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1.
Clin Radiol ; : 106709, 2024 Sep 28.
Artículo en Inglés | MEDLINE | ID: mdl-39455291

RESUMEN

PURPOSE: This study examined the literature to compare the accuracy, sensitivity, and specificity of dual-energy subtraction radiography (DESR) with conventional radiography (CR) in the detection of pulmonary nodules. To our knowledge, no meta-analysis has been conducted to compare DESR with CR. MATERIAL AND METHODS: The authors searched Pubmed using the terms "Dual-energy subtraction radiography," and "Dual-Energy Chest Radiography." Only studies comparing the detection of pulmonary nodules between DESR and CR were included. Studies utilizing artificial intelligence were excluded. The primary study outcomes analyzed were the mean difference of receiver operating characteristic area under the curve (ROC AUC), mean difference of sensitivity, and mean difference of specificity. RESULTS: Twenty-three studies between 1994 and 2022 were included. Of these twenty-three, eighteen reported ROC AUC statistics. The difference between DESR ROC AUC (mean = 0.7702, SD = 0.1361) and CR ROC AUC (mean = 0.7106, SD = 0.1183) was 0.0597 (P<0.001). Sensitivity data was reported for thirteen of the twenty-three selected studies. The difference between DESR sensitivity (mean = 0.5753, SD = 0.1546) and CR sensitivity (mean = 0.4391, SD = 0.1007) was 0.136 (P<0.001). Specificity data were reported for ten of the twenty-three selected studies. The difference between DESR specificity (mean = 0.753, SD = 0.1575) and CR specificity (mean = 0.764, SD = 0.1168) was -0.011 (P=0.767). This was not statistically significant. CONCLUSIONS: DESR showed superior sensitivity and ROC AUC values compared with CR in detecting pulmonary nodules. There was no difference in specificity.

2.
Nucleic Acids Res ; 50(D1): D837-D847, 2022 01 07.
Artículo en Inglés | MEDLINE | ID: mdl-34788826

RESUMEN

Since 2005, the Pathogen-Host Interactions Database (PHI-base) has manually curated experimentally verified pathogenicity, virulence and effector genes from fungal, bacterial and protist pathogens, which infect animal, plant, fish, insect and/or fungal hosts. PHI-base (www.phi-base.org) is devoted to the identification and presentation of phenotype information on pathogenicity and effector genes and their host interactions. Specific gene alterations that did not alter the in host interaction phenotype are also presented. PHI-base is invaluable for comparative analyses and for the discovery of candidate targets in medically and agronomically important species for intervention. Version 4.12 (September 2021) contains 4387 references, and provides information on 8411 genes from 279 pathogens, tested on 228 hosts in 18, 190 interactions. This provides a 24% increase in gene content since Version 4.8 (September 2019). Bacterial and fungal pathogens represent the majority of the interaction data, with a 54:46 split of entries, whilst protists, protozoa, nematodes and insects represent 3.6% of entries. Host species consist of approximately 54% plants and 46% others of medical, veterinary and/or environmental importance. PHI-base data is disseminated to UniProtKB, FungiDB and Ensembl Genomes. PHI-base will migrate to a new gene-centric version (version 5.0) in early 2022. This major development is briefly described.


Asunto(s)
Bases de Datos Factuales , Interacciones Huésped-Patógeno/genética , Fenotipo , Interfaz Usuario-Computador , Animales , Apicomplexa/clasificación , Apicomplexa/genética , Apicomplexa/patogenicidad , Bacterias/clasificación , Bacterias/genética , Bacterias/patogenicidad , Diplomonadida/clasificación , Diplomonadida/genética , Diplomonadida/patogenicidad , Hongos/clasificación , Hongos/genética , Hongos/patogenicidad , Insectos/clasificación , Insectos/genética , Insectos/patogenicidad , Internet , Nematodos/clasificación , Nematodos/genética , Nematodos/patogenicidad , Filogenia , Plantas/microbiología , Plantas/parasitología , Virulencia
3.
Ann Oncol ; 33(3): 288-298, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-34921960

RESUMEN

BACKGROUND: For patients with peripheral T-cell lymphoma (PTCL), outcomes using frontline treatment with cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) or CHOP-like therapy are typically poor. The ECHELON-2 study demonstrated that brentuximab vedotin plus cyclophosphamide, doxorubicin, and prednisone (A+CHP) exhibited statistically superior progression-free survival (PFS) per independent central review and improvements in overall survival versus CHOP for the frontline treatment of patients with systemic anaplastic large cell lymphoma or other CD30-positive PTCL. PATIENTS AND METHODS: ECHELON-2 is a double-blind, double-dummy, randomized, placebo-controlled, active-comparator phase III study. We present an exploratory update of the ECHELON-2 study, including an analysis of 5-year PFS per investigator in the intent-to-treat analysis group. RESULTS: A total of 452 patients were randomized (1 : 1) to six or eight cycles of A+CHP (N = 226) or CHOP (N = 226). At median follow-up of 47.6 months, 5-year PFS rates were 51.4% [95% confidence interval (CI): 42.8% to 59.4%] with A+CHP versus 43.0% (95% CI: 35.8% to 50.0%) with CHOP (hazard ratio = 0.70; 95% CI: 0.53-0.91), and 5-year overall survival (OS) rates were 70.1% (95% CI: 63.3% to 75.9%) with A+CHP versus 61.0% (95% CI: 54.0% to 67.3%) with CHOP (hazard ratio = 0.72; 95% CI: 0.53-0.99). Both PFS and OS were generally consistent across key subgroups. Peripheral neuropathy was resolved or improved in 72% (84/117) of patients in the A+CHP arm and 78% (97/124) in the CHOP arm. Among patients who relapsed and subsequently received brentuximab vedotin, the objective response rate was 59% with brentuximab vedotin retreatment after A+CHP and 50% with subsequent brentuximab vedotin after CHOP. CONCLUSIONS: In this 5-year update of ECHELON-2, frontline treatment of patients with PTCL with A+CHP continues to provide clinically meaningful improvement in PFS and OS versus CHOP, with a manageable safety profile, including continued resolution or improvement of peripheral neuropathy.


Asunto(s)
Antígeno Ki-1 , Linfoma de Células T Periférico , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Brentuximab Vedotina , Humanos , Antígeno Ki-1/metabolismo , Antígeno Ki-1/uso terapéutico , Linfoma de Células T Periférico/tratamiento farmacológico , Vincristina/efectos adversos
4.
Health Res Policy Syst ; 18(1): 29, 2020 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-32131848

RESUMEN

BACKGROUND: Systems transformation for health promotion, involving engagement from multiple disciplines and levels of influence, requires an investment in partnership development. Integrated youth service is a collaborative model that brings organisations together to provide holistic care for youth. Frayme is an international knowledge translation network designed to support the uptake and scaling of integrated youth service. Social network analysis (SNA) is the study of relationships among social units and is useful to better understand how partners collaborate within a network to achieve major objectives. The purpose of this paper is to apply SNA to the Frayme network in order to (1) examine the level and strength of partnerships, (2) identify the strategies being employed to promote the main objectives and (3) apply the findings to current research in youth mental health and system transformation. METHODS: The PARTNER tool includes a validated survey and analysis software designed to examine partner interconnections. This tool was used to perform the SNA and 51 of the 75 partners completed the survey (14 researchers, 2 advisory groups and 35 organisations). A network map was created and descriptive frequencies were calculated. RESULTS: The overall network scores for the Frayme network were 20.6% for density, 81.5% for centralisation and 71.7% for overall trust. The Frayme secretariat received a 3.84 out of a possible 4 for value. In addition, the youth and family advisories each received a value score of 4 and all Leadership Team organisations received a score of 2.97 or above. CONCLUSIONS: The Frayme secretariat links many partners who would otherwise be disconnected and acts as a significant conduit for novel information. Frayme may have the opportunity to enhance value perceptions among broader network members by profiling individual organisations and the potential leveraging opportunities that might exist through their work. These findings increase understanding with respect to the mechanisms of network development and will be helpful to inform partnership development in the future. In addition, they contribute to the literature with respect to knowledge translation practice as well as the scaling of collaborative interventions within youth mental health.


Asunto(s)
Servicios de Salud del Adolescente/organización & administración , Promoción de la Salud/organización & administración , Agencias Internacionales/organización & administración , Cooperación Internacional , Servicios de Salud Mental/organización & administración , Red Social , Investigación Biomédica Traslacional/organización & administración , Adolescente , Niño , Humanos , Encuestas y Cuestionarios
5.
Breast Cancer Res Treat ; 174(3): 719-729, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30632023

RESUMEN

PURPOSE: In the initial PALOMA-2 (NCT01740427) analysis with median follow-up of 23 months, palbociclib plus letrozole significantly prolonged progression-free survival (PFS) in women with estrogen receptor-positive (ER+)/human epidermal growth factor receptor 2-negative (HER2-) advanced breast cancer (ABC) [hazard ratio (HR) 0.58; P < 0.001]. Herein, we report results overall and by subgroups with extended follow-up. METHODS: In this double-blind, phase 3 study, post-menopausal women with ER+/HER2- ABC who had not received prior systemic therapy for their advanced disease were randomized 2:1 to palbociclib-letrozole or placebo-letrozole. Endpoints include investigator-assessed PFS (primary), safety, and patient-reported outcomes (PROs). RESULTS: After a median follow-up of approximately 38 months, median PFS was 27.6 months for palbociclib-letrozole (n = 444) and 14.5 months for placebo-letrozole (n = 222) (HR 0.563; 1-sided P < 0.0001). All subgroups benefited from palbociclib treatment. The improvement of PFS with palbociclib-letrozole was maintained in the next 2 subsequent lines of therapy and delayed the use of chemotherapy (40.4 vs. 29.9 months for palbociclib-letrozole vs. placebo-letrozole). Safety data were consistent with the known profile. Patients' quality of life was maintained. CONCLUSIONS: With approximately 15 months of additional follow-up, palbociclib plus letrozole continued to demonstrate improved PFS compared with placebo plus letrozole in the overall population and across all patient subgroups, while the safety profile remained favorable and quality of life was maintained. These data confirm that palbociclib-letrozole should be considered the standard of care for first-line therapy in patients with ER+/HER2- ABC, including those with low disease burden or long disease-free interval. Sponsored by Pfizer; ClinicalTrials.gov: NCT01740427.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias de la Mama/tratamiento farmacológico , Letrozol/administración & dosificación , Piperazinas/administración & dosificación , Piridinas/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/psicología , Método Doble Ciego , Femenino , Humanos , Letrozol/efectos adversos , Piperazinas/efectos adversos , Posmenopausia/psicología , Piridinas/efectos adversos , Calidad de Vida/psicología , Receptor ErbB-2/metabolismo , Receptores de Estrógenos/metabolismo , Resultado del Tratamiento
6.
Acta Psychiatr Scand ; 139(4): 336-347, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30712261

RESUMEN

OBJECTIVE: The experience of pre-onset subthreshold psychotic symptoms (STPS, signifying a clinical high-risk state) in first episode psychosis (FEP) predicts poorer outcomes during treatment, possibly through differential adherence to medication. We explored whether adherence differs between FEP patients with and without pre-onset STPS. METHODS: Antipsychotic medication adherence was compared in 263 STPS+ and 158 STPS- subjects in a specialized early intervention program for FEP. Data were gathered from a larger observational study conducted between 2003 and 2016. STPS status, sociodemographic, and baseline clinical variables were tested as predictors of non-adherence using univariate and multivariate logistic regressions. Time to onset of non-adherence was analyzed using Kaplan-Meier curves. The same predictors were tested as predictors of time to onset of non-adherence using Cox regression models. RESULTS: Medication non-adherence was higher in STPS+ participants (78.9% vs. 68.9%). STPS status (OR 1.709), substance use disorder (OR 1.767), and milder positive symptoms (OR 0.972) were significant baseline predictors of non-adherence. Substance use disorder (HR 1.410), milder positive symptoms (HR 0.990), and lack of contact between the clinical team and relatives (HR 1.356) were significant baseline predictors of time to non-adherence. CONCLUSION: FEP patients who experience pre-onset STPS are more likely to be non-adherent to antipsychotic medication over 2 years of intervention. FEP programs should routinely evaluate pre-onset symptomatology to deliver more personalized treatments, with emphasis on engaging both patients and family members from the beginning of care.


Asunto(s)
Antipsicóticos/administración & dosificación , Cumplimiento de la Medicación , Síntomas Prodrómicos , Trastornos Psicóticos/tratamiento farmacológico , Trastornos Psicóticos/fisiopatología , Adolescente , Adulto , Femenino , Humanos , Masculino , Cumplimiento de la Medicación/estadística & datos numéricos , Trastornos Psicóticos/epidemiología , Quebec/epidemiología , Riesgo , Adulto Joven
7.
Acta Psychiatr Scand ; 140(1): 65-76, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-30963544

RESUMEN

OBJECTIVE: To test whether duration of untreated psychosis (DUP) < 3 months, recommended by the World Health Organization/International Early Psychosis Association, enhances the effects of an extended early intervention service (EEIS) on symptom remission. METHOD: We examined data from a randomized controlled trial in which patients who received 2 years of treatment in EIS for psychosis were subsequently randomized to either 3 years of EEIS or 3 years of regular care (RC). Using a DUP cut-off ≤ 12 weeks (approximately < 3 months), patients were split into two groups. Length of positive, negative and total symptom remission were the outcomes. RESULTS: Patients (N = 217) were mostly male (68%) with schizophrenia spectrum disorder (65%); 108 (50%) received EEIS (58 had DUP ≤12 weeks; 50 had DUP >12 weeks). Interaction between treatment condition (EEIS vs. RC) and DUP cut-off ≤ 12 weeks was only significant in multiple linear regression model examining length of negative symptom remission as the outcome (adjusted ß = 36.88 [SE = 15.88], t = 2.32, P = 0.02). EEIS patients with DUP ≤12 weeks achieved 25 more weeks of negative symptom remission than EEIS patients with DUP >12 weeks. CONCLUSION: Having a short DUP may be critical in deriving long-term benefits from EIS for psychosis, including EEIS settings. This work empirically supports policy recommendations of reducing DUP <3 months.


Asunto(s)
Intervención Médica Temprana , Accesibilidad a los Servicios de Salud , Servicios de Salud Mental , Evaluación de Procesos y Resultados en Atención de Salud , Trastornos Psicóticos/terapia , Esquizofrenia/terapia , Adolescente , Adulto , Femenino , Humanos , Masculino , Trastornos Psicóticos/fisiopatología , Inducción de Remisión , Esquizofrenia/fisiopatología , Factores de Tiempo , Adulto Joven
8.
Ann Oncol ; 29(4): 888-894, 2018 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-29360932

RESUMEN

Background: Patient-reported outcomes are integral in benefit-risk assessments of new treatment regimens. The PALOMA-2 study provides the largest body of evidence for patient-reported health-related quality of life (QOL) for patients with metastatic breast cancer (MBC) receiving first-line endocrine-based therapy (palbociclib plus letrozole and letrozole alone). Patients and methods: Treatment-naïve postmenopausal women with estrogen receptor-positive (ER+)/human epidermal growth factor receptor 2-negative (HER2-) MBC were randomized 2 : 1 to palbociclib plus letrozole (n = 444) or placebo plus letrozole (n = 222). Patient-reported outcomes were assessed at baseline, day 1 of cycles 2 and 3, and day 1 of every other cycle from cycle 5 using the Functional Assessment of Cancer Therapy (FACT)-Breast and EuroQOL 5 dimensions (EQ-5D) questionnaires. Results: As of 26 February 2016, the median duration of follow-up was 23 months. Baseline scores were comparable between the two treatment arms. No significant between-arm differences were observed in change from baseline in FACT-Breast Total, FACT-General Total, or EQ-5D scores. Significantly greater improvement in pain scores was observed in the palbociclib plus letrozole arm (-0.256 versus -0.098; P = 0.0183). In both arms, deterioration of FACT-Breast Total score was significantly delayed in patients without progression versus those with progression and patients with partial or complete response versus those without. No significant difference was observed in FACT-Breast and EQ-5D index scores in patients with and without neutropenia. Conclusions: Overall, women with MBC receiving first-line endocrine therapy have a good QOL. The addition of palbociclib to letrozole maintains health-related QOL and improves pain scores in treatment-naïve postmenopausal patients with ER+/HER2- MBC compared with letrozole alone. Significantly greater delay in deterioration of health-related QOL was observed in patients without progression versus those who progressed and in patients with an objective response versus non-responders. ClinicalTrials.gov: NCT01740427 (https://clinicaltrials.gov/ct2/show/NCT01740427).


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Letrozol/administración & dosificación , Piperazinas/administración & dosificación , Piridinas/administración & dosificación , Calidad de Vida , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/fisiopatología , Método Doble Ciego , Femenino , Humanos , Persona de Mediana Edad , Placebos , Posmenopausia
9.
Ann Oncol ; 29(3): 669-680, 2018 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-29342248

RESUMEN

Background: This report assesses the efficacy and safety of palbociclib plus endocrine therapy (ET) in women with hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer (ABC) with or without visceral metastases. Patients and methods: Pre- and postmenopausal women with disease progression following prior ET (PALOMA-3; N = 521) and postmenopausal women untreated for ABC (PALOMA-2; N = 666) were randomized 2 : 1 to ET (fulvestrant or letrozole, respectively) plus palbociclib or placebo. Progression-free survival (PFS), safety, and patient-reported quality of life (QoL) were evaluated by prior treatment and visceral involvement. Results: Visceral metastases incidence was higher in patients with prior resistance to ET (58.3%, PALOMA-3) than in patients naive to ET in the ABC setting (48.6%, PALOMA-2). In patients with prior resistance to ET and visceral metastases, median PFS (mPFS) was 9.2 months with palbociclib plus fulvestrant versus 3.4 months with placebo plus fulvestrant [hazard ratio (HR), 0.47; 95% confidence interval (CI), 0.35-0.61], and objective response rate (ORR) was 28.0% versus 6.7%, respectively. In patients with nonvisceral metastases, mPFS was 16.6 versus 7.3 months, HR 0.53; 95% CI 0.36-0.77. In patients with visceral disease and naive to ET in the advanced disease setting, mPFS was 19.3 months with palbociclib plus letrozole versus 12.9 months with placebo plus letrozole (HR 0.63; 95% CI 0.47-0.85); ORR was 55.1% versus 40.0%; in patients with nonvisceral disease, mPFS was not reached with palbociclib plus letrozole versus 16.8 months with placebo plus letrozole (HR 0.50; 95% CI 0.36-0.70). In patients with prior resistance to ET with visceral metastases, palbociclib plus fulvestrant significantly delayed deterioration of QoL versus placebo plus fulvestrant, whereas patient-reported QoL was maintained with palbociclib plus letrozole in patients naive to endocrine-based therapy for ABC. Conclusions: Palbociclib plus ET prolonged mPFS in patients with visceral metastases, increased ORRs, and in patients previously treated for ABC, delayed QoL deterioration, presenting a standard treatment option among patients with visceral metastases amenable to endocrine-based therapy. Clinical trial registration: NCT01942135, NCT01740427.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Metástasis de la Neoplasia/tratamiento farmacológico , Piperazinas/administración & dosificación , Piridinas/administración & dosificación , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos Hormonales/uso terapéutico , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/patología , Femenino , Fulvestrant/administración & dosificación , Humanos , Letrozol/administración & dosificación , Persona de Mediana Edad , Supervivencia sin Progresión , Calidad de Vida , Vísceras
10.
Public Health ; 164: 49-56, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30189388

RESUMEN

OBJECTIVES: To explore the vulnerabilities and risks of HIV infection among female migrants compared with male migrants in the Thane district of Maharashtra, India. STUDY DESIGN: This is a cross-sectional epidemiological study. METHODS: Data from 35,841 migrants (men 96.2% and women 3.8%) were collected using the web-based 'Migrant Service Delivery System.' The data were then analysed in SPSS, version 23.0. Statistical analysis, including Chi-squared test and multivariate logistic regression, was used to identify factors influencing HIV infection for both male and female migrants. RESULTS: It was observed that 2.96% of female migrants had HIV infection compared with 0.77% of male migrants. We found that 12.1% of women consumed alcohol compared with 41.9% of men, and access to bars was 1.5% among women and 3.5% in men. We observed an even larger difference between men and women in their previous history of using brothels for sex; only 5.9% of female migrants reported previously having used brothels for sex, compared with 62.9% of male migrants. Approximately 12.3% of married women and 93.6% of married men had sex with someone other than their spouse. We found that 67.0% of married women and 73.9% of married men reported using a condom during their last sexual act compared with 60.9% of unmarried women and 68.1% of unmarried men. CONCLUSIONS: In Thane, female migrants faced higher vulnerabilities and risks of HIV infection than male migrants. Consequently, innovative strategies are required to address these particular needs of female migrants.


Asunto(s)
Infecciones por VIH/epidemiología , Migrantes/estadística & datos numéricos , Poblaciones Vulnerables , Adolescente , Adulto , Estudios Transversales , Femenino , Humanos , India/epidemiología , Masculino , Persona de Mediana Edad , Factores de Riesgo , Factores Socioeconómicos , Adulto Joven
11.
J Assoc Physicians India ; 66(4): 55-9, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-30347954

RESUMEN

Sleep is essential for physical, mental and emotional well being. Body systems require sleep of good quality and quantity for their proper functioning. There are several sleep disorders. Obstructive sleep apnea hypopnea syndrome (OSAHS) is one of the most important disorders identified in the last 50 years. The disorder has systemic ill effects by virtue of cyclical hypoxia and sympathetic stimulation. It is a risk factor for the development of hypertension, ischemic heart disease, type 2 diabetes mellitus, stroke and dementia. Retina being the highest oxygen consuming part of the body, is particularly vulnerable to the effects of hypoxia. Several eye disorders have been identified to be associated with OSAHS. In clinical practice Identifying and treating sleep disorders have been rewarding.


Asunto(s)
Oftalmopatías/epidemiología , Apnea Obstructiva del Sueño/epidemiología , Diabetes Mellitus Tipo 2 , Oftalmopatías/complicaciones , Humanos , Hipertensión , Polisomnografía , Sueño , Apnea Obstructiva del Sueño/complicaciones
12.
Curr Oncol ; 25(1): e40-e49, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29507494

RESUMEN

BACKGROUND: Crizotinib has shown greater efficacy in clinical trials than chemotherapy in patients with anaplastic lymphoma kinase-positive (alk+) non-small cell lung cancer (nsclc), but little information is available on its use and outcomes in real-world settings. We therefore assessed treatment patterns and outcomes in alk+ nsclc patients treated with crizotinib in regular clinical practice. METHODS: A retrospective medical record review was conducted in North America for adults with alk+ nsclc treated with crizotinib as first- or later-line therapy for metastatic disease between 1 August 2011 and 31 March 2013 (for the United States) or 1 May 2012 and 31 March 2013 (for Canada). Crizotinib-related trial enrollees were excluded. Descriptive analyses were conducted to assess treatment patterns and objective response rate (orr). Progression-free survival (pfs) and overall survival (os) were descriptively analyzed using Kaplan-Meier methods. RESULTS: Data were extracted for 212 patients in the United States (n = 147) and Canada (n = 65). Mean (standard deviation [sd]) age was 58.9 (9.5) years, and 69% were male. Seventy-nine patients (37%) were deceased at record abstraction. Sixty-five percent (n = 137) initiated crizotinib as first-line therapy. Mean (sd) duration of crizotinib treatment was 8.7 (4.9) months. Objective response rate was 66% (69% for first-line recipients, 60% for second-/later-line). Median (95% ci) pfs and os from crizotinib initiation were 9.5 (8.7, 10.1) and 23.4 (19.5, -) months, respectively. One- and two-year survival probabilities were 82% and 49%, respectively. CONCLUSIONS: Outcomes for crizotinib recipients in this study align with previous trials, with orr appearing more favourable in first-line recipients. Our findings indicate that crizotinib outcomes in clinical studies may translate to regular clinical practice.

13.
Ann Oncol ; 27(6): 1047-1054, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-27029704

RESUMEN

BACKGROUND: In the PALOMA-3 study, palbociclib plus fulvestrant demonstrated improved progression-free survival compared with fulvestrant plus placebo in hormone receptor-positive, HER2- endocrine-resistant metastatic breast cancer (MBC). This analysis compared patient-reported outcomes (PROs) between the two treatment groups. PATIENTS AND METHODS: Patients were randomized 2 : 1 to receive palbociclib 125 mg/day orally for 3 weeks followed by 1 week off (n = 347) plus fulvestrant (500 mg i.m. per standard of care) or placebo plus fulvestrant (n = 174). PROs were assessed on day 1 of cycles 1-4 and of every other subsequent cycle starting with cycle 6 using the EORTC QLQ-C30 and its breast cancer module, QLQ-BR23. High scores (range 0-100) could indicate better functioning/quality of life (QoL) or worse symptom severity. Repeated-measures mixed-effect analyses were carried out to compare on-treatment overall scores and changes from baseline between treatment groups while controlling for baseline. Between-group comparisons of time to deterioration in global QoL and pain were made using an unstratified log-rank test and Cox proportional hazards model. RESULTS: Questionnaire completion rates were high at baseline and during treatment (from baseline to cycle 14, ≥95.8% in each group completed ≥1 question on the EORTC QLQ-C30). On treatment, estimated overall global QoL scores significantly favored the palbociclib plus fulvestrant group [66.1, 95% confidence interval (CI) 64.5-67.7 versus 63.0, 95% CI 60.6-65.3; P = 0.0313]. Significantly greater improvement from baseline in pain was also observed in this group (-3.3, 95% CI -5.1 to -1.5 versus 2.0, 95% CI -0.6 to 4.6; P = 0.0011). No significant differences were observed for other QLQ-BR23 functioning domains, breast or arm symptoms. Treatment with palbociclib plus fulvestrant significantly delayed deterioration in global QoL (P < 0.025) and pain (P < 0.001) compared with fulvestrant alone. CONCLUSION: Palbociclib plus fulvestrant allowed patients to maintain good QoL in the endocrine resistance setting while experiencing substantially delayed disease progression. CLINICAL TRIAL REGISTRATION: NCT01942135.


Asunto(s)
Neoplasias de la Mama/tratamiento farmacológico , Estradiol/análogos & derivados , Piperazinas/administración & dosificación , Piridinas/administración & dosificación , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias de la Mama/genética , Neoplasias de la Mama/patología , Supervivencia sin Enfermedad , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/patología , Estradiol/administración & dosificación , Estradiol/efectos adversos , Femenino , Fulvestrant , Humanos , Persona de Mediana Edad , Medición de Resultados Informados por el Paciente , Piperazinas/efectos adversos , Piridinas/efectos adversos , Calidad de Vida , Receptor ErbB-2/genética , Receptores de Estrógenos/genética
14.
Stem Cells ; 33(3): 848-58, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25402778

RESUMEN

Promoting the expansion of adult stem cell populations offers the potential to ameliorate radiation or chemotherapy-induced bone marrow failure and allows for expedited recovery for patients undergoing these therapies. Previous genetic studies suggested a pivotal role for SH2 domain-containing inositol-5-phosphatase 1 (SHIP1) in limiting the size of the hematopoietic stem cell (HSC) compartment. The aim of this study was to determine whether our recent development of small molecule SHIP1 inhibitors offers the potential for pharmacological expansion of the HSC compartment in vivo. We show here that treatment of mice with aminosteroid inhibitors of SHIP1 (SHIPi) more than doubles the size of the adult mesenchymal stem cell (MSC) compartment while simultaneously expanding the HSC pool sixfold. Consistent with its ability to target SHIP1 function in vivo, SHIPi also significantly increases plasma granulocyte colony-stimulating factor (G-CSF) levels, a growth factor that supports proliferation of HSC. Here, we show that SHIPi-induced G-CSF production mediates HSC and MSC expansion, as in vivo neutralization of G-CSF abrogates the SHIPi-induced expansion of both the HSC and MSC compartments. Due to its expansionary effect on adult stem cell compartments, SHIPi represents a potential novel strategy to improve declining stem cell function in both therapy induced and genetically derived bone marrow failure syndromes.


Asunto(s)
Células Madre Hematopoyéticas/citología , Células Madre Hematopoyéticas/efectos de los fármacos , Células Madre Mesenquimatosas/citología , Células Madre Mesenquimatosas/efectos de los fármacos , Monoéster Fosfórico Hidrolasas/farmacología , Animales , Movimiento Celular/efectos de los fármacos , Movimiento Celular/fisiología , Factor Estimulante de Colonias de Granulocitos/biosíntesis , Células Madre Hematopoyéticas/metabolismo , Inositol Polifosfato 5-Fosfatasas , Masculino , Células Madre Mesenquimatosas/metabolismo , Ratones , Ratones Endogámicos C57BL , Fosfatidilinositol-3,4,5-Trifosfato 5-Fosfatasas
15.
Environ Sci Technol ; 50(5): 2200-9, 2016 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-26811969

RESUMEN

We present measurements as part of the Southern Oxidant and Aerosol Study (SOAS) during which atmospheric aerosol particles were comprehensively characterized. We present results utilizing a Filter Inlet for Gases and AEROsol coupled to a chemical ionization mass spectrometer (CIMS). We focus on the volatility and composition of isoprene derived organic aerosol tracers and of the bulk organic aerosol. By utilizing the online volatility and molecular composition information provided by the FIGAERO-CIMS, we show that the vast majority of commonly reported molecular tracers of isoprene epoxydiol (IEPOX) derived secondary organic aerosol (SOA) is derived from thermal decomposition of accretion products or other low volatility organics having effective saturation vapor concentrations <10(-3) µg m(-3). In addition, while accounting for up to 30% of total submicrometer organic aerosol mass, the IEPOX-derived SOA has a higher volatility than the remaining bulk. That IEPOX-SOA, and more generally bulk organic aerosol in the Southeastern U.S. is comprised of effectively nonvolatile material has important implications for modeling SOA derived from isoprene, and for mechanistic interpretations of molecular tracer measurements. Our results show that partitioning theory performs well for 2-methyltetrols, once accretion product decomposition is taken into account. No significant partitioning delays due to aerosol phase or viscosity are observed, and no partitioning to particle-phase water or other unexplained mechanisms are needed to explain our results.


Asunto(s)
Aerosoles/química , Monitoreo del Ambiente/métodos , Aerosoles/análisis , Atmósfera/química , Butadienos/química , Gases , Hemiterpenos/química , Espectrometría de Masas/métodos , Pentanos/química , Sudeste de Estados Unidos , Volatilización
16.
Ann Oncol ; 26(4): 774-779, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25605745

RESUMEN

BACKGROUND: For patients with peripheral T-cell lymphoma (PTCL), the value of (18)fluoro-deoxyglucose positron emission tomography (FDG-PET) scans for assessing prognosis and response to treatment remains unclear. The utility of FDG-PET, in addition to conventional radiology, was examined as a planned exploratory end point in the pivotal phase 2 trial of romidepsin for the treatment of relapsed/refractory PTCL. PATIENTS AND METHODS: Patients received romidepsin at a dose of 14 mg/m(2) on days 1, 8, and 15 of 28-day cycles. The primary end point was the rate of confirmed/unconfirmed complete response (CR/CRu) as assessed by International Workshop Criteria (IWC) using conventional radiology. For the exploratory PET end point, patients with at least baseline FDG-PET scans were assessed by IWC + PET criteria. RESULTS: Of 130 patients, 110 had baseline FDG-PET scans, and 105 were PET positive at baseline. The use of IWC + PET criteria increased the objective response rate to 30% compared with 26% by conventional radiology. Durations of response were well differentiated by both conventional radiology response criteria [CR/CRu versus partial response (PR), P = 0.0001] and PET status (negative versus positive, P < 0.0001). Patients who achieved CR/CRu had prolonged progression-free survival (PFS, median 25.9 months) compared with other response groups (P = 0.0007). Patients who achieved PR or stable disease (SD) had similar PFS (median 7.2 and 6.3 months, respectively, P = 0.6427). When grouping PR and SD patients by PET status, patients with PET-negative versus PET-positive disease had a median PFS of 18.2 versus 7.1 months (P = 0.0923). CONCLUSIONS: Routine use of FDG-PET does not obviate conventional staging, but may aid in determining prognosis and refine response assessments for patients with PTCL, particularly for those who do not achieve CR/CRu by conventional staging. The optimal way to incorporate FDG-PET scans for patients with PTCL remains to be determined. TRIAL REGISTRATION: NCT00426764.


Asunto(s)
Antibióticos Antineoplásicos/uso terapéutico , Depsipéptidos/uso terapéutico , Resistencia a Antineoplásicos/efectos de los fármacos , Fluorodesoxiglucosa F18/farmacocinética , Linfoma de Células T Periférico/diagnóstico por imagen , Tomografía de Emisión de Positrones/estadística & datos numéricos , Estudios de Seguimiento , Humanos , Linfoma de Células T Periférico/tratamiento farmacológico , Linfoma de Células T Periférico/mortalidad , Linfoma de Células T Periférico/patología , Estadificación de Neoplasias , Pronóstico , Estudios Prospectivos , Radiofármacos/farmacocinética , Inducción de Remisión , Tasa de Supervivencia , Distribución Tisular
17.
Birth Defects Res B Dev Reprod Toxicol ; 104(2): 71-89, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26017137

RESUMEN

INTRODUCTION: The U.S. Environmental Protection Agency's (EPA's) Toxicity Forecaster (ToxCast) is a potential tool for chemical prioritization, hazard identification, and risk assessment. We conducted a case study to compare ToxCast data with endpoints from other in vitro and in vivo studies for two data-rich pesticides: endosulfan and methidathion. METHODS: ToxCast assays for endocrine disruption, development (zebrafish), and neurotoxicity were qualitatively compared to traditional neurotoxicity, developmental and reproductive toxicity findings. We also used in vitro-in vivo extrapolation to convert half-maximal activity concentrations in active ToxCast assays to rat oral equivalent doses, and quantitatively compared these to the lowest observable effect level (LOEL) from in vivo studies. RESULTS: Endosulfan was inactive for GABAA R, unlike in vivo; but active with dopamine transporter assays and was neurotoxic in zebrafish as expected. Methidathion was not active for these endpoints in vivo or in vitro. Acetylcholinesterase inhibition was ToxCast-inactive, although both pesticides are inhibitors in vivo. ToxCast results were generally inactive for endosulfan estrogen receptor agonism and androgen receptor antagonism unlike in vivo. Calculated oral equivalent doses for estrogen receptor and androgen receptor pathways and for zebrafish assays for both compounds were generally consistent with in vivo LOELs. Endosulfan showed neurotoxicity and both pesticides showed developmental effects in the zebrafish assays, although methidathion is not developmentally toxic in vivo. CONCLUSIONS: ToxCast's predictions showed concordance on some endpoints and nonconcordance, consisting mainly of false inactives, in several critical endpoints, likely due to a lack of metabolic activation and limitations in assay design. Zebrafish assays were good predictors of developmental toxicity and neurotoxicity for endosulfan.


Asunto(s)
Desarrollo Embrionario/efectos de los fármacos , Sistema Endocrino/efectos de los fármacos , Endosulfano/toxicidad , Sistema Nervioso/efectos de los fármacos , Compuestos Organotiofosforados/toxicidad , Pruebas de Toxicidad/métodos , Pez Cebra/crecimiento & desarrollo , Animales , Embrión no Mamífero/citología , Embrión no Mamífero/efectos de los fármacos , Ensayos Analíticos de Alto Rendimiento , Humanos , Técnicas In Vitro , Insecticidas/toxicidad , Ratones , Conejos , Ratas , Medición de Riesgo
18.
J Postgrad Med ; 60(3): 332-4, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25121381

RESUMEN

Chanarin-Dorfman syndrome (CDS) is a multisystem, autosomal recessive genetic disorder characterized by congenital non-bullous ichthyosiform erythroderma with accumulation of lipid droplets in granulocytes and basal keratinocytes. An 18-month-old female child presented with typical dermatological features of CDS. She was born as a collodion baby. Liver biopsy showed micronodular cirrhosis along with macrovesicular hepatic steatosis. Sequencing of all exons and exon-intron boundaries of the ABHD5 gene showed that the patient was homozygous for a novel mutation g.24947delG (c.773 + 1delG) in intron 5. This is the first Indian child with mutation proven CDS.


Asunto(s)
1-Acilglicerol-3-Fosfato O-Aciltransferasa/genética , Eritrodermia Ictiosiforme Congénita/genética , Errores Innatos del Metabolismo Lipídico/genética , Enfermedades Musculares/genética , Biopsia , Análisis Mutacional de ADN , Femenino , Humanos , Ictiosis Lamelar , Lactante , Hígado/patología , Enfermedades Musculares/congénito , Mutación , Piel/patología
20.
Front Psychiatry ; 15: 1429135, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39421063

RESUMEN

Background: Early intervention services (EIS) for psychosis have proven highly effective in treating first episode psychosis. Yet, retention or "engagement" in EIS remains highly variable. Dis/engagement as a contested concept and fluid process involving relationships between service providers and service users remains poorly understood. This study aimed to critically evaluate and explain the dynamic interplay of service provider-user relationships in effecting dis/engagement from an early intervention program for psychosis. Methods: Forty study participants, 16 service providers and 24 service users (19 current and 5 disengaged) from a Canadian EIS program, were administered semi-structured interviews. Qualitative analysis was conducted using grounded theory methods, with findings captured and reconceptualized in a novel explanatory model. Findings: A model of engagement with eight major domains of engagement in EIS positioned along a control-autonomy spectrum was developed from the findings, with Clinical engagement (attendance) and Life engagement (life activities) at opposite ends of the spectrum, interspersed by six intermediate domains: Medication/treatment, Symptoms/illness, Mental health, Physical health/wellness, Communication, and Relationships, each domain bearing uniquely on engagement. Conclusions: An examination of service user and service provider perspectives on the various domains identified in the spectrum model, and their dynamic interplay, reveals the complexity of choices faced by service users in engaging and not engaging with services.

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