Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 187
Filtrar
Más filtros

Tipo del documento
Intervalo de año de publicación
1.
Z Rheumatol ; 79(10): 1046-1049, 2020 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-32816071

RESUMEN

A 46-year-old female patient with a known HIV-2-infection suffered from adult onset Still's disease, which was initially complicated by a macrophage activation syndrome (MAS). The required glucocorticoid treatment induced a psychosis and the patient developed an aversion to glucocorticoids. After failure of treatment with anakinra, an alternative option with the JAK-inhibitor tofacitinib was introduced because of the short half-life and to reduce glucocorticoid exposure. A switch to tofacitinib was only successful after an overlapping treatment with anakinra and tofacitinib for 3 weeks. The patient is currently being treated with monotherapy with tofacitinib as well as NSAID on demand, is in stable remission and can continue working as normal.


Asunto(s)
Infecciones por VIH/complicaciones , Piperidinas/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Pirimidinas/uso terapéutico , Pirroles/uso terapéutico , Enfermedad de Still del Adulto , Adulto , Femenino , VIH-2 , Humanos , Persona de Mediana Edad , Enfermedad de Still del Adulto/complicaciones , Enfermedad de Still del Adulto/tratamiento farmacológico , Resultado del Tratamiento
2.
Nervenarzt ; 88(1): 78-82, 2017 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-26975653

RESUMEN

In the history of psychiatry, "schizophrenia" has often been portrayed as the discipline's pars pro toto, which prototypically represents mental illness as such and which draws together the fundamental questions concerning psychiatric epistemology and practice. Taking a conceptual history approach, this essay examines how "schizophrenia" is represented in psychiatric discourse and what aspects of its representation account for the pars pro toto status. Three such aspects are identified: a pragmatic, an existential and a justificatory aspect. Following up these aspects in present day psychiatric discourse, it is concluded that "schizophrenia" is losing its special status as the representations of psychiatry and of mental illness have changed and become more diverse. Tentative conclusions regarding current debates about the abolition of "schizophrenia" are drawn.


Asunto(s)
Modelos Psicológicos , Psiquiatría/historia , Psicoterapia/historia , Esquizofrenia/clasificación , Esquizofrenia/historia , Alemania , Historia del Siglo XIX , Historia del Siglo XX , Historia del Siglo XXI , Humanos
3.
Ann Oncol ; 27(8): 1386-422, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27380959

RESUMEN

Colorectal cancer (CRC) is one of the most common malignancies in Western countries. Over the last 20 years, and the last decade in particular, the clinical outcome for patients with metastatic CRC (mCRC) has improved greatly due not only to an increase in the number of patients being referred for and undergoing surgical resection of their localised metastatic disease but also to a more strategic approach to the delivery of systemic therapy and an expansion in the use of ablative techniques. This reflects the increase in the number of patients that are being managed within a multidisciplinary team environment and specialist cancer centres, and the emergence over the same time period not only of improved imaging techniques but also prognostic and predictive molecular markers. Treatment decisions for patients with mCRC must be evidence-based. Thus, these ESMO consensus guidelines have been developed based on the current available evidence to provide a series of evidence-based recommendations to assist in the treatment and management of patients with mCRC in this rapidly evolving treatment setting.


Asunto(s)
Biomarcadores de Tumor/genética , Neoplasias Colorrectales/tratamiento farmacológico , Pronóstico , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/patología , Guías como Asunto , Humanos , Terapia Molecular Dirigida , Metástasis de la Neoplasia
4.
Nervenarzt ; 87(1): 69-73, 2016 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-26493060

RESUMEN

Delusion is a central but difficult and controversial term in psychiatry. Similar to the term schizophrenia at the nosological level, the basic questions in the specialty are linked in the debate on delusion at the clinical psychopathological level, beginning with epistemological and methodological aspects up to concrete embodiment of the physician-patient relationship. The text of this article reflects this development from the nineteenth century up to the present day and makes reference to the lively discussion on the future directions of psychiatric research triggered by the research domain criteria (RDoC). Under certain prerequisites, including in particular an extensive understanding of psychopathology, delusion is considered to be a reasonable scientific term, also in the future.


Asunto(s)
Deluciones/clasificación , Deluciones/diagnóstico , Clasificación Internacional de Enfermedades , Psiquiatría/tendencias , Psicopatología/tendencias , Terminología como Asunto , Deluciones/psicología , Diagnóstico Diferencial , Humanos
5.
Br J Cancer ; 112(3): 424-8, 2015 Feb 03.
Artículo en Inglés | MEDLINE | ID: mdl-25535726

RESUMEN

BACKGROUND: KRAS mutations have been associated with lung metastases at diagnosis of metastatic colorectal cancer (mCRC), but the impact of this mutation on subsequent development of lung metastasis is unknown. We investigated KRAS mutation as a predictor of lung metastasis development. METHODS: We retrospectively evaluated data from patients with mCRC whose tumour was tested for KRAS mutation from 2008 to 2010. The relationships of KRAS mutational status with time-to-lung metastasis (TTLM) and overall survival (OS) were analysed. RESULTS: Of the 494 patients identified, 202 (41%) had tumours with KRAS mutation. KRAS mutations were associated with a shorter TTLM (median 15.2 vs 22.4 months; hazard ratio=1.40; P=0.002) and a two-fold greater odds of developing lung metastases during the disease course in patients with liver-limited mCRC at diagnosis (72 vs 56%, P=0.007). Overall survival did not differ by KRAS status. CONCLUSIONS: Lung metastasis was more likely to develop during the disease course in patients whose tumour had a KRAS mutation than in those whose tumour did not have a KRAS mutation. This finding may have an impact on decision making for surgical resection of metastatic disease.


Asunto(s)
Neoplasias Colorrectales/patología , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/secundario , Mutación , Proteínas Proto-Oncogénicas/genética , Proteínas ras/genética , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/mortalidad , Progresión de la Enfermedad , Femenino , Estudios de Asociación Genética , Humanos , Neoplasias Pulmonares/mortalidad , Masculino , Persona de Mediana Edad , Proteínas Proto-Oncogénicas p21(ras) , Estudios Retrospectivos
6.
Br J Cancer ; 112(6): 1088-97, 2015 Mar 17.
Artículo en Inglés | MEDLINE | ID: mdl-25688736

RESUMEN

BACKGROUND: High circulating neutrophil-lymphocyte ratio (NLR) appears to be prognostic in metastatic colorectal cancer (mCRC). We investigated the relationship of NLR with circulating cytokines and molecular alterations. METHODS: We performed retrospective analyses on multiple cohorts of CRC patients (metastatic untreated (n=166), refractory metastatic (n=161), hepatectomy (n=198), stage 2/3 (n=274), and molecularly screened (n=342)). High NLR (ratio of absolute neutrophil-to-lymphocyte counts in peripheral blood) was defined as NLR>5. Plasma cytokines were evaluated using multiplex-bead assays. Kaplan-Meier estimates, non-parametric correlation analysis, and hierarchical cluster analyses were used. RESULTS: High NLR was associated with poor prognosis in mCRC (hazard ratio (HR) 1.73; 95% confidence interval (CI):1.03-2.89; P=0.039) independent of known prognostic factors and molecular alterations (KRAS/NRAS/BRAF/PIK3CA/CIMP). High NLR correlated with increased expression of interleukin 6 (IL-6), IL-8, IL-2Rα, hepatocyte growth factor, macrophage-colony stimulating factor, and vascular epidermal growth factor in exploratory (n=39) and validation (n=166) cohorts. Fourteen additional cytokines correlated with high NLR in the validation cohort. All 20 cytokines fell into three major clusters: inflammatory cytokines, angiogenic cytokines, and epidermal growth factor ligands. In mCRC, composite stratification based on NLR-cytokine score provided enhanced prognostic information (HR 2.09; 95% CI: 1.59-2.76; P<0.001) over and above NLR. CONCLUSIONS: High NLR is an independent poor prognostic marker in CRC and correlates with a distinct cytokine profile related to key biological processes involved in carcinogenesis. A composite NLR-cytokine stratification has enhanced prognostic value in mCRC.


Asunto(s)
Neoplasias Colorrectales/inmunología , Citocinas/sangre , Linfocitos/patología , Neutrófilos/patología , Adulto , Anciano , Estudios de Cohortes , Neoplasias Colorrectales/sangre , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/patología , Citocinas/inmunología , Femenino , Humanos , Estimación de Kaplan-Meier , Recuento de Leucocitos/métodos , Linfocitos/inmunología , Masculino , Persona de Mediana Edad , Metástasis de la Neoplasia , Neutrófilos/inmunología , Pronóstico , Estudios Retrospectivos
7.
Eur J Clin Microbiol Infect Dis ; 34(2): 277-86, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25169967

RESUMEN

Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (KPC-Kp) is an emergent pathogen in healthcare-associated infections (HAIs). The aim of this study was to describe HAIs due to KPC-Kp, as well as identify mortality risk factors in cancer patients. In patients diagnosed with HAIs due to KPC-Kp between January 2009 and July 2013, we evaluated only the first infection episode of each patient, analyzing mortality separately for patients treated for ≥48 h with at least one antimicrobial agent proven to display in vitro activity against KPC-Kp. We evaluated variables related to the malignancy, the severity and characteristics of the HAI, and the antimicrobial therapy. We identified 83 HAIs due to KPC-Kp. The 30-day mortality was 57.8 % for all infections and 72.7 % for bacteremic infections. Of the 83 patients, 60 patients received ≥48 h of appropriate treatment and 44 (53 %) developed bacteremia. Ten patients (12 %) were neutropenic at HAI diagnosis and 33 (39.8 %) had infection at the tumor site. The most common HAI was urinary tract infection, seen in 26 patients (31.3 %), followed by primary bloodstream infection, seen in 24 patients (28.9 %). Forty-four patients (73.3 %) received combination antimicrobial therapy, most often including polymyxin (68.3 %). Risk factors for 30-day mortality are high sequential organ failure assessment (SOFA) score, need for intensive care stay at diagnosis of infection, and acute kidney injury; the removal of invasive devices related to infection and treatment with effective antibiotics for KPC-Kp are protective factors. In cancer patients, high mortality is associated with HAI due to KPC-Kp and mortality risk factors are more often related to acute infection than to the underlying disease.


Asunto(s)
Antibacterianos/uso terapéutico , Proteínas Bacterianas/metabolismo , Infección Hospitalaria , Infecciones por Klebsiella/complicaciones , Klebsiella pneumoniae/enzimología , Neoplasias/complicaciones , beta-Lactamasas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Bacteriemia , Femenino , Humanos , Infecciones por Klebsiella/microbiología , Infecciones por Klebsiella/mortalidad , Masculino , Persona de Mediana Edad , Neoplasias/microbiología , Neoplasias/mortalidad , Factores de Riesgo
8.
Z Rheumatol ; 74(6): 540-2, 2015 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-26231832

RESUMEN

This article presents a particularly severe case of adult onset Still's disease aggravated by small vessel vasculitis. A satisfactory therapy was concluded 1.5 years after onset of the disease. The small vessel vasculitis was difficult to treat: methotrexate (MTX), cyclophosphamide and rituximab were not sufficiently effective. Tocilizumab in combination with intravenous immunoglobulin (IVIG) induced remission and maintenance therapy was carried out with tocilizumab.


Asunto(s)
Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/tratamiento farmacológico , Anticuerpos Monoclonales Humanizados/administración & dosificación , Inmunoglobulinas Intravenosas/administración & dosificación , Enfermedad de Still del Adulto/complicaciones , Enfermedad de Still del Adulto/tratamiento farmacológico , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/complicaciones , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/diagnóstico , Esquema de Medicación , Quimioterapia Combinada , Humanos , Inmunosupresores/administración & dosificación , Masculino , Enfermedad de Still del Adulto/diagnóstico , Resultado del Tratamiento , Adulto Joven
9.
Br J Cancer ; 111(8): 1590-604, 2014 Oct 14.
Artículo en Inglés | MEDLINE | ID: mdl-25121956

RESUMEN

BACKGROUND: This study evaluated soluble serum proteins as biomarkers to subset patients with metastatic colorectal cancer (mCRC) treated with chemotherapy±cediranib, a vascular endothelial growth factor (VEGF) signalling inhibitor (VEGFi). Exploring biomarkers at pre- and on-treatment may identify patient subgroups showing clinical benefit on cediranib combination. METHODS: Two hundred and seven serum proteins were analysed in 588 mCRC patients at pre- and on-treatment with chemotherapy (FOLFOX/CAPOX)±cediranib 20 mg. Patients were enrolled in the phase III trial HORIZON II. We correlated baseline biomarker signatures and pharmacodynamic (PD) biomarkers with PFS and OS. RESULTS: We identified a baseline signature (BS) of 47 biomarkers that included VEGFA, VEGFD, VEGFR2, VEGFR3 and TIE-2, which defined two distinct subgroups of patients. Patients treated with chemotherapy plus cediranib who had 'high' BS had shorter PFS (HR=1.82, P=0.003) than patients with 'low' BS. This BS did not correlate with PFS of the patients treated with chemotherapy plus placebo. In addition, we identified a profile of 16 PD proteins on treatment associated with PFS (HR=0.58, P<0.001) and OS (HR=0.52, P<0.001) in patients treated with chemotherapy plus cediranib. This PD profile did not correlate with PFS and OS in patients treated with chemotherapy plus placebo. CONCLUSIONS: Serum proteins may represent relevant biomarkers to predict the outcome of patients treated with VEGFi-based therapies. We report a BS and PD biomarkers that may identify mCRC patients showing increased benefit of combining cediranib with chemotherapy. These exploratory findings need to be validated in future prospective studies.


Asunto(s)
Antineoplásicos/uso terapéutico , Biomarcadores de Tumor/sangre , Proteínas Sanguíneas/metabolismo , Neoplasias Colorrectales/tratamiento farmacológico , Quinazolinas/uso terapéutico , Neoplasias Colorrectales/sangre , Neoplasias Colorrectales/fisiopatología , Humanos , Resultado del Tratamiento
10.
Br J Cancer ; 108(6): 1316-23, 2013 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-23449351

RESUMEN

BACKGROUND: The prognostic/predictive value of potential vascular endothelial growth factor (VEGF) signalling biomarkers was evaluated retrospectively using samples from two randomized Phase III studies (HORIZON II and III) investigating cediranib in metastatic colorectal cancer (mCRC). METHODS: Baseline levels of VEGF, soluble VEGF receptor-2 (sVEGFR-2) and carcinoembryonic antigen (CEA) were measured in plasma/serum samples collected from patients participating in HORIZON II (n=860; FOLFOX/XELOX plus cediranib 20 mg (n=502) or placebo (n=358)) and HORIZON III (n=1422; mFOLFOX6 plus cediranib 20 mg (n=709) or bevacizumab (n=713)). Median biomarker baseline levels determined cutoff values for the patient subgroups. RESULTS: Baseline data were available for 88-97% of patients/study (>2000 patients). In both the studies, high baseline VEGF and CEA were associated with worse outcomes for progression-free survival (PFS) and overall survival (OS) independent of treatment (HORIZON II OS: VEGF, hazard ratio (HR)=1.35 (95% confidence interval (CI): 1.12-1.63); CEA, HR=1.63 (1.36-1.96); HORIZON III OS: VEGF, HR=1.32 (1.12-1.54); CEA, HR=1.50 (1.29-1.76)). sVEGFR-2 was not prognostic for PFS/OS. Baseline VEGF and CEA were not predictive for PFS/OS outcome to cediranib treatment; low sVEGFR-2 was associated with a trend towards improved cediranib effect in HORIZON II. CONCLUSION: Baseline VEGF and CEA levels were treatment-independent prognostic biomarkers for PFS and OS in both the studies.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Antígeno Carcinoembrionario/sangre , Neoplasias Colorrectales/mortalidad , Factor A de Crecimiento Endotelial Vascular/sangre , Receptor 2 de Factores de Crecimiento Endotelial Vascular/sangre , Anticuerpos Monoclonales Humanizados/administración & dosificación , Bevacizumab , Biomarcadores de Tumor/sangre , Neoplasias Colorrectales/sangre , Neoplasias Colorrectales/tratamiento farmacológico , Ensayo de Inmunoadsorción Enzimática , Estudios de Seguimiento , Humanos , Metástasis de la Neoplasia , Estadificación de Neoplasias , Pronóstico , Quinazolinas/administración & dosificación , Estudios Retrospectivos , Tasa de Supervivencia
11.
Br J Cancer ; 109(11): 2765-73, 2013 Nov 26.
Artículo en Inglés | MEDLINE | ID: mdl-24149180

RESUMEN

BACKGROUND: The prognostic and predictive value of multiple serum biomarkers was evaluated using samples from a randomised phase III study (HORIZON II) investigating chemotherapy with or without cediranib in metastatic colorectal cancer (mCRC). METHODS: Baseline levels of 207 protein markers were measured in serum samples from 582 HORIZON II (FOLFOX/XELOX plus cediranib 20 mg (n=330) or placebo (n=252)) patients. Median baseline values of each biomarker were used to categorise patients as high or low. Markers were then assessed for their association with efficacy, defined by progression-free survival (PFS) and overall survival (OS). A generalised boosted regression model identified markers of particular interest. RESULTS: Correlation of protein levels with PFS and OS suggested that multiple factors had a prognostic value, independent of treatment arm, including IL-6, IL-8, C-reactive protein (CRP), ICAM-1 and carcinoembryonic antigen (CEA). Among the angiogenesis regulators, low levels of vascular endothelial growth factor (VEGF), VEGF-D, VEGFR-1, VEGFR-3, NRP1 and Tie-2 correlated with better outcome. CONCLUSION: This large data set generated using serum samples from mCRC patients treated with chemotherapy and VEGF inhibitors, defines baseline characteristics for 207 serum proteins. Multiple prognostic factors were identified that could be disease related or predict which patients derive most benefit from 5-fluorouracil (5-FU)-based chemotherapy, meriting further exploration in prospective studies.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Proteínas Sanguíneas/análisis , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/tratamiento farmacológico , Desoxicitidina/análogos & derivados , Fluorouracilo/análogos & derivados , Quinazolinas/administración & dosificación , Biomarcadores/sangre , Capecitabina , Neoplasias Colorrectales/sangre , Neoplasias Colorrectales/mortalidad , Desoxicitidina/uso terapéutico , Método Doble Ciego , Femenino , Fluorouracilo/uso terapéutico , Estudios de Seguimiento , Humanos , Leucovorina/uso terapéutico , Masculino , Compuestos Organoplatinos/uso terapéutico , Oxaloacetatos , Placebos , Valor Predictivo de las Pruebas , Pronóstico , Análisis de Supervivencia
12.
Ann Oncol ; 24(7): 1942-1947, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23493134

RESUMEN

BACKGROUND: Non-inferiority clinical trials (NIFCTs) aim to demonstrate that the experimental therapy has advantages over the standard of care, with acceptable loss of efficacy. We evaluated the purposes underlying the selection of a non-inferiority design in oncology and the size of their non-inferiority margins (NIFm's). PATIENTS AND METHODS: All NIFCTs of cancer-directed therapies and supportive care agents published in a 10-year period were eligible. Two investigators extracted the data and independently classified the trials by their purpose to choose a non-inferiority design. RESULTS: Seventy-five were included: 43% received funds from industry, overall survival was the most common primary end point and 73% reported positive results. The most frequent purposes underlying the selection of a non-inferiority design were to test more conveniently administered schedules and/or less toxic treatments. In 13 (17%) trials, a clear purpose was not identified. Among the trials that reported a pre-specified NIFm, the median value was 12.5% (range 4%-25%) for trials with binary primary end points and Hazard Ratio of 1.25 (range 1.10-1.50) for trials that used time-to-event primary outcomes. CONCLUSION: Cancer NIFCT harbor serious methodological and ethical issues. Many use large NIFm and nearly one-fifth did not state a clear purpose for selecting a non-inferiority design.


Asunto(s)
Neoplasias/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto/estadística & datos numéricos , Proyectos de Investigación , Humanos , Nivel de Atención , Resultado del Tratamiento
13.
Ann Oncol ; 23(8): 1937-1942, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22534771

RESUMEN

Oxaliplatin is a third generation platinum compound that inhibits DNA synthesis, mainly through intrastrandal cross-links in DNA. Most of the experience with the clinical use of this drug is derived from colorectal cancer but it is also used in other tumor types such as ovary, breast, liver and non-Hodgkin's lymphoma. Thrombocytopenia is a frequent toxicity seen during oxaliplatin treatment, occurring at any grade in up to 70% of patients and leading to delays or even discontinuation of the chemotherapy. Although myelossupression is recognized as the main cause of oxaliplatin-related thrombocytopenia, new mechanisms for this side-effect have emerged, including splenic sequestration of platelets related to oxaliplatin-induced liver damage and immune thrombocytopenia. These new pathophysiology pathways have different clinical presentations and evolution and may need specific therapeutic maneuvers. This article attempts to review this topic and provides useful clinical information for the management of oxaliplatin-related thrombocytopenia.


Asunto(s)
Antineoplásicos/efectos adversos , Neoplasias/tratamiento farmacológico , Compuestos Organoplatinos/efectos adversos , Trombocitopenia/inducido químicamente , Antineoplásicos/uso terapéutico , Humanos , Neoplasias/sangre , Compuestos Organoplatinos/uso terapéutico , Oxaliplatino
14.
Ann Oncol ; 23(10): 2479-2516, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23012255

RESUMEN

Colorectal cancer (CRC) is the most common tumour type in both sexes combined in Western countries. Although screening programmes including the implementation of faecal occult blood test and colonoscopy might be able to reduce mortality by removing precursor lesions and by making diagnosis at an earlier stage, the burden of disease and mortality is still high. Improvement of diagnostic and treatment options increased staging accuracy, functional outcome for early stages as well as survival. Although high quality surgery is still the mainstay of curative treatment, the management of CRC must be a multi-modal approach performed by an experienced multi-disciplinary expert team. Optimal choice of the individual treatment modality according to disease localization and extent, tumour biology and patient factors is able to maintain quality of life, enables long-term survival and even cure in selected patients by a combination of chemotherapy and surgery. Treatment decisions must be based on the available evidence, which has been the basis for this consensus conference-based guideline delivering a clear proposal for diagnostic and treatment measures in each stage of rectal and colon cancer and the individual clinical situations. This ESMO guideline is recommended to be used as the basis for treatment and management decisions.


Asunto(s)
Neoplasias Colorrectales/terapia , Toma de Decisiones , Medicina de Precisión , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/epidemiología , Consejo , Humanos , Grupo de Atención al Paciente , Pronóstico
15.
Phys Rev Lett ; 108(6): 063002, 2012 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-22401063

RESUMEN

The steering of electron motion in molecules is accessible with waveform-controlled few-cycle laser light and may control the outcome of light-induced chemical reactions. An optical cycle of light, however, is much shorter than the duration of the fastest dissociation reactions, severely limiting the degree of control that can be achieved. To overcome this limitation, we extended the control metrology to the midinfrared studying the prototypical dissociative ionization of D(2) at 2.1 µm. Pronounced subcycle control of the directional D(+) ion emission from the fragmentation of D(2)(+) is observed, demonstrating unprecedented charge-directed reactivity. Two reaction pathways, showing directional ion emission, could be observed and controlled simultaneously for the first time. Quantum-dynamical calculations elucidate the dissociation channels, their observed phase relation, and the control mechanisms.

16.
Arthritis Res Ther ; 24(1): 117, 2022 05 21.
Artículo en Inglés | MEDLINE | ID: mdl-35596202

RESUMEN

BACKGROUND: Fluorescence optical imaging (FOI) enables visualisation of inflammation in both hands in rheumatoid arthritis (RA). OBJECTIVE: To investigate the usefulness of FOI in treatment monitoring under anti-TNFα therapy with certolizumab pegol (CZP) in patients with RA in comparison to clinical and laboratory outcome parameters. METHODS: CZP-naïve patients with RA were eligible for this open-label study with an observational period of 52 weeks. Disease activity was monitored by the clinical score DAS28, tender/swollen joint count (TJC-28/SJC-28) and laboratory outcomes for systemic inflammation (CRP and ESR). FOI results were analysed in three different phases (P1-3) and PrimaVistaMode (PVM) by the FOI activity score (FOIAS). RESULTS: Twenty-eight RA patients (median age 52.5 years, 26 females, thirteen with a history of other biologic therapy) were included. DAS28 (CRP) decreased from moderate disease activity at baseline (median 4.6, IQR 1.8) to low disease activity at week (w)52 (median 2.7, IQR 2.1; p < 0.001). Statistically significant decreases could also be demonstrated for SJC-28 and TJC-28. CRP/ESR were reduced numerically from baseline to w52. FOIAS in P1 (early phase) showed a continuous decrease of enhancement during the course of treatment period: from baseline (median 1.5, IQR 9.3) over w6 (median 1.0, IQR 3.0; p = 0.069), w12 (median 0.5, IQR 3.0; p = 0.171), w24 (n = 27, median 0.0, IQR 3.0; p = 0.004), until w52 (n = 18, median 0.0, IQR 2.8; p = 0.091), which could not be presented for FOIAS in P2, P3 and PVM. CONCLUSION: FOI in P1 appears to be a valuable tool for fast and easy monitoring of treatment response to certolizumab in a clinical setting.


Asunto(s)
Antirreumáticos , Artritis Reumatoide , Artritis Reumatoide/diagnóstico por imagen , Artritis Reumatoide/tratamiento farmacológico , Certolizumab Pegol/efectos adversos , Método Doble Ciego , Femenino , Humanos , Verde de Indocianina/uso terapéutico , Inflamación/tratamiento farmacológico , Persona de Mediana Edad , Imagen Óptica , Resultado del Tratamiento
17.
Braz J Med Biol Res ; 55: e12140, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36102415

RESUMEN

We sought to compare the clinical presentation and prognosis of patients with lung cancer and confirmed COVID-19 infection to those with negative RT-PCR SARS-CoV-2 results. We included patients with confirmed lung cancer and suspected COVID-19 who presented to the emergency department. The primary outcome was in-hospital mortality and secondary outcomes included admission to intensive care unit (ICU) or mechanical ventilation. We analyzed the characteristics according to RT-PCR results and primary outcome. We constructed a logistic regression for each RT-PCR result group to find potential predictors of the primary outcome. Among 110 individuals with confirmed lung cancer (65±9 years, 51% male), 38 patients had positive RT-PCR and 72 patients had negative RT-PCR. There was no difference between groups for any clinical characteristic or comorbidities though individuals with confirmed COVID-19 had higher functionality in the ECOG scale. Leucocytes and lymphocytes were lower in individuals with positive tests. The primary outcome occurred in 58 (53%) individuals, 37 (34%) were admitted to the ICU, and 29 (26%) required mechanical ventilation. Although mortality was similar between the two groups, individuals with confirmed COVID-19 were significantly more likely to be admitted to the ICU or receive mechanical ventilation. Only lower lymphocytes and higher CRP were significantly associated with higher mortality. The clinical presentation of COVID-19 in lung cancer is not sufficient to identify higher or lower probability groups among symptomatic individuals, the overall mortality is high irrespective of RT-PCR results, and lymphopenia on admission was associated with the diagnosis and prognosis for COVID-19.


Asunto(s)
COVID-19 , Neoplasias Pulmonares , COVID-19/diagnóstico , Femenino , Mortalidad Hospitalaria , Hospitales , Humanos , Neoplasias Pulmonares/diagnóstico , Masculino , SARS-CoV-2
18.
Ann Oncol ; 22(12): 2604-2609, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21415237

RESUMEN

BACKGROUND: To compare the effects of oral capecitabine-containing chemotherapy regimens with i.v. 5-fluorouracil (5-FU)-containing chemotherapy regimens on overall survival in patients with gastrointestinal cancers. METHODS: A meta-analysis, based on individual patient data from six randomised non-inferiority trials, was carried out at the request of regulatory authorities to compare the effects of single-agent capecitabine or capecitabine-containing chemotherapy versus matched 5-FU-based regimens in terms of overall survival in patients with stage III colon, metastatic colorectal or advanced gastric cancer. RESULTS: Data from a total of 6171 patients with stage III colon cancer (n = 1987), metastatic colorectal cancer (n = 3868) or advanced gastric cancer (n = 316) were included. A total of 3097 patients were treated with capecitabine-containing chemotherapy and 3074 patients with 5-FU-containing chemotherapy. The unadjusted hazard ratio for overall survival for capecitabine-containing chemotherapy versus 5-FU-containing chemotherapy was 0.94 (95% confidence interval 0.89-1.00; P = 0.0489). CONCLUSIONS: Oral capecitabine is at least equivalent to i.v. 5-FU in terms of overall survival in patients with gastrointestinal cancers. Capecitabine and 5-FU can be used interchangeably in these patient populations.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias Colorrectales/tratamiento farmacológico , Desoxicitidina/análogos & derivados , Fluorouracilo/análogos & derivados , Fluorouracilo/uso terapéutico , Neoplasias Gástricas/tratamiento farmacológico , Capecitabina , Neoplasias Colorrectales/mortalidad , Desoxicitidina/uso terapéutico , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Análisis Multivariante , Ensayos Clínicos Controlados Aleatorios como Asunto , Neoplasias Gástricas/mortalidad , Resultado del Tratamiento
19.
Phys Chem Chem Phys ; 13(19): 8653-8, 2011 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-21475765

RESUMEN

Strong few-cycle light fields with stable electric field waveforms allow controlling electrons on time scales down to the attosecond domain. We have studied the dissociative ionization of randomly oriented DCl in 5 fs light fields at 720 nm in the tunneling regime. Momentum distributions of D(+) and Cl(+) fragments were recorded via velocity-map imaging. A waveform-dependent anti-correlated directional emission of D(+) and Cl(+) fragments is observed. Comparison of our results with calculations indicates that tailoring of the light field via the carrier envelope phase permits the control over the orientation of DCl(+) and in turn the directional emission of charged fragments upon the breakup of the molecular ion.


Asunto(s)
Cloruros/química , Deuterio/química , Rayos Láser , Teoría Cuántica
20.
Psychopathology ; 44(3): 201-4, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21412034

RESUMEN

A 21-year-old female with Fabry's disease (FD) presented acute psychotic symptoms such as delusions, auditory hallucinations and formal thought disorders. Since the age of 14, she had suffered from various psychiatric symptoms increasing in frequency and intensity. We considered the differential diagnoses of prodromal symptoms of schizophrenia and organic schizophrenia-like disorder. Routine examinations including cognitive testing, electroencephalography and structural magnetic resonance imaging revealed no pathological findings. Additional structural and functional imaging demonstrated a minor CNS involvement of FD, yet without functional limitations. In summary our examination results support the thesis that in the case of our patient a mere coincidence of FD and psychotic symptoms is more likely than a causal connection.


Asunto(s)
Enfermedad de Fabry/complicaciones , Trastornos Psicóticos/complicaciones , Femenino , Humanos , Imagen por Resonancia Magnética , Trastornos Psicóticos/diagnóstico , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA