This current study aims to optimize, characterize, and observe the stability of the self-nano emulsifying drug delivery system (SNEDDS) of propolis extract (PE) for improving the immune response. Optimization of the selected composition of SNEDDS was conducted using a D-optimal mixture design. SNEDDS was prepared by loading 150 mg/mL of PE in oil, surfactant, and cosurfactant phases. The thermodynamic stability test was carried out with phase separation parameters followed by the robustness to dilution and accelerated stability test. The immunostimulant activity was examined in vitro and in vivo by determining the phagocytic activity, cell proliferation, production of nitrite oxide levels of RAW 264.7 cells, phagocytic activity of macrophages, and the number of leukocytes, neutrophils, and lymphocytes. The formula optimization showed that the formula containing Capryol-90, Cremophor RH40, and PEG 400 at a ratio of 30: 34: 36 was optimum. The verification response of the optimum formula with drug loading showed that the transmittance, droplet size, and zeta potential were 96.90 ± 0.00%, 28.7 ± 1.20 nm, and −56.5 ± 2.05 mV, respectively. The thermodynamic stability test and robustness to dilution did not find any separation phase. The accelerated stability test results were classified as stable. The in vitro and in vivo immunostimulant activity test showed that PE-loaded SNEDDS exhibited a higher immunostimulant effect than PE. In conclusion, the optimum and stable composition of PE loaded SNEDDS was found with a simple and accurate method using the D-Optimal mixture design and demonstrated an immunostimulant activity.
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.
Abstract.The immune system is a combination of cells, molecules, and tissues that play a role in preventing, detecting and eliminating a pathogen that enters the body. Indonesian society, hereditary and traditionally used medicinal plants (herbs) to increase immunity or immune system that fight the bacterias and pathogens. This paper aims to review the potential plants for immunomodulator from Borneo Island and the prospect to be developed as nanomedicines. The review is made using online and offline literature. Based on the literature, the immune system can be improved by various compounds from plants such as bawang dayak (Eleutherine palmifolia (L) Merr), kelakai (Stenochlaena palustris (Burm.f) Bedd), pasak bumi (Eurycoma longifolia Jack), kasturi (Mangifera casturi Kosterm.), binjai (Mangifera caesia), ramania (Bouea macrophylla Griff), gerunggang (Cratoxylum arborescens (Vahl) Bl) and akar kuning (Fibraurea chloroleuca Miers). In general, the mechanism of the plants to improve the immune system is by facing the cause of the disease directly as an effector and also work by regulating immunity. The medicinal plants also have prospects to be developed as nanomedicines.
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