362 results on '"Wallenius P"'
Search Results
2. Updated uranium reference material 231Pa/235U consensus model ages for nuclear forensics
- Author
-
Edwards, Mark A., Varga, Zsolt, Gaffney, Amy M., Denton, Joanna S., Engel, John R., Gonzales, Matthew S., Kayzar-Boggs, Theresa M., Mayer, Klaus, Nicholl, Adrian, Sanborn, Matthew E., Steiner, Robert E., Tarng, Cheng, Treinen, Kerri C., Wallenius, Maria, and Wende, Allison M.
- Published
- 2024
- Full Text
- View/download PDF
3. Uranium age dating measurements by laser ablation multi-collector ICP-MS in uranium materials
- Author
-
Varga, Zsolt, Nicholl, Adrian, Wallenius, Maria, and Mayer, Klaus
- Published
- 2024
- Full Text
- View/download PDF
4. Towards a Global History of Education in the Himalaya: The Case of Jaya Prithvi Bahadur Singh
- Author
-
Todd John Wallenius
- Abstract
Scholars have long considered the era of modern education in Nepal as inaugurated by foreign actors in the 1950s. Based on an analysis of two central publications of the relatively overlooked educator and intellectual Jaya Prithvi Bahadur Singh, this paper aims to shed new light on the educational history of the early twentieth century Himalaya. By employing a lens of global history, the study challenges the narrative of a 'sudden arrival' of modern education in Nepal in 1950s. In doing so, the paper aims to demonstrate the relevance of Singh's thought to the global emergence of modern, progressive, and humanistic forms of education in the early twentieth century.
- Published
- 2024
- Full Text
- View/download PDF
5. Population genomic analyses reveal that salinity and geographic isolation drive diversification in a free-living protist
- Author
-
Rengefors, Karin, Annenkova, Nataliia, Wallenius, Joel, Svensson, Marie, Kremp, Anke, and Ahrén, Dag
- Published
- 2024
- Full Text
- View/download PDF
6. Assessing changes in global fire regimes
- Author
-
Sayedi, Sayedeh Sara, Abbott, Benjamin W., Vannière, Boris, Leys, Bérangère, Colombaroli, Daniele, Romera, Graciela Gil, Słowiński, Michał, Aleman, Julie C., Blarquez, Olivier, Feurdean, Angelica, Brown, Kendrick, Aakala, Tuomas, Alenius, Teija, Allen, Kathryn, Andric, Maja, Bergeron, Yves, Biagioni, Siria, Bradshaw, Richard, Bremond, Laurent, Brisset, Elodie, Brooks, Joseph, Brugger, Sandra O., Brussel, Thomas, Cadd, Haidee, Cagliero, Eleonora, Carcaillet, Christopher, Carter, Vachel, Catry, Filipe X., Champreux, Antoine, Chaste, Emeline, Chavardès, Raphaël Daniel, Chipman, Melissa, Conedera, Marco, Connor, Simon, Constantine, Mark, Courtney Mustaphi, Colin, Dabengwa, Abraham N., Daniels, William, De Boer, Erik, Dietze, Elisabeth, Estrany, Joan, Fernandes, Paulo, Finsinger, Walter, Flantua, Suzette G. A., Fox-Hughes, Paul, Gaboriau, Dorian M., M.Gayo, Eugenia, Girardin, Martin. P., Glenn, Jeffrey, Glückler, Ramesh, González-Arango, Catalina, Groves, Mariangelica, Hamilton, Douglas S., Hamilton, Rebecca Jenner, Hantson, Stijn, Hapsari, K. Anggi, Hardiman, Mark, Hawthorne, Donna, Hoffman, Kira, Inoue, Jun, Karp, Allison T., Krebs, Patrik, Kulkarni, Charuta, Kuosmanen, Niina, Lacourse, Terri, Ledru, Marie-Pierre, Lestienne, Marion, Long, Colin, López-Sáez, José Antonio, Loughlin, Nicholas, Niklasson, Mats, Madrigal, Javier, Maezumi, S. Yoshi, Marcisz, Katarzyna, Mariani, Michela, McWethy, David, Meyer, Grant, Molinari, Chiara, Montoya, Encarni, Mooney, Scott, Morales-Molino, Cesar, Morris, Jesse, Moss, Patrick, Oliveras, Imma, Pereira, José Miguel, Pezzatti, Gianni Boris, Pickarski, Nadine, Pini, Roberta, Rehn, Emma, Remy, Cécile C., Revelles, Jordi, Rius, Damien, Robin, Vincent, Ruan, Yanming, Rudaya, Natalia, Russell-Smith, Jeremy, Seppä, Heikki, Shumilovskikh, Lyudmila, T.Sommers, William, Tavşanoğlu, Çağatay, Umbanhowar, Charles, Urquiaga, Erickson, Urrego, Dunia, Vachula, Richard S., Wallenius, Tuomo, You, Chao, and Daniau, Anne-Laure
- Published
- 2024
- Full Text
- View/download PDF
7. Challenges of collaborative governance in lifelong guidance in Finland
- Author
-
Tommi Wallenius and Janne Varjo
- Subjects
Collaborative governance ,lifelong guidance ,multi-relational accountability ,Education - Abstract
The aim of the paper was to analyse the ways in which collaborative governance appears in the context of lifelong guidance in Finland. The research question was ‘What are (in terms of problem-solving, collaborative process and multi-relational accountability) the challenges for collaborative governance of lifelong guidance in Finland?’ The analysis drew from ten in-depth thematic interviews with experts working on issues related to the governance of lifelong guidance at the central government of Finland and related interest groups. Our analysis showed that, despite the progress made, institutional structures, practices and perceptions challenge the implementation of collaborative governance. The results point out three key challenges: The first generally relates to the aim of increasing collaborative governance, the second to the creation of a collaborative network and the formation of shared objectives in lifelong guidance and the third to the concept of multi-relational accountability. A key question in addressing these challenges is how to evaluate and verify the benefits of collaborative governance.
- Published
- 2024
- Full Text
- View/download PDF
8. Role of FFAR3 in ketone body regulated glucagon-like peptide 1 secretion
- Author
-
Sara MT. Persson, Anna Casselbrant, Aiham Alarai, Erik Elebring, Lars Fändriks, and Ville Wallenius
- Subjects
Free fatty acid receptors ,Glucagon-like peptide 1 ,Incretins ,Intestinal ketogenesis ,Ketone bodies ,Biology (General) ,QH301-705.5 ,Biochemistry ,QD415-436 - Abstract
Background: Roux-en-Y gastric bypass (RYGB) is an effective treatment for obesity, resulting in long-term weight loss and rapid remission of type 2 diabetes mellitus. Improved glucagon-like peptide 1 (GLP-1) levels is one factor that contributes to the positive effects. Prior to RYGB, GLP-1 response is blunted which can be attributed to intestinal ketogenesis. Intestinal produced ketone bodies inhibit GLP-1 secretion in enteroendocrine cells via an unidentified G-protein coupled receptors (GPCRs). A possible class of GPCRs through which ketone bodies may reach are the free fatty acid receptors (FFARs) located at the basolateral membrane of enteroendocrine cells. Aim: To evaluate FFAR3 expression in enteroendocrine cells of the small intestine under different circumstances, such as diet and bariatric surgery, as well as explore the link between ketone bodies and GLP-1 secretion. Materials and methods: FFAR3 and enteroendocrine cell expression was analyzed using Western blot and immunohistochemistry in biopsies from healthy volunteers, obese patients undergoing RYGB and mice. GLUTag cells were used to study GLP-1 secretion and FFAR3 signaling pathways. Results: The expression of FFAR3 is markedly influenced by diet, especially high fat diet, which increased FFAR3 protein expression. Lack of substrate such as free fatty acids in the alimentary limb after RYGB, downregulate FFAR3 expression. The number of enteroendocrine cells was affected by diet in the normal weight individuals but not in the subjects with obesity. In GLUTag cells, we show that the ketone bodies exert its blocking effect on GLP-1 secretion via the FFAR3, and the Gαi/o signaling pathway. Conclusion: Our findings that ketone bodies via FFAR3 inhibits GLP-1 secretion bring important insight into the pathophysiology of T2D. This highlights the role of FFAR3 as a possible target for future anti-diabetic drugs and treatments.
- Published
- 2024
- Full Text
- View/download PDF
9. Clinical and genetic analyses of a Swedish patient series diagnosed with ataxia
- Author
-
Gorcenco, Sorina, Kafantari, Efthymia, Wallenius, Joel, Karremo, Christin, Alinder, Erik, Dobloug, Sigurd, Landqvist Waldö, Maria, Englund, Elisabet, Ehrencrona, Hans, Wictorin, Klas, Karrman, Kristina, and Puschmann, Andreas
- Published
- 2024
- Full Text
- View/download PDF
10. Wearable Neuromuscular Electrical Stimulation on Quadriceps Muscle Can Increase Venous Flow
- Author
-
Flodin, Johanna, Wallenius, Philip, Guo, Li, Persson, Nils-Krister, and Ackermann, Paul
- Published
- 2023
- Full Text
- View/download PDF
11. FGF21 protects against hepatic lipotoxicity and macrophage activation to attenuate fibrogenesis in nonalcoholic steatohepatitis.
- Author
-
Liu, Cong, Schönke, Milena, Spoorenberg, Borah, Lambooij, Joost, van der Zande, Hendrik, Zhou, Enchen, Tushuizen, Maarten, Andreasson, Anne-Christine, Park, Andrew, Oldham, Stephanie, Uhrbom, Martin, Ahlstedt, Ingela, Ikeda, Yasuhiro, Wallenius, Kristina, Peng, Xiao-Rong, Guigas, Bruno, Boon, Mariëtte, Wang, Yanan, and Rensen, Patrick
- Subjects
fibroblast growth factor 21 ,immunology ,inflammation ,lipid/scar-associated macrophages ,liver-adipose tissue crosstalk ,medicine ,mouse ,steatohepatitis ,Mice ,Humans ,Animals ,Non-alcoholic Fatty Liver Disease ,Diabetes Mellitus ,Type 2 ,Macrophage Activation ,Cicatrix ,Liver ,Inflammation ,Diet ,High-Fat ,Cholesterol ,Lipids ,Mice ,Inbred C57BL ,Disease Models ,Animal - Abstract
Analogues of the hepatokine fibroblast growth factor 21 (FGF21) are in clinical development for type 2 diabetes and nonalcoholic steatohepatitis (NASH) treatment. Although their glucose-lowering and insulin-sensitizing effects have been largely unraveled, the mechanisms by which they alleviate liver injury have only been scarcely addressed. Here, we aimed to unveil the mechanisms underlying the protective effects of FGF21 on NASH using APOE*3-Leiden.CETP mice, a well-established model for human-like metabolic diseases. Liver-specific FGF21 overexpression was achieved in mice, followed by administration of a high-fat high-cholesterol diet for 23 weeks. FGF21 prevented hepatic lipotoxicity, accompanied by activation of thermogenic tissues and attenuation of adipose tissue inflammation, improvement of hyperglycemia and hypertriglyceridemia, and upregulation of hepatic programs involved in fatty acid oxidation and cholesterol removal. Furthermore, FGF21 inhibited hepatic inflammation, as evidenced by reduced Kupffer cell (KC) activation, diminished monocyte infiltration, and lowered accumulation of monocyte-derived macrophages. Moreover, FGF21 decreased lipid- and scar-associated macrophages, which correlated with less hepatic fibrosis as demonstrated by reduced collagen accumulation. Collectively, hepatic FGF21 overexpression limits hepatic lipotoxicity, inflammation, and fibrogenesis. Mechanistically, FGF21 blocks hepatic lipid influx and accumulation through combined endocrine and autocrine signaling, respectively, which prevents KC activation and lowers the presence of lipid- and scar-associated macrophages to inhibit fibrogenesis.
- Published
- 2023
12. Population genomic analyses reveal that salinity and geographic isolation drive diversification in a free-living protist
- Author
-
Karin Rengefors, Nataliia Annenkova, Joel Wallenius, Marie Svensson, Anke Kremp, and Dag Ahrén
- Subjects
Medicine ,Science - Abstract
Abstract Protists make up the vast diversity of eukaryotic life and play a critical role in biogeochemical cycling and in food webs. Because of their small size, cryptic life cycles, and large population sizes, our understanding of speciation in these organisms is very limited. We performed population genomic analyses on 153 strains isolated from eight populations of the recently radiated dinoflagellate genus Apocalathium, to explore the drivers and mechanisms of speciation processes. Species of this genus inhabit both freshwater and saline habitats, lakes and seas, and are found in cold temperate environments across the world. RAD sequencing analyses revealed that the populations were overall highly differentiated, but morphological similarity was not congruent with genetic similarity. While geographic isolation was to some extent coupled to genetic distance, this pattern was not consistent. Instead, we found evidence that the environment, specifically salinity, is a major factor in driving ecological speciation in Apocalathium. While saline populations were unique in loci coupled to genes involved in osmoregulation, freshwater populations appear to lack these. Our study highlights that adaptation to freshwater through loss of osmoregulatory genes may be an important speciation mechanism in free-living aquatic protists.
- Published
- 2024
- Full Text
- View/download PDF
13. ‘I became more aware of my actions’—A qualitative longitudinal study of a health psychological group intervention for patients with myalgic encephalomyelitis/chronic fatigue syndrome
- Author
-
Meeri Keurulainen, Juha Holma, Elina Wallenius, Mikko Pänkäläinen, Jukka Hintikka, and Markku Partinen
- Subjects
chronic fatigue ,cognitive behavioural therapy ,health psychology ,illness management ,ME/CFS ,qualitative longitudinal study ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Objectives To explore myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) patients' experiences of a health psychological group intervention and its usefulness, non‐usefulness or harmfulness for illness management and adjustment. Design A qualitative longitudinal study using inductive content analysis. Methods Semistructured interviews were conducted with 10 adults. Interviews were conducted before the 16‐week intervention, immediately after its completion, and at 3 months after completion. Results Participants reported that the intervention was useful and not harmful. The model improved their ability to cope with ME/CFS by providing them with useful information about the illness along with peer support and professional guidance. Participants reported improved illness management and adjustment, which they perceived as an outcome of achieving new ways of thinking, feeling and acting. Conclusions Participants viewed the health psychological approach to group intervention as meeting their needs. To achieve better illness management and adjustment, more consideration should be given to supportive interactional processes with peers and healthcare professionals. Patient or Public Contribution The intervention was developed to meet patients' needs of finding ways to manage their illness. The research team consulted eight patients with ME/CFS and three clinical centres working with ME/CFS treatment and rehabilitation at the intervention planning stage. Their comments influenced the planning and content of the intervention as well as ethical issues that should be considered, such as potential harm to participants. All participants were informed about the theoretical foundations of the study and the principles guiding the intervention. Participants were not involved in the data analysis. Clinical Trial Registration NCT04151693
- Published
- 2023
- Full Text
- View/download PDF
14. Lipoxins reduce obesity-induced adipose tissue inflammation in 3D-cultured human adipocytes and explant cultures
- Author
-
Soták, Matúš, Rajan, Meenu Rohini, Clark, Madison, Harms, Matthew, Rani, Alankrita, Kraft, Jamie D, Tandio, David, Shen, Tong, Borkowski, Kamil, Fiehn, Oliver, Newman, John W, Quiding-Järbrink, Marianne, Biörserud, Christina, Apelgren, Peter, Staalesen, Trude, Hagberg, Carolina E, Boucher, Jeremie, Wallenius, Ville, Lange, Stephan, and Börgeson, Emma
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Clinical Research ,Obesity ,Nutrition ,2.1 Biological and endogenous factors ,5.1 Pharmaceuticals ,Inflammatory and immune system ,Metabolic and endocrine ,Good Health and Well Being ,Biological sciences ,Cell biology ,Human metabolism ,Physiology ,Precision medicine - Abstract
Adipose tissue inflammation drives obesity-related cardiometabolic diseases. Enhancing endogenous resolution mechanisms through administration of lipoxin A4, a specialized pro-resolving lipid mediator, was shown to reduce adipose inflammation and subsequently protects against obesity-induced systemic disease in mice. Here, we demonstrate that lipoxins reduce inflammation in 3D-cultured human adipocytes and adipose tissue explants from obese patients. Approximately 50% of patients responded particularly well to lipoxins by reducing inflammatory cytokines and promoting an anti-inflammatory M2 macrophage phenotype. Responding patients were characterized by elevated systemic levels of C-reactive protein, which causes inflammation in cultured human adipocytes. Responders appeared more prone to producing anti-inflammatory oxylipins and displayed elevated prostaglandin D2 levels, which has been interlinked with transcription of lipoxin-generating enzymes. Using explant cultures, this study provides the first proof-of-concept evidence supporting the therapeutic potential of lipoxins in reducing human adipose tissue inflammation. Our data further indicate that lipoxin treatment may require a tailored personalized-medicine approach.
- Published
- 2022
15. Bureaucratising Social Justice: The Reproduction of Social Inequality through Scholarship Programs in Nepal
- Author
-
Pradhan, Uma, Wallenius, Todd John, and Valentin, Karen
- Abstract
This article draws on ethnographic data on the distribution of scholarship programs at two Nepali state-run schools. Anchored in the cross-field of educational anthropology and the anthropology of bureaucracy, this article examines schools not just as sites of learning but as institutions that control and regulate access through bureaucratized mechanisms. We draw attention to scholarship processes as inherently selective and requiring social and cultural capital, thus leading to what we term "the bureaucratization of social justice."
- Published
- 2023
- Full Text
- View/download PDF
16. Differential sensitivity of the 2020 revised comprehensive diagnostic criteria and the 2019 ACR/EULAR classification criteria across IgG4-related disease phenotypes: results from a Norwegian cohort
- Author
-
Vikse, Jens, Midtvedt, Øyvind, Fevang, Bjørg-Tilde Svanes, Garen, Torhild, Palm, Øyvind, Wallenius, Marianne, Bakland, Gunnstein, Norheim, Katrine Brække, Molberg, Øyvind, and Hoffmann-Vold, Anna-Maria
- Published
- 2023
- Full Text
- View/download PDF
17. Breastfeeding in women with systemic lupus erythematosus: results from a Norwegian quality register
- Author
-
Bjerkaas Hanssen, Maylinn, Malm Gulati, Agnete, Koksvik, Hege, and Wallenius, Marianne
- Published
- 2023
- Full Text
- View/download PDF
18. 2-[18F]FDG-PET/CT is a better predictor of survival than conventional CT: a prospective study of response monitoring in metastatic breast cancer
- Author
-
Vogsen, Marianne, Naghavi-Behzad, Mohammad, Harbo, Frederik Graae, Jakobsen, Nick Møldrup, Gerke, Oke, Asmussen, Jon Thor, Nissen, Henriette Juel, Dahlsgaard-Wallenius, Sara Elisabeth, Braad, Poul-Erik, Jensen, Jeanette Dupont, Ewertz, Marianne, and Hildebrandt, Malene Grubbe
- Published
- 2023
- Full Text
- View/download PDF
19. Differential sensitivity of the 2020 revised comprehensive diagnostic criteria and the 2019 ACR/EULAR classification criteria across IgG4-related disease phenotypes: results from a Norwegian cohort
- Author
-
Jens Vikse, Øyvind Midtvedt, Bjørg-Tilde Svanes Fevang, Torhild Garen, Øyvind Palm, Marianne Wallenius, Gunnstein Bakland, Katrine Brække Norheim, Øyvind Molberg, and Anna-Maria Hoffmann-Vold
- Subjects
IgG4-RD ,Criteria ,Phenotypes ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background We investigated sensitivity of the 2020 Revised Comprehensive Diagnostic Criteria (RCD) and the 2019 ACR/EULAR classification criteria across the four identified IgG4-related disease (IgG4-RD) phenotypes: “Pancreato-Hepato-Biliary”, “Retroperitoneum and Aorta”, “Head and Neck-limited” and “Mikulicz’ and Systemic” in a well-characterized patient cohort. Methods We included adult patients diagnosed with IgG4-RD after comprehensive clinical assessment at Oslo University Hospital in Norway. We assigned patients to IgG4-RD phenotypes based on pattern of organ involvement and assessed fulfillment of RCD and 2019 ACR/EULAR classification criteria. Differences between phenotype groups were analyzed using one-way ANOVA for continuous variables, and contingency tables for categorical variables. Results The study cohort included 79 IgG4-RD patients assigned to the “Pancreato-Hepato-Biliary” (22.8%), Retroperitoneum and Aorta” (22.8%) “Head and Neck-limited” (29.1%), and “Mikulicz’ and Systemic” (25.3%) phenotype groups, respectively. While 7 2/79 (91.1%) patients in total fulfilled the RCD, proportion differed across phenotype groups and was lowest in the “Retroperitoneum and Aorta” group ( 66.7%, p < 0.001). Among the 57 (72.2%) patients meeting the 2019 ACR/EULAR classification criteria, proportion was again lowest in the “Retroperitoneum and Aorta” group (27.8%, p
- Published
- 2023
- Full Text
- View/download PDF
20. Propagation and variation of material characteristics during the uranium ore concentrate production at Dolní Rožinka, Czech Republic
- Author
-
Varga, Zsolt, Nicholl, Adrian, Wallenius, Maria, Mayer, Klaus, and Mock, Todd
- Published
- 2023
- Full Text
- View/download PDF
21. International interlaboratory compilation of trace element concentrations in the CUP-2 uranium ore concentrate standard
- Author
-
Denton, Joanna S., Bostick, Debra A., Boulyga, Sergei F., Cunningham, J. Alan, Dimayuga, Ike, Hexel, Cole R., Hiess, Joe, Jovanovic, Slobodan V., Kaye, Philip, Kell, Tara, Kelly, Fiona, Kinman, William, Kiser, Stephen, Lindvall, Rachel E., Macsik, Zsuzsanna, Manard, Benjamin T., Mayer, Klaus, Mercier, Jean-Francois, Samuleev, Pavel, Saull, Patrick R. B., Shi, Youqing, Steiner, Robert. E., Ticknor, Brian W., Totland, Marina, Varga, Zsolt, Wallenius, Maria, and Wylie, E. Miller
- Published
- 2023
- Full Text
- View/download PDF
22. Determination of inorganic anions in uranium ore concentrate reference materials
- Author
-
Pagliano, Enea, Keegan, Elizabeth, Varga, Zsolt, Nadeau, Kenny, Meija, Juris, Wong, Henri, Vardanega, Christopher, Wallenius, Maria, Mayer, Klaus, Cochrane, Chris, El-Jaby, Ali, and Mester, Zoltán
- Published
- 2023
- Full Text
- View/download PDF
23. Pharmacological treatment with FGF21 strongly improves plasma cholesterol metabolism to reduce atherosclerosis.
- Author
-
Liu, Cong, Schönke, Milena, Zhou, Enchen, Li, Zhuang, Kooijman, Sander, Boon, Mariëtte, Larsson, Mikael, Wallenius, Kristina, Dekker, Niek, Barlind, Louise, Peng, Xiao-Rong, Wang, Yanan, and Rensen, Patrick
- Subjects
Adipose-liver axis ,Atherosclerotic cardiovascular disease ,Brown adipose tissue ,Dyslipidaemia ,Lipoprotein metabolism ,Adipose Tissue ,Brown ,Adipose Tissue ,White ,Adiposity ,Animals ,Anticholesteremic Agents ,Apolipoprotein E3 ,Atherosclerosis ,Biomarkers ,Cholesterol ,Disease Models ,Animal ,Energy Metabolism ,Fibroblast Growth Factors ,Hypercholesterolemia ,Lipid Metabolism ,Lipoproteins ,VLDL ,Liver ,Mice ,Transgenic ,Plaque ,Atherosclerotic ,Recombinant Proteins ,Triglycerides - Abstract
AIMS: Fibroblast growth factor (FGF) 21, a key regulator of energy metabolism, is currently evaluated in humans for treatment of type 2 diabetes and non-alcoholic steatohepatitis. However, the effects of FGF21 on cardiovascular benefit, particularly on lipoprotein metabolism in relation to atherogenesis, remain elusive. METHODS AND RESULTS: Here, the role of FGF21 in lipoprotein metabolism in relation to atherosclerosis development was investigated by pharmacological administration of a half-life extended recombinant FGF21 protein to hypercholesterolaemic APOE*3-Leiden.CETP mice, a well-established model mimicking atherosclerosis initiation and development in humans. FGF21 reduced plasma total cholesterol, explained by a reduction in non-HDL-cholesterol. Mechanistically, FGF21 promoted brown adipose tissue (BAT) activation and white adipose tissue (WAT) browning, thereby enhancing the selective uptake of fatty acids from triglyceride-rich lipoproteins into BAT and into browned WAT, consequently accelerating the clearance of the cholesterol-enriched remnants by the liver. In addition, FGF21 reduced body fat, ameliorated glucose tolerance and markedly reduced hepatic steatosis, related to up-regulated hepatic expression of genes involved in fatty acid oxidation and increased hepatic VLDL-triglyceride secretion. Ultimately, FGF21 largely decreased atherosclerotic lesion area, which was mainly explained by the reduction in non-HDL-cholesterol as shown by linear regression analysis, decreased lesion severity, and increased atherosclerotic plaque stability index. CONCLUSION: FGF21 improves hypercholesterolaemia by accelerating triglyceride-rich lipoprotein turnover as a result of activating BAT and browning of WAT, thereby reducing atherosclerotic lesion severity and increasing atherosclerotic lesion stability index. We have thus provided additional support for the clinical use of FGF21 in the treatment of atherosclerotic cardiovascular disease.
- Published
- 2022
24. Breastfeeding in women with systemic lupus erythematosus: results from a Norwegian quality register
- Author
-
Maylinn Bjerkaas Hanssen, Agnete Malm Gulati, Hege Koksvik, and Marianne Wallenius
- Subjects
Pediatrics ,RJ1-570 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Knowledge on breastfeeding among women with systemic lupus erythematosus (SLE) is sparse. We wanted to identify the frequency of breastfeeding in SLE, and to compare breastfeeding women with SLE to non-breastfeeding women to examine possible differences in disease characteristics and self-reported health data between the groups. Methods Prospective data on women with SLE from RevNatus, a consent-based Norwegian nationwide quality register was used for this study. Data were collected during January 2016 to September 2021. We used data registered at inclusion when planning pregnancy or in 1st trimester, and 6 weeks, 6 and 12 months after delivery. Breastfeeding and non-breastfeeding patients were compared according to demographic, serological and obstetric data as well as disease activity, medication, self-reported pain, and fatigue. Results A total of 114 pregnancies in 101 SLE women were included in the analysis. A majority of the women (78%) breastfed six weeks postpartum. Six and 12 months after delivery, breastfeeding rates were 54% and 30% respectively. Six weeks postpartum, non-breastfeeding women showed higher prevalence of emergency caesarean delivery (p = 0.038), preeclampsia (p = 0.056) and lower educational level (p = 0.046) compared to breastfeeding women. 12 months after delivery, we observed a higher frequency of multiparity among breastfeeding women (p = 0.017) compared to non-breastfeeding. Overall, we found low disease activity in both groups at all registrations in the follow-up, and disease activity did not differ between the groups. More than 70% of both breastfeeding and non-breastfeeding women used hydroxychloroquine (HCQ). Conclusions Breastfeeding rate in women with SLE was high six weeks postpartum. Multiparous women breastfed longer than primiparas. Disease activity, use of HCQ, and self-reported health data were comparable between the groups. Our data indicate that health professionals should encourage women with SLE to breastfeed.
- Published
- 2023
- Full Text
- View/download PDF
25. 2-[18F]FDG-PET/CT is a better predictor of survival than conventional CT: a prospective study of response monitoring in metastatic breast cancer
- Author
-
Marianne Vogsen, Mohammad Naghavi-Behzad, Frederik Graae Harbo, Nick Møldrup Jakobsen, Oke Gerke, Jon Thor Asmussen, Henriette Juel Nissen, Sara Elisabeth Dahlsgaard-Wallenius, Poul-Erik Braad, Jeanette Dupont Jensen, Marianne Ewertz, and Malene Grubbe Hildebrandt
- Subjects
Medicine ,Science - Abstract
Abstract This study aimed to compare CE-CT and 2-[18F]FDG-PET/CT for response monitoring metastatic breast cancer (MBC). The primary objective was to predict progression-free and disease-specific survival for responders vs. non-responders on CE-CT and 2-[18F]FDG-PET/CT. The secondary objective was to assess agreement between response categorization for the two modalities. Treatment response in women with MBC was monitored prospectively by simultaneous CE-CT and 2-[18F]FDG-PET/CT, allowing participants to serve as their own controls. The standardized response evaluation criteria in solid tumors (RECIST 1.1) and PET response criteria in solid tumors (PERCIST) were used for response categorization. For prediction of progression-free and disease-specific survival, treatment response was dichotomized into responders (partial and complete response) and non-responders (stable and progressive disease) at the first follow-up scan. Progression-free survival was defined as the time from baseline until disease progression or death from any cause. Disease-specific survival was defined as the time from baseline until breast cancer-specific death. Agreement between response categorization for both modalities was analyzed for all response categories and responders vs. non-responders. At the first follow-up, tumor response was reported more often by 2-[18F]FDG-PET/CT than CE-CT, with only fair agreement on response categorization between the two modalities (weighted Kappa 0.28). Two-year progression-free survival for responders vs. non-responders by CE-CT was 54.2% vs. 46.0%, compared with 59.1% vs. 14.3% by 2-[18F]FDG-PET/CT. Correspondingly, 2-year disease-specific survival were 83.3% vs. 77.8% for CE-CT and 84.6% vs. 61.9% for 2-[18F]FDG-PET/CT. Tumor response on 2-[18F]FDG-PET/CT was significantly associated with progression-free (HR: 3.49, P
- Published
- 2023
- Full Text
- View/download PDF
26. The value of 'diaphragmatic relaxing incision' for the durability of the crural repair in patients with paraesophageal hernia: a double blind randomized clinical trial
- Author
-
A. Tsoposidis, A. Thorell, H. Axelsson, M. Reuterwall Hansson, L. Lundell, V. Wallenius, S. Kostic, and B. Håkanson
- Subjects
paraesophageal hernia ,crural repair ,hernia recurrence ,diaphragmatic relaxing incision ,GERD ,obstructive symptoms ,Surgery ,RD1-811 - Abstract
BackgroundSurgical repair of paraesophageal hernias (PEHs) is burdened with high recurrence rates, and hitherto various techniques explored to enforce the traditional crural repair have not been successful. The hiatal reconstruction in PEH is exposed to significant tension, which may be minimized by adding a diaphragmatic relaxing incision to enhance the durability of the crural repair.Patients and methodsAll individuals undergoing elective laparoscopic repair of a large PEH, irrespective of age, were considered eligible. PEHs were classified into types II–IV. The preoperative work-up program included multidetector computed tomography and symptom assessment questionnaires, which will be repeated during the postoperative follow-up. Patients were randomly divided into a control group with crural repair alone and an intervention group with the addition of a left-sided diaphragmatic relaxing incision at the edge of the upper pole of the spleen. The diaphragmatic defect was then covered by a synthetic mesh.ResultsThe primary endpoint of this trial was the rate of anatomical PEH recurrence at 1 year. Secondary endpoints included symptomatic gastroesophageal reflux disease, dysphagia, odynophagia, gas bloat, regurgitation, chest pain, abdominal pain, nausea, vomiting, postprandial pain, cardiovascular and pulmonary symptoms, and patient satisfaction in the immediate postoperative course (3 months) and at 1 year. Postoperative complications, morbidity, and disease burden were recorded for each patient. This was a double-blind study, meaning that the operation report was filed in a locked archive to keep the patient, staff, and clinical assessors blinded to the study group allocation. Blinding must not be broken during the follow-up unless required by any emergencies in the clinical management of the patient. Likewise, the patients must not be informed about the details of the operation.Trial RegistrationClinicalTrials.gov, identification number NCT04179578.
- Published
- 2023
- Full Text
- View/download PDF
27. Quasi-One-Dimensional Few-Body Systems with Correlated Gaussians
- Author
-
Wallenius, M., Fedorov, D. V., Jensen, A. S., and Zinner, N. T.
- Subjects
Condensed Matter - Quantum Gases - Abstract
The theoretical study of ultracold few-body systems is often done using an idealized 1D model with zero range interactions. Here we study these systems using a more realistic 3D model with finite range interactions. We place three-particles, two identical and one impurity, in an axial symmetric harmonic trap and solve the corresponding stationary Schr\"odinger equation using the correlated Gaussian method for different particle types, aspect ratios and interactions strength. We show that the idealized model is accurate for small and intermediate strength interactions at aspect ratios larger than four, independently of the particle types. In the strongly interacting limit, the idealized model is acceptable for bosonic systems, but not for fermionic systems even at large aspect ratios., Comment: 14 pages, 14 figures, comments are welcome
- Published
- 2019
28. An operational test for existence of a consistent increasing quasi-concave value function
- Author
-
Soleimani-damaneh, Majid, Pourkarimi, Latif, Korhonen, Pekka J., and Wallenius, Jyrki
- Subjects
Mathematics - Optimization and Control - Abstract
Existence of an increasing quasi-concave value function consistent with given preference information is an important issue in various fields including Economics, Multiple Criteria Decision Making, and Applied Mathematics. In this paper, we establish necessary and sufficient conditions for existence of a value function satisfying aforementioned properties. This leads to an operational, tractable and easy to use test for checking the existence of a desirable value function. In addition to developing the existence test, we construct consistent linear and non-linear desirable value functions.
- Published
- 2019
29. Laser ablation inductively coupled plasma mass spectrometry analysis of isotopically heterogeneous uranium materials
- Author
-
Varga, Zsolt, Wallenius, Maria, Nicholl, Adrian, and Mayer, Klaus
- Published
- 2022
- Full Text
- View/download PDF
30. Extramedullary Hematopoiesis Visualized on FDG-PET/CT in a Patient with Beta-Thalassemia
- Author
-
Dahlsgaard-Wallenius, Sara E., Juul-Jensen, Karen, Nielsen, Anne Lerberg, and Hildebrandt, Malene Grubbe
- Published
- 2022
- Full Text
- View/download PDF
31. Thermophysical properties and oxidation behaviour of the U0.8Zr0.2N solid solution
- Author
-
Yulia Mishchenko, Sobhan Patnaik, Janne Wallenius, and Denise Adorno Lopes
- Subjects
Nuclear engineering. Atomic power ,TK9001-9401 - Abstract
Thermophysical properties and oxidation behaviour of the composite pellet UN–20 vol%ZrN were investigated experimentally and compared with the behaviour of the pure UN pellet. A compound of a single phase, a solid solution of the average composition U0.8Zr0.2N, was obtained by Spark Plasma Sintering (SPS) of the powders UN and ZrN. Crystallographic and microstructural characterisation of the composite was performed using Scanning Electron Microscopy (SEM), standardised Energy Dispersive Spectroscopy (EDS) and Electron Backscatter Diffraction (EBSD). Nano hardness and Young’s modulus were also measured by the nanoindentation method. High-Temperature X-ray diffraction (XRD) was applied to obtain the lattice expansion as a function of temperature (room temperature to 673 K). Thermogravimetric Analysis (TGA) was applied to evaluate oxidation behaviour in air. Results demonstrate that the fabrication method results in a matrix of solid solution with homogeneous composition averaged to U0.8Zr0.2N. The mechanical properties of such solution are uniform, with variation only due to the crystallographic orientation of the grains of the solution phase, similar to pure UN. The obtained value for the average linear thermal expansion coefficient is α¯ = 7.94 × 10-6/K, which compares well to UN (α¯ = 7.95 × 10-6/K) for the same temperature range. The degradation behaviour of the composite pellet UN-20 vol%ZrN in air shows a lower oxidation onset temperature, compared to pure UN, with the final product of oxidation being mainly U3O8. Smaller crystallites in the product of corrosion of the composite pellet indicate that the mechanism of degradation of the solid solution phase U0.8Zr0.2N is accompanied by the formation of two distinct oxides and their interaction.
- Published
- 2023
- Full Text
- View/download PDF
32. The Evolving Security Landscape: Citizens’ Perceptions of Feminism as an Emerging Security Threat
- Author
-
Olsson Gardell, Eva-Karin, Wagnsson, Charlotte, and Wallenius, Claes
- Published
- 2022
- Full Text
- View/download PDF
33. Bayesian Metabolic Flux Analysis reveals intracellular flux couplings
- Author
-
Heinonen, Markus, Osmala, Maria, Mannerström, Henrik, Wallenius, Janne, Kaski, Samuel, Rousu, Juho, and Lähdesmäki, Harri
- Subjects
Statistics - Machine Learning ,Computer Science - Learning - Abstract
Metabolic flux balance analyses are a standard tool in analysing metabolic reaction rates compatible with measurements, steady-state and the metabolic reaction network stoichiometry. Flux analysis methods commonly place unrealistic assumptions on fluxes due to the convenience of formulating the problem as a linear programming model, and most methods ignore the notable uncertainty in flux estimates. We introduce a novel paradigm of Bayesian metabolic flux analysis that models the reactions of the whole genome-scale cellular system in probabilistic terms, and can infer the full flux vector distribution of genome-scale metabolic systems based on exchange and intracellular (e.g. 13C) flux measurements, steady-state assumptions, and target function assumptions. The Bayesian model couples all fluxes jointly together in a simple truncated multivariate posterior distribution, which reveals informative flux couplings. Our model is a plug-in replacement to conventional metabolic balance methods, such as flux balance analysis (FBA). Our experiments indicate that we can characterise the genome-scale flux covariances, reveal flux couplings, and determine more intracellular unobserved fluxes in C. acetobutylicum from 13C data than flux variability analysis. The COBRA compatible software is available at github.com/markusheinonen/bamfa, Comment: 8 pages
- Published
- 2018
34. Comparative analysis of obesity-related cardiometabolic and renal biomarkers in human plasma and serum.
- Author
-
Rajan, Meenu Rohini, Sotak, Matus, Barrenäs, Fredrik, Shen, Tong, Borkowski, Kamil, Ashton, Nicholas J, Biörserud, Christina, Lindahl, Tomas L, Ramström, Sofia, Schöll, Michael, Lindahl, Per, Fiehn, Oliver, Newman, John W, Perkins, Rosie, Wallenius, Ville, Lange, Stephan, and Börgeson, Emma
- Subjects
Humans ,Kidney Diseases ,Obesity ,Plasminogen Activator Inhibitor 1 ,Adult ,Middle Aged ,Female ,Male ,Biomarkers ,Proprotein Convertase 9 ,Metabolic Syndrome - Abstract
The search for biomarkers associated with obesity-related diseases is ongoing, but it is not clear whether plasma and serum can be used interchangeably in this process. Here we used high-throughput screening to analyze 358 proteins and 76 lipids, selected because of their relevance to obesity-associated diseases, in plasma and serum from age- and sex-matched lean and obese humans. Most of the proteins/lipids had similar concentrations in plasma and serum, but a subset showed significant differences. Notably, a key marker of cardiovascular disease PAI-1 showed a difference in concentration between the obese and lean groups only in plasma. Furthermore, some biomarkers showed poor correlations between plasma and serum, including PCSK9, an important regulator of cholesterol homeostasis. Collectively, our results show that the choice of biofluid may impact study outcome when screening for obesity-related biomarkers and we identify several markers where this will be the case.
- Published
- 2019
35. Subcutaneous delivery of FGF21 mRNA therapy reverses obesity, insulin resistance, and hepatic steatosis in diet-induced obese mice
- Author
-
Stefano Bartesaghi, Kristina Wallenius, Daniel Hovdal, Mathias Liljeblad, Simonetta Wallin, Niek Dekker, Louise Barlind, Nigel Davies, Frank Seeliger, Maria Sörhede Winzell, Sima Patel, Matt Theisen, Luis Brito, Nils Bergenhem, Shalini Andersson, and Xiao-Rong Peng
- Subjects
mRNA therapy ,LNP ,FGF21 ,insulin resistance ,steatosis ,DIO mice ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Fibroblast growth factor 21 (FGF21) is a promising therapeutic agent for treatment of type 2 diabetes (T2D) and non-alcoholic steatohepatitis (NASH). We show that therapeutic levels of FGF21 were achieved following subcutaneous (s.c.) administration of mRNA encoding human FGF21 proteins. The efficacy of mRNA was assessed following 2-weeks repeated s.c. dosing in diet-induced obese (DIO), mice which resulted in marked decreases in body weight, plasma insulin levels, and hepatic steatosis. Pharmacokinetic/pharmacodynamic (PK/PD) modelling of several studies in both lean and DIO mice showed that mRNA encoding human proteins provided improved therapeutic coverage over recombinant dosed proteins in vivo. This study is the first example of s.c. mRNA therapy showing pre-clinical efficacy in a disease-relevant model, thus, showing the potential for this modality in the treatment of chronic diseases, including T2D and NASH.
- Published
- 2022
- Full Text
- View/download PDF
36. Bioprocess optimization for lactic and succinic acid production from a pulp and paper industry side stream
- Author
-
Agata Olszewska-Widdrat, Charilaos Xiros, Anders Wallenius, Roland Schneider, Laís Portugal Rios da Costa Pereira, and Joachim Venus
- Subjects
fermentation ,lactic acid ,succinic acid ,fibre sludge ,hydrolysate ,bioeconomy ,Biotechnology ,TP248.13-248.65 - Abstract
The effective and cheap production of platform chemicals is a crucial step towards the transition to a bio-based economy. In this work, biotechnological methods using sustainable, cheap, and readily available raw materials bring bio-economy and industrial microbiology together: Microbial production of two platform chemicals is demonstrated [lactic (LA) and succinic acid (SA)] from a non-expensive side stream of pulp and paper industry (fibre sludge) proposing a sustainable way to valorize it towards economically important monomers for bioplastics formation. This work showed a promising new route for their microbial production which can pave the way for new market expectations within the circular economy principles. Fibre sludge was enzymatically hydrolysed for 72 h to generate a glucose rich hydrolysate (100 g·L−1 glucose content) to serve as fermentation medium for Bacillus coagulans A 541, A162 strains and Actinobacillus succinogenis B1, as well as Basfia succiniciproducens B2. All microorganisms were investigated in batch fermentations, showing the ability to produce either lactic or succinic acid, respectively. The highest yield and productivities for lactic production were 0.99 g·g−1 and 3.75 g·L−1·h−1 whereas the succinic acid production stabilized at 0.77 g·g−1 and 1.16 g·L−1·h−1.
- Published
- 2023
- Full Text
- View/download PDF
37. Caesarean section in women with axial spondyloarthritis and psoriatic arthritis: a population-based study
- Author
-
Stian Lydersen, Marianne Wallenius, Bente Jakobsen, Carina Götestam Skorpen, Kjell Åsmund Salvesen, and Hege Suorza Svean Koksvik
- Subjects
Medicine - Abstract
Background There is sparse documentation on pregnancy outcomes in women with axial spondyloarthritis (axSpA) and psoriatic arthritis (PsA). Data on disease activity are often lacking, preventing the direct investigation of the effect of inflammation on pregnancy outcomes. A caesarean section (CS) implies a higher risk for complications than vaginal delivery. It delays mobilisation after birth necessary to counteract inflammatory pain and stiffness.Objective To explore a possible association of inflammatory active disease and CS rates in women with axSpA and PsA.Methods Data from the Medical Birth Registry of Norway (MBRN) were linked with data from RevNatus, a Norwegian nationwide observational register recruiting women with inflammatory rheumatic diseases. Singleton births in women with axSpA (n=312) and PsA (n=121) included in RevNatus 2010–2019 were cases. Singleton births, excluding mothers with rheumatic inflammatory diseases, registered in MBRN during the same period time (n=575 798) served as population controls.Results CS occurred more frequently in both axSpA (22.4%) and PsA (30.6%) groups compared with population controls (15.6%), with even higher frequencies in inflammatory active axSpA (23.7%) and PsA (33.3%) groups. Compared with population controls, women with axSpA had higher risk for elective CS (risk difference 4.4%, 95% CI 1.5% to 8.2%) but not emergency CS. Women with PsA had higher risk for emergency CS (risk difference 10.6%, 95% CI 4.4% to 18.7%) but not elective CS.Conclusion Women with axSpA had higher risk for elective and women with PsA for emergency CS. Active disease amplified this risk.
- Published
- 2023
- Full Text
- View/download PDF
38. The Pattern of Metastatic Breast Cancer: A Prospective Head-to-Head Comparison of [18F]FDG-PET/CT and CE-CT
- Author
-
Rosa Gram-Nielsen, Ivar Yannick Christensen, Mohammad Naghavi-Behzad, Sara Elisabeth Dahlsgaard-Wallenius, Nick Møldrup Jakobsen, Oke Gerke, Jeanette Dupont Jensen, Marianne Ewertz, Malene Grubbe Hildebrandt, and Marianne Vogsen
- Subjects
[18F]FDG-PET/CT ,CE-CT ,metastatic breast cancer ,the proportion of agreement ,metastatic distribution ,Photography ,TR1-1050 ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
The study aimed to compare the metastatic pattern of breast cancer and the intermodality proportion of agreement between [18F]FDG-PET/CT and CE-CT. Women with metastatic breast cancer (MBC) were enrolled prospectively and underwent a combined [18F]FDG-PET/CT and CE-CT scan to diagnose MBC. Experienced nuclear medicine and radiology physicians evaluated the scans blinded to the opposite scan results. Descriptive statistics were applied, and the intermodality proportion of agreement was used to compare [18F]FDG-PET/CT and CE-CT. In total, 76 women with verified MBC were enrolled in the study. The reported number of site-specific metastases for [18F]FDG-PET/CT vs. CE-CT was 53 (69.7%) vs. 44 (57.9%) for bone lesions, 31 (40.8%) vs. 43 (56.6%) for lung lesions, and 16 (21.1%) vs. 23 (30.3%) for liver lesions, respectively. The proportion of agreement between imaging modalities was 76.3% (95% CI 65.2–85.3) for bone lesions; 82.9% (95% CI 72.5–90.6) for liver lesions; 57.9% (95% CI 46.0–69.1) for lung lesions; and 59.2% (95% CI 47.3–70.4) for lymph nodes. In conclusion, bone and distant lymph node metastases were reported more often by [18F]FDG-PET/CT than CE-CT, while liver and lung metastases were reported more often by CE-CT than [18F]FDG-PET/CT. Agreement between scans was highest for bone and liver lesions and lowest for lymph node metastases.
- Published
- 2023
- Full Text
- View/download PDF
39. Moving Landscapes of Nordic Basic Education: Approaching Shifting International Influences through the Narratives of Educational Experts
- Author
-
Hansen, Petteri, Wallenius, Tommi, Juvonen, Sara, and Varjo, Janne
- Abstract
Throughout history educational leaders have looked to other countries and have attempted to learn by borrowing useful examples to implement in their own educational systems. As recent comparative policy research shows, processes of policy lending and borrowing have their own socio-historically defined dynamics. In this paper, the authors approach the use of reference countries through narratives of educational experts in Finland, Norway and Sweden. By comparing how international influences are used in stories about basic education, this research constructs a core narrative of a moving Nordic landscape. This landscape indicates both recognised and acknowledged policy borrowing relations in the past, as well as a changing orientation to preferred and avoided reference countries in the present. While new country-specific performance indicators such as PISA have widened the landscape of reference countries at an official level, culturally mediated images seem to redefine how reference countries are observed in everyday semantics.
- Published
- 2020
- Full Text
- View/download PDF
40. FGF21 protects against hepatic lipotoxicity and macrophage activation to attenuate fibrogenesis in nonalcoholic steatohepatitis
- Author
-
Cong Liu, Milena Schönke, Borah Spoorenberg, Joost M Lambooij, Hendrik JP van der Zande, Enchen Zhou, Maarten E Tushuizen, Anne-Christine Andreasson, Andrew Park, Stephanie Oldham, Martin Uhrbom, Ingela Ahlstedt, Yasuhiro Ikeda, Kristina Wallenius, Xiao-Rong Peng, Bruno Guigas, Mariëtte R Boon, Yanan Wang, and Patrick CN Rensen
- Subjects
fibroblast growth factor 21 ,steatohepatitis ,lipid/scar-associated macrophages ,liver-adipose tissue crosstalk ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
Analogues of the hepatokine fibroblast growth factor 21 (FGF21) are in clinical development for type 2 diabetes and nonalcoholic steatohepatitis (NASH) treatment. Although their glucose-lowering and insulin-sensitizing effects have been largely unraveled, the mechanisms by which they alleviate liver injury have only been scarcely addressed. Here, we aimed to unveil the mechanisms underlying the protective effects of FGF21 on NASH using APOE*3-Leiden.CETP mice, a well-established model for human-like metabolic diseases. Liver-specific FGF21 overexpression was achieved in mice, followed by administration of a high-fat high-cholesterol diet for 23 weeks. FGF21 prevented hepatic lipotoxicity, accompanied by activation of thermogenic tissues and attenuation of adipose tissue inflammation, improvement of hyperglycemia and hypertriglyceridemia, and upregulation of hepatic programs involved in fatty acid oxidation and cholesterol removal. Furthermore, FGF21 inhibited hepatic inflammation, as evidenced by reduced Kupffer cell (KC) activation, diminished monocyte infiltration, and lowered accumulation of monocyte-derived macrophages. Moreover, FGF21 decreased lipid- and scar-associated macrophages, which correlated with less hepatic fibrosis as demonstrated by reduced collagen accumulation. Collectively, hepatic FGF21 overexpression limits hepatic lipotoxicity, inflammation, and fibrogenesis. Mechanistically, FGF21 blocks hepatic lipid influx and accumulation through combined endocrine and autocrine signaling, respectively, which prevents KC activation and lowers the presence of lipid- and scar-associated macrophages to inhibit fibrogenesis.
- Published
- 2023
- Full Text
- View/download PDF
41. Pathways of methane removal in the sediment and water column of a seasonally anoxic eutrophic marine basin
- Author
-
Olga M. Żygadłowska, Jessica Venetz, Robin Klomp, Wytze K. Lenstra, Niels A. G. M. van Helmond, Thomas Röckmann, Anna J. Wallenius, Paula Dalcin Martins, Annelies J. Veraart, Mike S. M. Jetten, and Caroline P. Slomp
- Subjects
methane oxidation ,coastal ,nitrogen ,iron ,manganese ,oxygen ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Methane (CH4) is a key greenhouse gas. Coastal areas account for a major proportion of marine CH4 emissions. Eutrophication and associated bottom water hypoxia enhance CH4 production in coastal sediments. Here, we assess the fate of CH4 produced in sediments at a site in a seasonally anoxic eutrophic coastal marine basin (Scharendijke, Lake Grevelingen, the Netherlands) in spring (March) and late summer (September) in 2020. Removal of CH4 in the sediment through anaerobic oxidation with sulfate (SO42-) is known to be incomplete in this system, as confirmed here by only slightly higher values of δ13C-CH4 and δD-CH4 in the porewater in the shallow sulfate-methane-transition zone (~5-15 cm sediment depth) when compared to deeper sediment layers. In March 2020, when the water column was fully oxygenated, CH4 that escaped from the sediment was at least partially removed in the bottom water through aerobic oxidation. In September 2020, when the water column was anoxic below ~35 m water depth, CH4 accumulated to high concentrations (up to 73 µmol L-1) in the waters below the oxycline. The sharp counter gradient in oxygen and CH4 concentrations at ~35 m depth and increase in δ13C-CH4 and δD-CH4 above the oxycline indicate mostly aerobic water column removal of CH4. Water column profiles of particulate and dissolved Fe and Mn suggest redox cycling of both metals at the oxycline, pointing towards a potential role of metal oxides in CH4 removal. Water column profiles of NH4+ and NO3- indicate removal of both solutes near the oxycline. Analyses of 16S rRNA gene sequences retrieved from the water column reveal the presence of aerobic CH4 oxidizing bacteria (Methylomonadaceae) and anaerobic methanotrophic archaea (Methanoperedenaceae), with the latter potentially capable of NO3- and/or metal-oxide dependent CH4 oxidation, near the oxycline. Overall, our results indicate sediment and water column removal of CH4 through a combination of aerobic and anaerobic pathways, which vary seasonally. Some of the CH4 appears to escape from the surface waters to the atmosphere, however. We conclude that eutrophication may make coastal waters a more important source of CH4 to the atmosphere than commonly assumed.
- Published
- 2023
- Full Text
- View/download PDF
42. Obesity-induced changes in lipid mediators persist after weight loss
- Author
-
Hernandez-Carretero, A, Weber, N, La Frano, MR, Ying, W, Lantero Rodriguez, J, Sears, DD, Wallenius, V, Börgeson, E, Newman, JW, and Osborn, O
- Subjects
Medical Physiology ,Biomedical and Clinical Sciences ,Nutrition and Dietetics ,Obesity ,Nutrition ,2.1 Biological and endogenous factors ,Aetiology ,Metabolic and endocrine ,Cancer ,Oral and gastrointestinal ,Stroke ,Cardiovascular ,Adipocytes ,Animals ,Body Weight ,Cells ,Cultured ,Diet ,Fat-Restricted ,Diet ,High-Fat ,Eating ,Humans ,Lipid Metabolism ,Male ,Metabolome ,Mice ,Mice ,Inbred C57BL ,Organ Specificity ,Weight Loss ,Medical and Health Sciences ,Education ,Endocrinology & Metabolism ,Biomedical and clinical sciences ,Health sciences - Abstract
BackgroundObesity induces significant changes in lipid mediators, however, the extent to which these changes persist after weight loss has not been investigated.Subjects/methodsWe fed C57BL6 mice a high-fat diet to generate obesity and then switched the diet to a lower-fat diet to induce weight loss. We performed a comprehensive metabolic profiling of lipid mediators including oxylipins, endocannabinoids, sphingosines and ceramides in key metabolic tissues (including adipose, liver, muscle and hypothalamus) and plasma.ResultsWe found that changes induced by obesity were largely reversible in most metabolic tissues but the adipose tissue retained a persistent obese metabolic signature. Prostaglandin signaling was perturbed in the obese state and lasting increases in PGD2, and downstream metabolites 15-deoxy PGJ2 and delta-12-PGJ2 were observed after weight loss. Furthermore expression of the enzyme responsible for PGD2 synthesis (hematopoietic prostaglandin D synthase, HPGDS) was increased in obese adipose tissues and remained high after weight loss. We found that inhibition of HPGDS over the course of 5 days resulted in decreased food intake in mice. Increased HPGDS expression was also observed in human adipose tissues obtained from obese compared with lean individuals. We then measured circulating levels of PGD2 in obese patients before and after weight loss and found that while elevated relative to lean subjects, levels of this metabolite did not decrease after significant weight loss.ConclusionsThese results suggest that lasting changes in lipid mediators induced by obesity, still present after weight loss, may play a role in the biological drive to regain weight.
- Published
- 2018
43. Parental trust in the Finnish basic education system during the COVID-19 pandemic
- Author
-
Tommi Wallenius, Satu Koivuhovi, and Mari-Pauliina Vainikainen
- Subjects
institutional trust ,pupils’ parents ,covid-19 pandemic ,Education - Abstract
The COVID-19 pandemic in Finland rapidly changed many of the established practices in Finnish schooling. Normal teaching was replaced by distance learning and many daily routines (grouping, school meals etc.) were ordered to be organised following new safety instructions. In this study, we examined how pupils’ parents in Finland have experienced the exceptional schooling practices caused by the pandemic and how their experiences and views relate to parental trust in the Finnish basic education system. The study included three research tasks: 1) to study the school-level variation in parents’ experiences of pandemic-time schooling; 2) to compare parents’ views on the schools’ safety instructions with teachers’ views; and 3) to study how parents’ experiences and views were related to trust factors in the Finnish basic education system. Our data is based on a nationwide research project, which examines the effects of the pandemic on schooling, teaching, learning and wellbeing in Finland. For this study, we utilised data from both the parental questionnaire (N=30,572) and the teacher questionnaire (N=5,797) collected in November 2020. Data were analysed with multilevel structural equation models (MSEM) conducted in the Mplus environment. Our results showed that in general the pupils’ parents were satisfied with pandemic-time schooling. The variance in parents’ views was even surprisingly small, especially when thinking of the notable differences in the schools’ readiness to organise distance learning (Vainikainen et al., forthcoming). Interestingly, the teachers evaluated the adherence to the schools’ safety instructions more critically than pupils’ parents did. As expected, positive experiences on pandemic-time schooling predicted a higher level of trust in the basic education system – especially when the parents reported that the teachers were available for their child, communicated about their child’s progress and organised distance learning with real-time interaction.
- Published
- 2021
- Full Text
- View/download PDF
44. THE CHALLENGE OF ONLINE LANGUAGE LEARNING AND TEACHING: INCLUSIVE CONTENT AND MOTIVATION ENHANCEMENT
- Author
-
MA Liisa Wallenius and Ieva Brazauskaite-Zubaviciene
- Subjects
students’ learning autonomy ,inclusive language learning methods ,online language learning and teaching ,language learning motivation enhancement ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Social Sciences - Abstract
The pandemics of COVID-19 has reinforced online learning and teaching. Online learning and teaching are becoming even more common than contact learning and teaching. For many language teachers, it is becoming a challenge for the methodology they used to apply. The methods had to be converted from a teacher-centred approach to a studentcentred approach. Even more of the study content had to be reoriented to student autonomy in learning. The aim of the paper is to share good practice of four international projects and four online language teaching aids to contribute to an inclusive content and motivation enhancement of online language learning. The first example is the first portal is Smart svenska (Smart Swedish) developed as part of an Aalto Online Learning project (A!Ole) financed by Aalto University. The second portal is a multi-disciplinary and open-access digital language learning portal called Svenskstudier för högskolestuderande (Swedish for higher education), financed by the Finnish Ministry of Education. The third international project and platform of online activities is Erasmus KA2, "Interactive Digital Content Platform to Share, Reuse, and Innovative in the Classroom" (INDIE), financed by the EU. The fourth international project is Nordplus Nordinc Languages, "Multilingualism as a Key to Enhance Students' Employability", financed by the Nordic Council of Ministers. All the analysed learning environments have a common aim which is to encourage student autonomy when learning. The aim is to motivate students by giving them more responsibility and autonomy for their own learning, i.e. student empowerment.
- Published
- 2021
45. The BAriatic surgery SUbstitution and nutrition (BASUN) population: a data-driven exploration of predictors for obesity
- Author
-
Gudrún Höskuldsdóttir, My Engström, Araz Rawshani, Ville Wallenius, Frida Lenér, Lars Fändriks, Karin Mossberg, and Björn Eliasson
- Subjects
Obesity ,Bariatric surgery ,Diet ,Prospective study ,Cohort study ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Background The development of obesity is most likely due to a combination of biological and environmental factors some of which might still be unidentified. We used a machine learning technique to examine the relative importance of more than 100 clinical variables as predictors for BMI. Methods BASUN is a prospective non-randomized cohort study of 971 individuals that received medical or surgical treatment (treatment choice was based on patient’s preferences and clinical criteria, not randomization) for obesity in the Västra Götaland county in Sweden between 2015 and 2017 with planned follow-up for 10 years. This study includes demographic data, BMI, blood tests, and questionnaires before obesity treatment that cover three main areas: gastrointestinal symptoms and eating habits, physical activity and quality of life, and psychological health. We used random forest, with conditional variable importance, to study the relative importance of roughly 100 predictors of BMI, covering 15 domains. We quantified the predictive value of each individual predictor, as well as each domain. Results The participants received medical (n = 382) or surgical treatment for obesity (Roux-en-Y gastric bypass, n = 388; sleeve gastrectomy, n = 201). There were minor differences between these groups before treatment with regard to anthropometrics, laboratory measures and results from questionnaires. The 10 individual variables with the strongest predictive value, in order of decreasing strength, were country of birth, marital status, sex, calcium levels, age, levels of TSH and HbA1c, AUDIT score, BE tendencies according to QEWPR, and TG levels. The strongest domains predicting BMI were: Socioeconomic status, Demographics, Biomarkers (notably TSH), Lifestyle/habits, Biomarkers for cardiovascular disease and diabetes, and Potential anxiety and depression. Conclusions Lifestyle, habits, age, sex and socioeconomic status are some of the strongest predictors for BMI levels. Potential anxiety and / or depression and other characteristics captured using questionnaires have strong predictive value. These results confirm previously suggested associations and advocate prospective studies to examine the value of better characterization of patients eligible for obesity treatment, and consequently to evaluate the treatment effects in groups of patients. Trial registration March 03, 2015; NCT03152617 .
- Published
- 2021
- Full Text
- View/download PDF
46. Depolymerization of biorefinery lignin by improved laccases of the white‐rot fungus Obba rivulosa
- Author
-
Janne Wallenius, Jussi Kontro, Christina Lyra, Jaana Kuuskeri, Xing Wan, Mika A. Kähkönen, Irshad Baig, Paul C. J. Kamer, Jussi Sipilä, Miia R. Mäkelä, Paula Nousiainen, and Kristiina Hildén
- Subjects
Biotechnology ,TP248.13-248.65 - Abstract
Summary Fungal laccases are attracting enzymes for sustainable valorization of biorefinery lignins. To improve the lignin oxidation capacity of two previously characterized laccase isoenzymes from the white‐rot fungus Obba rivulosa, we mutated their substrate‐binding site at T1. As a result, the pH optimum of the recombinantly produced laccase variant rOrLcc2‐D206N shifted by three units towards neutral pH. O. rivulosa laccase variants with redox mediators oxidized both the dimeric lignin model compound and biorefinery poplar lignin. Significant structural changes, such as selective benzylic α‐oxidation, were detected by nuclear magnetic resonance analysis, although no polymerization of lignin was observed by gel permeation chromatography. This suggests that especially rOrLcc2‐D206N is a promising candidate for lignin‐related applications.
- Published
- 2021
- Full Text
- View/download PDF
47. 2-[18F]FDG-PET/CT in Cancer of Unknown Primary Tumor—A Retrospective Register-Based Cohort Study
- Author
-
Heidi Rimer, Melina Sofie Jensen, Sara Elisabeth Dahlsgaard-Wallenius, Lise Eckhoff, Peter Thye-Rønn, Charlotte Kristiansen, Malene Grubbe Hildebrandt, and Oke Gerke
- Subjects
cancer ,2-[18F]FDG-PET/CT ,CT ,survival ,detection rate ,unknown primary site ,Photography ,TR1-1050 ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
We investigated the impact of 2-[18F]FDG-PET/CT on detection rate (DR) of the primary tumor and survival in patients with suspected cancer of unknown primary tumor (CUP), comparing it to the conventional diagnostic imaging method, CT. Patients who received a tentative CUP diagnosis at Odense University Hospital from 2014–2017 were included. Patients receiving a 2-[18F]FDG-PET/CT were assigned to the 2-[18F]FDG-PET/CT group and patients receiving a CT only to the CT group. DR was calculated as the proportion of true positive findings of 2-[18F]FDG-PET/CT and CT scans, separately, using biopsy of the primary tumor, autopsy, or clinical decision as reference standard. Survival analyses included Kaplan–Meier estimates and Cox proportional hazards regression adjusted for age, sex, treatment, and propensity score. We included 193 patients. Of these, 159 were in the 2-[18F]FDG-PET/CT group and 34 were in the CT group. DR was 36.5% in the 2-[18F]FDG-PET/CT group and 17.6% in the CT group, respectively (p = 0.012). Median survival was 7.4 (95% CI 0.4–98.7) months in the 2-[18F]FDG-PET/CT group and 3.8 (95% CI 0.2–98.1) in the CT group. Survival analysis showed a crude hazard ratio of 0.63 (p = 0.024) and an adjusted hazard ratio of 0.68 (p = 0.087) for the 2-[18F]FDG-PET/CT group compared with CT. This study found a significantly higher DR of the primary tumor in suspected CUP patients using 2-[18F]FDG-PET/CT compared with patients receiving only CT, with possible immense clinical importance. No significant difference in survival was found, although a possible tendency towards longer survival in the 2-[18F]FDG-PET/CT group was observed.
- Published
- 2023
- Full Text
- View/download PDF
48. Lipoxins reduce obesity-induced adipose tissue inflammation in 3D-cultured human adipocytes and explant cultures
- Author
-
Matúš Soták, Meenu Rohini Rajan, Madison Clark, Matthew Harms, Alankrita Rani, Jamie D. Kraft, David Tandio, Tong Shen, Kamil Borkowski, Oliver Fiehn, John W. Newman, Marianne Quiding-Järbrink, Christina Biörserud, Peter Apelgren, Trude Staalesen, Carolina E. Hagberg, Jeremie Boucher, Ville Wallenius, Stephan Lange, and Emma Börgeson
- Subjects
Precision medicine ,Biological sciences ,Physiology ,Human metabolism ,Cell biology ,Science - Abstract
Summary: Adipose tissue inflammation drives obesity-related cardiometabolic diseases. Enhancing endogenous resolution mechanisms through administration of lipoxin A4, a specialized pro-resolving lipid mediator, was shown to reduce adipose inflammation and subsequently protects against obesity-induced systemic disease in mice. Here, we demonstrate that lipoxins reduce inflammation in 3D-cultured human adipocytes and adipose tissue explants from obese patients. Approximately 50% of patients responded particularly well to lipoxins by reducing inflammatory cytokines and promoting an anti-inflammatory M2 macrophage phenotype. Responding patients were characterized by elevated systemic levels of C-reactive protein, which causes inflammation in cultured human adipocytes. Responders appeared more prone to producing anti-inflammatory oxylipins and displayed elevated prostaglandin D2 levels, which has been interlinked with transcription of lipoxin-generating enzymes. Using explant cultures, this study provides the first proof-of-concept evidence supporting the therapeutic potential of lipoxins in reducing human adipose tissue inflammation. Our data further indicate that lipoxin treatment may require a tailored personalized-medicine approach.
- Published
- 2022
- Full Text
- View/download PDF
49. Comparison of Image Quality and Quantification Parameters between Q.Clear and OSEM Reconstruction Methods on FDG-PET/CT Images in Patients with Metastatic Breast Cancer
- Author
-
Mohammad Naghavi-Behzad, Marianne Vogsen, Oke Gerke, Sara Elisabeth Dahlsgaard-Wallenius, Henriette Juel Nissen, Nick Møldrup Jakobsen, Poul-Erik Braad, Mie Holm Vilstrup, Paul Deak, Malene Grubbe Hildebrandt, and Thomas Lund Andersen
- Subjects
reconstruction algorithm ,FDG-PET/CT ,metastatic breast cancer ,Q.Clear ,Photography ,TR1-1050 ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
We compared the image quality and quantification parameters through bayesian penalized likelihood reconstruction algorithm (Q.Clear) and ordered subset expectation maximization (OSEM) algorithm for 2-[18F]FDG-PET/CT scans performed for response monitoring in patients with metastatic breast cancer in prospective setting. We included 37 metastatic breast cancer patients diagnosed and monitored with 2-[18F]FDG-PET/CT at Odense University Hospital (Denmark). A total of 100 scans were analyzed blinded toward Q.Clear and OSEM reconstruction algorithms regarding image quality parameters (noise, sharpness, contrast, diagnostic confidence, artefacts, and blotchy appearance) using a five-point scale. The hottest lesion was selected in scans with measurable disease, considering the same volume of interest in both reconstruction methods. SULpeak (g/mL) and SUVmax (g/mL) were compared for the same hottest lesion. There was no significant difference regarding noise, diagnostic confidence, and artefacts within reconstruction methods; Q.Clear had significantly better sharpness (p < 0.001) and contrast (p = 0.001) than the OSEM reconstruction, while the OSEM reconstruction had significantly less blotchy appearance compared with Q.Clear reconstruction (p < 0.001). Quantitative analysis on 75/100 scans indicated that Q.Clear reconstruction had significantly higher SULpeak (5.33 ± 2.8 vs. 4.85 ± 2.5, p < 0.001) and SUVmax (8.27 ± 4.8 vs. 6.90 ± 3.8, p < 0.001) compared with OSEM reconstruction. In conclusion, Q.Clear reconstruction revealed better sharpness, better contrast, higher SUVmax, and higher SULpeak, while OSEM reconstruction had less blotchy appearance.
- Published
- 2023
- Full Text
- View/download PDF
50. Laparoscopic Heller myotomy or pneumatic dilatation in achalasia: results of a prospective, randomized study with at least a decade of follow-up
- Author
-
Sediqi, Ehsan, Tsoposidis, Alexandros, Wallenius, Ville, Axelsson, Hans, Persson, Jan, Johnsson, Erik, Lundell, Lars, and Kostic, Srdjan
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.