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1.
Lancet ; 402(10409): 1251-1260, 2023 10 07.
Artículo en Inglés | MEDLINE | ID: mdl-37805216

RESUMEN

BACKGROUND: Multicancer early detection (MCED) blood tests can detect a cancer signal from circulating cell-free DNA (cfDNA). PATHFINDER was a prospective cohort study investigating the feasibility of MCED testing for cancer screening. METHODS: In this prospective cohort study done in oncology and primary care outpatient clinics at seven US health networks, a convenience sample of adults aged 50 years or older without signs or symptoms of cancer consented to MCED testing. We collected blood, analysed cfDNA, and returned results to participants' doctors. If a methylation signature indicative of cancer was detected, predicted cancer signal origin(s) informed diagnostic assessment. The primary outcome was time to, and extent of, diagnostic testing required to confirm the presence or absence of cancer. This trial is registered at ClinicalTrials.gov, NCT04241796, and is completed. FINDINGS: Between Dec 12, 2019, and Dec 4, 2020, we recruited 6662 participants. 4204 (63·5%) of 6621 participants with analysable results were women, 2417 (36·5%) were men, and 6071 (91·7%) were White. A cancer signal was detected in 92 (1·4%) of 6621 participants with analysable results. 35 (38%) participants were diagnosed with cancer (true positives) and 57 (62%) had no cancer diagnosis (false positives). Excluding two participants whose diagnostic assessments began before MCED test results were reported, median time to diagnostic resolution was 79 days (IQR 37-219): 57 days (33-143) in true-positive and 162 days (44-248) in false-positive participants. Most participants had both laboratory tests (26 [79%] of 33 with true-positive results and 50 [88%] of 57 with false-positive results) and imaging (30 [91%] of 33 with true-positive results and 53 [93%] of 57 with false-positive results). Fewer procedures were done in participants with false-positive results (17 [30%] of 57) than true-positive results (27 [82%] of 33) and few had surgery (one with a false-positive result and three with a true-positive result). INTERPRETATION: This study supports the feasibility of MCED screening for cancer and underscores the need for further research investigating the test's clinical utility. FUNDING: GRAIL.


Asunto(s)
Ácidos Nucleicos Libres de Células , Neoplasias , Masculino , Humanos , Femenino , Estudios Prospectivos , Detección Precoz del Cáncer , Pruebas Hematológicas , Neoplasias/diagnóstico
2.
BMC Cancer ; 23(1): 33, 2023 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-36624408

RESUMEN

BACKGROUND: Diminished immune defense plays an important role in cancer development. Cancer risk in immunocompromised patients may differ. Identifying individuals with elevated cancer risk can inform strategies for routine cancer screening. This study aimed to understand and compare cancer incidence and risk in three patient groups: recipients of solid organ transplant (SOT) or hematopoietic stem cell transplant (HSCT); diagnosis of primary or secondary immunodeficiency disorder (PID/SID); and recipients of tumor necrosis factor inhibitor (TNF-i) therapy. METHODS: This retrospective cohort study used the University of Utah Health System database and Huntsman Cancer Institute tumor registry. Patients aged ≥18 years with SOT/HSCT, PID/SID or ≥ 3 months of TNF-i therapy were included. The date of transplant, diagnosis of PID/SID, or 1st TNF-i medication order date was defined as the index date. We calculated cumulative cancer incidence by Kaplan-Meier method. A Cox-proportional hazard regression model with a stepwise variable selection process was used to identify independent risk factors associated with the time to onset of a new primary cancer. RESULTS: In total, 13,887 patients were included which comprised of 2982 (21%) SOT/HSCT, 7542 (54%) PID/SID and 3363 (24%) patients receiving TNF-i. The mean (SD) age ranged from 46.8 (15) years - 50.4 (18.2) years. The proportion of white patients ranged from 72.3-84.8%. The estimated cumulative cancer incidence was 11.5% in the SOT/HSCT cohort, 14.3% in the PID/SID cohort, and 8.8% in the TNF-i cohort. The multivariable model adjusted for age, benign in-situ disease, Charlson Comorbidity Index, hypertension/cardiovascular disease/end stage renal disease, gender, race/ethnicity, and renal cyst as significant risk factors. The adjusted hazard ratios for cancer development in SOT/HSCT and PID/SID cohorts compared to the TNF-i cohort over the full follow-up period were 1.57 (95% CI: 1.16-2.13) and 2.14 (95% CI: 1.65-2.77), respectively. CONCLUSION: A significantly increased risk of cancer was observed in PID/SID patients and SOT/HSCT patients compared to TNF-i patients. Age ≥ 50 years, male gender, and clinical comorbidities were additional factors impacting cancer risk. PID/SID and SOT/HSCT patients may benefit from more intensive cancer screening.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Huésped Inmunocomprometido , Neoplasias , Trasplante de Órganos , Adulto , Humanos , Masculino , Persona de Mediana Edad , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Incidencia , Trasplante de Órganos/efectos adversos , Estudios Retrospectivos , Receptores de Trasplantes , Femenino , Anciano , Neoplasias/epidemiología , Comorbilidad
3.
Cleft Palate Craniofac J ; 60(12): 1600-1608, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-35786020

RESUMEN

OBJECTIVE: The objective of this paper is to conduct a systematic review that summarizes the cost-effectiveness of cleft lip and/or palate (CL/P) care in low- and middle-income countries (LMICs) based on existing literature. DESIGN: We searched eleven electronic databases for articles from January 1, 2000 to December 29, 2020. This study is registered in PROSPERO (CRD42020148402). Two reviewers independently conducted primary and secondary screening, and data extraction. SETTING: All CL/P cost-effectiveness analyses in LMIC settings. PATIENTS, PARTICIPANTS: In total, 2883 citations were screened. Eleven articles encompassing 1,001,675 patients from 86 LMICs were included. MAIN OUTCOME MEASURES: We used cost-effectiveness thresholds of 1% to 51% of a country's gross domestic product per capita (GDP/capita), a conservative threshold recommended for LMICs. Quality appraisal was conducted using the Joanna Briggs Institute (JBI) checklist. RESULTS: Primary CL/P repair was cost-effective at the threshold of 51% of a country's GDP/capita across all studies. However, only 1 study met at least 70% of the JBI criteria. There is a need for context-specific cost and health outcome data for primary CL/P repair, complications, and existing multidisciplinary management in LMICs. CONCLUSIONS: Existing economic evaluations suggest primary CL/P repair is cost-effective, however context-specific local data will make future cost-effectiveness analyses more relevant to local decision-makers and lead to better-informed resource allocation decisions in LMICs.


Asunto(s)
Labio Leporino , Fisura del Paladar , Humanos , Países en Desarrollo , Análisis Costo-Beneficio , Labio Leporino/terapia , Fisura del Paladar/terapia , Análisis de Costo-Efectividad
4.
Pract Neurol ; 23(6): 512-515, 2023 Nov 23.
Artículo en Inglés | MEDLINE | ID: mdl-37802650

RESUMEN

A 21-year-old woman with multiple sclerosis (taking regular fingolimod) developed sudden-onset severe headache with nausea and malaise. Neurological examination was normal and she was afebrile. Blood results showed lymphocytes 0.53 x 109/L and C reactive protein 19 mg/L. CT scan of head and venogram were normal. CSF showed an opening pressure of 33 cm H2O and an incidental light growth of Cryptococcus neoformans, confirmed with positive India Ink stain and a positive cryptococcal antigen (1:100). She was treated for cryptococcal meningoencephalitis with amphotericin and flucytosine. Her presenting symptoms had closely mimicked subarachnoid haemorrhage. This atypical presentation of cryptococcal CNS infection highlights the need for vigilance in immunosuppressed patients.


Asunto(s)
Meningitis Criptocócica , Meningoencefalitis , Esclerosis Múltiple , Femenino , Humanos , Adulto Joven , Adulto , Meningitis Criptocócica/tratamiento farmacológico , Clorhidrato de Fingolimod/efectos adversos , Anfotericina B , Meningoencefalitis/tratamiento farmacológico
5.
BMC Cancer ; 22(1): 223, 2022 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-35232405

RESUMEN

BACKGROUND: Multi-cancer early detection tests have been developed to enable earlier detection of multiple cancer types through screening. As reflected by patient-reported outcomes (PROs), the psychosocial impact of cancer screening is not yet clear. Our aim is to evaluate the impact of cancer screening through PRO assessment. METHODS: A systematic review was conducted using MEDLINE, EMBASE, and reference lists of articles from January 2000 to August 2020 for relevant publications assessing the psychosocial impact of cancer screening before and within 1 year after screening in the general asymptomatic population, including following receipt of results. Studies focused on diagnostic evaluation or involving patients previously diagnosed with cancer were excluded. RESULTS: In total, 31 studies (12 randomized controlled trials; 19 observational studies) were included, reflecting PRO assessments associated with lung, breast, colorectal, anal, ovarian, cervical, and prostate cancer screening procedures. The most commonly assessed construct was symptoms of anxiety, using the State-Trait Anxiety Inventory. Cancer-specific distress and worry were also assessed using a broad range of measures. Overall, individuals tolerated screening procedures well with no major psychosocial effects. Of note, increases in symptoms of anxiety and levels of distress and worry were generally found prior to communication of screening results and following communication of indeterminate or positive results that required further testing. These negative psychosocial effects were, however, not long-lasting and returned to baseline relatively soon after screening. Furthermore, individuals with higher cancer risk, such as current smokers and those with a family history of cancer, tended to have higher levels of anxiety and distress throughout the screening process, including following negative or indeterminate results. CONCLUSIONS: The psychosocial impact of cancer screening is relatively low overall and short-lived, even following false-positive test results. Individuals with a higher risk of cancer tend to experience more symptoms of anxiety and distress during the screening process; thus, more attention to this group is recommended.


Asunto(s)
Ansiedad/epidemiología , Depresión/epidemiología , Detección Precoz del Cáncer/psicología , Neoplasias/diagnóstico , Estrés Psicológico/epidemiología , Adulto , Anciano , Ansiedad/etiología , Depresión/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Observacionales como Asunto , Medición de Resultados Informados por el Paciente , Ensayos Clínicos Controlados Aleatorios como Asunto , Estrés Psicológico/etiología
6.
Alcohol Clin Exp Res ; 46(6): 1036-1049, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35474222

RESUMEN

BACKGROUND: Prenatal alcohol exposure (PAE) has been shown to alter fetal blood flow in utero and is also associated with placental insufficiency and intrauterine growth restriction (IUGR), suggesting an underlying connection between perturbed circulation and pregnancy outcomes. METHODS: Timed-pregnant C57/BL6NHsd mice, bred in-house, were exposed by gavage on gestational day 10 (GD10) to ethanol (3 g/kg) or purified water, as a control. Pulse-wave Doppler ultrasound measurements for umbilical arteries and ascending aorta were obtained post-gavage (GD12, GD14, GD18) on 2 fetuses/litter. RNA from the non-decidual (labyrinthine and junctional zone) portion of placentas was isolated and processed for RNA-seq and subsequent bioinformatic analyses, and the association between transcriptomic changes and fetal phenotypes assessed. RESULTS: Exposure to ethanol in pregnant mice on GD10 attenuates umbilical cord blood flow transiently during gestation, and is associated with indices of IUGR, specifically decreased fetal weight and morphometric indices of cranial growth. Moreover, RNA-seq of the fetal portion of the placenta demonstrated that this single exposure has lasting transcriptomic changes, including upregulation of Tet3, which is associated with spontaneous abortion. Weighted gene co-expression network analysis (WGCNA) identified erythrocyte differentiation and homeostasis as important pathways associated with improved umbilical cord blood flow as gestation progresses. WGCNA also identified sensory perception of chemical stimulus/odorant and receptor activity as important pathways associated with cranial growth. CONCLUSION: Our data suggest that PAE perturbs the expression of placental genes relevant for placental hematopoiesis and environmental sensing, resulting in transient impairment of umbilical cord blood flow and, subsequently, IUGR.


Asunto(s)
Placenta , Efectos Tardíos de la Exposición Prenatal , Animales , Etanol/efectos adversos , Etanol/metabolismo , Femenino , Sangre Fetal/metabolismo , Retardo del Crecimiento Fetal/inducido químicamente , Humanos , Ratones , Placenta/metabolismo , Embarazo , Resultado del Embarazo , Efectos Tardíos de la Exposición Prenatal/metabolismo , Transcriptoma
7.
Brain ; 144(5): 1384-1395, 2021 06 22.
Artículo en Inglés | MEDLINE | ID: mdl-33880511

RESUMEN

Many studies report an overlap of MRI and clinical findings between patients with relapsing-remitting multiple sclerosis (RRMS) and secondary progressive multiple sclerosis (SPMS), which in part is reflective of inclusion of subjects with variable disease duration and short periods of follow-up. To overcome these limitations, we examined the differences between RRMS and SPMS and the relationship between MRI measures and clinical outcomes 30 years after first presentation with clinically isolated syndrome suggestive of multiple sclerosis. Sixty-three patients were studied 30 years after their initial presentation with a clinically isolated syndrome; only 14% received a disease modifying treatment at any time point. Twenty-seven patients developed RRMS, 15 SPMS and 21 experienced no further neurological events; these groups were comparable in terms of age and disease duration. Clinical assessment included the Expanded Disability Status Scale, 9-Hole Peg Test and Timed 25-Foot Walk and the Brief International Cognitive Assessment For Multiple Sclerosis. All subjects underwent a comprehensive MRI protocol at 3 T measuring brain white and grey matter (lesions, volumes and magnetization transfer ratio) and cervical cord involvement. Linear regression models were used to estimate age- and gender-adjusted group differences between clinical phenotypes after 30 years, and stepwise selection to determine associations between a large sets of MRI predictor variables and physical and cognitive outcome measures. At the 30-year follow-up, the greatest differences in MRI measures between SPMS and RRMS were the number of cortical lesions, which were higher in SPMS (the presence of cortical lesions had 100% sensitivity and 88% specificity), and grey matter volume, which was lower in SPMS. Across all subjects, cortical lesions, grey matter volume and cervical cord volume explained 60% of the variance of the Expanded Disability Status Scale; cortical lesions alone explained 43%. Grey matter volume, cortical lesions and gender explained 43% of the variance of Timed 25-Foot Walk. Reduced cortical magnetization transfer ratios emerged as the only significant explanatory variable for the symbol digit modality test and explained 52% of its variance. Cortical involvement, both in terms of lesions and atrophy, appears to be the main correlate of progressive disease and disability in a cohort of individuals with very long follow-up and homogeneous disease duration, indicating that this should be the target of therapeutic interventions.


Asunto(s)
Encéfalo/patología , Progresión de la Enfermedad , Esclerosis Múltiple Crónica Progresiva/patología , Esclerosis Múltiple Recurrente-Remitente/patología , Anciano , Enfermedades Desmielinizantes/patología , Evaluación de la Discapacidad , Femenino , Humanos , Estudios Longitudinales , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad
8.
BMC Health Serv Res ; 22(1): 1155, 2022 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-36096813

RESUMEN

BACKGROUND: Cancer represents a significant source of disease burden in the United States (US), both clinically and economically. Diagnosis and treatment of cancer at earlier stages may reduce this burden. To better understand potential impacts of earlier diagnosis, healthcare costs among patients with cancer were assessed by cancer type and stage at diagnosis. METHODS: A retrospective analysis was conducted using Optum's de-identified Integrated Claims-Clinical data set with Enriched Oncology, which includes data from Medicare Advantage and commercially insured members. Adult members newly diagnosed with solid tumor cancers, cancer stage at diagnosis (diagnosed 1/1/2016-6/30/2020), and continuous enrollment for at least one month post diagnosis were identified. Patients with breast, cervical, colorectal, lung, ovarian, or prostate cancer were reported. Mean standardized costs (2020 USD) were calculated in each month on an annual and cumulative basis through four years post-cancer diagnosis. In each month, costs were calculated for those with continuous enrollment and no death reported in the month. Mean annual cost per patient was estimated by summing month one to 12 mean costs and stratifying by stage at cancer diagnosis; annual year one to four costs were summed to determine cumulative costs. RESULTS: Among members diagnosed 2016-2020 with breast, cervical, colorectal, lung, ovarian, or prostate cancer, 20,422 eligible members were identified. Mean costs increased by stage of diagnosis across all cancers at the annual and cumulative level through year four post diagnosis. Cumulative mean costs grew over time at a relatively similar rate across stages I to III and more dramatically in stage IV, except for cervical and lung cancer where the rate was relatively stable or slightly fluctuated across stages and ovarian cancer where stages III and IV both increased more sharply compared to stages I and II. CONCLUSIONS: Mean annual and cumulative healthcare costs through year four post cancer diagnosis were significantly higher among those diagnosed at later versus earlier cancer stages. The steeper increase in cumulative costs among those diagnosed in stage IV for many cancer types highlights the importance of earlier cancer diagnosis. Earlier cancer diagnosis may enable more efficient treatment, improve patient outcomes and reduce healthcare costs.


Asunto(s)
Neoplasias Colorrectales , Neoplasias Ováricas , Neoplasias de la Próstata , Adulto , Anciano , Femenino , Costos de la Atención en Salud , Humanos , Masculino , Medicare , Estudios Retrospectivos , Estados Unidos/epidemiología
9.
Br J Cancer ; 125(10): 1432-1442, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34426664

RESUMEN

BACKGROUND: Multi-cancer early detection (MCED) next-generation-sequencing blood tests represent a potential paradigm shift in screening. METHODS: We estimated the impact of screening in the US and UK. We used country-specific parameters for uptake, and test-specific sensitivity and false-positive rates for current screening: breast, colorectal, cervical and lung (US only) cancers. For the MCED test, we used cancer-specific sensitivities by stage. Outcomes included the true-positive:false-positive (TP:FP) ratio; and the cost of diagnostic investigations among screen positives, per cancer detected (Diagcost). Outcomes were estimated for recommended screening only, and then when giving the MCED test to anyone without cancer detected by current screening plus similarly aged adults ineligible for recommended screening. RESULTS: In the US, current screening detects an estimated 189,498 breast, cervical, colorectal and lung cancers. An MCED test with 25-100% uptake detects an additional 105,526-422,105 cancers (multiple types). The estimated TP:FP (Diagcost) was 1.43 ($89,042) with current screening but only 1:1.8 ($7060) using an MCED test. For the UK the corresponding estimates were 1:18 (£10,452) for current screening, and 1:1.6 (£2175) using an MCED test. CONCLUSIONS: Adding an MCED blood test to recommended screening can potentially be an efficient strategy. Ongoing randomised studies are required for full efficacy and cost-effectiveness evaluations.


Asunto(s)
ADN de Neoplasias/genética , Detección Precoz del Cáncer/métodos , Neoplasias/sangre , Neoplasias/diagnóstico , Anciano , Detección Precoz del Cáncer/economía , Humanos , Persona de Mediana Edad , Neoplasias/genética , Salud Poblacional , Guías de Práctica Clínica como Asunto , Sensibilidad y Especificidad , Reino Unido , Estados Unidos
10.
Ann Neurol ; 87(1): 63-74, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31693200

RESUMEN

OBJECTIVE: Clinical outcomes in multiple sclerosis (MS) are highly variable. We aim to determine the long-term clinical outcomes in MS, and to identify early prognostic features of these outcomes. METHODS: One hundred thirty-two people presenting with a clinically isolated syndrome were prospectively recruited between 1984 and 1987, and followed up clinically and radiologically 1, 5, 10, 14, 20, and now 30 years later. All available notes and magnetic resonance imaging scans were reviewed, and MS was defined according to the 2010 McDonald criteria. RESULTS: Clinical outcome data were obtained in 120 participants at 30 years. Eighty were known to have developed MS by 30 years. Expanded Disability Status Scale (EDSS) scores were available in 107 participants, of whom 77 had MS; 32 (42%) remained fully ambulatory (EDSS scores ≤3.5), all of whom had relapsing-remitting MS (RRMS), 3 (4%) had RRMS and EDSS scores >3.5, 26 (34%) had secondary progressive MS (all had EDSS scores >3.5), and MS contributed to death in 16 (20%). Of those with MS, 11 received disease-modifying therapy. The strongest early predictors (within 5 years of presentation) of secondary progressive MS at 30 years were presence of baseline infratentorial lesions and deep white matter lesions at 1 year. INTERPRETATION: Thirty years after onset, in a largely untreated cohort, there was a divergence of MS outcomes; some people accrued substantial disability early on, whereas others ran a more favorable long-term course. These outcomes could, in part, be predicted by radiological findings from within 1 year of first presentation. ANN NEUROL 2020;87:63-74.


Asunto(s)
Enfermedades Desmielinizantes/epidemiología , Esclerosis Múltiple/epidemiología , Esclerosis Múltiple/patología , Adulto , Encéfalo/patología , Comorbilidad , Evaluación de la Discapacidad , Femenino , Estudios de Seguimiento , Humanos , Imagen por Resonancia Magnética , Masculino , Esclerosis Múltiple/diagnóstico , Neuroimagen , Valor Predictivo de las Pruebas , Pronóstico , Factores de Tiempo , Reino Unido/epidemiología , Adulto Joven
11.
Artículo en Inglés | MEDLINE | ID: mdl-33785581

RESUMEN

OBJECTIVE: To determine 30-year brain atrophy rates following clinically isolated syndromes and the relationship of atrophy in the first 5 years and clinical outcomes 25 years later. METHODS: A cohort of 132 people who presented with a clinically isolated syndrome suggestive of multiple sclerosis (MS) were recruited between 1984-1987. Clinical and MRI data were collected prospectively over 30 years. Widths of the third ventricle and the medulla oblongata were used as linear atrophy measures. RESULTS: At 30 years, 27 participants remained classified as having had a clinically isolated syndrome, 34 converted to relapsing remitting MS, 26 to secondary progressive MS and 16 had died due to MS. The mean age at baseline was 31.7 years (SD 7.5) and the mean disease duration was 30.8 years (SD 0.9). Change in medullary and third ventricular width within the first 5 years, allowing for white matter lesion accrual and Expanded Disability Status Scale increases over the same period, predicted clinical outcome measures at 30 years. 1 mm of medullary atrophy within the first 5 years increased the risk for secondary progressive MS or MS related death by 30 years by 583% (OR 5.83, 95% CI 1.74 to 19.61, p<0.005), using logistic regression. CONCLUSIONS: Our findings show that brain regional atrophy within 5 years of a clinically isolated syndrome predicts progressive MS or a related death, and disability 25 years later.

12.
Mult Scler ; 27(6): 968-972, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-32757905

RESUMEN

BACKGROUND: Differentiating multiple sclerosis (MS) from vascular risk factor (VRF)-small vessel disease (SVD) can be challenging. OBJECTIVE AND METHODS: In order to determine whether or not pontine lesion location is a useful discriminator of MS and VRF-SVD, we classified pontine lesions on brain magnetic resonance imaging (MRI) as central or peripheral in 93 MS cases without VRF, 108 MS patients with VRF and 43 non-MS cases with VRF. RESULTS: MS without VRF were more likely to have peripheral pons lesions (31.2%, 29/93) than non-MS with VRF (0%, 0/43) (Exp(B) = 29.8; 95% confidence interval (CI) = (1.98, 448.3); p = 0.014) but there were no significant differences regarding central pons lesions between MS without VRF (5.4%, 5/93) and non-MS with VRF patients (16.3%, 7/43) (Exp(B) = 0.89; 95% CI = (0.2, 3.94); p = 0.87). The presence of peripheral pons lesions discriminated between MS and VRF-SVD with 100% (95% CI = (91.8, 100)) specificity. The proportion of peripheral pons lesions in MS with VRF (30.5%, 33/108) was similar to that seen in MS without VRF (31.2%, 29/93, p = 0.99). Central lesions occurred in similar frequency in MS with VRF (8.3%, 9/108) and non-MS with VRF (16.3%, 7/43, p = 0.15). CONCLUSION: Peripheral pons lesion location is a good discriminator of MS from vascular lesions.


Asunto(s)
Esclerosis Múltiple , Encéfalo , Humanos , Imagen por Resonancia Magnética , Esclerosis Múltiple/diagnóstico por imagen , Puente/diagnóstico por imagen , Factores de Riesgo
13.
J Neurol Neurosurg Psychiatry ; 91(4): 388-391, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-32034114

RESUMEN

OBJECTIVE: To determine if vascular risk factor (VRF), that is, smoking, arterial hypertension (HT), dyslipidaemia and diabetes, have an effect on multiple sclerosis (MS) pathology as measured by MS typical brain lesions, we have compared brain MRIs from patients with MS with and without VRF age-matched and sex-matched. METHODS: Brain MRIs from five centres were scored for the presence of Dawson's fingers (DF) and juxtacortical lesions (JCL). A regression model was built to predict the effect of each individual VRF on DF and JCL, considering age and disease duration. RESULTS: 92 MS cases without VRF and 106 MS with one or more VRF (80 ever-smokers, 43 hypertensives, 25 dyslipidaemics and 10 diabetics) were included. Ever-smoking associated with a higher burden of DF (Exp(B)=1.29, 95% CI 1.10 to 1.51, p<0.01) and JCL (Exp(B)=1.38, 95% CI 1.21 to 1.57, p<0.01). No other VRF had an impact on DF. Dyslipidaemia associated with increased JCL (Exp(B)=1.30, 95% CI 1.10 to 1.56, p<0.01) but HT did not associate with any of the outcomes. CONCLUSIONS: Individual VRF appear to affect MS-specific lesions differently. An increase in MS lesions was mainly seen in smokers; however, this VRF is most likely to be present from onset of MS, and other VRF effects may be partly mitigated by treatment. Our findings support that treating VRF and cessation of smoking may be important in the management of MS.


Asunto(s)
Encéfalo/patología , Esclerosis Múltiple/patología , Sustancia Blanca/patología , Adulto , Encéfalo/diagnóstico por imagen , Estudios de Casos y Controles , Femenino , Humanos , Hipertensión/diagnóstico por imagen , Hipertensión/patología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Esclerosis Múltiple/diagnóstico por imagen , Estudios Retrospectivos , Factores de Riesgo , Fumar , Sustancia Blanca/diagnóstico por imagen
14.
Neuroimage ; 165: 238-250, 2018 01 15.
Artículo en Inglés | MEDLINE | ID: mdl-29017867

RESUMEN

Hospitals often hold historical MR image data printed on films without being able to make it accessible to modern image processing techniques. Having the possibility to recover geometrically consistent, volumetric images from scans acquired decades ago will enable more comprehensive, longitudinal studies to understand disease progressions. In this paper, we propose a consistent framework to reconstruct a volumetric representation from printed films holding thick single-slice brain MR image acquisitions dating back to the 1980's. We introduce a flexible framework based on semi-automatic slice extraction, followed by automated slice-to-volume registration with inter-slice transformation regularisation and slice intensity correction. Our algorithm is robust against numerous detrimental effects being present in archaic films. A subsequent, isotropic total variation deconvolution technique revitalises the visual appearance of the obtained volumes. We assess the accuracy and perform the validation of our reconstruction framework on a uniquely long-term MRI dataset where a ground-truth is available. This method will be used to facilitate a robust longitudinal analysis spanning 30 years of MRI scans.


Asunto(s)
Algoritmos , Encéfalo/diagnóstico por imagen , Interpretación de Imagen Asistida por Computador/métodos , Imagenología Tridimensional/métodos , Neuroimagen/métodos , Conjuntos de Datos como Asunto , Humanos , Aumento de la Imagen/métodos , Estudios Longitudinales , Imagen por Resonancia Magnética , Película para Rayos X
15.
J Craniofac Surg ; 29(4): 937-942, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29485559

RESUMEN

BACKGROUND: There is an emerging interest in global surgery. The Lancet Commission on Global Surgery recognizes the important role that nongovernmental organizations (NGOs) play in the delivery of cleft lip and/or palate (CLP) surgical care. To better address the unmet burden of surgical disease, the commissioners propose the use of a centralized registry to maximize coordination of global surgical volunteerism efforts. This study aims to create a comprehensive database of CLP organizations. METHODS: A systematic search of the following resources was conducted: The Plastic Surgery Foundation, Smile Train, Wikipedia, Google, and lists of surgical NGOs. A secondary review of each organization's website was performed to verify inclusion criteria and to extract data. Organizations were classified as providing surgical or nonsurgical care. RESULTS: Thirty-one organizations providing CLP care were reviewed, with 30 that met inclusion criteria. Of the 20 surgical NGOs, 50% use a diagonal approach of international outreach, 40% a vertical one-way approach, and 10% a horizontal approach. All 10 of the nonsurgical NGOs provide care through a horizontal approach. Their offices are distributed across North America (43%), Asia (27%), Europe (23%), and Australia (7%). Forty-three percent of the organizations provide CLP surgeries or services in more than 1 country; 93% do so with a multidisciplinary team. A majority of the organizations established collaborations with host institutions (80%). CONCLUSION: To the authors' best knowledge, this database includes the largest collection of CLP organizations. This list will be made publicly available to inform surgical care planning, facilitate collaboration, and promote further research.


Asunto(s)
Organizaciones de Beneficencia/organización & administración , Labio Leporino/cirugía , Fisura del Paladar/cirugía , Bases de Datos Factuales , Cirugía Plástica/organización & administración , Humanos , Procedimientos de Cirugía Plástica
17.
Qual Life Res ; 26(7): 1785-1798, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28341926

RESUMEN

PURPOSE: Despite benefits of antiretroviral therapies (ART), people with HIV infection have increased risk of cardiovascular disease, kidney disease, and low bone mineral density. Some ARTs increase risk of these events. The purpose of this study was to examine patients' perspectives of these risks and estimate health state utilities associated with these risks for use in cost-utility models. METHODS: Qualitative thematic analysis was conducted to examine messages posted to the POZ/AIDSmeds Internet community forums, focusing on bone, kidney, and cardiovascular side effects and risks of HIV/AIDS medications. Then, health state vignettes were drafted based on this qualitative analysis, literature review, and clinician interviews. The health states (representing HIV, plus treatment-related risks) were valued in time trade-off interviews with general population participants in the UK. RESULTS: Qualitative analysis of the Internet forums documented patient concerns about ART risks, as well as treatment decisions made because of these risks. A total of 208 participants completed utility interviews (51.4% female; mean age 44.6 years). The mean utility of the HIV health state (virologically suppressed, treated with ART) was 0.86. Adding a description of risk resulted in statistically significant disutility (i.e., utility decreases): renal risk (disutility = -0.02), bone risk (-0.03), and myocardial infarction risk (-0.05). CONCLUSIONS: Patient concerns and treatment decisions were documented via qualitative analysis of Internet forum discussions, and the impact of these concerns was quantified in terms of health state utilities. The resulting disutilities may be useful for differentiating among ARTs in economic modeling of treatment for patients with HIV.


Asunto(s)
Antirretrovirales/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Perfil de Impacto de Enfermedad , Medios de Comunicación Sociales/estadística & datos numéricos , Adulto , Femenino , Humanos , Masculino , Proyectos Piloto , Riesgo
18.
Ann Plast Surg ; 78(2): 162-170, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28079698

RESUMEN

PURPOSE: There is emerging interest in hand surgery and global health. This was emphasized at the 2015 presidential address at the American Society for Surgery of Hand. Children are prioritized because of their increased risk for trauma and higher potential for better outcomes. This study aims to identify how hand surgical volunteer programs can benefit the pediatric hand surgical landscape in global health. There has been no literature review to date. METHODS: This institutional review board-approved review systematically searched PubMed, Embase, Medline, African Journal Online, and the Journal of Hand Surgery. A scoping review methodology was selected to allow mapping of a body of literature by topic, include a greater range of study designs, and provide a descriptive overview of the reviewed material. All studies published between 2000 to March 2016 relevant to pediatric hand surgery in global health were included. Preferred Reporting Items for Systematic Reviews and Meta-Analyses was used to record the search results. RESULTS: Six hundred sixty-eight citations were reviewed, with 10 studies that satisfied the inclusion criteria. Hand trauma (70%), congenital anomalies (30%), tumors (20%), surgical technique (50%), and international outreach recommendation (30%) were common themes. Targeting prevention (50%), international outreach education (30%), and building on previous studies to validate findings study (10%) were identified as gaps.


Asunto(s)
Salud Global , Mano/cirugía , Cooperación Internacional , Procedimientos de Cirugía Plástica , Cirugía Plástica/organización & administración , Niño , Humanos , Evaluación de Necesidades
19.
J Hand Surg Am ; 42(8): 652-655, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28648326

RESUMEN

Internationally, surgery is making its mark as a necessary priority in Low and Middle Income Countries (LMICs). In 2013, Paul Farmer, MD, and international leaders from 14 countries founded the Lancet Commission of Global Surgery to develop and assemble the best evidence on the state of surgery worldwide, to study the economics of surgical and anesthesia care delivery, and to develop strategies for improving access. Concurrently, there is growing interest in hand surgery. The Journal of Hand Surgery (European Volume) recently called for LMIC research with the goal of using their resources to improve the end product. International outreach was further prioritized at the American Society for Surgery of the Hand, with Scott Kozin, MD, and colleagues subsequently launching the Touching Hands Program (THP). Insight into current models, proven benefits, emphasis on quality, and research in international hand surgery will help invested volunteers provide high-quality, safe, and innovative solutions in the global hand surgery landscape.


Asunto(s)
Atención a la Salud , Mano/cirugía , Cooperación Internacional , Especialidades Quirúrgicas , Humanos
20.
Acta Oncol ; 53(9): 1173-9, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24834795

RESUMEN

BACKGROUND: Giant cell tumor of bone (GCTB) is an aggressive primary osteolytic tumor. GCTB often involves the epiphysis, usually causing substantial pain and functional disability. Denosumab, a fully human monoclonal antibody against receptor activator of nuclear factor κΒ ligand (RANKL), is an effective treatment option for patients with advanced GCTB. This analysis of data from an ongoing, open-label study describes denosumab's effects on pain and analgesic use in patients with GCTB. MATERIAL AND METHODS: Patients with unresectable disease (e.g. sacral or spinal GCTB, or multiple lesions including pulmonary metastases) were enrolled into Cohort 1 (N = 170), and patients with resectable disease whose planned surgery was associated with severe morbidity (e.g. joint resection, limb amputation, or hemipelvectomy) were enrolled into Cohort 2 (N = 101). Patients received denosumab (120 mg) subcutaneously every four weeks, with additional doses on study days 8 and 15. Patients assessed worst pain severity with the Brief Pain Inventory - Short Form (BPI-SF) at baseline, at each visit for the first six months, and every three months thereafter. RESULTS: Clinically relevant pain improvement was reported by 29% of patients in Cohort 1 and 35% in Cohort 2 during week 1 and by ≥ 50% of patients in each cohort at each study visit from months 2-30. Median time to clinically relevant improvement was 30 (95% CI 16, 57) days in Cohort 1 and 15 (95% CI 15, 29) days in Cohort 2. Results in patients with moderate/severe pain at baseline were similar. Fewer than 30% of patients in Cohort 1 and 10% in Cohort 2 experienced clinically relevant pain worsening at any visit through 27 months. Most patients had no/low analgesic use during the study. CONCLUSION: Most patients treated with denosumab experienced clinically relevant decreases in pain within two months.


Asunto(s)
Anticuerpos Monoclonales Humanizados/uso terapéutico , Neoplasias Óseas/complicaciones , Tumor Óseo de Células Gigantes/complicaciones , Dolor/tratamiento farmacológico , Ligando RANK/antagonistas & inhibidores , Adolescente , Adulto , Estudios de Cohortes , Denosumab , Esquema de Medicación , Femenino , Humanos , Inyecciones Subcutáneas , Masculino , Dimensión del Dolor/métodos , Factores de Tiempo , Resultado del Tratamiento
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