Health and well-being of Hutterite farmers in Alberta: Results from the Sustainable Farm Families Alberta program.

Introduction: This article describes the health and lifestyle profile of Hutterite farmers in Alberta who participated in a health literacy education program. Methods: Longitudinal quantitative and qualitative data from the sustainable farm families (SFF) Alberta program (2014-2017) were used to describe the health and lifestyle profile of Hutterites. Data were analysed using descriptive statistics and conventional and summative content analysis. Results: Four hundred and twenty-seven Hutterite men and women aged 18-75 years participated in a health literacy education program. About 50%-80% of Hutterites reported good health status, no hearing or sleeping problems, little to no body pain, fewer breathing and bladder difficulties and no constipation/diarrhoea. On average, the risk of diabetes was low (mean = 3.4) with total glucose (mean = 5.2) and cholesterol (mean = 3.5) within normal levels. Mental health outcomes such as anxiety (mean = 4.1), stress (mean = 6.7) and depression (mean = 3.1) were also within normal to mild ranges. Qualitative data showed that Hutterite farmers are committed to maintaining physical health and adopting strategies to improve mental health and lifestyle behaviours. Conclusion: Hutterites have recognisable health challenges like other rural farming communities but are aware of their physical and mental health challenges and engage in healthy lifestyle behaviours. The Hutterite tenets of living present a perfect ecological setting for sustainable health promotion intervention.

Résumé Introduction: Cet article décrit le profil de santé et de style de vie des agriculteurs huttériens de l'Alberta qui ont participé à un programme d'éducation en littératie en santé. Méthodes: Des données quantitatives et qualitatives longitudinales du programme SFF Alberta (2014 à 2017) ont été utilisées pour décrire le profil de santé et de mode de vie des Huttérites. Les données ont été analysées à l'aide de statistiques descriptives et d'une analyse de contenu conventionnelle et sommative. Résultats: Quatre cent vingt-sept hommes et femmes huttériens âgés de 18 à 75 ans ont participé à un programme d'éducation à la santé. Environ 50 à 80% des Huttériens ont signalé un bon état de santé, aucun problème d'audition ou de sommeil, peu ou pas de douleurs corporelles, moins de difficultés respiratoires et vésicales et pas de constipation/diarrhée. En moyenne, le risque de diabète était faible (moyenne = 3,4) avec une glycémie totale (moyenne = 5,2) et un taux de cholestérol (moyenne = 3,5) à des niveaux normaux. Les résultats en matière de santé mentale tels que l'anxiété (moyenne = 4,1), le stress (moyenne = 6,7) et la dépression (moyenne = 3,1) SE situaient également dans des plages normales à légères. Les données qualitatives ont montré que les agriculteurs huttérites sont déterminés à maintenir leur santé physique et à adopter des stratégies pour améliorer leur santé mentale et leurs habitudes de vie. Conclusion: Les Huttérites ont des problèmes de santé reconnaissables comme les autres communautés agricoles rurales, mais sont conscients de leurs problèmes de santé physique et mentale et adoptent des modes de vie sains. Les principes de vie huttériens présentent un cadre écologique parfait pour une intervention durable de promotion de la santé. Mots-clés: Familles d'agriculteurs durables, santé physique, santé mentale, Huttérites, promotion de la santé.

A Feasibility Study of a Volunteer Navigation Program in the Palliative Context.

AIMS: This mixed methods longitudinal study evaluated Nav-CARE for feasibility, acceptability, ease of use, and satisfaction by older persons and volunteers. METHODS: Nine volunteer navigators visited 23 older persons with serious illness every 3 to 4 weeks for 1 year. Data were collected from volunteer navigators, and older person participants at baseline, during the year- long implementation and post implementation. RESULTS: Volunteer navigators and older persons reported Nav-CARE was easy to use, feasible and acceptable. The majority of older persons agreed or strongly agreed that they were satisfied with the navigation services (100%; 8/8), that navigation services were important to them (87%; 7/8), that they would recommend the program to someone else (87%; 7/8), and would participate in the program again (75%; 6/8). Similarly, volunteer navigators reported 100% (9/9) satisfaction with the program, 100% (9/9) would recommend it to others, and 67% (6/8) would participate again. CONCLUSIONS: Nav-CARE appears to be a feasible, acceptable, and satisfactory program for older persons with serious illness and volunteer navigators.

Sustainability of a rural volunteer program (Nav-CARE): a case study.

INTRODUCTION: Nav-CARE (Navigation: Connecting, Accessing, Resourcing and Engaging) is an evidence-based program that was implemented over 1 year in a rural community in western Canada. Nav-CARE uses volunteers who are trained in navigation to facilitate access to resources and provide social support to older persons living in the community with serious illness such as cancer, congestive heart failure and chronic obstructive pulmonary disease. Following implementation in which Nav-CARE was found to be feasible, acceptable and have positive outcomes, Nav-CARE was integrated into the local community-based hospice society program. Two years after a successful implementation, it continued to be sustainable in this same rural community. The purpose of this study was to explore the key factors that facilitated the sustainability of Nav-CARE in a rural hospice society. METHODS: A qualitative single case study design was used with data from several sources collected at different times: (a) pre-implementation, (b) Nav-CARE program implementation (1-year time period), (c) immediately after implementation and (d) 6 months to 2 years after implementation). Data included individual interviews with community stakeholders (n=9), the study volunteer coordinator (n=1), hospice society coordinator (n=1) and Nav-CARE volunteers (n=9). It also included meeting notes of volunteer debriefing sessions and meetings with stakeholders planning for sustainability of Nav-CARE that were held during the 1-year implementation. Data were organized using the i-PARIHS (integrated Promoting Action on Research Implementation in Health Services) framework (a well known implementation framework). Data were analyzed using Yin's qualitative case study approach. RESULTS: The findings from this case study suggested that key factors in facilitating sustainability of a rural community intervention (Nav-CARE) were the organizational context (inner context) and facilitation (facilitator and facilitation processes). Additionally, the inner context included the fit of Nav-CARE with the organization's priorities, the absorptive capacity of the organization, and organizational structure and mechanisms to integrate Nav-CARE into current programs. The hospice society was well established and supported by the rural community. The role of the facilitator and the planned facilitation processes (training of volunteer navigators, ongoing support and planning events) were key factors in the sustainability of the Nav-CARE program. The findings found that the formal role of the facilitator in the implementation and sustainability of Nav-CARE in this rural community required skills and knowledge, as well as ongoing mentorship. As well, the facilitation process for Nav-CARE included formal sustainability planning meetings involving stakeholders. CONCLUSION: Using the i-PARIHS framework and a case study approach, key factors for facilitating sustainability were identified. The role of the facilitator, the facilitation processes and the characteristics of the organizational context were important for the sustainability of Nav-CARE. Future research is needed to understand how to assess and enhance an organization's sustainability capacity and the impact of additional facilitator training and mentoring. This study provides a foundation for future research and adds to the discussion of the issue of sustainability of evidence-based interventions in rural community settings.

Opportunities for better use of collective action theory in research and governance for invasive species management.

Controlling invasive species presents a public-good dilemma. Although environmental, social, and economic benefits of control accrue to society, costs are borne by only a few individuals and organizations. For decades, policy makers have used incentives and sanctions to encourage or coerce individual actors to contribute to the public good, with limited success. Diverse, subnational efforts to collectively manage invasive plants, insects, and animals provide effective alternatives to traditional command-and-control approaches. Despite this work, there has been little systematic evaluation of collective efforts to determine whether there are consistent principles underpinning success. We reviewed 32 studies to identify the extent to which collective-action theories from related agricultural and environmental fields explain collaborative invasive species management approaches; describe and differentiate emergent invasive species collective-action efforts; and provide guidance on how to enable more collaborative approaches to invasive species management. We identified 4 types of collective action aimed at invasive species-externally led, community led, comanaged, and organizational coalitions-that provide blueprints for future invasive species management. Existing collective-action theories could explain the importance attributed to developing shared knowledge of the social-ecological system and the need for social capital. Yet, collection action on invasive species requires different types of monitoring, sanctions, and boundary definitions. We argue that future government policies can benefit from establishing flexible boundaries that encourage social learning and enable colocated individuals and organizations to identify common goals, pool resources, and coordinate efforts.

Oportunidades para un Mejor Uso de la Teoría de Acción Colectiva en la Investigación y el Control del Manejo de Especies Invasoras Resumen El control de especies invasoras es un dilema para el bien público. Aunque los beneficios ambientales, sociales y económicos del control se acoplan a la sociedad, los costos los resuelven unos cuantos individuos y organizaciones. Durante décadas, los legisladores han utilizado incentivos y sanciones para alentar y forzar a los actores individuales a contribuir con el bien público, aunque con un éxito limitado. Los diversos esfuerzos sub-nacionales para manejar colectivamente plantas, insectos y otros animales proporcionan alternativas efectivas a las estratégicas tradicionales de comando y control. A pesar de esta labor, ha habido una evaluación sistemática mínima de los esfuerzos colectivos para determinar si hay principios congruentes que estén respaldando el éxito. Revisamos 32 estudios para identificar la extensión a la cual las teorías de acción colectiva a partir de los campos agrícolas y ambientales relacionados explican las estrategias colaborativas de manejo de especies invasoras; describen y diferencian los esfuerzos de acción colectiva para especies invasoras emergentes; y proporcionan una guía sobre cómo posibilitar estrategias más colaborativas para el manejo de especies invasoras. Identificamos cuatro tipos de acción colectiva enfocada en las especies invasoras - guiada externamente, guiada por la comunidad, co-manejada, y coaliciones organizacionales - que proporcionan los planos para el manejo futuro de especies invasoras. Las teorías existentes de acción colectiva podrían explicar la importancia que se le atribuye al conocimiento compartido en desarrollo sobre los sistemas socio-ecológicos y la necesidad de capital social. Aun así, la acción colectiva sobre las especies invasoras requiere de diferentes tipos de monitoreo, sanciones y definición de los límites. Argumentamos que las próximas políticas gubernamentales pueden beneficiarse del establecimiento de límites flexibles que alientan el aprendizaje social y permiten que individuos y organizaciones colocadas identifiquen objetivos en común, acumulen y compartan recursos y coordinen esfuerzos.

Circulating H3Cit is elevated in a human model of endotoxemia and can be detected bound to microvesicles.

Early diagnosis of sepsis is crucial since prompt interventions decrease mortality. Citrullinated histone H3 (H3Cit), released from neutrophil extracellular traps (NETs) upon binding of platelets to neutrophils following endotoxin stimulation, has recently been proposed a promising blood biomarker in sepsis. Moreover, microvesicles (MVs), which are released during cell activation and apoptosis and carry a variety of proteins from their parental cells, have also been shown to be elevated in sepsis. In a randomized and placebo-controlled human model of endotoxemia (lipopolysaccharide injection; LPS), we now report significant LPS-induced elevations of circulating H3Cit in 22 healthy individuals. We detected elevations of circulating H3Cit by enzyme-linked immunosorbent assay (ELISA), as well as bound to MVs quantified by flow cytometry. H3Cit-bearing MVs expressed neutrophil and/or platelet surface markers, indicating platelet-neutrophil interactions. In addition, in vitro experiments revealed that H3Cit can bind to phosphatidylserine exposed on platelet derived MVs. Taken together; our results demonstrate that NETs can be detected in peripheral blood during endotoxemia by two distinct H3Cit-specific methods. Furthermore, we propose a previously unrecognized mechanism by which H3Cit may be disseminated throughout the vasculature by the binding to MVs.

Developing Navigation Competencies to Care for Older Rural Adults with Advanced Illness.

Navigators help rural older adults with advanced illness and their families connect to needed resources, information, and people to improve their quality of life. This article describes the process used to engage experts - in rural aging, rural palliative care, and navigation - as well as rural community stakeholders to develop a conceptual definition of navigation and delineate navigation competencies for the care of this population. A discussion paper on the important considerations for navigation in this population was developed followed by a four-phased Delphi process with 30 expert panel members. Study results culminated in five general navigation competencies for health care providers caring for older rural persons and their families at end of life: provide patient/family screening; advocate for the patient/family; facilitate community connections; coordinate access to services and resources; and promote active engagement. Specific competencies were also developed. These competencies provide the foundation for research and curriculum development in navigation.

CD40L expression in plasma of volunteers following LPS administration: A comparison between assay of CD40L on platelet microvesicles and soluble CD40L.

CD40 ligand (CD40L) is a transmembrane protein that is mainly expressed on activated T cells and platelets. This protein, however, may also be shed from cells and circulate in the blood in a soluble form. "Soluble CD40L" has attracted interest as a biomarker as it can interact with CD40 and elicit cellular responses involved in the pathophysiology of various thrombotic and inflammatory conditions. As platelets can release microvesicles following activation, we investigated the expression of CD40L on circulating microvesicles as well as CD40L in plasma, in an experimental model of inflammation in healthy volunteers (i.e., intravenous lipopolysaccharide administration). We studied CD40L quantified as CD40L-positive platelet microvesicles by flow cytometry, and as CD40L in plasma ("soluble CD40L") by an ELISA. Results of these studies showed that levels of CD40L exposed on platelet microvesicles were significantly increased after lipopolysaccharide administration. ELISA measurements of CD40L in plasma ("soluble CD40L") did not show any significant increase in plasma levels over time. Separation of soluble and vesicle-bound CD40L by high-speed centrifugation indicated that the ELISA can also detect CD40L on microvesicles, as a trend toward increased concentrations were observed in the pellet of high-speed centrifuged samples (i.e., in samples in which microvesicles are enriched). Together, these findings suggest that platelet microvesicles are a source of CD40L in the circulation and that CD40L exposure on platelet microvesicles increases following experimentally induced inflammation. Our data also suggest that determining levels of CD40L on microvesicles in plasma samples may provide a more sensitive detection of changes in CD40L expression than measurement of "soluble CD40L" in plasma with an ELISA. In addition, information regarding the cellular source of CD40L can be obtained with a flow cytometry-based microvesicle assay in a way not possible with an ordinary ELISA.

No signs of inflammation during knee surgery with ischemia: a study involving inhaled nitric oxide.

Nitric oxide donors and inhaled nitric oxide (iNO) may decrease ischemia/reperfusion injury as reported in animal and human models. We investigated whether the attenuation of reperfusion injury, seen by others, in patients undergoing knee arthroplasty could be reproduced when patients had spinal anesthesia. 45 consecutive patients were randomized into three groups (n = 15). Groups 1 and 3 were receiving iNO 80 ppm or placebo (nitrogen, N2) throughout the entire operation, and group 2 only received iNO in the beginning and at the end of the operation. Blood samples were collected before surgery, at the end of the surgery, and 2 hours postoperatively. Muscle biopsies were taken from quadriceps femoris muscle before and after ischemia. There were no increases in plasma levels of soluble adhesion molecules: ICAM, VCAM, P-selectin, E-selectin, or of HMGB1, in any of the groups. There were low numbers of CD68+ macrophages and of endothelial cells expression of ICAM, VCAM, and P-selectin in the muscle analyzed by immunohistochemistry, prior to and after ischemia. No signs of endothelial cell activation or inflammatory response neither systemically nor locally could be detected. The absence of inflammatory response questions this model of ischemia/reperfusion, but may also be related to the choice of anesthetic method EudraCTnr.

Watershed management and public health: an exploration of the intersection of two fields as reported in the literature from 2000 to 2010.

Watersheds are settings for health and well-being that have a great deal to offer the public health community due to the correspondence between the spatial form of the watershed unit and the importance to health and well-being of water. However, managing watersheds for human health and well-being requires the ability to move beyond typical reductionist approaches toward more holistic methods. Health and well-being are emergent properties of inter-related social and biophysical processes. This paper characterizes points of connection and integration between watershed management and public health and tests a new conceptual model, the Watershed Governance Prism, to determine the prevalence in peer-reviewed literature of different perspectives relating to watersheds and public health. We conducted an initial search of academic databases for papers that addressed the interface between watershed management (or governance) and public health themes. We then generated a sample of these papers and undertook a collaborative analysis informed by the Watershed Governance Prism. Our analysis found that although these manuscripts dealt with a range of biophysical and social determinants of health, there was a tendency for social factors and health outcomes to be framed as context only for these studies, rather than form the core of the relationships being investigated. At least one cluster of papers emerged from this analysis that represented a cohesive perspective on watershed governance and health; "Perspective B" on the Watershed Governance Prism, "water governance for ecosystems and well-being," was dominant. Overall, the integration of watershed management/governance and public health is in its infancy.

Hope against hope: exploring the hopes and challenges of rural female caregivers of persons with advanced cancer.

BACKGROUND: This paper focuses on the qualitative component of a study evaluating a hope intervention, entitled Living with Hope Program (LWHP), designed to foster hope in female caregivers of family members living with advanced cancer. The purpose of this research is to share, in the form of a story, the experiences of rural female caregivers caring for family members with advanced cancer, focusing on what fosters their hope. Hope is a psychosocial and spiritual resource that has been found to help family caregivers live through difficult transitions and challenges. METHODS: Twenty-three participants from rural Western Canada completed daily journal entries documenting their hopes and challenges. Cortazzi's (2001) method of narrative analysis was used to analyze the data, which was then transcribed into a narrative entitled 'hope against hope.' RESULTS: The journal entries highlighted: the caregivers' hopes and what fostered their hope; the various challenges of caregiving; self-care strategies, and; their emotional journey. Hope was integrated throughout their entire experience, and 'hope against hope' describes how hope persists even when there is no hope for a cure. CONCLUSIONS: This research contributes to the assessment of caregiver interventions that impact hope and quality of life, while illustrating the value of a narrative approach to both research and practice. Journaling may be particularly valuable for rural caregivers who are isolated, and may lack direct professional and peer support. There is an opportunity for health professionals and other providers to foster a relationship of trust with family caregivers, in which their story can be told openly and where practitioners pay closer attention to the psychosocial needs of caregivers.

Evaluation of the living with hope program for rural women caregivers of persons with advanced cancer.

BACKGROUND: Hope has been identified as a key psychosocial resource among family caregivers to manage and deal with the caregiver experience. The Living with Hope Program is a self-administered intervention that consists of watching an international award winning Living with Hope film and participating in a two week hope activity ("Stories of the Present"). The purpose of this study was to examine the effects of the Living with Hope Program on self-efficacy [General Self-Efficacy Scale], loss and grief [Non-Death Revised Grief Experience Inventory], hope [Herth Hope Index] and quality of life [Short-Form 12 version 2 (SF-12v2)] in rural women caring for persons with advanced cancer and to model potential mechanisms through which changes occurred. METHODS: A time-series embedded mixed method design was used, with quantitative baseline outcome measures repeated at day 7, day 14, and 3, 6 and 12 months. Qualitative data from the hope activity informed the quantitative data. Thirty-six participants agreed to participate with 22 completing all data collection. General estimating equations were used to analyze the data. RESULTS: Herth Hope Index scores (p=0.05) had increased significantly from baseline at day 7. General Self Efficacy Scale scores were significantly higher than baseline at all data time points. To determine the mechanisms of the Living with Hope Program through which changes occurred, results of the data analysis suggested that as General Self Efficacy Scale scores increased (p<0.001) and Non-death Revised Grief Experience Inventory scores decreased (p=0.01) Herth Hope Index scores increased. In addition as Herth Hope Index scores increased (p<0.001) and Non-death Revised Grief Experience Inventory scores decreased (p=0.01), SF-12v2 mental health summary scores increased. Qualitative data suggested that through the hope activity (Stories of the Present) the participants were able to find positives and hope in their experience. CONCLUSIONS: The Living with Hope Program has potential to increase hope and improve quality of life for rural women caregivers of persons with advanced cancer. The possible mechanisms by which changes in hope and quality of life occur are by decreasing loss and grief and increasing self-efficacy. TRIAL REGISTRATIONS: Registration ClinicalTrials.gov, NCT01081301.

Pharmaceuticals and personal care products in the environment: what are the big questions?

BACKGROUND: Over the past 10-15 years, a substantial amount of work has been done by the scientific, regulatory, and business communities to elucidate the effects and risks of pharmaceuticals and personal care products (PPCPs) in the environment. OBJECTIVE: This review was undertaken to identify key outstanding issues regarding the effects of PPCPs on human and ecological health in order to ensure that future resources will be focused on the most important areas. DATA SOURCES: To better understand and manage the risks of PPCPs in the environment, we used the "key question" approach to identify the principle issues that need to be addressed. Initially, questions were solicited from academic, government, and business communities around the world. A list of 101 questions was then discussed at an international expert workshop, and a top-20 list was developed. Following the workshop, workshop attendees ranked the 20 questions by importance. DATA SYNTHESIS: The top 20 priority questions fell into seven categories: a) prioritization of substances for assessment, b) pathways of exposure, c) bioavailability and uptake, d) effects characterization, e) risk and relative risk, f ) antibiotic resistance, and g) risk management. CONCLUSIONS: A large body of information is now available on PPCPs in the environment. This exercise prioritized the most critical questions to aid in development of future research programs on the topic.

Determinants of medication incident reporting, recovery, and learning in community pharmacies: a conceptual model.

BACKGROUND: Evidence suggests that the underreporting of medication errors and near misses, collectively referred to as medication incidents (MIs), in the community pharmacy setting, is high. Despite the obvious negative implications, MIs present opportunities for pharmacy staff and regulatory authorities to learn from these mistakes and take steps to reduce the likelihood that they reoccur. However, these activities can only take place if such errors are reported and openly discussed. OBJECTIVES: This research proposes a model of factors influencing the reporting, service recovery, and organizational learning resulting from MIs within Canadian community pharmacies. METHODS: The conceptual model is based on a synthesis of the literature and findings from a pilot study conducted among pharmacy management, pharmacists, and pharmacy technicians from 13 community pharmacies in Nova Scotia, Canada. The purpose of the pilot study was to identify various actions that should be taken to improve MI reporting and included staff perceptions of the strengths and weaknesses of their current MI-reporting process, desired characteristics of a new process, and broader external and internal activities that would likely improve reporting. Out of the 109 surveys sent, 72 usable surveys were returned (66.1% response rate). Multivariate analysis of variance found no significant differences among staff type in their perceptions of the current or new desired system but were found for broader initiatives to improve MI reporting. These findings were used for a proposed structural equation model (SEM). RESULTS: The SEM proposes that individual-perceived self-efficacy, MI process capability, MI process support, organizational culture, management support, and regulatory authority all influence the completeness of MI reporting, which, in turn, influences MI service recovery and learning. CONCLUSIONS: This model may eventually be used to enable pharmacy managers to make better decisions. By identifying risk factors that contribute to low MI reporting, recovery, and learning, it will be possible for regulators to focus their efforts on high-risk sectors and begin to undertake preventative educational interventions rather than relying solely on remedial activities.

Generation of priority research questions to inform conservation policy and management at a national level.

Integrating knowledge from across the natural and social sciences is necessary to effectively address societal tradeoffs between human use of biological diversity and its preservation. Collaborative processes can change the ways decision makers think about scientific evidence, enhance levels of mutual trust and credibility, and advance the conservation policy discourse. Canada has responsibility for a large fraction of some major ecosystems, such as boreal forests, Arctic tundra, wetlands, and temperate and Arctic oceans. Stressors to biological diversity within these ecosystems arise from activities of the country's resource-based economy, as well as external drivers of environmental change. Effective management is complicated by incongruence between ecological and political boundaries and conflicting perspectives on social and economic goals. Many knowledge gaps about stressors and their management might be reduced through targeted, timely research. We identify 40 questions that, if addressed or answered, would advance research that has a high probability of supporting development of effective policies and management strategies for species, ecosystems, and ecological processes in Canada. A total of 396 candidate questions drawn from natural and social science disciplines were contributed by individuals with diverse organizational affiliations. These were collaboratively winnowed to 40 by our team of collaborators. The questions emphasize understanding ecosystems, the effects and mitigation of climate change, coordinating governance and management efforts across multiple jurisdictions, and examining relations between conservation policy and the social and economic well-being of Aboriginal peoples. The questions we identified provide potential links between evidence from the conservation sciences and formulation of policies for conservation and resource management. Our collaborative process of communication and engagement between scientists and decision makers for generating and prioritizing research questions at a national level could be a model for similar efforts beyond Canada.

Nitric oxide inhalation and glucocorticoids as combined treatment in human experimental endotoxemia.

OBJECTIVE: Inhaled nitric oxide and glucocorticoids as a combination therapy may attenuate endotoxin-induced inflammatory responses in humans as indicated by levels of cytokines and clinical signs. Since other authors have shown that combined inhaled nitric oxide and steroids improved the histologic damage both in pulmonary and systemic organs in a porcine endotoxin model, we examined if an anti-inflammatory interaction could be demonstrated in humans. DESIGN: Double-blind, crossover, placebo-controlled randomized study. SETTING: The intensive care unit in a university hospital. SUBJECTS: Fifteen healthy white volunteers (4 women, 11 men). INTERVENTIONS: Endotoxin (2 ng/kg) was administered intravenously. Thirty minutes thereafter the volunteers were given glucocorticoids (2 mg/kg) intravenously and inhaled nitric oxide 30 ppm or placebo (nitrogen) administered through a nasal cannula. Blood samples and clinical signs were collected before and up to 5.5 hrs after the endotoxin infusion. MEASUREMENTS AND MAIN RESULT: Following endotoxin body temperature and heart rate increased significantly compared with baseline. There were no differences observed between the treatments. Endotoxin challenge also markedly elevated the plasma levels of tumor necrosis factor-alpha, interleukin (IL)-6, IL-10, and IL1-ra concentrations during the study period. No difference between placebo/glucocorticoids and inhaled nitric oxide/glucocorticoids treatment was seen in the cytokine response. CONCLUSIONS: In a human experimental inflammatory model using endotoxin, inhaled nitric oxide and glucocorticoids in low doses given after the endotoxin challenge did not modify the inflammatory cascade as monitored in this study.

The synthesis rate of albumin decreases during laparoscopic surgery.

In previous studies, a decline in total liver protein synthesis during elective laparoscopic surgery has been observed. However, when albumin synthesis was measured in parallel no apparent influence of the procedure was detected. The aim of the present study was to specifically investigate the effect of a laparoscopic procedure on albumin synthesis. Female (n = 9) patients scheduled for elective laparoscopic cholecystectomy as a consequence of cholecystolithiasis were investigated. The fractional synthesis rate (FSR) of albumin was investigated twice in each patient, before and during surgery (2-3 h apart), employing L-[2H5]phenylalanine and gas chromatography mass spectrometry. The FSR of albumin decreased from 7.3 +/- 1.2% per day before surgery to 6.2 +/- 1.4% per day during the procedure (P<0.01), whereas the corresponding absolute synthesis rates of albumin decreased from 114 +/- 24 to 86 +/- 16 mg kg(-1) day(-1), respectively (P<0.001). In conclusion, the synthesis rate of albumin decreased during a laparoscopic surgery procedure. However, the characteristics for this decrease differ from those previously observed for total liver protein synthesis.

Albumin synthesis in humans increases immediately following the administration of endotoxin.

In order to investigate the immediate (i.e. within 3 h) response of albumin synthesis to the administration of endotoxin, as a model of a moderate and well controlled catabolic insult, two measurements employing L-[(2)H(5)]phenylalanine were performed in 16 volunteers. One group ( n =8) received an intravenous injection of endotoxin (4 ng/kg; lot EC-6) immediately after the first measurement of albumin synthesis, whereas the other group received saline. A second measurement was initiated 1 h later. In the endotoxin group, the fractional synthesis rate of albumin was 6.9+/-0.6%/day (mean+/-S.D.) in the first measurement. In the second measurement, a significant increase was observed (9.6+/-1.2%/day; P <0.001). The corresponding values in the control group were were 6.6+/-0.6%/day and 7.0+/-0.6%/day respectively (not significant compared with first measurement and P <0.001 compared with the second measurement in the endotoxin group). The absolute synthesis rates of albumin were 148+/-35 and 201+/-49 mg x kg(-1) x day(-1) before and after endotoxin ( P <0.01). In the control group, the corresponding values were 131+/-21 and 132+/-20 mg x kg(-1) x day(-1) (not significant compared with the first measurement and P <0.01 compared with the second measurement in the endotoxin group). In conclusion, these results indicate that albumin synthesis increases in the very early phase after a catabolic insult, as represented by the administration of endotoxin.