Research Scientist
Research ScientistiStock

The topic of this article will revolve around ARA-290 peptide and nephrotoxicity studies.

ARA 290, Nephrotoxicity and Inflammatory Cell Death

The results of several studies suggest that ARA 290 may considerably decrease the frequency of micronuclei generated by cisplatin and the DNA damage parameters of the comet test. Furthermore, ARA 290 appeared to enhance antioxidant enzyme levels and decrease MDA/ROS to ameliorate cisplatin-induced oxidative damage in research.

In addition, scientists hypothesize ARA 290 may reduce cisplatin-induced renal inflammation as measured by decreased levels of pro-inflammatory cytokines. Researchers also speculate ARA 290 may protect cells against apoptosis, which cisplatin causes, reducing cell damage.

The gene and protein levels of TNF, IL1, IL6, Caspase-3, and Bax were all speculated to be considerably lower in the ARA 290 plus cisplatin group compared to the cisplatin group, whereas Bcl2 levels were speculated to be significantly higher in both groups.

These results suggested that ARA 290 may have exerted a protective effect on cisplatin-induced nephrotoxicity mostly through its anti-apoptotic, anti-inflammatory, and antioxidant potential. Helix B of erythropoietin (EPO) provides the structural basis for the 11-amino-acid linear nonhematopoietic peptide ARA 290, which may specifically interact with the innate repair receptor (IRR) that mediates tissue protection, rendering the peptide as a possible agent in effective tissue repair. (1)

ARA 290 Peptide and Wounds

Amputation is an extremely expensive complication of diabetic foot ulcers (DFUs), possibly caused by delayed healing and septic manifestation. Erythropoietin is generated and delivered into damaged tissue, activating the innate repair receptor (IRR).

Healing wounds in diabetic test models may be aided by activating the IRR. In this research, specialists looked at how the IRR agonist ARA 290 may affect skin wound healing. This research aimed to examine the efficacy of ARA 290 in a rat model of diabetes caused by incision.

The procedure was repeated every day until day 14, after the wound was first induced. Researchers measured biochemical markers, antioxidant status, and pro-inflammatory cytokines to ascertain wound closure and analyze the characteristics of the healed tissue. Macroscopic, biochemical, immunofluorescent, and molecular techniques could all confirm wound healing activity.

The results suggested that compared to the control group, the group given ARA 290 seemed to manifest significant improvements in wound closure rate, re-capitalization time, collagen, and protein content. While blood glucose and cholesterol levels seemed to have dropped, serum insulin and HDL rose unexpectedly. Reductions in inflammatory cytokines, lipid peroxidation, and increases in antioxidants provided further data of the healing impact. (2)

When compared to both normal control animals (Group I) and the diabetic group (Group II), "the wound contracting capability of experimental rats receiving ARA 290 (Group III and IV) suggested widespread wound recuperation from the 7th day onward." On day 14, wound contraction was considered the greatest in the ARA 290 given animals (Group IV) compared to the other groups. Consequently, the animals given 20% ARA 290 seemed to have a more pronounced impact. (2)

Epithelialization time, total collagen, and total protein content in laboratory mice followed virtually the same pattern throughout the 14 days of the experiment, as suggested by the findings of the wound contraction investigation.

Complete epithelialization took somewhat longer in diabetic control rats (group II) than in normal control animals (group I), the research suggested. However, compared to the diabetic control group (group II), the epithelialization rate of animals given 10% and 20% ARA 290 (groups III and IV) seemed much faster.

Results suggest collagen content appeared significantly lower in diabetic control animals (Group II) compared to normal control animals (Group I). Collagen levels seemed significantly higher in ARA 290 animals (Groups III and IV) compared to diabetic control rats (Group II).

ARA 290 for sale online is restricted to usage in research and educational institutes. Core Peptides is a great resource for licensed researchers looking to purchase peptides for use in laboratory settings. Visit this website to see more. It is illegal to use peptides for personal use, and the compounds are not approved for human or animal consumption. The peptides are strictly available for research purposes.


[i] Ghassemi-Barghi, Nasrin, et al. “Mechanistic Approach for Protective Effect of ARA290, a Specific Ligand for the Erythropoietin/CD131 Heteroreceptor, against Cisplatin-Induced Nephrotoxicity, the Involvement of Apoptosis and Inflammation Pathways.” Inflammation, 10 Sept. 2022,

[ii] Mashreghi, Moeen, et al. “An in Vivo Investigation on the Wound-Healing Activity of Specific Ligand for the Innate Repair Receptor, ARA290, Using a Diabetic Animal Mode.” Europe PMC, 2023,

[iii] Winicki, Nolan M., et al. “A Small Erythropoietin Derived Non-Hematopoietic Peptide Reduces Cardiac Inflammation, Attenuates Age Associated Declines in Heart Function and Prolongs Healthspan.” Frontiers in Cardiovascular Medicine, vol. 9, 18 Jan. 2023,,