13,529 research outputs found

    A developmental and genetic classification for malformations of cortical development: update 2012.

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    Malformations of cerebral cortical development include a wide range of developmental disorders that are common causes of neurodevelopmental delay and epilepsy. In addition, study of these disorders contributes greatly to the understanding of normal brain development and its perturbations. The rapid recent evolution of molecular biology, genetics and imaging has resulted in an explosive increase in our knowledge of cerebral cortex development and in the number and types of malformations of cortical development that have been reported. These advances continue to modify our perception of these malformations. This review addresses recent changes in our perception of these disorders and proposes a modified classification based upon updates in our knowledge of cerebral cortical development

    Missense-depleted regions in population exomes implicate ras superfamily nucleotide-binding protein alteration in patients with brain malformation.

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    Genomic sequence interpretation can miss clinically relevant missense variants for several reasons. Rare missense variants are numerous in the exome and difficult to prioritise. Affected genes may also not have existing disease association. To improve variant prioritisation, we leverage population exome data to identify intragenic missense-depleted regions (MDRs) genome-wide that may be important in disease. We then use missense depletion analyses to help prioritise undiagnosed disease exome variants. We demonstrate application of this strategy to identify a novel gene association for human brain malformation. We identified de novo missense variants that affect the GDP/GTP-binding site of ARF1 in three unrelated patients. Corresponding functional analysis suggests ARF1 GDP/GTP-activation is affected by the specific missense mutations associated with heterotopia. These findings expand the genetic pathway underpinning neurologic disease that classically includes FLNA. ARF1 along with ARFGEF2 add further evidence implicating ARF/GEFs in the brain. Using functional ontology, top MDR-containing genes were highly enriched for nucleotide-binding function, suggesting these may be candidates for human disease. Routine consideration of MDR in the interpretation of exome data for rare diseases may help identify strong genetic factors for many severe conditions, infertility/reduction in reproductive capability, and embryonic conditions contributing to preterm loss

    Time, Politics and Homelessness in Contemporary Japan

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    Journeys to Others and Lessons of Self: Carlos Castaneda in \u3cem\u3eCamposcape\u3c/em\u3e

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    Drawing on Michel Foucault’s concept of heterotopia, this article examines the importance of place and gender within constructions of race politics in Carlos Castaneda’s series on shamanism. Championing a “separate reality” predicated on an indigenous worldview, Castaneda’s lessons invited transnational middle-class youth to journey alongside him to camposcape—an anachronistic and idealized countryside—as a means to escape the bourgeois values of their homelands and find spiritual fulfillment in a timeless and authentic Mexico. Castaneda’s work proposed new viable spaces of difference in Mexico, yet inscribed these spaces with a masculinist discourse that served to neutralize the gender trouble within the counterculture movement in both Mexico and the US

    Editorial

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    Pintu Terlarang a Disconcerting Spatial Interpretation of Urban Dystopia

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    The main character of the film Pintu terlarang (The forbidden door), Gambir, attains success in the art world by making statues of pregnant women. Part of his creative process is to insert dead foetuses into the wombs of the statues. His troubled soul meets a written request for help by a child he encounters in various places. The journey to find the child leads him to a secret door, revealing a terrifying reality of a dehumanized world. The city, commonly characterized by a sense of vastness, is set in opposition to small, enclosed spaces where individuals converse with their utmost self. The questions explored are: What is the role of space in engendering urban dystopia? In what ways does the selection of different space settings help create a dehumanized world? I argue that urban dystopia is created when the inhabitants of a city return to enclosed spaces in an effort to find an existence. When individuals prefer enclosed spaces and fail to reconstruct existing meanings, tendencies toward dystopia will come forward and city life will degenerate
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