1,082 research outputs found

    Bernard Heidsieck : de la poésie sonore à la poésie de la quotidienneté

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    Sound poetry presents a particular development in French contemporary poetry. This article aims at positioning it in the context of contemporary poetry –especially avant-garde poetry– and at explaining the role played by Bernard Heidsieck, a central poet of sound poetry. We know well that sound poetry derived from the artistic movement of lettrism and that it received the influence of this movement’s leader, Isidore Isou. Certainly, we can easily find a theoretical resemblance between the sound poetry of François Dufrêne, who participated in the movement, and the phonetic poetry of Isou. But Bernard Heidsieck, having nothing to do with the movement, referred to a poet: Antonin Artaud. The present article focuses on the fundamental difference between the poetics of Heidsieck and the previous sound poetry, in order to clarify Artaud’s influence as contrasted to the influence exerted by Isou.La poesía sonora representa un desarrollo bastante particular en la poesía contemporánea francesa. El presente artículo intenta situarla en el contexto de la poesía contemporánea y entender qué papel desempeña Bernard Heidsieck en ello, poeta central de la poesía sonora. Sabemos que la poesía sonora derivó del movimiento artístico del letrismo y que está bajo la influencia del líder de este movimiento: Isidore Isou. Podemos encontrar una semejanza teórica entre la poesía sonora de François Dufrêne que participaba en dicho movimiento y la poesía fonética de Isou, pero Heidsieck no tenía nada que ver con el movimiento y hacía referencia a un poeta: Antonin Artaud. El presente artículo aborda la diferencia fundamental entre la poética de Heidsieck y la poesía sonora precedente, y explora la influencia de Artaud frente a la de Isou.La poésie sonore exerçait un développement assez particulier dans la poésie contemporaine française. Le présent article a pour but de la positionner dans le contexte de la poésie contemporaine — et surtout avant-gardiste — et de savoir quel rôle y joue Bernard Heidsieck, poète central de la poésie sonore. On sait bien que la poésie sonore dériva du mouvement artistique du lettrisme et qu’elle subit une influence du leader de ce mouvement : Isidore Isou. Certes on peut très facilement trouver une ressemblance théorique entre la poésie sonore de François Dufrêne qui participait lui-même au mouvement et la poésie phonétique d’Isou. Mais Bernard Heidsieck, n’ayant rien à voir avec le mouvement, faisait référence à un poète : Antonin Artaud. Le présent article focalise la différence fondamentale entre la poétique de Heidsieck et la poésie sonore précédente, et éclaire quelle influence d’Artaud, au lieu de celle d’Isou, subissait le poète

    Immunohistochemical Analysis of Neuroendocrine (NE) Differentiation in Testicular Germ Cell Tumors (GCTs): Use of Confocal Laser Scanning Microscopy (CLSM) to Demonstrate Direct NE Differentiation from GCTs

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    Neuroendocrine (NE) differentiation is infrequent in testicular tumors and its histogenesis is not well understood. The present study is aimed at elucidating the pathway of neuroendocrine differentiation in germ cell tumors (GCTs) of the testis. In the analysis of 46 germ cell tumor components from 23 testicular tumors, we focused on GCTs with neuroendocrine differentiation, 7 teratoma, 1 embryonal carcinoma and 1 neuroendocrine carcinoma by immunohistochemical study and confocal laser scanning microscopy (CLSM) analysis. NE marker positive cells were noted in the tumor with collision of teratoma and embryonal carcinoma (E&T tumor), in the immature columnar cells of transitional form of embryonal carcinoma to teratoma (E-T cells) and neuroendocrine carcinoma cells, in addition to the well known mature intestinal mucosa in teratoma. Double staining for a NE marker (CGA) and a germ cell marker (PLAP) demonstrated the localization of both proteins in the same E-T cells confirmed by CLSM. Another finding, indicating the intimate relation between embryonal carcinoma and neuroendcrine differentiation, is that neuroendocrine carcinoma expressed a marker of embryonal carcinoma, CD30. The present results indicated that the NE cells might be differentiated from embryonal carcinoma, a view that has not been proposed before, but that is made in the present study using CLSM

    X-linked Severe Combined Immunodeficiency Syndrome: The First Korean Case with γc Chain Gene Mutation and Subsequent Genetic Counseling

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    X-linked severe combined immunodeficiency (X-SCID) is a rare, life-threatening immune disorder, caused by mutations in the γc chain gene, which encodes an essential component of the cytokine receptors for interleukin-2 (IL-2), IL-4, IL-7, IL-9, IL-15, and IL-21. A 13-month-old boy with recurrent infections who had reduced serum immunoglobulin levels and decreased numbers of CD3, CD16/56 cells was evaluated for γc chain gene mutation and protein expression. The patient had a C-to-T point mutation at nucleotide position 690, one of the hot spots, resulting in a single amino acid substitution of cysteine for arginine (R226C), as determined by direct sequencing and PCR-RFLP. The patient's mother was a heterozygous carrier. Percutaneous umbilical cord blood sampling was performed at the 6-month of gestation in a subsequent pregnancy. As the immunophenotype of the fetus showed an identical pattern, the pregnancy was terminated and genetic analysis of the abortus confirmed recurrence. This is the first report of the molecular diagnosis of X-SCID in Korea. Genetic analysis of the γc chain gene is useful for definite diagnosis and genetic counseling for X-SCID

    Data-driven identification and classification of nonlinear aging patterns reveals the landscape of associations between DNA methylation and aging

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    オミックスデータから非線形な加齢変化の全体像を取得する解析手法を開発. 京都大学プレスリリース. 2023-02-13.[Background] Aging affects the incidence of diseases such as cancer and dementia, so the development of biomarkers for aging is an important research topic in medical science. While such biomarkers have been mainly identified based on the assumption of a linear relationship between phenotypic parameters, including molecular markers, and chronological age, numerous nonlinear changes between markers and aging have been identified. However, the overall landscape of the patterns in nonlinear changes that exist in aging is unknown. [Result] We propose a novel computational method, Data-driven Identification and Classification of Nonlinear Aging Patterns (DICNAP), that is based on functional data analysis to identify biomarkers for aging and potential patterns of change during aging in a data-driven manner. We applied the proposed method to large-scale, public DNA methylation data to explore the potential patterns of age-related changes in methylation intensity. The results showed that not only linear, but also nonlinear changes in DNA methylation patterns exist. A monotonous demethylation pattern during aging, with its rate decreasing at around age 60, was identified as the candidate stable nonlinear pattern. We also analyzed the age-related changes in methylation variability. The results showed that the variability of methylation intensity tends to increase with age at age-associated sites. The representative variability pattern is a monotonically increasing pattern that accelerates after middle age. [Conclusion] DICNAP was able to identify the potential patterns of the changes in the landscape of DNA methylation during aging. It contributes to an improvement in our theoretical understanding of the aging process

    Expression of TIM3/VISTA checkpoints and the CD68 macrophage-associated marker correlates with anti-PD1/PDL1 resistance: implications of immunogram heterogeneity.

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    Although immunotherapies have achieved remarkable salutary effects among subgroups of advanced cancers, most patients do not respond. We comprehensively evaluated biomarkers associated with the "cancer-immunity cycle" in the pan-cancer setting in order to understand the immune landscape of metastatic malignancies as well as anti-PD-1/PD-L1 inhibitor resistance mechanisms. Interrogation of 51 markers of the cancer-immunity cycle was performed in 101 patients with diverse malignancies using a clinical-grade RNA sequencing assay. Overall, the immune phenotypes demonstrated overexpression of multiple checkpoints including VISTA (15.8% of 101 patients), PD-L2 (10.9%), TIM3 (9.9%), LAG3 (8.9%), PD-L1 (6.9%) and CTLA4 (3.0%). Additionally, aberrant expression of macrophage-associated markers (e.g. CD68 and CSF1R; 11-23%), metabolic immune escape markers (e.g. ADORA2A and IDO1; 9-16%) and T-cell priming markers (e.g. CD40, GITR, ICOS and OX40; 4-31%) were observed. Most tumors (87.1%, 88/101) expressed distinct immune portfolios, with a median of six theoretically actionable biomarkers (pharmacologically tractable by Food and Drug Administration approved agents [on- or off-label] or with agents in clinical development). Overexpression of TIM-3, VISTA and CD68 were significantly associated with shorter progression-free survival (PFS) after anti-PD-1/PD-L1-based therapies (among 39 treated patients) (all P < .01). In conclusion, cancer-immunity cycle biomarker evaluation was feasible in diverse solid tumors. High expression of alternative checkpoints TIM-3 and VISTA and of the macrophage-associated markers CD68 were associated with significantly worse PFS after anti-PD-1/PD-L1-based therapies. Most patients had distinct and complex immune expression profiles suggesting the need for customized combinations of immunotherapy

    Changes in biotin levels during production of natto, Japanese fermented soybean

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    The change of biotin level during production of natto (Japanese fermented soybean) was investigated in this study.  The total biotin level was measured by an agar plate bioassay using Lactobacillus plantarum ATCC 8014.  The total biotin level decreased during water soaking, but increased after the fermentation of soybeans using Bacillus subtilis var. natto (B. natto) and reached a maximum level.  The increase of total biotin was not affected by Asp, Arg, and Ile which promoted the growth of L. plantarum in high concentrations.  The peak level of biotin in the fermented soybeans was significantly higher than that of dry soybeans.  The fermented soybeans at the biotin peak level were adequate for food.  In addition, we detected 9 and 4 biotinylated polypeptides in the soybeans and B. natto used in this study, respectively.  We speculated that the increase of biotin level may depend on the increase of the 4 biotinylated polypeptides and free biotin in B. natto

    Transforming Growth Factor (TGF)-β1–producing Regulatory T Cells Induce Smad-mediated Interleukin 10 Secretion That Facilitates Coordinated Immunoregulatory Activity and Amelioration of TGF-β1–mediated Fibrosis

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    Interleukin (IL)-10 and transforming growth factor (TGF)-β1 are suppressor cytokines that frequently occur together during a regulatory T cell response. Here we used a one gene doxycycline (Dox)-inducible plasmid encoding TGF-β1 to analyze this association and test its utility. In initial studies, we showed that intranasal administration of this plasmid (along with Dox) led to the appearance of TGF-β1–producing cells (in spleen and lamina propria) and the almost concomitant appearance of IL-10–producing cells. Moreover, we showed that these cells exert Dox-regulated suppression of the T helper cell (Th)1-mediated inflammation in trinitrobenzene sulfonic acid colitis. In subsequent in vitro studies using retroviral TGF-β1 expression, we established that IL-10 production by Th1 cells occurs after exposure to TGF-β1 from either an endogenous or exogenous source. In addition, using a self-inactivating retrovirus luciferase reporter construct we showed that TGF-β1 induces Smad4, which then binds to and activates the IL-10 promoter. Furthermore, intranasal TGF-β1 plasmid administration ameliorates bleomycin-induced fibrosis in wild-type but not IL-10–deficient mice, strongly suggesting that the amelioration is IL-10 dependent and that IL-10 protects mice from TGF-β1–mediated fibrosis. Taken together, these findings suggest that the induction of IL-10 by TGF-β1 is not fortuitous, but instead fulfills important requirements of TGF-β1 function after its secretion by regulatory T cells

    Time-resolved light scattering studies on kinetics of phase separation and phase dissolution of polymer blends. 1. Kinetics of phase separation of a binary mixture of polystyrene and poly(vinyl methyl ether

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    ABSTRACT The dynamics of liquid-liquid phase separation of a polymer blend of polystyrene and poly(viny1 methyl ether) was studied by time-resolved elastic light scattering techniques in both the nucleation-growth (NG) and spinodal-decomposition (SD) regimes. It was found that in the early stage of SD the scattered intensity a t a given momentum transfer q = (4r/X) sin (8/2) increases exponentially with time after the initiation of the isothermal phase separation involved by a temperature jump from the temperature well below the binodal point. The relaxation rate 2R(q) of the intensity increase is a function of q such that R(q)/q2 linearly decreases with q2, in accord with the linear theories of SD originally proposed by Cahn for small molecules and extended by de Gennes for polymers. The spinodal temperature was obtained from the dynamics measured as a function of temperature in the linear SD regime. In the later stage of SD, the intensity increase with time starts to deviate from exponential behavior and the scattering maximum shifts to smaller q, corresponding to the onset of the coarsening process. The higher the superheating, the earlier the stage where the coarsening starts. In the NG regime the intensity increases nonexponentially with time
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