Met-enkephalin vs Histatin-5
Head-to-head comparison of Met-enkephalin (Tyr-Gly-Gly-Phe-Met) and Histatin-5 (Human histatin 5) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Met-enkephalin | Histatin-5 |
|---|---|---|
| Category | Pain Management | Dental & Oral |
| Full Name | Tyr-Gly-Gly-Phe-Met | Human histatin 5 |
| Molecular Weight | 573.67 Da | 3035 Da |
| Half-Life | 1-5 minutes in plasma | minutes in saliva |
| Amino Acids | 5 | 24 |
| Typical Dose | 0.1-5 ug per animal | 1-100 µM in research formulations |
| Route | Intrathecal / intracerebroventricular | Topical/Oral rinse |
| Purity | ≥98% | ≥98% |
| Studies Count | 1200 | 120 |
| Research Status | Pre-clinical | Pre-clinical |
Met-enkephalin Benefits
- ✓endogenous opioid signaling
- ✓analgesic reference ligand
- ✓spinal antinociception
- ✓neurochemical pain-pathway probe
Histatin-5 Benefits
- ✓anti-Candida activity
- ✓biofilm suppression
- ✓mucosal wound support
- ✓oral innate immunity
Met-enkephalin Dosing
Intrathecal 0.1-5 ug per animal|Intracerebroventricular 0.1-2 ug per animal|In vitro 1-100 nM
Histatin-5 Dosing
topical rinse or gel|short contact exposure|repeat applications in research protocols
Met-enkephalin Side Effects
- ⚠sedation at higher exposure
- ⚠constipation-like opioid effects
- ⚠rapid enzymatic degradation
Histatin-5 Side Effects
- ⚠local irritation
- ⚠proteolytic instability
- ⚠dose-dependent cytotoxicity in vitro
Research Overview
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.
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.
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