JF, Sanchez BJ, Sadek J, Tremblay AMK, Mubaid S, Omer A, Ford RJ, Bedard N, Pause A, Wing SS, Di Marco S, Steinberg GR, Jones RG, Gallouzi IE. The AMPK agonist 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), but not metformin, prevents inflammation-associated cachectic muscle wasting. EMBO Mol Med. 2018 Jul;10(7):e8307.
(2) Choksey A, Carter RD, Thackray BD, Ball V, Kennedy BWC, Ha LHT, Sharma E, Broxholme J, Castro-Guarda M, Murphy MP, Heather LC, Tyler DJ, Timm KN. AICAR confers prophylactic cardioprotection in doxorubicin-induced heart failure in rats. J Mol Cell Cardiol. 2024 Jun;191:12-22.
(3) Richter EA, Derave W, Wojtaszewski JF. Glucose, exercise and insulin: emerging concepts. J Physiol. 2001 Sep 1;535(Pt 2):313-22.
(4) Kjøbsted R, Hingst JR, Fentz J, Foretz M, Sanz MN, Pehmøller C, Shum M, Marette A, Mounier R, Treebak JT, Wojtaszewski JFP, Viollet B, Lantier L. AMPK in skeletal muscle function and metabolism. FASEB J. 2018 Apr;32(4):1741-1777.
(5) Gaidhu MP, Frontini A, Hung S, Pistor K, Cinti S, Ceddia RB. Chronic AMP-kinase activation with AICAR reduces adiposity by remodeling adipocyte metabolism and increasing leptin sensitivity. J Lipid Res. 2011 Sep;52(9):1702-11.
(6) Alfaddagh A, Martin SS, Leucker TM, Michos ED, Blaha MJ, Lowenstein CJ, Jones SR, Toth PP. Inflammation and cardiovascular disease: From mechanisms to therapeutics. Am J Prev Cardiol. 2020 Nov 21;4:100130.
(7) Sanduzzi, A., Sanduzzi, A., Ciasullo, E., Capitelli, L., & Bocchino, M. (2020). Alpha-1-Antitrypsin Deficiency and Bronchiectasis: A Concomitance or a Real Association? International Journal of Environmental Research and Public Health, 17(7), 2294.
(8) Staniland AA, Clark AK, Wodarski R, Sasso O, Maione F, D’Acquisto F, Malcangio M. Reduced inflammatory and neuropathic pain and decreased spinal microglial response in fractalkine receptor (CX3CR1) knockout mice. J Neurochem. 2010 Aug;114(4):1143-57.
(8) Višnjić D, Lalić H, Dembitz V, Tomić B, Smoljo T. AICAr, a Widely Used AMPK Activator with Important AMPK-Independent Effects: A Systematic Review. Cells. 2021 May 4;10(5):1095
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