| 1. |
- Hallström, Hadar, et al.
(författare)
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Probiotic supplements and debridement of peri-implant mucositis : a randomized controlled trial
- 2015
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Ingår i: Acta Odontologica Scandinavica. - : Taylor & Francis. - 0001-6357 .- 1502-3850. ; 74:1, s. 60-66
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Tidskriftsartikel (refereegranskat)abstract
- Objective. The aim of this double-blind randomized placebo-controlled trial was to evaluate the effects of probiotic supplements in adjunct to conventional management of peri-implant mucositis.Materials and methods.Forty-nine adult patients with peri-implant mucositis were consecutively recruited after informed consent. After initial mechanical debridement and oral hygiene instructions, the patients received a topical oil application (active or placebo) followed by twice-daily intake of lozenges (active or placebo) for 3 months. The active products contained a mix of two strains of Lactobacillus reuteri. Patients were clinically monitored and sampled at baseline and after 1, 2, 4, 12 and 26 weeks. The clinical end-points were pocket-probing depth (PPD), plaque index (PI) and bleeding on probing (BOP). In addition, the subgingival microbiota was processed with checkerboard DNA-DNA hybridization and samples of gingival crevicular fluid (GCF) were analyzed for selected cytokines with the aid of multiplex immunoassays.Results.After 4 and 12 weeks, all clinical parameters were improved in both the test and the placebo group. PPD and BOP were significantly reduced compared with baseline (p < 0.05), but no significant differences were displayed between the groups. The clinical improvements persisted 3 months after the intervention. No major alterations of the subgingival microflora were disclosed and the levels of inflammatory mediators in GCF did not differ between the groups.Conclusions.Mechanical debridement and oral hygiene reinforcement resulted in clinical improvement of peri-implant mucositis and a reduction in cytokine levels. Probiotic supplements did not provide added benefit to placebo.
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| 2. |
- Widén, Cecilia, et al.
(författare)
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Protection of human erythrocytes against oxidative stress by berries
- 2012
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Ingår i: Journal of Berry Research. - : IOS Press. - 1878-5093 .- 1878-5123. ; 2:3
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Tidskriftsartikel (refereegranskat)abstract
- Berries contain several bioactive compounds that can protect against oxidative stress. In this study we evaluated the protective effect of different sequential extracts (ethyl acetate, ethanol and water) of seven berry species: bilberry (Vaccinium myrtillus), blackcurrant (Ribes nigrum), elderberry (Sambucus nigra), lingonberry (Vaccinium vitis-idaea), rose hips (Rosa sp.), sea buckthorn (Hippohae rhamnoides) and strawberry (Fragaria × ananassa). The protective effect was tested on human erythrocytes and the antioxidant capacity was also evaluated in vitro by the FRAP assay. In the erythrocyte assay all sea buckthorn extracts were superior in antioxidant effect to other berry extracts. The ethyl acetate extract of bilberries, and the ethanol and water extracts of blackcurrants, also protected the erythrocytes from oxidation. In contrast, water extracts of rose hips, bilberries and strawberries had a pro-oxidant effect on erythrocytes. The water extract of rose hips was superior to the other berry extracts in the FRAP assay. Thus, the results of the erythrocyte assay did not correlate with the results of the FRAP assay, but provided additional insights into the potential protective effects of berry extracts against oxidative stress.
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| 3. |
- Taal, H. Rob, et al.
(författare)
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Common variants at 12q15 and 12q24 are associated with infant head circumference
- 2012
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Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 44:5, s. 532-538
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Tidskriftsartikel (refereegranskat)abstract
- To identify genetic variants associated with head circumference in infancy, we performed a meta-analysis of seven genome-wide association studies (GWAS) (N = 10,768 individuals of European ancestry enrolled in pregnancy and/or birth cohorts) and followed up three lead signals in six replication studies (combined N = 19,089). rs7980687 on chromosome 12q24 (P = 8.1 x 10(-9)) and rs1042725 on chromosome 12q15 (P = 2.8 x 10(-10)) were robustly associated with head circumference in infancy. Although these loci have previously been associated with adult height(1), their effects on infant head circumference were largely independent of height (P = 3.8 x 10(-7) for rs7980687 and P = 1.3 x 10(-7) for rs1042725 after adjustment for infant height). A third signal, rs11655470 on chromosome 17q21, showed suggestive evidence of association with head circumference (P = 3.9 x 10(-6)). SNPs correlated to the 17q21 signal have shown genome-wide association with adult intracranial volume(2), Parkinson's disease and other neurodegenerative diseases(3-5), indicating that a common genetic variant in this region might link early brain growth with neurological disease in later life.
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| 4. |
- Widén, Cecilia, et al.
(författare)
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Antibacterial activity of berry juices, an in vitro study
- 2015
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Ingår i: Acta Odontologica Scandinavica. - Oxon : Taylor & Francis. - 0001-6357 .- 1502-3850. ; 73:7, s. 539-543
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Tidskriftsartikel (refereegranskat)abstract
- ObjectiveThe aim of the present study was to evaluate in vitro antibacterial activities of blackcurrant and sea buckthorn juices on bacteria associated with gingival inflammation.Materials and methodsThe growth of selected bacteria (Streptococcus mitis, Streptococcus mutans, Streptococcus sanguinis, Streptococcus gordonii, Staphylococcus aureus, Staphylococcus epidermidis and Pseudomonas aeruginosa) was studied in vitro on agar plates. The content of phenols in the different extracts was measured with HPLC-ESI-MS.ResultsThe spectrometric analysis identified that the highest level of the single phenols studied was found for ferulic acid (113 μg/ml) in blackcurrant juice. Sea buckthorn contained low levels of selected phenols. Total bacterial inhibition for all bacterial species studied was found at 20% berry juice concentration with pH varying between 4.1-5.4.ConclusionsThe present study identified that in vitro bacterial growth on agar plates was inhibited by blackcurrant and sea buckthorn juices and that low juice pH explains bacterial in vitro growth. This may have clinical implications in biofilm development, reducing the risks for both tooth decay and gingivitis.
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| 5. |
- Widén, Cecilia, et al.
(författare)
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Consumption of bilberries controls gingival inflammation
- 2015
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Ingår i: International Journal of Molecular Sciences. - 1661-6596 .- 1422-0067. ; 16:5, s. 10665-73
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Tidskriftsartikel (refereegranskat)abstract
- Bioactive molecules in berries may be helpful in reducing the risk of oral diseases. The aim of this study was to determine the effect of bilberry consumption on the outcome of a routine dental clinical parameter of inflammation, bleeding on probing (BOP), as well as the impact on selected biomarkers of inflammation, such as cytokines, in gingival crevicular fluid (GCF) in individuals with gingivitis. Study individuals who did not receive standard of care treatment were allocated to either a placebo group or to groups that consumed either 250 or 500 g bilberries daily over seven days. The placebo group consumed an inactive product (starch). A study group, receiving standard of care (debridement only) was also included to provide a reference to standard of care treatment outcome. Cytokine levels were assayed using the Luminex MagPix system. The mean reduction in BOP before and after consumption of test product over 1 week was 41% and 59% in the groups that consumed either 250 or 500 g of bilberries/day respectively, and was 31% in the placebo group, and 58% in the standard of care reference group. The analysis only showed a significant reduction in cytokine levels in the group that consumed 500 g of bilberries/day. A statistically significant reduction was observed for IL-1b (p = 0.025), IL-6 (p = 0.012) and VEGF (p = 0.017) in GCF samples in the group that consumed 500 g of bilberries daily. It appears that berry intake has an ameliorating effect on some markers of gingival inflammation reducing gingivitis to a similar extent compared to standard of care.
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| 6. |
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| 7. |
- Adelmann, Kenneth, et al.
(författare)
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Språkutveckling, medier och demokrati
- 2014
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Ingår i: Medie- och informationskunnighet i Norden. - Göteborg : Nordicom. - 9789186523886 ; , s. 117-129
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 8. |
- Adelmann, Kent, et al.
(författare)
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Språkutveckling, medier och demokrati
- 2014
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Ingår i: Medie- och informationskunnighet i Norden. - : Nordicom. - 9789186523886 ; , s. 117-121
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Vi som har skrivit denna artikel är alla verksamma inom forskningsmiljön Svenska med didaktisk inriktning (SMDI) vid Malmö högskola. Frågor om språkutveckling i bred bemärkelse står här i centrum. För närvarande är vi engagerade i projektet ”SMDI och lärande i medielandskapet 2.0”. Vår teoretiska plattform kan beskrivas som medieekologisk, vilket kortfattat uttryckt innebär att vi är intresserade av de mångfaldiga och komplexa relationerna mellan medier och kommunikativa kompetenser (Elmfeldt & Erixon 2007; Erixon 2012; Hayles 2002). Dessa relationer förstås därför inte, som så ofta annars i skolsammanhang, i termer av enkelriktad påverkan eller effekter (exempelvis datorns och internets negativa inverkan på skriftspråket). Vår huvudpoäng i denna artikel är att medie- och informationskunnighet, MIK, handlar om, borde handla om, framför allt två saker: språkutveckling och demokrati.
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| 9. |
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| 10. |
- Barclay, C J, et al.
(författare)
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Efficiency of cross-bridges and mitochondria in mouse cardiac muscle
- 2010
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Ingår i: Muscle biophysics. - : Springer Berlin/Heidelberg. - 9781441963659 - 9781441963666 ; , s. 267-278
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Bokkapitel (refereegranskat)abstract
- The aim of this study was to make cellular-level measurements of the mechanical efficiency of mouse cardiac muscle and to use these measurements to determine (1) the work performed by a cross-bridge in one ATP-splitting cycle and (2) the fraction of the free energy available in metabolic substrates that is transferred by oxidative phosphorylation to free energy in ATP (i.e. mitochondrial thermodynamic efficiency). Experiments were performed using isolated left ventricular mouse papillary muscles (n = 9; studied at 27°C) and the myothermic technique. The production of work and heat was measured during and after 40 contractions at a contraction frequency of 2 Hz. Each contraction consisted of a brief isometric period followed by isovelocity shortening. Work output, heat output and enthalpy output were all independent of shortening velocity. Maximum initial mechanical efficiency (mean ± SEM) was 31.1 ± 1.3% and maximum net mechanical efficiency 16.9 ± 1.5%. It was calculated that the maximum work per cross-bridge cycle was 20 zJ, comparable to values for mouse skeletal muscle, and that mitochondrial thermodynamic efficiency was 72%. Analysis of data in the literature suggests that mitochondrial efficiency of cardiac muscle from other species is also likely to be between 70 and 80%.
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