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All Journal Fundamental and Applied Research in Medicine and Allied Sciences Indonesia
Muhammad Nurul Fadel
Universitas Muhammadiyah Kudus, Indonesia

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Optimization and Stability Testing of a Nanostructured Lipid Carrier (NLC)-Based Emulgel System for Transdermal Delivery of Anti-Inflammatory Drugs Muhammad Nurul Fadel; Emma Jayanti Besan; Dzukharian Munandar; Zola Efa Harnis; Indri Dwi Rahasasti
Fundamental and Applied Research in Medicine and Allied Sciences Indonesia Vol. 2 No. 1 (2026): May, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/farmasi.v2i1.522

Abstract

Nanostructured Lipid Carriers (NLC) are second-generation lipid nanoparticles composed of solid and liquid lipids that improve drug loading, stability, and controlled release. Incorporating NLC into an emulgel enhances transdermal drug delivery by improving skin permeation and prolonging drug release. This study aimed to optimize an NLC-based emulgel using Design of Experiment (DoE) and evaluate its physicochemical properties, drug release, skin permeation, and stability. Diclofenac sodium was selected as the model drug. NLC was prepared using melt-emulsification ultrasonication and optimized with a three-factor Box–Behnken design before incorporation into Carbopol 940 gel. Characterization included particle size, zeta potential, entrapment efficiency, viscosity, spreadability, and drug release analysis. The optimized formulation showed a particle size of 187.4 ± 5.2 nm, zeta potential of −32.6 ± 1.8 mV, and entrapment efficiency of 91.3 ± 2.1%. Drug release reached 85.6% within 24 hours following the Korsmeyer-Peppas model. Skin permeation was significantly higher than conventional gel, and the formulation remained stable for six months at 25°C/60% RH.
Formulation Study and Evaluation of the Effectiveness of Natural Polymer-Based Dissolving Microneedles for Model Vaccine Delivery Emma Jayanti Besan; Muhammad Nurul Fadel; Nur Masyithah Zamruddin; Dara Sukma Ratmelya; Yuneka Saristiana
Fundamental and Applied Research in Medicine and Allied Sciences Indonesia Vol. 2 No. 1 (2026): May, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/farmasi.v2i1.524

Abstract

Dissolving microneedle (DMN) arrays made from biocompatible natural polymers offer a promising transdermal vaccine delivery system that can reduce pain, eliminate cold-chain dependence, and minimize the need for trained healthcare workers compared to conventional injections. This study aimed to formulate and characterize natural polymer-based DMNs containing ovalbumin (OVA) as a model antigen and evaluate their immunogenicity in mice. DMNs (F1–F5) were prepared using polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP K30), and hyaluronic acid (HA) at different concentrations through spin-casting into PDMS molds. The formulations were evaluated for morphology, mechanical strength, dissolution time, encapsulation efficiency, antigen release, and immunogenicity in BALB/c mice. The optimized formulation (F4; PVA 15%, PVP K30 10%, HA 1%) showed needle heights of 544.9 ± 15.1 µm, mechanical strength of 0.52 ± 0.04 N/needle, complete dissolution within 15 minutes, and encapsulation efficiency of 94.8 ± 1.8%. Immunogenicity testing demonstrated IgG titers comparable to subcutaneous injection controls. These findings indicate that natural polymer-based DMNs are a promising needle-free and patient-friendly vaccine delivery platform.
Formulation and Characterization of Curcumin-Loaded Microsponge Gel for Controlled Release and Enhanced Stability in Topical Antioxidant Therapy Emma Jayanti Besan; Muhammad Nurul Fadel; Nur Masyithah Zamruddin; Husnunnisa; Cut Intan Annisa Puteri
Fundamental and Applied Research in Medicine and Allied Sciences Indonesia Vol. 2 No. 1 (2026): May, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/farmasi.v2i1.543

Abstract

Curcumin possesses strong antioxidant and photoprotective activities, but its poor aqueous solubility, limited skin penetration, and high photoinstability restrict topical efficacy. This study developed curcumin-loaded microsponges using Eudragit RS100 by the quasi-emulsion solvent diffusion method. The optimized formulation (MS-F5) showed high encapsulation efficiency (91.7 ± 1.6%), porosity (61.3 ± 2.8%), positive zeta potential (+28.3 ± 2.1 mV), and sustained 24-h drug release following Higuchi kinetics (R² = 0.9952). Incorporated into a 2% Carbopol gel, MS-F5 significantly enhanced skin permeation (2.89-fold), epidermal retention (3.52-fold), antioxidant activity (IC₅₀ 12.4 ± 0.8 vs. 18.7 ± 1.2 µg/mL), and photostability (72.4% vs. 18.3%) compared with plain curcumin gel (p < 0.05). Stability studies following ICH Q1A(R2) and Q1B guidelines confirmed acceptable physicochemical and microbiological stability over six months. These findings demonstrate that microsponge technology improves curcumin stability, controlled release, skin delivery, and antioxidant performance, highlighting its potential for dermatological and cosmeceutical applications.
Co-Authors Cut Intan Annisa Puteri Dara Sukma Ratmelya Dzukharian Munandar Emma Jayanti Besan Husnunnisa Indri Dwi Rahasasti Nur Masyithah Zamruddin Yuneka Saristiana Zola Efa Harnis