Proc Natl Acad Sci U S A
November 2024
Mechanisms controlling the movement of the cerebrospinal fluid (CSF) toward peripheral nerves are poorly characterized. We found that, in addition to the foramina Magendie and Luschka for CSF flow toward the subarachnoid space and glymphatic system, CSF outflow could also occur along periaxonal spaces (termed "PAS pathway") from the spinal cord to peripheral organs, such as the liver and pancreas. When interrogating the latter route, we found that serotonin, acting through 5-HT receptors expressed in ependymocytes that line the central canal, triggered Ca signals to induce polymerization of F-actin, a cytoskeletal protein, to reduce the volume of ependymal cells.
View Article and Find Full Text PDFIn this study, dopamine (DA) was used as the acyl receptor to modify zein through transglutaminase (TGase)-mediated reaction, producing self-adhesive zein (zein-DA complex). The structure of zein-DA complex was characterized by Fourier transform infrared spectrum (FT-IR), H nuclear magnetic resonance spectrum (H NMR), and circular dichroism spectrum (CD), revealing the successful grafting of catechol structure of DA to zein. The results of SDS-PAGE demonstrated that zein-DA complex exhibited great ability of self-polymerization.
View Article and Find Full Text PDFTriple-negative breast cancer (TNBC) is a highly aggressive subtype of breast cancer, lacking targeted therapeutic options. Hydrogels, particularly gelatin methacrylate (GelMA), have emerged as promising materials for localized drug delivery due to their biocompatibility and tunable properties. This study investigates a dual-delivery system for enhancing the treatment efficacy of triple-negative breast cancer (TNBC) using a combination of extracellular vesicles (EVs) derived from Citrus limon L.
View Article and Find Full Text PDFBackground: Extracorporeal shock wave therapy (ESWT) is increasingly being recognized as an advantageous alternative for treating non-union due to its efficacy and minimal associated complications. Non-union following Bernese periacetabular osteotomy (PAO) is particularly challenging, with a reported 55% delayed union and 8% non-union. Herein, we highlight a unique case of ischial non-union post-PAO treated successfully with a structured ESWT regimen.
View Article and Find Full Text PDFObjective: To compare the diagnostic performance of pancreatic lesions using percutaneous ultrasound (US)-guided core needle biopsy (CNB) with and without contrast-enhanced ultrasound (CEUS).
Method: The patients were divided into two groups, US and CEUS group, based on whether CEUS was performed prior to biopsy. Before and after propensity score matching (PSM), the CNB-relevant characteristics of the two groups, including the first puncture success rate, the number of sampling, complication rate, type of complications, and degree of abdominal pain, were compared.
Objective: To investigate the value of 7E instructional model in the teaching of nursing students in nursing clinical probation.
Methods: One hundred and fifty-nine nursing undergraduates of the class of 2018 who were on probation in our hospital from November 2020 to June 2021 were selected as the control group by convenience sampling, and the traditional teaching model was adopted; an additional 171 nursing undergraduates of the class of 2019 who were on clinical probation in the same hospital from November 2021 to June 2022 were selected as the experimental group, and the 7E instructional model was adopted, including elicit, engagement, exploration, explain, elaborate, evaluate and extend.
Results: After the intervention, the experimental group was higher than the control group in theoretical knowledge scores (59.
Introduction: Liver transplantation is considered an effective treatment for end-stage liver disease. Laparoscopic donor hepatectomy (LDH) has become a new standard procedure. And it is important to minimize the pain of the donor.
View Article and Find Full Text PDFThe tumor microenvironment (TME) orchestrates a complex interplay between tumor cells and immune cells, crucially modulating the immune response. This review delves into the pivotal role of metabolic reprogramming in the TME, highlighting how tumor-derived metabolites influence T lymphocyte functionality and the efficacy of cancer immunotherapies. Focusing on the diverse roles of these metabolites, we examine how lactate, lipids, amino acids, and other biochemical signals act not only as metabolic byproducts but as regulatory agents that can suppress or potentiate T cell-mediated immunity.
View Article and Find Full Text PDFInfectious laryngotracheitis virus (ILTV) exhibits a cascade expression pattern of encoded genes, and is the only immediate-early gene of ILTV, which plays a crucial role in initiating the subsequent viral genes. Therefore, studying the transcriptional regulation mechanism of holds promise for effectively blocking ILTV infection and spread. Host transcriptional factors p53 and Fos are proven to regulate a variety of viral infections, and our previous studies have demonstrated their synergistic effects in regulating ILTV infection.
View Article and Find Full Text PDFThe karst landform in Yunnan Province, China, represents one of the most biodiverse regions for . Previous research has revealed that the karst forests in this province host a greater diversity of than previously acknowledged. However, substantial fundamental data essential for taxonomic and biogeographical studies are lacking.
View Article and Find Full Text PDFAnimal coloration offers a unique opportunity to explore the evolutionary mechanisms underlying phenotypic diversity. Conspicuous coloration caused by pigments plays a crucial role in social signaling across multiple species by conveying information about individual quality, social ranks, or reproductive condition. Nevertheless, most previous studies have focused predominantly on colors produced by the exogenous pigments-carotenoids.
View Article and Find Full Text PDFObjective: Cardiac arrest (CA) is one of the most severe complications in patients with intracerebral hemorrhage (ICH), increasing the risk of death. This study explored the factors influencing CA occurrence and its resuscitation characteristics in ICH patients.
Methods: Data were retrieved from the Chinese Stroke Center Alliance database.
Serum hepatitis B core-related antigen (HBcrAg) is considered a surrogate marker of the amount and activity of intrahepatic covalently closed circular DNA. This study aimed to explore the prognostic value of HBcrAg on patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) after curative hepatectomy undergoing antiviral therapy (AVT). Data of 949 consecutive patients with HBV-related HCC undergoing curative resection between 2010 and 2013 were reviewed.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Copper (Cu) is a transition metal that plays crucial roles in cellular metabolism. Cu homeostasis is upregulated in many cancers and contributes to tumorigenesis. However, therapeutic strategies to target Cu homeostasis in cancer cells are rarely explored because small molecule Cu chelators have poor binding affinity in comparison to the intracellular Cu chaperones, enzymes, or ligands.
View Article and Find Full Text PDFBackground: Lgr5-positive cells located in the basal layer of crypts have self-regenerative and proliferative differentiation potentials of intestinal stem cells (ISCs), maintaining a balance of regeneration-repair in mucosal epithelium. However, the mechanisms of mucosal repair that are regulated by ISCs in ulcerative colitis (UC) remain unclear.
Method: Colon tissues from patients with UC were collected to test β-catenin and Notch1 expression by using Western blot and quantitative real-time polymerase chain reaction (PCR).
Background: Attractive targeted sugar baits (ATSBs) have the potential to significantly reduce infective female Anopheles mosquitoes in arid areas, such as in Northern Mali. Malaria is epidemic in the north due to the limited viability of Anopheles species in the desert climate. The goal of this study was to determine of the effect of ATSB on the number of older female An.
View Article and Find Full Text PDFThe efficient synthesis of the pyrrolo[4,3,2-]quinoline core of the lymphostin family (compound ) has been accomplished in 7 steps and 18.6% overall yield, providing an efficient method for the total synthesis and structural modification of the lymphostin family. Compound showed potent inhibitory activities against PI3K/mTOR in the nanomolar range and activity against human colorectal cancer cell lines comparable to that of oxaliplatin, which could be recognized as a novel lead compound for cancer therapy.
View Article and Find Full Text PDFCD8 T cells are integral to the effective management of cancer and infectious diseases due to their cytotoxic functions. The efficacy of these cells is profoundly influenced by their metabolic state, which regulates their activation, differentiation, and longevity. Accordingly, the modulation of metabolic pathways within CD8 T cells is crucial for enhancing the effectiveness of T cell-based immunotherapy.
View Article and Find Full Text PDFIEEE Trans Neural Netw Learn Syst
October 2024
Context-aware emotion recognition (CAER) leverages comprehensive scene information, including facial expressions, body postures, and contextual background. However, current studies predominantly rely on facial expressions, body postures, and global contextual features; the interaction between the agents (target individuals) and other objects in the scene is usually absent or incomplete. In this article, a three-dimensional view relationship-based CAER (TDRCer) method is proposed, which comprises two branches: the personal emotional branch (PEB) and the contextual emotional branch (CEB).
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