46 results on '"Atabaki-Pasdar, Naeimeh"'
Search Results
2. Correction: Investigating the causal relationships between excess adiposity and cardiometabolic health in men and women
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Mutie, Pascal M., Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Coral, Daniel, Fitipaldi, Hugo, Tsereteli, Neli, Tajes, Juan Fernandez, Franks, Paul W., and Giordano, Giuseppe N.
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- 2024
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3. The value of neck adipose tissue as a predictor for metabolic risk in health and type 2 diabetes
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Cresswell, Emily, Basty, Nicolas, Atabaki Pasdar, Naeimeh, Karpe, Fredrik, and Pinnick, Katherine E.
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- 2024
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4. A phenome-wide comparative analysis of genetic discordance between obesity and type 2 diabetes
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Coral, Daniel E., Fernandez-Tajes, Juan, Tsereteli, Neli, Pomares-Millan, Hugo, Fitipaldi, Hugo, Mutie, Pascal M., Atabaki-Pasdar, Naeimeh, Kalamajski, Sebastian, Poveda, Alaitz, Miller-Fleming, Tyne W., Zhong, Xue, Giordano, Giuseppe N., Pearson, Ewan R., Cox, Nancy J., and Franks, Paul W.
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- 2023
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5. Investigating the causal relationships between excess adiposity and cardiometabolic health in men and women
- Author
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Mutie, Pascal M., Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Coral, Daniel, Fitipaldi, Hugo, Tsereteli, Neli, Tajes, Juan Fernandez, Franks, Paul W., and Giordano, Giuseppe N.
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- 2023
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6. Genetic studies of abdominal MRI data identify genes regulating hepcidin as major determinants of liver iron concentration
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Jennison, Christopher, Ehrhardt, Beate, Baum, Patrick, Schoelsch, Corinna, Freijer, Jan, Grempler, Rolf, Graefe-Mody, Ulrike, Hennige, Anita, Dings, Christiane, Lehr, Thorsten, Scherer, Nina, Sihinecich, Iryna, Pattou, Francois, Raverdi, Violeta, Caiazzo, Robert, Torres, Fanelly, Verkindt, Helene, Mari, Andrea, Tura, Andrea, Giorgino, Toni, Bizzotto, Roberto, Froguel, Philippe, Bonneford, Amelie, Canouil, Mickael, Dhennin, Veronique, Brorsson, Caroline, Brunak, Soren, De Masi, Federico, Gudmundsdóttir, Valborg, Pedersen, Helle, Banasik, Karina, Thomas, Cecilia, Sackett, Peter, Staerfeldt, Hans-Henrik, Lundgaard, Agnete, Nilsson, Birgitte, Nielsen, Agnes, Mazzoni, Gianluca, Karaderi, Tugce, Rasmussen, Simon, Johansen, Joachim, Allesøe, Rosa, Fritsche, Andreas, Thorand, Barbara, Adamski, Jurek, Grallert, Harald, Haid, Mark, Sharma, Sapna, Troll, Martina, Adam, Jonathan, Ferrer, Jorge, Eriksen, Heather, Frost, Gary, Haussler, Ragna, Hong, Mun-gwan, Schwenk, Jochen, Uhlen, Mathias, Nicolay, Claudia, Pavo, Imre, Steckel-Hamann, Birgit, Thomas, Melissa, Adragni, Kofi, Wu, Han, Hart, Leen't, Roderick, Slieker, van Leeuwen, Nienke, Dekkers, Koen, Frau, Francesca, Gassenhuber, Johann, Jablonka, Bernd, Musholt, Petra, Ruetten, Hartmut, Tillner, Joachim, Baltauss, Tania, Bernard Poenaru, Oana, de Preville, Nathalie, Rodriquez, Marianne, Arumugam, Manimozhiyan, Allin, Kristine, Engelbrechtsen, Line, Hansen, Torben, Hansen, Tue, Forman, Annemette, Jonsson, Anna, Pedersen, Oluf, Dutta, Avirup, Vogt, Josef, Vestergaard, Henrik, Laakso, Markku, Kokkola, Tarja, Kuulasmaa, Teemu, Franks, Paul, Giordano, Nick, Pomares-Millan, Hugo, Fitipaldi, Hugo, Mutie, Pascal, Klintenberg, Maria, Bergstrom, Margit, Groop, Leif, Ridderstrale, Martin, Atabaki Pasdar, Naeimeh, Deshmukh, Harshal, Heggie, Alison, Wake, Dianne, McEvoy, Donna, McVittie, Ian, Walker, Mark, Hattersley, Andrew, Hill, Anita, Jones, Angus, McDonald, Timothy, Perry, Mandy, Nice, Rachel, Hudson, Michelle, Thorne, Claire, Dermitzakis, Emmanouil, Viñuela, Ana, Cabrelli, Louise, Loftus, Heather, Dawed, Adem, Donnelly, Louise, Forgie, Ian, Pearson, Ewan, Palmer, Colin, Brown, Andrew, Koivula, Robert, Wesolowska-Andersen, Agata, Abdalla, Moustafa, McRobert, Nicky, Fernandez, Juan, Jiao, Yunlong, Robertson, Neil, Gough, Stephen, Kaye, Jane, Mourby, Miranda, Mahajan, Anubha, McCarthy, Mark, Shah, Nisha, Teare, Harriet, Holl, Reinhard, Koopman, Anitra, Rutters, Femke, Beulens, Joline, Groeneveld, Lenka, Bell, Jimmy, Thomas, Louise, Whitcher, Brandon, Wilman, Henry R., Parisinos, Constantinos A., Atabaki-Pasdar, Naeimeh, Kelly, Matt, Thomas, E. Louise, Neubauer, Stefan, Hingorani, Aroon D., Patel, Riyaz S., Hemingway, Harry, Franks, Paul W., Bell, Jimmy D., Banerjee, Rajarshi, and Yaghootkar, Hanieh
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- 2019
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7. Author Correction: An investigation of causal relationships between prediabetes and vascular complications
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Mutie, Pascal M., Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Jordan, Nina, Adams, Rachel, Daly, Nicole L., Tajes, Juan Fernandes, Giordano, Giuseppe N., and Franks, Paul W.
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- 2021
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8. Glucose-dependent insulinotropic peptide and risk of cardiovascular events and mortality: a prospective study
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Jujić, Amra, Atabaki-Pasdar, Naeimeh, Nilsson, Peter M., Almgren, Peter, Hakaste, Liisa, Tuomi, Tiinamaija, Berglund, Lisa M., Franks, Paul W., Holst, Jens J., Prasad, Rashmi B., Torekov, Signe S., Ravassa, Susana, Díez, Javier, Persson, Margaretha, Melander, Olle, Gomez, Maria F., Groop, Leif, Ahlqvist, Emma, and Magnusson, Martin
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- 2020
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9. An investigation of causal relationships between prediabetes and vascular complications
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Mutie, Pascal M., Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Jordan, Nina, Adams, Rachel, Daly, Nicole L., Tajes, Juan Fernandes, Giordano, Giuseppe N., and Franks, Paul W.
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- 2020
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10. Genetic analysis of blood molecular phenotypes reveals common properties in the regulatory networks affecting complex traits
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Brown, Andrew A., Fernandez-Tajes, Juan J., Hong, Mun gwan, Brorsson, Caroline A., Koivula, Robert W., Davtian, David, Dupuis, Théo, Sartori, Ambra, Michalettou, Theodora Dafni, Forgie, Ian M., Adam, Jonathan, Allin, Kristine H., Caiazzo, Robert, Cederberg, Henna, De Masi, Federico, Elders, Petra J.M., Giordano, Giuseppe N., Haid, Mark, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew T., Heggie, Alison J., Howald, Cédric, Jones, Angus G., Kokkola, Tarja, Laakso, Markku, Mahajan, Anubha, Mari, Andrea, McDonald, Timothy J., McEvoy, Donna, Mourby, Miranda, Musholt, Petra B., Nilsson, Birgitte, Pattou, Francois, Penet, Deborah, Raverdy, Violeta, Ridderstråle, Martin, Romano, Luciana, Rutters, Femke, Sharma, Sapna, Teare, Harriet, ‘t Hart, Leen, Tsirigos, Konstantinos D., Vangipurapu, Jagadish, Vestergaard, Henrik, Brunak, Søren, Franks, Paul W., Frost, Gary, Grallert, Harald, Jablonka, Bernd, McCarthy, Mark I., Pavo, Imre, Pedersen, Oluf, Ruetten, Hartmut, Walker, Mark, Adragni, Kofi, Allesøe, Rosa Lundbye L., Artati, Anna A., Arumugam, Manimozhiyan, Atabaki-Pasdar, Naeimeh, Baltauss, Tania, Banasik, Karina, Barnett, Anna L., Baum, Patrick, Bell, Jimmy D., Beulens, Joline W., Bianzano, Susanna B., Bizzotto, Roberto, Bonnefond, Amelie, Cabrelli, Louise, Dale, Matilda, Dawed, Adem Y., de Preville, Nathalie, Dekkers, Koen F., Deshmukh, Harshal A., Dings, Christiane, Donnelly, Louise, Dutta, Avirup, Ehrhardt, Beate, Engelbrechtsen, Line, Eriksen, Rebeca, Fan, Yong, Ferrer, Jorge, Fitipaldi, Hugo, Forman, Annemette, Fritsche, Andreas, Froguel, Philippe, Gassenhuber, Johann, Gough, Stephen, Graefe-Mody, Ulrike, Grempler, Rolf, Groeneveld, Lenka, Groop, Leif, Gudmundsdóttir, Valborg, Gupta, Ramneek, Hennige, Anita M.H., Hill, Anita V., Holl, Reinhard W., Hudson, Michelle, Jacobsen, Ulrik Plesner, Jennison, Christopher, Johansen, Joachim, Jonsson, Anna, Karaderi, Tugce, Kaye, Jane, Kennedy, Gwen, Klintenberg, Maria, Kuulasmaa, Teemu, Lehr, Thorsten, Loftus, Heather, Lundgaard, Agnete Troen T., Mazzoni, Gianluca, McRobert, Nicky, McVittie, Ian, Nice, Rachel, Nicolay, Claudia, Nijpels, Giel, Palmer, Colin N., Pedersen, Helle K., Perry, Mandy H., Pomares-Millan, Hugo, Prehn, Cornelia P., Ramisch, Anna, Rasmussen, Simon, Robertson, Neil, Rodriquez, Marianne, Sackett, Peter, Scherer, Nina, Shah, Nisha, Sihinevich, Iryna, Slieker, Roderick C., Sondertoft, Nadja B., Steckel-Hamann, Birgit, Thomas, Melissa K., Thomas, Cecilia Engel E., Thomas, Elizabeth Louise L., Thorand, Barbara, Thorne, Claire E., Tillner, Joachim, Tura, Andrea, Uhlen, Mathias, van Leeuwen, Nienke, van Oort, Sabine, Verkindt, Helene, Vogt, Josef, Wad Sackett, Peter W., Wesolowska-Andersen, Agata, Whitcher, Brandon, White, Margaret W., Adamski, Jerzy, Schwenk, Jochen M., Pearson, Ewan R., Dermitzakis, Emmanouil T., Viñuela, Ana, Brown, Andrew A., Fernandez-Tajes, Juan J., Hong, Mun gwan, Brorsson, Caroline A., Koivula, Robert W., Davtian, David, Dupuis, Théo, Sartori, Ambra, Michalettou, Theodora Dafni, Forgie, Ian M., Adam, Jonathan, Allin, Kristine H., Caiazzo, Robert, Cederberg, Henna, De Masi, Federico, Elders, Petra J.M., Giordano, Giuseppe N., Haid, Mark, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew T., Heggie, Alison J., Howald, Cédric, Jones, Angus G., Kokkola, Tarja, Laakso, Markku, Mahajan, Anubha, Mari, Andrea, McDonald, Timothy J., McEvoy, Donna, Mourby, Miranda, Musholt, Petra B., Nilsson, Birgitte, Pattou, Francois, Penet, Deborah, Raverdy, Violeta, Ridderstråle, Martin, Romano, Luciana, Rutters, Femke, Sharma, Sapna, Teare, Harriet, ‘t Hart, Leen, Tsirigos, Konstantinos D., Vangipurapu, Jagadish, Vestergaard, Henrik, Brunak, Søren, Franks, Paul W., Frost, Gary, Grallert, Harald, Jablonka, Bernd, McCarthy, Mark I., Pavo, Imre, Pedersen, Oluf, Ruetten, Hartmut, Walker, Mark, Adragni, Kofi, Allesøe, Rosa Lundbye L., Artati, Anna A., Arumugam, Manimozhiyan, Atabaki-Pasdar, Naeimeh, Baltauss, Tania, Banasik, Karina, Barnett, Anna L., Baum, Patrick, Bell, Jimmy D., Beulens, Joline W., Bianzano, Susanna B., Bizzotto, Roberto, Bonnefond, Amelie, Cabrelli, Louise, Dale, Matilda, Dawed, Adem Y., de Preville, Nathalie, Dekkers, Koen F., Deshmukh, Harshal A., Dings, Christiane, Donnelly, Louise, Dutta, Avirup, Ehrhardt, Beate, Engelbrechtsen, Line, Eriksen, Rebeca, Fan, Yong, Ferrer, Jorge, Fitipaldi, Hugo, Forman, Annemette, Fritsche, Andreas, Froguel, Philippe, Gassenhuber, Johann, Gough, Stephen, Graefe-Mody, Ulrike, Grempler, Rolf, Groeneveld, Lenka, Groop, Leif, Gudmundsdóttir, Valborg, Gupta, Ramneek, Hennige, Anita M.H., Hill, Anita V., Holl, Reinhard W., Hudson, Michelle, Jacobsen, Ulrik Plesner, Jennison, Christopher, Johansen, Joachim, Jonsson, Anna, Karaderi, Tugce, Kaye, Jane, Kennedy, Gwen, Klintenberg, Maria, Kuulasmaa, Teemu, Lehr, Thorsten, Loftus, Heather, Lundgaard, Agnete Troen T., Mazzoni, Gianluca, McRobert, Nicky, McVittie, Ian, Nice, Rachel, Nicolay, Claudia, Nijpels, Giel, Palmer, Colin N., Pedersen, Helle K., Perry, Mandy H., Pomares-Millan, Hugo, Prehn, Cornelia P., Ramisch, Anna, Rasmussen, Simon, Robertson, Neil, Rodriquez, Marianne, Sackett, Peter, Scherer, Nina, Shah, Nisha, Sihinevich, Iryna, Slieker, Roderick C., Sondertoft, Nadja B., Steckel-Hamann, Birgit, Thomas, Melissa K., Thomas, Cecilia Engel E., Thomas, Elizabeth Louise L., Thorand, Barbara, Thorne, Claire E., Tillner, Joachim, Tura, Andrea, Uhlen, Mathias, van Leeuwen, Nienke, van Oort, Sabine, Verkindt, Helene, Vogt, Josef, Wad Sackett, Peter W., Wesolowska-Andersen, Agata, Whitcher, Brandon, White, Margaret W., Adamski, Jerzy, Schwenk, Jochen M., Pearson, Ewan R., Dermitzakis, Emmanouil T., and Viñuela, Ana
- Abstract
We evaluate the shared genetic regulation of mRNA molecules, proteins and metabolites derived from whole blood from 3029 human donors. We find abundant allelic heterogeneity, where multiple variants regulate a particular molecular phenotype, and pleiotropy, where a single variant associates with multiple molecular phenotypes over multiple genomic regions. The highest proportion of share genetic regulation is detected between gene expression and proteins (66.6%), with a further median shared genetic associations across 49 different tissues of 78.3% and 62.4% between plasma proteins and gene expression. We represent the genetic and molecular associations in networks including 2828 known GWAS variants, showing that GWAS variants are more often connected to gene expression in trans than other molecular phenotypes in the network. Our work provides a roadmap to understanding molecular networks and deriving the underlying mechanism of action of GWAS variants using different molecular phenotypes in an accessible tissue.
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- 2023
11. Predicting and elucidating the etiology of fatty liver disease: A machine learning modeling and validation study in the IMI DIRECT cohorts
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Atabaki-Pasdar, Naeimeh and Ohlsson, Mattias
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Diagnostic imaging -- Health aspects ,Machine learning -- Health aspects ,Type 2 diabetes -- Risk factors ,Enzymes -- Health aspects ,Fatty liver -- Risk factors ,Biological sciences - Abstract
Background Non-alcoholic fatty liver disease (NAFLD) is highly prevalent and causes serious health complications in individuals with and without type 2 diabetes (T2D). Early diagnosis of NAFLD is important, as this can help prevent irreversible damage to the liver and, ultimately, hepatocellular carcinomas. We sought to expand etiological understanding and develop a diagnostic tool for NAFLD using machine learning. Methods and findings We utilized the baseline data from IMI DIRECT, a multicenter prospective cohort study of 3,029 European-ancestry adults recently diagnosed with T2D (n = 795) or at high risk of developing the disease (n = 2,234). Multi-omics (genetic, transcriptomic, proteomic, and metabolomic) and clinical (liver enzymes and other serological biomarkers, anthropometry, measures of beta-cell function, insulin sensitivity, and lifestyle) data comprised the key input variables. The models were trained on MRI-image-derived liver fat content ( Conclusions In this study, we developed several models with different combinations of clinical and omics data and identified biological features that appear to be associated with liver fat accumulation. In general, the clinical variables showed better prediction ability than the complex omics variables. However, the combination of omics and clinical variables yielded the highest accuracy. We have incorporated the developed clinical models into a web interface (see: https://www.predictliverfat.org/) and made it available to the community. Trial registration ClinicalTrials.gov NCT03814915., Author(s): Naeimeh Atabaki-Pasdar 1, Mattias Ohlsson 2,3, Ana Viñuela 4,5,6, Francesca Frau 7, Hugo Pomares-Millan 1, Mark Haid 8, Angus G. Jones 9, E. Louise Thomas 10, Robert W. Koivula [...]
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- 2020
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12. Investigating the causal relationships between excess adiposity and cardiometabolic health in men and women
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Mutie, Pascal M., primary, Pomares-Milan, Hugo, additional, Atabaki-Pasdar, Naeimeh, additional, Coral, Daniel, additional, Fitipaldi, Hugo, additional, Tsereteli, Neli, additional, Tajes, Juan Fernandez, additional, Franks, Paul W., additional, and Giordano, Giuseppe N., additional
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- 2022
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13. Subtyping of obesity and type 2 diabetes using genetic discordance: a phenome-wide comparative analysis
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Coral, Daniel, primary, Tajes, Juan Fernandez, additional, Tsereteli, Neli, additional, Giordano, Giuseppe, additional, Pomares-Millan, Hugo, additional, Mutie, Pascal, additional, Atabaki-Pasdar, Naeimeh, additional, Kalamajski, Sebastian, additional, Poveda, Alaitz, additional, Miller-Fleming, Tyne, additional, Zhong, Xue, additional, Cox, Nancy, additional, and Franks, Paul, additional
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- 2022
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14. Estimating the Direct Effect between Dietary Macronutrients and Cardiometabolic Disease, Accounting for Mediation by Adiposity and Physical Activity
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Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Coral, Daniel, Johansson, Ingegerd, Giordano, Giuseppe N., Franks, Paul W., Pomares-Millan, Hugo, Atabaki-Pasdar, Naeimeh, Coral, Daniel, Johansson, Ingegerd, Giordano, Giuseppe N., and Franks, Paul W.
- Abstract
Assessing the causal effects of individual dietary macronutrients and cardiometabolic disease is challenging owing to the complexity to distinguish direct effects from those mediated or confounded by other factors. To estimate these effects, intake of protein, carbohydrate, sugar, fat, and its subtypes were obtained using food frequency data derived from a Swedish population-based cohort (n~60,000). Data on clinical outcomes (i.e., type 2 diabetes (T2D) and cardiovascular disease (CVD) incidence) were obtained by linking health registry data. We assessed the magnitude of direct and mediated effects of diet, adiposity and physical activity on T2D and CVD using structural equation modelling (SEM). To strengthen causal inference, we used Mendelian randomization (MR) to model macronutrient intake exposures against clinical outcomes. We identified likely causal effects of genetically predicted carbohydrate intake (including sugar intake) and T2D, independent of adiposity and physical activity. Pairwise, serial-and parallel-mediational configurations yielded similar results. In the integrative genomic analyses, the candidate causal variant localized to the established type 2 diabetes gene TCF7L2. These findings may be informative when considering which dietary modifications included in nutritional guidelines are most likely to elicit health-promoting effects.
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- 2022
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15. Estimating the Direct Effect between Dietary Macronutrients and Cardiometabolic Disease, Accounting for Mediation by Adiposity and Physical Activity
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Pomares-Millan, Hugo, primary, Atabaki-Pasdar, Naeimeh, additional, Coral, Daniel, additional, Johansson, Ingegerd, additional, Giordano, Giuseppe N., additional, and Franks, Paul W., additional
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- 2022
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16. Inferring causal pathways between metabolic processes and liver fat accumulation: an IMI DIRECT study
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Atabaki-Pasdar, Naeimeh, primary, Pomares-Millan, Hugo, additional, Koivula, Robert W, additional, Tura, Andrea, additional, Brown, Andrew, additional, Viñuela, Ana, additional, Agudelo, Leandro, additional, Coral, Daniel, additional, van Oort, Sabine, additional, Allin, Kristine, additional, Chabanova, Elizaveta, additional, Cederberg, Henna, additional, De Masi, Federico, additional, Elders, Petra, additional, Tajes, Juan Fernandez, additional, Forgie, Ian M, additional, Hansen, Tue H, additional, Heggie, Alison, additional, Jones, Angus, additional, Kokkola, Tarja, additional, Mahajan, Anubha, additional, McDonald, Timothy J, additional, McEvoy, Donna, additional, Tsirigos, Konstantinos, additional, Teare, Harriet, additional, Vangipurapu, Jagadish, additional, Vestergaard, Henrik, additional, Adamski, Jerzy, additional, Beulens, Joline WJ, additional, Brunak, Søren, additional, Dermitzakis, Emmanouil, additional, Hansen, Torben, additional, Hattersley, Andrew T, additional, Laakso, Markku, additional, Pedersen, Oluf, additional, Ridderstråle, Martin, additional, Ruetten, Hartmut, additional, Rutters, Femke, additional, Schwenk, Jochen M, additional, Walker, Mark, additional, Giordano, Giuseppe N, additional, Ohlsson, Mattias, additional, Gupta, Ramneek, additional, Mari, Andrea, additional, McCarthy, Mark I, additional, Thomas, E Louise, additional, Bell, Jimmy D, additional, Pavo, Imre, additional, Pearson, Ewan R, additional, and Franks, Paul W, additional
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- 2021
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17. Metabolic resilience is encoded in genome plasticity
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Agudelo, Leandro, primary, Tuyeras, Remy, additional, Llinares, Claudia, additional, Morcuende, Alvaro, additional, Park, Yongjin, additional, Sun, Na, additional, Linna-Kuosmanen, Suvi, additional, Atabaki-Pasdar, Naeimeh, additional, Ho, Li - Lun, additional, Galani, Kyriakitsa, additional, Franks, Paul, additional, Kutlu, Burak, additional, Grove, Kevin, additional, Femenia, Teresa, additional, and Kellis, Manolis, additional
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- 2021
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18. Metabolic resilience is encoded in genome plasticity
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Agudelo, Leandro Z., primary, Tuyeras, Remy, additional, Llinares, Claudia, additional, Morcuende, Alvaro, additional, Park, Yongjin, additional, Sun, Na, additional, Linna-Kuosmanen, Suvi, additional, Atabaki-Pasdar, Naeimeh, additional, Ho, Li-Lun, additional, Galani, Kyriakitsa, additional, Franks, Paul W., additional, Kutlu, Burak, additional, Grove, Kevin, additional, Femenia, Teresa, additional, and Kellis, Manolis, additional
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- 2021
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19. Correction to: The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study (Diabetologia, (2020), 63, 4, (744-756), 10.1007/s00125-019-05083-6)
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Koivula, Robert W., Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N., White, Tom, Adamski, Jerzy, Bell, Jimmy D., Beulens, Joline, Brage, S. ren, Brunak, S. ren, de Masi, Federico, Dermitzakis, Emmanouil T., Forgie, Ian M., Frost, Gary, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J., Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M., Teare, Harriet J. A., Thomas, E. Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I., Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, Franks, Paul W., Epidemiology and Data Science, ACS - Diabetes & metabolism, APH - Health Behaviors & Chronic Diseases, APH - Aging & Later Life, and ACS - Heart failure & arrhythmias
- Abstract
Unfortunately, ‘Present address’ was omitted from one of the addresses provided for Mark I. McCarthy (#26). The corrected address details are given on the following page.
- Published
- 2021
20. Glucose-Dependent Insulinotropic Peptide in the High-Normal Range Is Associated With Increased Carotid Intima-Media Thickness
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Jujic, Amra, Nilsson, Peter M., Atabaki-Pasdar, Naeimeh, Dieden, Anna, Tuomi, Tiinamaija, Franks, Paul W., Holst, Jens Juul, Torekov, Signe Sorensen, Ravassa, Susana, Diez, Javier, Persson, Margaretha, Ahlqvist, Emma, Melander, Olle, Gomez, Maria F., Groop, Leif, Magnusson, Martin, Jujic, Amra, Nilsson, Peter M., Atabaki-Pasdar, Naeimeh, Dieden, Anna, Tuomi, Tiinamaija, Franks, Paul W., Holst, Jens Juul, Torekov, Signe Sorensen, Ravassa, Susana, Diez, Javier, Persson, Margaretha, Ahlqvist, Emma, Melander, Olle, Gomez, Maria F., Groop, Leif, and Magnusson, Martin
- Abstract
OBJECTIVE While existing evidence supports beneficial cardiovascular effects of glucagon-like peptide 1 (GLP-1), emerging studies suggest that glucose-dependent insulinotropic peptide (GIP) and/or signaling via the GIP receptor may have untoward cardiovascular effects. Indeed, recent studies show that fasting physiological GIP levels are associated with total mortality and cardiovascular mortality, and it was suggested that GIP plays a role in pathogenesis of coronary artery disease. We investigated the associations between fasting and postchallenge GIP and GLP-1 concentrations and subclinical atherosclerosis as measured by mean intima-media thickness in the common carotid artery (IMT(mean)CCA) and maximal intima-media thickness in the carotid bifurcation (IMT(max)Bulb). RESEARCH DESIGN AND METHODS Participants at reexamination within the Malmo Diet and Cancer-Cardiovascular Cohort study (n = 3,734, mean age 72.5 years, 59.3% women, 10.8% subjects with diabetes, fasting GIP available for 3,342 subjects, fasting GLP-1 available for 3,299 subjects) underwent oral glucose tolerance testing and carotid ultrasound. RESULTS In linear regression analyses, each 1-SD increment of fasting GIP was associated with increased (per mm) IMT(mean)CCA (beta = 0.010, P = 0.010) and IMT(max)Bulb (beta = 0.014; P = 0.040) in models adjusted for known risk factors and glucose metabolism. In contrast, each 1-SD increment of fasting GLP-1 was associated with decreased IMT(max)Bulb (per mm, beta = -0.016, P = 0.014). These associations remained significant when subjects with diabetes were excluded from analyses. CONCLUSIONS In a Swedish elderly population, physiologically elevated levels of fasting GIP are associated with increased IMT(mean)CCA, while GLP-1 is associated with decreased IMT(max)Bulb, further emphasizing diverging cardiovascular effects of these two incretin hormones.
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- 2021
21. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study
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Koivula, Robert W, Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N, White, Tom, Adamski, Jerzy, Bell, Jimmy D, Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T, Forgie, Ian M, Frost, Gary, Hansen, Torben, Hansen, Tue H, Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J, Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M, Teare, Harriet JA, Thomas, E Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I, Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, Franks, Paul W, IMI DIRECT Consortium, Koivula, Robert W [0000-0002-1646-4163], and Apollo - University of Cambridge Repository
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Blood Glucose ,Male ,Denmark ,Glycemic Control ,Ectopic fat ,Cohort Studies ,Glycaemic control ,Homeostasis ,Humans ,Exercise ,Finland ,Aged ,Netherlands ,Sweden ,Physical activity ,Beta cell function ,Type 2 diabetes ,Glucose Tolerance Test ,Middle Aged ,Insulin sensitivity ,Cross-Sectional Studies ,Diabetes Mellitus, Type 2 ,Structural equation modelling ,Female ,Insulin Resistance ,Energy Metabolism ,Prediabetes - Abstract
AIMS/HYPOTHESIS: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435). METHODS: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively. RESULTS: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle. CONCLUSIONS/INTERPRETATION: These analyses partially support the mechanisms proposed in the twin-cycle model and highlight mechanistic pathways through which insulin sensitivity and liver fat mediate the association between physical activity and glycaemic control.
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- 2020
22. Enhancing prediction and causal inference in metabolic dyshomeostasis
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Atabaki Pasdar, Naeimeh
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Endocrinology and Diabetes - Abstract
This thesis is focused on two globally prevalent diseases: i) non-alcoholic fatty liver disease (NAFLD) and ii) type 2 diabetes (T2D), with an overall aim of improving prediction and causal inference in the context of these conditions. Our projects were mainly conducted using IMI DIRECT and UK Biobank datasets including multi-omics data, extensive environmental exposures, and biological intermediates.In paper I, we utilized structural equation modeling to test the 'twin-cycle' hypothesis concerning interactions between the liver and the pancreas in the etiology of T2D. Furthermore, the association of physical activity with glycemic control was investigated within the twin-cycle hypothesis. Our results showed the association of physical activity with several metabolic traits and factors. Moreover, the mediation effect of basal insulin secretion rate, insulin sensitivity and liver fat was identified from physical activity towards glucose regulation.In paper II, we developed a series of machine learning-based models for the diagnosis of fatty liver, using different combinations of complex clinical and omics input data, to screen at-risk populations for NAFLD. Beta-cell function and insulin sensitivity appeared to be the most informative predictors in the developed diagnostic models. Furthermore, the derived importance lists of each data set (clinical, genetic, transcriptomic, proteomic, and metabolomic) were highlighting previous findings and suggesting potential molecular features of the NAFLD etiology.In paper III, Bayesian network and Mendelian randomization approaches were deployed to examine a range of putative causal associations underlying the development of fatty liver. Our analyses identified basal insulin secretion rate and visceral fat as two key drivers. In addition, the sensitivity analysis on diabetes and non-diabetes strata identified a network mostly dominated by dysglycemia in presence of T2D, whereas, it was mainly controlled by excess adiposity in the absence of T2D. In paper IV, genotype-based recall (GBR) clinical trials, in which the genetic burden of individuals is used in recruiting two groups of participants with a high and low genetic risk score, were simulated and compared with the conventional randomized controlled trials (RCTs) in terms of their statistical power and the required sample sizes. The analysis showed that GBR trials are, under several diverse scenarios, more powerful than conventional RCTs for testing gene-treatment interactions.
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- 2020
23. Predicting and elucidating the etiology of fatty liver disease:A machine learning modeling and validation study in the IMI DIRECT cohorts
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Atabaki-Pasdar, Naeimeh, Ohlsson, Mattias, Viñuela, Ana, Frau, Francesca, Pomares-Millan, Hugo, Haid, Mark, Jones, Angus G, Thomas, E Louise, Koivula, Robert W, Kurbasic, Azra, Mutie, Pascal M, Fitipaldi, Hugo, Fernandez, Juan, Dawed, Adem Y, Giordano, Giuseppe N, Forgie, Ian M, McDonald, Timothy J, Rutters, Femke, Cederberg, Henna, Chabanova, Elizaveta, Dale, Matilda, Masi, Federico De, Thomas, Cecilia Engel, Allin, Kristine H., Hansen, Tue H, Heggie, Alison, Hong, Mun-Gwan, Elders, Petra J M, Kennedy, Gwen, Kokkola, Tarja, Pedersen, Helle Krogh, Mahajan, Anubha, McEvoy, Donna, Pattou, Francois, Raverdy, Violeta, Häussler, Ragna S, Sharma, Sapna, Thomsen, Henrik S, Vangipurapu, Jagadish, Vestergaard, Henrik, Adamski, Jerzy, Musholt, Petra B, Brage, Søren, Brunak, Søren, Dermitzakis, Emmanouil, Frost, Gary, Hansen, Torben, Laakso, Markku, and Pedersen, Oluf
- Abstract
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is highly prevalent and causes serious health complications in individuals with and without type 2 diabetes (T2D). Early diagnosis of NAFLD is important, as this can help prevent irreversible damage to the liver and, ultimately, hepatocellular carcinomas. We sought to expand etiological understanding and develop a diagnostic tool for NAFLD using machine learning.METHODS AND FINDINGS: We utilized the baseline data from IMI DIRECT, a multicenter prospective cohort study of 3,029 European-ancestry adults recently diagnosed with T2D (n = 795) or at high risk of developing the disease (n = 2,234). Multi-omics (genetic, transcriptomic, proteomic, and metabolomic) and clinical (liver enzymes and other serological biomarkers, anthropometry, measures of beta-cell function, insulin sensitivity, and lifestyle) data comprised the key input variables. The models were trained on MRI-image-derived liver fat content (CONCLUSIONS: In this study, we developed several models with different combinations of clinical and omics data and identified biological features that appear to be associated with liver fat accumulation. In general, the clinical variables showed better prediction ability than the complex omics variables. However, the combination of omics and clinical variables yielded the highest accuracy. We have incorporated the developed clinical models into a web interface (see: https://www.predictliverfat.org/) and made it available to the community.TRIAL REGISTRATION: ClinicalTrials.gov NCT03814915.
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- 2020
24. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes:an IMI DIRECT study
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Koivula, Robert W, Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N, White, Tom, Adamski, Jerzy, Bell, Jimmy D, Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T, Forgie, Ian M, Frost, Gary, Hansen, Torben, Hansen, Tue H, Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J, Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M, Teare, Harriet J A, Thomas, E Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I, Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, Franks, Paul W, Koivula, Robert W, Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N, White, Tom, Adamski, Jerzy, Bell, Jimmy D, Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T, Forgie, Ian M, Frost, Gary, Hansen, Torben, Hansen, Tue H, Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J, Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M, Teare, Harriet J A, Thomas, E Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I, Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, and Franks, Paul W
- Abstract
AIMS/HYPOTHESIS: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435).METHODS: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively.RESULTS: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle.CONCLUSIONS/INTERPRETATION: These analyses partially
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- 2020
25. Association of Established Blood Pressure Loci With 10-Year Change in Blood Pressure and Their Ability to Predict Incident Hypertension
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Poveda, Alaitz, Atabaki-Pasdar, Naeimeh, Ahmad, Shafqat, Hallmans, Göran, Renström, Frida, Franks, Paul W., Poveda, Alaitz, Atabaki-Pasdar, Naeimeh, Ahmad, Shafqat, Hallmans, Göran, Renström, Frida, and Franks, Paul W.
- Abstract
Background: Genome‐wide association studies have identified >1000 genetic variants cross‐sectionally associated with blood pressure variation and prevalent hypertension. These discoveries might aid the early identification of subpopulations at risk of developing hypertension or provide targets for drug development, amongst other applications. The aim of the present study was to analyze the association of blood pressure‐associated variants with long‐term changes (10 years) in blood pressure and also to assess their ability to predict hypertension incidence compared with traditional risk variables in a Swedish population. Methods and Results: We constructed 6 genetic risk scores (GRSs) by summing the dosage of the effect allele at each locus of genetic variants previously associated with blood pressure traits (systolic blood pressure GRS (GRSSBP): 554 variants; diastolic blood pressure GRS (GRSDBP): 481 variants; mean arterial pressure GRS (GRSMAP): 20 variants; pulse pressure GRS (GRSPP): 478 variants; hypertension GRS (GRSHTN): 22 variants; combined GRS (GRScomb): 1152 variants). Each GRS was longitudinally associated with its corresponding blood pressure trait, with estimated effects per GRS SD unit of 0.50 to 1.21 mm Hg for quantitative traits and odds ratios (ORs) of 1.10 to 1.35 for hypertension incidence traits. The GRScomb was also significantly associated with hypertension incidence defined according to European guidelines (OR, 1.22 per SD; 95% CI, 1.10‒1.35) but not US guidelines (OR, 1.11 per SD; 95% CI, 0.99‒1.25) while controlling for traditional risk factors. The addition of GRScomb to a model containing traditional risk factors only marginally improved discrimination (Δarea under the ROC curve = 0.001–0.002). Conclusions: GRSs based on discovered blood pressure‐associated variants are associated with long‐term changes in blood pressure traits and hypertension incidence, but the inclusion of genetic factors in a model composed of conventional hyperten
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- 2020
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26. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study
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Koivula, Robert W., Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N., White, Tom, Adamski, Jerzy, Bell, Jimmy D., Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T., Forgie, Ian M., Frost, Gary, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J., Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M., Teare, Harriet J.A., Thomas, E. Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I., Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, Franks, Paul W., Koivula, Robert W., Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N., White, Tom, Adamski, Jerzy, Bell, Jimmy D., Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T., Forgie, Ian M., Frost, Gary, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J., Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M., Teare, Harriet J.A., Thomas, E. Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I., Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, and Franks, Paul W.
- Abstract
Aims/hypothesis: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435). Methods: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively. Results: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle. Conclusions/interpretation: These analyses partially suppo
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- 2020
27. Glucose-dependent insulinotropic peptide and risk of cardiovascular events and mortality:a prospective study
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Jujic, Amra, Atabaki-Pasdar, Naeimeh, Nilsson, Peter M., Almgren, Peter, Hakaste, Liisa, Tuomi, Tiinamaija, Berglund, Lisa M., Franks, Paul W., Holst, Jens J., Prasad, Rashmi B., Torekov, Signe S., Ravassa, Susana, Diez, Javier, Persson, Margaretha, Melander, Olle, Gomez, Maria F., Groop, Leif, Ahlqvist, Emma, Magnusson, Martin, Jujic, Amra, Atabaki-Pasdar, Naeimeh, Nilsson, Peter M., Almgren, Peter, Hakaste, Liisa, Tuomi, Tiinamaija, Berglund, Lisa M., Franks, Paul W., Holst, Jens J., Prasad, Rashmi B., Torekov, Signe S., Ravassa, Susana, Diez, Javier, Persson, Margaretha, Melander, Olle, Gomez, Maria F., Groop, Leif, Ahlqvist, Emma, and Magnusson, Martin
- Abstract
Aims/hypothesis Evidence that glucose-dependent insulinotropic peptide (GIP) and/or the GIP receptor (GIPR) are involved in cardiovascular biology is emerging. We hypothesised that GIP has untoward effects on cardiovascular biology, in contrast to glucagon-like peptide 1 (GLP-1), and therefore investigated the effects of GIP and GLP-1 concentrations on cardiovascular disease (CVD) and mortality risk. Methods GIP concentrations were successfully measured during OGTTs in two independent populations (Malmo Diet Cancer-Cardiovascular Cohort [MDC-CC] and Prevalence, Prediction and Prevention of Diabetes in Botnia [PPP-Botnia]) in a total of 8044 subjects. GLP-1 (n = 3625) was measured in MDC-CC. The incidence of CVD and mortality was assessed via national/regional registers or questionnaires. Further, a two-sample Mendelian randomisation (2SMR) analysis between the GIP pathway and outcomes (coronary artery disease [CAD] and myocardial infarction) was carried out using a GIP-associated genetic variant, rs1800437, as instrumental variable. An additional reverse 2SMR was performed with CAD as exposure variable and GIP as outcome variable, with the instrumental variables constructed from 114 known genetic risk variants for CAD. Results In meta-analyses, higher fasting levels of GIP were associated with risk of higher total mortality (HR[95% CI] = 1.22 [1.11, 1.35]; p = 4.5 x 10(-5)) and death from CVD (HR[95% CI] 1.30 [1.11, 1.52]; p = 0.001). In accordance, 2SMR analysis revealed that increasing GIP concentrations were associated with CAD and myocardial infarction, and an additional reverse 2SMR revealed no significant effect of CAD on GIP levels, thus confirming a possible effect solely of GIP on CAD. Conclusions/interpretation In two prospective, community-based studies, elevated levels of GIP were associated with greater risk of all-cause and cardiovascular mortality within 5-9 years of follow-up, whereas GLP-1 levels were not associated with excess risk. Further stud
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- 2020
28. Glucose-Dependent Insulinotropic Peptide in the High-Normal Range Is Associated With Increased Carotid Intima-Media Thickness
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Jujić, Amra, primary, Nilsson, Peter M., additional, Atabaki-Pasdar, Naeimeh, additional, Dieden, Anna, additional, Tuomi, Tiinamaija, additional, Franks, Paul W., additional, Holst, Jens Juul, additional, Torekov, Signe Sørensen, additional, Ravassa, Susana, additional, Díez, Javier, additional, Persson, Margaretha, additional, Ahlqvist, Emma, additional, Melander, Olle, additional, Gomez, Maria F., additional, Groop, Leif, additional, and Magnusson, Martin, additional
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- 2020
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29. Association of Established Blood Pressure Loci With 10‐Year Change in Blood Pressure and Their Ability to Predict Incident Hypertension
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Poveda, Alaitz, primary, Atabaki‐Pasdar, Naeimeh, additional, Ahmad, Shafqat, additional, Hallmans, Göran, additional, Renström, Frida, additional, and Franks, Paul W., additional
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- 2020
- Full Text
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30. Predicting and elucidating the etiology of fatty liver disease using a machine learning-based approach: an IMI DIRECT study
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Atabaki-Pasdar, Naeimeh, primary, Ohlsson, Mattias, additional, Viñuela, Ana, additional, Frau, Francesca, additional, Pomares-Millan, Hugo, additional, Haid, Mark, additional, Jones, Angus G, additional, Thomas, E Louise, additional, Koivula, Robert W, additional, Kurbasic, Azra, additional, Mutie, Pascal M, additional, Fitipaldi, Hugo, additional, Fernandez, Juan, additional, Dawed, Adem Y, additional, Giordano, Giuseppe N, additional, Forgie, Ian M, additional, McDonald, Timothy J, additional, Rutters, Femke, additional, Cederberg, Henna, additional, Chabanova, Elizaveta, additional, Dale, Matilda, additional, De Masi, Federico, additional, Thomas, Cecilia Engel, additional, Allin, Kristine H, additional, Hansen, Tue H, additional, Heggie, Alison, additional, Hong, Mun-Gwan, additional, Elders, Petra JM, additional, Kennedy, Gwen, additional, Kokkola, Tarja, additional, Pedersen, Helle Krogh, additional, Mahajan, Anubha, additional, McEvoy, Donna, additional, Pattou, Francois, additional, Raverdy, Violeta, additional, Häussler, Ragna S, additional, Sharma, Sapna, additional, Thomsen, Henrik S, additional, Vangipurapu, Jagadish, additional, Vestergaard, Henrik, additional, ‘t Hart, Leen M, additional, Adamski, Jerzy, additional, Musholt, Petra B, additional, Brage, Soren, additional, Brunak, Søren, additional, Dermitzakis, Emmanouil, additional, Frost, Gary, additional, Hansen, Torben, additional, Laakso, Markku, additional, Pedersen, Oluf, additional, Ridderstråle, Martin, additional, Ruetten, Hartmut, additional, Hattersley, Andrew T, additional, Walker, Mark, additional, Beulens, Joline WJ, additional, Mari, Andrea, additional, Schwenk, Jochen M, additional, Gupta, Ramneek, additional, McCarthy, Mark I, additional, Pearson, Ewan R, additional, Bell, Jimmy D, additional, Pavo, Imre, additional, and Franks, Paul W, additional
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- 2020
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31. Genetic studies of abdominal MRI data identify genes regulating hepcidin as major determinants of liver iron concentration
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Wilman, Henry R., primary, Parisinos, Constantinos A., additional, Atabaki-Pasdar, Naeimeh, additional, Kelly, Matt, additional, Thomas, E. Louise, additional, Neubauer, Stefan, additional, Mahajan, Anubha, additional, Hingorani, Aroon D., additional, Patel, Riyaz S., additional, Hemingway, Harry, additional, Franks, Paul W., additional, Bell, Jimmy D., additional, Banerjee, Rajarshi, additional, Yaghootkar, Hanieh, additional, Jennison, Christopher, additional, Ehrhardt, Beate, additional, Baum, Patrick, additional, Schoelsch, Corinna, additional, Freijer, Jan, additional, Grempler, Rolf, additional, Graefe-Mody, Ulrike, additional, Hennige, Anita, additional, Dings, Christiane, additional, Lehr, Thorsten, additional, Scherer, Nina, additional, Sihinecich, Iryna, additional, Pattou, Francois, additional, Raverdi, Violeta, additional, Caiazzo, Robert, additional, Torres, Fanelly, additional, Verkindt, Helene, additional, Mari, Andrea, additional, Tura, Andrea, additional, Giorgino, Toni, additional, Bizzotto, Roberto, additional, Froguel, Philippe, additional, Bonneford, Amelie, additional, Canouil, Mickael, additional, Dhennin, Veronique, additional, Brorsson, Caroline, additional, Brunak, Soren, additional, De Masi, Federico, additional, Gudmundsdóttir, Valborg, additional, Pedersen, Helle, additional, Banasik, Karina, additional, Thomas, Cecilia, additional, Sackett, Peter, additional, Staerfeldt, Hans-Henrik, additional, Lundgaard, Agnete, additional, Nilsson, Birgitte, additional, Nielsen, Agnes, additional, Mazzoni, Gianluca, additional, Karaderi, Tugce, additional, Rasmussen, Simon, additional, Johansen, Joachim, additional, Allesøe, Rosa, additional, Fritsche, Andreas, additional, Thorand, Barbara, additional, Adamski, Jurek, additional, Grallert, Harald, additional, Haid, Mark, additional, Sharma, Sapna, additional, Troll, Martina, additional, Adam, Jonathan, additional, Ferrer, Jorge, additional, Eriksen, Heather, additional, Frost, Gary, additional, Haussler, Ragna, additional, Hong, Mun-gwan, additional, Schwenk, Jochen, additional, Uhlen, Mathias, additional, Nicolay, Claudia, additional, Pavo, Imre, additional, Steckel-Hamann, Birgit, additional, Thomas, Melissa, additional, Adragni, Kofi, additional, Wu, Han, additional, Hart, Leen't, additional, Roderick, Slieker, additional, van Leeuwen, Nienke, additional, Dekkers, Koen, additional, Frau, Francesca, additional, Gassenhuber, Johann, additional, Jablonka, Bernd, additional, Musholt, Petra, additional, Ruetten, Hartmut, additional, Tillner, Joachim, additional, Baltauss, Tania, additional, Bernard Poenaru, Oana, additional, de Preville, Nathalie, additional, Rodriquez, Marianne, additional, Arumugam, Manimozhiyan, additional, Allin, Kristine, additional, Engelbrechtsen, Line, additional, Hansen, Torben, additional, Hansen, Tue, additional, Forman, Annemette, additional, Jonsson, Anna, additional, Pedersen, Oluf, additional, Dutta, Avirup, additional, Vogt, Josef, additional, Vestergaard, Henrik, additional, Laakso, Markku, additional, Kokkola, Tarja, additional, Kuulasmaa, Teemu, additional, Franks, Paul, additional, Giordano, Nick, additional, Pomares-Millan, Hugo, additional, Fitipaldi, Hugo, additional, Mutie, Pascal, additional, Klintenberg, Maria, additional, Bergstrom, Margit, additional, Groop, Leif, additional, Ridderstrale, Martin, additional, Atabaki Pasdar, Naeimeh, additional, Deshmukh, Harshal, additional, Heggie, Alison, additional, Wake, Dianne, additional, McEvoy, Donna, additional, McVittie, Ian, additional, Walker, Mark, additional, Hattersley, Andrew, additional, Hill, Anita, additional, Jones, Angus, additional, McDonald, Timothy, additional, Perry, Mandy, additional, Nice, Rachel, additional, Hudson, Michelle, additional, Thorne, Claire, additional, Dermitzakis, Emmanouil, additional, Viñuela, Ana, additional, Cabrelli, Louise, additional, Loftus, Heather, additional, Dawed, Adem, additional, Donnelly, Louise, additional, Forgie, Ian, additional, Pearson, Ewan, additional, Palmer, Colin, additional, Brown, Andrew, additional, Koivula, Robert, additional, Wesolowska-Andersen, Agata, additional, Abdalla, Moustafa, additional, McRobert, Nicky, additional, Fernandez, Juan, additional, Jiao, Yunlong, additional, Robertson, Neil, additional, Gough, Stephen, additional, Kaye, Jane, additional, Mourby, Miranda, additional, McCarthy, Mark, additional, Shah, Nisha, additional, Teare, Harriet, additional, Holl, Reinhard, additional, Koopman, Anitra, additional, Rutters, Femke, additional, Beulens, Joline, additional, Groeneveld, Lenka, additional, Bell, Jimmy, additional, Thomas, Louise, additional, and Whitcher, Brandon, additional
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- 2019
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32. Genetic studies of abdominal MRI data identify genes regulating hepcidin as major determinants of liver iron concentration
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Wilman, Henry R., Parisinos, Constantinos A., Atabaki-Pasdar, Naeimeh, Kelly, Matt, Thomas, E. Louise, Neubauer, Stefan, Jennison, Christopher, Ehrhardt, Beate, Baum, Patrick, Schoelsch, Corinna, Freijer, Jan, Grempler, Rolf, Graefe-Mody, Ulrike, Hennige, Anita, Dings, Christiane, Lehr, Thorsten, Scherer, Nina, Sihinecich, Iryna, Pattou, Francois, Raverdi, Violeta, Caiazzo, Robert, Torres, Fanelly, Verkindt, Helene, Mari, Andrea, Tura, Andrea, Giorgino, Toni, Bizzotto, Roberto, Froguel, Philippe, Bonneford, Amelie, Canouil, Mickael, Dhennin, Veronique, Brorsson, Caroline, Brunak, Soren, De Masi, Federico, Gudmundsdóttir, Valborg, Pedersen, Helle, Banasik, Karina, Thomas, Cecilia, Sackett, Peter, Staerfeldt, Hans Henrik, Lundgaard, Agnete, Nilsson, Birgitte, Nielsen, Agnes, Mazzoni, Gianluca, Karaderi, Tugce, Rasmussen, Simon, Johansen, Joachim, Allesøe, Rosa, Fritsche, Andreas, Thorand, Barbara, Adamski, Jurek, Grallert, Harald, Haid, Mark, Sharma, Sapna, Troll, Martina, Adam, Jonathan, Ferrer, Jorge, Eriksen, Heather, Frost, Gary, Haussler, Ragna, Hong, Mun gwan, Schwenk, Jochen, Uhlen, Mathias, Nicolay, Claudia, Pavo, Imre, Steckel-Hamann, Birgit, Thomas, Melissa, Adragni, Kofi, Wu, Han, Hart, Leen't, Roderick, Slieker, van Leeuwen, Nienke, Dekkers, Koen, Frau, Francesca, Gassenhuber, Johann, Jablonka, Bernd, Musholt, Petra, Ruetten, Hartmut, Tillner, Joachim, Baltauss, Tania, Bernard Poenaru, Oana, de Preville, Nathalie, Rodriquez, Marianne, Arumugam, Manimozhiyan, Allin, Kristine, Engelbrechtsen, Line, Hansen, Torben, Hansen, Tue, Forman, Annemette, Jonsson, Anna, Pedersen, Oluf, Dutta, Avirup, Vogt, Josef, Vestergaard, Henrik, Laakso, Markku, Kokkola, Tarja, Kuulasmaa, Teemu, Franks, Paul, Giordano, Nick, and Pomares-Millan, Hugo
- Subjects
Genome-wide association study ,Magnetic resonance imaging ,Metabolism ,Iron ,Genetics ,Metabolic syndrome - Abstract
Background & Aims: Excess liver iron content is common and is linked to the risk of hepatic and extrahepatic diseases. We aimed to identify genetic variants influencing liver iron content and use genetics to understand its link to other traits and diseases. Methods: First, we performed a genome-wide association study (GWAS) in 8,289 individuals from UK Biobank, whose liver iron level had been quantified by magnetic resonance imaging, before validating our findings in an independent cohort (n = 1,513 from IMI DIRECT). Second, we used Mendelian randomisation to test the causal effects of 25 predominantly metabolic traits on liver iron content. Third, we tested phenome-wide associations between liver iron variants and 770 traits and disease outcomes. Results: We identified 3 independent genetic variants (rs1800562 [C282Y] and rs1799945 [H63D] in HFE and rs855791 [V736A] in TMPRSS6) associated with liver iron content that reached the GWAS significance threshold (p
- Published
- 2019
33. Genome-Wide and Abdominal MRI Data Provide Evidence That a Genetically Determined Favorable Adiposity Phenotype Is Characterized by Lower Ectopic Liver Fat and Lower Risk of Type 2 Diabetes, Heart Disease, and Hypertension
- Author
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Ji, Yingjie, Yiorkas, Andrianos M., Frau, Francesca, Mook-Kanamori, Dennis, Staiger, Harald, Thomas, E. Louise, Atabaki-Pasdar, Naeimeh, Campbell, Archie, Tyrrell, Jessica, Jones, Samuel E., Beaumont, Robin N., Wood, Andrew R., Tuke, Marcus A., Ruth, Katherine S., Mahajan, Anubha, Murray, Anna, Freathy, Rachel M., Weedon, Michael N., Hattersley, Andrew T., Hayward, Caroline, Machann, Juergen, Haering, Hans-Ulrich, Franks, Paul W., de Mutsert, Renee, Pearson, Ewan, Stefan, Norbert, Frayling, Timothy M., Allebrandt, Karla V., Bell, Jimmy D., Blakemore, Alexandra I., Yaghootkar, Hanieh, Ji, Yingjie, Yiorkas, Andrianos M., Frau, Francesca, Mook-Kanamori, Dennis, Staiger, Harald, Thomas, E. Louise, Atabaki-Pasdar, Naeimeh, Campbell, Archie, Tyrrell, Jessica, Jones, Samuel E., Beaumont, Robin N., Wood, Andrew R., Tuke, Marcus A., Ruth, Katherine S., Mahajan, Anubha, Murray, Anna, Freathy, Rachel M., Weedon, Michael N., Hattersley, Andrew T., Hayward, Caroline, Machann, Juergen, Haering, Hans-Ulrich, Franks, Paul W., de Mutsert, Renee, Pearson, Ewan, Stefan, Norbert, Frayling, Timothy M., Allebrandt, Karla V., Bell, Jimmy D., Blakemore, Alexandra I., and Yaghootkar, Hanieh
- Abstract
Recent genetic studies have identified alleles associated with opposite effects on adiposity and risk of type 2 diabetes. We aimed to identify more of these variants and test the hypothesis that such favorable adiposity alleles are associated with higher subcutaneous fat and lower ectopic fat. We combined MRI data with genome-wide association studies of body fat percentage (%) and metabolic traits. We report 14 alleles, including 7 newly characterized alleles, associated with higher adiposity but a favorable metabolic profile. Consistent with previous studies, individuals carrying more favorable adiposity alleles had higher body fat % and higher BMI but lower risk of type 2 diabetes, heart disease, and hypertension. These individuals also had higher subcutaneous fat but lower liver fat and a lower visceral-to-subcutaneous adipose tissue ratio. Individual alleles associated with higher body fat % but lower liver fat and lower risk of type 2 diabetes included those in PPARG, GRB14, and IRS1, whereas the allele in ANKRD55 was paradoxically associated with higher visceral fat but lower risk of type 2 diabetes. Most identified favorable adiposity alleles are associated with higher subcutaneous and lower liver fat, a mechanism consistent with the beneficial effects of storing excess triglycerides in metabolically low-risk depots.
- Published
- 2019
- Full Text
- View/download PDF
34. Genome-Wide and Abdominal MRI Data Provide Evidence That a Genetically Determined Favorable Adiposity Phenotype Is Characterized by Lower Ectopic Liver Fat and Lower Risk of Type 2 Diabetes, Heart Disease, and Hypertension
- Author
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Ji, Yingjie, primary, Yiorkas, Andrianos M., additional, Frau, Francesca, additional, Mook-Kanamori, Dennis, additional, Staiger, Harald, additional, Thomas, E. Louise, additional, Atabaki-Pasdar, Naeimeh, additional, Campbell, Archie, additional, Tyrrell, Jessica, additional, Jones, Samuel E., additional, Beaumont, Robin N., additional, Wood, Andrew R., additional, Tuke, Marcus A., additional, Ruth, Katherine S., additional, Mahajan, Anubha, additional, Murray, Anna, additional, Freathy, Rachel M., additional, Weedon, Michael N., additional, Hattersley, Andrew T., additional, Hayward, Caroline, additional, Machann, Jürgen, additional, Häring, Hans-Ulrich, additional, Franks, Paul, additional, de Mutsert, Renée, additional, Pearson, Ewan, additional, Stefan, Norbert, additional, Frayling, Timothy M., additional, Allebrandt, Karla V., additional, Bell, Jimmy D., additional, Blakemore, Alexandra I., additional, and Yaghootkar, Hanieh, additional
- Published
- 2018
- Full Text
- View/download PDF
35. Statistical power considerations in genotype-based recall randomized controlled trials
- Author
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Atabaki-Pasdar, Naeimeh, primary, Ohlsson, Mattias, additional, Shungin, Dmitry, additional, Kurbasic, Azra, additional, Ingelsson, Erik, additional, Pearson, Ewan R., additional, Ali, Ashfaq, additional, and Franks, Paul W., additional
- Published
- 2016
- Full Text
- View/download PDF
36. Genome-Wide and Abdominal MRI Data Provide Evidence That a Genetically Determined Favorable Adiposity Phenotype Is Characterized by Lower Ectopic Liver Fat and Lower Risk of Type 2 Diabetes, Heart Disease, and Hypertension.
- Author
-
Yingjie Ji, Yiorkas, Andrianos M., Frau, Francesca, Mook-Kanamori, Dennis, Staiger, Harald, Thomas, E.Louise, Atabaki-Pasdar, Naeimeh, Campbell, Archie, Tyrrell, Jessica, Jones, Samuel E., Beaumont, Robin N., Wood, Andrew R., Tuke, Marcus A., Ruth, Katherine S., Mahajan, Anubha, Murray, Anna, Freathy, Rachel M., Weedon, Michael N., Hattersley, Andrew T., and Hayward, Caroline
- Subjects
TYPE 2 diabetes ,MAGNETIC resonance imaging ,FATTY liver ,HEART disease risk factors ,DIABETES risk factors ,HYPERTENSION ,ADIPOSE tissues ,ADIPOSE tissue physiology ,COMPARATIVE studies ,HEART diseases ,RESEARCH methodology ,MEDICAL cooperation ,OBESITY ,RESEARCH ,RESEARCH funding ,EVALUATION research ,WAIST-hip ratio ,SEQUENCE analysis - Abstract
Recent genetic studies have identified alleles associated with opposite effects on adiposity and risk of type 2 diabetes. We aimed to identify more of these variants and test the hypothesis that such favorable adiposity alleles are associated with higher subcutaneous fat and lower ectopic fat. We combined MRI data with genome-wide association studies of body fat percentage (%) and metabolic traits. We report 14 alleles, including 7 newly characterized alleles, associated with higher adiposity but a favorable metabolic profile. Consistent with previous studies, individuals carrying more favorable adiposity alleles had higher body fat % and higher BMI but lower risk of type 2 diabetes, heart disease, and hypertension. These individuals also had higher subcutaneous fat but lower liver fat and a lower visceral-to-subcutaneous adipose tissue ratio. Individual alleles associated with higher body fat % but lower liver fat and lower risk of type 2 diabetes included those in PPARG, GRB14, and IRS1, whereas the allele in ANKRD55 was paradoxically associated with higher visceral fat but lower risk of type 2 diabetes. Most identified favorable adiposity alleles are associated with higher subcutaneous and lower liver fat, a mechanism consistent with the beneficial effects of storing excess triglycerides in metabolically low-risk depots. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
37. Statistical power considerations in genotype-based recall randomized controlled trials
- Author
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Atabaki-Pasdar, Naeimeh, Ohlsson, Mattias, Shungin, Dmitry, Kurbasic, Azra, Ingelsson, Erik, Pearson, Ewan R., Ali, Ashfaq, Franks, Paul W., Atabaki-Pasdar, Naeimeh, Ohlsson, Mattias, Shungin, Dmitry, Kurbasic, Azra, Ingelsson, Erik, Pearson, Ewan R., Ali, Ashfaq, and Franks, Paul W.
- Abstract
Randomized controlled trials (RCT) are often underpowered for validating gene-treatment interactions. Using published data from the Diabetes Prevention Program (DPP), we examined power in conventional and genotype-based recall (GBR) trials. We calculated sample size and statistical power for genemetformin interactions (vs. placebo) using incidence rates, gene-drug interaction effect estimates and allele frequencies reported in the DPP for the rs8065082 SLC47A1 variant, a metformin transported encoding locus. We then calculated statistical power for interactions between genetic risk scores (GRS), metformin treatment and intensive lifestyle intervention (ILI) given a range of sampling frames, clinical trial sample sizes, interaction effect estimates, and allele frequencies; outcomes were type 2 diabetes incidence (time-to-event) and change in small LDL particles (continuous outcome). Thereafter, we compared two recruitment frameworks: GBR (participants recruited from the extremes of a GRS distribution) and conventional sampling (participants recruited without explicit emphasis on genetic characteristics). We further examined the influence of outcome measurement error on statistical power. Under most simulated scenarios, GBR trials have substantially higher power to observe gene-drug and gene-lifestyle interactions than same-sized conventional RCTs. GBR trials are becoming popular for validation of gene-treatment interactions; our analyses illustrate the strengths and weaknesses of this design.
- Published
- 2016
- Full Text
- View/download PDF
38. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study
- Author
-
Koivula, Robert W, Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N, White, Tom, Adamski, Jerzy, Bell, Jimmy D, Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T, Forgie, Ian M, Frost, Gary, Hansen, Torben, Hansen, Tue H, Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J, Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M, Teare, Harriet JA, Thomas, E Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I, Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, Franks, Paul W, and IMI DIRECT Consortium
- Subjects
Blood Glucose ,Male ,Denmark ,Glycemic Control ,Ectopic fat ,Cohort Studies ,Glycaemic control ,Homeostasis ,Humans ,Exercise ,Finland ,Aged ,Netherlands ,Sweden ,Physical activity ,Beta cell function ,Type 2 diabetes ,Glucose Tolerance Test ,Middle Aged ,Insulin sensitivity ,3. Good health ,Cross-Sectional Studies ,Diabetes Mellitus, Type 2 ,Structural equation modelling ,Female ,Insulin Resistance ,Energy Metabolism ,Prediabetes - Abstract
AIMS/HYPOTHESIS: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435). METHODS: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively. RESULTS: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle. CONCLUSIONS/INTERPRETATION: These analyses partially support the mechanisms proposed in the twin-cycle model and highlight mechanistic pathways through which insulin sensitivity and liver fat mediate the association between physical activity and glycaemic control.
39. Predicting and elucidating the etiology of fatty liver disease: A machine learning modeling and validation study in the IMI DIRECT cohorts
- Author
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Atabaki-Pasdar, Naeimeh, Ohlsson, Mattias, Viñuela, Ana, Frau, Francesca, Pomares-Millan, Hugo, Haid, Mark, Jones, Angus G, Thomas, E Louise, Koivula, Robert W, Kurbasic, Azra, Mutie, Pascal M, Fitipaldi, Hugo, Fernandez, Juan, Dawed, Adem Y, Giordano, Giuseppe N, Forgie, Ian M, McDonald, Timothy J, Rutters, Femke, Cederberg, Henna, Chabanova, Elizaveta, Dale, Matilda, Masi, Federico De, Thomas, Cecilia Engel, Allin, Kristine H, Hansen, Tue H, Heggie, Alison, Hong, Mun-Gwan, Elders, Petra JM, Kennedy, Gwen, Kokkola, Tarja, Pedersen, Helle Krogh, Mahajan, Anubha, McEvoy, Donna, Pattou, Francois, Raverdy, Violeta, Häussler, Ragna S, Sharma, Sapna, Thomsen, Henrik S, Vangipurapu, Jagadish, Vestergaard, Henrik, 'T Hart, Leen M, Adamski, Jerzy, Musholt, Petra B, Brage, Soren, Brunak, Søren, Dermitzakis, Emmanouil, Frost, Gary, Hansen, Torben, Laakso, Markku, Pedersen, Oluf, Ridderstråle, Martin, Ruetten, Hartmut, Hattersley, Andrew T, Walker, Mark, Beulens, Joline WJ, Mari, Andrea, Schwenk, Jochen M, Gupta, Ramneek, McCarthy, Mark I, Pearson, Ewan R, Bell, Jimmy D, Pavo, Imre, and Franks, Paul W
- Subjects
Diabetes Complications ,Fatty Liver ,Machine Learning ,Male ,Models, Statistical ,Humans ,Reproducibility of Results ,Female ,Prospective Studies ,Middle Aged ,Risk Assessment ,3. Good health - Abstract
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is highly prevalent and causes serious health complications in individuals with and without type 2 diabetes (T2D). Early diagnosis of NAFLD is important, as this can help prevent irreversible damage to the liver and, ultimately, hepatocellular carcinomas. We sought to expand etiological understanding and develop a diagnostic tool for NAFLD using machine learning. METHODS AND FINDINGS: We utilized the baseline data from IMI DIRECT, a multicenter prospective cohort study of 3,029 European-ancestry adults recently diagnosed with T2D (n = 795) or at high risk of developing the disease (n = 2,234). Multi-omics (genetic, transcriptomic, proteomic, and metabolomic) and clinical (liver enzymes and other serological biomarkers, anthropometry, measures of beta-cell function, insulin sensitivity, and lifestyle) data comprised the key input variables. The models were trained on MRI-image-derived liver fat content (
40. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study
- Author
-
Koivula, Robert W., Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N., White, Tom, Adamski, Jerzy, Bell, Jimmy D., Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T., Forgie, Ian M., Frost, Gary, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J., Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M., Teare, Harriet J. A., Thomas, E. Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I., Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, and Franks, Paul W.
- Subjects
Physical activity ,Structural equation modelling ,Glycaemic control ,Beta cell function ,Type 2 diabetes ,16. Peace & justice ,Insulin sensitivity ,Prediabetes ,Article ,Ectopic fat ,3. Good health - Abstract
Aims/hypothesis: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435). Methods: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively. Results: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle. Conclusions/interpretation: These analyses partially support the mechanisms proposed in the twin-cycle model and highlight mechanistic pathways through which insulin sensitivity and liver fat mediate the association between physical activity and glycaemic control.
41. Predicting and elucidating the etiology of fatty liver disease: A machine learning modeling and validation study in the IMI DIRECT cohorts
- Author
-
Atabaki-Pasdar, Naeimeh, Ohlsson, Mattias, Viñuela, Ana, Frau, Francesca, Pomares-Millan, Hugo, Haid, Mark, Jones, Angus G., Thomas, E. Louise, Koivula, Robert W., Kurbasic, Azra, Mutie, Pascal M., Fitipaldi, Hugo, Fernandez, Juan, Dawed, Adem Y., Giordano, Giuseppe N., Forgie, Ian M., McDonald, Timothy J., Rutters, Femke, Cederberg, Henna, Chabanova, Elizaveta, Dale, Matilda, Masi, Federico De, Thomas, Cecilia Engel, Allin, Kristine H., Hansen, Tue H., Heggie, Alison, Hong, Mun-Gwan, Elders, Petra J. M., Kennedy, Gwen, Kokkola, Tarja, Pedersen, Helle Krogh, Mahajan, Anubha, McEvoy, Donna, Pattou, Francois, Raverdy, Violeta, Häussler, Ragna S., Sharma, Sapna, Thomsen, Henrik S., Vangipurapu, Jagadish, Vestergaard, Henrik, ‘T Hart, Leen M., Adamski, Jerzy, Musholt, Petra B., Brage, Soren, Brunak, Søren, Dermitzakis, Emmanouil, Frost, Gary, Hansen, Torben, Laakso, Markku, Pedersen, Oluf, Ridderstråle, Martin, Ruetten, Hartmut, Hattersley, Andrew T., Walker, Mark, Beulens, Joline W. J., Mari, Andrea, Schwenk, Jochen M., Gupta, Ramneek, McCarthy, Mark I., Pearson, Ewan R., Bell, Jimmy D., Pavo, Imre, and Franks, Paul W.
- Subjects
Medicine and health sciences ,Research and analysis methods ,FOS: Computer and information sciences ,Computer and information sciences ,Biology and life sciences ,3. Good health ,Research Article - Abstract
Funder: Henning och Johan Throne-Holsts, Funder: Hans Werthén, Funder: Swedish Foundation for Strategic Research, Funder: NIHR clinical senior lecturer fellowship, Funder: Wellcome Trust Senior Investigator, Funder: NIHR Exeter Clinical Research Facility, Funder: Science for Life Laboratory (Plasma Profiling Facility), Funder: Knut and Alice Wallenberg Foundation (Human Protein Atlas), Funder: Erling-Persson Foundation (KTH Centre for Precision Medicine), Background: Non-alcoholic fatty liver disease (NAFLD) is highly prevalent and causes serious health complications in individuals with and without type 2 diabetes (T2D). Early diagnosis of NAFLD is important, as this can help prevent irreversible damage to the liver and, ultimately, hepatocellular carcinomas. We sought to expand etiological understanding and develop a diagnostic tool for NAFLD using machine learning. Methods and findings: We utilized the baseline data from IMI DIRECT, a multicenter prospective cohort study of 3,029 European-ancestry adults recently diagnosed with T2D (n = 795) or at high risk of developing the disease (n = 2,234). Multi-omics (genetic, transcriptomic, proteomic, and metabolomic) and clinical (liver enzymes and other serological biomarkers, anthropometry, measures of beta-cell function, insulin sensitivity, and lifestyle) data comprised the key input variables. The models were trained on MRI-image-derived liver fat content (
42. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study
- Author
-
Koivula, Robert W., Atabaki-Pasdar, Naeimeh, Giordano, Giuseppe N., White, Tom, Adamski, Jerzy, Bell, Jimmy D., Beulens, Joline, Brage, Søren, Brunak, Søren, De Masi, Federico, Dermitzakis, Emmanouil T., Forgie, Ian M., Frost, Gary, Hansen, Torben, Hansen, Tue H., Hattersley, Andrew, Kokkola, Tarja, Kurbasic, Azra, Laakso, Markku, Mari, Andrea, McDonald, Timothy J., Pedersen, Oluf, Rutters, Femke, Schwenk, Jochen M., Teare, Harriet J. A., Thomas, E. Louise, Vinuela, Ana, Mahajan, Anubha, McCarthy, Mark I., Ruetten, Hartmut, Walker, Mark, Pearson, Ewan, Pavo, Imre, and Franks, Paul W.
- Subjects
Physical activity ,Structural equation modelling ,Glycaemic control ,Beta cell function ,Type 2 diabetes ,Insulin sensitivity ,Prediabetes ,Article ,Ectopic fat ,3. Good health - Abstract
Aims/hypothesis: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435). Methods: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively. Results: The TC and TC-PA models showed better fit than null models (TC: χ2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle. Conclusions/interpretation: These analyses partially support the mechanisms proposed in the twin-cycle model and highlight mechanistic pathways through which insulin sensitivity and liver fat mediate the association between physical activity and glycaemic control.
43. Correction to: The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study.
- Author
-
Koivula RW, Atabaki-Pasdar N, Giordano GN, White T, Adamski J, Bell JD, Beulens J, Brage S, Brunak S, De Masi F, Dermitzakis ET, Forgie IM, Frost G, Hansen T, Hansen TH, Hattersley A, Kokkola T, Kurbasic A, Laakso M, Mari A, McDonald TJ, Pedersen O, Rutters F, Schwenk JM, Teare HJA, Thomas EL, Vinuela A, Mahajan A, McCarthy MI, Ruetten H, Walker M, Pearson E, Pavo I, and Franks PW
- Abstract
Unfortunately, 'Present address' was omitted from one of the addresses provided for Mark I. McCarthy (#26).
- Published
- 2021
- Full Text
- View/download PDF
44. Glucose-Dependent Insulinotropic Peptide in the High-Normal Range Is Associated With Increased Carotid Intima-Media Thickness.
- Author
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Jujić A, Nilsson PM, Atabaki-Pasdar N, Dieden A, Tuomi T, Franks PW, Holst JJ, Torekov SS, Ravassa S, Díez J, Persson M, Ahlqvist E, Melander O, Gomez MF, Groop L, and Magnusson M
- Subjects
- Aged, Blood Glucose, Cohort Studies, Female, Humans, Male, Reference Values, Carotid Intima-Media Thickness, Gastric Inhibitory Polypeptide
- Abstract
Objective: While existing evidence supports beneficial cardiovascular effects of glucagon-like peptide 1 (GLP-1), emerging studies suggest that glucose-dependent insulinotropic peptide (GIP) and/or signaling via the GIP receptor may have untoward cardiovascular effects. Indeed, recent studies show that fasting physiological GIP levels are associated with total mortality and cardiovascular mortality, and it was suggested that GIP plays a role in pathogenesis of coronary artery disease. We investigated the associations between fasting and postchallenge GIP and GLP-1 concentrations and subclinical atherosclerosis as measured by mean intima-media thickness in the common carotid artery (IMT
mean CCA) and maximal intima-media thickness in the carotid bifurcation (IMTmax Bulb)., Research Design and Methods: Participants at reexamination within the Malmö Diet and Cancer-Cardiovascular Cohort study ( n = 3,734, mean age 72.5 years, 59.3% women, 10.8% subjects with diabetes, fasting GIP available for 3,342 subjects, fasting GLP-1 available for 3,299 subjects) underwent oral glucose tolerance testing and carotid ultrasound., Results: In linear regression analyses, each 1-SD increment of fasting GIP was associated with increased (per mm) IMTmean CCA (β = 0.010, P = 0.010) and IMTmax Bulb (β = 0.014; P = 0.040) in models adjusted for known risk factors and glucose metabolism. In contrast, each 1-SD increment of fasting GLP-1 was associated with decreased IMTmax Bulb (per mm, β = -0.016, P = 0.014). These associations remained significant when subjects with diabetes were excluded from analyses., Conclusions: In a Swedish elderly population, physiologically elevated levels of fasting GIP are associated with increased IMTmean CCA, while GLP-1 is associated with decreased IMTmax Bulb, further emphasizing diverging cardiovascular effects of these two incretin hormones., (© 2020 by the American Diabetes Association.)- Published
- 2021
- Full Text
- View/download PDF
45. The role of physical activity in metabolic homeostasis before and after the onset of type 2 diabetes: an IMI DIRECT study.
- Author
-
Koivula RW, Atabaki-Pasdar N, Giordano GN, White T, Adamski J, Bell JD, Beulens J, Brage S, Brunak S, De Masi F, Dermitzakis ET, Forgie IM, Frost G, Hansen T, Hansen TH, Hattersley A, Kokkola T, Kurbasic A, Laakso M, Mari A, McDonald TJ, Pedersen O, Rutters F, Schwenk JM, Teare HJA, Thomas EL, Vinuela A, Mahajan A, McCarthy MI, Ruetten H, Walker M, Pearson E, Pavo I, and Franks PW
- Subjects
- Aged, Blood Glucose metabolism, Cohort Studies, Cross-Sectional Studies, Denmark epidemiology, Diabetes Mellitus, Type 2 blood, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 therapy, Female, Finland epidemiology, Glucose Tolerance Test, Glycemic Control, Humans, Insulin Resistance, Male, Middle Aged, Netherlands epidemiology, Sweden epidemiology, Diabetes Mellitus, Type 2 metabolism, Energy Metabolism physiology, Exercise physiology, Homeostasis physiology
- Abstract
Aims/hypothesis: It is well established that physical activity, abdominal ectopic fat and glycaemic regulation are related but the underlying structure of these relationships is unclear. The previously proposed twin-cycle hypothesis (TC) provides a mechanistic basis for impairment in glycaemic control through the interactions of substrate availability, substrate metabolism and abdominal ectopic fat accumulation. Here, we hypothesise that the effect of physical activity in glucose regulation is mediated by the twin-cycle. We aimed to examine this notion in the Innovative Medicines Initiative Diabetes Research on Patient Stratification (IMI DIRECT) Consortium cohorts comprised of participants with normal or impaired glucose regulation (cohort 1: N ≤ 920) or with recently diagnosed type 2 diabetes (cohort 2: N ≤ 435)., Methods: We defined a structural equation model that describes the TC and fitted this within the IMI DIRECT dataset. A second model, twin-cycle plus physical activity (TC-PA), to assess the extent to which the effects of physical activity in glycaemic regulation are mediated by components in the twin-cycle, was also fitted. Beta cell function, insulin sensitivity and glycaemic control were modelled from frequently sampled 75 g OGTTs (fsOGTTs) and mixed-meal tolerance tests (MMTTs) in participants without and with diabetes, respectively. Abdominal fat distribution was assessed using MRI, and physical activity through wrist-worn triaxial accelerometry. Results are presented as standardised beta coefficients, SE and p values, respectively., Results: The TC and TC-PA models showed better fit than null models (TC: χ
2 = 242, p = 0.004 and χ2 = 63, p = 0.001 in cohort 1 and 2, respectively; TC-PA: χ2 = 180, p = 0.041 and χ2 = 60, p = 0.008 in cohort 1 and 2, respectively). The association of physical activity with glycaemic control was primarily mediated by variables in the liver fat cycle., Conclusions/interpretation: These analyses partially support the mechanisms proposed in the twin-cycle model and highlight mechanistic pathways through which insulin sensitivity and liver fat mediate the association between physical activity and glycaemic control.- Published
- 2020
- Full Text
- View/download PDF
46. Genome-Wide and Abdominal MRI Data Provide Evidence That a Genetically Determined Favorable Adiposity Phenotype Is Characterized by Lower Ectopic Liver Fat and Lower Risk of Type 2 Diabetes, Heart Disease, and Hypertension.
- Author
-
Ji Y, Yiorkas AM, Frau F, Mook-Kanamori D, Staiger H, Thomas EL, Atabaki-Pasdar N, Campbell A, Tyrrell J, Jones SE, Beaumont RN, Wood AR, Tuke MA, Ruth KS, Mahajan A, Murray A, Freathy RM, Weedon MN, Hattersley AT, Hayward C, Machann J, Häring HU, Franks P, de Mutsert R, Pearson E, Stefan N, Frayling TM, Allebrandt KV, Bell JD, Blakemore AI, and Yaghootkar H
- Subjects
- Adiposity genetics, Adiposity physiology, Adult, Aged, Diabetes Mellitus, Type 2 physiopathology, Female, Genome-Wide Association Study, Heart Diseases physiopathology, Humans, Hypertension diagnostic imaging, Hypertension genetics, Hypertension physiopathology, Intra-Abdominal Fat metabolism, Male, Middle Aged, Obesity diagnostic imaging, Obesity genetics, Obesity physiopathology, Waist-Hip Ratio, Diabetes Mellitus, Type 2 diagnostic imaging, Diabetes Mellitus, Type 2 genetics, Heart Diseases diagnostic imaging, Heart Diseases genetics, Magnetic Resonance Imaging methods
- Abstract
Recent genetic studies have identified alleles associated with opposite effects on adiposity and risk of type 2 diabetes. We aimed to identify more of these variants and test the hypothesis that such favorable adiposity alleles are associated with higher subcutaneous fat and lower ectopic fat. We combined MRI data with genome-wide association studies of body fat percentage (%) and metabolic traits. We report 14 alleles, including 7 newly characterized alleles, associated with higher adiposity but a favorable metabolic profile. Consistent with previous studies, individuals carrying more favorable adiposity alleles had higher body fat % and higher BMI but lower risk of type 2 diabetes, heart disease, and hypertension. These individuals also had higher subcutaneous fat but lower liver fat and a lower visceral-to-subcutaneous adipose tissue ratio. Individual alleles associated with higher body fat % but lower liver fat and lower risk of type 2 diabetes included those in PPARG , GRB14 , and IRS1 , whereas the allele in ANKRD55 was paradoxically associated with higher visceral fat but lower risk of type 2 diabetes. Most identified favorable adiposity alleles are associated with higher subcutaneous and lower liver fat, a mechanism consistent with the beneficial effects of storing excess triglycerides in metabolically low-risk depots., (© 2018 by the American Diabetes Association.)
- Published
- 2019
- Full Text
- View/download PDF
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