The reference ranges and characteristics of lymphocyte parameters and the correlation between lymphocyte parameters
1Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Insights
This study establishes normal ranges for immune cell parameters and identifies key indicators of lymphocyte function and potential. These findings offer insights into maintaining a healthy immune system.
Area of Science:
- Immunology
- Clinical Laboratory Science
Background:
- Assessing immune function is crucial for disease recognition but remains challenging in clinical practice.
- Lymphocyte parameters (number, phenotype, IFN-γ production) are key indicators of immune status.
Purpose of the Study:
- To establish normal ranges for lymphocyte parameters using a multi-center study.
- To identify key indicators reflecting current lymphocyte function and potential.
- To correlate immune parameters with routine laboratory and clinical indicators.
Main Methods:
- A 10-center study investigating lymphocyte parameters and routine laboratory indicators.
- Standard methods were used for lymphocyte analysis.
- Cluster analysis and correlation analysis were employed to identify relationships.
Main Results:
- Normal ranges for lymphocyte parameters were established, showing no significant inter-center differences.
- Cluster analysis identified three distinct immunological status clusters linked to clinical indicators (e.g., BMI, albumin, age).
- Albumin correlated positively with lymphocyte potential, while BMI and triglycerides correlated with current function; CD8+ T cell loss increased with age.
Conclusions:
- Normal ranges for lymphocyte parameters have been successfully established across different regions.
- Key indicators for assessing lymphocyte function and potential were elucidated.
- This research provides valuable insights for maintaining immune health.
Background:
Assessment of immune function is of key importance in recognition of disease or healthy status, which still faces challenge in clinical practice. We conducted a 10-center study to investigate lymphocyte parameters including the number, phenotype and IFN-γ-producing ability, and routine laboratory indicators by using the standard method.
Results:
Although the heterogeneity of lymphocyte parameters was widely found, we have established the normal ranges of these parameters by using pooled data which showed no significant difference among centers. Cluster analysis of 35 parameters found 3 interesting clusters which represented different immunological status. Cluster 1 (parameters: IFN-γ+CD4+ T cell percentage and IFN-γ+CD8+ T cell percentage) represented current lymphocyte function, which was associated with indicators such as body mass index and red blood cell; Cluster 2 (parameters: NK cell number and CD45RA+CD4+ T cell percentage) represented potential of lymphocytes, which was associated with indicators such as albumin and high-density lipoprotein. Cluster 3 (parameters: HLA-DR+CD8+ T cell percentage) represented inflammatory status, which was associated with indicators such as low-density lipoprotein, globulin and age. Correlation analysis found that nutritional indicator albumin is significantly positively correlated with lymphocyte potential. Triglyceride and body mass index were positively correlated with current lymphocyte function rather than lymphocyte potential. The loss of CD8+ T cells was extremely pronounced with increasing age and was one of the most important factors to cause immunosenescence, which may be associated with increased glucose.
Conclusions:
We have established the normal ranges of lymphocyte parameters in different areas. This study elucidates the key indicators used to reflect the current function or potential of lymphocytes, which may provide a valuable clue for how to keep immunity healthy.
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