Hi again. I really like this podcast. I just came home from Thailand with a stomach bug that everyone around me (none of which are trained medical professionals of course) believes is giardia, so of course I listened to that episode first.
Anyway, as awesome and inclusive as this episode was in terms of defining and classifying parasites no plant parasites were mentioned! Of course I know that this is primarily a medical podcast, but it would've been neat to hear a sentence or 2 about the fact that plants can also act as parasites (e.g. the hemiparasitic genus Pedicularis). I'm grateful for this free entry into the world of parasites, thanks so much.
hello, I apologize for responding so late, just heard the show today. With Copper being a rather expen$ive commodity, I'm sure many facilities would find it hard to replace a lot of the stainless steel surfaces in hospitals. Did the scientist conducting these experiments consider collaborations with or consult metallurgist, to maybe test or determine a significant amount of copper in a sort of conglomerate metal?
I can't believe anyone would rate this performance other than 5 stars. Whether or not you like the music, you have to give 8 scientists a lot of credit for getting up in front of a crowd and performing - not giving a talk but playing music.
In regards to the comments concerning how human/Neandertal contact may have affect each species, this article which appeared in Science Magazine: The Shaping of Modern Human
Immune Systems by Multiregional
Admixture with Archaic Humans, Vol 334 7 October 2011, suggests that humans benefitted greatly.
Apparently, we picked up alleles that strengthened our immune system.
http://www.sciencemag.org/content/334/6052/89.abstract?sid=63979397-4ff4-4778-b1be-3c595c0506f1
This was a wonderful episode!
Emilio's background information about E. hux and diatoms etc was vital to my understanding of the episode, and not only that, I was filled with wonder and amazement at the thought that blooms of these tiny creatures are visible from space. And that they can affect climate! Thank you for blowing my mind today!
It's not central to the podcast, but the cornea is much much thicker than just 2 cells.
The cornea's thickness is around 570 μm, the epithelial layer on the surface is about 50μm (7+ cell layers). If I remember correctly it is the layer of collagen under the epithelial layer that when damaged causes a lot of the neovascularization and scarring associated with infections and mechanical damage, but that's remembering a primer from quite a long time ago.
Thanks for the great episode..
I just want to sat that IgA molecule could not activate the complement system (in contrast to IgM and IgG) hence the complement system does not work efficiently in the lumen of the gut although there is little secretory IgM and IgG.
Jim things have moved on considerably since the documentary was made. The science is still evolving to support the views of ILADS and contradict the narrow views of the IDSA which currently dictates treatment World wide.
Last year the institute of Medicine held a Workshop still available on their website, about Lyme disease and other tick borne illnesses- they found significant gaps remain in the science, so far too soon to be dictating restricted guidelines as per iDSA.
Possibly the most significant research was that by Embers, Barthold et al
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0029914
Persistence of Borrelia burgdorferi in Rhesus Macaques following Antibiotic Treatment of Disseminated Infection
Don't remember seeing this much on the internet yet although it was published 11th January 2012
Tim So much is known about Borrelia but ignored lectures by Microbiologist Tom Grier can be found on my blog but too long to post here. He explains reasons why Microbiologists are not finding Borrelia by modern techniques and also talks about work done by Miklossy and Paschner finding Lyme on the brain (part 4 of his lectures) In Paschner's mouse model 20 years ago the strain injected in the tail of the mouse had morphed within 4 weeks and was different from what was harvested from the brain of the mouse.
I was among the 'crowd' in the room watching the show at the ASM meeting. Listening to the podcast is great, but actually seeing how they do it is even better! Keep the good work!
I am always curious about why someone would vote a TWiV episode only one star. If you have a specific problem with the episode, please leave a comment so that we can improve it in future episodes.
@Felix - Okay, a new version has been uploaded to our content delivery network. I tested it out in iTunes and it works for me (so did the last one BTW). Please let me know if you have any issues with it. Also, you should unsubscribe to TWiP and then re-subscribe to download the new version.
Hello, contact Vincent Racaniello here about the use of images that have been posted in the TWiP posts. If you use the search function on this site you will be able to find images with their specific copyright designations. In most cases (with the exception of images in the public domain) you should contact the author of the image for their usage in a book since it is ultimately for commercial purposes.
thanks for this great podcast
there are not many chance to hear about parasites
I'm currently writing a book about parasites in korea
and I wonder if I could use some of the images in this site for my book
thank you very much
When you were talking about acid hydrolase it reminded me of an old Saturday Night Live Sketch called "Josh Acid" starring Mel Gibson. So I had to draw a quick cartoon:
http://i.imgur.com/tEbin.jpg
Everybody its Vincent Rakenalo(sorry if i mispelled)
This is twiv your weekly dose of virology.
I love listening to your podcast very much and love to thank for this. Dont we have podocats on bacteria...like twiv, twip?
Thank you
Ish,EVEREST
The XMRV virus is undoubtedly implicated in chronic fatigue. Its proteins are similar to those of the mitochondrial respiration and energy generating system, and antibodies to the virus will also target these important human proteins. Even if the virus has been successfully eliminated, antibodies will continue to encounter the human homologues, driving an autoimmune response that effectively knocks out the mitochondrial energy generating system, and makes you tired and fatigued.
Some of the proteins that make up the XMRV virus closely ressemble human proteins that are involved in mitochondrial respiration and energy generation and they are also similar to proteins involved in prostate cancer.The viral proteins are immunogenic, and antibodies against the virus will also target the similar human proteins. Even if the immune system deals with and eliminates the virus, these antibodies will continue meeting the human proteins, sustaining an autoimmune response that keeps on targeting the energy and cancer related areas.
This may explain the controversy over the presence and absence of XMRV in different studies. The virus doesn't need to be there, it just needs to have been there.
Miso, thanks for your comments. Glad you liked this slightly different episode. We'll aim to do the same with TWiV. As for TWiB - stay tuned; it's in the planning stages.
Anecdote shows like this one add a human spin on the study of parasite and parasitism. I really enjoyed this week's show and would love to hear shows like this on a weekly basis. (I'd like to hear some TWiVs that are in the same vein as well.)
On a slightly unrelated I would also subscribe to a TWiB if it became available. Though I have no educational experience in the field of microbiology outside of what I have learned through the internet and in my high school biology courses I find your shows completely irresistible.
Your podcasts make me want to shift my undergraduate program from my generic liberal arts degree to hard science.
Finally got to sit down and listen to this one I loved it. I listen to a lot (and I mean a lot) of science podcasts and I have to say that TWiP is my new favorite. Yay tapeworms!
Hopefully the next one is coming sooner, rather than later???
Thanks Vincent for another interesting interview. If you are reading this and would like to know the latest on XMRV research please listen to this well rounded conversation on the topic. Stephen Goff does a great job on discussing the potential links between XMRV, prostate cancer and chronic fatigue syndrome.
"This study did not duplicate the rigorous scientific techniques used by WPI, the National Cancer Institute and the Cleveland
Clinic, therefore it cannot be considered a replication study nor can the results claim to be anything other than a failure not just to detect XMRV, but also a failure to suggest meaningful
results."
http://www.wpinstitute.org/news/docs/WPI_Erlwein_010610.pdf
Not being an expert in respirators, are there any options other than the N95 studied that offer protection against influenza? Or, in other words, what should a discerning consumer look for in a protective "surgical type" mask if they want to protect themselves from exposure or from exposing others?(I assume the masks work both ways?)
Thanks for the kind words and the plug. I would love it if your listeners started submitting stories for TWiV via MicrobeWorld by tagging the article with TWiV.
Open access debate was great. So important to make all that amazing content available to the people who could really use it but are least likely to afford it...students. Although I do realize that it's difficult because these journals are very expensive to produce so it's not as much of a no-brainer as it appears on the surface. That said, "open" is the future of media. Ad models/sponsorship will need to be embraced strongly.
Vincent and Allen, I loved the discussion on open access and the email's were fantastic. I think the one listener is correct in that you truly do walk the fine line between layman and researcher and some how manage to keep all interested and involved.
Brian
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ish
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