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2. Alterations in Glucagon Levels and the Glucagon-to-Insulin Ratio in Response to High Dietary Fat or Protein Intake in Healthy Lean Adult Twins: A Post Hoc Analysis †.

Author

Schuppelius, Bettina, Schüler, Rita, Pivovarova-Ramich, Olga, Hornemann, Silke, Busjahn, Andreas, Machann, Jürgen, Kruse, Michael, Park, Soyoung Q., Kabisch, Stefan, Csanalosi, Marta, Ost, Anne-Cathrin, and Pfeiffer, Andreas F. H.

Abstract

Background/Objectives: Emerging data support evidence of the essential role of glucagon for lipid metabolism. However, data on the role of dietary fat intake for glucagon secretion is limited. This analysis investigated whether altering nutritional fat intake affects glucagon levels in healthy subjects. Methods: A total of 92 twins (age: 31 ± 14 years, BMI: 23 ± 3 kg/m2) consumed two 6-week diets: first a low-fat, high-carbohydrate diet (LFD) followed by an isocaloric high-fat, low-carbohydrate diet (HFD). In total, 24 twins (age: 39 ± 15 years, BMI: 24 ± 2 kg/m2) continued with a high-protein diet (HPD). Clinical investigations were performed after 6 weeks of the LFD, after 1 and 6 weeks of the HFD and after 6 weeks of the HPD. Results: The LFD caused a significant decrease in fasting glucagon (−27%, p < 0.001) compared to baseline. After 6 weeks of the HFD, glucagon increased (117%, p < 0.001 vs. LFD), while free fatty acids decreased. Six weeks of the HPD further increased glucagon levels (72%, p = 0.502 vs. HFD), although fasting amino acid levels remained constant. Fasting insulin and HOMA-IR moderately increased after one week of the HFD, while six weeks of the HPD significantly decreased both. The fasting glucagon-to-insulin ratio decreased during the LFD (p < 0.001) but increased after the HFD (p < 0.001) and even further increased after the HPD (p = 0.018). Liver fat, triglycerides and blood glucose did not increase during the HFD. The heritability of glucagon levels was 45% with the LFD. Conclusions: An HFD increases glucagon levels and the glucagon-to-insulin ratio under isocaloric conditions compared to an LFD in healthy lean subjects. This rise in glucagon may represent a metabolic response to prevent hepatic steatosis, as glucagon increases have been previously shown to induce hepatic fat oxidation. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Yokoyama, Yoshie, Hur, Yoon-Mi, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Honda, Chika, Inui, Fujio, Iwatani, Yoshinori, Watanabe, Mikio, Tomizawa, Rie, Pietiläinen, Kirsi H, Rissanen, Aila, Siribaddana, Sisira H, Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Piirtola, Maarit, Aaltonen, Sari, Öncel, Sevgi Y, Aliev, Fazil, Rebato, Esther, Hjelmborg, Jacob B, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Silberg, Judy L, Eaves, Lindon J, Cutler, Tessa L, Ordoñana, Juan R, Sánchez-Romera, Juan F, Colodro-Conde, Lucia, Song, Yun-Mi, Yang, Sarah, Lee, Kayoung, Franz, Carol E, Kremen, William S, Lyons, Michael J, Busjahn, Andreas, Nelson, Tracy L, Whitfield, Keith E, Kandler, Christian, Jang, Kerry L, Gatz, Margaret, Butler, David A, Stazi, Maria A, Fagnani, Corrado, D’Ippolito, Cristina, Duncan, Glen E, Buchwald, Dedra, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Jeong, Hoe-Uk, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik KE, Pedersen, Nancy L, Dahl Aslan, Anna K, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, Tynelius, Per, Baker, Laura A, Tuvblad, Catherine, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Spector, Timothy D, Mangino, Massimo, Lachance, Genevieve, Burt, S Alexandra, Klump, Kelly L, Harris, Jennifer R, Brandt, Ingunn, Nilsen, Thomas S, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Corley, Robin P, Huibregtse, Brooke M, Bartels, Meike, van Beijsterveldt, Catharina EM, Willemsen, Gonneke, Goldberg, Jack H, Rasmussen, Finn, Tarnoki, Adam D, Tarnoki, David L, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth JF, Hopper, John L, Sung, Joohon, Maes, Hermine H, Turkheimer, Eric, Boomsma, Dorret I, Sørensen, Thorkild IA, and Kaprio, Jaakko

Published
2017
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8. The Relationship between Patient Self-Reported, Pre-Morbid Physical Activity and Clinical Outcomes of Inpatient Treatment in Youth with Anorexia Nervosa: A Pilot Study.

Author

Pech, Martina, Correll, Christoph U., Schmidt, Janine, Zeeck, Almut, Hofmann, Tobias, Busjahn, Andreas, and Haas, Verena

Abstract

Links between premorbid physical activity (PA) and disease onset/course in patients with anorexia nervosa (AN) remain unclear. The aim was to assess self-reported PA as a predictor of change in percent median BMI (%mBMI) and length of hospital stay (LOS). Five PA domains were assessed via semi-structured interview in adolescents with AN at hospitalization: premorbid PA in school grades 1-6 (PA1-6); PA before AN onset (PA-pre) and after AN onset (PA-post); new, pathological motivation for PA (PA-new); and high intensity PA (PA-high). Eating disorder psychopathology was measured via the Eating Disorder Examination Questionnaire (EDE-Q), and current PA (steps/day) with accelerometry. PA1-6 was also assessed in healthy controls (HCs). Using stepwise backward regression models, predictors of %mBMI change and LOS were examined. Compared with 22 HCs (age = 14.7 ± 1.3 years, %mBMI = 102.4 ± 12.1), 25 patients with AN (age = 15.1 ± 1.7 years, %mBMI = 74.8 ± 6.0) reported significantly higher PA1-6 (median, AN = 115 [interquartile range IQR = 75;200] min vs. HC = 68 [IQR = 29;105] min; p = 0.017). PA-post was 244 ± 323% higher than PA-pre. PA1-6 was directly associated with PA-pre (p = 0.001) but not with PA-post (p = 0.179) or change in PA-pre to PA-post (p = 0.735). Lower %mBMI gain was predicted by lower baseline %mBMI (p = 0.001) and more PA-high (p = 0.004; r2 = 0.604). Longer LOS was predicted by higher PA-pre (p = 0.003, r2 = 0.368). Self-reported PA may identify a subgroup of youth with AN at risk of less weight gain and prolonged LOS during inpatient treatment for AN. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Blood Pressure and Angiogenic Markers in Pregnancy: Contributors to Pregnancy-Induced Hypertension and Offspring Cardiovascular Risk

Author

Birukov, Anna, Herse, Florian, Nielsen, Julie H., Kyhl, Henriette B., Golic, Michaela, Kräker, Kristin, Haase, Nadine, Busjahn, Andreas, Bruun, Signe, Jensen, Boye L., Müller, Dominik N., Jensen, Tina Kold, Christesen, Henrik T., Andersen, Marianne Skovsager, Jørgensen, Jan Stener, Dechend, Ralf, and Andersen, Louise Bjørkholt

Published
2020
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11. Genetic and environmental effects on body mass index from infancy to the onset of adulthood: an individual-based pooled analysis of 45 twin cohorts participating in the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) study1–3

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Hur, Yoon-Mi, Yokoyama, Yoshie, Honda, Chika, Hjelmborg, Jacob vB, Möller, Sören, Ooki, Syuichi, Aaltonen, Sari, Ji, Fuling, Ning, Feng, Pang, Zengchang, Rebato, Esther, Busjahn, Andreas, Kandler, Christian, Saudino, Kimberly J, Jang, Kerry L, Cozen, Wendy, Hwang, Amie E, Mack, Thomas M, Gao, Wenjing, Yu, Canqing, Li, Liming, Corley, Robin P, Huibregtse, Brooke M, Christensen, Kaare, Skytthe, Axel, Kyvik, Kirsten O, Derom, Catherine A, Vlietinck, Robert F, Loos, Ruth JF, Heikkilä, Kauko, Wardle, Jane, Llewellyn, Clare H, Fisher, Abigail, McAdams, Tom A, Eley, Thalia C, Gregory, Alice M, He, Mingguang, Ding, Xiaohu, Bjerregaard-Andersen, Morten, Beck-Nielsen, Henning, Sodemann, Morten, Tarnoki, Adam D, Tarnoki, David L, Stazi, Maria A, Fagnani, Corrado, D’Ippolito, Cristina, Knafo-Noam, Ariel, Mankuta, David, Abramson, Lior, Burt, S Alexandra, Klump, Kelly L, Silberg, Judy L, Eaves, Lindon J, Maes, Hermine H, Krueger, Robert F, McGue, Matt, Pahlen, Shandell, Gatz, Margaret, Butler, David A, Bartels, Meike, van Beijsterveldt, Toos CEM, Craig, Jeffrey M, Saffery, Richard, Freitas, Duarte L, Maia, José Antonio, Dubois, Lise, Boivin, Michel, Brendgen, Mara, Dionne, Ginette, Vitaro, Frank, Martin, Nicholas G, Medland, Sarah E, Montgomery, Grant W, Chong, Youngsook, Swan, Gary E, Krasnow, Ruth, Magnusson, Patrik KE, Pedersen, Nancy L, Tynelius, Per, Lichtenstein, Paul, Haworth, Claire MA, Plomin, Robert, Bayasgalan, Gombojav, Narandalai, Danshiitsoodol, Harden, K Paige, Tucker-Drob, Elliot M, Öncel, Sevgi Y, Aliev, Fazil, Spector, Timothy, Mangino, Massimo, Lachance, Genevieve, Baker, Laura A, Tuvblad, Catherine, Duncan, Glen E, Buchwald, Dedra, Willemsen, Gonneke, Rasmussen, Finn, Goldberg, Jack H, Sørensen, Thorkild IA, Boomsma, Dorret I, and Kaprio, Jaakko

Published
2016
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13. Comparing family‐based treatment with inpatient treatment in youth with anorexia nervosa eligible for hospitalization: A 12‐month feasibility study.

Author

Haas, Verena, Wechsung, Katja, Kaiser, Vivien, Schmidt, Janine, Raile, Klemens, Busjahn, Andreas, Le Grange, Daniel, and Correll, Christoph U.

Subjects
ANOREXIA nervosa treatment, FAMILY psychotherapy, PILOT projects, LENGTH of stay in hospitals, PROFESSIONAL practice, SUICIDE, CLINICAL trials, BURDEN of care, EVIDENCE-based medicine, MANN Whitney U Test, FISHER exact test, TREATMENT effectiveness, COMPARATIVE studies, WEIGHT gain, T-test (Statistics), PSYCHOLOGICAL tests, HOSPITAL care, RESEARCH funding, PATHOLOGICAL psychology, QUESTIONNAIRES, REPEATED measures design, DESCRIPTIVE statistics, COST effectiveness, BODY mass index, ADVERSE health care events, DATA analysis software, STATISTICAL models, OUTPATIENT services in hospitals, LONGITUDINAL method, SELF-mutilation, ADOLESCENCE
Abstract

Objective: Family‐based treatment (FBT) for youth with anorexia nervosa (AN), has not been compared to inpatient, multimodal treatment (IMT). Method: Prospective, non‐randomized pilot feasibility study of adolescents with AN receiving FBT (n = 31), and as a reference point for exploratory outcome comparisons IMT (n = 31), matched for baseline age and percent median BMI (%mBMI). Feasibility of FBT in youth fulfilling criteria for IMT was assessed via study recruitment and retention rates; acceptability via drop‐out and caregiver strain; safety via adverse events; preliminary treatment effectiveness between groups was assessed via a change in %mBMI, AN psychopathology (Eating Disorder Examination‐Questionnaire, EDE‐Q), and hospital days, over 12 months with intent‐to‐treat, mixed models repeated measures analyses covering post‐intervention usual care until 12 months. Results: Taking into account that 8 FBT patients (25.8%) crossed over to IMT due to lack of weight gain or psychiatric concerns, FBT and IMT were similarly feasible, acceptable, and safe, apart from more physical antagonism toward others in FBT (p =.010). FBT lasted longer (median [interquartile range, IQR]; 33.6 [17.4, 49.9] vs. 17.3 [14.4, 24] weeks, p <.001), but required fewer hospital days than IMT (median, [IQR], FBT = 1 [0, 16] vs. IMT = 123 [101, 180], p <.001). Baseline comorbidity‐adjusted changes over 12 months did not differ between groups in %mBMI (FBT = 12.6 ± 11.9 vs. IMT = 13.7 ± 9.1; p =.702) and EDE‐Q global score (median, [IQR]; FBT = −1.2 [−2.3, 0.2] vs. IMT = −1.3 [−2.8, −0.4]; p =.733). Discussion: Implementing FBT in this pilot study was feasible, acceptable, and safe for youth eligible for IMT according to German S3 guidelines. Non‐inferiority of FBT versus IMT requires confirmation in a sufficiently large multicenter RCT. Public Significance: This pilot study with 62 adolescent patients with anorexia nervosa demonstrated that for 2/3rd of patients eligible for a long hospitalization in the German health care system, outpatient, Family‐based treatment (FBT) was a safe and feasible treatment alternative. Over 12 months, FBT lead to similar weight gain and reduction in eating disorder cognitions as inpatient treatment with fewer hospital days. This pilot study needs to be followed up by a larger, multicenter trial. [ABSTRACT FROM AUTHOR]

Published
2024
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14. An Isocaloric High-Fat Diet Regulates Partially Genetically Determined Fatty Acid and Carbohydrate Uptake and Metabolism in Subcutaneous Adipose Tissue of Lean Adult Twins

Author

Kruse, Michael, primary, Hornemann, Silke, additional, Ost, Anne-Cathrin, additional, Frahnow, Turid, additional, Hoffmann, Daniela, additional, Busjahn, Andreas, additional, Osterhoff, Martin A., additional, Schuppelius, Bettina, additional, and Pfeiffer, Andreas F. H., additional

Published
2023
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15. Identification of peripheral vascular function measures and circulating biomarkers of mitochondrial function in patients with mitochondrial disease

Author

van Kraaij, Sebastiaan J. W., primary, Pereira, Diana R., additional, Smal, Bastiaan, additional, Summo, Luciana, additional, Konkel, Anne, additional, Lossie, Janine, additional, Busjahn, Andreas, additional, Grammatopoulos, Tom N., additional, Klaassen, Erica, additional, Fischer, Robert, additional, Schunck, Wolf‐Hagen, additional, Gal, Pim, additional, and Moerland, Matthijs, additional

Published
2023
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20. Exercise blood-drop metabolic profiling links metabolism with perceived exertion

Author

Opialla, Tobias, Gollasch, Benjamin, Kuich, Peter H. J. L., Klug, Lars, Rahn, Gabriele, Busjahn, Andreas, Spuler, Simone, Boschmann, Michael, Kirwan, Jennifer A., Luft, Friedrich C., and Kempa, Stefan

Subjects
Cancer Research, Cardiovascular and Metabolic Diseases, Technology Platforms, Function and Dysfunction of the Nervous System, Biochemistry, Genetics and Molecular Biology (miscellaneous), Molecular Biology, Biochemistry
Abstract

Background: Assessing detailed metabolism in exercising persons minute-to-minute has not been possible. We developed a “drop-of-blood” platform to fulfill that need. Our study aimed not only to demonstrate the utility of our methodology, but also to give insights into unknown mechanisms and new directions.Methods: We developed a platform, based on gas chromatography and mass spectrometry, to assess metabolism from a blood-drop. We first observed a single volunteer who ran 13 km in 61 min. We particularly monitored relative perceived exertion (RPE). We observed that 2,3-bisphosphoglycerate peaked at RPE in this subject. We next expanded these findings to women and men volunteers who performed an RPE-based exercise protocol to RPE at Fi O 2 20.9% or Fi O 2 14.5% in random order.Results: At 6 km, our subject reached his maximum relative perceived exertion (RPE); however, he continued running, felt better, and finished his run. Lactate levels had stably increased by 2 km, ketoacids increased gradually until the run’s end, while the hypoxia marker, 2,3 bisphosphoglycerate, peaked at maximum relative perceived exertion. In our normal volunteers, the changes in lactate, pyruvate, ß hydroxybutyrate and a hydroxybutyrate were not identical, but similar to our model proband runner.Conclusion: Glucose availability was not the limiting factor, as glucose availability increased towards exercise end in highly exerted subjects. Instead, the tricarboxylic acid→oxphos pathway, lactate clearance, and thus and the oxidative capacity appeared to be the defining elements in confronting maximal exertion. These ideas must be tested further in more definitive studies. Our preliminary work suggests that our single-drop methodology could be of great utility in studying exercise physiology.

Published
2022

37. Heritability of free and receptor-bound leptin in normal twins

Author

Jordan, Jens, Brabant, Georg, Brinsuk, Marina, Tank, Jens, Horn, Rudiger, Luft, Friedrich C., and Busjahn, Andreas

Subjects
Leptin -- Research, Biological sciences
Abstract

Free and receptor-bound leptin may be regulated by different mechanisms. Genes that influence the concentration of these tractions may have an important functional bearing. We determined circulating leptin receptor concentrations, bound as well as free leptin concentrations, and body composition in 24 monozygotic (MZ) and in 22 dizygotic (DZ) twin pairs. Bound leptin and leptin receptor concentrations were inversely correlated with body fat content. Free leptin concentrations were directly correlated with body fat content. The correlations in age-and sex-adjusted free leptin, bound leptin, and leptin receptor concentrations were higher between MZ twins than between DZ twins. Adjusted heritability (h2) estimates were 0.28 for free leptin, 0.73 for bound leptin, and 0.55 for leptin receptor. The genetic correlation with body fat was -0.58 for the leptin receptor, -0.20 for bound leptin, and 0.93 for free leptin. Our data are consistent with a strong genetic influence on leptin receptor and bound leptin and a weaker genetic influence on free leptin concentrations. The same genes that lower bound leptin and leptin receptor concentrations may increase fat mass or vice versa. twin study; heritability; leptin; bound leptin

Published
2005

38. Erratum

Author

Duelsner, André, Gatzke, Nora, Glaser, Johanna, Hillmeister, Philipp, Li, Meijing, Lee, Eun-Ji, Lehmann, Kerstin, Urban, Daniel, Meyborg, Heike, Stawowy, Philipp, Busjahn, Andreas, Nagorka, Stephanie, Persson, Anja, Laage, Rico, Schneider, Armin, and Buschmann, Ivo

Published
2013
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42. Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts

Author

Silventoinen, Karri, primary, Jelenkovic, Aline, additional, Sund, Reijo, additional, Latvala, Antti, additional, Honda, Chika, additional, Inui, Fujio, additional, Tomizawa, Rie, additional, Watanabe, Mikio, additional, Sakai, Norio, additional, Rebato, Esther, additional, Busjahn, Andreas, additional, Tyler, Jessica, additional, Hopper, John L., additional, Ordoñana, Juan R., additional, Sánchez-Romera, Juan F., additional, Colodro-Conde, Lucia, additional, Calais-Ferreira, Lucas, additional, Oliveira, Vinicius C., additional, Ferreira, Paulo H., additional, Medda, Emanuela, additional, Nisticò, Lorenza, additional, Toccaceli, Virgilia, additional, Derom, Catherine A., additional, Vlietinck, Robert F., additional, Loos, Ruth J. F., additional, Siribaddana, Sisira H., additional, Hotopf, Matthew, additional, Sumathipala, Athula, additional, Rijsdijk, Fruhling, additional, Duncan, Glen E., additional, Buchwald, Dedra, additional, Tynelius, Per, additional, Rasmussen, Finn, additional, Tan, Qihua, additional, Zhang, Dongfeng, additional, Pang, Zengchang, additional, Magnusson, Patrik K. E., additional, Pedersen, Nancy L., additional, Dahl Aslan, Anna K., additional, Hwang, Amie E., additional, Mack, Thomas M., additional, Krueger, Robert F., additional, McGue, Matt, additional, Pahlen, Shandell, additional, Brandt, Ingunn, additional, Nilsen, Thomas S., additional, Harris, Jennifer R., additional, Martin, Nicholas G., additional, Medland, Sarah E., additional, Montgomery, Grant W., additional, Willemsen, Gonneke, additional, Bartels, Meike, additional, van Beijsterveldt, Catharina E. M., additional, Franz, Carol E., additional, Kremen, William S., additional, Lyons, Michael J., additional, Silberg, Judy L., additional, Maes, Hermine H., additional, Kandler, Christian, additional, Nelson, Tracy L., additional, Whitfield, Keith E., additional, Corley, Robin P., additional, Huibregtse, Brooke M., additional, Gatz, Margaret, additional, Butler, David A., additional, Tarnoki, Adam D., additional, Tarnoki, David L., additional, Park, Hang A., additional, Lee, Jooyeon, additional, Lee, Soo Ji, additional, Sung, Joohon, additional, Yokoyama, Yoshie, additional, Sørensen, Thorkild I. A., additional, Boomsma, Dorret I., additional, and Kaprio, Jaakko, additional

Published
2020
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48. Endothelial-cell permeability and protein kinase C in pre-eclampsia

Author

Haller, Hermann, Hempel, Albrecht, Homuth, Volker, Mandelkow, Anja, Busjahn, Andreas, Maasch, Christian, Drab, Marek, Lindschau, Carsten, Jupner, Axel, Vetter, Klaus, Dudenhausen, Joachim, and Luft, Friedrich C.

Subjects
Preeclampsia -- Physiological aspects, Endothelium -- Physiological aspects, Protein kinases -- Physiological aspects, Cells -- Permeability
Published
1998

49. Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts

Author

Fisiología, Fisiologia, Silventoinen, Karri, Jelenkovic Moreno, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato Ochoa, Esther Matilde, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucía, Calais Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Pablo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Fisiología, Fisiologia, Silventoinen, Karri, Jelenkovic Moreno, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato Ochoa, Esther Matilde, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana Martín, Juan Ramón, Sánchez Romera, Juan Francisco, Colodro Conde, Lucía, Calais Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Pablo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, Van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural-geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a(2)=0.43; 0.41-0.44), but also environmental variation shared by co-twins was substantial (c(2)=0.31; 0.30-0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900-1949 (a(2)=0.44; 0.41-0.46) than in the later cohorts born in 1950-1989 (a(2)=0.38; 0.36-0.40), with a corresponding lower influence of common environmental factors (c(2)=0.31; 0.29-0.33 and c(2)=0.34; 0.32-0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s.

Published
2020

50. Genetic and environmental variation in educational attainment : an individual-based analysis of 28 twin cohorts

Author

Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., Kaprio, Jaakko, Silventoinen, Karri, Jelenkovic, Aline, Sund, Reijo, Latvala, Antti, Honda, Chika, Inui, Fujio, Tomizawa, Rie, Watanabe, Mikio, Sakai, Norio, Rebato, Esther, Busjahn, Andreas, Tyler, Jessica, Hopper, John L., Ordoñana, Juan R., Sánchez-Romera, Juan F., Colodro-Conde, Lucia, Calais-Ferreira, Lucas, Oliveira, Vinicius C., Ferreira, Paulo H., Medda, Emanuela, Nisticò, Lorenza, Toccaceli, Virgilia, Derom, Catherine A., Vlietinck, Robert F., Loos, Ruth J. F., Siribaddana, Sisira H., Hotopf, Matthew, Sumathipala, Athula, Rijsdijk, Fruhling, Duncan, Glen E., Buchwald, Dedra, Tynelius, Per, Rasmussen, Finn, Tan, Qihua, Zhang, Dongfeng, Pang, Zengchang, Magnusson, Patrik K. E., Pedersen, Nancy L., Dahl Aslan, Anna K., Hwang, Amie E., Mack, Thomas M., Krueger, Robert F., McGue, Matt, Pahlen, Shandell, Brandt, Ingunn, Nilsen, Thomas S., Harris, Jennifer R., Martin, Nicholas G., Medland, Sarah E., Montgomery, Grant W., Willemsen, Gonneke, Bartels, Meike, van Beijsterveldt, Catharina E. M., Franz, Carol E., Kremen, William S., Lyons, Michael J., Silberg, Judy L., Maes, Hermine H., Kandler, Christian, Nelson, Tracy L., Whitfield, Keith E., Corley, Robin P., Huibregtse, Brooke M., Gatz, Margaret, Butler, David A., Tarnoki, Adam D., Tarnoki, David L., Park, Hang A., Lee, Jooyeon, Lee, Soo Ji, Sung, Joohon, Yokoyama, Yoshie, Sørensen, Thorkild I. A., Boomsma, Dorret I., and Kaprio, Jaakko

Abstract

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural–geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a2 = 0.43; 0.41–0.44), but also environmental variation shared by co-twins was substantial (c2 = 0.31; 0.30–0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900–1949 (a2 = 0.44; 0.41–0.46) than in the later cohorts born in 1950–1989 (a2 = 0.38; 0.36–0.40), with a corresponding lower influence of common environmental factors (c2 = 0.31; 0.29–0.33 and c2 = 0.34; 0.32–0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s., CC BY 4.0

Published
2020
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