Why Is Blood Purification Important in Treating Kidney Disease

While treating kidney disease, blood purification is necessary and it is important for the good treatment effects. Well how does blood purification help to treat kidney disease and why it is important?
How does blood purification help to treat kidney disease?
According to clinical studies, more than 95% kidney diseases occur because of immunodeficiency accompanied by low immunity which allow immune complexes to be formed in patient's body. Immune complexes circulate in the blood and when they deposit in kidneys, inflammatory immune response appears. Inflammatory immune response damage our kidney directly, so blocking it is very essential for preventing further kidney damages.
Blood purification refers to medical technics that can help to clear immune complexes and other harmful substances away from patient's blood. At present, available blood purification technics include plasma exchange, immunoadsorption, hemofiltration and hemoperfusion and so on. They focuses on clearing different kinds of wastes away, for instance, hemoperfusion is always applied to remove macromolecular substances; however, hemofiltration usually is used to clear micromoclecular substances away from blood. As long as there is no harmful substances, there is no inflammatory immune response, and also there is no further kidney damages.
Why is blood purification important in treating kidney disease?
Immune complexes or other harmful substances lodge in kidney and cause inflammatory immune response which damage renal tissues directly. If we do not clear these substances away from blood, even if kidney damages are repaired, new kidney damages are caused again.
Conventional treatment for kidney disease is to block inflammatory immune response which can stop progression of kidney disease immediately, but fail to clear these harmful substances away. As these substances still exist in blood, inflammatory immune response appears someday, which can explain why kidney disease relapses easily and even by a cold. So we can say kidney disease patients can not recover radically at all without blood purification.