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1.
Trials ; 24(1): 365, 2023 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-37254217

RESUMEN

BACKGROUND: An increasing number of older people are living with chronic kidney disease (CKD). Many have complex healthcare needs and are at risk of deteriorating health and functional status, which can adversely affect their quality of life. Comprehensive geriatric assessment (CGA) is an effective intervention to improve survival and independence of older people, but its clinical utility and cost-effectiveness in frail older people living with CKD is unknown. METHODS: The GOAL Trial is a pragmatic, multi-centre, open-label, superiority, cluster randomised controlled trial developed by consumers, clinicians, and researchers. It has a two-arm design, CGA compared with standard care, with 1:1 allocation of a total of 16 clusters. Within each cluster, study participants ≥ 65 years of age (or ≥ 55 years if Aboriginal or Torres Strait Islander (First Nations Australians)) with CKD stage 3-5/5D who are frail, measured by a Frailty Index (FI) of > 0.25, are recruited. Participants in intervention clusters receive a CGA by a geriatrician to identify medical, social, and functional needs, optimise medication prescribing, and arrange multidisciplinary referral if required. Those in standard care clusters receive usual care. The primary outcome is attainment of self-identified goals assessed by standardised Goal Attainment Scaling (GAS) at 3 months. Secondary outcomes include GAS at 6 and 12 months, quality of life (EQ-5D-5L), frailty (Frailty Index - Short Form), transfer to residential aged care facilities, cost-effectiveness, and safety (cause-specific hospitalisations, mortality). A process evaluation will be conducted in parallel with the trial including whether the intervention was delivered as intended, any issue or local barriers to intervention delivery, and perceptions of the intervention by participants. The trial has 90% power to detect a clinically meaningful mean difference in GAS of 10 units. DISCUSSION: This trial addresses patient-prioritised outcomes. It will be conducted, disseminated and implemented by clinicians and researchers in partnership with consumers. If CGA is found to have clinical and cost-effectiveness for frail older people with CKD, the intervention framework could be embedded into routine clinical practice. The implementation of the trial's findings will be supported by presentations at conferences and forums with clinicians and consumers at specifically convened workshops, to enable rapid adoption into practice and policy for both nephrology and geriatric disciplines. It has potential to materially advance patient-centred care and improve clinical and patient-reported outcomes (including quality of life) for frail older people living with CKD. TRIAL REGISTRATION: ClinicalTrials.gov NCT04538157. Registered on 3 September 2020.


Asunto(s)
Fragilidad , Insuficiencia Renal Crónica , Anciano , Humanos , Persona de Mediana Edad , Anciano Frágil , Fragilidad/diagnóstico , Fragilidad/terapia , Objetivos , Evaluación Geriátrica , Calidad de Vida , Australia , Insuficiencia Renal Crónica/diagnóstico , Insuficiencia Renal Crónica/terapia , Ensayos Clínicos Controlados Aleatorios como Asunto , Estudios Multicéntricos como Asunto
2.
Aust Health Rev ; 45(6): 696-703, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34856118

RESUMEN

Objective This study examined the content and impact of a new digital communication medium, called a VIDCAST, implemented at a large hospital and health service when the COVID-19 pandemic was announced, and the key concerns held by staff at the time when the health service was preparing for the COVID-19 pandemic to arrive in this health service. Methods A mixed-methods approach was used. Thematic analysis of 20 transcripts of daily VIDCASTS broadcast between 30 March and 24 April 2020 was undertaken, in addition to descriptive analysis of feedback from an anonymous online survey. Results Survey feedback from 322 staff indicated almost universal satisfaction with this new communication method. The VIDCASTS provided a new COVID-safe method for the Executive to connect to staff at a time of uncertainty. Thematic analysis of the content of the VIDCASTS revealed three themes: 'Accurate Information', 'Reassurance and Support' and 'Innovation'. The Executive was able to reassure staff about what the organisation was doing to safeguard the health and wellbeing of all, and enabled an effective response to the pandemic. Conclusions The digital communication channel of VIDCASTS, rapidly operationalised at a major Australian hospital and health service in March 2020, provided important information and support for staff as it prepared for the anticipated COVID-19 surge. What is known about the topic? When the COVID-19 pandemic began, traditional face-to-face staff meetings were disrupted and many hospitals and their staff were left scrambling for information, and for reassurance about their safety, as they prepared to receive increasing numbers of COVID-19 patients. What does this paper add? The implementation of a digital communication tool was able to address many of the concerns raised by hospital staff in other geographic locations dealing with surging COVID-19 cases and underpinned a globally leading COVID-19 response. What are the implications for practitioners? New digitised communication methods provided an effective vehicle to inform and support staff in the early stages of pandemic preparation.


Asunto(s)
COVID-19 , Pandemias , Australia/epidemiología , Comunicación , Humanos , Pandemias/prevención & control , SARS-CoV-2
3.
Bone Marrow Transplant ; 50(5): 721-6, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25706885

RESUMEN

Pediatric cancer patients are at increased risk of subsequent malignant neoplasms (SMNs). However, little is known about the contribution of hematopoietic SCT (HSCT) to the development of SMNs. The objective of this study was to compare the incidence of SMNs in a population cohort of childhood cancer survivors treated with and without HSCT. A cohort of 7986 children (age 0-14 years) diagnosed with cancer in the province of Ontario, Canada between 1985 and 2009 was identified in POGONIS (Pediatric Oncology Group of Ontario Networked Information System), a population-based active cancer registry, and linked to a clinical HSCT database. Among this cohort, 796 patients had an HSCT as part of their primary treatment. Of the 375 allogeneic HSCT patients, 14 (3.7%) developed a SMN at a median follow-up of 12.3 years (range: 2.0-22.9 years). Of the 421 autologous HSCT patients, 8 (1.9%) developed a SMN at a median of 4.5 years (range: 1.3-14.3 years). Of the 7190 patients who did not receive an HSCT, 160 (2.2%) developed a SMN at a median follow-up of 6.8 years (range: 0.0-24.9 years). The 15-year cumulative incidence of SMN was 3.1% among the allogeneic HSCT group, 2.5% among the autologous group and 2.3% in the non-HSCT group. The cumulative incidence curves for the allogeneic HSCT and non-transplant groups only diverged after ~15 years from primary diagnosis. Our findings further corroborate the observation that children who undergo allogeneic HSCT are at a significantly increased risk of developing SMN compared with pediatric cancer survivors treated without HSCT.


Asunto(s)
Bases de Datos Factuales , Trasplante de Células Madre Hematopoyéticas , Neoplasias Primarias Secundarias/epidemiología , Sistema de Registros , Adolescente , Adulto , Aloinjertos , Autoinjertos , Niño , Preescolar , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Lactante , Masculino , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo
4.
Bone Marrow Transplant ; 48(10): 1291-5, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23665822

RESUMEN

Hematopoietic SCT (HSCT) has been used as a curative therapy for pediatric malignancies. Survivors of HSCT are at risk for disease recurrence, late morbidity and mortality. We assessed late mortality (≥2 years post-HSCT) in a population-based cohort of children who underwent HSCT for a malignancy. Mortality outcomes were determined by linking a clinical transplant database with the Canadian province of Ontario's pediatric cancer mortality files. Seven hundred and fifty-four children underwent HSCT (371 allogeneic, 383 autologous). Of the 479 (63.5%) who were alive ≥2 years post HSCT, 98 (20.5%) suffered a late death. Late mortality in the allogeneic HSCT group was 14.9% (median follow-up 10.0 years; range: 2.0-25.6 years), mainly due to relapse of the primary malignancy (64.7%). Chronic GVHD and second malignancies were not major causes of late mortality. A total of 25.5% suffered a late death following autologous HSCT (median follow-up 6.7 years; range: 2.0-22.2 years). Recurrence of the primary malignancy accounted for 87.5% of these deaths. Recurrence of the primary malignancy is the predominant cause of late mortality after HSCT. In contrast to studies of adult patients, non-relapse mortality is less common in children, and death due to chronic GVHD and secondary malignancies is uncommon.


Asunto(s)
Neoplasias Hematológicas/mortalidad , Trasplante de Células Madre Hematopoyéticas/mortalidad , Adolescente , Adulto , Niño , Preescolar , Estudios de Cohortes , Neoplasias Hematológicas/cirugía , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Humanos , Lactante , Recién Nacido , Ontario/epidemiología , Análisis de Supervivencia , Sobrevivientes , Resultado del Tratamiento , Adulto Joven
5.
Ann Oncol ; 24(3): 801-6, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23108950

RESUMEN

BACKGROUND: The objective was to compare 5-year overall survival (OS) between adolescent and young adult (AYA) patients (age 15-19) with acute lymphoblastic leukemia (ALL) treated at a pediatric versus an adult center. PATIENTS AND METHODS: This was a population-based analysis using administrative data of Ontario ALL AYA patients diagnosed between 1986-2009. We calculated predicted survival proportions (PSPs) and 95% confidence intervals (CI). We also surveyed sites to determine whether pediatric or adult-based protocols were used in each period. RESULTS: Overall, 290 patients between 15-19 years of age were diagnosed with ALL during the study period; 144 patients (49.7%) were treated at an adult center. When adjusted for gender, age, income quintile and time period, AYA patients treated at a pediatric center did not have a significantly different PSP (0.65, 95% CI: 0.56-0.75) in comparison to those treated at an adult center (0.62, 95% CI 0.52-0.73; P = 0.87). Most AYA patients treated at adult centers received pediatric protocols in the recent periods. CONCLUSIONS: Using population-based data, AYA ALL patients had similar outcomes whether treated at a pediatric or an adult center. Early introduction of aggressive treatment protocols in adult centers may have negated differences in outcomes among AYA patients by site of care.


Asunto(s)
Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Adolescente , Instituciones Oncológicas , Femenino , Hospitales Pediátricos , Humanos , Estimación de Kaplan-Meier , Masculino , Ontario/epidemiología , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidad , Modelos de Riesgos Proporcionales , Resultado del Tratamiento , Adulto Joven
6.
N Z Med J ; 123(1318): 34-42, 2010 Jul 16.
Artículo en Inglés | MEDLINE | ID: mdl-20651865

RESUMEN

AIM: The Advanced Choice of Employment Scheme (ACE) coordinates the appointment of postgraduate year 1 doctors in New Zealand (NZ). ACE is a voluntary collaborative operation by all 21 of NZ's District Health Boards (DHBs). This audit evaluates the performance of ACE over its first 7 years of operation. METHODS: The proportion of applicants successfully matched and the correlation between their preferred and matched DHBs was evaluated. Qualitative performance was assessed through survey of NZ trainee interns (TIs). RESULTS: Nearly all (99-100%) NZ TIs using ACE have been successfully matched each year. Most (96-99%) of the successful applicants have been matched to one of their top-four preferred DHBs, and a mean of 81% to their most-preferred choice. Qualitative satisfaction with ACE was high (90% good). Applicant concerns included the usability of the online application portal and uncertainty about the fairness of the ACE algorithm. CONCLUSION: The ACE scheme has been highly successful for allocating PGY1 positions over 7 years and achieves generally high applicant satisfaction. DHBs have successfully cooperated despite their competing interest in recruiting top applicants. This study supports the contention that increased collaboration between DHBs may improve efficiency within the NZ health sector.


Asunto(s)
Empleo/tendencias , Internado y Residencia , Selección de Personal/métodos , Médicos/provisión & distribución , Estudios de Seguimiento , Humanos , Nueva Zelanda , Estudios Retrospectivos , Factores de Tiempo
7.
Oncogene ; 28(46): 4041-52, 2009 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-19802002

RESUMEN

Neuregulin-1 (NRG1) is both a candidate oncogene and a candidate tumour suppressor gene. It not only encodes the heregulins and other mitogenic ligands for the ERBB family, but also causes apoptosis in NRG1-expressing cells. We found that most breast cancer cell lines had reduced or undetectable expression of NRG1. This included cell lines that had translocation breaks in the gene. Similarly, expression in cancers was generally comparable to or less than that in various normal breast samples. Many non-expressing cell lines had extensive methylation of the CpG island at the principal transcription start site at exon 2 of NRG1. Expression was reactivated by demethylation. Many tumours also showed methylation, whereas normal mammary epithelial fragments had none. Lower NRG1 expression correlated with higher methylation. Small interfering RNA (siRNA)-mediated depletion of NRG1 increased net proliferation in a normal breast cell line and a breast cancer cell line that expressed NRG1. The short arm of chromosome 8 is frequently lost in epithelial cancers, and NRG1 is the most centromeric gene that is always affected. NRG1 may therefore be the major tumour suppressor gene postulated to be on 8p: it is in the correct location, is antiproliferative and is silenced in many breast cancers.


Asunto(s)
Neoplasias de la Mama/genética , Aberraciones Cromosómicas , Cromosomas Humanos Par 8 , Metilación de ADN , Silenciador del Gen , Genes Supresores de Tumor , Neurregulina-1/genética , Secuencia de Bases , Neoplasias de la Mama/patología , Línea Celular Tumoral , Proliferación Celular , Mapeo Cromosómico , Cromosomas Humanos Par 8/química , Cromosomas Humanos Par 8/genética , Islas de CpG/genética , Femenino , Regulación Neoplásica de la Expresión Génica , Predisposición Genética a la Enfermedad/genética , Humanos , Neurregulina-1/fisiología , Sitio de Iniciación de la Transcripción
8.
Theor Appl Genet ; 114(4): 637-45, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17160671

RESUMEN

Resistance to six known races of black rot in crucifers caused by Xanthomonas campestris pv. campestris (Pammel) Dowson is absent or very rare in Brassica oleracea (C genome). However, race specific and broad-spectrum resistance (to type strains of all six races) does appear to occur frequently in other brassica genomes including B. rapa (A genome). Here, we report the genetics of broad spectrum resistance in the B. rapa Chinese cabbage accession B162, using QTL analysis of resistance to races 1 and 4 of the pathogen. A B. rapa linkage map comprising ten linkage groups (A01-A10) with a total map distance of 664 cM was produced, based on 223 AFLP bands and 23 microsatellites from a F(2) population of 114 plants derived from a cross between the B. rapa susceptible inbred line R-o-18 and B162. Interaction phenotypes of 125 F(2) plants were assessed using two criteria: the percentage of inoculation sites in which symptoms developed, and the severity of symptoms per plant. Resistance to both races was correlated and a cluster of highly significant QTL that explained 24-64% of the phenotypic variance was located on A06. Two additional QTLs for resistance to race 4 were found on A02 and A09. Markers closely linked to these QTL could assist in the transference of the resistance into different B. rapa cultivars or into B. oleracea.


Asunto(s)
Brassica rapa , Mapeo Cromosómico , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Sitios de Carácter Cuantitativo , Xanthomonas campestris , Cruzamientos Genéticos , Escala de Lod , Repeticiones de Microsatélite/genética , Técnicas de Amplificación de Ácido Nucleico , Polimorfismo de Longitud del Fragmento de Restricción
9.
Occup Environ Med ; 63(12): 794-801, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-16644898

RESUMEN

BACKGROUND: The psychological factors of depressive symptoms, fear-avoidance, and self-efficacy are deemed to be important in the work disability process. However, the prognostic value of these factors for time on benefit is not well understood. AIMS: To analyse the prognostic value of psychological factors for the number of days on total compensation benefit over a 12 month period. METHODS: In a longitudinal study of 187 workers receiving total compensation benefits due to musculoskeletal disorders, the prognostic value of psychological factors measured 4-5 weeks post-injury for duration on total compensation benefit over 12 months was analysed. Cox proportional hazard regression analyses were conducted. Special emphasis was given to variable selection and to the analysis of confounding effects of potential prognostic variables. RESULTS: The final model indicated that increased depressive symptoms and poorer physical health significantly increase the number of days on total benefit. Confounders included in the final model were pain and fear of income loss. In the final model the impact of fear-avoidance ceased to be significant when work related variables were included in the fully adjusted model. This illustrates that interrelationships between variables must be taken into account when building multivariate prognostic models. The addition of work related variables to the model did not result in any major changes in the adjusted model, which suggests that when measured 4-5 weeks post-injury, psychological and physical health factors are strong predictors of time on benefits, while work conditions are less important. CONCLUSION: Results suggest that the presence of depressive symptoms and poor physical health in workers on benefit due to musculoskeletal disorders increases the number of days on total compensation benefits significantly, when controlling for confounding variables.


Asunto(s)
Depresión/psicología , Enfermedades Musculoesqueléticas/rehabilitación , Enfermedades Profesionales/rehabilitación , Autoeficacia , Ausencia por Enfermedad/estadística & datos numéricos , Adulto , Mecanismos de Defensa , Miedo , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Enfermedades Musculoesqueléticas/psicología , Enfermedades Profesionales/psicología , Pronóstico , Psicometría , Factores Socioeconómicos , Factores de Tiempo , Indemnización para Trabajadores/estadística & datos numéricos
10.
Oncogene ; 25(41): 5693-706, 2006 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-16636668

RESUMEN

The short arm of chromosome 8, 8p, is often rearranged in carcinomas, typically showing distal loss by unbalanced translocation. We analysed 8p rearrangements in 48 breast, pancreatic and colon cancer cell lines by fluorescence in situ hybridization (FISH) and array comparative genomic hybridization, with a tiling path of 0.2 Mb resolution over 8p12 and 1 Mb resolution over chromosome 8. Selected breast lines (MDA-MB-134, MDA-MB-175, MDA-MB-361, T-47D and ZR-75-1) were analysed further. Most cell lines showed loss of 8p distal to a break that was between 31 Mb (5' to NRG1) and the centromere, but the translocations were accompanied by variable amplifications, deletions and inversions proximal to this break. The 8p12 translocation in T-47D was flanked by an inversion of 4 Mb, with a 100 kb deletion at the proximal end. The dicentric t(8;11) in ZR-75-1 carries multiple rearrangements including interstitial deletions, a triplicated translocation junction between NRG1 and a fragment of 11q (unconnected to CCND1), and two separate amplifications, of FGFR1 and CCND1 . We conclude that if there is a tumour suppressor gene on 8p it may be near 31 Mb, for example WRN; but the complexity of 8p rearrangements suggests that they target various genes proximal to 31 Mb including NRG1 and the amplicon centred around ZNF703/FLJ14299.


Asunto(s)
Neoplasias de la Mama/genética , Aberraciones Cromosómicas , Cromosomas Humanos Par 8 , Neoplasias del Colon/genética , Neoplasias Pancreáticas/genética , Línea Celular Tumoral , Cromosomas Artificiales Bacterianos , Amplificación de Genes , Humanos , Hibridación Fluorescente in Situ , Hibridación de Ácido Nucleico
11.
Biochim Biophys Acta ; 1619(2): 151-8, 2003 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-12527111

RESUMEN

High resolution magic angle spinning (HRMAS) 1H NMR spectroscopy was used to metabolically characterise Ishikawa cells, a human cell line derived from endometrial adenocarcinoma. The spectra obtained had well-resolved resonances from the nucleotide derivatives of uridine and adenosine. Using a combination of diffusion- and relaxation-weighted spectroscopy, the cellular environment of key metabolites previously identified as related to cell growth was also investigated. As Ishikawa cells are hormone-responsive, the metabolic action of tamoxifen, a selective estrogen receptor modulator (SERM), was also investigated. Cells were exposed to 5, 1 and 0.1 microM tamoxifen. Using the statistical regression technique of prediction to latent structures by partial least squares, a predictive model was built modelling the metabolic profile of the cells against exposure to tamoxifen. These spectral changes were characterised by increased resonance intensities from ethanolamine (3.26 ppm), glucose (3.34-3.94 ppm), glutamate (2.14, 2.32 ppm), tyrosine (7.24 ppm), uridine (7.85 ppm) and adenosine (8.20 ppm), and a relative decrease in contributions from myo-inositol resonances (3.30, 3.62, 3.55 ppm). The nucleotide changes suggest that tamoxifen affects RNA transcription, while the changes in ethanolamine and myo-inositol concentrations are indicative of cell membrane turnover.


Asunto(s)
Endometrio/metabolismo , Moduladores de los Receptores de Estrógeno/metabolismo , Espectroscopía de Resonancia Magnética/métodos , Tamoxifeno/metabolismo , Adenocarcinoma , División Celular , Membrana Celular/metabolismo , Relación Dosis-Respuesta a Droga , Neoplasias Endometriales , Femenino , Humanos , Valor Predictivo de las Pruebas , Transcripción Genética , Células Tumorales Cultivadas
12.
Acad Med ; 76(6): 662-4, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11401818

RESUMEN

The term complementary and alternative medicine (CAM) has been adopted to describe a system of health care not generally recognized as part of mainstream medical practice. It is often conflated with an older term, holistic medicine, which can briefly be defined as the art and science of healing the whole person-body, mind, and spirit-in relation to that person's community and environment. Coursework in CAM is now offered in at least two thirds of U.S. medical schools. There is also a growing number of courses in the medical humanities and in spirituality and health. However, courses explicitly designed to introduce students to the principles and practices of holistic medicine are unusual. The author describes the fundamental differences between CAM and holistic medicine, highlighting holistic medicine's emphasis on the promotion of healthy lifestyles for practitioners and patients alike. He argues that offering physicians-to-be more coursework in holistic medicine could lay the groundwork for future physicians' adopting and modeling healthy lifestyles.


Asunto(s)
Terapias Complementarias/educación , Educación Médica , Salud Holística , Médicos , Humanos , Estilo de Vida , Enfermedades Profesionales/prevención & control , Estados Unidos
13.
Yale J Biol Med ; 74(1): 21-7, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11249236

RESUMEN

This paper invites the reader to consider the marriage of art and science as antidote to much epidemic disease, for our greater personal and societal health. The history of arts medicine is reviewed, identifying its persisting although often tenuous link with health care from pre-history to the present. The author describes his personal encounter with art at the bedside, and how it led to his establishing a comprehensive artist-in-residence program at his university hospital. The scientific evidence underscoring the efficacy of art-making for physical and psychological health are outlined, together with the physiological and biochemical data. The author describes his own program, and offers examples of healing art in action.


Asunto(s)
Atención a la Salud , Medicina en las Artes , Poesía como Asunto
14.
Bone Marrow Transplant ; 27(3): 329-32, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11277182

RESUMEN

Management of monoclonal lymphoproliferative disease following stem cell transplantation is difficult and previous attempts to eradicate tumor using chemotherapy or radiation therapy alone have not been successful. We report successful early eradication of an EBV negative, B cell non-Hodgkin's lymphoma in a child who received a T cell-depleted, maternal haploidentical bone marrow transplant for severe combined immunodeficiency disease. Our treatment strategy involved combining conventional induction chemotherapy with re-transplantation using the paternal donor as a source of peripheral blood stem cells, followed by treatment with anti-CD 20 monoclonal antibody (Rituximab). This strategy exploits the potential graft-versus-tumor activity of the mature T cells in the graft, while providing a source of stem cells to confer long-term immune function. The administration of Rituximab in the early post-transplant course may provide additional anti-tumor activity without affecting the new stem cell compartment.


Asunto(s)
Anticuerpos Monoclonales/administración & dosificación , Haplotipos/inmunología , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Trastornos Linfoproliferativos/terapia , Anticuerpos Monoclonales de Origen Murino , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Preescolar , Supervivencia sin Enfermedad , Humanos , Linfoma de Células B/etiología , Linfoma de Células B/terapia , Trastornos Linfoproliferativos/etiología , Complejo Mayor de Histocompatibilidad/genética , Complejo Mayor de Histocompatibilidad/inmunología , Masculino , Inducción de Remisión , Rituximab , Inmunodeficiencia Combinada Grave/complicaciones , Inmunodeficiencia Combinada Grave/terapia
15.
Eur J Cancer ; 36 Suppl 4: S42-3, 2000 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-11056313

RESUMEN

Transforming growth factor beta (TGFbeta) immunoreactivity was determined in endometria from non-drug-therapy and tamoxifen-treated patients. Sections were scored for pathology and quantity image analysis performed to determine levels of glandular- or fibrosis-associated TGFbeta1. Tamoxifen-treated patients displayed greater levels of endometrial dysplasia and glandular hyperplasia, in addition to a statistically significant (P<0.0001) elevation in gland-associated TGFbeta1 protein.


Asunto(s)
Antineoplásicos Hormonales/efectos adversos , Neoplasias Endometriales/inducido químicamente , Tamoxifeno/farmacología , Factor de Crecimiento Transformador beta/metabolismo , Anciano , Neoplasias Endometriales/metabolismo , Endometrio/efectos de los fármacos , Endometrio/patología , Femenino , Humanos , Persona de Mediana Edad , Tamoxifeno/efectos adversos
16.
J Pediatr Psychol ; 25(5): 331-7, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10880063

RESUMEN

OBJECTIVE: To document levels of stress in parents of children undergoing bone marrow transplantation (BMT) over the course of hospitalization and to pilot a psychological intervention program designed to teach parents techniques for managing stress associated with their child's illness and hospitalization. METHODS: Twenty-two mothers of children (ages 2-16) undergoing BMT were followed prospectively from preadmission to three weeks posttransplant. Eleven mothers, randomly assigned to participate in a pilot intervention program, were compared with 11 control mothers receiving standard care preparation of their child's BMT. RESULTS: Repeated measures ANOVAs detected significant changes in stress over time, with most stress reported preadmission. Mothers in the intervention condition reported using more stress management techniques than mothers in the standard care condition, though the majority of analyses revealed no significant differences in stress between groups. CONCLUSIONS: Increased levels of parenting distress may occur pretransplant, suggesting the need for additional psychological intervention at that time.


Asunto(s)
Trasplante de Médula Ósea/psicología , Madres/educación , Madres/psicología , Psicoterapia Breve/métodos , Estrés Psicológico/terapia , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Masculino , Proyectos Piloto , Estudios Prospectivos , Escalas de Valoración Psiquiátrica , Estrés Psicológico/etiología , Resultado del Tratamiento
17.
Neurosci Lett ; 278(3): 125-8, 2000 Jan 14.
Artículo en Inglés | MEDLINE | ID: mdl-10653009

RESUMEN

The signalling molecule ceramide participates in the sphingomyelin pathway and accumulates intracellularly in response to inflammatory mediators. Here we show that membrane permeable C2-ceramide is apoptogenic in the immortalised human oligodendroglial cell line MO3.13. Apoptosis (defined by cell shrinkage and chromatin condensation) is accompanied by caspase enzyme activation. Immunoblotting analysis of extracts from differentiated MO3.13 cells revealed the presence of caspase-3 proenzyme, activation by cleavage of pro-caspase-3 in cells treated with C2-ceramide and cleavage of the caspase substrates fodrin and rabaptin. Lysates also showed cleavage of a fluorogenic peptide substrate. Addition of the general caspase inhibitor BAF markedly attenuated apoptosis of MO3.13 oligodendroglia. A role for caspase-3-like enzymes in ceramide-induced apoptosis of oligodendroglia may have important implications for approaches to treatment of demyelinating diseases.


Asunto(s)
Apoptosis/fisiología , Caspasas/fisiología , Oligodendroglía/efectos de los fármacos , Oligodendroglía/fisiología , Esfingosina/análogos & derivados , Proteínas Portadoras/química , Proteínas Portadoras/metabolismo , Caspasa 3 , Caspasas/metabolismo , Línea Celular Transformada , Activación Enzimática , Inhibidores Enzimáticos/farmacología , Precursores Enzimáticos/química , Precursores Enzimáticos/metabolismo , Humanos , Immunoblotting , Proteínas de Microfilamentos/química , Proteínas de Microfilamentos/metabolismo , Esfingosina/farmacología
18.
Can J Public Health ; 90(4): 233-6, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-10489718

RESUMEN

OBJECTIVE: Weight change between pregnancies was examined to determine if there were an association between weight gain (or loss) and delivery by cesarean section, gestational diabetes or pregnancy-induced hypertension. METHODS: A cohort study was conducted which included Nova Scotia residents with two or more singleton deliveries between 1988 and 1996. Weight change between pregnancies was calculated as the difference in weight from a woman's initial pre-pregnancy weight and the pre-pregnancy weight recorded from her final recorded pregnancy. RESULTS: Weight change between pregnancies was examined in 19,932 women. Women in the highest weight gain category were at an increased risk for developing gestational diabetes (RR = 1.59, 95% CI 1.22-2.08), independent of their weight prior to the final pregnancy, and other confounders. Weight gain (or loss) between pregnancies was not associated with the other outcomes. INTERPRETATION: Weight gain between pregnancy is an independent risk factor for gestational diabetes.


Asunto(s)
Resultado del Embarazo/epidemiología , Aumento de Peso , Pérdida de Peso , Cesárea/estadística & datos numéricos , Estudios de Cohortes , Diabetes Gestacional/epidemiología , Diabetes Gestacional/etiología , Femenino , Humanos , Hipertensión/epidemiología , Hipertensión/etiología , Nueva Escocia/epidemiología , Vigilancia de la Población , Embarazo , Complicaciones Cardiovasculares del Embarazo/epidemiología , Complicaciones Cardiovasculares del Embarazo/etiología , Estudios Retrospectivos , Factores de Riesgo
19.
Bone Marrow Transplant ; 23(9): 929-32, 1999 May.
Artículo en Inglés | MEDLINE | ID: mdl-10338049

RESUMEN

Intravenous immunoglobulin has been used after bone marrow transplants to prevent infections and acute graft-versus-host disease. However, the minimum dose required for protection is unknown. This may have significant economic implications. A multicenter randomized clinical trial compared the impact of two intravenous immunoglobulin doses on systemic infections and acute graft-versus-host disease in transplant recipients. Either 250 mg/kg or 500 mg/kg was given weekly from day -8 to day +111. Multivariate analysis was used to assess the effect of dose and other risk factors on event-free survival, systemic infection, and acute graft-versus-host disease. The two-dose cohorts had similar event-free survival and infection frequencies. The higher dose was associated with less acute graft-versus-host disease (P = 0.03).


Asunto(s)
Trasplante de Médula Ósea/efectos adversos , Enfermedad Injerto contra Huésped/prevención & control , Inmunoglobulinas Intravenosas/administración & dosificación , Virosis/prevención & control , Supervivencia sin Enfermedad , Enfermedad Injerto contra Huésped/etiología , Humanos , Incidencia , Trasplante Homólogo
20.
Epidemiology ; 10(3): 233-7, 1999 May.
Artículo en Inglés | MEDLINE | ID: mdl-10230830

RESUMEN

We conducted a retrospective cohort study to evaluate the relation between the level of total trihalomethanes in drinking water and adverse birth outcomes. The study population comprised women residing in an area with municipal surface water who had a singleton birth in Nova Scotia between January 1, 1988, and December 31, 1995, or a pregnancy termination for a major fetal anomaly. We found little association between trihalomethane level and the outcomes related to fetal weight or gestational age, but we found an elevated relative risk for stillbirths for average trihalomethane levels during pregnancy of 100 microg/liter or greater (adjusted relative risk = 1.66; 95% confidence interval = 1.09-2.52) relative to women exposed to trihalomethane levels of 0-49 microg/liter. We saw little evidence of an elevated prevalence or dose-response pattern for congenital anomalies, with the possible exception of chromosomal abnormalities (adjusted prevalence ratio = 1.38 and 95% confidence interval = 0.73-2.59 for women exposed to trihalomethane levels of 100 microg/liter or greater).


Asunto(s)
Anomalías Inducidas por Medicamentos/etiología , Clorofluorocarburos de Metano/efectos adversos , Aberraciones Cromosómicas/inducido químicamente , Exposición a Riesgos Ambientales/efectos adversos , Muerte Fetal/inducido químicamente , Resultado del Embarazo/epidemiología , Contaminación Química del Agua/efectos adversos , Anomalías Inducidas por Medicamentos/epidemiología , Adulto , Peso al Nacer , Clorofluorocarburos de Metano/análisis , Aberraciones Cromosómicas/epidemiología , Trastornos de los Cromosomas , Relación Dosis-Respuesta a Droga , Exposición a Riesgos Ambientales/análisis , Monitoreo del Ambiente , Monitoreo Epidemiológico , Femenino , Muerte Fetal/epidemiología , Edad Gestacional , Humanos , Recién Nacido , Nueva Escocia/epidemiología , Vigilancia de la Población , Embarazo , Prevalencia , Estudios Retrospectivos , Contaminación Química del Agua/análisis
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