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1.
Curr Cardiol Rep ; 25(6): 443-453, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37119450

RESUMO

PURPOSE OF REVIEW: This review focuses on the efficacy of internet-based psychological interventions for patients with cardiovascular disease (CVD) and comorbid anxiety and depression. Anxiety and depression comprise barriers for treatment adherence and are associated with poorer patient-reported and clinical outcomes, and greater health care costs. RECENT FINDINGS: Internet-based, therapist-assisted interventions targeting anxiety and depression can be as efficacious as face-to-face therapy and may have some advantages, as patients can do it from their own laptop/smartphone at home at a time of their convenience, which may facilitate a better integration in their lives. To enhance the field of internet-based therapy for patients with CVD, we need to involve patients in the development of interventions, focus on developing standards for adherence and assessment of fidelity, and assess and augment health literacy in patients to safeguard equality in health care.


Assuntos
Doenças Cardiovasculares , Terapia Cognitivo-Comportamental , Humanos , Depressão/terapia , Doenças Cardiovasculares/complicações , Doenças Cardiovasculares/terapia , Ansiedade/terapia , Internet , Resultado do Tratamento
2.
Eur J Nucl Med Mol Imaging ; 49(6): 1822-1832, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-34957527

RESUMO

PURPOSE: The fibroblast activation protein (FAP) is an emerging target for molecular imaging and therapy in cancer. OncoFAP is a novel small organic ligand for FAP with very high affinity. In this translational study, we establish [68Ga]Ga-OncoFAP-DOTAGA (68Ga-OncoFAP) radiolabeling, benchmark its properties in preclinical imaging, and evaluate its application in clinical PET scanning. METHODS: 68Ga-OncoFAP was synthesized in a cassette-based fully automated labeling module. Lipophilicity, affinity, and serum stability of 68Ga-OncoFAP were assessed by determining logD7.4, IC50 values, and radiochemical purity. 68Ga-OncoFAP tumor uptake and imaging properties were assessed in preclinical dynamic PET/MRI in murine subcutaneous tumor models. Finally, biodistribution and uptake in a variety of tumor types were analyzed in 12 patients based on individual clinical indications that received 163 ± 50 MBq 68Ga-OncoFAP combined with PET/CT and PET/MRI. RESULTS: 68Ga-OncoFAP radiosynthesis was accomplished with high radiochemical yields. Affinity for FAP, lipophilicity, and stability of 68Ga-OncoFAP measured are ideally suited for PET imaging. PET and gamma counting-based biodistribution demonstrated beneficial tracer kinetics and high uptake in murine FAP-expressing tumor models with high tumor-to-blood ratios of 8.6 ± 5.1 at 1 h and 38.1 ± 33.1 at 3 h p.i. Clinical 68Ga-OncoFAP-PET/CT and PET/MRI demonstrated favorable biodistribution and kinetics with high and reliable uptake in primary cancers (SUVmax 12.3 ± 2.3), lymph nodes (SUVmax 9.7 ± 8.3), and distant metastases (SUVmax up to 20.0). CONCLUSION: Favorable radiochemical properties, rapid clearance from organs and soft tissues, and intense tumor uptake validate 68Ga-OncoFAP as a powerful alternative to currently available FAP tracers.


Assuntos
Radioisótopos de Gálio , Neoplasias , Animais , Fibroblastos/metabolismo , Humanos , Ligantes , Camundongos , Neoplasias/metabolismo , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Compostos Radiofarmacêuticos , Distribuição Tecidual
3.
Eur J Pediatr ; 179(2): 251-256, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31709473

RESUMO

Ataxia telangiectasia (A-T) is a severe neurodegenerative disorder with variable immunodeficiency. Together with the Dutch A-T community, we investigated the opinion of A-T parents on an early A-T diagnosis in the asymptomatic phase of the disease. During an annual national meeting for A-T patients and families, the topic of an early A-T diagnosis was discussed in relation to the recent introduction of neonatal screening for severe combined immunodeficiency (SCID) in the Netherlands. Based on the discussion, individual arguments were identified and processed into a questionnaire, which was sent out to 64 A-T parents (32 families). Arguments included were insecurity to diagnosis, possible medical advantages, appropriate genetic counseling and family planning, loss of "golden" year(s), and early cancer screening for parents. The response rate was 55% (n = 35 parents). Twenty-six (74%) parents felt that the advantages of an early diagnosis outweighed the disadvantages, five parents thought that the disadvantages would outweigh the advantages (14%), and four parents did not indicate a preference.Conclusion: The majority of parents of a child with A-T would have preferred an early diagnosis during the asymptomatic phase of the disease, because the uncertainty during the diagnostic process had had a major impact on their lives. In addition, the knowledge of being carriers of an ATM gene mutation influenced decisions about family planning. Parents who opposed against an early diagnosis emphasized the joy of having a seemingly healthy child until diagnosis.What is Known:• Ataxia telangiectasia (A-T) is a devastating DNA repair disorder with a huge impact on quality of life of patients and their parents.• Patients with A-T may incidentally be identified at birth as the consequence of neonatal screening for severe combined immunodeficiency (SCID).What is New:• The majority of Dutch parents of A-T patients (74%) would have preferred an early diagnosis of their child in the asymptomatic phase of the disease.• Major arguments for an early A-T diagnosis were (1) the experienced insecurity in diagnostic trajectories and its impact on families and (2) the knowledge of being ATM mutation carriers when deciding about family planning. An argument against an early diagnosis is losing the joy of having a seemingly healthy child until diagnosis.


Assuntos
Ataxia Telangiectasia/diagnóstico , Ataxia Telangiectasia/genética , Diagnóstico Precoce , Aconselhamento Genético , Triagem Neonatal/métodos , Inquéritos e Questionários , Adulto , Ataxia Telangiectasia/epidemiologia , Pré-Escolar , Feminino , Predisposição Genética para Doença , Humanos , Incidência , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Relações Pais-Filho , Pais/psicologia , Medição de Risco
4.
Clin Exp Immunol ; 195(2): 202-212, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30307608

RESUMO

Mutations affecting recombination activation genes RAG1 and RAG2 are associated with variable phenotypes, depending on the residual recombinase activity. The aim of this study is to describe a variety of clinical phenotypes in RAG-deficient patients from the highly consanguineous Egyptian population. Thirty-one patients with RAG mutations (from 28 families) were included from 2013 to 2017. On the basis of clinical, immunological and genetic data, patients were subdivided into three groups; classical T- B- severe combined immunodeficiency (SCID), Omenn syndrome (OS) and atypical SCID. Nineteen patients presented with typical T- B- SCID; among these, five patients carried a homozygous RAG2 mutation G35V and five others carried two homozygous RAG2 mutations (T215I and R229Q) that were detected together. Four novel mutations were reported in the T- B- SCID group; three in RAG1 (A565P, N591Pfs*14 and K621E) and one in RAG2 (F29S). Seven patients presented with OS and a novel RAG2 mutation (C419W) was documented in one patient. The atypical SCID group comprised five patients. Two had normal B cell counts; one had a previously undescribed RAG2 mutation (V327D). The other three patients presented with autoimmune cytopaenias and features of combined immunodeficiency and were diagnosed at a relatively late age and with a substantial diagnostic delay; one patient had a novel RAG1 mutation (C335R). PID disorders are frequent among Egyptian children because of the high consanguinity. RAG mutations stand behind several variable phenotypes, including classical SCID, OS, atypical SCID with autoimmunity and T- B+ CID.


Assuntos
Proteínas de Ligação a DNA/genética , Proteínas de Homeodomínio/genética , Proteínas Nucleares/genética , Imunodeficiência Combinada Severa/genética , Imunodeficiência Combinada Severa/patologia , Adolescente , Adulto , Linfócitos B/imunologia , Criança , Consanguinidade , Egito , Feminino , Humanos , Masculino , Técnicas de Diagnóstico Molecular , Linfócitos T/imunologia , Sequenciamento do Exoma , Adulto Jovem
6.
J Tissue Viability ; 26(1): 69-74, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27622272

RESUMO

INTRODUCTION: Little is known about health activation and self-management behavior in preventing pressure ulcers (PU) in paraplegic patients. Therefore this study aimed to describe the extent of health activation and self-management behavior in paraplegics to prevent PU's and associations between this behavior and patient characteristics. Furthermore, we aimed to find differences in health activation in paraplegics who never had a PU compared to paraplegics with a previous history of PU's or a new-onset PU's. METHODS: A cross-sectional survey on health activation and self-management behavior was conducted among adult paraplegics recruited from two rehabilitation centers in the Netherlands. The Patient Activation Measure (PAM-score) was used to measure the extent of health activation. Patient statements on their level of self management behavior to prevent PU were evaluated. RESULTS: The mean PAM-score (0-100) was 54 (±8.1; n = 162) indicating a low level of health activation. Two indicators turned out to be statistically significant associated with health activation: level of education (OR = 2.2, p = 0.017) and degree of paraplegia (OR = 2.8, p = 0.036). Evaluation of health activation levels amongst paraplegics with or without a PU- history showed no significant difference. Analysis of patients statements demonstrated a large discrepancy between intended and actual behavior to prevent pressure ulcers. CONCLUSION: Level of education and level of paraplegia are significantly associated with health activation. A positive PU-history is not associated with future responsible behavior nor for compliant behavior in terms of health management.


Assuntos
Paraplegia/psicologia , Participação do Paciente/psicologia , Úlcera por Pressão/prevenção & controle , Autogestão/psicologia , Adulto , Idoso , Estudos Transversais , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Paraplegia/complicações , Participação do Paciente/estatística & dados numéricos , Úlcera por Pressão/etiologia , Úlcera por Pressão/psicologia , Autorrelato , Higiene da Pele
7.
Clin Exp Immunol ; 178(2): 394-8, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25039369

RESUMO

Somatic hypermutation (SHM) is an important step in antigen-driven B cell development creating B lymphocytes expressing high-affinity antibody receptors. It is known that the peripheral B lymphocyte compartments of healthy children and adults differ considerably. However, the development of SHM with age has not been studied in detail previously. Therefore, we used the immunoglobulin (Ig)κ-restriction enzyme hot-spot mutation assay (Igκ-REHMA) to gain an estimation of SHM levels in different age groups in order to relate this to the size of the memory B lymphocyte subpopulations. We show that the level of SHM increases rapidly during the first 2 years of life. This reflects the changes of the memory B cell subpopulations, but also changes in the SHM within memory B cell subsets, probably reflecting an increase of secondary memory B cell responses.


Assuntos
Subpopulações de Linfócitos B/metabolismo , Rearranjo Gênico do Linfócito B , Receptores de Antígenos de Linfócitos B/genética , Hipermutação Somática de Imunoglobulina , Adolescente , Criança , Pré-Escolar , Imunodeficiência de Variável Comum/genética , Humanos , Lactente , Recém-Nascido
8.
Scand J Immunol ; 80(5): 354-61, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24910257

RESUMO

The patients with CD3γ deficiency can present with different clinical findings despite having the same homozygous mutation. We report three new CD3gamma-deficient siblings from a consanguineous family with a combined T-B+NK+ immunodeficiency and their variable clinical and cellular phenotypes despite the same homozygous mutation of the CD3G gene (c.80-1G>C). We also re-evaluate a previously reported non-consanguineous family with two CD3gamma-deficient siblings with the same mutation. The median age at diagnosis was 11 years (14 months-20 years). We found all five patients to display autoimmunity: autoimmune thyroiditis (n = 5), autoimmune haemolytic anaemia (n = 2), immune thrombocytopenia (n = 1), autoimmune hepatitis (n = 1), minimal change nephrotic syndrome (n = 1), vitiligo (n = 1) and positive antinuclear antibodies (n = 3) as well as high IgE (n = 2) and atopic eczema (n = 2). While CD3(+) TCRαß+T cell percentages were low in all patients, only one had lymphopenia and 3 had CD3(+) T cell lymphopenia. Strikingly, we report frequent and multiple autoimmunity in tested heterozygous carriers in both families (n = 6; in 67%), and frequent autoimmunity in family members not available for testing (n = 5, in 80%). The results suggest that CD3G should be studied as a candidate gene for autoimmunity and that CD3gamma deficiency should be considered among other primary immunodeficiencies with predominantly autoimmune manifestations.


Assuntos
Autoimunidade/genética , Complexo CD3/genética , Estudos de Associação Genética , Predisposição Genética para Doença , Tireoidite Autoimune/genética , Adulto , Anemia Hemolítica Autoimune/genética , Anticorpos Antinucleares/genética , Linfócitos B/imunologia , Criança , Dermatite Atópica/genética , Feminino , Hepatite Autoimune/genética , Humanos , Imunoglobulina E/biossíntese , Imunoglobulina E/genética , Imunoglobulina E/imunologia , Lactente , Células Matadoras Naturais/imunologia , Linfopenia/genética , Linfopenia/imunologia , Masculino , Nefrose Lipoide/genética , Linhagem , Púrpura Trombocitopênica Idiopática/genética , Linfócitos T/imunologia , Vitiligo/genética , Adulto Jovem
9.
Prev Med ; 69: 280-6, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25456812

RESUMO

BACKGROUND: Mammographic screening may reduce breast cancer mortality by about 20%, provided participation is high and women screen regularly. We quantified independent risk factors for failing to rescreen and built a model to predict how rescreening rates change if these risk factors would be modified. METHODS: Multivariate analysis was used to analyze data from a prospective study which included a self-administered questionnaire and rescreening status 30months after a t0 mammogram, using a random sample of women 50-67years (Belgium 2010-2013). RESULTS: A false positive result at the most recent past mammogram (Odds Ratio=5.0, 95% Confidence Interval 3.6-6.8), an interval until new invitation greater than 25months (Odds Ratio=4.8 for >29months, 95% Confidence Interval 2.9-8.1), waiting times in the mammography unit >1h (Odds Ratio=2.1, 95% Confidence Interval 1.2-3.7) and difficulties in reaching the unit (Odds Ratio=2.5, 95% Confidence Interval 1.4-4.4) were the strongest independent predictors for failing to rescreen. The area under the curve of the receiver operating characteristic analysis was 0.705 for the model development stage and 0.717 for the validation stage and goodness-of-fit was good. CONCLUSIONS: Maintaining an invitation cycle of maximum 25months, limiting waiting time in the mammography unit and lowering the number of false positives could increase breast cancer screening compliance.


Assuntos
Mamografia/psicologia , Mamografia/estatística & dados numéricos , Cooperação do Paciente/psicologia , Cooperação do Paciente/estatística & dados numéricos , Idoso , Bélgica , Neoplasias da Mama/diagnóstico , Reações Falso-Positivas , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Curva ROC , Fatores de Risco , Inquéritos e Questionários
10.
Eur J Pediatr ; 173(12): 1695-8, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24723092

RESUMO

UNLABELLED: We present a case of a fatal Epstein-Barr infection in a 17-year-old male patient suspected to be caused by X-linked lymphoproliferative disease. At the time of hospitalization, DNA diagnostics was not available. The suspected diagnosis was confirmed several years later when a SH2D1A missense mutation was identified in stored patient DNA. Extended pedigree analysis showed that this mutation occurred de novo in his mother. In addition, we provide a summary of the currently listed SH2D1A mutations. CONCLUSION: This case report underlines the importance of DNA storage, pedigree analysis, and multidisciplinary care in patients with rare diseases and their families.


Assuntos
DNA/genética , Peptídeos e Proteínas de Sinalização Intracelular/genética , Transtornos Linfoproliferativos/genética , Mutação , Doenças Raras/genética , Adolescente , Adulto , Análise Mutacional de DNA , Diagnóstico Diferencial , Feminino , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Transtornos Linfoproliferativos/diagnóstico , Transtornos Linfoproliferativos/metabolismo , Masculino , Linhagem , Fenótipo , Proteína Associada à Molécula de Sinalização da Ativação Linfocitária
11.
Front Immunol ; 14: 1095123, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37197664

RESUMO

Introduction: Inborn errors of immunity (IEI) are an expanding group of rare diseases whose field has been boosted by next-generation sequencing (NGS), revealing several new entities, accelerating routine diagnoses, expanding the number of atypical presentations and generating uncertainties regarding the pathogenic relevance of several novel variants. Methods: Research laboratories that diagnose and provide support for IEI require accurate, reproducible and sustainable phenotypic, cellular and molecular functional assays to explore the pathogenic consequences of human leukocyte gene variants and contribute to their assessment. We have implemented a set of advanced flow cytometry-based assays to better dissect human B-cell biology in a translational research laboratory. We illustrate the utility of these techniques for the in-depth characterization of a novel (c.1685G>A, p.R562Q) de novo gene variant predicted as probably pathogenic but with no previous insights into the protein and cellular effects, located in the tyrosine kinase domain of the Bruton's tyrosine kinase (BTK) gene, in an apparently healthy 14-year-old male patient referred to our clinic for an incidental finding of low immunoglobulin (Ig) M levels with no history of recurrent infections. Results and discussion: A phenotypic analysis of bone marrow (BM) revealed a slightly high percentage of pre-B-I subset in BM, with no blockage at this stage, as typically observed in classical X-linked agammaglobulinemia (XLA) patients. The phenotypic analysis in peripheral blood also revealed reduced absolute numbers of B cells, all pre-germinal center maturation stages, together with reduced but detectable numbers of different memory and plasma cell isotypes. The R562Q variant allows Btk expression and normal activation of anti-IgM-induced phosphorylation of Y551 but diminished autophosphorylation at Y223 after anti IgM and CXCL12 stimulation. Lastly, we explored the potential impact of the variant protein for downstream Btk signaling in B cells. Within the canonical nuclear factor kappa B (NF-κB) activation pathway, normal IκBα degradation occurs after CD40L stimulation in patient and control cells. In contrast, disturbed IκBα degradation and reduced calcium ion (Ca2+) influx occurs on anti-IgM stimulation in the patient's B cells, suggesting an enzymatic impairment of the mutated tyrosine kinase domain.


Assuntos
Linfócitos B , Proteínas Tirosina Quinases , Masculino , Humanos , Adolescente , Tirosina Quinase da Agamaglobulinemia/genética , Proteínas Tirosina Quinases/genética , Inibidor de NF-kappaB alfa , Citometria de Fluxo
12.
Psychol Med ; 42(1): 51-60, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21682949

RESUMO

BACKGROUND: Depression following myocardial infarction (MI) independently increases risk for early cardiac morbidity and mortality. Studies suggest that somatic, but not cognitive, depressive symptoms are responsible for the increased risk. However, the effects of somatic depressive symptoms at follow-up, after sufficient time has elapsed to allow for physical recovery from the initial infarction, are not known. Our aim was to examine the relationship between cognitive and somatic depressive symptom dimensions at baseline and 12 months post-MI and subsequent mortality and cardiovascular morbidity. METHOD: Patients were 2442 depressed and/or socially isolated men and women with acute MI included in the Enhancing Recovery in Coronary Heart Disease (ENRICHD) clinical trial. We used principal components analysis (PCA) of the Beck Depression Inventory (BDI) items to derive subscales measuring cognitive and somatic depressive symptom dimensions, and Cox regression with Bonferroni correction for multiple testing to examine the contribution of these dimensions to all-cause mortality, cardiovascular mortality, and first recurrent non-fatal MI. RESULTS: After adjusting for medical co-morbidity and Bonferroni correction, the somatic depressive symptom dimension assessed proximately following MI did not significantly predict any endpoints. At 12 months post-MI, however, this dimension independently predicted subsequent all-cause [hazard ratio (HR) 1.43, 95% confidence interval (CI) 1.13-1.81] and cardiovascular mortality (HR 1.60, 95% CI 1.17-2.18). No significant associations were found between the cognitive depressive symptom dimension and any endpoints after Bonferroni correction. CONCLUSIONS: Somatic symptoms of depression at 12 months post-MI in patients at increased psychosocial risk predicted subsequent mortality. Psychosocial interventions aimed at improving cardiac prognosis may be enhanced by targeting somatic depressive symptoms, with particular attention to somatic symptom severity at 12 months post-MI.


Assuntos
Doenças Cardiovasculares/epidemiologia , Transtorno Depressivo/epidemiologia , Infarto do Miocárdio/epidemiologia , Doenças Cardiovasculares/psicologia , Terapia Cognitivo-Comportamental , Comorbidade , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/psicologia , Análise de Componente Principal , Prognóstico , Modelos de Riscos Proporcionais , Escalas de Graduação Psiquiátrica/estatística & dados numéricos , Recidiva , Fatores de Risco , Índice de Gravidade de Doença , Isolamento Social/psicologia , Apoio Social , Fatores de Tempo
14.
Genes Immun ; 12(6): 434-44, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21390052

RESUMO

Artemis deficiency is known to result in classical T-B- severe combined immunodeficiency (SCID) in case of Artemis null mutations, or Omenn's syndrome in case of hypomorphic mutations in the Artemis gene. We describe two unrelated patients with a relatively mild clinical T-B- SCID phenotype, caused by different homozygous Artemis splice-site mutations. The splice-site mutations concern either dysfunction of a 5' splice-site or an intronic point mutation creating a novel 3' splice-site, resulting in mutated Artemis protein with residual activity or low levels of wild type (WT) Artemis transcripts. During the first 10 years of life, the patients suffered from recurrent infections necessitating antibiotic prophylaxis and intravenous immunoglobulins. Both mutations resulted in increased ionizing radiation sensitivity and insufficient variable, diversity and joining (V(D)J) recombination, causing B-lymphopenia and exhaustion of the naive T-cell compartment. The patient with the novel 3' splice-site had progressive granulomatous skin lesions, which disappeared after stem cell transplantation (SCT). We showed that an alternative approach to SCT can, in principle, be used in this case; an antisense oligonucleotide (AON) covering the intronic mutation restored WT Artemis transcript levels and non-homologous end-joining pathway activity in the patient fibroblasts.


Assuntos
Proteínas Nucleares/genética , Oligorribonucleotídeos Antissenso/genética , Sítios de Splice de RNA/genética , Imunodeficiência Combinada Severa/genética , Linfócitos B/imunologia , Linfócitos B/patologia , Sequência de Bases , Células Cultivadas , Criança , Proteínas de Ligação a DNA , Endonucleases , Feminino , Humanos , Mutação , Proteínas Nucleares/deficiência , Tolerância a Radiação/genética , Radiação Ionizante , Análise de Sequência de DNA , Imunodeficiência Combinada Severa/patologia , Linfócitos T/imunologia , Linfócitos T/patologia
15.
Ann Oncol ; 22 Suppl 8: viii33-viii39, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22180397

RESUMO

Several studies in the past have tried to improve the prognosis of ovarian cancer by increasing the dose intensity of platinum. Only 2 out of 12 randomized studies showed survival benefit at the cost of significant long-term toxicity. Dose-dense induction therapy with combined weekly paclitaxel (at a dose of 90 mg/m(2)) and weekly carboplatin [at an area under the curve (AUC) of 4 mg·ml/min] followed by 3-weekly paclitaxel/carboplatin was very effective in platinum-resistant patients (response 58%, progression-free survival 10 months). In first-line, however, no survival benefit was found with the same dose-dense weekly paclitaxel/carboplatin regimen over standard-dosed 3-weekly paclitaxel/carboplatin in a randomized study. Very recently, the Japanese Gynecologic Oncology Group (JGOG) study no. 3016, randomizing patients in first-line between dose-dense weekly paclitaxel 80 mg/m(2) plus 3-weekly carboplatin AUC 6 and 3-weekly paclitaxel/carboplatin, showed a significant increase in progression-free survival (median 28 versus 17.2 months in the control arm; hazard ratio for progression, 0.71; 95% confidence interval, 0.58-0.88; P=0.0015). The 3-year overall survival was 72% versus 65% (P=0.03), respectively. The hematologic toxicity was substantial in both arms and substantially higher than observed with the weekly paclitaxel/carboplatin induction regimen. Many patients had treatment delays, dose reductions and stopped treatment prematurely. The JGOG 3016 study is the only dose-dense study with such a significant survival benefit. It is also the only dose-intensity study performed in Asian patients. Genotypes and phenotypes are thought to represent important determinants of drug efficacy in ovarian cancer. Therefore, confirmatory studies with this JGOG regimen together with translational research are needed in both Caucasian and Asian patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Carcinoma Epitelial do Ovário , Feminino , Humanos
16.
Ann Oncol ; 22(6): 1346-1352, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21228333

RESUMO

BACKGROUND: Because it is insufficiently clear whether BRCA-associated epithelial ovarian cancer (EOC) is more chemosensitive than sporadic EOC, we examined response to chemotherapy, progression-free survival (PFS) and overall survival (OS) in BRCA1- and BRCA2-associated versus sporadic EOC patients. METHODS: Data about patient characteristics, response to and outcome after primary therapy, including chemotherapy, were collected from 99 BRCA1, 13 BRCA2 and 222 sporadic patients. Analyses were carried out using a chi-square test and Kaplan-Meier and Cox regression methods. RESULTS: Complete response (CR) or no evidence of disease (NED) was observed in 87% of the BRCA1 patients, progressive disease (PD) in 2%, being 71% and 15%, respectively, in sporadic EOC patients (P = 0.002). In BRCA2 patients, 92% had CR/NED, and none PD (P = 0.27). Median PFS in BRCA1, BRCA2 and sporadic patients was 2.1 [95% confidence interval (CI) 1.9-2.5] years (P = 0.006), 5.6 (95% CI 0.0-11.5) years (P = 0.008) and 1.3 (95% CI 1.1-1.5) years, respectively. Median OS in the three groups was 5.9 (95% CI 4.7-7.0) years (P < 0.001), >10 years (P = 0.008), and 2.9 (95% CI 2.2-3.5) years, respectively. A trend for a longer PFS and OS in BRCA2 compared with BRCA1 patients was observed. CONCLUSION: Compared with sporadic EOC patients, both BRCA1- and BRCA2-associated patients have improved outcomes after primary therapy, including chemotherapy.


Assuntos
Antineoplásicos/uso terapêutico , Proteína BRCA1/genética , Proteína BRCA2/genética , Neoplasias Ovarianas/tratamento farmacológico , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Intervalo Livre de Doença , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias Ovarianas/genética , Resultado do Tratamento
17.
Scand J Immunol ; 74(5): 502-10, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21815909

RESUMO

Age-matched reference values are generally presented with 5th and 95th percentiles as 'normal' reference range. However, they are mostly determined in relatively small groups, which renders this presentation inaccurate. We determined reference values for B-lymphocyte subpopulations in healthy children with the statistical method of tolerance intervals that deals far better with the relatively small numbers tested, and compared these to the cut-off values used in the currently used EUROclass classification for common variable immunodeficiency disorders (CVID) in children. CVID is a heterogeneous group of primary immunodeficiency diseases characterized by low serum immunoglobulin levels and inadequate response to vaccination. Disease-modifying heterozygous amino acid substitutions in TACI are found in around ±10% of CVID patients. Interestingly, we found that age is the primary determinant of TACI-expression on B-lymphocytes, independent of switched memory B-lymphocyte numbers. Immunophenotyping of B-lymphocyte subpopulations is increasingly used to classify patients with CVID into subgroups with different clinical prognosis according to the composition of their B-lymphocyte compartment. These classifications were mainly developed with data obtained in adults. Because of the maturing paediatric immune system, they may not be equally applicable in children: our and other age-matched reference values show great changes in the composition of the B-lymphocyte compartment during development. Although the greatest changes in B-lymphocyte subpopulations occur below the age of 2 years, when the diagnosis of CVID cannot yet be made, it is likely that a classification developed in adults cannot be used to classify the prognosis of children.


Assuntos
Fatores Etários , Linfócitos B/metabolismo , Imunodeficiência de Variável Comum/diagnóstico , Imunodeficiência de Variável Comum/imunologia , Subpopulações de Linfócitos/metabolismo , Adolescente , Linfócitos B/imunologia , Linfócitos B/patologia , Bioestatística/métodos , Criança , Pré-Escolar , Imunodeficiência de Variável Comum/classificação , Imunodeficiência de Variável Comum/epidemiologia , Europa (Continente) , Regulação da Expressão Gênica no Desenvolvimento/imunologia , Humanos , Imunofenotipagem , Lactente , Recém-Nascido , Subpopulações de Linfócitos/imunologia , Subpopulações de Linfócitos/patologia , Guias de Prática Clínica como Assunto , Prognóstico , Padrões de Referência , Proteína Transmembrana Ativadora e Interagente do CAML/genética , Proteína Transmembrana Ativadora e Interagente do CAML/imunologia , Proteína Transmembrana Ativadora e Interagente do CAML/metabolismo
18.
Eur J Med Genet ; 64(10): 104293, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34352413

RESUMO

Bloom Syndrome (BS) is a genetic DNA repair disorder, caused by mutations in the BLM gene. The clinical phenotype includes growth retardation, immunodeficiency and a strong predisposition to different types of malignancies. Treatment of malignancies in BS patients with radiotherapy or chemotherapy is believed to be associated with increased toxicity, but clinical and laboratory data are lacking. We collected clinical data of two Dutch BS patients with solid tumors. Both were treated with radiotherapy before the diagnosis BS was made and tolerated this treatment well. In addition, we collected fibroblasts from BS patients to perform in vitro clonogenic survival assays to determine radiosensitivity. BS fibroblasts showed less radiosensitivity than the severely radiosensitive Artemis fibroblasts. Moreover, studies of double strand break kinetics by counting 53BP1 foci after irradiation showed similar patterns compared to healthy controls. In combination, the clinical cases and laboratory experiments are valuable information in the discussion whether radiotherapy is absolutely contraindicated in BS, which is the Case in other DNA repair syndromes like Ataxia Telangiectasia and Artemis.


Assuntos
Síndrome de Bloom/complicações , Carcinoma/radioterapia , Radioterapia/efeitos adversos , Adulto , Síndrome de Bloom/genética , Carcinoma/complicações , Células Cultivadas , Quebras de DNA de Cadeia Dupla , Reparo do DNA , Feminino , Fibroblastos/efeitos da radiação , Humanos , Masculino , Pessoa de Meia-Idade , Tolerância a Radiação , RecQ Helicases/genética
19.
Genes Immun ; 11(7): 523-30, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20445561

RESUMO

Homozygous CD19 mutations lead to an antibody deficiency due to disruption of the CD19 complex and consequent impaired signaling by the B-cell antigen receptor. We studied the effects of heterozygous CD19 mutations on peripheral B-cell development and antibody responses in a large family with multiple consanguineous marriages. Sequence analysis of 96 family members revealed 30 carriers of the CD19 mutation. Lymphocyte subset counts were not significantly different between carriers and noncarriers in three different age groups (0-10 years; 11-18 years; adults). B cells of carriers had reduced CD19 and CD21 median expression levels, and had reduced proportions of transitional (0-10 years) and CD5(+) B cells (adults). CD19 carriers did not show clinical signs of immunodeficiency; they were well capable to produce normal serum Ig levels and had normal responses to primary and booster vaccinations. The frequency of mutated Vκ alleles was not affected. Heterozygous loss of CD19 causes some changes in the naive B-cell compartment, but overall in vivo B-cell maturation or humoral immunity is not affected. Many antibody deficiencies are not monogenetic, but likely caused by a combination of multiple genetic variations. Therefore, functional analyses of immune cell function should be carried out to show whether heterozygous mutations contribute to disease.


Assuntos
Formação de Anticorpos/genética , Antígenos CD19/genética , Mutação , Adulto , Formação de Anticorpos/imunologia , Sequência de Bases , Diferenciação Celular/genética , Diferenciação Celular/imunologia , Criança , Estudos de Coortes , Consanguinidade , Feminino , Heterozigoto , Humanos , Imunoglobulinas/genética , Imunoglobulinas/imunologia , Imunoglobulinas/metabolismo , Síndromes de Imunodeficiência/genética , Síndromes de Imunodeficiência/imunologia , Síndromes de Imunodeficiência/metabolismo , Masculino , Linhagem , Receptores de Antígenos de Linfócitos B/genética , Receptores de Antígenos de Linfócitos B/imunologia , Receptores de Antígenos de Linfócitos B/metabolismo , Transdução de Sinais/genética , Transdução de Sinais/imunologia
20.
J Emerg Trauma Shock ; 13(1): 68-72, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32395054

RESUMO

BACKGROUND: Anterior shoulder dislocations (ASDs) are frequent painful injuries commonly treated in the emergency department. The last decade new potentially less traumatic and painful reduction techniques for ASDs have been introduced. Recent literature comparing best reduction techniques, medication use, and approaches is limited. To better guide future research including the use of these newer techniques, information about the current use of different reduction techniques and medication is needed. METHODS: Our primary aim was to survey the techniques used by emergency practitioners to reduce ASDs. Our secondary objective was to gather data on medication usage during reduction. To these ends, we surveyed members of the Netherlands Society of Emergency Physicians. RESULTS: Forty-four percent of respondents reported using a traction-based technique (Hippocrates or Stimson). Biomechanical techniques were used by 40% of respondents. Twelve percent reported using the Kocher leverage-based technique. Five percent of the techniques used could not be classified. A wide variety of procedural sedation and pain management interventions were reported, with an opioid and propofol being used most commonly. Approximately 9% of the reductions were attempted without any medications. CONCLUSIONS: To our knowledge, this is the first study of its kind on ASD management by emergency practitioners. Our results indicate that Dutch emergency practitioners employ all three classes of reduction techniques: traction-countertraction most commonly, closely followed by biomechanical techniques. Medication use during repositioning varied widely. Per our survey, emergency practitioners are desirous of an evidence-based guideline for ASD management.

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