So, I decided to do a second blog post this week because of
a very interesting lecture Dr. Thompson gave my class on Thursday. I am in Dr.
Thompson’s Instrumental Analytical Chemistry class. He was explaining to us
Electrophoresis, which is something we are all very familiar with.
Electrophoresis is a method that was originally used to separate proteins.
Next, scientists used electrophoresis to figure out the sequences of the
protein, they did this using gel. Later, they used electrophoresis to separate
DNA and then finally they used it to sequence DNA. However, before he went into detail of this
process, he decided to give us a little background which I found very
interesting. The reason I found this lecture so interesting is because it
included a relationship between small pox and electrophoresis.
This background included the researcher who first used
electrophoresis for separating proteins. He was not the first researcher to USE
electrophoresis, but he was the first to use it in order to separate proteins.
His name was Arne Tiselius. Before I talk about him, I want to first talk about
how and why he began his research.
Smallpox has a really long history. Researchers have been
able to track smallpox back to over 3,000 years ago. They found the rash that
smallpox gives you on mummies. By the 18th century, smallpox killed
over 400,000 people in Europe every year. Smallpox was getting out of hand and
something needed to be done.
Smallpox wasn’t always lethal. Some people got smallpox and
it was deadly, but others survived because they had a less severe case of the
deadly disease. Lady Mary Wortley Montagu was one of the lucky ones who
survived this deadly disease. She is also the woman who changed people’s life
in England. While she was in Turkey she saw doctors harvest scabs from someone
who was sick but not THAT sick. They took these scabs and blew it up someone’s
nose who did not have the disease. This person would get sick with the minor
form and therefore live. Once this happened, that person never got the bad case
of smallpox because they were protected. She brought this technique back to
England where it was first tested on death row prisoners. Once it was proven to
work, doctors began to administer this “vaccination”.
Although this worked for smallpox, what do you do if there
isn’t a less severe type of disease? How do we protect ourselves from things
like anthrax? Well, Louis Pasture was
the first to take on this task. He decided to see if he could protect people
from anthrax. To do this, he took anthrax and added a strong oxidizing
agent. The mixture of the two partially destroyed anthrax. This experiment had
the same effect and protected people if they got this destroyed version of
anthrax injected into them.
These techniques intrigued many scientists all over. They
wanted to know HOW this worked, why did giving us something harmful actually
allow our body to protect us? These questions are what fueled Arne Tiselius’
research. He hypothesized that different ions in blood and different proteins
in blood move at different speeds in electrodes and this would provide a
mechanism to separate one type of protein from another. This made him wonder if
there were specific ions in the blood that protect us from disease. After his
research he did conclude that ions play a very important role in protecting our
bodies from disease. He was able to see this by separating these ions from each
other using Electrophoresis.
I could go into detail behind the electrophoresis work that
Tiselius did, but that will have to be another blog because this one is long
enough. Moral of this blog is SCIENCE is AWESOME and we can thank those brave
people in Turkey who thought, “Maybe if I snort some scabs I won’t die from
smallpox”, for vaccinations. AND we can thank Tiselius for figuring out how our
body works and why immunizations protect us.
Sources:
Mainly Dr. David E. Thompson
https://en.wikipedia.org/wiki/History_of_electrophoresis
I think your story about Lady Mary Wortley Montagu is truly incredible. The fact that she risked her life everyday to help take care of small pox patients is amazing. If you think about it, its kind of what nurses and doctors do today. Even though some of the stuff they see arent as contagious as small pox...they still risk catching something. The part about them snorting the scabs really grosses me out and you know that I am not grossed out easily. But I guess that is a good way to get the virus directly into the blood stream.
ReplyDeleteThe story of the origins of vaccinations is really interesting. Its incredible the people, with no modern scientific knowledge, were able to invent the process of vaccination by infecting individuals with diseases. The process seem kinda gross but it worked lol. Good job Caitlyn!
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