E rosette-forming lymphocytes in multiple sclerosis patients. Basic protein stimulation of rosette-forming cells

Area of Science:

• Immunology
• Neuroscience
• Cellular Biology

Background:

• T lymphocytes play a crucial role in immune responses, including those potentially implicated in neurological disorders.
• The sheep red blood cell (SRBC) rosetting technique is used to identify and quantify T cells.
• Understanding T cell activity in multiple sclerosis (MS) is important for elucidating disease mechanisms.

Purpose of the Study:

• To investigate T cell populations, specifically "total", "active", and "avid" T cells, in patients with multiple sclerosis (MS).
• To assess T cell hypersensitization to myelin basic protein (MBP) in MS patients compared to other neurological disorders (OND) and healthy controls.
• To evaluate the utility of the active E rosette test in detecting immune responses in MS.

Main Methods:

• Enumeration of "total" and "active" T cells using the sheep red blood cell (SRBC) rosetting technique.
• Quantification of "avid" T cells, defined as those binding more than three SRBCs.
• Assessment of hypersensitization to myelin basic protein (MBP) via the active E rosette test in MS, OND, and healthy control groups.

Main Results:

• No significant differences were found in the percentages of "total" and "active" T lymphocytes between MS patients, OND patients, and healthy controls.
• A significantly increased number of "avid" T cells was observed in MS patients compared to controls.
• The active E rosette test indicated hypersensitization to myelin basic protein in 50% of MS patients and 31% of OND patients, with most healthy controls showing a negative response.

Conclusions:

• While overall T cell counts do not differ, an increase in "avid" T cells suggests a specific immune cell characteristic in MS.
• Hypersensitization to myelin basic protein, detected by the active E rosette test, is present in a notable proportion of MS patients.
• These findings may contribute to understanding the immunopathological aspects of multiple sclerosis.