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1.
Blood Cells Mol Dis ; 107: 102859, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38820707

RESUMO

We conducted a retrospective cohort study on 663 transfusion-dependent ß-thalassemia patients receiving the same iron chelation monotherapy with deferoxamine, deferiprone, or deferasirox for up to 10 years (median age 31.8 years, 49.9 % females). Patients on all three iron chelators had a steady and significant decline in serum ferritin over the 10 years (median deferoxamine: -170.7 ng/mL, P = 0.049, deferiprone: -236.7 ng/mL, P = 0.001; deferasirox: -323.7 ng/mL, P < 0.001) yet had no significant change in liver iron concentration or cardiac T2*; while noting that patients generally had low hepatic and cardiac iron levels at study start. Median absolute, relative, and normalized changes were generally comparable between the three iron chelators. Patients receiving deferasirox had the highest morbidity and mortality-free survival probability among the three chelators, although the difference was only statistically significant when compared with deferoxamine (P = 0.037). On multivariate Cox regression analysis, there was no significant association between iron chelator type and the composite outcome of morbidity or mortality. In a real-world setting, there is comparable long-term iron chelation effectiveness between the three available iron chelators for patients with mild-to-moderate iron overload.


Assuntos
Transfusão de Sangue , Deferasirox , Deferiprona , Desferroxamina , Quelantes de Ferro , Ferro , Piridonas , Talassemia beta , Humanos , Quelantes de Ferro/uso terapêutico , Talassemia beta/mortalidade , Talassemia beta/terapia , Talassemia beta/tratamento farmacológico , Talassemia beta/complicações , Feminino , Masculino , Adulto , Estudos Retrospectivos , Desferroxamina/uso terapêutico , Deferiprona/uso terapêutico , Ferro/metabolismo , Deferasirox/uso terapêutico , Piridonas/uso terapêutico , Sobrecarga de Ferro/etiologia , Sobrecarga de Ferro/tratamento farmacológico , Benzoatos/uso terapêutico , Ferritinas/sangue , Adolescente , Triazóis/uso terapêutico , Adulto Jovem , Criança , Resultado do Tratamento , Pessoa de Meia-Idade , Fígado/metabolismo , Fígado/efeitos dos fármacos , Fígado/patologia , Estudos de Coortes
2.
Ann Hematol ; 103(7): 2283-2297, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38503936

RESUMO

Data on iron overload status and change thresholds that can predict mortality in patients with transfusion-dependent ß-thalassemia (TDT) are limited. This was a retrospective cohort study of 912 TDT patients followed for up to 10 years at treatment centers in Italy (median age 32 years, 51.6% female). The crude mortality rate was 2.9%. Following best-predictive threshold identification through receiver operating characteristic curve analyses, data from multivariate Cox-regression models showed that patients with Period Average Serum Ferritin (SF) > 2145 vs ≤ 2145 ng/mL were 7.1-fold (P < 0.001) or with Absolute Change SF > 1330 vs ≤ 1330 ng/mL increase were 21.5-fold (P < 0.001) more likely to die from any cause. Patients with Period Average Liver Iron Concentration (LIC) > 8 vs ≤ 8 mg/g were 20.2-fold (P < 0.001) or with Absolute Change LIC > 1.4 vs ≤ 1.4 mg/g increase were 27.6-fold (P < 0.001) more likely to die from any cause. Patients with Index (first) cardiac T2* (cT2*) < 27 vs ≥ 27 ms were 8.6-fold (P < 0.001) more likely to die from any cause. Similarly, results at varying thresholds were identified for death from cardiovascular disease. These findings should support decisions on iron chelation therapy by establishing treatment targets, including safe iron levels and clinically meaningful changes over time.


Assuntos
Transfusão de Sangue , Sobrecarga de Ferro , Talassemia beta , Humanos , Feminino , Sobrecarga de Ferro/mortalidade , Sobrecarga de Ferro/sangue , Sobrecarga de Ferro/etiologia , Masculino , Talassemia beta/terapia , Talassemia beta/mortalidade , Talassemia beta/sangue , Talassemia beta/complicações , Adulto , Estudos Retrospectivos , Adolescente , Ferritinas/sangue , Adulto Jovem , Pessoa de Meia-Idade , Ferro/sangue , Ferro/metabolismo , Estudos de Coortes , Criança , Seguimentos , Itália/epidemiologia
3.
Am J Hematol ; 99(3): 490-493, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38165006

RESUMO

Rate and risk factors for phenoconversion from non-transfusion-dependent ß-thalassemia (NTDT) to transfusion-dependent ß-thalassemia (TDT) during a 10-year follow up of adult patients in Italy.


Assuntos
Talassemia beta , Adulto , Humanos , Talassemia beta/terapia , Transfusão de Sangue , Fatores de Risco , Itália
4.
Ann Hematol ; 102(2): 261-270, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36459182

RESUMO

The aim of this multicenter study was to prospectively assess the predictive value of multiparametric cardiac magnetic resonance (CMR) for cardiovascular complications in sickle cell disease (SCD) patients. Among all patients with hemoglobinopathies consecutively enrolled in the Myocardial Iron Overload in Thalassemia (MIOT) Network, we selected 102 SCD patients (34.38 ± 12.67 years, 49 females). Myocardial iron overload (MIO) was measured by the multislice multiecho T2* technique. Atrial dimensions and biventricular function parameters were quantified by cine images. Late gadolinium enhancement (LGE) images were acquired to detect focal myocardial fibrosis. At baseline CMR, only two patients had significant MIO (global heart T2* < 20 ms). During a mean follow-up of 63.01 ± 24.95 months, 11 cardiovascular events (10.8%) were registered: 3 pulmonary hypertension, 2 supraventricular arrhythmias, 1 heart failure, 1 death for heart failure, 1 pulmonary embolism, 1 peripheral vascular disease, 1 transient ischemic attack, and 1 death after acute chest syndrome. In the multivariate analysis, the independent CMR predictors of cardiovascular events were left ventricular (LV) ejection fraction (hazard ratio-HR = 0.88; p = 0.025) and right ventricular (RV) mass index (HR = 1.09; p = 0.047). According to the receiver-operating characteristic curve analysis for adverse events, an LV ejection fraction < 58.9% and an RV mass index > 31 g/m2 were optimal cut-off values. Reduced left ventricular ejection fraction and increased right ventricular mass index showed a significant prognostic value in patients with SCD. Our data seem to suggest that CMR may be added as a screening tool for identifying SCD patients at high risk for cardiopulmonary and vascular diseases.


Assuntos
Anemia Falciforme , Cardiopatias , Insuficiência Cardíaca , Sobrecarga de Ferro , Feminino , Humanos , Prognóstico , Volume Sistólico , Meios de Contraste , Função Ventricular Esquerda , Imagem Cinética por Ressonância Magnética/métodos , Gadolínio , Fibrose , Espectroscopia de Ressonância Magnética , Anemia Falciforme/complicações , Anemia Falciforme/diagnóstico por imagem , Sobrecarga de Ferro/diagnóstico por imagem , Sobrecarga de Ferro/etiologia , Valor Preditivo dos Testes
5.
Am J Hematol ; 98(3): 381-387, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36588408

RESUMO

We report data on survival and complications for a longitudinal cohort of 709 transfusion-dependent ß-thalassemia major patients (51.1% males) born between 1970 and 1997 and followed through 2020 at seven major centers in Italy. Overall survival probability at 30 years was 83.6% (95%CI: 78.5-89.1) in the oldest birth cohort (1970-1974) compared with 93.3% (95%CI: 88.6-98.3) in the youngest birth cohort (1985-1997) (p = 0.073). Females showed better survival than males (p = 0.022). There were a total of 93 deaths at a median age of 23.2 years with the most frequent disease-related causes being heart disease (n = 53), bone marrow transplant (BMT) complication (n = 10), infection (n = 8), liver disease (n = 4), cancer (n = 3), thromboembolism (n = 2) and severe anemia (n = 1). There was a steady decline in the number of deaths due to heart disease from the year 2000 onwards and no death from BMT was observed after the year 2010. A progressive decrease in the median age of BMT was observed in younger birth cohorts (p < 0.001). A total of 480 (67.7%) patients developed ≥1 complication. Patients in younger birth cohorts demonstrated better complication-free survival (p < 0.001) which was comparable between sexes (p = 0.230). Independent risk factors for death in multivariate analysis included heart disease (HR: 4.63, 95%CI: 1.78-12.1, p = 0.002), serum ferritin >1000 ng/mL (HR: 15.5, 95%CI: 3.52-68.2, p < 0.001), male sex (HR: 2.75, 95%CI: 0.89-8.45, p = 0.078), and splenectomy (HR: 6.97, 95%CI: 0.90-54.0, p < 0.063). Survival in patients with ß-thalassemia major continues to improve with adequate access to care, best practice sharing, continued research, and collaboration between centers.


Assuntos
Cardiopatias , Tromboembolia , Talassemia beta , Feminino , Humanos , Masculino , Adulto Jovem , Adulto , Talassemia beta/complicações , Talassemia beta/terapia , Transplante de Medula Óssea , Fatores de Risco , Tromboembolia/complicações
6.
Eur Heart J ; 43(26): 2482-2492, 2022 07 07.
Artigo em Inglês | MEDLINE | ID: mdl-34907420

RESUMO

AIMS: A tailored chelation therapy guided by magnetic resonance imaging (MRI) is a strategy to improve the prognosis in iron-loaded patients, in many cases still hampered by limited MRI availability. In order to address this issue, the Myocardial Iron Overload in Thalassemia (MIOT) network was established in Italy and we aimed to describe the impact of 10-year activity of this network on cardiac burden in thalassemia major (TM). METHODS AND RESULTS: Within the MIOT network, 1746 TM patients (911 females; mean age 31.2 ± 9.1 years) were consecutively enrolled and prospectively followed by 70 thalassemia and 10 MRI centres. Patients were scanned using a multiparametric approach for assessing myocardial iron overload (MIO), biventricular function, and myocardial fibrosis. At the last MRI scan, a significant increase in global heart T2* values and a significantly higher frequency of patients with no MIO (all segmental T2* ≥20 ms) were detected, with a concordant improvement in biventricular function, particularly in patients with baseline global heart T2* <20 ms. Forty-seven percentage of patients changed the chelation regimen based on MRI. The frequency of heart failure (HF) significantly decreased after baseline MRI from 3.5 to 0.8% (P < 0.0001). Forty-six patients died during the study, and HF accounted for 34.8% of deaths. CONCLUSION: Over 10 years, continuous monitoring of cardiac iron and a tailored chelation therapy allowed MIO reduction, with consequent improvement of cardiac function and reduction of cardiac complications and mortality from MIO-related HF. A national networking for rare diseases therefore proved effective in improving the care and reducing cardiac outcomes of TM patients.


Assuntos
Sobrecarga de Ferro , Talassemia , Talassemia beta , Adulto , Feminino , Humanos , Ferro , Imageamento por Ressonância Magnética/métodos , Imagem Cinética por Ressonância Magnética/métodos , Miocárdio/patologia , Doenças Raras , Talassemia/complicações , Talassemia/patologia , Adulto Jovem , Talassemia beta/complicações , Talassemia beta/terapia
7.
J Cell Mol Med ; 26(9): 2520-2528, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35355397

RESUMO

Although numerous patient-specific co-factors have been shown to be associated with worse outcomes in COVID-19, the prognostic value of thalassaemic syndromes in COVID-19 patients remains poorly understood. We studied the outcomes of 137 COVID-19 patients with a history of transfusion-dependent thalassaemia (TDT) and transfusion independent thalassaemia (TIT) extracted from a large international cohort and compared them with the outcomes from a matched cohort of COVID-19 patients with no history of thalassaemia. The mean age of thalassaemia patients included in our study was 41 ± 16 years (48.9% male). Almost 81% of these patients suffered from TDT requiring blood transfusions on a regular basis. 38.7% of patients were blood group O. Cardiac iron overload was documented in 6.8% of study patients, whereas liver iron overload was documented in 35% of study patients. 40% of thalassaemia patients had a history of splenectomy. 27.7% of study patients required hospitalization due to COVID-19 infection. Amongst the hospitalized patients, one patient died (0.7%) and one patient required intubation. Continuous positive airway pressure (CPAP) was required in almost 5% of study patients. After adjustment for age-, sex- and other known risk factors (cardiac disease, kidney disease and pulmonary disease), the rate of in-hospital complications (supplemental oxygen use, admission to an intensive care unit for CPAP therapy or intubation) and all-cause mortality was significantly lower in the thalassaemia group compared to the matched cohort with no history of thalassaemia. Amongst thalassaemia patients in general, the TIT group exhibited a higher rate of hospitalization compared to the TDT group (p = 0.001). In addition, the rate of complications such as acute kidney injury and need for supplemental oxygen was significantly higher in the TIT group compared to the TDT group. In the multivariable logistic regression analysis, age and history of heart or kidney disease were all found to be independent risk factors for increased in-hospital, all-cause mortality, whereas the presence of thalassaemia (either TDT or TIT) was found to be independently associated with reduced all-cause mortality. The presence of thalassaemia in COVID-19 patients was independently associated with lower in-hospital, all-cause mortality and few in-hospital complications in our study. The pathophysiology of this is unclear and needs to be studied in vitro and in animal models.


Assuntos
COVID-19 , Sobrecarga de Ferro , Talassemia , COVID-19/complicações , Feminino , Hospitais , Humanos , Sobrecarga de Ferro/etiologia , Masculino , Oxigênio , Sistema de Registros , Talassemia/complicações , Talassemia/terapia
9.
J Magn Reson Imaging ; 53(1): 61-70, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32311193

RESUMO

BACKGROUND: Cardiac MRI plays a critical role in the management of thalassemic patients. No accurate biventricular reference values are available. PURPOSE: To establish the ranges for normal left ventricular (LV) and right ventricular (RV) volumes and ejection fraction (EF) and LV mass normalized to body surface area (BSA), age, and gender in a large cohort of well-treated beta-thalassemia major (ß-TM) patients without heart damage using a multiparametric MRI. STUDY TYPE: Retrospective/cohort study. POPULATION: In all, 251 ß-TM patients with no known risk factors or cardiac disease, normal electrocardiogram, no macroscopic myocardial fibrosis, and all cardiac segments with T2 * ≥20 msec, and 246 healthy subjects. FIELD STRENGTH/SEQUENCE: 1.5T/cine steady-state free precession (SSFP), gradient-echo T2 *, late gadolinium enhancement (LGE) images. ASSESSMENT: Biventricular end-diastolic volume, end-systolic volume, stroke volume, and LV mass were normalized to BSA (EDVI, ESVI, SVI). STATISTICAL TESTS: Comparisons between the two groups was performed with two-samples t-test or Wilcoxon's signed rank test. For more than two groups, one-way analysis of variance (ANOVA) or a Kruskal-Wallis test were applied. RESULTS: Compared to controls, males with ß-TM showed significantlt higher LVEDVI in all the age groups, while for the other volumes the difference was significant only within one or more age groups. In females the volumes were comparable between ß-TM patients and healthy subjects in all the age groups. In the male ß-TM population we found a significant effect of age on LVEDVI (P = 0.017), LVESVI (P = 0.001), RVESVI (P = 0.029), and RVEF (P = 0.031), while for females none of the biventricular parameters were significantly different among the age groups (LVEDVI: P = 0.614; LVESVI: P = 0.449; LVSVI: P = 0.186; LV mass index: P = 0.071; LVEF: P = 0.059; RVEDVI: P = 0.374; RVESVI: P = 0.180; RVSVI: P = 0.206; RVEF: P = 0.057). In ß-TM patients all biventricular volume indexes as well as the LV mass index were significantly larger in males than in females (P < 0.0001 in all cases). The LV and the RV EF were comparable between the sexes (P = 0.568 and P = 0.268, respectively). DATA CONCLUSION: Appropriate "normal" reference ranges normalized to BSA, sex, and age are recommended to avoid misdiagnosis of cardiomyopathy in ß-TM patients. LEVEL OF EVIDENCE: 4 TECHNICAL EFFICACY STAGE: 2.


Assuntos
Traumatismos Cardíacos , Talassemia beta , Superfície Corporal , Estudos de Coortes , Meios de Contraste , Feminino , Gadolínio , Ventrículos do Coração/diagnóstico por imagem , Humanos , Imageamento por Ressonância Magnética , Masculino , Valores de Referência , Estudos Retrospectivos , Volume Sistólico , Função Ventricular Esquerda , Talassemia beta/diagnóstico por imagem
10.
Blood Cells Mol Dis ; 77: 1-7, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-30878912

RESUMO

Beta thalassemia major (ß-TM) displays a great deal of phenotypic heterogeneity, not fully investigated in terms of cause-effect. We aimed to detect if different genotypic groups could be related to different levels of cardiac impairment, evaluated by cardiovascular magnetic resonance (CMR). We considered 671 ß-TM patients (age 30.1 years, 52.9% females) consecutively enrolled in the Myocardial Iron Overload (MIO) in Thalassemia network. MIO was assessed by T2* technique. Biventricular function was quantified by cine images. Myocardial fibrosis was evaluated by late gadolinium enhancement (LGE) technique. Three groups of patients were identified: heterozygotes ß+/ß° (N = 279), homozygotes ß + (N = 154), homozygotes ß° (N = 238). Transfusional needs resulted significantly lower in homozygous ß + TM patients when compared to the other groups. The homozygous ß + group versus the heterozygous and homozygous ß° groups showed higher global heart T2* values (P < 0.0001) and a lower number of patients with a global heart T2* value<20 ms (P < 0.001). The homozygotes ß + showed a lower number of patients with a pathological left ventricular ejection fraction (LVEF) than the other two groups (P < 0.05). The ß+/ß + TM patients showed less MIO and a concordant better systolic heart function. These data support the knowledge of different genotypic groups in the management of ß-TM patients.


Assuntos
Genótipo , Cardiopatias/diagnóstico , Cardiopatias/etiologia , Imageamento por Ressonância Magnética , Globinas beta/genética , Talassemia beta/complicações , Talassemia beta/genética , Adulto , Alelos , Biomarcadores , Transfusão de Sangue , Índices de Eritrócitos , Feminino , Testes de Função Cardíaca , Humanos , Sobrecarga de Ferro/complicações , Sobrecarga de Ferro/diagnóstico , Sobrecarga de Ferro/etiologia , Sobrecarga de Ferro/terapia , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Talassemia beta/diagnóstico , Talassemia beta/terapia
11.
Ann Hematol ; 98(6): 1333-1339, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30891614

RESUMO

We determined the prevalence of incidental extracardiac findings (IEF) at Magnetic Resonance Imaging (MRI) potentially related to anemia and hypoxia in age- and sex-matched populations (N = 318) with thalassemia major (TM) and thalassemia intermedia (TI) enrolled in the Myocardial Iron Overload in Thalassemia network. Overall, IEFs were detected in 33.3% and 25.8% of patients with TI and TM, respectively (P = 0.114). TI and TM patients had elevated but comparable prevalence of renal, splenic and liver cysts, and vertebral hemangiomas while TI patients had a significant higher frequency of extramedullary hematopoiesis (EMH) (15.1% vs 4.4%; P = 0.002). The prevalence of total IEFs increased with advancing age. TI non-transfusion-dependent patients had a significantly lower frequency of renal cysts than TI transfusion-dependent patients (8.8% vs 26.4%; P = 0.005). The prevalence of renal cysts in the thalassemic population was significantly higher than that in the general population (19.2% vs 1.9%; P < 0.0001). Our data on renal cysts indicate a significant higher prevalence of these IEFs compared to the general population, suggesting the role of the inappropriate activation of the hypoxia-inducible factor system linked to the chronic hypoxia. The significant prevalence of IEF in thalassemia patients undergoing MRI for iron quantification should prompt the discussion of the inclusion of IEF in the MRI report.


Assuntos
Cistos/epidemiologia , Hemangioma/epidemiologia , Hematopoese Extramedular , Doenças Renais Císticas/epidemiologia , Neoplasias da Coluna Vertebral/epidemiologia , Esplenopatias/epidemiologia , Talassemia/complicações , Adulto , Distribuição por Idade , Anemia/complicações , Transfusão de Sangue , Cistos/diagnóstico por imagem , Cistos/etiologia , Feminino , Hemangioma/diagnóstico por imagem , Hemangioma/etiologia , Humanos , Hipóxia/complicações , Serviços de Informação , Quelantes de Ferro/uso terapêutico , Sobrecarga de Ferro/tratamento farmacológico , Sobrecarga de Ferro/epidemiologia , Sobrecarga de Ferro/etiologia , Itália/epidemiologia , Doenças Renais Císticas/diagnóstico por imagem , Doenças Renais Císticas/etiologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Neoplasias da Coluna Vertebral/diagnóstico por imagem , Neoplasias da Coluna Vertebral/etiologia , Esplenopatias/diagnóstico por imagem , Esplenopatias/etiologia , Talassemia/sangue , Talassemia/terapia , Adulto Jovem
12.
Br J Haematol ; 183(5): 783-795, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30334574

RESUMO

We prospectively assessed the efficacy of deferasirox versus deferiprone or desferrioxamine as monotherapy in thalassaemia major (TM) patients by magnetic resonance imaging (MRI). We selected the patients enrolled in the Myocardial Iron Overload in Thalassaemia network who received only one chelator between two MRIs (deferasirox = 235, deferiprone = 142, desferrioxamine = 162). Iron overload was measured by T2* technique and biventricular function by cine images. Among the patients with baseline myocardial iron, in all three groups there was a significant improvement in global heart T2* values. The deferiprone and desferrioxamine groups showed a significant improvement in left ventricular ejection fraction (LVEF). Only the deferiprone group showed a significant improvement in right ventricular ejection fraction (RVEF). The improvement in global heart T2* was significantly lower in the deferasirox versus the deferiprone group. The improvement in the LVEF was significantly higher in the deferiprone and desferrioxamine groups than in the deferasirox group and the improvement in the RVEF was significantly higher in the deferiprone than in deferasirox group. Among the patients with baseline hepatic iron, the changes in hepatic iron were comparable in deferasirox versus the other groups. Deferasirox monotherapy was less effective than deferiprone in improving myocardial siderosis and biventricular function and less effective than desferrioxamine in improving the LVEF.


Assuntos
Deferasirox/uso terapêutico , Deferiprona/uso terapêutico , Desferroxamina/uso terapêutico , Quelantes de Ferro/uso terapêutico , Talassemia beta/tratamento farmacológico , Adulto , Cardiomiopatias/complicações , Cardiomiopatias/tratamento farmacológico , Substituição de Medicamentos , Quimioterapia Combinada , Feminino , Humanos , Sobrecarga de Ferro/complicações , Sobrecarga de Ferro/tratamento farmacológico , Imageamento por Ressonância Magnética , Masculino , Estudos Prospectivos , Resultado do Tratamento , Talassemia beta/complicações
13.
Ann Hematol ; 97(10): 1925-1932, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29926157

RESUMO

We prospectively assessed by magnetic resonance imaging (MRI) the advantages of desferrioxamine (DFO) with respect to the absence of chelation therapy in non transfusion-dependent thalassaemia (NTDT) patients. We considered 18 patients non-chelated and 33 patients who received DFO alone between the two MRI scans. Iron overload was assessed by the T2* technique. Biventricular function parameters were quantified by cine sequences. No patient treated with DFO had cardiac iron. At baseline, only one non-chelated patient showed a pathological heart T2* value (< 20 ms) and he recovered at the follow-up. The percentage of patients who maintained a normal heart T2* value was 100% in both groups. A significant increase in the right ventricular ejection fraction was detected in DFO patients (3.48 ± 7.22%; P = 0.024). The changes in cardiac T2* values and in the biventricular function were comparable between the two groups. In patients with hepatic iron at baseline (MRI liver iron concentration (LIC) ≥ 3 mg/g/dw), the reduction in MRI LIC values was significant only in the DFO group (- 2.20 ± 4.84 mg/g/dw; P = 0.050). The decrease in MRI LIC was comparable between the groups. In conclusion, in NTDT patients, DFO therapy showed no advantage in terms of cardiac iron but its administration allowed an improvement in right ventricular function. Moreover, DFO reduced hepatic iron in patients with significant iron burden at baseline.


Assuntos
Terapia por Quelação , Desferroxamina/uso terapêutico , Quelantes de Ferro/uso terapêutico , Sobrecarga de Ferro/prevenção & controle , Talassemia/tratamento farmacológico , Adolescente , Adulto , Idoso , Terapia por Quelação/métodos , Criança , Feminino , Seguimentos , Coração/diagnóstico por imagem , Coração/efeitos dos fármacos , Humanos , Ferro/metabolismo , Masculino , Pessoa de Meia-Idade , Miocárdio/metabolismo , Adulto Jovem
14.
Am J Hematol ; 97(2): E75-E78, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34861054
15.
Breast J ; 23(5): 563-568, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28252236

RESUMO

To compare adjuvant conventional radiotherapy (C-RT) to hypofractionated schedule (HF-RT) in early breast cancer. Between May 2012 and September 2015, 120 patients were included in the analysis. All patients underwent conservative surgery and adjuvant RT. RT was delivered in C-RT (50 Gy; 2 Gy/fr) or HF-RT (42.5 Gy; 2.66 Gy/fr), followed by a tumor bed boost (10 Gy; 2 Gy/fr). RT-induced toxicity was recorded and compared between groups. Toxicity results were graded according to the Common Terminology Criteria for Adverse Events guidelines. A multivariate analysis was performed of the factors associated with acute toxicity onset. Mild acute skin toxicity was observed in 71.7% of patients. No grade 4 toxicity was observed. From the multivariate analysis, Breast volume and RT fractionation significantly affected acute radiation-related toxicity. No increase in late toxic effects has been reported between C-RT and HF-RT schedules. Overall, the 2-year disease free survival was 94.4%. HF-RT represents a valid adjuvant treatment option in early breast cancer patients, without negative impact on acute and late radiation sequelae, as well as tumor control.


Assuntos
Neoplasias da Mama/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Terapia Combinada , Intervalo Livre de Doença , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Hipofracionamento da Dose de Radiação , Lesões por Radiação , Radioterapia Adjuvante , Análise de Sobrevida , Resultado do Tratamento
16.
J Environ Manage ; 204(Pt 1): 637-650, 2017 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-28942192

RESUMO

Emissions due to ship-loading of hydrocarbons are currently not addressed neither by the Directive on the integrated pollution prevention or by other environmental regulations. The scope of this study is to point towards the environmental and safety concerns associated with such emissions, even if proper attention has not been given to this issue until now. In order to achieve this goal, the modelling of the emission volatile organic compounds (VOC), due to ship-load operations at refineries has been made by means of the definition of a simulation procedure which includes a proper treatment of the hours of calm. Afterwards, a quantitative analysis of VOC dispersion for an Italian case-study is presented with the primary aims: (i) to develop and verify the validity of the approach for the modelling of the emission sources and of the diffusion of these contaminants into the atmosphere by a proper treatment of the hours of calm and (ii) to identify their contribution to the total VOC emitted in a typical refinery. The calculated iso-concentration contours have also been drawn on a map and allowed the identification of critical areas for people protecting by the adoption of abatement solutions.


Assuntos
Poluentes Atmosféricos/análise , Monitoramento Ambiental , Hidrocarbonetos/análise , Petróleo/análise , Compostos Orgânicos Voláteis , Monitoramento Ambiental/métodos , Navios , Compostos Orgânicos Voláteis/análise
18.
Int J Cardiovasc Imaging ; 39(5): 991-999, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36637709

RESUMO

PURPOSE: The left ventricular global function index (LVGFI) is a comprehensive marker of cardiac performance, integrating LV morphology with global function. We explored the cross-sectional association of LVGFI with myocardial iron overload (MIO), LV ejection fraction (LVEF), myocardial fibrosis, and heart failure (HF) in ß-thalassemia major (TM) patients. METHODS: We considered 1352 adult TM patients (708 females, 32.79 ± 7.16years) enrolled in the Myocardial Iron Overload in Thalassemia Network and 112 healthy subjects (50 females, 32.09 ± 6.08years). LVGFI and LVEF were assessed by cine images and MIO by multislice multiecho T2* technique. Replacement myocardial fibrosis was detected by late gadolinium enhancement technique. RESULTS: LVGFI and LVEF were significantly lower in patients with significant MIO (global heart T2*<20ms) than in patients without MIO and in healthy subjects but were comparable between TM patients without MIO and healthy subjects. In TM, LVGFI was significantly associated with LVEF (R = 0.733; p < 0.0001). Global heart T2* values were significantly associated with both LVGFI and LVEF, but the correlation with LVGFI was significantly stronger (p = 0.0001). Male sex, diabetes mellitus, significant MIO, and replacement myocardial fibrosis were the strongest predictors of LVGFI. Eighty-six patients had a history of HF and showed significantly lower global heart T2* values, LVEF, and LVGFI than HF-free patients. A LVGFI ≤ 44.9% predicted the presence of HF. The LVGFI showed a diagnostic performance superior to that of LVEF (area under the curve: 0.67 vs. 0.62; p = 0.039). CONCLUSION: In TM patients the LVGFI correlates with MIO and provides incremental diagnostic value for HF detection compared with LVEF.


Assuntos
Cardiomiopatias , Insuficiência Cardíaca , Sobrecarga de Ferro , Talassemia beta , Adulto , Feminino , Humanos , Masculino , Talassemia beta/complicações , Talassemia beta/diagnóstico , Estudos Transversais , Meios de Contraste , Valor Preditivo dos Testes , Gadolínio , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/complicações , Sobrecarga de Ferro/diagnóstico por imagem , Sobrecarga de Ferro/etiologia , Função Ventricular Esquerda , Fibrose , Imageamento por Ressonância Magnética/métodos
19.
Diagnostics (Basel) ; 13(5)2023 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-36900034

RESUMO

We assessed the prognostic value of multiparametric cardiovascular magnetic resonance (CMR) in predicting death from heart failure (HF) in thalassemia major (TM). We considered 1398 white TM patients (30.8 ± 8.9 years, 725 women) without a history of HF at baseline CMR, which was performed within the Myocardial Iron Overload in Thalassemia (MIOT) network. Iron overload was quantified by using the T2* technique, and biventricular function was determined with cine images. Late gadolinium enhancement (LGE) images were acquired to detect replacement myocardial fibrosis. During a mean follow-up of 4.83 ± 2.05 years, 49.1% of the patients changed the chelation regimen at least once; these patients were more likely to have significant myocardial iron overload (MIO) than patients who maintained the same regimen. Twelve (1.0%) patients died from HF. Significant MIO, ventricular dysfunction, ventricular dilation, and replacement myocardial fibrosis were identified as significant univariate prognosticators. Based on the presence of the four CMR predictors of HF death, patients were divided into three subgroups. Patients having all four markers had a significantly higher risk of dying for HF than patients without markers (hazard ratio (HR) = 89.93; 95%CI = 5.62-1439.46; p = 0.001) or with one to three CMR markers (HR = 12.69; 95%CI = 1.60-100.36; p = 0.016). Our findings promote the exploitation of the multiparametric potential of CMR, including LGE, for better risk stratification for TM patients.

20.
Front Oncol ; 12: 951220, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36408148

RESUMO

Simple Summary: Although radiotherapy plays a fundamental role in the management of intermediate/high/very high-risk non-metastatic prostatic cancer (IHR-nmPca), there is still no consensus on the optimal treatment strategy in this setting. Remarkably, the role of elective nodal irradiation (ENI) is still highly controversial. The PROspective multicenter observational study on Elective Pelvic nodes Irradiation (PRO-EPI) was designed to provide "real life" data regarding the patterns of care for IHR-nmPca. Forty-three Italian Radiation Oncology centers participated in the PROspective multicenter observational study on Elective Pelvic nodes Irradiation (PRO-EPI) project, with 1029 patients enrolled. In this preliminary analysis, we longitudinally evaluated the impact of Elective Nodal Irradiation (ENI) and radiotherapy features on toxicity and quality of life (QoL). Six months follow-up data were available for 913 patients and 12 months data for 762 patients. Elective Nodal Irradiation was given to 506 patients (48.9%). Volumetric Intensity-Modulated Radiation Therapy (IMRT) was adopted in more than 77% of patients and Image-Guided Radiation Therapy (IGRT) in 84.4%. Androgen deprivation therapy (ADT) was administered to the majority of patients (68.3%), and it was associated to ENI in 408 cases (81.1%). Toxicity was mostly mild and reversible and IGRT resulted in a significant reduction of rectal toxicity, although a non-significant trend toward increased urinary toxicity was observed. No statistically significant differences in QoL and toxicity were seen in patients treated with or without ENI. The adoption of IGRT is widespread and increasing and could reduce treatment toxicity. ENI is not yet the standard treatment, but it is performed in a growing fraction of cases and not resulting into an increase in toxicity or in a deterioration of QoL. Further analyses are needed to clarify the long-term toxicity profile and the impact of ENI on survival.

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