Nanosensors developed to identify dengue and Zika viruses separately

Thursday, August 6, 2020
Nanosensors developed to identify dengue and Zika viruses separately

Nanosensors developed to identify dengue and Zika viruses separately

  • Rio de Janeiro: A brand new type of nanosensor made of gold can easily identify dengue and Zika viruses. Details of this invention have been published in the research journal "Scientific Reports", which states that nanoparticles have the ability to identify any virus on a nuclear and molecular scale.

  • Scientists at the University of Minas Gerais in Brazil have created these nanoparticles, because Brazil is facing dengue and Zika at the same time. The two viruses belong to the flaviviridae family and, when viewed on amino acid levels, have a 50% similarity. Mosquitoes are the cause of both and can affect humans for a long time.

  • Nanosensors do not require expensive chemicals and ELISA diagnostic tools because both viruses are mostly in poorer countries where resources are severely scarce. These include Pakistan, where the dengue graph rises every year like any other season. Therefore, it is very important to identify both these diseases and viruses.

  • In North and South America alone, 1.8 million dengue cases have been reported this year, of which 4,000 are severe cases and 700 deaths. However, according to the World Health Organization, between 100 and 400 million people are infected with dengue each year.

  • Dengue is a deadly cause of death, but the Zika virus can infect the fetus of a pregnant mother and permanently disable the newborn. Therefore, timely and accurate identification of these two diseases is very important.

  • Experimentally, experts created four different types of nanoparticles to identify the first four types of dengue virus, and each was covered with the corresponding dengue protein. He then applied blood samples using the Alicia Serum technique. Experts note that each of the four types of dengue changed the order of the gold nanoparticles. This made it very easy to identify all types of dengue.

  • The test of gold nanoparticles is very sensitive compared to conventional methods and this low cost sensor is also very easy to manufacture on a large scale. However, this process does not happen automatically and specialists will have to provide special training for which necessary instructions are being formulated.


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