PMID- 30139310 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1607-8454 (Electronic) IS - 1024-5332 (Linking) VI - 24 IP - 1 DP - 2019 Dec TI - Comparative study of bone marrow and blood plasma levels of IL-2 in aplastic anaemia and their relationship with disease severity. PG - 84-88 LID - 10.1080/10245332.2018.1512391 [doi] AB - OBJECTIVES: Interleukin-2 (alias: IL-2, TCGF, Lymphokine), a type of interleukin, is also a potent signalling molecule in the signalling cascade of the immune-mediated activation of T Lymphocytes leading to the destruction of haematopoietic stem cell (HSC) which is the basis of acquired aplastic anaemia (AAA). The objective was to study the association of IL-2 in the bone marrow plasma (BMP) and peripheral blood plasma (PBP) in AAA patients. METHODS: A total of 52 BMP and PBP-paired samples (both from the same patients) was collected from the confirmed AAA patients and 10 healthy individuals. The level of IL-2 was measured by the quantitative enzyme-linked immunosorbent assay (ELISA). The Mann-Whitney U test was used for statistical analysis. RESULTS: Significantly increased level of IL-2 was observed in the BMP than PBP of AAA patients. The level of IL-2 in PBP and BMP was found to be very low in the control cases. Considerably increased levels of IL-2 were found in the PBP and BMP of AAA patients as compared to controls (48.54 +/- 21.89 vs. 1.99 +/- 1.25 p-value < 0.00001) and (75.33 +/- 41.9 vs. 3.12 +/- 1.82; p-value < 0.00001) respectively. Among these patients, the IL-2 levels were higher in patients with Very Severe Aplastic Anaemia (VSAA) and Severe Aplastic Anaemia (SAA) than those with Non-severe Aplastic Anaemia (NSAA) in the PBP (65.6 +/- 23.61 vs. 31.72 +/- 7.64; p-value 0.00338) and (45.37 +/- 16.25 vs. 31.72 +/- 7.64; p-value 0.01468) respectively. Again the IL-2 levels were higher in patients with VSAA and SAA than those with NSAA in the BMP (115.01 +/- 38.91 vs. 38.32 +/- 19.49; p-value < 0.00001) and (66.44 +/- 23.34 vs. 38.32 +/- 19.49; p-value 0.0006). The IL-2 level was higher in VSAA than SAA in PBP (65.6 +/- 23.61vs. 45.37 +/- 16.25; p-value 0.0114) and BMP (115.01 +/- 38.91 vs. 66.44 +/- 23.34; p-value 0.00044). CONCLUSION: This study emphasized on the bone marrow and blood plasma levels of IL-2 in aplastic anaemia and their relationship with disease severity. The results indicate towards the fact that IL-2 may have an important association with the marrow failure of AAA patients and thus can help in disease development. Further study is necessary for better understanding. FAU - De, Rajib AU - De R AD - a Haematology , Nil Ratan Sircar Medical College and Hospital , Kolkata , India. FAU - Dutta, Atreyee AU - Dutta A AD - b Genetics , Vivekananda Institute of Medical Sciences , Kolkata , India. FAU - Dolai, Tuphan Kanti AU - Dolai TK AD - a Haematology , Nil Ratan Sircar Medical College and Hospital , Kolkata , India. FAU - Ghosh, Kakoli AU - Ghosh K AD - b Genetics , Vivekananda Institute of Medical Sciences , Kolkata , India. FAU - Halder, Ajanta AU - Halder A AD - b Genetics , Vivekananda Institute of Medical Sciences , Kolkata , India. LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article DEP - 20180823 PL - England TA - Hematology JT - Hematology (Amsterdam, Netherlands) JID - 9708388 RN - 0 (IL2 protein, human) RN - 0 (Interleukin-2) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Anemia, Aplastic/*blood/pathology MH - Bone Marrow/*metabolism/pathology MH - Child MH - Child, Preschool MH - Female MH - Humans MH - Interleukin-2/*blood MH - Male MH - Middle Aged MH - *Severity of Illness Index OTO - NOTNLM OT - Interleukin-2 OT - acquired aplastic anaemia OT - blood plasma OT - bone marrow plasma OT - destruction of stem cell OT - disease severity of aplastic anaemia OT - enzyme-linked immunosorbent assay EDAT- 2018/08/25 06:00 MHDA- 2018/12/12 06:00 CRDT- 2018/08/25 06:00 PHST- 2018/08/25 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/08/25 06:00 [entrez] AID - 10.1080/10245332.2018.1512391 [doi] PST - ppublish SO - Hematology. 2019 Dec;24(1):84-88. doi: 10.1080/10245332.2018.1512391. Epub 2018 Aug 23.