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[Value of analyzing reticulocyte subpopulations in polycythemia].
Sangre (Barc). 1997 Oct; 42(5):383-6.S

Abstract

OBJECTIVE

The evaluation of the RNA content in reticulocytes by means of flow cytometry allows us to differentiate three reticulocyte populations by their degree of maturity: LFR, MFR and HFR. We have studied the value of those reticulocyte subpopulations for the differential diagnosis in polycythemia.

PATIENTS AND METHODS

We have studied 25 polycythemia patients, 12 of these were diagnosed of polycythemia vera (PV) and 13 of secondary polycythemia (PS). Reticulocytes and their different reticulocyte populations were automatically analyzed by flow cytometry using the Sysmex R-2000 analyzer (TOA Corp. Japan). We calculated the reticulocyte maturity index (RMI) which is the percentage of the equation (MFR + HFR) x 100/LFR (9). We have also studied hemogram parameters (Hct, Hb, VCM, HCM, RDW, leukocytes and platelets), iron metabolism (serum iron, ferritin, transferrin and transferrin saturation index), and erythropoietin levels. The findings were statistically analyzed using the Pearson correlation test and the comparison tests of averages of independent samples (Student's t).

RESULTS

Patients with PV present high RMI and MFR + HFR (medium and high fluorescence reticulocytes) as compared with secondary polycythemia . We did not find any correlation between RMI and other analytical parameters (erythropoietin, ferritin, serum iron, transferrin), except for the transferrin saturation index (TSI), with a correlation factor r: 0.5486 for p < 0.05.

CONCLUSION

This higher proportion of younger reticulocytes in PV might be explained because they are a parameter that would reflect the expansion of erythropoietic bone progenitor cells, which would be more increased in PV than in PS. However, another possible explanation would consist in the existence of associated ferropenia in PVs, which lead to an increase in cytoplasmic levels of transferrin receptor mRNA.

Authors+Show Affiliations

Servicio Hematología y Hemoterapia, Hospital Universitario San Carlos, Madrid.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
English Abstract
Journal Article

Language

spa

PubMed ID

9424738

Citation

Ataulfo González, F, et al. "[Value of Analyzing Reticulocyte Subpopulations in Polycythemia]." Sangre, vol. 42, no. 5, 1997, pp. 383-6.
Ataulfo González F, Bermejo A, Sánchez J, et al. [Value of analyzing reticulocyte subpopulations in polycythemia]. Sangre (Barc). 1997;42(5):383-6.
Ataulfo González, F., Bermejo, A., Sánchez, J., Anguita, E., & Villegas, A. (1997). [Value of analyzing reticulocyte subpopulations in polycythemia]. Sangre, 42(5), 383-6.
Ataulfo González F, et al. [Value of Analyzing Reticulocyte Subpopulations in Polycythemia]. Sangre (Barc). 1997;42(5):383-6. PubMed PMID: 9424738.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Value of analyzing reticulocyte subpopulations in polycythemia]. AU - Ataulfo González,F, AU - Bermejo,A, AU - Sánchez,J, AU - Anguita,E, AU - Villegas,A, PY - 1998/1/10/pubmed PY - 1998/1/10/medline PY - 1998/1/10/entrez SP - 383 EP - 6 JF - Sangre JO - Sangre (Barc) VL - 42 IS - 5 N2 - OBJECTIVE: The evaluation of the RNA content in reticulocytes by means of flow cytometry allows us to differentiate three reticulocyte populations by their degree of maturity: LFR, MFR and HFR. We have studied the value of those reticulocyte subpopulations for the differential diagnosis in polycythemia. PATIENTS AND METHODS: We have studied 25 polycythemia patients, 12 of these were diagnosed of polycythemia vera (PV) and 13 of secondary polycythemia (PS). Reticulocytes and their different reticulocyte populations were automatically analyzed by flow cytometry using the Sysmex R-2000 analyzer (TOA Corp. Japan). We calculated the reticulocyte maturity index (RMI) which is the percentage of the equation (MFR + HFR) x 100/LFR (9). We have also studied hemogram parameters (Hct, Hb, VCM, HCM, RDW, leukocytes and platelets), iron metabolism (serum iron, ferritin, transferrin and transferrin saturation index), and erythropoietin levels. The findings were statistically analyzed using the Pearson correlation test and the comparison tests of averages of independent samples (Student's t). RESULTS: Patients with PV present high RMI and MFR + HFR (medium and high fluorescence reticulocytes) as compared with secondary polycythemia . We did not find any correlation between RMI and other analytical parameters (erythropoietin, ferritin, serum iron, transferrin), except for the transferrin saturation index (TSI), with a correlation factor r: 0.5486 for p < 0.05. CONCLUSION: This higher proportion of younger reticulocytes in PV might be explained because they are a parameter that would reflect the expansion of erythropoietic bone progenitor cells, which would be more increased in PV than in PS. However, another possible explanation would consist in the existence of associated ferropenia in PVs, which lead to an increase in cytoplasmic levels of transferrin receptor mRNA. SN - 0036-4355 UR - https://www.unboundmedicine.com/medline/citation/9424738/[Value_of_analyzing_reticulocyte_subpopulations_in_polycythemia]_ L2 - https://antibodies.cancer.gov/detail/CPTC-PVR-1 DB - PRIME DP - Unbound Medicine ER -