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Symeonidis A, Zikos P, Galanopoulos A, Kotsianidis I, Kouraklis A, Terpos E, Protopapa M, Papadaki H, Lambropoulou V, Aktypi A, Bakarakos P, Michalopoulou S, Anastasiadis A, Michalis E, Zoumbos N. 67 Response to ESA treatment in patients with MDS: Determination of a predictive score, from a retrospective analysis of 669 patients. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70069-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Galanopoulos A, Aggelidis A, Gogos D, Megalakaki A, Kotsianidis I, Dimou M, Panagiotidis P, Zoumbos N, Anagnostopoulos N, Voulgarelis M, Papadaki H, Symeonidis A. 294 Prognostic significance of beta 2 microglobulin in survival and transformation to acute myelogenous leukemia in patients with myelodysplastic syndrome. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70296-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lagadinou ED, Marangos M, Liga M, Panos G, Tzouvara E, Dimitroulia E, Tiniakou M, Tsakris A, Zoumbos N, Spyridonidis A. Human herpesvirus 6-related pure red cell aplasia, secondary graft failure, and clinical severe immune suppression after allogeneic hematopoietic cell transplantation successfully treated with foscarnet. Transpl Infect Dis 2011; 12:437-40. [PMID: 20561301 DOI: 10.1111/j.1399-3062.2010.00515.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Human herpesvirus 6 (HHV-6) is frequently detected after allogeneic hematopoietic cell transplantation (allo-HCT); however, the clinical interpretation of HHV-6 viremia in a transplant patient is challenging as it may signify asymptomatic reactivation, chromosomal integration of the virus genome in the donor or recipient with no clinical significance, or severe HHV-6 disease. Here we present a case of HHV-6 disease after allo-HCT presenting as pure red cell aplasia, secondary graft failure, and severe immunosuppression causing multiple severe bacterial super-infections. Examination of pre-transplant patient and donor samples as well as serial determination of HHV-6 DNA copy numbers after transplantation were necessary to definitively interpret HHV-6 viremia as active HHV-6 infection with a causative role in pancytopenia and immune suppression. Foscarnet treatment resulted both in viral load decline and disappearance of HHV-6-related bone marrow suppression and predisposition to severe infections. Clinicians should be aware of the wide array of clinical manifestations and the diagnostic pitfalls of post-transplant HHV-6 disease. These issues are extremely challenging, as they may result either in dangerous underestimation of HHV-6 disease or in the institution of unnecessary antiviral therapy. Late bone marrow aplasia and late severe infections after allo-HCT without other obvious causes may be HHV-6 related.
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Affiliation(s)
- E D Lagadinou
- Department of Internal Medicine, Patras University Medical Center, Rio/Patras, Greece
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Symeonidis A, Liga M, Triantafyllou E, Kouraklis A, Tiniakou M, Karakantza M, Spyridonidis A, Zoumbos N. Successful mobilization with plerixafor and autologous hematopoietic SCT in a patient with refractory Hodgkin's lymphoma and Gaucher disease. Bone Marrow Transplant 2010; 46:1161-2. [DOI: 10.1038/bmt.2010.263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Spyridonidis A, Waterhouse M, Themeli M, Bertz H, Petrikkos L, Lagadinou E, Zoumbos N, Finke J. DNA Transfer From Donor To Host Cells As A Mechanism For Epithelial Chimerism And Genomic Alterations After Allogeneic Hematopoietic Cell Transplantation. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Spyridonidis A, Liga M, Karakantza M, Triantafyllou E, Zoumbos N. Low Dose Alemtuzumab In Vivo Confers An Efficient GvHD Prophylaxis Protocol In Sibling And Matched Unrelated HCT. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Solomou E, Tsanaktsi A, Fertakis V, Dallas K, Karambina S, Tiniakou M, Kourakli A, Micheva I, Matsouka P, Zoumbos N. P062 Overexpansion of Th17 and Th1/17 cells in patients with myelodysplastic syndromes. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70142-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Karabina S, Fertakis V, Athanasiou S, Thanopoulou E, Symeonidis A, Zoumbos N. YI5 Proteasome proteolytic activity in marrow CD34+ and peripheral blood mononuclear cells, from patients with MDS. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70079-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kouraklis A, Symeonidis A, Galanopoulos A, Kaiafa G, Tavernarakis I, Tsirakis G, Michali E, Tsaftaridis P, Loukidis K, Aggelidis A, Zoumbos N. P103 Iron chelation treatment in patients with myelodysplastic syndromes (MDS): the experience of the Hellenic MDS Study Group. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70184-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Voukelatou G, Thanopoulou E, Dallas K, Fertakis V, Dimopoulou A, Micheva I, Lampropoulou P, Kouraklis-Symeonidis A, Symeonidis A, Zoumbos N. P060 CD34+ marrow cells from MDS patients are characterized by higher levels of intracellular reactive oxygen species and inadequate antioxidant defences. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70140-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Constandinidou I, Kalivioti E, Fertakis V, Dallas C, Lampropoulou P, Tzouvara E, Zoumboulis P, Zoumbos N. C017 Expression of proteins p16INK4a, p53 and Bmi-1 in hematopoietic stem cells of patients with MDS. The role of cellular senescence. Leuk Res 2009. [DOI: 10.1016/s0145-2126(09)70055-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mougiou A, Pietrangelo A, Caleffi A, Kourakli A, Karakantza M, Zoumbos N. G80S-linked ferroportin disease: the first clinical description in a Greek family. Blood Cells Mol Dis 2008; 41:138-9. [PMID: 18420432 DOI: 10.1016/j.bcmd.2008.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Accepted: 03/06/2008] [Indexed: 01/01/2023]
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Stavrou E, Papapetrou E, Gianakopoulos A, Zoumbos N, Athanassiadou A. Comparative study of different promoters driving eGFP for use in episomal gene transfer in CD34+ cells. Blood Cells Mol Dis 2008. [DOI: 10.1016/j.bcmd.2007.10.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mougiou A, Androutsopoulos G, Karakantza M, Theodori E, Decavalas G, Zoumbos N. Inherited thrombophilia screening in Greek women with recurrent fetal loss. CLIN EXP OBSTET GYN 2008; 35:172-174. [PMID: 18754285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE The present study was designed to determine the prevalence of factor V Leiden (FVL), prothrombin gene G20210A (PTG) and methylenetetrahydrofolate reductase (MTHFR C677T) mutations in women from South-Western Greece with recurrent fetal loss (RFL) and negative personal thromboembolic history. MATERIALS AND METHODS 212 women with RFL and 181 women with at least two pregnancies with normal outcome and no history of pregnancy loss were investigated for the commonest thrombophilic mutations (FVL, PTG, MTHFR C677T). Comparisons between groups were performed by Pearson's chi-square test and odd ratios were calculated. RESULTS An abnormal genotype was detected in 49 women of the study group (23.1%) and in 41 women of the control group (22.6%). CONCLUSION Inherited thrombophilia screening is not indicated as an initial approach in Greek women with RFL and negative personal thromboembolic history.
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Affiliation(s)
- A Mougiou
- Department of Internal Medicine, Division of Hematology, University of Patras, Medical School, Rion, Greece
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Thanopoulou E, Pherson L, Grigorakaki T, Tsopra O, Lagadinou E, Zoumbos N. P024 PKCz involvement in the impaired SDF1a-mediated migration of marrow CD34+ cells from MDS patients. Leuk Res 2007. [DOI: 10.1016/s0145-2126(07)70094-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Symeonidis A, Giannakoulas N, Kouraklis-Symeonidis A, Michali E, Lambropoulou V, Anagnostopoulos N, Zoumbos N. P013 Chronic myelomonocytic leukemia (CMML): one disease with two phases or two different diseases? Leuk Res 2007. [DOI: 10.1016/s0145-2126(07)70083-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Symeonidis A, Kouraklis-Symeonidis A, Zikos P, Galanopoulos A, Psyllaki M, Aktypi A, Michalopoulou S, Michali E, Protopapa M, Pantelidou D, Papadaki E, Anagnostopoulos N, Zoumbos N. P140 Factors predicting for a favorable response among patients with myelodysplastic syndromes treated with erythropoietin ± G-CSF. Leuk Res 2007. [DOI: 10.1016/s0145-2126(07)70210-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Manola KN, Sambani C, Karakasis D, Baltathakis I, Zoumbos N, Symeonidis A. Allogeneic stem cell transplantation from donors with mosaic Turner syndrome. Bone Marrow Transplant 2006; 38:385-6. [PMID: 16915227 DOI: 10.1038/sj.bmt.1705456] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Manola KN, Harhalakis N, Symeonidis A, Rigana H, Stavropoulou C, Karakasis D, Tiniakou M, Baltathakis I, Stamouli MI, Zoumbos N, Pantelias GE, Sambani C. Constitutional pericentric inversion of chromosome 9 and hematopoietic recovery after allogeneic stem cell transplantation. Ann Hematol 2006; 85:611-5. [PMID: 16758191 DOI: 10.1007/s00277-006-0146-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Accepted: 05/08/2006] [Indexed: 12/01/2022]
Abstract
Recent reports suggest that hemopoietic stem cells with constitutional pericentric inversion of chromosome 9 [inv(9)] may be related to delayed engraftment or hemopoietic defect after stem cell transplantation (SCT). We conducted a retrospective study on five allogeneic SCT in which constitutional inv(9) was detected either in the donor or the recipient. The results showed that hematologic recovery was within the expected time range for all our patients. However, one patient exhibited decreasing blood counts between day +45 and +272 after transplantation, possibly due to protracted cytomegalovirus (CMV) infection and gansiclovir and imatinib treatment. Our findings suggest that constitutional inv(9) may not be associated with delayed hemopoietic recovery after SCT.
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Affiliation(s)
- K N Manola
- Laboratory of Health Physics and Environmental Hygiene, National Center for Scientific Research Demokritos, 15310 Aghia Paraskevi, Athens, Greece
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Symeonidis A, Kouraklis-Symeonidis A, Constantinidou I, Solomou E, Kougelou S, Vassilakos P, Zoumbos N. Increased CA-15.3 levels in the serum of patients with homozygous beta-thalassaemia and sickle cell/beta-thalassaemia. Br J Haematol 2006; 133:692-4. [PMID: 16704450 DOI: 10.1111/j.1365-2141.2006.06121.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Micheva I, Marinakis T, Repa C, Kouraklis-Symeonidis A, Vlacha V, Anagnostopoulos N, Zoumbos N, Symeonidis A. Dendritic cells in patients with type I Gaucher disease are decreased in number but functionally normal. Blood Cells Mol Dis 2006; 36:298-307. [PMID: 16533613 DOI: 10.1016/j.bcmd.2005.12.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2005] [Revised: 12/15/2005] [Accepted: 12/15/2005] [Indexed: 10/24/2022]
Abstract
Gaucher disease is a lysosomal storage disorder, in which undigested glucosylceramide is deposited in the cytoplasm of mature macrophages, which accumulate in the bone marrow and the reticuloendothelial system. Dendritic cells are bone marrow-derived cells, specialized for the uptake, processing, transport and presentation of antigens to T-lymphocytes. We investigated peripheral blood dendritic cell-precursors, as well as the potential of peripheral blood monocytes and bone marrow-derived progenitor cells, to differentiate into mature dendritic cells in 12 patients with type I Gaucher disease. Results of the 10 adult patients were compared with those of 10 healthy volunteers, matched for age and sex. Six patients were anemic and 9 were thrombocytopenic, but none had severe bone disease. Both myeloid and plasmacytoid dendritic cells of patients with Gaucher disease, as well as the yield of the monocyte-derived dendritic cells, obtained after GM-CSF and IL-4 stimulation, were found significantly decreased, when compared to controls (myeloid dendritic cells: 0.19 +/- 0.07% vs. 0.34 +/- 0.10%, P = 0.009, plasmacytoid dendritic cells: 0.17 +/- 0.12% vs. 0.39 +/- 0.13%, P = 0.004, monocyte-derived dendritic cells: 4.8 +/- 3.5% vs. 8.3 +/- 3.2%, P = 0.036). However, the immunophenotypic profile of dendritic cells, estimated by CD1a, CD40, CD54, CD80, CD83 and HLA-DR expression, the endocytic and allo-stimulatory capacity of the immature, as well as of the TNF-alpha- or lipopolysaccharite-stimulated mature monocyte-derived dendritic cells, was similar to those obtained by healthy controls. In addition, bone marrow-derived CD34+ cells differentiated in the presence of GM-CSF, SCF, TNF-alpha and IL-4 into mature dendritic cells that did not differ in number, phenotype and allo-stimulatory activity from those of controls. Our findings suggest that patients with Gaucher disease exhibit mainly quantitative defects of their dendritic cells' system, demonstrated by decreased circulating dendritic cell precursors of both myeloid and plasmacytoid type. This finding may contribute to the poor immune response against infectious agents and an impaired immune surveillance, associated with an increased risk of developing a neoplastic disease.
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Affiliation(s)
- I Micheva
- Hematology Division, Department of Internal Medicine, University of Patras Medical School, Rion, 261.10, Patras, Greece
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Athanassiou G, Moutzouri A, Kourakli A, Zoumbos N. Effect of hydroxyurea on the deformability of the red blood cell membrane in patients with sickle cell anemia. Clin Hemorheol Microcirc 2006; 35:291-5. [PMID: 16899945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Sickle cell disease is characterized by vaso-occlusive episodes, mainly in the small vessels, resulting in tissue ischemia, multi-organ failure, and, occasionally, death. Hydroxyurea (HU) is an agent with important and effective role in the treatment of patients suffering from this disease. The purpose of this study was to estimate the effect of HU on the deformability of the red blood cell's membrane (RBCM) in an effort to possibly improve the rheological properties of the RBCs of patients with sickle cell anemia (SCA), as well as to investigate the mechanical and rheological properties of these cells using micropipette and filtration techniques. The rigidity index, IR, which is a measure of cell rigidity and the elastic shear modulus, mu, which is a measure of cell's membrane deformability (CMd), of the RBCs from normal subjects, used as normal controls, were found significantly lower as compared to those of patients with SCA, regardless the treatment with HU. Patients under treatment with HU exhibited values better than those of untreated patients, in both, IR as well as mu, although still worse than the values of normal controls.
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Affiliation(s)
- G Athanassiou
- Laboratory of Biomedical Engineering, Department of Mechanical Engineering and Aeronautics, University of Patras, Greece.
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Mavrogianni D, Tsaftaridis P, Terpos E, Kourakli A, Papaioannou M, Roussou P, Meletis J, Papadaki E, Zoumbos N, Pangalis G, Viniou N. P-83 Expression of MIP-1α protein in 65 patients with myelodysplastic syndrome (MDS). A study of the Greek MDS study group. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80147-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Symeonidis A, Marinakis T, Papadakis H, Kouraklis A, Galanopoulos A, Roussou P, Terpos E, Viniou N, Polyclronopoulou S, Tsatalas C, Zoumbos N. P-36 Trisomy 8 alone in myelodysplasticsyndromes: Recognition of the common clinico-hematologic features from 109 patients. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80100-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Galanopoulos A, Symeonidis A, Papadaki H, Tsaftaridis P, Aktipi A, Roussou P, Protopappa M, Pappaioannou M, Anagnostopoulos N, Zoumbos N, Viniou N. P-11 Prognostic significance of deletion of the long arm of chromosome 20 in patients with myelodysplastic syndrome (MDS). A study of the Greek MDS study group. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80075-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Symeonidis A, Leotsinidis M, Kouraklis A, Zoumbos N. P-16 Determination of the response toanemia index (RAI) in patients with MDS. Recognition of this parameter as a major predictor of in vivo response to treatment with rh-EPO. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80080-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Symeonidis A, Lambropoulou V, Michalis E, Chatzivassilis A, Kouraklis A, Galanopoulos A, Matsouka P, Anagnostopoulos N, Iliakis P, Zoumbos N. P-15 Chronic myelomonocytic leukemia:IPSS best discriminates patients with worse prognosis, in both the dysplastic and the proliferative subtype. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80079-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Siagris D, Giannakoulas N, Christofidou M, Tsamandas A, Lekkou A, Thomopoulos K, Zoumbos N, Labropoulou-Karatza C. Virological, immunological and histological aspects in adult beta-thalassemic patients with chronic hepatitis C virus infection. Liver Int 2004; 24:204-9. [PMID: 15189270 DOI: 10.1111/j.1478-3231.2004.0919.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
OBJECTIVES Multitransfused adult beta-thalassemic patients constitute a population with high prevalence of hepatitis C virus (HCV) infection, because of transmission of HCV from infected blood donors prior to the introduction of anti-HCV screening. The aim of this study was to compare them with otherwise normal patients with HCV infection. METHODS Forty-two adult multitransfused beta-thalassemics and 49 otherwise normal patients of the same age, with chronic HCV infection were studied. Viral parameters, autoimmunity indices and liver histology were evaluated. RESULTS Serum HCV RNA levels were found significantly lower in thalassemic (median: 65,150 international units per milliliter (IU/ml); range: 3 059 380 IU/ml) than in non-thalassemic (NT) patients (median: 580,000 IU/ml; range: 10,956,000 IU/ml; P=0.001). The most prevalent genotype in thalassemic group was genotype 4 (32.4%) while in NT group was genotype 3a (59.2%). Cryoglobulins were detected in 8/42 (19%) thalassemic patients and in 12/49 (24.5%) NTs. Thalassemic patients had significantly lower levels of C3 and C4 components of complement and higher incidence of anti-nuclear antibodies than those without thalassemia. In patients with thalassemia a lower grading score was noted in liver biopsy compared with those without thalassemia (4.41+/-1.98 vs 5.38 +/- 2.09, P=0.038). On the contrary, thalassemic patients were found to have a higher staging score (3.08 +/- 1.51 vs 2.33 +/- 1.34, P=0.024). CONCLUSIONS Adult beta-thalassemic patients, compared with other patients with HCV infection, present lower necroinflammatory activity and lower viral load but higher staging score. Autoimmune features are marginally different. Age of acquiring the infection, iron overload and modulation of immune system by transfusions are the proposed causes of these differences.
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Affiliation(s)
- D Siagris
- Department of Internal Medicine, Patras University Hospital, Greece
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Symeonidis A, Kouraklis-Symeonidis A, Seimeni U, Galani A, Giannakoulas N, Fragopanagou E, Tiniakou M, Matsouka P, Zoumbos N. Ticlopidine-induced aplastic anemia: two new case reports, review, and meta-analysis of 55 additional cases. Am J Hematol 2002; 71:24-32. [PMID: 12221670 DOI: 10.1002/ajh.10150] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Ticlopidine-induced aplastic anemia (TIAA) is considered very uncommon. We present two new cases, and we review 55 additional cases from the literature. The first case concerns a 70-year-old man who developed severe aplastic anemia 7 weeks after treatment with 500 mg of ticlopidine daily. The patient sustained a severe septic episode, was treated with antibiotics and GM-CSF, and recovered the 14(th) day after ticlopidine withdrawal. The second was an 82-year-old man receiving ticlopidine for 2 years when, during a febrile episode, he was found neutropenic with marrow aplasia. Ticlopidine withdrawal and treatment with antibiotics, transfusions, and G-CSF helped him to recover. When the data of the 57 patients are evaluated, a reversible direct cytotoxic effect of ticlopidine on the pluripotent/bipotent hematopoietic progenitor stem cell is proposed. It is estimated that the real incidence if TIAA is higher, and many cases, initially presented as agranulocytosis +/- thrombocytopenia, might be true aplastic anemias, not proven by marrow aspiration or trephine biopsy. There is no effective monitoring to prevent this side effect. Recombinant growth factors appear not to help in shortening the neutropenic period.
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Affiliation(s)
- A Symeonidis
- Hematology Division, Department of Internal Medicine, University of Patras Medical School, Patras, Greece.
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Symeonidis A, Kouraklis-Symeonidis A, Grouzi E, Zolota V, Melachrinou M, Kourea K, Fragopanagou E, Giannakoulas N, Seimeni U, Tiniakou M, Matsouka P, Zoumbos N. Determination of plasma cell secreting potential as an index of maturity of myelomatous cells and a strong prognostic factor. Leuk Lymphoma 2002; 43:1605-12. [PMID: 12400603 DOI: 10.1080/1042819021000002938] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
According to the widely accepted myeloma staging system, the bulk of paraprotein is the main determinant of disease stage. However, myelomatous plasma cells differ considerably in their ability to synthesize and secrete monoclonal paraprotein. We determined plasma cell secreting potential (PCSP) as the amount of M-component, divided by the percentage of marrow plasmacytic infiltration, in 240 patients with myeloma, and correlated our results with chain isotype, plasma cell morphology, severity of bone disease, well-recognized prognostic factors, such as serum LDH, CRP, albumin and beta2-microglobulin, treatment response and overall survival. PCSP was higher in IgG than in other myeloma types, and was an almost constant parameter for each individual patient, in 134/166 cases. A > 10% decrease of PCSP in 26 patients was associated with disease aggressiveness and treatment failure. Patients with MGUS had significantly higher PCSP than those with myeloma of the same chain type. Higher PCSP was associated with stage I, absence of Bence-Jones proteinuria and indolent forms of disease with lower proliferating cell nuclear antigen (PCNA) positivity, serum LDH, alpha2-globulins, CRP and beta2-microglobulin and higher albumin levels. Conversely, patients with immature/plasmablastic morphology and those with severe bone disease had lower PCSP. Good responders to treatment had significantly higher PCSP than moderate and poor responders and PCSP was strongly correlated with overall survival in IgG and IgA myeloma. In conclusion, PCSP reflects the maturation status of myelomatous cells and therefore can be used as a prognostic factor, since patients with high secreting potential represent a lower malignancy group, in comparison to those with a low secreting potential.
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Affiliation(s)
- A Symeonidis
- Department of Internal Medicine, University of Patras Medical School, Greece.
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Matsouka P, Sambani C, Giannakoulas N, Symeonidis A, Zoumbos N. Polyploidy in acute promyelocytic leukemia without the 15:17 translocation. Haematologica 2001; 86:1312-3. [PMID: 11726325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Affiliation(s)
- P Matsouka
- University Hospital of Patras, Department of Internal Medicine, Hematology Division, Rio, Patras, 26500, Greece.
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32
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Symeonidis A, Papakonstantinou C, Seimeni U, Sougleri M, Kouraklis-Symeonidis A, Lambropoulou-Karatza C, Vagenakis A, Zoumbos N. Non hypoxia-related splenic infarct in a patient with sickle cell trait and infectious mononucleosis. Acta Haematol 2001; 105:53-6. [PMID: 11340255 DOI: 10.1159/000046534] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Splenic infarction in patients with sickle cell trait is usually related to hypoxic conditions, while non-hypoxia-related infarcts are extremely rare. We report on a case of a 17-year-old male patient, living at sea level, who developed a severe left upper quadrant abdominal pain during the course of a febrile episode. On physical examination he had a mildly palpable but extremely painful spleen. A spleen scan revealed 2 areas of impaired radionucleide distribution. Hepatic enzymes were moderately increased and the IgM anti-EBV antibodies positive. Hemoglobin electrophoresis revealed the presence of 42% of hemoglobin S. A probable diagnosis of splenic infarction was established in a patient with sickle cell trait, during the course of infectious mononucleosis. The patient was treated symptomatically. The conditions of splenic congestion induced by the EBV infection and the high-grade fever may have contributed to splenic sequestration and subsequent infarcts.
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Affiliation(s)
- A Symeonidis
- Hematology Division, University of Patras Medical School, PO Box 1045, 261.10 Patras, Greece.
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33
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Symeonidis A, Athanassiou G, Psiroyannis A, Kyriazopoulou V, Kapatais-Zoumbos K, Missirlis Y, Zoumbos N. Impairment of erythrocyte viscoelasticity is correlated with levels of glycosylated haemoglobin in diabetic patients. Clin Lab Haematol 2001; 23:103-9. [PMID: 11488849 DOI: 10.1046/j.1365-2257.2001.00366.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Erythrocytes from diabetic patients exhibit impaired viscoelastic properties when estimated by various methods. We determined erythrocyte filterability through 5-microm pores, in 51 patients with non-insulin-dependent diabetes mellitus, 18 healthy controls, 15 patients with homozygous beta-thalassemia and 15 with beta-thalassemia traits. The filtration measurements were made with a Hemorheometer, which uses the "initial flow rate" principle. To determine the Index of Rigidity (IR) of the red blood cells, we measured the passage time of white blood cell-free erythrocyte suspensions, 8% per volume, through the filter. Diabetic patients had significantly increased IR in comparison to healthy controls and to patients with beta-thalassemia trait, but not at the level found in patients with homozygous beta-thalassemia. In diabetic patients, a strong correlation between IR and the percentage of glycosylated haemoglobin was found (r=0.737, P < 0.0001), and a weaker one with serum unconjugated bilirubin (r=0.363, P=0.0097) and serum total lipids (r=0.321, P=0.0286). Patients with severe retinopathy also had significantly increased IR, in comparison to those with or without mild retinopathy. Anaemic diabetic patients, especially those with the anaemia of chronic disease, also had significantly increased IR in comparison to non-anaemic diabetics. No correlation between IR, MCV, MCH, MCHC, RDW, RBC morphology, serum LDH or the presence of erythrocyte inclusions after incubation with nitrous sodium solution was found. Our findings suggest that glycosylation of skeletal proteins probably contributes significantly to the increased membrane rigidity of diabetic erythrocytes.
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Affiliation(s)
- A Symeonidis
- Haematology Division, Department of Internal Medicine, University of Patras Medical School, 261 10, Patras, Greece.
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34
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Giamarellou H, Bassaris HP, Petrikkos G, Busch W, Voulgarelis M, Antoniadou A, Grouzi E, Zoumbos N. Monotherapy with intravenous followed by oral high-dose ciprofloxacin versus combination therapy with ceftazidime plus amikacin as initial empiric therapy for granulocytopenic patients with fever. Antimicrob Agents Chemother 2000; 44:3264-71. [PMID: 11083625 PMCID: PMC90190 DOI: 10.1128/aac.44.12.3264-3271.2000] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the present study was to obtain clinical experience with the use of high-dose ciprofloxacin as monotherapy for the treatment of febrile neutropenia episodes (granulocyte count, <500/mm(3)) compared to a standard regimen and to clarify whether ciprofloxacin administration may be switched to the oral route. In a prospective randomized study ciprofloxacin was given at 400 mg three times a day (t.i.d.) for at least 72 h followed by oral administration at 750 mg twice a day (b.i.d). That regimen was compared with ceftazidime given intravenously at 2 g t.i.d. plus amikacin given intravenously at 500 mg b.i.d. The frequency of successful clinical response without modification at the end of therapy was almost identical for ciprofloxacin (50% [62 of 124 patients]) compared with that for ceftazidime plus amikacin (50.8% [62 of 122 patients]) in an intent-to-treat analysis; the frequencies were 48.3% (57 of 118 patients) versus 49.6% (56 of 113 patients), respectively, in a per-protocol analysis (P values for one-sided equivalence, 0.0485 and 0.0516, respectively; delta = 10%), with no significant differences among patients with bacteremia and other microbiologically or clinically documented infections and fever of unknown origin. For 82 (66.1%) patients, it was possible to switch from parenteral ciprofloxacin to the oral ciprofloxacin, and the response was successful for 61 (74.4%) patients. The efficacies of the regimens against streptococcal bacteremias were 16.6% (one of six patients) for the ciprofloxacin group and 33.3% (one of three patients) for the combination group (it was not statistically significant), with one breakthrough streptococcal bacteremia observed among the ciprofloxacin-treated patients. Adverse events were mostly self-limited and were observed in 27 (20.6%) ciprofloxacin-treated patients and 26 (19.7%) patients who were receiving the combination. This study demonstrates that high-dose ciprofloxacin given intravenously for at least 3 days and then by the oral route is therapeutically equivalent to the routine regimen of intraveneous ceftazidime plus amikacin even in febrile patients with severe neutropenia (polymorphonuclear leukocyte count, <100 mm(3)). However, it is very important that before an empirical therapy is chosen each hospital determine bacteriologic predominance and perform resistance surveillance.
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Abstract
PURPOSE To investigate contrast sensitivity function in patients with beta-thalassemia major, after regular transfusion and chelation therapy. METHODS We measured contrast sensitivity at four spatial frequencies in 30 patients with beta-thalassemia major and in 30 matched normal control subjects. All subjects underwent an ophthalmic examination that included fluorescein angiography. The contrast sensitivity results from the two groups were compared between them. Patients' contrast sensitivity values were correlated to the variables age, duration of transfusion, duration of chelation therapy and serum ferritin levels, to select the important predictors. RESULTS Contrast sensitivity function in all beta-thalassemic patients was significantly lower (p<0.0001) compared to the normal control subjects, for all spatial frequencies tested. The most important predictor of contrast sensitivity loss was patients' age. CONCLUSION Contrast sensitivity testing can detect early changes in the visual function of beta-thalassemic patients and should be considered as a monitor for patients under chronic transfusion-chelation therapy.
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Affiliation(s)
- S P Gartaganis
- Department of Ophthalmology, University of Patras Medical School, Greece.
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36
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Zoumbos N, Konstantopoulos K, Tassiopoulos T, Hadjinikolaou P, Fessas P. An AIDS-like case in Greece in 1977 (short communication). Ups J Med Sci 1999; 104:177-8. [PMID: 10422219 DOI: 10.3109/03009739909178960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Zoumbos
- University of Athens School of Medicine, First Dept. of Int. Medicine, Mat Laikon Hoispital, Greece
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Beris P, Samii K, Darbellay R, Zoumbos N, Tsoplou P, Kourakli A, Preud'homme C, Fenaux P. Iron overload in patients with sideroblastic anaemia is not related to the presence of the haemochromatosis Cys282Tyr and His63Asp mutations. Br J Haematol 1999; 104:97-9. [PMID: 10027719 DOI: 10.1046/j.1365-2141.1999.01142.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Forty Caucasian patients with primary acquired sideroblastic anaemia (SA), were investigated for the presence of the Cys282Tyr and/or His63Asp mutation as possible cofactor(s) for iron overload. One patient was heterozygous for the Cys282Tyr mutation and 13 heterozygotes and one homozygote for the His63Asp mutation were found (no difference compared with controls). SA patients with normal codon 63 had a mean ferritin level of 923+/-815 microg/l whereas those with codon 63 mutation had 769+/-577 microg/l (P=0.64). We conclude that ineffective erythropoiesis with no associated mutation in the HFE gene can lead to iron overload in SA patients.
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Affiliation(s)
- P Beris
- Division of Haematology, University Hospitals, Geneva, Switzerland
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38
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Nicolaides C, Fountzilas G, Zoumbos N, Skarlos D, Kosmidis P, Pectasides D, Karabelis A, Giannakakis T, Symeonidis A, Papadopoulos A, Antoniou F, Pavlidis N. Diffuse large cell lymphomas: identification of prognostic factors and validation of the International Non-Hodgkin's Lymphoma Prognostic Index. A Hellenic Cooperative Oncology Group Study. Oncology 1998; 55:405-15. [PMID: 9732217 DOI: 10.1159/000011886] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Several clinical prognostic factors have been identified that predict treatment outcome in patients with diffuse large cell lymphomas. An International Non-Hodgkin's Lymphoma Prognostic Index (IPI) has been recently formulated. We tried to identify the clinical prognostic factors that predict treatment outcome in Greek patients with diffuse large cell lymphomas and validated the IPI in these patients. The possible prognostic variables for tumor response, relapse-free (RFS) and overall survival (OS) were analyzed in 239 consecutive patients treated with anthracycline-based chemotherapy regimens. In univariate analysis, factors associated with poor response were stages III-IV, performance status (PS) >/=2, spleen and bone marrow involvement, more than one extranodal site involved, increased lactate dehydrogenase (LDH) value, hemoglobin (Hb) <12 g/dl, albumin <3.5 g/dl, erythrocyte sedimentation rate (ESR) >50 mm/h. Multivariate analysis identified stage, PS, more than one extranodal site involved, increased LDH level, and ESR > 50 mm/h as the factors more predictive of poor response. For RFS, multiple Cox analysis found stages III-IV and bone marrow involvement to be statistically significant. For OS, multiple Cox analysis identified stage III-IV, PS >/=2, bone marrow involvement, more than one extranodal site involved, increased LDH level and ESR > 50 mm/h as negative prognostic factors. Patients stratified in the different risk groups of the IPI had a significantly different outcome regarding complete response (CR) rate, RFS and OS. In conclusion, although age >60 years was not recognized as an adverse factor in this analysis, our patients stratified in the different groups of the IPI had significant differences in CR rate, 2-year RFS and OS verifying the prognostic significance of the index. Bone marrow involvement and ESR > 50 mm/h, parameters that are not included in the IPI, adversely affected survival.
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Affiliation(s)
- C Nicolaides
- Department of Ioannina University Hospital, Ioannina, Greece
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Vlachojannis J, Tsakas S, Chinari E, Orphanos V, Zoumbos N, Kurz P. Increased endothelin-1 content in the platelets of hemodialysed patients. Clin Nephrol 1997; 48:185-90. [PMID: 9342491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Patients undergoing hemodialysis, present platelets (PLTs) with physiological dysfunction. Aggregated PLTs stimulate endothelin-1 (ET-1) secretion from endothelial cells. In turn, ET-1 abolishes PLT aggregation. The aim of this study was to determine any presence of ET-1 in the PLTs of hemodialysed patients and to compare its levels with normal subjects. Platelets, isolated from hemodialysed patients, revealed lower aggregation (76 +/- 13%) compared with healthy subjects (96 +/- 2%). Plasma ET-1 was increased in hemodialysed patients 23.5 +/- 3.2 fmol/ml, vs. 10.9 +/- 1.6 fmol/ml in normal subjects. Immunoreactive endothelin-1 was detected in the platelets of both groups. The intraplatelet ET-1 of hemodialysed patients was 13.8 +/- 3.1 fmol/mg protein, vs. 7.9 +/- 1.3 fmol/mg protein in normal individuals. Total RNA was isolated from platelets and reverse transcriptase-mediated polymerase chain reaction (RT-PCR) revealed no presence of the preproET-1 mRNA in either normal or hemodialysed platelets. This suggests that ET-1 is internalized from the plasma. In summary, platelets contain but do not express ET-1. The increased levels of ET-1 in the platelets of the hemodialysed patients may be partly responsible for their lower aggregation.
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Affiliation(s)
- J Vlachojannis
- Department of Internal Medicine-Nephrology, University Hospital, Patras, Greece
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40
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Kourakli-Symeonidis A, Tsoplou P, Thanopoulou E, Giakoumi G, Zoumbos N. 103 Extensive apoptosis of CD34+ marrow cells in patients with mds is related to low colony forming cell number and probably to hematopoietic deficiency. Leuk Res 1997. [DOI: 10.1016/s0145-2126(97)81315-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Symeonidis A, Kourakli-Symeonidis A, Onoufriou A, Zoumbos N. 66 Prognostic significance of serum protein electrophoresis pattern changes in patients with myelodysplastic syndromes. Leuk Res 1997. [DOI: 10.1016/s0145-2126(97)81280-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nikolopoulou V, Skoutelis A, Thomopoulos K, Salsaa B, Zoumbos N. An increased number of circulating gamma/delta TCR + T cells in patients with chronic viral hepatitis. FEMS Immunol Med Microbiol 1995; 10:115-8. [PMID: 7719278 DOI: 10.1111/j.1574-695x.1995.tb00019.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
There is evidence that gamma/delta TCR+T cells are specialized in recognizing different antigens, but their immunologic role as a second TCR is still unclear. The aim of this study was to investigate the percentage of absolute numbers of circulating gamma/delta TCR + T cells in patients with chronic viral hepatitis (CVH) and to compare with HBsAg+, HCV healthy carriers and healthy subjects. Forty nine patients with CVH-24 with chronic active (CAH) and 25 with chronic persistent hepatitis (CPH)-, 21 HBsAg+, 20 HCV asymptomatic carriers and 20 healthy subjects were enrolled in the study. Lymphocyte subsets were determined after incubation with monoclonal antibodies to T total (CD5) and T gamma/delta cells (TCR-gamma/delta-1) using immunofluorescence microscopy. An increased number of circulating gamma/delta TCR + T cells was found in patients with CVH in comparison with asymptomatic carriers and normal controls: this increase was more profound in patients with CAH, compared to CPH patients. These results indicate a correlation between circulating gamma/delta TCR + T cells in CVH patients and activity and chronicity of the disease.
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Affiliation(s)
- V Nikolopoulou
- Department of Internal Medicine, University Hospital of Patras, Greece
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43
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Nikolopoulou V, Katsakoulis E, Tsiotos P, Thomopoulos K, Salsaa B, Zoumbos N. Production of interleukin-1b and tumor necrosis factor--a by peripheral blood human mononuclear cells in active and inactive stages of ulcerative colitis. Z Gastroenterol 1995; 33:9-12. [PMID: 7886987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The production of Interleukin-1b (IL-1b) and Tumor necrosis factor a (TNF-a) by peripheral blood human mononuclear cells has been measured by an enzyme linked immunosorbent assay in 49 patients with ulcerative colitis (UC), 16 patients with first onset of the disease, 15 with untreated active disease, 18 patients with active UC under treatment and 14 healthy control subjects. IL-1b and TNF-a values were significantly higher (p < 0.001) in all groups of patients with active disease comparing to values after the achievement of remission or healthy controls. This increase was more profound in patients with pancolitis, in all groups with UC in active stage, when a comparison was made with rectosigmoiditis patients (p < 0.05). These results point towards a correlation between IL-1b and TNF-a production in UC patients and activity and extent of the disease.
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Affiliation(s)
- V Nikolopoulou
- Department of Internal Medicine, University Hospital, Patras, Greece
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44
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Athanassiadou A, Papachatzopoulou A, Zoumbos N, Maniatis GM, Gibbs R. A novel beta-thalassaemia mutation in the 5' untranslated region of the beta-globin gene. Br J Haematol 1994; 88:307-10. [PMID: 7803275 DOI: 10.1111/j.1365-2141.1994.tb05023.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A thymidine deletion at position +10 of the 5' untranslated region of the beta-globin gene was detected in a beta-thalassaemia intermedia patient carrying a beta(0)39 stop codon mutation on the other chromosome; this new mutation, +10(-T), was detected by automated fluorescent DNA sequencing and verified by dot-blot allele-specific hybridizations. The +10(-T) mutation is a 'silent carrier', is associated with a reduced amount of steady-state beta-globin mRNA, and establishes a connection between the 5' untranslated region of the beta-globin gene and the regulation of its expression.
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Affiliation(s)
- A Athanassiadou
- Department of Basic Sciences I, Medical Faculty, University of Patras, Greece
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45
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Gogos CA, Zoumbos N, Makri M, Kalfarentzos F. Medium- and long-chain triglycerides have different effects on the synthesis of tumor necrosis factor by human mononuclear cells in patients under total parenteral nutrition. J Am Coll Nutr 1994; 13:40-4. [PMID: 8157852 DOI: 10.1080/07315724.1994.10718369] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Lipid emulsions containing both long- and medium-chain triglycerides (LCT/MCT) have been used in total parenteral nutrition (TPN) regimens and seem to have certain advantages for seriously ill patients. The aim of the present study was to investigate the effect of lipid emulsions containing 100% LCT or 50% LCT/50% MCT on tumor necrosis factor (TNF) production by human mononuclear cells. STUDY DESIGN This was a prospective study, in which 20 malnourished patients were randomly allocated to receive either 100% LCT or 50% LCT/50% MCT for > 30 days. We measured TNF synthesis before initiation of TPN, as well as at 15 and 30 days during TPN. SETTING Departments of Medicine and Surgery, Patras University Medical School, Patras, Greece. PARTICIPANTS Members of the staff of the Departments of Medicine and Surgery, Patras University Medical School. RESULTS We found that TNF production was significantly (p < 0.01) elevated at 30 days in the LCT group, while no significant differences were detected in the LCT/MCT group. CONCLUSIONS It is concluded that long-term TPN formulas, where LCT have been partially replaced by MCT, do not change TNF synthesis by peripheral blood mononuclear cells, and this may be beneficial in seriously ill, cachectic patients.
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Affiliation(s)
- C A Gogos
- Department of Medicine, Patras University Medical School, Greece
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46
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Nikolopoulou V, Lafi T, Gogos C, Athanassiadou A, Zoumbos N. Lymphocytes from patients with chronic duodenal ulcer disease show enhanced proliferative response to beta-endorphin. Hepatogastroenterology 1993; 40:116-119. [PMID: 8509040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We investigated the effect of phytohemagglutinin and the neuropeptide beta-endorphin on the in vitro lymphocyte proliferative response in patients with chronic ulcer disease and upper gastrointestinal bleeding or in remission, acute ulcer or hemorrhagic gastritis, and in healthy persons without upper gastrointestinal disease. We found that the addition of beta-endorphin produced a strongly enhanced proliferative response to phytohemagglutinin in lymphocytes from patients with chronic ulcer disease, and in particular from those with recent bleeding.
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Affiliation(s)
- V Nikolopoulou
- Department of Internal Medicine, Patras University Medical School, Greece
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47
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Symeonidis A, Kourakli A, Katevas P, Perraki M, Tiniakou M, Matsouka P, Georgoulias V, Zoumbos N. Immune function parameters at diagnosis in patients with myelodysplastic syndromes: correlation with the FAB classification and prognosis. Eur J Haematol Suppl 1991; 47:277-81. [PMID: 1954986 DOI: 10.1111/j.1600-0609.1991.tb01571.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We determined nine immune function parameters at diagnosis in patients with myelodysplastic syndromes (MDS) and correlated the results with the FAB classification and prognosis by univariate and multivariate analyses. Patients with refractory anaemia (RA) and refractory anaemia with ring sideroblasts (RAS) tended to have a higher CD4/CD8 ratio and a lower amount of gamma-globulins and soluble interleukin-2 receptors in serum in comparison to those suffering from the other three subgroups of MDS. FAB classification, neutrophil and CD8+ T-cell number had the best discriminatory capacity for predicting survival less than 1 year, and FAB classification, neutrophil number and serum TNF levels were predictors for conversion to acute leukaemia. The frequent occurrence of infections, on the other hand, could be better predicted by the absolute numbers of neutrophils and CD4+ cells and by the skin test score.
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Affiliation(s)
- A Symeonidis
- Department of Internal Medicine, Patras University Medical School, Greece
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48
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Nikolopoulou V, Lafi T, Athanasiadou A, Zoumbos N. Enhanced proliferative response to beta-endorphin of phytohemagglutinin-activated lymphocytes from patients with ulcerative colitis. Z Gastroenterol 1991; 29:283-5. [PMID: 1926960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We investigated the effect of a known T cell mitogen, phytohemagglutinin (PHA) and the neuropeptide beta-endorphin on the in vitro lymphocyte proliferative response in patients with ulcerative colitis and in health persons. We found that patients with ulcerative colitis show enhanced reactivity to PHA, when incubated in the presence of beta-endorphin. The activity of the disease during the period of the investigation seemed to play no role, since lymphocytes from both patients in exacerbation or remission reacted in a similar manner.
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Affiliation(s)
- V Nikolopoulou
- Department of Internal Medicine, Patras University Medical School, Greece
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Symeonidis A, Zoumbos N. Defective autologous and allogeneic mixed lymphocyte reaction (MLR) in patients with primary myelodysplastic syndromes (MDS). Leuk Res 1991. [DOI: 10.1016/0145-2126(91)90436-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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