RESUMO
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in 2019 in China and rapidly spread worldwide, leading to a pandemic. The threat of SARS-CoV-2 is subsiding as most people have acquired sufficient antibodies through vaccination and/or infection to prevent severe COVID-19. After the emergence of the omicron variants, the seroprevalence of antibodies against the N protein elicited by SARS-CoV-2 infection ranged from 44.4% to 80.2% in countries other than Japan. Here, we assessed the seroprevalence in Japan before and after the appearance of omicron variants. Serosurveillance of antibodies against N was conducted between December 2021 and March 2023 in Japan. In total, 7604 and 3354 residual serum or plasma samples were collected in the Tokyo metropolitan area and Sapporo, respectively. We found that the seroprevalence in representative regions of Japan increased approximately 3% to 23% after the emergence of the omicron variants. We also found higher seroprevalence among the young compared with the elderly. Our findings indicate that unlike other countries, most of the Japanese population has not been infected, raising the possibility of future SARS-CoV-2 epidemics in Japan.
Assuntos
COVID-19 , SARS-CoV-2 , Idoso , Humanos , Japão/epidemiologia , Estudos Soroepidemiológicos , COVID-19/epidemiologia , Anticorpos Antivirais , PandemiasRESUMO
For successful chimeric antigen receptor T (CAR-T) cell therapy, CAR-T cells must be manufactured without failure caused by suboptimal expansion. In order to determine risk factors for CAR-T cell manufacturing failure, we performed a nationwide cohort study in Japan and analysed patients with diffuse large B-cell lymphoma (DLBCL) who underwent tisagenlecleucel production. We compared clinical factors between 30 cases that failed (7.4%) with those that succeeded (n = 378). Among the failures, the proportion of patients previously treated with bendamustine (43.3% vs. 14.8%; p < 0.001) was significantly higher, and their platelet counts (12.0 vs. 17.0 × 104 /µL; p = 0.01) and CD4/CD8 T-cell ratio (0.30 vs. 0.56; p < 0.01) in peripheral blood at apheresis were significantly lower than in the successful group. Multivariate analysis revealed that repeated bendamustine use with short washout periods prior to apheresis (odds ratio [OR], 5.52; p = 0.013 for ≥6 cycles with washout period of 3-24 months; OR, 57.09; p = 0.005 for ≥3 cycles with washout period of <3 months), low platelet counts (OR, 0.495 per 105 /µL; p = 0.022) or low CD4/CD8 ratios (Assuntos
Linfoma Difuso de Grandes Células B
, Receptores de Antígenos Quiméricos
, Humanos
, Receptores de Antígenos Quiméricos/uso terapêutico
, Linfócitos T
, Estudos de Coortes
, Japão/epidemiologia
, Cloridrato de Bendamustina/uso terapêutico
, Receptores de Antígenos de Linfócitos T/uso terapêutico
, Linfoma Difuso de Grandes Células B/tratamento farmacológico
, Imunoterapia Adotiva
, Fatores de Risco
RESUMO
The analysis of 165 children and adolescents/young adults with de novo blastic phase chronic myeloid leukemia showed disease status at hematopoietic stem cell transplantation was a strong prognostic factor and clearly separated the patient outcomes.
Assuntos
Transplante de Células-Tronco Hematopoéticas , Leucemia Mielogênica Crônica BCR-ABL Positiva , Humanos , Criança , Adolescente , Adulto Jovem , Transplante Homólogo , Estudos Retrospectivos , Inibidores de Proteínas Quinases/uso terapêutico , Inibidores de Proteínas Quinases/farmacologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapiaRESUMO
Purpose: This study aimed to explore whether umbilical cord-derived mesenchymal stem cells (UC-MSCs) could be used as a therapeutic resource for endometriosis. Methods: Of seven cynomolgus monkeys with endometriosis, five were administered UC-MSCs (intervention group) and two were administered saline (control group). First, intravenous US-MSC treatment was administered for three months. Second, weekly intravenous US-MSC administration combined with monthly intraperitoneal US-MSC administration was conducted for 3 months. Finally, weekly intraperitoneal US-MSC administration was conducted for 3 months. The dose of UC-MSCs was set to 2 × 106 cells/kg for all administration routes. Laparoscopic findings and serum cancer antigen 125 (CA125) levels were also evaluated. The Revised American Society for Reproductive Medicine classification was used for laparoscopic evaluation. Results: Laparoscopic findings showed exacerbation of endometriosis after intraperitoneal UC-MSC administration, although no changes were observed in the control group. Intravenous UC-MSC administration decreased the level of CA125 in all monkeys; however, the difference was not significant. Intraperitoneal UC-MSC administration significantly exacerbated endometriosis compared with intravenous administration (p = 0.02). Conclusions: This study revealed that intraperitoneal UC-MSC administration exacerbates endometriosis in a nonhuman primate model of the disease.
RESUMO
The frequency of the manufacturing failure of chimeric antigen receptor (CAR)-T cell therapy in clinical practice is unknown. To clarify the current state of how likely CAR-T cell production is to succeed or fail for B-cell acute lymphoblastic leukemia (B-ALL), we analyzed cases in which the production of tisagenlecleucel was performed for patients with B-ALL at 15 facilities in Japan from October 2019 to March 2022. Total 81 patients (47 males and 34 females) were analyzed. The median age at apheresis was 13 years (1-25) with a median number of prior treatments of 4 (1-9). The numbers of patients with histories of allogeneic transplantation, inotuzumab ozogamicin, or blinatumomab treatments were 51 (63.0%), 26 (32.1%), and 37 (45.7%), respectively. The median blast percentage and CD3+ cell counts in peripheral blood were 0% (0-91.5), and 611/µl (35-4,210) at apheresis, and the median number of CD3+ cells shipped was 2.2×109 (0.5-8.3). While cases with a history of heavy prior treatment before apheresis were included, no manufacturing failures were observed. Continuing to monitor the status of manufacturing failures is necessary as the number of B-ALL cases treated with CAR-T cell therapy increases.
Assuntos
Leucemia-Linfoma Linfoblástico de Células Precursoras B , Leucemia-Linfoma Linfoblástico de Células Precursoras , Receptores de Antígenos Quiméricos , Medicina Transfusional , Masculino , Feminino , Humanos , Lactente , Pré-Escolar , Criança , Adolescente , Adulto Jovem , Adulto , Japão , Receptores de Antígenos de Linfócitos T , Imunoterapia Adotiva/métodos , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras B/tratamento farmacológico , Terapia Baseada em Transplante de Células e Tecidos , Antígenos CD19RESUMO
The introduction of tyrosine kinase inhibitors (TKIs) in chronic myeloid leukemia (CML) treatment has dramatically improved the prognosis of CML patients and reduced the number of patients receiving allogeneic stem cell transplantation (allo-SCT). However, the impact of the newest-generation TKIs on the overall survival (OS) after allo-SCT has not been well described. To investigate the beneficial effects of TKIs on the prognosis after allo-SCT, we conducted a retrospective observational study using the Transplant Registry Unified Management Program database in Japan. We analyzed 1188 patients (male/female: 738/450; median age: 44 years; range: 16-75) who underwent their first allo-SCT between January 2001 and December 2018. We divided the patients into two groups according to the TKI treatment used before allo-SCT: group 1 was treated with the first generation TKI imatinib; group 2 was treated with the second generation TKIs nilotinib, dasatinib, or bosutinib and/or the third generation TKI ponatinib. We compared the post allo-SCT OS between the two groups. The 3-year OS rates (95%CI) of groups 1 and 2 were 59.3% (54.8%-63.5%) and 65.8% (61.6%-69.6%), respectively (p = 0.017). Multivariate analysis confirmed that group 2 had superior OS after allo-SCT compared to group 1 (p = 0.002). Other factors associated with superior prognosis were age ≤65, performance status (PS) 0/1, a 6/6 HLA-matched donor and chronic-phase (CP) disease status at allo-SCT. A subgroup analysis showed poor prognoses for patients who could not obtain a molecular response before allo-SCT and patients with positive T315I mutation in the BCR/ABL gene. In group 2, early allo-SCT was correlated with superior OS in patients with a blast-crisis disease status at allo-SCT (p = 0.001). The cumulative incidence of non-relapse mortality rate significantly decreased in group 2 (p = 0.0005). The post allo-SCT OS was improved both by pre- and post-management of allo-SCT and by the introduction of newer TKIs.
Assuntos
Transplante de Células-Tronco Hematopoéticas , Leucemia Mielogênica Crônica BCR-ABL Positiva , Adolescente , Adulto , Idoso , Dasatinibe/uso terapêutico , Feminino , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/genética , Masculino , Pessoa de Meia-Idade , Inibidores de Proteínas Quinases/uso terapêutico , Transplante Homólogo , Adulto JovemRESUMO
Chromosomal abnormalities in the role of prognostic factor for transplant patients with myelofibrosis (MF) are not fully investigated. Regarding complex karyotype (CK), we retrospectively analyzed 241 patients with primary and secondary MF who received a first allogeneic hematopoietic cell transplantation (HCT). Based on an unfavorable karyotype in the Dynamic International Prognostic Scoring System, we compared the outcomes in 3 groups: favorable karyotype, unfavorable karyotype including CK (unfavorable-CK(+)), and unfavorable karyotype not including CK (unfavorable-CK(-)). Overall survival was significantly shorter in the unfavorable-CK(+) group (hazard ratio (HR) 2.49, 95% CI: 1.46-4.24, P < 0.001), whereas there was no difference between the unfavorable-CK(-) group and the favorable group (HR 0.57, 95% CI: 0.20-1.59, P = 0.28). In addition, a significantly higher proportion of patients in the unfavorable-CK(+) group did not achieve complete remission after HCT (P = 0.007). The cumulative incidence of disease progression was significantly higher in the unfavorable-CK(+) group (HR 2.5, 95% CI 1.6-3.92, P < 0.001), whereas that in the unfavorable-CK(-) group was comparable to that in the favorable group (HR 0.49, 95% CI 0.12-1.94, P = 0.31). Further investigations will be needed to clarify the impact of CK on transplant outcomes in MF.
Assuntos
Prognóstico , Humanos , Estudos RetrospectivosRESUMO
BACKGROUND: The standard cryoprotectant for human cellular products is dimethyl sulfoxide (DMSO), which is associated with hematopoietic cell infusion-related adverse events (HCI-AEs) in hematopoietic stem cell transplantation including peripheral blood stem cell (PBSC) transplantation (PBSCT). DMSO is often used with hydroxyethyl starch (HES), which reduces DMSO concentration while maintaining the postthaw cell recovery. The cryoprotectant medium CP-1 (Kyokuto Pharmaceutical Industrial) is widely used in Japan. After mixture of a product with CP-1, DMSO and HES concentrations are 5% and 6%, respectively. However, the safety profile of CP-1 in association with HCI-AEs has not been investigated. STUDY DESIGN AND METHODS: To compare CP-1 with other cryoprotectants, we conducted a subgroup analysis of PBSCT recipients in a prospective surveillance study for HCI-AEs. Moreover, we validated the toxicity of CP-1 in 90 rats following various dose administration. RESULTS: The PBSC products cryopreserved with CP-1 (CP-1 group) and those with other cryoprotectants, mainly 10% DMSO (non-CP-1 group), were infused into 418 and 58 recipients, respectively. The rate of ≥grade 2 HCI-AEs was higher in the CP-1 group, but that of overall or ≥grade 3 HCI-AEs was not significantly different, compared to the non-CP-1 group. Similarly, after propensity score matching, ≥grade 2 HCI-AEs were more frequent in the CP-1 group, but the ≥grade 3 HCI-AE rate did not differ significantly between the groups. No significant toxicity was detected regardless of the CP-1 dose in the 90 rats. CONCLUSIONS: Infusion of a CP-1-containing PBSC product is feasible with the respect of HCI-AEs.
Assuntos
Dimetil Sulfóxido , Transplante de Células-Tronco Hematopoéticas , Animais , Criopreservação/métodos , Crioprotetores/efeitos adversos , Dimetil Sulfóxido/toxicidade , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Estudos Prospectivos , RatosRESUMO
Traumatic central nervous system (CNS) injury often causes irreversible impairment, and new alternative therapies for the treatment of CNS injury and sequelae are expected to be developed. Recently, mesenchymal stromal cells (MSCs) have started being used as cell therapy for neurological disorders such as traumatic CNS injury based on their immunomodulatory, neuroprotective, and neurorestorative abilities. Based on the premise of basic research, numerous clinical trials using MSCs for the treatment of traumatic CNS injury have been performed, and the feasibility and efficacy of this therapy have been reported. In this review we aimed to shed light on the characteristics of MSCs and to discuss the basic and clinical research and recent progress in clinical studies using MSCs to treat various traumatic neurological injuries.
Assuntos
Células-Tronco Mesenquimais , Traumatismos do Sistema Nervoso , Terapia Baseada em Transplante de Células e Tecidos , Sistema Nervoso Central , HumanosRESUMO
The female physician career symposium entitled "Thinking about the Careers of Diverse Female Physician" was held at the 2021 annual meeting. Herein, I introduced my carrier not only to female but also male physicians to establish their unique original carrier path and recognize their worth of existence. Until reaching the final goal of your research and job, you will always be in an uphill course with some valley to be overcome by efforts. Similarly, life is always uphill, and the time of marriage and child-rearing is inevitably a valley to be filled with support by your environment and originality to appeal to the worth of existence.
Assuntos
Médicas , Médicos , Feminino , Humanos , MasculinoRESUMO
This study was performed to assess the utility of tumor-derived fragmentary DNA, or circulating tumor DNA (ctDNA), for identifying high-risk patients for relapse of acute myeloid leukemia and myelodysplastic syndrome (AML/MDS) after undergoing myeloablative allogeneic hematopoietic stem cell transplantation (alloSCT). We retrospectively collected tumor and available matched serum samples at diagnosis and 1 and 3 months post-alloSCT from 53 patients with AML/MDS. After identifying driver mutations in 51 patients using next-generation sequencing, we designed at least 1 personalized digital polymerase chain reaction assay per case. Diagnostic ctDNA and matched tumor DNA exhibited excellent correlations with variant allele frequencies. Sixteen patients relapsed after a median of 7 months post-alloSCT. Both mutation persistence (MP) in bone marrow (BM) at 1 and 3 months post-alloSCT and corresponding ctDNA persistence (CP) in the matched serum (MP1 and MP3; CP1 and CP3, respectively) were comparably associated with higher 3-year cumulative incidence of relapse (CIR) rates (MP1 vs non-MP1, 72.9% vs 13.8% [P = .0012]; CP1 vs non-CP1, 65.6% vs 9.0% [P = .0002]; MP3 vs non-MP3, 80% vs 11.6% [P = .0002]; CP3 vs non-CP3, 71.4% vs 8.4% [P < .0001]). We subsequently evaluated whether subset analysis of patients with 3 genes associated with clonal hematopoiesis, DNMT3A, TET2, and ASXL1 (DTA), could also be helpful in relapse prediction. As a result, CP based on DTA gene mutations also had the prognostic effect on CIR. These results, for the first time, support the utility of ctDNA as a noninvasive prognostic biomarker in patients with AML/MDS undergoing alloSCT.
Assuntos
Biomarcadores Tumorais/sangue , DNA Tumoral Circulante/análise , Leucemia Mieloide Aguda/sangue , Síndromes Mielodisplásicas/sangue , Adolescente , Adulto , Idoso , Feminino , Transplante de Células-Tronco Hematopoéticas/mortalidade , Humanos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/terapia , Masculino , Pessoa de Meia-Idade , Síndromes Mielodisplásicas/genética , Síndromes Mielodisplásicas/terapia , Recidiva Local de Neoplasia/sangue , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/mortalidade , Prognóstico , Estudos Retrospectivos , Análise de Sobrevida , Adulto JovemRESUMO
BACKGROUND: Hematopoietic cell infusion-related adverse events (HCI-AEs) in hematopoietic stem cell transplantations (HSCTs) have been largely attributed to toxicity of dimethyl sulfoxide (DMSO) for cryopreservation, but HSC products also contain various cells and plasma components. Our recent prospective study of 1125 HSCT recipients revealed the highest overall HCI-AE rate in bone marrow transplantation (BMT) using fresh/noncryopreserved products, although products of peripheral blood stem cell transplantation and cord blood transplantation (CBT) are generally cryopreserved with DMSO containing smaller plasma volumes. We aimed to clarify if product volume and component effects are more substantial in small recipients including children. STUDY DESIGN AND METHODS: We performed subgroup analysis on 219 recipients of 45 kg or less body weight (whole small recipients), including 90 children (pediatric recipients), from the original cohort (general recipients). RESULTS: Whereas overall HCI-AE rates did not differ among hematopoietic stem cell sources in the general recipients, bradycardia most often occurred after CBT in whole small recipients. Conversely, whole small and general recipients shared the same trend of having the highest rate of hypertension in BMT. The overall HCI-AE rate was higher in allogeneic HSCT compared with autologous HSCT. Notably, pediatric recipients showed a 10-fold higher incidence of nausea and vomiting in allogeneic HSCT compared with autologous HSCT, suggesting a possible role of allogeneic antigens. Multivariate analysis identified a relatively large infusion volume per body weight as a significant factor correlating with HCI-AE in whole small recipients. CONCLUSIONS: We should be aware of product volume and specific HCI-AEs such as nausea and vomiting in small patients including children.
Assuntos
Peso Corporal/fisiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Transplante de Células-Tronco Hematopoéticas/estatística & dados numéricos , Reação Transfusional/epidemiologia , Adolescente , Adulto , Fatores Etários , Idoso , Transplante de Medula Óssea/efeitos adversos , Transplante de Medula Óssea/estatística & dados numéricos , Criança , Pré-Escolar , Estudos de Coortes , Criopreservação/métodos , Criopreservação/estatística & dados numéricos , Crioprotetores/efeitos adversos , Dimetil Sulfóxido/efeitos adversos , Feminino , Células-Tronco Hematopoéticas , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Transplante de Células-Tronco de Sangue Periférico/efeitos adversos , Transplante de Células-Tronco de Sangue Periférico/estatística & dados numéricos , Reação Transfusional/etiologia , Transplante Homólogo/efeitos adversos , Transplante Homólogo/estatística & dados numéricos , Adulto JovemRESUMO
BACKGROUND: Recent progress in chemotherapy has prolonged the survival of patients with hematological diseases, but has also increased the number of patients with chemotherapy-related cardiac dysfunction (CTRCD). However, the causes of individual variations and risk factors for CTRCD have yet to be fully elucidated.MethodsâandâResults:Consecutive echocardiograms of 371 patients were retrospectively evaluated for the presence of left ventricular (LV) non-compaction (LVNC). Individual LV ejection fraction (LVEF) outcome estimates were made using bivariate linear regression with log-transformed duration Akaike information criterion (AIC) model fitting. The prevalence of LVNC was 6-fold higher in patients with hematological diseases than in those with non-hematological diseases (12% vs. 2%; risk ratio 6.1; 95% confidence interval [CI] 2.0, 18.2). Among patients with hematological diseases, the ratio of myeloid diseases was significantly higher in the group with LVNC (P=0.031). Deterioration of LVEF was more severe in patients with than without LVNC (-14.4 percentage points/year [95% CI -21.0, -7.9] vs. -4.6 percentage points/year [95% CI -6.8, -2.4], respectively), even after multivariate adjustment for baseline LVEF, background disease distributions, cumulative anthracycline dose, and other baseline factors. CONCLUSIONS: LVNC is relatively prevalent in patients with hematological diseases (particularly myeloid diseases) and can be one of the major risk factors for CTRCD. Detailed cardiac evaluations including LVNC are recommended for patients undergoing chemotherapy.
Assuntos
Cardiopatias , Doenças Hematológicas , Disfunção Ventricular Esquerda , Cardiopatias/induzido quimicamente , Cardiopatias/epidemiologia , Doenças Hematológicas/tratamento farmacológico , Doenças Hematológicas/epidemiologia , Humanos , Valor Preditivo dos Testes , Prevalência , Estudos Retrospectivos , Disfunção Ventricular Esquerda/induzido quimicamente , Disfunção Ventricular Esquerda/epidemiologia , Função Ventricular EsquerdaRESUMO
Tyrosine kinase inhibitors (TKIs) are widely used to treat patients with chronic myelogenous leukemia in the chronic phase (CML-CP), and outcomes of TKI treatment for patients with CML-CP have been excellent. Since multiple TKIs are currently available, second-line or third-line TKI therapy is considered for patients who are intolerant of or resistant to the previous TKI treatment. Therefore, allogeneic hematopoietic stem cell transplantation (allo-HSCT) is considered only for patients with disease progression or for patients after treatment failure with multiple TKIs. To reflect the current clinical situation of patients with CML-CP, we tried to clarify whether prior TKI treatment affects the outcome of allo-HSCT. Data from 237 patients for whom the number of pretransplant TKIs varied from one to three were used for analysis. Before allo-HSCT, 153 patients were treated with one TKI, 49 patients were treated with two TKIs and 35 patients were treated with three TKIs. In addition to conventional risk factors, i.e., disease status at transplantation and patient's age, the use of three TKIs before transplantation was identified as a significant adverse factor for prognosis. Nonrelapse mortality rate was higher in patients treated with three TKIs than in patients treated with one or two TKIs. Our results suggest that allo-HSCT could be considered for young patients with CML-CP who manifest resistance to second-line TKI therapy and who have an appropriate donor.
Assuntos
Transplante de Células-Tronco Hematopoéticas , Leucemia Mielogênica Crônica BCR-ABL Positiva/mortalidade , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Inibidores de Proteínas Quinases/administração & dosagem , Adulto , Idoso , Aloenxertos , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Taxa de SobrevidaRESUMO
To investigate an up-to-date alternative donor selection strategy, we compared the transplantation outcomes of 8/8 and 7/8 allele-matched unrelated bone marrow transplantation (UBMT) with those of umbilical cord blood transplantation (UCBT) and redefined the role of UCBT with extended analysis. Using Cox and competing risk regression analyses, we analyzed the transplantation outcomes in adult patients with acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML). A total of 2472 first myeloablative transplantations between 2000 and 2010 were included (8/8 UBMT, 1001; 7/8 UBMT, 656; UCBT, 815). For acute and chronic graft-versus-host disease (GVHD) and nonrelapse mortality (NRM), we applied the combined analyses including both AML and ALL data. In the multivariate analyses, severe acute GVHD and NRM after UCBT were comparable with 8/8 UBMT, whereas those after 7/8 UBMT were significantly higher. The incidence of extensive chronic GVHD was significantly lower with UCBT compared with after 8/8 and 7/8 UBMT. With adjusted analyses for AML, UCBT and 8/8 UBMT showed similar overall survival (OS), whereas 7/8 UBMT showed inferior OS. For ALL, we found no significant difference in OS among the 3 groups. Cord blood may be the first choice alternative to 8/8 UBMT for both AML and ALL.
Assuntos
Transplante de Medula Óssea/métodos , Transplante de Células-Tronco de Sangue do Cordão Umbilical/métodos , Leucemia Mieloide Aguda/terapia , Adolescente , Adulto , Alelos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Adulto JovemRESUMO
We conducted a retrospective analysis to compare outcomes in adult patients with acute lymphoblastic leukemia (ALL) who underwent allogeneic hematopoietic cell transplantation (allo-HCT) with conditioning regimens containing cyclophosphamide (CY) in combination with total body irradiation (TBI), oral busulfan (p.o. BU), or intravenous busulfan (i.v. BU). We used data for January 2000 to December 2012 from the Transplant Registry Unified Management Program of the Japan Society of Hematopoietic Cell Transplantation. We identified 2130 patients treated with TBI/CY (n = 2028), p.o. BU/CY (n = 60), or i.v. BU/CY (n = 42). Two-year overall survival (OS) and 2-year relapse-free survival rates were 69.0% and 62.1%, respectively, in the TBI/CY group, 55.9% and 54.2% in the p.o. BU/CY group, and 71.0% and 46.8% in the i.v. BU/CY group. In multivariate analysis, compared with TBI/CY, p.o. BU/CY, but not i.v. BU/CY, was associated with lower OS (hazard ratio [HR], 1.46; P = .047) and a higher incidence of sinusoidal obstruction syndrome (HR, 3.36; P = .030). No between-group differences were seen in the incidence of nonrelapse mortality, relapse, acute graft-versus-host disease (GVHD), or chronic GVHD. We suggest that i.v. BU/CY might be a possible alternative allo-HCT conditioning regimen for adults with ALL who are not suitable for TBI.
Assuntos
Bussulfano/administração & dosagem , Ciclofosfamida/uso terapêutico , Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Condicionamento Pré-Transplante/métodos , Transplante Homólogo/métodos , Irradiação Corporal Total , Adolescente , Adulto , Idoso , Quimiorradioterapia , Feminino , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Pessoa de Meia-Idade , Leucemia-Linfoma Linfoblástico de Células Precursoras/complicações , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/radioterapia , Estudos Retrospectivos , Condicionamento Pré-Transplante/efeitos adversos , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND AIMS: The human umbilical cord (UC) is a rich source of mesenchymal stromal cells (MSCs), which have been reported to have multi-lineage potential. The objectives of this study were to investigate the characteristics and capacity of UC-MSC neurosphere formation and whether this event enhances the propensity of UC-MSCs to undergo neural differentiation. METHODS: UC-MSCs were collected by the improved explant method. UC-MSCs and neurosphere-forming UC-MSCs (UC-MSC-neurospheres) were induced to undergo neurogenic differentiation, the latter of which were induced by suspension culturing in the presence of epidermal growth factor and basic fibroblast growth factor. The differentiation and migratory capacities of the individual cultures were then compared on the basis of the expression of neural markers, as measured by immunocytochemistry, immunoblotting and quantitative real-time polymerase chain reaction and transwell assays, respectively. RESULTS: Both UC-MSCs and UC-MSC-neurospheres were capable of differentiating into neurogenic cells when cultured in neurogenic differentiation medium. However, pre-conditioned UC-MSC-neurospheres exhibited significantly higher expression of neural markers--including microtubule-associated protein (MAP2), MUSASHI1, glial fibrillary acidic protein (GFAP), and NESTIN--compared with those derived from UC-MSCs directly. Moreover, UC-MSC-neurospheres expressed significantly higher levels of the stemness markers NANOG, KLF4 and OCT4 than did UC-MSCs. Migration assays also revealed that both UC-MSCs and UC-MSC-neurospheres actively migrate toward glucose-depleted cells. CONCLUSIONS: Neurogenic differentiation potential probably is greater in UC-MSC-neurospheres than in UC-MSCs. Thus, UC-MSC-neurospheres may serve as a better source of cells for neurogenic regenerative medicine.
Assuntos
Células-Tronco Mesenquimais/citologia , Neurogênese/fisiologia , Esferoides Celulares/citologia , Cordão Umbilical/citologia , Biomarcadores/metabolismo , Técnicas de Cultura de Células , Movimento Celular/fisiologia , Fator de Crescimento Epidérmico/farmacologia , Fator 2 de Crescimento de Fibroblastos/farmacologia , Proteína Glial Fibrilar Ácida/biossíntese , Proteínas de Homeodomínio/biossíntese , Humanos , Fator 4 Semelhante a Kruppel , Fatores de Transcrição Kruppel-Like/biossíntese , Proteínas Associadas aos Microtúbulos/biossíntese , Proteína Homeobox Nanog , Proteínas do Tecido Nervoso/biossíntese , Nestina/biossíntese , Fator 3 de Transcrição de Octâmero/biossíntese , Proteínas de Ligação a RNA/biossíntese , Reação em Cadeia da Polimerase em Tempo RealRESUMO
BACKGROUND: While unrelated bone marrow transplantation (UBMT) has been widely used as alternative donor transplantation, the use of umbilical cord blood transplantation (UCBT) is increasing recently. METHODS: We conducted a decision analysis to address which transplantation procedure should be prioritized for younger patients with acute myeloid leukemia (AML) harboring high- or intermediate-risk cytogenetics in first complete remission (CR1), when they lack a matched related donor but have immediate access to a suitable umbilical cord blood unit. Main sources for our analysis comprised the data from three phase III trials for a chemotherapy cohort (n = 907) and the registry data for a transplantation cohort (n = 752). RESULTS: The baseline analysis showed that when the 8/8 match was considered for UBMT, the expected 5-year survival rate was higher for UBMT than for UCBT (58.1% vs. 51.8%). This ranking did not change even when the 7/8 match was considered for UBMT. Sensitivity analysis showed consistent superiority of UBMT over UCBT when the time elapsed between CR1 and UBMT was varied within a plausible range of 3-9 months. CONCLUSIONS: These results suggest that 8/8 or 7/8 UBMT is a better transplantation option than UCBT even after allowing time required for donor coordination.
Assuntos
Transplante de Medula Óssea , Transplante de Células-Tronco de Sangue do Cordão Umbilical , Leucemia Mieloide Aguda/terapia , Adolescente , Adulto , Transplante de Medula Óssea/métodos , Tomada de Decisão Clínica , Ensaios Clínicos Fase III como Assunto , Transplante de Células-Tronco de Sangue do Cordão Umbilical/métodos , Feminino , Humanos , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/mortalidade , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Indução de Remissão , Doadores de Tecidos , Transplante Homólogo , Resultado do Tratamento , Adulto JovemRESUMO
We retrospectively compared the transplantation outcomes for patients 50 years or older who received umbilical cord blood transplantation (UCBT) with those who received unrelated bone marrow transplantation (UBMT) for hematologic malignancies. A total of 1377 patients who underwent transplantation between 2000 and 2009 were included: 516 received 8/8 HLA allele-matched UBMT, 295 received 7/8 HLA allele-matched UBMT, and 566 received 4/6 to 6/6 HLA-matched UCBT. Adjusted overall survival (OS) was significantly lower in those who underwent UCBT than those who underwent 8/8 HLA-matched UBMT but was similar to that of 7/8 HLA-matched UBMT (the 2-year OS after 8/8 HLA-matched UBMT, 7/8 HLA-matched UBMT, and UCBT were 49% [95% confidence interval (CI), 45% to 55%], 38% [95% CI, 32% to 45%], and 39% [95% CI, 34% to 43%], respectively). However, adjusted OS was similar between 8/8 HLA-matched UBMT and UCBT receiving ≥.84 × 10(5) CD34(+) cells/kg among those with acute myeloid leukemia and those with acute lymphoblastic leukemia (the 2-year OS was 49% [95% CI, 43% to 55%], and 49% [95% CI, 41% to 58%], respectively). These data suggest that UCB is a reasonable alternative donor/stem cell source for elderly patients with similar outcomes compared with UBM from 8/8 HLA-matched unrelated donors when the graft containing ≥.84 × 10(5) CD34(+) cells/kg is available.
Assuntos
Transplante de Medula Óssea , Transplante de Células-Tronco de Sangue do Cordão Umbilical , Leucemia Mieloide Aguda , Síndromes Mielodisplásicas , Leucemia-Linfoma Linfoblástico de Células Precursoras , Doadores não Relacionados , Idoso , Aloenxertos , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Leucemia Mieloide Aguda/mortalidade , Leucemia Mieloide Aguda/terapia , Masculino , Pessoa de Meia-Idade , Síndromes Mielodisplásicas/mortalidade , Síndromes Mielodisplásicas/terapia , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidade , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Estudos Retrospectivos , Taxa de SobrevidaRESUMO
BACKGROUND AIMS: Human umbilical cord (UC) has become a notable source for mesenchymal stromal cells (MSCs) that can migrate to areas of inflammation and damaged tissue and can suppress excess immune reactions and to repair, respectively. Although UC is a solid tissue, there are several advantages, including repeatable uses from the same donor sample when needed and the possibility of future explorations for cells with unknown potential, if we could cryopreserve the UC as a living tissue material. However, because the cryoprotectants in the previous reports included animal- or allogeneic human-derived serum or no serum, the frozen-thawed UC-MSCs were inferior to fresh UC-MSCs in cell proliferation. The objective of this study was to find a suitable cryopreservation method of UC for clinical use. METHODS: The UC was cut in cross-section and incised longitudinally, immersed in the cryoprotectant and frozen slowly. Later, it was thawed and minced rapidly, and the fragments of UC were cultured by improved explant method. RESULTS: The highest yield of cells was obtained from frozen-thawed UC with serum- and xeno-free cryoprotectant, STEM-CELLBANKER, when compared with others. The cells derived from frozen-thawed UC stored in STEM-CELLBANKER expressed the phenotypes of MSCs, retained the immunosuppressive properties in allogeneic mixed lymphocyte reactions and the differentiation potentials (into adipocyte and chondrocytes) comparable to those derived from fresh UC. CONCLUSIONS: UC can be cryopreserved in serum- and xeno-free cryoprotectant as a living tissue while keeping its growth and functions equivalent to fresh UC. Our method is simple and feasible for clinical use.