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Evaluation of phagocytic function of canine peripheral polymorphonuclear leucocytes by whole blood chemiluminescence
1Department of Veterinary Internal Medicine, Faculty of Agriculture, Miyazaki University, Japan.
Insights
This study demonstrates a rapid method to assess polymorphonuclear leucocyte (PMN) function in beagle dog whole blood using chemiluminescence. The technique provides insights into phagocytic activity and opsonic capacity within 20 minutes.
Area of Science:
- Immunology
- Veterinary Medicine
- Cellular Biology
Background:
- Assessing polymorphonuclear leucocyte (PMN) function is crucial for understanding immune responses.
- Existing methods for evaluating PMN function can be time-consuming and complex.
Purpose of the Study:
- To establish a rapid and direct method for estimating PMN function in beagle dog whole blood.
- To utilize luminol-aided chemiluminescence (CL) for assessing phagocytic activity and opsonic capacity.
Main Methods:
- Direct analysis of whole blood (0.1 ml) using zymosan-induced, luminol-aided chemiluminescence.
- Measurement of peak CL counts, PMN numbers, and peak time for CL after zymosan addition.
- Determination of optimal temperature (around 13°C) for diluted whole blood storage.
Main Results:
- The method provides results within 20 minutes.
- Peak CL counts correlate with PMN phagocytic function.
- Peak time indicates opsonic activity.
Conclusions:
- This chemiluminescence assay offers a quick and informative approach to evaluate phagocytic cell function directly in whole blood.
- The method is suitable for assessing PMN phagocytic capacity and opsonic activity in beagle dogs.
Abstract:
Zymosan-induced and luminol-aided chemiluminescence (CL) of whole blood from beagle dogs was estimated for the function of polymorphonuclear leucocytes (PMNs). Whole blood (0.1 ml) was examined directly and results were obtained within 20 min. A phagocytic function of PMNs can be estimated from the peak CL counts and the number of PMNs in a specimen, and the opsonic activity can also be estimated by the peak time showing peak CL after the addition of non-opsonized zymosan. The optimal temperatures to keep diluted whole blood for the CL measurement was around 13 degrees C. Thus, this method offers information concerning the functions of phagocytic cells in whole blood.
