|Retraining a damaged immune system?
Dec 30, 2012
Is it possible to somehow re-train an immune system that has had "holes punched through it" by HIV?
A long time ago, my ID doc explained that the damage HIV does to the immune system is somewhat like removing Z from the alphabet. You can never spell "Zebra" again, but you will be able to describe it... in terms of the damage HIV does to the immune system.
My question above is specifically relevant to those (like myself) who have been fortunate enough to have undetectable/suppressed virus for many years.
My ID doc today explained that people like myself, despite really healthy CD4 counts, don't always respond well to immunizations.
I want to understand these issues.
The concept of retraining the immune system is probably very vague - how can one account for all the various pathogens and colds and viruses we've been exposed to over our lifetime. What does it actually mean and how can you even determine what's missing.
| Response from Dr. Henry
HIV infection causes both qualitative and quantitative damage to the immune system. Even with good viral suppression and decent immune recovery (as measured by CD4/T helper cell counts) the immune system does not return to normal. Factors influencing immune recovery include genetics, size of thymus, amount of scarring that has taken place in lymphoid tissues, ongoing immune activation and many other factors. With so many factors involved it is not a simple matter to retrain the immune system and some factors are not currently ammendable to interventions (such as amount of scarring or genetic factors or size of residual thymic gland). KH
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