161 research outputs found

    IMPORTANCE OF VISUAL INFORMATION AT CHANGE IN MOTION DIRECTION ON DEPTH PERCEPTION

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    This paper demonstrates the importance of visual information on depth perception from monocular motion parallax presented at the time of change in the motion direction of head and stimulus movements. In head-tracking systems, a longer delay time between the head and stimulus movements degrades the depth perception from monocular motion parallax. Because this delay is noticeable at this time, we hypothesized that the visual information given at the time of the direction change plays a critical role in the depth perception from motion parallax. We evaluated depth perception from monocular motion parallax with and without a visual stimulus at the time of the motion direction change to confirm our hypothesis, and clarified that stable and unambiguous depth can be perceived by presenting the change of the stimulus motion direction. We also demonstrated that it is the change in motion direction itself that is important rather than the temporal stop between deceleration and acceleration of the stimulus motion

    Stabilization of SF₅⁻ with Glyme-Coordinated Alkali Metal Cations

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    The stabilization of complex fluoroanions derived from weakly acidic parent fluorides is a significant and ongoing challenge. The [SF₅]⁻ anion is recognized as one such case, and only a limited number of [SF₅]⁻ salts are known to be stable at room temperature. In the present study, glyme-coordinated alkali metal cations (Kâș, Rbâș, and Csâș) are employed to stabilize [SF₅]⁻, which provides a simple synthetic route to a [SF₅]⁻ salt. The reactivities of KF and RbF with SF₄ are significantly enhanced by complexation with G4, based on Raman spectroscopic analyses. A new room-temperature stable salt, [Cs(G4)₂][SF₅] (G4 = tetraglyme), was synthesized by stoichiometric reaction of CsF, G4, and SF₄. The vibrational frequencies of [SF₅]⁻ were assigned based on quantum chemical calculations, and the shift of the G4 breathing mode accompanying coordination to metal cations was confirmed by Raman spectroscopy. Single-crystal X-ray diffraction revealed that Csâș is completely isolated from [SF₅]⁻ by two G4 ligands and [SF₅]⁻ is disordered along the crystallographic two-fold axis. Hirshfeld surface analysis reveals that the H···H interaction between two neighboring [Cs(G4)₂]âș moieties is more dominant on the Hirshfeld surface than the interaction between the H atom in glyme molecules and the F atom in [SF₅]⁻, providing a CsCl-type structural model where the large and spherical [Cs(G4)₂]âș cations contact each other and the [SF₅]⁻ anions occupy interstitial spaces in the crystal lattice. The [SF₅]⁻ anion, combined with [Cs(G4)₂]âș, exhibits a very limited deoxofluorinating ability toward hydroxyl groups in both neat conditions and THF solutions

    Isolation and immunocharacterization of lactobacillus salivarius from the intestine of wakame-fed pigs to develop novel "Immunosynbiotics"

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    Emerging threats of antimicrobial resistance necessitate the exploration of effective alternatives for healthy livestock growth strategies. ?Immunosynbiotics?, a combination of immunoregulatory probiotics and prebiotics with synergistic effects when used together in feed, would be one of the most promising candidates. Lactobacilli are normal residents of the gastrointestinal tract of pigs, and many of them are able to exert beneficial immunoregulatory properties. On the other hand, wakame (Undaria pinnafida), an edible seaweed, has the potential to be used as an immunoregulatory prebiotic when added to livestock feed. Therefore, in order to develop a novel immunosynbiotic, we isolated and characterized immunoregulatory lactobacilli with the ability to utilize wakame. Following a month-long in vivo wakame feeding trial in 8-week-old Landrace pigs (n = 6), sections of intestinal mucous membrane were processed for bacteriological culture and followed by identification of pure colonies by 16S rRNA sequence. Each isolate was characterized in vitro in terms of their ability to assimilate to the wakame and to differentially modulate the expression of interleukin-6 (IL-6) and interferon beta (IFN-ÎČ) in the porcine intestinal epithelial (PIE) cells triggered by Toll-like receptor (TLR)-4 and TLR-3 activation, respectively. We demonstrated that feeding wakame to pigs significantly increased the lactobacilli population in the small intestine. We established a wakame-component adjusted culture media that allowed the isolation and characterization of a total of 128 Lactobacilli salivarius colonies from the gut of wakame-fed pigs. Interestingly, several L. salivarius isolates showed both high wakame assimilation ability and immunomodulatory capacities. Among the wakame assimilating isolates, L. salivarius FFIG71 showed a significantly higher capacity to upregulate the IL-6 expression, and L. salivarius FFIG131 showed significantly higher capacity to upregulate the IFN-ÎČ expression; these could be used as immunobiotic strains in combination with wakame for the development of novel immunologically active feeds for pigs.Fil: Masumizu, Yuki. Tohoku University; JapĂłnFil: Zhou, Binghui. Tohoku University; JapĂłnFil: Humayun Kober, AKM. Tohoku University; JapĂłn. Chittagong Veterinary and Animal Sciences University; BangladeshFil: Islam, M. Aminul. Agricultural University; Bangladesh. Tohoku University; JapĂłnFil: Iida, Hikaru. Tohoku University; JapĂłnFil: Ikeda-Ohtsubo, Wakako. Tohoku University; JapĂłnFil: Suda, Yoshihito. Department Of Food Agriculture, Miyagi University; JapĂłnFil: AlbarracĂ­n, Leonardo. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Tohoku University; JapĂłn. Universidad Nacional de TucumĂĄn; ArgentinaFil: Nochi, Tomonori. Tohoku University; JapĂłnFil: Aso, Hisashi. Tohoku University; JapĂłnFil: Suzuki, Keiichi. Tohoku University; JapĂłnFil: Villena, Julio Cesar. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Tohoku University; JapĂłnFil: Kitazawa, Haruki. Tohoku University; JapĂł

    Idiopathic multicentric Castleman disease with positive antiphospholipid antibody: atypical and undiagnosed autoimmune disease?

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    Idiopathic multicentric Castleman disease (iMCD) is a systemic disorder characterized by systemic inflammation and organ dysfunction associated with an increase in pro-inflammatory cytokines. Some patients with iMCD are positive for autoantibodies, although their significance and relationship with specific associated autoimmune diseases are unclear. This study retrospectively analyzed the clinicopathological features of iMCD patients focusing on autoantibodies. Among 63 iMCD patients in our database, 19 were positive for at least one autoantibody. Among the 19, we identified five with plasma cell type (PC)-iMCD lymph node histopathology and positive anti-phospholipid antibodies. These patients were likely to have thrombocytopenia, anasarca, fever, reticulin fibrosis or renal insufficiency, organomegaly (TAFRO) symptoms, and thrombotic events. The present study suggests that patients with undiagnosed or atypical autoimmune diseases, including anti-phospholipid syndrome (APS), were treated for iMCD. APS may present with thrombocytopenia or even multi-organ failure, which overlap with clinical presentations of iMCD. Due to differences in the treatment regimen and follow-up, recognition of the undiagnosed autoimmune disease process in those suspected of iMCD is essential. Our study highlights the importance of complete exclusion of differential diagnoses in patients with iMCD in their diagnostic workup

    Draft genome sequence of ligilactobacillus salivarius FFIG58, isolated from the intestinal tract of wakame-fed pig

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    Ligilactobacillus salivarius FFIG58 was isolated from the intestine of a wakame-fed pig and sequenced with an Illumina HiSeq system. FFIG58 genome sequencing revealed a genome size of 1,984,180 bp, with 1,994 protein-coding genes and a GC content of 32.9%. This draft genome sequence will contribute to a better understanding of the porcine gut microbiome.Fil: Zhou, Binghui. Tohoku University; JapĂłnFil: AlbarracĂ­n, Leonardo Miguel. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de TucumĂĄn. Facultad de Ciencias Exactas y TecnologĂ­a; Argentina. Tohoku University; JapĂłnFil: Masumizu, Yuki. Tohoku University; JapĂłnFil: Indo, Yuhki. Tohoku University; JapĂłnFil: Islam, M. Aminul. Bangladesh Agricultural University; Bangladesh. Tohoku University; JapĂłnFil: Garcia Castillo, Valeria. Tohoku University; JapĂłn. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; ArgentinaFil: Ikeda Ohtsubo, Wakako. Tohoku University; JapĂłnFil: Suda, Yoshihito. Miyagi University; JapĂłnFil: Aso, Hisashi. Tohoku University; JapĂłnFil: Villena, Julio Cesar. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Tohoku University; JapĂłnFil: Kitazawa, Haruki. Tohoku University; JapĂł

    Efficient Selection of New Immunobiotic Strains With Antiviral Effects in Local and Distal Mucosal Sites by Using Porcine Intestinal Epitheliocytes

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    Previously, we evaluated the effect of the immunobiotic strain Lactobacillus rhamnosus CRL1505 on the transcriptomic response of porcine intestinal epithelial (PIE) cells triggered by the challenge with the Toll-like receptor 3 (TLR-3) agonist poly(I:C) and successfully identified a group of genes that can be used as prospective biomarkers for the screening of new antiviral immunobiotics. In this work, several strains of lactobacilli were evaluated according to their ability to modulate the expression of IFNα, IFNÎČ, RIG1, TLR3, OAS1, RNASEL, MX2, A20, CXCL5, CCL4, IL-15, SELL, SELE, EPCAM, PTGS2, PTEGES, and PTGER4 in PIE cells after the stimulation with poly(I:C). Comparative analysis of transcripts variations revealed that one of the studied bacteria, Lactobacillus plantarum MPL16, clustered together with the CRL1505 strain, indicating a similar immunomodulatory potential. Two sets of in vivo experiments in Balb/c mice were performed to evaluate L. plantarum MPL16 immunomodulatory activities. Orally administered MPL16 prior intraperitoneal injection of poly(I:C) significantly reduced the levels of the proinflammatory mediators tumor necrosis factor α (TNF-α), interleukin 6 (IL-6), and IL-15 in the intestinal mucosa. In addition, orally administered L. plantarum MPL16 prior nasal stimulation with poly(I:C) or respiratory syncytial virus infection significantly decreased the levels of the biochemical markers of lung tissue damage. In addition, reduced levels of the proinflammatory mediators TNF-α, IL-6, and IL-8 were found in MPL16-treated mice. Improved levels of IFN-ÎČ and IFN-Îł in the respiratory mucosa were observed in mice treated with L. plantarum MPL16 when compared to control mice. The immunological changes induced by L. plantarum MPL16 were not different from those previously reported for the CRL1505 strain in in vitro and in vivo studies. The results of this work confirm that new immunobiotic strains with the ability of stimulating both local and distal antiviral immune responses can be efficiently selected by evaluating the expression of biomarkers in PIE cells.Fil: AlbarracĂ­n, Leonardo Miguel. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Tohoku University; JapĂłnFil: Garcia-Castillo, Valeria. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Universidad de ConcepciĂłn; ChileFil: Masumizu, Yuki. Tohoku University; JapĂłnFil: Indo, Yuhki. Tohoku University; JapĂłnFil: Islam, Md Aminul. Tohoku University; JapĂłnFil: Suda, Yoshihito. Miyagi University; JapĂłnFil: GarcĂ­a Cancino, Apolinaria. Universidad de ConcepciĂłn; ChileFil: Aso, Hisashi. Tohoku University; JapĂłnFil: Takahashi, Hideki. Tohoku University; JapĂłnFil: Kitazawa, Haruki. Tohoku University; JapĂłnFil: Villena, Julio Cesar. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas. Centro CientĂ­fico TecnolĂłgico Conicet - TucumĂĄn. Centro de Referencia para Lactobacilos; Argentina. Tohoku University; JapĂł

    Mediastinal Malignant Lymphoma Difficult to Diagnose : A Patient Report

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    We report a 58-year-old man who suffered from shortness of breath on exertion with wheezing. A chest enhanced computed tomography (CT) scan showed an irregular tumor in the middle mediastinum involving the right main pulmonary artery, vena cava superior and right main bronchus. Transbronchial lung biopsy and endobronchial ultrasoundguided transbronchial needle aspiration yielded no evidence for a pathological diagnosis of malignancy. We employed mediastinoscopy, which led to a diagnosis of lymphoid reactive change. 18F-fluorodeoxyglucose-positron emission omography (FDG-PET) scan revealed a high FDG uptake in the tumor lesion. Because the CT scan and FDG-PET findings led to a marked suspicion of malignancy, we decided to attempt biopsy by a video-assisted thoracoscopic surgery (VATS) approach. Flow cytometry showed a monoclonal pattern, and the final diagnosis was mediastinal follicular lymphoma both pathologically and immunohistologically. The patient achieved a complete remission by following chemotherapy. Lowgrade malignancy type of lymphoma such as follicular lymphoma that generally contains small-cell components often presents a diagnostic challenge and the VATS approach was effective for the diagnosis of such type of mediastinal lymphoma
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