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1.
Rev. méd. Panamá ; 39(1): 8-13, 2019.
Article in Spanish | LILACS | ID: biblio-1102154

ABSTRACT

Introducción: El Injerto de células progenitoras hematopoy éticas (ICPH) es actualmente un trata­miento para diferentes desórdenes hematológicos malignos y no malignos. El análisis del quimeris­mo post ICPH, y la cuantificación de cada población celular, deben ser monitoreados. El presente trabajo tiene como objetivo: el evaluar los res ultados de quimerismo completo y mixto en sangre periférica del receptor pos trasplante obtenidos por método cualitativo y cuantitativo del año 2000 al 2018. Material y método: El presente es un estudio descriptivo, observacional, transversal de dos mé­ todos de quimerismo efectuados a receptores y donantes de ICPH alogénico. Resultados: De los 79 pacientes estudiados por el método cualitativo: 65 (82.2%) resultaron con qui­ merismo completo y 14 (17.7%) con quimerismo mixto. No fue posible cuantificar por este método el % de células del donante y del receptor.Conclusión: El método cuantitativo es un método exacto, que determina el % de células del receptor y del donante presentes en la muestra. Con este método se evalúan un mayor número de marcadores genéticos que con el método cualitativo, y se obtienen un mayor número de loci informativos del quimerismo al compararlo con el método cualitativo.


Introduction: Hematopoietic progenitor cell grafting (ICPH) is currently a treatment for different ma­ lignant and non­malignant hematological disorders. The analy sis of post­ICPH chimerism, and the quantification of each cell population, should be monitored. The present work has as objective: to evaluate the results of complete and mixed chimerism in peripheral blood of the post­trans plant reci­pient obtained by qualitative and quantitative method from the year 2000 to 2018. Material and method: The present is a descriptive, observational, cross­sectional study of two met­ hods of chimerism performed on allogeneic ICPH recipients and donors . Results: Of the 79 patients studied by the qualitative method: 65 (82.2%) resulted with complete chi­ merism and 14 (17.7%) with mixed chimerism. It was not possible to quantify by this method the% of donor and recipient cells. Conclusion: The quantitative method is an exact method, which determi­nes the% of recipient and donor cells present in the sample. With this method, a greater number of genetic markers are evaluated than in the qualitative method, and a greater number of information loci of chimerism are obtained than with the qualitative method.


Subject(s)
Humans , Male , Female , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Chimerism/classification , Chimerism/drug effects , Hematologic Diseases
2.
Braz. oral res. (Online) ; 31: e50, 2017. tab, graf
Article in English | LILACS | ID: biblio-952114

ABSTRACT

Abstract The aim of this study is to investigate the relationship between the epidemiological and clinical profiles of patients before and after hematopoietic stem cell transplantation (HSCT) and the need for endodontic treatment. The subjects included 188 individuals enrolled in the dental care program for transplanted patients of the School of Dentistry, Federal University of Minas Gerais (Faculdade de Odontologia da Universidade Federal de Minas Gerais, FO-UFMG) from March 2011 through March 2016. The patients were subjected to an HSCT conditioning dental regimen based on a thorough clinical and radiographic evaluation. Intraoral periapical and bite-wing X-rays were obtained, and after evaluation, specific dental treatment was planned and performed. The following demographic and clinical data were collected from the patients' medical records: age, gender, transplantation stage, primary disease, transplant type, medication used, complete blood count at the time of visit, and need for endodontic treatment. The Kolmogorov-Smirnov and the chi-square tests were used. Leukemia (31.3%) and multiple myeloma (17.9%) were the most prevalent primary diseases. Most patients were subjected to allogeneic-related transplantation (83.6%). Most patients exhibited platelet counts and hemoglobin concentrations below the reference values in the pre-transplantation stage, while the neutrophil and platelet counts and the hemoglobin levels were within the reference ranges in the post-transplantation stage. The proportions of individuals requiring endodontic treatment were similar between the pre- and post-transplantation groups: 24.3% and 24.7%, respectively. The systemic conditions of the patients referred for dental treatment were compromised.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Aged , Young Adult , Root Canal Therapy/statistics & numerical data , Dental Care for Chronically Ill/statistics & numerical data , Hematopoietic Stem Cell Transplantation/adverse effects , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Needs Assessment/statistics & numerical data , Transplantation, Homologous/adverse effects , Transplantation, Homologous/statistics & numerical data , Blood Cell Count , Bone Marrow Diseases/surgery , Bone Marrow Diseases/immunology , Leukemia/surgery , Leukemia/immunology , Risk Factors , Immunosuppression Therapy/adverse effects , Statistics, Nonparametric , Lymphoma/surgery , Lymphoma/immunology , Middle Aged , Multiple Myeloma/surgery , Multiple Myeloma/immunology
3.
Biol. Res ; 45(3): 307-316, 2012. ilus, tab
Article in English | LILACS | ID: lil-659288

ABSTRACT

Hematopoietic stem cell transplantation is the accepted therapy of choice for a variety of malignant and non-malignant diseases in children and adults. Initially developed as rescue therapy for a patient with cancer after high doses of chemotherapy and radiation as well as the correction of severe deficiencies in the hematopoietic system, it has evolved into an adoptive immune therapy for malignancies and autoimmune disorders. The procedure has helped to obtain key information about the bone marrow environment, the biology of hematopoietic stem cells and histocompatibility. The development of this new discipline has allowed numerous groups working around the world to cure patients of diseases previously considered lethal. Together with the ever growing list of volunteer donors and umbilical cord blood banks, this has resulted in life saving therapy for thousands of patients yearly. We present an overview of the procedure from its cradle to the most novel applications, as well as the results of the HSC transplant program developed at our institution since 1989.


Subject(s)
History, 20th Century , History, 21st Century , Humans , Hematopoietic Stem Cell Transplantation , Tissue Donors/statistics & numerical data , Hematopoietic Stem Cell Transplantation/history , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Hematopoietic Stem Cell Transplantation/trends , Transplantation Conditioning , Transplantation, Autologous , Transplantation, Homologous , Tissue Donors/supply & distribution , Tissue and Organ Procurement/statistics & numerical data
4.
Rev. invest. clín ; 57(2): 283-290, mar.-abr. 2005. tab
Article in Spanish | LILACS | ID: lil-632482

ABSTRACT

Myelodisplastic syndromes (MDS) are clonal hematopoietic disorders, characterized by ineffective hemopoiesis resulting in single or multiple lineages and a high risk of conversion to acute leukemia. Currently, the only established therapy with curative potential for MDS is a hemopoietic stem cell transplant (HSCT). Their results are determined by the type of MDS, age at the BMT and the score according to the international index. In the main studies the disease-free survival (DFS) were 35-43%, relapse 20 to 39% and transplantation-related mortality (TRM) 36-45%. HSCT offers best results in goods prognosis MDS (refractory anemia, refractory anemia with ring sideroblasts) with DFS of 53-72% and 13% of relapse, in contrast with the advanced MDS (refractory anemia with blast in excess (AREB), AREB in transformation and secondary acute leukemia) where the DFS is about ~ 33%, the relapse 23-34% and MRT 37-60%. The HSCT from unrelated donor is an option for patients that do not an HLA-matched related donor, with a ~ 30% of DFS, but with a MRT up to 58%. The HSCT with regimens of low intensity (minitransplants) for aged patients are feasible but their efficacy has not yet been determined.


Los síndromes mielodisplásicos (SMD) constituyen un grupo de enfermedades de las células progenitoras hematopoyéticas (CPH) caracterizadas por hematopoyesis ineficaz y una tendencia elevada a evolucionar a leucemia aguda. Hasta el momento actual el único tratamiento curativo lo representa el trasplante de CPH. Los resultados con esta terapia dependen de la variedad del SMD, de la edad de los pacientes al momento del trasplante y del índice pronóstico internacional. Los resultados de las principales series muestran una supervivencia libre de enfermedad (SLE) de 35-43%, con una recaída de 20 a 39% y una mortalidad asociada al trasplante (MRT) de 36 a 45%. Los mejores resultados se obtienen en SMD de buen pronóstico (anemia refractaria/anemia refractaria con sideroblastos en anillo) con SLE de 53-72% y una frecuencia de recaída de 13%, en contraste con los SMD avanzados (anemia refractaria con exceso de blastos ]AREB], AREB en transformación y leucemia aguda secundaria) en los que la SLE es de ~ 33%, la recaída de 23-34% y la MRT de 37-60%. El trasplante de CPH con donador vivo no relacionado es una opción para los pacientes que carecen de un donador familiar, con SLE de ~ 30% pero con una elevada MRT que llega a ser hasta de 58%. Los trasplantes con acondicionamiento de intensidad reducida (minitrasplantes) son factibles de realizar en pacientes de edad avanzada, aunque su eficacia está aún por determinarse.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Hematopoietic Stem Cell Transplantation , Myelodysplastic Syndromes/surgery , Academies and Institutes/statistics & numerical data , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Living Donors , Mexico , Myelodysplastic Syndromes/classification , Myelodysplastic Syndromes/epidemiology , Prognosis , Recurrence , Retrospective Studies , Registries/statistics & numerical data , Survival Rate , Transplantation Conditioning , Treatment Outcome
5.
Rev. invest. clín ; 57(2): 291-297, mar.-abr. 2005. tab
Article in Spanish | LILACS | ID: lil-632483

ABSTRACT

The feasibility of applying allogeneic cell -mediated therapy in conjunction with allogeneic hematopoietic cell transplantation following reduced -intensity conditioning, with minimal toxicity and no serious transplant-related complications, makes it possible to perform such procedures on an outpatient basis as well to offer a valid option for cure to elderly individuals and patients with less than optimal performance status. Based on available experience, clinical application of this innovative therapy may open new horizons for the treatment of patients with leukemia, lymphoma, myeloma and other diseases. Many patients can now benefit from the advantages of immunotherapy mediated by alloreactive donor lymphocytes, while minimizing transplant-related toxicity and mortality. This kind of transplant is making real progress in the world of transplantation.


El trasplante alogénico no mieloablativo basa su efecto en la capacidad de los linfocitos del donador de erradicar a la enfermedad residual del paciente. El empleo de dosis reducidas de intensidad de radioterapia y/o quimioterapia permite su empleo en pacientes de edad avanzada y aún con comorbilidad. La poca toxicidad del procedimiento evita frecuentemente la hospitalización del paciente, se asocia a menor frecuencia de infecciones y de transfusiones, por ello el costo es sensiblemente menor e ideal para países pobres. Se ha utilizado con éxito desde hace ocho años y en nuestro país su aplicación es cada vez más frecuente. La utilidad principal se ha observado en leucemias crónicas y linfomas indolentes. En leucemia aguda mieloblástica en primera remisión también es útil, siendo menos efectivo en la leucemia aguda linfoblástica y los linfomas no-Hodgkin agresivos. También puede ser utilizado en niños y en pacientes con enfermedades benignas. El trasplante no-mieloablativo es una realidad en el área de los trasplantes.


Subject(s)
Adolescent , Adult , Child , Female , Humans , Male , Hematopoietic Stem Cell Transplantation , Transplantation Conditioning/methods , Clinical Trials as Topic , Cord Blood Stem Cell Transplantation , Forecasting , Graft vs Host Disease/immunology , Graft vs Host Disease/prevention & control , Hematologic Diseases/surgery , Hematologic Neoplasms/surgery , Hematopoietic Stem Cell Transplantation/adverse effects , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Mexico , Transplantation Chimera , Transplantation, Homologous , Treatment Outcome , Transplantation Conditioning/mortality , Transplantation Conditioning/statistics & numerical data
6.
Rev. invest. clín ; 57(2): 324-332, mar.-abr. 2005. tab
Article in Spanish | LILACS | ID: lil-632487

ABSTRACT

The congenital immunodeficiency disorders in which the defect has been clearly traced to the stem cell can be cured with allogeneic stem-cell transplantation (SCT) from an unaffected donor. Widespread application of this treatment modality has been tempered by the fact that risk-benefit considerations do not always favor a procedure that carries a significant risk for morbidity and mortality. Some malignant disorders of childhood eventually have to be treated by an autologous or allogeneic SCT, however nonmalignant disorders can also be treated with this approach. This article reviews the current status of SCT for nonmalignant inherited immunodeficiency disorders.


Tradicionalmente el trasplante de células progenituras hematopoyéticas (TCPH) se ha utilizado en pacientes pediátricos para el tratamiento de padecimientos malignos. Sin embargo, también existen indicaciones y experiencia para padecimientos benignos dentro de los cuales se encuentran los síndromes de inmunodeficiencia combinada primaria. Estos síndromes de la infancia constituyen una serie de padecimientos que aun cuando son infrecuentes en la patología infantil constituyen un grupo de alteraciones que hasta hace más de tres décadas eran irremediablemente fatales. Con el advenimiento del TCPH el pronóstico de estos síndromes ha mejorado sustancialmente, por lo que es importante conocer sus resultados, así como su morbimortalidad asociada.


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Male , Hematopoietic Stem Cell Transplantation , Severe Combined Immunodeficiency/surgery , Chorionic Villi Sampling , Cord Blood Stem Cell Transplantation , Fetal Therapies , Fetal Tissue Transplantation , Fetal Diseases/surgery , Histocompatibility , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Liver Transplantation , Lymphocyte Depletion , Neoplasms/surgery , Risk Assessment , Severe Combined Immunodeficiency/classification , Severe Combined Immunodeficiency/diagnosis , Severe Combined Immunodeficiency/embryology , Tissue Donors , Transplantation, Autologous , Transplantation, Homologous , Thymus Gland/transplantation , Wiskott-Aldrich Syndrome/surgery
7.
Rev. bras. hematol. hemoter ; 26(1): 43-45, jan.-mar. 2004.
Article in Portuguese | LILACS | ID: lil-362428

ABSTRACT

Transplantes autólogos de células-tronco hematopoéticas (TACTH) para doenças auto-imunes (DAí) graves e refratárias à terapia convencional têm sido realizados desde 1996, principalmente dirigidos a doenças reumáticas e neurológicas, com resultados encorajadores. De modo geral, dois terços dos pacientes alcançam remissão duradoura da doença auto-imune, embora a morbimortalidade relacionada ao transplante ou à recidiva e progressão da DAI ainda constituam problemas significativos. Baseados nesses resultados e no efeito benéfico da imunossupressão moderada na evolução do diabete melito do tipo I (DM-I), iniciamos, em dezembro de 2003, um protocolo clínico de TACTH para esta doença, em cooperação com a Universidade Northwestern de Chicago, da Universidade de Miami e do National Institutes of Health. Pacientes com DM-I abaixo de 35 anos, diagnosticados há menos de seis semanas ou na fase assintomática ("lua-de-mel") da doença têm suas CTH mobilizadas com ciclofosfamida (2 g/m²) e G-CSF, coletadas do sangue periférico e criopreservadas. Após o condicionamento com ciclofosfamida (200 mg/kg) e globulina antitimocitária de coelho (4,5 mg/kg) e a infusão das CTH autólogas, os pacientes são seguidos por cinco anos em relação aos aspectos clínicos, endocrinológicos e imunológicos do diabete. Este estudo clínico poderá representar uma importante contribuição científica do transplante de medula óssea brasileiro à moderna era de terapia celular de doenças inflamatórias e degenerativas.


Subject(s)
Adult , Humans , Autoimmune Diseases , Diabetes Mellitus, Type 1/drug therapy , Diabetes Mellitus, Type 1/therapy , Transplantation, Autologous , Hematopoietic Stem Cell Transplantation/statistics & numerical data
8.
Bol. méd. Hosp. Infant. Méx ; 56(11): 609-11, nov. 1999. graf
Article in Spanish | LILACS | ID: lil-266513

ABSTRACT

Introducción. El trasplante autólogo de médula ósea es un arma terapéutica útil en diferentes neoplasias hematológicas y tumores sólidos. Se reporta el caso de un paciente sometido a trasplante de células progenitoras hematopoyéticas de sangre periférica (CPSP) realizado en el Hospital Infantil de México Federico Gómez. Caso clínico. Paciente de 3 años de edad con diagnóstico de tumor de Wilms estadio IV inicia, que después de una primera remisión completa, presentó recaída a los 8 meses a pulmón y sistema nervioso central. El paciente recibió tratamiento de rescate con ifosfamida, VP16 y Ara-C, radioterapia a cráneo con 60 cGy y abordaje quirúrgico de 2 lesiones residuales pulmonares. El paciente se consideró en segunda remisión completa y se realizó movilización de CPSP con ciclofosfamida 4 g/m² de superficie corporal (SC) co MESNA 4 g/m² SC y factor estimulante de granulocitos 19 µg/kg de peso corporal. Después de la recolección de CPSP mediante aféresis, se administraron altas dosis de quimioterapia con melfalán 45 mg/m² SC por 4 días, VP16 40 mg/kg una dosis, carboplatino 500 mg/m² SC por tres días, con rescate de células hematopoyéticas. El día 11 post-trasplante el paciente se recuperó en la cuenta de granulocitos y la plaquetaria fue mayor de 30,000/µL el día 34. Conclusión. El trasplante de médula ósea es la mejor alternativa terapéutica en pacientes con recaída de alto riesgo de tumor de Wilms


Subject(s)
Humans , Male , Child, Preschool , Hematopoietic Stem Cell Transplantation , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Wilms Tumor , Treatment Outcome
9.
Actual. pediátr ; 7(1): 14-9, mar. 1997.
Article in Spanish | LILACS | ID: lil-190567

ABSTRACT

El trasplante de médula ósea ha demostrado su eficacia en diferentes patologías inmunológicas y hematopoyéticas. Se ha demostrado que las células de cordón umbilical como fuente de células progenitoras para trasplante alogénico en niños son de gran eficacia con menores complicaciones de tipo reacción de injertocontra huésped y mayores posibilidades para encontrar donantes HLA compatibles. La mayoría de los trasplantes que se han llevado a cabo con células de cordón umbilical han sido con donantes HLA idénticos intrafamiliares, sin embargo, el interés en este procedimiento es su gran potencial como fuente para donantes no relacionados. El uso de células de cordón umbilical implica el desarrollo de bancos de almacenamiento. Esta es una revisión de la experiencia clínica internacional, la composición de las células de cordón, los métodos de recolección y control de calidad.


Subject(s)
Humans , Infant, Newborn , Transplantation, Homologous , Transplantation, Homologous/classification , Transplantation, Homologous/instrumentation , Transplantation, Homologous/statistics & numerical data , Transplantation, Homologous/statistics & numerical data , Hematopoietic Stem Cell Transplantation , Hematopoietic Stem Cell Transplantation/classification , Hematopoietic Stem Cell Transplantation/statistics & numerical data , Hematopoietic Stem Cell Transplantation/trends , Hematopoietic Stem Cell Transplantation/statistics & numerical data
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