Name: 冠狀病毒疫情最新進展 33:COVID-19藥物治療試驗，全球測試仍有限 (Coronavirus Epidemic Update 33: COVID-19 Medication Treatment Trials, Global Testing Remains Limited)
Uploaded: 2021-01-14T09:26:15.000Z
Duration: 8 min 10 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。學這些英文用法：武漢肺炎,新型冠狀病毒,新冠肺炎,COVID-19

welcome to another MedCram co19 update this is for Monday the 9th of March gear

in Orange mainland China's cases are leveling off the total recovered is

情態副詞

increasing mainly because of the numbers generated from mainland China but at

other locations we're starting to see things pick up as well if we look at the

country specific statistics we can see of course China at the top but

interestingly if we look at South Korea and Italy these are two very comparable

countries here in terms of total cases and if you look at their populations

total cases per 1 million they're also similar 145 versus 122 we know however

that South Korea has done aggressive testing close to 200,000 people have

and so I believe what you're seeing here with close to 200,000 people being

tested this number is probably pretty close to people who are actually

infected in that country whereas in Italy this may represent more of a tip

of the iceberg and as a result of that we can see that potentially explained

here is the total deaths if the virus is having the same effect in both countries

and at the healthcare delivery systems in both countries are similar you would

expect the total deaths here to be similar and serious and critical that's

another category where there is a serious difference the big news in Italy

is that they are taking what they call exceptional measures to contain about 16

million Italians living in 14 provinces in the north of the country as well as

restrictive measures covering the whole of the country you can see here in those

areas we have travel being restricted gatherings all schools and universities

are closed all museums and places of Culture will be closed all religious

festival and events are suspended you can see cinemas pubs theaters etc etc

any places where people congregates are being severely restricted or closed in

the United States with more testing we're going to see an explosion here I

believe of people that are gonna be positive and you can see all of those

here listed at world ometer okay we've received a lot of questions about Cova

19 treatment possibilities that may be on the horizon medications like REM des

aver that we discussed in our video update 11 that have shown promising

results in a test tube and are in clinical trials with humans as we speak

here's a paper that was published on February 24th that gives more

information about how REM de severe actually works we will put a link in the

description below this medication had gone through phase 1 trials already had

gone through phase 2 trials where the looked at safety again except in a

larger population but when they did the phase three trials on Ebola it did not

work so even though you can get something that works in vitro it doesn't

always mean it's gonna work in vivo you have to go through those phase three

trials before the FDA will give it a label well the unfortunate thing about

this medication is it passed phase one and phase two so we know it's a

medication that's relatively safe and it's sitting on the shelf looking for a

job to do and now enter this kovat nineteen situation here at the beginning

of 2020 and now it's being put to work directly into a phase three trial so the

nice thing here is that it didn't have to go through phase one and two because

it already did that so before we continue to talk about REM de severe we

need to follow up on what is traded in our last video update 32 about how the

Czar's cove two virus that causes cove in nineteen actually hijacks or cells

and how something called RNA dependent RNA polymerase or r d RP for short is

essential for the replication of RNA viruses please go back and watch this

video so you have context so let's zoom in and look closely at the function of

our d RP because that's going to tell you why REM the severe may or may not

work so here's our RNA dependent RNA polymerase and here's our viral RNA and

you can see the nucleotides here a u g c g c-- you what RNA dependent RNA

polymerase is whenever they see an a on the first strand it will create a strand

that has a you whenever they see a u it will put in an a whenever they see a g

it will put in a c wherever it sees a see it will put in a g and so forth and

so forth and the way that this works is it always creates RNA from the five

prime end to the three prime end which means that it's reading the templates

RNA from the three prime end to the five prime end so here it's coming up to the

next nucleotide and there's these things floating around and they have three

phosphates on them all of them have three phosphates and so the way that

this is abbreviated as there floating around in the cytosol for

instance if this is an a this would be known as a adenosine tri phosphate or

ATP this one here would be known as UTP and what happens is as these nucleotides

which are just floating around in solution there's a spot that opens up

and because this is AG one of them that has a C on it and three phosphates will

nicely bind in here and it will form C and it will continue to go on I'm just

going to erase some of this here so that we can see it a little bit more clearly

the thing that's really interesting about this is when it comes to the time

when there is a you that opens up ATP should normally go in there REM de

severe as will abbreviate our DV with a three phosphate on the end of it

actually binds into this you state better than the a and so it will go in

there instead and here's the nice thing about our DV in the situation as soon as

our DV binds as this RNA molecule is being copied about three or four

nucleotides down the line it causes the RNA dependent RNA polymerase to stop it

arrests RNA dependent RNA polymerase and if you scroll down to the bottom you can

see that REM des aver triphosphate is very similar to adenosine triphosphate

look at the structure it's going to fit very well inside of that spot as the RNA

dependent RNA polymerase is going by but if you have a concentration of our DV T

P in the cytosol it will suck one of those in and arrest elongation if you

arrest all elongation of the RNA you can't make viruses and you stop the

infection in its tracks so you can see why this medication has a lot of promise

but again we have to do the randomized placebo-controlled trials and those are

underway as we speak I want to give a quick shout-out to everyone here at Meg

cram who is behind each and every one of these videos it takes a team to make it

happen includes Haley Alicia our video editor

David and our producer and co-founder Carl Allred you can help support us by

visiting our website make cram comm subscribing to this YouTube channel and

most importantly sharing these videos with friends and family

we'll be back tomorrow for another update thanks for joining us

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冠狀病毒疫情最新進展 33:COVID-19藥物治療試驗，全球測試仍有限 (Coronavirus Epidemic Update 33: COVID-19 Medication Treatment Trials, Global Testing Remains Limited)

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