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Adults prenatally exposed to the Dutch Famine exhibit a metabolic signature associated with a broad spectrum of common diseases
BMC Medicine volume 22, Article number: 309 (2024)
Abstract
Background
Exposure to famine in the prenatal period is associated with an increased risk of metabolic disease, including obesity and type 2 diabetes. We employed nuclear magnetic resonance (NMR) metabolomic profiling to identify the metabolic changes that are associated with survival of prenatal famine exposure during the Dutch Famine at the end of World War II and subsequently assess their link to disease.
Methods
NMR metabolomics data were generated from serum in 480 individuals prenatally exposed to famine (mean 58.8 years, 0.5 SD) and 464 controls (mean 57.9 years, 5.4 SD). We tested associations of prenatal famine exposure with levels of 168 individual metabolic biomarkers and compared the metabolic biomarker signature of famine exposure with those of 154 common diseases.
Results
Prenatal famine exposure was associated with higher concentrations of branched-chain amino acids ((iso)-leucine), aromatic amino acid (tyrosine), and glucose in later life (0.2–0.3 SD, p < 3 × 10−3). The metabolic biomarker signature of prenatal famine exposure was positively correlated to that of incident type 2 diabetes from the UK Biobank (r = 0.77, p = 3 × 10−27), also when re-estimating the signature of prenatal famine exposure among individuals without diabetes (r = 0.67, p = 1 × 10−18). Remarkably, this association extended to 115 common diseases for which signatures were available (0.3 ≤ r ≤ 0.9, p < 3.2 × 10−4). Correlations among metabolic signatures of famine exposure and disease outcomes were attenuated when the famine signature was adjusted for body mass index.
Conclusions
Prenatal famine exposure is associated with a metabolic biomarker signature that strongly resembles signatures of a diverse set of diseases, an observation that can in part be attributed to a shared involvement of obesity.
Background
Metabolomics is a powerful tool for illuminating molecular phenotypes underpinning disease [1]. With nuclear magnetic resonance (NMR) approaches, metabolomics is now possible within large-scale epidemiologic studies and biobanks. Within these settings, NMR metabolomics has identified metabolic changes across a broad spectrum of diseases, revealing both common and disease-specific metabolic biomarkers [2,3,4,5]. Less is known about how the metabolome may reflect or mediate effects of prenatal exposure on disease pathogenesis. Here, we investigate the long-term metabolomic sequelae associated with gestational exposure to famine, an established risk factor for the development of metabolic disease [6, 7].
The Dutch Hunger Winter of 1944–1945, a 6-month famine at the end of World War II, provides a unique setting to study the long-term effects of an adverse prenatal environment [6, 8, 9]. Previous studies revealed that prenatal famine exposure is associated with an increased risk in unfavorable metabolic phenotypes in adulthood including increased fasting glucose and triglyceride levels, obesity, and type 2 diabetes [10,11,12,13,14,15,16,17]. These associations have also been observed for other historical famines [6]. To date, a comprehensive view of metabolic changes linked to prenatal famine exposure is lacking. Therefore, in this study, we seek to define the metabolomic differences associated with prenatal famine exposure and how these metabolic biomarkers are linked to diseases. We expect to identify changes in metabolic biomarkers that reflect metabolic diseases known to be associated with prenatal famine exposure, while the metabolomics approach also provides the opportunity to uncover metabolic biomarkers related to diseases not previously reported in the context of prenatal famine exposure.
We profiled samples for 944 participants from the Dutch Hunger Winter Families Study using nuclear magnetic resonance (NMR) metabolomics. First, we compared individuals exposed to prenatal famine with unexposed control participants on 168 different serum metabolic biomarkers to define the metabolic differences associated with prenatal famine exposure. To exclude that effects were partially driven by genetic rather than environmental influences, we corrected for genetic effects using polygenic risk scores that are known to explain part of the variance in metabolic biomarker levels [18, 19]. Second, we compared the metabolome-wide signature of prenatal famine exposure to an atlas of metabolic signatures marking risk of a range of common diseases to test for commonalities between the metabolic differences associated with prenatal exposure to famine and those previously associated with future disease risk. Our study reveals specific metabolic biomarker alterations and broader connections with a range of chronic diseases, providing new insights into how prenatal famine exposure shapes health across the life course.
Methods
Study population
The Dutch Hunger Winter Families study (DHWFS) is described in detail elsewhere [20]. In short, historical birth records were retrieved from three institutions in famine-exposed cities of all singleton births between 1 February 1945 and 31 March 1946 and a systematic sample of births born in 1943 or 1947. From these records, we identified 3307 individuals whose mothers were exposed to the famine during or immediately preceding that pregnancy and unexposed time-controls born before or after the famine. In total, 2300 of the 3307 individuals were located through population registries and were invited to participate in a telephone interview and in a clinical examination, together with a same-sex sibling not exposed to the famine (family-control). No differences were found in birth characteristics when comparing the subjects who were located to those who could not be located or when comparing the positive responders to those who did not respond to our invitation letter [20].
We conducted 1031 interviews and 971 clinical examinations between 2003 and 2005. One non-biological sibling identified with genetic analyses was excluded from the cohort. NMR metabolomics profiling was performed on serum samples of 962 individuals. Our sample for this study included 944 individuals after excluding non-fasted samples (n = 17) and an outlier in the metabolomics dataset as identified with principal component analysis (n = 1). For more information, refer to the flow chart of our study population (Additional file 1: Fig. S1, Additional file 1: Table S1).
The Dutch Hunger Winter Families study was approved by the Medical Ethics Committee of Leiden University Medical Center (P02.082), and the participants provided verbal consent at the start of the telephone interview and written informed consent at the start of the clinical examination.
Famine exposure definitions
Food rations were distributed centrally and below 900 kcal/day between 26 November 1944, and 15 May 1945 [8]. We defined famine exposure by the number of weeks during which the mother was exposed to < 900 kcal/day after the last menstrual period (LMP) recorded on the birth record [20]. The gestational period was estimated from the LMP of the mother and the date of birth of the child. To analyse the effect of timing of gestational exposure, we subdivide the gestational period into units of 10 weeks. We considered the mother exposed in gestational weeks 1–10, 11–20, 21–30, or 31 to delivery if these gestational time windows were entirely contained within this period and had an average exposure of < 900 kcal/day during an entire gestation period of 10 weeks. As the famine lasted 6 months, some participants were exposed to famine during two adjacent 10-week periods. In chronological order, pregnancies with LMP between 30 April 1944 and 24 August 1944 were considered exposed in weeks 31 to delivery, between 9 July 1944 and 15 October 1944 in pregnancy weeks 21–30, between 17 September 1944 and 24 December 1944 in pregnancy weeks 11–20, and between 26 November 1944 and 4 March 1945 in pregnancy weeks 1–10. Individuals with a LMP between 4 February and 12 May 1945 which were exposed to an average of < 900 kcal/day for less than 10 weeks before conception and up to 8 weeks post-conception are denoted as the weeks 9–0 weeks group. We defined individuals exposed to one or two of these definitions exposed to ‘any’ gestational exposure.
Characteristics
Information on health history, including information on the use of cholesterol-lowering drugs, was collected through telephone interviews. Measurement of height was carried out to the nearest millimeter using a portable stadiometer (Seca), and body weight was measured to the nearest 100 g by a portable scale (Seca). BMI was calculated from these measures (weight (kg)/[height (m)]2). Waist circumference (at level of iliac crests, intersection with midaxillary line) was measured to the nearest 1 mm with the use of a non-extensible measuring tape (Hoechstmass). Cholesterol measures were reported previously [14] and were assessed using standard enzymatic assays. LDL cholesterol was calculated for individuals with a triglyceride concentration lower than 400 mg/dl using the Friedewald formula. A blood draw was performed at the start of a 75-g oral glucose test, and fasted glucose was quickly assessed in serum by hexokinase reaction on a Modular P800 (Roche). The presence of type 2 diabetes was either determined through previous health history or defined as fasting glucose ≥ 7.0 mmol/l or 2 h glucose tolerance test ≥ 11.1 mmol/l [21].
Metabolic biomarker quantification
Metabolic biomarkers were measured from serum samples using a high-throughput 1H-NMR metabolomics platform developed by Nightingale Health Ltd. (Helsinki, Finland; nightingalehealth.com; biomarker quantification version 2021). Details of the procedure and application of the NMR metabolomics platform have been described elsewhere [22, 23]. This method provides simultaneous quantification of 249 metabolic biomarkers, of which 168 are directly measured and 81 are derived metabolic biomarkers, including 37 clinically validated metabolic biomarkers certified for diagnostic use. The metabolic biomarkers measured include amino acids, ketone bodies, lipids, fatty acids, and lipoprotein subclass distribution, particle size, and composition. A subset of the biomarkers was selected for inclusion in the presented analysis, focusing on the 168 directly measured metabolic biomarkers.
Values below the detection limit were treated as missing and imputed by setting them to the minimum value for each metabolic measure. A value of one was added to all metabolic biomarkers containing zeroes (i.e., x + 1), which indicated that they were below the limit of quantification. All metabolic biomarkers were then natural logarithmic transformed to obtain an approximately normal distribution. The metabolic biomarkers were subsequently scaled to standard deviation (SD) units (mean 0, SD 1) for use in the analysis, enabling the comparison of multiple metabolic measures with different units or with large differences in their concentration distributions.
Genotype data generation and polygenic scores
From our metabolomics sample population, 931 individuals also had genotype data available. Genotype data were measured using the Illumina Infinium™ Global Screening Array (GSA) genotyping platform (version 24 v3.0. Illumina Inc., San Diego, USA) by the Human Genomics Facility in the Genetic Laboratory Rotterdam (Rotterdam, the Netherlands). Imputation was performed using the 1000G P3v5 reference panel [24]. Polygenic scores were calculated for tyrosine, leucine, and glucose levels with the PRSice-2 software using the independent hits of publicly available genome-wide association study (GWAS) summary statistics (Additional file 1: Table S2) [25]. The base GWAS study utilized the same NMR platform and had participants with the same ancestry (European) as those in our study [18]. The polygenic scores were residualized on the first ten genetic principal components and subsequently scaled to standard deviation (SD) units (mean 0, SD 1) for analysis.
Statistical analysis
All analyses were performed in the R programming environment (R version 4.2.2). For all linear regression analyses, we used linear regression within a generalized estimating equations framework to account for the correlation between sibships (R geepack package, version 1.3.9) [26].
Validation of NMR metabolomics measures
We first validated the NMR measurements by testing the correlation between glucose, triglycerides, total cholesterol, LDL, and HDL cholesterol measured by routine clinical chemistry and Nightingale Health NMR (Additional file 1: Fig. S2) (26, 27). We subsequently tested whether previously observed associations between prenatal famine exposure and these five metabolic biomarkers as measured by routine clinical chemistry were consistently found when the same biomarkers were measured using Nightingale Health NMR. For this, we used linear regression models adjusted for age, sex, and cholesterol-lowering medication.
Metabolome-wide association study (MWAS)
Next, we performed a metabolome-wide association study of prenatal famine exposure by assessing the relationship between famine exposure and 168 metabolic biomarkers through linear regression models adjusted for age, sex, and cholesterol-lowering medication (main model). Due to the correlated nature of the metabolic biomarkers, 95% of the variation in the 168 metabolic biomarkers was explained by 14 principal components (Additional file 1: Fig. S3). Therefore, as previously described [27,28,29], we corrected for 14 independent tests using Bonferroni multiple testing correction (p value = 0.05/14 = 3.57 × 10−3).
Sensitivity analysis of the MWAS results
Sensitivity analyses were performed to assess the robustness of the results of the metabolome-wide association study of prenatal famine. First, to assess the effect of famine exposure independent of anthropometric measures or type 2 diabetes, the main model was additionally adjusted for BMI, waist circumference, and type 2 diabetes. Second, to isolate environmental influences on our metabolic outcomes, we corrected for potential differences in metabolic biomarker levels that could be attributed to genetics by additionally adjusting the main model for the polygenic scores of the metabolic biomarkers. Third, to check for potential differences between sexes, sex-stratified analyses were performed adjusting for the same covariates as the main model and an interaction term for sex and metabolic marker was included in the model to test whether potential differences were statistically significant. Fourth, potential gestation timing specific effects of famine exposure were examined by subdividing famine exposure into 5 gestational time windows. In the regression analysis, the single indicator of famine exposure was replaced with indicator variables identifying exposure within each of the gestational time windows.
Comparison to metabolic biomarker signatures of diseases
To assess whether the metabolic biomarkers associated with prenatal famine exposure were linked to metabolic changes previously associated with future disease risk, we first compared the metabolic biomarker signature associated with prenatal famine exposure to the metabolic biomarker signature predicting the incident risk of type 2 diabetes. For this, we utilized published results from a metabolome-wide study on incident type 2 diabetes using UK Biobank data [2]. Specifically, we correlated the effect sizes of famine exposure in DHWFS with the effect sizes in the UK Biobank for incident type 2 diabetes across the 135 shared metabolic biomarkers in both datasets.
We then extended our analysis and correlated the metabolic profile of prenatal famine to the publicly available metabolic signatures of a large set of diseases as estimated with UK Biobank data [3]. Out of 674 incident diseases available in the metabolomics atlas, we selected those with at least 1000 cases (out of a total population ranging from ~ 103,300 to ~ 118,000) to represent common diseases (n = 162), and those with at least one significant association with a metabolic biomarker in the UK Biobank analysis (p < 5 × 10−4) (n = 154), resulting in 154 diseases. The effect sizes of the overlapping 168 metabolic biomarkers were correlated between prenatal famine and each disease. We corrected for multiple testing using Bonferroni correction (p value = 0.05/154 = 3.2 × 10−4). Finally, we re-estimated the effect sizes of the association between prenatal famine exposure and all 168 metabolic biomarkers, while additionally adjusting for BMI and waist circumference. We then repeated the correlation analysis comparing this BMI- or waist circumference-adjusted prenatal famine metabolic biomarker signature with the 154 metabolic biomarker disease signatures from the UK Biobank.
Results
Population characteristics
Within the Dutch Hunger Winter Families Study, fasting NMR metabolomics data were available for 944 study participants. Among these participants, 480 (51%) were prenatally exposed to famine, and 464 (49%) were controls (including unexposed time controls born at the same institution as the exposed individuals and unexposed same-sex sibling controls both born either before or conceived after the famine). As previously reported, famine-exposed participants had an increased BMI [11] and a higher prevalence of type 2 diabetes [16], and controls were on average 0.9 years younger than famine-exposed. No differences were observed in sex or the use of cholesterol lowering medication (Table 1).
Validation of NMR metabolomics measures
To confirm the validity of the newly measured metabolomics measures in our study, we first compared our results to previously measured clinical chemistry data available for five metabolic biomarkers, namely fasted glucose, triglycerides, total cholesterol, LDL, and HDL cholesterol [14, 17]. We observed high correlations (r ≥ 0.9) in line with previous studies [3, 30], and the associations of clinical chemistry and NMR biomarkers with prenatal famine were consistent (Additional file 1: Fig. S2, Additional file 1: Table S3).
Metabolome-wide association study on prenatal famine exposure
Next, we examined the association of any prenatal famine exposure with all 168 metabolic biomarkers individually. Prenatal famine exposure was associated with higher tyrosine (effect size 0.28 SD), leucine (0.21 SD), glucose (0.23 SD), and isoleucine (0.18 SD) concentrations (p < 3 × 10−3; all analyses adjusted for age, sex, and use of cholesterol-lowering drugs) (Fig. 1A, Additional file 2: Table S4).
We performed three sets of follow-up analyses for tyrosine, leucine, and glucose to gain further insight into these associations. Isoleucine was excluded because it was highly correlated with leucine (r = 0.9), both are branched-chain amino acids, while leucine showed the stronger association with famine exposure (Fig. 1B, Additional file 1: Fig. S4). First, the associations between prenatal famine exposure and tyrosine, leucine, and glucose remained after including BMI, waist circumference, or type 2 diabetes as a covariate in the model (Fig. 1C, Additional file 1: Table S5). Second, we adjusted these associations for potential differences that may be attributed to genetics. Since the polygenic scores of each metabolic biomarker explained only approximately 1–5% of their variance (Additional file 1: Table S2), the associations were not affected by including the polygenic scores as covariates (Fig. 1C). Third, we explored whether associations between famine exposure and the three metabolic biomarkers were dependent on sex or the timing of exposure during gestation (Additional file 1: Fig. S5). We found no evidence that our findings differed according to sex or timing of exposure during pregnancy. The effect sizes across different exposure timing subgroups were similar to estimates of the main analysis, although the majority of these exposure timing sub-categories were not statistically significant (0.02 ≤ p ≤ 0.8). In the sex-stratified analysis, the effect sizes for glucose and tyrosine were lower in females than males (0.0002 ≤ p ≤ 0.08), but we found no statistical evidence for effect modification (interaction p values > 0.39).
Comparison to metabolic biomarker signatures of diseases
The metabolic biomarkers we found to be associated with prenatal famine exposure, namely tyrosine, glucose, leucine, and isoleucine, were previously reported to be associated with type 2 diabetes risk [2, 31]. To further investigate whether these associations reflect an increased risk of type 2 diabetes among individuals prenatally exposed to famine, we utilized a previously reported metabolic biomarker signature of incident type 2 diabetes from UK Biobank [2] and compared it to the complete set of biomarker associations in our study. Specifically, we took the effect sizes of 135 metabolic biomarkers for the risk of type 2 diabetes and compared them to the effect sizes we observed for prenatal famine. The metabolic biomarker signature of prenatal famine exposure was highly correlated with that of incident type 2 diabetes (r = 0.77, p = 3 × 10−27; Fig. 2A). This similarity persisted when we re-estimated the effect sizes for prenatal famine exposure after excluding participants with type 2 diabetes (r = 0.67, p = 1 × 10−18) (Fig. 2B).
To explore whether the metabolic biomarker profile of prenatal famine exposure may reflect a risk of diseases beyond type 2 diabetes, we extended the analysis to recently published atlas of signatures of a wide range of diseases in the UK Biobank [3]. We focused on metabolic biomarker signatures for the future onset of disease obtained from individuals not affected by the disease of interest at baseline. For the analysis, we utilized a subset of 154 common incident diseases that had at least one metabolic biomarker association in the UK Biobank (p < 5 × 10−4). Remarkably, the metabolic biomarker signature of prenatal famine exposure was positively correlated with the metabolic biomarker signature of 115 diseases (75%; 0.3 ≤ r ≤ 0.9, p < 3.2 × 10−4) and negatively correlated with 13 diseases (8%; − 0.9 ≤ r ≤ -0.4, p < 3.2 × 10−4) (Additional file 2: Table S6). The metabolic biomarker signature of prenatal famine exposure exhibited the strongest correlation with the signature of the future risk of myocardial infarction (r = 0.9, p = 1.8 × 10−47). Other diseases with a strong correlation (r ≥ 0.7) included those related to the digestive system, diseases with an endocrine, and nutritional and metabolic component as well as diseases of the nervous system (Fig. 3). The diseases displaying a negative correlation were primarily associated with injury and other consequences of external causes, such as fractures and open wounds (Additional file 2: Table S6).
We hypothesized that a potential common factor among the diseases with a similar metabolic biomarker signature is obesity. To test this hypothesis, we re-estimated the effect sizes for prenatal famine exposure while additionally adjusting for BMI and then re-calculated the correlation between the resulting BMI-adjusted metabolic biomarker signature with the signatures of the 154 common incident diseases (Additional file 2: Table S6). The strength of the correlations was consistently attenuated across all diseases (mean = − 58%; SD = 19%). Among the 30 diseases whose metabolic biomarker signature was most similar to that of prenatal famine, the attenuation ranged between 27 and 48%, and the correlations remained moderate (0.4 ≤ r ≤ 0.6). The degree of attenuation was not linked to whether the disease had an obvious metabolic component (Fig. 4). Similar results were obtained when repeating the analysis adjusting for waist circumference instead of BMI (Additional file 1: Fig. S6).
Discussion
We further defined the metabolic phenotype associated with prenatal famine exposure using nuclear magnetic resonance (NMR) metabolomic profiling. We show that prenatal exposure to famine is associated with specific metabolic differences later in life, including higher levels of branched-chain amino acids (BCAA), an aromatic amino acid, and glucose. In addition, we report that the metabolic biomarker signature of prenatal famine has marked similarities to the signature of a wide range of common diseases.
Our study indicated specific differences in the metabolic profiles of famine-exposed individuals compared to controls. We observed that those exposed to famine prenatally have higher levels of the aromatic amino acid tyrosine, the branched-chain amino acids leucine and isoleucine, and glucose six decades after exposure. All four metabolic biomarkers have been linked to type 2 diabetes and thus support the known association between prenatal famine exposure and type 2 diabetes risk in adulthood [2, 6]. In addition, higher levels of other branched-chain and aromatic amino acids such as valine and phenylalanine that have also been associated with type 2 diabetes showed a nominally significant association with prenatal famine exposure, further supporting the link between prenatal famine and type 2 diabetes risk [2]. Interestingly, the metabolic biomarker associations with prenatal famine were independent of BMI and type 2 diabetes status, indicating that they may not be fully driven by the higher BMI and increased prevalence of type 2 diabetes among famine-exposed individuals.
The link with a higher type 2 diabetes risk among individuals exposed to famine in the prenatal period was supported by investigating the complete range of metabolic biomarkers. We observed a strong resemblance in the metabolic biomarker signature of prenatal famine with that of the future onset of type 2 diabetes [2]. Moreover, the strong correlation of the famine signature with the incident type 2 diabetes signature persisted after excluding participants who were already diagnosed with type 2 diabetes at the time of assessment. This result reinforces that type 2 diabetes is a main health outcome of prenatal famine exposure [6] and indicates that even exposed individuals not diagnosed with type 2 diabetes have an increased risk of developing this condition in the future.
Upon extending our analysis beyond type 2 diabetes, we observed a striking similarity between the metabolic biomarker signature of famine exposure and a wide range of other incident disease signatures. This not only included conditions like disorders of lipoprotein metabolism, obesity, and type 2 diabetes but also a priori less expected diseases like osteoarthritis, kidney stones, and depressive disorders. Interestingly, these high correlations were substantially attenuated for all incident diseases when we repeated the analysis using a metabolic biomarker profile of prenatal famine that was adjusted for BMI. Our findings suggest that BMI is a shared risk factor for or consequence of the diseases and that the metabolic biomarkers measured by the NMR platform used may have a particularly strong association with BMI. Of note, after accounting for BMI, moderate correlations between the metabolic biomarker profiles of incident disease and prenatal famine remained. Our findings combined with previous studies highlight that the NMR platform is especially useful for disease risk prediction, but is of limited value to gain mechanistic insights in specific diseases. Further studies with more comprehensive metabolomics platforms are needed to fully understand why the metabolic biomarker signature of prenatal famine exposure links to a broad range of diseases, including effects independent of obesity.
Conclusions
Prenatal exposure to famine is associated with marked metabolic alterations later in life. Differences in individual metabolic biomarkers include higher levels of branched-chain amino acids, aromatic amino acids, and glucose. Moreover, the metabolic biomarker signature characteristic of prenatal famine strongly resembles that of a diverse set of diseases. Overall, our findings underscore the broad impact of prenatal famine on adult health and highlight obesity as a plausible contributing factor.
Availability of data and materials
Data is provided within the manuscript or supplementary information files.
Abbreviations
- BCAA:
-
Branched-chain amino acids
- BMI:
-
Body mass index
- DHWFS:
-
Dutch Hunger Winter Families study
- GWAS:
-
Genome-wide association study
- LMP:
-
Last menstrual period
- NMR:
-
Nuclear magnetic resonance
- SD:
-
Standard deviation
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Acknowledgements
Not applicable.
Funding
This research was supported by US NIH grants (R01HL67914, R01AG066887, and R01AG042190). The NMR metabolomics measurement of the DHWFS samples was funded by the BBMRI-NL Metabolomics consortium (a research infrastructure financed by the Dutch government, NWO 184.021.007 and 184.033.111). DWB is a fellow of the Canadian Institute for Advanced Research Child Brain Development (CIFAR CBD) Network. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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Contributions
M.J.T., D.W.B., L.H.L. and B.T.H. were involved in the conception, design, and conduct of the study and interpretation of the results. M.J.T. performed the analyses and wrote the first draft of the manuscript. T.B.K., J.Z., C.L., S.W., T.W., E.W.T., D.W.B, L.H.L, and B.T.H. critically reviewed the manuscript. All authors approved the final version of the manuscript.
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X handles: @bds_lumc (Biomedical Data Science Department at Leiden University Medical Center), @LUMC_Leiden (Leiden University Medical Center).
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Ethics approval and consent to participate
The Dutch Hunger Winter Families study was approved by the Medical Ethics Committee of Leiden University Medical Center (P02.082), and the participants provided verbal consent and written informed consent.
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The authors declare no competing interests.
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Membership of the BBMRI-NL Metabolomics consortium is provided in Additional file 1.
Supplementary Information
12916_2024_3529_MOESM1_ESM.docx
Additional file 1: Table S1. Comparison of participants’ characteristics at different points of the study. Table S2. Polygenic scores of metabolic biomarkers associated with prenatal famine exposure. Table S3. Association of prenatal famine exposure with five metabolic biomarkers, as measured by NMR and clinical chemistry. Table S5. Additional adjustment of main model* for BMI and waist circumference for prenatal famine-associated metabolic biomarkers. Fig. S1. Flow chart of the study population. Fig. S2. Scatter plots and correlations between metabolic biomarkers measured by both NMR and clinical chemistry. Fig. S3. Scree plot of the Principal Component analysis (PCA) of the 168 metabolic markers included in our analysis. Fig. S4. Clustering of the metabolic biomarkers according to their correlation. Fig. S5. Sex- and exposure timing-specific analyses on famine-associated metabolic biomarkers. Fig. S6. Effect of additional adjustment of BMI and waist circumference in the correlation analysis of the metabolic biomarker signature associated with famine and the metabolic biomarker signature associated with various common diseases. Supplemental information. BBMRI-NL Metabolomics consortium banner.
12916_2024_3529_MOESM2_ESM.xlsx
Additional file 2: Table S4. Association of prenatal famine exposure with 168 metabolic biomarkers. Table S6. Correlation of the metabolic biomarker signature of prenatal famine exposure to the metabolic biomarker signature of diseases.
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Taeubert, M.J., Kuipers, T.B., Zhou, J. et al. Adults prenatally exposed to the Dutch Famine exhibit a metabolic signature associated with a broad spectrum of common diseases. BMC Med 22, 309 (2024). https://doi.org/10.1186/s12916-024-03529-2
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DOI: https://doi.org/10.1186/s12916-024-03529-2