[Assessment of blood lymphocyte subpopulations by the immunoenzyme cytochemical PAP method using different fixatives]

Area of Science:

• Immunology
• Cell Biology
• Medical Diagnostics

Background:

• Accurate immunophenotyping of lymphocyte subpopulations is crucial for diagnosing and monitoring infectious diseases.
• Existing methods for preserving cell surface antigens can be harsh, leading to loss of critical diagnostic information.

Purpose of the Study:

• To modify the fixation method for immunocytochemical staining using para-aminophenasine (PAPh).
• To ensure the integrity of principal differentiation antigens on human peripheral blood lymphocyte surface membranes.

Main Methods:

• A modified fixation technique for cytologic material was developed.
• The method utilizes para-aminophenasine (PAPh) for immunocytochemical staining.
• Ensured preservation of lymphocytic surface membrane differentiation antigens.

Main Results:

• The modified fixation method allows for safe immunocytochemical staining with PAPh.
• The integrity of key differentiation antigens on lymphocyte surface membranes is maintained.
• The method proved effective in preserving cellular material for analysis.

Conclusions:

• The developed PAPh fixation method is a safe and effective technique for preserving lymphocyte surface antigens.
• This method is recommended for immunophenotypic analysis of lymphocyte subpopulations in HIV-infected individuals and patients with AIDS.
• The technique supports practical studies in various infectious diseases requiring detailed immunophenotyping.