HNP-1 vs HBD-3
Head-to-head comparison of HNP-1 (Human Neutrophil Peptide 1 (Alpha-Defensin 1)) and HBD-3 (Human Beta-Defensin 3) — benefits, dosing, side effects, research data, and where to buy.
| Property | HNP-1 | HBD-3 |
|---|---|---|
| Category | Immune Support | Immune Support |
| Full Name | Human Neutrophil Peptide 1 (Alpha-Defensin 1) | Human Beta-Defensin 3 |
| Molecular Weight | 3443 Da | 5158 Da |
| Half-Life | Minutes to hours; protease-sensitive | Minutes to hours; protease-sensitive |
| Amino Acids | 30 | 45 |
| Typical Dose | Research use only; no approved human dose | Research use only; no approved human dose |
| Route | Topical / Research parenteral | Topical / Intranasal / Research parenteral |
| Purity | ≥98% | ≥98% |
| Studies Count | 610 | 380 |
| Research Status | Pre-clinical | Pre-clinical |
HNP-1 Benefits
- ✓neutrophil-derived antimicrobial defense
- ✓broad pathogen killing
- ✓immune cell signaling
- ✓mucosal protection
HBD-3 Benefits
- ✓strong antimicrobial activity
- ✓skin and mucosal defense
- ✓innate immune signaling modulation
- ✓wound-healing support
HNP-1 Dosing
0.1–10 µM in vitro|1–5 mg/kg in animal models|No established human dose
HBD-3 Dosing
0.1–10 µM in vitro|1–5 mg/kg in animal models|No established human dose
HNP-1 Side Effects
- ⚠membrane toxicity at high concentrations
- ⚠short in vivo stability
- ⚠potential inflammation amplification
HBD-3 Side Effects
- ⚠cell toxicity at high concentrations
- ⚠rapid proteolysis
- ⚠inflammatory activation in some contexts
Research Overview
HNP-1
HNP-1 has been studied as a key component of neutrophil-mediated host defense against bacteria, fungi, and some enveloped viruses. Literature also reports immunomodulatory effects, including impacts on chemotaxis, cytokine release, and barrier defense.
HBD-3
Human beta-defensin 3 has been examined in numerous in vitro and animal studies for antimicrobial and immunomodulatory activity. Research suggests it can help defend barrier tissues while influencing cytokine networks, chemotaxis, and epithelial repair.
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