300 results on '"Campbell LA"'
Search Results
2. The 6dF Galaxy Survey: Fundamental Plane data
- Author
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Campbell, LA, Lucey, JR, Colless, M, Jones, DH, Springob, CM, Magoulas, C, Proctor, RN, Mould, JR, Read, MA, Brough, S, Jarrett, T, Merson, AI, Lah, P, Beutler, F, Cluver, ME, Parker, QA, Campbell, LA, Lucey, JR, Colless, M, Jones, DH, Springob, CM, Magoulas, C, Proctor, RN, Mould, JR, Read, MA, Brough, S, Jarrett, T, Merson, AI, Lah, P, Beutler, F, Cluver, ME, and Parker, QA
- Published
- 2014
3. Effects of hypoxia-induced habitat compression on growth of juvenile fish in the Neuse River Estuary, North Carolina, USA
- Author
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Campbell, LA, primary and Rice, JA, additional
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- 2014
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4. Can we use medical examiners’ records for suicide surveillance and prevention research in Nova Scotia?
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Campbell, LA, primary, Jackson, L, additional, Bassett, R, additional, Bowes, MJ, additional, Donahue, M, additional, Cartwright, J, additional, and Kisely, S, additional
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- 2011
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5. Recherche sur la surveillance et la prévention du suicide en Nouvelle-Écosse : pertinence de l’utilisation des dossiers des médecins légistes
- Author
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Campbell, LA, primary, Jackson, L, additional, Bassett, R, additional, Bowes, MJ, additional, Donahue, M, additional, Cartwright, J, additional, and Kisely, S, additional
- Published
- 2011
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6. The development of community health indicators: a district-wide approach
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Russell, MW, primary, Campbell, LA, additional, Kisely, S, additional, and Persaud, D, additional
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- 2011
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7. Mise au point d’indicateurs sociosanitaires : une approche à l’échelle du district
- Author
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Russell, MW, primary, Campbell, LA, additional, Kisely, S, additional, and Persaud, D, additional
- Published
- 2011
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8. Worse than sticks and stones? Bullying is associated with altered HPA axis functioning and poorer health.
- Author
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Knack JM, Jensen-Campbell LA, and Baum A
- Abstract
Adolescents (N=107; M=12.23years, SD=1.09months) participated in a two-part study examining peer victimization, neuroendocrine functioning, and physical health. In phase 1, adolescents completed questionnaires assessing peer victimization and health. They returned for phase 2 which consisted of two sessions. In session 1, adolescents learned to collect salivary cortisol samples; they collected four samples over 2 non-sports school days. In session 2, adolescents completed the Trier Social Stress Test (TSST) in which they prepared and delivered a speech while cortisol was collected. Peer victimization predicted poor health outcomes and a flattened cortisol awakening response (CAR); this CAR was linked with health problems. During the TSST, victims reported more stress and exhibited altered cortisol levels. Higher cortisol immediately after the stressor and lower cortisol 30min after the stressor were associated with more health problems. This study provides evidence that the relationship between peer victimization and poor physical health may be explained by differences in neuroendocrine functioning. [ABSTRACT FROM AUTHOR]
- Published
- 2011
9. Anti-Chlamydial Antibiotic Therapy for Symptom Improvement in Peripheral Artery Disease: Prospective Evaluation of Rifalazil Effect on Vascular Symptoms of Intermittent Claudication and Other Endpoints in Chlamydia pneumoniae Seropositive Patients (PROVIDENCE-1)
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Jaff MR, Dale RA, Creager MA, Lipicky RJ, Constant J, Campbell LA, and Hiatt WR
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- 2009
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10. Use of smoking cessation therapies in individuals with psychiatric illness : an update for prescribers.
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Kisely S, Campbell LA, Kisely, Stephen, and Campbell, Leslie Anne
- Abstract
Individuals with mental illness are particularly disadvantaged by their use of tobacco, spending as much as 40% of their income on cigarettes. They also have increased mortality from cardiovascular and respiratory disorders. The most effective interventions to help psychiatric patients stop smoking are similar to those that are effective in the general population. These include psychological treatments, nicotine replacement therapy (NRT), bupropion and nortriptyline, at least in the short term. Most studies agree that these gains can be achieved in the absence of significant adverse effects in terms of psychological morbidity. Effects diminish over time, but these findings also apply to the general population. The best long-term results have come from extended prescription and psychological interventions, and apply equally to patients with and without a history of psychiatric disorder, such as major depression. In spite of this, clinicians are not fully exploiting opportunities to help psychiatric patients stop smoking. It is not possible to plan a programme to help individuals stop smoking in mental health settings unless factors such as demographics, diagnosis and concurrent medication are taken into account. [ABSTRACT FROM AUTHOR]
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- 2008
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11. Are the Health of the Nation Outcome Scales a valid and practical instrument to measure outcomes in North America? A three-site evaluation across Nova Scotia.
- Author
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Kisely S, Campbell LA, Crossman D, Gleich S, and Campbell J
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We tested the usability, sensitivity and validity of the Health of the Nation Outcome Scales (HoNOS) in routine clinical practice in North America. Three pilot sites provided ratings on all inpatient and outpatient referrals over 4 months using versions covering children and adolescents (HoNOSCA), working-age adults and the over-65s. Data were entered using the routine administrative data system. Sixty-one percent of eligible patients had at least one HoNOS rating (n = 485). Following the initial rating, subsequent completion rates reached 80%. Ratings were sensitive to time and setting, with significantly higher scores in inpatients than outpatients. Individual diagnoses had different patterns of scores, further supporting validity. [ABSTRACT FROM AUTHOR]
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- 2007
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12. Randomized and non-randomized evidence for the effect of compulsory community and involuntary out-patient treatment on health service use: systematic review and meta-analysis.
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Kisely S, Campbell LA, Scott A, Preston NJ, and Xiao J
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BACKGROUND: There is limited randomized controlled trial (RCT) evidence for compulsory community treatment. Other study methods may clarify their effectiveness. We reviewed RCT and non-RCT evidence for the effect of compulsory community treatment on hospital admissions, bed-days, compliance and out-patient contacts. METHOD: A systematic review of RCTs, controlled before-and-after (CBA) studies, and interrupted time series (ITS) analyses. Meta-analysis of RCTs. RESULTS: Eight papers covering five studies (two RCTs and three CBAs) met inclusion criteria (total n=1108). There was no statistical difference in 12-month admission rates between subjects on involuntary out-patient treatment and controls. Survival analyses of time to admission were equivocal. All five studies reported decreases in the number of bed-days following involuntary out-patient treatment but this only reached statistical significance in one situation; patients receiving the intervention were less likely to have admissions of over 100 days. There was no difference in treatment adherence between the intervention and control groups in either RCT or two of the CBA studies. However, the third CBA study reported a statistically significant increase of nearly five visits in the mean number of overall contacts in the involuntary out-patient treatment group. CONCLUSIONS: The evidence for involuntary out-patient treatment in reducing either admissions or bed-days is very limited. It therefore cannot be seen as a less restrictive alternative to admission. Other effects are uncertain. Evaluation of a wide range of outcomes should be included if this type of legislation is introduced. [ABSTRACT FROM AUTHOR]
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- 2007
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13. Outcomes of a cardiovascular nutrition counseling program in African-Americans with elevated blood pressure or cholesterol level.
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Kumanyika SK, Adams-Campbell LA, Van Horn B, Ten Have TR, Treu JA, Askov E, Williams J, Achterberg C, Zaghloul S, Monsegue D, Bright M, Stoy DB, Malone-Jackson M, Mooney D, Deiling S, and Caulfield J
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- 1999
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14. Dynamics of undeforming regions in the lead up to failure: jumping scales from lab to field
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Tordesillas Antoinette, Zhou Shuo, Campbell Lachlan, and Bellett Pat
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Physics ,QC1-999 - Abstract
Knowledge transfer from micromechanics of granular media failure to geohazard forecasting and mitigation has been slow. But in the face of a rapidly expanding data infrastructure on the motion of individual grains for laboratory samples – and ground motion data at the field scale – opportunities to accelerate this knowledge transfer are emerging. In particular, such data assets coupled with data-driven approaches enable ‘new eyes’ to re-examine granular failure. To this end, effective strategies that can jump scales from bench to field are urgently needed. Here we demonstrate one strategy that focusses on the study of deformation patterns in the precursory failure regime using kinematic data. Unlike previous studies which focus on regions of high strains, here we probe the development and evolution of near-undeforming regions through the lens of explosive percolation. We find a common dynamical signature in which undeforming regions, which are initially transient in the precursory failure regime, become persistent from the time of imminent failure. We demonstrate the robustness of these findings for data on individual grain motions in a classical laboratory test and ground motion in two real landslides at vastly different scales.
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- 2021
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15. Nursing procedures and alterations in transcutaneous oxygen tension in premature infants.
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Norris S, Campbell LA, and Brenkert S
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- 1982
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16. In quest of an erythropoietic function of the adult murine thymus
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Bain Go, Campbell La, and McGregor
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Male ,Histocytochemistry ,Iron ,Morphology (biology) ,Thymus Gland ,Biology ,Thymectomy ,Iron Isotopes ,Salivary Glands ,Cell biology ,Mice ,Physiology (medical) ,Immunology ,Animals ,Erythropoiesis ,Femur ,Lymph Nodes ,Radiometry ,Function (biology) - Published
- 1967
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17. Oxygen-induced intergranular fracture of the nickel-base alloy IN718 during mechanical loading at high temperatures
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Ulrich Krupp, William Kane, Jeffrey A. Pfaendtner, Xinyu Liu, Campbell Laird, and Charles J. McMahon Jr.
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IN718 ,intergranular fracture ,dynamic embrittlement ,grain boundary diffusion ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
There is a transition in the mechanical-failure behavior of nickel-base superalloys from ductile transgranular crack propagation to time-dependent intergranular fracture when the temperature exceeds about 600 °C. This transition is due to oxygen diffusion into the stress field ahead of the crack tip sufficient to cause brittle decohesion of the grain boundaries. Since very high cracking rates were observed during fixed-displacement loading of IN718, it is not very likely that grain boundary oxidation governs the grain-boundary-separation process, as has been proposed in several studies on the fatigue-damage behavior of the nickel-base superalloy IN718. Further studies on bicrystal and thermomechanically processed specimens of IN718 have shown that this kind of brittle fracture, which has been termed "dynamic embrittlement", depends strongly on the structure of the grain boundaries.
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- 2004
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18. Providing educational services
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Campbell Larry and MNG Mani
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Child ,Blindness ,Vision Disorders ,Vision ,Low ,Education ,Health Services ,Referral and Consultation ,Rehabilitation ,Ophthalmology ,RE1-994 - Abstract
At least eighty per cent of the world's visually impaired children live in low- and middle-income countries, where less than ten per cent of them have access to education. This sad fact almost guarantees that these children face a lifetime of poverty and illiteracy.
- Published
- 2007
19. Expression of human immunodeficiency virus envelope protein in the human central nervous system.
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Agbey C, Walton S, Campbell LA, Nath A, Smith B, Snow J, Wiebold A, Hou C, Ma J, and Mocchetti I
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Objective/design: The human immunodeficiency virus (HIV) envelope glycoprotein gp120 contributes to neuronal damage that could lead to human immunodeficiency virus-mediated neurocognitive disorder. However, it is debated whether gp120 could promote direct neurotoxicity to synapses because it may not be present in the central nervous system of people living with human immunodeficiency virus (PLWH) on antiretroviral therapy (ART). This study sought to establish whether gp120 is expressed in the human central nervous system in the pre- and post- ART era., Methods: We utilized real-time polymerase chain reaction (PCR) to detect the envelope mRNA in postmortem caudate nucleus from pre-ART era. HIV negative samples were used as controls. We then used RNAscope fluorescence multiplex to identify which cells express the envelope mRNA. To determine whether gp120 is present despite ART, we analyzed cerebrospinal fluid (CSF) samples from PLWH on ART using mass spectrometry., Results: Using PCR, we detected the envelope mRNA in the caudate nucleus from PLWH with neurocognitive impairment but not in control samples. With RNAscope, we detected the envelope mRNA in microglia and astrocytes in the frontal cortex and caudate nucleus from HIV-positive tissue. With mass spectrometry, we identified a gp120 peptide in the CSF of PLWH on antiretroviral therapy (n = 20) but not in control subjects (n = 7)., Conclusion: Our data suggest that despite antiretroviral therapy, gp120 is expressed and likely released by infected cells, suggesting that gp120 could be one of the key factors in the neuropathology observed in people living with human immunodeficiency virus., (Copyright © 2025 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2025
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20. MCU expression in hippocampal CA2 neurons modulates dendritic mitochondrial morphology and synaptic plasticity.
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Pannoni KE, Fischer QS, Tarannum R, Cawley ML, Alsalman MM, Acosta N, Ezigbo C, Gil DV, Campbell LA, and Farris S
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- Animals, Mice, Synapses metabolism, Hippocampus metabolism, Neurons metabolism, Male, Mitochondrial Proteins, Neuronal Plasticity physiology, Mitochondria metabolism, Dendrites metabolism, Mice, Knockout, Calcium Channels metabolism, Calcium Channels genetics
- Abstract
Neuronal mitochondria are diverse across cell types and subcellular compartments in order to meet unique energy demands. While mitochondria are essential for synaptic transmission and synaptic plasticity, the mechanisms regulating mitochondria to support normal synapse function are incompletely understood. The mitochondrial calcium uniporter (MCU) is proposed to couple neuronal activity to mitochondrial ATP production, which would allow neurons to rapidly adapt to changing energy demands. MCU is uniquely enriched in hippocampal CA2 distal dendrites compared to proximal dendrites, however, the functional significance of this layer-specific enrichment is not clear. Synapses onto CA2 distal dendrites readily express plasticity, unlike the plasticity-resistant synapses onto CA2 proximal dendrites, but the mechanisms underlying these different plasticity profiles are unknown. Using a CA2-specific MCU knockout (cKO) mouse, we found that MCU deletion impairs plasticity at distal dendrite synapses. However, mitochondria were more fragmented and spine head area was diminished throughout the dendritic layers of MCU cKO mice versus control mice. Fragmented mitochondria might have functional changes, such as altered ATP production, that could explain the structural and functional deficits at cKO synapses. Differences in MCU expression across cell types and circuits might be a general mechanism to tune mitochondrial function to meet distinct synaptic demands., Competing Interests: Declarations. Competing interests: The authors declare no competing interests., (© 2025. The Author(s).)
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- 2025
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21. Routine vaccine uptake in school-aged autistic and non-autistic youth: A linked database study.
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Dodds L, Filliter C, Campbell LA, MacDonald NE, Shea S, Dubé E, Smith IM, Mehrabadi A, and Filliter JH
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- Child, Humans, Cohort Studies, Diphtheria-Tetanus-acellular Pertussis Vaccines administration & dosage, Hepatitis B Vaccines administration & dosage, Informed Consent, Meningococcal Vaccines administration & dosage, Nova Scotia, Papillomavirus Vaccines administration & dosage, Retrospective Studies, Vaccination, Schools, Autism Spectrum Disorder, Vaccination Coverage
- Abstract
Objectives: This study was conducted to determine whether school-aged autistic youth received routine vaccines at a lower rate than their non-autistic peers., Methods: In Nova Scotia (NS), Canada, vaccines routinely delivered in early adolescence are administered to Grade 7 students through a school-based Public Health vaccination program. NS youth eligible to receive Grade 7 vaccinations between 2011 and 2017 were included in this study. Autism spectrum disorder (ASD) diagnoses were determined from administrative health data. Rates of receipt of any Grade 7 vaccine and of individual vaccines were compared between autistic and non-autistic youth. Subgroup analyses included comparing Grade 7 vaccine receipt between autistic youth and their non-autistic siblings and early childhood vaccine receipt between autistic and non-autistic cohorts., Results: The rates of receipt of any vaccine were 73% among 916 autistic youth and 82% among 49,599 non-autistic youth (adjusted relative risk = 0.91; 95% confidence interval = 0.87-0.95). Similar results were found for individual vaccines. Subgroup analyses revealed lower rates of Grade 7 vaccine receipt among autistic youth compared to among their non-autistic siblings. Rates of early childhood vaccine receipt did not differ between autistic and non-autistic cohorts., Conclusion: Autistic youth were under-vaccinated compared to their non-autistic peers for Grade 7 vaccinations. Lower vaccination rates in autistic youth than in their non-autistic siblings suggest that setting-related factors may contribute more to the under-vaccination of autistic youth than parental vaccine hesitancy. Barriers to vaccine uptake for school-aged autistic youth, including those unique to school-based vaccination programs, must be explored and addressed., Competing Interests: Declarations. Ethics approval: Data access was approved by the Reproductive Care Program of Nova Scotia and Health Data Nova Scotia and the IWK Health Centre Research Ethics Board (Project # 1021897) approved the study. Consent to participate: NA. Consent for publication: NA. Conflict of interest: The authors declare no competing interests. Disclaimer: Portions of the data used in this report were made available by Health Data Nova Scotia of Dalhousie University. Although this research is based on data obtained from the Nova Scotia Department of Health and Wellness, the observations and opinions expressed are those of the authors and do not represent those of either Health Data Nova Scotia or the Department of Health and Wellness., (© 2024. The Author(s) under exclusive license to The Canadian Public Health Association.)
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- 2024
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22. EBM BLS: Destroying the Nerves to the Kidneys Reduces Blood Pressure in Patients with Uncontrolled Moderate Hypertension.
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Kombathula R, Campbell LA, and Jackson CD
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- Humans, Kidney physiopathology, Sympathectomy methods, Hypertension, Blood Pressure physiology
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- 2024
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23. Obesity in Adults.
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Campbell LA, Kombathula R, and Jackson CD
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- Adult, Humans, Behavior Therapy, Exercise physiology, Weight Loss physiology, Diet, Healthy methods, Anti-Obesity Agents therapeutic use, Obesity complications, Obesity etiology, Obesity psychology, Obesity therapy
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- 2024
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24. The crucial importance of accurate enumeration to bringing public health nurses out from behind the "Other" category.
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Campbell LA, Kub J, Lee SK, and McDermott-Levy R
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- Humans, United States, Public Health Nursing standards, COVID-19 epidemiology, Nurses, Public Health statistics & numerical data
- Abstract
Public health nursing is a unique field of nursing with specialized skills, roles, and functions designed to address disease prevention and health promotion of populations and to respond to emerging health crisis such the COVID-19 pandemic. Despite the unique role and professional responsibilities of public health nurses, they are not identified as a distinct nursing specially by the U.S. Bureau of Labor Statistics workforce data. This is problematic as accurate enumeration of public health nursing can supply the necessary data to identify gaps of these essential professionals. To effectively address this gap and have the capacity to identify public health nursing workforce needs, a method to define, describe, and enumerate the public health nursing workforce nationally with a unique split Standard Occupational Classification is necessary. Further, the Centers for Disease Control and Prevention's Public Health and Data Authority must have the ability to coordinate data reporting on the public health workforce, support standardization, and streamline annual enumeration., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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25. Importance of investigating vulnerabilities in health and social service provision among requestors of medical assistance in dying.
- Author
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Asada Y, Campbell LA, Grignon M, Hothi H, Stainton T, and Kim SYH
- Abstract
Competing Interests: We declare no competing interests.
- Published
- 2024
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26. A Histone Methylation-MAPK Signaling Axis Drives Durable Epithelial-Mesenchymal Transition in Hypoxic Pancreatic Cancer.
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Brown BA, Myers PJ, Adair SJ, Pitarresi JR, Sah-Teli SK, Campbell LA, Hart WS, Barbeau MC, Leong K, Seyler N, Kane W, Lee KE, Stelow E, Jones M, Simon MC, Koivunen P, Bauer TW, Stanger BZ, and Lazzara MJ
- Subjects
- Animals, Humans, Mice, Cell Line, Tumor, F-Box Proteins, Jumonji Domain-Containing Histone Demethylases, Methylation, Mice, Nude, Carcinoma, Pancreatic Ductal drug therapy, Carcinoma, Pancreatic Ductal pathology, Epithelial-Mesenchymal Transition, Histones metabolism, MAP Kinase Signaling System, Pancreatic Neoplasms drug therapy, Pancreatic Neoplasms pathology, Tumor Hypoxia
- Abstract
The tumor microenvironment in pancreatic ductal adenocarcinoma (PDAC) plays a key role in tumor progression and response to therapy. The dense PDAC stroma causes hypovascularity, which leads to hypoxia. Here, we showed that hypoxia drives long-lasting epithelial-mesenchymal transition (EMT) in PDAC primarily through a positive-feedback histone methylation-MAPK signaling axis. Transformed cells preferentially underwent EMT in hypoxic tumor regions in multiple model systems. Hypoxia drove a cell autonomous EMT in PDAC cells, which, unlike EMT in response to growth factors, could last for weeks. Furthermore, hypoxia reduced histone demethylase KDM2A activity, suppressed PP2 family phosphatase expression, and activated MAPKs to post-translationally stabilize histone methyltransferase NSD2, leading to an H3K36me2-dependent EMT in which hypoxia-inducible factors played only a supporting role. Hypoxia-driven EMT could be antagonized in vivo by combinations of MAPK inhibitors. Collectively, these results suggest that hypoxia promotes durable EMT in PDAC by inducing a histone methylation-MAPK axis that can be effectively targeted with multidrug therapies, providing a potential strategy for overcoming chemoresistance., Significance: Integrated regulation of histone methylation and MAPK signaling by the low-oxygen environment of pancreatic cancer drives long-lasting EMT that promotes chemoresistance and shortens patient survival and that can be pharmacologically inhibited. See related commentary by Wirth and Schneider, p. 1739., (©2024 American Association for Cancer Research.)
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- 2024
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27. Addressing diversity, equity, and inclusion: A response of professional nursing organizations to the future of nursing: 2020-2030 recommendations.
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Campbell LA, Kelly PJ, and Kneipp SM
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- Humans, Needs Assessment, Policy, Social Determinants of Health, Nursing Staff, Racism prevention & control
- Abstract
One way in which professional nursing organizations have chosen to address the social determinants of health (SDoH) is through policy work focused on diversity, health equity and anti-racism activities. The recent report, Future of Nursing 2020-2030: Charting a Path to Achieve Health Equity (FON 2020-2030), calls on professional nursing organizations and/or nursing coalitions to focus on addressing the SDoH to mitigate health inequities, including a focus on addressing racism and promoting practices to ensure the diversity of the nursing workforce. While these recommendations highlight issues of high importance to nursing and the broader society, they assume that professional nursing organizations or coalitions have not been sufficiently engaged in this work to date. Our goal was to better understand the current and/or ongoing activities of professional nursing organizations around their anti-racism work of diversity, health equity, and inclusion (DEI) activities recommended in the FON 2020-2030 report. To address this goal, we conducted a needs assessment of professional nursing organizations to document their DEI activities and the timing of these activities relevant to the recommendations in the report. The 26 responding organizations indicated they had been engaged in work addressing DEI issues for periods ranging from 4 months to 51 years. Minimal funding was the major barrier to advancing this work. Creating a vigorous shared DEI agenda across the profession, as suggested in the FON 2020-2030 report, will require input from nurses across the profession, as well as identification of resources to support this critical endeavor., (© 2024 Wiley Periodicals LLC.)
- Published
- 2024
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28. MCU-enriched dendritic mitochondria regulate plasticity in distinct hippocampal circuits.
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Pannoni KE, Fischer QS, Tarannum R, Cawley ML, Alsalman MM, Acosta N, Ezigbo C, Gil DV, Campbell LA, and Farris S
- Abstract
Mitochondria are dynamic organelles that are morphologically and functionally diverse across cell types and subcellular compartments in order to meet unique energy demands. Mitochondrial dysfunction has been implicated in a wide variety of neurological disorders, including psychiatric disorders like schizophrenia and bipolar disorder. Despite it being well known that mitochondria are essential for synaptic transmission and synaptic plasticity, the mechanisms regulating mitochondria in support of normal synapse function are incompletely understood. The mitochondrial calcium uniporter (MCU) regulates calcium entry into the mitochondria, which in turn regulates the bioenergetics and distribution of mitochondria to active synapses. Evidence suggests that calcium influx via MCU couples neuronal activity to mitochondrial metabolism and ATP production, which would allow neurons to rapidly adapt to changing energy demands. Intriguingly, MCU is uniquely enriched in hippocampal CA2 distal dendrites relative to neighboring hippocampal CA1 or CA3 distal dendrites, however, the functional significance of this enrichment is not clear. Synapses from the entorhinal cortex layer II (ECII) onto CA2 distal dendrites readily express long term potentiation (LTP), unlike the LTP-resistant synapses from CA3 onto CA2 proximal dendrites, but the mechanisms underlying these different plasticity profiles are unknown. We hypothesized that enrichment of MCU near ECII-CA2 synapses promotes LTP in an otherwise plasticity-restricted cell type. Using a CA2-specific MCU knockout (cKO) mouse, we found that MCU is required for LTP at distal dendrite synapses but does not affect the lack of LTP at proximal dendrite synapses. Loss of LTP at ECII-CA2 synapses correlated with a trend for decreased spine density in CA2 distal dendrites of cKO mice compared to control (CTL) mice, which was predominantly seen in immature spines. Moreover, mitochondria were significantly smaller and more numerous across all dendritic layers of CA2 in cKO mice compared to CTL mice, suggesting an overall increase in mitochondrial fragmentation. Fragmented mitochondria might have functional changes, such as altered ATP production, that might explain a deficit in synaptic plasticity. Collectively, our data reveal that MCU regulates layer-specific forms of plasticity in CA2 dendrites, potentially by maintaining proper mitochondria morphology and distribution within dendrites. Differences in MCU expression across different cell types and circuits might be a general mechanism to tune the sensitivity of mitochondria to cytoplasmic calcium levels to power synaptic plasticity., Competing Interests: Conflict of interest The authors declare that they have no competing interests.
- Published
- 2024
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29. Semaglutide and Cardiovascular Outcomes.
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Campbell LA, Jenkins AV, and Jackson CD
- Subjects
- Humans, Obesity, Glucagon-Like Peptides therapeutic use, Diabetes Mellitus, Type 2 complications, Diabetes Mellitus, Type 2 drug therapy
- Published
- 2024
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30. Gesicles packaging dCas9-VPR ribonucleoprotein complexes can combine with vorinostat and promote HIV proviral transcription.
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Fisher MA, Chaudhry W, and Campbell LA
- Abstract
Despite the success of combination antiretroviral therapy (cART) in HIV treatment, a cure for HIV remains elusive. Scientists postulate that HIV latent reservoirs may be a vital target in curative strategies. Vorinostat is a latency-reversing agent that has demonstrated some effectiveness in reactivating latent HIV, but complementary therapies may be essential to enhance its efficacy. One such approach may utilize the CRISPR-Cas9 system, which has evolved to include transcriptional activators such as dCas9-VPR. In this study, we explored the effects of combining vorinostat coupled with gesicle-mediated delivery of dCas9-VPR in promoting the transcription of integrated HIV proviruses in HIV-NanoLuc CHME-5 microglia and J-Lat 10.6 lymphocytes. We confirmed that dCas9-VPR ribonucleoprotein complexes can be packaged into gesicles and application to cells successfully induced HIV transcription through interactions with the HIV LTR. Vorinostat also induced significant increases in proviral transcription but generated inhibition of cellular proliferation (microglia) or cell viability (lymphocytes) starting at 1,000 nM and higher concentrations. Experiments combining dCas9-VPR gesicles and vorinostat confirmed the enhanced transcriptional activation of the HIV provirus in microglia but not lymphocytes. Thus, a combination of dCas9-VPR gesicles with other latency-reversing agents may provide a complementary method to activate latent HIV in future studies utilizing patient-derived cells or small animal models., Competing Interests: The authors declare no competing interests., (© 2024 The Authors.)
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- 2024
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31. Getting a CLEARER Picture: Bempedoic Acid and Cardiovascular Outcomes in Patients with Statin Intolerance.
- Author
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Campbell LA, Ammon JP, and Jackson CD
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- Humans, Dicarboxylic Acids, Fatty Acids, Heart, Hydroxymethylglutaryl-CoA Reductase Inhibitors adverse effects, Cardiovascular Diseases
- Published
- 2024
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32. A preliminary randomized controlled trial of repetitive transcranial magnetic stimulation applied to the left dorsolateral prefrontal cortex in treatment seeking participants with cannabis use disorder.
- Author
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Sahlem GL, Kim B, Baker NL, Wong BL, Caruso MA, Campbell LA, Kaloani I, Sherman BJ, Ford TJ, Musleh AH, Kim JP, Williams NR, Manett AJ, Kratter IH, Short EB, Killeen TK, George MS, and McRae-Clark AL
- Subjects
- Humans, Female, Young Adult, Adult, Male, Transcranial Magnetic Stimulation, Dorsolateral Prefrontal Cortex, Prefrontal Cortex physiology, Double-Blind Method, Treatment Outcome, Substance-Related Disorders, Marijuana Abuse therapy
- Abstract
Background: Cannabis use disorder (CUD) is a common and consequential disorder. When applied to the dorsolateral prefrontal cortex (DLPFC), repetitive transcranial magnetic stimulation (rTMS) reduces craving across substance use disorders and may have therapeutic clinical effects when applied in serial-sessions. The present study sought to preliminarily determine whether serial-sessions of rTMS applied to the DLPFC had a therapeutic effect in CUD., Methods: This study was a two-site, phase-2, double-blind, randomized-controlled-trial. Seventy-two treatment-seeking participants (37.5% Women, mean age 30.2±9.9SD) with ≥moderate-CUD were randomized to active or sham rTMS (Beam-F3, 10Hz, 20-total-sessions, two-sessions-per-visit, two-visits-per-week, with cannabis cues) while undergoing a three-session motivational enhancement therapy intervention. The primary outcome was the change in craving between pre- and post- treatment (Marijuana Craving Questionnaire Short-Form-MCQ-SF). Secondary outcomes included the number of weeks of abstinence and the number of days-per-week of cannabis use during 4-weeks of follow-up., Results: There were no significant differences in craving between conditions. Participants who received active-rTMS reported numerically, but not significantly, more weeks of abstinence in the follow-up period than those who received sham-rTMS (15.5%-Active; 9.3%-Sham; rate ratio = 1.66 [95% CI: 0.84, 3.28]; p=0.14). Participants who received active-rTMS reported fewer days-per-week of cannabis use over the final two-weeks of the follow-up period than those receiving sham-rTMS (Active vs. Sham: -0.72; Z=-2.33, p=0.02)., Conclusions: This trial suggests rTMS is safe and feasible in individuals with CUD and may have a therapeutic effect on frequency of cannabis use, though further study is needed with additional rTMS-sessions and a longer follow-up period., Competing Interests: Declaration of Competing Interest GLS has collaborated with MagVenture and MECTA as part of investigator-initiated trials. He additionally consults for and has equity in the company Trial Catalyst. TJF is employed by Magnus Medical and holds stock/equity options. NRW is a named inventor on Stanford-owned intellectual property relating to accelerated TMS pulse pattern sequences and neuroimaging-based TMS targeting; he has served on scientific advisory boards for Otsuka, NeuraWell, Magnus Medical, and Nooma as a paid advisor; and he has equity/stock options in Magnus Medical, NeuraWell, and Nooma. EBS is a paid consultant for Neuronetics and is an equity holder of Bodhi Neurotech. MSG has the following disclosures; Babystrong (patent co-holder), Brainsway (unpaid consultant, research grant, donated equipment for research trials), Magnus Medical (unpaid scientific Advisor), Magstim (unpaid consultant, donated equipment for research trials), MECTA (unpaid consultant, research grant, donated equipment for research grant), Microtransponder (DSMB member), Neuronetics (unpaid consultant, research grant, donated equipment for research), NeoSync (unpaid consultant, DSMB member), Neuralief (scientific advisory board, research grant, and Sooma (scientific advisory board), and he is an editor of the Elsevier journal Brain Stimulation. ALM has received research support from PleoPharma. None of the other authors have any relevant conflicts to disclose., (Copyright © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2024
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33. Understanding the uptake of virtual care for first and return outpatient appointments in child and adolescent mental health services: a mixed-methods study.
- Author
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Campbell LA, Clark SE, Chorney J, Emberly D, Carrey NJ, Bagnell A, Blenus J, Daneff M, and Campbell JC
- Subjects
- Child, Humans, Adolescent, Delivery of Health Care, Public Health, Pandemics, Nova Scotia, Outpatients, Mental Health Services
- Abstract
Objective: To describe patterns of virtual and in-person outpatient mental health service use and factors that may influence the choice of modality in a child and adolescent service., Design: A pragmatic mixed-methods approach using routinely collected administrative data between 1 April 2020 and 31 March 2022 and semi-structured interviews with clients, caregivers, clinicians and staff. Interview data were coded according to the Consolidated Framework for Implementation Research (CFIR) and examined for patterns of similarity or divergence across data sources, respondents or other relevant characteristics., Setting: Child and adolescent outpatient mental health service, Nova Scotia, Canada., Participants: IWK Health clinicians and staff who had participated in virtual mental healthcare following its implementation in March 2020 and clients (aged 12-18 years) and caregivers of clients (aged 3-18 years) who had received treatment from an IWK outpatient clinic between 1 April 2020 and 31 March 2022 (n=1300). Participants (n=48) in semi-structured interviews included nine clients aged 13-18 years (mean 15.7 years), 10 caregivers of clients aged 5-17 years (mean 12.7 years), eight Community Mental Health and Addictions booking and registration or administrative staff and 21 clinicians., Results: During peak pandemic activity, upwards of 90% of visits (first or return) were conducted virtually. Between waves, return appointments were more likely to be virtual than first appointments. Interview participants (n=48) reported facilitators and barriers to virtual care within the CFIR domains of 'outer setting' (eg, external policies, client needs and resources), 'inner setting' (eg, communications within the service), 'individual characteristics' (eg, personal attributes, knowledge and beliefs about virtual care) and 'intervention characteristics' (eg, relative advantage of virtual or in-person care)., Conclusions: Shared decision-making regarding treatment modality (virtual vs in-person) requires consideration of client, caregiver, clinician, appointment, health system and public health factors across episodes of care to ensure accessible, safe and high-quality mental healthcare., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2023
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34. Do Social Support and Loneliness Influence Emerging Adults' Mental Health during the First Year of the COVID-19 Pandemic?
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Jensen-Campbell LA, Liegey Dougall A, Heller AC, Iyer-Eimerbrink P, Bland MK, and Hull K
- Abstract
Youths' mental health is at a crisis level, with mental health problems doubling in the US since the pandemic began. To compound the mental health crisis, there is a global loneliness epidemic, with emerging adults worldwide experiencing some of the highest rates. One study with two phases examined the influence of social support and loneliness on mental health in US emerging adults during the pandemic, including changes in these relationships over one year. Emerging adults ( N = 449) completed online questionnaires via Prolific in May 2020 (Phase 1) and again from January to May 2021 ( N = 253; Phase 2). More perceived support was related to reduced loneliness, with family support having the most significant influence. Loneliness mediated the link between perceived support and adverse health outcomes. Higher loneliness predicted more perceived stress and sleep difficulties concurrently and over time. There was a bidirectional relationship between loneliness and depression, such that higher levels of either variable at Time 1 predicted increases in the other over time. Results highlight the detrimental impact of loneliness on emerging adults' mental health.
- Published
- 2023
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35. Surveillance of Child and Youth Mental Disorders and Associated Service Use in Canada.
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Edwards J, Kurdyak P, Waddell C, Patten SB, Reid GJ, Campbell LA, and Georgiades K
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- Humans, Child, Adolescent, Canada epidemiology, Mental Disorders epidemiology, Mental Disorders therapy
- Abstract
Competing Interests: Declaration of Conflicting InterestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: While we declare no competing interests, it is important to disclose that two authors on this article are members of the editorial board of the Canadian Journal of Psychiatry. This includes Dr. Patten as the Editor Emeritus and Dr. Kurdyak as an Associate Editor.
- Published
- 2023
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36. Associations of active and passive smartphone use with measures of youth mental health during the COVID-19 pandemic.
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Marin-Dragu S, Forbes A, Sheikh S, Iyer RS, Pereira Dos Santos D, Alda M, Hajek T, Uher R, Wozney L, Paulovich FV, Campbell LA, Yakovenko I, Stewart SH, Corkum P, Bagnell A, Orji R, and Meier S
- Subjects
- Humans, Female, Adolescent, Young Adult, Adult, Male, Smartphone, Mental Health, Pandemics, COVID-19, Mobile Applications
- Abstract
Smartphone use provides a significant amount of screen-time for youth, and there have been growing concerns regarding its impact on their mental health. While time spent in a passive manner on the device is frequently considered deleterious, more active engagement with the phone might be protective for mental health. Recent developments in mobile sensing technology provide a unique opportunity to examine behaviour in a naturalistic manner. The present study sought to investigate, in a sample of 451 individuals (mean age 20.97 years old, 83% female), whether the amount of time spent on the device, an indicator of passive smartphone use, would be associated with worse mental health in youth and whether an active form of smartphone use, namely frequent checking of the device, would be associated with better outcomes. The findings highlight that overall time spent on the smartphone was associated with more pronounced internalizing and externalizing symptoms in youth, while the number of unlocks was associated with fewer internalizing symptoms. For externalizing symptoms, there was also a significant interaction between the two types of smartphone use observed. Using objective measures, our results suggest interventions targeting passive smartphone use may contribute to improving the mental health of youth., Competing Interests: Declaration of Competing Interest All authors have no conflicts of interest to declare., (Copyright © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2023
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37. A Preliminary Investigation Of Repetitive Transcranial Magnetic Stimulation Applied To The Left Dorsolateral Prefrontal Cortex In Treatment Seeking Participants With Cannabis Use Disorder.
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Sahlem GL, Kim B, Baker NL, Wong BL, Caruso MA, Campbell LA, Kaloani I, Sherman BJ, Ford TJ, Musleh AH, Kim JP, Williams NR, Manett AJ, Kratter IH, Short EB, Killeen TK, George MS, and McRae-Clark AL
- Abstract
Background: Cannabis use disorder (CUD) is a common and consequential disorder. When applied to the dorsolateral prefrontal cortex (DLPFC), repetitive transcranial magnetic stimulation (rTMS) reduces craving across substance use disorders and may have a therapeutic clinical effect when applied in serial sessions. The present study sought to preliminarily determine whether serial sessions of rTMS applied to the DLPFC had a therapeutic effect in CUD., Methods: This study was a two-site, phase-2, double-blind, randomized-controlled-trial. Seventy-two treatment-seeking participants (37.5% Women, mean age 30.2±9.9SD) with ≥moderate-CUD were randomized to active or sham rTMS (Beam-F3, 10Hz, 20-total-sessions, with cannabis cues) while undergoing a three-session motivational enhancement therapy intervention. The primary outcome was the change in craving between pre- and post-treatment (Marijuana Craving Questionnaire Short-Form-MCQ-SF). Secondary outcomes included the number of weeks of abstinence and the number of days-per-week of cannabis use during 4-weeks of follow-up., Results: There were no significant differences in craving between conditions. Participants who received active rTMS reported numerically, but not significantly, more weeks of abstinence in the follow-up period than those who received sham rTMS (15.5%-Active; 9.3%-Sham; rate ratio = 1.66 [95% CI: 0.84, 3.28]; p =0.14). Participants who received active rTMS reported fewer days-per-week of cannabis use over the final two-weeks of the follow-up period (Active vs. Sham: -0.72; Z=-2.33, p =0.02)., Conclusions: This trial suggests rTMS is safe and feasible in individuals with CUD and may have a therapeutic effect on frequency of cannabis use, though further study is needed with additional rTMS-sessions and a longer follow-up period., Competing Interests: Declaration of Interests: GLS has collaborated with MagVenture and MECTA as part of investigator-initiated trials. He additionally consults for and has equity in the company Trial Catalyst. TJF is employed by Magnus Medical and holds stock/equity options. NRW is a named inventor on Stanford-owned intellectual property relating to accelerated TMS pulse pattern sequences and neuroimaging-based TMS targeting; he has served on scientific advisory boards for Otsuka, NeuraWell, Magnus Medical, and Nooma as a paid advisor; and he has equity/stock options in Magnus Medical, NeuraWell, and Nooma. EBS is a paid consultant for Neuronetics and is an equity holder of Bodhi Neurotech. MSG has the following disclosures; Babystrong (patent co-holder), Brainsway (unpaid consultant, research grant, donated equipment for research trials), Magnus Medical (unpaid scientific Advisor), Magstim (unpaid consultant, donated equipment for research trials), MECTA (unpaid consultant, research grant, donated equipment for research grant), Microtransponder (DSMB member), Neuronetics (unpaid consultant, research grant, donated equipment for research), NeoSync (unpaid consultant, DSMB member), Neuralief (scientific advisory board, research grant, and Sooma (scientific advisory board), and he is an editor of the Elsevier journal Brain Stimulation. ALM has received research support from PleoPharma. None of the other authors have any relevant conflicts to disclose.
- Published
- 2023
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38. Parental experience is linked with lower vasopressin receptor 1a binding and decreased postpartum androgens in titi monkeys.
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Baxter A, Karaskiewicz CL, Campbell LA, Kinnally EL, Ferrer E, Seelke AHM, Freeman SM, and Bales KL
- Subjects
- Male, Humans, Animals, Pregnancy, Female, Callicebus metabolism, Brain metabolism, Postpartum Period, Receptors, Vasopressin metabolism, Androgens metabolism
- Abstract
Parenting induces many neurological and behavioral changes that enable parents to rear offspring. Vasopressin plays an important role in this process via its effects on cognition, affect, and neuroplasticity, and in some cases, via interactions with decreased parental androgens. Thus far, the role of these hormones has been primarily studied in rodents. To address this gap, we explored vasopressin receptors and androgens in titi monkeys, a pair-bonding and biparental primate species. In Studies 1 and 2, we used receptor autoradiography to correlate arginine vasopressin receptor 1a (AVPR1a) binding in the hippocampus (Study 1, n = 10) and the rest of the forebrain (Study 2, n = 23) with parental status, parental experience, parity, infant carrying, and pair affiliation. We found that parents exhibited lower AVPR1a binding than non-parents throughout most brain regions assessed, with especially strong effects in the hippocampus (β = -.61), superior colliculus (β = -.88), lateral septum (β = -.35), and medial preoptic area (β = -.29). The other measures of parental experience also tended to be negatively associated with AVPR1a binding across different brain regions. In Study 3 (n = 44), we compared pre- and postpartum urinary androgen levels in parents and non-parents and found that mothers exhibited a sustained androgen decrease across 3-4 months postpartum (relative to 3 months prepartum; β ranged from -.72 to -.62 for different comparisons). For males, we found that multiparous fathers exhibited decreased androgen levels at 1-2 weeks postpartum (β = -.25) and at 3-4 months postpartum (β = -.40) compared to the prepartum, indicating both immediate and long-term reductions with subsequent paternal experience. Together, the results of this study suggest that decreases in AVPR1a binding and circulating androgens are associated with parental behavior and physiology in titi monkeys., (© 2023 The Authors. Journal of Neuroendocrinology published by John Wiley & Sons Ltd on behalf of British Society for Neuroendocrinology.)
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- 2023
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39. Use of gene sequences as type for naming prokaryotes: Recommendations of the international committee on the taxonomy of chlamydiae.
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Greub G, Pillonel T, Bavoil PM, Borel N, Campbell LA, Dean D, Hefty S, Horn M, Morré SA, Ouellette SP, Pannekoek Y, Puolakkainen M, Timms P, Valdivia R, and Vanrompay D
- Abstract
The International Committee on Systematics of Prokaryotes (ICSP) discussed and rejected in 2020 a proposal to modify the International Code of Nomenclature of Prokaryotes to allow the use of gene sequences as type for naming prokaryotes. An alternative nomenclatural code, the Code of Nomenclature of Prokaryotes Described from Sequence Data (SeqCode), which considers genome sequences as type material for naming species, was published in 2022. Members of the ICSP subcommittee for the taxonomy of the phylum Chlamydiae ( Chlamydiota ) consider that the use of gene sequences as type would benefit the taxonomy of microorganisms that are difficult to culture such as the chlamydiae and other strictly intracellular bacteria. We recommend the registration of new names of uncultured prokaryotes in the SeqCode registry., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors.)
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- 2023
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40. Mice deficient for G-protein-coupled receptor 75 display altered presynaptic structural protein expression and disrupted fear conditioning recall.
- Author
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Speidell A, Walton S, Campbell LA, Tomassoni-Ardori F, Tessarollo L, Corbo C, Taraballi F, and Mocchetti I
- Subjects
- Animals, Mice, Ligands, Mice, Knockout, Proteomics, Fear, Hippocampus metabolism, Receptors, G-Protein-Coupled genetics, Receptors, G-Protein-Coupled metabolism
- Abstract
There are a number of G-protein-coupled receptors (GPCRs) that are considered "orphan receptors" because the information on their known ligands is incomplete. Yet, these receptors are important targets to characterize, as the discovery of their ligands may lead to potential new therapies. GPR75 was recently deorphanized because at least two ligands appear to bind to it, the chemokine CCL5 and the eicosanoid 20-Hydroxyeicosatetraenoic acid. Recent reports suggest that GPR75 may play a role in regulating insulin secretion and obesity. However, little is known about the function of this receptor in the brain. To study the function of GPR75, we have generated a knockout (KO) mouse model of this receptor and we evaluated the role that this receptor plays in the adult hippocampus by an array of histological, proteomic, and behavioral endpoints. Using RNAscope® technology, we identified GPR75 puncta in several Rbfox3-/NeuN-positive cells in the hippocampus, suggesting that this receptor has a neuronal expression. Proteomic analysis of the hippocampus in 3-month-old GPR75 KO animals revealed that several markers of synapses, including synapsin I and II are downregulated compared with wild type (WT). To examine the functional consequence of this down-regulation, WT and GPR75 KO mice were tested on a hippocampal-dependent behavioral task. Both contextual memory and anxiety-like behaviors were significantly altered in GPR75 KO, suggesting that GPR75 plays a role in hippocampal activity., (© 2023 International Society for Neurochemistry.)
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- 2023
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41. Study Preregistration: Measuring What Matters: Development and Dissemination of a Core Outcome Set for Pediatric Anxiety Disorders Clinical Trials.
- Author
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Monga S, Desai R, Anthony SJ, Arnold PD, Bagnell A, Birmaher B, Campbell LA, Churchill R, Cleverley K, Courtney DB, Dimitropoulos G, Hetrick SE, Krause KR, Mokkink LB, Patten SB, Patton MC, Prebeg MJ, Potter BK, Romanchych E, Shah JL, Smith M, Stewart SE, Szatmari P, Tricco AC, Tugwell P, Walkup JT, Welch VA, Zima BT, Butcher NJ, and Offringa M
- Subjects
- Adolescent, Humans, Child, Delphi Technique, Endpoint Determination, Outcome Assessment, Health Care, Treatment Outcome, Research Design, Anxiety Disorders therapy
- Abstract
Pediatric anxiety disorders (AD) are prevalent disorders with an impact on all aspects of a child's life and functioning.
1 Although evidence supports commonly used treatments, there are notable concerns with the research to date.2 Heterogeneity in outcome selection, measurement, analysis, and reporting is a contributing factor to the hinderance of the translation of research into clinical practice.3 Recognition for outcome standardization in pediatric mental health disorders is evolving and there are several initiatives of importance, including the International Consortium for Health Outcomes Measurement (ICHOM), which has developed standardized outcome sets for use in the routine clinical mental health treatment of children and adolescents.4 Similarly, the International Alliance of Mental Health Research Funders5 advocate for use of 1 specific outcome measurement instrument (OMI) in the youth mental health research that they fund. Development of a Core Outcome Set (COS), a minimal set of outcomes that should be measured and reported in clinical trials, has been a solution in other areas of medicine to address heterogeneity in outcome selection and measurement across trials.6 The Core Outcomes and Measures in Pediatric Anxiety Clinical Trials (COMPACT) Initiative will develop a harmonized, evidence- and consensus-based COS that is meaningful to youth and families for use in future trials in pediatric AD., (Copyright © 2023 American Academy of Child and Adolescent Psychiatry. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
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42. Layer-specific mitochondrial diversity across hippocampal CA2 dendrites.
- Author
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Pannoni KE, Gil D, Cawley ML, Alsalman MM, Campbell LA, and Farris S
- Subjects
- Neurons metabolism, Dendrites physiology, Synapses physiology, Calcium metabolism, Hippocampus metabolism, Mitochondria metabolism
- Abstract
CA2 is an understudied subregion of the hippocampus that is critical for social memory. Previous studies identified multiple components of the mitochondrial calcium uniporter (MCU) complex as selectively enriched in CA2. The MCU complex regulates calcium entry into mitochondria, which in turn regulates mitochondrial transport and localization to active synapses. We found that MCU is strikingly enriched in CA2 distal apical dendrites, precisely where CA2 neurons receive entorhinal cortical input carrying social information. Furthermore, MCU-enriched mitochondria in CA2 distal dendrites are larger compared to mitochondria in CA2 proximal apical dendrites and neighboring CA1 apical dendrites, which was confirmed in CA2 with genetically labeled mitochondria and electron microscopy. MCU overexpression in neighboring CA1 led to a preferential localization of MCU in the proximal dendrites of CA1 compared to the distal dendrites, an effect not seen in CA2. Our findings demonstrate that mitochondria are molecularly and structurally diverse across hippocampal cell types and circuits, and suggest that MCU can be differentially localized within dendrites, possibly to meet local energy demands., (© 2023 The Authors. Hippocampus published by Wiley Periodicals LLC.)
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- 2023
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43. Implementation of a Knowledge Management System in Mental Health and Addictions: Mixed Methods Case Study.
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Chorney J, Johnson Emberly D, Jeffrey J, Hundert A, Pakkanlilar O, Abidi S, Bagnell A, Brennan M, Campbell LA, Clark S, Bradley K, and Ross O
- Abstract
Background: Mental health and addictions (MHA) care is complex and individualized and requires coordination across providers and areas of care. Knowledge management is an essential facilitator and common challenge in MHA services., Objective: This paper aimed to describe the development of a knowledge management system (KMS) and the associated processes in 1 MHA program. We also aimed to examine the uptake and use, satisfaction, and feedback on implementation among a group of pilot testers., Methods: This project was conducted as a continuous quality-improvement initiative. Integrated stakeholder engagement was used to scope the content and design the information architecture to be implemented using a commercially available knowledge management platform. A group of 30 clinical and administrative staff were trained and tested with the KMS over a period of 10 weeks. Feedback was collected via surveys and focus groups. System analytics were used to characterize engagement. The content, design, and full-scale implementation planning of the KMS were refined based on the results., Results: Satisfaction with accessing the content increased from baseline to after the pilot. Most testers indicated that they would recommend the KMS to a colleague, and satisfaction with KMS functionalities was high. A median of 7 testers was active each week, and testers were active for a median of 4 days over the course of the pilot. Focus group themes included the following: the KMS was a solution to problems for staff members, functionality of the KMS was important, quality content matters, training was helpful and could be improved, and KMS access was required to be easy and barrier free., Conclusions: Knowledge management is an ongoing need in MHA services, and KMSs hold promise in addressing this need. Testers in 1 MHA program found a KMS that is easy to use and would recommend it to colleagues. Opportunities to improve implementation and increase uptake were identified. Future research is needed to understand the impact of KMSs on quality of care and organizational efficiency., (©Jill Chorney, Debbie Johnson Emberly, Jennifer Jeffrey, Amos Hundert, Onur Pakkanlilar, Sabina Abidi, Alexa Bagnell, Maureen Brennan, Leslie Anne Campbell, Sharon Clark, Kristina Bradley, Olivia Ross. Originally published in JMIR Formative Research (https://formative.jmir.org), 06.02.2023.)
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- 2023
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44. Model of severe malaria in young mice suggests unique response of CD4 T cells.
- Author
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Smith MR, Gbedande K, Johnson CM, Campbell LA, Onjiko RS, Domingo ND, and Opata MM
- Subjects
- Animals, Mice, Mice, Inbred C57BL, Th1 Cells immunology, Disease Models, Animal, Nervous System Diseases etiology, CD4-Positive T-Lymphocytes immunology, Malaria complications, Malaria immunology, Plasmodium chabaudi
- Abstract
Severe malaria occurs most in young children but is poorly understood due to the absence of a developmentally-equivalent rodent model to study the pathogenesis of the disease. Though functional and quantitative deficiencies in innate response and a biased T helper 1 (Th1) response are reported in newborn pups, there is little information available about this intermediate stage of the adaptive immune system in murine neonates. To fill this gap in knowledge, we have developed a mouse model of severe malaria in young mice using 15-day old mice (pups) infected with Plasmodium chabaudi. We observe similar parasite growth pattern in pups and adults, with a 60% mortality and a decrease in the growth rate of the surviving young mice. Using a battery of behavioral assays, we observed neurological symptoms in pups that do not occur in infected wildtype adults. CD4
+ T cells were activated and differentiated to an effector T cell (Teff) phenotype in both adult and pups. However, there were relatively fewer and less terminally differentiated pup CD4+ Teff than adult Teff. Interestingly, despite less activation, the pup Teff expressed higher T-bet than adults' cells. These data suggest that Th1 cells are functional in pups during Plasmodium infection but develop slowly., (© 2022 The Authors. Parasite Immunology published by John Wiley & Sons Ltd.)- Published
- 2022
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45. Trends and biases in African large carnivore population assessments: identifying priorities and opportunities from a systematic review of two decades of research.
- Author
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Strampelli P, Campbell LA, Henschel P, Nicholson SK, Macdonald DW, and Dickman AJ
- Subjects
- Animals, Endangered Species, South Africa, Carnivora, Canidae, Hyaenidae, Lions
- Abstract
African large carnivores have undergone significant range and population declines over recent decades. Although conservation planning and the management of threatened species requires accurate assessments of population status and monitoring of trends, there is evidence that biodiversity monitoring may not be evenly distributed or occurring where most needed. Here, we provide the first systematic review of African large carnivore population assessments published over the last two decades (2000-2020), to investigate trends in research effort and identify knowledge gaps. We used generalised linear models (GLMs) and generalised linear mixed models (GLMMs) to identify taxonomic and geographical biases, and investigated biases associated with land use type and author nationality. Research effort was significantly biased towards lion ( Panthera leo ) and against striped hyaena ( Hyaena hyaena ), despite the latter being the species with the widest continental range. African wild dog ( Lycaon pictus ) also exhibited a negative bias in research attention, although this was partly explained by its relatively restricted distribution. The number of country assessments for a species was significantly positively associated with its geographic range in that country. Population assessments were biased towards southern and eastern Africa, particularly South Africa and Kenya. Northern, western, and central Africa were generally under-represented. Most studies were carried out in photographic tourism protected areas under government management, while non-protected and trophy hunting areas received less attention. Outside South Africa, almost half of studies (41%) did not include authors from the study country, suggesting that significant opportunities exist for capacity building in range states. Overall, large parts of Africa remain under-represented in the literature, and opportunities exist for further research on most species and in most countries. We develop recommendations for actions aimed at overcoming the identified biases and provide researchers, practitioners, and policymakers with priorities to help inform future research and monitoring agendas., Competing Interests: The authors declare that they have no competing interests., (© 2022 Strampelli et al.)
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- 2022
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46. Choice and Partnership Approach to community mental health and addiction services: a realist-informed scoping review.
- Author
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Campbell LA, Clark SE, Chorney J, Emberly D, MacDonald J, MacKenzie A, Warner G, and Wozney L
- Subjects
- Adolescent, Adult, Humans, Leadership, Mental Health, Mental Health Services
- Abstract
Objectives: The Choice and Partnership Approach (CAPA) was developed to create an accessible, child-centred and family-centred model of child and adolescent mental health service delivery that is adaptable to different settings. We sought to describe the state of evidence regarding the extent, outcomes and contextual considerations of CAPA implementation in community mental health services., Design: Scoping review., Data Sources: Published and grey literature were searched using MEDLINE, Embase, CINAHL, PsycINFO, Scopus and Google to 13 and 20 July 2022, respectively., Eligibility Criteria: We included reports focused on the implementation, outcomes (clinical, programme or system) or a discussion of contextual factors that may impact CAPA implementation in either child and adolescent or adult mental health services., Data Extraction and Synthesis: Data were extracted using a codebook that reflected the five domains of the Consolidated Framework for Implementation Research (CFIR) and reviewed for agreement and accuracy. Data were synthesised according to the five CFIR domains., Results: Forty-eight reports describing 36 unique evaluations were included. Evaluations were observational in nature; 10 employed pre-post designs. CAPA implementation, regardless of setting, was largely motivated by long wait times. Characteristics of individuals (eg, staff buy-in or skills) were not reported. Processes of implementation included facilitative leadership, data-informed planning and monitoring and CAPA training. Fidelity to CAPA was infrequently measured (n=9/36) despite available tools. Health system outcomes were most frequently reported (n=28/36); few evaluations (n=7/36) reported clinical outcomes, with only three reporting pre/post CAPA changes., Conclusions: Gaps in evidence preclude a systematic review and meta-analysis of CAPA implementation. Measurement of clinical outcomes represents an area for significant improvement in evaluation. Consistent measurement of model fidelity is essential for ensuring the accuracy of outcomes attributed to its implementation. An understanding of the change processes necessary to support implementation would be strengthened by more comprehensive consideration of contextual factors., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2022
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47. Driving toward a culture shift: Case studies of social mission in nursing education.
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Faraz Covelli A, Darcy Mahoney A, Batra S, Beard KV, Campbell LA, and Pittman PP
- Subjects
- Humans, Schools, Nursing, Education, Nursing
- Abstract
Background: Nursing schools need to provide students with the appropriate tools to develop competencies and resources to actualize moral courage to advance health equity and center social mission., Purpose: The purpose of this study was to describe six nursing programs that exemplify a variety of ways that social mission goals are pursued in different contexts., Method: Using a case study approach, we selected nursing schools that excelled in at least one of the following social mission domains: education program, community engagement, governance, diversity & inclusion, institutional culture & climate and research. We conducted video interviews with the administration, faculty and students., Findings: Main themes were: (1) central university/college commitment; (2) allocation of school resources; (3) faculty buy-in; (4) community partnerships; and, (5) an institutional culture of inclusion., Discussion: While each school approaches social mission differently, there are commonalities across cases including a number of necessary factors for schools to advance their social mission goals., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
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48. Enumeration of Public Health Nurses in the United States: Limits of Current Standards.
- Author
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Kneipp SM, Edmonds JK, Cooper J, Campbell LA, Little SH, and Mix AK
- Subjects
- Humans, Public Health Nursing, United States, Nurses, Public Health
- Abstract
Recent national initiatives in nursing and public health have emphasized the need for a robust public health nursing (PHN) workforce. In this article, we analyze the extent to which recent national enumeration surveys base their counts of this workforce on the definitions, scope, and standards for practice and practice competencies of the PHN nursing specialty. By and large, enumeration surveys continue to rely on practice setting to define the PHN workforce, which is an insufficient approach for meeting the goals of major nursing and public health initiatives. We make recommendations for the development of new standards for PHN enumeration to strengthen the broader public health infrastructure and evaluate PHN contributions to population-level outcomes. ( Am J Public Health . 2022;112(S3):S292-S297. https://doi.org/10.2105/AJPH.2022.306782).
- Published
- 2022
- Full Text
- View/download PDF
49. Combination therapy with remdesivir and monoclonal antibodies protects nonhuman primates against advanced Sudan virus disease.
- Author
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Cross RW, Bornholdt ZA, Prasad AN, Woolsey C, Borisevich V, Agans KN, Deer DJ, Abelson DM, Kim DH, Shestowsky WS, Campbell LA, Bunyan E, Geisbert JB, Dobias NS, Fenton KA, Porter DP, Zeitlin L, and Geisbert TW
- Subjects
- Adenosine Monophosphate analogs & derivatives, Alanine analogs & derivatives, Animals, Antibodies, Monoclonal, Antibodies, Viral, Humans, Macaca mulatta, Ebolavirus, Hemorrhagic Fever, Ebola drug therapy, Hemorrhagic Fever, Ebola prevention & control, Marburgvirus, Virus Diseases
- Abstract
A major challenge in managing acute viral infections is ameliorating disease when treatment is delayed. Previously, we reported the success of a 2-pronged mAb and antiviral remdesivir therapeutic approach to treat advanced illness in rhesus monkeys infected with Marburg virus (MARV). Here, we explored the benefit of a similar combination therapy for Sudan ebolavirus (Sudan virus; SUDV) infection. Importantly, no licensed anti-SUDV therapeutics currently exist, and infection of rhesus macaques with SUDV results in a rapid disease course similar to MARV with a mean time to death of 8.3 days. When initiation of therapy with either remdesivir or a pan-ebolavirus mAb cocktail (MBP431) was delayed until 6 days after inoculation, only 20% of macaques survived. In contrast, when remdesivir and MBP431 treatment were combined beginning 6 days after inoculation, significant protection (80%) was achieved. Our results suggest that combination therapy may be a viable treatment for patients with advanced filovirus disease that warrants further clinical testing in future outbreaks.
- Published
- 2022
- Full Text
- View/download PDF
50. The first line of prevention: A public health nursing advocacy video.
- Author
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Schaer JM, Campbell LA, and Thomas LJ
- Subjects
- Humans, Pandemics prevention & control, Public Health Nursing education, Workforce, COVID-19 prevention & control, Nurses, Public Health
- Abstract
Public health nurses (PHNs) serve as the first line of prevention in public health and safety threats such as the COVID-19 pandemic. Although PHNs provide vital services to protect communities and populations' health, a pervasive lack of knowledge exists regarding the PHN role among policymakers and the general public. Advocacy for investment in the public health nursing workforce remains a priority as staffing and financial constraints have created sizeable barriers for PHNs during the COVID-19 response. Creating an advocacy video with personal stories from PHNs emerges as a powerful and cost-effective strategy to increase the visibility of PHNs. For this project, interviews with PHNs from COVID-19 hot spots were used to create a 3-min advocacy video. PHNs featured in this video discussed the implications of rerouting resources to combat COVID-19 for the populations they serve. The authors disseminated the video through popular social media venues, public health and nursing organizations and nurse influencers to reach nursing students, faculty, and the public. Over an 8-week period, the video received 2732 views on social media with an average view duration of 2 min. This article includes strategies to maximize the impact of an advocacy video when shared with relevant stakeholders., (© 2021 Wiley Periodicals LLC.)
- Published
- 2022
- Full Text
- View/download PDF
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