Immunostimulating Activity of Sungkai Leaf Stigmasterol Isolate against Cluster Differentiated 8+ T (CD8+T) from Covid 19 Disease Exposure

Abstract

Objective: Covid 19 is a disease that infects cells in the airway lining the alveoli. This disease is caused by a virus named SarsCoV2. One way to handle it is to increase immunity. The body itself consists of immune system organs. One component of the immune system that is very important in protecting the body against the SARS-Cov-2 virus attack is Cluster of Differentiation 8+ T (CD8+T). CD8+T is one of the components of the adaptive immune system or often known as the specific immune system and is cytotoxic, so it is called Cluster of Differentiation8 +T. One of the plants used by the community to increase endurance is Sungkai (Peronema canescens Jack.). This study aims to see its activity against Cluster of Differentiation 8+ T (CD8+T). Methods: Sungkai leaf powder was extracted using 70% ethanol solvent and evaporated using a rotary evaporator to obtain ethanol extract and fractionated with n-hexanes and isolated to obtain active isolates of sungkai leaves against the immune system. Isolates obtained from the isolation of the active fraction of n hexanes that have been tested as immunostimulants in previous studies. This study used test animals, namely male white mice of the wistar strain as many as 30 mice consisting of 5 heads for each group. Group I is a control group that is not given treatment and groups II, III, IV, V and VI are given exposure to the Sars CoV2 virus antigen that causes Covid 19 disease, namely using one of the Covid19 vaccines, namely the 0.0013 mL Moderna vaccine which is given Intra Muscular. Groups II, III, IV, V are treatment groups induced with Sars CoV2 antigen and given a test preparation, namely sungkai leaf isolate with 3 dose variations, namely 1, 10 and 100 mg/kg bw given orally, and group VI was given stimuno 50 mg/kgbw as a comparison. Results: From the results of immunostimulant testing of sungkai leaf isolate, it was found that stigmasterol has an immunostimulant effect in increasing Cluster of Differentiation 8 + T (CD8 + T) in the body given SARS-CoV-2 virus antigen. Significant results were seen in the 100 mg/kg bw dose group which increased CD8+T by 53.93 ng/dl. Based on statistical tests conducted in the form of ANOVA tests, CD8+T also showed significant differences with a significance value of <0.05. Conclusion: Stigmasterol isolate of sungkai leaf has the effect of increasing Cluster of Differentiation 8+ T (CD8+T) levels in the body given exposure to SARS-CoV 2 virus antigens. Key words: SARS-CoV-2, Sungkai, Cluster of Differentiation 8+ T (CD8+T), Stigmasterol, Immunostimulant.