| 1. |
- Andersson, P, et al.
(författare)
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Clinical correlates of oral impacts on daily performances.
- 2010
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Ingår i: International journal of dental hygiene. - : Wiley. - 1601-5037 .- 1601-5029. ; 8:3, s. 219-26
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate the associations between oral health measures and oral health-related quality of life as captured by OIDP (oral impacts on daily performances).
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| 2. |
- Corvellec, Hervé, 1961, et al.
(författare)
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Organisationers vardag: sett underifrån
- 2010
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Denna bok bygger på berättelser från vardagen ute i olika organisationer - en vardag som förvånansvärt ofta varken är välordnad eller rationell. Berättelserna är skrivna av unga människor och speglar deras kontakter med arbetslivet i dagens Sverige. Tack vare detta underifrånperspektiv ges utrymme för vardagliga tankar och mänskliga känslor, något som lätt försvinner i de teoretiska framställningar som görs i traditionella läroböcker.
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| 3. |
- Gunnarsson, Gunnar, et al.
(författare)
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Zero Prevalence of Influenza A Virus in Two Raptor Species by Standard Screening
- 2010
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Ingår i: Vector-borne and zoonotic diseases. - : Mary Ann Liebert Inc. - 1530-3667 .- 1557-7759. ; 10:4, s. 387-390
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Tidskriftsartikel (refereegranskat)abstract
- Disease can have sever impact on animal populations, especially in rare species. Baseline data for atypical host species are missing for a range of infectious diseases, although such hosts are potentially more affected than the normal vectors and reservoir species. If highly pathogenic avian influenza strikes rare birds of prey, this may have crucial impact on the predator species itself, but also on the food web in which it interacts. Here we present the first large-scale screening of raptors that regularly consume birds belonging to the natural reservoir of influenza A viruses. Influenza A virus prevalence was studied in two rare raptors, the white-tailed sea eagle (Haliaetus albicilla) and the peregrine falcon (Falco peregrinus). Nestlings were screened for active (181 white-tailed sea eagles and 168 peregrine falcons) and past (123 white-tailed sea eagles and 6 peregrine falcons) infection in 2006-2007, and an additional 20 succumbed adult white-tailed sea eagles were sampled in 2003-2006. Neither high- nor low-pathogenic influnza infections were found in our sample, but this does not rule out that the former may have major impact on rare raptors and their food webs.
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| 4. |
- Hernroth, Bodil, 1951, et al.
(författare)
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Possibility of Mixed Progenitor Cells in Sea Star Arm Regeneration
- 2010
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Ingår i: Journal of Experimental Zoology Part B-Molecular and Developmental Evolution. - : Wiley. - 1552-5007 .- 1552-5015. ; 314B:6, s. 457-468
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Tidskriftsartikel (refereegranskat)abstract
- In contrast to most vertebrates, invertebrate deuterostome echinoderms, such as the sea star Asterias rubens, undergo regeneration of lost body parts. The current hypothesis suggests that differentiated cells are the main source for regenerating arm in sea stars, but there is little information regarding the origin and identity of these cells. Here, we show that several organs distant to the regenerating arm responded by proliferation, most significantly in the coelomic epithelium and larger cells of the pyloric caeca. Analyzing markers for proliferating cells and parameters indicating cell ageing, such as levels of DNA damage, pigment, and lipofuscin contents as well as telomere length and telomerase activity, we suggest that cells contributing to the new arm likely originate from progenitors rather than differentiated cells. This is the first study showing that cells of mixed origin may be recruited from more distant sources of stem/progenitor cells in a sea star, and the first described indication of a role for pyloric caeca in arm regeneration. Data on growth rate during arm regeneration further indicate that regeneration is at the expense of whole animal growth. We propose a new working hypothesis for arm regeneration in sea stars involving four phases: wound healing by coelomocytes, migration of distant progenitor cells of mixed origin including from pyloric caeca, proliferation in these organs to compensate for cell loss, and finally, local proliferation in the regenerating arm J. Exp. Zool. (Mol. Dev. Evol.) 3148:457-468, 2010. (C) 2010 Wiley-Liss, Inc.
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| 5. |
- Holm, K., et al.
(författare)
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Functional properties of proteins from the coelomic fluid of the wounded sea star Asterias rubens (L)
- 2010
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Ingår i: Journal of Invertebrate Pathology. - : Academic Press Inc.. - 0022-2011 .- 1096-0805. ; 105, s. 197-199
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Tidskriftsartikel (refereegranskat)abstract
- Impact on viability and adhesion of three protein fractions, separated by size, from the coelomic fluid of wounded Asterias rubens′, was tested on autologous coelomocytes. In addition antimicrobial property of the protein fractions was tested on the Gram-negative bacterium Vibrio parahaemolyticus. All fractions promoted viability and the larger proteins facilitated adhesion of the coelomocytes. The strongest antimicrobial effect was caused by the fraction with the smallest proteins.
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| 6. |
- Magnusson, A., et al.
(författare)
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The Rock Cycle – a complex object of learning
- 2010
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Ingår i: Interntional Multi-Conference on Society, Cybernetics and Informatics. June 29th – July 2nd, 2010 – Orlando, Florida, USA. International Institute of informatics and Systemics.. ; 1
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Konferensbidrag (refereegranskat)
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| 7. |
- Oweson, Carolina A. M., 1976, et al.
(författare)
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Effects of manganese and hypoxia on coelomocyte renewal in the echinoderm, Asterias rubens (L.)
- 2010
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Ingår i: Aquatic Toxicology. - : Elsevier BV. - 0166-445X .- 1879-1514. ; 100:1, s. 84-90
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Tidskriftsartikel (refereegranskat)abstract
- Manganese (Mn) is a naturally abundant metal and particularly so in soft-bottom oceanic sediments where it generally occurs bound in a four-valent colloidal state as MnO2. When hypoxic conditions occur in bottom waters, the metal reduces to the bioavailable ion Mn2+ and can reach concentrations known to have immunotoxic effects in the crustacean Nephrops norvegicus, reducing numbers of circulating haemocytes as a consequence. However, we have previously shown that Mn seems to have a contrasting effect on the echinoderm Asterias rubens in which it triggers the proliferation of haematopoietic cells and increases coelomocyte numbers. Since elevated Mn levels mostly co-occur with hypoxia in nature, here we investigated whether hypoxia has a negative effect on haematopoiesis. Proliferation and differentiation of coelomocytes and cells in the coelomic epithelium of A. rubens were compared after 3 days of exposure to realistic levels of Mn, hypoxia or a combination of these two parameters. We can confirm that Mn elevated numbers of coelomocytes and increased proliferation of epithelial cells, but hypoxia did not affect these levels. However, hypoxia did affect differentiation of these cells as judged by investigating the expression of a Runt domain transcription factor, which was also cloned and sequenced. Through comparative quantification using a real time PCR technique, we found that exposure to hypoxia had a clearly stimulating effect on mRNA expression of Runt gene in both coelomocytes and epithelial cells. These results indicate that during hypoxic conditions the composition of coelomocyte sub-populations changed. (c) 2010 Elsevier B.V. All rights reserved.
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| 8. |
- Rehnstam-Holm, Ann-Sofi, 1959, et al.
(författare)
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Association between Phytoplankton and Vibrio spp along the southwest coast of India- a mesocosm experiment.
- 2010
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Ingår i: Aquatic Microbial Ecology. - : Inter-Research. - 0948-3055 .- 1616-1564. ; 58, s. 127-139
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Tidskriftsartikel (refereegranskat)abstract
- We report the results from a mesocosm study investigating the interrelationship between microalgae and vibrios. The mesocosms were inoculated with plankton, plankton + sediment, or sediment. We followed the diatom bloom and increases in the abundance of Vibrio spp. and V parahaemolyticus in conjunction with several environmental variables in all mesocosms and at a reference site. The dominating diatom genera were also identified. Temperature, salinity, and pH were nearly invariant in the mesocosms and did not contribute to the results. The principal environmental variables that correlated to vibrio abundance were total bacterial plate counts, phosphorus and ammonia (positive relationship), and oxygen and silica (negative). Nitrate, total bacterial counts and chlorophyll a (chl a) did not correlate with vibrio growth. The highest diatom abundances were followed by increases in vibrios in all mesocosms. This was also observed in field sampling. Together, these results suggest that diatom blooms could support Vibrio spp. growth. V parahaemolyticus was initially favoured by sediment. The contribution of V parahaemolyticus to the total bacterial population was low, on average 0.5 %, but constituted a rather high proportion of the vibrio population in the mesocosm systems, i.e. on average 18 %. Some of the identified diatom genera, e.g. Chaetoceros and Skeletonema, were negatively correlated to vibrios, while Coscinodiscus was positively correlated. The results indicate that phytoplankton blooms, when recorded as high levels of chl a, should be used with caution as predictors for future vibrio epidemics, since the origin of the chl a might have a significant effect on vibrio abundance.
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| 9. |
- Skyvell Nilsson, Maria, et al.
(författare)
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Pedagogical Strategies Used in Clinical Medical Education : An Observational Study
- 2010
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Ingår i: BMC Medical Education. - : Springer Science and Business Media LLC. - 1472-6920. ; 10:9
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Tidskriftsartikel (refereegranskat)abstract
- Background: Clinical teaching is a complex learning situation influenced by the learning content, the setting and the participants' actions and interactions. Few empirical studies have been conducted in order to explore how clinical supervision is carried out in authentic situations. In this study we explore how clinical teaching is carried out in a clinical environment with medical students.Methods: Following an ethnographic approach looking for meaning patterns, similarities and differences in how clinical teachers manage clinical teaching; non-participant observations and informal interviews were conducted during a four month period 2004-2005. The setting was at a teaching hospital in Sweden. The participants were clinical teachers and their 4th year medical students taking a course in surgery. The observations were guided by the aim of the study. Observational notes and notes from informal interviews were transcribed after each observation and all data material was analysed qualitatively.Results: Seven pedagogical strategies were found to be applied, namely: 1) Questions and answers, 2) Lecturing, 3) Piloting, 4) Prompting, 5) Supplementing, 6) Demonstrating, and 7) Intervening.Conclusions: This study contributes to previous research in describing a repertoire of pedagogical strategies used in clinical education. The findings showed that three superordinate qualitatively different ways of teaching could be identified that fit Ramsden's model. Each of these pedagogical strategies encompass different focus in teaching; either a focus on the teacher's knowledge and behaviour or the student's behaviour and understanding. We suggest that an increased awareness of the strategies in use will increase clinical teachers' teaching skills and the consequences they will have on the students' ability to learn. The pedagogical strategies need to be considered and scrutinized in further research in order to verify their impact on students' learning.
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| 10. |
- Särner, Barbro, 1942, et al.
(författare)
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Recommendations by dental staff and use of toothpicks, dental floss and interdental brushes for approximal cleaning in an adult Swedish population.
- 2010
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Ingår i: Oral health & preventive dentistry. - : Quintessence Publishing Company. - 1602-1622 .- 1757-9996. ; 8:2, s. 185-94
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: The aim of the present study was to evaluate the recommendations relating to the use of approximal cleaning aids given by dental hygienists and dentists, the self-care practices in a Swedish population and the ability to remove dental plaque. MATERIALS AND METHODS: A structured questionnaire was randomly distributed to 500 dental hygienists and 500 dentists and a similar questionnaire was distributed to 1000 randomly selected individuals, divided equally into the following age groups: 15 to 20, 21 to 40, 41 to 60 and > 60 years. A clinical examination evaluating the ability to remove approximal dental plaque was also carried out in a total of 60 regular users of approximal cleaning aids. Plaque was scored before and after cleaning with a toothpick, dental floss or an interdental brush. RESULTS: The response rate was 82%, 79% and 68% for the three groups. The results reveal that dental hygienists give more detailed information about a majority of the aspects that are related to the use of approximal cleaning aids compared with dentists (P < 0.01 or P < 0.001). The majority of the dental staff give recommendations to children and adolescents firstly to prevent dental caries and to older individuals to improve periodontal health. The use of different approximal cleaning aids on a daily basis varied with respect to age group (2% to 42%); dental floss dominated in the younger age groups and interdental brushes in the two oldest groups. In the clinical study, the largest plaque reduction was produced by the interdental brush (83%), followed by toothpicks (74%) and dental floss (73%). CONCLUSIONS: The present study indicated the importance of individual recommendations related to the use of approximal cleaning aids.
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