Temporin A
Also known as: Temporin-1A, Frog antimicrobial peptide
A small frog-derived antimicrobial peptide with potent activity against Leishmania and other parasites.
Overview
Temporin A is a 13-amino acid antimicrobial peptide isolated from the European red frog (Rana temporaria). Despite its small size, it demonstrates remarkable antiparasitic activity, particularly against Leishmania species responsible for leishmaniasis, a neglected tropical disease.
Mechanism of Action
Temporin A forms an alpha-helical structure that inserts into parasite membranes. Its small size allows rapid membrane penetration. It targets both the plasma membrane and internal organelle membranes, including mitochondria, leading to apoptosis-like death in parasites.
Pharmacokinetics
Small size enables rapid tissue penetration. More resistant to certain proteases than larger AMPs. Can cross biological barriers effectively.
Dosing Protocols
Note: These are research protocols from literature. This is not medical advice.
Research Protocol
10-50 mcg/mL topical
1-2x daily
2-4 weeks
For cutaneous leishmaniasis research
Stacking Recommendations
Peptides that may be combined based on complementary mechanisms in research settings.
Rationale: Enhanced antimicrobial coverage
Synergy: Different size peptides target different membrane regions
Research Areas
Key Research Findings
- 1Highly effective against Leishmania infantum and L. major promastigotes and amastigotes
- 2IC50 values in low micromolar range against multiple Leishmania species
- 3Induces mitochondrial dysfunction and apoptosis in parasites
- 4Active against drug-resistant Leishmania strains
- 5Synergistic with standard leishmanicidal drugs (amphotericin B, miltefosine)
Side Effects & Contraindications
Reported Side Effects
- Local irritation
- Mild erythema
Contraindications
- Frog peptide sensitivity
- Application to large wound areas
Safety Considerations
Research compound. Shows selectivity for parasite over host cells but high doses may cause hemolysis.
Storage Requirements
Store lyophilized at -20°C. Light sensitive.
Scientific References
- 1Temporins, antimicrobial peptides from the European red frog with antiparasitic activity
Mangoni ML, et al.
Biochimica et Biophysica Acta, 2005
- 2Antileishmanial activity of temporin family peptides
Chadbourne FL, et al.
Antimicrobial Agents and Chemotherapy, 2011