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1.
Genes (Basel) ; 14(8)2023 08 12.
Article in English | MEDLINE | ID: mdl-37628665

ABSTRACT

Mitochondrial DNA (mtDNA) has been used for decades as a predominant tool in population genetics and as a valuable addition to forensic genetic research, owing to its unique maternal inheritance pattern that enables the tracing of individuals along the maternal lineage across numerous generations. The dynamic interplay between evolutionary forces, primarily genetic drift, bottlenecks, and the founder effect, can exert significant influence on genetic profiles. Consequently, the Adriatic islands have accumulated a subset of lineages that exhibits remarkable absence or rarity within other European populations. This distinctive genetic composition underscores the islands' potential as a significant resource in phylogenetic research, with implications reaching beyond regional boundaries to contribute to a global understanding. In the initial attempt to expand the mitochondrial forensic database of the Croatian population with haplotypes from small isolated communities, we sequenced mitogenomes of rare haplogroups from different Croatian island and mainland populations using next-generation sequencing (NGS). In the next step and based on the obtained results, we refined the global phylogeny of haplogroup N1a, HV2, and X by analyzing rare haplotypes, which are absent from the current phylogenetic tree. The trees were based on 16 novel and 52 previously published samples, revealing completely novel branches in the X and HV2 haplogroups and a new European cluster in the ancestral N1a variant, previously believed to be an exclusively African-Asian haplogroup. The research emphasizes the importance of investigating geographically isolated populations and their unique characteristics within a global context.


Subject(s)
Genome, Mitochondrial , Humans , Phylogeny , Croatia , Genome, Mitochondrial/genetics , Mitochondria/genetics , DNA, Mitochondrial/genetics
2.
Ann Hum Biol ; 50(1): 332-340, 2023 Feb.
Article in English | MEDLINE | ID: mdl-37439599

ABSTRACT

BACKGROUND: Every third child in Croatia is classed as overweight or obese. Infant growth can represent early warning signs for obesity. AIM: To detect early risk factors for obesity by investigating infant size and early growth trajectories and their association with maternal lifestyle and breastfeeding. SUBJECTS AND METHODS: Ninety-eight mother-child pairs from the Croatian Islands' Birth Cohort Study (CRIBS) cohort were included in the study. Data were collected from questionnaires and medical records. Growth data were converted to Z-scores using World Health Organisation (WHO) standards and used as the primary outcome. RESULTS: Z-score trajectories in the first year of life were in line with WHO standards. A direct link between infant size and maternal socioeconomic status (SES) or breastfeeding was not detected. However, child weight gain in the first 6 months was associated with maternal body mass index (BMI) before pregnancy (p < 0.01). A positive association was also established between breastfeeding and maternal SES and mothers that report an unhealthy diet have heavier children (p < 0.05, respectively). CONCLUSION: Infant size and early growth in Croatia is in line with WHO standards and risk factors for obesity development were detectable in the first year of life, but not highly pronounced. However, more effective BMI monitoring and promotion of a healthy diet and lifestyle of women before and during pregnancy is needed.


Subject(s)
Breast Feeding , Obesity , Pregnancy , Infant , Humans , Female , Cohort Studies , Obesity/etiology , Overweight/complications , Body Mass Index , Life Style
3.
Croat Med J ; 63(3): 231-243, 2022 Jun 22.
Article in English | MEDLINE | ID: mdl-35722692

ABSTRACT

AIM: To use the method of meta-analysis to assess the influence of island population isolation on the sub-structuring of the Croatian population, as well as the influence of regional population groups on the sub-structuring of the Southeastern European population with regard to basic population genetic statistical parameters calculated by using STR locus analysis. METHODS: Bio-statistical analyses were performed for 2877 unrelated participants of both sexes from Southeastern Europe. Nine autosomal STR loci (D3S1358, vWA, FGA, TH01, TPOX, CSF1PO, D5S818, D13S317, and D7S82) were analyzed by using standard F-statistics and population structure analysis (Structure software). RESULTS: Genetic differentiation of Croatian subpopulations assessed with the FST method was higher at the level of the Croatian population (0.005) than at the level of Southeastern Europe (0.002). The island of Vis showed the most pronounced separation in the Croatian population, and Albanians from Kosovo in the population of Southeast Europe, followed by Croatia, Bosnia and Herzegovina, and Hungary. CONCLUSION: The higher structure of Croatian subpopulations in relation to Southeastern Europe suggest a certain degree of genetic isolation, most likely due to the influence of endogamy within rural island populations.


Subject(s)
DNA Fingerprinting , Genetics, Population , Bosnia and Herzegovina , Croatia , Europe , Gene Frequency , Humans , Microsatellite Repeats
4.
Croat Med J ; 63(3): 244-256, 2022 Jun 22.
Article in English | MEDLINE | ID: mdl-35722693

ABSTRACT

AIM: To investigate the influence of specific intrapopulation genetic structures on interpopulation relationships. Special focus was the influence of island population isolation on the substructuring of the Croatian population, and the influence of regional population groups on the substructuring of Southeast European populations. METHODS: Autosomal short tandem repeat (STR) loci were analyzed by using four forensic parameters: matching probability (PM), power of discrimination (PD), power of exclusion (PE), and polymorphic information content (PIC) on a sample of 2877 unrelated participants of both sexes. A sample set comprising 590 participants was analyzed for the first time, and 2287 participants were included from previous studies. The analysis was performed with PowerStats v. 1.2. RESULTS: The analysis of forensic parameters for all nine loci in the Croatian subpopulations showed the largest deviations in the populations of the islands of Korcula and Hvar. The smallest deviations were found in the mainland population. As for Southeast European populations, the largest deviations were found in the population of North Macedonia, followed by Romania, Albanians from Kosovo, and Montenegro, while the smallest deviations were found in the population of Hungary. CONCLUSION: The comparison of forensic parameters between different subpopulations of Croatia and Southeast Europe indicates that the isolation of individual Croatian subpopulations and rare alleles in their gene pool affect the values of forensic parameters. Specific features of (sub)populations should be taken into account for appropriate sampling of the total population when creating a DNA database of STR markers.


Subject(s)
Genetics, Population , Polymorphism, Genetic , Europe , Female , Gene Frequency , Humans , Male , Microsatellite Repeats/genetics
5.
Croat Med J ; 63(3): 273-286, 2022 Jun 22.
Article in English | MEDLINE | ID: mdl-35722696

ABSTRACT

AIM: To analyze an additional set of ˝Y-chromosome genetic markers to acquire a more detailed insight into the diversity of the Croatian population. METHODS: A total of 518 Yfiler Plus profiles were genotyped. Allele frequencies, haplotype frequencies, and haplotype diversity were calculated by using the STRAF software v. 2.0.4. Genetic distances were quantified by Rst with AMOVA online tool from the YHRD. The evolutionary history was inferred with the neighbor-joining method of phylogenetic tree construction in the MEGAX software. Whit Athey's Haplogroup Predictor v. 5 was used for additional comparison with regional and other European populations. RESULTS: A total of 507 haplotypes were used for genetic STR analysis. An interpopulation study on 17 Y-STR markers showed the lowest genetic diversity between the Croatian and Bosnian-Herzegovinian populations and the highest between the Croatian and Irish populations. Additional interpopulation comparison with the original 27 Y-STR markers (for the population with available data) was also performed. A total of 518 haplotypes were used in the determination of haplogroup diversity. Haplogroup I with its sublineage I2a expressed the highest prevalence. The second most prevalent haplogroup was R, with its major sublineage R1a, except for the subpopulation of Hvar, where E1b1b was the second most prevalent haplogroup. Rare haplogroups also confirmed in this study were L, T, and Q. G1 was detected for the first time in the Croatian population. CONCLUSION: We obtained a new insight into the differences between examined subpopulations of Croatia and their possible (dis)similarities with neighboring and distant populations.


Subject(s)
Chromosomes, Human, Y , Genetics, Population , Chromosomes, Human, Y/genetics , Croatia , Genetic Variation/genetics , Haplotypes/genetics , Humans , Microsatellite Repeats/genetics , Phylogeny
6.
Anthropol Anz ; 79(4): 361-397, 2022 Aug 25.
Article in English | MEDLINE | ID: mdl-35607797

ABSTRACT

The paper presents an overview of the 50-year long bioanthropological research of the Hvar islanders and depicts the maternal and paternal genetic landscape of the Hvar population (mtDNA and NRY lineages) in more detail. MtDNA haplogroups were determined in 169 and NRY haplogroups in 407 autochthonous individuals from the Hvar Island. The relatively high level of diversity of mtDNA and NRY lineages has been observed, however with interesting deviations from both the maternal (F1b1 lineage) and paternal (Q2a1a lineage) perspective. Additionally, population substructuring revealed differences between Hvar communities (east-west substructuring), in line with the ethnohistoric background and observed migration patterns on the island. Genetic analysis of the Hvar islanders presents a highlight of the 50-year long anthropological research on this island and offers insight into the current genetic structure of Dalmatia, Croatia, shaped by dynamic and diverse population movements throughout history.


Subject(s)
Anthropology , DNA, Mitochondrial , Croatia , DNA, Mitochondrial/genetics , Genetic Variation/genetics , Genetics, Population , Haplotypes/genetics , Humans
7.
Ann Hum Biol ; 49(2): 91-99, 2022 Mar.
Article in English | MEDLINE | ID: mdl-35604837

ABSTRACT

BACKGROUND: High pre-pregnancy body mass index (BMI) and excessive gestational weight gain (GWG) are significant risk factors for maternal and neonatal health. AIM: To assess pre-pregnancy BMI and GWG during pregnancy and their association with different maternal and neonatal characteristics in the transitional Mediterranean population from the Eastern Adriatic islands. SUBJECTS AND METHODS: Two hundred and sixty-two mother-child dyads from the CRoatian Islands' Birth Cohort Study (CRIBS) were included in the study. Chi-square test, ANOVA, and regression analysis were used to test the association between selected characteristics. RESULTS: In total, 22% of women entered pregnancy as overweight/obese and 46.6% had excessive GWG. Pre-pregnancy overweight and obesity were significantly associated with elevated triglycerides uric acid levels, and decreased HDL cholesterol in pregnancy. Excessive GWG was associated with elevated fibrinogen and lipoprotein A levels. Women with high pre-pregnancy BMI and GWG values were more likely to give birth to babies that were large for gestational age (LGA), additionally confirmed in the multiple logistic regression model. CONCLUSION: High maternal pre-pregnancy BMI and excessive GWG were both significantly associated with deviated biochemical parameters and neonatal size. More careful monitoring of maternal nutritional status can lead to better pre- and perinatal maternal healthcare.


Subject(s)
Overweight , Reproductive Health , Body Mass Index , Cohort Studies , Female , Humans , Infant, Newborn , National Academies of Science, Engineering, and Medicine, U.S., Health and Medicine Division , Obesity/epidemiology , Obesity/etiology , Overweight/epidemiology , Pregnancy , Pregnancy Outcome/epidemiology , United States , Weight Gain
8.
Nutrients ; 13(12)2021 Dec 20.
Article in English | MEDLINE | ID: mdl-34960116

ABSTRACT

Previous studies have confirmed the beneficial effect of a Mediterranean diet in mitigating health issues related to cardiovascular disease, diabetes and obesity. However, rapid changes in the traditional way of life and the "westernization" of the diet in Mediterranean populations, especially in younger generations, has led to progressive abandonment of healthy dietary patterns. In order to investigate the generation shift in dietary patterns and lifestyle habits in the Mediterranean part of Croatia, we compared two cohorts of 610 women (266 pregnant and 344 non-pregnant) from the same region, but from different age groups. The MDSS score was derived from food frequency questionnaires. The results showed that the young, reproductively active generation (pregnant women) in Dalmatia, Croatia, although having a higher education and socioeconomic status, exhibits a more adverse eating behaviour (lower adherence to the Mediterranean diet) and lifestyle (excessive smoking in pregnancy) than the older population from the same region. Lower MDSS scores across aggregated age groups in both cohorts showed significant association with higher blood lipid levels and higher smoking frequency. In conclusion, Mediterranean diet adherence is associated with biological markers (age, lipid profile) and lifestyle (smoking) in our study, with a more adverse trend observed in the younger generation.


Subject(s)
Diet, Mediterranean/statistics & numerical data , Health Status , Life Style , Adult , Age Factors , Aged , Aged, 80 and over , Biomarkers/blood , Body Mass Index , Cardiovascular Diseases/epidemiology , Cohort Studies , Croatia/epidemiology , Exercise , Feeding Behavior , Female , Humans , Lipids/blood , Middle Aged , Pregnancy , Smoking/epidemiology , Social Class , Surveys and Questionnaires , Young Adult
9.
Health Care Women Int ; 42(12): 1358-1378, 2021 12.
Article in English | MEDLINE | ID: mdl-33900158

ABSTRACT

The aims were to investigate determinants of the quality of life (QoL) of pregnant women. Total of 302 healthy women 18 to 28 weeks of gestation participated in prospective study. WHOQOL-bref, Multidimensional Health Locus of Control scales, Edinburgh Postnatal Depression Scale, and the perceived stress appraisals were administered. Various patterns of predictors for four domains of QoL were identified, for psychological (42% variance explained), social relationship (29%), environmental (29%) and physical health (25%). Depression and hope, together with the extent to which one's health is influenced by powerful other or chance should be targeted in health promotion strategies during pregnancy.


Subject(s)
Infant Equipment , Quality of Life , Birth Cohort , Cohort Studies , Depression/epidemiology , Female , Humans , Internal-External Control , Islands , Pregnancy , Pregnant Women , Prospective Studies , Surveys and Questionnaires
10.
Nutrients ; 12(8)2020 Jul 22.
Article in English | MEDLINE | ID: mdl-32708050

ABSTRACT

Maternal nutrition and lifestyle in pregnancy are important modifiable factors for both maternal and offspring's health. Although the Mediterranean diet has beneficial effects on health, recent studies have shown low adherence in Europe. This study aimed to assess the Mediterranean diet adherence in 266 pregnant women from Dalmatia, Croatia and to investigate their lifestyle habits and regional differences. Adherence to the Mediterranean diet was assessed through two Mediterranean diet scores. Differences in maternal characteristics (diet, education, income, parity, smoking, pre-pregnancy body mass index (BMI), physical activity, contraception) with regards to location and dietary habits were analyzed using the non-parametric Mann-Whitney U test. The machine learning approach was used to reveal other potential non-linear relationships. The results showed that adherence to the Mediterranean diet was low to moderate among the pregnant women in this study, with no significant mainland-island differences. The highest adherence was observed among wealthier women with generally healthier lifestyle choices. The most significant mainland-island differences were observed for lifestyle and socioeconomic factors (income, education, physical activity). The machine learning approach confirmed the findings of the conventional statistical method. We can conclude that adverse socioeconomic and lifestyle conditions were more pronounced in the island population, which, together with the observed non-Mediterranean dietary pattern, calls for more effective intervention strategies.


Subject(s)
Diet, Mediterranean , Life Style , Maternal Nutritional Physiological Phenomena , Adult , Body Mass Index , Cohort Studies , Croatia , Diet, Healthy , Exercise , Female , Follow-Up Studies , Health Behavior , Humans , Nutrition Assessment , Patient Compliance , Pregnancy , Pregnant Women , Socioeconomic Factors , Surveys and Questionnaires
11.
Sci Total Environ ; 683: 29-36, 2019 Sep 15.
Article in English | MEDLINE | ID: mdl-31129329

ABSTRACT

BACKGROUND: Exposure to perfluoroalkyl substances (PFAS), ubiquitous environmental contaminants, may be related to cardiometabolic diseases in adults. Studies in European populations to examine the association of PFAS exposure and comprehensive cardiometabolic traits and metabolic syndrome (MetS) are limited. METHODS: In this pilot cross-sectional study of a well-characterized adult population of the island of Hvar, situated off the eastern Adriatic coast of Croatia, we measured PFAS concentrations in plasma samples collected during 2007-2008 and examined their cross-sectional associations with cardiometabolic traits and MetS after adjustment of covariates (n = 122). PFAS investigated in this study included perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorohexane sulfonic acid (PFHxS), and perfluorononanoic acid (PFNA). RESULTS: The geometric mean (range) was 8.91 (2.36, 33.67) ng/mL for PFOS, 2.87 (1.03, 8.02) ng/mL for PFOA, 0.77 (0.25, 2.40) ng/mL for PFHxS, and 1.29 (0.48, 3.46) ng/mL for PFNA, with frequency of detection at 100%, 100%, 95.9%, and 100%, respectively. PFOS, PFOA, and PFNA concentrations were positively associated with the risk of MetS as defined by the Adult Treatment Panel III (ATP III) criteria, with estimated odds ratios and 95% confidence intervals at 1.89 (0.93, 3.86), 2.19 (0.88, 5.44), and 2.95 (1.12, 7.80), respectively, with only PFNA reaching statistical significance. PFNA concentrations were associated with increased risk of overweight or obesity. CONCLUSIONS: Background exposure to PFOS, PFOA, and PFNA was marginally associated with increased risk of MetS in this small study, and these results should be confirmed with a larger sample size and longitudinal follow-up.


Subject(s)
Blood Glucose/analysis , Blood Pressure , Cholesterol/blood , Environmental Pollutants/blood , Fluorocarbons/blood , Waist Circumference , Adult , Croatia , Cross-Sectional Studies , Female , Humans , Male , Metabolic Syndrome/physiopathology , Middle Aged , Pilot Projects
12.
Am J Hum Biol ; 28(6): 837-845, 2016 11.
Article in English | MEDLINE | ID: mdl-27279290

ABSTRACT

OBJECTIVES: The research objective of this study is to enlarge and deepen the Y chromosome research on the Croatian population and enable additional insights into the population diversity and historic events that shaped the current genetic landscape of Croatia and Southeastern Europe (SEE). MATERIALS AND METHODS: A high-resolution phylogenetic and phylogeographic analysis of 66 biallelic (SNPs) and 17 microsatellite (STRs) markers of the Y chromosome was performed using 720 Croatian samples. The obtained results were placed in a wider European context by comparison with ∼4450 samples from a number of other European populations. RESULTS: A high diversity of haplogroups was observed in the overall Croatian sample, and all typical European Y chromosome haplogroups with corresponding clinal patterns were observed. Three distinct genetic signals were identifiable in the Croatian paternal gene pool - I2a1b-M423, R1a1a1b1a*-M558, and E1b1b1a1b1a-V13 haplogroups. DISCUSSION: The analyses of the dominant and autochthonous I2a1b-M423 lineage (>30%) suggest that SEE had a significant role in the Upper Paleolithic, the R1a1a1b1a*-M558 lineage (19%) represents a signal from present day Slavic populations of Central Europe in the Croatian population, and the phylogeography of the E1b1b1a1b1a-V13 clade (around 9%) implies cultural diffusion of agriculture into Europe via the Balkan Peninsula. Am. J. Hum. Biol., 2016. © 2016 Wiley Periodicals, Inc. Am. J. Hum. Biol. 28:837-845, 2016. © 2016Wiley Periodicals, Inc.


Subject(s)
Chromosomes, Human, Y/genetics , Gene Pool , Genetic Variation , Phylogeny , Croatia , Humans , Islands , Male
13.
Coll Antropol ; 40(3): 195-8, 2016 09.
Article in English | MEDLINE | ID: mdl-29139639

ABSTRACT

The aim of this preliminary study is to analyze genetic specificity of Kosovo Albanians comparing with neighboring populations using new genetic tool - MEDISCOPE gene chip, to investigate the feasibility of this approach. We collected 37 DNA samples (9 Croats, 17 Albanians from Croatia and 11 Albanians from Kosovo) from unrelated males born in Croatia and Kosovo. Additionally, samples were expanded with female individuals and mtDNA analysis included a total of 61 samples (15 Croats, 23 Albanians from Croatia and 23 Albanians from Kosovo). This pilot study suggests that the usage of the MEDISCOPE chip could be recognized as an efficient tool within recognition of the population genetic specificity even within extremely small sample size.


Subject(s)
Genetic Variation/genetics , Genetics, Population/methods , Oligonucleotide Array Sequence Analysis/methods , Chromosomes, Human, Y/genetics , Croatia , DNA, Mitochondrial/genetics , Female , Genetic Markers/genetics , Humans , Kosovo , Male , Pilot Projects , White People/genetics
14.
Anthropol Anz ; 72(3): 321-34, 2015.
Article in English | MEDLINE | ID: mdl-26244830

ABSTRACT

The European Roma represent a transnational mosaic of minority population groups with different migration histories and contrasting experiences in their interactions with majority populations across the European continent. Although historical genetic contributions of European lineages to the Roma pool were investigated before, the extent of contemporary genetic admixture between Bayash Roma and non-Romani majority population remains elusive. The aim of this study was to assess the genetic structure of the Bayash Roma population from northwestern Croatia and the general Croatian population and to investigate the extent of admixture between them. A set of genetic data from two original studies (100 Bayash Roma from northwestern Croatia and 195 individuals from the general Croatian population) was analyzed by Bayesian clustering implemented in STRUCTURE software. By re-analyzing published data we intended to focus for the first time on genetic differentiation and structure and in doing so we clearly pointed to the importance of considering social phenomena in understanding genetic structuring. Our results demonstrated that two population clusters best explain the genetic structure, which is consistent with social exclusion of Roma and the demographic history of Bayash Roma who have settled in NW Croatia only about 150 years ago and mostly applied rules of endogamy. The presence of admixture was revealed, while the percentage of non-Croatian individuals in general Croatian population was approximately twofold higher than the percentage of non-Romani individuals in Roma population corroborating the presence of ethnomimicry in Roma.


Subject(s)
Roma/genetics , White People/genetics , Bayes Theorem , Cluster Analysis , Croatia/epidemiology , Genetics, Population , Humans , Models, Statistical
15.
Pediatr Endocrinol Rev ; 12(3): 323-32, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25962211

ABSTRACT

Twenty-five scientists met at Aschauhof, Altenhof, Germany, to discuss various aspects of the complex network of modern health screening, focusing on current scientific topics including medical sciences, human biology, and mathematics; on problems in implementing these results at the practical level of physicians, nurses, technicians, and engineers; and the level of administrative and political decisions. Whereas major scientific advancements have been published in the understanding and the bio-statistical evaluation of anthropometric screening parameters such as serial measurements of height and weight for preventive medical check-ups, BMI screening and surveillance in schools, etc., the implementation of these advancements into current health screening concepts, strategies and decision-making is poor. Fear of discrimination, misperception of body image, behavioural responses and political concerns, meanwhile dominate and negatively interfere with the implementation of recent scientific results into public health screening concepts and practices.


Subject(s)
Growth , Health , Mass Screening , Adolescent , Adolescent Development , Child , Child, Preschool , Germany , Growth Charts , Growth Disorders/diagnosis , Growth Disorders/epidemiology , Growth Disorders/etiology , Humans , Infant , Infant, Newborn , Mass Screening/methods , Mass Screening/trends , Obesity/diagnosis , Obesity/epidemiology , Obesity/etiology
16.
Coll Antropol ; 39(2): 401-9, 2015 Jun.
Article in English | MEDLINE | ID: mdl-26753457

ABSTRACT

The objective of the study was to examine the association between fish and shellfish intake and diabetes in an island population, and the design of the study was Cross-sectional. Two independent population-based field surveys were conducted in Hvar Island of the eastern Adriatic coast of Croatia in May 2007 and May 2008, with a total of 1,379 adult participants. In multivariable logistic regression models, total fish intake was positively associated with diabetes prevalence in the total population (OR(Q4 vs. Q1) = 1.64; 95% CI = 1.01-2.66; p-trend = 0.09). Oily fish intake also exhibited a positive association with diabetes prevalence in the total population (OR(Q4 vs. Q1) = 2.22; 95% CI = 1.35-3.64; p-trend = 0.01) and in analyses stratified by body mass index, males and those with a high waist circumference. The study suggests an association between oily fish intake and diabetes in the population of the Hvar Island in Croatia. Longitudinal studies incorporating measures of persistent organic pollutants and local cooking practices are warranted to identify factors in fatty fish that may influence the development or persistence of diabetes.


Subject(s)
Diabetes Mellitus/etiology , Diet , Seafood , Shellfish , Adult , Aged , Croatia , Female , Humans , Male , Middle Aged , Risk Factors
17.
Ann Hum Genet ; 78(3): 178-94, 2014 May.
Article in English | MEDLINE | ID: mdl-24621318

ABSTRACT

High mtDNA variation in Southeastern Europe (SEE) is a reflection of the turbulent and complex demographic history of this area, influenced by gene flow from various parts of Eurasia and a long history of intermixing. Our results of 1035 samples (488 from Croatia, 239 from Bosnia and 130 from Herzegovina, reported earlier, and 97 Slovenians and 81 individuals from Zumberak, reported here for the first time) show that the SEE maternal genetic diversity fits within a broader European maternal genetic landscape. The study also shows that the population of Zumberak, located in the continental part of Croatia, developed some unique mtDNA haplotypes and elevated haplogroup frequencies due to distinctive demographic history and can be considered a moderate genetic isolate. We also report seven samples from the Bosnian population and one Herzegovinian sample designated as X2* individuals that could not be assigned to any of its sublineages (X2a'o) according to the existing X2 phylogeny. In an attempt to clarify the phylogeny of our X2 samples, their mitochondrial DNA has been completely sequenced. We suppose that these lineages are signs of local microdifferentiation processes that occurred in the recent demographic past in this area and could possibly be marked as SEE-specific X2 sublineages.


Subject(s)
DNA, Mitochondrial/genetics , Gene Flow/genetics , Phylogeny , Analysis of Variance , Base Sequence , Genetic Variation , Genotype , Haplotypes/genetics , Humans , Molecular Sequence Data , Polymerase Chain Reaction , Sequence Analysis, DNA , Yugoslavia/ethnology
18.
J Gerontol A Biol Sci Med Sci ; 69(7): 779-89, 2014 Jul.
Article in English | MEDLINE | ID: mdl-24325898

ABSTRACT

Fine structural details of glycans attached to the conserved N-glycosylation site significantly not only affect function of individual immunoglobulin G (IgG) molecules but also mediate inflammation at the systemic level. By analyzing IgG glycosylation in 5,117 individuals from four European populations, we have revealed very complex patterns of changes in IgG glycosylation with age. Several IgG glycans (including FA2B, FA2G2, and FA2BG2) changed considerably with age and the combination of these three glycans can explain up to 58% of variance in chronological age, significantly more than other markers of biological age like telomere lengths. The remaining variance in these glycans strongly correlated with physiological parameters associated with biological age. Thus, IgG glycosylation appears to be closely linked with both chronological and biological ages. Considering the important role of IgG glycans in inflammation, and because the observed changes with age promote inflammation, changes in IgG glycosylation also seem to represent a factor contributing to aging. SIGNIFICANCE STATEMENT: Glycosylation is the key posttranslational mechanism that regulates function of immunoglobulins, with multiple systemic repercussions to the immune system. Our study of IgG glycosylation in 5,117 individuals from four European populations has revealed very extensive and complex changes in IgG glycosylation with age. The combined index composed of only three glycans explained up to 58% of variance in age, considerably more than other biomarkers of age like telomere lengths. The remaining variance in these glycans strongly correlated with physiological parameters associated with biological age; thus, IgG glycosylation appears to be closely linked with both chronological and biological ages. The ability to measure human biological aging using molecular profiling has practical applications for diverse fields such as disease prevention and treatment, or forensics.


Subject(s)
Aging/metabolism , Immunoglobulin G/chemistry , Immunoglobulin G/metabolism , Polysaccharides/chemistry , Polysaccharides/metabolism , Adolescent , Adult , Aged , Aged, 80 and over , Aging/immunology , Biomarkers/metabolism , Cohort Studies , Croatia , Female , Glycosylation , Humans , Inflammation Mediators/chemistry , Inflammation Mediators/metabolism , Longevity/physiology , Male , Middle Aged , Models, Biological , Protein Processing, Post-Translational , Scotland , United Kingdom , Young Adult
19.
Coll Antropol ; 37(2): 335-42, 2013 Jun.
Article in English | MEDLINE | ID: mdl-23940972

ABSTRACT

Adriatic islanders have a high prevalence of metabolic syndrome (MetS) although they have traditionally practiced an active lifestyle and adhered to a Mediterranean diet. We performed a cross-sectional study to identify dietary patterns in a sample of 1442 adults from the island of Hvar, and determined whether MetS and its components: waist-circumference, serum triglycerides, fasting plasma glucose, HDL-cholesterol, and blood pressure, were related to an altered pattern of the traditional Mediterranean diet. Dietary intake was assessed by a food frequency questionnaire. MetS was defined using the International Diabetes Federation criteria. Our study showed that dietary patterns in this population have diversified from the traditional diet. Principal component analysis identified three major patterns. The meat, alcohol, and fish pattern (MAFp), sweets, grains, and fats pattern (SGFp), and an olive-oil, vegetables, and fruits pattern (OVFp) explained 30.6% of total dietary variance. The MAFp associated significantly with MetS (p = 0.027) and high plasma glucose (p = 0.006).


Subject(s)
Diet, Mediterranean/ethnology , Feeding Behavior/ethnology , Metabolic Syndrome/ethnology , Metabolic Syndrome/prevention & control , Adult , Aged , Aged, 80 and over , Croatia , Cross-Sectional Studies , Female , Humans , Islands , Male , Middle Aged , Prevalence , Young Adult
20.
Obesity (Silver Spring) ; 21(12): E745-54, 2013 Dec.
Article in English | MEDLINE | ID: mdl-23512735

ABSTRACT

OBJECTIVE: To provide a quantitative map of relationships between metabolic traits, genome-wide association studies (GWAS) variants, metabolic syndrome (MetS), and metabolic diseases through factor analysis and structural equation modeling (SEM). DESIGN AND METHODS: Cross-sectional data were collected on 1,300 individuals from an eastern Adriatic Croatian island, including 14 anthropometric and biochemical traits, and diagnoses of type 2 diabetes, coronary heart disease, gout, kidney disease, and stroke. MetS was defined based on Adult Treatment Panel III criteria. Forty widely replicated GWAS variants were genotyped. Correlated quantitative traits were reduced through factor analysis; relationships between factors, genetic variants, MetS, and metabolic diseases were determined through SEM. RESULTS: MetS was associated with obesity (P < 0.0001), dyslipidemia (P < 0.0001), glycated hemoglobin (HbA1c; P = 0.0013), hypertension (P < 0.0001), and hyperuricemia (P < 0.0001). Of metabolic diseases, MetS was associated with gout (P = 0.024), coronary heart disease was associated with HbA1c (P < 0.0001), and type 2 diabetes was associated with HbA1c (P < 0.0001) and obesity (P = 0.008). Eleven GWAS variants predicted metabolic variables, MetS, and metabolic diseases. Notably, rs7100623 in HHEX/IDE was associated with HbA1c (ß = 0.03; P < 0.0001) and type 2 diabetes (ß = 0.326; P = 0.0002), underscoring substantial impact on glucose control. CONCLUSIONS: Although MetS was associated with obesity, dyslipidemia, glucose control, hypertension, and hyperuricemia, limited ability of MetS to indicate metabolic disease risk is suggested.


Subject(s)
Genome-Wide Association Study , Metabolic Syndrome/epidemiology , Metabolic Syndrome/genetics , Adolescent , Adult , Aged , Aged, 80 and over , Blood Pressure , Comorbidity , Cross-Sectional Studies , Dyslipidemias/epidemiology , Female , Genotype , Glycated Hemoglobin/metabolism , Humans , Hypertension/epidemiology , Hyperuricemia/epidemiology , Male , Middle Aged , Multivariate Analysis , Obesity/epidemiology , Phenotype , Regression Analysis , Risk Factors , Young Adult
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