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1.
Ann Hematol ; 103(2): 427-436, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38012435

RESUMO

Patients with chronic myeloid leukemia (CML) treated with nilotinib or ponatinib may experience arterial occlusive events (AOEs). It is currently recommended to thoroughly assess cardiovascular risk factors before treating CML. We identified 455 consecutive CML adult patients, 335 treated with nilotinib and 120 with ponatinib; 380 patients without previous cardiovascular diseases or diabetes were stratified according to the Systematic Coronary Risk Evaluation (SCORE2) and SCORE2-Older Persons (SCORE2-OP). This updated algorithm from the European Society of Cardiology (ESC) estimates a 10-year risk of fatal and non-fatal cardiovascular diseases. It is based on sex, age, smoking habits, systolic blood pressure, non-high-density lipoprotein cholesterol, and European geographical region of cardiovascular risk. The SCORE2/SCORE2-OP algorithm translated more patients (50.2%) to the high-very high cardiovascular risk category than the previous SCORE (25.3%). Patients with a high to very high SCORE2/SCORE2-OP risk showed a significantly higher incidence rate of AOEs (69.2% vs. 46.5%, p < 0.001). The older SCORE was less specific in estimating AOEs in patients classified as low-intermediate risk (69.8 vs. 54.2%). In multivariate analysis, no associations were found between AOEs and gender, age, and type or dose of tyrosine kinase inhibitor. Only the SCORE2/SCORE2-OP risk was confirmed as a significant predictive factor (p = 0.028; hazard ratio = 2.2; 95% confidence interval = 1.1-4.5). Patients with AOEs required, in most cases, imaging diagnostic tests, additional drugs, and sometimes invasive procedures, increasing access to visits and hospital management. This real-life study suggested that the SCORE2 and SCORE2-OP charts could help identify cardiovascular fragility in CML patients providing them with more attention and a proper TKI selection.


Assuntos
Doenças Cardiovasculares , Leucemia Mielogênica Crônica BCR-ABL Positiva , Piridazinas , Adulto , Humanos , Idoso , Idoso de 80 Anos ou mais , Doenças Cardiovasculares/induzido quimicamente , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/epidemiologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/induzido quimicamente , Imidazóis/efeitos adversos , Pirimidinas/uso terapêutico , Inibidores de Proteínas Quinases/efeitos adversos
2.
Br J Haematol ; 193(2): 271-279, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33403687

RESUMO

BCR-ABL1 kinase domain mutation testing in tyrosine kinase inhibitor (TKI)-resistant Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukaemia (ALL) patients is routinely performed by Sanger sequencing (SS). Recently, next-generation sequencing (NGS)-based approaches have been developed that afford greater sensitivity and straightforward discrimination between compound and polyclonal mutations. We performed a study to compare the results of SS and NGS in a consecutive cohort of 171 Ph+ ALL patients. At diagnosis, 0/44 and 3/44 patients were positive for mutations by SS and NGS respectively. Out of 47 patients with haematologic resistance, 45 had mutations according to both methods, but in 25 patients NGS revealed additional mutations undetectable by SS. Out of 80 patients in complete haematologic response but with BCR-ABL1 ≥0·1%, 28 (35%) and 52 (65%) were positive by SS and NGS respectively. Moreover, in 12 patients positive by SS, NGS detected additional mutations. NGS resolved clonal complexity in 34 patients with multiple mutations at the same or different codons and identified 35 compound mutations. Our study demonstrates that, in Ph+ ALL on TKI therapy, NGS enables more accurate assessment of mutation status both in patients who fail therapy and in patients with minimal residual disease above 0·1%.


Assuntos
Resistencia a Medicamentos Antineoplásicos/genética , Proteínas de Fusão bcr-abl/genética , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Neoplasia Residual/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Adulto , Idoso , Tomada de Decisão Clínica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mutação/genética , Neoplasia Residual/epidemiologia , Cromossomo Filadélfia/efeitos dos fármacos , Leucemia-Linfoma Linfoblástico de Células Precursoras/diagnóstico , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico
3.
Ann Hematol ; 100(8): 2005-2014, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33388860

RESUMO

Recommendations for dyslipidemia management aimed at reducing arterial occlusive events (AOEs) have been recently published. So far, no data have been reported on the management of dyslipidemia in chronic myeloid leukemia (CML) patients treated with nilotinib. We investigated 369 CML adult patients, stratified according to the new Systematic Coronary Risk Evaluation (SCORE) scoring system. Plasma levels of cholesterol, HDL, LDL, and triglycerides were measured prior to the start of nilotinib and after 3, 6, and 12 months. The 5-year cumulative incidence of AOEs was 15.9%. Patients with cholesterol levels > 200 mg/dL and LDL > 70 mg/dL 3 months after treatment showed a significantly higher incidence of AOEs (21.9 ± 4.6% vs 6.2 ± 2.5, P = 0.003). Patients belonging to the high and very high SCORE risk group showed a significant increase of AOEs (34.4 ± 6% vs 10 ± 2.1%, P < 0.001). In multivariate analysis, both high cholesterol and LDL levels and a high and very high SCORE risk remained significantly associated with the risk of AOEs (P = 0.008; HR = 3.5; 95% CI = 1.4-8.7 and P < 0.001; HR = 4.4; 95% CI = 2-9.8, respectively). Overall, 78 patients (21.1%) presented dyslipidemia at the time of CML diagnosis and 88 (23.3%) after starting nilotinib, but only 26 of them (29.5%) were treated with statins.Low LDL and cholesterol plasma levels are associated with a significant lower risk of AOEs in CML patients treated with nilotinib in the real life.


Assuntos
Antineoplásicos/uso terapêutico , Arteriopatias Oclusivas/sangue , Dislipidemias/sangue , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Lipoproteínas LDL/sangue , Pirimidinas/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Arteriopatias Oclusivas/etiologia , Colesterol/sangue , Dislipidemias/complicações , Feminino , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/sangue , Leucemia Mielogênica Crônica BCR-ABL Positiva/complicações , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
4.
Public Health Nutr ; 24(7): 1577-1582, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33100257

RESUMO

OBJECTIVE: The current study explored changes in trend of anaemia and BMI among currently pregnant nullipara adolescent women against socio-economic determinants in India from 2005 through 2015. The association between anaemia in currently pregnant nullipara adolescent women v. currently pregnant nullipara older women of reproductive age was also explored. DESIGN: We used the 2005 and the 2015 nationally representative Indian Demographic and Health Surveys (DHS). The outcomes of interest, anaemia and BMI, were measured based on the DHS methodology following WHO standards and indicators. Place of residence, educational attainment and wealth quintiles were used as determinants in the analysis. SETTING: India. PARTICIPANTS: In total, 696 adolescent girls from the India 2005 DHS and 3041 adolescent girls from the India 2015 DHS. RESULTS: The 10-year transition from 2005 to 2015 showed differences between the least and most wealthy sections of society, with heaviest gains in anaemia reduction over time among the latter (from 50·0 to < 40·0 %). The odds of anaemia were significantly higher among the adolescent population when compared with adult women both in 2005 and in 2015 (OR = 1·2). CONCLUSIONS: Despite an overall improvement in the prevalence of both BMI < 18·5 and anaemia among adolescents nullipara in India, the adjusted risk of anaemia in the latter category was still significantly higher as compared with their adult counterparts. Since the inequalities evidenced during the first round of DHS remained unchanged in 2015, more investments in universal health care are needed in India.


Assuntos
Anemia Ferropriva , Anemia , Adolescente , Adulto , Idoso , Anemia/epidemiologia , Anemia Ferropriva/epidemiologia , Índice de Massa Corporal , Estudos Transversais , Escolaridade , Feminino , Humanos , Índia/epidemiologia , Gravidez , Prevalência
5.
Tumour Biol ; 42(2): 1010428319901061, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32013807

RESUMO

Burkitt lymphoma is a very aggressive B-cell non-Hodgkin lymphoma. Although remarkable progress has been made in the therapeutic scenario for patients with Burkitt lymphoma, search and development of new effective anticancer agents to improve patient outcome and minimize toxicity has become an urgent issue. In this study, the antitumoral activity of Inula viscosa, a traditional herb obtained from plants collected on the Asinara Island, Italy, was evaluated in order to explore potential antineoplastic effects of its metabolites on Burkitt lymphoma. Raji human cell line was treated with increasing Inula viscosa extract concentration for cytotoxicity screening and subsequent establishment of cell cycle arrest and apoptosis. Moreover, gene expression profiles were performed to identify molecular mechanisms involved in the anticancer activities of this medical plant. The Inula viscosa extract exhibited powerful antiproliferative and cytotoxic activities on Raji cell line, showing a dose- and time-dependent decrease in cell viability, obtained by cell cycle arrest in the G2/M phase and an increase in cell apoptosis. The treatment with Inula viscosa caused downregulation of genes involved in cell cycle and proliferation (c-MYC, CCND1) and inhibition of cell apoptosis (BCL2, BCL2L1, BCL11A). The Inula viscosa extract causes strong anticancer effects on Burkitt lymphoma cell line. The molecular mechanisms underlying such antineoplastic activity are based on targeting and downregulation of genes involved in cell cycle and apoptosis. Our data suggest that Inula viscosa natural metabolites should be further exploited as potential antineoplastic agents against Burkitt lymphoma.


Assuntos
Linfoma de Burkitt/tratamento farmacológico , Proliferação de Células/efeitos dos fármacos , Inula/química , Proteínas de Neoplasias/genética , Apoptose/efeitos dos fármacos , Linfoma de Burkitt/genética , Linfoma de Burkitt/patologia , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Extratos Vegetais/química , Extratos Vegetais/farmacologia
6.
Ann Hematol ; 99(7): 1525-1530, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32474619

RESUMO

Hypertension is a commonly reported comorbidity in patients diagnosed with chronic myeloid leukemia (CML), and its management represents a challenge in patients treated with 2nd- or 3rd-generation tyrosine kinase inhibitors (TKIs), considering their additional cardiovascular (CV) toxicity. The renin angiotensin system (RAS) contributes to hypertension genesis and plays an important role in atherosclerosis development, proliferation, and differentiation of myeloid hematopoietic cells. We analyzed a cohort of 192 patients with hypertension at CML diagnosis, who were treated with 2nd- or 3rd-generation TKIs, and evaluated the efficacy of RAS inhibitors (angiotensin-converting enzyme inhibitors (ACEi) and angiotensin-II receptor blockers (ARBs)) in the prevention of arterial occlusive events (AOEs), as compared with other drug classes. The 5-year cumulative incidence of AOEs was 32.7 ± 4.2%. Patients with SCORE ≥ 5% (high-very-high) showed a significantly higher incidence of AOEs (33.7 ± 7.6% vs 13.6 ± 4.8%, p = 0.006). The AOE incidence was significantly lower in patients treated with RAS inhibitors (14.8 ± 4.2% vs 44 ± 1%, p < 0.001, HR = 0.283). The difference in the low and intermediate Sokal risk group was confirmed but not in the high-risk group, where a lower RAS expression has been reported. Our data suggest that RAS inhibitors may represent an optimal treatment in patients with hypertension and CML, treated with 2nd or 3rdG TKIs.


Assuntos
Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Hipertensão/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico , Trombose/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Quimioterapia Combinada , Feminino , Humanos , Hipertensão/complicações , Hipertensão/epidemiologia , Incidência , Leucemia Mielogênica Crônica BCR-ABL Positiva/complicações , Leucemia Mielogênica Crônica BCR-ABL Positiva/epidemiologia , Masculino , Pessoa de Meia-Idade , Inibidores de Proteínas Quinases/classificação , Sistema Renina-Angiotensina/efeitos dos fármacos , Fatores de Risco , Análise de Sobrevida , Trombose/prevenção & controle
7.
Chemotherapy ; 65(3-4): 110-114, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32950983

RESUMO

INTRODUCTION: Adult patients with acute myeloid leukemia (AML) are usually treated with intensive chemotherapy, leading to prolonged bone marrow aplasia. It is usually assumed that a short duration of aplasia could be a surrogate marker of poor therapeutic efficacy in clearing bone marrow blasts, especially in older patients. No studies have evaluated the usefulness of such a surrogate marker in younger AML patients treated with intensive chemotherapy. MATERIALS AND METHODS: In the present study, we retrospectively assessed the role of white blood cell (WBC) count nadir and duration of aplasia in 68 patients with AML treated with intensive chemotherapy and potentially candidate to stem cell transplantation. RESULTS: The median (interquartile range) bone marrow aplasia was 25 days, and the mean WBC count nadir from chemotherapy start was at day +12, whereas the median neutrophil recovery occurred at day +24. No significant differences were found between responders and nonresponders for mean aplasia duration (25 vs. 26 days, p value = 0.76), mean WBC count nadir (12 vs. 12 days, p value = 0.86), and median neutrophil recovery (24 vs. 24, p value = 0.67). DISCUSSION: The present study evaluated the potential prognostic role of WBC count nadir and duration of aplasia, demonstrating that they are not associated with treatment outcomes in adult patients with AML treated with intensive chemotherapy. Therefore, a short duration of aplasia seems not linked to poor therapeutic efficacy in clearing bone marrow blasts. Our findings, although needing validation in larger and more homogeneous cohorts, may offer helpful clues in the management of aplasia of AML patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Leucemia Mieloide Aguda/tratamento farmacológico , Leucócitos/citologia , Neutrófilos/citologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento
8.
Int J Mol Sci ; 21(23)2020 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-33255988

RESUMO

Nucleophosmin (NPM1) gene mutations rarely occur in non-acute myeloid neoplasms (MNs) with <20% blasts. Among nearly 10,000 patients investigated so far, molecular analyses documented NPM1 mutations in around 2% of myelodysplastic syndrome (MDS) cases, mainly belonging to MDS with excess of blasts, and 3% of myelodysplastic/myeloproliferative neoplasm (MDS/MPN) cases, prevalently classified as chronic myelomonocytic leukemia. These uncommon malignancies are associated with an aggressive clinical course, relatively rapid progression to overt acute myeloid leukemia (AML) and poor survival outcomes, raising controversies on their classification as distinct clinico-pathologic entities. Furthermore, fit patients with NPM1-mutated MNs with <20% blasts could benefit most from upfront intensive chemotherapy for AML rather than from moderate intensity MDS-directed therapies, although no firm conclusion can currently be drawn on best therapeutic approaches, due to the limited available data, obtained from small and mainly retrospective series. Caution is also suggested in definitely diagnosing NPM1-mutated MNs with blast count <20%, since NPM1-mutated AML cases frequently present dysplastic features and multilineage bone marrow cells showing abnormal cytoplasmic NPM1 protein delocalization by immunohistochemical staining, therefore belonging to NPM1-mutated clone regardless of blast morphology. Further prospective studies are warranted to definitely assess whether NPM1 mutations may become sufficient to diagnose AML, irrespective of blast percentage.


Assuntos
Crise Blástica/genética , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/patologia , Mutação/genética , Proteínas Nucleares/genética , Animais , Modelos Animais de Doenças , Hematopoese/genética , Humanos , Nucleofosmina
9.
Hematol Oncol ; 37(3): 296-302, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30892724

RESUMO

Arterial occlusive events (AOEs) represent emerging complications in chronic myeloid leukemia (CML) patients treated with ponatinib. We identified 85 consecutive CML adult patients who were treated with ponatinib in 17 Italian centers. Patients were stratified according to the Systematic Coronary Risk Evaluation (SCORE) assessment, based on sex, age, smoking habits, systolic blood pressure, and total cholesterol levels. The 60-month cumulative incidence rate of AOEs excluding hypertension was 25.7%. Hypertension was reported in 14.1% of patients. The median time of exposure to ponatinib was 28 months (range, 3-69 months). Patients with a high to very high SCORE risk showed a significantly higher incidence rate of AOEs (74.3% vs 15.2%, P < 0.001). Patients aged ≥60 years showed a significantly higher incidence rate of AOEs (51.5% vs 16.9%, P = 0.008). In multivariate analysis, no association was found between AOEs and positive history of CV disease, age, dose of ponatinib, previous exposure to nilotinib, and comorbidities. Only the SCORE risk was confirmed as a significant predictive factor (P = 0.01; HR = 10.9; 95% C.I. = 1.7-67.8). Patients aged ≥60 years who were treated with aspirin had a lower incidence rate of AOEs (33.3% vs 61.8%). Among the 14 reported AOEs, 78.6% of them showed grade 3 to 4 toxicity. This real-life study confirmed the increased incidence of AOEs in CML patients treated with ponatinib, with high to very high SCORE risk. We suggest that patients aged ≥60 years who were treated with ponatinib should undergo prophylaxis with 100 mg/day of aspirin. Our findings emphasize personalized prevention strategies based on CV risk factors.


Assuntos
Oclusão Coronária/induzido quimicamente , Imidazóis/efeitos adversos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Piridazinas/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Aspirina/uso terapêutico , Cardiologia/métodos , Oclusão Coronária/complicações , Sistemas de Apoio a Decisões Clínicas , Feminino , Humanos , Hipertensão/induzido quimicamente , Imidazóis/uso terapêutico , Incidência , Itália/epidemiologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/complicações , Masculino , Oncologia/métodos , Pessoa de Meia-Idade , Piridazinas/uso terapêutico , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Adulto Jovem
10.
Ann Hematol ; 98(8): 1885-1890, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31044260

RESUMO

There is little information about cardiovascular adverse event (CV-AE) incidence in chronic myeloid leukemia (CML) patients treated with bosutinib in the real-life practice. We identified 54 consecutive CML patients treated with bosutinib, stratified according to the Systematic Coronary Risk Evaluation (SCORE) assessment, based on sex, age, smoking habits, systolic blood pressure, and total cholesterol levels. The 40-month cumulative incidence of CV-AEs was 25.2 ± 8.1%. Patients with the SCORE of high-very high showed a significantly higher incidence of CV-AEs (55 ± 12.9% vs 9 ± 9.5%; p = 0.002). Overall, 9 CV-AEs were reported, with 2 deaths attributed to CV-AE. In conclusion, the SCORE assessment before starting treatment is helpful in identifying CV-AE high-risk patients during bosutinib treatment.


Assuntos
Compostos de Anilina/efeitos adversos , Antineoplásicos/efeitos adversos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Infarto do Miocárdio/induzido quimicamente , Nitrilas/efeitos adversos , Inibidores de Proteínas Quinases/efeitos adversos , Quinolinas/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Angina Pectoris/induzido quimicamente , Angina Pectoris/diagnóstico , Angina Pectoris/fisiopatologia , Compostos de Anilina/administração & dosagem , Antineoplásicos/administração & dosagem , Isquemia Encefálica/induzido quimicamente , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/fisiopatologia , Dasatinibe/administração & dosagem , Dasatinibe/efeitos adversos , Suscetibilidade a Doenças , Esquema de Medicação , Feminino , Humanos , Mesilato de Imatinib/administração & dosagem , Mesilato de Imatinib/efeitos adversos , Leucemia Mielogênica Crônica BCR-ABL Positiva/enzimologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/patologia , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/diagnóstico , Infarto do Miocárdio/fisiopatologia , Nitrilas/administração & dosagem , Doenças Vasculares Periféricas/induzido quimicamente , Doenças Vasculares Periféricas/diagnóstico , Doenças Vasculares Periféricas/fisiopatologia , Inibidores de Proteínas Quinases/administração & dosagem , Pirimidinas/administração & dosagem , Pirimidinas/efeitos adversos , Quinolinas/administração & dosagem , Estudos Retrospectivos
11.
Transfus Apher Sci ; 58(6): 102659, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31735654

RESUMO

BACKGROUND & OBJECTIVES: One of the most important problems in Mediterranean regions is finding blood donors to overcome the high need of its population. Understanding the health benefits of blood donation frequency will activate more volunteers to donate. The aim of this study variations of hematological and biochemical indices in regular male and female donors from Greece and Italy METHODS: A cross-sectional study consisted of 350 voluntary blood donors (VDs)was conducted in two mediterranean Blood Banks, Greece and Italy. The first one from the General Hospital of Naousa, Greece on samples of 90 regular and 60 first-time blood donors. The second one from AOU Sassari, Sardinia, Italy on convenient samples of 100 first-time samples and 100 regular blood donors. Donors' particulars were obtained from blood bank records. The hematological and biochemical parameters were determined for all donors and Total Antioxidant Status (TAS) only for greek VDs. RESULTS: High frequency blood donation of Greek VDs could be associated with evidence of reduction of body iron stores, reduced oxidative stress and improvement of liver function biomarkers in regular groups. Interestingly, Sardinian regular male VDs presented increased iron stores in compare with the first time VDs. In both Mediterranean populations (Greeks and Italians) the lipid profile of the female regular blood donors has been improved in compare with the first timers. CONCLUSION: Regular blood donation increases antioxidant capacity and affects positively the hematological parameters and biochemical biomarkers in donors. Gender plays an important role in relation to all hematological and biochemical parameters. Further studies in larger population should evaluate the beneficial-effect of blood donation and promote people to donate more frequent.


Assuntos
Antioxidantes/metabolismo , Doadores de Sangue , Adulto , Idoso , Feminino , Grécia , Humanos , Itália , Masculino , Região do Mediterrâneo , Pessoa de Meia-Idade
12.
Hematol Oncol ; 36(1): 15-23, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28449370

RESUMO

The clinical history of patients with myelodysplastic syndromes (MDS) is characterised by bone marrow insufficiency as well as by the possible evolution into acute leukaemia. However a number of reports highlight the frequent occurrence of autoimmune manifestations involving different sites and organs. The present review will first describe the clinical pictures most often observed in MDS patients. The actual burden of autoimmunity will be then addressed by focusing on the few available registry studies. Finally, the potential collateral impact of specific treatments for MDS on the evolution of autoimmune disorders will be considered.


Assuntos
Autoimunidade/imunologia , Síndromes Mielodisplásicas/complicações , Humanos , Síndromes Mielodisplásicas/terapia
15.
Angew Chem Int Ed Engl ; 56(11): 3014-3019, 2017 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-28156035

RESUMO

In the cure of cancer, a major cause of today's mortality, chemotherapy is the most common treatment, though serious frequent challenges are encountered by current anticancer drugs. We discovered that few-layer graphene (FLG) dispersions have a specific killer action on monocytes, showing neither toxic nor activation effects on other immune cells. We confirmed the therapeutic application of graphene on an aggressive type of cancer that is myelomonocytic leukemia, where the monocytes are in their malignant form. We demonstrated that graphene has the unique ability to target and boost specifically the necrosis of monocytic cancer cells. Moreover, the comparison between FLG and a common chemotherapeutic drug, etoposide, confirmed the higher specificity and toxicity of FLG. Since current chemotherapy treatments of leukemia still cause serious problems, these findings open the way to new and safer therapeutic approaches.


Assuntos
Grafite/farmacologia , Leucemia Mieloide Aguda/tratamento farmacológico , Leucemia Mielomonocítica Crônica/tratamento farmacológico , Leucócitos Mononucleares/efeitos dos fármacos , Proteínas Filagrinas , Grafite/química , Humanos , Leucemia Mieloide Aguda/patologia , Leucemia Mielomonocítica Crônica/patologia , Leucócitos Mononucleares/patologia , Tamanho da Partícula , Propriedades de Superfície , Células Tumorais Cultivadas
18.
Hematol Oncol ; 38(4): 607-610, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32602167
20.
Eur J Haematol ; 94(4): 298-309, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25040028

RESUMO

Although a number of studies suggest that different immune pathways may play a role in the pathogenesis of non-Hodgkin's lymphomas (NHL), the shape of the T-cell compartment has been only superficially explored in these patients. In our study, we analyzed the peripheral T-cell receptor (TCR) repertoire and the distribution of different T-cell subsets - including regulatory T cells (Treg) - in 30 patients with NHL, by combining flow cytometry and spectratyping. We first demonstrated by flow cytometry an increased frequency of expanded T-cell subpopulations expressing the same TCR beta variable (BV) subfamilies in CD8+ cells from NHL patients when compared with healthy controls, beside a higher frequency of Treg. Moreover, NHL patients were characterized by a higher percentage of BVs showing a skewed CDR3 profile both in CD4+ and CD8+ cells when analyzed by spectratyping. Our data suggest that the T-cell branch of the immune system of patients with B-cell NHL is deeply deranged, as witnessed by the increased degree of activation and skewing of their TCR repertoire along with the higher frequency of Treg.


Assuntos
Linfoma de Células B/genética , Linfoma de Células B/imunologia , Receptores de Antígenos de Linfócitos T/genética , Receptores de Antígenos de Linfócitos T/metabolismo , Subpopulações de Linfócitos T/imunologia , Subpopulações de Linfócitos T/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Medula Óssea/patologia , Evolução Clonal , Regiões Determinantes de Complementaridade/genética , Regiões Determinantes de Complementaridade/metabolismo , Feminino , Citometria de Fluxo , Humanos , Imunofenotipagem , Imunoterapia , Contagem de Linfócitos , Linfoma de Células B/diagnóstico , Linfoma de Células B/terapia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Receptores de Antígenos de Linfócitos T alfa-beta/genética , Receptores de Antígenos de Linfócitos T alfa-beta/metabolismo , Subpopulações de Linfócitos T/efeitos dos fármacos
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