| 1. |
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| 2. |
- Agardh, Carl-David, et al.
(författare)
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Varning för okritisk användning av överviktskirurgi vid typ 2-diabetes
- 2012
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Ingår i: Läkartidningen. - Stockholm : Läkartidningen förlag. - 0023-7205 .- 1652-7518. ; 109:25, s. 1208-1209
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Tidskriftsartikel (refereegranskat)abstract
- Överviktskirurgi diskuteras nu som ett behandlingsalternativ även för patienter med typ 2-diabetes där BMI inte överstiger nuvarande indikationsgräns 35 kg/m2. Artikelförfattarna vill varna för en sådan utveckling i avvaktan på kritisk värdering av denna typ av kirurgi.
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| 3. |
- Arshad, Rameez, et al.
(författare)
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A kaleidoscope of photosynthetic antenna proteins and their emerging roles
- 2022
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Ingår i: Plant Physiology. - : Oxford University Press. - 0032-0889 .- 1532-2548. ; 189:3, s. 1204-1219
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Tidskriftsartikel (refereegranskat)abstract
- Photosynthetic light-harvesting antennae are pigment-binding proteins that perform one of the most fundamental tasks on Earth, capturing light and transferring energy that enables life in our biosphere. Adaptation to different light environments led to the evolution of an astonishing diversity of light-harvesting systems. At the same time, several strategies have been developed to optimize the light energy input into photosynthetic membranes in response to fluctuating conditions. The basic feature of these prompt responses is the dynamic nature of antenna complexes, whose function readily adapts to the light available. High-resolution microscopy and spectroscopic studies on membrane dynamics demonstrate the crosstalk between antennae and other thylakoid membrane components. With the increased understanding of light-harvesting mechanisms and their regulation, efforts are focusing on the development of sustainable processes for effective conversion of sunlight into functional bio-products. The major challenge in this approach lies in the application of fundamental discoveries in light-harvesting systems for the improvement of plant or algal photosynthesis. Here, we underline some of the latest fundamental discoveries on the molecular mechanisms and regulation of light harvesting that can potentially be exploited for the optimization of photosynthesis.
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| 4. |
- Brännholm Syrjälä, Maria, et al.
(författare)
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Health effects of reduced occupational sedentary behaviour in type 2 diabetes using a mobile health intervention : a study protocol for a 12-month randomized controlled trial—the ROSEBUD study
- 2022
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Ingår i: Trials. - : BioMed Central. - 1745-6215. ; 23:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Short-term trials conducted in adults with type 2 diabetes mellitus (T2DM) showed that reducing sedentary behaviour by performing regular short bouts of light-intensity physical activity enhances health. Moreover, support for reducing sedentary behaviour may be provided at a low cost via mobile health technology (mHealth). There are a wide range of mHealth solutions available including SMS text message reminders and activity trackers that monitor the physical activity level and notify the user of prolonged sitting periods. The aim of this study is to evaluate the effects of a mHealth intervention on sedentary behaviour and physical activity and the associated changes in health in adults with T2DM.Methods: A dual-arm, 12-month, randomized controlled trial (RCT) will be conducted within a nationwide Swedish collaboration for diabetes research in primary health care. Individuals with T2DM (n = 142) and mainly sedentary work will be recruited across primary health care centres in five regions in Sweden. Participants will be randomized (1:1) into two groups. A mHealth intervention group who will receive an activity tracker wristband (Garmin Vivofit4), regular SMS text message reminders, and counselling with a diabetes specialist nurse, or a comparator group who will receive counselling with a diabetes specialist nurse only. The primary outcomes are device-measured total sitting time and total number of steps (activPAL3). The secondary outcomes are fatigue, health-related quality of life and musculoskeletal problems (self-reported questionnaires), number of sick leave days (diaries), diabetes medications (clinical record review) and cardiometabolic biomarkers including waist circumference, mean blood pressure, HbA1c, HDL-cholesterol and triglycerides.Discussion: Successful interventions to increase physical activity among those with T2DM have been costly and long-term effectiveness remains uncertain. The use of mHealth technologies such as activity trackers and SMS text reminders may increase awareness of prolonged sedentary behaviour and encourage increase in regular physical activity. mHealth may, therefore, provide a valuable and novel tool to improve health outcomes and clinical management in those with T2DM. This 12-month RCT will evaluate longer-term effects of a mHealth intervention suitable for real-world primary health care settings.
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| 5. |
- Damkjaer, Jakob, 1976-
(författare)
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Phosphorylation in State Transition : Less cause more effect
- 2011
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Study of the Arabidopsis thaliana knockout mutant lacking Lhcb3 (koLhcb3) have revealed a close similarity to the wild type plants. Growth rate, NPQ, qP, Φ(PSII), circular dichroism spectra, pigment composition and content of LCHII trimers have been found to be unaffected by this mutation. The proteomic analysis shows only some minor increases in the amount of Lhcb1 and Lhcb2. PAM fluorometry revealed a significant increase in the rate of the state 1 to state 2 state transition in the koLhcb3. None the less, the extent of state transition is identical to wild type. Alterations in the PSII-LHCII supercomplex structure have been demonstrated as well. The M-trimer was found to be rotated ~21° CCW. This altered binding of the LHCII M-trimer is likely the cause of the altered affinity resulting in the increased rate of state transition. Proteomic analysis of the phosphorylation of LHCII revealed a significant increase in state 1 and 2 LHCII phosphorylation relative to wild type. Investigation whether phosphorylation or the altered LHCII binding is the cause of the accelerated rate of state transition have not been conclusive so far. A Lhcb6 depleted mutant (koLhcb6) showed a significant alteration of the PSII-LHCII supercomplex structure and photosynthetic acclimation processes. The LHCII M-trimer is depleted in the PSII-LHCII supercomplexes causing the state transition process to be “stuck” in state 2 and the mutants ability to preform NPQ is inhibited as well. The Lhcb6 protein was concluded to be essential for the binding of the LHCII M-trimer to the PSII core as well as energy transfer. The depletion of LHCII M-trimer was linked to the reduced ability to photoacclimate using NPQ as well.
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| 6. |
- Grebe, Steffen, et al.
(författare)
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Specific thylakoid protein phosphorylations are prerequisites for overwintering of Norway spruce (Picea abies) photosynthesis
- 2020
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 117:30, s. 17499-17509
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Tidskriftsartikel (refereegranskat)abstract
- Coping of evergreen conifers in boreal forests with freezing temperatures on bright winter days puts the photosynthetic machinery in great risk of oxidative damage. To survive harsh winter conditions, conifers have evolved a unique but poorly characterized photoprotection mechanism, a sustained form of nonphotochemical quenching (sustained NPQ). Here we focused on functional properties and underlying molecular mechanisms related to the development of sustained NPQ in Norway spruce (Picea abies). Data were collected during 4 consecutive years (2016 to 2019) from trees growing in sun and shade habitats. When day temperatures dropped below -4 degrees C, the specific N-terminally triply phosphorylated LHCB1 isoform (3p-LHCII) and phosphorylated PSBS (p-PSBS) could be detected in the thylakoid membrane. Development of sustained NPQ coincided with the highest level of 3p-LHCII and p-PSBS, occurring after prolonged coincidence of bright winter days and temperatures close to -10 degrees C. Artificial induction of both the sustained NPQ and recovery from naturally induced sustained NPQ provided information on differential dynamics and light-dependence of 3p-LHCII and p-PSBS accumulation as prerequisites for sustained NPQ. Data obtained collectively suggest three components related to sustained NPQ in spruce: 1) Freezing temperatures induce 3p-LHCII accumulation independently of light, which is suggested to initiate destacking of appressed thylakoid membranes due to increased electrostatic repulsion of adjacent membranes; 2) p-PSBS accumulation is both light -and temperature-dependent and closely linked to the initiation of sustained NPQ, which 3) in concert with PSII photoinhibition, is suggested to trigger sustained NPQ in spruce.
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| 7. |
- Grebe, Steffen, et al.
(författare)
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The unique photosynthetic apparatus of Pinaceae : analysis of photosynthetic complexes in Picea abies
- 2019
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Ingår i: Journal of Experimental Botany. - : Oxford University Press. - 0022-0957 .- 1460-2431. ; 70:12, s. 3211-3225
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Tidskriftsartikel (refereegranskat)abstract
- Pinaceae are the predominant photosynthetic species in boreal forests, but so far no detailed description of the protein components of the photosynthetic apparatus of these gymnosperms has been available. In this study we report a detailed characterization of the thylakoid photosynthetic machinery of Norway spruce (Picea abies (L.) Karst). We first customized a spruce thylakoid protein database from translated transcript sequences combined with existing protein sequences derived from gene models, which enabled reliable tandem mass spectrometry identification of P. abies thylakoid proteins from two-dimensional large pore blue-native/SDS-PAGE. This allowed a direct comparison of the two-dimensional protein map of thylakoid protein complexes from P. abies with the model angiosperm Arabidopsis thaliana. Although the subunit composition of P. abies core PSI and PSII complexes is largely similar to that of Arabidopsis, there was a high abundance of a smaller PSI subcomplex, closely resembling the assembly intermediate PSI* complex. In addition, the evolutionary distribution of light-harvesting complex (LHC) family members of Pinaceae was compared in silico with other land plants, revealing that P. abies and other Pinaceae (also Gnetaceae and Welwitschiaceae) have lost LHCB4, but retained LHCB8 (formerly called LHCB4.3). The findings reported here show the composition of the photosynthetic apparatus of P. abies and other Pinaceae members to be unique among land plants.
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| 8. |
- Husdal, Rebecka, et al.
(författare)
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Associations between quality of work features in primary health care and glycaemic control in people with Type 2 diabetes mellitus: A nationwide survey.
- 2019
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Ingår i: Primary care diabetes. - : Elsevier BV. - 1878-0210 .- 1751-9918. ; 13:2, s. 176-186
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Tidskriftsartikel (refereegranskat)abstract
- To describe and analyse the associations between primary health care centres' (PHCCs') quality of work (QOW) and individual HbA1c levels in people with Type 2 diabetes mellitus (T2DM).This cross-sectional study invited all 1152 Swedish PHCCs to answer a questionnaire addressing QOW conditions. Clinical, socio-economic and comorbidity data for 230,958 people with T2DM were linked to data on QOW conditions for 846 (73.4%) PHCCs.Of the participants, 56% had controlled (≤52mmol/mol), 31.9% intermediate (53-69mmol/mol), and 12.1% uncontrolled (≥70mmol/mol) HbA1c. An explanatory factor analysis identified seven QOW features. The features having a call-recall system, having individualized treatment plans, PHCCs' results always on the agenda, and having a follow-up strategy combined with taking responsibility of outcomes/results were associated with lower HbA1c levels in the controlled group (all p<0.05). For people with intermediate or uncontrolled HbA1c, having individualized treatment plans was the only QOW feature that was significantly associated with a lower HbA1c level (p<0.05).This nationwide study adds important knowledge regarding associations between QOW in real life clinical practice and HbA1c levels. PHCCs' QOW may mainly only benefit people with controlled HbA1c and more effective QOW strategies are needed to support people with uncontrolled HbA1c.
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| 9. |
- Husdal, Rebecka, et al.
(författare)
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Resource allocation and organisational features in Swedish primary diabetes care : Changes from 2006 to 2013
- 2017
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Ingår i: Primary Care Diabetes. - : Elsevier. - 1751-9918 .- 1878-0210. ; 11:1, s. 20-28
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Tidskriftsartikel (refereegranskat)abstract
- Aims: To compare the resource allocation and organisational features in Swedish primary diabetes care for patients with type 2 diabetes mellitus (T2DM) between 2006 and 2013.Methods: Using a repeated cross-sectional study design, questionnaires covering personnel resources and organisational features for patients with T2DM in 2006 and 2013 were sent to all Swedish primary health care centres (PHCCs) during the following year. In total, 684 (74.3%) PHCCs responded in 2006 and 880 (76.4%) in 2013.Results: Compared with 2006, the median list size had decreased in 2013 (p<0.001), whereas the median number of listed patients with T2DM had increased (p<0.001). Time devoted to patients with T2DM and diabetes-specific education levels for registered nurses (RNs) had increased, and more PHCCs had in-house psychologists (all p<0.001). The use of follow-up systems and medical check-ups had increased (all p<0.05). Individual counselling was more often based on patients' needs, while arrangement of group-based education remained low. Patient participation in setting treatment targets mainly remained low.Conclusions: Even though the diabetes-specific educational level among RNs increased, the arrangement of group-based education and patient participation in setting treatment targets remained low. These results are of concern and should be prioritised as key features in the care of patients with T2DM. (C) 2016 Primary Care Diabetes Europe. Published by Elsevier Ltd. All rights reserved.
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| 10. |
- Husdal, Rebecka, et al.
(författare)
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Resources and organisation in primary health care are associated with HbA(1c) level : A nationwide study of 230 958 people with Type 2 diabetes mellitus
- 2018
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Ingår i: Primary Care Diabetes. - : Elsevier. - 1751-9918 .- 1878-0210. ; 12:1, s. 23-33
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Tidskriftsartikel (refereegranskat)abstract
- Aims: To examine the association between personnel resources and organisational features of primary health care centres (PHCCs) and individual HbAic level in people with Type 2 diabetes mellitus (T2DM).Methods: People with T2DM attending 846 PHCCs (n =230 958) were included in this crosssectional study based on PHCC-level data from a questionnaire sent to PHCCs in 2013 and individual-level clinical data from 2013 for people with T2DM reported in the Swedish National Diabetes Register, linked to individual-level data on socio-economic status and comorbidities. Data were analysed using a generalized estimating equations linear regression models.Results: After adjusting for PHCC- and individual-level confounding factors, personnel resources associated with lower individual HbAi, level were mean credits of diabetes specific education among registered nurses (RNs) (-0.02 mmol/mol for each additional credit; P < 0.001) and length of regular visits to RNs (-0.19 mmol/mol for each additional 15 min; P < 0.001). Organisational features associated with HbAie level were having a diabetes team (-0.18 mmol/mol; P <0.01) and providing group education (-0.20 mmol/mol; P < 0.01).Conclusions: In this large sample, PHCC personnel resources and organisational features were associated with lower HbA(1c), level in people with T2DM.
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