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Molecular Characterization of Strains of Respiratory Syncytial Virus Identified in a Hematopoietic Stem Cell Transplant Outpatient Unit Over 2 Years: Community or Nosocomial Infection?

MACHADO, Adriana F.; SALLUM, Maria Anice M.; BOAS, Lucy S. Vilas; TATENO, Adriona F.; MACHADO, Clarisse M.
Fonte: ELSEVIER SCIENCE INC Publicador: ELSEVIER SCIENCE INC
Tipo: Artigo de Revista Científica
ENG
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Respiratory syncytial virus (RSV) is recognized as the leading cause of nosocomial respiratory infection among hematopoietic stem cell transplant (HSCT) recipients, causing considerable morbidity and mortality. RSV is easily transmitted by contact with contaminated surfaces, and in HSCT units, more than 50% of RSV infections have been characterized as of nosocomial origin. From April 2001 to October 2002, RSV was identified by direct immunofluorescent assay in 42 symptomatic HSCT recipients. Seven RSV strains from 2001 and 12 RSV strains from 2002 were sequenced. RNA extraction, cDNA synthesis, and seminested polymerase chain reaction (PCR) with primers complementary to RSV genes G and F were pet-formed. PCR products were analyzed by nucleotide sequencing of the C-terminal region of gene G for typing (in group A or B). Of the 7 strains analyzed in 2001, only 2 belonged to group B; the other 5 belonged to group A. Of these 7 strains, 3 were identical and were from recipients receiving outpatient care. In 2002, of the 12 strains analyzed, 3 belonged to group A and the other 9 belonged to group B. Of these 9 strains, 7 were genetically identical and were also from recipients receiving outpatient care. Therefore, multiple strains of RSV cocirculated in the hematopoietic stem cell transplant units (ward and outpatient units) between 2001 and 2002. Nosocomial transmission was more likely to occur at the HSCT outpatient unit than in the HSCT ward. Infection control practices should also be implemented in the outpatient setting.; Fapesp[2001/11087-2]; Fapesp[2002 08465-8]; CAPES; Brazilian Ministry of Education

Qualidade de vida e ajustamento psicossocial de pacientes com diabetes mellitus tipo 1 submetidos ao transplante de células-tronco hematopoéticas: um estudo de acompanhamento; Quality of life and psychosocial adjustment of patients with type 1 diabetes mellitus who underwent hematopoietic stem cell transplantation: A follow-up study.

Marques, Letícia Aparecida da Silva
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 01/06/2012 PT
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O transplante de células-tronco hematopoéticas tem surgido como alternativa ao tratamento de doenças autoimunes como artrite reumatóide, lúpus eritematoso sistêmico, esclerose múltipla e diabetes mellitus tipo 1. No diabetes mellitus tipo 1, uma síndrome de etiologia múltipla, o transplante de células-tronco hematopoéticas, na sua modalidade autóloga, tem sido utilizado como alternativa ao tratamento convencional (insulinoterapia), já que este retarda, mas não elimina as consequências da doença como disfunção e falência de vários órgãos, especialmente rins, olhos, nervos, coração e vasos sanguíneos. Apesar disso, o transplante é um procedimento altamente invasivo que acarreta repercussões intensas na qualidade de vida desses pacientes exigindo dos mesmos uma readaptação à essas repercussões. O presente estudo teve por objetivo avaliar a qualidade de vida e o ajustamento psicossocial de participantes com diabetes mellitus tipo 1. Participaram do estudo 22 pacientes que foram submetidos consecutivamente ao transplante de células-tronco hematopoéticas na Unidade de Transplante de Medula Óssea do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, no período de 2006 a 2008. Os instrumentos aplicados para a coleta de dados: Questionário Genérico de Avaliação de Qualidade de Vida Medical Outcomes Study 36 Item Short-Form Health Survey (SF-36)...

Clinical outcome in chronic myeloid leukemia after allogeneic hematopoietic stem cell transplantation: The experience of the Bone Marrow Transplantation Unit of FUNFARME/BRAZIL using FISH

Vendrame-Goloni, C. B.; Carvalho-Salles, A. B.; Ruiz, M. A.; Ricci, O.; Varella-Garcia, M.; Fett-Conte, A. C.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 417-423
ENG
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Investigation of the efficacy of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in chronic myeloid leukemia patients is essential to predict prognosis and survival. In 20 patients treated at the Bone Marrow Transplantation Unit of São José do Rio Preto (São Paulo, Brazil), we used fluorescence in situ hybridization (FISH) to investigate the frequency of cells with BCR/ABL rearrangement at diagnosis and at distinct intervals after allo-HSCT until complete cytogenetic remission (CCR). We investigated the disease-free survival, overall survival in 3 years and transplant-related mortality rates, too. Bone marrow samples were collected at 1, 2, 3, 4, 6, 12, and 24 months after transplantation and additional intervals as necessary. Success rate of the FISH analyses was 100%. CCR was achieved in 75% of the patients, within on average of 3.9 months; 45% patients showed CCR within 60 days after HSCT. After 3 years of the allo-HSCT, overall survival rate was 60%, disease-free survival was 50% and the transplant-related mortality rate was 40%. The study demonstrated that the BCR-ABL FISH assay is useful for follow-up of chronic myeloid leukemia patients after HSCT and that the clinical outcome parameters in our patient cohort were similar to those described for other bone marrow transplantation units. ©FUNPEC-RP.

Oral changes in individuals undergoing hematopoietic stem cell transplantation

Barrach, Regina Haddad; Souza, Mair Pedro de; Silva, Daniela Polo Camargo da; Lopez, Priscila Suman; Montovani, Jair Cortez
Fonte: Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial Publicador: Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial
Tipo: Artigo de Revista Científica Formato: 141-147
ENG
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INTRODUCTION: Patients undergoing hematopoietic stem cell transplantation receive high doses of chemotherapy and radiotherapy, which cause severe immunosuppression. OBJECTIVE: To report an oral disease management protocol before and after hematopoietic stem cell transplantation. METHODS: A prospective study was carried out with 65 patients aged > 18 years, with hematological diseases, who were allocated into two groups: A (allogeneic transplant, 34 patients); B (autologous transplant, 31 patients). A total of three dental status assessments were performed: in the pre-transplantation period (moment 1), one week after stem cell infusion (moment 2), and 100 days after transplantation (moment 3). In each moment, oral changes were assigned scores and classified as mild, moderate, and severe risks. RESULTS: The most frequent pathological conditions were gingivitis, pericoronitis in the third molar region, and ulcers at the third moment assessments. However, at moments 2 and 3, the most common disease was mucositis associated with toxicity from the drugs used in the immunosuppression. CONCLUSION: Mucositis accounted for the increased score and potential risk of clinical complications. Gingivitis, ulcers, and pericoronitis were other changes identified as potential risk factors for clinical complications.; INTRODUÇÃO: Pacientes submetidos a transplante de células hematopoiéticas recebem altas doses de quimioterapia e radioterapia que podem causar imunossupressão e doenças orais graves. OBJETIVO: Apresentar um protocolo de avaliação de doenças orais antes e após transplante de células hematopoiéticas. MÉTODO: Estudo clínico prospectivo de 65 pacientes com idade acima de 18 anos...

Interações medicamentosas potenciais no dia da infusão em pacientes submetidos a transplante de células-tronco hematopoiéticas; Potential drug interactions in the day of infusion in patients submitted to hematopoietic stem cell transplantation

Danilo Donizetti Trevisan
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 08/07/2014 PT
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Introdução: No âmbito do transplante de células-tronco hematopoiéticas - TCTH, as interações medicamentosas potenciais (IMp) podem causar impacto clínico relevante no paciente. Poucos são os estudos para elucidar esse fenômeno nestes pacientes. O enfermeiro, juntamente com sua equipe de enfermagem, são os profissionais mais envolvidos, diretamente, no processo de preparo e administração de medicamentos bem como acompanhamento integral ao paciente, o que justifica a importância da realização de pesquisas sobre o tema. Objetivo: Determinar a prevalência de Interações Medicamentosas Potenciais em pacientes submetidos a transplante de células-tronco hematopoiéticas no dia da infusão das células-tronco hematopoiéticas. Método: Estudo transversal realizado na Unidade de Transplante de Medula Óssea (TMO) do Hospital de Clínicas da Universidade Estadual de Campinas. Prescrições de medicamentos de pacientes submetidos a TCTH (alogênico ou autólogo) com idade igual ou superior a 18 anos foram inclusos neste estudo. Para traçar o perfil terapêutico dos medicamentos utilizou-se a classificação Anatomical Therapeutic Chemical (ATC) da Organização Mundial da Saúde (OMS). As IMp foram analisadas por meio da base de dados Micromedex® 2.0. Para a presente pesquisa foram de interesse as interações entre medicamentos bem como nível de gravidade...

Hematopoietic cell transplant specific comorbidity index (HCT-CI) como ferramenta na avaliação da mortalidade não relacionada a recidiva em pacientes submetidos a transplante de células tronco hematopoiéticas alogênico; Hematopoietic cell transplant specific comorbidity index as a tool in the assessment of non relapse mortality in patients undergoing allogeneic hematopoietic stem cell transplant

Marcos Paulo Colella
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 16/12/2014 PT
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O Transplante de Células Tronco Hematopoiéticas (TCTH) Alogênico representa uma possibilidade de cura para pacientes portadores de doenças hematológicas malignas e benignas. Porém, como qualquer modalidade de tratamento, apresenta efeitos adversos que podem ser graves, inclusive causando a morte. Com o intuito de se avaliar a influência que as comorbidades teriam na mortalidade não relacionada à recidiva (MNRR), foi criada uma ferramenta, o Índice de Comorbidade específico do Transplante de Células Tronco Hematopoiéticas (Hematopoietic Cell Transplant Specific Comorbidity Index - HCT-CI). Nossos objetivos, portanto, foram validar o HCT-CI na população de pacientes submetidos a TCTH Alogênico em nossa instituição, no período de 1993 a 2010, e avaliar outros fatores de riscos envolvidos na MNRR e na Sobrevida Global (SG). Os prontuários de 457 pacientes foram revistos e as informações referentes às comorbidades contidas no HCT-CI foram registradas. A maioria dos pacientes (59%) recebeu o índice 0, seguido de 30% de pacientes com índice de 1-2 e 11% com índice ≥ 3. Na análise univariada, os pacientes com HCT-CI igual a zero, comparados aos com HCT-CI ≥1, apresentaram uma MNRR de 33% vs. 45% (p=0.01) e SG de 53% vs. 35% (p=0.001); nos pacientes que ao transplante apresentavam doença de baixo risco...

The monitoring of hematopoietic stem cell transplant donors and recipients from endemic areas for malaria

Inoue,Juliana; Machado,Clarisse Martins; Lima,Giselle Fernandes Maciel de Castro; Nascimento,Maria de Jesus Costa; Colturato,Vergílio Rensi; Di Santi,Silvia Maria
Fonte: Instituto de Medicina Tropical Publicador: Instituto de Medicina Tropical
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2010 EN
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Malaria is an unusual complication after hematopoietic stem cell transplantation in non-endemic countries. However, transplant candidates, recipients and donors living in endemic regions frequently report previous episodes of malaria. This fact could represent an important risk for immunosuppressed recipients that could develop severe malaria cases. We report a case of hematopoietic stem cell transplant (HSCT) in which the donor had a history of previous malaria, and close monitoring was performed before and after procedure by parasitological and molecular tests. The donor presented Plasmodium vivax in thick blood smears one month after transplant and was treated according to Brazilian Health Ministry guidelines. The polymerase chain reaction (PCR) was able to detect malaria infection in the donor one week earlier than thick blood film. Even without positive results, the recipient was pre-emptively treated with chloroquine in order to prevent the disease. We highlight the importance of monitoring recipients and donors in transplant procedures with the aim of reducing the risk of malaria transmission.

Factors associated with bacteremia due to multidrug-resistant Gram-negative bacilli in hematopoietic stem cell transplant recipients

Garnica,M.; Maiolino,A.; Nucci,M.
Fonte: Associação Brasileira de Divulgação Científica Publicador: Associação Brasileira de Divulgação Científica
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2009 EN
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The epidemiology of bacteremia developing during neutropenia has changed in the past decade, with the re-emergence of Gram-negative (GN) bacteria and the development of multidrug resistance (MDR) among GN bacteria. We conducted a case-control study in order to identify factors associated with bacteremia due to multidrug-resistant Gram-negative (MDRGN) isolates in hematopoietic stem cell transplant recipients. Ten patients with MDRGN bacteremia were compared with 44 patients with GN bacteremia without MDR. Bacteremia due to Burkholderia or Stenotrophomonas sp was excluded from analysis (3 cases), because the possibility of intrinsical resistance. Infection due to MDRGN bacteria occurred in 2.9% of 342 hematopoietic stem cell transplant recipients. Klebsiella pneumoniae was the most frequent MDRGN (4 isolates), followed by Pseudomonas aeruginosa (3 isolates). Among non-MDRGN, P. aeruginosa was the most frequent agent (34%), followed by Escherichia coli (30%). The development of GN bacteremia during the empirical treatment of febrile neutropenia (breakthrough bacteremia) was associated with MDR (P < 0.001, odds ratio = 32, 95% confidence interval = 5_190) by multivariate analysis. Bacteremia due to MDRGN bacteria was associated with a higher death rate by univariate analysis (40 vs 9%; P = 0.03). We were unable to identify risk factors on admission or at the time of the first fever...

Allogeneic hematopoietic stem cell transplantation in mycosis fungoides

Atalla,Angelo; Hallack Neto,Abrahão Elias; Siqueira,Denise Bittencourt; Toledo,Gabriela Cumani
Fonte: Sociedade Brasileira de Dermatologia Publicador: Sociedade Brasileira de Dermatologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2013 EN
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Mycosis Fungoides is typically an indolent disease in early stages. However, approximately 30% of patients have advanced staged disease at presentation and 20% will develop it at some time. These patients have a poorer prognosis with a median survival of 2-4 years. The only curative option for mycosis fungoides may be hematopoietic allogeneic stem cell transplantation. We report the case of a patient with mycosis fungoides in an advanced stage (IIB), refractory to treatment options. She underwent allogeneic hematopoietic stem-cell transplantation (allo-HSCT). The patient remains in complete remission nineteen months after allo-HSCT. Allogeneic transplantation can alter the natural history of mycosis fungoides and should be considered in patients who have refractory disease or short-lived responses with standard therapies.

Importance of killer immunoglobulin-like receptors in allogeneic hematopoietic stem cell transplantation

Franceschi,Danilo Santana Alessio; Souza,Cármino Antonio de; Aranha,Francisco José Penteado; Cardozo,Daniela Maira; Sell,Ana Maria; Visentainer,Jeane Eliete Laguila
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
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Hematopoietic stem cell transplantation is the treatment of choice for many hematologic diseases, such as multiple myeloma, bone marrow aplasia and leukemia. Human leukocyte antigen (HLA) compatibility is an important tool to prevent post-transplant complications such as graft rejection and graft-versus-host disease, but the high rates of relapse limit the survival of transplant patients. Natural Killer cells, a type of lymphocyte that is a key element in the defense against tumor cells, cells infected with viruses and intracellular microbes, have different receptors on their surfaces that regulate their cytotoxicity. Killer immunoglobulin-like receptors are the most important, interacting consistently with human leukocyte antigen class I molecules present in other cells and thus controlling the activation of natural killer cells. Several studies have shown that certain combinations of killer immunoglobulin-like receptors and human leukocyte antigens (in both donors and recipients) can affect the chances of survival of transplant patients, particularly in relation to the graft-versusleukemia effect, which may be associated to decreased relapse rates in certain groups. This review aims to shed light on the mechanisms and effects of killer immunoglobulin-like receptors - human leukocyte antigen associations and their implications following hematopoietic stem cell transplantation...

Quantification of CD8+CD38+ T lymphocytes by flow cytometry does not represent a good biomarker to monitor the reactivation of cytomegalovirus infection after allogeneic hematopoietic stem cell transplantation

Lino,Vânia Abadia Soares; Santos,Silvana Maria Eloi; Bittencourt,Henrique Neves da Silva; Silva,Maria Luiza; Spizziri,Tiago; Bretas,Raquel; Neves,Suzane Pretti Figueiredo
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
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BACKGROUND: Infection/reactivation of cytomegalovirus is a major cause of morbidity and mortality in immunocompromised transplant patients. It has already been observed in kidney and liver transplantation patients that cytomegalovirus disease is accompanied by significant increases in circulating CD8+CD38+ T lymphocytes. There are no reports that study CD8+CD38+ T lymphocytes to monitor/diagnose cytomegalovirus disease in hematopoietic stem cell transplantation patients. OBJECTIVE: The aim of this study was to evaluate some cellular activation markers on circulating mononuclear cells (CD38 and HLA-DR) in patients submitted to hematopoietic stem cell transplantation and to establish any correlation with cytomegalovirus disease as diagnosed by antigenemia. METHODS: Blood samples of 15 transplant patients were analyzed by flow cytometry using anti-CD3, anti-CD4, anti-CD8, anti-CD38, CD16, CD56 and anti-HLA-DR monoclonal antibodies and the results were evaluated in respect to cytomegalovirus antigenemia measured by indirect immunofluorescence. Minitab for Windows was used for statistical analysis and a p-value < 0.05 was considered significant. RESULTS: Patients with positive antigenemia did not show any significant increase in the percentages of cells expressing the CD38 or HLADR activation markers when compared to patients with negative antigenemia. On the contrary...

Functional evaluation indicates physical losses after hematopoietic stem cell transplantation

Souza,Clarissa Vasconcellos de; Miranda,Eliana Cristina Martins; Garcia Jr,Celso; Aranha,Francisco José Penteado; Souza,Cármino Antonio de; Vigorito,Afonso Celso
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 EN
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OBJECTIVE: To perform a function evaluation of patients before and after hematopoietic stem cell transplantation. METHODS: From November 2008 to November 2010, 29 female (58%) and 21 male patients (42%) with median age of 48 years (range: 24-67) were enrolled in this study. Data collection was performed before and after autologous or allogeneic hematopoietic stem cell transplantation. Evaluation instruments included the 2-minute walking test to evaluate gait performance with assessment of the oxygen saturation, heart rate and Borg Scale before and after the test; grip strength for strength evaluation, Schober Test for spine mobility testing and maximum and adapted activity scores of the Human Activity Profile questionnaire to test functionality in daily activities. RESULTS: Fifty patients were evaluated at baseline; six did not undergo hematopoietic stem cell transplantation (three died, one refused and two were excluded). Thus 44/50 (88% - 21 allogeneic and 23 autologous) transplantations were performed. Only 33 of the 44 patients (75%) performed evaluations after transplantation (nine died and two were excluded). Of the patients who performed both evaluations, significantly lower values were found in the evaluation after transplantation for the 2-minute walking test (p-value = 0.004)...

Vitamin D deficiency in children and adolescents submitted to hematopoietic stem cell transplantation

Campos,Denise Johnsson; Biagini,Gleyne Lopes Kujew; Funke,Vaneuza Araujo Moreira; Bonfim,Carmem Maria Sales; Boguszewski,César Luiz; Borba,Victória Zeghbi Cochenski
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2014 EN
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Background: Sub-optimal levels of vitamin D have been found to be highly prevalent in all age groups, with epidemiologic studies demonstrating a link between vitamin D deficiency and disease susceptibility, such as infection and cancer, and mortality rates. In adult transplant patients, it has been suggested that the immunomodulatory properties of vitamin D may have an important role in the prevention and treatment of graft-versus-host disease. Objective: The objective of this study was to assess serum 25-hydroxyvitamin D levels of children and adolescents submitted to allogeneic hematopoietic stem cell transplantation. Methods: Serum 25-hydroxyvitamin D levels of 66 patients, aged 4-20 years, were assessed at three stages: before hospitalization for hematopoietic stem cell transplantation and at 30 and 180 days after hematopoietic stem cell transplantation. The control group consisted of 25 healthy children. Results: At the pre-hematopoietic stem cell transplantation stage, patients had lower levels of 25-hydroxyvitamin D compared to controls (25.7 ± 12.3 ng/mL vs. 31.9 ± 9.9 ng/mL; p-value = 0.01), and a higher prevalence of 25-hydroxyvitamin D deficiency (32% vs. 8%; p-value = 0.01). Prevalence increased significantly after hematopoietic stem cell transplantation (p-value = 0.01) with half of the patients having vitamin D deficiency at 180 days after transplantation. At this stage...

Oral changes in individuals undergoing hematopoietic stem cell transplantation

Barrach,Regina Haddad; Souza,Mair Pedro de; Silva,Daniela Polo Camargo da; Lopez,Priscila Suman; Montovani,Jair Cortez
Fonte: Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial Publicador: Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2015 EN
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INTRODUCTION: Patients undergoing hematopoietic stem cell transplantation receive high doses of chemotherapy and radiotherapy, which cause severe immunosuppression. OBJECTIVE: To report an oral disease management protocol before and after hematopoietic stem cell transplantation. METHODS: A prospective study was carried out with 65 patients aged > 18 years, with hematological diseases, who were allocated into two groups: A (allogeneic transplant, 34 patients); B (autologous transplant, 31 patients). A total of three dental status assessments were performed: in the pre-transplantation period (moment 1), one week after stem cell infusion (moment 2), and 100 days after transplantation (moment 3). In each moment, oral changes were assigned scores and classified as mild, moderate, and severe risks. RESULTS: The most frequent pathological conditions were gingivitis, pericoronitis in the third molar region, and ulcers at the third moment assessments. However, at moments 2 and 3, the most common disease was mucositis associated with toxicity from the drugs used in the immunosuppression. CONCLUSION: Mucositis accounted for the increased score and potential risk of clinical complications. Gingivitis, ulcers, and pericoronitis were other changes identified as potential risk factors for clinical complications.

Regulation of hematopoietic stem cell migration and function

Durand, Ellen Marie
Fonte: Harvard University Publicador: Harvard University
Tipo: Thesis or Dissertation
EN_US
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Hematopoietic stem cell transplantation (HSCT) is an effective treatment for blood disorders and autoimmune diseases. Following HSCT, these cells must successfully migrate to the marrow niche and replenish the blood system of the recipient. This process requires both non-cell and cell-autonomous regulation of hematopoietic stem and progenitor cells (HSPCs). A transgenic reporter line in zebrafish allowed the investigation of factors that regulate HSPC migration and function. To directly observe cells in their endogenous microenvironment, confocal live imaging was used to track runx1:GFP+ HSPCs as they arrive and lodge in the niche. A novel cellular interaction was observed that involves triggered remodeling of perivascular endothelial cells during niche formation. A chemical screen identified the TGF-beta pathway as a regulator of HSPC and niche interactions. Chemical manipulation of HSPCs was used to improve engraftment and repopulation capability following transplantation. Runx1:GFP fish treated with prostaglandin E2 (PGE2) during embryogenesis exhibit increased runx1+ cells in the AGM and CHT, consistent with previous in situ data. This increase in HSPCs is maintained into adulthood, even in the absence of prolonged PGE2 exposure. Kidney marrow from these treated fish can outcompete control marrow in transplantation assays. The ability of PGE2 to confer a long-term advantage on sorted mouse marrow populations in competitive transplantation assays was tested. I found that PGE2-treated short-term (ST)-HSCs...

Técnica de bloqueio no cateter venoso central de longa permanência nos centros de transplante de células-tronco hematopoéticas brasileiros; Lock technique in indwelling long-term central venous catheters in Brazilian hematopoietic stem cell transplantation centers

Moretto, Eluiza Antonieta
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 03/06/2015 PT
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O transplante de células-tronco hematopoéticas é uma modalidade de tratamento baseada na infusão de células-tronco hematopoéticas. Para tanto, o paciente necessita de um cateter venoso central de longa permanência. Espera-se que este cateter permaneça in situ durante o tratamento, porém uma complicação frequente que leva a sua retirada é a ocorrência da infecção relacionada ao cateter. Neste contexto, a técnica de bloqueio/lock terapia pode ser usada na prevenção e controle da infecção relacionada ao cateter intravascular e consiste em manter o cateter sem uso durante um período de tempo com sua via preenchida por algum tipo de solução. No entanto, é uma técnica pouco estudada e com escassos resultados de sua efetividade. O presente estudo teve o objetivo de identificar a forma de utilização da técnica de bloqueio/lock terapia pela equipe de enfermagem nos centros de transplante de células-tronco hematopoéticas brasileiros cadastrados na Sociedade Brasileira de Transplante de Medula Óssea. Trata-se de um estudo descritivo de corte transversal. As variáveis foram analisadas por meio de estatística descritiva. A casuística compôs de 46 centros de transplante de células-tronco hematopoéticas...

Autologous hematopoietic stem cell transplantation in classical Hodgkin's lymphoma

CORTEZ, Afonso José Pereira; DULLEY, Frederico Luiz; SABOYA, Rosaura; MENDRONE JÚNIOR, Alfredo; AMIGO FILHO, Ulisses; CORACIN, Fabio Luiz; BUCCHERI, Valéria; LINARDI, Camila da Cruz Gouveia; RUIZ, Milton Artur; CHAMONE, Dalton de Alencar Fischer
Fonte: Associação Brasileira de Hematologia e Hemoterapia e daSociedade Brasileira de Transplante de Medula Óssea Publicador: Associação Brasileira de Hematologia e Hemoterapia e daSociedade Brasileira de Transplante de Medula Óssea
Tipo: Artigo de Revista Científica
ENG
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BACKGROUND: Hodgkin's lymphoma has high rates of cure, but in 15% to 20% of general patients and between 35% and 40% of those in advanced stages, the disease will progress or will relapse after initial treatment. For this group, hematopoietic stem cell transplantation is considered one option of salvage therapy. OBJECTIVES: To evaluate a group of 106 patients with Hodgkin's lymphoma, who suffered relapse or who were refractory to treatment, submitted to autologous hematopoietic stem cell transplantation in a single transplant center. METHODS: A retrospective study was performed with data collected from patient charts. The analysis involved 106 classical Hodgkin's lymphoma patients who were consecutively submitted to high-dose chemotherapy followed by autologous transplants in a single institution from April 1993 to December 2006. RESULTS: The overall survival rates of this population at five and ten years were 86% and 70%, respectively. The disease-free survival was approximately 60% at five years. Four patients died of procedure-related causes but relapse of classical Hodgkin's lymphoma after transplant was the most frequent cause of death. Univariate analysis shows that sensitivity to pre-transplant treatment and hemoglobin < 10 g/dL at diagnosis had an impact on patient survival. Unlike other studies...

Autologous hematopoietic stem cell transplantation in classical Hodgkin's lymphoma

Cortez,Afonso José Pereira; Dulley,Frederico Luiz; Saboya,Rosaura; Mendrone Júnior,Alfredo; Amigo Filho,Ulisses; Coracin,Fabio Luiz; Buccheri,Valéria; Linardi,Camila da Cruz Gouveia; Ruiz,Milton Artur; Chamone,Dalton de Alencar Fischer
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2011 EN
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BACKGROUND: Hodgkin's lymphoma has high rates of cure, but in 15% to 20% of general patients and between 35% and 40% of those in advanced stages, the disease will progress or will relapse after initial treatment. For this group, hematopoietic stem cell transplantation is considered one option of salvage therapy. OBJECTIVES: To evaluate a group of 106 patients with Hodgkin's lymphoma, who suffered relapse or who were refractory to treatment, submitted to autologous hematopoietic stem cell transplantation in a single transplant center. METHODS: A retrospective study was performed with data collected from patient charts. The analysis involved 106 classical Hodgkin's lymphoma patients who were consecutively submitted to high-dose chemotherapy followed by autologous transplants in a single institution from April 1993 to December 2006. RESULTS: The overall survival rates of this population at five and ten years were 86% and 70%, respectively. The disease-free survival was approximately 60% at five years. Four patients died of procedure-related causes but relapse of classical Hodgkin's lymphoma after transplant was the most frequent cause of death. Univariate analysis shows that sensitivity to pre-transplant treatment and hemoglobin < 10 g/dL at diagnosis had an impact on patient survival. Unlike other studies...

Analysis of the feasibility of early hospital discharge after autologous hematopoietic stem cell transplantation and the implications to nursing care

Barban,Alessandra; Coracin,Fabio Luiz; Musqueira,Priscila Tavares; Barban,Andrea; Ruiz,Lilian Piron; Ruiz,Milton Artur; Saboya,Rosaura; Dulley,Frederico Luiz
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2014 EN
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INTRODUCTION: Autologous hematopoietic stem cell transplantation is a conduct used to treat some hematologic diseases and to consolidate the treatment of others. In the field of nursing, the few published scientific studies on nursing care and early hospital discharge of transplant patients are deficient. Knowledge about the diseases treated using hematopoietic stem cell transplantation, providing guidance to patients and caregivers and patient monitoring are important nursing activities in this process. Guidance may contribute to long-term goals through patients' short-term needs. AIM: To analyze the results of early hospital discharge on the treatment of patients submitted to autologous transplantation and the influence of nursing care on this conduct. METHODS: A retrospective, quantitative, descriptive and transversal study was conducted. The hospital records of 112 consecutive patients submitted to autologous transplantation in the period from January to December 2009 were revisited. Of these, 12 patients, who remained in hospital for more than ten days after transplantation, were excluded from the study. RESULTS: The medical records of 100 patients with a median age of 48.5 years (19-69 years) were analyzed. All patients were mobilized and hematopoietic stem cells were collected by leukapheresis. The most common conditioning regimes were BU12Mel100 and BEAM 400. Toxicity during conditioning was easily managed in the outpatient clinic. Gastrointestinal toxicity...

Brazilian experience using high dose sequential chemotherapy followed by autologous hematopoietic stem cell transplantation for malignant lymphomas

Duarte,Bruno Kosa Lino; Miranda,Eliana Cristina Martins; Nucci,Marcio; Vigorito,Afonso Celso; Penteado,Francisco José; Marques Jr,José Francisco Comenalli; Oliveira-Duarte,Gislaine Borba; Lorand-Metze,Irene Gyongyver Heidemarie; Pagnano,Katia Borgia; De
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2011 EN
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OBJECTIVE: To evaluate the use of high-dose sequential chemotherapy in a Brazilian population. METHODS: High-dose cyclophosphamide followed by autologous hematopoietic stem cell transplantation is an effective and feasible therapy for refractory/relapsed lymphomas; this regimen has never before been evaluated in a Brazilian population. All patients (106 with high-grade non-Hodgkin lymphoma and 77 with Hodgkin's lymphoma) submitted to this treatment between 1998 and 2006 were analyzed. Chemotherapy consisted of the sequential administration of high-dose cyclophosphamide (4 or 7 g/m²) and granulocyte-colony stimulating factor (300 µg/day), followed by peripheral blood progenitor cell harvesting, administration of etoposide (2g/m²) and methotrexate (8 g/m² only for Hodgkin's lymphoma) and autologous hematopoietic stem cell transplantation. RESULTS: At diagnosis, non-Hodgkin lymphoma patients had a median age of 45 (range: 8-65) years old, 78% had diffuse large B-cell lymphoma and 83% had stage III/IV disease. The Hodgkin's lymphoma patients had a median age of 23 (range: 7-68) years old, 64.9% had the nodular sclerosis subtype and 65% had stage III/IV disease. Nine Hodgkin's lymphoma patients (13%) and 10 (9%) non-Hodgkin lymphoma patients had some kind of cardiac toxicity. The overall survival...