Objective: This research aims to evaluate the effect of olive oil, tween 60, and span 20 on the physical properties of quercetin nanoemulgel. Methods: In this research, quercetin was formulated into nanoemulgel using a variation of olive oil, tween 60, span 20, and sodium alginate as a gelling agent. The nanoemulgel physical properties (pH, viscosity, and spreadability), stability, and particle size were tested. The data were measured and evaluated using Minitab®18 software; if the p-value<0.05, it is stated that there is a statistically significant difference in the formula. Results: The result showed that tween 60 has the greatest significant impact on pH, viscosity, and transmittance value with a p-value<0.05 for all, meanwhile span 20 has the greatest significant impact on the spreadability of the nanoemulgel preparations with a p-value<0.05 indicating that they are significantly different. Conclusion: This study reported that the effect of olive oil, tween 60 and span 20, with different variations, significantly impacts the physical properties (pH, viscosity, and spreadability) of the nanoemulgel.

Background: Pineapple (Ananas comosus L. Merr) contains a lot of fibre, minerals, and vitamins. Consequently, it has anti-inflammatory, antibacterial, antioxidant, and antidiabetic benefits. Objective: The purpose of this research was to produce pineapple extracts in the form of nano-emulsion gel for more effective use as an antioxidant and anti-acne. Method: The extraction was done by maceration. The resulting extracts were formulated with tween 20 and propylene glycol, while kollisolv PYR served as the oil phase. A nano-emulsion was then formed and formulated into a gel. Result: In this study, the nano-emulsion gel produced was transparent yellowish-white, slightly viscous, with a characteristic odour, a particle size of 10.8 nm ± 0.5, a polydispersity index of 0.239 Ð ± 0.1 and a zeta potential of -33.6 mV ± 1.3. The ability of this nano-emulsion gel to spread was good, 10.28 cm - 14.48 cm, with 1.31 seconds of adhesion and the result of the viscosity test of 3667.4 ± 106.03 cP. In the antioxidant test, the %RSA was produced in the range of 17.70 - 70.32% and the IC50 value was 0.1 µg/mL so it was included in the category of very strong antioxidant. While the anti-acne test has an average bacterial inhibition zone of 10.5 mm ± 0.1 which is in the category of strong anti-acne. Conclusion: It was concluded that pineapple fruit extract with a nano-emulsion gel base can produce good nanoparticle preparations, which have very strong antioxidant and anti-acne activities.

Introduction: Curcumin (Crc) is widely used as an antioxidant and an anti-inflammatory agent. Its low solubility limits its oral bioavailability, thus the need to develop a transdermal nanoformulation of Crc. Aim: This study aimed to obtain the stable formula of Crc-loaded nanoemulgels (Crc-NEGs) possessing good characteristics. Methods: The nanoemulsion (NE) was prepared by titration of the water phase into the mixture of oil, surfactant, and cosurfactant. Crc-NEs optimum formula was obtained by the simplex lattice design (SLD) method. Crc-NEGs were prepared using Carbopol 940 as the gelling agent, and subsequently, its freeze-thaw stability was observed. The ex vivo permeation study of Crc-NEGs was conducted using Franz diffusion cell. Results: The optimum formula of Crc-NEs showed good characteristics in terms of transmittance, particle size, polydispersity index, and zeta potential. Crc-NEGs were found stable through freeze-thaw stability. The ex vivo permeation study illustrated the higher amount of Crc penetrated from NEGs compared to the control (p <0,05). Conclusion: The Crc-NEGs formula has the potential to be the novel effective delivery method of curcumin.

Antimicrobial resistance is now considered a global health problem because it reduces the effectiveness of antimicrobial drugs. According to the World Health Organization (WHO), the highest mortality rate is associated with infections caused by multidrug-resistant microorganisms, with approximately 700,000 deaths worldwide each year. The aim of this study was to determine the potential of C-10 massoia lactone to inhibit the growth of fungi and C. tropicalis biofilm, and molecular docking studies were performed to determine the nature of the inhibition. The study was conducted using the microdilution method for antifungal and antibiofilm testing and designed with a molecular docking approach. Furthermore, an analysis using the scanning electron microscope (SEM) was performed to evaluate the mechanism of effect. The results obtained showed that C-10 massoia lactone can inhibit the growth of fungi by 84.21 w/v. Meanwhile, the growth of C. tropicalis biofilm in the intermediate phase was 80.23 w/v and in the mature phase was 74.23 w/v. SEM results showed that C-10 massoia lactone damaged the EPS matrix of C. tropicalis so that hyphal formation was hindered due to damage to fungal cells, resulting in a decrease in attachment, density, and lysis of C. tropicalis fungal cells. Based on molecular docking tests, C-10 massoia lactone was able to inhibit biofilm formation without affecting microbial growth, while docking C-10 massoia lactone showed a significant binding and has the potential as an antifungal agent. In conclusion, the C-10 massoia lactone compound has the potential as an antibiofilm against C. tropicalis, so it can become a new antibiofilm agent.

Rheumatoid arthritis is the most common autoimmune disease that affects the joints. The cause of the disease is unknown, many studies proposed hypothesis about the etiology of rheumatoid arthritis. The clinical manifestations of arthritis are different in each patients. In addition, the development of the medication is still continue to achieve the most effective role with less side effect. Nanoparticles may be the answer to this problem, since they have been widely used to improve the pharmacokinetic and pharmacodynamics of rheumatoid arthritis drugs. Using nanoparticles-tagged folate or PEG to deliver rheumatoid arthritis drugs may increase the specificity of the drugs to the target and consequently, may decrease the side effects of the drugs. The purpose of this review is to summarize the etiology, clinical manifestation and highlighting the use of nanoparticles in rheumatoid arthritis treatment.

Rheumatoid arthritis (RA) is an autoimmune disease with recurrent bone destruction around the joints that could lead to permanent joint damage. DMARDs (Disease Modifying Anti-Rheumatoid Drugs) and NSAIDs (Non-Steroid Anti-Inflammatory Drugs) are the RA therapies with many side effects on long term use. Based on the ethnomedicine, there are many plants that could be found in Indonesia that contain the potential compounds as alternative RA therapies. The aim of this study is to assess the potential of compounds of various medicinal plants against multiple proteins that play an important role on RA through the molecular docking study and pharmacokinetic prediction. Hesperidin, EGCG (Epigallocatechin gallate), and mangiferin showed higher activity compared to the other compounds against TACE (TNF-α converting enzyme) which play an important role in the inhibition of TNF-α. Inhibition on it could suppress macrophage cell and T-cell activity by suppressing the regulation of cytokine secretion against inflammation. Furthermore, hesperidin, EGCG, and mangiferin did not show effects on CYP450 (cytochrome P450). Modification of drug delivery system must be done to increase the bioavailability of the compounds. It can be concluded that hesperidin, EGCG, and mangiferin are potential to be developed as an RA therapy with a modification of drug delivery system. This study suggest the encapsulation method using liposome as the drug carrier, which is suitable with the charactheristic of hesperidine, EGCG, and mangiferin.