Related Experiment Videos
Quantitation of serum complement components and plasma C3d in patients with malignant lymphoma: relation to the stage
Insights
Patients with Hodgkin
Area of Science:
- Immunology
- Oncology
Background:
- Lymphoma, including Hodgkin's disease and non-Hodgkin malignant lymphoma, can affect immune function.
- The complement system plays a crucial role in immune responses and inflammation.
Purpose of the Study:
- To investigate complement system activity and component levels in patients with lymphoma.
- To explore the relationship between complement alterations and disease characteristics.
Main Methods:
- Measured total hemolytic complement activity (CH 50) in patients.
- Assessed levels of complement components (C4, C3, factor B) and C3d.
- Utilized C1q binding assay to detect immune complexes.
Main Results:
- Elevated CH 50 values were observed in nearly all patients.
- Increased serum C4, C3, and factor B levels were found in a significant proportion of patients.
- Elevated C3d levels and C3 hypercatabolism were noted, correlating with disease extent rather than immune complexes or symptoms.
Conclusions:
- Patients with lymphoma exhibit significant alterations in complement activity and component levels.
- C3 hypercatabolism in lymphoma is associated with disease progression.
- Further research is warranted to understand the clinical implications of these complement changes in lymphoma.
Abstract:
Total hemolytic complement activity (CH 50) and complement component levels were measured in 27 patients with Hodgkin's disease and 31 patients with non-Hodgkin malignant lymphoma. CH 50 values were higher than normal in almost all the patients. Increased levels of serum C4, C3 and factor B were observed in 62%, 31% and 19% of these patients, respectively. However, plasma concentration of C3d, a breakdown product of C3, was elevated in 29% of the cases. The hypercatabolism of C3 was not closely associated with the presence of circulating immune complexes, as assessed by the C1q binding assay, nor with the presence of general symptoms in the patients. On the contrary, it appeared to be in relation with the extent of the malignant disease.