Wednesday, March 22, 2017

A Virus, Fished out of a Lake, May Have Saved a Man's Life

The most common forms of medicine used to fight bacterial infections are antiobiotics; however, in the case of a man Dr. Ali Khodadoust, a virus was used to kill the serious infection that was nearly killing him. Clearly, a virus doesn't seem like the best form of medicine, but a virus-using method called phage therapy has actually been used for over a century. Back before antibiotics were discovered, bacteria-infecting viruses called bacteriophages were used to treat infections. This method became outdated and was never studied enough because of the submergence of antibiotics. But, when the bacteria killing Dr. Ali Khodadoust was resistant to antibiotics, the use of page therapy was turned to.

In 2012, Khodadoust had to have a coronary artery bypass, in which there was a piece of plastic mesh patching placed on his aorta. The mash patch end up having a bacteria on it called Pseudomonas aerugino that created a massive infection on the aorta. This bacteria is virtually harmless to healthy people, but can be extremely harmful to someone with a weakened immune-system, such as someone with cystic fibrosis, which we talked about in our first case study. 

Antibiotics were tried, but the bacteria was resistant to them. A fistula, which is essentially a hole, formed on his chest. The hole became infected by the bacteria as well. For three months he was on large amounts of antibiotics that were only helping a little bit, and carrying an IV port with him. The doctors didn't know what to do because they were scared of spreading the bacteria. Just as Khodadoust was falling into a "miserable medical limbo", a scientist named Benjamin Chan came with an idea. He wanted to try phage therapy on the infection. All they had to do was find bacteriophages that killed infections like Pseudomonas aeruginosa. 

After searching for weeks, a sample of water from a Dodge Pond in Connecticut came up. Bacteriophages from the water were tested and worked on the Pseudomonas aeruginosa sample! They called this perfect virus OMKO1. Chan and the other doctors made a plan to use this OMKO1 on the infection and then kill off any remaining bacteria with strong antibiotics. This plan was a risky one to be tried on Khodadoust, but something had to be done -- it was do or die for him. Chan and the other doctors got the operation approved by the FDA and did it. 

Five weeks after the surgery, Khodadoust was in his homeland of Iran and had to be rushed into surgery to stop massive bleeding from a bone poke in his fistula. After the surgery, they tested him for Pseudomonas, and there was no trace at all. The phage therapy had worked! Miraculously, the virus had worked against the bacteria and they concluded that OMKO1 was capable and worth studying much further. 

I found this article incredibly intriguing and awesome. I never knew that viruses, which are normally looked at in a negative aspect, could be used in a positive way. I think it shows how cool biology is -- how the medicine we may need could be all around us. This article and assignment definitely make me want to read more on these websites.


-Connor Lemmon

11 comments:

  1. I agree with you. I always thought of viruses as being the agents of diseases and not the opposite. I think your article was very interesting because it shows that in an emergency situation, where there are no answers, people working in science can find answers relatively fast. I also find interesting that a treatment that was used in the past was, at the end, more effective than antibiotics.

    ReplyDelete
  2. This comment has been removed by the author.

    ReplyDelete
  3. I enjoyed reading your article. It is nice to hear that viruses can be useful after all! As a mother, viruses have always been my nemsis, as they are usually untreatable. With the negative perspective most people have, I am sure Dr. Khodadoust was reluctant to infect himself with something I am sure he thought would do more harm. It makes me grateful for all the brilliant minds out there who think outside the box!

    AH

    ReplyDelete
  4. I found this article very interesting! I was not aware of the benefits of viruses nor did I expect them to find it in a random pond. I find it comforting to know that we can cure others and survive off of natural things we live in rather than always creating some synthetic product that can have negative side effects. Very cool.Part of me always wonders what it would be like to be the guy that needs to procedure and gets to the point of allowing doctors to try anything because anything is better than dying.

    -JC

    ReplyDelete
  5. this was very interesting. In the article it said that they had to find the bacteriophages that killed infections like Pseudomonas aeruginosa. My question is, is it relatively easy to find these bacteriophages or are they uncommon?

    -George Lewis

    ReplyDelete
    Replies
    1. There is an abundant amount of bacteriophages in sea water. On a website from American Society for Microbiology, they stated that in the “… coastal sea water there are typically as many as 10^7 (ten million) tailed phages per milliliter” This virus is also more abundant in fresh water. Altogether “…. there may be as many as 10^30 tailed phage globally. They are also not too difficult to capture. Because they have a distinct shape, they could be spotted by centrifuging them and using an electron microscope.
      A.B

      https://www.asm.org/division/m/M.html

      Delete
    2. It is indeed relatively easy to find bacteriophages. As noted above, they are extremely abundant in sea water or lakes. The thing is, the right bacteriophage has to be found for a certain purpose. Not every bacteriophage will be used effectively as the one did in my post.

      Delete
  6. This is really interesting to me. I like the idea of going back to past remedies and learning "new" options of treatment. What a great use of a virus! Very well written George Lewis.

    ReplyDelete
  7. What an awesome article. I found it very interesting that using viruses to treat various infections has been used for so long. It is a process that doesn't seem talked about or used much currently. Are there specific diseases or infections where these types of treatments are mainly used?

    Thanks for the well written blog post and the new information.

    -CL

    ReplyDelete