670 results on '"Long, Gl"'
Search Results
2. PROTEIN-C DEFICIENCY - A DATABASE OF MUTATIONS - FOR THE PROTEIN C-AND-S SUBCOMMITTEE OF THE SCIENTIFIC AND STANDARDIZATION COMMITTEE OF THE INTERNATIONAL SOCIETY ON THROMBOSIS AND HEMOSTASIS
- Author
-
Reitsma, Ph, Poort, Sr, Bernardi, Francesco, Gandrille, S, Long, Gl, Sala, N, and Cooper, Dn
- Published
- 1993
3. Evaluation of new flexible bipolar hemostatic forceps in a randomized study
- Author
-
Bergström, M, primary, Park, P-O, additional, Cunningham, C, additional, Long, GL, additional, Vakharia, OJ, additional, Bakos, GJ, additional, Bally, KR, additional, Swain, P, additional, and Rothstein, RI, additional
- Published
- 2008
- Full Text
- View/download PDF
4. Proteolytic events that regulate factor V activity in whole plasma from normal and activated protein C (APC)-resistant individuals during clotting: an insight into the APC-resistance assay
- Author
-
Kalafatis, M, primary, Haley, PE, additional, Lu, D, additional, Bertina, RM, additional, Long, GL, additional, and Mann, KG, additional
- Published
- 1996
- Full Text
- View/download PDF
5. Comparison of activated protein C/protein S-mediated inactivation of human factor VIII and factor V
- Author
-
Lu, D, primary, Kalafatis, M, additional, Mann, KG, additional, and Long, GL, additional
- Published
- 1996
- Full Text
- View/download PDF
6. Loss of membrane-dependent factor Va cleavage: a mechanistic interpretation of the pathology of protein CVermont
- Author
-
Lu, D, primary, Kalafatis, M, additional, Mann, KG, additional, and Long, GL, additional
- Published
- 1994
- Full Text
- View/download PDF
7. Protein CVermont: symptomatic type II protein C deficiency associated with two GLA domain mutations
- Author
-
Bovill, EG, primary, Tomczak, JA, additional, Grant, B, additional, Bhushan, F, additional, Pillemer, E, additional, Rainville, IR, additional, and Long, GL, additional
- Published
- 1992
- Full Text
- View/download PDF
8. Demonstration of osteonectin mRNA in megakaryocytes: the use of the polymerase chain reaction
- Author
-
Villarreal, XC, primary, Grant, BW, additional, and Long, GL, additional
- Published
- 1991
- Full Text
- View/download PDF
9. A 5.3-kb deletion including exon XIII of the protein S alpha gene occurs in two protein S-deficient families [see comments]
- Author
-
Schmidel, DK, primary, Nelson, RM, additional, Broxson, EH Jr, additional, Comp, PC, additional, Marlar, RA, additional, and Long, GL, additional
- Published
- 1991
- Full Text
- View/download PDF
10. Approaches to studying deaf and hearing students in higher education.
- Author
-
Richardson JTE, MacLeod-Gallinger J, McKee BG, and Long GL
- Abstract
We conducted a survey to compare the responses of 149 deaf students and 121 hearing students taking the same courses to a shortened and adapted version of the Approaches to Studying Inventory. In general, the impact of deafness on approaches to studying was relatively slight, and deaf students appeared to be at least as capable as hearing students of engaging with the underlying meaning of the materials to be learned. We used factor analysis to identify eight scales, and differences between the two groups were statistically significant on four of these scales. Discriminant analysis indicated that deaf students found it more difficult to relate ideas on different topics and that this was more marked in those who preferred to communicate using sign. However, deaf students were more likely than hearing students to adopt a critical approach and to analyze the internal structure of the topics studied. [ABSTRACT FROM AUTHOR]
- Published
- 2000
- Full Text
- View/download PDF
11. A theoretical scheme for multi-user quantum key distribution with N Einstein-Podolsky-Rosen pairs on a passive optical network
- Author
-
Fu-Guo Deng, Liu, Xs, Ma, Yj, Xiao, L., and Long, Gl
12. Approaches to studying in deaf and hearing students in higher education.
- Author
-
Richardson, JTE, Richardson, John T.E., MacLeod-Gallinger, J, MacLeod-Gallinger, Janet, McKee, BG, McKee, Barbara G., Long, GL, and Long, Gary L.
- Subjects
EDUCATION of the deaf ,MEANS of communication for deaf people ,METACOGNITION ,LEARNING strategies - Abstract
We conducted a survey to compare the responses of 149 deaf students and 121 hearing students taking the same courses to a shortened and adapted version of the Approaches to Studying Inventory. In general, the impact of deafness on approaches to studying was relatively slight, and deaf students appeared to be at least as capable as hearing students of engaging with the underlying meaning of the materials to be learned. We used factor analysis to identify eight scales, and differences between the two groups were statistically significant on four of these scales. Discriminant analysis indicated that deaf students found it more difficult to relate ideas on different topics and that this was more marked in those who preferred to communicate using sign. However, deaf students were more likely than hearing students to adopt a critical approach and to analyze the internal structure of the topics studied. [ABSTRACT FROM AUTHOR]
- Published
- 2000
13. Research landmarks on the 60th anniversary of Epstein-Barr virus.
- Author
-
Zhong LY, Xie C, Zhang LL, Yang YL, Liu YT, Zhao GX, Bu GL, Tian XS, Jiang ZY, Yuan BY, Li PL, Wu PH, Jia WH, Münz C, Gewurz BE, Zhong Q, Sun C, and Zeng MS
- Abstract
Epstein-Barr virus (EBV), the first human oncovirus discovered in 1964, has become a focal point in virology, immunology, and oncology because of its unique biological characteristics and significant role in human diseases. As we commemorate the 60th anniversary of EBV's discovery, it is an opportune moment to reflect on the major advancements in our understanding of this complex virus. In this review, we highlight key milestones in EBV research, including its virion structure and life cycle, interactions with the host immune system, association with EBV-associated diseases, and targeted intervention strategies., (© 2024. Science China Press.)
- Published
- 2024
- Full Text
- View/download PDF
14. AXIN1 boosts antiviral response through IRF3 stabilization and induced phase separation.
- Author
-
Dai DL, Xie C, Zhong LY, Liu SX, Zhang LL, Zhang H, Wu XP, Wu ZM, Kang K, Li Y, Sun YM, Xia TL, Zhang CS, Zhang A, Shi M, Sun C, Chen ML, Zhao GX, Bu GL, Liu YT, Huang KY, Zhao Z, Li SX, Zhang XY, Yuan YF, Wen SJ, Zhang L, Li BK, Zhong Q, and Zeng MS
- Subjects
- Humans, Carcinoma, Hepatocellular genetics, Carcinoma, Hepatocellular immunology, Carcinoma, Hepatocellular virology, Carcinoma, Hepatocellular pathology, Immunity, Innate genetics, Liver Neoplasms genetics, Liver Neoplasms virology, Liver Neoplasms immunology, Liver Neoplasms pathology, Phosphorylation, Protein Serine-Threonine Kinases genetics, Protein Serine-Threonine Kinases immunology, Animals, Ubiquitination genetics, Hepatitis B virus genetics, Hepatitis B virus immunology, HEK293 Cells, Mice, Antiviral Agents pharmacology, Phase Separation, Peptide Fragments, Sialoglycoproteins, Axin Protein genetics, Axin Protein immunology, Interferon Regulatory Factor-3 genetics, Interferon Regulatory Factor-3 immunology
- Abstract
Axis inhibition protein 1 (AXIN1), a scaffold protein interacting with various critical molecules, plays a vital role in determining cell fate. However, its impact on the antiviral innate immune response remains largely unknown. Here, we identify that AXIN1 acts as an effective regulator of antiviral innate immunity against both DNA and RNA virus infections. In the resting state, AXIN1 maintains the stability of the transcription factor interferon regulatory factor 3 (IRF3) by preventing p62-mediated autophagic degradation of IRF3. This is achieved by recruiting ubiquitin-specific peptidase 35 (USP35), which removes lysine (K) 48-linked ubiquitination at IRF3 K366. Upon virus infection, AXIN1 undergoes a phase separation triggered by phosphorylated TANK-binding kinase 1 (TBK1). This leads to increased phosphorylation of IRF3 and a boost in IFN-I production. Moreover, KYA1797K, a small molecule that binds to the AXIN1 RGS domain, enhances the AXIN1-IRF3 interaction and promotes the elimination of various highly pathogenic viruses. Clinically, patients with HBV-associated hepatocellular carcinoma (HCC) who show reduced AXIN1 expression in pericarcinoma tissues have low overall and disease-free survival rates, as well as higher HBV levels in their blood. Overall, our findings reveal how AXIN1 regulates IRF3 signaling and phase separation-mediated antiviral immune responses, underscoring the potential of the AXIN1 agonist KYA1797K as an effective antiviral agent., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
15. One-Photon-Interference Quantum Secure Direct Communication.
- Author
-
Li XJ, Wang M, Pan XB, Zhang YR, and Long GL
- Abstract
Quantum secure direct communication (QSDC) is a quantum communication paradigm that transmits confidential messages directly using quantum states. Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. To enhance the practicality and performance of MDI-QSDC protocols, we propose a one-photon-interference MDI QSDC (OPI-QSDC) protocol which transcends the need for quantum memory, ideal single-photon sources, or entangled light sources. The security of our OPI-QSDC protocol has also been analyzed using quantum wiretap channel theory. Furthermore, our protocol could double the distance of usual prepare-and-measure protocols, since quantum states sending from adjacent nodes are connected with single-photon interference, which demonstrates its potential to extend the communication distance for point-to-point QSDC.
- Published
- 2024
- Full Text
- View/download PDF
16. Integrated volatile metabolome and transcriptome analyses provide insights into the warm aroma formation elicited by methyl jasmonate in carrot root.
- Author
-
Wang GL, Wu JQ, Chen YY, Xu YJ, An YH, Ren XQ, and Xiong AS
- Abstract
Carrot is a highly significant vegetable cultivated worldwide and possesses a unique aroma with abundant edible and medicinal values. However, it remains largely unknown whether jasmonic acid could regulate aroma formation in carrot. Here, an integrated analysis of the volatile metabolome and transcriptome of carrot roots exposed to different concentrations of methyl jasmonate (MeJA) was performed. The results revealed 1,227 volatile organic compounds and 972 differential accumulated metabolites, with terpenes representing the largest portion. MeJA treatment evidently increased the relative odor activity values as well as the accumulation of most volatile compounds. In addition, 4,787 differentially expressed genes were identified and subjected to function enrichment analysis, indicating a role of terpene biosynthesis and metabolism in response to MeJA application. A network consisting of 4,680 transcription factor-structural pairs that showed highly significant positive correlations was constructed, which may be utilized as genetic targets for examining terpene accumulation and aroma formation elicited by methyl jasmonate. The results from the present work substantially improved our understanding of MeJA-mediated aroma formation in carrot., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Wang, Wu, Chen, Xu, An, Ren and Xiong.)
- Published
- 2024
- Full Text
- View/download PDF
17. Exposure to greenspaces sourced soils improves mice gut microbiota.
- Author
-
Zhou GL, Xie Y, Zhang YD, Wang L, Xie YT, Qiu HL, Zhu XQ, Jiang JC, Yang Y, Xiang M, Dong GH, Zhou Y, Fan SJ, and Yang BY
- Abstract
Greenspaces are important components of our living environment and have been linked to various human health. However, the mechanisms underlying the linkages remain unclear. Enriching microbiota has emerged as a novel mechanism, but the corresponding evidence is still limited. We collected soil samples from forest land, grassland, and barren land in Zunyi City, southwestern China and prepared soil solutions. A total of 40 BALB/c mice were evenly divided into normal control group, model control group, forest soil group, grassland soil group, and barren land soil group. After establishing the pseudo germ-free mouse model, different soil solutions were administered through gavage, lasting for seven weeks. Fecal samples were collected and a 16S rRNA high-throughput sequencing analysis was performed. Then, alpha- and beta-diversity were calculated and employed to estimate the effects of soil exposures on mice gut microbial diversity and composition. Further, Linear Discriminant Analysis Effect Size (LEfSe) analysis was carried out to evaluate the effects of soil exposures on gut microbiota specific genera abundances and functional pathways. Compared to mice exposed to barren land soils, those exposed to soils sourced from forest land showed an increase of 0.43 and 70.63 units in the Shannon index and the Observed ASVs, respectively. In addition, exposure to soils sourced from forest land and grassland resulted in healthier changes (i.e., more short-chain fatty acids (SCFAs)-producing bacteria) in gut microbiota than those from barren land. Furthermore, mice exposed to forest soil and grassland soil showed enrichment in 5 and 3 pathways (e.g., butanoate metabolism) compared to those exposed to barren land soil, respectively. In conclusion, exposure to various greenspaces soils may modify the gut microbial communities of mice, potentially fostering a more beneficial microbiota profile. Further better-designed studies are needed to validate the current findings and to explore the effects of greenspace related gut microbiota on human health., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
18. Author Correction: Small molecule LX2343 ameliorates cognitive deficits in AD model mice by targeting both amyloid β production and clearance.
- Author
-
Guo XD, Sun GL, Zhou TT, Xu X, Zhu ZY, Rukachaisirikul V, Hu LH, and Shen X
- Published
- 2024
- Full Text
- View/download PDF
19. Coil Embolization Is Not Justified for Treating Patients with Veno-Occlusive Dysfunction: Case Series and Narrative Literature Review.
- Author
-
Chang KS, Chung CH, Chang YK, Hsu GL, Tsai MH, and Chueh JS
- Abstract
Introduction: Herein, we explore whether coil embolization (CE) is effective in treating veno-occlusive dysfunction (VOD). We present five cases with seven CE episodes and a narrative literature review. Methods: From 2013 to 2018, refractory impotence prompted five men to seek penile vascular stripping (PVS), although seven CE episodes were included. All received dual cavernosography in which erection-related veins and VOD were documented. PVS entailed the venous stripping of one deep dorsal vein and two cavernosal veins. The abridged five-item version of the International Index of Erectile Function (IIEF-5) score system and the erection hardness scale (EHS) were used, and yearly postoperative follow-ups were conducted via the Internet. Using Pub Med, a narrative literature review was performed on CE treatment for VOD or varicocele. Results: Inserted coils were scattered along the erection-related veins, including the deep dorsal veins (n = 4), periprostatic plexus (n = 5), iliac vein (n = 5), right pulmonary artery (n = 2), left pulmonary artery (n = 2), and right ventricle (n = 1). PVS resulted in some improvements in the IIEF-5 score and EHS scale. Six articles highly recommend CE treatment for VOD. All claimed it is a minimally invasive effective treatment for varicocele. Conclusions: CE is not justified as a VOD treatment, regardless of its viability in the treatment of varicocele.
- Published
- 2024
- Full Text
- View/download PDF
20. Lysosome-Targeted and pH-Activatable Phototheranostics for NIR-II Fluorescence Imaging-Guided Nasopharyngeal Carcinoma Phototherapy.
- Author
-
Li Z, Yang S, Xiao H, Kang Q, Li N, Wu GL, Tan S, Wang W, Fu Q, Tang X, Zhou J, Huang Y, Chen G, Tan X, and Yang Q
- Subjects
- Humans, Hydrogen-Ion Concentration, Animals, Mice, Infrared Rays, Phototherapy methods, Cell Line, Tumor, Nanoparticles chemistry, Photochemotherapy methods, Mice, Nude, Mice, Inbred BALB C, Nasopharyngeal Carcinoma therapy, Nasopharyngeal Carcinoma diagnostic imaging, Lysosomes metabolism, Theranostic Nanomedicine methods, Optical Imaging methods, Nasopharyngeal Neoplasms therapy, Nasopharyngeal Neoplasms diagnostic imaging
- Abstract
Currently, clinical therapeutic strategies for nasopharyngeal carcinoma (NPC) confront insurmountable dilemmas in which surgical resection is incomplete and chemotherapy/radiotherapy has significant side effects. Phototherapy offers a maneuverable, effective, and noninvasive pattern for NPC therapy. Herein, we developed a lysosome-targeted and pH-responsive nanophototheranostic for near-infrared II (NIR-II) fluorescence imaging-guided photodynamic therapy (PDT) and photothermal therapy (PTT) of NPC. A lysosome-targeted S-D-A-D-S-type NIR-II phototheranostic molecule (IRFEM) is encapsulated within the acid-sensitive amphiphilic DSPE-Hyd-PEG2k to form IRFEM@DHP nanoparticles (NPs). The prepared IRFEM@DHP exhibits a good accumulation in the acidic lysosomes for facilitating the release of IRFEM, which could disrupt lysosomal function by generating an amount of heat and ROS under laser irradiation. Moreover, the guidelines of NIR-II fluorescence enhance the accuracy of PTT/PDT for NPC and avoid damage to normal tissues. Remarkably, IRFEM@DHP enable efficient antitumor effects both in vitro and in vivo , opening up a new avenue for precise NPC theranostics.
- Published
- 2024
- Full Text
- View/download PDF
21. Compact In Situ Electrochemical NMR with Wireless and Anti-interference Strategy in Multiscenario Applications.
- Author
-
Wang LN, Wang XJ, Jin KX, Ni ZR, Cai WP, Lin GC, Wang X, Chen GL, Yang Y, Huang YQ, Qu XB, Sun HJ, Chen Z, and Cao SH
- Subjects
- Wireless Technology, Electrochemical Techniques, Magnetic Resonance Spectroscopy methods
- Abstract
The integration of electrochemistry with nuclear magnetic resonance (NMR) spectroscopy recently offers a powerful approach to understanding oxidative metabolism, detecting reactive intermediates, and predicting biological activities. This combination is particularly effective as electrochemical methods provide excellent mimics of metabolic processes, while NMR spectroscopy offers precise chemical analysis. NMR is already widely utilized in the quality control of pharmaceuticals, foods, and additives and in metabolomic studies. However, the introduction of additional and external connections into the magnet has posed challenges, leading to signal deterioration and limitations in routine measurements. Herein, we report an anti-interference compact in situ electrochemical NMR system (AICISENS). Through a wireless strategy, the compact design allows for the independent and stable operation of electrochemical NMR components with effective interference isolation. Thus, it opens an avenue toward easy integration into in situ platforms, applicable not only to laboratory settings but also to fieldwork. The operability, reliability, and versatility were validated with a series of biomimetic assessments, including measurements of microbial electrochemical systems, functional foods, and simulated drug metabolisms. The robust performance of AICISENS demonstrates its high potential as a powerful analytical tool across diverse applications.
- Published
- 2024
- Full Text
- View/download PDF
22. [The use of bronchial occlusion test in a preterm infant with severe bronchopulmonary dysplasia complicated by severe lobar emphysema].
- Author
-
Liu HJ, Guan RL, Qin X, Wang HZ, Zhang GL, Li JB, Ma L, Li L, Lu LW, Sun Y, and Zhang HY
- Subjects
- Humans, Infant, Newborn, Bronchi, Pneumonectomy, Bronchopulmonary Dysplasia etiology, Infant, Premature, Pulmonary Emphysema surgery
- Abstract
In infants with severe bronchopulmonary dysplasia (sBPD), severe pulmonary lobar emphysema may occur as a complication, contributing to significant impairment in ventilation. Clinical management of these infants is extremely challenging and some may require lobectomy to improve ventilation. However, prior to the lobectomy, it is very difficult to assess whether the remaining lung parenchyma would be able to sustain adequate ventilation postoperatively. In addition, preoperative planning and perioperative management are also quite challenging in these patients. This paper reports the utility of selective bronchial occlusion in assessing the safety and efficacy of lobectomy in a case of sBPD complicated by severe right upper lobar emphysema. Since infants with sBPD already have poor lung development and significant lung injury, lobectomy should be viewed as a non-traditional therapy and be carried out with extreme caution. Selective bronchial occlusion test can be an effective tool in assessing the risks and benefits of lobectomy in cases with sBPD and lobar emphysema. However, given the technical difficulty, successful application of this technique requires close collaboration of an experienced interdisciplinary team.
- Published
- 2024
- Full Text
- View/download PDF
23. Emergent Penile Venous Stripping for Treating Adolescent Impotence.
- Author
-
Chang KS, Chang YK, Chung CH, Hsu GL, and Chueh JS
- Abstract
Introduction: Traditional anatomy-based penile venous surgery is deemed inadequate. Based on revolutionary insights into penile vasculature, penile venous stripping (PVS) shows promise in treating adolescent erectile dysfunction (AED). We aimed to report on this novel approach., Methods: We conducted a retrospective analysis of 223 individuals under 30 diagnosed with veno-occlusive dysfunction (VOD) between 2009 and 2023. Among them, 83 were diagnosed with AED and divided into the PVS ( n = 37) and no-surgery (NS, n = 46) groups. All participants had been dissatisfied with conventional therapeutic options. Dual pharmaco-cavernosography was the primary diagnostic modality. PVS involved stripping the deep dorsal vein and two cavernosal veins after securing each emissary's vein with a 6-0 nylon suture. Erection restoration was accessed using the abridged five-item version of the International Index of Erectile Function (IIEF-5) score system and the erection hardness scale (EHS). Statistical analysis was performed using IBM SPSS 21.0., Results: There were significant differences (both p < 0.001) between the preoperative and postoperative IIEF-5 scores in the PVS and NS groups (9.8 ± 3.0 vs. 20.4 ± 2.2; 9.9 ± 2.5 vs. 9.5 ± 2.1), as well as in the EHS scores (1.7 ± 0.7 vs. 3.5 ± 0.6 and 1.8 ± 0.5 vs. 1.3 ± 0.4). The satisfaction rate was 87.9% (29/33) in the PVS group and 16.7% (17/41) in the NS group., Conclusions: AED can be effectively treated using physiological methods, although larger patient cohorts are needed for validation.
- Published
- 2024
- Full Text
- View/download PDF
24. Multifunctional Polyoxometalates-Based Ionohydrogels toward Flexible Electronics.
- Author
-
Wang ZD, Bo K, Zhong CL, Xin YH, Lu GL, Sun H, Liang S, Liu ZN, and Zang HY
- Abstract
Multifunctional flexible electronics present tremendous opportunities in the rapidly evolving digital age. One potential avenue to realize this goal is the integration of polyoxometalates (POMs) and ionic liquid-based gels (ILGs), but the challenge of macrophase separation due to poor compatibility, especially caused by repulsion between like-charged units, poses a significant hurdle. Herein, the possibilities of producing diverse and homogenous POMs-containing ionohydrogels by nanoconfining POMs and ionic liquids (ILs) within an elastomer-like polyzwitterionic hydrogel using a simple one-step random copolymerization method, are expanded vastly. The incorporation of polyzwitterions provides a nanoconfined microenvironment and effectively modulates excessive electrostatic interactions in POMs/ILs/H
2 O blending system, facilitating a phase transition from macrophase separation to a submillimeter scale worm-like microphase-separation system. Moreover, combining POMs-reinforced ionohydrogels with a developed integrated self-powered sensing system utilizing strain sensors and Zn-ion hybrid supercapacitors has enabled efficient energy storage and detection of external strain changes with high precision. This work not only provides guidelines for manipulating morphology within phase-separation gelation systems, but also paves the way for developing versatile POMs-based ionohydrogels for state-of-the-art smart flexible electronics., (© 2024 Wiley‐VCH GmbH.)- Published
- 2024
- Full Text
- View/download PDF
25. Potent human monoclonal antibodies targeting Epstein-Barr virus gp42 reveal vulnerable sites for virus infection.
- Author
-
Zhao GX, Fang XY, Bu GL, Chen SJ, Sun C, Li T, Xie C, Wang Y, Li SX, Meng N, Feng GK, Zhong Q, Kong XW, Liu Z, and Zeng MS
- Subjects
- Humans, Animals, Antibodies, Neutralizing immunology, Antibodies, Viral immunology, Mice, Histocompatibility Antigens Class II immunology, Histocompatibility Antigens Class II metabolism, Viral Proteins immunology, B-Lymphocytes immunology, Herpesvirus 4, Human immunology, Epstein-Barr Virus Infections immunology, Epstein-Barr Virus Infections virology, Antibodies, Monoclonal immunology, Epitopes immunology
- Abstract
Epstein-Barr virus (EBV) is linked to various malignancies and autoimmune diseases, posing a significant global health challenge due to the lack of specific treatments or vaccines. Despite its crucial role in EBV infection in B cells, the mechanisms of the glycoprotein gp42 remain elusive. In this study, we construct an antibody phage library from 100 EBV-positive individuals, leading to the identification of two human monoclonal antibodies, 2B7 and 2C1. These antibodies effectively neutralize EBV infection in vitro and in vivo while preserving gp42's interaction with the human leukocyte antigen class II (HLA-II) receptor. Structural analysis unveils their distinct binding epitopes on gp42, different from the HLA-II binding site. Furthermore, both 2B7 and 2C1 demonstrate potent neutralization of EBV infection in HLA-II-positive epithelial cells, expanding our understanding of gp42's role. Overall, this study introduces two human anti-gp42 antibodies with potential implications for developing EBV vaccines targeting gp42 epitopes, addressing a critical gap in EBV research., Competing Interests: Declaration of interests The authors declare that patent applications have been filed covering 2B7 and 2C1 (patent application number: 2B7: CN202310261915.7, M.-S.Z., G.-X.Z., C.X., and G.-K.F. are the inventors; 2C1: CN202310261961.7, M.-S.Z., G.-X.Z., G.-L.B., and G.-K.F. are the inventors). The patent applicant is Sun Yat-sen University Cancer Center., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
26. Single-cell analysis of a progressive Rosai-Dorfman disease affecting the cerebral parenchyma: a case report.
- Author
-
Huang GH, Liu GL, Huang DZ, Diao XW, and Lv SQ
- Subjects
- Humans, Male, Histiocytes pathology, Proto-Oncogene Proteins p21(ras) genetics, Wnt-5a Protein metabolism, Wnt-5a Protein genetics, Middle Aged, Histiocytosis, Sinus pathology, Single-Cell Analysis
- Abstract
Neurologic Rosai-Dorfman disease (RDD) is a rare type of non-Langerhans cell histiocytosis that affects the central nervous system. Most neurologic RDDs grow like meningiomas, have clear boundaries, and can be completely resected. However, a few RDDs are invasive and aggressive, and no effective treatment options are available because the molecular mechanisms involved remain unknown. Here, we report a case of deadly and glucocorticoid-resistant neurologic RDD and explore its possible pathogenic mechanisms via single-cell RNA sequencing. First, we identified two distinct but evolutionarily related histiocyte subpopulations (the C1Q+ and SPP1+ histiocytes) that accumulated in the biopsy sample. The expression of genes in the KRAS signaling pathway was upregulated, indicating gain-of-function of KRAS mutations. The C1Q+ and SPP1+ histiocytes were highly differentiated and arrested in the G1 phase, excluding the idea that RDD is a lympho-histio-proliferative disorder. Second, although C1Q+ histiocytes were the primary RDD cell type, SPP1+ histiocytes highly expressed several severe inflammation-related and invasive factors, such as WNT5A, IL-6, and MMP12, suggesting that SPP1+ histiocytes plays a central role in driving the progression of this disease. Third, oligodendrocytes were found to be the prominent cell type that initiates RDD via MIF and may resist glucocorticoid treatment via the MDK and PTN signaling pathways. In summary, in this case, we report a rare presentation of neurologic RDD and provided new insight into the pathogenic mechanisms of progressive neurologic RDD. This study will also offer evidence for developing precision therapies targeting this complex disease., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
27. Xiaoqinglong decoction mitigates nasal inflammation and modulates gut microbiota in allergic rhinitis mice.
- Author
-
Liu HL, Chen HF, Wu YD, Yan YJ, He XC, Li ZZ, Ruan Y, and Wu GL
- Abstract
Introduction: Allergic rhinitis (AR) is a respiratory immune system disorder characterized by dysregulation of immune responses. Within the context of AR, gut microbiota and its metabolites have been identified as contributors to immune modulation. These microorganisms intricately connect the respiratory and gut immune systems, forming what is commonly referred to as the gut-lung axis. Xiaoqinglong Decoction (XQLD), a traditional Chinese herbal remedy, is widely utilized in traditional Chinese medicine for the clinical treatment of AR. In this study, it is hypothesized that the restoration of symbiotic microbiota balance within the gut-lung axis plays a pivotal role in supporting the superior long-term efficacy of XQLD in AR therapy. Therefore, the primary objective of this research is to investigate the impact of XQLD on the composition and functionality of the gut microbiota in a murine model of AR., Methods: An ovalbumin-sensitized mouse model to simulate AR was utilized, the improvement of AR symptoms after medication was investigated, and high-throughput sequencing was employed to analyze the gut microbiota composition., Results: XQLD exhibited substantial therapeutic effects in AR mice, notably characterized by a significant reduction in allergic inflammatory responses, considerable alleviation of nasal symptoms, and the restoration of normal nasal function. Additionally, following XQLD treatment, the disrupted gut microbiota in AR mice displayed a tendency toward restoration, showing significant differences compared to the Western medicine (loratadine) group., Discussion: This results revealed that XQLD may enhance AR allergic inflammatory responses through the regulation of intestinal microbiota dysbiosis in mice, thus influencing the dynamics of the gut-lung axis. The proposal of this mechanism provides a foundation for future research in this area., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Liu, Chen, Yun-Dang, Yan, He, Li, Ruan and Wu.)
- Published
- 2024
- Full Text
- View/download PDF
28. Microwave biosensor for the detection of growth inhibition of human liver cancer cells at different concentrations of chemotherapeutic drug.
- Author
-
Zhao JM, Wang YK, Shi BW, Wang YX, Jiang YF, Yang GL, Gao XD, and Qiang T
- Abstract
Cytotoxicity assays are crucial for assessing the efficacy of drugs in killing cancer cells and determining their potential therapeutic value. Measurement of the effect of drug concentration, which is an influence factor on cytotoxicity, is of great importance. This paper proposes a cytotoxicity assay using microwave sensors in an end-point approach based on the detection of the number of live cells for the first time. In contrast to optical methods like fluorescent labeling, this research uses a resonator-type microwave biosensor to evaluate the effects of drug concentrations on cytotoxicity by monitoring electrical parameter changes due to varying cell densities. Initially, the feasibility of treating cells with ultrapure water for cell counting by a microwave biosensor is confirmed. Subsequently, inhibition curves generated by both the CCK-8 method and the new microwave biosensor for various drug concentrations were compared and found to be congruent. This agreement supports the potential of microwave-based methods to quantify cell growth inhibition by drug concentrations., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Zhao, Wang, Shi, Wang, Jiang, Yang, Gao and Qiang.)
- Published
- 2024
- Full Text
- View/download PDF
29. Per- and polyfluoroalkyl substances (PFAS) exposure in plasma and their blood-brain barrier transmission efficiency-A pilot study.
- Author
-
Xie MY, Lin ZY, Sun XF, Feng JJ, Mai L, Wu CC, Huang GL, Wang P, Liu YW, Liu LY, and Zeng EY
- Subjects
- Humans, Pilot Projects, Middle Aged, Female, Adult, Male, Glioma, Aged, Environmental Pollutants blood, Environmental Exposure, Alkanesulfonic Acids blood, Brain metabolism, Blood-Brain Barrier metabolism, Fluorocarbons blood
- Abstract
Per- and polyfluoroalkyl substances (PFAS) have been shown to penetrate the blood-brain barrier (BBB) and accumulate in human brain. The BBB transmission and accumulation efficiency of PFAS, as well as the potential health risks from human co-exposure to legacy and emerging PFAS due to differences in transport efficiency, need to be further elucidated. In the present pilot study, 23 plasma samples from glioma patients were analyzed for 17 PFAS. The concentrations of PFAS in six paired brain tissue and plasma samples were used to calculate the BBB transmission efficiency of PFAS (R
PFAS ). This RPFAS analysis was conducted with utmost care and consideration amid the limited availability of valuable paired samples. The results indicated that low molecular weight PFAS, including short-chain and emerging PFAS, may have a greater potential for accumulation in brain tissue than long-chain PFAS. As an alternative to perfluorooctane sulfonic acid (PFOS), 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) exhibited brain accumulation potential similar to that of PFOS, suggesting it may not be a suitable substitute concerning health risk in brain. The BBB transmission efficiencies of perfluorooctanoic acid, PFOS, and 6:2 Cl-PFESA showed similar trends with age, which may be an important factor influencing the entry of exogenous compounds into the brain. A favorable link between perfluorooctane sulfonamide (FOSA) and the development and/or progression of glioma may be implicated by a strong positive correlation (r2 = 0.94; p < 0.01) between RFOSA and Ki-67 (a molecular marker of glioma). However, a causal relationship between RFOSA and glioma incidence were not established in the present study. The present pilot study conducted the first examination of BBB transmission efficiency of PFAS from plasma to brain tissue and highlighted the importance of reducing and/or controlling exposure to PFAS., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
30. Greenspace and human microbiota: A systematic review.
- Author
-
Zhang YD, Zhou GL, Wang L, Browning MHEM, Markevych I, Heinrich J, Knibbs LD, Zhao T, Ding Y, Chen S, Liu KK, Dadvand P, Dong GH, and Yang BY
- Subjects
- Humans, Environmental Exposure, Microbiota
- Abstract
Background: Potential effect of greenspace exposure on human microbiota have been explored by a number of observational and interventional studies, but the results remained mixed. We comprehensively synthesized these studies by performing a systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines., Methods: Comprehensive literature searches in three international databases (PubMed, Embase, and Web of Science) and three Chinese databases (China National Knowledge Infrastructure, Wanfang, and China Biology Medicine disc) were conducted from inception to November 1, 2023. Observational and interventional studies that evaluated associations between greenspace exposure and human microbiota at different anatomical sites were included. Studies were assessed using the National Toxicology Program's office of Health Assessment and Translation risk of bias tool and certainty of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluation framework. Two authors independently performed study selection, data extraction, and risk of bias assessment, and evidence grading. Study results were synthesized descriptively., Results: Twenty studies, including 11 observational studies and 9 interventional studies, were finally included into the systematic review. The microbiota of the included studies was from gut (n = 13), skin (n = 10), oral cavity (n = 5), nasal cavity (n = 5) and eyes (n = 1). The majority of studies reported the associations of greenspace exposure with increased diversity (e.g., richness and Shannon index) and/or altered overall composition of human gut (n = 12) and skin microbiota (n = 8), with increases in the relative abundance of probiotics (e.g., Ruminococcaceae) and decreases in the relative abundance of pathogens (e.g., Streptococcus and Escherichia/Shigella). Due to limited number of studies, evidence concerning greenspace and oral, nasal, and ocular microbiota were still inconclusive., Conclusion: The current evidence suggests that greenspace exposure may diversify gut and skin microbiota and alter their composition to healthier profiles. These findings would be helpful in uncovering the potential mechanisms underlying greenspace and human health and in promoting a healthier profile of human microbiota., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
31. Real-Time Detection of Yeast Growth on Solid Medium through Passive Microresonator Biosensor.
- Author
-
Shi BW, Zhao JM, Wang YK, Wang YX, Jiang YF, Yang GL, Wang J, and Qiang T
- Subjects
- Yeasts growth & development, Biosensing Techniques
- Abstract
This study presents a biosensor fabricated based on integrated passive device (IPD) technology to measure microbial growth on solid media in real-time. Yeast ( Pichia pastoris , strain GS115) is used as a model organism to demonstrate biosensor performance. The biosensor comprises an interdigital capacitor in the center with a helical inductive structure surrounding it. Additionally, 12 air bridges are added to the capacitor to increase the strength of the electric field radiated by the biosensor at the same height. Feasibility is verified by using a capacitive biosensor, and the change in capacitance values during the capacitance detection process with the growth of yeast indicates that the growth of yeast can induce changes in electrical parameters. The proposed IPD-based biosensor is used to measure yeast drop-added on a 3 mm medium for 100 h at an operating frequency of 1.84 GHz. The resonant amplitude of the biosensor varies continuously from 24 to 72 h due to the change in colony height during vertical growth of the yeast, with a maximum change of 0.21 dB. The overall measurement results also fit well with the Gompertz curve. The change in resonant amplitude between 24 and 72 h is then analyzed and reveals a linear relationship with time with a coefficient of determination of 0.9844, indicating that the biosensor is suitable for monitoring yeast growth. Thus, the proposed biosensor is proved to have potential in the field of microbial proliferation detection.
- Published
- 2024
- Full Text
- View/download PDF
32. Effects of film-forming components on the viability of probiotics and the application of synbiotic pectin film in preserving Da Xanh pomelo and Thai jackfruit fresh-cut.
- Author
-
Nguyen NHK, Bach GL, and Tran TT
- Abstract
Minimally processed products are highly convenient, and fresh-cut fruits coated with the synbiotic film have many advantages. This study investigated the film-forming components and preservation ability of Da Xanh pomelo and Thai jackfruit fresh-cut by synbiotic pectin film. The results showed that PA70 film combined with 1.5% FOS (fructooligosaccharides) had the highest number of viable cells of L. plantarum after 30 days of storage at 5 °C. The number of probiotic cells existing on fresh-cut products of Da Xanh pomelo and Thai jackfruit was always high (> 8 log CFU/g) and stable during 10 days of storage. In addition, jackfruit and pomelo fresh-cut preserved with probiotic film also showed probiotic activity in simulated stomach and small intestine medium with the number of probiotic cells (> 6 log CFU/g) and survival cell ratio after 4 h in small intestine medium reached 81.20 ± 0.92% (pomelo) and 82.16 ± 0.94% (Thai jackfruit)., Competing Interests: Conflict of interestThe authors declare that there are no conflicts of interest., (© The Korean Society of Food Science and Technology 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
- Published
- 2024
- Full Text
- View/download PDF
33. Highly Sensitive and Linear Resonator-Based Biosensor for White Blood Cell Counting: Feasible Measurement Method and Intrinsic Mechanism Exploration.
- Author
-
Wang YK, Shi BW, Zhao JM, Wang YX, Jiang YF, Yang GL, Gao XD, and Qiang T
- Subjects
- Humans, Leukocyte Count, Leukocytes cytology, Microwaves, Biosensing Techniques
- Abstract
Since different quantities of white blood cells (WBCs) in solution possess an adaptive osmotic pressure of cells, the WBCs themselves and in solution have similar concentrations, resulting in them having similar dielectric properties. Therefore, a microwave sensor could have difficulty in sensing the quantity variation when WBCs are in solution. This paper presents a highly sensitive, linear permittivity-inspired microwave biosensor for WBCs, counting through the evaporation method. Such a measurement method is proposed to record measurements after the cell solution is dripped onto the chip and is completely evaporated naturally. The proposed biosensor consists of an air-bridged asymmetric differential inductor and a centrally located circular fork-finger capacitor fabricated on a GaAs substrate using integrated passive fabrication technology. It is optimized to feature a larger sensitive area and improved Q-factor, which increases the effective area of interaction between cells and the electromagnetic field and facilitates the detection of their changes in number. The sensing relies on the dielectric properties of the cells and the change in the dielectric constant for different concentrations, and the change in resonance properties, which mainly represents the frequency shift, corresponds to the macroscopic change in the concentration of the cells. The microwave biosensors are used to measure biological samples with concentrations ranging from 0.25 × 10
6 to 8 × 106 cells per mL in a temperature (26.00 ± 0.40 °C) and humidity (54.40 ± 3.90 RH%) environment. The measurement results show a high sensitivity of 25.06 Hz/cells·mL-1 with a highly linear response of r2 = 0.99748. In addition, a mathematical modeling of individual cells in suspension is performed to estimate the dielectric constant of individual cells and further explain the working mechanism of the proposed microwave biosensor.- Published
- 2024
- Full Text
- View/download PDF
34. Unveiling the antioxidant superiority of α-tocopherol: Implications for vitamin E nomenclature and classification.
- Author
-
Tian H, Li YF, Jiao GL, Sun WY, and He RR
- Subjects
- Vitamin E, alpha-Tocopherol, Tocopherols, Antioxidants chemistry, Tocotrienols
- Abstract
Since the discovery of tocopherols a century ago, α-tocopherol has been distinguished for its unique biological functions. In this study, we aim to elucidate the unique characteristics of α-tocopherol from a chemical perspective. Utilizing density functional theory (DFT) calculations, we evaluated the thermodynamic and kinetic properties of tocopherols, tocotrienols and their oxidation products. Our findings highlight the superior thermodynamic and kinetic properties of α-tocopherol. Although tocopherol substrates generally exhibit similar reactivities, α-tocopherol is distinguished by a larger gap between the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) in intermediates, indicating a potential for greater energy release and favoring reaction progression. Moreover, α-tocopherol shows enhanced efficiency in quenching radical intermediates, especially when combined with vitamin C. All these dates provide valuable support for the naming of vitamin E., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
35. Recent Advances on NIR-II Light-Enhanced Chemodynamic Therapy.
- Author
-
Wu GL, Tan X, and Yang Q
- Subjects
- Humans, Hydrogen Peroxide, Phototherapy, Cell Line, Tumor, Tumor Microenvironment, Neoplasms drug therapy, Nanoparticles
- Abstract
Chemodynamic therapy (CDT) is a particular oncological therapeutic strategy by generates the highly toxic hydroxyl radical (•OH) from the dismutation of endogenous hydrogen peroxide (H
2 O2 ) via Fenton or Fenton-like reactions. However, single CDT therapies have been limited by unsatisfactory efficacy. Enhanced chemodynamic therapy (ECDT) triggered by near-infrared (NIR) is a novel therapeutic modality based on light energy to improve the efficiency of Fenton or Fenton-like reactions. However, the limited penetration and imaging capability of the visible (400-650 nm) and traditional NIR-I region (650-900 nm) light-amplified CDT restrict the prospects for its clinical application. Combined with the high penetration/high precision imaging characteristics of the second near-infrared (NIR-II,) nanoplatform, it is expected to kill deep tumors efficiently while imaging the treatment process in real-time, and more notably, the NIR-II region radiation with wavelengths above 1000 nm can minimize the irradiation damage to normal tissues. Such NIR-II ECDT nanoplatforms have greatly improved the effectiveness of CDT therapy and demonstrated extraordinary potential for clinical applications. Accordingly, various strategies have been explored in the past years to improve the efficiency of NIR-II Enhanced CDT. In this review, the mechanisms and strategies used to improve the performance of NIR-II-enhanced CDT are outlined., (© 2023 Wiley‐VCH GmbH.)- Published
- 2024
- Full Text
- View/download PDF
36. A commentary of "Prolonging the lifetime of logic qubits by Bosonic error-correcting code -realizing the break-even point of quantum error correction": Top 10 Scientific Advances of 2023, China.
- Author
-
Long GL
- Abstract
Competing Interests: The author declares that he has no conflicts of interest in this work.
- Published
- 2024
- Full Text
- View/download PDF
37. Interferon-γ in the tumor microenvironment promotes the expression of B7H4 in colorectal cancer cells, thereby inhibiting cytotoxic T cells.
- Author
-
Jing ZL, Liu GL, Zhou N, Xu DY, Feng N, Lei Y, Ma LL, Tang MS, Tong GH, Tang N, and Deng YJ
- Subjects
- Humans, Animals, Mice, Interferon-gamma pharmacology, CD8-Positive T-Lymphocytes, Tumor Microenvironment, T-Lymphocytes, Cytotoxic, Colorectal Neoplasms genetics, Colorectal Neoplasms pathology
- Abstract
The bioactivity of interferon-γ (IFN-γ) in cancer cells in the tumor microenvironment (TME) is not well understood in the current immunotherapy era. We found that IFN-γ has an immunosuppressive effect on colorectal cancer (CRC) cells. The tumor volume in immunocompetent mice was significantly increased after subcutaneous implantation of murine CRC cells followed by IFN-γ stimulation, and RNA sequencing showed high expression of B7 homologous protein 4 (B7H4) in these tumors. B7H4 promotes CRC cell growth by inhibiting the release of granzyme B (GzmB) from CD8
+ T cells and accelerating apoptosis in CD8+ T cells. Furthermore, interferon regulatory factor 1 (IRF1), which binds to the B7H4 promoter, is positively associated with IFN-γ stimulation-induced expression of B7H4. The clinical outcome of patients with CRC was negatively related to the high expression of B7H4 in cancer cells or low expression of CD8 in the microenvironment. Therefore, B7H4 is a biomarker of poor prognosis in CRC patients, and interference with the IFN-γ/IRF1/B7H4 axis might be a novel immunotherapeutic method to restore the cytotoxic killing of CRC cells., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
38. Discovery of tryptanthrin analogues bearing F and piperazine moieties as novel phytopathogenic antibacterial and antiviral agents.
- Author
-
Zhang GL, Wang ZC, Li CP, Chen DP, Li ZR, Li Y, and Ouyang GP
- Subjects
- Ribavirin metabolism, Ribavirin pharmacology, Molecular Docking Simulation, Piperazine metabolism, Piperazine pharmacology, Proteomics, Microbial Sensitivity Tests, Anti-Bacterial Agents pharmacology, Antiviral Agents pharmacology, Plant Diseases, Structure-Activity Relationship, Xanthomonas, Tobacco Mosaic Virus, Oryza, Quinazolines
- Abstract
Background: Plant bacterial infections and plant viruses seriously affect the yield and quality of crops. Based on the various activities of tryptanthrin, a series of tryptanthrin analogues bearing F and piperazine moieties were designed, synthesized, and evaluated for their biological activities against three plant bacteria and tobacco mosaic virus (TMV)., Results: Bioassay results indicated that compounds 6a-6l displayed excellent antibacterial activities in vitro and 6a-6c and 6g exhibited better antiviral activities against TMV than commercial ribavirin. In particular, 6b showed the most effect on Xanthomonas oryzae pv. oryzae (Xoo) with a half-maximal effective concentration (EC
50 ) of 1.26 μg mL-1 , compared with the commercial pesticide bismerthiazol (BT; EC50 = 34.3 μg mL-1 ) and thiodiazole copper (TC; EC50 = 73.3 μg mL-1 ). Meanwhile, 6a also had the best antiviral activity at 500 μg mL-1 for curative, protection, and inactivation purposes, compared with ribavirin in vivo., Conclusion: Compound 6b could cause changes in bacterial morphology, induce the accumulation of reactive oxygen species, promote apoptosis of bacterial cells, inhibit the formation of biofilm, and block the growth of Xoo cells. Proteomic analysis revealed major differences in the bacterial secretory system pathways T2SS and T6SS, which inhibited membrane transport. Molecular docking revealed that 6a and 6g could interact with TMV coat protein preventing virus assembly. These results suggest that tryptanthrin analogues bearing F and piperazine moieties could be promising candidate agents for antibacterial and antiviral use in agricultural production. © 2023 Society of Chemical Industry., (© 2023 Society of Chemical Industry.)- Published
- 2024
- Full Text
- View/download PDF
39. Pathological Characteristics and Classification of Unstable Coronary Atherosclerotic Plaques.
- Author
-
Xing YH, Li Y, Wang WZ, Wang LL, Sun LL, DU QX, Cao J, He GL, and Sun JH
- Subjects
- Humans, Risk Factors, Death, Sudden, Cardiac etiology, Death, Sudden, Cardiac pathology, Coronary Vessels diagnostic imaging, Coronary Vessels pathology, Plaque, Atherosclerotic complications, Plaque, Atherosclerotic pathology, Coronary Thrombosis complications, Coronary Thrombosis pathology, Coronary Artery Disease complications
- Abstract
Important forensic diagnostic indicators of sudden death in coronary atherosclerotic heart disease, such as acute or chronic myocardial ischemic changes, sometimes make it difficult to locate the ischemic site due to the short death process, the lack of tissue reaction time. In some cases, the deceased died of sudden death on the first-episode, resulting in difficulty for medical examiners to make an accurate diagnosis. However, clinical studies on coronary instability plaque revealed the key role of coronary spasm and thrombosis caused by their lesions in sudden coronary death process. This paper mainly summarizes the pathological characteristics of unstable coronary plaque based on clinical medical research, including plaque rupture, plaque erosion and calcified nodules, as well as the influencing factors leading to plaque instability, and briefly describes the research progress and technique of the atherosclerotic plaques, in order to improve the study on the mechanism of sudden coronary death and improve the accuracy of the forensic diagnosis of sudden coronary death by diagnosing different pathologic states of coronary atherosclerotic plaques.
- Published
- 2024
- Full Text
- View/download PDF
40. Recent Progress on Tumor Microenvironment-Activated NIR-II Phototheranostic Agents with Simultaneous Activation for Diagnosis and Treatment.
- Author
-
Xiao H, Wu GL, Tan S, Tan X, and Yang Q
- Subjects
- Humans, Phototherapy methods, Theranostic Nanomedicine methods, Tumor Microenvironment, Hydrogen Peroxide, Glutathione, Cell Line, Tumor, Neoplasms diagnostic imaging, Neoplasms drug therapy, Nanoparticles therapeutic use
- Abstract
Malignant tumors seriously threaten human life and well-being. Emerging Near-infrared II (NIR-II, 1000-1700 nm) phototheranostic nanotechnology integrates diagnostic and treatment modalities, offering merits including improved tissue penetration and enhanced spatiotemporal resolution. This remarkable progress has opened promising avenues for advancing tumor theranostic research. The tumor microenvironment (TME) differs from normal tissues, exhibiting distinct attributes such as hypoxia, acidosis, overexpressed hydrogen peroxide, excess glutathione, and other factors. Capitalizing on these attributes, researchers have developed TME-activatable NIR-II phototheranostic agents with diagnostic and therapeutic attributes concurrently. Therefore, developing TME-activatable NIR-II phototheranostic agents with diagnostic and therapeutic activation holds significant research importance. Currently, research on TME-activatable NIR-II phototheranostic agents is still in its preliminary stages. This review examines the recent advances in developing dual-functional NIR-II activatable phototheranostic agents over the past years. It systematically presents NIR-II phototheranostic agents activated by various TME factors such as acidity (pH), hydrogen peroxide (H
2 O2 ), glutathione (GSH), hydrogen sulfide (H2 S), enzymes, and their hybrid. This encompasses NIR-II fluorescence and photoacoustic imaging diagnostics, along with therapeutic modalities, including photothermal, photodynamic, chemodynamic, and gas therapies triggered by these TME factors. Lastly, the difficulties and opportunities confronting NIR-II activatable phototheranostic agents in the simultaneous diagnosis and treatment field are highlighted., (© 2024 Wiley-VCH GmbH.)- Published
- 2024
- Full Text
- View/download PDF
41. [A multi-center epidemiological study on pneumococcal meningitis in children from 2019 to 2020].
- Author
-
Wang CY, Xu HM, Liu G, Liu J, Yu H, Chen BQ, Zheng G, Shu M, DU LJ, Xu ZW, Huang LS, Li HB, Wang D, Bai ST, Shan QW, Zhu CH, Tian JM, Hao JH, Lin AW, Lin DJ, Wu JZ, Zhang XH, Cao Q, Tao ZB, Chen Y, Zhu GL, Xue P, Tang ZZ, Su XW, Qu ZH, Zhao SY, Pang L, Deng HL, Shu SN, and Chen YH
- Subjects
- Infant, Female, Male, Humans, Child, Infant, Newborn, Adolescent, Meropenem, Vancomycin, Levofloxacin, Linezolid, Moxifloxacin, Retrospective Studies, Rifampin, Streptococcus pneumoniae, Chloramphenicol, Meningitis, Pneumococcal drug therapy, Meningitis, Pneumococcal epidemiology, Subdural Effusion, Empyema, Hydrocephalus
- Abstract
Objectives: To investigate the clinical characteristics and prognosis of pneumococcal meningitis (PM), and drug sensitivity of Streptococcus pneumoniae (SP) isolates in Chinese children., Methods: A retrospective analysis was conducted on clinical information, laboratory data, and microbiological data of 160 hospitalized children under 15 years old with PM from January 2019 to December 2020 in 33 tertiary hospitals across the country., Results: Among the 160 children with PM, there were 103 males and 57 females. The age ranged from 15 days to 15 years, with 109 cases (68.1%) aged 3 months to under 3 years. SP strains were isolated from 95 cases (59.4%) in cerebrospinal fluid cultures and from 57 cases (35.6%) in blood cultures. The positive rates of SP detection by cerebrospinal fluid metagenomic next-generation sequencing and cerebrospinal fluid SP antigen testing were 40% (35/87) and 27% (21/78), respectively. Fifty-five cases (34.4%) had one or more risk factors for purulent meningitis, 113 cases (70.6%) had one or more extra-cranial infectious foci, and 18 cases (11.3%) had underlying diseases. The most common clinical symptoms were fever (147 cases, 91.9%), followed by lethargy (98 cases, 61.3%) and vomiting (61 cases, 38.1%). Sixty-nine cases (43.1%) experienced intracranial complications during hospitalization, with subdural effusion and/or empyema being the most common complication [43 cases (26.9%)], followed by hydrocephalus in 24 cases (15.0%), brain abscess in 23 cases (14.4%), and cerebral hemorrhage in 8 cases (5.0%). Subdural effusion and/or empyema and hydrocephalus mainly occurred in children under 1 year old, with rates of 91% (39/43) and 83% (20/24), respectively. SP strains exhibited complete sensitivity to vancomycin (100%, 75/75), linezolid (100%, 56/56), and meropenem (100%, 6/6). High sensitivity rates were also observed for levofloxacin (81%, 22/27), moxifloxacin (82%, 14/17), rifampicin (96%, 25/26), and chloramphenicol (91%, 21/23). However, low sensitivity rates were found for penicillin (16%, 11/68) and clindamycin (6%, 1/17), and SP strains were completely resistant to erythromycin (100%, 31/31). The rates of discharge with cure and improvement were 22.5% (36/160) and 66.2% (106/160), respectively, while 18 cases (11.3%) had adverse outcomes., Conclusions: Pediatric PM is more common in children aged 3 months to under 3 years. Intracranial complications are more frequently observed in children under 1 year old. Fever is the most common clinical manifestation of PM, and subdural effusion/emphysema and hydrocephalus are the most frequent complications. Non-culture detection methods for cerebrospinal fluid can improve pathogen detection rates. Adverse outcomes can be noted in more than 10% of PM cases. SP strains are high sensitivity to vancomycin, linezolid, meropenem, levofloxacin, moxifloxacin, rifampicin, and chloramphenicol.
- Published
- 2024
- Full Text
- View/download PDF
42. An aerotaxis receptor influences invasion of Agrobacterium tumefaciens into its host.
- Author
-
Huang Z, Zou J, Guo M, Zhang G, Gao J, Zhao H, Yan F, Niu Y, and Wang GL
- Subjects
- Plant Tumors microbiology, Plants, Globins, Agrobacterium tumefaciens genetics, Chemotaxis genetics
- Abstract
Agrobacterium tumefaciens is a soil-borne pathogenic bacterium that causes crown gall disease in many plants. Chemotaxis offers A. tumefaciens the ability to find its host and establish infection. Being an aerobic bacterium, A. tumefaciens possesses one chemotaxis system with multiple potential chemoreceptors. Chemoreceptors play an important role in perceiving and responding to environmental signals. However, the studies of chemoreceptors in A. tumefaciens remain relatively restricted. Here, we characterized a cytoplasmic chemoreceptor of A. tumefaciens C58 that contains an N-terminal globin domain. The chemoreceptor was designated as Atu1027. The deletion of Atu1027 not only eliminated the aerotactic response of A. tumefaciens to atmospheric air but also resulted in a weakened chemotactic response to multiple carbon sources. Subsequent site-directed mutagenesis and phenotypic analysis showed that the conserved residue His100 in Atu1027 is essential for the globin domain's function in both chemotaxis and aerotaxis. Furthermore, deleting Atu1027 impaired the biofilm formation and pathogenicity of A. tumefaciens . Collectively, our findings demonstrated that Atu1027 functions as an aerotaxis receptor that affects agrobacterial chemotaxis and the invasion of A. tumefaciens into its host., Competing Interests: The authors declare there are no competing interests., (©2024 Huang et al.)
- Published
- 2024
- Full Text
- View/download PDF
43. Strengthened Interficial Adhesive Fracture Energy by Young's Modulus Matching Degree Strategy in Carbon-Based HTM Free MAPbI 3 Perovskite Solar Cell with Enhanced Mechanical Compatibility.
- Author
-
Liu WW, Li CX, Cui CY, Liu GL, Lei YX, Zheng YW, Da SJ, Xu ZQ, Zou R, Kong LB, and Ran F
- Abstract
Carbon-based hole transport layer-free perovskite solar cells (PSCs) based on methylammonium lead triiodide (MAPbI
3 ) have become one of the research focus due to low cost, easy preparation, and good optoelectronic properties. However, instability of perovskite under vacancy defects and stress-strain makes it difficult to achieve high-efficiency and stable power output. Here, a soft-structured long-chain 2D pentanamine iodide (abbreviated as "PI") is used to improve perovskite quality and interfacial mechanical compatibility. PI containing CH3 (CH2 )4 NH3 + and I- ions not only passivate defects at grain boundaries, but also effectively alleviate residual stress during high temperature annealing via decreasing Young's modulus of perovskite film. Most importantly, PI effectively increases matching degree of Young's modulus between MAPbI3 (47.1 GPa) and carbon (6.7 GPa), and strengthens adhesive fracture energy (Gc ) between perovskite and carbon, which is helpful for outward release of nascent interfacial stress generated under service conditions. Consequently, photoelectric conversion efficiency (PCE) of optimal device is enhanced from 10.85% to 13.76% and operational stability is also significantly improved. 83.1% output is maintained after aging for 720 h at room temperature and 25-60% relative humidity (RH). This strategy of regulation from chemistry and physics provides a strategy for efficient and stable carbon-based PSCs., (© 2023 Wiley-VCH GmbH.)- Published
- 2024
- Full Text
- View/download PDF
44. High-directivity far-field radiation of quantum dot-based single-photon emitter coupled to polymeric circular waveguide resonant grating.
- Author
-
Ngo GL, Le XP, Pham QT, Hermier JP, and Lai ND
- Abstract
Solid-state single-photon emitters (SPEs) commonly encounter the limitation of quasi-omnidirectional radiation patterns, which poses challenges in utilizing their emission with conventional optical instruments. In this study, we demonstrate the tailoring of the far-field radiation patterns of SPEs based on colloidal quantum dots (QDs), both theoretically and experimentally, by employing a polymer-based dielectric antenna. We introduce a simple and cost-effective technique, namely low one-photon absorption direct laser writing, to achieve precise coupling of a QD into an all-polymer circular waveguide resonance grating. By optimizing the geometry parameters of the structure using 3D finite-difference time-domain simulations, resonance at the emission wavelength of QDs is achieved in the direction perpendicular to the substrate, resulting in photon streams with remarkably high directivity on both sides of the grating. Theoretical calculations predict beam divergence values below 2°, while experimental measurements using back focal plane imaging yield divergence angles of approximately 8°. Our study contributes to the evaluation of concentric circular grating structures employing low refractive index polymer materials, thereby expanding the possibilities for their application., (© 2024 IOP Publishing Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
45. Rapamycin protects mouse skin from ultraviolet B-induced photodamage by modulating Hspb2-mediated autophagy and apoptosis.
- Author
-
Li A, Chen AJ, Xu J, Wen ZY, Bai GL, Wang ZY, Jiang YX, and Wang P
- Subjects
- Animals, Mice, Autophagy, Mechanistic Target of Rapamycin Complex 1, Collagen, Transforming Growth Factor beta, HSP27 Heat-Shock Proteins genetics, Epidermis, Apoptosis
- Abstract
Background: Continuous exposure to UVB is the main extrinsic cause of skin photodamage, which is associated with oxidative stress, DNA damage, apoptosis and degradation of collagen. Rapamycin, a mechanistic target inhibitor of rapamycin complex 1 (mTORC1), has been shown to play a crucial role anti-tumor and aging retardation, but its mechanism of action in UVB-induced photodamage still remains unknown. In this study, we investigated the role of rapamycin and Hspb2 (also known as Hsp27) in UVB-induced photodamage in mice., Methods and Results: We constructed skin acute photodamage models on the ears of WT and Hspb2 KO mice, respectively, and administered rapamycin treatment. Histological results showed that knockout of the hspb2 exacerbated the skin damage, as evidenced by thickening of the epidermis, breakage and disruption of collagen fibers and reduction in their number, which is reversed by rapamycin treatment. In addition, hspb2 knockout promoted UVB-induced apoptosis and reduced autophagy levels, with a significant increase in p53 levels and Bax/Bcl-2 ratio, a reduction in LC3II/I ratio and an increase in p62 levels in the KO mice compared to those in WT mice after the same dose of UVB irradiation. Rapamycin was also found to inhibit collagen degradation induced by hspb2 knockdown through activation of the TGF-β/Smad signaling pathway., Conclusions: Rapamycin can alleviate skin photodamage from Hspb2 knockout to some extent. It may be a potential therapeutic drug for skin photodamage. In this study, we investigated the role of rapamycin and Hspb2 in UVB-induced photodamage in mice. Histological results showed that knockout of the hspb2 exacerbated the skin damage, as evidenced by thickening of the epidermis, breakage and disruption of collagen fibers and reduction in their number, which is reversed by rapamycin treatment. In addition, hspb2 knockout promoted UVB-induced apoptosis and reduced autophagy levels. Rapamycin was also found to inhibit collagen degradation induced by hspb2 knockdown through activation of the TGF-β/Smad signaling pathway. We conclude that rapamycin and Hspb2 exert a synergistic protective effect in skin photodamage., (© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
- Published
- 2024
- Full Text
- View/download PDF
46. [Male reproductive damage caused by phthalate esters: Progress in research].
- Author
-
Xu GL and Zhou LQ
- Subjects
- Humans, Male, Esters, Infertility, Male chemically induced, Infertility, Male etiology, Genitalia, Male drug effects, Phthalic Acids toxicity, Phthalic Acids adverse effects
- Abstract
Phthalate esters are plasticizers that people are often exposed to in daily life. They are closely related to our lives and generally exist in the air, soil and water. Studies show that the exposure to phthalates is associated with male reproductive damage. When the concentration of phthalates reaches a certain level in the body, it can reduce the count and motility of sperm, induce abnormalities in the reproductive system and organs, and affect male fertility. This review summarizes the advances in the studies of the metabolic pathway of phthalate esters in the human body, the mechanism underlying their damage to the male reproductive system and their antagonistic effect.
- Published
- 2024
47. Multiple sparganosis spinal infections mainly in the thoracic region: A case report.
- Author
-
Wen GJ, Chen J, Zhang SF, Zhou ZS, and Jiao GL
- Abstract
Background: Spinal infection with sparganosis is rarely seen, and multiple spinal infections with sparganosis in the thoracic spine have not been reported., Case Summary: In this case report, a 56-year old male patient suffered from back pain for 3 mo. Computed tomography examination of the thoracic spine showed bone destruction of the T4-5 vertebral body, as well as the right pedicle and lamina of T5. Magnetic resonance imaging showed high signals on T2W1 images and fat-suppressed images in the right vertebral body of T4-5 and the right pedicle and lamina of T5, a high signal in the vertebral canal, and similar high signals in the paravertebral and subcutaneous regions of the whole spine. Puncture biopsy showed sparganosis. Following definite diagnosis, the patient was treated with debridement of T4-5 infected lesions under a microscope, bone grafting and internal fixation. Postoperatively, the patient's back pain symptoms were significantly relieved; the incision healed after one-stage treatment, and albendazole antiparasitic treatment was administered., Conclusion: Puncture biopsy is the most reliable method to diagnose infection by sparganum. Removal of infected lesions under the microscope and albendazole for antiparasitic treatment are safe and effective., Competing Interests: Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article., (©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
48. Design and Synthesis of D 3 R Bitopic Ligands with Flexible Secondary Binding Fragments: Radioligand Binding and Computational Chemistry Studies.
- Author
-
Tian GL, Hsieh CJ, Taylor M, Lee JY, Luedtke RR, and Mach RH
- Subjects
- Ligands, Research Design, Computational Chemistry, Nitrogen
- Abstract
A series of bitopic ligands based on Fallypride with a flexible secondary binding fragment (SBF) were prepared with the goal of preparing a D
3 R-selective compound. The effect of the flexible linker ( ( R , S ) -trans -2a - d ), SBFs ( ( R , S ) -trans -2h - j ), and the chirality of orthosteric binding fragments (OBFs) ( ( S , R ) -trans -d , ( S , R ) -trans -i , ( S , S ) -trans -d , ( S , S ) -trans -i, ( R , R ) -trans -d, and ( R , R ) -trans -i ) were evaluated in in vitro binding assays. Computational chemistry studies revealed that the interaction of the fragment binding to the SBF increased the distance between the pyrrolidine nitrogen and ASP1103.32 of the D3 R, thereby reducing the D3 R affinity to a suboptimal level.- Published
- 2023
- Full Text
- View/download PDF
49. [Preparation of Bamboo-based N, P Co-doped Activated Carbon and Its Lanthanum Ion Adsorption Performance].
- Author
-
Wang GL, Liu YY, Jiang RY, Li SM, Lin GF, Lu BL, Huang B, and Chen YD
- Abstract
Using diammonium hydrogen phosphate as an activator and N and P source and and bamboo chips as the carbon source, N, P co-doped activated carbon was prepared by one-step pyrolysis and used to efficiently remove La
3+ in aqueous solutions. The effects of activation temperature and pH value on the adsorption performance of La3+ were analyzed, and the activation and adsorption mechanisms were explored using TG-IR, SEM-EDX, pore structure, XPS, and hydrophilicity. The results showed that diammonium hydrogen phosphate easily decomposed at a high temperature to produce ammonia and phosphoric acid, which activated the material and promoted the increase in the specific surface area and pore volume of the activated carbon. As an N and P source, the addition of diammonium hydrogen phosphate successfully achieved the N, P co-doping of activated carbon, and the introduction of N- and P-containing functional groups was the key to enhance the adsorption of La3+ . Among them, graphitic nitrogen could provide interactions between La3+ -π bonds, and C-P=O and C/P-O-P could provide active sites for the adsorption of La3+ through complexation and electrostatic interaction. The adsorption of La3+ on N, P co-doped activated carbons was endothermic and spontaneous, and the adsorption process conformed to the Langmuir isotherm and secondary kinetic model. Under the process conditions of an activation temperature of 900℃ and pH=6, the adsorption capacity of the N, P co-doped activated carbon was as high as 55.18 mg·g-1 , which was 2.53 times higher than that of the undoped sample, and its adsorption selectivity for La3+ in the La3+ /Na+ and La3+ /Ca2+ coexistence systems reached 93.49% and 82.49%, respectively. Additionally, the removal efficiency remained above 54% after five successive adsorption-desorption cycle experiments.- Published
- 2023
- Full Text
- View/download PDF
50. Synthesis of bitopic ligands based on fallypride and evaluation of their affinity and selectivity towards dopamine D 2 and D 3 receptors.
- Author
-
Tian GL, Hsieh CJ, Taylor M, Lee JY, Riad AA, Luedtke RR, and Mach RH
- Subjects
- Benzamides pharmacology, Ligands, Dopamine, Receptors, Dopamine D3 chemistry
- Abstract
The difference in the secondary binding site (SBS) between the dopamine 2 receptor (D
2 R) and dopamine 3 receptor (D3 R) has been used in the design of compounds displaying selectivity for the D3 R versus D2 R. In the current study, a series of bitopic ligands based on Fallypride were prepared with various secondary binding fragments (SBFs) as a means of improving the selectivity of this benzamide analog for D3 R versus D2 R. We observed that compounds having a small alkyl group with a heteroatom led to an improvement in D3 R versus D2 R selectivity. Increasing the steric bulk in the SBF increase the distance between the pyrrolidine N and Asp110, thereby reducing D3 R affinity. The best-in-series compound was (2S,4R)-trans-27 which had a modest selectivity for D3 R versus D2 R and a high potency in the β-arrestin competition assay which provides a measure of the ability of the compound to compete with endogenous dopamine for binding to the D3 R. The results of this study identified factors one should consider when designing bitopic ligands based on Fallypride displaying an improved affinity for D3 R versus D2 R., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Masson SAS. All rights reserved.)- Published
- 2023
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.