1
|
Cendoma P, Hearld KR, Upadhye D, Landry RJ, Landry A. Service mix and financial performance in rural hospitals: A contingency theory perspective. Health Care Manage Rev 2024; 49:220-228. [PMID: 38775732 DOI: 10.1097/hmr.0000000000000407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
BACKGROUND Rural hospitals are increasingly at risk of closure. Closure reduces the availability of hospital care in rural areas, resulting in a disparity in health between rural and urban citizens, and it has broader economic impacts on rural communities as rural hospitals are often large employers and are vital to recruiting new businesses to a community. To combat the risk of closure, rural hospitals have sought partnerships to bolster financial performance, which often results in a closure of services valuable to the community, such as obstetrics and certain diagnostic services, which are viewed as unprofitable. This can lead to poor health outcomes as community members are unable to access care in these areas. PURPOSE In this article, we explore rural hospital service offerings and financial performance, with an aim to illuminate if specific service offerings are associated with positive financial performance in a rural setting. METHODS Our study used hospital organization data, as well as county-level demographics with periods of analysis from 2015 and 2019. We employed a pooled cross-sectional regression analysis with robust standard errors examining the association between total margin and service lines among rural hospitals in the United States. RESULTS The findings suggest that some services deemed unprofitable in urban and suburban hospital settings-such as obstetrics and drug/alcohol rehabilitation-are associated with higher margins in rural hospitals. Other unprofitable service lines-such as psychiatry and long-term care-are associated with lower margins in rural hospitals. CONCLUSION Our results suggest the need of rural hospitals to choose services that align with environmental circumstances to maximize financial performance. PRACTICE IMPLICATION Hospital administrators in rural settings need to take a nuanced look at their environmental and organizational specifics when deciding upon the service mix. Generalizations regarding profitability should be avoided to maximize financial performance.
Collapse
|
2
|
Coley AA, Landry A, van den Hoogen RJ, McNutt DD. Generalized teleparallel de Sitter geometries. Eur Phys J C Part Fields 2023; 83:977. [PMID: 37915991 PMCID: PMC10615945 DOI: 10.1140/epjc/s10052-023-12150-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/14/2023] [Indexed: 11/03/2023]
Abstract
Theories of gravity based on teleparallel geometries are characterized by the torsion, which is a function of the coframe, derivatives of the coframe, and a zero curvature and metric compatible spin-connection. The appropriate notion of a symmetry in a teleparallel geometry is that of an affine symmetry. Due to the importance of the de Sitter geometry and Einstein spaces within General Relativity, we shall describe teleparallel de Sitter geometries and discuss their possible generalizations. In particular, we shall analyse a class of Einstein teleparallel geometries which have a 4-dimensional Lie algebra of affine symmetries, and display two one-parameter families of explicit exact solutions.
Collapse
Affiliation(s)
- A. A. Coley
- Department of Mathematics and Statistics, Dalhousie University, Halifax, NS B3H 3J5 Canada
| | - A. Landry
- Department of Mathematics and Statistics, Dalhousie University, Halifax, NS B3H 3J5 Canada
| | - R. J. van den Hoogen
- Department of Mathematics and Statistics, St. Francis Xavier University, Antigonish, NS B2G 2W5 Canada
| | - D. D. McNutt
- Department of Mathematics and Statistics, UiT: The Arctic University of Norway, 9037 Tromso, Norway
| |
Collapse
|
3
|
Landry A, Setser J, Montgomery A, Albritton L. An Evaluation of the Suitability of Food Provided through the Arkansas Foodbank Backpack Program. J Acad Nutr Diet 2022. [DOI: 10.1016/j.jand.2022.08.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
4
|
Landry A, Donoway H, Rofkahr R, Valev V, Albritton L. An Evaluation of the Arkansas Foodbank Backpack Program: A Mixed Methods Study. J Acad Nutr Diet 2022. [DOI: 10.1016/j.jand.2022.08.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
Lord J, Ray M, Landry A, Lee H, Ivankova N, Herbey I, Weech-Maldonado R. Exploring the Role of Contextual Factors in Medicaid Nursing Homes' Performance: A Qualitative Perspective. Innov Aging 2021. [PMCID: PMC8679435 DOI: 10.1093/geroni/igab046.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
This study explored the role of tested contextual factors (structural, market, and management) in high Medicaid (under resourced) nursing homes performance. Four nursing homes in geographically diverse states were purposefully selected for site visits based on high and low performance (quality/ profitability) indicators. Eight nursing home administrators and directors of nursing, and twenty-one nursing staff (RNs, LPNs, and CNAs) and providers of support services were interviewed. Data were analyzed using an inductive thematic approach with NVivo 12 Plus. Within and across case analysis was used to compare participants’ perspectives across nursing homes and across administrators and staff. Several themes provide insight into varied influences of contextual factors on these nursing homes’ performance: focus on quality care, team-based approach, community support and engagement, and staffing retention. Providing quality care to residents was strategic priority in all facilities, which was enhanced by an adopted team-based leadership approach, open-door policy and home-like atmosphere. Community reputation and availability of local training opportunities for CNAs affected nursing staffing which some facilities addressed using creative retention strategies. These research findings will facilitate interventions, such as leadership training and organizational development activities, aimed at improving the performance of low performing facilities in terms of lower costs and better quality.
Collapse
Affiliation(s)
- Justin Lord
- Louisiana State University at Shreveport, Bossier City, Louisiana, United States
| | - Midge Ray
- University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Amy Landry
- University of Alabama at Birmingham, Birmingham, Alabama, United States
| | | | - Nataliya Ivankova
- University of Alabama at Birmingham, Birmingham, Alabama, United States
| | | | | |
Collapse
|
6
|
|
7
|
Nwanaji-Enwerem JC, Landry A. Bedside Point-of-Care Ultrasound of an Adult with Diffuse Intermittent Abdominal Pain. Acute Med 2020; 19:49-51. [PMID: 32226958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A 29-year-old woman with a history of obesity status post Roux-en-Y gastric bypass greater than five years prior presented to the emergency department with four hours of sudden-onset stabbing left-sided abdominal pain associated with nausea and non-bloody emesis. She denied melaena and hematochezia, but did report two weeks of diarrhoea that was unchanged with this new onset abdominal pain.
Collapse
Affiliation(s)
| | - A Landry
- MD, MEd Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
8
|
Abstract
This article uses a modified Altman Z-score to predict financial distress within the nursing home industry. The modified Altman Z-score model uses multiple discriminant analysis (MDA) to examine multiple financial ratios simultaneously to assess a firm’s financial distress. This study utilized data from Medicare Cost Reports, LTCFocus, and the Area Resource File. Our sample consisted of 167 268 nursing home-year observations, or an average of 10 454 facilities per year, in the United States from 2000 through 2015. The independent financial variables, liquidity, profitability, efficiency, and net worth were entered stepwise into the MDA model. All of the financial variables, with the exception of net worth, significantly contributed to the discriminating power of the model. K-means clustering was used to classify the latent variable into 3 categorical groups: distressed, risk-of-financial distress, and healthy. These findings will provide policy makers and practitioners another tool to identify nursing homes that are at risk of financial distress.
Collapse
Affiliation(s)
| | - Amy Landry
- The University of Alabama at Birmingham, USA
| | | | | |
Collapse
|
9
|
Roofe N, Munroe D, Landry A. Validation of a Survey Assessing Diversity in Didactic Programs in Dietetics and Dietetic Internship Programs. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.08.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
10
|
Carroll K, Landry A. Frequency of Requests for Dietary Modifications in the School Breakfast Program and National School Lunch Program. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.08.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
11
|
Holstein H, Landry A, Mayo J. Effects of Tart Cherry Supplementation on Mid-Distance Runners. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.08.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
12
|
Lemacks J, Landry A, Wenzler P. Formative research to identify community partnerships and foster relationships for health promotion research in South Mississippi. Public Health 2018; 159:58-62. [PMID: 29609837 DOI: 10.1016/j.puhe.2018.01.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 09/08/2017] [Accepted: 01/23/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVES The purpose of this short communication is to describe the trust building and collaboration, fostering phases of a community-academic partnership between churches and academic researchers using a community-based participatory research approach. STUDY DESIGN AND METHODS An academic-community partnership with church leaders was initiated using survey administration and was further developed using focus groups. A coalition was developed, and it guided a subsequent focus group with church members. RESULTS Most churches surveyed did not have a health ministry in place but were agreeable that a variety of health topics were appropriate for the church setting. Church leaders felt that church members were key to engage in health programs in the church, whereas church members viewed pastoral support as important. Church leaders felt that working with a university brings credibility to their own health programs. CONCLUSION This early work provides a valuable example of how community collaborations may be initiated and developed using formative research methods, serving both community and research agendas.
Collapse
Affiliation(s)
- J Lemacks
- The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406-0001, USA.
| | - A Landry
- The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406-0001, USA.
| | - P Wenzler
- The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406-0001, USA.
| |
Collapse
|
13
|
Van H, Landry A. Building Teaching Kitchens Inside Health and Fitness Centers. J Acad Nutr Diet 2017. [DOI: 10.1016/j.jand.2017.06.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
14
|
Swift J, Landry A, Li S. A-66Gender Differences in Problem-Solving for Youth Diagnosed with Acute Lymphoblastic Leukemia. Arch Clin Neuropsychol 2016. [DOI: 10.1093/arclin/acw043.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
15
|
Swift J, Landry A, Li S. A-67The Role of Visuospatial Functioning in Assessment of Planning Using the Tower of London in Pediatric ALL. Arch Clin Neuropsychol 2016. [DOI: 10.1093/arclin/acw043.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
16
|
Li S, Skillicorn K, Alvarez G, Landry A. B-54Feasibility of Implementing Cogmed Within a University-Based Outpatient Training Clinic. Arch Clin Neuropsychol 2016. [DOI: 10.1093/arclin/acw043.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
17
|
Suha V, Landry A. Perceptions of Binge Eating Disorder: Differences between the Genders. J Acad Nutr Diet 2016. [DOI: 10.1016/j.jand.2016.06.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Landry A, Erwin C. PERSPECTIVES ON MULTIDISCIPLINARY TEAM PROCESSES AMONG HEALTHCARE EXECUTIVES: PROCESSES THAT FACILITATE TEAM EFFECTIVENESS. J Health Hum Serv Adm 2015; 38:350-380. [PMID: 26897991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Multidisciplinary teams (MDTs) are used in healthcare organizations to address both clinical and managerial functions. Despite their prevalence, little is known about how team processes work to facilitate effectiveness among MDT leadership teams. PURPOSE This study explores perceptions of MDT participation experienced by organizational leaders in healthcare organizations in the United States. METHODOLOGY/APPROACH A survey of American College of Healthcare Executives members was conducted to assess involvement and perceptions of MDTs among health care management professionals. Descriptive statistics, independent T-Tests and Chi-square analyses were used to examine participation in MDTs, perception of MDT processes, and the association of participation and perceived processes with employee and organizational characteristics. FINDINGS The survey yielded a sample comprised of 492 healthcare executive or executive-track employees. An overwhelming majority indicated participation in MDTs. The study identified team processes that could use improvement including communication, cooperation, and conflict resolution. PRACTICE IMPLICATIONS The study provides evidence that can help guide the development of training programs that focus on providing managerial leaders with strategies aimed at improving communication, coordination, and conflict resolution that will improve the effectiveness of MDT functioning in healthcare organizations.
Collapse
|
19
|
Danzy J, Landry A. Hub City Steps: Correlations between Dietary Fiber, Total Cholesterol and Body Weight. J Acad Nutr Diet 2013. [DOI: 10.1016/j.jand.2013.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Caroly S, Poussin N, Landry A. La passation de l’enquête Sumer par les médecins du travail : une question de posture professionnelle ? ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.03.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Caroly S, Coutarel F, Poussin N, Landry A, Davezies P, Bellemare M, Cholez C, Garrigou A, Chassaing K, Petit J, Baril-Gingras G, Prudhomme D. La prise en compte des liens santé-travail par les médecins du travail dans la consultation et les actions collectives. ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.03.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
22
|
Caroly S, Landry A, Cholez C, Davezies P, Bellemare M, Poussin N. Innovation in the occupational health physician profession requires the development of a work collective to improve the efficiency of MSD prevention. Work 2012; 41 Suppl 1:5-13. [PMID: 22316692 DOI: 10.3233/wor-2012-0128-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Given the ageing population of occupational health physicians and the deteriorating situation of employee health, reforms targeting the multi-disciplinary nature of occupational health are currently being drawn up. These are of great concern to doctors in terms of the future of occupational health, notably with regard to changing medical practices. The objective of this study is to explore the actual practices of occupational health physicians within the framework of MSD prevention in France. By analysing the activity of occupational health physicians, we could gain a better understanding of the coordination between those involved in OHS with the ultimate goal being to improve prevention. Based on an analysis of peer activity, this method made it possible to push beyond pre-constructed discourse. According to activity theories, it is through others that the history and controversies of a profession can be grasped and skills developed. The results produced by these collective discussions on activity analysis contributed to establish a collective point of view about the important aspects of their profession that need defending and the variations in professional genre in relation to the current reforms, notably.
Collapse
Affiliation(s)
- S Caroly
- Laboratory PACTE, University of Grenoble, Le Patio, Grenoble Cedex 09, France.
| | | | | | | | | | | |
Collapse
|
23
|
Byrd JD, Landry A. Distinguishing community benefits: tax exemption versus organizational legitimacy. J Healthc Manag 2012; 57:66-78. [PMID: 22397105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
US policymakers continue to call into question the tax-exempt status of hospitals. As nonprofit tax-exempt entities, hospitals are required by the Internal Revenue Service (IRS) to report the type and cost of community benefits they provide. Institutional theory indicates that organizations derive organizational legitimacy from conforming to the expectations of their environment. Expectations from the state and federal regulators (the IRS, state and local taxing authorities in particular) and the community require hospitals to provide community benefits to achieve legitimacy. This article examines community benefit through an institutional theory framework, which includes regulative (laws and regulation), normative (certification and accreditation), and cultural-cognitive (relationship with the community including the provision of community benefits) pillars. Considering a review of the results of a 2006 IRS study of tax-exempt hospitals, the authors propose a model of hospital community benefit behaviors that distinguishes community benefits between cost-quantifiable activities appropriate for justifying tax exemption and unquantifiable activities that only contribute to hospitals' legitimacy.
Collapse
|
24
|
Caroly S, Coutarel F, Landry A, Mary-Cheray I. Sustainable MSD prevention: management for continuous improvement between prevention and production. Ergonomic intervention in two assembly line companies. Appl Ergon 2010; 41:591-599. [PMID: 20097327 DOI: 10.1016/j.apergo.2009.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Revised: 09/10/2009] [Accepted: 12/22/2009] [Indexed: 05/28/2023]
Abstract
To increase output and meet customers' needs, companies have turned to the development of production management systems: Kaizen, one piece flow, Kanban, etc. The aim of such systems is to accelerate decisions, react to environmental issues and manage various productions. In the main, this type of management system has led to the continuous improvement of production performance. Consequently, such production management systems can have unexpected negative effects on operators' health and safety. Conversely, regulation and control systems focusing on work-related risks have obliged firms to implement health and safety management systems such as OHSAS 18001. The purpose of this type of system, also based on continuous improvement, is to reduce risks, facilitate work-related activities and identify solutions in terms of equipment and tools. However, the prevention actions introduced through health and safety systems often result in other unexpected and unwanted effects on production. This paper shows how companies can improve the way they are run by taking into account both types of management system.
Collapse
Affiliation(s)
- S Caroly
- Centre de Recherches en Innovations SocioTechniques et Organisations Industrielles, PACTE- Université Grenoble 2, UPMF, BP 47, 39 040 Grenoble Cedex 9, France.
| | | | | | | |
Collapse
|
25
|
Loignon C, Allison P, Landry A, Richard L, Brodeur JM, Bedos C. Providing humanistic care: dentists' experiences in deprived areas. J Dent Res 2010; 89:991-5. [PMID: 20525962 DOI: 10.1177/0022034510370822] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Communication barriers severely reduce the effectiveness of oral health care provision to people living in poverty. Our objective was to identify specific approaches and skills developed by dentists for more effective treatment of people living in poverty and addressing their needs. We conducted qualitative research based on in-depth interviews with eight dentists practicing in disadvantaged communities of Montreal, Canada. Analyses consisted of interview debriefing, transcript coding, and data interpretation. Results revealed that, over years of practice, these dentists had developed a five-faceted socio-humanistic approach that involved: (1) understanding patients' social context; (2) taking time and showing empathy; (3) avoiding moralistic attitudes; (4) overcoming social distances; and (5) favoring direct contact with patients. This approach is original, and, even though participants found it successful, it should be evaluated in terms of its impact for access to services and patients' experience of care.
Collapse
Affiliation(s)
- C Loignon
- Department of Family Medicine, Faculty of Medicine, Université de Sherbrooke, Complexe St-Charles, 1111, rue St-Charles Ouest, Tour Est, Suite 354, Longueuil, Québec, Canada, J4K 5G4.
| | | | | | | | | | | |
Collapse
|
26
|
Cholez C, Caroly S, Landry A. La pluridisciplinarité dans la santé au travail : comment construire la coopération ? ARCH MAL PROF ENVIRO 2010. [DOI: 10.1016/j.admp.2010.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
27
|
Pegon-Machat E, Tubert-Jeannin S, Loignon C, Landry A, Bedos C. Dentists’ experience with low-income patients benefiting from a public insurance program. Eur J Oral Sci 2009; 117:398-406. [DOI: 10.1111/j.1600-0722.2009.00643.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Adams JC, Seed B, Lu N, Landry A, Xavier RJ. Selective activation of nuclear factor kappa B in the cochlea by sensory and inflammatory stress. Neuroscience 2009; 160:530-9. [PMID: 19285117 DOI: 10.1016/j.neuroscience.2009.02.073] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 02/22/2009] [Accepted: 02/24/2009] [Indexed: 02/07/2023]
Abstract
Damage response pathways triggered by mechanical stress might reasonably be expected to be conserved throughout evolution. However, using a nuclear factor kappa B (NF-kappaB) reporter mouse we show here that this phylogenetically recent transcription factor plays a major role in the response to mechanosensory stress in the mammalian inner ear. The protective action of NF-kappaB is exerted in neither sensory nor non-sensory epithelial cells, but rather in connective tissue cells within the spiral ligament and spiral limbus. In the spiral ligament, predominantly type I fibrocytes are activated following noise exposure, whereas type II fibrocytes are activated following systemic inflammatory stress. Immune-mediated and acoustic trauma-mediated hearing loss syndromes in humans may in part result from the vulnerability of type II and type I fibrocytes to systemic inflammatory stress and acoustic trauma, respectively. Unexpected cell-specific and stress-specific NF-kappaB activation found in the inner ear in this in vivo study suggest that this approach may have wide applications in demonstrating similar specializations of stress responses in other tissues, including the brain.
Collapse
Affiliation(s)
- J C Adams
- Department of Otology and Laryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, 243 Charles Street, Boston, MA 02114, USA.
| | | | | | | | | |
Collapse
|
29
|
Marsault E, Hoveyda HR, Peterson ML, Gagnon R, Vézina M, Pinault J, Landry A, Saint-Louis C, Ouellet LG, Beauchemin S, Benakli K, Beaubien S, Brassard M, Wang Z, Champagne M, Galaud F, Fortin N, Fortin D, Plourde V, Ramaseshan M, Bhat S, Bilodeau F, Lonergan D, Lan R, Li S, Berthiaume G, Foucher L, Peng X, Dory Y, Deslongchamps P. High Throughput Solid Phase Parallel Synthesis of Macrocyclic Peptidomimetics. Advances in Experimental Medicine and Biology 2009; 611:15-6. [DOI: 10.1007/978-0-387-73657-0_7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
30
|
Zurakowski H, Gagnon A, Landry A, Layne MD, Sorisky A. Discoidin domain receptor 2 impairs insulin-stimulated insulin receptor substrate-1 tyrosine phosphorylation and glucose uptake in 3T3-L1 adipocytes. Horm Metab Res 2007; 39:575-81. [PMID: 17712722 DOI: 10.1055/s-2007-985132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Differentiation of preadipocytes into functional adipocytes depends on early proliferative events (mitotic clonal expansion) and extracellular matrix interactions. We report that discoidin domain receptor (DDR) 2, a novel adhesion receptor, is expressed in 3T3-L1 preadipocytes and is downregulated during the early phase of adipogenesis. DDR2 overexpression (DDR2-L1 preadipocytes) reduced subconfluent proliferation by 56% (p<0.001) and insulin-stimulated tyrosine phosphorylation of insulin receptor substrate (IRS)-1 by 34% (p<0.05). The mitotic clonal expansion phase of differentiating confluent DDR2-L1 preadipocytes was impaired by approximately 25% (p<0.05). Although induction of peroxisome proliferator-activated receptor gamma, fatty acid synthase, and adiponectin was not altered, the resulting adipocytes were 55% larger (p<0.05), and contained 66% more triacylglycerol (p<0.01). The induction of CCAAT/enhancer binding protein alpha was reduced by 37% (p<0.05), correlating with a similar reduction in insulin-stimulated IRS-1 tyrosine phosphorylation and glucose transport in DDR2-L1 adipocytes (decreases of 22% and 27%, respectively; p<0.05 for both). Our data show that DDR2 is expressed in adipose cells and that its overexpression leads to insulin resistance.
Collapse
Affiliation(s)
- H Zurakowski
- Department of Medicine, University of Ottawa, Ottawa Health Research Institute, Ottawa, ON K1Y 4E9 Canada, and Pulmonary Division, Brigham and Women's Hospital, Boston, MA, USA
| | | | | | | | | |
Collapse
|
31
|
Constant VA, Gagnon A, Landry A, Sorisky A. Macrophage-conditioned medium inhibits the differentiation of 3T3-L1 and human abdominal preadipocytes. Diabetologia 2006; 49:1402-11. [PMID: 16609875 DOI: 10.1007/s00125-006-0253-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Accepted: 01/23/2006] [Indexed: 10/24/2022]
Abstract
AIMS/HYPOTHESIS In obesity, a limited adipogenic capacity may promote adipocyte hypertrophy and increase the risk of insulin resistance and type 2 diabetes. Recent data indicate that macrophages reside within adipose tissue in obese rodents and humans. We hypothesised that secreted macrophage factors may inhibit adipogenesis. MATERIALS AND METHODS Conditioned media from cultured murine J774 or human THP-1 macrophages were collected, and added to either murine 3T3-L1 preadipocytes or human abdominal stromal preadipocytes from subcutaneous or omental fat depots. RESULTS Macrophage-conditioned medium (MacCM) strongly inhibited 3T3-L1 adipogenesis. Dose-response studies with J774-MacCM revealed that 80 and 100% of J774-MacCM completely suppressed triacylglycerol accumulation as well as the induction of fatty acid synthase, peroxisome proliferator-activated receptor gamma, CCAAT/enhancer binding protein alpha, and adiponectin. Similar inhibitory effects on 3T3-L1 preadipocytes were observed with THP-1-MacCM. Differentiation of human abdominal subcutaneous stromal preadipocytes was moderately reduced (subcutaneous>omental) by J744-MacCM. In contrast, the differentiation of both subcutaneous and omental stromal preadipocytes was completely inhibited by THP-1-MacCM, as determined on the basis of morphology and triacylglycerol accumulation, as well as fatty acid synthase and adiponectin protein expression. CONCLUSIONS/INTERPRETATION Secreted macrophage products inhibit the differentiation of 3T3-L1 preadipocytes as well as human abdominal stromal preadipocytes.
Collapse
Affiliation(s)
- V A Constant
- Department of Medicine and of Biochemistry, University of Ottawa, Ottawa Health Research Institute, Ottawa Hospital, Ottawa, ON, Canada
| | | | | | | |
Collapse
|
32
|
Coutarel F, Daniellou F, Dugue B, Landry A, Caroly S, Roquelaure Y, Douillet P. Prévention durable des TMS : des enjeux pour la médecine du travail ? Premiers resultants d’une recherche nationale pluridisciplinaire. ARCH MAL PROF ENVIRO 2006. [DOI: 10.1016/s1775-8785(06)78275-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
33
|
Hébert M, Thibeault R, Landry A, Boisvenu M, Laporte D. Introducing an evaluation of community based occupational therapy services: a client-centred practice. Can J Occup Ther 2000; 67:146-54. [PMID: 10914477 DOI: 10.1177/000841740006700309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The results of a study conducted in 1996 by the "Groupe de recherche en ergothérapie communautaire" (GREC), indicate that the quality of occupational therapy services in community settings is infrequently evaluated. A conceptual framework supporting such a process is presented in the context of client-centered services with a focus on continuous health care improvement. Both the research process leading to the design of an assessment tool, and its congruence with the beliefs and values of the profession, are explored. Finally, some issues relating to the implementation of a formal evaluation process are discussed.
Collapse
|
34
|
Phillips WT, Andrews T, Liu HL, Klipper R, Landry A, Blumhardt R, Goins B. EVALUATION OF TECHNETIUM-99m-(Tc-99m)-LABELED LIPOSOMES VERSUS Tc-99m-SULFUR COLLOID (SC) AND Tc-99m-HUMAN SERUM ALBUMIN (HSA) FOR LYMPHOSCINTIGRAPHY IN A RABBIT MODEL. Clin Nucl Med 1999. [DOI: 10.1097/00003072-199903000-00037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
35
|
Landry A. Caught up in uroweb. Rev Urol 1999; 1:92-6. [PMID: 16985778 PMCID: PMC1476136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Emphasizing "interactive exchange and discussion" among urologists worlwide, the mission of Uroweb (www.uroweb.org) is to be a global resource for urologic specialists and investigators, although the content is mostly from urologists in Europe and the United States. The European Association of Urology, which developed this World Wide Web site, notes it was born out of the desire to link educational and practical treatment information from a wide variety of sources.
Collapse
|
36
|
Pridjian AK, Gilliland YE, Magiros E, Collins TJ, Vanmeter CH, Landry A, Moore CB. Minimally invasive direct coronary artery bypass surgery. J La State Med Soc 1997; 149:72-4. [PMID: 9055530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Three patients with isolated disease of the left anterior descending coronary received a minimally invasive direct coronary artery bypass operation. All were discharged from the hospital in 2 days and are doing well. This is an exciting new procedure which combines the long-term benefits of bypass using the mammary artery with a shortened hospital stay and a rapid postoperative recovery.
Collapse
|
37
|
Abstract
Residual memory deficits may represent a problem to the everyday functioning of a large number of people, including those who have sustained traumatic brain injury (TBI). The present exploratory study sought to investigate the interrelationships between subjective memory reports, performance on traditional memory tests, and performance on tests of prospective memory. These interrelationships were contrasted between a group of 24 adults who had sustained TBI and a group of 24 matched control subjects. Prospective memory was hypothesized to be indicative of everyday memory functioning. The results provided preliminary evidence that prospective memory tests are sensitive to TBI-related neurological impairment and, in comparison to traditional tests, may be better indicators of functional memory capacity. This pattern was particularly true for control subjects, possibly because TBI subjects had difficulties in evaluating their memory functioning.
Collapse
Affiliation(s)
- G Kinsella
- School of Psychology, La Trobe University, Victoria, Australia
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Landry A, Tremblay S. [Sexuality of stoma patients--a taboo for whom?]. Nurs Que 1988; 8:29-37. [PMID: 3205469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
39
|
Landry A, Tremblay S. [The patient with a stoma facing his new body image]. Nurs Que 1986; 6:10-6. [PMID: 3635795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
40
|
Landry A, Hartshorne MF, Bunker SR, Bauman JM, Cawthon MA, Karl RD, Howard WH. Optimal technetium-99m RBC labeling for gastrointestinal hemorrhage study. Clin Nucl Med 1985; 10:491-3. [PMID: 3875443 DOI: 10.1097/00003072-198507000-00010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Four methods of Tc-99m red blood cell labeling were tested for labeling efficiency and kinetics in normal adults. From a perspective of the gastrointestinal hemorrhage study, the in vivo method was least appropriate because of extravascular loss of pertechnetate. The modified in vitro method was disadvantageous because of long labeling intervals in a syringe fixed to the patient's forearm (45 minutes). The pure in vitro methods produced the highest labeling efficiency (95% +) and are preferred by the authors.
Collapse
|
41
|
Bunker SR, Lull RJ, Tanasescu DE, Redwine MD, Rigby J, Brown JM, Brachman MB, McAuley RJ, Ramanna L, Landry A. Scintigraphy of gastrointestinal hemorrhage: superiority of 99mTc red blood cells over 99mTc sulfur colloid. AJR Am J Roentgenol 1984; 143:543-8. [PMID: 6331732 DOI: 10.2214/ajr.143.3.543] [Citation(s) in RCA: 71] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The relative efficacy of 99mTc sulfur colloid and in vitro-labeled 99mTc red blood cells in detecting and localizing gastrointestinal hemorrhage was evaluated in a prospective tandem study of 100 patients referred for suspicion of gastrointestinal tract hemorrhage. Thirty-eight true-positive scintigrams were obtained with 99mTc red blood cells, whereas 99mTc sulfur colloid detected only five sites of hemorrhage. Scintigraphic findings were corroborated by clinical, endoscopic, arteriographic, and surgical findings. 99mTc red blood cells were clearly superior, with a sensitivity of 93%, specificity of 95%, and overall accuracy of 94% in detecting and localizing gastrointestinal hemorrhage.
Collapse
|
42
|
Landry A, Mauco G, Grandazzi M. La demographie a l'ecole. Population (French Edition) 1948. [DOI: 10.2307/1523826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|