Histatin-5 vs Met-enkephalin
Head-to-head comparison of Histatin-5 (Human histatin 5) and Met-enkephalin (Tyr-Gly-Gly-Phe-Met) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Histatin-5 | Met-enkephalin |
|---|---|---|
| Category | Dental & Oral | Pain Management |
| Full Name | Human histatin 5 | Tyr-Gly-Gly-Phe-Met |
| Molecular Weight | 3035 Da | 573.67 Da |
| Half-Life | minutes in saliva | 1-5 minutes in plasma |
| Amino Acids | 24 | 5 |
| Typical Dose | 1-100 µM in research formulations | 0.1-5 ug per animal |
| Route | Topical/Oral rinse | Intrathecal / intracerebroventricular |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 1200 |
| Research Status | Pre-clinical | Pre-clinical |
Histatin-5 Benefits
- ✓anti-Candida activity
- ✓biofilm suppression
- ✓mucosal wound support
- ✓oral innate immunity
Met-enkephalin Benefits
- ✓endogenous opioid signaling
- ✓analgesic reference ligand
- ✓spinal antinociception
- ✓neurochemical pain-pathway probe
Histatin-5 Dosing
topical rinse or gel|short contact exposure|repeat applications in research protocols
Met-enkephalin Dosing
Intrathecal 0.1-5 ug per animal|Intracerebroventricular 0.1-2 ug per animal|In vitro 1-100 nM
Histatin-5 Side Effects
- ⚠local irritation
- ⚠proteolytic instability
- ⚠dose-dependent cytotoxicity in vitro
Met-enkephalin Side Effects
- ⚠sedation at higher exposure
- ⚠constipation-like opioid effects
- ⚠rapid enzymatic degradation
Research Overview
Histatin-5
Histatin-5 is a major salivary defense peptide that can kill Candida species and influence oral microbial communities. It is also investigated for wound-healing and xerostomia-associated oral infection models.
Met-enkephalin
Met-enkephalin has been extensively used in receptor pharmacology and nociception studies to map mu and delta opioid biology. The main limitation in translational work is very short half-life from peptidase cleavage and poor systemic stability.
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