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1.
Colorectal Dis ; 26(3): 527-533, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38247259

RESUMEN

AIM: The aim was to estimate the 10-year cost-utility of haemorrhoidectomy surgery with preference-based measures of health using Canadian health utility measures and costs. METHODS: Patients undergoing elective haemorrhoidectomies by general and colorectal surgeons in British Columbia, Vancouver, between September 2015 and November 2022, completed preoperatively and postoperatively the EuroQol five-dimension five-level health-related quality of life questionnaire (EQ-5D-5L). Quality-adjusted life years (QALYs) attributable to surgery were calculated by discounting preoperative and postoperative health utility values derived from the EQ-5D-5L. Costs were measured from a health system perspective which incorporated costs of hospital stay and specialists' fees. Results are presented in 2021 Canadian dollars. RESULTS: Of 94 (47%) patients who completed both the preoperative and postoperative questionnaires, the mean gain in QALYs 10 years after surgery was 1.0609, assuming a 3.5% annual discounting rate. The average cost of the surgery was $3166. The average cost per QALY was $2985 when benefits of the surgery were assumed to accrue for 10 years. The cost per QALY was higher for women ($3821) compared with men ($2485). Participants over the age of 70 had the highest cost per QALY ($8079/QALY). CONCLUSIONS: Haemorrhoidectomies have been associated with significant gains in health status and are inexpensive relative to the associated gains in quality of life based on patients' perspectives of their improvement in health and well-being.


Asunto(s)
Hemorreoidectomía , Calidad de Vida , Masculino , Humanos , Femenino , Canadá , Análisis Costo-Beneficio , Estado de Salud , Años de Vida Ajustados por Calidad de Vida
2.
Public Health Action ; 13(4): 130-135, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38077726

RESUMEN

OBJECTIVE: To determine the social impact of adult TB on child household contacts living in the Greater Banjul Area, The Gambia. METHODS: This was a prospective observational cohort study among adults (≥18 years) starting treatment for drug-susceptible pulmonary TB between June 2019 and July 2021 who reported having at least one child household contact. We collected data from 51 adults and 180 child contacts at the start of TB treatment (baseline) and again at 6 months of treatment. Participants were asked about expenses for school fees, healthcare, festivities and food security of child contacts. RESULTS: While school attendance of the child contacts remained largely unaffected, there was a significant drop in school performance at 6 months (P < 0.001). Furthermore, child contacts faced significant food insecurity in terms of food quantity and variety available, with up to a four-fold increase in some instances at 6 months compared to baseline (P < 0.001). CONCLUSION: Child contacts face a potential decline in school performance and risk of food insecurity. While a plethora of work is being undertaken to alleviate costs of care for TB patients, further emphasis is needed to ensure educational and social prosperity for child contacts, as adults with TB have socio-economic implications for the wider household.


OBJECTIF: Déterminer l'impact social de la TB de l'adulte sur les contacts familiaux de l'enfant vivant dans la région du Grand Banjul, en Gambie. MÉTHODES: Il s'agissait d'une étude de cohorte observationnelle prospective auprès d'adultes (≥18 ans) commençant un traitement contre la TB pulmonaire sensible aux médicaments entre juin 2019 et juillet 2021 et qui ont déclaré avoir au moins un contact domestique avec un enfant. Nous avons recueilli des données auprès de 51 adultes et 180 enfants contacts au début du traitement contre la TB, puis à nouveau après 6 mois de traitement. Les participants ont été interrogés sur les dépenses liées aux frais de scolarité, aux soins de santé, aux célébrations et à la sécurité alimentaire des enfants contacts. RÉSULTATS: Alors que la fréquentation scolaire des enfants contacts n'a pratiquement pas été affectée, on a constaté une baisse significative des résultats scolaires 6 mois plus tard (P < 0,001). Par ailleurs, les enfants contacts ont été confrontés à une insécurité alimentaire importante en termes de quantité et de variété de nourriture disponible, avec une augmentation d'au moins quatre fois après le traitement de la TB (P < 0,001). CONCLUSION: Les enfants contacts sont confrontés à une baisse potentielle de leurs résultats scolaires et à un risque d'insécurité alimentaire. Alors qu'une multitude de travaux sont entrepris pour réduire les coûts des soins pour les patients atteints de TB, il est nécessaire de mettre davantage l'accent sur la prospérité éducative et sociale des enfants contacts, étant donné que les adultes atteints de TB ont des implications socio-économiques pour l'ensemble du ménage.

4.
BJA Educ ; 23(1): 2-7, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36601025
5.
Public Health ; 215: 1-11, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36587446

RESUMEN

OBJECTIVE: This study aimed to compare the long-term physical and mental health outcomes of matched severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-positive and SARS-CoV-2-negative patients controlling for seasonal effects. STUDY DESIGN: This was a retrospective cohort study. METHODS: This study enrolled patients presenting to emergency departments participating in the Canadian COVID-19 Emergency Department Rapid Response Network. We enrolled consecutive eligible consenting patients who presented between March 1, 2020, and July 14, 2021, and were tested for SARS-CoV-2. Research assistants randomly selected four site and date-matched SARS-CoV-2-negative controls for every SARS-CoV-2-positive patient and interviewed them at least 30 days after discharge. We used propensity scores to match patients by baseline characteristics and used linear regression to compare Veterans RAND 12-item physical health component score (PCS) and mental health component scores (MCS), with higher scores indicating better self-reported health. RESULTS: We included 1170 SARS-CoV-2-positive patients and 3716 test-negative controls. The adjusted mean difference for PCS was 0.50 (95% confidence interval [CI]: -0.36, 1.36) and -1.01 (95% CI: -1.91, -0.11) for MCS. Severe disease was strongly associated with worse PCS (ß = -7.4; 95% CI: -9.8, -5.1), whereas prior mental health illness was strongly associated with worse MCS (ß = -5.4; 95% CI: -6.3, -4.5). CONCLUSION: Physical health, assessed by PCS, was similar between matched SARS-CoV-2-positive and SARS-CoV-2-negative patients, whereas mental health, assessed by MCS, was worse during a time when the public experienced barriers to care. These results may inform the development and prioritization of support programs for patients.


Asunto(s)
COVID-19 , SARS-CoV-2 , Humanos , Estudios Retrospectivos , Puntaje de Propensión , Estudios Prospectivos , Canadá , Evaluación de Resultado en la Atención de Salud
6.
Int J Tuberc Lung Dis ; 26(12): 1162-1169, 2022 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-36447310

RESUMEN

OBJECTIVE: To determine the costs and catastrophic costs incurred by drug-susceptible (DS) pulmonary TB patients in The Gambia.METHODS: This observational study collected cost and socio-economic data using a micro-costing approach from the household perspective from 244 adult DS-TB patients with pulmonary TB receiving treatment through the national treatment programme in The Gambia. We used data collected between 2017 and 2020 using an adapted version of the WHO generic patient cost survey instrument to estimate costs and the proportion of patients experiencing catastrophic costs (≥20% of household income).RESULTS: The mean total cost of the TB episode was $104.11 (2018 USD). Direct costs were highest before treatment ($22.93). Indirect costs accounted for over 50% of the entire episode costs. Using different income estimation approaches and catastrophic cost thresholds, 0.4-75% of participants encountered catastrophic costs, showing the variability of results given the different assumptions we utilised.CONCLUSIONS: We show that despite the benefits of free TB care and treatment, DS-TB patients still incur substantial direct and indirect costs, and cases of impoverishing expenditure varied vastly depending on the income estimation approaches used.


Asunto(s)
Estrés Financiero , Tuberculosis Pulmonar , Adulto , Humanos , Gambia , Gastos en Salud , Renta , Tuberculosis Pulmonar/diagnóstico , Tuberculosis Pulmonar/tratamiento farmacológico
7.
Mol Hum Reprod ; 27(6)2021 05 29.
Artículo en Inglés | MEDLINE | ID: mdl-33973015

RESUMEN

Many modern techniques employed to uncover the molecular fundamentals underlying biological processes require dissociated cells as their starting point/substrate. Investigations into ovarian endocrinology or folliculogenesis, therefore, necessitate robust protocols for dissociating the ovary into its constituent cell populations. While in the mouse, methods to obtain individual, mature follicles are well-established, the separation and isolation of single cells of all types from early mouse follicles, including somatic cells, has been more challenging. Herein we present two methods for the isolation of somatic cells in the ovary. These methods are suitable for a range of applications relating to the study of folliculogenesis and mouse ovarian development. First, an enzymatic dissociation utilising collagenase and a temporary, primary cell culture step using neonatal mouse ovaries which yields large quantities of granulosa cells from primordial, activating, and primary follicles. Second, a rapid papain dissociation resulting in a high viability single cell suspension of ovarian somatic cells in less than an hour, which can be applied from embryonic to adult ovarian samples. Collectively these protocols can be applied to a broad array of investigations with unique advantages and benefits pertaining to both.


Asunto(s)
Recolección de Tejidos y Órganos/métodos , Animales , Femenino , Ratones
8.
Reprod Fertil Dev ; 32(12): 1027-1039, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32758351

RESUMEN

Ovarian granulosa cells are fundamental for oocyte maintenance and maturation. Recent studies have demonstrated the importance of members of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signalling pathway in the granulosa cell population of mouse and horse ovaries, with perturbation of JAK1 signalling in the mouse shown to impair oocyte maintenance and accelerate primordial follicle activation. The presence and role of the JAK/STAT pathway in human granulosa cells has yet to be elucidated. In this study, expression of JAK1, STAT1 and STAT3 was detected in oocytes and granulosa cells of human ovarian sections from fetal (40 weeks gestation) and premenopausal ovaries (34-41 years of age; n=3). To determine the effects of JAK1 signalling in granulosa cells, the human granulosa-like cell line COV434 was used, with JAK1 inhibition using ruxolitinib. Chemical inhibition of JAK1 in COV434 cells with 100nM ruxolitinib for 72h resulted in significant increases in STAT3 mRNA (P=0.034) and p-Y701-STAT1 protein (P=0.0117), demonstrating a role for JAK1 in modulating STAT in granulosa cells. This study implicates a conserved role for JAK/STAT signalling in human ovary development, warranting further investigation of this pathway in human granulosa cell function.


Asunto(s)
Células de la Granulosa/metabolismo , Janus Quinasa 1/metabolismo , Ovario/metabolismo , Factor de Transcripción STAT1/metabolismo , Factor de Transcripción STAT3/metabolismo , Adulto , Línea Celular , Inhibidores Enzimáticos/farmacología , Femenino , Células de la Granulosa/efectos de los fármacos , Humanos , Janus Quinasa 1/antagonistas & inhibidores , Nitrilos , Folículo Ovárico/efectos de los fármacos , Folículo Ovárico/metabolismo , Pirazoles/farmacología , Pirimidinas , Factor de Transcripción STAT1/genética , Factor de Transcripción STAT3/genética , Transducción de Señal/efectos de los fármacos , Transducción de Señal/fisiología
9.
BMC Infect Dis ; 20(1): 469, 2020 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-32615981

RESUMEN

BACKGROUND: Interferon-γ release assays (IGRA) with Resuscitation promoting factor (Rpf) proteins enhanced tuberculosis (TB) screening and diagnosis in adults but have not been evaluated in children. Children often develop paucibacillary TB and their immune response differs from that of adults, which together affect TB disease diagnostics and immunodiagnostics. We assessed the ability of Rpf to identify infection among household TB-exposed children in The Gambia and investigated their ability to discriminate Mycobacterium tuberculosis complex (MTBC) infection from active TB disease in children. METHODS: Detailed clinical investigations were done on 93 household TB-exposed Gambian children and a tuberculin skin test (TST) was administered to asymptomatic children. Venous blood was collected for overnight stimulation with ESAT-6/CFP-10-fusion protein (EC), purified protein derivative and RpfA, B, C, D and E. Interferon gamma (IFN-γ) production was measured by ELISA in supernatants and corrected for the background level. Infection status was defined by IGRA with EC and TB disease by mycobacterial confirmation and/or clinical diagnosis. We compared IFN-γ levels between infected and uninfected children and between infected and TB diseased children using a binomial logistic regression model while correcting for age and sex. A Receiver Operating Characteristics analysis was done to find the best cut-off for IFN-γ level and calculate sensitivity and specificity. RESULTS: Interferon gamma production was significantly higher in infected (IGRA+, n = 45) than in uninfected (IGRA-, n = 20) children after stimulation with RpfA, B, C, and D (P = 0.03; 0.007; 0.03 and 0.003, respectively). Using RpfB and D-specific IFN-γ cut-offs (33.9 pg/mL and 67.0 pg/mL), infection was classified with a sensitivity-specificity combination of 73-92% and 77-72% respectively, which was similar to and better than 65-75% for TST. Moreover, IFN-γ production was higher in infected than in TB diseased children (n = 28, 5 bacteriologically confirmed, 23 clinically diagnosed), following RpfB and D stimulation (P = 0.02 and 0.03, respectively). CONCLUSION: RpfB and RpfD show promising results for childhood MTBC infection screening, and both performed similar to and better than the TST in our study population. Additionally, both antigens appear to discriminate between infection and disease in children and thus warrant further investigation as screening and diagnostic antigens for childhood TB.


Asunto(s)
Antígenos Bacterianos/inmunología , Proteínas Bacterianas/inmunología , Citocinas/inmunología , Ensayos de Liberación de Interferón gamma/métodos , Tuberculosis Latente/diagnóstico , Tuberculosis Latente/epidemiología , Tamizaje Masivo/métodos , Mycobacterium tuberculosis/inmunología , Niño , Preescolar , Ensayo de Inmunoadsorción Enzimática , Composición Familiar , Femenino , Gambia/epidemiología , Humanos , Interferón gamma/inmunología , Interferón gamma/metabolismo , Tuberculosis Latente/microbiología , Masculino , Sensibilidad y Especificidad , Prueba de Tuberculina
10.
J Laryngol Otol ; 134(8): 747-749, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32571439

RESUMEN

OBJECTIVE: To report our experience of diagnosis, investigation and management in patients who had undergone laryngectomy secondary to previous squamous cell carcinoma, who were subsequently infected with severe acute respiratory syndrome coronavirus-2 during the coronavirus disease 2019 pandemic. CASE REPORTS: Four post-laryngectomy patients with laboratory-proven severe acute respiratory syndrome coronavirus-2 infection were admitted to our institution from 1 March to 1 May 2020. All patients displayed symptoms of coronavirus disease 2019 and underwent investigations, including swab and serum sampling, and chest X-ray where indicated. All were managed conservatively on dedicated coronavirus disease 2019 wards and were discharged without the requirement of higher level care. CONCLUSION: It is hypothesised that laryngectomy may offer a protective effect against severe or critical disease in severe acute respiratory syndrome coronavirus-2 infection. We hope sharing our experience will aid all practitioners in the management of this, often intimidating, cohort of patients.


Asunto(s)
Carcinoma de Células Escamosas/cirugía , Infecciones por Coronavirus/diagnóstico , Neoplasias Laríngeas/patología , Laringectomía/efectos adversos , Neumonía Viral/diagnóstico , Anciano , Betacoronavirus/aislamiento & purificación , COVID-19 , Tratamiento Conservador/métodos , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/terapia , Infecciones por Coronavirus/virología , Femenino , Humanos , Laringectomía/métodos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Pandemias , Neumonía Viral/epidemiología , Neumonía Viral/terapia , Neumonía Viral/virología , Complicaciones Posoperatorias/virología , SARS-CoV-2 , Resultado del Tratamiento
11.
Colorectal Dis ; 22(11): 1658-1666, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32533887

RESUMEN

AIM: The aim of this study is to report changes in health-related quality of life attributable to lateral internal sphincterotomy for treatment of anal fissure. There is very little evidence on whether the overall health-related quality of life of patients is detrimentally affected by the condition, or which aspects of self-perceived health status improve after lateral internal sphincterotomy. This study will articulate which aspects of health tend to improve and guide postoperative expectations appropriately. Knowledge gained from this study may also identify gaps in an individual patient's episode of care. METHOD: Patients were prospectively identified when they consented to surgical treatment of their anal fissure and were contacted by phone to participate. Participants completed a number of patient-reported outcomes preoperatively and 6 months postoperatively. Faecal incontinence-related quality of life, pain and depression were measured at both time points. The severity of faecal incontinence was measured at both times. RESULTS: Participants reported high levels of pain preoperatively. Postoperatively, improvement in pain exceeded the threshold of clinical relevance (P < 0.01). Thirty-five per cent of participants reported significant effects of faecal incontinence preoperatively, while 26% did so postoperatively. Participants with multiple comorbidities were more likely to report faecal incontinence postoperatively than preoperatively. CONCLUSION: This study reports that lateral internal sphincterotomy improved pain symptoms without adverse effects on continence. Not all domains of health-related quality of life were similarly positively affected by anal fissure repair.


Asunto(s)
Fisura Anal , Esfinterotomía Lateral Interna , Canal Anal/cirugía , Enfermedad Crónica , Fisura Anal/cirugía , Humanos , Calidad de Vida , Resultado del Tratamiento
12.
Artículo en Inglés | MEDLINE | ID: mdl-31236523

RESUMEN

Despite known associations of insomnia disorder with alterations in cytokine and glucocorticoid (GC) production, neither the sensitivity of immune cells to a GC signal nor the reactivity of the hypothalamus-pituitary-adrenal (HPA) axis and inflammatory system to stress, or adaptation of these systems to repeated stress have been assessed in patients with insomnia. To investigate potential dysregulation in stress reactivity and adaptation to repeated exposure, a physiological stressor (the cold pressor test; CPT) was repeatedly administered to N = 20 participants with insomnia disorder (based on DSM-V, 18 females, age 30 ±â€¯2.5 years) and N = 20 sex-matched healthy controls following an at-home actigraphy and in-laboratory PSG. HPA and inflammatory markers (serum cortisol, plasma interleukin [IL]-6) were measured at baseline/resting levels and following each of the three CPTs. In addition, sensitivity of monocytes to the synthetic GC dexamethasone was assessed in-vitro at baseline levels in order to examine the cortisol-IL-6 interplay at the cell level. Compared to healthy controls, individuals with insomnia disorder exhibited shorter sleep duration as assessed by actigraphy and PSG (p ≤ 0.05). HPA, but not inflammatory reactivity to the repeated CPT challenge was greater in insomnia disorder (p ≤ 0.05 for group effect), due to greater cortisol responses to the initial CPT (p ≤ 0.05). There were no between-group differences in the ability of the HPA to adapt to stress repetition nor in basal/resting levels of cortisol, IL-6, and GC sensitivity. These findings suggest that insomnia disorder potentiates HPA axis reactivity to initial/novel stressors, which may constitute a pathway underlying adverse health consequences in the long term.

13.
Osteoporos Int ; 30(7): 1383-1394, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30937483

RESUMEN

Little is known about post-acute care following hip fracture surgery. We investigated discharge destinations from surgical hospitals for nine Canadian provinces. We identified significant heterogeneity in discharge patterns across provinces suggesting different post-acute recovery pathways. Further work is required to determine the impact on patient outcomes and health system costs. INTRODUCTION: To examine discharge destinations by provinces in Canada, adjusting for patient, injury, and care characteristics. METHODS: We analyzed population-based hospital discharge abstracts from a national administrative database for community-dwelling patients who underwent hip fracture surgery between 2004 and 2012 in Canada. Discharge destination was categorized as rehabilitation, home, acute care, and continuing care. Multinomial logistic regression modeling compared proportions of discharge to rehabilitation, acute care, and continuing care versus home between each province and Ontario. Adjusted risk differences and risk ratios were estimated. RESULTS: Of 111,952 previously community-dwelling patients aged 65 years or older, 22.5% were discharged to rehabilitation, 31.6% to home, 27.0% to acute care, and 18.2% to continuing care, with significant variation across provinces (p < 0.001). The proportion of discharge to rehabilitation ranged from 2.4% in British Columbia to 41.0% in Ontario while the proportion discharged home ranged from 20.3% in Prince Edward Island to 52.2% in British Columbia. The proportion of discharge to acute care ranged from 15.2% in Ontario to 58.8% in Saskatchewan while the proportion discharged to continuing care ranged from 9.3% in Manitoba and Prince Edward Island to 22.9% in New Brunswick. Adjusting for hospital type changed the direction of the provincial effect on discharge to continuing care in two provinces, but statistical significance remained consistent with the primary analysis. CONCLUSIONS: Discharge destination from the surgical hospital after hip fracture is highly variable across nine Canadian provinces. Further work is required to determine the impact of this heterogeneity on patient outcomes and health system costs.


Asunto(s)
Fracturas de Cadera/rehabilitación , Alta del Paciente/estadística & datos numéricos , Características de la Residencia/estadística & datos numéricos , Anciano , Anciano de 80 o más Años , Canadá , Continuidad de la Atención al Paciente/organización & administración , Continuidad de la Atención al Paciente/estadística & datos numéricos , Bases de Datos Factuales , Femenino , Fijación de Fractura/métodos , Fijación de Fractura/rehabilitación , Investigación sobre Servicios de Salud/métodos , Fracturas de Cadera/cirugía , Humanos , Vida Independiente/estadística & datos numéricos , Masculino , Transferencia de Pacientes/estadística & datos numéricos , Cuidados Posoperatorios/métodos , Cuidados Posoperatorios/estadística & datos numéricos
14.
Public Health Action ; 9(4): 166-168, 2019 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-32042609

RESUMEN

In some low and middle-income countries, 10-20% of patients presenting with a persistent cough have tuberculosis (TB). Once TB is excluded, health service provision for alternative diagnoses is limited. We prospectively studied patients with two Xpert-negative sputum results presenting to a TB clinic in The Gambia. Of 239 patients, 108 did not have TB; 65/102 (6 were lost to follow-up) had alternative diagnoses, 24.6% of which were non-respiratory; 37/102 had no diagnosis, 27.0% of whom were HIV-1-positive; 37.8% had a history of TB and 24.3% smoked. We highlight the need for general health service integration with TB platforms and exploration of non-TB patients with chronic respiratory symptoms.


Dans certains pays à revenu faible et moyen, 10­20% des patients se présentant avec une toux persistante ont une tuberculose (TB). Une fois que la TB est exclue, la prise en charge des diagnostics alternatifs est limitée. Nous avons étudié de façon prospective les patients ayant eu deux tests de crachats négatifs à l'Xpert® MTB/RIF se présentant à un dispensaire TB en Gambie. Des 239 patients, 108 n'avaient pas de TB ; 65/102 (6 perdus de vue) ont eu un autre diagnostic (non respiratoire dans 24,6% des cas) ; 37/102 n'ont pas eu de diagnostic, dont 27,0% ont été positifs à l'infection par le virus de l'immunodéficience humaine 1, 37,8% avaient des antécédents de TB et 24,3% fumaient. Nous mettons l'accent sur le besoin d'intégration générale des services de santé avec des plateformes TB et une exploration des patients non TB ayant des symptômes respiratoires chroniques.


En algunos países de recursos bajos y medianos, 10­20% de pacientes que acuden a la consulta con tos persistente presentan tuberculosis (TB). Una vez que se ha excluido el diagnóstico de TB, la provisión de servicios de salud para otras afecciones es escasa. En el presente estudio se analizaron de manera prospectiva los pacientes con dos resultados negativos de la prueba Xpert® MTB/RIF en muestras de esputo, que acudían a un consultorio de TB en Gambia. Ciento ocho de los 239 pacientes no presentaban TB. En 65 de 102 pacientes (seis perdidos durante el seguimiento) se definió un diagnóstico diferente de TB y en 24,6% de los casos se trataba de una afección no respiratoria. En 37 de los 102 pacientes no se formuló un diagnóstico y de estos el 27,0% eran positivos frente al virus de la inmunodeficiencia humana, 37,8% tenían antecedente de TB y 24,3% eran fumadores. Los resultados del estudio destacan la necesidad de integrar los servicios generales de salud con las plataformas de atención de la TB y de explorar a los pacientes con síntomas respiratorios crónicos que no presentan TB.

15.
Int J Tuberc Lung Dis ; 23(12): 1286-1292, 2019 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-31931913

RESUMEN

BACKGROUND: It is very difficult to observe tuberculosis (TB) transmission chains and thus, identify superspreaders. We investigate cough duration as a proxy measure of transmission to assess the presence of potential TB superspreaders.DESIGN: We analyzed six studies from China, Peru, The Gambia and Uganda, and determined the distribution of cough duration and compared it with several theoretical distributions. To determine factors associated with cough duration, we used linear regression and boosted regression trees to examine the predictive power of patient, clinical and environmental characteristics.RESULTS: We found within-study heterogeneity in cough duration and strong similarities across studies. Approximately 20% of patients contributed 50% of total cough days, and around 50% of patients contributed 80% of total cough days. The cough duration distribution suggested an initially increasing, and subsequently, decreasing hazard of diagnosis. While some of the exposure variables showed statistically significant associations with cough duration, none of them had a strong effect. Multivariate analyses of different model types did not produce a model that had good predictive power.CONCLUSION: We found consistent evidence for the presence of supercoughers, but no characteristics predictive of such individuals.


Asunto(s)
Tos/fisiopatología , Tuberculosis Pulmonar/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , China/epidemiología , Estudios de Cohortes , Tos/etiología , Femenino , Gambia/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Perú/epidemiología , Tuberculosis Pulmonar/complicaciones , Tuberculosis Pulmonar/transmisión , Uganda/epidemiología , Adulto Joven
16.
Sci Total Environ ; 637-638: 282-294, 2018 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-29751309

RESUMEN

Road salt mitigates winter highway icing but accumulates in watershed soils and receiving waters, affecting soil chemistry and physical, biological, and ecological processes. Despite efforts to reduce salt loading in watersheds, accumulated cations and Cl- continue to impact tributaries and lakes, and the recovery process is not well understood. Lake George, New York (USA) is typical of many temperate lakes at risk for elevated Cl- concentrations from winter deicing; the lake salt concentration increased by ~3.4% year-1 since 1980. Here, we evaluated the ionic composition in Finkle Brook, a major watershed draining to Lake George, studied intermittently since 1970 and typical of other salt-impacted Lake George tributaries. Salt loading in the Lake George basin since the 1940s displaced cations from exchange sites in basin soils; these desorbed cations follow a simple ion-exchange model, with lower sodium and higher calcium, magnesium and potassium fluxes in runoff. Reduced salt application in the Finkle Brook watershed during the low-snow winter of 2015-2016 led to a 30-40% decline of Cl- and base cations in the tributary, implying a Cl- soil half-life of 1-2 years. We developed a conceptual model that describes cation behavior in runoff from a watershed that received road salt loading over a long period of time, and then recovery following reduced salt loading. Next, we developed a dynamic model estimating time to steady-state for Cl- in Lake George with road salt loading starting in 1940, calibrating the model with tributary runoff and lake chemistry data from 1970 and 1980, respectively, and forecasting Cl- concentrations in Lake George based on various scenarios of salt loading and soil retention of Cl-. Our Lake George models are readily adaptable to other temperate lakes with drainage basins where road salt is applied during freezing conditions and paved roads cover a portion of the watershed.

17.
Pharmacogenomics J ; 18(3): 377-390, 2018 05 22.
Artículo en Inglés | MEDLINE | ID: mdl-28440344

RESUMEN

Despite investment in toxicogenomics, nonclinical safety studies are still used to predict clinical liabilities for new drug candidates. Network-based approaches for genomic analysis help overcome challenges with whole-genome transcriptional profiling using limited numbers of treatments for phenotypes of interest. Herein, we apply co-expression network analysis to safety assessment using rat liver gene expression data to define 415 modules, exhibiting unique transcriptional control, organized in a visual representation of the transcriptome (the 'TXG-MAP'). Accounting for the overall transcriptional activity resulting from treatment, we explain mechanisms of toxicity and predict distinct toxicity phenotypes using module associations. We demonstrate that early network responses complement traditional histology-based assessment in predicting outcomes for longer studies and identify a novel mechanism of hepatotoxicity involving endoplasmic reticulum stress and Nrf2 activation. Module-based molecular subtypes of cholestatic injury derived using rat translate to human. Moreover, compared to gene-level analysis alone, combining module and gene-level analysis performed in sequence identifies significantly more phenotype-gene associations, including established and novel biomarkers of liver injury.


Asunto(s)
Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/genética , Redes Reguladoras de Genes/efectos de los fármacos , Hígado/efectos de los fármacos , Transcriptoma/genética , Animales , Estrés del Retículo Endoplásmico/efectos de los fármacos , Perfilación de la Expresión Génica/métodos , Regulación de la Expresión Génica/efectos de los fármacos , Humanos , Hígado/metabolismo , Factor 2 Relacionado con NF-E2/genética , Fenotipo , Ratas , Toxicogenética/métodos , Transcriptoma/efectos de los fármacos
18.
Osteoporos Int ; 29(3): 653-663, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29214329

RESUMEN

The extent of Canadian provincial variation in hip fracture surgical timing is unclear. Provinces performed a similar proportion of surgeries within three inpatient days after adjustment. Time to surgery varied by timing of admission across provinces. This may reflect different approaches to providing access to hip fracture surgery. INTRODUCTION: The aim of this study was to compare whether time to surgery after hip fracture varies across Canadian provinces for surgically fit patients and their subgroups defined by timing of admission. METHODS: We retrieved hospitalization records for 140,235 patients 65 years and older, treated surgically for hip fracture between 2004 and 2012 in Canada (excluding Quebec). We studied the proportion of surgeries on admission day and within 3 inpatient days, and times required for 33%, 66%, and 90% of surgeries across provinces and by subgroups defined by timing of admission. Differences were adjusted for patient, injury, and care characteristics. RESULTS: Overall, provinces performed similar proportions of surgeries within the recommended three inpatient days, with all provinces requiring one additional day to perform the recommended 90% of surgeries. Prince Edward Island performed 7.0% more surgeries on admission day than Ontario irrespective of timing of admission (difference = 7.0; 95% CI 4.0, 9.9). The proportion of surgeries on admission day was 6.3% lower in Manitoba (difference = - 6.3; 95% CI - 12.1, - 0.6), and 7.7% lower in Saskatchewan (difference = - 7.7; 95% CI - 12.7, - 2.8) compared to Ontario. These differences persisted for late weekday and weekend admissions. The time required for 33%, 66%, and 90% of surgeries ranged from 1 to 2, 2-3, and 3-4 days, respectively, across provinces by timing of admission. CONCLUSIONS: Provinces performed similarly with respect to recommended time for hip fracture surgery. The proportion of surgeries on admission day, and time required to complete 33% and 66% of surgeries, varied across provinces and by timing of admission. This may reflect different provincial approaches to providing access to hip fracture surgery.


Asunto(s)
Fracturas de Cadera/cirugía , Admisión del Paciente/estadística & datos numéricos , Tiempo de Tratamiento/estadística & datos numéricos , Atención Posterior/estadística & datos numéricos , Anciano , Anciano de 80 o más Años , Canadá , Bases de Datos Factuales , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Masculino , Factores de Tiempo
19.
Hernia ; 21(6): 933-940, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29052082

RESUMEN

PURPOSE: For Canadians, as in many countries, waiting for elective surgery is expected. The duration of the wait raises questions about the maximum amount of time patients should wait for their surgery. The primary objective of this study was to test for a relationship between the length of time patients waited for elective hernia repair surgery and change in patients' self-reported health. METHODS: This study was based on a prospectively recruited longitudinal cohort of patients waiting for elective hernia repair surgery. Participants completed the PHQ-9, PEG, EQ-5D(3L) generic instruments, and the condition-specific COMI-hernia. Multivariate regression models explored associations between patient-reported outcomes and potential confounders, including age, sex, socio-economic status, and medical comorbidities. RESULTS: There were 118 participants and the modal age group was 61-70 years. The average wait time for participants was 22.5 weeks. There were no relationships between the duration of participants' wait for hernia repair and the change in patients' self-reported health for hernia-specific outcomes or overall health-related quality of life. DISCUSSION: There are gains in health-related quality of life to be realized by prioritizing symptomatic patients. Participants with greater pre-operative depression, pain, and hernia-related symptoms experienced an improvement in health prior to surgery, though more clarity is needed on the mechanisms that led to improved health. CONCLUSION: Many countries face problems with wait lists for elective surgery-and few have effective processes for triaging patients. This study shows that duration of time on the wait list was not associated with change in hernia patients' self-reported health.


Asunto(s)
Procedimientos Quirúrgicos Electivos , Herniorrafia , Listas de Espera , Adulto , Canadá , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Medición de Resultados Informados por el Paciente , Calidad de Vida , Tiempo de Tratamiento
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