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The die off, IRIS

Discussion in 'Antivirals, Antibiotics and Immune Modulators' started by heapsreal, Jan 8, 2012.

  1. heapsreal

    heapsreal iherb 10% discount code OPA989,

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    Immune reconstitution inflammatory syndrome (also known as "Immune recovery syndrome"[1]) is a condition seen in some cases of AIDS or immunosuppression, in which the immune system begins to recover, but then responds to a previously acquired opportunistic infection with an overwhelming inflammatory response that paradoxically makes the symptoms of infection worse. [2]

    The suppression of CD4 T cells by HIV (or by immunosuppressive drugs) causes a decrease in the body's normal response to certain infections. Not only does this make it more difficult to fight the infection; it may mean that a level of infection that would normally produce symptoms is instead undetected (subclinical infection). If the CD4 count rapidly increases (due to effective treatment of HIV, or removal of other causes of immunosuppression), a sudden increase in the inflammatory response produces nonspecific symptoms such as fever, and in some cases a worsening of damage to the infected tissue.

    There are two common IRIS scenarios. The first is the unmasking of an occult opportunistic infection. The second is the paradoxical symptomatic relapse of a prior infection despite microbiologic treatment success. Often in paradoxical IRIS, microbiologic cultures are sterile. In either scenario, there is hypothesized reconstitution of antigen-specific T cell-mediated immunity with activation of the immune system following HIV therapy against persisting antigen, whether present as intact organisms, dead organisms, or debris. [3]

    Though these symptoms can be dangerous, they also indicate that the body may now have a better chance to defeat the infection. The best treatment for this condition is unknown. In paradoxical IRIS reactions, the events will usually spontaneously get better with time without any additional therapy. In unmasking IRIS, the most common treatment is to administer antibiotic or antiviral drugs against the infectious organism. In some severe cases anti-inflammatory medications, such as corticosteroids are needed to suppress inflammation until the infection has been eliminated.

    Infections most commonly associated with IRIS include cytomegalovirus, herpes zoster, Mycobacterium avium complex (MAC), Pneumocystis pneumonia, and Mycobacterium tuberculosis. AIDS patients are more at risk for IRIS if they are starting HAART for the first time, or if they have recently been treated for an opportunistic infection. It is generally advised that when patients have low initial CD4 T cell count and opportunistic infection at the time of their HIV diagnosis, they receive treatment to control the opportunistic infections before HAART is initiated.

    Cheers!!!
    http://en.wikipedia.org/wiki/Immune_reconstitution_inflammatory_syndrome
     
    PWCalvin likes this.

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