Histatin-5 vs PACAP-38
Head-to-head comparison of Histatin-5 (Human histatin 5) and PACAP-38 (Pituitary Adenylate Cyclase-Activating Polypeptide-38 (human PACAP-38)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Histatin-5 | PACAP-38 |
|---|---|---|
| Category | Dental & Oral | Cognitive Enhancement |
| Full Name | Human histatin 5 | Pituitary Adenylate Cyclase-Activating Polypeptide-38 (human PACAP-38) |
| Molecular Weight | 3035 Da | 4534 Da |
| Half-Life | minutes in saliva | minutes |
| Amino Acids | 24 | 38 aa |
| Typical Dose | 1-100 µM in research formulations | 10-100 µg preclinical range |
| Route | Topical/Oral rinse | Intranasal |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 650 |
| Research Status | Pre-clinical | Pre-clinical |
Histatin-5 Benefits
- ✓anti-Candida activity
- ✓biofilm suppression
- ✓mucosal wound support
- ✓oral innate immunity
PACAP-38 Benefits
- ✓synaptic plasticity
- ✓BDNF upregulation
- ✓neuroprotection
- ✓memory consolidation
Histatin-5 Dosing
topical rinse or gel|short contact exposure|repeat applications in research protocols
PACAP-38 Dosing
0.1-1 nmol ICV in rodents|10-100 µg intranasal in preclinical studies|single-dose or short repeated protocols
Histatin-5 Side Effects
- ⚠local irritation
- ⚠proteolytic instability
- ⚠dose-dependent cytotoxicity in vitro
PACAP-38 Side Effects
- ⚠headache-like effects
- ⚠flushing
- ⚠hypotension
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.
PACAP-38
PACAP-38 is one of the most studied endogenous neuropeptides for protecting neurons from ischemic and excitotoxic damage. Preclinical literature also links it to hippocampal plasticity and learning-related signaling, including increased BDNF expression.
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