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Georgakopoulou VE, Gkoufa A, Makrodimitri S, Tsakanikas A, Basoulis D, Voutsinas PM, Karamanakos G, Eliadi I, Samara S, Triantafyllou M, Eleftheriadou I, Kampouropoulou O, Papageorgiou CV, Anastasopoulou A, Papalexis P, Trakas I, Trakas N, Spandidos DA, Steiropoulos P, Sipsas NV. Risk factors for the in‑hospital and 1‑year mortality of elderly patients hospitalized due to COVID‑19‑related pneumonia. Exp Ther Med 2024; 27:22. [PMID: 38125348 PMCID: PMC10728907 DOI: 10.3892/etm.2023.12310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/09/2023] [Indexed: 12/23/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is characterized by poor outcomes and a high mortality rate, particularly among elderly patients. Since the beginning of the pandemic, an older age has been recognized as a critical risk factor for disease severity, with increasing mortality rates in each decade of life. This phenomenon may be a consequence of a poor previous health status, with a higher prevalence of pre-existing comorbidities and a higher degree of frailty. The majority of studies on the outcomes and risk factors of elderly patients refer to the first waves of the pandemic and the predictors of in-hospital mortality in these patients. The aim of the present study was to provide a detailed description of the clinical characteristics and management of a cohort of elderly patients (≥65 years of age) who were hospitalized with COVID-19-related pneumonia in all phases of the pandemic, presenting their outcomes, and investigating predictors of in-hospital and out-of-hospital mortality over a period of 1 year in this particularly vulnerable population. A total of 1,124 elderly patients (603 males, 53.7%) with a mean age of 78.51±7.42 years and a median Charlson comorbidity index (CCI) of 5 were included in the study. Of these patients, 104 (9.3%) were hospitalized during the period of prevalence of the original strain Wuhan, 385 (34.3%) were hospitalized during the period of prevalence of the Alpha variant, 221 (19.7%) were hospitalized during the period of prevalence of the Delta variant, and 414 (36.8%) were hospitalized during the period of prevalence of the Omicron variant. Overall, the in-hospital mortality rate was 33.4% (375 patients), and the 1-year mortality rate was 44.7% (502 patients). The majority of patients had not been vaccinated or had not completed full vaccination against severe acute respiratory syndrome coronavirus-2 (843 patients, 75%), given the period of infection. Age, immature granulocytes, lactate dehydrogenase (LDH) levels, ferritin levels, chest X-ray score, as well as the absence of full vaccination, cough and fatigue, were statistically significantly and independently associated with in-hospital mortality, while age, LDH levels, ferritin levels, alanine aminotransferase levels, CCI, chest X-ray score, the absence of cough and fatigue, and a history of dementia were statistically significantly and independently associated with 1-year mortality. On the whole, the present study demonstrates that both the in-hospital mortality and 1-year mortality rates of elderly patients hospitalized due to COVID-19-related pneumonia are high.
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Affiliation(s)
- Vasiliki Epameinondas Georgakopoulou
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Aikaterini Gkoufa
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sotiria Makrodimitri
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Aristeidis Tsakanikas
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Dimitrios Basoulis
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Pantazis M. Voutsinas
- Department of Pathophysiology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Georgios Karamanakos
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Irene Eliadi
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stamatia Samara
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Triantafyllou
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioanna Eleftheriadou
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Olga Kampouropoulou
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Chrysovalantis V. Papageorgiou
- Pulmonology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Amalia Anastasopoulou
- First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Petros Papalexis
- Unit of Endocrinology, First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
| | - Ilias Trakas
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Nikolaos Trakas
- Department of Biochemistry, Sismanogleio Hospital, 15126 Athens, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Paschalis Steiropoulos
- Department of Pulmonology, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Nikolaos V. Sipsas
- Department of Infectious Diseases-COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Pathophysiology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
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Georgakopoulou V, Basoulis D, Voutsinas P, Makrodimitri S, Samara S, Triantafyllou M, Eliadi I, Karamanakos G, Papageorgiou C, Anastasopoulou A, Bitsani A, Kampouropoulou O, Eleftheriadou I, Gkoufa A, Spandidos D, Papalexis P, Sipsas N. Factors predicting poor outcomes of patients treated with tocilizumab for COVID‑19‑associated pneumonia: A retrospective study. Exp Ther Med 2022; 24:724. [DOI: 10.3892/etm.2022.11660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- Vasiliki Georgakopoulou
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Dimitrios Basoulis
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Pantazis Voutsinas
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sotiria Makrodimitri
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stamatia Samara
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Triantafyllou
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Irene Eliadi
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Georgios Karamanakos
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Chrysovalantis Papageorgiou
- Pulmonology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Amalia Anastasopoulou
- First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Aikaterini Bitsani
- First Department of Propedeutic Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Olga Kampouropoulou
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioanna Eleftheriadou
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Aikaterini Gkoufa
- First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Demetrios Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Petros Papalexis
- Unit of Endocrinology, First Department of Internal Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Nikolaos Sipsas
- Infectious Diseases and COVID‑19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
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Karayiannis D, Kakavas S, Sarri A, Giannopoulou V, Liakopoulou C, Jahaj E, Kanavou A, Pitsolis T, Malachias S, Adamos G, Mantelou A, Almperti A, Morogianni K, Kampouropoulou O, Kotanidou A, Mastora Z. Does Route of Full Feeding Affect Outcome among Ventilated Critically Ill COVID-19 Patients: A Prospective Observational Study. Nutrients 2021; 14:nu14010153. [PMID: 35011026 PMCID: PMC8746666 DOI: 10.3390/nu14010153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/25/2021] [Accepted: 12/26/2021] [Indexed: 01/17/2023] Open
Abstract
The outbreak of the new coronavirus strain SARS-CoV-2 (COVID-19) highlighted the need for appropriate feeding practices among critically ill patients admitted to the intensive care unit (ICU). This study aimed to describe feeding practices of intubated COVID-19 patients during their second week of hospitalization in the First Department of Critical Care Medicine, Evaggelismos General Hospital, and evaluate potential associations with all cause 30-day mortality, length of hospital stay, and duration of mechanical ventilation. We enrolled adult intubated COVID-19 patients admitted to the ICU between September 2020 and July 2021 and prospectively monitored until their hospital discharge. Of the 162 patients analyzed (52.8% men, 51.6% overweight/obese, mean age 63.2 ± 11.9 years), 27.2% of patients used parenteral nutrition, while the rest were fed enterally. By 30 days, 34.2% of the patients in the parenteral group had died compared to 32.7% of the patients in the enteral group (relative risk (RR) for the group receiving enteral nutrition = 0.97, 95% confidence interval = 0.88–1.06, p = 0.120). Those in the enteral group demonstrated a lower duration of hospital stay (RR = 0.91, 95% CI = 0.85-0.97, p = 0.036) as well as mechanical ventilation support (RR = 0.94, 95% CI = 0.89–0.99, p = 0.043). Enteral feeding during second week of ICU hospitalization may be associated with a shorter duration of hospitalization and stay in mechanical ventilation support among critically ill intubated patients with COVID-19.
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Affiliation(s)
- Dimitrios Karayiannis
- Department of Clinical Nutrition, “Evangelismos” General Hospital of Athens, Ypsilantou 45-47, 10676 Athens, Greece; (A.A.); (K.M.)
- Correspondence: ; Tel.: +30-213-2045035; Fax: +30-213-2041385
| | - Sotirios Kakavas
- Intensive Care Unit, Center for Respiratory Failure, “Sotiria” General Hospital of Chest Diseases, 152 Mesogeion Avenue, 11527 Athens, Greece;
| | - Aikaterini Sarri
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Vassiliki Giannopoulou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Christina Liakopoulou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Edison Jahaj
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Aggeliki Kanavou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Thodoris Pitsolis
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Sotirios Malachias
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - George Adamos
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Athina Mantelou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Avra Almperti
- Department of Clinical Nutrition, “Evangelismos” General Hospital of Athens, Ypsilantou 45-47, 10676 Athens, Greece; (A.A.); (K.M.)
| | - Konstantina Morogianni
- Department of Clinical Nutrition, “Evangelismos” General Hospital of Athens, Ypsilantou 45-47, 10676 Athens, Greece; (A.A.); (K.M.)
| | - Olga Kampouropoulou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Anastasia Kotanidou
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
| | - Zafeiria Mastora
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (A.S.); (V.G.); (C.L.); (E.J.); (A.K.); (T.P.); (S.M.); (G.A.); (A.M.); (O.K.); (A.K.); (Z.M.)
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Samarkos M, Mastrogianni E, Kampouropoulou O. The role of gut microbiota in Clostridium difficile infection. Eur J Intern Med 2018; 50:28-32. [PMID: 29428498 DOI: 10.1016/j.ejim.2018.02.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 02/07/2023]
Abstract
Clostridium difficile infection has emerged as a major health problem. Because it is a spore-forming microorganism, C. difficile is difficult to eradicate and recurrences of the infection are frequent. The strong association of CDI with prior use of antibiotics led to the recognition that disturbances in the gut microbiota apparently plays a central role in CDI. Except for antibiotics, several other risk factors for CDI have been recognised, such as advanced age and use of proton pump inhibitors. The common characteristic of these factors is that they are associated with changes in the composition of gut microbiota. Data from human studies have shown that the presence of C. difficile, either as a colonizer or as a pathogen, is associated with reduced microbiota diversity. C. difficile infection per se seems to be associated with changes in the representation of specific microbial populations (e.g. taxa) which either may act protectively against C. difficile colonization of the gut or may increase susceptibility for C. difficile infection. Therapeutic gut microbiota manipulation can be achieved by faecal microbiota transplantation, which is highly effective for the treatment of CDI.
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Affiliation(s)
- Michael Samarkos
- 1st Department of Medicine, School of Medicine, National and Kapodistrian University of Athens, Greece.
| | - Elpida Mastrogianni
- 1st Department of Medicine, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Olga Kampouropoulou
- 1st Department of Medicine, School of Medicine, National and Kapodistrian University of Athens, Greece
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Eliadi I, Tsoumi G, Kampouropoulou O, Theofanis V, Mantzourani M, Samarkos M. Characterization of the medical admissions in a tertiary Greek hospital. Eur J Intern Med 2017; 40:e15-e16. [PMID: 28119030 DOI: 10.1016/j.ejim.2017.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 01/18/2017] [Indexed: 10/20/2022]
Affiliation(s)
- Irene Eliadi
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Georgia Tsoumi
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Olga Kampouropoulou
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Vasileios Theofanis
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Marina Mantzourani
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Michael Samarkos
- 1st Department of Medicine, Laikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Greece.
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Asimakopoulos J, Terpos E, Giakoumis A, Kampouropoulou O, Papageorgiou L, Petevi K, Vaiopoulos G, Vassilakopoulos T, Angelopoulou M, Konstantopoulos K, Meletis J. AB0047 Cd55 Red-Cell Expression in Systemic Autoimmune Disease Reflects Its Impact on Erythropoiesis through Immune-Mediated Bone Marrow Insufficiency. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1298] [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: 11/04/2022]
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Asimakopoulos JV, Terpos E, Papageorgiou L, Kampouropoulou O, Christoulas D, Giakoumis A, Samarkos M, Vaiopoulos G, Konstantopoulos K, Angelopoulou MK, Vassilakopoulos TP, Meletis J. The presence of CD55- and/or CD59-deficient erythrocytic populations in patients with rheumatic diseases reflects an immune-mediated bone-marrow derived phenomenon. Med Sci Monit 2014; 20:123-39. [PMID: 24463881 PMCID: PMC3915003 DOI: 10.12659/msm.889727] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Complement has the potential to provoke severe impairment to host tissues, as shown in autoimmune diseases where complement activation has been associated with diminished CD55 and/or CD59 expression on peripheral blood cell membranes. The aim of this study was to evaluate the presence of CD55- and/or CD59-deficient erythrocytic populations in patients with different rheumatic diseases and to investigate possible correlations with clinical or laboratory parameters. Material/Methods CD55 and CD59 expression was evaluated in erythrocytes of 113 patients with rheumatic diseases, 121 normal individuals, and 10 patients with paroxysmal nocturnal hemoglobinuria (PNH) using the Sephacryl gel microtyping system. Ham and sucrose tests were also performed. Results Interestingly, the majority of patients (104/113, 92%) demonstrated CD55- and/or CD59-deficient erythrocytes: 47 (41.6%) with concomitant deficiency of CD55 and CD59, 50 (44.2%) with isolated deficiency of CD55, and 6 (6.2%) with isolated deficiency of CD59. In normal individuals, only 2 (1%) had concomitant CD55/CD59 negativity and 3 (2%) had isolated CD55 or CD59 deficiency. All PNH patients exhibited simultaneous CD55/CD59 deficiency. Positive Ham and sucrose tests were found only in PNH patients. There was no association between the CD55- and/or CD59-deficient erythrocytes and hemocytopenias or undergoing treatment. However, CD55 expression significantly influenced hemoglobin values (F=6.092, p=0.015). Conclusions This study provides evidence supporting the presence of erythrocytes with CD55 and/or CD59 deficiency in patients with rheumatic diseases. Moreover, CD55 deficiency on red cells influences hemoglobin concentration. Further studies using molecular techniques will clarify the exact pathophysiological mechanisms of this deficiency.
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Affiliation(s)
- John V Asimakopoulos
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Evangelos Terpos
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, "Alexandra" General Hospital, Athens, Greece
| | - Loula Papageorgiou
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Olga Kampouropoulou
- 1st Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Dimitris Christoulas
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, "Alexandra" General Hospital, Athens, Greece
| | - Anastasios Giakoumis
- 1st Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Michael Samarkos
- 1st Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - George Vaiopoulos
- 1st Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Konstantinos Konstantopoulos
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Maria K Angelopoulou
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - Theodoros P Vassilakopoulos
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
| | - John Meletis
- Department of Hematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
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