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42 records – page 1 of 5.

Source
Tidsskr Nor Laegeforen. 1994 Oct 30;114(26):3084-6
Publication Type
Article
Date
Oct-30-1994
Author
M. Brekke
T O Kjellevand
G. Smith
Author Affiliation
Klinikk for medisinsk service, Ullevål sykehus, Oslo.
Source
Tidsskr Nor Laegeforen. 1994 Oct 30;114(26):3084-6
Date
Oct-30-1994
Language
Norwegian
Publication Type
Article
Keywords
Adult
Aged
Angioplasty, Transluminal, Percutaneous Coronary - contraindications - instrumentation - methods
English Abstract
Female
Humans
Male
Middle Aged
Mitral Valve Stenosis - radiography - therapy
Abstract
The authors describe the technique of percutaneous balloon mitral valvuloplasty and the results in the first 12 patients treated in Norway. One patient experienced a serious complication, but has later been treated successfully. The average maximal gradient and mean gradient were reduced from 21 mm Hg to 8 mm Hg and from 12 mm Hg to 4 mm Hg respectively. The average size of the valve orifice increased from 1.0 cm2 to 2.2 cm2. Echo-cardiographic follow-up after one year revealed no restenoses. The indications and contraindications are discussed.
PubMed ID
7974430 View in PubMed
Less detail

Beyond arctic and alpine: the influence of winter climate on temperate ecosystems.

https://arctichealth.org/en/permalink/ahliterature272437
Source
Ecology. 2016 Feb;97(2):372-82
Publication Type
Article
Date
Feb-2016
Author
Laura M Ladwig
Zak R Ratajczak
Troy W Ocheltree
Katya A Hafich
Amber C Churchill
Sarah J K Frey
Colin B Fuss
Clare E Kazanski
Juan D Muñoz
Matthew D Petrie
Andrew B Reinmann
Jane G Smith
Source
Ecology. 2016 Feb;97(2):372-82
Date
Feb-2016
Language
English
Publication Type
Article
Abstract
Winter climate is expected to change under future climate scenarios, yet the majority of winter ecology research is focused in cold-climate ecosystems. In many temperate systems, it is unclear how winter climate relates to biotic responses during the growing season. The objective of this study was to examine how winter weather relates to plant and animal communities in a variety of terrestrial ecosystems ranging from warm deserts to alpine tundra. Specifically, we examined the association between winter weather and plant phenology, plant species richness, consumer abundance, and consumer richness in 11 terrestrial ecosystems associated with the U.S. Long-Term Ecological Research (LTER) Network. To varying degrees, winter precipitation and temperature were correlated with all biotic response variables. Bud break was tightly aligned with end of winter temperatures. For half the sites, winter weather was a better predictor of plant species richness than growing season weather. Warmer winters were correlated with lower consumer abundances in both temperate and alpine systems. Our findings suggest winter weather may have a strong influence on biotic activity during the growing season and should be considered in future studies investigating the effects of climate change on both alpine and temperate systems.
PubMed ID
27145612 View in PubMed
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The Canadian National Outcomes Measurement Study in Schizophrenia: overview of the patient sample and methodology.

https://arctichealth.org/en/permalink/ahliterature170225
Source
Acta Psychiatr Scand Suppl. 2006;(430):4-11
Publication Type
Article
Date
2006
Author
G. Smith
A. Malla
R. Williams
L. Kopala
L. Love
R. Balshaw
Author Affiliation
Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada. geoffsm@interchange.ubc.ca
Source
Acta Psychiatr Scand Suppl. 2006;(430):4-11
Date
2006
Language
English
Publication Type
Article
Keywords
Academic Medical Centers - utilization
Adult
Age Factors
Canada
Community Mental Health Centers - utilization
Data Collection - methods
Female
Follow-Up Studies
Health Care Surveys
Health status
Humans
Male
Outcome Assessment (Health Care) - methods
Poverty
Prospective Studies
Psychiatric Status Rating Scales
Psychotropic Drugs - therapeutic use
Quality of Life - psychology
Sample Size
Schizophrenia - drug therapy - economics
Schizophrenic Psychology
Severity of Illness Index
Abstract
The Canadian National Outcomes Measurement Study in Schizophrenia (CNOMSS) is a prospective survey of routine clinical practice.
Patients with schizophrenia or a related disorder were consecutively enrolled from all regions of Canada. Both academic and community psychiatric clinics were included and patients were followed up for 2 years. Clinical and functional status, quality of life, medication and economic costs were assessed at enrollment and monitored throughout the follow-up period.
Patients attending an academic clinic tended to be younger and more severely ill than those from community clinics. Both types of sites prescribed atypical neuroleptics to more than three-quarters of the patients. The majority of those enrolled were unemployed and living in poverty. Poor clinical status was associated with poverty.
The CNOMSS provides demographic, clinical and treatment-related information about a large Canada-wide sample of psychiatric patients. The following three articles in this issue of Acta Psychiatrica Scandinavica explore issues related to medication, quality of life and resource utilization.
PubMed ID
16542320 View in PubMed
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Ceruloplasmin and atrial fibrillation: evidence of causality from a population-based Mendelian randomization study.

https://arctichealth.org/en/permalink/ahliterature106739
Source
J Intern Med. 2014 Feb;275(2):164-71
Publication Type
Article
Date
Feb-2014
Author
S. Adamsson Eryd
M. Sjögren
J G Smith
P M Nilsson
O. Melander
B. Hedblad
G. Engström
Author Affiliation
Department of Clinical Sciences, Lund University, Malmö, Sweden.
Source
J Intern Med. 2014 Feb;275(2):164-71
Date
Feb-2014
Language
English
Publication Type
Article
Keywords
Adult
Atrial Fibrillation - blood - epidemiology - genetics
Biological Markers - blood
Ceruloplasmin - genetics - metabolism
Cohort Studies
Follow-Up Studies
Gene Frequency
Humans
Incidence
Male
Mendelian Randomization Analysis
Middle Aged
Odds Ratio
Polymorphism, Single Nucleotide
Promoter Regions, Genetic
Sweden - epidemiology
Abstract
Inflammatory diseases and inflammatory markers secreted by the liver, including C-reactive protein (CRP) and ceruloplasmin, have been associated with incident atrial fibrillation (AF). Genetic studies have not supported a causal relationship between CRP and AF, but the relationship between ceruloplasmin and AF has not been studied. The purpose of this Mendelian randomization study was to explore whether genetic polymorphisms in the gene encoding ceruloplasmin are associated with elevated ceruloplasmin levels, and whether such genetic polymorphisms are also associated with the incidence of AF.
Genetic polymorphisms in the ceruloplasmin gene (CP) were genotyped in a population-based cohort study of men from southern Sweden (Malmö Preventive Project; n = 3900). Genetic polymorphisms associated with plasma ceruloplasmin concentration were also investigated for association with incident AF (n = 520) during a mean follow-up of 29 years in the same cohort. Findings were replicated in an independent case-control sample (The Malmö AF cohort; n = 2247 cases, 2208 controls).
A single nucleotide polymorphism (rs11708215, minor allele frequency 0.12) located in the CP gene promoter was strongly associated with increased levels of plasma ceruloplasmin (P = 9 × 10(-10) ) and with AF in both the discovery cohort [hazard ratio 1.24 per risk allele, 95% confidence interval (CI) 1.06-1.44, P = 0.006] and the replication cohort (odds ratio 1.13, 95% CI 1.02-1.26, P = 0.02).
Our findings indicate a causal role of ceruloplasmin in AF pathophysiology and suggest that ceruloplasmin might be a mediator in a specific inflammatory pathway that causally links inflammatory diseases and incidence of AF.
Notes
Comment In: J Intern Med. 2014 Feb;275(2):191-424188106
PubMed ID
24118451 View in PubMed
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Chloracne caused by ingestion of olive oil contaminated with PCDDs and PCDFs.

https://arctichealth.org/en/permalink/ahliterature37044
Source
Hum Exp Toxicol. 1991 Sep;10(5):311-22
Publication Type
Article
Date
Sep-1991
Author
A. Rodriguez-Pichardo
F. Camacho
C. Rappe
M. Hansson
A G Smith
J B Greig
Author Affiliation
Departmento de Dermatologia, Universidad de Sevilla, Spain.
Source
Hum Exp Toxicol. 1991 Sep;10(5):311-22
Date
Sep-1991
Language
English
Publication Type
Article
Keywords
Acne Vulgaris - chemically induced
Adult
Animals
Benzofurans - poisoning
Chickens
Child
Child, Preschool
Female
Food contamination - analysis
Humans
Infant, Newborn
Male
Mice
Plant Oils - analysis
Polymers - poisoning
Spain
Tetrachlorodibenzodioxin - analogs & derivatives - poisoning
Abstract
1. All members of a Spanish family (father, mother and six children) developed chloracne. 2. The causative agent was found to be the family's stock of olive oil, which had become contaminated with polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), pentachlorophenol, and hexachlorobenzene. 3. The more highly chlorinated PCDDs, in particular octachlorodibenzo-p-dioxin, were the predominant congeners in the oil. 4. Three members of the family exhibited either an overt or a sub-clinical disturbance of kidney function. The father also had a chronic respiratory problem. These changes could not be unequivocally attributed to the PCDDs. 5. Experimental toxicity of the oil was limited to the development of an hepatic porphyria in mice. 6. A serum sample, taken 5 years after consumption of the oil ceased, contained high levels of the PCDDs and PCDFs. Extrapolation back to ingested dose was used to validate dosage estimates. 7. The use of toxicity equivalence factors (TEFs) provided estimates of cumulative dosage to produce chloracne as 0.13-0.31 micrograms 2378-TCDD kg-1 (using EPA TEFs) or 6.7-16 micrograms 2378-TCDD kg-1 (using Nordic/NATO TEFs). 8. This is the first incident in which human toxicity is related primarily to ingestion of PCDDs and for which estimates of dosage can be made.
PubMed ID
1683543 View in PubMed
Less detail

Community occupancy before-after-control-impact (CO-BACI) analysis of Hurricane Gudrun on Swedish forest birds.

https://arctichealth.org/en/permalink/ahliterature265329
Source
Ecol Appl. 2015 Apr;25(3):685-94
Publication Type
Article
Date
Apr-2015
Author
James C Russell
Martin Stjernman
Åke Lindström
Henrik G Smith
Source
Ecol Appl. 2015 Apr;25(3):685-94
Date
Apr-2015
Language
English
Publication Type
Article
Keywords
Animals
Birds - physiology
Computer simulation
Cyclonic Storms
Ecosystem
Forestry
Forests
Models, Biological
Sweden
Abstract
Resilience of ecological communities to perturbation is important in the face of increased global change from anthropogenic stressors. Monitoring is required to detect the impact of, and recovery from, perturbations, and before-after-control-impact (BACI) analysis provides a powerful framework in this regard. However, species in a community are not observed with perfect detection, and occupancy analysis is required to correct for imperfect detectability of species. We present a Bayesian community occupancy before-after-control-impact (CO-BACI) framework to monitor ecological community response to perturbation when constituent species are imperfectly detected. We test the power of the model to detect changes in community composition following an acute perturbation with simulation. We then apply the model to a study of the impact of a large hurricane on the forest bird community of Sweden, using data from the national bird survey scheme. Although simulation shows the model can detect changes in community occupancy following an acute perturbation, application to a Swedish forest bird community following a major hurricane detected no change in community occupancy despite widespread forest loss. Birds with landscape occupancy less than 50% required correcting for detectability. We conclude that CO-BACI analysis is a useful tool that can incorporate rare species in analyses and detect occupancy changes in ecological communities following perturbation, but, because it does not include abundance, some impacts may be overlooked.
PubMed ID
26214914 View in PubMed
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Consequences of organic farming and landscape heterogeneity for species richness and abundance of farmland birds.

https://arctichealth.org/en/permalink/ahliterature97783
Source
Oecologia. 2010 Apr;162(4):1071-9
Publication Type
Article
Date
Apr-2010
Author
Henrik G Smith
Juliana Dänhardt
Ake Lindström
Maj Rundlöf
Author Affiliation
Animal Ecology, Department of Ecology, Lund University, 223 62 Lund, Sweden. Henrik.Smith@zooekol.lu.se
Source
Oecologia. 2010 Apr;162(4):1071-9
Date
Apr-2010
Language
English
Publication Type
Article
Keywords
Agriculture - economics - methods - statistics & numerical data
Animals
Biodiversity
Breeding
Conservation of Natural Resources - economics - methods - statistics & numerical data
Crops, Agricultural
Diet - veterinary
Health Food
Insects
Invertebrates - growth & development - physiology
Passeriformes - classification - growth & development - physiology
Pesticides
Poaceae - growth & development - physiology
Population Dynamics
Seasons
Seeds - growth & development - physiology
Species Specificity
Sweden
Time Factors
Abstract
It has been suggested that organic farming may benefit farmland biodiversity more in landscapes that have lost a significant part of its former landscape heterogeneity. We tested this hypothesis by comparing bird species richness and abundance during the breeding season in organic and conventional farms, matched to eliminate all differences not directly linked to the farming practice, situated in either homogeneous plains with only a little semi-natural habitat or in heterogeneous farmland landscapes with abundant field borders and semi-natural grasslands. The effect of farm management on species richness interacted with landscape structure, such that there was a positive relationship between organic farming and diversity only in homogeneous landscapes. This pattern was mainly dependent on the species richness of passerine birds, in particular those that were invertebrate feeders. Species richness of non-passerines was positively related to organic farming independent of the landscape context. Bird abundance was positively related to landscape heterogeneity but not to farm management. This was mainly because the abundance of passerines, particularly invertebrate feeders, was positively related to landscape heterogeneity. We suggest that invertebrate feeders particularly benefit from organic farming because of improved foraging conditions through increased invertebrate abundances in otherwise depauperate homogeneous landscapes. Although many seed-eaters also benefit from increased insect abundance, they may also utilize crop seed resources in homogeneous landscapes and conventional farms. The occurrence of an interactive effect of organic farming and landscape heterogeneity on bird diversity will have consequences for the optimal allocation of resources to restore the diversity of farmland birds.
PubMed ID
20213151 View in PubMed
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Developing a video-mediated communication system for hospitalized children.

https://arctichealth.org/en/permalink/ahliterature197796
Source
Telemed J. 1999;5(2):193-208
Publication Type
Article
Date
1999
Author
D I Fels
L A Williams
G. Smith
J. Treviranus
R. Eagleson
Author Affiliation
Polytechnic University, Toronto, Ontario, Canada.
Source
Telemed J. 1999;5(2):193-208
Date
1999
Language
English
Publication Type
Article
Keywords
Attitude
Child
Child, Hospitalized - education - psychology
Computer Terminals
Education, Distance
Feasibility Studies
Female
Humans
Male
Ontario
Program Evaluation
Robotics
Students
Task Performance and Analysis
Abstract
When a student is away from school for an extended time due to illness, he/she is provided with a tutor or access to in-hospital classrooms to keep up with his/her studies. This isolates the child from normal classroom experiences. A remote-control videoconferencing system (VCS), P.E.B.B.L.E.S.trade mark (Providing Education by Bringing Learning Environments to Students), was developed to allow a student access to his/her regular classroom from the hospital. Remote control is provided by a game pad, which allows the student to direct the system. The first iteration, P.E.B. B.L.E.S. I, tested feasibility. The design of P.E.B.B.L.E.S. II provides an integrated version of the system with user interface aimed at children. Four studies examined its efficacy in allowing a student to participate in typical classroom activities and in providing him/her a sense of presence in the classroom. Results indicate that the system can be used with relatively few errors when set to perform the majority of required activities. The study-participants reported positive experiences using the system, and remote users appeared to have a sense of presence in the classroom.
PubMed ID
10908432 View in PubMed
Less detail

Dynamics of body burdens and doses due to internal irradiation from intakes of long-lived radionuclides by residents of Ozyorsk situated near Mayak PA.

https://arctichealth.org/en/permalink/ahliterature276625
Source
J Radiol Prot. 2015 Dec;35(4):789-818
Publication Type
Article
Date
Dec-2015
Author
K G Suslova
S A Romanov
A V Efimov
A B Sokolova
M. Sneve
G. Smith
Source
J Radiol Prot. 2015 Dec;35(4):789-818
Date
Dec-2015
Language
English
Publication Type
Article
Keywords
Adolescent
Adult
Aged
Aged, 80 and over
Body Burden
Female
Humans
Male
Middle Aged
Nuclear Power Plants
Radiation Dosage
Radiation Exposure
Radioisotopes - analysis - metabolism - pharmacokinetics
Russia
Time Factors
Young Adult
Abstract
This paper presents and discusses new autopsy results and other historic data from earlier autopsies and environmental monitoring linked to releases from the Mayak PA facilities in the Chelyabinsk oblast in the southern Urals. The focus is on residents of the town of Ozyorsk located near to Mayak PA and the dynamics of body burdens and radiation doses from inhalation of plutonium alpha and americium-241, and ingestion of strontium-90 and caesium-137. It is demonstrated that accumulation and exposure from these radionuclides was mainly due to unplanned releases in the 1950s and 60s. The mean content of plutonium alpha at the time of autopsy of people commencing residence in Ozyorsk from 1949 to 1959 was about 3.5 Bq, falling to 0.2 Bq in those arriving after 1990. A reducing trend was also seen for (241)Am. The highest (90)Sr content in Ozyorsk residents was measured in 1967. The (137)Cs body content of residents arriving in Ozyorsk at any time was in almost all cases below the limit of detection. The committed effective dose from internal exposure to these long-lived radionuclides which would have been accumulated in Ozyorsk residents if present from 1949 to 2013 is estimated to be 13 mSv. This dose is primarily attributed to intakes during 1949 to 1959 when the annual effective dose rate was approximately 1 mSv y(-1). The current value is about 0.1 mSv y(-1). This dose is about 20 times higher than the dose from global man-made fallout, which is about 0.005 mSv y(-1) at present, but much lower than that from natural background radiation, i.e. about 2 mSv y(-1). The experience gained from this work and continuing activities can contribute to the development of improved international guidance in legacy situations, particularly as regards the provision and use of monitoring data to test and thereby build confidence in prognostic models for radiation conditions and potential future exposures. The scope includes evidence for the rate of reduction in radionuclide concentrations in environmental media and in their bioavailability, resuspension of long-lived alpha radionuclides, uptake of (90)Sr and (137)Cs in the food-chain, and confirmation of cumulative uptake via autopsy and whole body counting measurements. Continuing investigations will thus support decisions on future planned releases and contribute to planning of remediation of other areas affected by historic releases.
PubMed ID
26485118 View in PubMed
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42 records – page 1 of 5.