Category: Peptides Research
Research articles and educational content on peptides and longevity compounds, authored and reviewed by Dr. James, a board-certified neurosurgeon trained at Yale University, and Dr. Tom, a licensed pharmacist. All content is for research and educational purposes only.
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SS-31: Mitochondrial Protection Research and the Science of Cardiolipin Targeting
The mitochondrial inner membrane is one of the most selectively permeable structures in human biology, and SS-31 exploits this specificity in a way that most peptide researchers find worth studying closely. Unlike compounds that bind to surface receptors, SS-31 targets cardiolipin — a phospholipid concentrated almost exclusively in the inner mitochondrial membrane — stabilizing it…
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Thymosin Alpha-1 and Immune System Research: What the Science Shows
Thymosin Alpha-1 and Immune System Research: What the Science Shows Among immune-modulating peptides, thymosin alpha-1 has one of the most compelling research profiles — supported by clinical trial data from multiple countries and a pharmacological mechanism that directly targets T-cell biology. For researchers working in immunology, this peptide offers both mechanistic clarity and substantial human…
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Ipamorelin vs Sermorelin: Comparing Growth Hormone Secretagogues in Research
Ipamorelin vs Sermorelin: Comparing Growth Hormone Secretagogues in Research Growth hormone secretagogue research is often confused by the variety of peptides available with overlapping effects. Ipamorelin vs sermorelin is a comparison that deserves careful mechanistic analysis — because while both stimulate pituitary GH release, they do so through entirely different receptor systems, with different selectivity…
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Epithalon and Telomere Research: What Science Reveals About This Tetrapeptide Bioregulator
Telomerase activation has been a target of longevity research for over three decades, but few compounds have been studied in this context as specifically as Epithalon. This tetrapeptide — Ala-Glu-Asp-Gly — was originally isolated from the bovine pineal gland by Vladimir Khavinson’s group in St. Petersburg, and the research program that followed is one of…
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GHK-Cu: What Research Reveals About Copper Peptide and Tissue Biology
Most peptides interact with a single receptor or pathway. GHK-Cu does something considerably more unusual: research by Loren Pickart and others has demonstrated that this copper-binding tripeptide modulates the expression of over 4,000 human genes, roughly a third of the human genome, by interacting with chromatin remodeling machinery rather than a classical receptor. That breadth…
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Retatrutide: Inside the Research on a Triple Hormone Receptor Agonist
The GLP-1 receptor agonist class transformed metabolic medicine, but the limiting factor was always the ceiling on weight reduction and glycemic control achievable through a single receptor. Retatrutide was designed to test whether adding GIP and glucagon receptor co-agonism could push past that ceiling, and the phase 2 data published in the New England Journal…
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PT-141 and Melanocortin Receptor Research: What the Science Reveals
The melanocortin system is one of the more underappreciated regulatory networks in neuroscience, governing not just pigmentation but energy homeostasis, inflammation, and — through hypothalamic MC3R and MC4R — aspects of autonomic function that researchers have only begun to characterize fully. PT-141 (bremelanotide) enters this system through the same receptor axis used by alpha-MSH, but…
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NAD+ and Mitochondrial Function: What the Research Reveals
NAD+ sits at the intersection of four distinct biological processes that matter enormously for cellular longevity: it is a cofactor for the sirtuin deacetylases, a substrate for PARP-mediated DNA repair, a regulator of the circadian clock through NAMPT, and the central electron carrier in oxidative phosphorylation. What makes the research compelling is not any one…
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TB-500 (Thymosin Beta-4): Understanding Its Role in Cellular Recovery Research
Cell migration is a prerequisite for tissue repair, and most healing peptides influence it indirectly — through growth factor upregulation, inflammatory modulation, or angiogenesis. TB-500 approaches this problem differently. The active region of Thymosin Beta-4, which TB-500 replicates, binds G-actin and sequesters it from polymerization, shifting the equilibrium of the actin cytoskeleton in a way…
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Tirzepatide vs Semaglutide: What the Current Research Shows
The SURPASS and SURMOUNT trial data on tirzepatide arrived at a moment when GLP-1 monotherapy was already considered a major therapeutic advance, and the weight loss numbers from tirzepatide’s phase 3 program — mean reductions of 20-22% of body weight in the highest dose arms — were substantially larger than anything semaglutide had produced. The…
