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1.
Rev. bras. cir. cardiovasc ; 27(4): 542-551, out.-dez. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-668116

ABSTRACT

OBJETIVO: Avaliar o efeito da associação terapêutica entre o transplante autólogo de células-tronco e o exercício físico aquático, sobre a fração de ejeção do ventrículo esquerdo (FEVE) de ratos com disfunção ventricular pós-infarto agudo do miocárdio (IAM). MÉTODOS: Foram induzidos ao IAM, por ligadura da artéria coronária esquerda, 21 ratos Wistar. Os animais foram submetidos à ecocardiografia para avaliação da FEVE (%) e dos volumes diastólico e sistólico finais do ventrículo esquerdo (VDF, VSF, ml), randomizados e ao transplante das células-tronco mononucleares. Os animais foram divididos em quatro grupos: grupo sedentário sem células (n=5), sedentário com células (n=5), treinado sem células (n=5) e treinado com células (n=6). O treinamento físico foi iniciado 30 dias após o IAM e realizado em piscina adaptada durante 30 dias. No início e no final do protocolo de treinamento físico, foram realizadas dosagens de lactato. Os animais foram submetidos a nova ecocardiografia após 60 dias do IAM. RESULTADOS: Comparação dos valores de FEVE 30 dias e 60 dias pós-IAM, respectivamente: sedentário sem (35,20 ± 7,64% vs. 22,39 ± 4,56% P=0,026), com células (25,18 ± 7,73% vs. 23,85 ± 9,51% P=0,860) e no treinado sem (21,49 ± 2,70% vs. 20,71 ± 7,14% P=0,792), treinado com células (28,86 ± 6,68 vs. 38,43 ±7,56% P=0,062). Identificou-se a diminuição de fibras colágenas, nas regiões de fibrose miocárdica no grupo treinado com e sem células. CONCLUSÃO: A associação terapêutica entre exercício físico e o transplante autólogo de células-tronco foi benéfica contra as ações do remodelamento ventricular.


OBJECTIVE: To analyze the functional and anatomical-pathological effect of transplantation of bone marrow mononuclear cells associated to aquatic physical activity after myocardial infarction in rats. METHODS: Twenty-one rats were induced by myocardial infarction, through left coronary artery ligation. After a week, the animals were subjected to echocardiography for evaluation of left ventricle ejection fraction (LVEF, %) and dyastolic and end systolic volume of the left ventricle (EDV, ESV, ml), randomized and the transplantation of mononuclear stem cells. The animals were divided into four groups: sedentary group without cells (n=5), sedentary with cells (n=5), trained without cells (n=5) and trained with cells (n=6). The physical training was started 30 days after infarction and held in swimming during 30 days. At the beginning and at the end of the physical training protocol were held assay of lactate. The animals have been subjected to new echocardiography after 60 days of myocardial infarction. RESULTS: Two months after the transplant, were observed decrease in FE in the control group (35.2 to 23.54 P=0.022) and addition of LVEF and stabilization of ventricular remodeling in the group trained with cells (29.85 to 33.43% P=0.062 and 0.71 to 0.73 ml, P=0.776, respectively). Identified the reduction of collagen fibers, myocardial fibrosis regions in the group trained with and without cells. CONCLUSION: The group trained with cells improves ventricular function compared to the control group, suggesting the benefit of associated cell therapy will physical activity.


Subject(s)
Animals , Male , Rats , Bone Marrow Transplantation/physiology , Monocytes/transplantation , Myocardial Infarction/surgery , Physical Conditioning, Animal/physiology , Ventricular Dysfunction, Left/rehabilitation , Ventricular Remodeling/physiology , Analysis of Variance , Bone Marrow Transplantation/methods , Collagen/metabolism , Disease Models, Animal , Lactic Acid/blood , Myocardial Infarction/rehabilitation , Random Allocation , Rats, Wistar , Swimming/physiology , Transplantation, Autologous , Ventricular Dysfunction, Left/physiopathology , Ventricular Dysfunction, Left
2.
Arq. bras. endocrinol. metab ; 52(2): 407-415, mar. 2008. ilus, graf
Article in English | LILACS | ID: lil-481009

ABSTRACT

Type 1 diabetes mellitus is the result of the autoimmune response against pancreatic beta-cell(s). At the time of clinical diagnosis near 70 percent of beta-cell mass is been destroyed as a consequence of the auto-destruction that begins months or even years before the clinical diagnosis. Although marked reduction of chronic complications was seen after development and progression of insulin therapy over the years for type 1 diabetic population, associated risks of chronic end-organ damage and hypoglycemia still remain. Besides tight glucose control, beta-cell mass preservation and/or increase are known to be other important targets in management of type 1 diabetes as long as it reduces chronic microvascular complications in the eyes, kidneys and nerves. Moreover, the larger the beta-cell mass, the lower the incidence of hypoglycemic events. In this article, we discuss some insights about beta-cell regeneration, the importance of regulation of the autoimmune process and what is being employed in human type 1 diabetes in regard to stem cell repertoire to promote regeneration and/or preservation of beta-cell mass.


O diabetes melito tipo 1 (DM1) é o resultado de uma resposta auto-imune contra as células-beta pancreáticas. Por ocasião do diagnóstico clínico do DM1, aproximadamente 70 por cento da massa de células-beta foram destruídas como conseqüência de uma autodestruição que se iniciou há anos ou meses antes dos primeiros sinais da doença. Embora a redução acentuada das complicações crônicas na população com DM1 foi observada após o desenvolvimento e evolução da insulinoterapia, os riscos associados às lesões dos órgãos-alvo e hipoglicemia persistem. Além do controle intensivo da glicemia, a preservação e/ou o aumento da massa de células-beta são reconhecidos como alvos importantes no tratamento do DM1. Isto vem associado à redução das complicações crônicas microvasculares na retina, rins e nervos e a menor incidência de eventos hipoglicêmicos. Neste artigo, discutimos alguns aspectos da regeneração das células-beta pancreáticas, a importância da regulação do processo auto-imune e o que está sendo empregado no DM1 humano com relação ao repertório das células-tronco nesse sentido.


Subject(s)
Adult , Child , Female , Humans , Male , Diabetes Mellitus, Type 1/surgery , Insulin-Secreting Cells/physiology , Regeneration/physiology , Stem Cell Transplantation/methods , Bone Marrow Transplantation/physiology , Cord Blood Stem Cell Transplantation , Embryonic Stem Cells/transplantation , Hematopoietic Stem Cell Transplantation , Immunosuppression Therapy , Stem Cell Transplantation/trends
3.
Article in English | IMSEAR | ID: sea-20824

ABSTRACT

Cyclosporine (CsA) analysis in blood from patients who had undergone bone marrow transplantation for various haematological disorders was done both by high performance liquid chromatography (HPLC) and enzyme multiplied immunoassay technique (EMIT) and the results were compared. HPLC kit from Biorad Laboratories, USA, and EMIT kit from SYVA, UK, were used. The procedure for EMIT was slightly modified in-house to suit the Hitachi 704 discrete selective analyser. The CsA values obtained by these two methods correlated well within the therapeutic range (r value 0.96), HPLC method being most suitable outside the therapeutic range. Although HPLC is the ideal method for CsA, EMIT is quite suitable and can be adopted by any laboratory with an autoanalyser incorporating our modified procedure.


Subject(s)
Bone Marrow Transplantation/physiology , Chromatography, High Pressure Liquid , Cyclosporine/blood , Enzyme Multiplied Immunoassay Technique , Humans
4.
Cirugía (Bogotá) ; 5(1): 46-9, jun. 1990. tab
Article in Spanish | LILACS | ID: lil-85737

ABSTRACT

El trasplante de medula osea es un tratamiento ampliamente aceptado para las enfermedades congenitas y adquiridas de la medula osea, tumores solidos y alteraciones metabolicas congenitas. Actualmente, mas de 240 grupos de TMO trabajan activamente en el mundo y se estima que cada ano se efectuan alrededor de 5.000 procedimientos tanto en la modalidad alogenica (donante genticamente no identico) como autologa (utilizando la medula del mismo paciente). Los resultados mas satisfactorios se han obtenido en el tratamiento de las leucemias agudas, la leucemia mieloide cronica y la anemia aplastica adquirida severa con sobrevidas libres de enfermdead de 60, 70 y 85%, respectivamente. En nuestro medio el primer TMO se efectuo hace 14 anos, y desde 1986 el grupo de TMO de la Universidad de Antioquia en el Hospital San Vicente de Paul, de Medellin, ha realizado 5 procedimientos en pacientes con Sindrome de Wiskott-Aldrich, purpura amegacariocitica y leucemia mieloide cronica


Subject(s)
Humans , Male , Female , Bone Marrow Transplantation , Anemia, Aplastic/therapy , Bone Marrow Transplantation/immunology , Bone Marrow Transplantation/physiology , Colombia , Leukemia/therapy , Lymphoma/therapy
5.
Acta méd. colomb ; 10(4): 168-171, jul.-ago. 1985. tab, graf
Article in Spanish | LILACS | ID: lil-292747

ABSTRACT

Una paciente con hemoglobinuria paroxística nocturna y aplasia severa de la médula ósea fue tratada con transplante de la médula ósea de su hermana trilliza idéntica. La paciente fue preparada con ciclofosfamida y ha tenido recuperación medular completa y constante. Las pruebas que identifican la hemoglobinuria paroxística nocturna han sido persistentemente negativas. La paciente ha estado clínica y hematológicamente normal durante más de 8 años sin ninguna medicación


Subject(s)
Humans , Female , Adult , Anemia, Aplastic/surgery , Anemia, Aplastic/drug therapy , Anemia, Aplastic/therapy , Hemoglobinuria, Paroxysmal/surgery , Hemoglobinuria, Paroxysmal/drug therapy , Hemoglobinuria, Paroxysmal/therapy , Bone Marrow Transplantation/adverse effects , Bone Marrow Transplantation/physiology , Bone Marrow Transplantation/immunology , Bone Marrow Neoplasms/surgery , Bone Marrow Neoplasms/drug therapy , Bone Marrow Neoplasms/therapy
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