Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 303
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
J Eur Acad Dermatol Venereol ; 37(9): 1799-1810, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37210651

RESUMO

BACKGROUND: Monoclonal antibodies, such as cemiplimab and pembrolizumab, against the programmed death receptor (PD)-1 have become the current standard of care and first-line treatment of advanced cutaneous squamous cell carcinoma (cSCC), proving remarkable clinical benefit and acceptable safety. OBJECTIVES: To assess efficacy and safety of the anti-PD-1 antibody nivolumab in patients with locally advanced and metastatic cSCC. METHODS: Patients received open-label nivolumab 240 mg intravenously every 2 weeks for up to 24 months. Patients with concomitant haematological malignancies (CHMs), either non-progressing or stable under active therapy, were eligible for inclusion. RESULTS: Of 31 patients with a median age of 80 years, 22.6% of patients achieved an investigator assessed complete response, resulting in an objective response rate (ORR) of 61.3% and a disease control rate (DCR) of 64.5%. Progression-free survival (PFS) was 11.1 months, and the median overall survival (OS) was not reached after 24 weeks of therapy. Median follow-up was 23.82 months. Subgroup analysis of the CHM cohort (n = 11; 35%) revealed an ORR of 45.5%, a DCR of 54.5%, a median PFS of 10.9 months, and median OS of 20.7 months. Treatment related adverse events were reported in 58.1% of all patients (19.4% grade 3, the remaining grade 1 or 2). PD-L1 expression and CD-8+ T-cell infiltration did not significantly correlate with clinical response, although a trend towards a shorter PFS of 5.6 months was observed with PD-L1 negativity and low CD8+ intratumoral infiltration. CONCLUSION: This study demonstrated robust clinical efficacy of nivolumab in patients with locally advanced and metastatic cSCCs and a tolerability comparable to data of other anti-PD-1 antibodies. Favourable outcomes were obtained despite involving the oldest hitherto reported study cohort for anti-PD-1 antibodies and a significant proportion of CHM patients prone to high risk tumours and an aggressive course otherwise typically excluded from clinical trials.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Hematológicas , Neoplasias Cutâneas , Humanos , Idoso de 80 Anos ou mais , Nivolumabe/uso terapêutico , Nivolumabe/efeitos adversos , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/induzido quimicamente , Antígeno B7-H1 , Neoplasias Cutâneas/tratamento farmacológico , Neoplasias Cutâneas/induzido quimicamente
2.
Cancer Immunol Immunother ; 70(5): 1451-1464, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33180184

RESUMO

INTRODUCTION: Gastrointestinal (GI) malignancies, such as cholangiocarcinoma, pancreatic carcinoma, and metastatic colorectal carcinoma, have a poor prognosis and effective therapeutic approaches are still challenging. Checkpoint inhibition with PD-1 or PDL-1 antibodies revealed promising results in different tumor entities; however, only few patients with GI tumors can potentially benefit from PD1/PDL1 inhibiting immunotherapy. Further immunotherapeutic strategies for GI malignancies are urgently needed. The aim of this study was to demonstrate that in vitro activation of the immune checkpoint CD40/CD40L can improve DC action towards bile duct, pancreas, and colorectal carcinoma. METHODS: Human DC were isolated from buffy coats from healthy donors, pulsed with tumor lysates and then transduced with adenoviruses encoding human CD40L (Ad-hCD40L). Using transwell assays, the effects of (m)CD40L on DC immunoactivation compared to (s)CD40L were analyzed. Surface marker and cytokine/chemokine expression were measured by flow cytometry, ELISA and cytokine arrays. Capacity of Ad-hCD40L-transduced DC to induce tumor-specific effector cells was tested using MTT proliferation assay and cytotoxicity assays. Apoptosis induction on tumor cells after culturing with supernatants of Ad-hCD40L-transduced DC was analyzed by flow cytometry. RESULTS: Ad-hCD40L transduction induced a high expression of (s)CD40L and (m)CD40L on DC and seemed to induce a strong cellular CD40/CD40L interaction among DC, leading to the formation of cell aggregates. Due to the CD40/CD40L interaction, a significant upregulation of DC maturation markers and a Th1-shift on cytokines/chemokines in the supernatant of DC were achieved. Interestingly, a pure Th1-shift was only achieved, when a cellular CD40/CD40L interaction among DC took place. (s)CD40L induced almost no upregulation of maturation markers and rather resulted in a Th2-cytokine expression, such as IL-10. Correspondingly, (m)CD40L-expressing DC led to significant proliferation and stimulation of tumor-specific effector cells with increased cytotoxicity towards pancreatic, bile duct and colorectal tumor cells. Supernatants of Ad-hCD40L-transduced DC could also induce apoptosis in the different tumor cells in vitro. CONCLUSION: Stimulation of the immune checkpoint CD40L/CD40 by endogenous expression of (m)CD40L provokes a cellular interaction, which increases the immunomodulatory capacity of DC. A Th1 cytokine/chemokine expression is induced, leading to a significant proliferation and enabling cytotoxicity of effector cells towards human bile duct, pancreatic and colorectal tumor cells. The present data point to the promising approach for DC-based immunotherapy of gastrointestinal malignances by activating the CD40/CD40L immune checkpoint.


Assuntos
Colangiocarcinoma/imunologia , Neoplasias Colorretais/imunologia , Células Dendríticas/imunologia , Imunoterapia/métodos , Neoplasias Pancreáticas/imunologia , Linfócitos T Citotóxicos/imunologia , Antígenos CD40/genética , Antígenos CD40/metabolismo , Ligante de CD40/genética , Ligante de CD40/metabolismo , Diferenciação Celular , Linhagem Celular Tumoral , Proliferação de Células , Citocinas/metabolismo , Citotoxicidade Imunológica , Humanos , Ativação Linfocitária , Transdução de Sinais , Células Th1/imunologia , Equilíbrio Th1-Th2 , Células Th2/imunologia
3.
Antonie Van Leeuwenhoek ; 114(12): 2047-2063, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34609626

RESUMO

The waste and by-products of the soybean industry could be an economic source of nutrients to satisfy the high nutritional demands for the cultivation of lactic acid bacteria. The aims of this work were to maximize the biomass production of Lacticaseibacillus paracasei 90 (L90) in three culture media formulated from an effluent derived from soy protein concentrate production and to assess the effects these media have on the enzymatic activity of L90, together with their influence on its fermentation profile in milk. The presence of essential minerals and fermentable carbohydrates (sucrose, raffinose, and stachyose) in the effluent was verified. L90 reached high levels of microbiological counts (∼ 9 log cfu mL-1) and dry weight (> 1 g L-1) on the three optimized media. Enzymatic activities (lactate dehydrogenase and ß-galactosidase) of L90, and its metabolism of lactose and citric acid, as well as lactic acid and pyruvic acid production in milk, were modified depending on the growth media. The ability of the L90 to produce the key flavour compounds (diacetyl and acetoin) was maintained or improved by growing in the optimized media in comparison with MRS.


Assuntos
Minerais , Proteínas de Soja , Biomassa , Meios de Cultura , Fermentação
4.
BMC Cancer ; 18(1): 936, 2018 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-30268109

RESUMO

BACKGROUND: Cancer research has made great progress in the recent years. With the increasing number of options in diagnosis and therapy the implementation of tumorboards (TUBs) has become standard procedure in the treatment of cancer patients. Adherence tests on tumor board decisions are intended to enable quality assurance and enhancement for work in tumor boards in order to continuously optimize treatment options for cancer patients. METHODS: Subject of this study was the adherence of the recommendations made in three of 14 tumorboards, which take place weekly in the Center for Integrated Oncology (CIO) at the University Hospital Bonn. In total, therapy recommendations of 3815 patient cases were checked on their implementation. A classification into four groups has been made according to the degree of implementation. A second classification followed regarding the reasons for differences between the recommendation and the therapy which the patient actually received. RESULTS: The study showed that 80.1% of all recommendations in the three TUBs were implemented. 8.3% of all recommendations showed a deviance. Most important reasons for the deviances were patient wish (36.5%), patient death (26%) and doctoral decision, due to the patient's comorbidities or side effects of the treatment (24.1%).Interestingly, deviance in all three tumor boards in total significantly decreased over time. CONCLUSIONS: Aim of the study was to clarify the use of tumor boards and find approaches to make them more efficient. Based on the results efficiency might be optimized by increased consideration of patients` preferences, improved presentation of patient-related data, more detailed documentation and further structuring of the tumor board meetings.


Assuntos
Fidelidade a Diretrizes , Oncologia Integrativa , Pesquisa Interdisciplinar/organização & administração , Neoplasias/terapia , Alemanha , Humanos
5.
Bioorg Med Chem ; 26(13): 3825-3836, 2018 07 30.
Artigo em Inglês | MEDLINE | ID: mdl-30017114

RESUMO

Pancreatic cancer poorly responds to available drugs, and finding novel approaches to target this cancer type is of high significance. Here, based on a common property of pancreatic cancer cells to express somatostatin receptors (SSTR), we designed drug conjugates with novel somatostatin-derived cyclic peptides (SSTp) with broad selectivity towards SSTR types to facilitate drug targeting of the pancreatic cancer cells specifically. Uptake of our newly designed SSTps was facilitated by SSTRs expressed in the pancreatic cancers, including SSTR2, SSTR3, SSTR4 and SSTR5. Three major drugs were conjugated to our best SSTps that served as delivery vehicles, including Camptothecin (CPT), Combretastatin-4A (COMB) and Azatoxin (AZA). All designed drug conjugates demonstrated penetration to pancreatic cancer cell lines, and significant toxicity towards them. Furthermore, the drug conjugates specifically accumulated in tumors in the animal xenograft model, though some accumulation was also seen in kidney. Overall these findings lay the basis for development of novel drug series that could target the fatal pancreatic cancer.


Assuntos
Antineoplásicos/síntese química , Peptídeos Cíclicos/química , Somatostatina/química , Animais , Antineoplásicos/metabolismo , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Camptotecina/química , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Humanos , Indóis/química , Rim/metabolismo , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/metabolismo , Neoplasias Pancreáticas/patologia , Peptídeos Cíclicos/síntese química , Receptores de Somatostatina/antagonistas & inibidores , Receptores de Somatostatina/genética , Receptores de Somatostatina/metabolismo , Estilbenos/química , Distribuição Tecidual , Ensaios Antitumorais Modelo de Xenoenxerto
6.
Br J Dermatol ; 177(3): 854-857, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27718538

RESUMO

Whether or not pregnancy favours the occurrence and growth of melanoma is a source of controversy in the literature. Several case reports have shown dramatic courses of diseases in pregnancy. We present a case of a 36-year-old woman with multiple naevi with one melanoma detected in 2009 in the first trimester and a second primary melanoma in 2010 in the third trimester of her pregnancy. Both lesions have been present for at least 5 years and have been interpreted as dysplastic naevi. Because of their growth during pregnancy they were removed. No metastatic disease has been found between 2010 and early 2017. This case shows the difficulty of detecting melanomas in pregnancy, particularly when they mimic dysplastic naevi in women with multiple naevi, who are at higher risk. Therefore, we suggest that pregnant women with numerous naevi should be precautious of any changes of their naevi in size, shape and colour. Every suspicious lesion should be either excised or documented/monitored carefully, for example with sequential digital dermoscopy imaging.


Assuntos
Melanoma/patologia , Nevo Pigmentado/patologia , Complicações Neoplásicas na Gravidez/patologia , Neoplasias Cutâneas/patologia , Adulto , Síndrome do Nevo Displásico/patologia , Feminino , Humanos , Gravidez , Primeiro Trimestre da Gravidez , Terceiro Trimestre da Gravidez
7.
Horm Metab Res ; 49(2): 77-85, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28099977

RESUMO

Neuroendocrine tumours (NET) are rare neoplasms, but the incidence is permanently increasing. Most of the NETs are slow proliferating and clinically silent, and for that reason, they are often diagnosed at a stage with advanced disease. The complexity and diversity of the NET-biology require the treatment of patients in specialised centres to guarantee a qualified, multidisciplinary treatment planning. At our institution, we developed an interdisciplinary model for the assessment and treatment of NET. The aim was to adapt the guidelines to the clinical practice, exchange of current knowledge, and a tailored approach to the individual patient. In our team are included medical professionals from pathology, radiology, oncology, gastroenterology, oncological surgery, and nuclear medicine. In this paper, we describe step-by-step a procedural algorithm for the management of patients with neuroendocrine tumours, focusing on midgut-NETs in terms of therapy.


Assuntos
Tumores Neuroendócrinos/terapia , Diagnóstico por Imagem , Seguimentos , Humanos , Estadiamento de Neoplasias , Tumores Neuroendócrinos/classificação , Tumores Neuroendócrinos/diagnóstico , Tumores Neuroendócrinos/patologia
8.
Horm Metab Res ; 48(3): 196-200, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25951321

RESUMO

Klotho is a transmembrane protein, expressed mainly in the kidneys and the choroid plexus. The extracellular domain of klotho is composed of 2 internal repeats, KL1 and KL2, which can be cleaved and act as hormones. Klotho-deficient mice develop a phenotype resembling human aging. Laboratory and clinical data suggest a favorable effect of klotho on atherosclerosis, high blood pressure, and metabolic syndrome. Therefore, we aimed to study the effect of klotho treatment on atherogenesis, blood pressure, and metabolic parameters in experimental rodent models. Fructose-fed Sprague-Dawley rats (metabolic syndrome model) and apolipoprotein E (apoE -/-) knock-out mice (atherosclerosis model) were treated with either klotho or its active domain KL1. In apoE -/- mice, klotho unexpectedly elevated plasma cholesterol and triglyceride levels compared to the control group. Yet, it did not increase the aortic sinus atherosclerotic lesion area. In fructose-fed Sprague-Dawley rats, klotho treatment did not lower blood pressure or plasma triglyceride levels. Although KL1 treatment did not lower blood pressure or plasma insulin levels, it significantly reduced the elevation of total plasma triglyceride levels (from 2.3-fold to 1.6-fold, p<0.05) due to lower triglyceride-rich VLDL levels. Klotho did not show any beneficial effects on atherosclerosis and components of the metabolic syndrome and was associated with increased plasma cholesterol levels. On the other hand, treatment with KL1 may lower plasma triglyceride levels independent of insulin. Additional studies are required in order to decipher the complex role of klotho and its active domains in the regulation of plasma lipid levels.


Assuntos
Aterosclerose/tratamento farmacológico , Aterosclerose/fisiopatologia , Pressão Sanguínea/efeitos dos fármacos , Glucuronidase/uso terapêutico , Animais , Apolipoproteínas E/deficiência , Apolipoproteínas E/metabolismo , Aterosclerose/complicações , Dieta , Modelos Animais de Doenças , Glucuronidase/química , Glucuronidase/farmacologia , Humanos , Proteínas Klotho , Metabolismo dos Lipídeos/efeitos dos fármacos , Masculino , Síndrome Metabólica/complicações , Síndrome Metabólica/tratamento farmacológico , Camundongos Endogâmicos C57BL , Domínios Proteicos , Ratos Sprague-Dawley , Seio Aórtico/efeitos dos fármacos , Seio Aórtico/patologia , Triglicerídeos/metabolismo
9.
World J Surg Oncol ; 14(1): 254, 2016 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-27687517

RESUMO

BACKGROUND: We evaluated the prognostic significance and universal validity of the total number of evaluated lymph nodes (ELN), number of positive lymph nodes (PLN), lymph node ratio (LNR), and log odds of positive lymph nodes (LODDS) in a relatively large and homogenous cohort of surgically treated pancreatic ductal adenocarcinoma (PDAC) patients. METHODS: Prospectively accrued data were retrospectively analyzed for 282 PDAC patients who had pancreaticoduodenectomy (PD) at our institution. Long-term survival was analyzed according to the ELN, PLN, LNR, and LODDS. RESULTS: Of these patients, 168 patients (59.5 %) had LN metastasis (N1). Mean ELN and PLN were 13.5 and 1.6, respectively. LN positivity correlated with a greater number of evaluated lymph nodes; positive lymph nodes were identified in 61.4 % of the patients with ELN ≥ 13 compared with 44.9 % of the patients with ELN < 13 (p = 0.014). Median overall survival (OS) and 5-year OS rate were higher in N0 than in N1 patients, 22.4 vs. 18.7 months and 35 vs. 11 %, respectively (p = 0.008). Mean LNR was 0.12; 91 patients (54.1 %) had LNR < 0.3. Among the N1 patients, median OS was comparable in those with LNR ≥ 0.3 vs. LNR < 0.3 (16.7 vs. 14.1 months, p = 0.950). Neither LODDS nor various ELN and PLN cutoff values provided more discriminative information within the group of N1 patients. CONCLUSIONS: Our data confirms that lymph node positivity strongly reflects PDAC biology and thus patient outcome. While a higher number of evaluated lymph nodes may provide a more accurate nodal staging, it does not have any prognostic value among N1 patients. Similarly, PLN, LNR, and LODDS had limited prognostic relevance.

10.
Br J Dermatol ; 170(5): 1065-72, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24641327

RESUMO

BACKGROUND: Recent research suggests that scalp naevi differ with respect to their epidemiology, patient characteristics and morphological patterns, but currently a classification of scalp naevi is lacking. OBJECTIVES: To investigate the prevalence, together with clinical and dermoscopic features, of scalp naevi detected in persons attending a skin cancer screening programme, and to elaborate a classification of scalp naevi based on their most common morphological patterns. METHODS: Participants were recruited during the melanoma prevention programme 'sun watch' of Austrian Cancer Aid in Styria. Each participant received a clinical and dermoscopic total-body skin examination including the scalp. For each participant, demographics and clinical characteristics including number of scalp naevi were recorded. Clinical and dermoscopic photographs of at least one scalp naevus per participant were taken and evaluated for specific clinical and dermoscopic features. RESULTS: In total 867 subjects, including 119 participants (13·7%) with scalp naevi, participated in the study. Compared with those without scalp naevi, subjects with scalp naevi were significantly younger, were more often men and more often exhibited congenital naevi on the body (P < 0·01 for all). Analysis of the clinical and dermoscopic variability of scalp naevi allowed for a proposal to classify scalp naevi into six main groups, namely common, papillomatous, eclipse, congenital, blue and atypical naevus. CONCLUSIONS: Scalp naevi can be classified into six morphological groups; scalp lesions deviating from these six main patterns should be carefully managed to rule out melanoma.


Assuntos
Dermoscopia/métodos , Neoplasias de Cabeça e Pescoço/classificação , Nevo/classificação , Couro Cabeludo/patologia , Neoplasias Cutâneas/classificação , Adulto , Estudos de Coortes , Feminino , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Masculino , Nevo/patologia , Neoplasias Cutâneas/patologia , Adulto Jovem
12.
J Eur Acad Dermatol Venereol ; 28 Suppl 1: 1-37, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24354653

RESUMO

BACKGROUND: After the first investigational study on the use of extracorporeal photopheresis for the treatment of cutaneous T-cell lymphoma was published in 1983 with its subsequent recognition by the FDA for its refractory forms, the technology has shown significant promise in the treatment of other severe and refractory conditions in a multi-disciplinary setting. Among the major studied conditions are graft versus host disease after allogeneic bone marrow transplantation, systemic sclerosis, solid organ transplant rejection and inflammatory bowel disease. MATERIALS AND METHODS: In order to provide recognized expert practical guidelines for the use of this technology for all indications the European Dermatology Forum (EDF) proceeded to address these questions in the hands of the recognized experts within and outside the field of dermatology. This was done using the recognized and approved guidelines of EDF for this task. RESULTS AND CONCLUSION: These guidelines provide at present the most comprehensive available expert recommendations for the use of extracorporeal photopheresis based on the available published literature and expert consensus opinion.


Assuntos
Doenças Autoimunes/tratamento farmacológico , Linfoma Cutâneo de Células T/tratamento farmacológico , Fotoferese/estatística & dados numéricos , Fármacos Fotossensibilizantes/uso terapêutico , Neoplasias Cutâneas/tratamento farmacológico , Rejeição de Enxerto/tratamento farmacológico , Doença Enxerto-Hospedeiro/tratamento farmacológico , Humanos , Doenças Inflamatórias Intestinais/tratamento farmacológico , Fotoferese/métodos , Escleroderma Sistêmico/tratamento farmacológico , Resultado do Tratamento
13.
Artigo em Alemão | MEDLINE | ID: mdl-25267318

RESUMO

OBJECTIVES: Within the framework of the German Health Interview and Examination Survey for Adults (DEGS), the Robert Koch Institute (RKI) conducted a nationwide mortality follow-up study. As there is no national mortality register in Germany, mortality and causes of death were investigated individually and under observance of state-specific data protection conditions. METHODS: The German Health Interview and Examination Survey 1998 (GNHIES98) provided the database including 7,124 participants aged 18-79 years. A total of 6,979 participants of GNHIES98 (98 %) who consented to be re-contacted were invited between October 2008 and October 2011 to also participate in the first data collection wave of DEGS (DEGS1). In this context, the vital status and the causes of death for deceased participants were assessed. Age- and sex-specific probabilities of survival and death rates were calculated and grouped by main causes of death according to ICD-10 groups. RESULTS: A total of 671 individuals (285 women, 386 men) died between the two survey contacts. For all deceased persons the date of death and for 539 (80.3 %) the causes of death could be determined. With a median follow-up time of 12.0 years, 8,0742.5 person years were available for survival analysis. The crude overall death rate amounted to 8.3 per 1,000 persons-years (women: 7.2; men: 9.5). Among 539 persons with available information on causes of death, 209 (38.8 %) were attributable to cardiovascular diseases, 188 (34.9 %) to cancer, 135 (25.0 %) to other causes, and seven (1.3 %) could not be unambiguously assigned. CONCLUSIONS: A mortality follow-up was successfully integrated in the longitudinal component of DEGS as part of the national health monitoring at the RKI. Death rates and cause-specific mortality in relation to highly prevalent chronic diseases and risk factors provide essential information for assessing the potential of prevention and quality of care among adults in Germany. This requires a regular and complete conduction of mortality follow-ups.


Assuntos
Causas de Morte , Entrevistas como Assunto , Mortalidade , Vigilância da População/métodos , Adolescente , Adulto , Distribuição por Idade , Idoso , Feminino , Seguimentos , Alemanha/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Distribuição por Sexo , Análise de Sobrevida , Adulto Jovem
14.
J Sci Food Agric ; 93(11): 2730-42, 2013 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-23529871

RESUMO

BACKGROUND: Argentinean semi-hard goat's cheeses manufactured with and without the addition of autochthonous adjunct cultures of Lactobacillus plantarum ETC17, Lactobacillus rhamnosus ETC14 and Enterococcus faecium ETC3 were analysed to evaluate the effect of these strains on ripening parameters. RESULTS: Gross composition was similar among cheeses. Microbiological analysis indicated that lactic acid bacteria added to cheeses reached high levels. None of the strains assayed affected the primary proteolysis. Overall, E. faecium had a clearer effect on the peptide and lipolysis profiles of cheeses. Analysis of the volatile fraction of cheeses indicated that the levels of several compounds involved in the overall flavour of goat's cheeses were affected by the presence of E. faecium. This could explain the differences detected in the global perception of cheeses made with this strain compared with control cheeses. CONCLUSION: The present work represents a first contribution to knowledge of the ripening process of Argentinean goat's cheeses made with the addition of autochthonous adjunct cultures. The results suggest that E. faecium ETC3 showed a significant effect during ripening, which was reflected both in the profiles of proteolysis, lipolysis and volatile compounds and in the global sensory perception of cheeses.


Assuntos
Queijo/microbiologia , Enterococcus faecium/fisiologia , Cabras , Lactobacillus/fisiologia , Leite , Animais , Argentina , Queijo/análise , Eletroforese , Análise de Alimentos , Lipídeos , Peptídeos/química , Fatores de Tempo , Compostos Orgânicos Voláteis
15.
Br J Cancer ; 107(11): 1840-3, 2012 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-23099805

RESUMO

BACKGROUND: Chemotherapy for primary central nervous system lymphoma (PCNSL) is based on methotrexate (MTX), which interferes with both nucleic acid synthesis and methionine metabolism. We have reported previously that genetic variants with influence on methionine metabolism are associated with MTX side effects, that is, the occurrence of white matter lesions as a sign of MTX neurotoxicity. Here, we investigated whether such variants are associated with MTX efficacy in terms of overall survival in MTX-treated PCNSL patients. METHODS: We analysed seven genetic variants influencing methionine metabolism in 68 PCNSL patients treated with systemic and facultative intraventricular MTX-based polychemotherapy (Bonn protocol). RESULTS: Median age at diagnosis was 59 years (range: 28-77), 32 patients were female. Younger age (Wald=8.9; P=0.003) and the wild-type C (CC) allele of the genotype transcobalamin c (Tc2). 776C>G (Wald=6.7; P=0.010) were associated with longer overall survival in a multivariate COX regression analysis. CONCLUSION: This observation suggests that the missense variant Tc2. 776C>G influences both neurotoxicity and efficacy of MTX in the Bonn PCNSL protocol.


Assuntos
Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/genética , Linfoma/tratamento farmacológico , Linfoma/genética , Metotrexato/uso terapêutico , Mutação de Sentido Incorreto/genética , Transcobalaminas/genética , Adulto , Idoso , Neoplasias do Sistema Nervoso Central/mortalidade , Feminino , Genótipo , Humanos , Linfoma/mortalidade , Masculino , Metionina/metabolismo , Metotrexato/efeitos adversos , Pessoa de Meia-Idade , Análise de Sobrevida
16.
J Eur Acad Dermatol Venereol ; 26(3): 368-72, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21504486

RESUMO

BACKGROUND: Computerized analysis of pigmented skin lesions may help to increase diagnostic accuracy for melanoma, help to avoid unnecessary procedures and reduce health care costs. OBJECTIVES: We evaluated both the patient acceptance and diagnostic utility of such an analysis tool in a real clinical setting. METHODS: Two hundred nine consecutive patients (median age: 34 years, range: 2-73 years), who were concerned about a pigmented skin lesion, answered a questionnaire about their attitude towards computerized analysis and their confidence in the resulting findings. Using a dermoscopy analyser, their skin lesions (n = 219) were then grouped into the categories, benign, suspicious and malignant, and results were compared with those obtained by in-person examination of dermato-oncologic experts. RESULTS: More than half of the patients (n = 114) would accept the use of computer analysis for melanoma screening; although 16 (14.0%) patients would accept this method solely, 98 (86.0%) patients would prefer an additional in-person examination by a dermatologist. Of the 219 pigmented skin lesions, the dermoscopic experts rated 171 (78.1%) as benign, 36 (16.4%) as suspicious and 12 (5.5%) as malignant, whereas computer analysis revealed 102 (46.6%) benign, 78 (35.6%) suspicious and 39 (17.8%) malignant lesions. At the expense of specificity (48.8%), the sensitivity of computerized analysis was excellent (100%) and equal to that of in-person examination. CONCLUSIONS: Most patients would accept computer analysis for melanoma screening, some of them even without reservations. However, due to a high rate of false positive computer assessments, it cannot be recommended as a screening tool at this time.


Assuntos
Carcinoma Basocelular/diagnóstico , Dermoscopia/métodos , Diagnóstico por Computador/métodos , Melanoma/diagnóstico , Aceitação pelo Paciente de Cuidados de Saúde , Transtornos da Pigmentação/diagnóstico , Neoplasias Cutâneas/diagnóstico , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Diagnóstico Diferencial , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
17.
Artigo em Alemão | MEDLINE | ID: mdl-22373860

RESUMO

Cause-specific mortality is an important endpoint in longitudinal epidemiological studies to research causal health links and carry out individual process analyses. As in Germany no national mortality register exists, state-specific data-protection conditions for and approaches to cause of death studies were researched and tested within the framework of a pilot project. The database was provided by a sample of deceased study participants from the 1998 nationwide health survey. Under the given conditions, cause of death research in a nationwide epidemiological study is possible in principle, but requires a great deal of time and effort. In Rhineland-Palatinate research needs to be carried out in a timely manner as the health authorities' retention period for death certificates is limited to minimum of 5 years. In Berlin the research situation is particularly difficult as, while the death certificates are held 3 years by the statistics bureau, this department cannot release any pseudonymous data. In Berlin it is possible to research the cause of death for some of the deceased through the doctors and hospitals that issued the death certificates and through the GKR Berlin-Brandenburg (in keeping with the special data protection measures of the cancer registry). In North Rhine Westphalia the written consent obtained during people's lifetimes, including an explicit release from medical confidentiality, is required to carry out cause of death research. In all other German states exceptions are possible, in all cases requiring the consent of the state's data protection commissioners. The results of the pilot project underline the need for a national mortality register. Until this is established the approach used in the pilot study can be used and, working together with the state and national data protection authorities and with the highest national health authorities, can be further optimized in order to avoid losing data and to use resources efficiently.


Assuntos
Causas de Morte , Estudos Epidemiológicos , Mortalidade , Segurança Computacional , Atestado de Óbito , Alemanha , Humanos , Projetos Piloto , Sistema de Registros , Pesquisa , Estudos Retrospectivos
18.
ESMO Open ; 7(3): 100498, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35642988

RESUMO

BACKGROUND: While side-effects and health-related quality of life (QoL) are routinely assessed in clinical trials, commonly used tools do not measure patients' ability to maintain normal daily activities. QoL can be severely affected directly by the disease, the treatment side-effects and by personal and societal misconceptions promoting avoidance from activities perceived as dangerous for cancer patients. We examined practices of actively treated patients with cancer. METHODS: A questionnaire was designed, assessing daily activities (11 items) and dietary limitations (7 items) distributed between October and December 2019 (before the coronavirus pandemic) among patients treated at the Oncology Division of Tel Aviv Sourasky Medical Center. RESULTS: The study population comprised 208 patients who participated in the survey. The majority reported at least one social-environmental avoidance or dietary limitation (136, 65% and 120, 57.7%, respectively), including abstaining from social contact, avoiding pets, public domains, traveling and maintaining dietary constraints. Adoption of these measures was not associated with clinical, demographic factors and treatment type. The major sources guiding restrictions came from advice of non-medical personnel (55.7%), the Internet (7.2%) and personal choice by the patients themselves (24%). CONCLUSIONS: Most cancer patients reported compromised daily activities, which are likely attributed to misbeliefs about disease and treatment, and have a deleterious impact on QoL, in its wider sense, namely, the ability to conduct a full and meaningful life. These findings call for the development and implementation of tools examining patients' real-life activity, beyond side-effects or health-related QoL (HRQoL). We propose this assessment as an integral part in the evaluation of new drugs and technologies and as an additional endpoint in pivotal clinical trials.


Assuntos
Neoplasias , Qualidade de Vida , Atividades Cotidianas , Humanos , Inquéritos e Questionários
19.
ESMO Open ; 7(6): 100648, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36462463

RESUMO

BACKGROUND: An effect of non-oncology medications on cancer outcome has been proposed. In this study, we aimed to systematically examine the impact of commonly prescribed non-oncology drugs on clinical risk and on the genomic risk [based on the Oncotype DX recurrence score (RS)] in early breast cancer (BC). EXPERIMENTAL DESIGN: We collected data on clinical risk (stage and grade), genomic risk (Oncotype DX RS), and on non-oncology medications administered to 1423 patients with estrogen receptor-positive human epidermal growth factor receptor 2-negative BC during the month of their surgery. The influence of various medications on clinical and genomic risks was evaluated by statistical analysis. RESULTS: Out of the multiple drugs we examined, levothyroxine was significantly associated with a high Oncotype DX RS (mean 24.78; P < 0.0001) and metformin with a low Oncotype DX RS (mean 14.87; P < 0.01) compared with patients not receiving other non-oncology drugs (mean 18.7). By contrast, there were no differences in the clinical risk between patients receiving metformin, levothyroxine, or no other non-oncology drugs. Notably, there was no association between the consumption of levothyroxine and metformin and proliferation marker (Ki67) levels, but both drugs were significantly associated with progesterone-related features, suggesting that they influence genomic risk through estrogen-dependent signaling. CONCLUSIONS: The results of this study indicate a significant impact of metformin and levothyroxine on clinical decisions in luminal BC, with potential impact on the clinical course of these patients.


Assuntos
Neoplasias da Mama , Metformina , Humanos , Feminino , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Tiroxina , Recidiva Local de Neoplasia/genética , Genômica
20.
ESMO Open ; 6(2): 100088, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33735801

RESUMO

BACKGROUND: Approximately 50% of human epidermal growth factor receptor 2 (HER2)-positive breast cancer lesions express hormone receptors. These tumors present a unique therapeutic challenge, and the optimal endocrine therapeutic approach remains controversial. We aimed to study the optimal adjuvant endocrine therapy in this setting, to better establish the basis for clinical recommendations in HER2-positive disease. METHODS: We conducted a literature search up to May 2020, in which we identified randomized controlled trials (RCTs) that investigated the efficacy of various adjuvant hormonal therapies among premenopausal and postmenopausal patients with hormone receptor (HR)-positive, HER2-positive early breast cancer. Disease-free survival (DFS) was calculated with the random effect model and hazard ratios (HRs) with 95% confidence intervals (CI). RESULTS: Six RCTs (N = 5390 patients) were included in the final analysis. There was no significant difference in DFS between adjuvant treatment with aromatase inhibitors and tamoxifen (HR 0.99, 95% CI 0.68-1.44, P = 0.96). Furthermore, after omitting the ALTTO trial, as it did not randomize patients to hormonal therapy, no significant difference was observed between the two protocols (HR 1.06, 95% CI 0.65-1.73, P = 0.81). CONCLUSION: Our study demonstrates similar DFS with tamoxifen and aromatase inhibitors as adjuvant endocrine treatment in HER2-positive HR-positive early-stage breast cancer patients. Future larger prospective studies focusing on the various contemporary endocrine regimens are warranted to validate our findings.


Assuntos
Neoplasias da Mama , Tamoxifeno , Inibidores da Aromatase/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Quimioterapia Adjuvante , Intervalo Livre de Doença , Feminino , Humanos , Tamoxifeno/uso terapêutico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA