Serum complement factor H and Tyr402 His gene polymorphism among Egyptians with multiple sclerosis

Area of Science:

• Neuroimmunology
• Complement System Biology
• Genetic Epidemiology

Background:

• Multiple sclerosis (MS) is a prevalent inflammatory central nervous system disease.
• The role of the complement system in MS pathogenesis is under investigation.
• Complement factor H (CFH) is a key regulator of the complement cascade.

Purpose of the Study:

• To investigate the association between complement factor H (CFH) Tyr402 His gene polymorphism and serum CFH levels in Egyptian MS patients.
• To determine if CFH levels or specific polymorphisms correlate with MS disease risk or pathological processes.

Main Methods:

• A case-control study involving 86 MS patients and 74 healthy controls from Cairo University Teaching Hospital.
• Serum CFH levels were quantified using enzyme-linked immunosorbent assay (ELISA).
• CFH Tyr402 His gene polymorphism was analyzed via polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP).

Main Results:

• Serum CFH levels were significantly elevated in MS patients compared to healthy controls (P < 0.05).
• No significant differences were observed in the frequency of CFH Tyr402 His genotypes or alleles between MS patients and controls.
• Elevated serum CFH suggests a potential association with multiple sclerosis risk.

Conclusions:

• Serum complement factor H levels may be associated with an increased risk of developing multiple sclerosis.
• The CFH Tyr402 His gene polymorphism does not appear to be a significant risk factor for MS in the studied Egyptian population.