Accurate quantification of fourteen normal bone marrow cell subsets in infants to the elderly by flow cytometry. Issue 5 (21st September 2018)

• Record Type: Journal Article
• Authors: Pont, Julie; Souvignet, Alice; Campos, Lydia; Plesa, Adriana; Bulabois, Bénédicte; Pernollet, Martine; Raskovalova, Tatiana; Dumestre‐Perard, Chantal; Cesbron, Jean‐Yves; Jacob, Marie‐Christine
• Is Part Of: Cytometry. Volume 94:Issue 5(2018)
• Page Start: 783
• Page End: 792
• Publication Date: 2018-09-21
• Subjects: Bone marrow -- leucocyte subset frequencies -- age -- flow‐cytometry -- hemodilution; Flow cytometry -- Diagnostic use -- Periodicals; Cytodiagnosis -- Periodicals; 616.07582
• DOI: 10.1002/cyto.b.21643
• Languages: English
• ISSNs: 1552-4949

Abstract

Abstract : Background: Studies of normal bone marrow (BM) cell composition by flow cytometry are scarce. Presently, we aimed to quantify 14 cell subsets from infants to elderly patients. Methods: Cell subsets in BM samples from 180 individuals without morphologically abnormal leukocytes were analyzed using a single combination of eight antibodies: CD3/CD10/CD38/ CD19/CD36/CD16/CD34/CD45. Results: By comparison with the Holdrinet score, we first validated the immature granulocyte/neutrophil (IGRA/N) ratio as a readily obtainable criterion of BM sample purity in 145 cases. Then, the 115 highly pure samples were selected (IGRA/N ≥ 1.2) and analyzed according to age group. CD34+ myeloblasts became progressively more infrequent with age: median 1.4% in infancy to 0.5% in the elderly. Neutrophils increased: 10.7% to 22.8%; all other myeloid subsets, IGRA, eosinophils, basophils and monocytes remained stable: respectively 40.3% to 46.7%, 2.0% to 2.8%, 0.2% to 0.3%, and 4.4% to 5.0% throughout life. Erythroblasts were lower in children (8.4% to 10.3%) than in adults (12.5% to 15.1%). For lymphoid cells, hematogones and transitional B‐cells decreased: 15.5% to 0.6% and 3.6% to 0.1%, respectively; mature lymphocytes remained stable: B‐cells: 1.4% to 2.8%, T‐cells: 5.8% to 8.7%, and NK‐cells: 0.7% to 1.4%. Plasma cells varied slightly: 0.1% to 0.5%. Differences of about 40% were seen in moderately pure (IGRA/N: 0.5 to 1.2) BM samples. Conclusion: We thus provide the first values for 14 myeloid and lymphoid subsets characterizing BM cell composition in 5 age ranges. They should provide important information when screening patients for hematological disorders or abnormal bone marrow development. © 2018 International Clinical Cytometry Society