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‘Forever’ molecules arrange themselves into cell-like structures
Evolutionary origins of self-sustained Kai protein circadian oscillators in cyanobacteria
Research on pedestrian detection method based on multispectral intermediate fusion using YOLOv7
Abstract This study is based on the YOLOv7 object detection framework and conducts comparative experiments on early fusion, halfway fusion, and late fusion for multispectral pedestrian detection tasks. Traditional pedestrian detection tasks typically use image data from a single sensor or modality. However, in the field of multispectral remote sensing, fusing multi-source data is crucial for improving detection performance. This study aims to explore the impact of different fusion strategies on multispectral object detection performance and identify the most suitable fusion approach for multispectral data. Firstly, we implemented early fusion experiments by merging multispectral data with visible light data at the network’s input layer. Next, halfway fusion experiments were conducted, merging multispectral data and visible light data at the network’s middle layers. Finally, late fusion experiments were performed by merging multispectral data and visible light data at the network’s high layers. A comprehensive comparison of the experimental results for various fusion strategies reveals that the halfway fusion strategy exhibits outstanding performance in multispectral pedestrian detection tasks, achieving high detection accuracy and relatively fast speed.
An ultrasensitive method for detection of cell-free RNA
Chemotactic Zn micromotor for treatment of high blood ammonia-associated hepatic encephalopathy
Drug distribution in dorsal root ganglion after peripheral application of Lidocaine patch
High-resolution CTCF footprinting reveals impact of chromatin state on cohesin extrusion
Abstract Cohesin-mediated DNA loop extrusion enables gene regulation by distal enhancers through the establishment of chromosome structure and long-range enhancer-promoter interactions. The best characterized cohesin-related structures, such as topologically associating domains (TADs) anchored at convergent CTCF binding sites, represent static conformations. Consequently, loop extrusion dynamics remain poorly understood. To better characterize static and dynamically extruding chromatin loop structures, we use MNase-based 3D genome assays to simultaneously determine CTCF and cohesin localization as well as the 3D contacts they mediate. Here we present CTCF Analyzer (with) Multinomial Estimation (CAMEL), a tool that identifies CTCF footprints at near base-pair resolution in CTCF MNase HiChiP. We also use Region Capture Micro-C to identify a CTCF-adjacent footprint that is attributed to cohesin occupancy. We leverage this substantial advance in resolution to determine that the fully extruded (CTCF-CTCF loop) state is rare genome-wide with locus-specific variation from ~1–10%. We further investigate the impact of chromatin state on loop extrusion dynamics and find that active regulatory elements impede cohesin extrusion. These findings support a model of topological regulation whereby the transient, partially extruded state facilitates enhancer-promoter contacts that can regulate transcription.
Longitudinal assessment of cortical motor function in amyotrophic lateral sclerosis
Inductive effects in molecular contacts enable wide-bandgap perovskite cells for efficient perovskite/TOPCon tandems
Occurrence and assessment of antibiotic resistance and virulence of Enterococcus spp. strains isolated from fecal samples of wild animals
Towards global reaction feasibility and robustness prediction with high throughput data and bayesian deep learning
Clinical outcomes following endometrial receptivity assessment-guided personalized euploid embryo transfer in patients with previous implantation failures
Abstract This study aimed to investigate potential improvements when implementing endometrial receptivity analysis (ERA)-guided personalized embryo transfer (pET) using euploid blastocyst in patients with one or more previous failed embryo transfers. A total of 270 patients with one or more previous failed embryo transfers were enrolled between 2017 and 2021 in this multicenter retrospective study. These patients were divided into two groups: study cases (ERA-guided pET) (n = 200) or controls (standard embryo transfer) (n = 70). Clinical outcomes compared were pregnancy rate (PR), implantation rate (IR), ongoing pregnancy rate (OPR), and live birth rate (LBR). Clinical results in terms of PR, OPR, and LBR were significantly higher when performing ERA-guided pET (PR: 65.0%; OPR: 49.0%; LBR: 48.2%) compared to standard embryo transfer (PR: 37.1%; OPR: 27.1%; LBR: 26.1%) (P < 0.01). Logistic regression was applied to examine the correlation between ERA and the primary outcome measured, OPR, including demographic variables as covariates. The effect of ERA was significantly associated with OPR (P = 0.002; aOR 2.8, 95% CI 1.5–5.5); furthermore, OPR decreased significantly when body mass index (BMI) values increased (P = 0.04; aOR 0.9, 95% CI 0.8–0.98). These findings support the potential of ERA-guided pET to improve clinical outcomes and address the challenges encountered by patients with previous implantation failures.
Globally interconnected solar-wind system addresses future electricity demands
Luteolin targets MKK4 to attenuate particulate matter-induced MMP-1 and inflammation in human keratinocytes
Abstract Particulate matter (PM) is an environmental pollutant that causes premature skin aging and inflammation. In the present study, we investigated the protective effects of luteolin, a bioactive flavonoid, against PM-induced skin damage in human keratinocytes (HaCaT cells). We examined the antioxidant and anti-inflammatory properties of luteolin, focusing on its ability to inhibit key markers of skin aging and inflammation, specifically matrix metalloproteinase-1 (MMP-1) and cyclooxygenase-2 (COX-2). The results demonstrated that luteolin effectively suppressed PM-induced MMP-1 and COX-2 expression and reduced the production of the proinflammatory cytokine IL-6. Mechanistically, luteolin inhibited the activation of AP-1 and NF-κB pathways and decreased reactive oxygen species (ROS) levels in HaCaT cells. Additionally, luteolin binds directly to mitogen-activated protein kinase kinase (MKK) 4, inhibiting its kinase activity and subsequently reducing the phosphorylation of JNK1/2 and p38 mitogen-activated protein kinase. These findings suggest that luteolin can mitigate PM-induced skin aging and inflammation through multiple molecular pathways, highlighting its potential as a therapeutic agent to protect skin health.
Histone H1 deamidation facilitates chromatin relaxation for DNA repair
The impact of ancestral, genetic, and environmental influences on germline de novo mutation rates and spectra
Abstract De novo germline mutation is an important factor in the evolution of allelic diversity and disease predisposition in a population. Here, we study the influence of genetically-inferred ancestry and environmental factors on de novo mutation rates and spectra. Using a genetically diverse sample of ~10 K whole-genome sequenced trios, one of the largest de novo mutation catalogues to date, we found that genetically-inferred ancestry is associated with modest but significant changes in both germline mutation rate and spectra across continental populations. These effects may be due to genetic or environmental factors correlated with ancestry. We find epidemiological evidence that cigarette smoking is significantly associated with increased de novo mutation rate, but it does not mediate the observed ancestry effects. Investigation of several other potential mutagenic factors using Mendelian randomisation showed no consistent effects, except for age at menopause, where factors increasing this corresponded to a reduction in de novo mutation rate. Overall, our study sheds light on factors influencing de novo mutation rates and spectra.
Structural and functional thalamic alterations in major depressive disorder with comorbid chronic pain
Full-color processible afterglow organic small molecular glass
Abstract Organic afterglow materials, known for their unique luminescent properties and diverse applications, have garnered significant attention in recent years. However, developing long-lasting, high-efficiency, full-color afterglow systems and exploring simple materials processing strategies for new applications are still challenging in this field. Herein, we rationally design a processable molecular glass and employ it as a host in a host-guest strategy to address these challenges. By strategically modifying the host via othyl-methylation, we successfully create a molecular glass and capture its temperature-dependent, processable viscous supercooled liquid state. High-efficiency full color from violet to near-infrared afterglow systems with ultralong lifetimes are developed by doping varied structural dopants. The underlying glass-forming and afterglow mechanisms are also clearly elucidated and verified. Moreover, the excellent glass-forming ability of the host and its viscous supercooled liquid enabled the glass system for large-area fabrication, shaping of objects with diverse 3D structures, and creation of flexible, meter-long afterglow fibers. This work offers significant potential for practical applications in advanced textiles, displays, and other fields.