Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 18 de 18
Filtrar
1.
Artigo em Inglês | MEDLINE | ID: mdl-38744488

RESUMO

Understanding trends in contraceptive stock-outs, as well as their structural and demand-side correlates, is critical for policymakers and program managers to identify strategies to further anticipate, reduce, and prevent stock-outs. We analyzed trends as well as supply- and demand-side correlates of short-acting contraceptive method stock-outs by using data from multiple rounds of Performance Monitoring for Action Agile surveys. These data longitudinally measured contraceptive availability over 2 years (between November 2017 and January 2020) across 2,134 public and private service delivery points (SDPs) from urban areas of 5 countries (Burkina Faso, Democratic Republic of the Congo [DRC], India, Kenya, and Nigeria). For each country, we analyzed the trends and used multilevel mixed-effect logistic regression to model the odds of short-acting contraceptive stock-outs, adjusting for key structural and demand-side factors of the SDPs. Stock-outs in short-acting contraceptive methods were common in health facilities and varied markedly, ranging from as low as 2.9% (95% confidence interval [CI]=1.7%, 5.1%) in India to 51.0% (95% CIs=46.8%, 56.0%) in Kenya. During the observation period, stock-out rates decreased by 28% in the SDP samples in India (aOR=0.72, P<.001) and 8% in Nigeria (aOR=0.92, P<.001) but increased by 15% in DRC (aOR=1.15; P=036) and 5% in Kenya (aOR=1.05, P=003) with each round of data collection. Correlates of stock-out rates included the facility managerial authority (private versus public), whether the facility was rated high quality, whether the facility was at an advanced tier, and whether there was high demand for short-acting contraceptives. In conclusion, stock-outs of short-acting contraceptives are still common in many settings. Measuring and monitoring contraceptive stock-outs is crucial for identifying and addressing issues related to the availability and supply of short-acting contraceptives.

2.
Health Policy Plan ; 36(3): 273-287, 2021 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-33454786

RESUMO

Approximately 214 million women of reproductive age lack adequate access to contraception for their family planning needs, yet patterns of contraceptive availability have seldom been examined. With growing demand for contraceptives in some areas, low contraceptive method availability and stockouts are thought to be major drivers of unmet need among women of reproductive age, though evidence for this is limited. In this research, we examined trends in stockouts, method availability and consumption of specific contraceptive methods in urban areas of four sub-Saharan African countries (Burkina Faso, Democratic Republic of Congo, Kenya and Nigeria) and India. We used representative survey data from the Performance Monitoring for Action Agile Project that were collected in quarterly intervals at service delivery points (SDP) stratified by sector (public vs private), with all countries having five to six quarters of surveys between 2017 and 2019. Among SDPs that offer family planning, we calculated the percentage offering at least one type of modern contraceptive method (MCM) for each country and quarter, and by sector. We examined trends in the percentage of SDPs with stockouts and which currently offer condoms, emergency contraception, oral pills, injectables, intrauterine devices and implants. We also examined trends of client visits for specific methods and the resulting estimated protection from pregnancy by quarter and country. Across all countries, the vast majority of SDPs had at least one type of MCM in-stock during the study period. We find that the frequency of stockouts varies by method and sector and is much more dynamic than previously thought. While the availability and distribution of long-acting reversible contraceptives (LARCs) were limited compared to other methods across countries, LARCs nonetheless consistently accounted for a larger portion of couple years of protection. We discuss findings that show the importance of engaging the private sector towards achieving global and national family planning goals.


Assuntos
Anticoncepção Pós-Coito , Anticoncepção , Burkina Faso , Congo , Comportamento Contraceptivo , Serviços de Planejamento Familiar , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Índia , Quênia , Nigéria , Gravidez
3.
Gates Open Res ; 4: 30, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32908964

RESUMO

The Performance Monitoring and Accountability 2020 (PMA2020) project implemented a multi-country sub-project called PMA Agile, a system of continuous data collection for a probability sample of urban public and private health facilities and their clients that began November 2017 and concluded December 2019.  The objective was to monitor the supply, quality and consumption of family planning services.  In total, across 14 urban settings, nearly 2300 health facilities were surveyed three to six times in two years and a total sample of 48,610 female and male clients of childbearing age were interviewed in Burkina Faso, Democratic Republic of Congo, India, Kenya, Niger and Nigeria.  Consenting female clients with access to a cellphone were re-interviewed by telephone after four months; two rounds of the client exit, and follow-up interviews were conducted in nearly all settings.  This paper reports on the PMA Agile data system protocols, coverage and early experiences.  An online dashboard is publicly accessible, analyses of measured trends are underway, and the data are publicly available.

4.
Bone Marrow Transplant ; 50(5): 619-27, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25665040

RESUMO

Hematopoietic SCT is currently the only curative therapy for a range of benign inherited and acquired primary hematologic disorders in children, including BM failure syndromes and hemoglobinopathies. The preferred HLA-matched sibling donor is available for only about 25% of such children. However, there has been substantial progress over the last four decades in the use of alternative donors for those without a matched sibling-including HLA-matched unrelated donors, HLA-haploidentical related donors and unrelated-donor umbilical cord blood-so that it is now possible to find a donor for almost every child requiring an allograft. Below, we summarize the relative merits and limitations of the different alternative donors for benign hematologic conditions, first generally, and then in relation to specific disorders, and suggest recommendations for selecting such an alternative donor.


Assuntos
Transplante de Células-Tronco de Sangue do Cordão Umbilical , Seleção do Doador/métodos , Doenças Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas , Células-Tronco Hematopoéticas , Doadores não Relacionados , Aloenxertos , Teste de Histocompatibilidade , Humanos
5.
Bone Marrow Transplant ; 49(11): 1376-81, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25068420

RESUMO

Sickle cell anemia (SCA) remains associated with high risks of morbidity and early death. Allogeneic hematopoietic SCT (HSCT) is the only curative treatment for SCA. We report our experience with transplantation in a group of patients with the non-Black African variant and the Black African variant of SCA. This study included 40 consecutive SCA patients (13 patients with the non-Black African variant and 27 with the Black African variant) who underwent BM transplantation from HLA-identical sibling donors between June 2004 and May 2013, following a myeloablative-conditioning regimen. All patients obtained sustained engraftment. One patient (non-Black African variant) became a stable mixed chimera with 25% donor cells more than 6 years after transplantation. The probabilities of survival, SCA-free survival and TRM at 5 years after transplant were 91%, 91% and 9%, respectively. All surviving patients remained free of any SCA-related events after transplantation. Our results confirm that it is possible to offer a greater than 90% chance of cure to children with SCA. HSCT should be considered the standard of care for who have an HLA-identical donor, before complications result from the sickling of RBC.


Assuntos
Anemia Falciforme/terapia , População Negra , Transplante de Células-Tronco Hematopoéticas , Adolescente , Adulto , Aloenxertos , Anemia Falciforme/etnologia , Anemia Falciforme/mortalidade , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Humanos , Lactente , Estudos Retrospectivos , Irmãos , Taxa de Sobrevida
6.
Hosp Top ; 92(1): 1-6, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24621132

RESUMO

The main objective of the study was to assess the level of satisfaction in terms of various quality dimensions among the patients in the study hospital. Data were collected from inpatients through structured questionnaire on eight quality dimensions such as general satisfaction, technical quality, interpersonal manner, communication, financial aspects, time spent with doctors, accessibility and convenience, and hospital services. In total, 100 inpatients were included from three departments with highest patient inflow: medicine, gynecology, and surgery. Most of the respondents were male and belongs to the age group of 31-45 years. Findings depict that highest level of satisfaction was found for interpersonal manner (86.3%) followed by communication (85.4%), general satisfaction (79.3%), and technical quality (77.3%). Least level of satisfaction was found for financial aspects (61.6%), followed by hospital services (68%), accessibility and convenience (73.5%), and time spent with doctor (76.9%).


Assuntos
Hospitais Especializados , Pacientes Internados/psicologia , Satisfação do Paciente , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Índia , Lactente , Masculino , Pessoa de Meia-Idade , Qualidade da Assistência à Saúde , Adulto Jovem
7.
Tissue Antigens ; 79(5): 326-32, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22489942

RESUMO

Polymorphisms in the 3' untranslated region (3'UTR) of HLA-G, an important player in immunological tolerance, could be involved in post-transcriptional expression control, and their association with different clinical immune-related conditions including autoimmunity and transplantation is of mounting interest. Most studies have focused on a 14 base pair (bp) insertion/deletion (ins/del), while additional single-nucleotide polymorphisms (SNPs) in the HLA-G 3'UTR have been described but not extensively investigated for their clinical relevance. Here we have comparatively studied the association between 3'UTR haplotypes of HLA-G, or the 14 bp ins/del, with clinical outcome of HLA-identical sibling hematopoietic stem cell transplantation (HSCT) in 147 Middle Eastern beta-thalassemia patients. Sequence based typing of 3'UTR HLA-G polymorphisms in the patients and in 102 healthy Italian blood donors showed strong linkage disequilibrium between the 14 bp ins/del and five 3'UTR SNPs, which together could be arranged into eight distinct haplotypes based on expectation-maximization studies, with four predominant haplotypes (UTRs1-4). After HSCT, we found a moderate though not significant association between the presence of UTR-2 in double dose and protection from acute graft versus host disease (hazard ratio (HR) 0.45, 95% confidence intervals (CI): 0.14-1.45; P = 0.18), an effect that was also seen when the corresponding 14 bp ins/ins genotype was considered alone (HR 0.42, 95% CI: 0.16-1.06; P = 0.07). No association was found with rejection or survival. Taken together, our data show that there is no apparent added value of considering entire 3'UTR HLA-G haplotypes for risk prediction after allogeneic HSCT for beta-thalassemia.


Assuntos
Regiões 3' não Traduzidas/genética , Doença Enxerto-Hospedeiro/genética , Antígenos HLA-G/genética , Transplante de Células-Tronco Hematopoéticas , Talassemia beta/genética , Regiões 3' não Traduzidas/imunologia , Adolescente , Adulto , Estudos de Casos e Controles , Criança , Pré-Escolar , Feminino , Genótipo , Doença Enxerto-Hospedeiro/diagnóstico , Doença Enxerto-Hospedeiro/imunologia , Haplótipos/genética , Haplótipos/imunologia , Humanos , Tolerância Imunológica , Itália , Desequilíbrio de Ligação , Masculino , Mutagênese Insercional , Polimorfismo Genético , Deleção de Sequência , Irmãos , Transplante Homólogo , Resultado do Tratamento , Talassemia beta/imunologia , Talassemia beta/terapia
8.
Bone Marrow Transplant ; 47(2): 227-30, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21499319

RESUMO

Many patients with thalassemia have been cured with BMT since the first successful transplant in 1981. Allogeneic stem cell gene therapy is the only treatment option for patients with sickle cell anemia (SCA). A total of 11 patients with a median age of 12 years (range, 2-16), affected by SCA, received hematopoietic SCT from HLA-identical, related donors following a myeloablative-conditioning regimen. Indications for transplantation were vaso-occlusive crisis, acute chest syndrome, avascular bone necrosis, chronic RBC transfusions, or hemorrhagic stroke. All patients had sustained engraftment. One patient became a stable mixed chimera with 25% of donor cells at 4 years after transplantation. One patient died at 1 year after transplantation. The probability of survival, SCA-free survival and TRM at 5 years after transplant were 90, 90 and 10%, respectively. All 10 surviving patients remained free of any SCA-related events after transplantation. In conclusion, these data confirm SCT from a suitable HLA-matched, related donor should become the primary option for curing children with SCA. There is an excellent survival rate and a return to normal life, free of SCA-related events.


Assuntos
Anemia Falciforme/terapia , Terapia Genética/métodos , Transplante de Células-Tronco Hematopoéticas/métodos , Adolescente , Anemia Falciforme/genética , Anemia Falciforme/cirurgia , Criança , Pré-Escolar , Feminino , Doença Enxerto-Hospedeiro/etiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Masculino , Estudos Prospectivos , Taxa de Sobrevida , Quimeras de Transplante , Transplante Homólogo
9.
Bone Marrow Transplant ; 47(1): 107-14, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21317935

RESUMO

We evaluated the incidence of GVHD, risk factors and the impact of graft composition on acute GVHD (aGVHD) in 92 children who underwent BMT for thalassemia following busulfan/cyclophosphamide (BUCY)-based conditioning regimens and GVHD prophylaxis with CSA/short-MTX and methylprednisolone. The incidence of grade 2-4 and 3-4 aGVHD was 35% (95% confidence interval (CI) 25-44) and 9% (95% CI 4-16), respectively. We found that CD3(+) and CD34(+) cell doses above the median were associated with high incidence of grade 2-4 aGVHD (49 vs 20%, P=0.005 and 46 vs 23%, P=0.021, respectively). In multivariate analysis, high CD3(+) (hazard ratio (HR) 4.6; 95% CI 1.4-14.7; P=0.010) and CD34(+) (HR 4.3; 95% CI 1.4-12.7; P=0.011) cell doses were associated with grade 2-4 aGVHD. We further examined the effect of CD3(+) and CD34(+) cell doses on aGVHD using quartile cutoff points and found a minimum threshold for CD3(+) (38 × 10(6)/kg) and CD34(+) (4 × 10(6)/kg) cells above which the incidence of grade 2-4 aGVHD is significantly increased. This study shows for the first time a positive correlation between the number of CD3(+) and CD34(+) cells and aGVHD in children receiving sibling BMT, and indicates that using tailored and more intensive post transplant immunosuppression may permit to better control aGVHD.


Assuntos
Antígenos CD34 , Transplante de Medula Óssea , Complexo CD3 , Doença Enxerto-Hospedeiro/epidemiologia , Doença Enxerto-Hospedeiro/prevenção & controle , Talassemia/terapia , Condicionamento Pré-Transplante , Doença Aguda , Adolescente , Anti-Inflamatórios/administração & dosagem , Bussulfano/administração & dosagem , Criança , Pré-Escolar , Ciclofosfamida/administração & dosagem , Feminino , Humanos , Terapia de Imunossupressão/métodos , Imunossupressores/administração & dosagem , Incidência , Lactente , Masculino , Metotrexato/administração & dosagem , Metilprednisolona/administração & dosagem , Agonistas Mieloablativos/administração & dosagem , Irmãos , Transplante Homólogo
10.
Indian J Public Health ; 55(4): 260-6, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22298134

RESUMO

The main objective of the study is to identify the availability of infrastructure facility, human resources, investigative services, and facility based newborn care services with respect to Indian Public Health Standards (IPHS) at community health centers (CHC) of Bharatpur District of Rajasthan State. Data were collected from service providers at CHC through well structured questionnaire at thirteen CHCs situated at Bharatpur District of Rajasthan State. It was found that infrastructure facilities were available in almost all the CHCs, but shortage of manpower especially specialists was observed. Availability of investigative services was found quite satisfactory except ECG. It was also observed that none of the CHCs have fully equipped facility based newborn care services (including newborn corner and newborn care stabilization unit). As per IPHS suggested in the revised draft (2010) important deficiencies were revealed in the studied CHCs of Bharatpur district and by additional inputs such as recruiting staff, improving infrastructure facilities, CHCs can be upgraded.


Assuntos
Serviços de Saúde da Criança/normas , Centros Comunitários de Saúde/normas , Saúde Pública , Pré-Escolar , Humanos , Índia , Recém-Nascido , Estudos de Casos Organizacionais , Inquéritos e Questionários , Recursos Humanos
12.
Bone Marrow Transplant ; 42 Suppl 1: S41, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18724298

RESUMO

SCT still remains the only cure currently available for patients with thalassemia. Results of transplants in this disease have steadily improved over the last two decades due to improvements in preventive strategies, effective control of transplant-related complications and development of new preparative regimens. Currently, high-resolution HLA typing has enabled physicians to perform transplants from unrelated volunteer donors for thalassemia with results comparable with those obtained employing an HLA-identical sibling. The probabilities for obtaining thalassemia-free survival after transplant in thalassemia from an HLA-identical donor, family member or MUD are between 85 and 87%. Therefore, when an HLA-identical donor is present, the transplant of allogeneic stem cell should be performed as allogeneic gene therapy. In the light of advances in transplantation for thalassemia, patients with an HLA-identical donor should be offered SCT.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Talassemia/terapia , Teste de Histocompatibilidade , Humanos
13.
Bone Marrow Transplant ; 42(6): 397-404, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18574445

RESUMO

There is a substantial incidence of graft failure in patients with thalassemia after myeloablative conditioning regimens especially in class 3 patients in whom its incidence could be as high as 8-38.5%. Most patients with graft failure have recurrence of thalassemic marrow. Historically, results of second transplants for thalassemia were poor because of a high rejection rate and/or increased TRM. Sixteen patients with thalassemia recurrence following rejection of the first graft and with a median age of 9 years (range, 4-20) were given second transplants using BM (n=7) or PBSC (n=9) after preparation with a new treatment protocol. All but two patients received stem cells from the same donor. The median interval between two transplants was 28 months (range, 8-204). The sustained engraftment rate was high (94%) with only one patient having primary graft failure. The probability of overall survival, event-free survival, TRM and graft failure were 79, 79, 16 and 6%, respectively. There were three transplant-related deaths. Thirteen patients are alive with Lansky/Karnofsky score of 100. This intensified treatment protocol was well tolerated with no significant increase in toxicity. The excellent results obtained with this new preparative regimen allow us to recommend it for second transplantation for patients with thalassemia recurrence.


Assuntos
Rejeição de Enxerto , Sobrevivência de Enxerto , Talassemia/terapia , Condicionamento Pré-Transplante , Adolescente , Adulto , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Estudos Prospectivos , Recidiva , Irmãos , Taxa de Sobrevida , Talassemia/mortalidade , Fatores de Tempo
14.
Bone Marrow Transplant ; 29(1): 1-8, 2002 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11840137

RESUMO

From April 1981 to February 2000, 105 patients with chronic myeloid leukemia (CML) underwent BMT from HLA-identical related donors at a single center. Eighty-eight patients were in chronic phase (CP), 11 patients in accelerated phase and six patients in blast crisis. Ten of these patients received a second BMT (BMT2). Comparison of BMT in CP with chemotherapy and/or alpha-IFN (n=70) was also made. Patients were given cyclophosphamide (CY) and single-dose TBI (CYTBI, n=38) or busulfan (BU) and CY (BUCY, n=67). Overall 54 patients are alive and 52 of them are disease-free with a median follow-up of 11.3 (range 1.1-19.4) years. Ten-year disease-free survival (DFS) in CP patients was better after BUCY, 61% (95% CI, 47-68%) than after CYTBI, 41% (95% CI, 23-61%) (P=0.07). For 88 patients who received a transplant in CP, results were significantly improved when BMT was performed within 1 year after diagnosis (P=0.02) or at an age < or = 25 years old (P=0.01). Ten-year survival in patients who received BMT in CP was better than in patients treated with chemotherapy (56% vs 10%; P=0.0001) or alpha-IFN-based treatment (33%; P=0.09) with survival curves crossing at 4.2 years and at 4 years, respectively. The probability of DFS after BMT2 was 60% (95% CI, 26-87%). CP patients who received BMT after CYTBI had a higher probability of relapse and transplant-related mortality than patients receiving BUCY (53% and 58% vs 9% and 34%; P=0.002 and P=0.08, respectively). All but six patients are currently on no medication and have resumed all activities without any limitation. These long-term results confirm that allogeneic BMT is the only curative approach for CML patients and should be offered to all patients with a suitable donor as soon after diagnosis as possible.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Transplante de Medula Óssea/métodos , Interferons/administração & dosagem , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/toxicidade , Transplante de Medula Óssea/mortalidade , Transplante de Medula Óssea/normas , Criança , Terapia Combinada/efeitos adversos , Terapia Combinada/mortalidade , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Interferons/toxicidade , Leucemia Mielogênica Crônica BCR-ABL Positiva/induzido quimicamente , Leucemia Mielogênica Crônica BCR-ABL Positiva/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Análise de Sobrevida , Transplante Homólogo/métodos , Transplante Homólogo/mortalidade , Transplante Homólogo/normas , Resultado do Tratamento
15.
Bone Marrow Transplant ; 27(1): 45-51, 2001 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11244437

RESUMO

We analyzed the results of a three or more drug combination as treatment for moderate or severe cGVHD developing after transplantation for thalassemia, in 45 patients with median age of 11 (range 2-26) years. Eighteen patients received a three drug regimen with cyclosporine (CsA), methylprednisolone (MP) and azathioprine (AZ) as first line therapy, 16 patients received this regimen as salvage therapy and 11 patients were given a four or five drug regimen with CsA, MP, AZ, cyclophosphamide (CY) and/or methotrexate (MTX) mainly as salvage therapy. The overall complete response (CR) rate was 77.3%, with 94% of CR in patients receiving the three drug regimen as first line, 88% in patients receiving it as salvage therapy and 36.6% in patients given the four or five drug regimen. The probability of CR in patients given the three drug regimen as first or salvage therapy or the four/five drug regimen was 89%, 53% and 30%, while the probability of survival was 89%, 65% and 58%, respectively. The incidence of treatment failure was low in our patients. Patients treated with the three drug regimen as first line therapy had less treatment-related complications than patients receiving this regimen as salvage therapy or patients given the four or five drug regimen. The main causes of treatment-related mortality (20%) were infectious complications. This retrospective study showed that a three or more drug combination is safe and effective for treatment of moderate or severe cGVHD at least in younger patients.


Assuntos
Quimioterapia Combinada , Doença Enxerto-Hospedeiro/tratamento farmacológico , Imunossupressores/administração & dosagem , Adolescente , Adulto , Transplante de Medula Óssea/efeitos adversos , Transplante de Medula Óssea/mortalidade , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Doença Enxerto-Hospedeiro/mortalidade , Humanos , Imunossupressores/normas , Imunossupressores/toxicidade , Infecções/induzido quimicamente , Masculino , Terapia de Salvação/métodos , Terapia de Salvação/mortalidade , Terapia de Salvação/normas , Talassemia/complicações , Talassemia/terapia , Resultado do Tratamento
16.
Bone Marrow Transplant ; 25(8): 815-21, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10808201

RESUMO

Twenty-nine patients with thalassemia and a median age of 6 years (range 1.1-33 years) were given a BMT from an alternative donor. Six of the 29 donors were HLA-phenotypically identical and two were mismatched relatives, 13 were mismatched siblings and eight were mismatched parents. Six patients received no antigen (relatives), 15 patients one antigen, five patients two antigen and three patients three antigen disparate grafts. Twenty-three patients were in class 2 or class 3, whereas six patients were in class 1. Thirteen patients were given BUCY, nine patients BUCY plus ALG, six patients BUCY plus TBI or TLI and one patient BUCY with prior cytoreductive-immunosuppressive treatment as conditioning. As GVHD prophylaxis four patients received MTX, 22 CsA + MTX + methylprednisolone (MP) and three patients CsA + MP. Thirteen of 29 patients (44.8%) had sustained engraftment. The probability of graft failure or rejection was 55%. There were no significant differences between antigen disparities and graft failure. The incidence of grade II-IV acute GVHD was 47.3% and chronic GVHD was 37.5%. The incidence of acute GVHD was higher in patients receiving one or two antigen disparate in the GVHD direction grafts (vs no antigen) (P EQ 0.04; odds ratio 10.8; 95% CI 1.5-115). The probability of overall and event-free survival was 65% and 21%, respectively, with median follow-up of 7.5 years (range 0.6-17 years) for surviving patients. The degree of HLA disparity between patient and donor did not have a significant effect on survival. The incidence of nonhematologic toxicity was low. Transplant-related mortality was 34%. GVHD (acute or chronic) was a major contributing cause of death (50%) followed by infections (30%). We conclude that at present, due to high graft failure and GVHD rates, BMT from alternative donors should be restricted to patients who have poor life expectancies because they cannot receive adequate conventional treatment or because of alloimmunization to minor blood antigens.


Assuntos
Transplante de Medula Óssea/efeitos adversos , Talassemia/terapia , Doença Aguda , Adolescente , Adulto , Análise de Variância , Incompatibilidade de Grupos Sanguíneos , Transplante de Medula Óssea/mortalidade , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Rejeição de Enxerto/etiologia , Sobrevivência de Enxerto/imunologia , Doença Enxerto-Hospedeiro/etiologia , Antígenos HLA/efeitos adversos , Antígenos HLA/sangue , Antígenos HLA/genética , Hemorragia/etiologia , Histocompatibilidade/imunologia , Humanos , Lactente , Infecções/etiologia , Masculino , Pessoa de Meia-Idade , Mucosa Bucal , Núcleo Familiar , Pais , Fenótipo , Estudos Retrospectivos , Fatores de Risco , Estomatite/etiologia , Sobrevida , Talassemia/complicações , Talassemia/imunologia , Doadores de Tecidos , Condicionamento Pré-Transplante/efeitos adversos , Doenças Vasculares
17.
Bone Marrow Transplant ; 24(12): 1299-306, 1999 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-10627638

RESUMO

Thirty-two thalassemic patients with a median age of 7.7 years (range 3.4-26 years) were given a second HLA-identical related marrow transplant (BMT2) for graft failure. Four patients were in class 1 and 28 patients in classes 2 and 3. Twenty-one patients had full thalassemia recurrence (first group) and 11 patients had aplastic marrows (second group) either with or without residual donor marrow cells after the first BMT (BMT1). As conditioning regimen for BMT2 all but five patients received BUCY or CY in association with total lymphoid irradiation (TLI) and/or anti-lymphocyte globulin (ALG), whereas nine patients received a new preparative regimen with hydroxyurea, azathioprine, fludarabine before conditioning with BUCY. Twenty one of 31 evaluable patients (67.7%) had initial, and 16 (51.6%) had sustained engraftment. Ten patients (32.3%) failed to engraft. Overall and event-free survival for the entire group of patients were 49% and 33%, respectively, with a median follow-up of 4 years (range 0.6-14 years) for surviving patients. Event-free survival was higher in the second group of patients compared with the first group (41% vs 29%). The second group of patients appeared to have less graft failure compared with the first group (30% vs 63%; P = 0.1). Transplant-related mortality was 28%. A linear stepwise regression analysis revealed that occurrence of graft failure within 60 days after BMT1 (P = 0.04) and absence of residual donor marrow cells (P = 0.009) predicted for graft failure following BMT2, whereas the occurrence of graft failure after 60 days (P = 0.03) had a positive influence on survival following BMT2. The incidence of grade >/=2 acute GVHD was low (14%). Eight of nine patients who received the new preparative regimen are alive, four without thalassemia. This study shows that BMT2 can be an effective therapy for a proportion of patients with poor survival expectancies despite conventional treatment.


Assuntos
Transplante de Medula Óssea/efeitos adversos , Sobrevivência de Enxerto/efeitos dos fármacos , Talassemia/terapia , Adolescente , Adulto , Terapia por Quelação/mortalidade , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Doença Enxerto-Hospedeiro , Humanos , Masculino , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida , Quimeras de Transplante , Condicionamento Pré-Transplante , Transplante Autólogo , Resultado do Tratamento
18.
Bone Marrow Transplant ; 22 Suppl 5: S29-32, 1998 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-9989886

RESUMO

The aim of this study was to extend allogeneic hematopoietic stem cell transplantation to leukemia patients without a matched donor. To prevent graft failure, large doses of T cell-depleted hematopoietic stem cells were transplanted following a highly myeloablative and immunosuppressive conditioning regimen. Fifteen children with high-risk acute leukemia received T cell-depleted hematopoietic stem cells from full-haplotype mismatched family members after a conditioning regimen that included single-dose TBI, thiotepa, ATG and fludarabine. To prevent GVHD, marrow cells were T-depleted by soybean agglutinin and E-rosetting, peripheral blood cells by E-rosetting followed by positive selection of the CD34+ cells. No post-transplant prophylaxis for GVHD was administered. In all patients full donor-type engraftment was achieved. None of the evaluable patients developed either acute or chronic GVHD. Regimen-related toxicity was minimal. Five patients are alive and event-free at a median follow-up of 18 months (range 13-28). All surviving patients have a good quality of life. Seven patients have relapsed. This study shows that GVHD and graft failure, which limited the use of full-haplotype mismatched bone marrow transplants, have been overcome. Since almost all children have a mismatched relative, advances in this area should make mismatched transplants a routine consideration for patients with high-risk leukemia without a matched related or unrelated donor.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Leucemia Mieloide Aguda/terapia , Depleção Linfocítica , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Linfócitos T/imunologia , Adolescente , Criança , Pré-Escolar , Feminino , Sobrevivência de Enxerto , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Teste de Histocompatibilidade , Humanos , Leucemia Mieloide Aguda/imunologia , Leucemia Mieloide Aguda/mortalidade , Masculino , Leucemia-Linfoma Linfoblástico de Células Precursoras/imunologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidade , Recidiva , Fatores de Risco , Taxa de Sobrevida , Condicionamento Pré-Transplante/efeitos adversos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...