An excerpt from THE CHRONIC FATIGUE SYNDROME EPIDEMIC COVER-UP

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Wednesday, November 05, 2014

Human herpesvirus 6A infection and immunopathogenesis in humanized Rag2⁻/⁻ γc⁻/⁻ mice.

http://www.ncbi.nlm.nih.gov/pubmed/24006442


Abstract

Although serious human diseases have been correlated with human herpesvirus 6A (HHV-6A) and HHV-6B, the lack of animal models has prevented studies which would more definitively link these viral infections to disease. HHV-6A and HHV-6B have recently been classified as two distinct viruses, and in this study we focused specifically on developing an in vivo model for HHV-6A. Here we show that Rag2⁻/⁻γc⁻/⁻ mice humanized with cord blood-derived human hematopoietic stem cells produce human T cells that express the major HHV-6A receptor, CD46. Both cell-associated and cell-free viral transmission of HHV-6A into the peritoneal cavity resulted in detectable viral DNA in at least one of the samples (blood, bone marrow, etc.) analyzed from nearly all engrafted mice. Organs and cells positive for HHV-6A DNA were the plasma and cellular blood fractions, bone marrow, lymph node, and thymic samples; control mice had undetectable viral DNA. We also noted viral pathogenic effects on certain T cell populations. Specific thymocyte populations, including CD3⁻ CD4⁺ CD8⁻ and CD3⁺ CD4⁻ cells, were significantly modified in humanized mice infected by cell-associated transmission. In addition, we detected significantly increased proportions of CD4⁺ CD8⁺ cells in the blood of animals infected by cell-free transmission. These findings provide additional evidence that HHV-6A may play a role in human immunodeficiencies. These results indicate that humanized mice can be used to study HHV-6A in vivo infection and replication as well as aspects of viral pathogenesis.

HIV, Heart Disease, Diabetes … and Chronic Fatigue Syndrome? The Unutmaz Project to Decode ME/CFS

http://www.prohealth.com/library/showarticle.cfm?libid=19331

vasculitis in a patient with HHV-6 infection.

 http://phoenixrising.me/research-2/the-pathogens-in-chronic-fatigue-syndrome-mecfs/hhv-6-and-chronic-fatigue-syndrome-mecfs-an-overview/human-herpes-virus-6-hhv-6-and-disease

Leukocytoclastic vasculitis in a patient with HHV-6 infection. 

http://www.ncbi.nlm.nih.gov/pubmed/10721848

Background on Vasculitis: http://en.wikipedia.org/wiki/Vasculitis

 
Vasculitis (plural: vasculitides)[1] is a group of disorders that destroy blood vessels by inflammation.[2] Both arteries and veins are affected. Lymphangitis is sometimes considered a type of vasculitis.[3] Vasculitis is primarily caused by leukocyte migration and resultant damage.

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Plague: One Scientist’s Intrepid Search for the Truth about Human Retroviruses and Chronic Fatigue Syndrome (ME/CFS), Autism, and Other Diseases

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HHV6 involvement in pediatric drug hypersensitivity syndrome

Conclusions

HHV6-positivity with DHS is associated with a more severe disease course. Treatment with systemic corticosteroids was associated with a non-statistical trend toward reduced hospital LOS and febrile days, and a statistically reduced number of days until cessation of progression.

http://onlinelibrary.wiley.com/doi/10.1111/bjd.13512/abstract

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