Pre- and post-COVID-19: The impact of the pandemic and stock market psychology on the growth and sustainability of consumer goods industries.

The objective of this study is to investigate the impact of the COVID-19 pandemic and stock market psychology on investor investment decisions in different business units operating in the Shandong stock market. The sample size of the study consists of 5,000 individuals from six different business units. The study used the event study statistical technique to analyze the market reaction to newly released information from the stock market perspective to assess whether the number of COVID-19 positive cases impacted it. With a Z score value of 40.345 and a P-value of 0.000, the Wilcoxon test indicated that stock prices before and after the pandemic were quite different. The test showed a positive relationship between the pandemic and the stock market. Further, the results indicated that COVID-19 and stock market psychology had a significant positive impact on investor investment decisions in cosmetic and beauty, consumer household, textiles and apparel, and consumer electronics industries; however, in the sporting and consumer appliance industries, it had an insignificant negative impact. This study serves to guide investors to make suitable changes in their stock market trading practices to counter these challenges to increase their required rate of return from their specific stock market investment. The findings have important insights for various stakeholders including governments, regulatory bodies, practitioners, academia, industry, and researchers.

Targeted Anti-Hepatocellular Carcinoma Research of Targeted Peptides Combined with Drug-Loaded Cell-Derived Microparticles.

To conduct an anti-tumor research by using targeted drug-loaded cell-derived microparticles to target the tumor microenvironment and enhance NK cell killing function. In this experiment, we obtained HepG2 tumor cell-derived microparticles by physical extrusion, high speed centrifugation and filtration, modified the hepatocellular carcinoma targeting peptide SP94 on the surface of microparticles and encapsulated the TGF-ß inhibitor SB505124. Finally we validated and analyzed whether the new drug delivery system can target to tumor site and enhance the anti-tumor function of NK cells. This type of novel targeted cell-derived microparticles drug delivery system will provide a novel idea for tumor immunotherapy.