Abstract. 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.

Kaffir lime oil has many health benefits. However, an obstacle to its commercial use is oxidation during storage. Nanoemulsions (particulate colloidal systems) have been shown to be suitable carriers for lipophilic essential oil constituents due to amphipathic compounds that facilitate solubility. The objectives of this study were to formulate thermodynamically stable kaffir lime oil nanoemulsions and to investigate their physicochemical properties. Air-dried leaves of kaffir lime were subjected to steam distillation to obtain essential oil. Preparation of nanoemulsions was done using the spontaneous emulsification method. Tween 80 and propylene glycol were selected as surfactant mix components. The oil phase consisted of Miglyol 812 as a carrier oil for kaffir lime oil while double-distilled water was used in the aqueous phase. The best formula with transmittance above 95% and highest essential oil content was selected. It contained 20% of Tween 80, 10% of propylene glycol, 1.25% Miglyol 812, and 3.75% kaffir lime essential oil. This formula was then characterized and its thermodynamic stability determined. . The results showed that kaffir lime oil nanoemulsions were thermodynamically stable and robustly withstood variations in temperature, centrifugation, and long-term storage. Additionally, the nanoemulsions had low viscosity, which may facilitate its development as a pharmaceutical compound.

Background: The ageing process (photoaging) can be caused by sun exposure, especially ultraviolet light. Organic and inorganic sunscreen products are commercially available. Two calixarene organic compounds, namely C-phenylcalix[4]resorcinaryl octacinnamate and C-methylcalix[4]resorcinaryl octabenzoate, have been successfully synthesized. Besides, the antioxidant quercetin can be potentially combined with these two compounds since ultraviolet rays also cause reactive oxygen species. This study aimed to evaluate the acute toxicity profile in vitro by cell line Vero and to develop the optimal activity of the product in New Zealand rabbit skin.Methods: Optimal formulation of three formulas nanoemulgel of sunscreen was using  D Optimal Mixture Design. Acute cytotoxicity test in vitro by culture cell line Vero was using randomized post-test only control group design. The activity of the product was measured by the value of Sun Protection Factor (SPF) in vivo using randomized post-test only control group design. Data of acute toxicity in vitro test (IC50 value) was analyzed using probit analysis and activity sun protection factor was analyzed using one-way ANOVA on SPSS version 20 for Windows. Results: The in-vitro toxicity test of formula 1, 2, 3 nanoemulgel were 2,940.569 µg/mL, 13,489.728 µg/mL, and 6,289.248 µg/mL respectively. The formula 1 nanoemulgel sunscreen products were produced with the three highest SPF values. SPF in vivo test showed that the nanoemulgel protection capability of the formula 1 with three different doses were 34; 36; dan 43 respectively. Conclusion: It can be concluded that the nanoemulgel sunscreen products were successfully formulated with high in vivo SPF value and can be potentially developed as organic sunscreens in the future because it is not toxic in culture cell.

Chitosan nanoparticle could become potential formula to protect protein degradation during therapy,since chitosan nanoparticles have “proton sponge hypothesis” mechanism on its protection. Chitosan and pectinis used as basic formula of drug delivery because of its biodegradable and biocompatible properties. Chitosanpectin nanoparticles can be formulated by polyelectrolit complex. EpCAM showed excessive expression inepithelial cancer cells thus can be used as a therapeutic biomarker. MJ protein, a Ribosome-Inactivating Proteins(RIPs) isolated from Mirabilis jalapa L had a higher cytotoxicity on malignant cells than normal cells. MJ proteinneed to be formulated to protect from proteosome degradation in endosome. The aim of this research was todevelop MJ protein-chitosan-pectin nanoparticles and conjugated with anti EpCAM for breast cancer therapy.Mj protein was extracted from M.jalapa leaves. RIPs activity was assayed by supercoiled DNA cleavage. MJprotein were loaded into chitosan nanoparticles using medium viscous chitosan and pectin as cross-linker withpolyelectrolit complex method. Anti EpCAM was conjugated to MJ protein-chitosan-pectin nanoparticles bycarbodiimide reaction and characterized for its entrapment efficiency, morphology by transmission electronmicroscope, particles size, and zeta potential. MJ protein nanoparticles conjugated anti EpCAM and withoutanti EpCAM were cytotoxicity assayed toward T47D and Vero cell lines. MJ protein was able to cleave thesupercoiled DNA into linear and nicked-circular ones. The nanoparticles optimal concentration of mediumviscous chitosan: MJ protein: pectin was 0.01%: 0.01%: 1% (m/v). A high entrapment efficiency of MJ proteinnanoparticles was 98.97 ± 0.07%. Morphology nanoparticles showed an amorphic structure with 200.00 nmparticles size. The nanoparticles conjugated anti EpCAM showed average particles size 367.67nm, polydispersityindex 0.332, and zeta potential +39.97mV. MJ protein-chitosan-pectin nanoparticles conjugated anti EpCAMand unconjugated both had higher cytotoxicity with the IC50 57.64 μg/mL and 46.84 μg/mL respectivelyagainst T47D and 99.38 μg/mL and 111.34 μg/mL against Vero cell lines compared to MJ protein with IC50 of3075.61 μg/mL against T47D and 3286.88 μg/mL against Vero cell lines. Both MJ protein-nanoparticles couldincrease the cytotoxicity effects about 50 times compared to the unformulated MJ protein activity, howeverhad less specificity toward T47D and Vero cell lines.

Background: Carbamazepine is an antiepileptic drug used to treat trigeminal neuralgia and pain associated with neurological disorders. The drug belongs to class II of the Biopharmaceutical Classification System (BCS), which has low solubility. Hence, dissolution is a rate-limiting step. Objective: This study aimed to determine the best formula for carbamazepine nanoparticles based on physical characteristics and determine the effect of chitosan and Na-TPP concentration variation on nanoparticle characterization. Methods: The carbamazepine chitosan nanoparticles were prepared using ionic gelation method with a concentration of 0.1% w/v carbamazepine and the ratio of chitosan and Na-TPP concentrations of 0.2%:0.1% (F1), 0.2%:0.2% (F2), and 0.3%:0.1% w/v (F3). The parameters evaluated included particle size, polydispersity index, zeta potential, particle morphology, and entrapment efficiency. Statistical analysis was conducted on the evaluation data using One Way ANOVA. Results: The results showed that the effect of increasing the concentration of chitosan reduced particle size (p<0.05), increased zeta potential (p<0.05), and had no effect on the value of entrapment efficiency (p>0.05). Furthermore, F3 had a particle size of 169.8±13.71 nm with a polydispersity index of 0.378±0.02, the zeta potential of +28.80±2.44 mV, entrapment efficiency of 84.3±7.50%, and spheric particle morphology which was measured using Transmission Electron Microscope (TEM). Conclusion: Therefore, F3 with the ratio of chitosan and Na-TPP concentrations of 0.3%:0.1% was the formula that provided the best characteristics of chitosan carbamazepine nanoparticles.