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Kanders SH, Pisanu C, Bandstein M, Jonsson J, Castelao E, Pistis G, Gholam-Rezaee M, Eap CB, Preisig M, Schiöth HB, Mwinyi J. A pharmacogenetic risk score for the evaluation of major depression severity under treatment with antidepressants. Drug Dev Res 2019; 81:102-113. [PMID: 31617956 PMCID: PMC7028038 DOI: 10.1002/ddr.21609] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 12/28/2022]
Abstract
The severity of symptoms as well as efficacy of antidepressants in major depressive disorder (MDD) is modified by single nucleotide polymorphisms (SNPs) in different genes, which may contribute in an additive or synergistic fashion. We aimed to investigate depression severity in participants with MDD under treatment with antidepressants in relation to the combinatory effect of selected genetic variants combined using a genetic risk score (GRS). The sample included 150 MDD patients on regular AD therapy from the population‐based Swiss PsyCoLaus cohort. We investigated 44 SNPs previously associated with antidepressant response by ranking them with regard to their association to the Center for Epidemiologic Studies Short Depression Scale (CES‐D) score using random forest. The three top scoring SNPs (rs12248560, rs878567, rs17710780) were subsequently combined into an unweighted GRS, which was included in linear and logistic regression models using the CES‐D score, occurrence of a major depressive episode (MDE) during follow‐up and regular antidepressant treatment during the 6 months preceding follow‐up assessment as outcomes. The GRS was associated with MDE occurrence (p = .02) and ln CES‐D score (p = .001). The HTR1A rs878567 variant was associated with ln CES‐D after adjustment for demographic and clinical variables [p = .02, lower scores for minor allele (G) carriers]. Additionally, rs12248560 (CYP2C19) CC homozygotes showed a six‐fold higher likelihood of regular AD therapy at follow‐up compared to minor allele homozygotes [TT; ultrarapid metabolizers (p = .03)]. Our study suggests that the cumulative consideration of pharmacogenetic risk variants more reliably reflects the impact of the genetic background on depression severity than individual SNPs.
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Affiliation(s)
- Sofia H Kanders
- Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Claudia Pisanu
- Department of Neuroscience, Uppsala University, Uppsala, Sweden.,Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | | | - Jörgen Jonsson
- Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Enrique Castelao
- Department of Psychiatry, University of Lausanne, Lausanne, Switzerland
| | - Giorgio Pistis
- Department of Psychiatry, University of Lausanne, Lausanne, Switzerland
| | | | - Chin B Eap
- Department of Psychiatry, University of Lausanne, Lausanne, Switzerland.,Department of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Switzerland
| | - Martin Preisig
- Department of Psychiatry, University of Lausanne, Lausanne, Switzerland
| | - Helgi B Schiöth
- Department of Neuroscience, Uppsala University, Uppsala, Sweden.,Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Jessica Mwinyi
- Department of Neuroscience, Uppsala University, Uppsala, Sweden
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2
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Boström AE, Chatzittofis A, Ciuculete DM, Flanagan JN, Krattinger R, Bandstein M, Mwinyi J, Kullak-Ublick GA, Öberg KG, Arver S, Schiöth HB, Jokinen J. Hypermethylation-associated downregulation of microRNA-4456 in hypersexual disorder with putative influence on oxytocin signalling: A DNA methylation analysis of miRNA genes. Epigenetics 2019; 15:145-160. [PMID: 31542994 PMCID: PMC6961682 DOI: 10.1080/15592294.2019.1656157] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hypersexual disorder (HD) was proposed as a diagnosis in the DSM-5 and the classification ‘Compulsive Sexual Behavior Disorder’ is now presented as an impulse-control disorder in ICD-11. HD incorporates several pathophysiological mechanisms; including impulsivity, compulsivity, sexual desire dysregulation and sexual addiction. No previous study investigated HD in a methylation analysis limited to microRNA (miRNA) associated CpG-sites. The genome wide methylation pattern was measured in whole blood from 60 subjects with HD and 33 healthy volunteers using the Illumina EPIC BeadChip. 8,852 miRNA associated CpG-sites were investigated in multiple linear regression analyses of methylation M-values to a binary independent variable of disease state (HD or healthy volunteer), adjusting for optimally determined covariates. Expression levels of candidate miRNAs were investigated in the same individuals for differential expression analysis. Candidate methylation loci were further studied for an association with alcohol dependence in an independent cohort of 107 subjects. Two CpG-sites were borderline significant in HD – cg18222192 (MIR708)(p < 10E-05,pFDR = 5.81E-02) and cg01299774 (MIR4456)(p < 10E-06, pFDR = 5.81E-02). MIR4456 was significantly lower expressed in HD in both univariate (p < 0.0001) and multivariate (p < 0.05) analyses. Cg01299774 methylation levels were inversely correlated with expression levels of MIR4456 (p < 0.01) and were also differentially methylated in alcohol dependence (p = 0.026). Gene target prediction and pathway analysis revealed that MIR4456 putatively targets genes preferentially expressed in brain and that are involved in major neuronal molecular mechanisms thought to be relevant for HD, e.g., the oxytocin signalling pathway. In summary, our study implicates a potential contribution of MIR4456 in the pathophysiology of HD by putatively influencing oxytocin signalling.
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Affiliation(s)
- Adrian E Boström
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | | | - Diana-Maria Ciuculete
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - John N Flanagan
- Andrology/Sexual Medicine Group (ANOVA), Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Regina Krattinger
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zürich, Switzerland
| | - Marcus Bandstein
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - Jessica Mwinyi
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - Gerd A Kullak-Ublick
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zürich, Switzerland
| | - Katarina Görts Öberg
- Andrology/Sexual Medicine Group (ANOVA), Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Stefan Arver
- Andrology/Sexual Medicine Group (ANOVA), Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Helgi B Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden.,Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Jussi Jokinen
- Department of Clinical Sciences/Psychiatry, Umeå University, Umeå, Sweden.,Department of Clinical Neuroscience/Psychiatry, Karolinska Institutet, Stockholm, Sweden
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3
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Bandstein M, Voisin S, Nilsson EK, Schultes B, Ernst B, Thurnheer M, Benedict C, Mwinyi J, Schiöth HB. A Genetic Risk Score Is Associated with Weight Loss Following Roux-en Y Gastric Bypass Surgery. Obes Surg 2017; 26:2183-2189. [PMID: 26832135 PMCID: PMC4985537 DOI: 10.1007/s11695-016-2072-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Background Currently, Roux-en Y gastric bypass (RYGB) is the most efficient therapy for severe obesity. Weight loss after surgery is, however, highly variable and genetically influenced. Genome-wide association studies have identified several single nucleotide polymorphisms (SNP) associated with body mass index (BMI) and waist-hip ratio (WHR). We aimed to identify two genetic risk scores (GRS) composed of weighted BMI and WHR-associated SNPs to estimate their impact on excess BMI loss (EBMIL) after RYGB surgery. Methods Two hundred and thirty-eight obese patients (BMI 45.1 ± 6.2 kg/m2, 74 % women), who underwent RYGB, were genotyped for 35 BMI and WHR-associated SNPs and were followed up after 2 years. SNPs with high impact on post-surgical weight loss were filtered out using a random forest model. The filtered SNPs were combined into a GRS and analyzed in a linear regression model. Results An up to 11 % lower EBMIL with higher risk score was estimated for two GRS models (P = 0.026 resp. P = 0.021) composed of seven BMI-associated SNPs (closest genes: MC4R, TMEM160, PTBP2, NUDT3, TFAP2B, ZNF608, MAP2K5, GNPDA2, and MTCH2) and of three WHR-associated SNPs (closest genes: HOXC13, LYPLAL1, and DNM3-PIGC). Patients within the lowest GRS quartile had higher EBMIL compared to patients within the other three quartiles in both models. Conclusions We identified two GRSs composed of BMI and WHR-associated SNPs with significant impact on weight loss after RYGB surgery using random forest analysis as a SNP selection tool. The GRS may be useful to pre-surgically evaluate the risks for patients undergoing RYGB surgery. Electronic supplementary material The online version of this article (doi:10.1007/s11695-016-2072-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marcus Bandstein
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden.
| | - Sarah Voisin
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden
| | - Emil K Nilsson
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden
| | - Bernd Schultes
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center, St. Gallen, Switzerland
| | - Barbara Ernst
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center, St. Gallen, Switzerland
| | - Martin Thurnheer
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center, St. Gallen, Switzerland
| | - Christian Benedict
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden
| | - Jessica Mwinyi
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden
| | - Helgi B Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Box 593, 751 24, Uppsala, Sweden
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Ciuculete DM, Bandstein M, Benedict C, Waeber G, Vollenweider P, Lind L, Schiöth HB, Mwinyi J. A genetic risk score is significantly associated with statin therapy response in the elderly population. Clin Genet 2016; 91:379-385. [PMID: 27943270 DOI: 10.1111/cge.12890] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/06/2016] [Accepted: 10/10/2016] [Indexed: 11/27/2022]
Abstract
The ability of statins to strongly reduce low-density lipoprotein cholesterol (LDL-C) varies interindividually and is partially influenced by genetic variants. Based on a comprehensive analysis of 23 single nucleotide polymorphisms (SNPs) known to be associated with pharmacokinetics and dynamics of statins, we developed a genetic risk score to study its impact on the therapy outcome in elderly individuals under at least 5 years statin therapy. The study was performed in a population-based cohort of 1016 elderly individuals, which comprised 168 statin users investigated at age 75 and 80. Using random forest models, the major variants influencing LDL-C levels were summarized in a weighted GRS (wGRS). The wGRS was tested with lipid and glucose outcomes and validated in an independent population-based cohort including 221 statin users. Four SNPs within the APOE cluster (rs7412, rs4420638), ABCC2 (rs2002042) and CELSR/SORT1/PSRC1 (rs646776), displayed a major impact on statin efficacy. The wGRS was significantly associated with lower LDL-C at age 75 and 80. This association was replicated displaying similar results. GRS analysis is a powerful tool to evaluate the additive effects of genetic variants on statin response and to estimate the magnitude of LDL-C reduction to a considerable extent in the older population.
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Affiliation(s)
- D M Ciuculete
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - M Bandstein
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - C Benedict
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - G Waeber
- Department of Internal Medicine, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - P Vollenweider
- Department of Internal Medicine, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - L Lind
- Department of Medicine, Uppsala University Hospital, Uppsala, Sweden
| | - H B Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
| | - J Mwinyi
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden
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5
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Bandstein M, Mwinyi J, Ernst B, Thurnheer M, Schultes B, Schiöth HB. A genetic variant in proximity to the gene LYPLAL1 is associated with lower hunger feelings and increased weight loss following Roux-en-Y gastric bypass surgery. Scand J Gastroenterol 2016; 51:1050-5. [PMID: 27181159 PMCID: PMC4926774 DOI: 10.3109/00365521.2016.1166519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Bariatric surgery is the most efficient treatment of severe obesity. We investigated to what extent BMI- or waist-hip ratio (WHR)-related genetic variants are associated with excess BMI loss (EBMIL) two years after Roux-en-Y gastric bypass (RYGB) surgery, and elucidated the affected biological pathways. METHODS Two-hundred fifty-one obese patients (age: 43 ± 10.7, preoperative BMI: 45.1 ± 6.1 kg/m(2), 186 women) underwent RYGB surgery and were followed up after two years with regard to BMI. Patients were genotyped for 32 single-nucleotide polymorphisms (SNPs) that were investigated with regard to their impact on response to RYGB and preoperatively measured Three Factor Eating Questionnaire (TFEQ) scores. RESULTS Homozygous T carriers of the SNP rs4846567 in proximity to the Lysophospholipase-like 1 (LYPLAL1) gene showed a 7% higher EBMIL compared to wild-type and heterozygous carriers (p = 0.031). TT-allele carriers showed furthermore lower scores for Hunger (74%, p < 0.001), lower Disinhibition (53%, p < 0.001), and higher Cognitive restraint (21%, p = 0.017) than GG/GT carriers in the TFEQ. Patients within the lowest quartile of Hunger scores had a 32% greater EBMIL compared to patients in the highest quartile (p < 0.001). CONCLUSION The LYPLAL1 genotype is associated with differences in eating behavior and loss of extensive body weight following RYGB surgery. Genotyping and the use of eating behavior-related questionnaires may help to estimate the RYGB-associated therapy success.
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Affiliation(s)
- Marcus Bandstein
- Department of Neuroscience, Functional Pharmacology, Uppsala University,
Uppsala,
Sweden,CONTACTMarcus Bandstein
Department of Neuroscience, Uppsala University, Box 593,
751 24Uppsala,
Sweden
| | - Jessica Mwinyi
- Department of Neuroscience, Functional Pharmacology, Uppsala University,
Uppsala,
Sweden
| | - Barbara Ernst
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center,
St. Gallen,
Switzerland
| | - Martin Thurnheer
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center,
St. Gallen,
Switzerland
| | - Bernd Schultes
- Interdisciplinary Obesity Center, eSwiss Medical & Surgical Center,
St. Gallen,
Switzerland
| | - Helgi B. Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University,
Uppsala,
Sweden
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6
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Rask-Andersen M, Bringeland N, Nilsson EK, Bandstein M, Olaya Búcaro M, Vogel H, Schürmann A, Hogenkamp PS, Benedict C, Schiöth HB. Postprandial alterations in whole-blood DNA methylation are mediated by changes in white blood cell composition. Am J Clin Nutr 2016; 104:518-25. [PMID: 27385611 DOI: 10.3945/ajcn.115.122366] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 05/27/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND DNA methylation is an essential nuclear process associated with genomic functions such as transcription factor binding and the regulation of gene expression. DNA methylation patterns can also serve as potential biomarkers for disease progression and response to therapy. However, the full dynamics of DNA methylation across daily physiologic events have not been fully elucidated. OBJECTIVE We sought to study how ingesting a standardized meal acutely affects peripheral blood DNA methylation. DESIGN We performed an observational study in healthy men (n = 26) on DNA methylation and gene expression in whole blood before and 160 min after the ingestion of a standardized meal. Cytosine-phosphate-guanine (CpG) methylation was assayed on the HumanMethylation450k microarray, and gene expression was measured with the Human Gene 2.1 ST Array. RESULTS Differential methylation after food intake was detected in 13% of the analyzed probes (63,207 CpG probes) at a 5% false discovery rate (FDR). This effect was driven by changes in leukocyte fractions as estimated from comparisons against methylation datasets generated from sorted leukocytes. When methylation values were adjusted for estimated leukocyte fractions, 541 probes were observed to be altered in the postprandial state (5% FDR). CONCLUSIONS Apparent alterations in DNA methylation 160 min after meal ingestion mainly reflect changes in the estimated leukocyte population in whole blood. These results have major methodologic implications for genome-wide methylation studies because they highlight the strong underlying effects of changes in leukocyte fractions on CpG methylation patterns as well as the potential importance of meal-standardized sampling procedures for future investigations when alterations in white blood cell fractions are unavailable. This trial was registered at clinicaltrials.gov as LSF008786.
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Affiliation(s)
- Mathias Rask-Andersen
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden;
| | - Nathalie Bringeland
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Emil K Nilsson
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Marcus Bandstein
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Marcela Olaya Búcaro
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Heike Vogel
- Department of Experimental Diabetology, German Institute of Human Nutrition, Nuthetal, Germany; and German Center of Diabetes Research, Neuherberg, Germany
| | - Annette Schürmann
- Department of Experimental Diabetology, German Institute of Human Nutrition, Nuthetal, Germany; and German Center of Diabetes Research, Neuherberg, Germany
| | - Pleunie S Hogenkamp
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Christian Benedict
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
| | - Helgi B Schiöth
- Department of Neuroscience, Division of Functional Pharmacology, Biomedical Center, Uppsala University, Uppsala, Sweden
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7
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Wiemerslage L, Nilsson EK, Solstrand Dahlberg L, Ence-Eriksson F, Castillo S, Larsen AL, Bylund SBA, Hogenkamp PS, Olivo G, Bandstein M, Titova OE, Larsson EM, Benedict C, Brooks SJ, Schiöth HB. An obesity-associated risk allele within the FTO gene affects human brain activity for areas important for emotion, impulse control and reward in response to food images. Eur J Neurosci 2016; 43:1173-80. [PMID: 26797854 DOI: 10.1111/ejn.13177] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 12/30/2015] [Accepted: 01/13/2016] [Indexed: 12/24/2022]
Abstract
Understanding how genetics influences obesity, brain activity and eating behaviour will add important insight for developing strategies for weight-loss treatment, as obesity may stem from different causes and as individual feeding behaviour may depend on genetic differences. To this end, we examined how an obesity risk allele for the FTO gene affects brain activity in response to food images of different caloric content via functional magnetic resonance imaging (fMRI). Thirty participants homozygous for the rs9939609 single nucleotide polymorphism were shown images of low- or high-calorie food while brain activity was measured via fMRI. In a whole-brain analysis, we found that people with the FTO risk allele genotype (AA) had increased activity compared with the non-risk (TT) genotype in the posterior cingulate, cuneus, precuneus and putamen. Moreover, higher body mass index in the AA genotype was associated with reduced activity to food images in areas important for emotion (cingulate cortex), but also in areas important for impulse control (frontal gyri and lentiform nucleus). Lastly, we corroborate our findings with behavioural scales for the behavioural inhibition and activation systems. Our results suggest that the two genotypes are associated with differential neural processing of food images, which may influence weight status through diminished impulse control and reward processing.
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Affiliation(s)
- Lyle Wiemerslage
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Emil K Nilsson
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Linda Solstrand Dahlberg
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Fia Ence-Eriksson
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Sandra Castillo
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Anna L Larsen
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Simon B A Bylund
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Pleunie S Hogenkamp
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Gaia Olivo
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Marcus Bandstein
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Olga E Titova
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Elna-Marie Larsson
- Section of Neuroradiology, Department of Radiology, Uppsala University, Uppsala, Sweden
| | - Christian Benedict
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
| | - Samantha J Brooks
- Department of Psychiatry, University of Cape Town, Old Groote Schuur Hospital, Cape Town, South Africa
| | - Helgi B Schiöth
- Department of Neuroscience, Functional Pharmacology, Biomedicinska Centrum (BMC), Uppsala University, Husargatan 3, Box 593, 751 24, Uppsala, Sweden
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8
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Olivo G, Wiemerslage L, Nilsson EK, Solstrand Dahlberg L, Larsen AL, Olaya Búcaro M, Gustafsson VP, Titova OE, Bandstein M, Larsson EM, Benedict C, Brooks SJ, Schiöth HB. Resting-State Brain and the FTO Obesity Risk Allele: Default Mode, Sensorimotor, and Salience Network Connectivity Underlying Different Somatosensory Integration and Reward Processing between Genotypes. Front Hum Neurosci 2016; 10:52. [PMID: 26924971 PMCID: PMC4756146 DOI: 10.3389/fnhum.2016.00052] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 02/01/2016] [Indexed: 11/17/2022] Open
Abstract
Single-nucleotide polymorphisms (SNPs) of the fat mass and obesity associated (FTO) gene are linked to obesity, but how these SNPs influence resting-state neural activation is unknown. Few brain-imaging studies have investigated the influence of obesity-related SNPs on neural activity, and no study has investigated resting-state connectivity patterns. We tested connectivity within three, main resting-state networks: default mode (DMN), sensorimotor (SMN), and salience network (SN) in 30 male participants, grouped based on genotype for the rs9939609 FTO SNP, as well as punishment and reward sensitivity measured by the Behavioral Inhibition (BIS) and Behavioral Activation System (BAS) questionnaires. Because obesity is associated with anomalies in both systems, we calculated a BIS/BAS ratio (BBr) accounting for features of both scores. A prominence of BIS over BAS (higher BBr) resulted in increased connectivity in frontal and paralimbic regions. These alterations were more evident in the obesity-associated AA genotype, where a high BBr was also associated with increased SN connectivity in dopaminergic circuitries, and in a subnetwork involved in somatosensory integration regarding food. Participants with AA genotype and high BBr, compared to corresponding participants in the TT genotype, also showed greater DMN connectivity in regions involved in the processing of food cues, and in the SMN for regions involved in visceral perception and reward-based learning. These findings suggest that neural connectivity patterns influence the sensitivity toward punishment and reward more closely in the AA carriers, predisposing them to developing obesity. Our work explains a complex interaction between genetics, neural patterns, and behavioral measures in determining the risk for obesity and may help develop individually-tailored strategies for obesity prevention.
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Affiliation(s)
- Gaia Olivo
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Lyle Wiemerslage
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Emil K Nilsson
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | | | - Anna L Larsen
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Marcela Olaya Búcaro
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Veronica P Gustafsson
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Olga E Titova
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Marcus Bandstein
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Elna-Marie Larsson
- Section of Neuroradiology, Department of Radiology, Uppsala University Uppsala, Sweden
| | - Christian Benedict
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
| | - Samantha J Brooks
- Department of Psychiatry, University of Cape Town Cape Town, South Africa
| | - Helgi B Schiöth
- Functional Pharmacology, Department of Neuroscience, Uppsala University Uppsala, Sweden
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