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Archive for the ‘Covid-19’ Category

Clots and vaccines


Blood clots, for example, deep vein thromboses or pulmonary embolisms, are serious and we should rightly be concerned about these. With ~ 17 M doses of the AZ vaccine delivered into people, we have reports of 15 cases of deep vein thrombosis and 22 cases of pulmonary embolism. Deep vein thrombosis occurs at rate of 0.1% (so 1 in 1000) across all age groups, increasing with age. So every day that means around 47 cases in a population of 17 million – in fact it will be more, because those vaccinated are not representative of the population, but an older segment.

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In three weeks schools re-open and a few weeks later undergraduates return to university. Universities appear to be moving to a model of having all students in attendance, and using a lot of remote teaching. This in itself is not necessarily a bad idea, as there will be facilities available and for 1st years in Halls and for many later year undergraduates they may have better internet connectivity, plus there is the library various computer rooms.

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Our building complex of Biosciences and the research parts of the connected Life Sciences and MerseyBio buildings opened this week – a two week pilot and the first research building complex on campus to re-open after the lockdown. In reality, like a number of buildings in the Faculty, these had never closed. A small number of covid-related projects were running during lockdown, including our glyco one. These required skeletal support services. Moreover, key maintenance, from plants, to fly strains and flushing the water system to prevent a Legionella outbreak had to continue during lockdown.

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With new data in hand, our first preprint on SARS-cov-2 receptor binding domain (RBD) interacting with heparin now has a sibling, which demonstrates that heparin inhibits the infection of Vero cells by SARS-cov-2

Some of the key points of the team’s new work are:

  1. Inhibition of viral infectivity in a Vero cell model by heparin, which is a better inhibitor for SARS-cov-2 than SARS-cov.
  2. Analysis of the interactions of a more extended library of model heparins with the SARS-cov-2 receptor binding domain. As with many other heparin-binding proteins, these data show that while sulfation is critical for RBD binding, the amount of sulfate is not, but instead it is the spatial arrangement of sulfate groups that is most important.

Together the data point to heparin being a potentially useful therapeutic to reduce infectivity. (more…)

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E-mail I sent out to the research group today.

Dear All,

From now on we really do need to reduce lab work and enforce strictly social distancing, something we stated last week.

The first transmissions from Scousers who picked up the virus on match night (bars, clubs, hotels) from Athletico fans will occur this coming week and next week; we will then get F2, F3 (F number related to contact: primary = F1, a contact’s contact = F2 etc.) transmission. (more…)

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