In December 2019, Coronavirus Disease 2019 (COVID-19) was reported in Wuhan, China. Comprehensive strategies for quick identification, prevention, control, and remedy of COVID-19 have been implemented until today. Advances in various nanoparticle-based technologies, including organic and inorganic nanoparticles, have created new perspectives in this field. These materials were extensively used to control COVID-19 because of their specific attribution to preparing antiviral face masks, various safety sensors, etc. In this review, the most current nanoparticle-based technologies, applications, and achievements against the coronavirus were summarized and highlighted. This paper also offers nanoparticle preventive, diagnostic, and treatment options to combat this pandemic. Graphical Abstract

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COVID-19 is an infectious disease caused by a new identified coronavirus in china, There are no efficient treatments for COVID-19. Therefore, it is essential to investigate new therapies for this problem. Due to specific mechanism for inhibition of microbial growth, antimicrobial peptides can be considered as one of the best therapies in this field. Antimicrobial peptides (AMPs) are important agents that are made by the immune system in response to pathogens. This kind of immune response exists in all animal categories from prokaryotes to humans. Different types of AMPs have been identified and isolated from various organisms from bacteria to humans. So far, 190 antiviral peptides with antiviral effects have been extracted and introduced from various animal sources. These natural compounds and their derivatives, e.g. synthetic peptides, can be considered as new therapeutic goals in In this review, we assessed these peptides in different animal categories as well as synthetic peptides and the possibility of using these compounds in the treatment of

In this study, sarcotoxin Pd-functionalized graphene oxide (GO-Pd) was synthesized as a new condom-coating agent. Antimicrobial activity was evaluated by radial diffusion assay (RDA) and absorbance-based methods. Sperm motility and morphology were assessed in different concentrations of designed nanostructures. Peptide stability on the GO structures was assessed by the CD technique. GO-Pd showed the highest contact angle. The results approved that GO-Pd had broad-spectrum antimicrobial activities against examined pathogens, especially vaginal infections such as Candida vulvovaginitis. This antimicrobial activity was more than pristine peptides, vancomycin, and fluconazole. GO-Pd also had a higher inhibitory activity on the sperm motility and viability than pristine peptides. GO-Pd had high stability and activity in all examined conditions. But, naked peptides had low stability and activity after incubation in acidic pH and high temperatures (>38°C). In all tests, GO-Pd showed a significant difference compared to naked peptide. Based on the results, GO-Pd can be used as a condom coating to prevent unplanned pregnancy and sexually transmitted infections.