Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 39
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
BMC Med ; 21(1): 11, 2023 01 08.
Artigo em Inglês | MEDLINE | ID: mdl-36617560

RESUMO

BACKGROUND: Rezivertinib (BPI-7711) is a novel third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI). This phase IIa study was part of a phase I/IIa study (NCT03386955), aimed to evaluate the efficacy and safety of rezivertinib as the first-line treatment for patients with locally advanced or metastatic/recurrent EGFR mutated non-small cell lung cancer (NSCLC). METHODS: Patients received the first-line treatment of 180 mg rezivertinib orally once daily until disease progression, unacceptable toxicity, or withdrawal of consent. The primary endpoint was the objective response rate (ORR) assessed by blinded independent central review (BICR). Secondary endpoints included disease control rate (DCR), duration of response (DoR), progression-free survival (PFS), overall survival (OS), and safety. RESULTS: From Jun 12, 2019, to Oct 17, 2019, 43 patients were enrolled. At the data cutoff date on Dec 23, 2021, the ORR by BICR was 83.7% (95% CI: 69.3-93.2%). The median DoR was 19.3 (95% CI: 15.8-25.0) months. The median PFS by BICR was 20.7 (95% CI: 13.8-24.8) months and 22.0 (95% CI: 16.8-26.3) months by investigators. Data on OS was immature. Totally, 40 (93.0%) patients had at least one treatment-related adverse event while 4 (9.3%) of them were grade ≥ 3. CONCLUSIONS: Rezivertinib (BPI-7711) showed promising efficacy and a favorable safety profile for the treatment among the locally advanced or metastatic/recurrent NSCLC patients with EGFR mutation in the first-line setting. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03386955.


Assuntos
Antineoplásicos , Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Antineoplásicos/efeitos adversos , Inibidores de Proteínas Quinases/efeitos adversos , Receptores ErbB/genética , Receptores ErbB/uso terapêutico , Mutação
2.
Med J Aust ; 216 Suppl 10: S5-S8, 2022 06 06.
Artigo em Inglês | MEDLINE | ID: mdl-35665937

RESUMO

Patient activation is a behavioural concept and is at the heart of personalised care. It is defined as an individual's knowledge, skill and confidence for managing their health and health care. Evidence indicates that patient activation scores can predict health behaviour and are closely linked to various clinical outcomes: reduced unnecessary emergency department visits, hospital admissions and re-admissions. Patients with lower activation levels (25-40% of the population) are less likely to adopt healthy behaviour, and more likely to have poorer clinical outcomes and higher rates of hospitalisation. Effective interventions can improve a patient's activation level, and positive change in activation equates to positive change in self-care behaviour. But to improve patient activation, we must first measure it using a robust evidence-based tool such as the Patient Activation Measure (PAM) survey. Armed with the patient's PAM score, providers can tailor their care and help patients achieve better self-care, which can improve outcomes of care and reduce unnecessary health care utilisation. The PAM is also useful for population segmentation and risk stratification - to target interventions and health strategies to meet the needs of patients who are at different points along the activation continuum, to measure the performance of health care systems, and to evaluate the effectiveness of health care interventions. The role of patient activation requires further serious consideration if we are to improve the long-term health and wellbeing of all Australians. The PAM tool is a feasible and cost-effective solution for achieving the Quadruple Aim - improving population health, the cost-efficiency of the health system, and patient and provider experience.


Assuntos
Participação do Paciente , Autocuidado , Austrália , Humanos , Aceitação pelo Paciente de Cuidados de Saúde , Inquéritos e Questionários
3.
BMC Med Educ ; 22(1): 516, 2022 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-35778704

RESUMO

BACKGROUND: Representation of specialist international medical graduates (SIMGs) in specific specialties such as surgery can be expected to grow as doctor shortages are predicted in the context of additional care provision for aging populations and limited local supply. Many national medical boards and colleges provide pathways for medical registration and fellowship of SIMGs that may include examinations and short-term training. There is currently very little understanding of how SIMGs are perceived by colleagues and whether their performance is perceived to be comparable to locally trained medical specialists. It is also not known how SIMGs perceive their own capabilities in comparison to local specialists. The aim of this study is to explore the relationships between colleague feedback and self-evaluation in the specialist area of surgery to identify possible methods for enhancing registration and follow-up training within the jurisdiction of Australia and New Zealand. METHODS: Feedback from 1728 colleagues to 96 SIMG surgeons and 406 colleagues to 25 locally trained Fellow surgeons was collected, resulting in 2134 responses to 121 surgeons in total. Additionally, 98 SIMGs and 25 Fellows provided self-evaluation scores (123 in total). Questionnaire and data reliability were calculated before analysis of variance, principal component analysis and network analysis were performed to identify differences between colleague evaluations and self-evaluations by surgeon type. RESULTS: Colleagues rated SIMGs and Fellows in the 'very good' to 'excellent' range. Fellows received a small but statistically significant higher average score than SIMGs, especially in areas dealing with medical skills and expertise. However, SIMGs received higher scores where there was motivation to demonstrate working well with colleagues. Colleagues rated SIMGs using one dimension and Fellows using three, which can be identified as clinical management skills, inter-personal communication skills and self-management skills. On self-evaluation, both SIMGs and Fellows gave themselves a significant lower average score than their colleagues, with SIMGs giving themselves a statistically significant higher score than Fellows. CONCLUSIONS: Colleagues rate SIMGs and Fellows highly. The results of this study indicate that SIMGs tend to self-assess more highly, but according to colleagues do not display the same level of differentiation between clinical management, inter-personal and self-management skills. Further research is required to confirm these provisional findings and possible reasons for lack of differentiation if this exists. Depending on the outcome, possible support mechanisms can be explored that may lead to increased comparable performance with locally trained graduates of Australia and New Zealand in these three dimensions.


Assuntos
Medicina , Cirurgiões , Austrália , Humanos , Nova Zelândia , Reprodutibilidade dos Testes
4.
BMC Med Educ ; 22(1): 494, 2022 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-35751119

RESUMO

BACKGROUND: Multisource feedback is an evidence-based and validated tool used to provide clinicians, including those in training, feedback on their professional and interpersonal skills. Multisource feedback is mandatory for participants in the Royal Australian College of General Practitioners Practice Experience Program and for some Australian General Practice Training Registrars. Given the recency of the Practice Experience Program, there are currently no benchmarks available for comparison within the program and to other comparable cohorts including doctors in the Australian General Practice Training program. The aim of this study is to evaluate and compare colleague feedback within and across General Practice trainee cohorts. METHODS: Colleague feedback, from multisource feedback of Practice Experience Program participants and Australian General Practice Training Registrars, collected between January 2018 and April 2020, was compared to identify similarities and differences. Analyses entailed descriptive statistics, between and within groups rater consistency and agreement measures, principal component analysis, t-tests, analysis of variance, and psychometric network analysis. RESULTS: Colleague ratings of Practice Experience Program participants (overall average 88.58%) were lower than for Registrars (89.08%), although this difference was not significant. 'Communication with patients' was rated significantly lower for Practice Experience Program participants (2.13%) while this group was rated significantly better for their 'Ability to say no' (1.78%). Psychometric network analyses showed stronger linkages between items making up the behavioural component (compared to the items of the performance and self-management components, as found by principal component analysis) for Practice Experience Program participants as compared to Registrars. Practice Experience Program participants were stronger in clinical knowledge and skills as well as confidentiality, while Registrars were stronger in communicating with patients, managing their own stress, and in their management and leadership skills. CONCLUSIONS: The multisource feedback scores of doctors undertaking the Practice Experience Program suggests that, while all mean values are 'very good' to 'excellent', there are areas for improvement. The linkages between skills suggests that Practice Experience Program doctors' skills are somewhat isolated and have yet to fully synthesise. We now have a better understanding of how different groups of General Practitioners in training compare with respect to professional and interpersonal skills. Based on the demonstrated differences, the Practice Experience Program might benefit from the addition of educational activities to target the less developed skills.


Assuntos
Medicina Geral , Clínicos Gerais , Austrália , Retroalimentação , Humanos , Inquéritos e Questionários
5.
BMC Med Educ ; 22(1): 669, 2022 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-36085053

RESUMO

BACKGROUND: Medical boards and healthcare providers internationally are coming under increasing pressure to attract international medical graduates (IMGs) and overseas trained doctors (OTDs) to cope with predicted general practice (GP) doctor shortages. Various pathways to registration are made available for this purpose. There is very little understanding of the effects of different training pathways to licensing and registration on the ability of IMGs and OTDs, as well as locally trained doctors, to acquire the desirable professional skills deemed necessary for working effectively in the primary care sector. METHODS: Feedback from patients was collected at the end of their scheduled consultation with their doctor using a questionnaire consisting of 13 Likert scale items that asked them to rate their experience of the consultation. Feedback was obtained for doctors going through the Royal Australian College of General Practice (RACGP) Practice Experience Program (PEP) and the Australian General Practice Training Program (AGPT), with the former intended primarily for IMGs and OTDs, and the latter for local medical graduates including from New Zealand. Patient feedback was also obtained for patients visiting already Fellowed and experienced GPs for comparative purposes, resulting in data for three groups of doctors (two trainee, one already Fellowed). Rater consistency and agreement measures, analysis of variance, principal component analysis, t-tests and psychometric network analysis were undertaken between and within groups to identify similarities and differences in patient experience and professionalism of doctors. RESULTS: There was a small but significant difference in average patient raw scores given to PEP and AGPT doctors (90.25, 90.97%), with the highest scores for 'Respect shown' (92.24, 93.15%) and the lowest for 'Reassurance' 89.38, 89.84%). Male patients gave lower scores (89.56%) than female patients (91.23%) for both groups of doctors. In comparison, patients gave experienced GPs an average 91.38% score, with male patients giving a lower average score than female patients (90.62, 91.93%). Two components were found in the patient data (interpersonal communication, caring/empathy) that account for over 80% of the variance. When patient scores were aggregated by doctor, the average PEP and AGPT doctor scores received were 90.27 and 90.99%, in comparison to the average experienced GP score of 91.43%. Network analysis revealed differences in the connectedness of items between these two groups as well as in comparison with experienced GPs, suggesting that PEP doctors' skills are less cohesively developed in the areas of listening ability, explaining and providing reassurance. CONCLUSIONS: The small but statistically significant differences between doctor groups reported in this preliminary study are supplemented by percentile analysis, network analysis and principal component analysis to identify areas for further exploration and study. There is scope for improving the integration of interpersonal communication skills of GPs in Training with their caring and empathy skills, when compared with experienced GPs as a benchmark. Suggestions are made for enhancing professional skills from a patients' perspective in future training programs.


Assuntos
Medicina Geral , Clínicos Gerais , Austrália , Escolaridade , Medicina de Família e Comunidade , Feminino , Humanos , Masculino
6.
Opt Lett ; 46(22): 5655-5658, 2021 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-34780429

RESUMO

We report on a 1 kHz, 515 nm laser system, based on a commercially available 230 W average power Yb:YAG thin-disk regenerative amplifier, developed for pumping one of the last optical parametric chirped pulse amplification (OPCPA) stages of the Allegra laser system at ELI Beamlines. To avoid problems with self-focusing of picosecond pulses, the 1030 nm output pulses are compressed and frequency doubled with an LBO crystal in vacuum. Additionally, development of a thermal management system was needed to ensure stable phase matching conditions at high average power. The resulting 515 nm pulses have an energy of more than 120 mJ with SHG efficiency of 60% and an average RMS stability of 1.1% for more than 8 h.

7.
BMC Med Educ ; 19(1): 73, 2019 03 04.
Artigo em Inglês | MEDLINE | ID: mdl-30890136

RESUMO

Following publication of the original article [1], the author reported that Fig. 4 was missing. This has now been corrected in the original article.

8.
BMC Med Educ ; 18(1): 323, 2018 Dec 29.
Artigo em Inglês | MEDLINE | ID: mdl-30594157

RESUMO

BACKGROUND: The recent introduction of the Professional Performance Framework by the Medical Board of Australia is intended to strengthen continuing professional development for the 100,000 or so medical practitioners in Australia. An important option within the Framework is the use of multisource feedback from patients, colleagues and self-evaluations to allow doctors to reflect on their performance and identify methods for self-improvement. The aim of this study is to explore the relationships between patient feedback, colleague feedback, and self-evaluation using the same questionnaires as used by patients and colleagues. METHODS: Feedback data for around 2000 doctors belonging to four different groups were collected through non-probability sampling from nearly 100,000 patients and 24,000 colleagues. Reliability analysis was performed using single measures intraclass coefficients, Cronbach' alpha and signal-to-noise ratios. Analysis of variance was used to identify significant differences in scores between items and sub-populations of doctors; principal component analysis involving Kaiser-Meyer-Olkin (KMO) sampling adequacy and Bartlett's test for sphericity was used to reveal components of doctor performance; and correlation analysis was used for identifying convergence between sets of scores from different sources. RESULTS: Patients rated doctors highest on respect shown and lowest on reassurance provided. Colleagues rated doctors highest on trustworthiness and lowest on ability to say 'no'. With regard to self-evaluation, doctors gave themselves lower scores on the patient questionnaire and the colleague questionnaire (10 and 12%, respectively) than they received from their patients and colleagues. There were weak but positive correlations between self-scores and scores received indicating some convergence of agreement, with doctors feeling more comfortable with self-evaluation from the perspective of patients than from colleagues. CONCLUSIONS: Supplementing patient and colleague feedback with self-evaluation may help doctors confirm for themselves areas for enhanced CPD through convergence. If self-evaluation is used, the colleague questionnaire may be sufficient, since aspects of clinical competence, management, communication and leadership as well as patient care can be addressed through colleague items. Mentoring of doctors in CPD should aim to make doctors feel more comfortable about being rated by colleagues to enhance convergence between self-scores and evaluations from the perspective of colleagues.


Assuntos
Retroalimentação , Satisfação do Paciente , Revisão dos Cuidados de Saúde por Pares , Médicos , Competência Profissional , Inquéritos e Questionários/normas , Austrália , Educação Médica Continuada , Humanos , Relações Médico-Paciente , Indicadores de Qualidade em Assistência à Saúde , Reprodutibilidade dos Testes , Autoavaliação (Psicologia) , Conselhos de Especialidade Profissional
9.
Appl Opt ; 54(2): 219-27, 2015 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-25967620

RESUMO

The conversion efficiency of cross-polarized wave (XPW) generation can be improved using two separate thinner nonlinear crystals versus a single thick one, due to the evolution of the beam sizes and individual phases after the first crystal. In this paper, we present an alternative scheme in which a curved mirror is used to reimage a plane just after the BaF2 crystal for a second pass. We also develop a simple analytic model for XPW conversion that describes the origin of a nonlinear phase mismatch and nonlinear lensing for both the fundamental wave and XPW. Coupled with the numerical solution for the process and the Fresnel propagation after the first pass, we also explore the factors that affect the efficiency of saturated, seeded XPW conversion. These include the development of the on-axis relative phase difference in the first crystal and after it (during free-space propagation), mode matching, wavefront curvature difference, and crystal tuning angle. We also experimentally demonstrate that the beam quality of the XPW signal after the second pass can be improved by the reimaging.

10.
Appl Opt ; 54(33): 9818-22, 2015 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-26836543

RESUMO

Proper alignment is critical to obtain the desired performance from focused spatially chirped beams, for example in simultaneous spatial and temporal focusing (SSTF). We present a simple technique for inspecting the beam paths and focusing conditions for the spectral components of a broadband beam. We spectrally resolve the light transmitted past a knife edge as it was scanned across the beam at several axial positions. The measurement yields information about spot size, M2, and the propagation paths of different frequency components. We also present calculations to illustrate the effects of defocus aberration on SSTF beams.


Assuntos
Lasers , Luz , Dispositivos Ópticos , Fenômenos Ópticos , Análise Espectral
11.
Opt Express ; 20(13): 14244-59, 2012 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-22714487

RESUMO

We analyze the structure of space-time focusing of spatially-chirped pulses using a technique where each frequency component of the beam follows its own Gaussian beamlet that in turn travels as a ray through the system. The approach leads to analytic expressions for the axially-varying pulse duration, pulse-front tilt, and the longitudinal intensity profile. We find that an important contribution to the intensity localization obtained with spatial-chirp focusing arises from the evolution of the geometric phase of the beamlets.


Assuntos
Luz , Modelos Teóricos , Refratometria/métodos , Espalhamento de Radiação , Simulação por Computador
12.
J Thorac Oncol ; 17(5): 708-717, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35181498

RESUMO

INTRODUCTION: Rezivertinib (BPI-7711) is a novel third-generation EGFR tyrosine kinase inhibitor selective for EGFR-sensitizing and T790M mutations. This study was designed to evaluate the safety, efficacy, and pharmacokinetics of rezivertinib for patients having advanced NSCLC with EGFR T790M mutation. METHODS: This phase 1 study (NCT03386955) was conducted across 20 sites in the People's Republic of China. Patients received rezivertinib at six oral dose levels (30 mg, 60 mg, 120 mg, 180 mg, 240 mg, 300 mg) once daily until disease progression, unacceptable toxicity, or patient withdrawal. The primary end points were safety for the dose-escalation phase and objective response rate by the blinded independent central review for the total study population. RESULTS: A total of 19 patients in dose-escalation phase using the standard 3 + 3 design principle and 153 patients in dose-expansion phase were enrolled from September 11, 2017, to August 23, 2019. The data cutoff date was on June 15, 2020. No dose-limiting toxicity occurred in the dose-escalation phase. The treatment-related adverse events were observed in 82.0% (141 of 172) of patients, and 17.4% (30 of 172) had grade greater than or equal to 3, among which decreased neutrophil count (2.9%), leukopenia (2.9%), and pneumonia (2.9%) were the most common. The overall blinded independent central review-evaluated objective response rate was 59.3% (102 of 172, 95% confidence interval: 51.6-66.7), and the median progression-free survival was 9.7 (95% confidence interval: 8.3-11.1) months. CONCLUSIONS: Rezivertinib was found to have promising efficacy with a manageable safety profile in patients with EGFR T790M-mutated advanced NSCLC. Further study is warranted.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Compostos de Anilina , Carcinoma Pulmonar de Células não Pequenas/induzido quimicamente , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Receptores ErbB/genética , Humanos , Neoplasias Pulmonares/induzido quimicamente , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Mutação , Inibidores de Proteínas Quinases/efeitos adversos
13.
J Thorac Oncol ; 17(11): 1306-1317, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36049654

RESUMO

INTRODUCTION: Rezivertinib (BPI-7711) is a novel third-generation EGFR tyrosine kinase inhibitor (TKI) targeting both EGFR-sensitizing mutations and EGFR T790M mutation. This study aimed to evaluate the efficacy and safety of rezivertinib in patients with locally advanced or metastatic/recurrent EGFR T790M-mutated NSCLC. METHODS: Patients with locally advanced or metastatic/recurrent NSCLC with confirmed EGFR T790M mutation who progressed after first-/second-generation EGFR TKI therapy or primary EGFR T790M mutation were enrolled. Patients received rezivertinib at 180 mg orally once daily until disease progression, unacceptable toxicity, or withdrawal of consent. The primary end point was objective response rate (ORR) assessed by blinded independent central review per Response Evaluation Criteria in Solid Tumors version 1.1. Secondary end points included disease control rate (DCR), duration of response, progression-free survival (PFS), overall survival, and safety. This study is registered with Clinical Trials.gov (NCT03812809). RESULTS: A total of 226 patients were enrolled from July 5, 2019, to January 22, 2020. By the data cutoff date on January 24, 2022, the median duration of follow-up was 23.3 months (95% confidence interval [CI]: 22.8-24.0). The ORR by blinded independent central review was 64.6% (95% CI: 58.0%-70.8%), and DCR was 89.8% (95% CI: 85.1%-93.4%). The median duration of response was 12.5 months (95% CI: 10.0-13.9), and median PFS was 12.2 months (95% CI: 9.6-13.9). The median overall survival was 23.9 months (95% CI: 20.0-not calculated [NC]). Among 91 (40.3%) patients with central nervous system (CNS) metastases, the median CNS PFS was 16.6 months (95% CI: 11.1-NC). In 29 patients with more than or equal to one brain target lesion at baseline, the CNS ORR and CNS DCR were 69.0% (95% CI: 49.2%-84.7%) and 100% (95% CI: 88.1%-100%), respectively. Time to progression of CNS was 16.5 months (95% CI: 9.7-NC). Of 226 patients, 188 (83.2%) had at least one treatment-related adverse event, whereas grade more than or equal to 3 occurred in 45 (19.9%) patients. No interstitial lung disease was reported. CONCLUSIONS: Rezivertinib was found to have promising efficacy and favorable safety profile for patients with locally advanced or metastatic/recurrent NSCLC with EGFR T790M mutation.


Assuntos
Antineoplásicos , Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Receptores ErbB , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patologia , Mutação , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/genética , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/uso terapêutico
14.
Am J Respir Crit Care Med ; 181(3): 247-53, 2010 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-19875688

RESUMO

RATIONALE: Mast cells and neutrophils are key contributors to the pathophysiological inflammatory processes that underpin asthma and chronic obstructive pulmonary disease, partly through the release of noxious serine proteases, including cathepsin G (Cat G) and chymase. From this standpoint, a dual inhibitor of neutrophil Cat G and mast cell chymase could protect against these disease-related inflammatory responses. OBJECTIVES: We examined the antiinflammatory pharmacology of RWJ-355871, a dual inhibitor of Cat G and chymase, in animal models of inflammation that evince pathophysiological pathways relevant to asthma and chronic obstructive pulmonary disease to determine the therapeutic potential of this compound. METHODS: In an ovalbumin (OVA)-sensitized rat model, RWJ-355871 was administered to block the mast-cell-mediated increase in paw volume caused by OVA injection. In a sheep asthma model, antigen-induced airway responses were assessed with and without aerosol treatment with RWJ-355871. In a murine tobacco-smoke model of airway inflammation, the effect of RWJ-355871 on smoke-induced neutrophilia was determined. MEASUREMENTS AND MAIN RESULTS: Intravenous treatment of OVA-sensitized rats with RWJ-355871 provided dose-dependent reduction in the increase in rat paw volume. In allergic sheep, aerosol pretreatment with RWJ-355871 showed dose-dependent inhibition of the antigen-induced early response, late response, and post-antigen-induced airway hyperreponsiveness. In tobacco-smoke-exposed mice, nebulized RWJ-355871 significantly reduced the smoke-induced neutrophilia from the levels observed in untreated mice. CONCLUSIONS: The preclinical antiinflammatory effects of RWJ-355871 in these animal models of inflammation indicate that this dual inhibitor may have therapeutic utility for treating airway inflammatory diseases involving mechanisms that depend on Cat G and/or chymase.


Assuntos
Catepsina G/antagonistas & inibidores , Quimases/antagonistas & inibidores , Pneumopatias/enzimologia , Organofosfonatos/uso terapêutico , Piperidinas/uso terapêutico , Doença Pulmonar Obstrutiva Crônica/enzimologia , Animais , Biomarcadores/metabolismo , Líquido da Lavagem Broncoalveolar/química , Catepsina G/metabolismo , Quimases/metabolismo , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Ensaio de Imunoadsorção Enzimática , Feminino , Injeções Intravenosas , Pneumopatias/tratamento farmacológico , Camundongos , Organofosfonatos/administração & dosagem , Piperidinas/administração & dosagem , Doença Pulmonar Obstrutiva Crônica/tratamento farmacológico , Ratos , Ovinos , Resultado do Tratamento
15.
J Thorac Oncol ; 16(5): 740-763, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33338652

RESUMO

Single-agent osimertinib is the standard of care for the first-line treatment of advancedEGFR+ NSCLC and remained the only marketed third-generation EGFR tyrosine kinase inhibitor (TKI) until March 2020 when almonertinib (HS-10296) was approved in the People's Republic of China for the treatment of advanced EGFR T790M+ NSCLC based on a phase 2 expansion study of a phase 1/2 trial. In this review, we profiled many of the third-generation EGFR TKIs in late-stage clinical development (e.g., almonertinib, lazertinib, alflutinib1, rezivertinib, ASK120069, SH-1028, D-0316, and abivertinib) based on their interim results from phase 1 and phase 2 trials, and included the designs of the phase 3 trials and their chemical structures when publicly available. We also listed other third-generation EGFR TKIs in pipeline development based on the search of clinical trial registration websites. In addition, we summarized the results of clinical trials that previously reported third-generation EGFR TKIs (rociletinib, olmutinib, nazartinib, mavelertinib), including phase 3 results of rociletinib and naquotinib. We further profiled combination clinical trial design of the third-generation EGFR TKIs including FLAURA2 (NCT04035486), MARIPOSA (NCT04487080), ACROSS1 (NCT04500704), and ACROSS2 (NCT04500717) that if positive can potentially usher in the next standard of care for advanced EGFR+ NSCLC.


Assuntos
Neoplasias Pulmonares , Inibidores de Proteínas Quinases , Acrilamidas , Compostos de Anilina , China , Ensaios Clínicos Fase I como Assunto , Ensaios Clínicos Fase II como Assunto , Receptores ErbB/genética , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Morfolinas , Mutação , Inibidores de Proteínas Quinases/uso terapêutico , Pirazóis , Pirimidinas
16.
Med Educ ; 44(4): 367-78, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20444072

RESUMO

OBJECTIVES: There is growing interest in multi-source, multi-level feedback for measuring the performance of health care professionals. However, data are often unbalanced (e.g. there are different numbers of raters for each doctor), uncrossed (e.g. raters rate the doctor on only one occasion) and fully nested (e.g. raters for a doctor are unique to that doctor). Estimating the true score variance among doctors under these circumstances is proving a challenge. METHODS: Extensions to reliability and generalisability (G) formulae are introduced to handle unbalanced, uncrossed and fully nested data to produce coefficients that take into account variances among raters, ratees and questionnaire items at different levels of analysis. Decision (D) formulae are developed to handle predictions of minimum numbers of raters for unbalanced studies. An artificial dataset and two real-world datasets consisting of colleague and patient evaluations of doctors are analysed to demonstrate the feasibility and relevance of the formulae. Another independent dataset is used for validating D predictions of G coefficients for varying numbers of raters against actual G coefficients. A combined G coefficient formula is introduced for estimating multi-sourced reliability. RESULTS: The results from the formulae indicate that it is possible to estimate reliability and generalisability in unbalanced, fully nested and uncrossed studies, and to identify extraneous variance that can be removed to estimate true score variance among doctors. The validation results show that it is possible to predict the minimum numbers of raters even if the study is unbalanced. DISCUSSION: Calculating G and D coefficients for psychometric data based on feedback on doctor performance is possible even when the data are unbalanced, uncrossed and fully nested, provided that: (i) variances are separated at the rater and ratee levels, and (ii) the average number of raters per ratee is used in calculations for deriving these coefficients.


Assuntos
Competência Clínica/normas , Modelos Estatísticos , Revisão dos Cuidados de Saúde por Pares/métodos , Psicometria/métodos , Pessoal de Saúde/psicologia , Humanos , Revisão dos Cuidados de Saúde por Pares/normas , Psicometria/normas , Reprodutibilidade dos Testes , Reino Unido
19.
ACS Med Chem Lett ; 11(12): 2504-2509, 2020 Dec 10.
Artigo em Inglês | MEDLINE | ID: mdl-33335674

RESUMO

The 6-benzhydryl-4-amino-quinolin-2-ones are peripherally restricted CB1 receptor inverse agonists (CB1RIAs) that have been reported to attenuate obesity and improve insulin sensitivity in the diet-induced obese (DIO) mouse model. However, chronic dosing of select compounds from the series showed time-dependent brain accumulation despite a low brain/plasma exposure ratio. To address this issue, a PEGylation approach was employed to identify a novel series of homodimeric 6-benzhydryl-4-amino-quinazoline-PEG conjugates with an extended half-life. The lead compound 18 engaged peripheral CB1Rs in a gastrointestinal (GI) tract motility study and demonstrated a high level of peripheral restriction in a chronic DIO mouse pharmacokinetic study.

20.
Med Educ ; 43(8): 757-66, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19659489

RESUMO

CONTEXT: Colleague surveys are important sources of information on a doctor's professional performance in UK revalidation plans. Colleague surveys are analysed by deriving quantitative measures from rating scales. As free-text comments are also recorded, we explored the utility of a mixed-methods approach to their analysis. METHODS: A volunteer sample of practising UK doctors (from acute, primary and other care settings) undertook a General Medical Council (GMC) colleague survey. Up to 20 colleagues per doctor completed an online Colleague Questionnaire (CQ), which included 18 performance evaluation items and an optional comment box. The polarity of each comment was noted and a qualitative content analysis undertaken. Emerging themes were mapped onto existing items to identify areas not previously captured. We then quantitatively analysed the associations between the polarity of comments (positive/adverse) and their related item scale scores. RESULTS: A total of 1636 of 4269 (38.3%) colleagues recorded free-text comments (median = 14 per doctor) and most were unequivocally positive; only 127 of 1636 (7.8%) recorded negative statements and these were clustered on a subset comprising 80 of 302 (26.5%) doctors. Doctors' overall mean CQ performance scores were significantly correlated with the numbers of colleagues recording positive (r = 0.35; P < 0.0001) and adverse (r = - 0.40; P = 0.0003) comments. In total, 1224 of 1636 (74.8%) comments included statements that mapped on CQ items, and statistically significant associations (P < 0.05) were observed for 14 of 15 items. Five global themes (innovativeness, interpersonal skills, popularity, professionalism, respect) were identified in 904 of 1636 (73.9%) comments. CONCLUSIONS: There is an inevitable trade-off between the capturing of indicators of problematic performance (i.e. adverse statements which contradict a positive scale rating) and the ease with which such statements can be identified. Our data suggest there is little benefit in routinely analysing narrative comments for the purposes of revalidation.


Assuntos
Atitude do Pessoal de Saúde , Competência Clínica/normas , Avaliação de Desempenho Profissional/métodos , Estudos Transversais , Humanos , Internet , Relações Interprofissionais , Medicina Estatal , Estatística como Assunto , Inquéritos e Questionários , Reino Unido
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA