Cort
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Latest from the XMRV Buzz on Dr. Mikovits talk
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r. Mikovits UCLA Talk - Dr. Mikovits talked about viral/DNA interaction in ME/CFS stating that she's identified 6 DNA defects that could make people with ME/CFS more susceptible to viral invasion - a tack that Ian Lipkin appears to be taking with autism; it's not just the virus - it's the viral - genome connection that confers disease.
She reported XMRV is more easily detectable in the cell free blood plasma than in PBMC's. Viruses, of course, infect cells, replicate in them and then travel through the plasma looking for more cells to infect.
In the background info she noted the RNase L and NK cell abnormalities in many people with ME/CFS which could decrease their ability to fight off pathogens. (Interestingly, early Dr. Mikovits reported that XMRV infection was not associated with either of those measures; instead it was associated with interferon levels. Earlier she also reported that she had found an immune signature in XMRV positive patients; that paper will go a long way towards clearing up the what immune abnormalities are associated with the infection. However, that paper probably, one would guess, will not get published until the research community has come to a consensus on XMRV.
Dr. Mikovits explication of the MLV's effects on mice was almost painful in how it closely matches some ideas regarding CFS. She noted how MLV's tend to replicate in the epithelial cells lining the blood vessels in the brain, which activates neuro-glial cells causing them to produce pro-inflammatory cytokines resulting in 'leaky capillaries', inflammation and neural damage.
Dr. Baraniuk's fascinating spinal fluid proteome study findings suggested a very similar scenario; increased inflammation (associated with amyloid factors) that stick to and puncture blood vessels causing leakage (and more inflammation). There is also intense interest in the role neuroglial cells play in producing pain in FM and other mysterious pain disorders. Plus virtually everybody, it seems, is interested in the role cytokines produced in the brain play in CFS. Cytokines, for instance, trigger 'sickness behavior' which is nothing more than a weird way to refer to the fatigue, pain and other fluey symptoms associated with colds. Even the CDC is very interested in the role Interferon plays in CFS (ironically enough - it's a cytokine Dr. Mikovits associates with XMRV). So there's alot of potential overlap between the damage Dr. Mikovits reports MLV's cause and findings in ME/CFS. Thanks to Andrew for providing a friends summary of the event.
Dr. Baraniuk's followup brain proteome study is finished and my sense, in talking to him, was that results were good'. A validation of his first paper would be a huge win.