@article {10805, title = {Investigation of the link between PROP taste perception and vegetables consumption using FAOSTAT data.}, journal = {Int J Food Sci Nutr}, year = {2018}, month = {2018 Oct 10}, pages = {1-7}, abstract = {

In this work we investigated, in populations located in Central Asia, the relationship between PROP taste perception and vegetables liking and consumption using FAOSTAT dataset. Collected data were analysed using distance matrices, Mantel test and Pearson correlation. Populations showing similar ability in tasting PROP bitterness are more similar as respect to vegetable consumption (r = 0.63, p-value = .05). Moreover, a significant negative correlation was found between the percentage of Non Taster (NT) in different countries and the percentage of vegetable consumption (r = -0.87, p-value = .02), while a significant positive correlation emerged between the percentage of Super Taster (ST) and the percentage of vegetable liking (r = 0.87, p-value = .02). In our work we showed that differences in bitter perception among populations contributes to differences in vegetable liking and vegetable consumption. More in detail, populations with higher percentage of ST consume more vegetables than population where the majority of individuals are NT.

}, issn = {1465-3478}, doi = {10.1080/09637486.2018.1519527}, author = {Mezzavilla, Massimo and Notarangelo, Michela and Concas, Maria Pina and Catamo, Eulalia and Gasparini, Paolo and Grillotti, Maria Gemma and Robino, Antonietta} } @article {7771, title = {Increased rate of deleterious variants in long runs of homozygosity of an inbred population from Qatar.}, journal = {Hum Hered}, volume = {79}, year = {2015}, month = {2015}, pages = {14-9}, abstract = {

OBJECTIVE: The aim of this study is to evaluate the fraction of putatively deleterious variants within genomic runs of homozygosity (ROH) regions in an inbred and selected cohort of Qatari individuals.

METHODS: High-density SNP array analysis was performed in 36 individuals, and for 14 of them whole-exome sequencing (WES) was also carried out.

RESULTS: In all individuals, regions characterized by a high (hotspot) or low (coldspot) degree of homozygosity in all the analysed individuals were mapped, and the most frequent hotspot regions were selected. WES data were exploited to identify the single nucleotide variations (SNVs) harboured by genes located within both regions in each individual. Evolutionary conservation-based algorithms were employed to predict the potential deleteriousness of SNVs. The amount of in silico predicted deleterious SNVs was significantly different (p < 0.05) between homozygosity hotspot and coldspot regions.

CONCLUSION: Genes located within ROH hotspot regions contain a significant burden of predicted putatively deleterious variants compared to genes located outside these regions, suggesting inbreeding as a possible mechanism allowing an enrichment of putatively deleterious variants at the homozygous state.

}, keywords = {Cohort Studies, Consanguinity, Homozygote, Humans, Mutation, Polymorphism, Single Nucleotide, Qatar}, issn = {1423-0062}, doi = {10.1159/000371387}, author = {Mezzavilla, Massimo and Vozzi, Diego and Badii, Ramin and Alkowari, Moza Khalifa and Abdulhadi, Khalid and Girotto, Giorgia and Gasparini, Paolo} } @article {3512, title = {Insight into genetic determinants of resting heart rate.}, journal = {Gene}, volume = {545}, year = {2014}, month = {2014 Jul 15}, pages = {170-4}, abstract = {

BACKGROUND: Recent studies suggested that resting heart rate (RHR) might be an independent predictor of cardiovascular mortality and morbidity. Nonetheless, the interrelation between RHR and cardiovascular diseases is not clear. In order to resolve this puzzle, the importance of genetic determinants of RHR has been recently suggested, but it needs to be further investigated.

OBJECTIVE: The aim of this study was to estimate the contribution of common genetic variations on RHR using Genome Wide Association Study.

METHODS: We performed a Genome Wide Association Study in an isolated population cohort of 1737 individuals, the Italian Network on Genetic Isolates - Friuli Venezia Giulia (INGI-FVG). Moreover, a haplotype analysis was performed. A regression tree analysis was run to highlight the effect of each haplotype combination on the phenotype.

RESULTS: A significant level of association (p<5 {\texttimes} 10(-8)) was detected for Single Nucleotide Polymorphisms (SNPs) in two genes expressed in the heart: MAML1 and CANX. Founding that the three different variants of the haplotype, which encompass both genes, yielded a phenotypic correlation. Indeed, a haplotype in homozygosity is significantly associated with the lower quartile of RHR (RHR <= 58 bpm). Moreover no significant association was found between cardiovascular risk factors and the different haplotype combinations.

CONCLUSION: Mastermind-like 1 and Calnexin were found to be associated with RHR. We demonstrated a relation between a haplotype and the lower quartile of RHR in our populations. Our findings highlight that genetic determinants of RHR may be implicated in determining cardiovascular diseases and could allow a better risk stratification.

}, keywords = {Calnexin, Cardiovascular Diseases, DNA-Binding Proteins, Female, Genome-Wide Association Study, Haplotypes, Heart Rate, Humans, Italy, Male, Middle Aged, Polymorphism, Single Nucleotide, Regression Analysis, Transcription Factors}, issn = {1879-0038}, doi = {10.1016/j.gene.2014.03.045}, author = {Mezzavilla, Massimo and Iorio, Annamaria and Bobbo, Marco and D{\textquoteright}Eustacchio, Angela and Merlo, Marco and Gasparini, Paolo and Ulivi, Sheila and Sinagra, Gianfranco} } @article {1826, title = {Influence of age, sex and ethnicity on platelet count in five Italian geographic isolates: mild thrombocytopenia may be physiological.}, journal = {Br J Haematol}, volume = {157}, year = {2012}, month = {2012 May}, pages = {384-7}, keywords = {Adolescent, Adult, Age Distribution, Aged, Aged, 80 and over, Child, Child, Preschool, Female, Humans, Infant, Italy, Male, Middle Aged, Platelet Count, Reference Values, Sex Distribution, Thrombocytopenia, Young Adult}, issn = {1365-2141}, doi = {10.1111/j.1365-2141.2011.08981.x}, author = {Biino, Ginevra and Gasparini, Paolo and d{\textquoteright}Adamo, Pio and Ciullo, Marina and Nutile, Teresa and Toniolo, Daniela and Sala, Cinzia and Minelli, Cosetta and G{\"o}gele, Martin and Balduini, Carlo L} } @article {1980, title = {Integration of genome-wide association studies with biological knowledge identifies six novel genes related to kidney function.}, journal = {Hum Mol Genet}, volume = {21}, year = {2012}, month = {2012 Dec 15}, pages = {5329-43}, abstract = {

In conducting genome-wide association studies (GWAS), analytical approaches leveraging biological information may further understanding of the pathophysiology of clinical traits. To discover novel associations with estimated glomerular filtration rate (eGFR), a measure of kidney function, we developed a strategy for integrating prior biological knowledge into the existing GWAS data for eGFR from the CKDGen Consortium. Our strategy focuses on single nucleotide polymorphism (SNPs) in genes that are connected by functional evidence, determined by literature mining and gene ontology (GO) hierarchies, to genes near previously validated eGFR associations. It then requires association thresholds consistent with multiple testing, and finally evaluates novel candidates by independent replication. Among the samples of European ancestry, we identified a genome-wide significant SNP in FBXL20 (P = 5.6 {\texttimes} 10(-9)) in meta-analysis of all available data, and additional SNPs at the INHBC, LRP2, PLEKHA1, SLC3A2 and SLC7A6 genes meeting multiple-testing corrected significance for replication and overall P-values of 4.5 {\texttimes} 10(-4)-2.2 {\texttimes} 10(-7). Neither the novel PLEKHA1 nor FBXL20 associations, both further supported by association with eGFR among African Americans and with transcript abundance, would have been implicated by eGFR candidate gene approaches. LRP2, encoding the megalin receptor, was identified through connection with the previously known eGFR gene DAB2 and extends understanding of the megalin system in kidney function. These findings highlight integration of existing genome-wide association data with independent biological knowledge to uncover novel candidate eGFR associations, including candidates lacking known connections to kidney-specific pathways. The strategy may also be applicable to other clinical phenotypes, although more testing will be needed to assess its potential for discovery in general.

}, keywords = {Amino Acid Transport Systems, Basic, Antigens, CD98 Heavy Chain, Genetic Predisposition to Disease, Genome-Wide Association Study, Glomerular Filtration Rate, Humans, Inhibin-beta Subunits, Intracellular Signaling Peptides and Proteins, Low Density Lipoprotein Receptor-Related Protein-2, Membrane Proteins, Polymorphism, Single Nucleotide}, issn = {1460-2083}, doi = {10.1093/hmg/dds369}, author = {Chasman, Daniel I and Fuchsberger, Christian and Pattaro, Cristian and Teumer, Alexander and B{\"o}ger, Carsten A and Endlich, Karlhans and Olden, Matthias and Chen, Ming-Huei and Tin, Adrienne and Taliun, Daniel and Li, Man and Gao, Xiaoyi and Gorski, Mathias and Yang, Qiong and Hundertmark, Claudia and Foster, Meredith C and O{\textquoteright}Seaghdha, Conall M and Glazer, Nicole and Isaacs, Aaron and Liu, Ching-Ti and Smith, Albert V and O{\textquoteright}Connell, Jeffrey R and Struchalin, Maksim and Tanaka, Toshiko and Li, Guo and Johnson, Andrew D and Gierman, Hinco J and Feitosa, Mary F and Hwang, Shih-Jen and Atkinson, Elizabeth J and Lohman, Kurt and Cornelis, Marilyn C and Johansson, {\r A}sa and T{\"o}njes, Anke and Dehghan, Abbas and Lambert, Jean-Charles and Holliday, Elizabeth G and Sorice, Rossella and Kutalik, Zolt{\'a}n and Lehtim{\"a}ki, Terho and Esko, T{\~o}nu and Deshmukh, Harshal and Ulivi, Sheila and Chu, Audrey Y and Murgia, Federico and Trompet, Stella and Imboden, Medea and Coassin, Stefan and Pistis, Giorgio and Harris, Tamara B and Launer, Lenore J and Aspelund, Thor and Eiriksdottir, Gudny and Mitchell, Braxton D and Boerwinkle, Eric and Schmidt, Helena and Cavalieri, Margherita and Rao, Madhumathi and Hu, Frank and Demirkan, Ayse and Oostra, Ben A and de Andrade, Mariza and Turner, Stephen T and Ding, Jingzhong and Andrews, Jeanette S and Freedman, Barry I and Giulianini, Franco and Koenig, Wolfgang and Illig, Thomas and Meisinger, Christa and Gieger, Christian and Zgaga, Lina and Zemunik, Tatijana and Boban, Mladen and Minelli, Cosetta and Wheeler, Heather E and Igl, Wilmar and Zaboli, Ghazal and Wild, Sarah H and Wright, Alan F and Campbell, Harry and Ellinghaus, David and N{\"o}thlings, Ute and Jacobs, Gunnar and Biffar, Reiner and Ernst, Florian and Homuth, Georg and Kroemer, Heyo K and Nauck, Matthias and Stracke, Sylvia and V{\"o}lker, Uwe and V{\"o}lzke, Henry and Kovacs, Peter and Stumvoll, Michael and M{\"a}gi, Reedik and Hofman, Albert and Uitterlinden, Andr{\'e} G and Rivadeneira, Fernando and Aulchenko, Yurii S and Polasek, Ozren and Hastie, Nick and Vitart, Veronique and Helmer, Catherine and Wang, Jie Jin and Stengel, B{\'e}n{\'e}dicte and Ruggiero, Daniela and Bergmann, Sven and K{\"a}h{\"o}nen, Mika and Viikari, Jorma and Nikopensius, Tiit and Province, Michael and Ketkar, Shamika and Colhoun, Helen and Doney, Alex and Robino, Antonietta and Kr{\"a}mer, Bernhard K and Portas, Laura and Ford, Ian and Buckley, Brendan M and Adam, Martin and Thun, Gian-Andri and Paulweber, Bernhard and Haun, Margot and Sala, Cinzia and Mitchell, Paul and Ciullo, Marina and Kim, Stuart K and Vollenweider, Peter and Raitakari, Olli and Metspalu, Andres and Palmer, Colin and Gasparini, Paolo and Pirastu, Mario and Jukema, J Wouter and Probst-Hensch, Nicole M and Kronenberg, Florian and Toniolo, Daniela and Gudnason, Vilmundur and Shuldiner, Alan R and Coresh, Josef and Schmidt, Reinhold and Ferrucci, Luigi and Siscovick, David S and van Duijn, Cornelia M and Borecki, Ingrid B and Kardia, Sharon L R and Liu, Yongmei and Curhan, Gary C and Rudan, Igor and Gyllensten, Ulf and Wilson, James F and Franke, Andre and Pramstaller, Peter P and Rettig, Rainer and Prokopenko, Inga and Witteman, Jacqueline and Hayward, Caroline and Ridker, Paul M and Parsa, Afshin and Bochud, Murielle and Heid, Iris M and Kao, W H Linda and Fox, Caroline S and K{\"o}ttgen, Anna} } @article {1622, title = {Individual differences in prefrontal cortex activity during perception of bitter taste using fNIRS methodology.}, journal = {Chem Senses}, volume = {35}, year = {2010}, month = {2010 Nov}, pages = {801-12}, abstract = {

Although bitter taste has a crucial role in nutrition by preventing the ingestion of toxic foods, there are few studies on bitter taste neuroimaging. To identify cortical areas involved in bitter taste perception and to determine if individual differences in taste sensitivity to 6-n-propylthiouracil (PROP) are represented in the brain by different cortical activation patterns, we examined 48 healthy volunteers using functional near-infrared spectroscopy. Participants rated the perceived intensity of filter paper disks impregnated with PROP and NaCl during the imaging procedure and were then classified as PROP tasters and nontasters. We monitored cortical activity in both the anterior and posterior regions of the dorsolateral prefrontal cortex (DLPFC) and in the ventrolateral prefrontal cortex (VLPFC). No activity was detected in the anterior DLPFC in any of the participants. However, during the administration of PROP, significant cortical activation was detected in the more posterior regions of the left DLPFC and in the left and right VLPFC but only in PROP tasters. PROP nontasters showed no cortical activity in these areas. These data suggest that the prefrontal cortex is involved in the conscious perception of the bitter taste of PROP and that the pattern of activity is consistent with individual differences in the ability to taste this compound. Thus, the PROP phenotype is associated with fundamental differences in cortical taste processing.

}, keywords = {Adult, Eating, Female, Food Preferences, Humans, Individuality, Male, Perception, Phenotype, Prefrontal Cortex, Propylthiouracil, Sodium Chloride, Spectroscopy, Near-Infrared, Taste, Taste Threshold, Young Adult}, issn = {1464-3553}, doi = {10.1093/chemse/bjq080}, author = {Bembich, Stefano and Lanzara, Carmela and Clarici, Andrea and Demarini, Sergio and Tepper, Beverly J and Gasparini, Paolo and Grasso, Domenico L} } @article {1624, title = {Insights into the binding of Phenyltiocarbamide (PTC) agonist to its target human TAS2R38 bitter receptor.}, journal = {PLoS One}, volume = {5}, year = {2010}, month = {2010}, pages = {e12394}, abstract = {

Humans{\textquoteright} bitter taste perception is mediated by the hTAS2R subfamily of the G protein-coupled membrane receptors (GPCRs). Structural information on these receptors is currently limited. Here we identify residues involved in the binding of phenylthiocarbamide (PTC) and in receptor activation in one of the most widely studied hTAS2Rs (hTAS2R38) by means of structural bioinformatics and molecular docking. The predictions are validated by site-directed mutagenesis experiments that involve specific residues located in the putative binding site and trans-membrane (TM) helices 6 and 7 putatively involved in receptor activation. Based on our measurements, we suggest that (i) residue N103 participates actively in PTC binding, in line with previous computational studies. (ii) W99, M100 and S259 contribute to define the size and shape of the binding cavity. (iii) W99 and M100, along with F255 and V296, play a key role for receptor activation, providing insights on bitter taste receptor activation not emerging from the previously reported computational models.

}, keywords = {Amino Acid Sequence, Calcium, Cell Line, Computational Biology, Dose-Response Relationship, Drug, Humans, Intracellular Space, Ligands, Models, Molecular, Molecular Sequence Data, Mutagenesis, Site-Directed, Phenylthiourea, Protein Binding, Protein Structure, Secondary, Receptors, G-Protein-Coupled}, issn = {1932-6203}, doi = {10.1371/journal.pone.0012394}, author = {Biarn{\'e}s, Xevi and Marchiori, Alessandro and Giorgetti, Alejandro and Lanzara, Carmela and Gasparini, Paolo and Carloni, Paolo and Born, Stephan and Brockhoff, Anne and Behrens, Maik and Meyerhof, Wolfgang} }