8 research outputs found

    Large-scale neuroanatomical study uncovers 198 gene associations in mouse brain morphogenesis.

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    Brain morphogenesis is an important process contributing to higher-order cognition, however our knowledge about its biological basis is largely incomplete. Here we analyze 118 neuroanatomical parameters in 1,566 mutant mouse lines and identify 198 genes whose disruptions yield NeuroAnatomical Phenotypes (NAPs), mostly affecting structures implicated in brain connectivity. Groups of functionally similar NAP genes participate in pathways involving the cytoskeleton, the cell cycle and the synapse, display distinct fetal and postnatal brain expression dynamics and importantly, their disruption can yield convergent phenotypic patterns. 17% of human unique orthologues of mouse NAP genes are known loci for cognitive dysfunction. The remaining 83% constitute a vast pool of genes newly implicated in brain architecture, providing the largest study of mouse NAP genes and pathways. This offers a complementary resource to human genetic studies and predict that many more genes could be involved in mammalian brain morphogenesis

    Genotype and phenotype relationships in neurodevelopmental disorders

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    NeuroDevelopmental Disorders (NDDs) are a group of heterogeneous neuropsychiatric conditions, encompassing Developmental Delay (DD), Intellectual Disability (ID), Autism Spectrum Disorder (ASD) and Gilles de la Tourette Syndrome (GTS). NDDs often involve a life-long need of supportive services and represent a major economic and societal burden in Europe and the United States. Hitherto, no safe and effective treatment strategies are available, underpinning the urgency of deciphering their elusive aetiology. NDDs have a strong genetic component. Accordingly, the mechanistic understanding of disease involves (1) the description of mutational landscapes, (2) the molecular and cellular of characterisation of genetic variants and (3) their integration at circuit and system levels. In this thesis, we tackled these theoretical underpinnings to provide insights into the genetics of NDDs and the onset of associated clinical abnormalities. Firstly, aiming to shape the genetic architecture of GTS, a condition characterised by the presence of motor and vocal tics, we undertook a whole-genome CNV study of a cohort of Danish GTS cases and healthy controls. Using statistical and functional genomics approaches, we proposed novel potential candidate genes and implicated the disruption of early neurodevelopmental and late synaptic processes in the aetiology of GTS. Secondly, to elucidate the vast phenotypic heterogeneity of NDDs, we conducted a systematic investigation of genotype and phenotype relationships in DD, ID and ASD. Taking advantage of extensive phenotypic and genetic data available for DD/ID and ASD patients, we grouped individuals based on their functional rare CNV and gene disruptions but did not to identify distinguishing clinical archetypes. Instead, we showed converging molecular perturbations underlie the onset of globally more similar clinical presentations and investigated the role of common variants in modulating their expressivity. Lastly, we established the relevance of mouse models in the study of human disease. By applying comprehensive genomics approaches to over 1,000 mouse neuroanatomical knockouts, we implicated early neurodevelopmental and adult synaptic processes in the aetiology of ID and brain malformations. Furthermore, we showed that functionally converging genetic disturbances translate at the phenotypic level and proposed novel candidate ID genes.</p

    Genotype and phenotype relationships in neurodevelopmental disorders

    No full text
    NeuroDevelopmental Disorders (NDDs) are a group of heterogeneous neuropsychiatric conditions, encompassing Developmental Delay (DD), Intellectual Disability (ID), Autism Spectrum Disorder (ASD) and Gilles de la Tourette Syndrome (GTS). NDDs often involve a life-long need of supportive services and represent a major economic and societal burden in Europe and the United States. Hitherto, no safe and effective treatment strategies are available, underpinning the urgency of deciphering their elusive aetiology. NDDs have a strong genetic component. Accordingly, the mechanistic understanding of disease involves (1) the description of mutational landscapes, (2) the molecular and cellular of characterisation of genetic variants and (3) their integration at circuit and system levels. In this thesis, we tackled these theoretical underpinnings to provide insights into the genetics of NDDs and the onset of associated clinical abnormalities. Firstly, aiming to shape the genetic architecture of GTS, a condition characterised by the presence of motor and vocal tics, we undertook a whole-genome CNV study of a cohort of Danish GTS cases and healthy controls. Using statistical and functional genomics approaches, we proposed novel potential candidate genes and implicated the disruption of early neurodevelopmental and late synaptic processes in the aetiology of GTS. Secondly, to elucidate the vast phenotypic heterogeneity of NDDs, we conducted a systematic investigation of genotype and phenotype relationships in DD, ID and ASD. Taking advantage of extensive phenotypic and genetic data available for DD/ID and ASD patients, we grouped individuals based on their functional rare CNV and gene disruptions but did not to identify distinguishing clinical archetypes. Instead, we showed converging molecular perturbations underlie the onset of globally more similar clinical presentations and investigated the role of common variants in modulating their expressivity. Lastly, we established the relevance of mouse models in the study of human disease. By applying comprehensive genomics approaches to over 1,000 mouse neuroanatomical knockouts, we implicated early neurodevelopmental and adult synaptic processes in the aetiology of ID and brain malformations. Furthermore, we showed that functionally converging genetic disturbances translate at the phenotypic level and proposed novel candidate ID genes.</p

    Genotype and phenotype relationships in neurodevelopmental disorders

    No full text
    NeuroDevelopmental Disorders (NDDs) are a group of heterogeneous neuropsychiatric conditions, encompassing Developmental Delay (DD), Intellectual Disability (ID), Autism Spectrum Disorder (ASD) and Gilles de la Tourette Syndrome (GTS). NDDs often involve a life-long need of supportive services and represent a major economic and societal burden in Europe and the United States. Hitherto, no safe and effective treatment strategies are available, underpinning the urgency of deciphering their elusive aetiology. NDDs have a strong genetic component. Accordingly, the mechanistic understanding of disease involves (1) the description of mutational landscapes, (2) the molecular and cellular of characterisation of genetic variants and (3) their integration at circuit and system levels. In this thesis, we tackled these theoretical underpinnings to provide insights into the genetics of NDDs and the onset of associated clinical abnormalities. Firstly, aiming to shape the genetic architecture of GTS, a condition characterised by the presence of motor and vocal tics, we undertook a whole-genome CNV study of a cohort of Danish GTS cases and healthy controls. Using statistical and functional genomics approaches, we proposed novel potential candidate genes and implicated the disruption of early neurodevelopmental and late synaptic processes in the aetiology of GTS. Secondly, to elucidate the vast phenotypic heterogeneity of NDDs, we conducted a systematic investigation of genotype and phenotype relationships in DD, ID and ASD. Taking advantage of extensive phenotypic and genetic data available for DD/ID and ASD patients, we grouped individuals based on their functional rare CNV and gene disruptions but did not to identify distinguishing clinical archetypes. Instead, we showed converging molecular perturbations underlie the onset of globally more similar clinical presentations and investigated the role of common variants in modulating their expressivity. Lastly, we established the relevance of mouse models in the study of human disease. By applying comprehensive genomics approaches to over 1,000 mouse neuroanatomical knockouts, we implicated early neurodevelopmental and adult synaptic processes in the aetiology of ID and brain malformations. Furthermore, we showed that functionally converging genetic disturbances translate at the phenotypic level and proposed novel candidate ID genes.</p

    Genotype and phenotype relationships in neurodevelopmental disorders

    No full text
    NeuroDevelopmental Disorders (NDDs) are a group of heterogeneous neuropsychiatric conditions, encompassing Developmental Delay (DD), Intellectual Disability (ID), Autism Spectrum Disorder (ASD) and Gilles de la Tourette Syndrome (GTS). NDDs often involve a life-long need of supportive services and represent a major economic and societal burden in Europe and the United States. Hitherto, no safe and effective treatment strategies are available, underpinning the urgency of deciphering their elusive aetiology. NDDs have a strong genetic component. Accordingly, the mechanistic understanding of disease involves (1) the description of mutational landscapes, (2) the molecular and cellular of characterisation of genetic variants and (3) their integration at circuit and system levels. In this thesis, we tackled these theoretical underpinnings to provide insights into the genetics of NDDs and the onset of associated clinical abnormalities. Firstly, aiming to shape the genetic architecture of GTS, a condition characterised by the presence of motor and vocal tics, we undertook a whole-genome CNV study of a cohort of Danish GTS cases and healthy controls. Using statistical and functional genomics approaches, we proposed novel potential candidate genes and implicated the disruption of early neurodevelopmental and late synaptic processes in the aetiology of GTS. Secondly, to elucidate the vast phenotypic heterogeneity of NDDs, we conducted a systematic investigation of genotype and phenotype relationships in DD, ID and ASD. Taking advantage of extensive phenotypic and genetic data available for DD/ID and ASD patients, we grouped individuals based on their functional rare CNV and gene disruptions but did not to identify distinguishing clinical archetypes. Instead, we showed converging molecular perturbations underlie the onset of globally more similar clinical presentations and investigated the role of common variants in modulating their expressivity. Lastly, we established the relevance of mouse models in the study of human disease. By applying comprehensive genomics approaches to over 1,000 mouse neuroanatomical knockouts, we implicated early neurodevelopmental and adult synaptic processes in the aetiology of ID and brain malformations. Furthermore, we showed that functionally converging genetic disturbances translate at the phenotypic level and proposed novel candidate ID genes.</p

    USVAJANJE GENERIČKIH GLOBALNIH POSLOVNIH STRATEGIJA - MARKETING ASPEKT // ADOPTION OF GENERIC GLOBAL BUSINESS STRATEGIES – MARKETING ASPECT

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    Postoje različiti putevi koji vode ka globalizaciji, pa tako i brojne opcije zamenadžment kada kreće putem globalizacije. Izbor prave i odgovarajuće globalnestrategije je upravo jedan od najvažnijih izazova koji se stavlja pred svaki posao ilipreduzeće. U predmetnom radu dat je pregled globalnih strategija proizvoda,strategija globalne komunikacije, opcija za prilagođavanje generičke globalnestrategije, aspekti kreiranja generičkih globalnih strategija, te njihove prednosti inedostaci. // There are many different paths that lead to globalization, so as many options formanagement when moving through globalization. Choosing the right and appropriateglobal strategy is just one of the major challenges placed before any business orenterprise. Presented paper gives an overview of global product strategy, globalcommunication strategy, options for customizing the generic global strategies, aspectsof creating generic global strategies, and discusses their advantages anddisadvantages

    In silico modeling of spore inhalation reveals fungal persistence following low dose exposure.

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    The human lung is constantly exposed to spores of the environmental mould Aspergillus fumigatus, a major opportunistic pathogen. The spectrum of resultant disease is the outcome of complex host-pathogen interactions, an integrated, quantitative understanding of which lies beyond the ethical and technical reach permitted by animal studies. Here we construct a mathematical model of spore inhalation and clearance by concerted actions of macrophages and neutrophils, and use it to derive a mechanistic understanding of pathogen clearance by the healthy, immunocompetent host. In particular, we investigated the impact of inoculum size upon outcomes of single-dose fungal exposure by simulated titrations of inoculation dose, from 10(6) to 10(2) spores. Simulated low-dose (10(2)) spore exposure, an everyday occurrence for humans, revealed a counter-intuitive prediction of fungal persistence (>3 days). The model predictions were reflected in the short-term dynamics of experimental murine exposure to fungal spores, thereby highlighting the potential of mathematical modelling for studying relevant behaviours in experimental models of fungal disease. Our model suggests that infectious outcomes can be highly dependent upon short-term dynamics of fungal exposure, which may govern occurrence of cyclic or persistent subclinical fungal colonisation of the lung following low dose spore inhalation in non-neutropenic hosts
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