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Published on: September 16, 2011
Histamine immunocytochemistry: a new method for detection of basophils in peripheral blood
H H Jacobi1, O Johansson, Y Liang
1Allergy Unit 7511, National University Hospital, Tagensvej 20, DK-2200, Copenhagen, Denmark.
Insights
A new histamine immunocytochemistry method effectively stains basophils in peripheral blood. This technique uses specific fixation and antibody incubation, enabling detailed analysis with microscopy and flow cytometry for human basophil research.
Area of Science:
- Immunology
- Cell Biology
- Hematology
Background:
- Basophils are crucial immune cells involved in allergic responses and inflammation.
- Identifying and quantifying basophils is essential for understanding various immunological conditions.
- Current methods for basophil identification can be limited in specificity and ease of use.
Purpose of the Study:
- To develop and validate a novel immunocytochemical staining method for histamine in human basophils.
- To assess the specificity and utility of histamine immunocytochemistry for basophil analysis.
- To explore the compatibility of this method with existing immunocytochemical techniques.
Main Methods:
- Leukocytes were fixed using 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (CDI).
- Fixed cells were incubated with antisera against histamine conjugated to carrier proteins via CDI.
- Stained cells were analyzed using fluorescence microscopy and flow cytometry.
- Histamine immunocytochemistry was combined with conventional immunocytochemistry using cell surface antigen antibodies.
Main Results:
- The developed histamine immunocytochemistry method specifically stained basophils in peripheral blood.
- Stained basophils were successfully visualized and quantified using fluorescence microscopy and flow cytometry.
- The technique demonstrated compatibility with conventional immunocytochemistry for multi-parameter analysis.
Conclusions:
- Histamine immunocytochemistry provides a specific and effective means to identify and study human basophils.
- This method enhances the ability to analyze basophil populations in various research and clinical settings.
- Histamine immunocytochemistry is a valuable tool for future investigations into basophil function and pathology.
Abstract:
We report that basophils in peripheral blood can be stained using histamine immunocytochemistry. The staining is based on the fixation of leucocytes with 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (CDI) and the subsequent incubation of these cells with antisera raised against histamine conjugated to different carrier proteins using CDI. The staining appears to be specific for basophils and stained cells can be examined using both fluorescence microscopy and flow cytometry. In addition, histamine immunocytochemistry can be combined with conventional immunocytochemistry by incubating leucocytes with antibodies to cell surface antigens prior to or following fixation of the cells with CDI. Thus, histamine immunocytochemistry may be a valuable tool in future studies of human basophils.
