For the complement system to cause AMD, there must be initiation (a ‘trigger’), amplification, and local retinal damage caused by the process. The alternative pathway of the complement system is ...

Complement molecules are the immune proteins responsible for identifying bacteria, viruses, and other foreign invaders as they circulate through our bodies. Their function helps lymphocytes to locate ...

Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing the first line of defense against ...

Nipocalimab might lower the concentration of anti-acetylcholine receptor antibodies in people with generalized myasthenia gravis, a study shows. PHOENIX, Arizona—Nipocalimab might lower the ...

Crippling the complement cascade in a mouse model of AD leads to more plaques, but less neurodegeneration and better function, according to a new study from Cynthia Lemere and colleagues at Brigham ...

Medically reviewed by Jamin Brahmbhatt, MD Key Takeaways Complement 3 glomerulopathy (C3G) is diagnosed with a combination of ...

C3G and IC-MPGN can be difficult to diagnose because they are so rare and their symptoms are vague and nonspecific. A kidney biopsy is considered the gold standard and usually needed to confirm the ...

Traumatic brain injury (TBI) is a major cause of disability and a risk factor for early-onset dementia. The injury is characterized by a physical insult followed acutely by complement driven ...

In this analysis of patients with myeloperoxidase-ANCA-positive AAV, all urinary complement C3 fragment levels were elevated significantly compared with healthy controls (P .01 for all). Specific ...