Related Experiment Videos
Decrease in memory (CDw29-high) cerebrospinal fluid cells from acute MS patients
1Institute of Infant Neuropsychiatry, Cagliari University, Italy.
Abstract:
The CD45R (2H4) and CDw29 (4B4) molecules are probably involved in the regulation of immunological memory: CD45R functionally defines naive or virgin cells (prior to activation by exposure to antigen), while CDw29 characterizes previously activated (memory) cells. By means of two-colour fluorescence analysis, we studied CD4 and CD8, CD45R and CD4 and CD8 CDw29 cells from the cerebrospinal fluid (CSF) of 27 acute (MSa), and 10 stable (MSs) multiple sclerosis (MS) patients. We also compared 17 patients affected with various non-inflammatory (OND) diseases of the central nervous system (CNS). The most striking finding was the increased percentage of CD4+CD29-, CD4+CD45R- and CD8+CD45R- cells and the decreased percentage of CD4-CDw29+ and CD8- CDw29+ subsets in MSa patients compared to OND and MSs populations. These data suggest a decrease in memory cells (CDw29+) during the acute phase of MS. The modulation of CDw29 receptor could play a role in the genesis of acute MS attacks.
Insights
In acute multiple sclerosis (MS), researchers observed a decrease in memory T-cells (CDw29+). This suggests that changes in CDw29+ cells may contribute to the development of acute MS attacks.
Area of Science:
- Immunology
- Neuroscience
- Cell Biology
Background:
- CD45R (2H4) and CDw29 (4B4) molecules are crucial for regulating immunological memory.
- CD45R identifies naive T-cells, while CDw29 identifies activated memory T-cells.
Purpose of the Study:
- To investigate the role of CD45R and CDw29 molecules in multiple sclerosis (MS).
- To analyze T-cell subsets in the cerebrospinal fluid (CSF) of patients with acute MS, stable MS, and other neurological diseases.
Main Methods:
- Two-color fluorescence analysis was used to study T-cell subsets (CD4, CD8, CD45R, CDw29) in CSF.
- Patient groups included acute MS (MSa), stable MS (MSs), and patients with other non-inflammatory neurological diseases (OND).
Main Results:
- Acute MS patients (MSa) showed a higher percentage of CD4+CD29-, CD4+CD45R-, and CD8+CD45R- cells compared to OND and MSs groups.
- A decreased percentage of CD4-CDw29+ and CD8-CDw29+ cells was observed in MSa patients.
Conclusions:
- The findings suggest a reduction in memory T-cells (CDw29+) during the acute phase of MS.
- Modulation of the CDw29 receptor may be implicated in the pathogenesis of acute MS relapses.