Low dose of the medicine intravenous immunoglobulin decreases the effect of dangerous toxins during severe infections
During necrotizing soft tissue infections ordinary bacteria infect our body, spread rapidly and cause tissue death. Treatment with antibiotics is not sufficient and infected tissue needs to be removed through surgery. 22% of people who suffer from this disease need to amputate a limb and 18% do not survive.
A common cause of these infections is group A streptococcus. These bacteria form toxins that lead to overactivation of the body’s otherwise helpful immune cells, causing a so called “cytokine storm” which contributes to a severe course of the disease and the need of intensive care.
Recently, a study called INSTINCT was performed. In this study patients with necrotizing soft tissue infections were randomized to treatment with either intravenous immunoglobulin (IVIG) or placebo, in addition to other treatment. This study showed a trend towards better health after treatment with IVIG in the subgroup often caused by group A streptococcus, but no clear correlation during infections caused by other bacteria. However, the study used a lower dose than in previous studies: 25 g per day.
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