Related Experiment Video
Updated: Dec 22, 2025

Porcine Corneal Tissue Explant to Study the Efficacy of Herpes Simplex Virus-1 Antivirals
Published on: September 20, 2021
Local anesthetic improves individuals affected with herpes simplex type 1 labialis
Monica Danielle Ribeiro Bastos1, Fellipe Augusto Tocchini de Figueiredo1, Ana Paula Macedo1
1Department of Dental Materials and Prothesis, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil.
A novel in situ film precursor semisolid composition effectively treated herpes simplex labialis (HSL) in 81 patients. This new treatment offers a convenient, cost-effective alternative with faster healing times compared to traditional topical antiretrovirals.
Area of Science:
- Dermatology
- Virology
- Pharmaceutical Sciences
Background:
- Herpes simplex virus 1 (HSV-1) infections, or herpes simplex labialis (HSL), affect approximately 40% of the global population, significantly impacting patient quality of life.
- There is a continuous need for effective therapeutic alternatives to manage HSV-1 infections and their associated complications.
Purpose of the Study:
- To evaluate the therapeutic efficacy of an innovative in situ film precursor semisolid composition for treating herpes simplex lesions caused by HSV-1 in humans.
- To assess the clinical benefits, convenience, and healing time of the novel composition compared to existing treatments.
Main Methods:
- Eighty-one patients diagnosed with HSV-1 were enrolled in the study.
- The in situ film precursor semisolid composition was applied three times within a 24-hour period (T0, T8, T16).
- Clinical assessments, including photographic documentation, were conducted at baseline, 24 hours, and 72 hours post-application, with a 6-month and 1-year follow-up.
Main Results:
- Frequency analysis revealed that 40.3% of patients experienced symptom remission within 24 hours after the final application.
- The film precursor demonstrated significant therapeutic potential and offered an aesthetic advantage over conventional ointments and gels.
- The treatment regimen involved convenient dosing with only three applications in 24 hours.
Conclusions:
- The in situ film precursor semisolid composition shows promise as an effective treatment for herpes simplex lesions.
- This novel formulation offers advantages in terms of dosage convenience, aesthetic appeal, and potentially lower production costs.
- The observed healing times were notably shorter than those reported for topical antiretroviral therapies, suggesting a significant advancement in HSL management.
Related Concept Videos
Local Anesthetics: Common Agents and Their Applications
Cocaine is an ester of benzoic acid and methylecgogine. It is used to anesthetize and vasoconstrict locally. Currently, it is used primarily for topical applications. It is beneficial for surgeries on the upper respiratory tract, providing anesthesia and shrinking the mucosa. Cocaine in the form of cocaine hydrochloride is...
Local Anesthetics: Chemistry and Structure-Activity Relationship
Local Anesthetics: Mechanism of Action
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia
Local Anesthetics: Pharmacokinetics
Local Anesthetics: Differential Sensitivity of Nerve Fibers

