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Autotaxin (ATX) converts lysophosphatidylcholine and sphingosyl-phosphorylcholine into lysophosphatidic acid and sphingosine 1-phosphate, respectively. Despite the pivotal function of ATX in lipid metabolism, mechanisms by which ATX regulates immune and inflammatory disorders remain elusive. Here, using myeloid cell lineage-restricted Atx knockout mice, we show that Atx deficiency disrupts membrane microdomains and lipid rafts, resulting in the inhibition of Toll-like receptor 4 (TLR4) complex formation and the suppression of adaptor recruitment, thereby inhibiting TLR4-mediated responses in macrophages. Accordingly, TLR4-induced innate immune functions, including phagocytosis and iNOS expression, are attenuated in Atx-deficient macrophages. Consequently, Atx-/- mice exhibit a higher bacterial prevalence in the intestinal mucosa compared to controls. When combined with global Il10-/- mice, which show spontaneous colitis due to the translocation of luminal commensal microbes into the mucosa, myeloid cell lineage-restricted Atx knockout accelerates colitis development compared to control littermates. Collectively, our data reveal that Atx deficiency compromises innate immune responses, thereby promoting microbe-associated gut inflammation.Smart molecular crystals with light-driven mechanical responses have received interest owing to their potential uses in molecular machines, artificial muscles, and biomimetics. However, challenges remain in control over both the dynamic photo-mechanical behaviors and static photonic properties of molecular crystals based on the same molecule. Herein, we show the construction of isostructural co-crystals allows their light-induced cracking and jumping behaviors (photosalient effect) to be controlled. Hydrogen-bonded co-crystals from 4-(1-naphthylvinyl)pyridine (NVP) with co-formers (tetrafluoro-4-hydroxybenzoic acid (THA) and tetrafluorobenzoic acid (TA)) crystallize as isostructural crystals, but have different static and dynamic photo-mechanical behaviors. These differences are due to alternations in the orientation of NVP and hydrogen-bonding modes of the co-formers. After light activation, the 1D NVP-TA crystal splits and shears off within 1 s. For NVP-THA, its photostability and high quantum yield give novel photonic properties, including low optical waveguide loss, highly polarized anisotropy, and efficient up-conversion fluorescence.
During the first wave of the influenza A(H1N1)pdm09 pandemic in England in 2009, morbidity and mortality were higher in patients of South Asian (Indian, Pakistani or Bangladeshi) ethnic minority groups.
This study aims to provide insights in the representation of this group among reported cases, indicating susceptibility and exposure.
All laboratory-confirmed cases including basic demographic and limited clinical information that were reported to the FluZone surveillance system between April and October 2009 were retrieved. Missing ethnicity data were imputed using the previously developed and validated South Asian Names and Group Recognition Algorithm (SANGRA). Differences between ethnic groups were calculated using chi-square, log-rank and t tests and rate ratios. Geographic clustering was compared using Ripley's K functions.
SANGRA identified 2447 (28%) of the total of 8748 reported cases as South Asian. South Asian cases were younger (P<.001), more often male (P=.002) and more often from deprivedness to ensure appropriate prevention and care.
Cognitive impairment, characterised by predominant executive dysfunction and visuospatial deficit, is frequently observed in Parkinson's disease (PD) and may lead to mild cognitive impairment (PD-MCI) and dementia (PD-D). The clock-drawing test (CDT) is a rapid cognitive evaluation that is appropriate for screening frontoparietal lobe dysfunction. This study aimed to evaluate the screening performance of the Six-item Clock-Drawing Scoring System (6-CDSS) in detecting cognitive impairment in PD patients.
A retrospective analysis of free-drawn clocks from 136 PD patients was performed. The presence of cognitive impairment and dementia was documented by neurologists according to the standard diagnostic criteria. Diagnostic performance and the optimal screening cut-off scores for cognitive impairment and dementia using the 6-CDSS were determined.
One hundred and thirteen patients were documented as having PD with cognitive impairment (PD-CI). Of those, 39 were diagnosed as probable PD-D and 74 with PD-MCI. The optimal screening cut-off scores for PD-CI were 4/5 and 1/2 for probable PD-D. The area under the receiver operating characteristic curve was 0.88 and 0.91, respectively. Multiple regression analysis revealed that low education levels, poor activity of daily living, and older age were associated with low 6-CDSS scores.
CDT scoring using the 6-CDSS is a reliable system to screen cognitive impairment in PD and may serve as a simple screening tool for PD-D in clinical practice.
CDT scoring using the 6-CDSS is a reliable system to screen cognitive impairment in PD and may serve as a simple screening tool for PD-D in clinical practice.The actin-binding protein Girdin is a hub protein that interacts with multiple proteins to regulate motility and Akt and trimeric G protein signaling in cancer cells. Girdin expression correlates with poor outcomes in multiple human cancers. However, those findings are not universal, as they depend on study conditions. Those data suggest that multiple aspects of Girdin function and its role in tumor cell responses to anticancer therapeutics must be reconsidered. In the present study, we found that Girdin is involved in DNA damage-induced cancer cell apoptosis. Selleck SMI-4a An esophageal cancer cell line that exhibited high Girdin expression showed a marked sensitivity to UV-mediated DNA damage compared to a line with low Girdin expression. When transcriptional activation of endogenous Girdin was mediated by an engineered CRISPR/Cas9 activation system, sensitivity to DNA damage increased in both stationary and migrating HeLa cancer cells. High Girdin expression was associated with dysregulated cell cycle progression and prolonged G1 and M phases.
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