Post by eleva

What happens when the immune system's defense mechanisms turn against the body itself? A key part of the answer lies in the complement system—and one of its most important regulators: ➡️ Factor H Factor H plays a central role in controlling the alternative complement pathway, helping to ensure that immune defense remains both effective and precise. Its functions include: ✔️ Regulating C3 activation ✔️ Preventing excessive complement amplification ✔️ Protecting healthy cells from unintended immune attack ✔️ Maintaining immune homeostasis Why does this matter? Unlike other complement pathways, the alternative pathway is continuously active at a low "surveillance" level. Without sufficient regulation, this ongoing activity can escalate, leading to damage of healthy tissues. Factor H acts as a critical safeguard, ensuring that complement activation stays targeted and proportional. When this regulation is disrupted, the consequences can be severe. Dysregulation of Factor H has been linked to chronic inflammation and tissue injury, contributing to complement-mediated diseases such as C3 glomerulopathy (C3G). As our understanding of complement biology continues to grow, Factor H remains a major focus of both basic research and therapeutic innovation. 🔬 Understanding regulators like Factor H is essential for developing next-generation treatments for complement-driven diseases. Reference: Zipfel PF et al., Nature Reviews Nephrology (2013) #ComplementSystem #FactorH #ComplementBiology #Immunology #C3G