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ACTH(4-10) analogue, Heptapeptide SEMAX
A synthetic heptapeptide analog of ACTH(4-10) that provides nootropic, neuroprotective, and cognitive-enhancing effects by modulating BDNF and neurotransmitter systems.
Tarasov. Vadim V VV; Kudryashov. Nikita V NV; Chubarev. Vladimir N VN; Kalinina. Tatiana S TS; Barre...
The abstract reviews how several antiviral and immunomodulatory drugs affect the brain and immune system, but it doesn’t discuss semax or give any direct tips for biohackers looking to improve longevity, metabolism, or performance.
Kondratieva. D S DS; Afanasiev. S A SA; Usov. V Yu VY; Popov. S V SV
Scientists studied how heart muscle in rats reacts after a simulated heart attack, focusing on how the size of scar tissue affects the muscle's ability to contract stronger after a brief rest. They found that small scars (less than about 37% of the heart wall) didn’t change this response, while large scars (more than about 44%) greatly weakened it.
Sciacca. Michele F M MFM; Naletova. Irina I; Giuffrida. Maria Laura ML; Attanasio. Francesco F
Alzheimer's disease, the most common form of dementia, is characterized by the aggregation of amyloid beta protein (Aβ). The aggregation and toxicity of Aβ are strongly modulated by metal ions and phospholipidic membranes. In particular, Cu<sup>2+</sup> ions play a pivotal role in modulating Aβ aggregation. Although in the last decades several natural or synthetic compounds were evaluated as candidate drugs, to date, no treatments are available for the pathology. Multifunctional compounds able to both inhibit fibrillogenesis, and in particular the formation of oligomeric species, and prevent the formation of the Aβ:Cu<sup>2+</sup> complex are of particular interest. Here we tested the anti-aggregating properties of a heptapeptide, Semax, an ACTH-like peptide, which is known to form a stable complex with Cu<sup>2+</sup> ions and has been proven to have neuroprotective and nootropic effects. We demonstrated through a combination of spectrofluorometric, calorimetric, and MTT assays that Semax not only is able to prevent the formation of Aβ:Cu<sup>2+</sup> complexes but also has anti-aggregating and protective properties especially in the presence of Cu<sup>2+</sup>. The results suggest that Semax inhibits fiber formation by interfering with the fibrillogenesis of Aβ:Cu<sup>2+</sup> complexes.
Hu. Ziyue Z; Lu. Man M; Wang. Xu X; Yang. Wei W; Fan. Yuting Y; Li. Tingting T; Wang. Lu L; Wei. Tin...
The study looked at a new ultrasound technique (3‑D shear wave elastography) to tell if thyroid nodules are cancerous or not. It found that combining this imaging method with existing guidelines improves accuracy, but it has nothing to do with the peptide semax.
Charleston-Villalobos. S S; Cortés-Rubiano. S S; González-Camarena. R R; Chi-Lem. G G; Alj...
The paper compares math tricks for turning chest‑mic recordings of breathing into pictures. It finds the Hermite method works best, but the work is purely about imaging technology, not about any health‑boosting peptide or protocol you can use.
Igarashi. Y Y; Goto. Y Y; Yamada. O O; Ishii. T T; Suga. H H
The study examined how a specific heart measurement (the slope of the end‑systolic pressure‑volume line) changes in isolated dog hearts under different conditions, but it doesn’t provide any direct advice or dosage information for people using the peptide semax or for human health optimization.
Tabbì. Giovanni G; Magrì. Antonio A; Giuffrida. Alessandro A; Lanza. Valeria V; Pappalardo...
Heptapeptide Semax, encompassing the sequence 4-7 of N-terminal domain of the adrenocorticotropic hormone (ACTH) and a C-terminal Pro-Gly-Pro tripeptide, belongs to a short regulatory peptides family. This compound has been found to affect learning processes and to exert marked neuroprotective activities on cognitive brain functions. Dys-homeostasis of metal ions is involved in several neurodegenerative disorders and growing evidences have showed that brain is a specialized organ able to concentrate metal ions. In this work, the metal binding ability and protective activity of Semax and its metal complexes were studied. The equilibrium study clearly demonstrated the presence of three complex species. Two minor species [CuL] and [CuLH-1]- co-exist together with the [CuLH-2]2- in the pH range from 3.6 to 5. From pH5 the [CuLH-2]2- species becomes predominant with the donor atoms around copper arranged in a 4N planar coordination mode. Noteworthy, a reduced copper induced cytotoxicity was observed in the presence of Semax by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay on a SHSY5Y neuroblastoma and RBE4 endothelial cell lines.
Galati. Clelia C; Spinella. Natalia N; Renna. Lucio L; Milardi. Danilo D; Attanasio. Francesco F; Sc...
The paper describes a lab technique that uses special slides and tiny peptide arrays to find small proteins that can stick to the early forms of amyloid‑beta, a molecule linked to Alzheimer’s disease. Semax was only used as a control peptide to test the method, not as a treatment or supplement.
Bekenstein. Jacob D JD
The paper talks about a physics concept: the maximum possible ratio of entropy to energy in a system, showing that classical thermodynamics can set tighter limits than those derived from black‑hole ideas. It does not discuss semax or any health‑related effects.
Kruglikov. R I RI; Orlova. N V NV; Getsova. V M VM
The study looked at how certain brain chemicals (noradrenaline and serotonin) are distributed in the two halves of a rat's brain and how they change when the rats learn a task or are given specific neuropeptides. It found that noradrenaline is naturally higher on the right side, and the tested peptides lowered overall noradrenaline and made the left and right sides more equal, while serotonin stayed the same. These results are specific to rats and do not give clear guidance for human use.
Schuh. F T FT
This paper examined how several muscle‑relaxing drugs used in surgery affect nerve‑muscle signaling and found that their dose‑response relationships don’t follow simple, classic models. The findings are specific to anesthetic practice and don’t provide actionable information for people using semax or other biohacking compounds.
Kurysheva. N I NI; Shpak. A A AA; Ioĭleva. E E EE; Galanter. L I LI; Nagornova. N D ND; Shubin...
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