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1.
Prog Transplant ; 32(2): 129-137, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35361008

RESUMO

INTRODUCTION: In heart transplant recipients, nonadherence is associated with higher risk of morbidity and mortality. RESEARCH QUESTION: Can a psychoeducational intervention enhance adherence to medical recommendations? DESIGN: We randomized 200 patients awaiting heart transplantation on the high urgency wait list to a manualized psychoeducational intervention or standard care. Follow-up continued to three years after transplantation. Primary endpoint was adherence to immunosuppressive medication, assessed at 3, 6, 12, 24, and 36 months posttransplant. Secondary endpoints were barriers to adherence during follow-up and clinical outcomes, including cardiac rejection within the first postoperative year and postoperative 3-year mortality. RESULTS: Fifty patients died before or within the first 3 months of transplantation. The primary endpoint was analyzed in 66 patients in the intervention group and 66 in the control group. Both study groups showed almost maximal adherence to immunosuppressive medication throughout follow-up, with no significant time x treatment interaction (P>0.99). Likewise, there was no significant time x treatment interaction (P=0.41) on barriers to adherence. The percentage of patients with International Society for Heart and Lung Transplantation standard grade 1 and 2 rejection was in the intervention and control groups 82.5% and 78.7%, respectively, and 8.8% and 13.1%, respectively, without significant differences between study groups (P=0.75). Considering all randomized and transplanted patients in the intervention group (N=85) and control group (N=87), postoperative 3-year mortality was 29.4% and 27.6%, respectively (P=0.82). CONCLUSIONS: Adherence to immunosuppressive medication was high, even without a complex, manualized psychoeducational intervention. The intervention had no significant positive impact on cardiac rejection and mortality.


Assuntos
Transplante de Coração , Transplante de Rim , Transplante de Pulmão , Rejeição de Enxerto/prevenção & controle , Humanos , Imunossupressores/uso terapêutico , Adesão à Medicação
2.
J Cannabis Res ; 4(1): 8, 2022 Jan 26.
Artigo em Inglês | MEDLINE | ID: mdl-35081979

RESUMO

BACKGROUND: Certified public accountants must follow very high standards of ethical conduct as set forth by the AICPA Code of Professional Conduct and individual state licensing requirements. A 2019 grounded theory qualitative study posed that CPAs remain largely hesitant to serve the cannabis industry primarily because they fear federal prosecution as long as cannabis remains on the DEA's Schedule I Drug List. The purpose of this research was to determine the perceptions of CPAs regarding providing accounting services to the cannabis industry in states that have legalized cannabis usage. This study investigated whether CPAs would serve the industry, why they might decline to serve the industry, what risks they believe serving the industry posed, and whether they believe serving the cannabis industry would create a moral or ethical issue. METHODS: This follow-up quantitative study investigated a small convenience sample of approximately one hundred CPAs in Colorado and Washington to learn more about their perceptions of serving the cannabis industry. Data was analyzed using chi-square and Mann-Whitney U tests to determine if there were any differences in perceptions between groups such as states, gender, and age categories. RESULTS: Of the participants, 77% responded that neither they nor their firm provided services to a cannabis-related business client compared to 23% that did serve cannabis clients. More Colorado CPAs were willing to turn down CRB work than were expected and fewer Colorado CPAs would be willing to take on CRB clients than were expected. While in Washington, fewer CPAs would turn down RB clients than expected, and more are willing to accept CRB clients than were expected. The risk due to potential liability coverage issues due to serving the cannabis industry was rated the highest while the risk of losing the CPA license was rated lowest. Data indicated that there was not a statistically significant difference between Colorado and Washington participants related to whether they were morally or religiously opposed to working in the industry or if they viewed serving the industry as an ethical violation. CONCLUSION: CPAs remain largely unwilling to serve the cannabis industry primarily because CPAs fear federal prosecution as long as cannabis remains on the DEA's Schedule I Drug Listing. The results of this study indicate that while most CPAs are not morally or religiously opposed to serving the industry, about half still believe doing so may constitute an ethical violation for a CPA.

3.
Pathologe ; 42(Suppl 2): 122-128, 2021 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-34671837

RESUMO

BACKGROUND: In situ follicular neoplasia (ISFN) is a t(14;18)(q32;q21)+ precursor lesion of follicular lymphoma (FL), which in turn can transform into diffuse large B­cell lymphoma (DLBCL). For DLBCL that arise de novo, no precursor lesion is known. Given the high frequency of the t(14;18) translocation in de novo DLBCL as well, we investigated whether they can also arise from ISFN without FL as an intermediate step. OBJECTIVES: To investigate the clonal evolution of ISFN to DLBCL - transformed from FL and de novo. MATERIALS AND METHODS: Identification of ISFN lesions in patients with DLBCL was performed by BCL2 staining of reactive lymphoid tissues. ISFN and DLBCL were subsequently analyzed by fluorescence in situ hybridization, clonality analyses, sequencing of the t(14;18) breakpoint, and targeted next-generation sequencing. RESULTS: 10 cases with paired ISFN and DLBCL samples were identified, 6 of which were de novo DLBCL and 4 transformed from FL. 3 DLBCL carried MYC-rearrangements in addition to the t(14;18) and were classified as high-grade B­cell lymphoma (HGBL). The clonal relationship of ISFN and DLBCL/HGBL was confirmed for all cases. CREBBP, KMT2D, EZH2, TNFRSF14, and BCL2 were the genes most frequently mutated, with the distribution of private and shared mutations pointing to 2 different scenarios of clonal evolution. In most cases, DLBCL/HGBL, ISFN, and, if also present, FL had evolved divergently from a common progenitor, whereas linear evolution was less frequent. CONCLUSION: We show for the first time that t(14;18)+ DLBCL/HGBL can arise directly from ISFN without FL as an intermediate step and that during this progression, divergent evolution is common.


Assuntos
Linfoma Folicular , Linfoma Difuso de Grandes Células B , Evolução Molecular , Humanos , Hibridização in Situ Fluorescente , Linfoma Folicular/genética , Linfoma Difuso de Grandes Células B/genética , Translocação Genética/genética
4.
Ann Oncol ; 32(11): 1400-1409, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34438040

RESUMO

BACKGROUND: Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous disease with respect to outcome. Features of the tumor microenvironment (TME) are associated with prognosis when assessed by gene expression profiling. However, it is uncertain whether assessment of the microenvironment can add prognostic information to the most relevant and clinically well-established molecular subgroups when analyzed by immunohistochemistry (IHC). PATIENTS AND METHODS: We carried out a histopathologic analysis of biomarkers related to TME in a very large cohort (n = 455) of DLBCL treated in prospective trials and correlated with clinicopathologic and molecular data, including chromosomal rearrangements and gene expression profiles for cell-of-origin and TME. RESULTS: The content of PD1+, FoxP3+ and CD8+, as well as vessel density, was not associated with outcome. However, we found a low content of CD68+ macrophages to be associated with inferior progression-free survival (PFS) and overall survival (OS; P = 0.023 and 0.040, respectively) at both univariable and multivariable analyses, adjusted for the factors of the International Prognostic Index (IPI), MYC break and BCL2/MYC and BCL6/MYC double-hit status. The subgroup of PDL1+ macrophages was not associated with survival. Instead, secreted protein acidic and cysteine rich (SPARC)-positive macrophages were identified as the subtype of macrophages most associated with survival. SPARC-positive macrophages and stromal cells directly correlated with favorable PFS and OS (both, P[log rank] <0.001, P[trend] < 0.001). The association of SPARC with prognosis was independent of the factors of the IPI, MYC double-/triple-hit status, Bcl2/c-myc double expression, cell-of-origin subtype and a recently published gene expression signature [lymphoma-associated macrophage interaction signature (LAMIS)]. CONCLUSIONS: SPARC expression in the TME detected by a single IHC staining with fair-to-good interobserver reproducibility is a powerful prognostic parameter. Thus SPARC expression is a strong candidate for risk assessment in DLBCL in daily practice.


Assuntos
Linfoma Difuso de Grandes Células B , Proteínas Proto-Oncogênicas c-myc , Protocolos de Quimioterapia Combinada Antineoplásica , Humanos , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Linfoma Difuso de Grandes Células B/genética , Macrófagos/metabolismo , Osteonectina/uso terapêutico , Prognóstico , Estudos Prospectivos , Proteínas Proto-Oncogênicas c-bcl-2 , Proteínas Proto-Oncogênicas c-bcl-6 , Proteínas Proto-Oncogênicas c-myc/genética , Proteínas Proto-Oncogênicas c-myc/metabolismo , Reprodutibilidade dos Testes , Microambiente Tumoral/genética
5.
J Cannabis Res ; 2(1): 41, 2020 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-33526144

RESUMO

BACKGROUND: Cannabis-related businesses (CRBs), in states where cannabis is legal, may be unable to obtain professional financial services including banking, insurance, and accounting because of federal laws and regulations. This qualitative study investigated the following research questions. 1. Why are some Certified Public Accountants unwilling to provide services to cannabis-related businesses? 2. How do CRBs compensate for lack of Certified Public Accountant services? 3. What does a certified public accountant need to know about the cannabis industry prior to engaging to provide services to CRBs? METHODS: Data for this grounded-theory qualitative study was gathered from twenty-three semi-structured phone and face-to-face interviews. Ten cannabis-related business owners were recruited from a convenience sample after attempting a broad recruiting effort. Thirteen Certified Public Accountants with active licenses in Colorado or Washington State participated from firms of varying size and willingness to serve the cannabis industry. The individual interviews, which lasted from twenty minutes to more than an hour, focused on the participants' perceptions of the complexities of accounting and tax compliance for cannabis businesses. RESULTS: Eight of the thirteen Certified Public Accountants interviewed would not provide services to the cannabis industry with the primary reason given that cannabis is federally illegal. All ten of the cannabis business owners interviewed indicated they engage a Certified Public Accountant to provide tax services. Seven out of ten CRB participants and ten of the thirteen Certified Public Accountant participants indicated that extensive industry knowledge is needed for an accountant to competently provide services to a CRB. CONCLUSIONS: CRB owners need to carefully consider the industry knowledge and experience of a potential Certified Public Accountant prior to engaging them. This study shows that US Certified Public Accountants should weigh the risk of federal prosecution and potential loss of the Certified Public Accountant license when deciding whether to serve a CRB client. The study also found that a Certified Public Accountant must commit to acquiring and maintaining substantial specialized knowledge related to tax Code Section 280E, internal controls for a cash-only or cash-intensive business, and the workings of the cannabis industry under the current regulatory conditions.

6.
Pathologe ; 40(2): 157-168, 2019 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-30019203

RESUMO

After 8 years, the WHO has now published the updated version of the 4th edition of the classification of hematopoietic and lymphoid tumors. This update provides a conceptual rewrite of existing entities as well as some new provisional entities and categories, particularly among the aggressive B­cell lymphomas. Important new diagnostic categories include the high-grade B­cell lymphomas, the large B­cell lymphoma with IRF4 rearrangement, and the Burkitt-like lymphoma with 11q aberrations. Of particular importance, new concepts concerning the taxonomy and classification of early lymphoid lesions or precursor lesions are included, such as the in situ follicular neoplasia or the in situ mantle cell neoplasia. In addition, the concept of indolent lymphoproliferations, such as breast-implant-associated anaplastic large cell lymphoma and the indolent T­cell lymphoproliferative disorder of the gastrointestinal tract, has been strengthened. Finally, diagnostic criteria for existing lymphoma entities have been refined.


Assuntos
Linfoma , Linfoma de Burkitt , Humanos , Linfoma de Células B , Transtornos Linfoproliferativos , Organização Mundial da Saúde
7.
Pathologe ; 40(2): 152-156, 2019 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-29666909

RESUMO

The update of the 4th edition of the WHO classification for hematopoietic neoplasms introduces changes in the field of mature aggressive B­cell lymphomas that are relevant to diagnostic pathologists. In daily practice, the question arises of which analysis should be performed when diagnosing the most common lymphoma entity, diffuse large B­cell lymphoma. We discuss the importance of the cell of origin, the analysis of MYC translocations, and the delineation of the new WHO entities of high-grade B­cell lymphomas.


Assuntos
Linfoma Difuso de Grandes Células B , Patologistas , Humanos , Translocação Genética , Organização Mundial da Saúde
8.
Nervenarzt ; 89(1): 51-57, 2018 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-27909737

RESUMO

BACKGROUND: Due to the relatively recent introduction of psychotherapy in South Korea and against the background of collectivist and Confucian values, it has been suggested that South Koreans harbor more negative attitudes towards psychotherapy compared to Germans and that the social acceptance of psychotherapy is lower. METHODS: We compared the attitudes of 99 women from South Korea with 98 German women using the questionnaire on attitudes towards psychotherapeutic treatment (FEP). For the study of the South Korean women we translated the questionnaire into the Korean language. RESULTS: The results of the psychometric analysis suggest that the Korean version of the FEP is of acceptable quality. South Korean women reported a significantly more negative attitude towards psychotherapy compared to German women. Furthermore, South Korean women anticipated a more skeptical social attitude towards psychotherapy compared to Germans. CONCLUSION: The presented results suggest the relevance of cultural imprinting in psychotherapy. They are discussed with respect to culture-specific self-concepts, concepts of disease and healing expectations and the increase of individualistic values in the Korean society.


Assuntos
Comparação Transcultural , Psicoterapia , Opinião Pública , Adulto , Atitude Frente a Saúde , Confucionismo , Feminino , Alemanha , Humanos , Individualidade , Pessoa de Meia-Idade , Distância Psicológica , República da Coreia , Autoimagem , Apoio Social , Valores Sociais , Inquéritos e Questionários
9.
Leukemia ; 32(3): 685-693, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-28824170

RESUMO

Depending on disease stage follicular lymphoma (FL) lack the t(14;18) in ~15-~50% of cases. Nevertheless, most of these cases express BCL2. To elucidate mechanisms triggering BCL2 expression and promoting pathogenesis in t(14;18)-negative FL, exonic single-nucleotide variant (SNV) profiles of 28 t(14;18)-positive and 13 t(14;18)-negative FL were analyzed, followed by the integration of copy-number changes, copy-neutral LOH and published gene-expression data as well as the assessment of immunoglobulin N-glycosylation sites. Typical FL mutations also affected t(14;18)-negative FL. Curated gene set/pathway annotation of genes mutated in either t(14;18)-positive or t(14;18)-negative FL revealed a strong enrichment of same or similar gene sets but also a more prominent or exclusive enrichment of immune response and N-glycosylation signatures in t(14;18)-negative FL. Mutated genes showed high BCL2 association in both subgroups. Among the genes mutated in t(14;18)-negative FL 555 were affected by copy-number alterations and/or copy-neutral LOH and 96 were differently expressed between t(14;18)-positive and t(14;18)-negative FL (P<0.01). N-glycosylation sites were detected considerably less frequently in t(14;18)-negative FL. These results suggest a diverse portfolio of genetic alterations that may induce or regulate BCL2 expression or promote pathogenesis of t(14;18)-negative FL as well as a less specific but increased crosstalk with the microenvironment that may compensate for the lack of N-glycosylation.


Assuntos
Biomarcadores Tumorais , Linfoma Folicular/genética , Proteínas Proto-Oncogênicas c-bcl-2/genética , Cromossomos Humanos Par 14 , Cromossomos Humanos Par 18 , Biologia Computacional/métodos , Variações do Número de Cópias de DNA , Glicosilação , Humanos , Região Variável de Imunoglobulina/genética , Linfoma Folicular/metabolismo , Mutação , Polimorfismo de Nucleotídeo Único , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Translocação Genética , Sequenciamento do Exoma
10.
Prog Transplant ; 27(2): 160-166, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28617170

RESUMO

INTRODUCTION: Nonadherence may cause severe health problems in heart transplant (HTx) recipients. RESEARCH QUESTIONS: The present study aimed to investigate adherence to prescribed medication and recommended lifestyle habits in post-HTx patients and to assess associations between adherence, quality of life (QOL), and psychological well-being. DESIGN: A questionnaire package was sent to all HTx patients from our clinic (n = 858) to answer questions anonymously on medication adherence, dietary recommendations (avoidance of raw animal products and ice cream), pet keeping (risk of zoonosis), anxiety and depression, QOL, and posttraumatic stress disorders. RESULTS: Of the contacted patients, 524 (61%) responded and 505 fulfilled the inclusion criteria (age ≥18 years and ability to understand German). Of the study participants, 72.4% reported taking their medications very correctly, 72.2% stated consuming alcohol less often than once a week, 58.3% performed physical exercise at least once a week, one-third reported eating nonrecommended foods, 22.1% stated pet keeping, and 4.3% reported smoking. Adherence to prescribed medication was positively associated with age ( P < .001) and mental QOL ( P = .015) but was unrelated to eating nonrecommended foods ( P > .05). Depressiveness correlated inversely with physical QOL ( r = -0.232; P < .01) and mental QOL ( r = -0.411; P < .01). Stress disorders and minor stressful events were reported by 7.8% and 46.6%, respectively. Stress disorders correlated inversely with mental QOL ( r = -0.282; P < .01) and physical QOL ( r = -0.422; P < .01). DISCUSSION: Many HTx patients adhere to prescribed medications and health advice. Nevertheless, nonadherence is a problem, especially in younger HTx patients, indicating the need for a nonadherence crisis intervention program for long-term HTx patients.


Assuntos
Dieta , Rejeição de Enxerto/prevenção & controle , Transplante de Coração , Imunossupressores/uso terapêutico , Estilo de Vida , Adesão à Medicação/estatística & dados numéricos , Saúde Mental , Animais de Estimação , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Consumo de Bebidas Alcoólicas/epidemiologia , Animais , Ansiedade/epidemiologia , Estudos Transversais , Depressão/epidemiologia , Exercício Físico , Feminino , Doenças Transmitidas por Alimentos/prevenção & controle , Alemanha/epidemiologia , Humanos , Sorvetes , Masculino , Pessoa de Meia-Idade , Pasteurização , Cooperação do Paciente/estatística & dados numéricos , Qualidade de Vida , Alimentos Crus , Fumar/epidemiologia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Inquéritos e Questionários , Adulto Jovem , Zoonoses/prevenção & controle
11.
Ann Oncol ; 28(7): 1540-1546, 2017 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-28398499

RESUMO

BACKGROUND: There is an on-going debate whether 2- or 3-weekly administration of R-CHOP is the preferred first-line treatment for elderly patients with diffuse large B-cell lymphoma (DLBCL). The UK NCRI R-CHOP14v21 randomized phase 3 trial did not demonstrate a difference in outcomes between R-CHOP-14 and R-CHOP-21 in newly diagnosed DLBCL patients aged 19-88 years, but data on elderly patients have not been reported in detail so far. Here, we provide a subgroup analysis of patients ≥60 years treated on the R-CHOP14v21 trial with extended follow-up. PATIENTS AND METHODS: Six hundred and four R-CHOP14v21 patients ≥60 years were included in this subgroup analysis, with a median follow-up of 77.7 months. To assess the impact of MYC rearrangements (MYC-R) and double-hit-lymphoma (DHL) on outcome in elderly patients, we performed a joint analysis of cases with available molecular data from the R-CHOP14v21 (N = 217) and RICOVER-60 (N = 204) trials. RESULTS: Elderly DLBCL patients received high dose intensities with median total doses of ≥98% for all agents. Toxicities were similar in both arms with the exception of more grade ≥3 neutropenia (P < 0.0001) and fewer grade ≥3 thrombocytopenia (P = 0.05) in R-CHOP-21 versus R-CHOP-14. The elderly patient population had a favorable 5-year overall survival (OS) of 69% (95% CI: 65-73). We did not identify any subgroup of patients that showed differential response to either regimen. In multivariable analysis including individual factors of the IPI, gender, bulk, B2M and albumin levels, only age and B2M were of independent prognostic significance for OS. Molecular analyses demonstrated a significant impact of MYC-R (HR = 1.96; 95% CI: 1.22-3.16; P = 0.01) and DHL (HR = 2.21; 95% CI: 1.18-4.11; P = 0.01) on OS in the combined trial cohorts, independent of other prognostic factors. CONCLUSIONS: Our data support equivalence of both R-CHOP application forms in elderly DLBCL patients. Elderly MYC-R and DHL patients have inferior prognosis and should be considered for alternative treatment approaches. TRIAL NUMBERS: ISCRTN 16017947 (R-CHOP14v21); NCT00052936 (RICOVER-60).


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Biomarcadores Tumorais/genética , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Proteínas Proto-Oncogênicas c-bcl-2/genética , Proteínas Proto-Oncogênicas c-bcl-6/genética , Proteínas Proto-Oncogênicas c-myc/genética , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Murinos/administração & dosagem , Anticorpos Monoclonais Murinos/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Ciclofosfamida/administração & dosagem , Ciclofosfamida/efeitos adversos , Doxorrubicina/administração & dosagem , Doxorrubicina/efeitos adversos , Esquema de Medicação , Feminino , Rearranjo Gênico , Humanos , Estimativa de Kaplan-Meier , Linfoma Difuso de Grandes Células B/genética , Linfoma Difuso de Grandes Células B/mortalidade , Linfoma Difuso de Grandes Células B/patologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Seleção de Pacientes , Medicina de Precisão , Prednisona/administração & dosagem , Prednisona/efeitos adversos , Fatores de Risco , Rituximab , Fatores de Tempo , Resultado do Tratamento , Reino Unido , Vincristina/administração & dosagem , Vincristina/efeitos adversos
12.
Leukemia ; 31(1): 83-91, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27389057

RESUMO

Follicular lymphoma (FL) is typically an indolent disease, but 30-40% of FL cases transform into an aggressive lymphoma (tFL) with a poor prognosis. To identify the genetic changes that drive this transformation, we sequenced the exomes of 12 cases with paired FL and tFL biopsies and identified 45 recurrently mutated genes in the FL-tFL data set and 39 in the tFL cases. We selected 496 genes of potential importance in transformation and sequenced them in 23 additional tFL cases. Integration of the mutation data with copy-number abnormality (CNA) data provided complementary information. We found recurrent mutations of miR-142, which has not been previously been reported to be mutated in FL/tFL. The genes most frequently mutated in tFL included KMT2D (MLL2), CREBBP, EZH2, BCL2 and MEF2B. Many recurrently mutated genes are involved in epigenetic regulation, the Janus-activated kinase-signal transducer and activator of transcription (STAT) or the nuclear factor-κB pathways, immune surveillance and cell cycle regulation or are TFs involved in B-cell development. Of particular interest are mutations and CNAs affecting S1P-activated pathways through S1PR1 or S1PR2, which likely regulate lymphoma cell migration and survival outside of follicles. Our custom gene enrichment panel provides high depth of coverage for the study of clonal evolution or divergence.


Assuntos
Carcinogênese/genética , Transformação Celular Neoplásica/genética , Dosagem de Genes , Linfoma Folicular/genética , Evolução Clonal/genética , Análise Mutacional de DNA , Epigênese Genética/genética , Exoma/genética , Humanos , Oncogenes
13.
Ann Oncol ; 27(7): 1323-9, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27117536

RESUMO

BACKGROUND: Histologically, follicular lymphoma (FL) grades 1, 2 and 3A are composed of two distinct cell types, centroblasts and centrocytes. FL grade 3B is composed only of centroblasts and has been shown to differ in immunophenotype and genetics from FL that contain centrocytes. We aimed to understand the pathogenetic and clinical relation between FL grade 3A to FL grade 1/2 on the one hand and FL grade 3B on the other hand. PATIENTS AND METHODS: Trial patients with long-term follow-up and diagnosis of FL grade 3 were selected and samples underwent a second central pathological review using a multiple-observer approach to assess grading. RESULTS: Interobserver variability for diagnosing FL grade 3 was high. FL grade 3A frequently harbored areas of FL grade 1/2 within the same tissue specimen. FL grade 3B rarely coexisted with grade 1/2 or 3A, suggesting divergent pathogenesis. There was no statistically significant difference in outcome between 47 cases of FL grade 3A and 14 cases of grade 3B. Compared with grade 1/2 FL, both groups showed longer progression-free survival without late events, especially after immunochemotherapy; this outcome difference was retained after adjustment for clinical prognostic factors. The subgroup of FL grade 3A with an additional FL grade 1/2 component or a translocation t(14;18) showed a poorer outcome. In contrast, the FL grade 3A lacking t(14;18) and of localized stage resembled the pediatric type of FL and showed a very good outcome. FL3 with MYC breaks showed a poor outcome. CONCLUSIONS: The results suggest that first-line immunochemotherapy might allow long-lasting remissions in a subgroup of FL grade 3A similar to diffuse large B-cell lymphoma. Within FL3A, prognostic subgroups can be identified by analyzing for coexisting FL1/2 and MYC breaks.


Assuntos
Linfoma Folicular/genética , Linfoma Folicular/patologia , Linfoma não Hodgkin/genética , Linfoma não Hodgkin/patologia , Prognóstico , Cromossomos Humanos Par 18/genética , Intervalo Livre de Doença , Feminino , Alemanha , Humanos , Imunofenotipagem/métodos , Linfoma Folicular/classificação , Linfoma não Hodgkin/classificação , Masculino , Gradação de Tumores , Patologia Clínica , Translocação Genética
14.
Oncogene ; 35(32): 4269-81, 2016 08 11.
Artigo em Inglês | MEDLINE | ID: mdl-26776161

RESUMO

Constitutive activation of the antiapoptotic nuclear factor-κB (NF-κB) signaling pathway is a hallmark of the activated B-cell-like (ABC) subtype of diffuse large B-cell lymphomas (DLBCL). Recurrent oncogenic mutations are found in the scaffold protein CARMA1 (CARD11) that connects B-cell receptor (BCR) signaling to the canonical NF-κB pathway. We asked how far additional downstream processes are activated and contribute to the oncogenic potential of DLBCL-derived CARMA1 mutants. To this end, we expressed oncogenic CARMA1 in the NF-κB negative DLBCL lymphoma cell line BJAB. By a proteomic approach we identified recruitment of ß-catenin and its destruction complex consisting of APC, AXIN1, CK1α and GSK3ß to oncogenic CARMA1. Recruitment of the ß-catenin destruction complex was independent of CARMA1-BCL10-MALT1 complex formation or constitutive NF-κB activation and promoted the stabilization of ß-catenin. The ß-catenin destruction complex was also recruited to CARMA1 in ABC DLBCL cell lines, which coincided with elevated ß-catenin expression. In line, ß-catenin was frequently detected in non-GCB DLBCL biopsies that rely on chronic BCR signaling. Increased ß-catenin amounts alone were not sufficient to induce classical WNT target gene signatures, but could augment TCF/LEF-dependent transcriptional activation in response to WNT signaling. In conjunction with NF-κB, ß-catenin enhanced expression of immunosuppressive interleukin-10 and suppressed antitumoral CCL3, indicating that ß-catenin can induce a favorable tumor microenvironment. Thus, parallel activation of NF-κB and ß-catenin signaling by gain-of-function mutations in CARMA1 augments WNT stimulation and is required for regulating the expression of distinct NF-κB target genes to trigger cell-intrinsic and extrinsic processes that promote DLBCL lymphomagenesis.


Assuntos
Proteínas Adaptadoras de Sinalização CARD/genética , Proteínas Adaptadoras de Sinalização CARD/metabolismo , Carcinogênese , Guanilato Ciclase/genética , Guanilato Ciclase/metabolismo , Linfoma Difuso de Grandes Células B/metabolismo , NF-kappa B/metabolismo , Transdução de Sinais , beta Catenina/metabolismo , Linhagem Celular Tumoral , Regulação Neoplásica da Expressão Gênica , Humanos , Linfoma Difuso de Grandes Células B/patologia , Mutação , Estabilidade Proteica , Fatores de Transcrição TCF/metabolismo , Proteínas rho de Ligação ao GTP/metabolismo
15.
Leukemia ; 30(4): 854-60, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26621338

RESUMO

Approximately 15% of follicular lymphomas (FLs) lack breaks in the BCL2 locus. The aim of this study was to better define molecular and clinical features of BCL2-breakpoint/t(14;18)-negative FLs. We studied the presence of BCL2, BCL6 and MYC breaks by fluorescence in situ hybridization and the expression of BCL2, MUM1, CD10, P53 and Ki67 in large clinical trial cohorts of 540 advanced-stage FL cases and 116 early-stage disease FL patients treated with chemotherapy regimens and radiation, respectively. A total of 86% and 53% of advanced- and early-stage FLs were BCL2-breakpoint-positive, respectively. BCL2 was expressed in almost all FLs with BCL2 break and also in 86% and 69% of BCL2-breakpoint-negative advanced- and early-stage FLs, respectively. CD10 expression was significantly reduced in BCL2-breakpoint-negative FLs of all stages and MUM1 and Ki67 expression were significantly increased in BCL2-break-negative early-stage FLs. Patient characteristics did not differ between FLs with and without BCL2 breaks and neither did survival times in advanced-stage FLs. These results suggest that the molecular profile differs to some extent between FLs with and without BCL2 breaks and support the notion that FLs with and without BCL2 breaks belong to the same lymphoma entity.


Assuntos
Quebra Cromossômica , Regulação Neoplásica da Expressão Gênica , Linfoma Folicular/patologia , Proteínas Proto-Oncogênicas c-bcl-2/genética , Cromossomos Humanos Par 14/genética , Cromossomos Humanos Par 18/genética , Estudos de Coortes , Feminino , Seguimentos , Humanos , Linfoma Folicular/genética , Linfoma Folicular/mortalidade , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Fenótipo , Prognóstico , Taxa de Sobrevida , Translocação Genética/genética
16.
Breast Cancer Res Treat ; 155(1): 85-97, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26650824

RESUMO

The presence or absence of estrogen and progesterone steroid hormone receptor expression (ER, PR) is an essential feature of invasive breast cancer and determines prognosis and endocrine treatment decisions. Among the four ER/PR receptor phenotypes, the ER-/PR+ is infrequent, and its clinical relevance has been controversially discussed. Thus, we investigated its clinical significance and gene expression pattern in large datasets. In a retrospective clinical study of 15,747 breast cancer patients, we determined the ER/PR subtype survival probabilities using Kaplan-Meier and Cox regression analyses. From The Cancer Genome Atlas (TCGA) breast cancer dataset, PAM50 expression signature and pathway analyses were performed to test for distinct molecular features. In our cohort, the ER-/PR+ phenotype has been observed at a frequency of 4.1 % and was associated with an improved 10-year survival for stage I cancers compared to the ER+/PR+ reference subtype (median; 95 % CI 88.1 %; 83-93 vs. 84.3 %; 82-86 %, P = 0.024) as was confirmed by multivariate analysis over the entire follow-up (HR 0.59, 95 % CI 0.38-0.92, P = 0.021). This association lacked significance when including all stages. ER-/PR+ patients treated with antihormonal agents (34.5 %) had shorter survival compared to their non-treated counterparts (Log-rank P = 0.0001). PAM50 signatures suggest a distinct configuration for the ER-/PR+ phenotype. This specific phenotype has been further separated by a set of 59 uniquely expressed genes. Our study supports the notion of the existence of an ER-/PR+ phenotype with clinical and molecular features distinct from the large group of ER+/PR+ patients.


Assuntos
Neoplasias da Mama/genética , Neoplasias da Mama/mortalidade , Perfilação da Expressão Gênica , Fenótipo , Receptores de Estrogênio/genética , Receptores de Progesterona/genética , Transcriptoma , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Gradação de Tumores , Metástase Neoplásica , Estadiamento de Neoplasias , Avaliação de Resultados da Assistência ao Paciente , Prognóstico , Análise de Sobrevida , Adulto Jovem
18.
Clin Transl Gastroenterol ; 6: e103, 2015 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-26181292

RESUMO

OBJECTIVES: How alcohol consumption affects the integrity and the defense mechanisms of the mucosa in the upper gastrointestinal tract is largely unknown. We examined the effect of heavy alcohol use on gastric and duodenal Paneth-cell-derived and epithelial antimicrobial peptides (AMPs), cytokines, and the Wnt pathway, an important regulator of epithelial regeneration. METHODS: In 22 patients with heavy alcohol use and 17 control subjects, biopsies from gastric corpus, antrum, and duodenum were examined for messenger RNA (mRNA) of AMPs, cytokines, and Wnt pathway factors using real-time PCR. The expression of the α-defensin HD5 was analyzed immunohistochemically. The effect of alcohol exposure on Wnt signaling and AMP production was also studied in a gastric cell line using mRNA and reporter gene assays. RESULTS: Heavy alcohol use was associated with increased expression of Paneth cell HD5 and HD6 mRNA in the antrum, where these products are normally absent (HD5 mRNA in controls vs. PATIENTS: 2100±900 and 365 500±161 600, HD6 mRNA: 320±130 and 58 300±32 600 copies per 10 ng total RNA, means±s.e.m., P value: 0.022 and 0.011). Upregulated HD5 was independent of intestinal metaplasia that was observed in a minority of patients. No significant differences were found for ß-defensins and cytokines (interleukins IL1ß, IL6, IL8, IL10). In patients, Wnt pathway factors showed a trend toward higher levels. In vitro, ethanol exposure induced the production of HD5 and HD6 and activation of the Wnt pathway. CONCLUSIONS: Alcohol exposure can induce gastric Paneth cell AMP expression. This may be linked to Wnt pathway activation, which has an important role in the epithelial regenerative homeostasis.

19.
J Eur Acad Dermatol Venereol ; 29(10): 1898-904, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25732784

RESUMO

BACKGROUND: Psoriasis has a negative impact on health-related quality of life (HRQoL) and may favour mental comorbidity. OBJECTIVE: To investigate the contribution of chronic stress and burnout experience to HRQoL and how mental health influences the efficacy of an inpatient rehabilitation measure in psoriasis patients. METHODS: Eighty-four psoriasis patients taking part in a 3-week inpatient rehabilitation measure participated in the study. Severity of psoriasis was assessed with the Psoriasis Area and Severity Index (PASI) and by patients' self-evaluation at the beginning and end of treatment. The following aspects of mental health were explored using validated questionnaires. Symptoms of chronic stress and burnout experience: Trier Inventory for the Assessment of Chronic Stress (TICS) and Shirom Melamed Burnout Measure (SMBM). Symptoms of depression: depression scale of the Patient Health Questionnaire in the German version (PHQ-D). HRQoL: Dermatology Life Quality Index (DLQI) and Short Form Health Survey-8 (SF-8). RESULTS: Linear regression analyses revealed that chronic stress, burnout experience and perceived symptom severity but not clinician-assessed severity of psoriasis had independent negative effects on HRQoL. Patients who achieved a PASI reduction of <75% at discharge from the rehabilitation measure had lower baseline QoL and showed more symptoms of depression, chronic stress and burnout than patients who achieved a PASI improvement of ≥75. CONCLUSION: Chronic stress and burnout have appreciable influence on HRQoL and may adversely affect treatment success in psoriasis patients. Our data underscore the importance of a multidimensional approach in the management of psoriasis.


Assuntos
Psoríase/psicologia , Qualidade de Vida/psicologia , Índice de Gravidade de Doença , Estresse Psicológico , Adulto , Doença Crônica , Estudos Transversais , Depressão/etiologia , Autoavaliação Diagnóstica , Fadiga/etiologia , Feminino , Humanos , Masculino , Fadiga Mental/etiologia , Pessoa de Meia-Idade , Psoríase/reabilitação , Inquéritos e Questionários
20.
Leukemia ; 29(7): 1578-86, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25708834

RESUMO

Antibody drug conjugates (ADCs), in which cytotoxic drugs are linked to antibodies targeting antigens on tumor cells, represent promising novel agents for the treatment of malignant lymphomas. Pinatuzumab vedotin is an anti-CD22 ADC and polatuzumab vedotin an anti-CD79B ADC that are both linked to the microtubule-disrupting agent monomethyl auristatin E (MMAE). In the present study, we analyzed the activity of these agents in different molecular subtypes of diffuse large B-cell lymphoma (DLBCL) both in vitro and in early clinical trials. Both anti-CD22-MMAE and anti-CD79B-MMAE were highly active and induced cell death in the vast majority of activated B-cell-like (ABC) and germinal center B-cell-like (GCB) DLBCL cell lines. Similarly, both agents induced cytotoxicity in models with and without mutations in the signaling molecule CD79B. In line with these observations, relapsed and refractory DLBCL patients of both subtypes responded to these agents. Importantly, a strong correlation between CD22 and CD79B expression in vitro and in vivo was not detectable, indicating that patients should not be excluded from anti-CD22-MMAE or anti-CD79B-MMAE treatment because of low target expression. In summary, these studies suggest that pinatuzumab vedotin and polatuzumab vedotin are active agents for the treatment of patients with different subtypes of DLBCL.


Assuntos
Anticorpos Monoclonais/farmacologia , Antígenos CD79/imunologia , Imunoconjugados/farmacologia , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Linfoma Difuso de Grandes Células B/imunologia , Lectina 2 Semelhante a Ig de Ligação ao Ácido Siálico/imunologia , Apoptose/efeitos dos fármacos , Western Blotting , Antígenos CD79/genética , Ciclo Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Ensaios Clínicos Fase I como Assunto , Estudos de Coortes , Citometria de Fluxo , Seguimentos , Humanos , Técnicas Imunoenzimáticas , Linfoma Difuso de Grandes Células B/classificação , Linfoma Difuso de Grandes Células B/patologia , Mutação/genética , Estadiamento de Neoplasias , Prognóstico , Lectina 2 Semelhante a Ig de Ligação ao Ácido Siálico/genética , Células Tumorais Cultivadas
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