Thank you for posting your story and observations,
@Violetta Kolosova. Glad to hear you are doing so well.
Your
ME/CFS forum looks interesting, I am going to read it using Google translation.
This is a controversial area, as the science of ME/CFS is very unsure.
Many ME/CFS patients have chronically high IgG antibodies to the main viruses linked to ME/CFS.
Normal infectious disease doctors will ignore high IgG if IgM is low, and just diagnose past infection.
But ME/CFS doctors will view high IgG antibodies as evidence of an infection somewhere in the body, such as in the body tissues, and may then treat with antivirals when IgG is high.
But it's true that if you have immune abnormalities, then this can affect IgG levels.
In many ME/CFS patients, blood PCR is often negative. Dr John Chia in California has done a lot of research on PCR testing in enterovirus ME/CFS.
Dr Chia found that using the most sensitive reverse transcription-PCR on whole blood samples from enterovirus ME/CFS patients, only 35% of patients tested positive for enterovirus. So Chia concluded that PCR is not a sensitive test for enterovirus infection in ME/CFS.
Interestingly, Chia found 70% of the severe bedridden patients positive by PCR, but only in 12% of the less ill patients where positive. So in the more severe patients, there is more virus in the blood. References for these figures
here.
The reason you do not find much enterovirus in the blood ME/CFS patients is because the infection is located in the body tissues (muscle tissues, intestine and brain).
The "gold standard" method for enterovirus testing in ME/CFS is via muscle tissue or stomach tissue biopsy: if you take a sample of stomach tissue from an enterovirus ME/CFS patient, and test the stomach tissue using PCR, then you usually get a positive result. This is how Dr Chia tests for enterovirus in his ME/CFS patients.
Unfortunately there is very little research looking at herpesvirus infections in the muscles of ME/CFS patients; but one
British study which tested the muscle tissue for both enterovirus and Epstein-Barr virus found both viruses present in ME/CFS — but not in the same patient: the ME/CFS patient either had enterovirus or EBV infection in their muscles.
This makes sense, because we know that ME/CFS is usually either linked to enterovirus or herpesvirus.
The study says:
Unfortunately enterovirus is often ignored by many ME/CFS doctors. But Dr Chia's research suggests over 50% of ME/CFS cases are due to enterovirus (the two enteroviruses linked to ME/CFS are: coxsackievirus B and echovirus).
It's also hard to test for enterovirus; most antibody testing methods (like ELISA, IFA and CFT) are not sensitive enough to detect chronic enterovirus infection in ME/CFS patients. Only a lab antibody test which uses the
neutralization method of antibody detection is sensitive enough to detect enterovirus.
In the Ukraine, there is on lab called
http://mediasnab.com.ua which I believe offers a neutralization antibody for the enteroviruses linked to ME/CFS:
coxsackievirus B test and
echovirus test. I am not 100% sure that it is neutralization though, because of translation issues.
Some enterovirus ME/CFS patients improve using the immunomodulator oxymatrine, and tenofovir is also useful.
This may follow Dr Chia's research which found that PCR blood tests for enterovirus were more likely to be positive in severe patients, compared to mild or moderate patients.