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Gupta MK, Gouda G, Vadde R. Relation Between Obesity and Type 2 Diabetes: Evolutionary Insights, Perspectives and Controversies. Curr Obes Rep 2024; 13:475-495. [PMID: 38850502 DOI: 10.1007/s13679-024-00572-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 06/10/2024]
Abstract
PURPOSE OF REVIEW Since the mid-twentieth century, obesity and its related comorbidities, notably insulin resistance (IR) and type 2 diabetes (T2D), have surged. Nevertheless, their underlying mechanisms remain elusive. Evolutionary medicine (EM) sheds light on these issues by examining how evolutionary processes shape traits and diseases, offering insights for medical practice. This review summarizes the pathogenesis and genetics of obesity-related IR and T2D. Subsequently, delving into their evolutionary connections. Addressing limitations and proposing future research directions aims to enhance our understanding of these conditions, paving the way for improved treatments and prevention strategies. RECENT FINDINGS Several evolutionary hypotheses have been proposed to unmask the origin of obesity-related IR and T2D, e.g., the "thrifty genotype" hypothesis suggests that certain "thrifty genes" that helped hunter-gatherer populations efficiently store energy as fat during feast-famine cycles are now maladaptive in our modern obesogenic environment. The "drifty genotype" theory suggests that if thrifty genes were advantageous, they would have spread widely, but proposes genetic drift instead. The "behavioral switch" and "carnivore connection" hypotheses propose insulin resistance as an adaptation for a brain-dependent, low-carbohydrate lifestyle. The thrifty phenotype theory suggests various metabolic outcomes shaped by genes and environment during development. However, the majority of these hypotheses lack experimental validation. Understanding why ancestral advantages now predispose us to diseases may aid in drug development and prevention of disease. EM helps us to understand the evolutionary relation between obesity-related IR and T2D. But still gaps and contradictions persist. Further interdisciplinary research is required to elucidate complete mechanisms.
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Affiliation(s)
- Manoj Kumar Gupta
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India.
| | - Gayatri Gouda
- ICAR-National Rice Research Institute, Cuttack, 753 006, Odisha, India
| | - Ramakrishna Vadde
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India
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Elechi JOG, Sirianni R, Conforti FL, Cione E, Pellegrino M. Food System Transformation and Gut Microbiota Transition: Evidence on Advancing Obesity, Cardiovascular Diseases, and Cancers-A Narrative Review. Foods 2023; 12:2286. [PMID: 37372497 DOI: 10.3390/foods12122286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Food, a vital component of our daily life, is fundamental to our health and well-being, and the knowledge and practices relating to food have been passed down from countless generations of ancestors. Systems may be used to describe this extremely extensive and varied body of agricultural and gastronomic knowledge that has been gathered via evolutionary processes. The gut microbiota also underwent changes as the food system did, and these alterations had a variety of effects on human health. In recent decades, the gut microbiome has gained attention due to its health benefits as well as its pathological effects on human health. Many studies have shown that a person's gut microbiota partially determines the nutritional value of food and that diet, in turn, shapes both the microbiota and the microbiome. The current narrative review aims to explain how changes in the food system over time affect the makeup and evolution of the gut microbiota, advancing obesity, cardiovascular disease (CVD), and cancer. After a brief discussion of the food system's variety and the gut microbiota's functions, we concentrate on the relationship between the evolution of food system transformation and gut microbiota system transition linked to the increase of non-communicable diseases (NCDs). Finally, we also describe sustainable food system transformation strategies to ensure healthy microbiota composition recovery and maintain the host gut barrier and immune functions to reverse advancing NCDs.
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Affiliation(s)
- Jasper Okoro Godwin Elechi
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Rosa Sirianni
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Francesca Luisa Conforti
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Erika Cione
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Michele Pellegrino
- Department of Pharmacy and Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
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Aisyah R, Sadewa AH, Patria SY, Wahab A. The PPARGC1A Is the Gene Responsible for Thrifty Metabolism Related Metabolic Diseases: A Scoping Review. Genes (Basel) 2022; 13:1894. [PMID: 36292779 PMCID: PMC9601628 DOI: 10.3390/genes13101894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 07/29/2023] Open
Abstract
The "thrifty genotype" hypothesis has thus far described the relationship between specific genes and the population's resilience to food scarcity circumstances, but its link to the widespread prevalence of genetic diseases and metabolic syndrome has not been adequately mapped. The purpose of the study was to discover genes responsible for thrifty metabolism. A systematic search with keywords was performed for relevant titles. This study used the article's database published by Pubmed, Proquest, and EBSCO from January, 2009 to September, 2022. Out of 418 papers screened for eligibility, the final evaluation determined that five studies should be included in the analysis. Results indicated that PPARGC1A Gly482Ser led to high BMI in the Tongans population but was unrelated to the onset of type 2 diabetes mellitus, but this was not the case in the Maori population. Significantly differing frequencies of PPAR C1431T and Pro12Ala gene polymorphisms were observed in the Iranian population. GWAS identification of additional genes in Asian and European populations did not produce consistent findings. As a summary, PPARGC1A Gly482Ser addresses as the gene responsible for thrifty metabolism in the Pacific population although some studies show inconsistent results.
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Affiliation(s)
- Riandini Aisyah
- Department of Molecular Biology, Faculty of Medicine, Universitas Muhammadiyah Surakarta, Surakarta 57169, Indonesia
- Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Ahmad Hamim Sadewa
- Department of Biochemistry, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Suryono Yudha Patria
- Division of Pediatric Endocrinology, Department of Pediatrics, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Abdul Wahab
- Department of Biostatistics, Epidemiology and Population Health, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
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Eco-Evolutionary Dynamics of the Human-Gut Microbiota Symbiosis in a Changing Nutritional Environment. Evol Biol 2022. [DOI: 10.1007/s11692-022-09569-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractThe operational harmony between living beings and their circumstances, their ever-changing environment, is a constitutive condition of their existence. Nutrition and symbiosis are two essential aspects of this harmony. Disruption of the symbiosis between host and gut microbiota, the so-called dysbiosis, as well as the inadequate diet from which it results, contribute to the etiology of immunometabolic disorders. Research into the development of these diseases is highly influenced by our understanding of the evolutionary roots of metabolic functioning, thereby considering that chronic non-communicable diseases arise from an evolutionary mismatch. However, the lens has been mostly directed toward energy availability and metabolism, but away from our closest environmental factor, the gut microbiota. Thus, this paper proposes a narrative thread that places symbiosis in an evolutionary perspective, expanding the traditional framework of humans’ adaptation to their food environment.
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Meeks KAC, Bentley AR, Adeyemo AA, Rotimi CN. Evolutionary forces in diabetes and hypertension pathogenesis in Africans. Hum Mol Genet 2021; 30:R110-R118. [PMID: 33734377 DOI: 10.1093/hmg/ddaa238] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/16/2020] [Accepted: 10/22/2020] [Indexed: 11/12/2022] Open
Abstract
Rates of type 2 diabetes (T2D) and hypertension are increasing rapidly in urbanizing sub-Saharan Africa (SSA). While lifestyle factors drive the increases in T2D and hypertension prevalence, evidence across populations shows that genetic variation, which is driven by evolutionary forces including a natural selection that shaped the human genome, also plays a role. Here we report the evidence for the effect of selection in African genomes on mechanisms underlying T2D and hypertension, including energy metabolism, adipose tissue biology, insulin action and salt retention. Selection effects found for variants in genes PPARA and TCF7L2 may have enabled Africans to respond to nutritional challenges by altering carbohydrate and lipid metabolism. Likewise, African-ancestry-specific characteristics of adipose tissue biology (low visceral adipose tissue [VAT], high intermuscular adipose tissue and a strong association between VAT and adiponectin) may have been selected for in response to nutritional and infectious disease challenges in the African environment. Evidence for selection effects on insulin action, including insulin resistance and secretion, has been found for several genes including MPHOSPH9, TMEM127, ZRANB3 and MC3R. These effects may have been historically adaptive in critical conditions, such as famine and inflammation. A strong correlation between hypertension susceptibility variants and latitude supports the hypothesis of selection for salt retention mechanisms in warm, humid climates. Nevertheless, adaptive genomics studies in African populations are scarce. More work is needed, particularly genomics studies covering the wide diversity of African populations in SSA and Africans in diaspora, as well as further functional assessment of established risk loci.
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Affiliation(s)
- Karlijn A C Meeks
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Amy R Bentley
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Adebowale A Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Charles N Rotimi
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Analysis of Evolution and Ethnic Diversity at Glucose-Associated SNPs of Circadian Clock-Related Loci with Cryptochrome 1, Cryptochrome 2, and Melatonin receptor 1B. Biochem Genet 2021; 59:1173-1184. [PMID: 33709300 DOI: 10.1007/s10528-021-10045-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/29/2021] [Indexed: 10/21/2022]
Abstract
Diabetes shows high heritability and, worldwide, causes significant health problems including cardiovascular disease and stroke. There is significant variation in the frequency of diabetes between different populations. Both Cryptochromes and Melatonin have a major role to regulate the circadian clock. Circadian clock failure causes metabolic dysfunctions including diabetes and obesity. Variations in the Cryptochrome 1, the Cryptochrome 2, and the Melatonin receptor 1B (MTNR1B) genes show associations with fasting glucose, and are also related to circadian clock. Here, we analyzed evidence for genetic selection and ethnic diversity at circadian clock- and glucose-related gene loci associated with Cryptochrome 1, Cryptochrome 2, and MTNR1B. We carried out a 3-step genetic method to investigate genetic selection at the Cryptochrome 1, Cryptochrome 2, and MTNR1B on four populations from the 1000 Genomes Project and HapMap. First we used F-statistics to quantify genetic population differences and find ethnic diversity. Then we applied a long-range haplotype test to detect significant extreme long haplotypes, and then the integrated haplotype score (iHS) to find genetic selection at Cryptochrome 1, Cryptochrome 2, and MTNR1B. We observed genetic population differences and ethnic diversity at one glucose-associated Cryptochrome 1 single-nucleotide polymorphism (SNP) (rs8192440), one glucose-associated Cryptochrome 2 SNP (rs11605924), and one glucose-associated MTNR1B SNP (rs10830963) by F-statistics. Both Cryptochrome 1 and MTNR1B also showed selection by the iHS. These observations show new evidence for evolution at Cryptochrome 1, Cryptochrome 2 and MTNR1B. Further investigation should continue to examine the evolution of circadian clock- and glucose-related genes.
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Ben-Dor M, Sirtoli R, Barkai R. The evolution of the human trophic level during the Pleistocene. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 175 Suppl 72:27-56. [PMID: 33675083 DOI: 10.1002/ajpa.24247] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 12/07/2020] [Accepted: 01/19/2021] [Indexed: 02/06/2023]
Abstract
The human trophic level (HTL) during the Pleistocene and its degree of variability serve, explicitly or tacitly, as the basis of many explanations for human evolution, behavior, and culture. Previous attempts to reconstruct the HTL have relied heavily on an analogy with recent hunter-gatherer groups' diets. In addition to technological differences, recent findings of substantial ecological differences between the Pleistocene and the Anthropocene cast doubt regarding that analogy's validity. Surprisingly little systematic evolution-guided evidence served to reconstruct HTL. Here, we reconstruct the HTL during the Pleistocene by reviewing evidence for the impact of the HTL on the biological, ecological, and behavioral systems derived from various existing studies. We adapt a paleobiological and paleoecological approach, including evidence from human physiology and genetics, archaeology, paleontology, and zoology, and identified 25 sources of evidence in total. The evidence shows that the trophic level of the Homo lineage that most probably led to modern humans evolved from a low base to a high, carnivorous position during the Pleistocene, beginning with Homo habilis and peaking in Homo erectus. A reversal of that trend appears in the Upper Paleolithic, strengthening in the Mesolithic/Epipaleolithic and Neolithic, and culminating with the advent of agriculture. We conclude that it is possible to reach a credible reconstruction of the HTL without relying on a simple analogy with recent hunter-gatherers' diets. The memory of an adaptation to a trophic level that is embedded in modern humans' biology in the form of genetics, metabolism, and morphology is a fruitful line of investigation of past HTLs, whose potential we have only started to explore.
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Affiliation(s)
- Miki Ben-Dor
- Department of Archaeology, Tel Aviv University, Tel Aviv, Israel
| | | | - Ran Barkai
- Department of Archaeology, Tel Aviv University, Tel Aviv, Israel
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Analysis of genetic selection at insulin receptor substrate-2 gene loci. J Diabetes Metab Disord 2021; 20:307-311. [PMID: 34222068 DOI: 10.1007/s40200-021-00745-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/14/2021] [Indexed: 10/22/2022]
Abstract
Purpose Type 2 diabetes mellitus (T2DM) is highly heritable and exhibits significant variability in prevalence between different populations. Prevalence of T2DM is higher in Asian and African relative to European populations. During evolution, traditional feast-famine cycles likely led to significant natural selection impacting metabolic genes. Human adaptation to environmental changes (food supply, lifestyle, climate, and geography) likely influenced differential selection of T2DM-associated genes. Together, insulin receptor substrate-1 and -2 (IRS1 and IRS2) genes encode the major ligands of insulin and IGF1 receptors. Irs2-deficient mice exhibit a T2DM phenotype with severe insulin resistance, and a common IRS2 polymorphism is associated with T2DM. Therefore, the present study sought evidence of natural selection at IRS2 loci. Methods Data were sourced from the HapMap and 1000 Genomes projects, comprising four different populations with distinct ancestries: European, Yoruba, Han Chinese, and Japanese. A three-step method was applied to detect IRS2 locus selection. The long-range haplotype (LRH) test detected unusual extended haplotypes, the integrated haplotype score (iHS) detected selection, and Wright's F-statistics (particularly Wright's fixation index: FST) were calculated as a measure of population differentiation. Results The African population exhibited highly significant LRH findings (percentile >99.9, p = 0.005-0.0009), while both the European and African populations exhibited extreme positive iHS test scores ([iHS] >2.5). Conclusion These findings indicate that genetic selection has occurred at the IRS2 locus, warranting further research into the adaptive evolution of metabolic disorder-associated genes. Supplementary Information The online version contains supplementary material available at 10.1007/s40200-021-00745-y.
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9
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Hanson RL, Van Hout CV, Hsueh WC, Shuldiner AR, Kobes S, Sinha M, Baier LJ, Knowler WC. Assessment of the potential role of natural selection in type 2 diabetes and related traits across human continental ancestry groups: comparison of phenotypic with genotypic divergence. Diabetologia 2020; 63:2616-2627. [PMID: 32886191 PMCID: PMC7642101 DOI: 10.1007/s00125-020-05272-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 07/22/2020] [Indexed: 11/30/2022]
Abstract
AIMS/HYPOTHESIS Prevalence of type 2 diabetes differs among human ancestry groups, and many hypotheses invoke differential natural selection to account for these differences. We sought to assess the potential role of differential natural selection across major continental ancestry groups for diabetes and related traits, by comparison of genetic and phenotypic differences. METHODS This was a cross-sectional comparison among 734 individuals from an urban sample (none of whom was more closely related to another than third-degree relatives), including 83 African Americans, 523 American Indians and 128 European Americans. Participants were not recruited based on diabetes status or other traits. BMI was calculated, and diabetes was diagnosed by a 75 g oral glucose tolerance test. In those with normal glucose tolerance (n = 434), fasting insulin and 30 min post-load insulin, adjusted for 30 min glucose, were taken as measures of insulin resistance and secretion, respectively. Whole exome sequencing was performed, resulting in 97,388 common (minor allele frequency ≥ 5%) variants; the coancestry coefficient (FST) was calculated across all markers as a measure of genetic divergence among ancestry groups. The phenotypic divergence index (PST) was also calculated from the phenotypic differences and heritability (which was estimated from genetic relatedness calculated empirically across all markers in 761 American Indian participants prior to the exclusion of close relatives). Under evolutionary neutrality, the expectation is PST = FST, while for traits under differential selection PST is expected to be significantly greater than FST. A bootstrap procedure was used to test the hypothesis PST = FST. RESULTS: With adjustment for age and sex, prevalence of type 2 diabetes was 34.0% in American Indians, 12.4% in African Americans and 10.4% in European Americans (p = 2.9 × 10-10 for difference among groups). Mean BMI was 36.3, 33.4 and 33.0 kg/m2, respectively (p = 1.9 × 10-7). Mean fasting insulin was 63.8, 48.4 and 45.2 pmol/l (p = 9.2 × 10-5), while mean 30 min insulin was 559.8, 553.5 and 358.8 pmol/l, respectively (p = 5.7 × 10-8). FST across all markers was 0.130, while PST for liability to diabetes, adjusted for age and sex, was 0.149 (p = 0.35 for difference with FST). PST was 0.094 for BMI (p = 0.54), 0.095 for fasting insulin (p = 0.54) and 0.216 (p = 0.18) for 30 min insulin. For type 2 diabetes and BMI, the maximum divergence between populations was observed between American Indians and European Americans (PST-MAX = 0.22, p = 0.37, and PST-MAX = 0.14, p = 0.61), which suggests that a relatively modest 22% or 14% of the genetic variance, respectively, can potentially be explained by differential selection (assuming the absence of neutral drift). CONCLUSIONS/INTERPRETATION These analyses suggest that while type 2 diabetes and related traits differ significantly among continental ancestry groups, the differences are consistent with neutral expectations based on heritability and genetic distances. While these analyses do not exclude a modest role for natural selection, they do not support the hypothesis that differential natural selection is necessary to explain the phenotypic differences among these ancestry groups. Graphical abstract.
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Affiliation(s)
- Robert L Hanson
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA.
| | | | - Wen-Chi Hsueh
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | | | - Sayuko Kobes
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Madhumita Sinha
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Leslie J Baier
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | | | - William C Knowler
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
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Gupta MK, Vadde R. Divergent evolution and purifying selection of the Type 2 diabetes gene sequences in Drosophila: a phylogenomic study. Genetica 2020; 148:269-282. [PMID: 32804315 DOI: 10.1007/s10709-020-00101-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 08/12/2020] [Indexed: 11/24/2022]
Abstract
The recently developed phylogenomic approach provides a unique way to identify disease risk or protective allele in any organism. While risk alleles evolve mostly under purifying selection, protective alleles are evolving either under balancing or positive selection. Owing to insufficient information, authors employed the phylogenomic approach to detect the nature of selection acting on type 2 diabetes (T2D) genes in Drosophila genus using various models of CODEML utility of PAML. The obtained result revealed that T2D gene sequences are evolving under purifying selection. However, only a few sites in membrane proteins encoded via CG8051, ZnT35C, and kar, are significantly evolving under positive selection under specific scenarios, which might be because of positive or adaptive evolution in response to changing niche, diet or other factors. In the near future, this information will be highly useful in the field of evolutionary medicine and the drug discovery process.
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Affiliation(s)
- Manoj Kumar Gupta
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, Andhra Pradesh, 516005, India
| | - Ramakrishna Vadde
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, Andhra Pradesh, 516005, India.
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Lalrohlui F, Zohmingthanga J, Hruaii V, Kumar NS. Genomic profiling of mitochondrial DNA reveals novel complex gene mutations in familial type 2 diabetes mellitus individuals from Mizo ethnic population, Northeast India. Mitochondrion 2019; 51:7-14. [PMID: 31862415 DOI: 10.1016/j.mito.2019.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/12/2019] [Accepted: 12/05/2019] [Indexed: 01/07/2023]
Abstract
The variants reported for mitochondrial DNA (mtDNA) and type 2 diabetes (T2D) may not be accountable for the disease in certain other populations and the risk depends upon numerous factors which may include genetics, environment as well as ethnicity. This leads to a challenge in identifying, exploring and comparing the variants between diabetic cases and healthy controls in a remote unexplored tribal population. To study the possible contribution of mtDNA variants, we sequenced the entire mitochondrial genomes and the frequencies of mtSNPs, their association with familial T2D and the potential impact of non-synonymous substitutions on protein functions were determined. The mtSNP 8584 G > A (ATP6: A20T) was detected in 14.28% of the diabetic patients and none in the control groups. The mitochondrial ND3 variant 10398A > G was found to be significantly associated with the risk of T2D (OR = 9.489, 95% CI = 1.161-77.54, P value = 0.036). A novel Frame-shift substitution ND5: 81_81ins A at position 12,417 was observed in 53.57% of diabetic individuals. Majority of the variants lie in tRNA-Phe in the non-protein coding region of mtDNA for both diabetic cases and common cases. We concluded that mutations in the coding (synonymous or non-synonymous) and noncoding regions of the mitochondria might have contribution towards the development of T2D. Our study is the first to report the distinct mitochondrial variants which may be attributed to the susceptibility as well as development of type 2 diabetes in an ethnic tribe from northeast India.
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Affiliation(s)
- Freda Lalrohlui
- Department of Biotechnology, Mizoram University, Aizawl 796004, Mizoram, India
| | | | - Vanlal Hruaii
- Department of Medicine, Zoram Medical College, Aizawl 796005, Mizoram, India
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Nutrition, the visceral immune system, and the evolutionary origins of pathogenic obesity. Proc Natl Acad Sci U S A 2018; 116:723-731. [PMID: 30598443 PMCID: PMC6338860 DOI: 10.1073/pnas.1809046116] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The global obesity epidemic is the subject of an immense, diversely specialized research effort. An evolutionary analysis reveals connections among disparate findings, starting with two well-documented facts: Obesity-associated illnesses (e.g., type-2 diabetes and cardiovascular disease), are especially common in: (i) adults with abdominal obesity, especially enlargement of visceral adipose tissue (VAT), a tissue with important immune functions; and (ii) individuals with poor fetal nutrition whose nutritional input increases later in life. I hypothesize that selection favored the evolution of increased lifelong investment in VAT in individuals likely to suffer lifelong malnutrition because of its importance in fighting intraabdominal infections. Then, when increased nutrition violates the adaptive fetal prediction of lifelong nutritional deficit, preferential VAT investment could contribute to abdominal obesity and chronic inflammatory disease. VAT prioritization may help explain several patterns of nutrition-related disease: the paradoxical increase of chronic disease with increased food availability in recently urbanized and migrant populations; correlations between poor fetal nutrition, improved childhood (catch-up) growth, and adult metabolic syndrome; and survival differences between children with marasmus and kwashiorkor malnutrition. Fats and sugars can aggravate chronic inflammation via effects on intestinal bacteria regulating gut permeability to visceral pathogens. The extremes in a nutrition-sensitive trade-off between visceral (immune-function) vs. subcutaneous (body shape) adiposity may have been favored by selection in highly stratified premedicine societies. Altered adipose allocation in populations with long histories of social stratification and malnutrition may be the result of genetic accommodation of developmental responses to poor maternal/fetal conditions, increasing their vulnerability to inflammatory disease.
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Food Aversions and Cravings during Pregnancy on Yasawa Island, Fiji. HUMAN NATURE-AN INTERDISCIPLINARY BIOSOCIAL PERSPECTIVE 2017; 27:296-315. [PMID: 27180176 DOI: 10.1007/s12110-016-9262-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Women often experience novel food aversions and cravings during pregnancy. These appetite changes have been hypothesized to work alongside cultural strategies as adaptive responses to the challenges posed by pregnancy (e.g., maternal immune suppression). Here, we report a study that assessed whether data from an indigenous population in Fiji are consistent with the predictions of this hypothesis. We found that aversions focus predominantly on foods expected to exacerbate the challenges of pregnancy. Cravings focus on foods that provide calories and micronutrients while posing few threats to mothers and fetuses. We also found that women who experience aversions to specific foods are more likely to crave foods that meet nutritional needs similar to those provided by the aversive foods. These findings are in line with the predictions of the hypothesis. This adds further weight to the argument that appetite changes may function in parallel with cultural mechanisms to solve pregnancy challenges.
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Priehodová E, Austerlitz F, Čížková M, Mokhtar MG, Poloni ES, Černý V. The historical spread of
A
rabian
P
astoralists to the eastern
A
frican
S
ahel evidenced by the lactase persistence −13,915*G allele and mitochondrial DNA. Am J Hum Biol 2017; 29. [DOI: 10.1002/ajhb.22950] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/01/2016] [Accepted: 11/28/2016] [Indexed: 12/15/2022] Open
Affiliation(s)
- Edita Priehodová
- Department of Anthropology and Human GeneticsFaculty of Science Charles UniversityPrague Czech Republic
| | - Frédéric Austerlitz
- UMR 7206 EcoAnthropologie et Ethnobiologie, CNRS/MNHN/Université Paris Diderot, Musée de l'HommeParis
| | - Martina Čížková
- Department of Anthropology and Human GeneticsFaculty of Science Charles UniversityPrague Czech Republic
| | | | - Estella S. Poloni
- Department of Genetics and EvolutionAnthropology Unit, Faculty of Science, University of Geneva, Switzerland
| | - Viktor Černý
- Archaeogenetics LaboratoryInstitute of Archaeology of the Academy of Sciences of the Czech RepublicPrague
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Little BB, Peña Reyes ME, Malina RM. Natural selection and type 2 diabetes‐associated mortality in an isolated indigenous community in the valley of Oaxaca, southern Mexico. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2016; 162:561-572. [DOI: 10.1002/ajpa.23139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 10/25/2016] [Accepted: 11/15/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Bertis B. Little
- Department of Health Management and Systems SciencesSchool of Public Health and Information Sciences, and Department of AnthropologyUniversity of LouisvilleLouisville Kentucky
| | - Maria Eugenia Peña Reyes
- Posgrado en Antropología FísicaFisica, Escuela National de Antroplogia e HistoriaMexico City Mexico D.F
| | - Robert M. Malina
- Department of Kinesiology and Health EducationThe University of Texas at AustinAustin Texas
- Department of Health Management and Systems SciencesSchool of Public Health and Information Sciences, and Department of Anthropology, University of LouisvilleLouisville Kentucky
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17
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Cadzow M, Merriman TR, Boocock J, Dalbeth N, Stamp LK, Black MA, Visscher PM, Wilcox PL. Lack of direct evidence for natural selection at the candidate thrifty gene locus, PPARGC1A. BMC MEDICAL GENETICS 2016; 17:80. [PMID: 27846814 PMCID: PMC5111290 DOI: 10.1186/s12881-016-0341-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 11/01/2016] [Indexed: 12/12/2022]
Abstract
Background The gene PPARGC1A, in particular the Gly482Ser variant (rs8192678), had been proposed to be subject to natural selection, particularly in recent progenitors of extant Polynesian populations. Reasons include high levels of population differentiation and increased frequencies of the derived type 2 diabetes (T2D) risk 482Ser allele, and association with body mass index (BMI) in a small Tongan population. However, no direct statistical tests for selection have been applied. Methods Using a range of Polynesian populations (Tongan, Māori, Samoan) we re-examined evidence for association between Gly482Ser with T2D and BMI as well as gout. Using also Asian, European, and African 1000 Genome Project samples a range of statistical tests for selection (FST, integrated haplotype score (iHS), cross population extended haplotype homozygosity (XP-EHH), Tajima’s D and Fay and Wu’s H) were conducted on the PPARGC1A locus. Results No statistically significant evidence for association between Gly482Ser and any of BMI, T2D or gout was found. Population differentiation (FST) was smallest between Asian and Pacific populations (New Zealand Māori ≤ 0.35, Samoan ≤ 0.20). When compared to European (New Zealand Māori ≤ 0.40, Samoan ≤ 0.25) or African populations (New Zealand Māori ≤ 0.80, Samoan ≤ 0.66) this differentiation was larger. We did not find any strong evidence for departure from neutral evolution at this locus when applying any of the other statistical tests for selection. However, using the same analytical methods, we found evidence for selection in specific populations at previously identified loci, indicating that lack of selection was the most likely explanation for the lack of evidence of selection in PPARGC1A. Conclusion We conclude that there is no compelling evidence for selection at this locus, and that this gene should not be considered a candidate thrifty gene locus in Pacific populations. High levels of population differentiation at this locus and the reported absence of the derived 482Ser allele in some Melanesian populations, can alternatively be explained by multiple out-of-Africa migrations by ancestral progenitors, and subsequent genetic drift during colonisation of Polynesia. Intermediate 482Ser allele frequencies in extant Western Polynesian populations could therefore be due to recent admixture with Melanesian progenitors. Electronic supplementary material The online version of this article (doi:10.1186/s12881-016-0341-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Murray Cadzow
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand
| | - James Boocock
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Lisa K Stamp
- Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Michael A Black
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand
| | - Peter M Visscher
- Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand.,The Queensland Brain Institute, University of Queensland, Brisbane, Australia.,University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute (TRI), Brisbane, Australia
| | - Phillip L Wilcox
- Department of Biochemistry, University of Otago, Dunedin, New Zealand. .,Virtual Institute of Statistical Genetics (www.visg.co.nz), Dunedin, New Zealand. .,formerly Scion (New Zealand Forest Research Institute Ltd), 49 Sala Street, Rotorua, New Zealand. .,Department of Mathematics and Statistics, University of Otago, Science III Building, 730 Cumberland St, Dunedin, 9016, New Zealand.
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18
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Wang G, Speakman JR. Analysis of Positive Selection at Single Nucleotide Polymorphisms Associated with Body Mass Index Does Not Support the "Thrifty Gene" Hypothesis. Cell Metab 2016; 24:531-541. [PMID: 27667669 DOI: 10.1016/j.cmet.2016.08.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 07/04/2016] [Accepted: 08/23/2016] [Indexed: 12/18/2022]
Abstract
The "thrifty gene hypothesis" suggests genetic susceptibility to obesity arises because of positive selection for alleles that favored fat deposition and survival during famines. We used public domain data to locate signatures of positive selection based on derived allele frequency, genetic diversity, long haplotypes, and differences between populations at SNPs identified in genome-wide association studies (GWASs) for BMI. We used SNPs near the lactase (LCT), SLC24A5, and SLC45A2 genes as positive controls and 120 randomly selected SNPs as negative controls. We found evidence for positive selection (p < 0.05) at nine out of 115 BMI SNPs. However, five of these involved positive selection for the protective allele (i.e., for leanness). The widespread absence of signatures of positive selection, combined with selection favoring leanness at some alleles, does not support the suggestion that obesity provided a selective advantage to survive famines, or any other selective advantage.
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Affiliation(s)
- Guanlin Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, No. 1 West Beichen Road, Chaoyang District, Beijing 100101, PRC; University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing 100049, PRC
| | - John R Speakman
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, No. 1 West Beichen Road, Chaoyang District, Beijing 100101, PRC; Institute of Biological and Environmental Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK.
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19
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Vatsiou AI, Bazin E, Gaggiotti OE. Changes in selective pressures associated with human population expansion may explain metabolic and immune related pathways enriched for signatures of positive selection. BMC Genomics 2016; 17:504. [PMID: 27444955 PMCID: PMC4955149 DOI: 10.1186/s12864-016-2783-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/26/2016] [Indexed: 12/14/2022] Open
Abstract
Background The study of local adaptation processes is a very important research topic in the field of population genomics. There is a particular interest in the study of human populations because they underwent a process of rapid spatial expansion and faced important environmental changes that translated into changes in selective pressures. New mutations may have been selected for in the new environment and previously existing genetic variants may have become detrimental. Immune related genes may have been released from the selective pressure exerted by pathogens in the ancestral environment and new variants may have been positively selected due to pathogens present in the newly colonized habitat. Also, variants that had a selective advantage in past environments may have become deleterious in the modern world due to external stimuli including climatic, dietary and behavioral changes, which could explain the high prevalence of some polygenic diseases such as diabetes and obesity. Results We performed an enrichment analysis to identify gene sets enriched for signals of positive selection in humans. We used two genome scan methods, XPCLR and iHS to detect selection using a dense coverage of SNP markers combined with two gene set enrichment approaches. We identified immune related gene sets that could be involved in the protection against pathogens especially in the African population. We also identified the glycolysis & gluconeogenesis gene set, related to metabolism, which supports the thrifty genotype hypothesis invoked to explain the current high prevalence of diseases such as diabetes and obesity. Extending our analysis to the gene level, we found signals for 23 candidate genes linked to metabolic syndrome, 13 of which are new candidates for positive selection. Conclusions Our study provides a list of genes and gene sets associated with immunity and metabolic syndrome that are enriched for signals of positive selection in three human populations (Europeans, Africans and Asians). Our results highlight differences in the relative importance of pathogens as drivers of local adaptation in different continents and provide new insights into the evolution and high incidence of metabolic syndrome in modern human populations. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2783-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alexandra I Vatsiou
- Laboratoire d'Écologie Alpine (LECA), Univesrity Joseph Fourier, 2233 Rue de la Piscine, 38041, Grenoble, Cedex 9, France. .,Scottish Oceans Institute, East Sands, University of St Andrews, St Andrews, KY16 8LB, Scotland, UK. .,Oh no sequences! Research group, Era7Bioinformatics, Plaza de Campo Verde, 3, 18001, Granada, Spain.
| | - Eric Bazin
- Laboratoire d'Écologie Alpine (LECA), Univesrity Joseph Fourier, 2233 Rue de la Piscine, 38041, Grenoble, Cedex 9, France
| | - Oscar E Gaggiotti
- Laboratoire d'Écologie Alpine (LECA), Univesrity Joseph Fourier, 2233 Rue de la Piscine, 38041, Grenoble, Cedex 9, France.,Scottish Oceans Institute, East Sands, University of St Andrews, St Andrews, KY16 8LB, Scotland, UK
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20
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Fontes-Villalba M, Lindeberg S, Granfeldt Y, Knop FK, Memon AA, Carrera-Bastos P, Picazo Ó, Chanrai M, Sunquist J, Sundquist K, Jönsson T. Palaeolithic diet decreases fasting plasma leptin concentrations more than a diabetes diet in patients with type 2 diabetes: a randomised cross-over trial. Cardiovasc Diabetol 2016; 15:80. [PMID: 27216013 PMCID: PMC4877952 DOI: 10.1186/s12933-016-0398-1] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/13/2016] [Indexed: 12/13/2022] Open
Abstract
Background We have previously shown that a Palaeolithic diet consisting of the typical food groups that our ancestors ate during the Palaeolithic era, improves cardiovascular disease risk factors and glucose control compared to the currently recommended diabetes diet in patients with type 2 diabetes. To elucidate the mechanisms behind these effects, we evaluated fasting plasma concentrations of glucagon, insulin, incretins, ghrelin, C-peptide and adipokines from the same study. Methods In a randomised, open-label, cross-over study, 13 patients with type 2 diabetes were randomly assigned to eat a Palaeolithic diet based on lean meat, fish, fruits, vegetables, root vegetables, eggs and nuts, or a diabetes diet designed in accordance with current diabetes dietary guidelines during two consecutive 3-month periods. The patients were recruited from primary health-care units and included three women and 10 men [age (mean ± SD) 64 ± 6 years; BMI 30 ± 7 kg/m2; diabetes duration 8 ± 5 years; glycated haemoglobin 6.6 ± 0.6 % (57.3 ± 6 mmol/mol)] with unaltered diabetes treatment and stable body weight for 3 months prior to the start of the study. Outcome variables included fasting plasma concentrations of leptin, adiponectin, adipsin, visfatin, resistin, glucagon, insulin, C-peptide, glucose-dependent insulinotropic polypeptide, glucagon-like peptide-1 and ghrelin. Dietary intake was evaluated by use of 4-day weighed food records. Results Seven participants started with the Palaeolithic diet and six with the diabetes diet. The Palaeolithic diet resulted in a large effect size (Cohen’s d = −1.26) at lowering fasting plasma leptin levels compared to the diabetes diet [mean difference (95 % CI), −2.3 (−5.1 to 0.4) ng/ml, p = 0.023]. No statistically significant differences between the diets for the other variables, analysed in this study, were observed. Conclusions Over a 3-month study period, a Palaeolithic diet resulted in reduced fasting plasma leptin levels, but did not change fasting levels of insulin, C-peptide, glucagon, incretins, ghrelin and adipokines compared to the currently recommended diabetes diet. Trial registration: ClinicalTrials.gov NCT00435240 Electronic supplementary material The online version of this article (doi:10.1186/s12933-016-0398-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Maelán Fontes-Villalba
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden. .,, Calle José Betancort, 15, 35530, Teguise-Lanzarote, Spain.
| | - Staffan Lindeberg
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Yvonne Granfeldt
- Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden
| | - Filip K Knop
- Center for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Ashfaque A Memon
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Pedro Carrera-Bastos
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Óscar Picazo
- NutriScience-Education and Consulting, Lda, Lisbon, Portugal
| | | | - Jan Sunquist
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Kristina Sundquist
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Tommy Jönsson
- Clinical Research Centre, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
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Ghirotto S, Tassi F, Barbujani G, Pattini L, Hayward C, Vollenweider P, Bochud M, Rampoldi L, Devuyst O. The Uromodulin Gene Locus Shows Evidence of Pathogen Adaptation through Human Evolution. J Am Soc Nephrol 2016; 27:2983-2996. [PMID: 26966016 DOI: 10.1681/asn.2015070830] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 01/30/2016] [Indexed: 12/15/2022] Open
Abstract
Common variants in the UMOD gene encoding uromodulin, associated with risk of hypertension and CKD in the general population, increase UMOD expression and urinary excretion of uromodulin, causing salt-sensitive hypertension and renal lesions. To determine the effect of selective pressure on variant frequency, we investigated the allelic frequency of the lead UMOD variant rs4293393 in 156 human populations, in eight ancient human genomes, and in primate genomes. The T allele of rs4293393, associated with CKD risk, has high frequency in most modern populations and was the one detected in primate genomes. In contrast, we identified only the derived, C allele in Denisovan and Neanderthal genomes. The distribution of the UMOD ancestral allele did not follow the ancestral susceptibility model observed for variants associated with salt-sensitive hypertension. Instead, the global frequencies of the UMOD alleles significantly correlated with pathogen diversity (bacteria, helminths) and prevalence of antibiotic-resistant urinary tract infections (UTIs). The inverse correlation found between urinary levels of uromodulin and markers of UTIs in the general population substantiates the link between UMOD variants and protection against UTIs. These data strongly suggest that the UMOD ancestral allele, driving higher urinary excretion of uromodulin, has been kept at a high frequency because of its protective effect against UTIs.
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Affiliation(s)
- Silvia Ghirotto
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Francesca Tassi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Guido Barbujani
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Linda Pattini
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Caroline Hayward
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Peter Vollenweider
- Department of Internal Medicine, Institute of Social and Preventive Medicine, Lausanne University Hospital Center, Lausanne, Switzerland
| | - Murielle Bochud
- Department of Internal Medicine, Institute of Social and Preventive Medicine, Lausanne University Hospital Center, Lausanne, Switzerland
| | - Luca Rampoldi
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy; and
| | - Olivier Devuyst
- Institute of Physiology, University of Zurich, Zurich, Switzerland
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22
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Ng J, Trask JS, Smith DG, Kanthaswamy S. Heterospecific SNP diversity in humans and rhesus macaque (Macaca mulatta). J Med Primatol 2015; 44:194-201. [PMID: 25963897 DOI: 10.1111/jmp.12174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Conservation of single nucleotide polymorphisms (SNPs) between human and other primates (i.e., heterospecific SNPs) in candidate genes can be used to assess the utility of those organisms as models for human biomedical research. METHODS A total of 59,691 heterospecific SNPs in 22 rhesus macaques and 20 humans were analyzed for human trait associations and 4207 heterospecific SNPs biallelic in both taxa were compared for genetic variation. RESULTS Variation comparisons at the 4207 SNPs showed that humans were more genetically diverse than rhesus macaques with observed and expected heterozygosities of 0.337 and 0.323 vs. 0.119 and 0.102, and minor allele frequencies of 0.239 and 0.063, respectively. In total, 431 of the 59,691 heterospecific SNPs are reportedly associated with human-specific traits. CONCLUSION While comparisons between human and rhesus macaque genomes are plausible, functional studies of heterospecific SNPs are necessary to determine whether rhesus macaque alleles are associated with the same phenotypes as their corresponding human alleles.
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Affiliation(s)
- Jillian Ng
- Molecular Anthropology Laboratory, Department of Anthropology, University of California, Davis, CA, USA
| | - Jessica Satkoski Trask
- Molecular Anthropology Laboratory, Department of Anthropology, University of California, Davis, CA, USA.,California National Primate Research Center, University of California, Davis, CA, USA
| | - David Glenn Smith
- Molecular Anthropology Laboratory, Department of Anthropology, University of California, Davis, CA, USA.,California National Primate Research Center, University of California, Davis, CA, USA
| | - Sree Kanthaswamy
- Molecular Anthropology Laboratory, Department of Anthropology, University of California, Davis, CA, USA.,California National Primate Research Center, University of California, Davis, CA, USA.,School of Mathematics and Natural Sciences, Arizona State University (ASU) at the West Campus, Glendale, AZ, USA.,Department of Environmental Toxicology, University of California, Davis, CA, USA
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23
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Palstra FP, Heyer E, Austerlitz F. Statistical inference on genetic data reveals the complex demographic history of human populations in central Asia. Mol Biol Evol 2015; 32:1411-24. [PMID: 25678589 DOI: 10.1093/molbev/msv030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The demographic history of modern humans constitutes a combination of expansions, colonizations, contractions, and remigrations. The advent of large scale genetic data combined with statistically refined methods facilitates inference of this complex history. Here we study the demographic history of two genetically admixed ethnic groups in Central Asia, an area characterized by high levels of genetic diversity and a history of recurrent immigration. Using Approximate Bayesian Computation, we infer that the timing of admixture markedly differs between the two groups. Admixture in the traditionally agricultural Tajiks could be dated back to the onset of the Neolithic transition in the region, whereas admixture in Kyrgyz is more recent, and may have involved the westward movement of Turkic peoples. These results are confirmed by a coalescent method that fits an isolation-with-migration model to the genetic data, with both Central Asian groups having received gene flow from the extremities of Eurasia. Interestingly, our analyses also uncover signatures of gene flow from Eastern to Western Eurasia during Paleolithic times. In conclusion, the high genetic diversity currently observed in these two Central Asian peoples most likely reflects the effects of recurrent immigration that likely started before historical times. Conversely, conquests during historical times may have had a relatively limited genetic impact. These results emphasize the need for a better understanding of the genetic consequences of transmission of culture and technological innovations, as well as those of invasions and conquests.
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Affiliation(s)
- Friso P Palstra
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206, Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot, Paris, France
| | - Evelyne Heyer
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206, Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot, Paris, France
| | - Frédéric Austerlitz
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206, Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot, Paris, France
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24
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Aimé C, Heyer E, Austerlitz F. Inference of sex-specific expansion patterns in human populations from Y-chromosome polymorphism. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2015; 157:217-25. [PMID: 25662940 DOI: 10.1002/ajpa.22707] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 01/13/2015] [Indexed: 11/10/2022]
Abstract
Studying the current distribution of genetic diversity in humans has important implications for our understanding of the history of our species. We analyzed a set of linked STR and SNP loci from the paternally inherited Y chromosome to infer the past demography of 55 African and Eurasian populations, using both the parametric and nonparametric coalescent-based methods implemented in the BEAST application. We inferred expansion events in most sedentary farmer populations, while we found constant effective population sizes for both nomadic hunter-gatherers and seminomadic herders. Our results differed, on several aspects, from previous results on mtDNA and autosomal markers. First, we found more recent expansion patterns in Eurasia than in Africa. This discrepancy, substantially stronger than the ones found with the other kind of markers, may result from a lower effective population size for men, which might have made male-transmitted markers more sensitive to the out-of-Africa bottleneck. Second, we found expansion signals only for sedentary farmers but not for nomadic herders in Central Asia, while these signals were found for both kind of populations in this area when using mtDNA or autosomal markers. Expansion signals in this area may result from spatial expansion processes and may have been erased for the Y chromosome among the herders because of restricted male gene flow.
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Affiliation(s)
- Carla Aimé
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206 (Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot), Museum National d'Histoire Naturelle, F-75231, Paris, France
| | - Evelyne Heyer
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206 (Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot), Museum National d'Histoire Naturelle, F-75231, Paris, France
| | - Frédéric Austerlitz
- Laboratoire d'Eco-Anthropologie et Ethnobiologie, UMR 7206 (Muséum National d'Histoire Naturelle-Centre National de la Recherche Scientifique-Université Paris 7 Diderot), Museum National d'Histoire Naturelle, F-75231, Paris, France
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25
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Jönsson T, Memon AA, Sundquist K, Sundquist J, Olsson S, Nalla A, Bauer M, Linse S. Digested wheat gluten inhibits binding between leptin and its receptor. BMC BIOCHEMISTRY 2015; 16:3. [PMID: 25600821 PMCID: PMC4308898 DOI: 10.1186/s12858-015-0032-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 01/12/2015] [Indexed: 12/22/2022]
Abstract
Background Leptin resistance is considered a primary risk factor for obesity. It has been hypothesized that dietary cereal grain protein could cause leptin resistance by preventing leptin from binding to its receptor. Non-degraded dietary wheat protein has been found in human serum at a mean level of 41 ng/mL. Here, we report our findings from testing whether enzymatically digested gluten from wheat prevents leptin from binding to the leptin receptor in vitro. Gluten from wheat was digested with pepsin and trypsin under physiological conditions. Pepsin and trypsin activity was removed from the gluten digest with a 10 kDa spin-filter or by heat treatment at 100°C for 30 min. Binding to the leptin receptor of leptin mixed with gluten digest at a series of concentrations was measured using surface plasmon resonance technology. Results Binding of the gluten digest to the leptin receptor was not detected. Spin-filtered gluten digest inhibited binding of leptin to the leptin receptor, with 50% inhibition at a gluten digest concentration of ~10 ng/mL. Heat-treated gluten digest did not inhibit leptin binding. Conclusions Digested wheat gluten inhibits binding of leptin to the leptin receptor, with half-maximal inhibition at 10 ng/mL. The inhibition is significant at clinically relevant concentrations and could therefore serve as a novel pathway to investigate to understand the molecular basis of leptin resistance, obesity and associated disorders.
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Affiliation(s)
- Tommy Jönsson
- Center for Primary Health Care Research, Lund University/Region Skåne, Skåne University Hospital, Malmö, Sweden.
| | - Ashfaque A Memon
- Center for Primary Health Care Research, Lund University/Region Skåne, Skåne University Hospital, Malmö, Sweden.
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Skåne University Hospital, Malmö, Sweden.
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Skåne University Hospital, Malmö, Sweden.
| | - Stefan Olsson
- Department of Plant and Environmental Science, University of Copenhagen, DK-1871, Frederiksberg C, Denmark.
| | - Amarnadh Nalla
- Institute of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen, Denmark. .,The Danish Diabetes Academy, Odense University Hospital, Odense, Denmark.
| | - Mikael Bauer
- Department of Biochemistry and Structural Biology, Lund University, Lund, Sweden.
| | - Sara Linse
- Department of Biochemistry and Structural Biology, Lund University, Lund, Sweden.
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26
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Musavi Z, Azarpira N, Sangtarash MH, Kordi M, Kazemi K, Geramizadeh B, Malek-Hosseini SA. Polymorphism of Transcription Factor-7-Like 2 (TCF7L2) Gene and New-Onset Diabetes after Liver Transplantation. Int J Organ Transplant Med 2015; 6:14-22. [PMID: 25737773 PMCID: PMC4346459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND New-onset diabetes after transplantation (NODAT) is a serious complication in transplant recipients. Transcription factor-7-like 2 (TCF7L2) is a Wnt signaling-associated transcription factor that plays an important role in β-cell proliferation and insulin secretion. The association between TCF7L2 SNP rs7903146 and NODAT was documented in renal transplant patients. OBJECTIVE To determine the association between TCF7L2 rs7903146 variants and the risk of NODAT after liver transplantation. METHODS This study was conducted on 140 liver transplant recipients who had received tacrolimus-based immunosuppressive drugs. The patients were divided into NODAT (n=70) and non-NODAT (n=70) groups and were genotyped using PCR-RFLP. In addition, 100 normal subjects were considered as the comparison group. RESULTS There was a significant difference (p<0.05) between the two study groups regarding donor and recipient age, recipient body mass index, and recipient fasting plasma glucose before the transplantation. No significant relationship was observed between TCF7L2 rs7903146 genotypes and development of NODAT. No significant difference was also found between the two groups in terms of the tacrolimus and mycophenolate mofetil daily dosage as well as tacrolimus blood level. However, the prednisolone daily dosage was significantly (p=0.01) higher in the NODAT group compared to those without NODAT. The majority of the patients in the NODAT group also had an episode of acute rejection. Furthermore, a significant difference was found between the transplant recipients and the comparison subjects regarding T allele (p<0.001, OR=1.96) and TT genotype (p<0.001, OR=3.47) frequencies. CONCLUSION No correlation was found between TCF7L2 genotypes and development of NODAT. Acute rejection and prednisolone pulse therapy predisposed the susceptible patients to NODAT.
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Affiliation(s)
- Z. Musavi
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Genetic, Sistan and Baluchestan University of Sciences, Zahedan, Iran
| | - N. Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M. H. Sangtarash
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Genetic, Sistan and Baluchestan University of Sciences, Zahedan, Iran
| | - M. Kordi
- Department of Genetic, Sistan and Baluchestan University of Sciences, Zahedan, Iran
| | - K. Kazemi
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - B. Geramizadeh
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Ayub Q, Moutsianas L, Chen Y, Panoutsopoulou K, Colonna V, Pagani L, Prokopenko I, Ritchie GRS, Tyler-Smith C, McCarthy MI, Zeggini E, Xue Y. Revisiting the thrifty gene hypothesis via 65 loci associated with susceptibility to type 2 diabetes. Am J Hum Genet 2014; 94:176-85. [PMID: 24412096 DOI: 10.1016/j.ajhg.2013.12.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 12/10/2013] [Indexed: 12/27/2022] Open
Abstract
We have investigated the evidence for positive selection in samples of African, European, and East Asian ancestry at 65 loci associated with susceptibility to type 2 diabetes (T2D) previously identified through genome-wide association studies. Selection early in human evolutionary history is predicted to lead to ancestral risk alleles shared between populations, whereas late selection would result in population-specific signals at derived risk alleles. By using a wide variety of tests based on the site frequency spectrum, haplotype structure, and population differentiation, we found no global signal of enrichment for positive selection when we considered all T2D risk loci collectively. However, in a locus-by-locus analysis, we found nominal evidence for positive selection at 14 of the loci. Selection favored the protective and risk alleles in similar proportions, rather than the risk alleles specifically as predicted by the thrifty gene hypothesis, and may not be related to influence on diabetes. Overall, we conclude that past positive selection has not been a powerful influence driving the prevalence of T2D risk alleles.
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Affiliation(s)
- Qasim Ayub
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK
| | - Loukas Moutsianas
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Yuan Chen
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK
| | | | - Vincenza Colonna
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK; Institute of Genetics and Biophysics, National Research Council (CNR), 80125 Naples, Italy
| | - Luca Pagani
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK
| | - Inga Prokopenko
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Graham R S Ritchie
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK; European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SH, UK
| | - Chris Tyler-Smith
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK
| | - Mark I McCarthy
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK; Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital, Old Road, Headington, Oxford OX3 7LJ, UK; Oxford NIHR Biomedical Research Centre, Churchill Hospital, Old Road, Headington, Oxford OX3 7LJ, UK
| | - Eleftheria Zeggini
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK
| | - Yali Xue
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1HH, UK.
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Marullo L, El-Sayed Moustafa JS, Prokopenko I. Insights into the genetic susceptibility to type 2 diabetes from genome-wide association studies of glycaemic traits. Curr Diab Rep 2014; 14:551. [PMID: 25344220 DOI: 10.1007/s11892-014-0551-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Over the past 8 years, the genetics of complex traits have benefited from an unprecedented advancement in the identification of common variant loci for diseases such as type 2 diabetes (T2D). The ability to undertake genome-wide association studies in large population-based samples for quantitative glycaemic traits has permitted us to explore the hypothesis that models arising from studies in non-diabetic individuals may reflect mechanisms involved in the pathogenesis of diabetes. Amongst 88 T2D risk and 72 glycaemic trait loci, only 29 are shared and show disproportionate magnitudes of phenotypic effects. Important mechanistic insights have been gained regarding the physiological role of T2D loci in disease predisposition through the elucidation of their contribution to glycaemic trait variability. Further investigation is warranted to define causal variants within these loci, including functional characterisation of associated variants, to dissect their role in disease mechanisms and to enable clinical translation.
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Affiliation(s)
- Letizia Marullo
- Department of Life Sciences and Biotechnology, Genetic Section, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
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Aimé C, Laval G, Patin E, Verdu P, Ségurel L, Chaix R, Hegay T, Quintana-Murci L, Heyer E, Austerlitz F. Human genetic data reveal contrasting demographic patterns between sedentary and nomadic populations that predate the emergence of farming. Mol Biol Evol 2013; 30:2629-44. [PMID: 24063884 DOI: 10.1093/molbev/mst156] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Demographic changes are known to leave footprints on genetic polymorphism. Together with the increased availability of large polymorphism data sets, coalescent-based methods allow inferring the past demography of populations from their present-day patterns of genetic diversity. Here, we analyzed both nuclear (20 noncoding regions) and mitochondrial (HVS-I) resequencing data to infer the demographic history of 66 African and Eurasian human populations presenting contrasting lifestyles (nomadic hunter-gatherers, nomadic herders, and sedentary farmers). This allowed us to investigate the relationship between lifestyle and demography and to address the long-standing debate about the chronology of demographic expansions and the Neolithic transition. In Africa, we inferred expansion events for farmers, but constant population sizes or contraction events for hunter-gatherers. In Eurasia, we inferred higher expansion rates for farmers than herders with HVS-I data, except in Central Asia and Korea. Although isolation and admixture processes could have impacted our demographic inferences, these processes alone seem unlikely to explain the contrasted demographic histories inferred in populations with different lifestyles. The small expansion rates or constant population sizes inferred for herders and hunter-gatherers may thus result from constraints linked to nomadism. However, autosomal data revealed contraction events for two sedentary populations in Eurasia, which may be caused by founder effects. Finally, the inferred expansions likely predated the emergence of agriculture and herding. This suggests that human populations could have started to expand in Paleolithic times, and that strong Paleolithic expansions in some populations may have ultimately favored their shift toward agriculture during the Neolithic.
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Affiliation(s)
- Carla Aimé
- Laboratoire Eco-Anthropologie et Ethnobiologie, UMR 7206, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Université Paris 7 Diderot, Paris, France
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