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1.
J Stroke Cerebrovasc Dis ; 32(9): 107288, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37542761

RESUMO

BACKGROUND: Large vessel occlusions (LVO) stroke is associated with cancer. Whether this association differs among patients with LVO that undergo endovascular thrombectomy (EVT) according to cancer type remains unknown. PATIENTS AND METHODS: Data from consecutive patients that underwent EVT for LVO at three academic centers were pulled and analyzed retrospectively. Patients with LVO and solid tumors were compared to those with hematological tumors. Associations of cancer type with 90-day functional outcome and mortality were calculated in multivariable analyses. RESULTS: Of the 154 patients with cancer and LVO that underwent EVT (mean age 74±11, 43% men, median NIHSS 15), 137 had solid tumors (89%) and 17 (11%) had hematologic tumors. Patients with solid cancer did not significantly differ from those with hematological malignancy in demographics, risk factor profile, stroke severity and subtype, and procedural variables. Outcome parameters including rates of favorable target recanalization and favorable outcome or mortality at discharge and 90 days post stroke were similar. Safety parameters including rates of symptomatic intracranial hemorrhage also did not differ between the groups. On regression analyses, controlling for various prognostic variables cancer type was not associated with mortality or favorable outcomes. CONCLUSIONS: Our study suggests that the safety and efficacy of EVT in patients with malignancy does not depend on cancer type. Patients with malignancy should be considered for EVT regardless of cancer type.


Assuntos
Isquemia Encefálica , Procedimentos Endovasculares , AVC Isquêmico , Neoplasias , Acidente Vascular Cerebral , Lesões do Sistema Vascular , Masculino , Humanos , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Feminino , Estudos Retrospectivos , Resultado do Tratamento , Procedimentos Endovasculares/efeitos adversos , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/terapia , Trombectomia/efeitos adversos , AVC Isquêmico/etiologia , Lesões do Sistema Vascular/etiologia , Neoplasias/complicações , Neoplasias/diagnóstico , Neoplasias/terapia , Isquemia Encefálica/etiologia
3.
Z Rheumatol ; 75(1): 63-7, 2016 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-26813689

RESUMO

The risk of gynecological cancers in patients with inflammatory rheumatic diseases only seems to be elevated with respect to cervical cancer and mainly in patients with systemic lupus erythematosus. There is increasing evidence for an influence of the immune system on tumor control of gynecological malignancies; however, an adverse influence of immunosuppressive treatment in rheumatic patients was indicated only for the risk of cervical cancer. In contrast, biologics could not be shown to cause an increased risk of cervical cancer but data on this topic are limited. General screening recommendations exist for breast cancer and cervical cancer. Recommendations for follow-up after oncological treatment are presented. Because of limited evidence immunosuppressive and biological treatment should be applied with great restraint at least within the first 5 years after curative oncological treatment also for gynecological tumors. As far as breast cancer is concerned an even longer interval is under discussion.


Assuntos
Antirreumáticos/administração & dosagem , Antirreumáticos/efeitos adversos , Neoplasias dos Genitais Femininos/induzido quimicamente , Neoplasias dos Genitais Femininos/prevenção & controle , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Guias de Prática Clínica como Assunto , Relação Dose-Resposta a Droga , Esquema de Medicação , Europa (Continente) , Medicina Baseada em Evidências , Feminino , Alemanha , Humanos , Lúpus Eritematoso Sistêmico/complicações , Resultado do Tratamento
4.
Tijdschr Psychiatr ; 57(9): 680-3, 2015.
Artigo em Holandês | MEDLINE | ID: mdl-26401610

RESUMO

Doctors dealing with patients who simultaneously have both psychiatric and somatic disorders often find themselves 'trapped' between two Dutch laws, the WBGO (the Law on the Medical Contract) and the Bopz (Law on Compulsory Admission to Psychiatric Hospitals). In order to illustrate a typical situation we present a case-study concerning a 50-year-old male with a probable seminoma testis and paranoid thoughts arising from an autistic disorder. The patient had refused the investigations and treatment that were considered necessary. His compulsory attendance at the Court of Law and the adoption, by the doctors, of a multidisciplinary approach led to a successful outcome and patient satisfaction. We hope that the new Involuntary Mental Health Care Act (WvGGZ) will bridge the current gap between WGBO and the Bopz.


Assuntos
Internação Compulsória de Doente Mental , Neoplasias Embrionárias de Células Germinativas/epidemiologia , Transtornos Paranoides/epidemiologia , Neoplasias Testiculares/epidemiologia , Internação Compulsória de Doente Mental/legislação & jurisprudência , Comorbidade , Tomada de Decisões , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Embrionárias de Células Germinativas/diagnóstico , Países Baixos , Transtornos Paranoides/diagnóstico , Satisfação do Paciente , Neoplasias Testiculares/diagnóstico , Resultado do Tratamento
5.
Eur J Gynaecol Oncol ; 35(5): 503-7, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25423693

RESUMO

BACKGROUND: Factors or signatures predicting response to chemotherapeutic agents are of great interest for breast cancer patient care. There is conflicting data regarding microtubule-associated protein tau as predictive marker of paclitaxel sensitivity. Paclitaxel plays an important role in the adjuvant and metastatic therapy of breast cancer. However, a substantial proportion of patients treated with paclitaxel do not derive benefit from this therapy. Therefore, evaluating potential predictive factors is increasingly important. The authors attempted to validate these findings in vitro utilizing the ATP tumorchemosensitivity assay (ATP-TCA). MATERIALS AND METHODS: The in vitro drug sensitivity to paclitaxel was evaluated in 48 fresh primary breast cancer specimens using the ATP-TCA. ATP-TCA results were analysed using the area under the curve (AUC) of growth inhibition. These results were correlated with the expression of tau mRNA measured by quantitative reverse transcriptase-polymerase chain reaction (RT-PCR). Tau was also compared between patients with progesterone receptor (PgR) positive and negative and estrogen receptor (ER) positive and negative breast cancer, respectively. RESULTS: The correlation of tau with the AUC for paclitaxel was weak, Spearman Rho was -0.267 with a p-value of 0.064. As described before, multiple regression analysis confirmed T-stage (p = 0.01) and PR status (p = 0.01) as independent predictors of paclitaxel chemosensitivity. Using multiple regression analysis and defining tau mRNA expression as dependent variable estrogen receptor status as measured by immunohistochemistry was a highly significant predictor for tau mRNA expression (p < 0.001). Grade (p = 0.002) as well as PgR expression (p < 0.001) were also found to be predictors of tau mRNA expression. CON- CLUSIONS: In the present data set the authors were not able to show that MAP-tau mRNA could predict benefit from the addition of a taxane to adjuvant chemotherapy. They found that ER expression is associated with tau protein expression. Estrogen gene transcription is reported to carry weak predictive significance for endocrine sensitivity, therefore it might be worth pursuing whether, tau mRNA could possibly be a predictor for endocrine therapy response.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Paclitaxel/uso terapêutico , Receptores de Estrogênio/análise , Proteínas tau/genética , Adulto , Idoso , Neoplasias da Mama/química , Neoplasias da Mama/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , RNA Mensageiro/análise
6.
Cell Death Dis ; 5: e1149, 2014 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-24675467

RESUMO

The antibody trastuzumab (Herceptin) has substantially improved overall survival for patients with aggressive HER2-positive breast cancer. However, about 70% of all treated patients will experience relapse or disease progression. This may be related to an insufficient targeting of the CD44(high)CD24(low) breast cancer stem cell subset, which is not only highly resistant to chemotherapy and radiotherapy but also a poor target for trastuzumab due to low HER2 surface expression. Hence, we explored whether the new antibody-drug conjugate T-DM1, which consists of the potent chemotherapeutic DM1 coupled to trastuzumab, could improve the targeting of these tumor-initiating or metastasis-initiating cells. To this aim, primary HER2-overexpressing tumor cells as well as HER2-positive and HER2-negative breast cancer cell lines were treated with T-DM1, and effects on survival, colony formation, gene and protein expression as well as antibody internalization were assessed. This revealed that CD44(high)CD24(low)HER2(low) stem cell-like breast cancer cells show high endocytic activity and are thus particularly sensitive towards the antibody-drug conjugate T-DM1. Consequently, preexisting CD44(high)CD24(low) cancer stem cells were depleted by concentrations of T-DM1 that did not affect the bulk of the tumor cells. Likewise, colony formation was efficiently suppressed. Moreover, when tumor cells were cocultured with natural killer cells, antibody-dependent cell-mediated cytotoxicity was enhanced, and EMT-mediated induction of stem cell-like properties was prevented in differentiated tumor cells. Thus our study reveals an unanticipated targeting of stem cell-like breast cancer cells by T-DM1 that may contribute to the clinical efficacy of this recently approved antibody-drug conjugate.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Maitansina/análogos & derivados , Células-Tronco Neoplásicas/patologia , Ado-Trastuzumab Emtansina , Adulto , Idoso , Anticorpos Monoclonais Humanizados/farmacologia , Anticorpos Monoclonais Humanizados/toxicidade , Citotoxicidade Celular Dependente de Anticorpos/efeitos dos fármacos , Antígenos CD/metabolismo , Autofagia/efeitos dos fármacos , Neoplasias da Mama/imunologia , Linhagem Celular Tumoral , Membrana Celular/efeitos dos fármacos , Membrana Celular/metabolismo , Células Clonais , Técnicas de Cocultura , Relação Dose-Resposta a Droga , Endocitose/efeitos dos fármacos , Feminino , Humanos , Células Matadoras Naturais/efeitos dos fármacos , Maitansina/farmacologia , Maitansina/uso terapêutico , Maitansina/toxicidade , Pessoa de Meia-Idade , Células-Tronco Neoplásicas/efeitos dos fármacos , Células-Tronco Neoplásicas/imunologia , Fenótipo , Receptor ErbB-2/metabolismo , Fatores de Tempo , Trastuzumab , Adulto Jovem
7.
Strahlenther Onkol ; 189(12): 1040-8, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24126938

RESUMO

BACKGROUND: Osteopontin-1 is a well characterized protein in many tumour entities. Multiple roles in the processes invasion, metastasis and angiogenesis of tumours are attributed to osteopontin-1. The putative role of osteopontin-1 has not been characterized for endometrial cancer. MATERIAL AND METHODS: We investigated multiple endometrial cancer cell lines for osteopontin-1 mRNA- and protein-expression. Osteopontin-1 dependent effects were analysed in vitro by siRNA inhibition. RESULTS: All endometrial cell lines expressed osteopontin-1. Expression of osteopontin-1 was successfully inhibited by specific siRNA. Cells with reduced osteopontin-1 expression showed decreased migration in the Boyden chamber assay and invasion was reduced in the wound-healing assay. Osteopontin-1 seems to play a role in apoptotic processes of endometrial cancer cells. Inhibition of osteopontin-1 expression was associated with an increased susceptibility for radiation therapy. CONCLUSION: Osteopontin-1 seems to play a role in endometrial cancer. Inhibition of osteopontin-1 expression leads to a higher susceptibility for radiation therapy. Our results suggest that a reduced expression of osteopontin-1 in endometrial cancer could inhibit the development of invasion and metastasis in these cells.


Assuntos
Apoptose/efeitos da radiação , Neoplasias do Endométrio/metabolismo , Neoplasias do Endométrio/radioterapia , Regulação Neoplásica da Expressão Gênica/efeitos da radiação , Osteopontina/metabolismo , Linhagem Celular Tumoral , Feminino , Humanos , Doses de Radiação
8.
Eur J Gynaecol Oncol ; 34(6): 572-4, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24601055

RESUMO

Gonadal dysgenesis (GD) is a rare congenital malformation that affects about one in 3,000 births. The authors present a case of a 17-year-old woman with primary amenorrhea and poor breast development. They conducted a laparoscopic surgery and bilaterally removed hypoplastic streak gonads. Histopathology of the ovaries revealed bilateral streak gonads with gonadoblastomas and a right-sided dysgerminoma.


Assuntos
Disgerminoma/complicações , Disgenesia Gonadal 46 XY/complicações , Neoplasias Ovarianas/complicações , Adolescente , Amenorreia/etiologia , Disgerminoma/patologia , Disgerminoma/cirurgia , Feminino , Gonadoblastoma/complicações , Gonadoblastoma/patologia , Gonadoblastoma/cirurgia , Humanos , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/cirurgia
9.
Oncol Rep ; 28(6): 2023-8, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22992944

RESUMO

Platinum resistance is the most crucial problem for treatment of ovarian cancer. Increasing evidence points towards AKT overexpression as a mechanistic reason for this clinical condition. The present study evaluates the effect of overexpression and downregulation of AKT on the sensitivity to cisplatin in a platinum-resistant human ovarian cancer cell line and the corresponding platinum-sensitive parental cell line. A2780 and A2780cis ovarian cancer cell lines were stably transfected with an AKT-sense and AKT-antisense plasmid. Successful transfection was evaluated by western blot analysis. Cytotoxic effects of cisplatin were evaluated by metabolic (MTT) and clonogenicity assays as well as by FACS analysis. AKT overexpression (confirmed by western blotting) converted platinum-sensitive A2780 into platinum-resistant cells as shown by MTT assay. Importantly, platinum resistance of A2780cis cells could be reversed by downregulation of AKT, as demonstrated by MTT and clonogenicity assays and FACS analysis. Our data provide strong evidence that cisplatin resistance in ovarian cancer is mediated by AKT overexpression and can be overcome by AKT downregulation, thus, providing a rationale for clinical phase II/III studies combining AKT inhibitors with cisplatin.


Assuntos
Antineoplásicos/farmacologia , Cisplatino/farmacologia , Resistencia a Medicamentos Antineoplásicos , Neoplasias Ovarianas/tratamento farmacológico , Proteínas Proto-Oncogênicas c-akt/metabolismo , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Regulação para Baixo , Feminino , Humanos , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/metabolismo , Compostos de Platina/farmacologia , Proteínas Proto-Oncogênicas c-akt/genética
10.
Anticancer Res ; 32(5): 2035-41, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22593485

RESUMO

BACKGROUND: D-116883 (Aeterna Zentaris GmbH, Frankfurt, Germany) is an orally effective drug that acts via inhibition of phosphatidylinositol 3-kinase (PI3K). The PI3K/AKT signal transduction pathway is involved in ovarian cancer tumorigenesis. Phosphatase and Tensin homolog (PTEN) loss and other activating mutations frequently contribute to the activation of this pathway. We tested whether D-116883 exerts cytostatic effects in in vitro models of ovarian cancer and analyzed the induced programmed cell death. MATERIALS AND METHODS: We evaluated the potency of D-116883 in four ovarian carcinoma cell lines with different cellular assays. The effects of D-116883 on cell proliferation was analysed by crystal-violet staining and tetrazolium salt [(3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; MTT] assay. The capacity for anchorage-independent growth was analyzed in two ovarian carcinoma cell lines without and with D-116883 addition by using the soft agar assay. Fluorescence activated cell sorting (FACS) cell cycle analyses were performed. Cells were incubated with multicaspase inhibitor benzyloxycarbonyl-val-ala-asp(OMe)-fluoromethylketone (zVAD) and inhibitor of necroptosis necrostatin. RESULTS: Growth inhibition occurred in all ovarian carcinoma cell lines studied (A2780, A2780cis, OAW42 and SKOV3) in a micromolar range (IC(50)<1 µM). By using soft agar assay, a reduced capacity for anchorage-independent growth, a hallmark of tumor cells, caused by D-116883 was demonstrated. Cell cycle analyses showed that D-116883 dose-dependently increased apoptotic cells. Multicaspase inhibitor zVAD and inhibitor of necroptosis necrostatin did not abrogate the growth-inhibiting effect of the compound. CONCLUSION: PI3K inhibitor D-116883 showed substantial cytotoxic effects in various in vitro models of ovarian cancer. Our results make D-116883 a good candidate for further ovarian cancer research including in vivo experiments.


Assuntos
Antineoplásicos/farmacologia , Neoplasias Ovarianas/tratamento farmacológico , Inibidores de Fosfoinositídeo-3 Quinase , Clorometilcetonas de Aminoácidos/farmacologia , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Relação Dose-Resposta a Droga , Feminino , Humanos , Imidazóis/farmacologia , Indóis/farmacologia , Neoplasias Ovarianas/patologia , Fosforilação , Proteínas Proto-Oncogênicas c-akt/antagonistas & inibidores , Proteínas Proto-Oncogênicas c-akt/metabolismo
11.
Anticancer Res ; 32(5): 2063-8, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22593489

RESUMO

BACKGROUND: AEZS-115 (Aeterna Zentaris GmbH, Frankfurt/M, Germany) is an orally active peptidomimetic antagonist of gonadotropin-releasing hormone (GnRH). In various tumors, an autocrine growth-promoting loop has been described for GnRH. The current study evaluates the antitumor activity and mechanism of action of AEZS-115 in models of ovarian and endometrial cancer. MATERIALS AND METHODS: Human A2780, Acis2780, OAW-42, Ovcar-3, SKOV-3, Hec1A and Ishikawa cells were analyzed for GnRH receptor expression by reverse transcription polymerase chain reaction (RT-PCR). These cell lines were incubated with AEZS-115 at 1, 10 and 100 µM for 24 h, 48 h, and 72 h and the number of viable cells was determined. Fluorescence activated cell sorting (FACS) cell cycle analyses were performed with increasing concentrations of AEZS-115. Co-treatment experiments of cancer cells with GnRH antagonist cetrorelix and peptidomimetic GnRH antagonist AESZ-115 were carried out. RESULTS: A2780, Acis2780, OAW-42, Ovcar-3, SKOV-3, Hec1A and Ishikawa cells expressed GnRH receptors as demonstrated by RT-PCR. GnRH antagonist AEZS-115 inhibited growth of all cell lines in a dose- and time-dependent manner. Half maximal inhibitory concentration (IC(50)) values at 48 h of incubation were between 7 and 17.5 µM and for 72 h between 4.5 and 12.5 µM. IC(50) values for ovarian and endometrial cancer cells were rather similar. These results were obtained by tetrazolium salt [(3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; MTT] assay and confirmed by additional crystal violet staining. Cell cycle FACS analysis revealed that AEZS-115 dose-dependently increased the fraction of apoptotic cells. Co-treatment experiments carried out with AEZS-115 and peptidic GnRH-antagonist cetrorelix suggest that the antitumor effect of AEZS-115 is not mediated by blockade of the GnRH receptor. CONCLUSION: GnRH antagonist AEZS-115 exhibited substantial antitumor activity in ovarian as well as endometrial cancer cell lines. However, this antitumor effect was not mediated by the tumoral GnRH receptors. To identify the mechanism of action of this compound, further research is warranted. Its in vitro antitumor activity makes AEZS-115 a promising candidate for in vivo studies of ovarian and endometrial cancer.


Assuntos
Neoplasias do Endométrio/tratamento farmacológico , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Neoplasias Ovarianas/tratamento farmacológico , Peptidomiméticos/farmacologia , Clorometilcetonas de Aminoácidos/farmacologia , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Neoplasias do Endométrio/patologia , Feminino , Hormônio Liberador de Gonadotropina/análogos & derivados , Hormônio Liberador de Gonadotropina/farmacologia , Humanos , Neoplasias Ovarianas/patologia , RNA Mensageiro/análise , Receptores LHRH/genética
12.
Prostate Cancer Prostatic Dis ; 15(1): 28-35, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22249290

RESUMO

BACKGROUND: Emerging data suggest that obesity increases the risk of aggressive prostate cancer (PC), but the mechanisms underlying this relationship remain to be fully elucidated. Oxidative stress (OS) is a key process in the development and progression of PC. Adiponectin, an adipocyte-specific hormone, circulates at relatively high levels in healthy humans, but at reduced levels in obese subjects. Moreover, case-control studies also document lower levels of serum adiponectin in PC patients compared with healthy individuals. METHODS: Human 22Rv1 and DU-145 PC cell lines were examined for the generation of OS and detoxification of reactive oxygen species after treatment with adiponectin. Normality was confirmed using the Shapiro-Wilk test and results were analyzed using a one-way analysis of variance. RESULTS: We demonstrate that adiponectin increased cellular anti-oxidative defense mechanisms and inhibited OS in a significant and dose-dependent manner. We show that adiponectin treatment decreased the generation of superoxide anion in both cell lines, whereas the transcript levels of NADPH oxidase (NOX)2 and NOX4 increased. We also found indications of an overall anti-oxidative effect, as the total anti-oxidative potential, catalase activity and protein levels, and manganese superoxide dismutase protein levels increased significantly (P<0.05) in both cell lines after treatment with adiponectin. CONCLUSION: Lower levels of adiponectin in obese individuals may result in higher levels of prostatic OS, which may explain the clinical association between obesity, hypoadiponectinemia and PC.


Assuntos
Adiponectina/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Adenocarcinoma , Adenilato Quinase/metabolismo , Catalase/metabolismo , Linhagem Celular Tumoral , Indução Enzimática/efeitos dos fármacos , Expressão Gênica/efeitos dos fármacos , Humanos , Masculino , NADPH Oxidases/genética , NADPH Oxidases/metabolismo , Fosforilação , Neoplasias da Próstata , Receptores de Adiponectina/metabolismo , Transdução de Sinais , Superóxido Dismutase/metabolismo , Superóxidos/metabolismo
13.
Eur J Gynaecol Oncol ; 32(4): 427-30, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21941969

RESUMO

Pleomorphic adenoma (PA) is a benign mixed tumor found commonly in the salivary glands but rarely in the breast. PA might be misinterpreted clinically and pathologically as a malignant tumor. The differential diagnoses include fibroadenoma, phyllodes tumor and metaplastic carcinoma. Metaplastic carcinoma is the most important entitiy with respect to differential diagnoses, as surgical overtreatment, i.e., mastectomy may be the result. We describe one of the first cases of PA initially misdiagnosed as metaplastic carcinoma (osteoid-chondroid type) in a preoperative stereotactic biopsy and review the literature regarding this entity.


Assuntos
Adenoma Pleomorfo/patologia , Adenoma Pleomorfo/cirurgia , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Carcinoma/patologia , Carcinoma/cirurgia , Diagnóstico Diferencial , Erros de Diagnóstico , Feminino , Humanos , Imuno-Histoquímica , Excisão de Linfonodo , Pessoa de Meia-Idade
14.
Neuropsychobiology ; 63(3): 169-76, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21228609

RESUMO

BACKGROUND: Depressive disorder after myocardial infarction (MI) is associated with increased cardiac morbidity and mortality. Immune activity such as inflammation might be implicated as an underlying mechanism. The purpose of this study is to investigate whether the response to an antidepressant in post-MI depression is associated with changes of inflammatory markers in serum. METHODS: In a double-blind placebo-controlled study with mirtazapine 30 mg/day (50 patients), the antidepressive effect was related to immune activation parameters. The cytokines interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α), the soluble cytokine receptors sIL-6R, sTNF-R1 and sTNF-R2, and the inflammation-sensitive plasma proteins C-reactive protein and neopterin were assessed. RESULTS: Subgroup analyses revealed a highly significant correlation of pronounced sTNF-R1 increase with a decrease in depressive symptoms in antidepressant responders. CONCLUSION: Significant effects on inflammation accompany the therapeutic efficacy of mirtazapine in contrast to the therapeutic efficacy of placebo and the nontherapeutic efficacy of mirtazapine.


Assuntos
Antidepressivos Tricíclicos/uso terapêutico , Depressão/tratamento farmacológico , Depressão/imunologia , Mianserina/análogos & derivados , Infarto do Miocárdio/complicações , Infarto do Miocárdio/imunologia , Receptores Tipo I de Fatores de Necrose Tumoral/efeitos dos fármacos , Adulto , Idoso , Antidepressivos Tricíclicos/farmacologia , Depressão/sangue , Depressão/complicações , Feminino , Humanos , Mediadores da Inflamação/sangue , Masculino , Mianserina/farmacologia , Mianserina/uso terapêutico , Pessoa de Meia-Idade , Mirtazapina , Infarto do Miocárdio/sangue , Infarto do Miocárdio/tratamento farmacológico , Receptores Tipo I de Fatores de Necrose Tumoral/sangue
15.
Br J Cancer ; 103(5): 693-700, 2010 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-20683447

RESUMO

BACKGROUND: Screening is an unsolved problem for ovarian cancer (OvCA). As late detection is equivalent to poor prognosis, we analysed whether OvCA patients show diagnostically meaningful microRNA (miRNA) patterns in blood cells. METHODS: Blood-borne whole miRNome profiles from 24 patients with OvCA and 15 age- and sex-matched healthy controls were biostatistically evaluated. RESULTS: Student's t-test revealed 147 significantly deregulated miRNAs before and 4 after Benjamini-Hochberg adjustment. Although these included miRNAs already linked to OvCA (e.g., miR-16, miR-155), others had never before been connected to specific diseases. A bioinformatically calculated miRNA profile allowed for discrimination between blood samples of OvCA patients and healthy controls with an accuracy of >76%. When only cancers of the serous subtype were considered and compared with an extended control group (n=39), accuracy, specificity and sensitivity all increased to >85%. CONCLUSION: Our proof-of-principle study strengthens the hypothesis that neoplastic diseases generate characteristic miRNA fingerprints in blood cells. Still, the obtained OvCA-associated miRNA pattern is not yet sensitive and specific enough to permit the monitoring of disease progression or even preventive screening. Microarray-based miRNA profiling from peripheral blood could thus be combined with other markers to improve the notoriously difficult but important screening for OvCA.


Assuntos
Biomarcadores Tumorais/sangue , MicroRNAs/sangue , Neoplasias Ovarianas/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Detecção Precoce de Câncer , Feminino , Humanos , Análise em Microsséries , Pessoa de Meia-Idade , Sensibilidade e Especificidade
16.
Anticancer Res ; 30(5): 1559-64, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20592341

RESUMO

INTRODUCTION: The polycomb group (PcG) proteins form chromatin-modifying complexes that are commonly deregulated in cancer. The PcG protein BMI-I is overexpressed by various tumours and thus may contribute to malignant transformation. The current study investigated the expression of BMI-I in human specimens of breast, ovarian, endometrial and cervical cancer. MATERIALS AND METHODS: Expression of BMI-I was evaluated in human ovarian cancer samples by Western blot analysis and immunohistochemistry (IHC) and compared to healthy ovarian tissue. BMI-I expression in human specimens of breast, endometrial and cervical cancer was evaluated by IHC and then compared with the respective benign tissues. RESULTS: BMI-I was significantly (p<0.05) overexpressed in human breast, ovarian, endometrial and cervical cancer specimens as compared to benign controls. BMI-I expression was also more pronounced in the ovarian cancer samples as demonstrated by Western blot analysis. In human breast cancer samples, BMI-I expression was most pronounced in the invasion front of the tumour. CONCLUSION: The current study showed for the first time that the BMI-I protein is significantly overexpressed in ovarian, endometrial and cervical cancer and may thus be a potential target for novel antitumor therapies.


Assuntos
Neoplasias da Mama/metabolismo , Neoplasias do Endométrio/metabolismo , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Proteínas Nucleares/biossíntese , Proteínas Nucleares/fisiologia , Neoplasias Ovarianas/metabolismo , Proteínas Proto-Oncogênicas/biossíntese , Proteínas Proto-Oncogênicas/fisiologia , Proteínas Repressoras/biossíntese , Proteínas Repressoras/fisiologia , Neoplasias do Colo do Útero/metabolismo , Antineoplásicos/farmacologia , Diferenciação Celular , Inibidor p16 de Quinase Dependente de Ciclina , Feminino , Humanos , Imuno-Histoquímica/métodos , Antígeno Ki-67/biossíntese , Proteínas de Neoplasias/metabolismo , Fenótipo , Complexo Repressor Polycomb 1
17.
Anticancer Res ; 30(5): 1653-9, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20592357

RESUMO

BACKGROUND: Malignant tumors metabolize glucose to lactate even in the presence of oxygen (aerobic glycolysis). The metabolic switch from oxidative glycolysis to non-oxidative fermentation of glucose and proteins performed by the tumor cells seems to be associated with TKTL1 and pAkt overexpression. Therefore the aim of the present study was to investigate the expression of TKTL1 and pAkt in human specimens of endometrial cancer as compared to benign endometrium. Additionally, expression of the glucose transporter GLUT1 was also investigated as aerobic glycolysis is associated with an increased need for glucose. MATERIALS AND METHODS: Levels of TKTL1, pAkt, and GLUT1 expression were immunhistochemically evaluated on paraffin embedded biopsy material from 10 benign and 41 malignant endometrial tissue samples. TKTL1 mRNA levels in the endometrial cancer cell lines Ishikawa and HEC-1A were evaluated by RT-PCR. RESULTS: Expression of TKTL1, GLUT1 and pAKT was significantly increased in endometrial carcinomas as compared to benign endometrial tissue. There was a significantly weaker TKTL1 expression in highly differentiated G1 tumors. In the human endometrial cancer cell lines Ishikawa and HEC-1A, TKTL1 mRNA was clearly detectable. CONCLUSION: The levels of TKTL1, GLUT1 and pAKT expression point to the glycolytic phenotype of malignant endometrial tissue. Given the pronounced TKTL1 expression across all different subtypes of endometrial cancer, this protein could serve as a target for future cancer treatments.


Assuntos
Neoplasias do Endométrio/metabolismo , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Transcetolase/biossíntese , Idoso , Linhagem Celular Tumoral , Feminino , Glucose/metabolismo , Transportador de Glucose Tipo 1/metabolismo , Glicólise , Humanos , Imuno-Histoquímica/métodos , Pessoa de Meia-Idade , Oxigênio/química , RNA Mensageiro/metabolismo
18.
Br J Cancer ; 102(11): 1645-53, 2010 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-20461080

RESUMO

BACKGROUND: LIM and SH3 protein 1 (LASP-1) is a nucleo-cytoplasmatic signalling protein involved in cell proliferation and migration and is upregulated in breast cancer in vitro studies have shown that LASP-1 might be regulated by prostate-derived ETS factor (PDEF), p53 and/or LASP1 gene amplification. This current study analysed the prognostic significance of LASP-1 on overall survival (OS) in 177 breast cancer patients and addressed the suggested mechanisms of LASP-1-regulation. METHODS: Nucleo-cytoplasmatic LASP-1-positivity of breast carcinoma samples was correlated with long-term survival, clinicopathological parameters, Ki67-positivity and PDEF expression. Rate of LASP1 amplification was determined in micro-dissected primary breast cancer cells using quantitative RT-PCR. Cell-phase dependency of nuclear LASP-1-localisation was studied in synchronised cells. In addition, LASP-1, PDEF and p53 expression was compared in cell lines of different tumour entities to define principles for LASP-1-regulation. RESULTS: We showed that LASP-1 overexpression is not due to LASP1 gene amplification. Moreover, no correlation between p53-mutations or PDEF-expression and LASP-1-status was observed. However, nuclear LASP-1-localisation in breast carcinomas is increased during proliferation with peak in G2/M-phase and correlated significantly with Ki67-positivity and poor OS. CONCLUSION: Our results provide evidence that nuclear LASP-1-positivity may serve as a negative prognostic indicator for long-term survival of breast cancer patients.


Assuntos
Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Neoplasias da Mama/mortalidade , Carcinoma/mortalidade , Núcleo Celular/metabolismo , Proteínas do Citoesqueleto/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Carcinoma/diagnóstico , Carcinoma/genética , Carcinoma/metabolismo , Linhagem Celular Tumoral , Proteínas do Citoesqueleto/genética , Feminino , Amplificação de Genes/fisiologia , Humanos , Proteínas com Domínio LIM , Pessoa de Meia-Idade , Prognóstico , Análise de Sobrevida , Sobreviventes/estatística & dados numéricos , Fatores de Tempo , Distribuição Tecidual
19.
Br J Clin Psychol ; 49(Pt 4): 507-16, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20021730

RESUMO

OBJECTIVE: To validate the Hospital Anxiety and Depression Scale (HADS) and the Beck Depression Inventory (BDI) for use in patients with end-stage renal disease (ESRD) and to compare the outcome of both screening measures with each other. DESIGN: Cross-sectional and between-subjects design. The independent variable was the diagnosis depression by the Mini International Neuropsychiatric Interview (MINI). The dependent variables were the HADS and BDI total score. METHODS: All 130 patients with ESRD who were treated with haemodialysis (HD) or peritoneal dialyses in the Sint Lucas Andreas Hospital in Amsterdam were eligible for this study and were asked to fill out both HADS and BDI. The outcomes of both rating scales were compared with the diagnosis major depressive episode based on the MINI, which was seen as the gold standard. Receiver operating characteristic curves were used to choose optimal cut-off values. RESULTS: Of 62 enrolled subjects, 21 (34%) were diagnosed with a depressive disorder. Optimal cut-off values were ≥12 (HADS) and ≥13 (BDI). Sensitivity was 81.0% (HADS) and 75.0% (BDI). Specificity was 90.2% for both. CONCLUSIONS: Both HADS and BDI are valid screening instruments for the diagnosis depression in ESRD patients but there is no statistical difference found between both rating scales.


Assuntos
Transtorno Depressivo Maior/diagnóstico , Falência Renal Crônica/psicologia , Inventário de Personalidade/estatística & dados numéricos , Papel do Doente , Idoso , Estudos Transversais , Transtorno Depressivo Maior/epidemiologia , Transtorno Depressivo Maior/psicologia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Falência Renal Crônica/terapia , Masculino , Programas de Rastreamento/estatística & dados numéricos , Pessoa de Meia-Idade , Países Baixos , Diálise Peritoneal/psicologia , Psicometria/estatística & dados numéricos , Curva ROC , Diálise Renal/psicologia , Reprodutibilidade dos Testes
20.
Eur J Gynaecol Oncol ; 30(4): 449-51, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19761144

RESUMO

Triple negative breast cancer is a recently defined subgroup of tumors which do not express receptors for estrogen or progesterone and which do not show any overexpression of HER2 receptors. Tumors with these histopathologic features have an unfavorable prognosis and at present there is no standard chemotherapy regimen available. However, experimental studies and very recently some clinical data showed a benefit from platinum-based chemotherapy. We treated a 52-year-old caucasian female with metastatic triple negative breast cancer. She suffered from extensive liver disease resistant to taxane treatment and yttrium radiotherapy. Cisplatin/ifosfamide (12 cycles) induced regression of the liver metastasis from over 30 cm to 6 cm as revealed by CT scan. Dose-limiting toxicity was impairment of renal function and pancytopenia. The patient has now been stable for over ten months on a metronomic regimen of oral cyclophosphamide. This case report adds to recent evidence suggesting good clinical benefits of platinum-based regimens in early and advanced triple negative breast cancers.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/patologia , Cisplatino/administração & dosagem , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/secundário , Neoplasias da Mama/metabolismo , Feminino , Humanos , Neoplasias Hepáticas/patologia , Pessoa de Meia-Idade , Receptor ErbB-2/análise , Receptores de Estrogênio/análise , Receptores de Progesterona/análise
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