E-ISSN 2218-6050 | ISSN 2226-4485
 

Research Article


Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis

Yuli Nugraeni, Agustine Hanafi Putri, Abdur Razaq Kamaruzzaman, Regina Putri Virigirinia, Rahmavidyanti Priyanto, Wibi Riyawan.


Abstract
Background:
Inflammation of the dental pulp is commonly associated with intense nociceptive signaling mediated by interleukin-1β (IL-1β), Substance P, and neurokinin-1 receptors (NK1-R). Natural compounds, such as Rosmarinus officinalis, contain bioactive molecules that may alleviate this response, particularly when expressed in nanoemulsions that enhance tissue penetration.

Aim:
This study explored the modulatory effect of NE-RO on inflammatory and nociceptive markers in an experimental rat model of acute pulpitis.

Methods:
Thirty healthy male Wistar rats were randomly assigned to six treatment groups, including negative and positive controls, three NE-RO treatment concentrations (0.5, 1.0, and 2.0 mg/ml), and an eugenol comparison group, after 1 week of acclimatization under controlled housing conditions. Pulpitis was induced by lipopolysaccharide application to the exposed pulp chamber. After 24 hours of treatment, the first maxillary molars were processed for immunohistochemical assessment of IL-1β, Substance P, and NK1-R. Data were analyzed using analysis of variance or Kruskal–Wallis tests with a 95% confidence level.

Results:
Induction of pulpitis significantly elevated IL-1β, Substance P, and NK1-R expression relative to the untreated control. The administration of 2 mg/ml NE-RO resulted in marked reductions in the levels of Substance P (5.0 ± 0.40) and NK1-R (5.5 ± 0.29) compared with the positive control (p < 0.05), while IL-1β levels showed a downward trend (4.75 ± 0.48; p = 0.08). These outcomes were comparable to those of eugenol treatment.

Conclusion:
Topical application of 2 mg/ml Rosmarinus officinalis nanoemulsion attenuated neuroinflammatory responses in experimental pulpitis, likely through suppression of the IL-1β–Substance P–NK1-R signaling axis. The findings support its potential as a plant-based alternative topical agent for the management of acute pulpitis, pending further safety evaluation.

Key words: Nanoemulsion; IL-1β; Substance P; NK1-R; Acute pulpitis model.


 
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How to Cite this Article
Pubmed Style

Nugraeni Y, Putri AH, Kamaruzzaman AR, Virigirinia RP, Priyanto R, Riyawan W. Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Vet. J.. 2026; 16(3): 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15


Web Style

Nugraeni Y, Putri AH, Kamaruzzaman AR, Virigirinia RP, Priyanto R, Riyawan W. Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. https://www.openveterinaryjournal.com/?mno=287765 [Access: March 31, 2026]. doi:10.5455/OVJ.2026.v16.i3.15


AMA (American Medical Association) Style

Nugraeni Y, Putri AH, Kamaruzzaman AR, Virigirinia RP, Priyanto R, Riyawan W. Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Vet. J.. 2026; 16(3): 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15



Vancouver/ICMJE Style

Nugraeni Y, Putri AH, Kamaruzzaman AR, Virigirinia RP, Priyanto R, Riyawan W. Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Vet. J.. (2026), [cited March 31, 2026]; 16(3): 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15



Harvard Style

Nugraeni, Y., Putri, . A. H., Kamaruzzaman, . A. R., Virigirinia, . R. P., Priyanto, . R. & Riyawan, . W. (2026) Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Vet. J., 16 (3), 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15



Turabian Style

Nugraeni, Yuli, Agustine Hanafi Putri, Abdur Razaq Kamaruzzaman, Regina Putri Virigirinia, Rahmavidyanti Priyanto, and Wibi Riyawan. 2026. Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Veterinary Journal, 16 (3), 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15



Chicago Style

Nugraeni, Yuli, Agustine Hanafi Putri, Abdur Razaq Kamaruzzaman, Regina Putri Virigirinia, Rahmavidyanti Priyanto, and Wibi Riyawan. "Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis." Open Veterinary Journal 16 (2026), 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15



MLA (The Modern Language Association) Style

Nugraeni, Yuli, Agustine Hanafi Putri, Abdur Razaq Kamaruzzaman, Regina Putri Virigirinia, Rahmavidyanti Priyanto, and Wibi Riyawan. "Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis." Open Veterinary Journal 16.3 (2026), 1578-1589. Print. doi:10.5455/OVJ.2026.v16.i3.15



APA (American Psychological Association) Style

Nugraeni, Y., Putri, . A. H., Kamaruzzaman, . A. R., Virigirinia, . R. P., Priyanto, . R. & Riyawan, . W. (2026) Efficacy of Rosmarinus officinalis nanoemulsion as an anti-inflammatory and antinociceptive agent by targeting the interleukin-1β, substance P, and neurokinin-1 receptor pathways in experimental pulpitis. Open Veterinary Journal, 16 (3), 1578-1589. doi:10.5455/OVJ.2026.v16.i3.15