44 results on '"C. O’Dea"'
Search Results
2. A sustainable approach to the training and education of health promoters through incorporation into medical student and resident education
- Author
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A. Goroncy, B.-E. Smith, J. Pineda, and C. O'dea
- Subjects
Infectious and parasitic diseases ,RC109-216 ,Public aspects of medicine ,RA1-1270 - Published
- 2014
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3. Galaxy interactions are the dominant trigger for local type 2 quasars
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J C S Pierce, C Tadhunter, C Ramos Almeida, P Bessiere, J V Heaton, S L Ellison, G Speranza, Y Gordon, C O’Dea, L Grimmett, and L Makrygianni
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- 2023
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4. A molecular absorption line survey towards the AGN of Hydra-A
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Tom Rose, A C Edge, F Combes, S Hamer, B R McNamara, H Russell, M Gaspari, P Salomé, C Sarazin, G R Tremblay, S A Baum, M N Bremer, M Donahue, A C Fabian, G Ferland, N Nesvadba, C O’Dea, J B R Oonk, and A B Peck
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- 2020
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5. Constraining cold accretion on to supermassive black holes: molecular gas in the cores of eight brightest cluster galaxies revealed by joint CO and CN absorption
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Tom Rose, A C Edge, F Combes, M Gaspari, S Hamer, N Nesvadba, A B Peck, C Sarazin, G R Tremblay, S A Baum, M N Bremer, B R McNamara, C O’Dea, J B R Oonk, H Russell, P Salomé, M Donahue, A C Fabian, G Ferland, R Mittal, and A Vantyghem
- Published
- 2019
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6. Deep and narrow CO absorption revealing molecular clouds in the Hydra-A brightest cluster galaxy
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Tom Rose, A C Edge, F Combes, M Gaspari, S Hamer, N Nesvadba, H Russell, G R Tremblay, S A Baum, C O’Dea, A B Peck, C Sarazin, A Vantyghem, M Bremer, M Donahue, A C Fabian, G Ferland, B R McNamara, R Mittal, J B R Oonk, P Salomé, A M Swinbank, and M Voit
- Published
- 2019
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7. Gemini IFU, VLA, and HST observations of the OH Megamaser Galaxy IRAS17526 + 3253★
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Dinalva A Sales, A Robinson, R A Riffel, T Storchi-Bergmann, J F Gallimore, P Kharb, S Baum, C O’Dea, C Hekatelyne, and F Ferrari
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- 2019
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8. The MURALES survey. VI. Properties and origin of the extended line emission structures in radio galaxies
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B. Balmaverde, A. Capetti, R. D. Baldi, S. Baum, M. Chiaberge, R. Gilli, A. Jimenez-Gallardo, A. Marconi, F. Massaro, E. Meyer, C. O’Dea, G. Speranza, E. Torresi, and G. Venturi
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Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics - Astrophysics of Galaxies ,Astrophysics::Galaxy Astrophysics - Abstract
This is the sixth paper presenting the results of the MUse RAdio Loud Emission line Snapshot survey (MURALES). We observed 37 radio sources from the 3C sample with z4 kpc) ionized gas is seen in all but two of the 26 FRIIs. It usually takes the form of elongated or filamentary structures, typically extending between 10 and 30 kpc, but also reaching distances of ~80 kpc. We find that 1) the large-scale ionized gas structures show a tendency to be oriented at large angles from the radio axis, and 2) the gas on a scale of a few kpc from the nucleus often shows ordered rotation with a kinematical axis forming a median angle of 65 degrees with the radio axis. We also discuss the velocity field and ionization properties of the EELRs. The observed emission line structures appear to be associated with gaseous "superdisks" formed after a gas rich merger. The different properties of the EELR can be explained with a combination of the source evolutionary state and the orientation of the "superdisk" with respect to the radio axis. The general alignment between the superdisks and radio axis might be produced by stable and coherent accretion maintained over long timescales., Pre-proofs version - Accepted for publication in A&A
- Published
- 2022
9. Polarization and variability of compact sources measured in Planck time-ordered data
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G. Rocha, R. Keskitalo, B. Partridge, A. Marscher, C. O’Dea, T. J. Pearson, and K. M. Górski
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Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Space and Planetary Science ,Astrophysics::Instrumentation and Methods for Astrophysics ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Galaxy Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
This paper introduces a new Planck Catalog of Polarized and Variable Compact Sources (PCCS-PV) comprising 153 sources, the majority of which are extragalactic. The data include both the total flux density and linear polarization measured by Planck with frequency coverage from 30 to 353 GHz, and temporal spacing ranging from days to years. We classify most sources as beamed, extragalactic radio sources; the catalog also includes several radio galaxies, Seyfert galaxies, and Galactic and Magellanic Cloud sources, including H IIi regions and planetary nebulae. An advanced extraction method applied directly to the multifrequency Planck time-ordered data, rather than the mission sky maps, was developed to allow an assessment of the variability of polarized sources. Our analysis of the time-ordered data from the Planck mission, tod2flux, allowed us to catalog the time-varying emission and polarization properties for these sources at the full range of polarized frequencies employed by Planck, 30 to 353 GHz. PCCS-PV provides the time- and frequency-dependent, polarized flux densities for all 153 sources. To illustrate some potential applications of the PCCS- PV, we conducted preliminary comparisons of our measurements of selected sources with published data from other astronomical instruments. In summary, we find general agreement between the Planck and the Institut de Radioastronomie Millim\'etrique (IRAM) polarization measurements as well as with the Mets\"ahovi 37 GHz values at closely similar epochs. These combined measurements also show the value of PCCS-PV results and the PCCS2 catalog for filling in missing spectral (or temporal) coverage and helping to define the spectral energy distributions of extragalactic sources. In turn, these results provide useful clues as to the physical properties of the sources., Comment: 18 pages, accepted for publication in Astronomy & Astrophysics
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- 2023
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10. Exercise-induced pulmonary hemorrhage (EIPH)
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Corrine R. Sweeney, N. Edward Robinson, Joseph C. O'Dea, Howard H. Erickson, and John Pascoe
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Dorsum ,medicine.medical_specialty ,Lung ,Equine ,business.industry ,Strenuous exercise ,Horse ,Exercise-induced pulmonary hemorrhage ,Bleed ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Internal medicine ,Cardiology ,Medicine ,Pulmonary hemorrhage ,business ,Airway - Abstract
Summary o 1. Exercise-induced pulmonary hemorrhage (EIPH) has occurred when evidence of hemorrhage into an airway is found post-exercise and no other cause can be found. It is likely that all horses have evidence of EIPH after intense exercise. 2. EIPH in the horse is a normal response of horses to strenuous exercise. The blood originates primarily from the pulmonary circulation. 3. In general, EIPH has little effect on racing performance unless the bleeding is severe. Horses that bleed and suffer a substantial reduction in performance may be suffering from other problems, both intrinsic or extrinsic. 4. Many horses with a history of bleeding have lesions in the dorsal portion of the caudal lobes of the lung.
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- 1995
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11. A sustainable approach to the training and education of health promoters through incorporation into medical student and resident education
- Author
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B.-E. Smith, A. Goroncy, J. Pineda, and C. O'dea
- Subjects
Medical education ,business.industry ,Medicine ,Resident education ,Infectious and parasitic diseases ,RC109-216 ,General Medicine ,Public aspects of medicine ,RA1-1270 ,business ,Training (civil) - Published
- 2014
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12. The CfA Seyfert Sample at 8.4 GHz
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Marek J. Kukula, Alan Pedlar, S. Baum, C. O’Dea, and S. Unger
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- 1994
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13. High Sensitivity Radio Observations of NGC 4151
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A. Pedlar, M. Kukula, D. Longley, D. Axon, S. Baum, and C. O’Dea
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- 1992
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14. 8.4 GHz VLA observations of the CfA seyfert sample
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Marek J. Kukula, Alan Pedlar, S. W. Unger, S. Baum, and C. O'Dea
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Space and Planetary Science ,Astronomy and Astrophysics - Published
- 1994
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15. Comments on vaccination against strangles
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J C, O'Dea
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Streptococcal Infections ,Bacterial Vaccines ,Animals ,Horse Diseases ,Horses - Published
- 1969
16. Stormy Weather in 3C 196.1: Nuclear Outbursts and Merger Events Shape the Environment of the Hybrid Radio Galaxy 3C 196.1.
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F. Ricci, L. Lovisari, R. P. Kraft, F. Massaro, A. Paggi, E. Liuzzo, G. Tremblay, W. R. Forman, S. Baum, C. O’Dea, and B. Wilkes
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RADIO galaxies ,IONIZATION (Atomic physics) ,EMISSIONS (Air pollution) ,X-rays ,MORPHOLOGY - Abstract
We present a multiwavelength analysis based on archival radio, optical, and X-ray data of the complex radio source 3C 196.1, whose host is the brightest cluster galaxy of a z = 0.198 cluster. HST data show Hα+[N ii] emission aligned with the jet 8.4 GHz radio emission. An Hα+[N ii] filament coincides with the brightest X-ray emission, the northern hotspot. Analysis of the X-ray and radio images reveals cavities located at galactic and cluster scales. The galactic-scale cavity is almost devoid of 8.4 GHz radio emission and the southwestern Hα+[N ii] emission is bounded (in projection) by this cavity. The outer cavity is cospatial with the peak of 147 MHz radio emission, and hence we interpret this depression in X-ray surface brightness as being caused by a buoyantly rising bubble originating from an active galactic nuclei outburst ∼280 Myr ago. A Chandra snapshot observation allowed us to constrain the physical parameters of the cluster, which has a cool core with a low central temperature ∼2.8 keV, low central entropy index ∼13 keV cm
2 and a short cooling time of ∼500 Myr, which is < 0.05 of the age of the universe at this redshift. By fitting jumps in the X-ray density, we found Mach numbers between 1.4 and 1.6, consistent with a shock origin. We also found compelling evidence of a past merger, indicated by a morphology reminiscent of gas sloshing in the X-ray residual image. Finally, we computed the pressures, enthalpies Ecav and jet powers Pjet associated with the cavities: Ecav ∼ 7 × 1058 erg, Pjet ∼ 1.9 × 1044 erg s−1 for the inner cavity and Ecav ∼ 3 × 1060 erg, Pjet ∼ 3.4 × 1044 erg s−1 for the outer cavity. [ABSTRACT FROM AUTHOR]- Published
- 2018
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17. A MULITWAVELENGTH STUDY OF THREE HYBRID BLAZARS.
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E. C. Stanley, P. Kharb, M. L. Lister, H. L. Marshall, C. O’Dea, and S. Baum
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BL Lacertae objects ,ACTIVE galaxies ,RADIO sources (Astronomy) ,QUASARS ,ASTROPHYSICS - Abstract
We present multiwavelength imaging observations of PKS 1045−188, 8C 1849+670, and PKS 2216−038, three radio-loud active galactic nuclei from the MOJAVE-Chandra Sample that straddle the Fanaroff-Riley (FR) boundary between low- and high-power jets. These hybrid sources provide an excellent opportunity to study jet emission mechanisms and the influence of the external environment. We used archival VLA observations, and new Hubble and Chandra observations to identify and study the spectral properties of five knots in PKS 1045−188, two knots in 8C 1849+670, and three knots in PKS 2216−038. For the seven X-ray visible knots, we constructed and fit the broadband spectra using synchrotron and inverse Compton/cosmic microwave background (IC/CMB) emission models. In all cases, we found that the lack of detected optical emission ruled out the X-ray emission from the same electron population that produces radio emission. All three sources have high total extended radio power, similar to that of FR II sources. We find this is in good agreement with previously studied hybrid sources, where high-power hybrid sources emit X-rays via IC/CMB and the low-power hybrid sources emit X-rays via synchrotron emission. This supports the idea that it is total radio power rather than FR morphology that determines the X-ray emission mechanism. We found no significant asymmetries in the diffuse X-ray emission surrounding the host galaxies. Sources PKS 1045−188 and 8C 1849+670 show significant differences in their radio and X-ray termination points, which may result from the deceleration of highly relativistic bulk motion. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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18. Gather "Round": An Integrated Care Model for the Emergency Department Multi-Visit Patient.
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Feld A, Carollo M, Freeman-Reyes J, McCarthy S, Lind MA, Weinstein R, O'Dea C, Joy M, Morley EJ, Aitken P, Schwaner R, Giarraputo D, and Heslin SM
- Abstract
Purpose: Emergency departments (EDs) are a vital component of the United States healthcare system and care for over 130 million patient visits annually. Nonurgent ED visits can contribute to crowding, delays in care, and adverse effects. Many high-utilizing ED patients may present with complex medical, behavioral, and social needs that are not necessarily emergent or urgent in nature. The authors created an Integrated Care Model, called the Multi-Visit Patient (MVP) program, for patients with 5 or more visits to the ED in a rolling 12-month period. The MVP program incorporated an interdisciplinary group of ED leadership and case management (CM) to identify, engage, and intervene with ED MVPs, aiming to improve their ED utilization. Patients received comprehensive screenings for depression, falls, alcohol use disorder, caregiver support, social determinants of health, and more. Based on these screenings, the CM team implemented interventions such as connecting patients with outpatient specialists and linking patients to community-based organizations to optimize stability, wellness, and reduce ED utilization., Primary Practice Setting: The collaboratively developed MVP program was implemented in the ED of a large, suburban, tertiary care academic hospital., Findings/conclusions: The MVP program identified 221 MVP patients over a 20-month period and successfully connected with 89% of them. Of these 221 patients, 78% (172 patients) chose to engage in the MVP program, with 160 completing their engagement with an outcome. Among the patients who completed their engagement and for whom the study could match separate utilization data (151 patients), the study observed a 57% reduction in ED visits., Implications for Case Management Practice: Case managers play a crucial role in the effectiveness of the MVP program by coordinating comprehensive care for high-utilizing ED patients. The MVP program includes transition of care initiatives designed to improve patient outcomes. Through screenings and targeted interventions, case managers identify and address the complex medical, behavioral, and social needs of MVP patients. This collaborative, interdisciplinary approach underscores the importance of timely and coordinated care, benefiting both patients and the health system. The MVP program exemplifies the critical role of case managers in reducing unnecessary ED visits and enhancing overall patient care., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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19. Reliability of Three Landmine-Punch-Throw Variations and Their Load-Velocity Relationships Performed With the Dominant and Nondominant Hands.
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Omcirk D, Vetrovsky T, O'Dea C, Ruddock A, Wilson D, Maleček J, Padecky J, Janikov MT, and Tufano JJ
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- Humans, Reproducibility of Results, Young Adult, Male, Biomechanical Phenomena, Adult, Functional Laterality physiology, Rotation, Sitting Position, Hand physiology
- Abstract
Purpose: This study assessed the reliability and load-velocity profiles of 3 different landmine-punch-throw variations (seated without trunk rotation, seated with trunk rotation, and standing whole body) with different loads (20, 22.5, and 25.0 kg), all with the dominant hand and nondominant hand., Methods: In a quasi-randomized order, 14 boxers (24.1 [4.3] y, 72.6 [10.1] kg) performed 3 repetitions of each variation with their dominant hand and their nondominant hand, with maximal effort and 3 minutes of interset rest. Peak velocity was measured via the GymAware Power Tool (Kinetic Performance Technologies). The interclass correlation coefficients and their 95% CIs were used to determine the intrasession reliability of each variation × load × hand combination. Additionally, a 2 (hand) × 3 (variation) repeated-measures analysis of variance assessed the load-velocity profile slope, and a 3 (variation) × 2 (hand) × 3 (load) repeated-measures analysis of variance assessed the peak velocity of each variation., Results: Most variations were highly reliable (intraclass correlation coefficient > .91), with the nondominant hand being as reliable or more reliable than the dominant hand. Very strong linear relationships were observed for the group average for each variation (R2 ≥ .96). However, there was no variation × hand interaction for the slope, and there was no main effect for variation or hand. Additionally, there was no interaction for the peak velocity, but there were main effects for variation, hand, and load (P < .01)., Conclusion: Each variation was reliable and can be used to create upper-body ballistic unilateral load-velocity profiles. However, as with other research on load-velocity profile, individual data allowed for more accurate profiling than group average data.
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- 2024
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20. Using the project ECHO™ model to teach mental health topics in rural Guatemala: An implementation science-guided evaluation.
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de la Garza Iga FJ, Mejía Alvarez M, Cockroft JD, Rabin J, Cordón A, Elias Rodas DM, Grazioso MDP, Espinola M, O'Dea C, Schubert C, and Stryker SD
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- Humans, Guatemala, Implementation Science, Students, Mental Health, Rural Population
- Abstract
Background: Mental health (MH) disorders are major causes of disability in Guatemala. Unfortunately, limited academic training and funding resources make MH care inaccessible to most people in rural Guatemala. These disparities leave many indigenous populations without care. Project ECHO™ is an educational model used globally to deliver virtual training for providers in rural/ underserved communities. The aim of this project was to implement and evaluate a Project ECHO™ program bridging MH training gaps for providers who serve rural communities in Guatemala., Methods: The Project ECHO™ curriculum was implemented through a partnership between educational and nonprofit institutions in Guatemala City and the United States. Participants were primary care physicians and nurses working in rural Guatemala as well as medical/nursing/psychology students. Evaluation of its implementation was guided by a RE-AIM framework. Reach, effectiveness, adoption, fidelity, sustainability, acceptability, feasibility, and appropriateness were evaluated using a mixed-methods approach, using a pre-post survey and semi-structured focus groups., Results: Forty unique participants attended the five sessions. Attitudes about mental health did not change quantitatively but self-efficacy improved in four of five modules. High quality fidelity scores were noted in two of five sessions. Sustainability scores across multiple domains were highly rated. Scores on instruments measuring acceptability, feasibility, and appropriateness were high. Focus groups showed two main themes: the curriculum filled a gap in education and further adaptation of the model might help improve the experience., Conclusion: Implementation of the Project ECHO™ educational model appeared to have good reach/adoption, showed improvements in self-efficacy, illuminated facilitators and barriers to sustainability, and was felt to be acceptable, feasible, and appropriate. Qualitative analysis supported these conclusions. Future directions would include ongoing evaluation and monitoring of further Project ECHO™ curricular experiences through this partnership and adaptation of this project to other learners and settings in Latin America.
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- 2023
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21. Barriers and Facilitators to Prevention and Care of COVID-19 Infection in Cincinnati Latinx Families: a Community-Based Convergent Mixed Methods Study.
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Martin KJ, Castano C, Geraghty S, Horner SR, McCann E, Beck AF, Xu Y, Gomez L, O'Dea C, Jacquez F, Clark VLP, and Rule ARL
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- Adolescent, Adult, Humans, Emigration and Immigration, Hispanic or Latino, Pandemics, United States, Health Services Accessibility, Ohio, COVID-19, Emigrants and Immigrants
- Abstract
Background: Latinx populations have experienced disproportionately high case rates of COVID-19 across the USA. Latinx communities in non-traditional migration areas may experience greater baseline day-to-day challenges such as a lack of resources for immigrants and insufficient language services. These challenges may be exacerbated by the COVID-19 pandemic., Objective: This article describes the results of an initial community health needs assessment to better understand the prevention and care of COVID-19 infection in the Cincinnati Latinx community., Methods: We used convergent mixed methods to examine barriers and facilitators to COVID-19 prevention and care for those with infection., Results: Latinx adults ≥ 18 years old completed 255 quantitative surveys and 17 qualitative interviews. Overarching mixed methods domains included knowledge, prevention, work, challenges, and treatment. Quantitative results largely reinforced qualitative results (confirmation). Certain quantitative and qualitative results, however, diverged and expanded insights related to caring for COVID-19 infection among Latinx adults (expansion). There were infrequent contradictions between quantitative and qualitative findings (discordance). Primary barriers for the Latinx community during the COVID-19 pandemic included insecurities in food, jobs, housing, and immigration. Key facilitators included having trusted messengers of health-related information., Conclusion: Public health interventions should be centered on community partnerships and the use of trusted messengers. Wraparound services (including resources for immigrants) are essential public health services. Close partnership with employers is essential as lack of sick leave and mask supplies were more frequent barriers than knowledge. These findings emerged from experiences during the COVID-19 pandemic but likely generalize to future public health crises., (© 2022. W. Montague Cobb-NMA Health Institute.)
- Published
- 2023
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22. AAV-mediated expression of HLA-G for the prevention of experimental ocular graft vs. host disease.
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Nilles JP, Roberts D, Salmon JH, Song L, O'Dea C, Marjoram LT, Bower JJ, Hirsch ML, and Gilger BC
- Abstract
Ocular graft versus host disease (OGvHD) develops after allogeneic hematopoietic stem cell transplantation (HSCT) and manifests as ocular surface inflammatory disease. This study evaluated the efficacy of adeno-associated virus (AAV) gene therapy encoding human leukocyte antigen G (HLA-G) to inhibit OGvHD. A major histocompatibility mismatch chronic OGvHD murine model was evaluated. 7 days after HSCT, mice were dosed subconjunctivally with scAAV8-HLA-G1/5 (1 x 10
9 vg/eye), topical cyclosporine (twice daily), or left untreated. Body weights and tear production (red thread test) were recorded, and eyelid, corneal opacity, and corneal fluorescein retention were scored through day 44 after HSCT. Tissues were collected for vector biodistribution, ocular histology, and immunofluorescence. Compared with untreated HSCT eyes, those dosed with scAAV8-HLA-G1/5 had significantly reduced clinical inflammatory signs of OGvHD. On histology, eyes that received scAAV8-HLA-G1/5 or cyclosporine had a significantly lower mean limbal mononuclear cell count when compared with non-treated HSCT eyes. HLA-G immunofluorescence was detected in the subconjunctiva and peripheral cornea in HSCT animals treated with scAAV8-HLA-G1/5. Vector genomes were detected in the lacrimal gland, but not in the other tested organs. These results provide evidence that subconjunctival AAV targets ocular surface and corneal disease and support that HLA-G-based gene therapy may be an effective treatment for OGvHD., Competing Interests: M.L.H. and B.C.G. are coinventors of the AAV-HLA-G technology evaluated herein and are listed on a patent (pending) that is owned by the University of North Carolina and North Carolina State University. M.L.H. and B.C.G. are co-founders of Astro Therapeutics (which has licensed the HLA-G technology evaluated herein) and co-founders of Bedrock Therapeutics., (© 2023 The Author(s).)- Published
- 2023
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23. Microbial Diversity Profiling of Gut Microbiota of Macropus giganteus Using Three Hypervariable Regions of the Bacterial 16S rRNA.
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O'Dea C, Huerlimann R, Masters N, Kuballa A, Veal C, Fisher P, Stratton H, and Katouli M
- Abstract
Animal faecal contamination of surface waters poses a human health risk, as they may contain pathogenic bacteria or viruses. Of the numerous animal species residing along surface waterways in Australia, macropod species are a top contributor to wild animals' faecal pollution load. We characterised the gut microbiota of 30 native Australian Eastern Grey Kangaroos from six geographical regions (five kangaroos from each region) within South East Queensland in order to establish their bacterial diversity and identify potential novel species-specific bacteria for the rapid detection of faecal contamination of surface waters by these animals. Using three hypervariable regions (HVRs) of the 16S rRNA gene (i.e., V1-V3, V3-V4, and V5-V6), for their effectiveness in delineating the gut microbial diversity, faecal samples from each region were pooled and microbial genomic DNA was extracted, sequenced, and analysed. Results indicated that V1-V3 yielded a higher taxa richness due to its larger target region (~480 bp); however, higher levels of unassigned taxa were observed using the V1-V3 region. In contrast, the V3-V4 HVR (~569 bp) attained a higher likelihood of a taxonomic hit identity to the bacterial species level, with a 5-fold decrease in unassigned taxa. There were distinct dissimilarities in beta diversity between the regions, with the V1-V3 region displaying the highest number of unique taxa ( n = 42), followed by V3-V4 ( n = 11) and V5-V6 ( n = 8). Variations in the gut microbial diversity profiles of kangaroos from different regions were also observed, which indicates that environmental factors may impact the microbial development and, thus, the composition of the gut microbiome of these animals.
- Published
- 2021
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24. Effect of transfer from a pediatric to adult cystic fibrosis center on clinical status and hospital attendance.
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Collins R, Singh B, Payne DN, Bharat C, Noffsinger W, Dhaliwal SS, O'Dea C, and Mulrennan S
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- Adolescent, Adult, Child, Hospitals, Humans, Young Adult, Cystic Fibrosis therapy
- Abstract
Aim: Transfer from pediatric to adult services could lead to clinical deterioration, few studies have examined this. We sought to examine the clinical impact of a structured individualized transition and transfer process in patients with cystic fibrosis (CF)., Methods: Medical records of all patients with CF in Western Australia who transferred from a pediatric center (Princess Margaret Hospital for Children) to an adult CF center (Sir Charles Gairdner Hospital) between 2008 and 2012 were reviewed. Data were extracted for 2 years before and after transfer. The number of CF outpatient visits, inpatient days, and home intravenous antibiotic therapy (HIVT) days were recorded at yearly intervals before and after transfer. Sputum culture results at transfer were collected. All respiratory function and anthropometric data over the 4 years were extracted., Results: Forty-two patients with CF were transferred between 2008 and 2012. The mean age at transfer was 18.9 years (range 17-22). Compared to 1-year pre-transfer, the frequency of outpatient visits at 1- and 2-year post-transfer increased. After transfer, there was no change in BMI, HIVT days, or inpatient days, and no acceleration in the expected decline in FEV1., Conclusion: This study found that transfer from a pediatric to an adult CF center using a structured, individualized transition and transfer process was not associated with accelerated clinical deterioration., (© 2021 Wiley Periodicals LLC.)
- Published
- 2021
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25. A Comparative Study of the Adherent-Invasive Escherichia coli Population and Gut Microbiota of Healthy Vegans versus Omnivores.
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Veca R, O'Dea C, Burke J, Hatje E, Kuballa A, and Katouli M
- Abstract
Adherent-invasive Escherichia coli (AIEC) strains carry virulence genes (VGs) which are rarely found in strains other than E. coli . These strains are abundantly found in gut mucosa of patients with inflammatory bowel disease (IBD); however, it is not clear whether their prevalence in the gut is affected by the diet of the individual. Therefore, in this study, we compared the population structure of E. coli and the prevalence of AIEC as well as the composition of gut microbiota in fecal samples of healthy participants ( n = 61) on either a vegan ( n = 34) or omnivore ( n = 27) diet to determine whether diet is associated with the presence of AIEC. From each participant, 28 colonies of E. coli were typed using Random Amplified Polymorphic DNA (RAPD)-PCR. A representative of each common type within an individual was tested for the presence of six AIEC-associated VGs. Whole genomic DNA of the gut microbiota was also analyzed for its diversity profiles, utilizing the V5-V6 region of the16S rRNA gene sequence. There were no significant differences in the abundance and diversity of E. coli between the two diet groups. The occurrence of AIEC-associated VGs was also similar among the two groups. However, the diversity of fecal microbiota in vegans was generally higher than omnivores, with Prevotella and Bacteroides dominant in both groups. Whilst 88 microbial taxa were present in both diet groups, 28 taxa were unique to vegans, compared to seven unique taxa in the omnivores. Our results indicate that a vegan diet may not affect the number and diversity of E. coli populations and AIEC prevalence compared to omnivores. The dominance of Prevotella and Bacteroides among omnivores might be accounted for the effect of diet in these groups.
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- 2020
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26. How much does axillary ultrasound contribute in women undergoing breast-conserving surgery with no palpable axillary nodes?
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Preda T, McGrath R, Bingham J, Fawcett A, O'Dea C, Bochner M, Gill PG, and Kollias J
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- Cohort Studies, Female, Humans, Lymph Node Excision, Lymph Nodes diagnostic imaging, Lymph Nodes pathology, Lymph Nodes surgery, Neoplasm Staging, Sentinel Lymph Node Biopsy, Axilla diagnostic imaging, Axilla pathology, Breast Neoplasms diagnostic imaging, Breast Neoplasms pathology, Breast Neoplasms surgery, Lymphatic Metastasis diagnostic imaging, Mastectomy, Segmental
- Abstract
Background: The primary objective was evaluation of axillary ultrasound (AxUS) in preoperative staging of patients with invasive carcinoma undergoing breast-conserving surgery., Methods: This is a retrospective, observational cohort study of patients with clinically node-negative (cN0) biopsy-proven invasive breast carcinoma undergoing breast-conserving surgery between January 2011 and December 2014 who underwent AxUS with fine needle aspiration (FNA) biopsy of sonographically abnormal lymph nodes. Patient records were reviewed., Results: A total of 713 cases were analysed. Four hundred and thirty-three patients underwent formal preoperative AxUS; 100 underwent biopsy for abnormal findings. Of these, 32 had positive FNA biopsy result and underwent level II axillary dissection (axillary lymph node dissection (ALND)). Thirty were T1-2 tumours with AxUS scan/FNA demonstrating sensitivity of 25.2%, specificity of 100%, positive predictive value of 100% and negative predictive value of 76.6%. Forty-six patients had a positive sentinel lymph node (SLN) biopsy and axillary dissection. 34.8% of T1 tumours, 47.8% of T2 tumours and 100% of T3 tumours had further positive nodes. The average number of nodes involved per axilla was 1.8 for the T1 group, 4.1 for the T2 group and 4.6 in the T3 group. Macrometastases were a more common finding than micrometastases for all T stages undergoing ALND. A suspicious preoperative AxUS result was significantly associated with positive SLN. Other risk factors for positive SLN biopsy were oestrogen receptor positivity and lymphovascular invasion., Conclusion: AxUS identifies patients with high nodal burdens justifying immediate ALND. AxUS did not adversely affect women with histologically negative sentinel nodes. Three percent may have been overtreated., (© 2020 Royal Australasian College of Surgeons.)
- Published
- 2020
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27. Compositional and temporal stability of fecal taxon libraries for use with SourceTracker in sub-tropical catchments.
- Author
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O'Dea C, Zhang Q, Staley C, Masters N, Kuballa A, Fisher P, Veal C, Stratton H, Sadowsky MJ, Ahmed W, and Katouli M
- Subjects
- Animals, Australia, Environmental Monitoring, Feces, Humans, RNA, Ribosomal, 16S, Water Microbiology, Water Pollution
- Abstract
Characterization of microbial communities using high-throughput amplicon sequencing is an emerging approach for microbial source tracking of fecal pollution. This study used SourceTracker software to examine temporal and geographical variability of fecal bacterial community profiles to identify pollutant sources in three freshwater catchments in sub-tropical Australia. Fecal bacterial communities from 10 animal species, humans, and composite wastewater samples from six sewage treatment plants were characterized and compared to freshwater samples using Illumina amplicon sequencing of the V5-V6 regions of the 16S rRNA gene. Source contributions were calculated in SourceTracker using new fecal taxon libraries as well as previously generated libraries to determine the effects of geographic and temporal variability on source assignments. SourceTracker determined 16S rRNA bacterial communites within freshwater samples, shared taxonomic similarities to that of wastewater at low levels (typically <3%). SourceTraker also predicted occasional fecal detection of deer and flying fox sources in the water samples. No significant differences in source contributions were observed within sequences from current and previously characterized fecal samples (P ≥ 0.107). However, significant differences were observed between previously characterized and newly characterized source communities (ANOSIM P ≤ 0.001), which shared <15% community composition. Results suggest temporal instability of fecal taxon libraries among tested sources and highlight continual evaluation of community-based MST using confirmatory qPCR analyses of marker genes., (Crown Copyright © 2019. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2019
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28. Ethylene-Bridged Hexadentate Bis(amidines) and Bis(amidinates) with Variable Binding Sites.
- Author
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O'Dea C, Ugarte Trejo O, Arras J, Ehnbom A, Bhuvanesh N, and Stollenz M
- Abstract
Hexadentate bis(amidines) form versatile networks of hydrogen bonds both in solid state and solution, as revealed by X-ray crystallography, IR, and NMR spectroscopy. Moreover, the corresponding bis(amidinates) produce blue and green emissions in THF solution. Tethered tetradentate bis(amidines) have emerged in coordination chemistry, enantioselective catalysis, as building blocks for polyfunctional heterocycles, and in photoluminescent materials. The next generation of flexible bis(amidine)/bis(amidinate) platforms with up to six N -donor sites has now been established.
- Published
- 2019
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29. Detection of a range of genetically diverse chlamydiae in Australian domesticated and wild ungulates.
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Jelocnik M, Taylor-Brown A, O'Dea C, Anstey S, Bommana S, Masters N, Katouli M, Jenkins C, and Polkinghorne A
- Subjects
- Animals, Animals, Wild, Australia epidemiology, Cattle, Chlamydia classification, Chlamydia Infections epidemiology, Chlamydia Infections microbiology, Deer, Horses, Humans, Livestock, Phylogeny, RNA, Ribosomal, 16S genetics, Sheep, Swine, Chlamydia genetics, Chlamydia Infections veterinary, Genetic Variation
- Abstract
Chlamydiae are globally widespread obligate intracellular bacteria, which several species are a well-recognized threat to human and animal health. In Australia, the most successful chlamydial species are the infamous koala pathogen C. pecorum, and C. psittaci, an emerging pathogen associated with zoonotic events. Little is known about infections caused by other chlamydial organisms in Australian livestock or wildlife. Considering that these hosts can be encountered by humans at the animal/human interface, in this study, we investigated genetic diversity of chlamydial organisms infecting Australian domesticated and wild ungulates. A total of 185 samples from 129 domesticated (cattle, horses, sheep, and pigs) and 29 wild (deer) ungulate hosts were screened with C. pecorum and C. psittaci species-specific assays, followed by a screen with pan-Chlamydiales assay. Overall, chlamydial DNA was detected in 120/185 (65%) samples, including all ungulate hosts. Species-specific assays further revealed that C. pecorum and C. psittaci DNA were detected in 27% (50/185) and 6% (11/185) of the samples, respectively, however from domesticated hosts only. A total of 46 "signature" 16S rRNA sequences were successfully resolved by sequencing and were used for phylogenetic analyses. Sequence analyses revealed that genetically diverse novel as well as traditional chlamydial organisms infect an expanded range of ungulate hosts in Australia. Detection of the C. psittaci and C. pecorum in livestock, and novel taxa infecting horses and deer raises questions about the genetic make-up and pathogenic potential of these organisms, but also concerns about risks of spill-over between livestock, humans, and native wildlife., (© 2019 Blackwell Verlag GmbH.)
- Published
- 2019
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30. Marker genes of fecal indicator bacteria and potential pathogens in animal feces in subtropical catchments.
- Author
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Ahmed W, O'Dea C, Masters N, Kuballa A, Marinoni O, and Katouli M
- Subjects
- Animals, Animals, Domestic microbiology, Animals, Wild microbiology, Chickens microbiology, Cryptosporidium parvum isolation & purification, Giardia lamblia isolation & purification, Mammals microbiology, Queensland, Real-Time Polymerase Chain Reaction veterinary, Risk Assessment, Bacteria isolation & purification, Environmental Monitoring, Feces microbiology, Public Health, Water Microbiology
- Abstract
We investigated the abundance of marker genes of two fecal indicator bacteria (FIB) and eight potential pathogens in fecal samples of humans (n = 14) and 10 domestic and native wild animals (n = 134). For each target animal, between 10 and 14 individual fecal samples were collected (n = 148 individual fecal samples in total). The abundance of FIB and potential pathogens within each sample was determined using quantitative PCR (qPCR) assays. All animals tested were positive for Escherichia coli (EC) and the concentrations ranged from 6.13 (flying fox) to 8.87 (chicken) log
10 GC/g of feces. These values for Enterococcus spp. (ENT) were 5.25 log10 GC/g for flying fox and 8.12 log10 GC/g of feces for chicken. Moderate correlations were observed between EC with P. aeruginosa, EC O157 and Cryptosporidium parvum, whereas weak correlations were observed between EC and Salmonella spp. and Giardia lamblia, Mycobacterium avium complex (MAC) and Campylobacter spp. The prevalence of MAC and P. aeruginosa were low in dog (14.3% each) and moderate (57.2%, MAC; 42.9% P. aeruginosa) in Eastern grey kangaroo fecal samples. Cryptosporidium parvum was detected in one cattle and one human fecal sample, while G. lamblia was detected in one dog, one flying fox, and one pig fecal samples. Among the eight potential pathogens tested, five pathogens were detected in chicken and dog fecal samples. The remaining animal species contained up to three potential pathogens in their feces. The data generated in this study may aid in the calculation of pathogen loads in the environment, and hence to assess the risks from human and animal fecal contamination of source waters., (Crown Copyright © 2018. Published by Elsevier B.V. All rights reserved.)- Published
- 2019
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31. Invasion and translocation of uropathogenic Escherichia coli isolated from urosepsis and patients with community-acquired urinary tract infection.
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Owrangi B, Masters N, Kuballa A, O'Dea C, Vollmerhausen TL, and Katouli M
- Subjects
- Adult, Aged, Aged, 80 and over, Bacterial Adhesion genetics, Bacterial Load, Cell Line, Female, Humans, Male, Middle Aged, Uropathogenic Escherichia coli isolation & purification, Uropathogenic Escherichia coli pathogenicity, Virulence genetics, Virulence Factors genetics, Community-Acquired Infections microbiology, Escherichia coli Infections microbiology, Escherichia coli Proteins genetics, Protein Biosynthesis, Sepsis microbiology, Urinary Tract Infections microbiology, Uropathogenic Escherichia coli genetics
- Abstract
Uropathogenic Escherichia coli (UPEC) strains are found in high numbers in the gut of patients with urinary tract infections (UTIs). We hypothesised that in hospitalised patients, UPEC strains might translocate from the gut to the blood stream and that this could be due to the presence of virulence genes (VGs) that are not commonly found in UPEC strains that cause UTI only. To test this, E. coli strains representing 75 dominant clonal groups of UPEC isolated from the blood of hospitalised patients with UTI (urosepsis) (n = 22), hospital-acquired (HA) UTI without blood infection (n = 24) and strains isolated from patients with community-acquired (CA)-UTIs (n = 29) were tested for their adhesion to, invasion and translocation through Caco-2 cells, in addition to the presence of 34 VGs associated with UPEC. Although there were no differences in the rate and degree of translocation among the groups, urosepsis and HA-UTI strains showed significantly higher abilities to adhere (P = 0.0095 and P < 0.0001 respectively) and invade Caco-2 cells than CA-UTI isolates (P = 0.0044, P = 0.0048 respectively). Urosepsis strains also carried significantly more VGs than strains isolated from patients with only UTI and/or CA-UTI isolates. In contrast, the antigen 43 allele RS218 was found more commonly among CA-UTI strains than in the other two groups. These data indicate that UPEC strains, irrespective of their source, are capable of translocating through gut epithelium. However, urosepsis and HA-UTI strains have a much better ability to interact with gut epithelia and have a greater virulence potential than CA-UPEC, which allows them to cause blood infection.
- Published
- 2018
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32. Comparison between virulence characteristics of dominant and non-dominant Escherichia coli strains of the gut and their interaction with Caco-2 cells.
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Owrangi B, Masters N, Vollmerhausen TL, O'Dea C, Kuballa A, and Katouli M
- Subjects
- ATP-Binding Cassette Transporters genetics, Adhesins, Escherichia coli genetics, Bacterial Adhesion, Bacterial Translocation, Biofilms, Caco-2 Cells, Epithelial Cells microbiology, Escherichia coli classification, Escherichia coli genetics, Escherichia coli isolation & purification, Escherichia coli Proteins genetics, Feces microbiology, Female, Fimbriae Proteins genetics, Host-Pathogen Interactions, Humans, Male, Porins genetics, Prevalence, Sex Factors, Virulence genetics, Escherichia coli pathogenicity, Escherichia coli Infections microbiology, Gastrointestinal Tract microbiology, Intestinal Diseases microbiology
- Abstract
Escherichia coli strains are normal inhabitants of the gut and are normally found in the faeces of the host at different population sizes. We characterised faecal E. coli of 45 healthy male (n = 17) and female (n = 28) volunteers by testing 28 isolates from each individual. These isolates were typed and divided into dominant (if constituted >50% of the population tested) and non-dominant types in each individual. Representative strains of each dominant and non-dominant type were tested for their virulence gene profiles, their ability to form biofilm, adhere to, invade and translocate through a gut epithelial cell line (Caco-2 cells). Strains belonging to dominant types adhered significantly more to Caco-2 cells than non-dominant strains (5.7 ± 0.3 versus 4.3.± 0.13 CFU/cell mean ± SEM, P = 0.0003). They also invaded (135 ± 6 versus 63 ± 13 CFU) and translocated through Caco-2 cells (84 ± 5 versus 32 ± 9 CFU) significantly more than non-dominant strains (P < 0.0001 and P = 0.0002, respectively). Moreover, dominant strains showed the ability to form significantly more biofilm than non-dominant strains (1.1 ± 0.01 versus 0.5 ± 0.1 OD
600 , P < 0.0001). Majority (51%) of the strains belonged to phylogroup D followed by B2 (23%). Furthermore, out of 25 virulence genes tested, kpsMTII, papC and papG allele III were found to be significantly higher among dominant than non-dominant strains. Our results suggest that E. coli strains dominating the gut may have virulence properties that enable them to efficiently interact with the gut epithelium and translocate under predisposing conditions of the host., (Copyright © 2017 Elsevier Ltd. All rights reserved.)- Published
- 2017
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33. Discount rate heterogeneity among older households: a puzzle?
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Bozio A, Laroque G, and O'Dea C
- Abstract
We put forward a method for estimating discount rates using wealth and income data. We build consumption from these data using the budget constraint. Consumption transitions yield discount rates by household groups. Applying this technique to a sample of older households, we find a similar distribution to those previously estimated using field data, though with a much lower mean than those found using experiments. Surprisingly, among this older population, patience is negatively correlated with education and numeracy. This goes against the positive correlation found for younger populations in experiments and some field studies. We discuss potential explanations for this result., Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest., (© The Author(s) 2016.)
- Published
- 2017
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34. Goal Fluency, Pessimism and Disengagement in Depression.
- Author
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Dickson JM, Moberly NJ, O'Dea C, and Field M
- Subjects
- Adolescent, Adult, Aged, Case-Control Studies, Depression epidemiology, Female, Humans, Internal-External Control, Middle Aged, Young Adult, Achievement, Depression psychology, Goals, Motivation, Pessimism psychology
- Abstract
Despite the development of prominent theoretical models of goal motivation and its importance in daily life, research has rarely examined goal dysregulation processes in clinical depression. Here we aimed to investigate problematic aspects of goal regulation in clinically depressed adults, relative to controls. Depressed participants (n = 42) were recruited from two Improving Access to Psychological Therapy clinics in north-west England. Control participants (n = 51) were recruited from the same region. Participants generated personal approach goals (e.g., improve my marathon time) and avoidance goals (e.g., avoid getting upset over little things) and completed self-report measures of goal attainment likelihood and depressive symptoms. Participants also completed a measure of ease of disengagement from unattainable goals and re-engagement with new goals. Compared to controls, depressed participants reported fewer approach goals (but not more avoidance goals), rated their approach goal (rewarding) outcomes as less likely to happen and avoidance goal (threatening) outcomes as more likely to happen. Depressed participants also reported greater ease of disengagement from unattainable goals and more difficulty re-engaging with new goals than controls. Our findings extend current knowledge of the psychopathology of depression from a goal regulation perspective, suggesting that pessimism around goal pursuit accompanies fewer approach goal pursuits and a general tendency to disengage when difficulties are encountered., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2016
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35. Cold, clumpy accretion onto an active supermassive black hole.
- Author
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Tremblay GR, Oonk JB, Combes F, Salomé P, O'Dea C, Baum SA, Voit GM, Donahue M, McNamara BR, Davis TA, McDonald MA, Edge AC, Clarke TE, Galván-Madrid R, Bremer MN, Edwards LO, Fabian AC, Hamer S, Li Y, Maury A, Russell HR, Quillen AC, Urry CM, Sanders JS, and Wise MW
- Abstract
Supermassive black holes in galaxy centres can grow by the accretion of gas, liberating energy that might regulate star formation on galaxy-wide scales. The nature of the gaseous fuel reservoirs that power black hole growth is nevertheless largely unconstrained by observations, and is instead routinely simplified as a smooth, spherical inflow of very hot gas. Recent theory and simulations instead predict that accretion can be dominated by a stochastic, clumpy distribution of very cold molecular clouds--a departure from the 'hot mode' accretion model--although unambiguous observational support for this prediction remains elusive. Here we report observations that reveal a cold, clumpy accretion flow towards a supermassive black hole fuel reservoir in the nucleus of the Abell 2597 Brightest Cluster Galaxy (BCG), a nearby (redshift z = 0.0821) giant elliptical galaxy surrounded by a dense halo of hot plasma. Under the right conditions, thermal instabilities produce a rain of cold clouds that fall towards the galaxy's centre, sustaining star formation amid a kiloparsec-scale molecular nebula that is found at its core. The observations show that these cold clouds also fuel black hole accretion, revealing 'shadows' cast by the molecular clouds as they move inward at about 300 kilometres per second towards the active supermassive black hole, which serves as a bright backlight. Corroborating evidence from prior observations of warmer atomic gas at extremely high spatial resolution, along with simple arguments based on geometry and probability, indicate that these clouds are within the innermost hundred parsecs of the black hole, and falling closer towards it.
- Published
- 2016
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36. Community partnered projects: residents engaging with community health centers to improve care.
- Author
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Moushey E, Shomo A, Elder N, O'Dea C, and Rahner D
- Subjects
- Adult, Curriculum, Directive Counseling, Female, Focus Groups, Humans, Internship and Residency methods, Male, Medical Audit, Middle Aged, Needs Assessment, Patient Education as Topic, Program Development, Program Evaluation, Smoking, Smoking Cessation, Community Health Centers standards, Family Practice education, Internship and Residency organization & administration, Medical Records standards, Quality Improvement organization & administration
- Abstract
Background: Important residency curricular elements, including scholarship, quality improvement (QI), and community health, often exist as independent components. We developed a curriculum to train residents to become community-responsive physicians that included longitudinal care at a community health center (CHC) with a unique community-partnered project (CPP). We evaluated outcomes of one CPP and delineated challenges in implementing the curriculum., Methods: After performing a needs assessment, the resident-CHC team designed a QI intervention to improve documentation of smoking status and cessation counseling. A chart review of 100 random patients assessed pre- and post-intervention documentation. Patient focus groups were held to guide the development of the final intervention, which included medical assistant (MA) education, appropriate patient education materials, and a visual communication system for MAs and providers. Curriculum evaluation via interviews with residency and community partners was done periodically throughout the 2-year process., Results: Focus group participants saw clinicians as a resource for quitting but did not want to talk about quitting at every visit. We reviewed 317 patient visits pre-QI intervention and 191 post-QI intervention. There were no significant changes in the percent of visits where smoking status was documented (82% versus 79%); however, smoking cessation counseling during office visits increased significantly (19% to 54%). Key challenges included academic-community communication and resident scheduling and availability., Conclusions: In this CPP curriculum, residents made a difference in practice outcomes, and ongoing attention to challenges assisted with the project's success, possibly enhancing residents' likelihood of incorporating QI and principles of community health into their future careers.
- Published
- 2014
37. The Global Lung Initiative 2012 reference values reflect contemporary Australasian spirometry.
- Author
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Hall GL, Thompson BR, Stanojevic S, Abramson MJ, Beasley R, Coates A, Dent A, Eckert B, James A, Filsell S, Musk AW, Nolan G, Dixon B, O'Dea C, Savage J, Stocks J, and Swanney MP
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Australia, Child, Child, Preschool, Female, Humans, Male, Middle Aged, Reference Values, White People, Young Adult, Lung physiology, Spirometry methods
- Abstract
We aimed to ascertain the fit of the European Respiratory Society Global Lung Initiative 2012 reference ranges to contemporary Australasian spirometric data. Z-scores for spirometry from Caucasian subjects aged 4-80 years were calculated. The mean (SD) Z-scores were 0.23 (1.00) for forced expirtory volume in 1 s (FEV(1)), 0.23 (1.00) for forced vital capacity (FVC), -0.03 (0.87) for FEV(1)/FVC and 0.07 (0.95) for forced expiratory flows between 25% and 75% of FVC. These results support the use of the Global Lung Initiative 2012 reference ranges to interpret spirometry in Caucasian Australasians., (© 2012 The Authors. Respirology © 2012 Asian Pacific Society of Respirology.)
- Published
- 2012
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38. Cognitive function, numeracy and retirement saving trajectories.
- Author
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Banks J, O'Dea C, and Oldfield Z
- Abstract
This paper examines the extent to which cognitive abilities relate to differences in trajectories for key economic outcomes as individuals move towards and through their retirement. We look at whether differences in baseline numeracy (measured in the English Longitudinal Study of Ageing in 2002) and broader cognitive ability predict the subsequent trajectories of outcomes such as wealth, retirement income and key dimensions of retirement expectations. Those with lower numeracy are shown to have different wealth trajectories both pre- and post-retirement than their more numerate counterparts, but the distributions of retirement expectations and net replacement rates are similar across numeracy groups.
- Published
- 2011
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39. The all-age spirometry reference ranges reflect contemporary Australasian spirometry.
- Author
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Thompson BR, Stanojevic S, Abramson MJ, Beasley R, Coates A, Dent A, Eckert B, James A, Filsell S, Musk AW, Nolan G, Dixon B, O'Dea C, Savage J, Stocks J, Swanney MP, and Hall GL
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Australia, Child, Child, Preschool, Female, Humans, Lung physiology, Male, Middle Aged, New Zealand, Reference Values, White People, Young Adult, Spirometry standards
- Abstract
Background and Objective: Advances in statistical modelling have allowed the creation of smoothly changing spirometry reference ranges that apply across a wide age range and better define the lower limit of normal. The objective of this study was to assess the agreement of the Stanojevic 2009 all-age reference ranges to contemporary lung function data to verify the appropriateness of this reference for clinical use in Australia and New Zealand., Methods: Spirometry data from healthy Caucasians measured between 2000-2009 in Australia and New Zealand were collected. Z-scores were calculated for the standard spirometry outcomes based on the all-age reference ranges., Results: Spirometry from 2066 subjects aged 4-80 years (55% male) from 14 centres were eligible. Statistically, the collated contemporary dataset differed from the all-age reference ranges, but these differences were relatively small and clinically irrelevant representing differences of approximately 3% predicted. Significant differences were also observed between some centres and equipment, potentially indicating varying influence of equipment or subject selection., Conclusions: Spirometry from contemporary Australasian healthy subjects fits the all-age reference ranges well. While the current study supports the use of the all-age reference ranges, the between-centre differences highlight the need for spirometry to be used in conjunction with other clinical findings., (© 2011 The Authors. Respirology © 2011 Asian Pacific Society of Respirology.)
- Published
- 2011
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40. Linaclotide improves abdominal pain and bowel habits in a phase IIb study of patients with irritable bowel syndrome with constipation.
- Author
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Johnston JM, Kurtz CB, Macdougall JE, Lavins BJ, Currie MG, Fitch DA, O'Dea C, Baird M, and Lembo AJ
- Subjects
- Administration, Oral, Adolescent, Adult, Aged, Diarrhea chemically induced, Female, Guanylate Cyclase metabolism, Humans, Male, Middle Aged, Peptides adverse effects, Young Adult, Abdominal Pain drug therapy, Constipation drug therapy, Defecation drug effects, Irritable Bowel Syndrome drug therapy, Peptides administration & dosage
- Abstract
Background & Aims: Linaclotide, a minimally absorbed, 14-amino acid peptide agonist of guanylate cyclase-C, has shown benefit in a proof-of-concept study for the treatment of patients with irritable bowel syndrome (IBS) with constipation (IBS-C). We assessed the efficacy and safety of linaclotide at a daily dose range of 75-600 μg in IBS-C., Methods: We performed a randomized, double-blind, multicenter, placebo-controlled study of 420 patients with IBS-C given oral linaclotide at doses of 75, 150, 300, or 600 μg or placebo once daily for 12 weeks. End points included change from baseline in daily bowel habits, daily abdominal symptoms, and weekly global assessments, in addition to responder criteria., Results: All doses of linaclotide significantly improved bowel habits, including frequency of spontaneous bowel movements and complete spontaneous bowel movements (primary end point), severity of straining, and stool consistency. Abdominal pain was significantly reduced from baseline, compared with placebo; mean changes in abdominal pain (assessed on a 5-point scale) from baseline were -0.71, -0.71, -0.90, and -0.86 for linaclotide doses of 75, 150, 300, and 600 μg, respectively, compared with -0.49 for placebo. Likewise, most doses of linaclotide significantly improved other abdominal symptoms, including discomfort and bloating, and global measures of IBS-C compared with placebo. Effects were observed within the first week and were sustained throughout 12 weeks of treatment. Except for diarrhea, the incidence of adverse events was similar between placebo and linaclotide groups., Conclusions: Linaclotide, across a wide range of doses, significantly improved symptoms of IBS-C, including abdominal pain and bowel symptoms. Diarrhea was the only dose-dependent adverse event and was usually of mild or moderate severity., (Copyright © 2010 AGA Institute. Published by Elsevier Inc. All rights reserved.)
- Published
- 2010
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41. Anti-CD6-blocked ricin: an anti-pan T-cell immunotoxin.
- Author
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Collinson AR, Lambert JM, Liu Y, O'Dea C, Shah SA, Rasmussen RA, and Goldmacher VS
- Subjects
- Animals, Antibodies, Monoclonal metabolism, Antibodies, Monoclonal pharmacology, Antigen-Antibody Reactions, Antigens, CD immunology, Antigens, CD metabolism, Antigens, Differentiation, T-Lymphocyte immunology, Antigens, Differentiation, T-Lymphocyte metabolism, Cell Line, Cytotoxicity, Immunologic drug effects, Humans, Immunotoxins toxicity, In Vitro Techniques, Kinetics, Lethal Dose 50, Mice, Ricin antagonists & inhibitors, Ricin toxicity, Immunotoxins pharmacology, Ricin pharmacology, T-Lymphocytes drug effects, T-Lymphocytes immunology
- Abstract
We report the development of a potent anti-pan T-cell immunotoxin capable of killing cells in an antigen dependent manner. The immunotoxin is composed of a high affinity anti-CD6 antibody (IgG2a, Kd = 1.3 x 10(-11) M) conjugated to blocked ricin that is a chemically modified ricin molecule wherein the lectin binding sites of the B-chain have been blocked by covalent attachment of affinity ligands. Conjugation of blocked ricin to the antibody has minimal effect on the apparent affinity of the antibody and no effect on the ribosome-inactivating activity of the ricin A-chain moiety. Anti-CD6-blocked ricin is a specific and highly toxic immunoconjugate killing the antigen-positive Molt-4 cell line with an IC37 of 4 x 10(-12) M after a 24 h exposure of cells to the immunotoxin. Nonspecific cytotoxicity of anti-CD6-blocked ricin for the antigen-negative Namalwa cell line was more than 750-fold lower with an IC37 > 3 x 10(-9) M. The cytotoxicity of anti-CD6-blocked ricin is dependent on the length of the incubation of cells with the conjugate ranging from an IC37 of 1.5 x 10(-11) M leaving a surviving fraction of Molt-4 cells of 0.03 after a 2.5 h exposure to an IC37 of 5 x 10(-13) M and leaving a surviving fraction of 3 x 10(-6) after a continuous (3 weeks) exposure. Anti-CD6-blocked ricin is also capable of killing CD6 positive cells in human peripheral blood lymphocyte populations. Systemic toxicity of anti-CD6-blocked ricin in mice is similar to the toxicity of other immunotoxins containing blocked ricin that were found to be tolerated well by patients. An application of this immunoconjugate for the prevention and treatment of graft versus host disease or tissue graft rejection is suggested.
- Published
- 1994
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42. Neurodevelopmental and medical status of low-birthweight survivors of bronchopulmonary dysplasia at 10 to 12 years of age.
- Author
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Vohr BR, Coll CG, Lobato D, Yunis KA, O'Dea C, and Oh W
- Subjects
- Achievement, Brain physiopathology, Brain Damage, Chronic diagnosis, Bronchopulmonary Dysplasia complications, Child, Developmental Disabilities diagnosis, Female, Follow-Up Studies, Humans, Infant, Newborn, Learning Disabilities diagnosis, Learning Disabilities physiopathology, Male, Risk Factors, Wechsler Scales, Brain Damage, Chronic physiopathology, Bronchopulmonary Dysplasia physiopathology, Developmental Disabilities physiopathology, Infant, Low Birth Weight physiology, Neurologic Examination, Neuropsychological Tests
- Abstract
Thirty low-birthweight (less than 1500g) infants (15 with bronchopulmonary dysplasia (BPD), and 15 controls less than or equal to 5 days O2) and 15 fullterm controls were evaluated at 10 to 12 years of age. BPD children weighted less than fullterm children and had smaller head circumferences than either preterm or fullterm controls. They also had significantly more neurological abnormality than both control groups. BPD children and preterm controls had lower WISC-R arithmetic scores and lower Beery VMI scores, as well as greater need of resources and special education compared with fullterm controls. BPD survivors at 10 to 12 years of age continue to manifest sequelae related to their early pulmonary disease.
- Published
- 1991
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43. Behavioral changes correlated with brain-stem auditory evoked responses in term infants with moderate hyperbilirubinemia.
- Author
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Vohr BR, Karp D, O'Dea C, Darrow D, Coll CG, Lester BM, Brown L, Oh W, and Cashore W
- Subjects
- Arousal physiology, Humans, Orientation physiology, Reaction Time physiology, Brain Stem physiology, Evoked Potentials, Auditory physiology, Infant, Newborn psychology, Jaundice, Neonatal psychology
- Abstract
The purpose of this study was to test the hypotheses that newborn infants with moderate serum bilirubin concentrations have depressed Brazelton scores and increased brain-stem conduction time and that serum bilirubin levels correlate with Brazelton behavior scores and brain-stem auditory evoked response changes. Fifty term infants who were enrolled into either a low serum bilirubin group (less than 8 mg/dl) or a moderate serum bilirubin group (10 to 20 mg/dl) were tested with the Brazelton Neonatal Behavioral Assessment Scale and a brain-stem auditory evoked response test. Partial correlation analysis controlling for phototherapy revealed that increased bilirubin concentration correlated negatively with the Brazelton orientation and with state range clusters and individual Brazelton test items that involve auditory processing. Increased bilirubin concentration correlated with an increased latency of brain-stem auditory evoked response wave 4, 5. An increased interpeak 1-5 (brain-stem conduction time) correlated with the decreased animate visual and auditory item. We conclude that moderate hyperbilirubinemia in term infants affects both infant behavior, as measured by specific components of the Brazelton test, and brain-stem conduction time, as measured by the brain-stem auditory evoked response test.
- Published
- 1990
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44. Abnormal brain-stem function (brain-stem auditory evoked response) correlates with acoustic cry features in term infants with hyperbilirubinemia.
- Author
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Vohr BR, Lester B, Rapisardi G, O'Dea C, Brown L, Peucker M, Cashore W, and Oh W
- Subjects
- Evoked Potentials, Auditory, Female, Humans, Infant, Newborn, Male, Phonation, Brain Stem physiopathology, Crying physiology, Jaundice, Neonatal physiopathology
- Abstract
We hypothesized that changes in brain-stem auditory evoked responses related to bilirubin would be associated with changes in cry because of the anatomic proximity in the brain stem of cranial nerves 8 (auditory) and 9 to 12 (vagal complex, which controls cry). Brain-stem auditory evoked responses and computerized cry analysis were used to study the concurrent effects of moderate hyperbilirubinemia on auditory function and cry. Fifty term infants were divided equally into two groups on the basis of serum bilirubin concentrations: low (less than 8 mg/dl; 136) mumol/L and moderate (10 to 20 mg/dl, 170 to 342 mumol/L). Forty-three infants had successful tracings of brain-stem auditory evoked responses recorded with a Cadwell model 5200A evoked response unit during two successive trials, and a cry recording of each infant was analyzed by computer. The moderate serum bilirubin group had an increase in percent cry phonation (p less than 0.02) and an increase in the variability of the first formant (p less than 0.04) in comparison with the low serum bilirubin group. Serum bilirubin values correlated positively with brain-stem conduction time (r = 0.36, p less than 0.01), percent phonation (r = 0.42, p less than 0.004), and variability of the first formant (r = 0.39, p less than 0.02). Percent phonation, the voiced component produced by increased neural control, correlated with the interpeak of waves latencies I to III (r = 0.32, p less than 0.03) and brain-stem conduction time (wave I to V) (r = 0.35, p less than 0.01). We conclude that hyperbilirubinemia affects adjoining areas of the brain stem that control hearing and cry production.
- Published
- 1989
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