Vergelijking
Calcitonin (Lachs) vs. Semax
Twee peptiden naast elkaar — identiteit, bewijsbasis, juridische status en bekende bijwerkingen.
Identiteit
Categorie
Onderzoek (overig)
Onderzoek (overig)
CAS-nr.
47931-85-1
80714-61-0
Molecuulmassa
3431.85 g/mol
813.92 g/mol
Halfwaardetijd
1 h
0.3 h
Sequentie
Cys-Ser-Asn-Leu-Ser-Thr-Cys-Val-Leu-Gly-Lys-Leu-Ser-Gln-Glu-Leu-His-Lys-Leu-Gln-Thr-Tyr-Pro-Arg-Thr-Asn-Thr-Gly-Ser-Gly-Thr-Pro-NH2Met-Glu-His-Phe-Pro-Gly-ProWerkingsmechanisme
Calcitonin (Lachs)
Salmon calcitonin binds the calcitonin receptor, which is particularly densely expressed on bone-resorbing osteoclasts. The literature describes that receptor activation inhibits osteoclast activity and motility, thereby reducing bone resorption. This results in reduced release of calcium and phosphate from bone into the blood, which is regarded as the mechanistic basis for the calcium-lowering effect. The salmon variant binds the receptor more strongly and for longer than human calcitonin, which explains its higher potency. Central nervous system mechanisms are additionally discussed in relation to its pain effect in fractures, the basis of which is regarded in the literature as not fully elucidated.
Semax
Semax is a tetracosactide fragment analog without hormonal activity at MC2R. Proposed mechanisms include elevation of BDNF and NGF in hippocampus and striatum (in animal models), modulation of dopamine metabolism, and neuroprotective effects via anti-apoptotic pathways. A clear primary receptor is not established.
Bewijsbasis
Hoogste bewijs
Humane RCT
Humane studie
Studies
4
4
waarvan bij mensen
4
2
Geregistreerde effecten
4
3
Openstaande tegenstrijdigheden
1
1
Gedocumenteerde bijwerkingen
2
1
Juridische status
Volledige vermeldingen
Frequently asked questions
- What is the difference between Calcitonin (Lachs) and Semax?
- Calcitonin (Lachs) is classified as "Onderzoek (overig)", while Semax is classified as "Onderzoek (overig)". Calcitonin (Lachs): Salmon calcitonin is a synthetically produced 32-amino-acid peptide hormone that corresponds to the body's own calcitonin but exhibits higher biological potency than the human hormone. In the scientific literature it is studied in the context of inhibiting osteoclast-mediated bone resorption and lowering elevated calcium levels. It was historically broadly approved for the treatment of postmenopausal osteoporosis; following European safety reviews, however, its use was restricted. Semax: Synthetic heptapeptide derived from the N-terminal fragment of adrenocorticotropic hormone (ACTH 4-10). Approved in Russia for ischaemic stroke, cognitive function and ADHD in children. Western phase-3 trials absent. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Calcitonin (Lachs) or Semax?
- The highest available evidence level is "Humane RCT" for Calcitonin (Lachs) and "Humane studie" for Semax. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Calcitonin (Lachs) and Semax in Germany and the United States?
- Duitsland: Calcitonin (Lachs) — Op recept, Semax — Niet goedgekeurd. Verenigde Staten: Calcitonin (Lachs) — Op recept, Semax — Niet goedgekeurd. These are factual summaries with source and review date on the individual pages.