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1.
BMC Pregnancy Childbirth ; 19(1): 58, 2019 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-30727996

RESUMO

BACKGROUND: Perinatal mental health problems such as mood disorders are common. We propose a new multidisciplinary health service intervention program providing continuous support to women and their children from the start of pregnancy till after childbirth. The aim of this study was to examine the effects of the program with respect to making women's mental health better in the postpartum period and improving the state of care for women and their children in the perinatal period. METHODS: We performed a controlled study to investigate the effectiveness of the program in Suzaka City, Japan. The women's mental health status was assessed using the Edinburgh Postnatal Depression Scale (EPDS) 3 months postpartum. Of 349 women, 210 were allocated to the intervention group and 139 to the control group. From April 2014 to March 2015, the number of the pregnant women who were followed-up by the multidisciplinary meeting in the intervention and control groups were 60 and 4, respectively. In the same period, the number of the pregnant women who were identified as requiring intensive care were 21 and 2, respectively. RESULTS: The total EPDS score, which was the primary outcome of the present study, differed significantly between the intervention and control groups (Mean [SD] = 2.74 (2.89) and 4.58 [2.62], respectively; p < 0.001). The number of the women receiving counseling from a public health nurse (5.3% in intervention group, 0.7% in control group, p = 0.02), attending maternal seminars (attendant ratio: 46% whereas 16%, p = 0.01), and receiving home visits by public health nurses (home visit ratio: 93.8% whereas 82.6%, p < 0.001) was significantly higher in the intervention group compared to the control group. CONCLUSIONS: The present study indicates that continuum support provided by integrated mental health care through a multidisciplinary maternal and child health service in the community can make women's mental health better in the postpartum period and help women and their children receive more health services from public health nurses. TRIAL REGISTRATION: Name of registry: Research for the effectiveness of a multi-professional health service intervention program of continuum supports for mother and child which starts for pregnancy periods to enhance maternal mental health. UMIN Clinical Trials Registry number: UMIN000032424 . Registration date: April 29th, 2018. Registration timing: retrospective.


Assuntos
Serviços Comunitários de Saúde Mental/métodos , Serviços de Saúde Materno-Infantil , Equipe de Assistência ao Paciente , Cuidado Pós-Natal/métodos , Período Pós-Parto/psicologia , Adulto , Depressão Pós-Parto/prevenção & controle , Depressão Pós-Parto/psicologia , Feminino , Humanos , Recém-Nascido , Japão , Mães/psicologia , Gravidez , Avaliação de Programas e Projetos de Saúde , Escalas de Graduação Psiquiátrica
2.
Pediatr Int ; 61(1): 87-95, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30422368

RESUMO

BACKGROUND: Proton pump inhibitors (PPI) are widely used for the treatment of gastric acid-related disease, but they are not approved for use in children in Japan. To assess the safety, pharmacokinetics, pharmacodynamics, and efficacy (gastrointestinal symptom improvement) of PPI in Japanese pediatric patients with gastric acid-related disease, we conducted an 8 week, open-label, parallel-group, multicenter, phase I/III study of once-daily oral esomeprazole use. METHODS: Japanese children, aged 1-14 years with gastric acid-related disease, were stratified by weight and age into five groups (10 patients/group) to receive esomeprazole as granules for suspension (10 mg) or capsules (10 mg or 20 mg) once daily. RESULTS: Esomeprazole was absorbed and eliminated rapidly in all groups, with a median time to reach maximum plasma concentration of 1.47-1.75 h, an arithmetic mean terminal elimination half-life of 0.80-1.37 h, and a weight-correlated apparent total body clearance of 0.216-0.343 L/h/kg. Area under the plasma concentration-time curve during a dosage interval and maximum plasma drug concentration were generally higher in groups given a higher dose (20 mg) or with a lower age/weight, but also in patients identified as poor metabolizers on cytochrome P450 2C19 genotype. Most patients who had any upper gastrointestinal symptoms at baseline were asymptomatic at the end of the study. Thirty-three patients (66%) reported ≥1 adverse events, including three patients who reported serious adverse events not judged to be causally related to esomeprazole. CONCLUSIONS: Oral esomeprazole, at 10 mg or 20 mg once daily, had a similar safety, efficacy, and pharmacokinetic profile in Japanese pediatric patients to that previously seen in adults and Caucasian children.


Assuntos
Esomeprazol/administração & dosagem , Refluxo Gastroesofágico/tratamento farmacológico , Inibidores da Bomba de Prótons/administração & dosagem , Administração Oral , Adolescente , Criança , Pré-Escolar , Citocromo P-450 CYP2C19/genética , Endoscopia do Sistema Digestório , Esomeprazol/efeitos adversos , Esomeprazol/farmacocinética , Feminino , Ácido Gástrico , Humanos , Concentração de Íons de Hidrogênio/efeitos dos fármacos , Lactente , Japão , Masculino , Inibidores da Bomba de Prótons/efeitos adversos , Inibidores da Bomba de Prótons/farmacocinética
3.
Transpl Int ; 28(5): 565-74, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25644234

RESUMO

Pericardial effusion is a potentially fatal complication following hematopoietic stem cell transplantation (HSCT). Therefore, the identification of risk factors could improve the outcome. Prolonged QT dispersion (QTD) and corrected QTD (QTcD) are associated with serious arrhythmias and sudden death in many forms of heart disease. However, no study has evaluated the efficacy of QTD and QTcD to predict pericardial effusion post-HSCT. We studied 89 pediatric HSCT patients to identify preoperative risk factors for pericardial effusion with particular focus on QTD and QTcD. Pericardial effusion occurred in 15 patients (cumulative onset rate: 17.4%) within one year post-HSCT, of which 8 (9.2%) were symptomatic. Patients with pericardial effusion following allogeneic HSCT showed significantly lower overall survival; however, pericardial effusion was not the direct cause of death in any patient. Univariate and multivariate analyses revealed that transplantation-associated thrombotic microangiopathy (TA-TMA) was an independent risk factor for post-HSCT pericardial effusion. In addition, pretransplant QTcD was significantly prolonged in the pericardial effusion group. These results suggest that pediatric patients with abnormally prolonged QTcD before the preparative regimen for HSCT should be regularly followed-up by echocardiography to detect pericardial effusion, particularly when accompanied by complications including TA-TMA.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Derrame Pericárdico/patologia , Microangiopatias Trombóticas/patologia , Adolescente , Arritmias Cardíacas , Síndrome de Brugada , Doença do Sistema de Condução Cardíaco , Tamponamento Cardíaco , Criança , Pré-Escolar , Ecocardiografia , Feminino , Sistema de Condução Cardíaco/anormalidades , Células-Tronco Hematopoéticas/citologia , Humanos , Masculino , Derrame Pericárdico/complicações , Pericardiocentese , Curva ROC , Estudos Retrospectivos , Fatores de Risco , Microangiopatias Trombóticas/complicações , Resultado do Tratamento
4.
Br J Haematol ; 164(1): 101-12, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24116892

RESUMO

With improvement in survival, it is important to evaluate the impact of treatment on secondary cancers in acute lymphoblastic leukaemia (ALL) survivors. A retrospective cohort study comprising 2918 children diagnosed with ALL and enrolled on Tokyo Children's Cancer Study Group (TCCSG) protocols between 1984 and 2005 was conducted to evaluate the incidence of secondary cancers and associated factors including treatment protocol, cranial irradiation and other characteristics of the primary ALL. Thirty-seven patients developed secondary cancers, including acute myeloid leukaemia (n = 11), myelodysplastic syndrome (n = 5), non-Hodgkin lymphoma (n = 2), brain tumours (n = 13) and other solid carcinomas (n = 6) within a median follow-up duration of 9·5 years. The cumulative incidence of any secondary cancers was 1·0% (95% confidence interval (CI), 0·7-1·4%) at 10 years and 2·4% (95% CI, 1·5-3·7%) at 20 years, respectively. Standardized incidence rate ratio of secondary cancers was 9·3 (95% CI, 6·5-12·8). Multivariate analyses showed an increased risk of secondary cancers associated with the recent treatment protocol and cranial irradiation. There was no evidence of a reduction in secondary cancer incidence despite marked decreases in cranial irradiation use in the recent protocols.


Assuntos
Segunda Neoplasia Primária/epidemiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/epidemiologia , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimiorradioterapia , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Incidência , Lactente , Masculino , Segunda Neoplasia Primária/etiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/radioterapia , Estudos Retrospectivos , Fatores de Risco , Análise de Sobrevida , Tóquio/epidemiologia
5.
Pediatr Int ; 56(3): 354-9, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24417881

RESUMO

BACKGROUND: The pain associated with bone marrow aspiration and biopsy (BMAB) has an enormous impact on pediatric cancer patients and their families, but no specific reference standards for sedation and analgesia have been developed in Japan. To determine the problems associated with pain management during BMAB, a cross-sectional investigation was conducted. METHODS: A survey was sent in October 2011 to data managers in institutions belonging to the Tokyo Children's Cancer Study Group, addressing the non-pharmacological and pharmacological pain management for BMAB performed on pediatric cancer inpatients between January 2010 and December 2010. RESULTS: The eligible response rate was 41 of 57 institutions (71.9%). Non-pharmacological pain intervention was provided in 68% of surveyed institutions. All institutions provided pharmacological pain management. In most institutions, sedation/analgesia was performed by pediatric oncologists in a treatment room in the ward. Standards for pain management were developed and utilized in only four institutions. Other means of pain management were provided in various settings. Twelve institutions reported insufficient sedation/analgesia. In total, 80% of institutions reported some adverse events. Two serious adverse events were reported in cases of underlying or complicated conditions. No serious long-term consequences were reported. CONCLUSIONS: Significant issues were identified regarding the efficacy and safety of pain management. Adverse events can occur in any institution. Children with underlying or complicated conditions are at high risk for serious adverse events. Therefore, adequate and systematic assessment, patient monitoring, preparation and treatment for adverse events, and cooperation with skilled specialists of pediatric oncology, anesthesiology, and intensive care are essential.


Assuntos
Exame de Medula Óssea , Neoplasias/complicações , Manejo da Dor/métodos , Biópsia por Agulha , Pré-Escolar , Estudos Transversais , Humanos
9.
J Pediatr Hematol Oncol ; 31(5): 319-24, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19415009

RESUMO

PURPOSE: Three familial cases of each of severe congenital neutropenia (SCN) and cyclic neutropenia (CN) in addition to 3 sporadic cases of SCN were analyzed for neutrophil elastase (Ela2) gene mutation. The contents of the neutrophil-specific granule proteins cathelicidin antimicrobial peptide and neutrophil gelatinase-associated lipocalin were also analyzed in SCN. METHODS: Genomic DNA was extracted from the patients' peripheral blood or bone marrow, and the coding sequence of the Ela2 gene was amplified by polymerase chain reaction and subjected to direct sequencing. The contents of antimicrobial peptides were analyzed by flow cytometry. RESULTS: Three cases of familial SCN (P13L, R52P, and S97L), 2 of familial CN (W212stop and P110L), and 1 of sporadic SCN (V72M) were shown to have heterozygous mutations in the Ela2 gene. W212stop found in a familial CN case was a novel mutation of Ela2. Prophylactic treatment for growth factors or antibiotic prophylaxis against bacterial infection was useful for lowering the frequency of infectious episodes. Adult patients tended to have less frequent infections compared with minors in the same family. The contents of both cathelicidin antimicrobial peptide and neutrophil gelatinase-associated lipocalin were significantly reduced in SCN compared with healthy controls. CONCLUSIONS: Prophylaxis by growth factor or antibiotics is useful for decreasing risks of bacterial infections in SCN and CN. Adults were likely to have less frequent infections than children in familial cases of SCN and CN with the same mutation of Ela2.


Assuntos
Elastase de Leucócito/genética , Neutropenia/congênito , Neutropenia/genética , Neutrófilos/fisiologia , Mutação Puntual , Adolescente , Adulto , Peptídeos Catiônicos Antimicrobianos/metabolismo , Infecções Bacterianas/epidemiologia , Infecções Bacterianas/genética , Infecções Bacterianas/imunologia , Criança , Pré-Escolar , Saúde da Família , Feminino , Citometria de Fluxo , Predisposição Genética para Doença/epidemiologia , Humanos , Masculino , Neutropenia/epidemiologia , Neutrófilos/citologia , Reação em Cadeia da Polimerase , Fatores de Risco , Adulto Jovem , Catelicidinas
10.
Ann Clin Biochem ; 44(Pt 6): 573-8, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17961316

RESUMO

We previously reported a case of heterozygous beta-thalassaemia with IVS1-1G > C substitution in the beta-globin gene and a non-detectable level of mutant mRNA in the patient's reticulocytes. The purpose of this study was to determine whether the transcription and RNA splicing and processing of the mutant gene occurred. We analysed the expression of the mRNA encoded by the cloned mutant gene in COS-1 cells by reverse transcription-polymerase chain reaction followed by agarose gel electrophoresis and nucleotide sequencing. The G > C mutation completely inactivated the normal 5' splice site and resulted in the activation of two cryptic 5' splice sites, located 16 and 38 nt upstream of the normal site. The usage of these two cryptic sites accords with the findings of reports on IVS1-1G > A or IVS1-1G > C substitution of exon 1 of the beta-globin gene. Additional experiments that involved transfection of equal amounts of both normal and mutant vectors into COS-1 cells indicated the presence of mutant mRNAs. In conclusion, the beta-thalassaemia gene (IVS1-1G > C) was expressed in transfected cells, but showed aberrant RNA splicing. Further studies will be required to clarify the molecular mechanism that results in severe reduction in the mutant mRNA level in vivo.


Assuntos
Processamento Alternativo/genética , Globinas/genética , Polimorfismo de Nucleotídeo Único , Sítios de Splice de RNA/genética , Talassemia beta/genética , Animais , Sequência de Bases , Células COS , Chlorocebus aethiops , Clonagem Molecular , Expressão Gênica/fisiologia , Humanos , RNA Mensageiro/metabolismo , Transfecção
11.
Int J Hematol ; 101(4): 362-8, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25690486

RESUMO

The International Immune Tolerance Induction (I-ITI) Study in hemophilia A patients with inhibitors included 16 Japanese patients among a total of 115 test subjects. The results within this group of Japanese patients were 11 cases of I-ITI off-study, three cases of I-ITI on-study, and two cases of tolerance on prophylaxis. There was no significant difference in success rate between the low-dose and high-dose groups (Study I). Successively, independent follow-up survey in Japan was conducted in 14 cases, with consent (Study II). Ten cases were off-study at the end of the I-ITI Study. Of these 10 cases, seven of seven successful cases remained clinical successes at the end of the follow-up study, one partial success became a full success while a second relapsed, and one failure was subsequently evaluated as a partial success. Four cases that were on-study at the end of I-ITI Study were classified as three successes and one failure at the end of the follow-up study. As a result, the status at the end of follow-up study was: 11 ITI successes (78.6 %); one partial success; one failure; and one relapse. Thus, the ITI follow-up study was helpful in providing a long-term prognostic determination of inhibitors.


Assuntos
Fator VIII/imunologia , Fator VIII/uso terapêutico , Hemofilia A/imunologia , Hemofilia A/terapia , Povo Asiático , Pré-Escolar , Fator VIII/administração & dosagem , Feminino , Seguimentos , Hemofilia A/epidemiologia , Humanos , Tolerância Imunológica , Lactente , Japão/epidemiologia , Masculino , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/imunologia , Proteínas Recombinantes/uso terapêutico
12.
Leuk Lymphoma ; 52(8): 1523-7, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21651434

RESUMO

About 20% of patients with transient leukemia (TL), which is a disease noted in Down syndrome, are reported to develop hepatic fibrosis, which has a poor prognosis. The clinical factors related to the poor prognosis of TL were retrospectively analyzed in 25 patients, and criteria for starting chemotherapy were established. The initiation of chemotherapy was recommended when two or more of the following categories were fulfilled in the process of the disease: (1) a reduced hepatic functional reserve estimated by direct bilirubin, prothrombin time, and the presence of ascites, (2) an elevated level of hyaluronic acid (>500 U/mL), (3) respiratory failure or poor sucking associated with hepatosplenomegaly, and (4) demonstration of fibrosis by liver biopsy. When these criteria were applied to our cases, all patients who received chemotherapy remained alive. Our criteria are useful for selecting patients with TL at high risk of developing hepatic fibrosis and for starting chemotherapy.


Assuntos
Síndrome de Down/complicações , Leucemia/complicações , Hepatopatias/complicações , Citarabina/uso terapêutico , Progressão da Doença , Feminino , Hepatomegalia/complicações , Humanos , Ácido Hialurônico/sangue , Imunossupressores/uso terapêutico , Lactente , Recém-Nascido , Cirrose Hepática/complicações , Hepatopatias/sangue , Hepatopatias/tratamento farmacológico , Masculino , Transtornos Respiratórios/complicações , Estudos Retrospectivos , Fatores de Risco , Esplenomegalia/complicações
13.
Cytometry B Clin Cytom ; 80(1): 8-13, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20632414

RESUMO

BACKGROUND: X-linked lymphoproliferative syndrome (XLP) is a rare immunodeficiency with extreme vulnerability to Epstein-Barr virus (EBV) infection. It presents with fatal infectious mononucleosis, lymphoproliferative disorder, or dysgammaglobulinemia. The majority of affected males have mutations in the SH2D1A/SLAM-associated protein (SAP) gene. We previously generated an antihuman SAP monoclonal antibody (KST-3) for a flow cytometric assay and described the activation of T cells to be necessary for the flow cytometric assessment of the SAP expression using an FITC-conjugated secondary antibody. METHODS: Between 2005 and 2008, we recruited 23 male patients with suspected XLP, including mainly EBV-associated hemophagocytic lymphohistiocytosis (HLH), and attempted to evaluate SAP expression in fresh lymphoid cells using Alexa Fluor 488-conjugated secondary antibody instead of an FITC-conjugated one. RESULTS: The method demonstrated that SAP was intensely expressed in CD8(+) T cells and NK cells in normal fresh blood samples, thus suggesting the possible rapid identification of individuals with SAP deficiency. SH2D1A mutations were identified in six patients with SAP deficiency, but not in patients with normal SAP expression. CONCLUSION: The outcomes from this trial were verified by a flow cytometric assay using KST-3 and Alexa Fluor 488 secondary antibody. Based on the demonstration SAP deficiency in patients with suspected XLP, including mainly EBV-associated HLH, this approach could serve as a method for the early and rapid detection of patients with XLP-1.


Assuntos
Peptídeos e Proteínas de Sinalização Intracelular/genética , Transtornos Linfoproliferativos/diagnóstico , Adolescente , Adulto , Sequência de Bases , Linfócitos T CD8-Positivos/metabolismo , Estudos de Casos e Controles , Criança , Pré-Escolar , Citometria de Fluxo , Mutação da Fase de Leitura , Transplante de Células-Tronco Hematopoéticas , Herpesvirus Humano 4 , Humanos , Lactente , Peptídeos e Proteínas de Sinalização Intracelular/sangue , Linfo-Histiocitose Hemofagocítica/sangue , Linfo-Histiocitose Hemofagocítica/virologia , Transtornos Linfoproliferativos/sangue , Transtornos Linfoproliferativos/terapia , Masculino , Mutação Puntual , Deleção de Sequência , Proteína Associada à Molécula de Sinalização da Ativação Linfocitária , Adulto Jovem
14.
Cancer Genet Cytogenet ; 176(2): 137-43, 2007 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-17656257

RESUMO

We report the case of an infant with acute myeloblastic leukemia who had the abnormal karyotype 46,XX,t(2;11;9)(q31;p15;q22),t(6;11;15)(q21;q23;q22),t(8;10)(q13;q22). At relapse, a different three-way translocation emerged. Fluorescence in situ hybridization and a reverse transcription-polymerase chain reaction assay detected the NUP98-HOXD13 fusion gene in bone marrow cells of the patient at diagnosis and at relapse. Sequence analysis showed that exon 12 of NUP98 was fused in-frame with exon 2 of HOXD13. The patient had neither a rearrangement of the MLL gene nor aberrations for FLT3, KIT, NRAS, KRAS, or PTPN11. The NUP98-HOXD13 fusion transcript created by t(2;11;9)(q31;p15;q22) may play an important role in the leukemogenesis in this case.


Assuntos
Proteínas de Homeodomínio/genética , Leucemia Mieloide Aguda/genética , Complexo de Proteínas Formadoras de Poros Nucleares/genética , Proteínas de Fusão Oncogênica/genética , Translocação Genética , Sequência de Aminoácidos , Sequência de Bases , Cromossomos Humanos Par 10 , Cromossomos Humanos Par 11 , Cromossomos Humanos Par 15 , Cromossomos Humanos Par 2 , Cromossomos Humanos Par 6 , Cromossomos Humanos Par 8 , Cromossomos Humanos Par 9 , Feminino , Humanos , Lactente , Cariotipagem , Dados de Sequência Molecular
15.
Cytokine ; 19(6): 267-75, 2002 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-12421569

RESUMO

Synergism between stem cell factor (SCF) and granulocyte-macrophage colony-stimulating factor (GM-CSF) has been shown to be essential for hematopoietic cell proliferation. Since HML-2 cells proliferate exponentially in the presence of SCF and GM-CSF together, we analyzed the molecular mechanism of the interaction between these two factors in the cells. An immediate-early gene product, c-myc, was additively upregulated in HML-2 cells by addition of a combination of SCF and GM-CSF. c-myc antisense oligonucleotides effectively suppressed cell proliferation and downregulated the induction of D3, E, A, and B cyclins in HML-2 cells stimulated with the two-factor combination. HML-2 cells arrested at the G0/G1 phase with SCF alone and expressed modest amounts of c-myc and cyclin D3, but not cyclin E. With GM-CSF treatment alone, the cells could not progress to the G2/M phase and expressed c-myc, cyclin D3 and cyclin E but not cyclins A or B. The addition of the counterpart cytokine resulted in cell cycle completion by induction of the deficient cyclins. Taken together, it appears that the induction of c-myc is an indispensable event in the proliferation of HML-2 cells and that the cytokines SCF and GM-CSF interact reciprocally for expression of all cyclins required for cell cycle progression.


Assuntos
Ciclinas/biossíntese , Fator Estimulador de Colônias de Granulócitos e Macrófagos/fisiologia , Células-Tronco Hematopoéticas/citologia , Células-Tronco Hematopoéticas/fisiologia , Fator de Células-Tronco/fisiologia , Ciclo Celular/fisiologia , Divisão Celular/fisiologia , Sinergismo Farmacológico , Fase G1/fisiologia , Fase G2/fisiologia , Regulação Neoplásica da Expressão Gênica , Humanos , Proteínas Imediatamente Precoces/biossíntese , Leucemia Megacarioblástica Aguda/metabolismo , Leucemia Megacarioblástica Aguda/patologia , Mitose/fisiologia , Proteínas Proto-Oncogênicas c-fos/biossíntese , Proteínas Proto-Oncogênicas c-jun/biossíntese , Proteínas Proto-Oncogênicas c-myc/biossíntese , Fase S/fisiologia , Células Tumorais Cultivadas
16.
Am J Hematol ; 72(1): 64-6, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12508270

RESUMO

A rare beta-thalassemia mutation at the splicing junction [namely, G-->C in intervening sequence (IVS) I-1] was found in a Japanese family. The proband and his mother were heterozygous for the mutation. Analysis of mRNA extracted from the reticulocyte-rich fraction obtained from the proband's mother revealed that the mutant beta-globin gene did not produce any detectable, stable mRNA including exon 1 and exon 2, since the polymorphism in exon 1 on her mutant gene was not detected in the RT-PCR products.


Assuntos
Globinas/genética , Mutação Puntual , Sítios de Splice de RNA/genética , Talassemia beta/genética , Adulto , Pré-Escolar , Análise Mutacional de DNA , Éxons/genética , Feminino , Humanos , Japão , Masculino , RNA Mensageiro/análise , Reação em Cadeia da Polimerase Via Transcriptase Reversa
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