RESUMO
Aspiration of gastric contents is a recognised complication during all phases of anaesthesia. The risk of this event becomes more likely with repeated attempts at tracheal intubation. There is a lack of clinical data on the effectiveness of videolaryngoscopy relative to direct laryngoscopy rapid sequence intubation in the operating theatre. We hypothesised that the use of a videolaryngoscope during rapid sequence intubation would be associated with a higher first pass tracheal intubation success rate than conventional direct laryngoscopy. In this multicentre randomised controlled trial, 1000 adult patients requiring tracheal intubation for elective, urgent or emergency surgery were allocated randomly to airway management using a McGrath™ MAC videolaryngoscope (Medtronic, Minneapolis, MN, USA) or direct laryngoscopy. Both techniques used a Macintosh blade. First-pass tracheal intubation success was higher in patients allocated to the McGrath group (470/500, 94%) compared with those allocated to the direct laryngoscopy group (358/500, 71.6%), odds ratio (95%CI) 1.31 (1.23-1.39); p < 0.001. This advantage was observed in both trainees and consultants. Cormack and Lehane grade ≥ 3 view occurred less frequently in patients allocated to the McGrath group compared with those allocated to the direct laryngoscopy group (5/500, 1% vs. 94/500, 19%, respectively; p < 0.001). Tracheal intubation with a McGrath videolaryngoscope was associated with a lower rate of adverse events compared with direct laryngoscopy (13/500, 2.6% vs. 61/500, 12.2%, respectively; p < 0.001). These findings suggest that the McGrath videolaryngoscope is superior to a conventional direct laryngoscope for rapid sequence intubation in the operating theatre.
Assuntos
Intubação Intratraqueal , Laringoscópios , Laringoscopia , Indução e Intubação de Sequência Rápida , Humanos , Laringoscopia/métodos , Laringoscopia/instrumentação , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Intubação Intratraqueal/métodos , Intubação Intratraqueal/instrumentação , Idoso , Indução e Intubação de Sequência Rápida/métodos , Gravação em Vídeo , Salas Cirúrgicas , Técnicas e Procedimentos Assistidos por VídeoRESUMO
We investigated whether T cell-recruiting bispecific anti-CD3/GD2 antibody NG-CU might be an alternative to therapeutic anti-GD2 monoclonal antibody (mAb) ch14.18, mediating complement-dependent cytotoxicity (CDC) and antibody-dependent cell-mediated cytotoxicity (ADCC) through natural killer (NK) cells for immunotherapy in high-risk/relapsed neuroblastoma after autologous/allogeneic stem cell transplantation (auto/alloSCT). Different antibody concentrations and effector-to-target ratios (E:T) were evaluated using xCELLigence RTCA system, peripheral blood mononuclear cells (PBMCs) (healthy donors and patients after alloSCT), and neuroblastoma cell lines (LS/LAN-1). Mean specific lysis of LS cells utilizing PBMCs from healthy donors and ch14.18 (1 µg/ml) was 40/66/75% after 12/24/48 h compared to 66/93/100% in the presence of NG-CU (100 ng/ml). NG-CU showed enhanced cytotoxicity compared to ch14.18, even at lower concentrations and E:T ratios, and completely eradicated LS cells after 72 h. To decipher the influence of effector cell subsets on lysis, different ratios of T and NK cells were tested. At a ratio of 1:1, ch14.18 was more effective than NG-CU. Using patient PBMCs taken at different time points posttransplant, significant lysis with both constructs was detectable depending on percentages and total numbers of T and NK cells; in the early posttransplant phase, NK cells were predominant and ch14.18 was superior, whereas later on, T cells represented the majority of immune cells and NG-CU was more effective. Our study highlights the importance of analyzing effector cell subsets in patients before initiating antibody-based therapy. Consequently, we propose an adjusted administration of both antibody constructs, considering the state of posttransplant immune recovery, to optimize anti-tumor activity.
Assuntos
Anticorpos Biespecíficos , Antineoplásicos , Neuroblastoma , Humanos , Leucócitos Mononucleares/metabolismo , Anticorpos Monoclonais/uso terapêutico , Antineoplásicos/uso terapêutico , Citotoxicidade Celular Dependente de Anticorpos , Neuroblastoma/tratamento farmacológico , Anticorpos Biespecíficos/farmacologia , Anticorpos Biespecíficos/uso terapêutico , GangliosídeosRESUMO
In the cold dark matter cosmology, the baryonic components of galaxies-stars and gas-are thought to be mixed with and embedded in non-baryonic and non-relativistic dark matter, which dominates the total mass of the galaxy and its dark-matter halo. In the local (low-redshift) Universe, the mass of dark matter within a galactic disk increases with disk radius, becoming appreciable and then dominant in the outer, baryonic regions of the disks of star-forming galaxies. This results in rotation velocities of the visible matter within the disk that are constant or increasing with disk radius-a hallmark of the dark-matter model. Comparisons between the dynamical mass, inferred from these velocities in rotational equilibrium, and the sum of the stellar and cold-gas mass at the peak epoch of galaxy formation ten billion years ago, inferred from ancillary data, suggest high baryon fractions in the inner, star-forming regions of the disks. Although this implied baryon fraction may be larger than in the local Universe, the systematic uncertainties (owing to the chosen stellar initial-mass function and the calibration of gas masses) render such comparisons inconclusive in terms of the mass of dark matter. Here we report rotation curves (showing rotation velocity as a function of disk radius) for the outer disks of six massive star-forming galaxies, and find that the rotation velocities are not constant, but decrease with radius. We propose that this trend arises because of a combination of two main factors: first, a large fraction of the massive high-redshift galaxy population was strongly baryon-dominated, with dark matter playing a smaller part than in the local Universe; and second, the large velocity dispersion in high-redshift disks introduces a substantial pressure term that leads to a decrease in rotation velocity with increasing radius. The effect of both factors appears to increase with redshift. Qualitatively, the observations suggest that baryons in the early (high-redshift) Universe efficiently condensed at the centres of dark-matter haloes when gas fractions were high and dark matter was less concentrated.
RESUMO
PURPOSE: This retrospective analysis aims to address the toxicity and efficacy of a modified total nodal irradiation (TNI)-based conditioning regimen before haploidentical hematopoietic cell transplantation (HCT) in pediatric patients. MATERIALS AND METHODS: Patient data including long-term follow-up were evaluated of 7 pediatric patients with malignant (nâ¯= 2) and non-malignant diseases (nâ¯= 5) who were treated by a primary TNI-based conditioning regimen. TNI was performed using anterior/posterior opposing fields. All patients received 7â¯Gy single-dose TNI combined with systemic agents followed by an infusion of peripheral blood stem cells (nâ¯= 7). All children had haploidentical family donors. RESULTS: Engraftment was reached in 6/7 children after a median time of 9.5 days; 1 child had primary graft failure but was successfully reconditioned shortly thereafter. After an average follow-up time of 103.5 months (range 8.8-138.5 months), event-free (EFS) and overall survival (OS) rates were 71.4% and 85.7%, respectively. One child with a non-malignant disease died 8.8 months after transplantation due to a relapse and a multiple organ failure. Follow-up data was available for 5/6 long-term survivors with a median follow-up (FU) of 106.2 months (range 54.5-138.5 months). Hypothyroidism and deficiency of sexual hormones was present in 3/5 patients each. Mean forced expiratory volume in 1â¯s (FEV1) after TNI was 71%; mean vital capacity (VC) was 78%. Growth failure (<â¯10th percentile) occurred in 2/5 patients (height) and 1/5 patient (weight). No secondary malignancies were reported. CONCLUSION: In this group of patients, a primary single-dose 7â¯Gy TNI-based conditioning regimen before HCT in pediatric patients allowed sustained engraftment combined with a tolerable toxicity profile leading to long-term OS/EFS. Late toxicity after a median FU of over 9 years includes growth failure, manageable hormonal deficiencies, and acceptable decrease in lung function.
Assuntos
Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Criança , Doença Enxerto-Hospedeiro/etiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Recidiva Local de Neoplasia/etiologia , Estudos Retrospectivos , Condicionamento Pré-Transplante/efeitos adversosRESUMO
OBJECTIVES: In 2019, there were 29 reported cases of measles in the Canton of Zurich, with two cases occurring among university students. In collaboration with the University of Zurich Travel Clinic, the Health Department of the Canton of Zurich offered free measles vaccination to all employees and students at the University of Zurich (UZH) and the Swiss Federal Institute of Technology (ETH). This short communication shares the results of this large measles vaccination campaign. STUDY DESIGN: Vaccination intervention campaign. METHODS: All employees and students at the UZH and ETH were informed via an email distribution list that they were eligible for cost-free consultation and measles vaccination (when indicated). Consultations and immunizations took place over the course of 3 days in June 2019 at the UZH Travel Clinic. All those who were missing one or two doses of measles vaccination, and had no contraindications, were vaccinated. Booster immunizations were offered until December 2019. RESULTS: A total of 411 individuals participated in the campaign. Thirty-five individuals (8.5%) were found to have sufficient measles vaccination on consultation and received no additional vaccination. A total of 376 individuals (91.5%) met the eligibility criteria and were vaccinated; 83 individuals (20.2% of all participants and 22.1% of those vaccinated) returned for a second vaccination. In total, the campaign saw 494 visits (including consultations without immunization and visits for second immunization). Demographic data were collected for 439 visits where measles vaccination was administered. From these, 51.7% were for an individual's first measles vaccine dose, 27.3% for a second dose, 18.9% for a booster immunization and 2.1% were unknown. 54.7% of campaign visits were made by females; and 45.0% of visits were made by those aged 18-29 years, 27.9% by those 30-39 years, 14.6% by those 40-49 years, and 12.6% by those 50+ years. 49.8% of visits were made by students and 48.5% by employees. More students needed the first dose (54.2% of first-dose visits), whereas more employees received booster immunization (57.8% of booster visits). CONCLUSIONS: The measles vaccination campaign was well attended, particularly by the younger age group 18-29 years and females. Coupled with intense media attention, such a campaign immediately following an outbreak may be an effective method to increase vaccination coverage.
Assuntos
Sarampo , Universidades , Adolescente , Adulto , Feminino , Humanos , Programas de Imunização , Sarampo/epidemiologia , Sarampo/prevenção & controle , Vacina contra Sarampo , Vacinação , Cobertura Vacinal , Adulto JovemRESUMO
BACKGROUND: Most serous ovarian cancers are now understood to originate in the fallopian tubes. Removing the tubes (salpingectomy) likely reduces the risk of developing high-grade serous ovarian cancer. Numerous gynaecological societies now recommend prophylactic (or opportunistic) salpingectomy at the time of gynaecological surgery in appropriate women, and this is widely done. Salpingectomy at the time of non-gynaecological surgery has not been explored and may present an opportunity for primary prevention of ovarian cancer. METHODS: This study investigated whether prophylactic salpingectomy with the intention of reducing the risk of developing ovarian cancer would be accepted and could be accomplished at the time of elective laparoscopic cholecystectomy. Women aged at least 45 years scheduled for elective laparoscopic cholecystectomy were recruited. They were counselled and offered prophylactic bilateral salpingectomy at the time of cholecystectomy. Outcome measures were rate of accomplishment of salpingectomy, time and procedural steps needed for salpingectomy, and complications. RESULTS: A total of 105 patients were included in the study. The rate of acceptance of salpingectomy was approximately 60 per cent. Salpingectomy was performed in 98 of 105 laparoscopic cholecystectomies (93·3 per cent) and not accomplished because of poor visibility or adhesions in seven (6·7 per cent). Median additional operating time was 13 (range 4-45) min. There were no complications attributable to salpingectomy. One patient presented with ovarian cancer 28 months after prophylactic salpingectomy; histological re-evaluation of the tubes showed a previously undetected, focal serous tubal intraepithelial carcinoma. CONCLUSION: Prophylactic salpingectomy can be done during elective laparoscopic cholecystectomy.
ANTECEDENTES: La mayoría de carcinomas serosos de ovario se originan en las trompas de Falopio. La exéresis de las trompas (salpingectomía) probablemente reduce el riesgo de desarrollar un carcinoma seroso ovárico de alto grado. Numerosas sociedades ginecológicas recomiendan efectuar una salpingectomía profiláctica (u oportunista) en el momento de una cirugía ginecológica en determinadas mujeres, y esta conducta está ampliamente difundida. Sin embargo, no se ha analizado la realización de la salpingectomía durante cirugías no ginecológicas como forma de prevención primaria del carcinoma ovárico. MÉTODOS: Determinar si la salpingectomía profiláctica con intención de reducir el riesgo de desarrollar cáncer de ovario sería aceptada y podría llevarse a cabo durante una colecistectomía laparoscópica electiva. Se reclutaron mujeres ≥ 45 años de edad programadas para colecistectomía laparoscópica electiva. A todas ellas se les aconsejó y ofreció la realización de una salpingectomía bilateral profiláctica en el momento de su colecistectomía. Las variables analizadas fueron la tasa de realización de la salpingectomía, la duración y las etapas quirúrgicos para efectuar este procedimiento, y las complicaciones. RESULTADOS: La aceptación de la salpingectomía fue aproximadamente del 60%. La salpingectomía se realizó en 98 de 105 colecistectomías laparoscópicas (93%) y no se pudo realizar en 7 pacientes (7%) por escasa visibilidad o adherencias. La mediana del tiempo quirúrgico adicional fue de 13 (rango 4-45) minutos. No hubo complicaciones atribuibles a la salpingectomía. Una paciente presentó cáncer de ovario 28 meses después de la salpingectomía profiláctica; la reevaluación histológica de las trompas mostró un carcinoma intraepitelial seroso focal tubárico (serous tubal intraepithelial carcinoma, STIC) no detectado previamente. CONCLUSIÓN: La salpingectomía profiláctica se puede realizar durante la colecistectomía laparoscópica electiva.
Assuntos
Carcinoma in Situ/prevenção & controle , Colecistectomia Laparoscópica , Procedimentos Cirúrgicos Eletivos , Neoplasias Ovarianas/prevenção & controle , Procedimentos Cirúrgicos Profiláticos , Salpingectomia , Adulto , Idoso , Estudos de Viabilidade , Feminino , Humanos , Pessoa de Meia-Idade , Duração da Cirurgia , Complicações Pós-Operatórias , Prevenção Primária , Salpingectomia/efeitos adversosRESUMO
AIM: To assess in a cross-sectional clinical study the effect of antibiotics on the diversity, structure and metabolic pathways of bacterial communities in various oral environments in patients with acute primary infections. METHODOLOGY: Samples of saliva (SA), supragingival biofilm (SB) and from the pulp cavity (PC) were collected from teeth with acute primary infections and then grouped according to previous use of antibiotics (NoAtb = no antibiotics [n = 6]; Atb = antibiotics [n = 6]). DNA sequencing was conducted using MiSeq (Illumina, San Diego, CA, USA). The V1-V3 hyper-variable region of the 16S rRNA gene was amplified. A custom Mothur pipeline was used for 16S rRNA processing. Subsequent analyses of the sequence dataset were performed in R (using vegan, phyloseq and ggplot2 packages) or QIIME. RESULTS: Twelve patients aged from 22 to 56 years were recruited. Participants in the Atb group had taken the beta-lactamics amoxicillin (5/6) or cephalexin (1/6) for 2-3 days. A total of 332 bacterial taxa (OTUs) were identified, belonging to 120 genera, 60 families and nine phyla. Firmicutes (41%) and Bacteroidetes (38%) were the most abundant phyla in all samples. Taxa clustered significantly by oral site (PCoA analysis; P < 0.05, ANOSIM). Use of antibiotics had little effect on this clustering. However, SA, SB and PC had different degrees of richness, diversity and evenness. The greatest diversity was observed in SB samples and the least diversity was observed in PC samples. Metabolic prediction identified 163 pathways and previous use of antibiotics had a major effect on the estimated functional clustering in SA and PC samples. CONCLUSION: The ecological niche had a strong influence on the bacterial content of samples from various oral sites. Previous exposure to antibiotics may exert an effect on the phylogenetic composition of SA. Metabolic pathways appear to be modulated by antimicrobial agents in SA and PC samples. The dynamics of host/microbial interactions in the apical region and the functional ecology of the infected pulp cavity should be revisited.
Assuntos
Microbiota , Adulto , Estudos Transversais , DNA Bacteriano , Humanos , Redes e Vias Metabólicas , Pessoa de Meia-Idade , Filogenia , RNA Ribossômico 16S/genética , Adulto JovemRESUMO
By implementation of sonography for regional anesthesia, truncal blocks became more relevant in the daily practice of anesthesia and pain therapy. Due to visualized needle guidance ultrasound supports more safety and helps to avoid complications during needle placement. Additionally, complex punctures are possible that were associated with higher risk using landmarks alone. Next to the blocking of specific nerve structures, interfascial and compartment blocks have also become established, whereby the visualization of individual nerves and plexus structures is not of relevance. The present review article describes published and clinically established puncture techniques with respect to the indications and procedures. The clinical value is reported according to the scientific evidence and the analgesic profile. Moreover, the authors explain potential risks, complications and dosing of local anesthetic agents.
Assuntos
Anestesia por Condução , Bloqueio Nervoso , Anestésicos Locais , Humanos , Manejo da Dor , Nervos Periféricos/diagnóstico por imagem , Ultrassonografia , Ultrassonografia de IntervençãoRESUMO
BACKGROUND: For the medical team, the management of pregnant trauma patients is a particular challenge. The aim of this study is to compile this data and to determine differences between pregnant and not pregnant trauma patients. MATERIALS AND METHODS: We carried out a retrospective data analysis from the TraumaRegister DGU® with a comparison of 102 pregnant and 3135 not pregnant women of child-bearing age (16-45 years) from 2016-2018 who were treated in a trauma center. All patients were delivered to the resuscitation room and received intensive care treatment. RESULTS: In Germany, Austria and Switzerland 3.2% of all trauma patients (102 women) were pregnant. Women with an average age of 29 years suffered most often trauma as a result of a road traffic accident. Major trauma (Injury Severity Score [ISS] ≥16 points) was seen in 24.5% of the pregnant women and 37.4% of the nonpregnant women. A computer tomography (whole body computer tomography) was carried out in 32.7% of all pregnant women but in 79.8% of the nonpregnant women. As a result of the trauma, 2.9% of the pregnant and 3.5% of the not pregnant women died. The standardised mortality rate (SMR) was 0.42 in pregnant women and 0.63 in nonpregnant women. CONCLUSION: For the first time there is data regarding incidence, trauma mechanism, prehospital and in-hospital care as well as intensive care of pregnant trauma patients in Germany, Austria and Switzerland. Further research regarding foetal outcome and trauma-related injuries in pregnant women is needed to develop an adjusted management for these patients ready to implement in trauma centres. Gynaecologists and obstetricians should be implemented in the trauma room team when needed.
Assuntos
Gestantes , Adulto , Áustria , Criança , Feminino , Alemanha/epidemiologia , Humanos , Escala de Gravidade do Ferimento , Gravidez , Sistema de Registros , Estudos Retrospectivos , SuíçaRESUMO
Viral infections can be fatal because of the direct cytopathic effects of the virus or the induction of a strong, uncontrolled inflammatory response. Virus and host intrinsic characteristics strongly modulate the outcome of viral infections. Recently we determined the circumstances under which enhanced replication of virus within the lymphoid tissue is beneficial for the outcome of a disease. This enforced viral replication promotes anti-viral immune activation and, counterintuitively, accelerates virus control. In this review we summarize the mechanisms that contribute to enforced viral replication. Antigen-presenting cells and CD169+ macrophages exhibit enforced viral replication after infection with the model viruses lymphocytic choriomeningitis virus (LCMV) and vesicular stomatitis virus (VSV). Ubiquitin-specific peptidase 18 (Usp18), an endogenous type I interferon blocker in CD169+ macrophages, has been identified as a proviral gene, as are B cell activating factor (BAFF) and carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1). Lymphotoxins (LT) strongly enhance viral replication in the spleen and lymph nodes. All these factors modulate splenic architecture and thereby promote the development of CD169+ macrophages. Tumor necrosis factor alpha (TNF-α) and nuclear factor kappa-light-chain-enhancer of activated B cell signaling (NF-κB) have been found to promote the survival of infected CD169+ macrophages, thereby similarly promoting enforced viral replication. Association of autoimmune disease with infections is evident from (1) autoimmune phenomena described during a chronic virus infection; (2) onset of autoimmune disease simultaneous to viral infections; and (3) experimental evidence. Involvement of virus infection during onset of type I diabetes is strongly evident. Epstein-Bar virus (EBV) infection was discussed to be involved in the pathogenesis of systemic lupus erythematosus. In conclusion, several mechanisms promote viral replication in secondary lymphatic organs. Identifying such factors in humans is a challenge for future studies.
Assuntos
Diabetes Mellitus Tipo 1/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Sistema Linfático/imunologia , Vírus da Coriomeningite Linfocítica/fisiologia , Vesiculovirus/fisiologia , Viroses/imunologia , Replicação Viral , Animais , Diabetes Mellitus Tipo 1/virologia , Herpesvirus Humano 4 , Interações Hospedeiro-Patógeno , Humanos , Lúpus Eritematoso Sistêmico/virologia , Sistema Linfático/virologia , Especificidade de Órgãos , Viroses/virologiaRESUMO
Langerhans cell histiocytosis (LCH) is a clonal histiocytic disorder with recurrent mutations of BRAF and MAP2K1, but data on the impact of genetic features on progression and long-term sequelae are sparse. Cases of pediatric LCH with long-term follow-up from our institution were analyzed for mutations in BRAFV600 and MAP2K1 exons 2 and 3 by immunostaining with mutation-specific VE1 antibody, as well as allele-specific PCR and sequencing, respectively. Clinical and follow-up data were obtained from our files and a questionnaire sent to all former patients. Sixteen of 37 (43%) evaluable cases showed BRAFV600E, one case a BRAFV600D and eleven (30%) a MAP2K1 mutation. Nine cases were unmutated for both genes. All cases with risk organ involvement showed either BRAFV600 or MAP2K1 mutation. Patients with BRAFV600 mutation excluding Hashimoto-Pritzker cases had a significantly higher risk for relapses (p = 0.02). Long-term sequelae were present in 19/46 (41%) patients (median follow-up 12.5 years, range 1.0 to 30.8) with a trend for higher rates in mutated cases (mutated = 9/17, 53% versus non-BRAFV600/MAP2K1 mutated = 2/7, 29%). In addition, 8/9 cases with skin involvement including all Hashimoto-Pritzker cases (n = 3) were positive for BRAFV600E. Infants below 2 years more frequently had BRAFV600 mutations (p = 0.013). Despite favorable prognosis, pediatric LCH shows a high frequency of relapses and long-term medical sequelae.
Assuntos
Histiocitose de Células de Langerhans/genética , MAP Quinase Quinase 1/genética , Mutação , Proteínas Proto-Oncogênicas B-raf/genética , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Histiocitose de Células de Langerhans/epidemiologia , Histiocitose de Células de Langerhans/patologia , Histiocitose de Células de Langerhans/terapia , Humanos , Lactente , Masculino , Estudos Retrospectivos , Fatores de Risco , Dermatopatias/epidemiologia , Dermatopatias/genética , Dermatopatias/patologia , Dermatopatias/terapiaRESUMO
Background: Concomitant chemotherapy (CT)-radiotherapy (RT) is a standard of care in locally advanced nasopharyngeal carcinoma (NPC) and a role for induction CT is not established. Methods: Patients with locally advanced NPC, WHO type 2 or 3, were randomized to induction TPF plus concomitant cisplatin-RT or concomitant cisplatin-RT alone. The TPF regimen consisted of three cycles of Docetaxel 75 mg/m2 day 1; cisplatin 75 mg/m2 day 1; 5FU 750 mg/m2/day days 1-5. RT consisted of 70 Gy in 7 weeks plus concomitant cisplatin 40 mg/m2 weekly. Results: A total of 83 patients were included in the study. Demographics and tumour characteristics were well balanced between both arms. Most of the patients (95%) in the TPF arm received three cycles of induction CT. The rate of grade 3-4 toxicity and the compliance (NCI-CTCAE v3) during cisplatin-RT were not different between both arms. With a median follow-up of 43.1 months, the 3-year PFS rate was 73.9% in the TPF arm versus 57.2% in the reference arm [hazard ratio (HR) = 0.44; 95% confidence interval (CI): 0.20-0.97, P = 0.042]. Similarly the 3 years overall survival rate was 86.3% in the TPF arm versus 68.9% in the reference arm (HR = 0.40; 95% CI: 0.15-1.04, P = 0.05). Conclusion: In conclusion, several important aspects can be emphasized: the compliance to induction TPF was good and TPF did not compromise the tolerance of the concomitant RT-cisplatin phase. The improved PFS and overall survival rates needs to be confirmed by further trials.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Quimioterapia de Indução/métodos , Carcinoma Nasofaríngeo/tratamento farmacológico , Neoplasias Nasofaríngeas/tratamento farmacológico , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Quimiorradioterapia/métodos , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Docetaxel/administração & dosagem , Docetaxel/efeitos adversos , Feminino , Fluoruracila/administração & dosagem , Fluoruracila/efeitos adversos , Humanos , Quimioterapia de Indução/efeitos adversos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Carcinoma Nasofaríngeo/mortalidade , Carcinoma Nasofaríngeo/radioterapia , Neoplasias Nasofaríngeas/mortalidade , Neoplasias Nasofaríngeas/radioterapiaRESUMO
To increase the power of X-ray crystallography to determine not only the structures but also the motions of biomolecules, we developed methods to address two classic crystallographic problems: putting electron density maps on the absolute scale of e(-)/Å(3) and calculating the noise at every point in the map. We find that noise varies with position and is often six to eight times lower than thresholds currently used in model building. Analyzing the rescaled electron density maps from 485 representative proteins revealed unmodeled conformations above the estimated noise for 45% of side chains and a previously hidden, low-occupancy inhibitor of HIV capsid protein. Comparing the electron density maps in the free and nucleotide-bound structures of three human protein kinases suggested that substrate binding perturbs distinct intrinsic allosteric networks that link the active site to surfaces that recognize regulatory proteins. These results illustrate general approaches to identify and analyze alternative conformations, low-occupancy small molecules, solvent distributions, communication pathways, and protein motions.
Assuntos
Cristalografia por Raios X/métodos , Elétrons , Proteínas Quinases/química , Proteínas/química , Sítio Alostérico , Anisotropia , Bacteriófago T4/química , Caseína Quinase II/química , Domínio Catalítico , Simulação por Computador , Quinase 2 Dependente de Ciclina/química , Proteínas Quinases Associadas com Morte Celular/química , Humanos , Processamento de Imagem Assistida por Computador/métodos , Interleucina-1beta/química , Movimento (Física) , Muramidase/química , Conformação Proteica , Receptores Proteína Tirosina Quinases/química , Receptor EphA3 , Reprodutibilidade dos Testes , Venenos de Escorpião/química , Produtos do Gene gag do Vírus da Imunodeficiência Humana/químicaRESUMO
We determined the indication, outcome, and risk factors of single and multiple hematopoietic stem cell transplantation(s) (HSCT) in children and adolescents mostly with advanced disease. Forty-one out of 483 patients (8.5 %; median age 9 years) diagnosed at the University of Leipzig with hematological and oncological diseases required HSCT from 1999 to 2011. Patients had overall survival (OS) of 63 ± 10 and 63 ± 16 %, event-free survival (EFS) of 57 ± 10 and 42 ± 16 %, relapse incidence (RI) of 39 ± 10 and 44 ± 18 % and nonrelapse mortality (NRM) of 4 ± 4 and 13 ± 9 % at 10 years after one or more allogeneic and autologous HSCT, respectively. One patient in CR1 and five with advanced disease received two HSCT. Four of the six patients maintained/achieved CR for a median of 13 months. Three died of progression and one of NRM. Two patients had a third HSCT and one survived in CR +231 days after HSCT. Risk factors for OS and EFS were disease stage at HSCT and EBMT risk score. Center (pediatric or JACIE accredited pediatric/adult) was not a determinant for survival. Pediatric single and multiple HSCT are important curative approaches for high-risk malignant diseases with low NRM. Efforts to reduce high RI remain the major aim.
Assuntos
Neoplasias Hematológicas/diagnóstico , Neoplasias Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas/métodos , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Neoplasias Hematológicas/mortalidade , Transplante de Células-Tronco Hematopoéticas/mortalidade , Humanos , Lactente , Masculino , Taxa de Sobrevida/tendências , Condicionamento Pré-Transplante/métodos , Condicionamento Pré-Transplante/mortalidade , Transplante Homólogo/métodos , Transplante Homólogo/mortalidade , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: The ageing process is intrinsically associated with decline in physical endurance, muscle strength and gait ability and balance, which all contribute to functional disability. Regular physical training, and more particularly multicomponent training (MCT), has demonstrated many health benefits. OBJECTIVE: To evaluate the evidence of the health benefits of MCT including endurance training, muscle strengthening, balance exercises, and/or stretching (i.e. flexibility training) and/or coordination training in adults aged 65 years or over. METHODS: A comprehensive, systematic database search for manuscripts was performed in CINAHL Plus, Embase, Medline, PubMed Central, ScienceDirect, Scopus, Sport Discus and Web of Science using key words. For potential inclusion, two reviewers independently assessed all intervention studies published in English language from 1 January 2000 to 30 April 2015. RESULTS: Of 2525 articles initially identified, 27 studies were finally included in this systematic review. They were all divided into five categories according to their main outcome measurements (cardio-respiratory fitness, metabolic outcomes, functional and cognitive functions and quality of life, QoL). These studies reported that MCT has a significant beneficial effect on cardio-respiratory fitness and on metabolic outcomes. Substantial improvement in functional and cognitive performance was also measured and a slighter but positive effect on QoL. CONCLUSION: Overall, this review demonstrates a positive effect of MCT with functional benefits and positive health outcomes for seniors. Based on this evidence, clinicians should encourage all adults aged 65 or over to engage in MCT programmes to favour healthy ageing and keeping older members of our society autonomous and independent.
Assuntos
Educação Física e Treinamento , Idoso , Envelhecimento , Humanos , Educação Física e Treinamento/métodos , Aptidão Física , Resultado do TratamentoRESUMO
BACKGROUND: Medication care is a complicated process in nursing homes. The aim of the study was to offer an overview of inappropriate medication prescription and administration practices in nursing homes in Alsace in order to propose improvement actions to remedy the weaknesses identified. METHODS: This study was conducted prospectively in 10 nursing homes under contract with community pharmacies in Alsace. The practices of prescription were examined to determine the prevalence of potentially inappropriate medications, inappropriate and contraindicated medication associations. Crushing and opening practices were also assessed, daily treatment costs were calculated. RESULTS: Two hundred and eighty-four residents were included (age: 87.1 ± 5.6 years). The average number of drugs per resident was 8.1 ± 4.0 (daily treatment cost: 4.19 ± 5.21 ). On average, 1.5 drugs ± 1.4 per prescription were considered as potentially inappropriate (daily treatment cost: 0.49 ± 0.76 ). The contraindication associations concerned 8 % of prescriptions and involved potentially inappropriate drugs in 60 % of cases. Inappropriate associations mainly concerned nervous system drugs. Thirty-three residents were taking more than 2 psychotropic drugs; 23 had more than one benzodiazepine. Regarding drug administration, practices differed from one nursing home to another. Crushing was performed in 8 nursing homes. It concerned 20 residents (7 %) and 69 drugs. In 50 %, the crushing decision was made by nurses without physician or pharmacist supervision. Fifty-seven percent of crushed drugs had a formulation which did not allow crushing (n=39 drugs). The analysis of those items led to the proposal of improvement actions. CONCLUSION: This study pointed out inappropriate medication practices. Tracking tools for inappropriate clinical practices could be operated by physicians, pharmacists and nursing teams through coordinated multidisciplinary approaches.
Assuntos
Uso de Medicamentos/estatística & dados numéricos , Prescrição Inadequada/estatística & dados numéricos , Erros de Medicação/estatística & dados numéricos , Casas de Saúde/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Formas de Dosagem , Custos de Medicamentos , Prescrições de Medicamentos/economia , Prescrições de Medicamentos/estatística & dados numéricos , Uso de Medicamentos/economia , Feminino , França/epidemiologia , Humanos , Prescrição Inadequada/economia , Masculino , Erros de Medicação/economia , Casas de Saúde/economia , PrevalênciaRESUMO
Malignancies of the uterus metastasize by direct invasion of neighboring structures, lymphatically or hematogenously. Endometrial and cervical cancers lymphatically spread to the pelvic and para-aortic lymph nodes. For endometrial cancer the depth of myometrial invasion, lymphosvascular space involvement (LVSI) and a microcystic, elongated and fragmented (MELF) glandular invasion pattern are predictors for lymph node metastases. Metastases to the pelvic lymph nodes occur in approximately 10 % of endometrial cancer patients and in 30 % of these cases the para-aortic lymph nodes are also involved. Sentinel lymph node biopsy is possible for clinical stage I endometrial cancer and early stages of cervical cancer but is not yet routine. The presence of LVSI is considered to be the strongest predictor of distant metastases, particularly if assessed by immunohistochemistry with antibodies against factor VIII-related antigen or CD31. Endometrioid and clear cell carcinomas can hematogenously metastasize to the lungs, bones, liver and brain and can rarely be manifested as a solitary metastasis. In contrast, serous carcinomas can show extensive peritoneal spread. To date molecular biomarkers cannot predict the occurrence of distant metastasis. Overexpression of P53, p16 and L1CAM have been identified as negative prognostic factors and are associated with the prognostically unfavorable serous tumor type. The metastatic spread of squamous cell cervical cancer is strongly associated with tumor volume. Microinvasive carcinomas have a very low rate of parametrial and lymph node involvement and do not require radical hysterectomy. In contrast, lymph node metastases occur in up to 50 % of bulky stages IB and II cervical cancers. Distant metastases can occur in the lungs, liver, bones and brain. Molecular biomarkers have not been shown to predict metastatic spread. In well-differentiated adenocarcinoma of the cervix the pattern of invasion is strongly predictive for the presence of lymph node metastases, irrespective of tumor size and depth of invasion.
Assuntos
Neoplasias do Endométrio/patologia , Neoplasias do Endométrio/terapia , Metástase Linfática/patologia , Células Neoplásicas Circulantes , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/terapia , Neoplasias Uterinas/patologia , Neoplasias Uterinas/terapia , Biomarcadores Tumorais/análise , Diagnóstico Diferencial , Feminino , Humanos , Linfonodos/patologia , Invasividade Neoplásica , Estadiamento de Neoplasias , Prognóstico , Biópsia de Linfonodo SentinelaRESUMO
Although renal transplantation using expanded criteria donors has become a common practice, immune responses related to immunosenescence in those kidney allografts have not been studied yet in humans. We performed a retrospective molecular analysis of the T cell immune response in 43 kidney biopsies from patients with acute T cell-mediated rejection including 25 from recipients engrafted with a kidney from expanded criteria donor and 18 from recipients grafted with optimal kidney allograft. The clinical, transplant and acute T cell-mediated rejection characteristics of both groups were similar at baseline. The expression of RORγt, Il-17 and T-bet mRNA was significantly higher in the elderly than in the optimal group (p = 0.02, p = 0.036, and p = 0.01, respectively). Foxp3 mRNA levels were significantly higher in elderly patients experiencing successful acute T cell-mediated rejection reversal (p = 0.03). The presence of IL-17 mRNA was strongly associated with nonsuccessful reversal in elderly patients (p = 0.008). Patients with mRNA IL17 expression detection and low mRNA Foxp3 expression experienced significantly more treatment failure (87.5%) than patients with no mRNA IL17 expression and/or high mRNA Foxp3 expression (26.7%; p = 0.017). Our study suggests that the Th17 pathway is involved in pathogenesis and prognosis of acute T cell-mediated rejection in recipients of expanded criteria allograft.
Assuntos
Aloenxertos/imunologia , Seleção do Doador , Rejeição de Enxerto/imunologia , Transplante de Rim , Células Th17/imunologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Aloenxertos/metabolismo , Aloenxertos/patologia , Biomarcadores/metabolismo , Biópsia , Feminino , Fatores de Transcrição Forkhead/metabolismo , Rejeição de Enxerto/metabolismo , Rejeição de Enxerto/patologia , Humanos , Interleucina-17/metabolismo , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase em Tempo Real , Estudos Retrospectivos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Células Th17/metabolismo , Transplante HomólogoRESUMO
We previously reported a randomized controlled trial in which 227 de novo deceased-donor kidney transplant recipients were randomized to rabbit antithymocyte (rATG, Thymoglobulin) or daclizumab if they were considered to be at high immunological risk, defined as high panel reactive antibodies (PRA), loss of a first kidney graft through rejection within 2 years of transplantation, or third or fourth transplantation. Patients treated with rATG had lower incidences of biopsy-proven acute rejection (BPAR) and steroid-resistant rejection at 1 year. Patients were followed to 5 years posttransplant in an observational study; findings are described here. Treatment with rATG was associated with a lower rate of BPAR at 5 years (14.2% vs. 26.0% with daclizumab; p = 0.035). Only one rATG-treated patient (0.9%) and one daclizumab-treated patient (1.0%) developed BPAR after 1 year. Five-year graft and patient survival rates, and renal function, were similar between the two groups. Overall graft survival at 5 years was significantly higher in patients without BPAR (81.0% vs. 54.8%; p < 0.001). In conclusion, rATG is superior to daclizumab for the prevention of BPAR among high-immunological-risk renal transplant recipients. Overall graft survival at 5 years was approximately 70% with either induction therapy, which compares favorably to low-risk cohorts.