Noni fruit containing polysaccharides, has the potential to be developed into pharmaceutical products such as SPF syrup. The content of noni fruit polysaccharides is known to increase the proliferation of T lymphocyte cells, the regulation of the immune system molecularly, especially with regard to antibodies (IgG), CD4+, and CD8+, is still not widely studied. The aim of this study was to assess the impact of SPF syrup on the modulation of immunoglobulin G (IgG) and T lymphocytes. The study was conducted on female Wistar rats aged 8-9 months, which were given SPF syrup orally at doses of 25, 50, and 100 mg/kgBB for 31 days. Mice were vaccinated against hepatitis B every week. Blood samples were taken on day 31 to measure IgG levels by the ELISA method and T cells (CD4+ and CD8+) by flow cytometry. The results showed that SPF administration had a significant effect on IgG levels (p<0.05), and there were no significant changes in T lymphocyte cells (CD4+, CD8+) (p>0.05). Histopathological examination showed that long-term induction of hepatitis B caused damage to the liver and kidney, but SPF did not affect the condition of these organs. SPF that contains polysaccharides can be an innovative component in immunostimulant formulations.
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