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Introducción. Los síndromes de sobrecrecimiento corporal segmentario son un grupo de enfermedades poco frecuentes caracterizadas por exceso de crecimiento en una o más partes del cuerpo relacionadas, en su mayoría, con mutaciones en mosaico en la vía de señalización AKT/PI3K/mTOR y RAS-MAPK. Nuestro objetivo fue analizar las características clínicas y auxológicas, y la calidad de vida relacionada a salud (CVRS) en este grupo de pacientes en un hospital de tercer nivel de atención. Población y métodos. Estudio transversal de una cohorte en seguimiento. Se analizaron edad, sexo, datos sociodemográficos, mediciones antropométricas del segmento afectado y del contralateral, complicaciones, tratamiento, calidad de vida (PedsQL4.0) y dolor. Se calcularon medidas centrales y de dispersión. Se realizó análisis univariado entre calidad de vida y variables incluidas. Resultados. Se incluyeron 50 pacientes, 29 varones. Mediana de edad 9,95 (r 1,44-17,81) años. El diagnóstico más frecuente fue síndrome de sobrecrecimiento relacionado a PIK3CA (PROS) (37/50). Mediana de número de segmentos afectados 2 (r: 1-7) por niño. Cuarenta casos presentaron malformación vascular; 20, capilar. El dolor (24/50) fue la complicación más frecuente. Treinta y un pacientes mostraron asimetría de longitud de miembros inferiores, < 5 cm. La estatura se ubicó entre los centilos 50 y 97 en la mayoría de los niños. Menor CVRS se observó en mujeres, en pacientes con malformación vascular compleja y necesidades básicas insatisfechas (NBI). Conclusiones. PROS fue el diagnóstico más frecuente. El dolor fue una complicación frecuente. La CVRS fue menor en mujeres, pacientes con malformación vascular combinada y NBI.
Introduction. Segmental overgrowth syndromes are a group of rare diseases characterized by overgrowth in one or more parts of the body, mostly related to mosaic mutations in the AKT/PI3K/mTOR and RASMAPK signaling pathway. Our objective was to analyze the clinical and auxological characteristics and health-related quality of life (HRQoL) in this group of patients at a tertiary care hospital. Population and methods. Cross-sectional study of a follow-up cohort. Age, sex, sociodemographic data, anthropometric measurements of the affected and contralateral segments, complications, treatment, quality of life (PedsQL 4.0), and pain were analyzed. Central and dispersion measures were estimated. A univariate analysis between the quality of life and study variables was done. Results. A total of 50 patients were included; 29 were males. Median age: 9.95 (r: 1.4417.81) years. The most common diagnosis was PIK3CA-related overgrowth spectrum (PROS) (37/50). The median number of affected segments was 2 (r: 17) per patient. Vascular malformations were observed in 40, and capillary malformations, in 20 patients. Pain was the most common complication (24/50). An asymmetry of the lower extremities of < 5 cm was observed in 31 patients. In most children, height was between the 50th and 97th percentiles. A lower HRQoL was observed among girls, patients with complex vascular malformations, and those with unmet basic needs (UBNs). Conclusions. PROS was the most common diagnosis. Pain was the most common complication. HRQoL was lower among girls, patients with combined vascular malformations, and those with UBNs.
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Humanos , Preescolar , Niño , Adolescente , Calidad de Vida , Malformaciones Vasculares , Dolor , Síndrome , Transducción de Señal , Estudios Transversales , MutaciónRESUMEN
Introduction. Segmental overgrowth syndromes are a group of rare diseases characterized by overgrowth in one or more parts of the body, mostly related to mosaic mutations in the AKT/PI3K/mTOR and RAS- MAPK signaling pathway. Our objective was to analyze the clinical and auxological characteristics and health-related quality of life (HRQoL) in this group of patients at a tertiary care hospital. Population and methods. Cross-sectional study of a follow-up cohort. Age, sex, sociodemographic data, anthropometric measurements of the affected and contralateral segments, complications, treatment, quality of life (PedsQL 4.0), and pain were analyzed. Central and dispersion measures were estimated. A univariate analysis between the quality of life and study variables was done. Results. A total of 50 patients were included; 29 were males. Median age: 9.95 (r: 1.44-17.81) years. The most common diagnosis was PIK3CA-related overgrowth spectrum (PROS) (37/50). The median number of affected segments was 2 (r: 1-7) per patient. Vascular malformations were observed in 40, and capillary malformations, in 20 patients. Pain was the most common complication (24/50). An asymmetry of the lower extremities of < 5 cm was observed in 31 patients. In most children, height was between the 50th and 97th percentiles. A lower HRQoL was observed among girls, patients with complex vascular malformations, and those with unmet basic needs (UBNs). Conclusions. PROS was the most common diagnosis. Pain was the most common complication. HRQoL was lower among girls, patients with combined vascular malformations, and those with UBNs.
Introducción. Los síndromes de sobrecrecimiento corporal segmentario son un grupo de enfermedades poco frecuentes caracterizadas por exceso de crecimiento en una o más partes del cuerpo relacionadas, en su mayoría, con mutaciones en mosaico en la vía de señalización AKT/PI3K/mTOR y RAS-MAPK. Nuestro objetivo fue analizar las características clínicas y auxológicas, y la calidad de vida relacionada a salud (CVRS) en este grupo de pacientes en un hospital de tercer nivel de atención. Población y métodos. Estudio transversal de una cohorte en seguimiento. Se analizaron edad, sexo, datos sociodemográficos, mediciones antropométricas del segmento afectado y del contralateral, complicaciones, tratamiento, calidad de vida (PedsQL4.0) y dolor. Se calcularon medidas centrales y de dispersión. Se realizó análisis univariado entre calidad de vida y variables incluidas. Resultados. Se incluyeron 50 pacientes, 29 varones. Mediana de edad 9,95 (r 1,44-17,81) años. El diagnóstico más frecuente fue síndrome de sobrecrecimiento relacionado a PIK3CA (PROS) (37/50). Mediana de número de segmentos afectados 2 (r: 1-7) por niño. Cuarenta casos presentaron malformación vascular; 20, capilar. El dolor (24/50) fue la complicación más frecuente. Treinta y un pacientes mostraron asimetría de longitud de miembros inferiores, < 5 cm. La estatura se ubicó entre los centilos 50 y 97 en la mayoría de los niños. Menor CVRS se observó en mujeres, en pacientes con malformación vascular compleja y necesidades básicas insatisfechas (NBI). Conclusiones. PROS fue el diagnóstico más frecuente. El dolor fue una complicación frecuente. La CVRS fue menor en mujeres, pacientes con malformación vascular combinada y NBI.
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Calidad de Vida , Malformaciones Vasculares , Masculino , Femenino , Humanos , Niño , Adolescente , Estudios Transversales , Transducción de Señal , Mutación , Síndrome , DolorRESUMEN
OBJECTIVES: The aim of this study was to describe the practice variation in dispensation of secondary stroke preventive drugs among patients at different primary care centres (PCCs) in Stockholm region and to identify factors that may explain the variation. DESIGN: Cohort study using administrative data from the Stockholm region. SETTING: Stockholm Health Care Region, Sweden, serving a population of 2.3 million inhabitants, hospital and PCC data. PARTICIPANTS: All patients (n=9761) with ischaemic stroke treated in hospital from 1 July 2009 to 30 June 2014 were included. Of these, 7562 patients registered with 187 PCCs were analysed. Exclusion criteria were; deceased patients, age <18, haemorrhagic stroke and/or switching PCC. PRIMARY AND SECONDARY OUTCOME MEASURES: As primary outcome the impact of PCC organisation variables and patient characteristics on the dispensation of statins, antiplatelets, antihypertensives and anticoagulants were analysed. Secondarily, the unadjusted practice variation of preventive drug dispensation of 187 PCCs is described. RESULTS: There was up to fourfold practice variation in dispensation of all secondary preventive drugs. Factors associated with a lower level of dispensed statins were privately run PCCs (OR 0.91 (95% CI 0.82 to 1.00)) and the patient being woman. Increased statin use was associated with a higher number of specialists in family medicine (OR 1.03 (95% CI 1.01 to 1.05)) and a higher proportion of patients registered with a specific physician (OR 1.37 (95% CI 1.11 to 1.68)). Women had on average a lower number of dispensed antihypertensives. CONCLUSIONS: A high practice variation for dispensation of all secondary preventive drugs was observed. Patient and PCC level factors indicating good continuity of care and high level of general practitioner education were associated with higher use of statins. Findings are of importance to policymakers as well as individual providers of care, and more research and actions are needed to minimise inequality in healthcare.
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Isquemia Encefálica , Médicos Generales , Inhibidores de Hidroximetilglutaril-CoA Reductasas , Accidente Cerebrovascular Isquémico , Accidente Cerebrovascular , Humanos , Femenino , Accidente Cerebrovascular/prevención & control , Estudios de Cohortes , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Antihipertensivos/uso terapéutico , Atención Primaria de SaludRESUMEN
Integrated Complex Treatment for Extreme Anorexia Nervosa; An Interdisciplinary Treatment Concept of the University Hospital Zurich Abstract. The serious physical mental and psychosocial morbidity due to anorexia nervosa is often perceived by sufferers as less serious than from their environment. Doctors and other healthcare professionals are therefore confronted with the difficulty that urgent medical treatment is considered as unnecessary or even threatening by those affected. Although patients with anorexia nervosa usually wish to improve their condition, they are usually only able to tolerate treatment aimed at normalizing eating behavior and gaining weight in response to high external pressure. In view of this situation, an interdisciplinary team with experience in these treatments is required to treat these patients. Close cooperation is necessary to ensure a supporting treatment framework.
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Anorexia Nerviosa , Anorexia Nerviosa/terapia , Terapia Combinada , Hospitales Universitarios , Humanos , Pacientes Internos , Aumento de PesoRESUMEN
The development of cervical cancer is frequently accompanied by the integration of human papillomaviruses (HPV) DNA into the host genome. Viral-cellular junction sequences, which arise in consequence, are highly tumor specific. By using these fragments as markers for tumor cell origin, we examined cervical cancer clonality in the context of intra-tumor heterogeneity. Moreover, we assessed the potential of these fragments as molecular tumor markers and analyzed their suitability for the detection of circulating tumor DNA in sera of cervical cancer patients. For intra-tumor heterogeneity analyses tumors of 8 patients with up to 5 integration sites per tumor were included. Tumor islands were micro-dissected from cryosections of several tissue blocks representing different regions of the tumor. Each micro-dissected tumor area served as template for a single junction-specific PCR. For the detection of circulating tumor-DNA (ctDNA) junction-specific PCR-assays were applied to sera of 21 patients. Samples were collected preoperatively and during the course of disease. In 7 of 8 tumors the integration site(s) were shown to be homogenously distributed throughout different tumor regions. Only one tumor displayed intra-tumor heterogeneity. In 5 of 21 analyzed preoperative serum samples we specifically detected junction fragments. Junction-based detection of ctDNA was significantly associated with reduced recurrence-free survival. Our study provides evidence that HPV-DNA integration is as an early step in cervical carcinogenesis. Clonality with respect to HPV integration opens new perspectives for the application of viral-cellular junction sites as molecular biomarkers in a clinical setting such as disease monitoring.
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Biomarcadores de Tumor/análisis , ADN Tumoral Circulante/genética , Neoplasias del Cuello Uterino/genética , Neoplasias del Cuello Uterino/virología , Adulto , Anciano , Biomarcadores de Tumor/genética , Sistema Libre de Células , ADN Viral/genética , Femenino , Humanos , Masculino , Persona de Mediana Edad , Papillomaviridae/genética , Infecciones por Papillomavirus/diagnóstico , Infecciones por Papillomavirus/virología , Reacción en Cadena de la Polimerasa , Células Tumorales CultivadasRESUMEN
The organohalide-respiring Epsilonproteobacterium Sulfurospirillum multivorans is able to grow with hydrogen as electron donor and with tetrachloroethene (PCE) as electron acceptor; PCE is reductively dechlorinated to cis-1,2-dichloroethene. Recently, a genomic survey revealed the presence of four gene clusters encoding NiFe hydrogenases in its genome, one of which is presumably periplasmic and membrane-bound (MBH), whereas the remaining three are cytoplasmic. To explore the role and regulation of the four hydrogenases, quantitative real-time PCR and biochemical studies were performed with S. multivorans cells grown under different growth conditions. The large subunit genes of the MBH and of a cytoplasmic group 4 hydrogenase, which is assumed to be membrane-associated, show high transcript levels under nearly all growth conditions tested, pointing toward a constitutive expression in S. multivorans. The gene transcripts encoding the large subunits of the other two hydrogenases were either not detected at all or only present at very low amounts. The presence of MBH under all growth conditions tested, even with oxygen as electron acceptor under microoxic conditions, indicates that MBH gene transcription is not regulated in contrast to other facultative hydrogen-oxidizing bacteria. The MBH showed quinone-reactivity and a characteristic UV/VIS spectrum implying a cytochrome b as membrane-integral subunit. Cell extracts of S. multivorans were subjected to native polyacrylamide gel electrophoresis (PAGE) and hydrogen oxidizing activity was tested by native staining. Only one band was detected at about 270 kDa in the particulate fraction of the extracts, indicating that there is only one hydrogen-oxidizing enzyme present in S. multivorans. An enrichment of this enzyme and SDS PAGE revealed a subunit composition corresponding to that of the MBH. From these findings we conclude that the MBH is the electron-donating enzyme system in the PCE respiratory chain. The roles for the other three hydrogenases remain unproven. The group 4 hydrogenase might be involved in hydrogen production upon fermentative growth.
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AIMS: Hypercholesterolaemia is a major risk factor for cardiovascular diseases and has been shown to influence angiogenesis in the hind limb ischaemia (HLI) model. The impaired up-regulation of angiogenic factors seems to be one of the underlying mechanisms for reduced vessel formation. Since we found that secretoneurin (SN) is up-regulated in hypoxic skeletal muscle cells and exerts beneficial effects in myocardial and HLI, we hypothesized that SN therapy might improve neovascularization in hypercholesterolaemic Apo E(-/-) (Apo E knockout) mice suffering from an impaired vascular response. METHODS AND RESULTS: For in vitro experiments, endothelial cells (ECs) were incubated with oxidized low-density lipoprotein (oxLDL) to mimic hypercholesterolaemia. EC function was impaired by oxLDL, but SN induced EC proliferation and in vitro tube formation under these conditions. In the HLI model, injection of SN plasmid resulted in a significant better outcome regarding blood flow recovery, amputation rate, and vessel density. In the myocardial infarction (MI) model, the SN group showed improvement in cardiac parameters. Aortic plaque area was not influenced by local SN injection. Interestingly, SN-induced recruitment of angiogenic monocytic cells was abolished under hypercholesterolaemia. CONCLUSIONS: SN gene therapy exerts beneficial effects in cardiovascular animal models in Apo E(-/-) mice without influencing atherosclerosis and might qualify as a promising therapy for cardiovascular disorders.
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Apolipoproteínas E/deficiencia , Terapia Genética , Isquemia/terapia , Isquemia Miocárdica/terapia , Neuropéptidos/genética , Neuropéptidos/uso terapéutico , Secretogranina II/genética , Secretogranina II/uso terapéutico , Animales , Apolipoproteínas E/genética , Aterosclerosis/genética , Aterosclerosis/fisiopatología , Aterosclerosis/terapia , Modelos Animales de Enfermedad , Células Endoteliales/efectos de los fármacos , Células Endoteliales/patología , Células Endoteliales/fisiología , Miembro Posterior/irrigación sanguínea , Células Endoteliales de la Vena Umbilical Humana , Humanos , Hipercolesterolemia/genética , Hipercolesterolemia/fisiopatología , Hipercolesterolemia/terapia , Isquemia/genética , Isquemia/fisiopatología , Lipoproteínas LDL/administración & dosificación , Lipoproteínas LDL/metabolismo , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Modelos Cardiovasculares , Infarto del Miocardio/genética , Infarto del Miocardio/fisiopatología , Infarto del Miocardio/terapia , Isquemia Miocárdica/genética , Isquemia Miocárdica/fisiopatología , Neovascularización Fisiológica/genética , Neovascularización Fisiológica/fisiología , Neuropéptidos/fisiología , Secretogranina II/fisiologíaRESUMEN
Allergic rhinitis (AR), nasal polyps (NP) as well as chronic rhinosinusitis (CRS) are all known to be associated with eosinophilic infiltration and elevated numbers of mast cells (MC) within the mucosa. Both cell types and their markers eosinophilic cationic protein (ECP) and tryptase are utilized in the diagnosis and management of chronic sino-nasal diseases. Mucosal cytology samples were gathered by cytobrush, histological samples were obtained from the inferior turbinate. In both sample sets, the number of eosinophils and MC was determined. Their corresponding markers ECP and tryptase were quantified from nasal discharge. Patients were grouped with reference to their main diagnosis: AR (n = 34), NP (n = 25), CRS (n = 27) and controls (n = 34). Eosinophil counts from cytobrush and ECP levels were significantly elevated in NP compared to all other groups-31- and 13-fold over control, respectively. However, histologic review did not reveal any difference in eosinophil count among groups. Tryptase was significantly elevated threefold in AR versus CRS and controls. No correlation to cytological and histological MC counts could be found. ECP levels in nasal discharge as well as eosinophil counts can provide useful information with regard to the diagnosis. Likewise, tryptase concentrations can do. The presented data show that the measurement of markers in nasal discharge is superior in differentiating among diagnosis groups. Given that the collection of nasal secretions is more comfortable for patients than the more invasive techniques, we recommend first line ECP and tryptase testing performed on nasal secretions.
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Eosinófilos/citología , Mastocitos/citología , Moco/citología , Mucosa Nasal/patología , Pólipos Nasales/patología , Rinitis Alérgica Perenne/patología , Rinitis/patología , Sinusitis/patología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores , Estudios de Casos y Controles , Enfermedad Crónica , Proteína Catiónica del Eosinófilo/metabolismo , Eosinófilos/metabolismo , Femenino , Humanos , Masculino , Mastocitos/metabolismo , Persona de Mediana Edad , Moco/metabolismo , Mucosa Nasal/citología , Mucosa Nasal/metabolismo , Pólipos Nasales/metabolismo , Rinitis/metabolismo , Rinitis Alérgica , Rinitis Alérgica Perenne/metabolismo , Sinusitis/metabolismo , Triptasas/metabolismo , Cornetes Nasales/citología , Cornetes Nasales/metabolismo , Cornetes Nasales/patología , Adulto JovenRESUMEN
BACKGROUND AND OBJECTIVES: Treatment options for oesophageal cancer have changed considerably over the last decades with the introduction of multimodal treatment concepts dominating the progress in the field. However, it remains unclear in how far the documented scientific progress influenced and changed the daily routine practice. Since most patients with oesophageal cancer generally suffer from reduced overall health conditions it is uncertain how high the proportion of aggressive treatments is and whether outcomes are improved substantially. In order to gain insight into this we performed a retrospective analysis of patients treated at a larger tertiary referral centre over time course of 25 years. PATIENTS AND METHODS: Data of all patients diagnosed with squamous cell carcinoma (SCC) and adenocarcinoma (AC) of the oesophagus, treated between 1983 and 2007 in the department of radiation oncology of the LMU, were obtained. The primary endpoint of the data collection was overall survival (calculated from the date of diagnosis until death or last follow up). Changes in basic clinical characteristics, treatment approach and the effect on survival were analysed after dividing the cohort into five subsequent time periods (I-V) with 5 years each. In a second analysis any pattern of change regarding the use of radio(chemo)therapy (R(C)T) with and without surgery was determined. RESULTS: In total, 503 patients with SCC (78.5%) and AC (18.9%) of the oesophagus were identified. The average age was 60 years (range 35-91 years). 56.5% of the patients were diagnose with advanced UICC stages III-IV. R(C)T was applied to 353 (70.2%) patients; R(C)T+ surgery was performed in 134 (26.6%) patients, 63.8% of all received chemotherapy (platinum-based 5.8%, 5-fluorouracil (5-FU)12.1%, 42.3% 5-FU and mitomycin C (MMC)). The median follow-up period was 4.3 years. The median overall survival was 21.4 months. Over the time, patients were older, the formal tumour stage was more advanced, the incidence of AC was higher and the intensified treatment had a higher prevalence. However there was only a trend for an improved OS over the years with no difference between RCT with or without surgery (p = 0.09). The use of radiation doses over 54 Gy and the addition of chemotherapy (p = 0.002) were associated with improved OS. CONCLUSION: Although more complex treatment protocols were introduced into clinical routine, only a minor progress in OS rates was detectable. Main predictors of outcome in this cohort was the addition of chemotherapy. The addition of surgery to radio-chemotherapy may only be of value for very limited patient groups.
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Neoplasias Esofágicas/terapia , Adenocarcinoma/epidemiología , Adenocarcinoma/terapia , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Células Escamosas/epidemiología , Carcinoma de Células Escamosas/terapia , Quimioradioterapia/estadística & datos numéricos , Quimioradioterapia/tendencias , Quimioterapia Adyuvante/estadística & datos numéricos , Quimioterapia Adyuvante/tendencias , Terapia Combinada/tendencias , Neoplasias Esofágicas/epidemiología , Esofagectomía/estadística & datos numéricos , Esofagectomía/tendencias , Femenino , Estudios de Seguimiento , Alemania/epidemiología , Departamentos de Hospitales/estadística & datos numéricos , Hospitales Universitarios/estadística & datos numéricos , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Mitomicina/administración & dosificación , Compuestos Organoplatinos/administración & dosificación , Oncología por Radiación/estadística & datos numéricos , Radioterapia Adyuvante/estadística & datos numéricos , Radioterapia Adyuvante/tendencias , Estudios Retrospectivos , Resultado del TratamientoAsunto(s)
Terapia Neoadyuvante , Neoplasias del Recto/tratamiento farmacológico , Neoplasias del Recto/radioterapia , Antimetabolitos Antineoplásicos/efectos adversos , Antimetabolitos Antineoplásicos/uso terapéutico , Quimioterapia Adyuvante , Terapia Combinada , Fluorouracilo/efectos adversos , Fluorouracilo/uso terapéutico , Humanos , Estadificación de Neoplasias , Calidad de Vida , Traumatismos por Radiación/etiología , Radioterapia Adyuvante , Neoplasias del Recto/patología , Neoplasias del Recto/cirugía , Tasa de SupervivenciaRESUMEN
Since the 1980s major advances in surgery, radiotherapy and chemotherapy have established multimodal approaches as curative treatment options for oesophageal cancer. In addition the introduction of functional imaging modalities such as PET-CT created new opportunities for a more adequate patient selection and therapy response assessment.The majority of oesophageal carcinomas are represented by two histologies: squamous cell carcinoma and adenocarcinoma. In recent years an epidemiological shift towards the latter was observed. From a surgical point of view, adenocarcinomas, which are usually located in the distal third of the oesophagus, may be treated with a transhiatal resection, whereas squamous cell carcinomas, which are typically found in the middle and the upper third, require a transthoracic approach. Since overall survival after surgery alone is poor, multimodality approaches have been developed. At least for patients with locally advanced tumors, surgery alone can no longer be advocated as routine treatment. Nowadays, scientific interest is focused on tumor response to induction radiochemotherapy. A neoadjuvant approach includes the early and accurate assessment of clinical response, optimally performed by repeated PET-CT imaging and endoscopic ultrasound, which may permit early adaption of the therapeutic concept. Patients with SCC that show clinical response by PET CT are considered to have a better prognosis, regardless of whether surgery will be performed or not. In non-responding patients salvage surgery improves survival, especially if complete resection is achieved.
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Carcinoma/terapia , Neoplasias Esofágicas/terapia , Adenocarcinoma/terapia , Carcinoma de Células Escamosas/terapia , Quimioterapia Adyuvante , Ensayos Clínicos como Asunto , Terapia Combinada/métodos , Humanos , Oncología Médica/métodos , Tomografía de Emisión de Positrones/métodos , Pronóstico , Radioterapia Adyuvante , Tomografía Computarizada por Rayos X/métodos , Resultado del TratamientoRESUMEN
Expression of the pluripotency factors SOX-2, OCT-4, KLF-4, and NANOG was analyzed by quantitative real-time polymerase chain reaction, immunohistochemistry, and immunofluorescence microscopy in the endometrium, myometrium, and endometriotic tissue of 36 patients. Aberrant expression of SOX-2 may indicate a stem cell origin of endometriosis, whereas the presence of all progenitor markers in endometrial tissue marks the endometrium as a potential source for induced pluripotent stem cell generation.
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Biomarcadores/metabolismo , Endometriosis , Endometrio/fisiología , Células Madre Pluripotentes/fisiología , Factores de Transcripción SOXB1/genética , Adulto , Endometriosis/genética , Endometriosis/metabolismo , Endometriosis/patología , Endometrio/patología , Femenino , Expresión Génica/fisiología , Proteínas de Homeodominio/genética , Humanos , Factor 4 Similar a Kruppel , Factores de Transcripción de Tipo Kruppel/genética , Persona de Mediana Edad , Proteína Homeótica Nanog , Factor 3 de Transcripción de Unión a Octámeros/genética , Células Madre Pluripotentes/citología , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Factores de Transcripción SOXB1/metabolismo , Nicho de Células Madre/patología , Nicho de Células Madre/fisiología , Células del Estroma/citología , Células del Estroma/fisiologíaRESUMEN
BACKGROUND AND PURPOSE: For definitive radiochemotherapy, 5-fluorouracil/cisplatin protocols have been considered the standard of care for esophageal carcinoma over the last 2 decades. By contrast, most patients treated at the University Hospital, LMU Munich, Germany, received 5-fluorouracil/mitomycin C. The objective of this retrospective analysis was to determine the value of 5-fluorouracil/mitomycin-C-based therapy. PATIENTS AND METHODS: Tumor stage, treatment received, and outcome data of patients treated for esophageal cancer between 1982 and 2007 were collected; endpoint of the analysis was overall survival. RESULTS: 298 patients with inoperable cancer of the esophagus were identified (16.8% adenocarcinoma, 77.5% squamous cell carcinoma). At diagnosis, 61.7% (184/298) had UICC stage III-IV, 54.4% (162/298) positive lymph nodes, and 26.5% (79/298) metastatic disease. 74.5% of all patients (222/298) received radiation doses between 55 and 65 Gy, 65.8% (196/298) were subjected to concomitant chemotherapy. The median follow-up period (patients alive) was 4.1 years. A significant increase of overall survival (p < 0.0001) in the radiochemotherapy versus the radiotherapy-alone group was observed. 52% (102/196) in the 5-fluorouracil/ mitomycin C group had tumor stages comparable to the RTOG 85-01 study cohort (T1-3 N0-1 M0). The median survival in this subgroup was 18.2 months, 3- and 5-year survival rates were 22.7% (21/102) and 15.0% (13/102), respectively. CONCLUSION: Despite being nominally inferior to platinum-based radiochemotherapy, the overall survival rates are in a similar range. Thus, the mitomycin-C-based radiochemotherapy approach may considered to be as effective as the standard therapy. However, there is no randomized trial available in order to prove the equality.
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Adenocarcinoma/tratamiento farmacológico , Adenocarcinoma/radioterapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Células Escamosas/tratamiento farmacológico , Carcinoma de Células Escamosas/radioterapia , Neoplasias Esofágicas/tratamiento farmacológico , Neoplasias Esofágicas/radioterapia , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Terapia Combinada , Neoplasias Esofágicas/mortalidad , Neoplasias Esofágicas/patología , Femenino , Fluorouracilo/administración & dosificación , Fluorouracilo/efectos adversos , Alemania , Humanos , Masculino , Persona de Mediana Edad , Mitomicina/administración & dosificación , Mitomicina/efectos adversos , Estadificación de Neoplasias , Dosificación Radioterapéutica , Planificación de la Radioterapia Asistida por Computador , Sistema de Registros , Estudios Retrospectivos , Análisis de SupervivenciaRESUMEN
BACKGROUND: Piperacillin-tazobactam (PIP/TAZO) has been extensively used in adults with nosocomial infections and with fever and neutropenia. The available data considering the use of PIP/TAZO have not been reviewed in detail. OBJECTIVE: Review discussing the use of PIP/TAZO in neonatal and paediatric patients. METHODS: Medline search focusing on articles published in English. Owing to the paucity of randomized controlled trails, uncontrolled studies and case series were included. RESULTS/CONCLUSION: PIP/TAZO may safely be used in paediatric patients as an empiric treatment for serious infections in hospital environments where resistance to common first-line antimicrobials has emerged. The most common indications in paediatric patients are nosocomial infections owing to resistant Gram-negatives, exacerbation of pulmonary colonization with Psuedomonas aeruginosa in patients with cystic fibrosis, intra-abdominal infections, fever and neutropenia in paediatric cancer patients. The influence of PIP/TAZO routine use on the selection of extended-spectrum beta-lactamase producing Gram-negatives and on the prevalence of vancomycin-resistant enterococci is still a matter of debate. In particular the use of PIP/TAZO in neonates and PIP/TAZO monotherapy in paediatric cancer patients with fever and neutropenia should be investigated in prospective randomized studies including a sufficient number of patients.
Asunto(s)
Infección Hospitalaria/tratamiento farmacológico , Antibacterianos/administración & dosificación , Antibacterianos/efectos adversos , Antibacterianos/uso terapéutico , Niño , Ensayos Clínicos como Asunto , Infección Hospitalaria/prevención & control , Humanos , Recién Nacido , Ácido Penicilánico/administración & dosificación , Ácido Penicilánico/efectos adversos , Ácido Penicilánico/análogos & derivados , Ácido Penicilánico/uso terapéutico , Piperacilina/administración & dosificación , Piperacilina/efectos adversos , Piperacilina/uso terapéutico , Combinación Piperacilina y TazobactamRESUMEN
The RNA-processing exosome is a complex of riboexonucleases required for 3'-end formation of some noncoding RNAs and for the degradation of mRNAs in eukaryotes. The nuclear form of the exosome functions in an mRNA surveillance pathway that retains and degrades improperly processed precursor mRNAs within the nucleus. We report here that the nuclear exosome controls the level of NAB2 mRNA, encoding the nuclear poly(A)+-RNA-binding protein Nab2p. Mutations affecting the activity of the nuclear, but not the cytoplasmic, exosome cause an increase in the amount of NAB2 mRNA. Cis- and trans-acting mutations that inhibit degradation by the nuclear-exosome subunit Rrp6p result in elevated levels of NAB2 mRNA. Control of NAB2 mRNA levels occurs posttranscriptionally and requires a sequence of 26 consecutive adenosines (A26) in the NAB2 3' untranslated region, which represses NAB2 3'-end formation and sensitizes the transcript to degradation by Rrp6p. Analysis of NAB2 mRNA levels in a nab2-1 mutant and in the presence of excess Nab2p indicates that Nab2p activity negatively controls NAB2 mRNA levels in an A26- and Rrp6p-dependent manner. These findings suggest a novel regulatory circuit in which the nuclear exosome controls the level of NAB2 mRNA in response to changes in the activity of Nab2 protein.
Asunto(s)
Exorribonucleasas/fisiología , Regulación Fúngica de la Expresión Génica , Proteínas de Transporte Nucleocitoplasmático/genética , Procesamiento Postranscripcional del ARN/genética , ARN Mensajero/metabolismo , Proteínas de Unión al ARN/genética , Proteínas de Saccharomyces cerevisiae/genética , Proteínas de Saccharomyces cerevisiae/fisiología , Regiones no Traducidas 3'/genética , Regiones no Traducidas 3'/metabolismo , Secuencia de Bases , Núcleo Celular/metabolismo , Exorribonucleasas/genética , Complejo Multienzimático de Ribonucleasas del Exosoma , Expresión Génica/genética , Datos de Secuencia Molecular , Mutación/genética , Proteínas de Transporte Nucleocitoplasmático/fisiología , Poli A/genética , Poli A/metabolismo , Proteínas de Unión a Poli(A)/metabolismo , Estabilidad del ARN , ARN de Hongos/metabolismo , Proteínas de Unión al ARN/fisiología , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Saccharomyces cerevisiae/fisiologíaRESUMEN
Immunocompetent alloreactive donor lymphocytes directed against minor histocompatibility antigens are supposed to be responsible for graft-versus-host disease (GvHD) and graft-versus-leukemia (GvL) activity after allogeneic stem cell transplantation. The authors describe the detection of HA-1-specific T cells by peptide-loaded dimers and flow cytometry in the peripheral blood of a patient in complete remission but without GvHD after donor lymphocyte infusion for chemotherapy-resistant Philadelphia chromosome-positive acute lymphoblastic leukemia. The HA-1-specific T cells were sorted and an alloreactive, polyclonal T-cell line with specific lytic activity against HA-1-positive target cells, including leukemic cells, was established. Although P190 bcr/abl peptide-specific CD8positive T cells were detected in the peripheral blood at the same time, these T cells could not be expanded. Furthermore, no P190 bcr/abl peptide-specific T-cell response could be induced in vitro, even when peptide-loaded dendritic cells were used as stimulator cells. The authors conclude that in the absence of GvHD, HA-1-specific rather than P190 bcr/abl-specific T cells are responsible for ongoing GvL activity.
Asunto(s)
Linaje de la Célula , Trasplante de Células , Efecto Injerto vs Leucemia , Antígenos HLA-A/química , Células Madre Hematopoyéticas/citología , Inmunoterapia/métodos , Leucemia/terapia , Linfocitos/citología , Antígenos de Histocompatibilidad Menor/inmunología , División Celular , Células Dendríticas/citología , Dimerización , Citometría de Flujo , Antígeno HLA-A2 , Humanos , Oligopéptidos , Péptidos/química , Fenotipo , Unión Proteica , Linfocitos T/metabolismoRESUMEN
Modern medicine faces the challenge of developing safer and more effective therapies to treat human diseases. Many drugs currently in use were discovered without knowledge of their underlying molecular mechanisms. Understanding their biological targets and modes of action will be essential to design improved second-generation compounds. Here, we describe the use of a genome-wide pool of tagged heterozygotes to assess the cellular effects of 78 compounds in Saccharomyces cerevisiae. Specifically, lanosterol synthase in the sterol biosynthetic pathway was identified as a target of the antianginal drug molsidomine, which may explain its cholesterol-lowering effects. Further, the rRNA processing exosome was identified as a potential target of the cell growth inhibitor 5-fluorouracil. This genome-wide screen validated previously characterized targets or helped identify potentially new modes of action for over half of the compounds tested, providing proof of this principle for analyzing the modes of action of clinically relevant compounds.