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| Content Provider | PubMed Central |
|---|---|
| Author | Campioni, Diana Paola, Secchiero Corallini, Federica Melloni, Elisabetta Capitani, Silvano Lanza, Francesco Zauli, Giorgio |
| Copyright Year | 2005 |
| Abstract | Myelodysplastic syndromes (MDS) are characterized by impaired erythropoiesis, possibly caused by proapoptotic cytokines. We focused our study on the cytokine TRAIL (TNF-related apoptosis-inducing ligand), which has been shown to exhibit an anti-differentiation activity on erythroid maturation. Immunocytochemical analysis of bone marrow mononuclear cells (BMMC) showed an increased expression of TRAIL in MDS patients with respect to acute myeloid leukemia (AML) patients and normal BM donors. TRAIL expression was increased predominantly in myeloid precursors of granulocytic lineage and in a subset of monocytes and pro-erythroblasts. Significant levels of soluble TRAIL were released in 21 of 68 BMMC culture supernatants from MDS patients. On the other hand, TRAIL was detected less frequently in the culture supernatants of AML (4 of 33) and normal BMMC (0 of 22). Analysis of peripheral blood parameters revealed significantly lower levels of peripheral red blood cells and hemoglobin in the subset of patients whose BMMC released TRAIL in culture supernatants compared to the subgroup of patients who did not release TRAIL. Moreover, TRAIL-positive BMMC culture supernatants inhibited the differentiation of normal glycophorin A+ erythroblasts generated in serum-free liquid phase. Thus, increased expression and release of TRAIL at the bone marrow level is likely to impair erythropoiesis and to contribute to the degree of anemia, the major clinical feature of MDS. |
| Related Links | http://dx.doi.org/10.1016/s0002-9440(10)62277-8 |
| Ending Page | 563 |
| Page Count | 7 |
| Starting Page | 557 |
| File Format | |
| ISSN | 00029440 |
| e-ISSN | 15252191 |
| Journal | The American Journal of Pathology |
| Issue Number | 2 |
| Volume Number | 166 |
| Language | English |
| Publisher | American Society for Investigative Pathology |
| Publisher Date | 2005-02-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Investigative Pathology |
| Subject Keyword | Pathology and Forensic Medicine Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pathology and Forensic Medicine |
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