Seaweed Stops COVID Virus Infecting Human Cells

Edible marine algae substance was found to stop the spread of coronavirus, revealed study. The cells were exposed to both the coronavirus and to ulvan.

Edible marine algae substance was found to stop the spread of coronavirus, revealed study.

"The lack of access to vaccines takes the lives of many victims and even accelerates the creation of new variants," said TAU's Prof. Alexander Golberg.

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The major water-soluble polysaccharide extracted from the cell wall of green seaweed, could help stop coronavirus from infecting human cells.

"The study is still in its early stages, but we hope that the discovery will be used in the future to develop an accessible and effective drug, preventing infection with the coronavirus. Our findings at this stage arouse cautious optimism," he added in the study published in PeerJ -- a peer-reviewed science journal.

Because other research showed that certain seaweed compounds had antiviral properties, the team decided they wanted to evaluate them against Covid.

They then decided to test ulvan because it could be extracted from common seaweed.

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"Ulvan is extracted from marine algae called Ulva, which is also called 'sea lettuce', and is food in places like Japan, New Zealand and Hawaii," Golberg said. "It has previously been reported that ulvan is effective against viruses in agriculture and also against some of the human viruses - and when coronavirus arrived, we asked to test its activity."

They grew Ulva algae, extracted the ulvan from it and sent it to the Southern Research Institute in Alabama. There, the US team built a cellular model to assess the activity of the substance produced in Golberg's laboratory.

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It was found that, in the presence of ulvan, the coronavirus did not infect cells. "In other words," he said, "ulvan prevents the cells from being infected with coronavirus."

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He stressed that the best thing would be to vaccinate the world. However, it has become clear that this is unlikely to happen -- at least quickly.

"As long as billions in the low-income world do not have access to the vaccinea the virus is expected to develop more and more variants, which may be resistant to vaccines - and the war against the coronavirus will continue," Golberg said. "For this reason, it is very important, for the sake of all mankind, to find a cheap and accessible solution that will suit even economically weak populations in developing countries."

Source-IANS