Levels of C4d and C4d/C4 associate with clinical and histopathological treatment response in proliferative lupus nephritis. Complement activation markers, particularly C4d and the C4d/C4 ratio, are ...

Please provide your email address to receive an email when new articles are posted on . Erythrocyte-bound C4d, a biomarker for systemic lupus erythematosus patented by Exagen Diagnostics, is useful in ...

The complement system is part of the body's immune system to fight pathogens and remove cell debris; its role in two autoimmune diseases and a mental disorder is a surprise Variants in a gene of the ...

A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...

A gamma-globulin factor in the serum of patients with systemic lupus erythematosus that reacts with isolated cell nuclei 1 or nucleoprotein 2,3 has been detected in many ways. 4 The standard method of ...

Study offers molecular explanation for long-standing observation that certain diseases occur more often or more severely in different sexes. Complement component 4 (C4) genes protect against the ...

Most people with lupus have antinuclear antibodies (ANAs) in their blood. But a positive ANA test doesn’t always mean lupus. The test can be positive in people with other autoimmune illnesses — ...

Exagen, a life science company serving the rheumatology specialty, and the Lupus Foundation of America, the national force devoted to solving the mystery of lupus, announced a new initiative to ...