B7-33 Peptide Binds The Relaxin Hormone Showing Promising Results In Cardiovascular Problems 

Human relaxin2 is a peptide hormone with pleiotropic effects across most organ systems. In animal models of cardiac ischemia‐reperfusion damage, its recombinant formulation (serelaxin) has been shown to reduce infarction size and prevent excessive scar development. B7-33 is a synthetically produced peptide that communicates with the relaxin family peptide receptor 1 by preferentially phosphorylating the mitogen-activated kinase enzyme 1/2. 

B7-33 was found to bind to the relaxin receptor RXFP1 and activate pathways linked with anti-fibrotic effects in fibroblasts in vitro and in mice and rats’ disease models in vivo, without any side effects. As a result, B7-33 is the most functionally specific single-chain agonist of RXFP1. In simple language, B7-33 6mg is a potent research chemical that has shown promising results in reducing fibrosis in several acute and chronic illnesses such as heart failure, lung disease, and kidney disease. However, only the licensed researcher can buy B7-33

Endogenous receptors for hormone family peptides are separated into two pairs (RXFP1/2 and RXFP3/4). The following is the function of those receptors:

RXFP-1: Affects the motility of sperm cells, pregnancy, tube epithelial tissue, and joint health.

RXFP-2:Is a protein that affects testicular descent.

RXFP-3: Mutations in this receptor have been linked to personality disorder and sleep difficulties.

RXFP-4: The function of this receptor is mostly unknown. It’s known that it’s expressed on sperm cells and that it changes insulin-like peptide 5, which modulates hunger and satiation, signals.


Easily Produced

B7-33 is less difficult to produce and more cost-effective. It is simpler to give a purposeful B7-33 protein than it is to provide a full H2-relaxin protein in the 2nd and 3rd dimensions.


It’s challenging to use the whole relaxin protein as a medicinal treatment. H2-relaxin is difficult to get and can only be supplied via IV injection. It also raises the heart rate and hastens the progression of cancer (particularly prostate cancer). B7-33, the amide, will marginally boost MMP-2 synthesis over H2-relaxin. This significantly lowers cardiac fibrosis and improves cardiac function in rat models of MI-induced heart failure.

Protect Blood Vessels 

Because it protects the vasculature against endothelial tissue disease and long-term scarring, human relaxin-2 (serelaxin) is important. B7-33 mimics the vaso protective effects of serelaxin by raising endothelium-derived hyperpolarization in certain vascular beds and promoting endothelium-dependent relaxation in arteries. 


Even in extreme cases of dominant toxemia of pregnancy, relaxin and B7-33 may be beneficial. B7-33 interacts with the RXFP-1 receptor, allowing VEGF assembly in cytotrophoblasts to be prolonged. These cells, which are located in the developing fetus, are critical for establishing blood flow between the maternal and developing fetus circulations. B7-33 stimulates the development of blood vessels and hence enhances blood supply between mother and child by stimulating VEGF production.

Anti-fibrotic Materials

B7-33 is used in the manufacture of anti-fibrotic materials and materials that resist the foreign body response. Fibrosis makes the implantation of a medical device, such as a cardiovascular stent tube, into the body. Fibrosis will result in degeneration of the implant in these circumstances, which could lead to arterial obstruction, restricted blood supply, and eventually an attack. The B7-33 coating is appropriate for usage in implants.

By reducing cardiomyocyte death and endoplasmic reticulum stress while also preserving internal organ function, B7-33 gives acute cardio protection and reduces cardiac muscle infarction–related unfavorable outcomes in mice.