256 results on '"Qu, Wen"'
Search Results
2. Characteristics and Functions of Non-Suicidal Self-Injury That Inform Suicide Risk.
- Author
-
Park Y, Qu W, and Ammerman BA
- Subjects
- Humans, Female, Male, Risk Factors, Young Adult, Suicidal Ideation, Students psychology, Adolescent, Adult, Self Report, Interpersonal Relations, Risk Assessment methods, Self-Injurious Behavior psychology, Suicide psychology
- Abstract
Objective: Although non-suicidal self-injury (i.e., NSSI) has been suggested as a robust risk factor of suicide, NSSI related information that is most related to suicide risk remains unclear. Commonly studied NSSI characteristics are its frequency and the number of methods endorsed. However, it may not be merely how frequent or how many different methods that matters, but "why," which alludes to the importance of NSSI functions (or why individuals engage in NSSI). Thus, this study examined how the interactions between NSSI characteristics and functions are associated with suicide risk., Methods: Undergraduate students ( n = 820) with a lifetime history of NSSI, filled out self-report measures on NSSI and suicide risk. A hierarchical regression analysis was conducted to examine the moderation effects between four 2-way interactions (i.e., method X intrapersonal; method X interpersonal; frequency X intrapersonal; frequency X interpersonal) on suicide risk., Results: Main effects of all four independent variables were statistically significant. In terms of interactions, the intrapersonal function moderated both the effects of NSSI frequency and methods on suicide risk, whereas the interpersonal function moderated the effects of NSSI frequency on suicide risk., Conclusion: Our results highlight that some NSSI related information than others are more indicative of suicide risk. In particular, the combination of NSSI functions, along with its frequency and number of methods, holds promise when assessing for current and lifetime suicidal thoughts and behaviors.
- Published
- 2024
- Full Text
- View/download PDF
3. Biologically active franchetine-type diterpenoid alkaloids: Isolation, synthesis, anti-inflammatory, agalgesic activities, and molecular docking.
- Author
-
Xiao Y, Chang Y, Liu YY, Li TT, Qu WR, Yuan C, Chen L, Huang S, and Zhou XL
- Abstract
In this study, four franchetine-type diterpenoid alkaloids (1-4) were isolated from Aconitum sinoaxillare, and fourteen diverse franchetine analogs (5-18) were synthesized. Compounds 1, 2, 7 and 16 exhibited stronger inhibitory effects on NO production when compared to celecoxib. Among them, compound 1 had the best inhibitory effect on iNOS and COX-2 inflammatory proteins. The in vitro studies displayed that the anti-inflammatory effect of the most active compound 1 was ascribed to the inhibition of the TLR4-MyD88/NF-κB/MAPKs signalling pathway. Consequently, this led to a inhibition in the expression of inflammatory factors or mediators including NO, ROS, TNF-α, IL-6, IL-1β, iNOS, and COX-2. Additionally, compound 1 had low toxicity (LD
50 > 20 mg/kg) in mice, and it had notable analgesic effects on acetic acid-induced visceral pain (ED50 = 2.15 ± 0.07 mg/kg). Moreover, compound 1 exhibited a distinct reduction in the NaV 1.7 and NaV 1.8 channel currents during both resting and half-inactivated states at 50 μM. The present study enriches the pharmacological activities of franchetine derivatives and provides valuable insights for the development of novel anti-inflammatory and analgesic agents., 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 Inc.)- Published
- 2024
- Full Text
- View/download PDF
4. Statistical power analysis and sample size planning for moderated mediation models.
- Author
-
Xu Z, Gao F, Fa A, Qu W, and Zhang Z
- Subjects
- Sample Size, Humans, Computer Simulation, Software, Data Interpretation, Statistical, Mediation Analysis, Behavioral Research methods, Models, Statistical
- Abstract
Conditional process models, including moderated mediation models and mediated moderation models, are widely used in behavioral science research. However, few studies have examined approaches to conduct statistical power analysis for such models and there is also a lack of software packages that provide such power analysis functionalities. In this paper, we introduce new simulation-based methods for power analysis of conditional process models with a focus on moderated mediation models. These simulation-based methods provide intuitive ways for sample-size planning based on regression coefficients in a moderated mediation model as well as selected variance and covariance components. We demonstrate how the methods can be applied to five commonly used moderated mediation models using a simulation study, and we also assess the performance of the methods through the five models. We implement our approaches in the WebPower R package and also in Web apps to ease their application., (© 2024. The Psychonomic Society, Inc.)
- Published
- 2024
- Full Text
- View/download PDF
5. Knowledge enhanced bottom-up affordance grounding for robotic interaction.
- Author
-
Qu W, Li X, and Jin X
- Abstract
With the rapid advancement of robotics technology, an increasing number of researchers are exploring the use of natural language as a communication channel between humans and robots. In scenarios where language conditioned manipulation grounding, prevailing methods rely heavily on supervised multimodal deep learning. In this paradigm, robots assimilate knowledge from both language instructions and visual input. However, these approaches lack external knowledge for comprehending natural language instructions and are hindered by the substantial demand for a large amount of paired data, where vision and language are usually linked through manual annotation for the creation of realistic datasets. To address the above problems, we propose the knowledge enhanced bottom-up affordance grounding network (KBAG-Net), which enhances natural language understanding through external knowledge, improving accuracy in object grasping affordance segmentation. In addition, we introduce a semi-automatic data generation method aimed at facilitating the quick establishment of the language following manipulation grounding dataset. The experimental results on two standard dataset demonstrate that our method outperforms existing methods with the external knowledge. Specifically, our method outperforms the two-stage method by 12.98% and 1.22% of mIoU on the two dataset, respectively. For broader community engagement, we will make the semi-automatic data construction method publicly available at https://github.com/wmqu/Automated-Dataset-Construction4LGM., Competing Interests: The authors declare there are no competing interests., (©2024 Qu et al.)
- Published
- 2024
- Full Text
- View/download PDF
6. Semi-automatic proximal humeral trabecular bone density assessment tool: technique application and clinical validation.
- Author
-
Guo DM, Weng YZ, Yu ZH, Li SH, Qu WR, Liu XN, Qi H, Ma C, Tang XF, Li RY, Han Q, Xu H, Lu WW, and Qin YG
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Reproducibility of Results, Algorithms, Phantoms, Imaging, Adult, Osteoporosis physiopathology, Osteoporosis diagnostic imaging, Aged, 80 and over, Bone Density physiology, Tomography, X-Ray Computed methods, Humerus diagnostic imaging, Humerus physiology, Cancellous Bone diagnostic imaging, Cancellous Bone physiopathology, Cancellous Bone physiology
- Abstract
Purpose: This study aimed to apply a newly developed semi-automatic phantom-less QCT (PL-QCT) to measure proximal humerus trabecular bone density based on chest CT and verify its accuracy and precision., Methods: Subcutaneous fat of the shoulder joint and trapezius muscle were used as calibration references for PL-QCT BMD measurement. A self-developed algorithm based on a convolution map was utilized in PL-QCT for semi-automatic BMD measurements. CT values of ROIs used in PL-QCT measurements were directly used for phantom-based quantitative computed tomography (PB-QCT) BMD assessment. The study included 376 proximal humerus for comparison between PB-QCT and PL-QCT. Two sports medicine doctors measured the proximal humerus with PB-QCT and PL-QCT without knowing each other's results. Among them, 100 proximal humerus were included in the inter-operative and intra-operative BMD measurements for evaluating the repeatability and reproducibility of PL-QCT and PB-QCT., Results: A total of 188 patients with 376 shoulders were involved in this study. The consistency analysis indicated that the average bias between proximal humerus BMDs measured by PB-QCT and PL-QCT was 1.0 mg/cc (agreement range - 9.4 to 11.4; P > 0.05, no significant difference). Regression analysis between PB-QCT and PL-QCT indicated a good correlation (R-square is 0.9723). Short-term repeatability and reproducibility of proximal humerus BMDs measured by PB-QCT (CV: 5.10% and 3.41%) were slightly better than those of PL-QCT (CV: 6.17% and 5.64%)., Conclusions: We evaluated the bone quality of the proximal humeral using chest CT through the semi-automatic PL-QCT system for the first time. Comparison between it and PB-QCT indicated that it could be a reliable shoulder BMD assessment tool with acceptable accuracy and precision. This study developed and verify a semi-automatic PL-QCT for assessment of proximal humeral bone density based on CT to assist in the assessment of proximal humeral osteoporosis and development of individualized treatment plans for shoulders., (© 2024. International Osteoporosis Foundation and Bone Health and Osteoporosis Foundation.)
- Published
- 2024
- Full Text
- View/download PDF
7. Correction to: Semi-automatic proximal humeral trabecular bone density assessment tool: technique application and clinical validation.
- Author
-
Guo DM, Weng YZ, Yu ZH, Li SH, Qu WR, Liu XN, Qi H, Ma C, Tang XF, Li RY, Han Q, Xu H, Lu WW, and Qin YG
- Published
- 2024
- Full Text
- View/download PDF
8. Developing a High-Umami, Low-Salt Soy Sauce through Accelerated Moromi Fermentation with Corynebacterium and Lactiplantibacillus Strains.
- Author
-
Wang LH, Qu WH, Xu YN, Xia SG, Xue QQ, Jiang XM, Liu HY, Xue CH, and Wen YQ
- Abstract
The traditional fermentation process of soy sauce employs a hyperhaline model and has a long fermentation period. A hyperhaline model can improve fermentation speed, but easily leads to the contamination of miscellaneous bacteria and fermentation failure. In this study, after the conventional koji and moromi fermentation, the fermentation broth was pasteurized and diluted, and then inoculated with three selected microorganisms including Corynebacterium glutamicum , Corynebacterium ammoniagenes , and Lactiplantibacillus plantarum for secondary fermentation. During this ten-day fermentation, the pH, free amino acids, organic acids, nucleotide acids, fatty acids, and volatile compounds were analyzed. The fermentation group inoculated with C. glutamicum accumulated the high content of amino acid nitrogen of 0.92 g/100 mL and glutamic acid of 509.4 mg/100 mL. The C. ammoniagenes group and L. plantarum group were rich in nucleotide and organic acid, respectively. The fermentation group inoculated with three microorganisms exhibited the best sensory attributes, showing the potential to develop a suitable fermentation method. The brewing speed of the proposed process in this study was faster than that of the traditional method, and the umami substances could be significantly accumulated in this low-salt fermented model (7% w / v NaCl). This study provides a reference for the low-salt and rapid fermentation of seasoning.
- Published
- 2024
- Full Text
- View/download PDF
9. Biosafety Risk Control Strategies in Laboratory Animal Research.
- Author
-
Weng ST, Li QW, Gao YD, and Qiu YF
- Abstract
To understand biosafety's current situation in laboratory animal research and risk factors affecting occupational health. Compliance surveys were conducted by questionnaire via Questionnaire Star (an application app on the Internet) in Chinese. Thirty-nine anonymous questionnaires were collected. The surveyed institution has established 24 types of ABSL (Animal Biosafety Laboratory) and biosafety management organizations and systems equipped with safety equipment. Our study also suggests that the principal of the laboratory establishment fails to perform supervision and inspection responsibilities, the inappropriate design of the animal biosafety laboratory, non-standardized personnel training and health management, non-strict waste management, and insufficient emergency management. The administrative department and work units should address certain safety and occupational health risks in laboratory animal research. The author proposes control strategies based on organizational guarantee, personnel management, emergency management, etc., to help prevent risks and ensure occupational health. Due to regional limitations and small sample size, the results may not be generalisable to all parts of the world. However, some of the key common issues may also be present in other regions, so we believe that this research still has some relevance., (© 2023 The Authors.)
- Published
- 2024
- Full Text
- View/download PDF
10. Clamparene: Synthesis, Structure, and Its Application in Spontaneous Formation of 3D Porous Crystals.
- Author
-
Shi B, Jiang J, An H, Qi L, Wei TB, Qu WJ, and Lin Q
- Abstract
Macrocyclic arenes have emerged as pivotal scaffolds in supramolecular chemistry. Despite their significant contributions to molecular recognition and diverse applications, challenges persist in the development of macrocyclic arene-based crystalline materials, particularly in achieving porosity and addressing limitations in adsorption efficiency resulting from the small cavity sizes of existing macrocyclic arenes. In this study, we present the design and synthesis of a novel macrocyclic arene, clamparene ( CLP ), featuring a rigid backbone, easy synthesis, and a sizable cavity. CLP self-assembles into one-dimensional sub-nanotubes that further organize into a three-dimensional porous framework in the solid state. The crystalline solid of CLP exhibits potential as a porous crystalline adsorbent for various benzene-based contaminants with rapid adsorption kinetics, large uptake amounts, and good recyclability.
- Published
- 2024
- Full Text
- View/download PDF
11. Single-institution experience of venetoclax combined with azacitidine in newly diagnosed acute myeloid leukemia patients.
- Author
-
Yu H, Wang C, Lei Y, Li L, Wang H, Wang G, Xing L, Guan J, Song J, Wu Y, Liu H, Qu W, Wang X, Shao Z, and Fu R
- Subjects
- Aged, Humans, Middle Aged, Retrospective Studies, Bridged Bicyclo Compounds, Heterocyclic therapeutic use, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Azacitidine therapeutic use, Leukemia, Myeloid, Acute drug therapy, Sulfonamides
- Abstract
To retrospectively analyze the efficacy and safety of venetoclax combined with azacitidine (VEN + AZA) in the treatment of elderly patients with acute myeloid leukemia. The clinical data for 57 AML patients treated with the VEN + AZA regimen from December 2019 to November 2022 in the Department of Hematology, General Hospital of Tianjin Medical University, were collected. Of the 57 patients included in this study, the mean age of onset was 69.89 (±8.88) years. The median follow-up time was 8.57 months, and the median OS time was 11.50 months. The ORR, CR rate, and MRD (<0.1%) negativity rate were 87.5%, 68.8%, and 58.3%, respectively. The median OS was longer in patients who achieved CR/CRi and who were MRD-negative than in those who did not. MRD negativity was less likely to be achieved in patients aged ≥75 years and with ECOG scores of ≥3. Compared to traditional intensive chemotherapy, MRD negative was achieved more quickly with VEN + AZA regimens in patients with newly diagnosed AML. Advanced age and ECOG score were risk factors for negative MRD. The dominant adverse reactions were hematological adverse events. VEN + AZA regimens in elderly unfit patients with previously untreated newly diagnosed AML have sufficient efficacy and safety., 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 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
12. Enantioselective Cyanofunctionalization of Aromatic Alkenes via Radical Anions.
- Author
-
Zhang B, Li TT, Mao ZC, Jiang M, Zhang Z, Zhao K, Qu WY, Xiao WJ, and Chen JR
- Abstract
Alkene radical ions constitute an integral and unique class of reactive intermediates for the synthesis of valuable compounds because they have both unpaired spins and charge. However, relatively few synthetic applications of alkene radical anions have emerged due to a dearth of generally applicable and mild radical anion generation approaches. Precise control over the chemo- and stereoselectivity in alkene radical anion-mediated processes represents another long-standing challenge due to their high reactivity. To overcome these issues, here, we develop a new redox-neutral strategy that seamlessly merges photoredox and copper catalysis to enable the controlled generation of alkene radical anions and their orthogonal enantioselective cyanofunctionalization via distonic-like species. This new strategy enables highly regio-, chemo-, and enantioselective hydrocyanation, deuterocyanation, and cyanocarboxylation of alkenes without stoichiometric reductants or oxidants under visible light irradiation. This protocol provides a new blueprint for the exploration of the transformation potential of alkene radical anions.
- Published
- 2024
- Full Text
- View/download PDF
13. Development of a Microheater with a Large Heating Area and Low Thermal Stress in the Heating Area.
- Author
-
Zhang T, Pan Z, Zhang C, Xiong L, Yang C, Zhang J, Shi M, Wang Y, and Qu W
- Abstract
In this paper, a microheater that can absorb thermal stress and has a large heating area is demonstrated by optimizing the structure and process of the microheater. Four symmetrically distributed elongated support beam structures were machined around the microheater via deep silicon etching. This design efficiently mitigates the deformation of the heated region caused by thermal expansion and enhances the structural stability of the microheater. The updated microheater no longer converts the work area into a thin film; instead, it creates a stable heating platform that can uniformly heat a work area measuring 10 × 10 mm
2 . The microheater is verified to have high temperature uniformity and structural stability in finite element simulation. Finally, thorough investigations of electrical-thermal-structural characterization were conducted. The test findings show that the new microheater can achieve 350 °C with a power consumption of 6 W and a thermal reaction time of 22 s. A scan of its whole plane reveals that the surface of the working area of the new microheater is flat and does not distort in response to variations in temperature, offering good structural stability.- Published
- 2024
- Full Text
- View/download PDF
14. Weight, CYP3A5 Genotype, and Voriconazole Co-administration Influence Tacrolimus Initial Dosage in Pediatric Lung Transplantation Recipients with Low Hematocrit based on a Simulation Model.
- Author
-
Hu K, Pan JJ, Qu WQ, He SM, Yang Y, Shi HZ, Zhang YJ, Chen X, and Wang DD
- Subjects
- Humans, Child, Hematocrit, Body Weight, Dose-Response Relationship, Drug, Adolescent, Antifungal Agents administration & dosage, Computer Simulation, Voriconazole administration & dosage, Voriconazole pharmacokinetics, Tacrolimus administration & dosage, Tacrolimus pharmacokinetics, Lung Transplantation, Cytochrome P-450 CYP3A genetics, Cytochrome P-450 CYP3A metabolism, Genotype, Immunosuppressive Agents administration & dosage, Immunosuppressive Agents pharmacokinetics
- Abstract
Objective: The method of administering the initial doses of tacrolimus in recipients of pediatric lung transplantation, especially in patients with low hematocrit, is not clear. The present study aims to explore whether weight, CYP3A5 genotype, and voriconazole co-administration influence tacrolimus initial dosage in recipients of pediatric lung transplantation with low hematocrit based on safety and efficacy using a simulation model., Methods: The present study utilized the tacrolimus population pharmacokinetic model, which was employed in lung transplantation recipients with low hematocrit., Results: For pediatric lung transplantation recipients not carrying CYP3A5*1 and without voriconazole, the recommended tacrolimus doses for weights of 10-13, 13-19, 19-22, 22-35, 35-38, and 38-40 kg are 0.03, 0.04, 0.05, 0.06, 0.07, and 0.08 mg/kg/day, which are split into two doses, respectively. For pediatric lung transplantation recipients carrying CYP3A5*1 and without voriconazole, the recommended tacrolimus doses for weights of 10-18, 18-30, and 30-40 kg are 0.06, 0.08, 0.11 mg/kg/day, which are split into two doses, respectively. For pediatric lung transplantation recipients not carrying CYP3A5*1 and with voriconazole, the recommended tacrolimus doses for weights of 10-20 and 20-40 kg are 0.02 and 0.03 mg/kg/day, which are split into two doses, respectively. For pediatric lung transplantation recipients carrying CYP3A5*1 and with voriconazole, the recommended tacrolimus doses for weights of 10-20, 20-33, and 33-40 kg are 0.03, 0.04, and 0.05 mg/kg/day, which are split into two doses, respectively., Conclusion: The present study is the first to recommend the initial dosages of tacrolimus in recipients of pediatric lung transplantation with low hematocrit using a simulation model., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
- Published
- 2024
- Full Text
- View/download PDF
15. Systemic subchronic toxicity and comparison of four selenium nutritional supplements by 90-day oral exposure in Sprague-Dawley rats.
- Author
-
Yu L, Li Y, Qu W, Zheng Y, Chen X, Fu S, Qu J, Tian J, Cheng S, Cong X, Fan B, and Wang C
- Subjects
- Male, Female, Rats, Animals, Rats, Sprague-Dawley, Sperm Motility, Dietary Supplements toxicity, Sodium Selenite toxicity, Saccharomyces cerevisiae, Selenium toxicity
- Abstract
To evaluate and compare the safety of four selenium supplements, namely Se-enriched peptides (SeP), yeast selenium (SeY), L-Se-methylselenocysteine (L-SeMc) and sodium selenite (Na
2 SeO3 ), the subchronic toxicity study was designed by 90-day gavage administration in Sprague-Dawley rats. The doses of SeP, SeY, L-SeMc and Na2 SeO3 were 0.15, 0.30 and 0.60 mg/kg bw/day, with additional dose of 0.45 mg/kg L-SeMc (All dose calculated as Se). Symptoms like growling, hair loss and significant weight loss were found at 0.60 mg/kg of L-SeMc, but not in other groups. At the dose of 0.60 mg/kg, females in Na2 SeO3 , SeY and L-SeMc groups showed significant elevations in ALT and/or ALP. Pathologic manifestations such as bile duct hyperplasia and cholestasis were predominantly found in females at 0.6 mg/kg of L-SeMc and SeY groups, and in males at same dose of L-SeMc group showed marked testicular atrophy. 0.60 mg/kg of SeY and Na2 SeO3 , and 0.30, 0.45, 0.60 mg/kg of L-SeMc induced significant reductions in sperm motility rates, rapid movement and amount. In conclusion, the NOAEL of SeP, SeY, L-SeMc, Na2 SeO3 was all 0.30 mg/kg for female, and 0.60, 0.30, 0.15 and 0.30 mg/kg for male respectively. Liver and reproductive organs are possible toxic target organs of hyper selenium., 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 Ltd. All rights reserved.)- Published
- 2023
- Full Text
- View/download PDF
16. A Two-Step Fluorescence-Resonance Energy Transfer System Constructed by Platinum(II) Metallacycle Based Molecular Recognition.
- Author
-
Shi B, Qin P, Li W, Feng H, Zhou Y, Chai Y, Qu WJ, Wei TB, Zhang YM, and Lin Q
- Abstract
Considerable progress in the construction of efficient fluorescence-resonance energy transfer (FRET) systems has promoted the development of artificial energy transfer materials. However, despite recent advances, the exploration of efficient and easy strategies to fabricate novel supramolecular systems with FRET activities is still a challenge. Here, we report that a two-step FRET system was successfully achieved, driven by platinum metallacycle based host-guest interactions. The two-step FRET system is used for the preparation of a white-light-emitting diode and serves as a nanoreactor for the photosynthetic process. This work offers a strategy for the fabrication of FRET systems and opens opportunities for functional materials constructed by platinum(II) metallacycle based host-guest interactions.
- Published
- 2023
- Full Text
- View/download PDF
17. Deep-penetration functionalized cuttlefish ink nanoparticles for combating wound infections with synergetic photothermal-immunologic therapy.
- Author
-
Qu WQ, Fan JX, Zheng DW, Gu HY, Yu YF, Yan X, Zhao K, Hu ZB, Qi BW, Zhang XZ, and Yu AX
- Subjects
- Mice, Animals, Photothermal Therapy, Escherichia coli, Ink, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents therapeutic use, Polymers pharmacology, Decapodiformes, Methicillin-Resistant Staphylococcus aureus, Nanoparticles, Wound Infection drug therapy
- Abstract
The challenge of wound infections post-surgery and open trauma caused by multidrug-resistant bacteria poses a constant threat to clinical treatment. As a promising antimicrobial treatment, photothermal therapy can effectively resolve the problem of drug resistance in conventional antibiotic antimicrobial therapy. Here, we report a deep-penetration functionalized cuttlefish ink nanoparticle (CINP) for photothermal and immunological therapy of wound infections. CINP is decorated with zwitterionic polymer (ZP, namely sulfobetaine methacrylate-methacrylate copolymer) to form CINP@ZP nanoparticles. Natural CINP is found to not only exhibit photothermal destruction of methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli), but also trigger macrophages-related innate immunity and enhance their antibacterial functions. The ZP coating on the surface of CINP enables nanoparticles to penetrate into deeply infected wound environment. In addition, CINP@ZP is further integrated into the thermosensitive Pluronic F127 gel (CINP@ZP-F127). After in situ spraying gel, CINP@ZP-F127 is also documented notable antibacterial effects in mice wound models infected with MRSA and E. coli. Collectively, this approach combining of photothermal therapy with immunotherapy can promote delivery efficiency of nanoparticles to the deep foci of infective wounds, and effectively eliminate wound infections., 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 Ltd. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
18. Design and Analysis of XY Large Travel Micro Stage Based on Secondary Symmetric Lever Amplification.
- Author
-
Zhang T, Xiong L, Pan Z, Zhang C, Qu W, Wang Y, and Yang C
- Abstract
This study presents a newly developed piezoelectric drive mechanism for the purpose of designing, analyzing, and testing a micro-positioning platform driven by piezoelectric actuators. The platform incorporates a piezoelectric ceramic actuator and a flexible hinge drive and features a symmetrical two-stage lever (STSL) amplification mechanism and a parallelogram output structure. The implementation of this design has led to notable enhancements in the dynamic properties of the platform, thereby eliminating the undesired parasitic displacement of the mechanism. An analytical model describing the fully elastic deformation of the platform is established, which is further verified by finite element simulation. Finally, the static and dynamic performances of the platform are comprehensively evaluated through experiments. A closed-loop control strategy is adopted to eliminate the nonlinear hysteresis phenomenon of the piezoceramic actuator (PEA). The experimental results show that the piezoelectric micro-actuator platform has a motion range of 97.84 μm × 98.03 μm; the output coupling displacement error is less than 1%; the resolutions of the two axes are 8.1 nm and 8 nm, respectively; and the x -axis and y -axis trajectory tracking errors are both 0.6%. The piezoelectric micromotion platform has good dynamic properties, precision, and stability. The design has a wide application potential in the field of micro-positioning.
- Published
- 2023
- Full Text
- View/download PDF
19. Extracting Mutant-Affected Protein-Protein Interactions via Gaussian-Enhanced Representation and Contrastive Learning.
- Author
-
Liu D, Zhang Y, Yang M, Yuan J, and Qu W
- Subjects
- Mutation, Normal Distribution, Precision Medicine, Learning, Clinical Relevance
- Abstract
Genetic mutations can impact protein-protein interactions (PPIs) in biomedical literature. Automated extraction of PPIs affected by gene mutations from biomedical literature can aid in evaluating the clinical importance of gene variations, which is crucial for the advancement of precision medicine. In this study, a new model called the Gaussian-enhanced representation model (GRM) is introduced for PPI extraction. The model utilizes the Gaussian probability distribution to produce a target entity representation based on the BioBERT pretraining model. The GRM assigns more weight to target protein entities and their adjacent entities, resolving the problem of lengthy input text and scattered distribution of target entities in the PPI extraction task. Additionally, the model introduces a supervised contrast learning approach to enhance its effectiveness and robustness. Experiments on the BioCreative VI data set demonstrate that our proposed GRM model has achieved state-of-the-art performance.
- Published
- 2023
- Full Text
- View/download PDF
20. Platinum Metallacycle-Based Molecular Recognition: Establishment and Application in Spontaneous Formation of a [2]Rotaxane with Light-Harvesting Property.
- Author
-
Shi B, Li X, Chai Y, Qin P, Zhou Y, Qu WJ, Lin Q, Wei TB, Sun Y, and Stang PJ
- Abstract
Macrocyclic molecule-based host-guest systems, which provide contributions for the design and construction of functional supramolecular structures, have gained increasing attention in recent years. In particular, platinum(II) metallacycle-based host-guest systems provide opportunities for chemical scientists to prepare novel materials with various functions and structures due to the well-defined shapes and cavity sizes of platinum(II) metallacycles. However, the research on platinum(II) metallacycle-based host-guest systems has been given little attention. In this article, we demonstrate the host-guest complexation between a platinum(II) metallacycle and a polycyclic aromatic hydrocarbon molecule, naphthalene. Taking advantage of metallacycle-based host-guest interactions and the dynamic property of reversible Pt coordination bonds, a [2]rotaxane is efficiently prepared by employing a template-directed clipping procedure. The [2]rotaxane is further applied to the fabrication of an efficient light-harvesting system with multi-step energy transfer process. This work comprises an important supplement to macrocycle-based host-guest systems and demonstrates a strategy for efficient production of well-defined mechanically interlocked molecules with practical values., (© 2023 Wiley-VCH GmbH.)
- Published
- 2023
- Full Text
- View/download PDF
21. A novel PEGylated form of granulocyte colony-stimulating factor, mecapegfilgrastim, for peripheral blood stem cell mobilization in patients with hematologic malignancies.
- Author
-
Wen J, Zhou Q, Shi L, Xu F, Liu Y, Su J, Zhang Y, Qu W, and Yue J
- Subjects
- Humans, Hematopoietic Stem Cell Mobilization, Retrospective Studies, Granulocyte Colony-Stimulating Factor, Polyethylene Glycols, Leukocyte Count, Peripheral Blood Stem Cells, Heterocyclic Compounds, Hematologic Neoplasms
- Abstract
Background: The Pegylated recombinant human granulocyte colony stimulating factor (PEG-rhG-CSF) has longer half-life and is given once only, which is more comfortable for patients. We aimed to evaluate the efficacy of mecapegfilgrastim for hematopoietic stem cell (HSC) mobilization in patients with hematologic malignancies and to explore the potential factors related to HSC mobilization., Methods: A retrospective analysis was performed on patients who underwent HSC mobilization in the hematology department of Mianyang Central Hospital from April 2016 to November 2022. The number of CD34 + cells collected was compared between the patients receiving mecapegfilgrastim (PEG group) and those receiving recombinant human granulocyte colony-stimulating factor (rhG-CSF group), and the possible factors for mobilization failure were analyzed., Results: The success rates of collecting CD34 + cells in the PEG group and rhG-CSF group were 80.6% and 67.7%, respectively (χ = 1.444, P = 0.229). The median CD34 + cell counts were 3.62 × 10^6/kg and 2.92 × 10^6/kg (P = 0.178), respectively. After combination with plerixafor for mobilization, the median number of CD34 + cells collected in the PEG group and rhG-CSF group were 3.64 × 10^6/kg and 3.92 × 10^6/kg, respectively, with no significant difference (P = 0.754). There was no significant difference in hematopoietic cell recovery or infection between the groups (P > 0.05). Multivariate analysis showed that more than 5 cycles of chemotherapy (OR = 15.897, 95% CI: 1.766-143.127, P = 0.014), a precollection WBC count < 32 × 10^9/L (OR = 14.441, 95% CI: 2.180-95.657, P = 0.006) and a precollection to premobilization lymphocyte ratio < 1.7 (OR = 11.388, 95% CI: 2.129-60.915, P = 0.004) were independent risk factors for HSC mobilization failure., Conclusions: The HSC mobilization efficacy of mecapegfilgrastim in patients with hematologic malignancies was comparable to that of rhG-CSF, and combination with plerixafor for mobilization was feasible and effective. Patients with more than 5 cycles of chemotherapy before HSC mobilization, a precollection WBC count lower than 32 × 10^9/L, and a precollection lymphocyte count less than 1.7 times the premobilization lymphocyte count have a high probability of HSC mobilization failure., (© 2023. The Author(s).)
- Published
- 2023
- Full Text
- View/download PDF
22. Raf kinase inhibitor protein combined with phosphorylated extracellular signal-regulated kinase offers valuable prognosis in gastrointestinal stromal tumor.
- Author
-
Qu WZ, Wang L, Chen JJ, and Wang Y
- Subjects
- Humans, Extracellular Signal-Regulated MAP Kinases metabolism, Mitogen-Activated Protein Kinase Kinases metabolism, Phosphatidylethanolamine Binding Protein metabolism, Prognosis, Gastrointestinal Stromal Tumors pathology
- Abstract
Background: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. Tyrosine kinase inhibitors, such as imatinib, have been used as first-line therapy for the treatment of GISTs. Although these drugs have achieved considerable efficacy in some patients, reports of resistance and recurrence have emerged. Extracellular signal-regulated kinase 1/2 (ERK1/2) protein, as a member of the mitogen-activated protein kinase (MAPK) family, is a core molecule of this signaling pathway. Nowadays, research reports on the important clinical and prognostic value of phosphorylated-ERK (P-ERK) and phosphorylated-MAPK/ERK kinase (P-MEK) proteins closely related to raf kinase inhibitor protein (RKIP) have gradually emerged in digestive tract tumors such as gastric cancer, colon cancer, and pancreatic cancer. However, literature on the expression of these downstream proteins combined with RKIP in GIST is scarce. This study will focus on this aspect and search for answers to the problem., Aim: To detect the expression of RKIP, P-ERK, and P-MEK protein in GIST and to analyze their relationship with clinicopathological characteristics and prognosis of this disease. Try to establish a new prognosis evaluation model using RKIP and P-ERK in combination with analysis and its prognosis evaluation efficacy., Methods: The research object of our experiment was 66 pathologically diagnosed GIST patients with complete clinical and follow-up information. These patients received surgical treatment at China Medical University Affiliated Hospital from January 2015 to January 2020. Immunohistochemical method was used to detect the expression of RKIP, P-ERK, and P-MEK proteins in GIST tissue samples from these patients. Kaplan-Meier method was used to calculate the survival rate of 63 patients with complete follow-up data. A Nomogram was used to represent the new prognostic evaluation model. The Cox multivariate regression analysis was conducted separately for each set of risk evaluation factors, based on two risk classification systems [the new risk grade model vs the modified National Institutes of Health (NIH) 2008 risk classification system]. Receiver operating characteristic (ROC) curves were used for evaluating the accuracy and efficiency of the two prognostic evaluation systems., Results: In GIST tissues, RKIP protein showed positive expression in the cytoplasm and cell membrane, appearing as brownish-yellow or brown granules. The expression of RKIP was related to GIST tumor size, NIH grade, and mucosal invasion. P-ERK protein exhibited heterogeneous distribution in GIST cells, mainly in the cytoplasm, with occasional presence in the nucleus, and appeared as brownish-yellow granules, and the expression of P-ERK protein was associated with GIST tumor size, mitotic count, mucosal invasion, and NIH grade. Meanwhile, RKIP protein expression was negatively correlated with P-ERK expression. The results in COX multivariate regression analysis showed that RKIP protein expression was not an independent risk factor for tumor prognosis. However, RKIP combined with P-ERK protein expression were identified as independent risk factors for prognosis with statistical significance. Furthermore, we establish a new prognosis evaluation model using RKIP and P-ERK in combination and obtained the nomogram of the new prognosis evaluation model. ROC curve analysis also showed that the new evaluation model had better prognostic performance than the modified NIH 2008 risk classification system., Conclusion: Our experimental results showed that the expression of RKIP and P-ERK proteins in GIST was associated with tumor size, NIH 2008 staging, and tumor invasion, and P-ERK expression was also related to mitotic count. The expression of the two proteins had a certain negative correlation. The combined expression of RKIP and P-ERK proteins can serve as an independent risk factor for predicting the prognosis of GIST patients. The new risk assessment model incorporating RKIP and P-ERK has superior evaluation efficacy and is worth further practical application to validate., Competing Interests: Conflict-of-interest statement: The authors report grants from Natural Science Foundation of Liaoning Province, China, during the conduct of the study. We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted and entitled 'Raf kinase inhibitor protein combined with phosphorylated extracellular signal-regulated kinase offers valuable prognosis in gastrointestinal stromal tumor'., (©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
23. Asymmetric [3 + 2] Photocycloaddition of β-Keto Esters and Vinyl Azides by Dual Photoredox/Nickel Catalysis.
- Author
-
Zhou XS, Zhang Z, Qu WY, Liu XP, Xiao WJ, Jiang M, and Chen JR
- Abstract
Photocatalytic [3 + 2] cycloadditions and control of stereochemistry have remained a substantial challenge, particularly in the context of heterocycle synthesis; sporadic successful examples have involved enantioselective [3 + 2] photocycloaddition between redox-active direct group-containing cyclopropanes and alkenes for creation of cyclopentanes. Herein, we report a cooperative catalytic system comprising a chiral nickel Lewis acid catalyst and an organic photocatalyst fueled by visible-light irradiation that allows for the hitherto elusive asymmetric [3 + 2] photocycloaddition of β-keto esters with vinyl azides under redox-neutral conditions. This protocol enables highly enantioselective construction of polycyclic densely substituted 3,4-dihydro-2 H -pyrrole heterocycles featuring two contiguous tetrasubstituted carbon stereocenters, including a useful chiral N , O -ketal motif that is not easily accessible with other catalytic methods. Mechanistic studies revealed that the overall reactivity relies on the seamless integration of dual roles of nickel catalysts by the catalytic formation of the substrate/Ni complex, assisting both photoredox event and enantioselective radical addition.
- Published
- 2023
- Full Text
- View/download PDF
24. Efficient detection of L-aspartic acid and L-glutamic acid by self-assembled fluorescent microparticles with AIE and FRET activities.
- Author
-
Qu WJ, Liu T, Chai Y, Ji D, Che YX, Hu JP, Yao H, Lin Q, Wei TB, and Shi B
- Subjects
- Animals, Fluorescence Resonance Energy Transfer, Amino Acids, Peptides, Coloring Agents, Glutamic Acid, Aspartic Acid chemistry
- Abstract
Amino acids play an important role in the formation of proteins, enzymes, hormones and peptides in animals. Moreover, aspartic acid and glutamic acid have a critical impact on the central nervous system as excitatory neurotransmitters. Here, we report the highly selective detection of L-glutamic acid (L-Glu) and L-aspartic acid (L-Asp) using fluorescent microparticles constructed by the combination of aggregation-induced emission and self-assembly-induced Förster resonance energy transfer.
- Published
- 2023
- Full Text
- View/download PDF
25. [Application of Mecapegfilgrastim for Peripheral Blood Hematopoietic Stem Cell Mobilization in Patients With Hematologic Neoplasms and Analysis of Predictors for Poor Mobilization].
- Author
-
Wen JJ, Shi L, Xu F, Zhou QL, Liu YP, Su J, Zhang Y, Qu W, Yue J, Liang XG, and Hu H
- Subjects
- Humans, Hematopoietic Stem Cell Mobilization methods, Retrospective Studies, Granulocyte Colony-Stimulating Factor therapeutic use, Antigens, CD34, Heterocyclic Compounds, Hematologic Neoplasms therapy, Hematopoietic Stem Cell Transplantation
- Abstract
Objective: To evaluate the efficacy of applying mecapegfilgrastim for peripheral blood hematopoietic stem cell (PBSC) mobilization in patients with hematologic neoplasms, and to investigate the influencing factors of PBSC collection., Methods: Patients who underwent PBSC mobilization in the Department of Hematology, Mianyang Central Hospital between April 2016 and May 2022 were retrospectively analyzed. The CD34
+ cell collection results of two groups, the mecapegfilgrastim group ( n =28), or the PEG group, and the recombinant human granulocyte colony-stimulating factor (rhG-CSF) group ( n =30), were compared, and the influencing factors of collection failure were analyzed., Results: The success rates of CD34+ cells collection in the PEG group and the rhG-CSF group were 75.0% and 63.3%, respectively ( P >0.05). The median CD34+ cell counts were 3.37×106 /kg and 2.68×106 /kg, respectively, showing no significant difference. After combined mobilization with plerixafor, the median counts of CD34+ cells collected in the PEG group and rhG-CSF group were 4.23×106 /kg and 3.26×106 /kg, respectively, showing no significant difference ( P >0.05). There was no significant difference in hematopoietic system reconstruction and infections between the two groups ( P >0.05). Multivariate analysis found non-plasma cell disease (odds ratio [ OR ]=19.697, 95% confidence interval [ CI ] : 1.501-258.537, P =0.023), anemia before collection ( OR =18.571, 95% CI : 1.354-254.775, P =0.029) and white blood cell count before collection under 32×109 L-1 ( OR =85.903, 95% CI : 4.947-1491.807, P =0.002) to be independent risk factors for PBSC collection failure., Conclusion: The effect of PBSC mobilization with mecapegfilgrastim was comparable to that of rhG-CSF in patients with hematologic neoplasms. Furthermore, combined mobilization with plerixafor was feasible and effective. Patients with leukemia or lymphoma, anemia, and WBC<32×109 L-1 before stem cell collection have a high probability of PBSC collection failure., (Copyright© by Editorial Board of Journal of Sichuan University (Medical Sciences).)- Published
- 2023
- Full Text
- View/download PDF
26. PM 2.5 source apportionment identified with total and soluble elements in positive matrix factorization.
- Author
-
Li W, Qi Y, Qu W, Qu W, Shi J, Zhang D, Liu Y, Zhang Y, Zhang W, Ren D, Ma Y, Wang X, Yi L, Sheng L, and Zhou Y
- Subjects
- Vehicle Emissions analysis, Environmental Monitoring methods, Dust analysis, Aerosols analysis, Coal analysis, Nitrates analysis, China, Seasons, Particulate Matter analysis, Air Pollutants analysis
- Abstract
Source apportionments of urban aerosols identified with positive matrix factorization (PMF) are sensitive to input variables. So far, total elements were frequently included as effective factors in PMF-based source apportionment. We investigated the advances to involve soluble parts of elements in the source apportionment with four data sets of PM
2.5 composition observed at a coastal city (Qingdao) in northern China: water-soluble ions plus organic and elemental carbon (IC set), the IC set plus total elements (ICTE set), the IC set plus soluble elements (ICSE set), and the IC set plus both total elements and soluble elements (ICAE set). The apportionments of six sources, including secondary sulfate, secondary nitrate, secondary oxalate, sea salt, biomass burning and dust, were identified with the IC set. In comparison, pollutants from vehicle + coal combustion, ship emissions, waste incineration and industrial activities were also identified with the ICTE, ICSE, or ICAE sets. We found that the PMF solutions of the ICAE set could distinguish aged and fresh dust, and identify fly ash and aged pollutants from industrial sources. The profiles and corresponding time series of vehicle + coal combustion, secondary aerosols, ship emissions, sea salt, and biomass burning emissions identified with the four data sets were very similar, while discrepancies were encountered for waste incineration, dust, and industrial sources. These results indicate the benefits and potentials with total and soluble elements involved in PMF-based source apportionments., 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 © 2022. Published by Elsevier B.V.)- Published
- 2023
- Full Text
- View/download PDF
27. FTL004, an anti-CD38 mAb with negligible RBC binding and enhanced pro-apoptotic activity, is a novel candidate for treatments of multiple myeloma and non-Hodgkin lymphoma.
- Author
-
Zhang G, Guo C, Wang Y, Zhang X, Liu S, Qu W, Chen C, Yan L, Yang Z, Zhang Z, Jiang X, Chen X, Liu H, Lai Q, Wei X, Lu Y, Zhao S, Deng H, Wang Y, Yu L, Yu H, Wu Y, Su Z, Chen P, Ren Z, Yu M, Qu F, Luo Y, Gou L, Li Q, Huang Y, Ma F, and Yang J
- Subjects
- Humans, Cryoelectron Microscopy, ADP-ribosyl Cyclase 1, Antibodies, Monoclonal pharmacology, Antibodies, Monoclonal therapeutic use, Erythrocytes pathology, Multiple Myeloma pathology, Antineoplastic Agents pharmacology, Antineoplastic Agents therapeutic use, Lymphoma, Non-Hodgkin drug therapy
- Abstract
Anti-CD38 monoclonal antibodies (mAbs), daratumumab, and isatuximab have represented a breakthrough in the treatment of multiple myeloma (MM). Recently, CD38-based mAbs were expected to achieve increasing potential beyond MM, which encouraged us to develop new anti-CD38 mAbs to meet clinical needs. In this study, we developed a novel humanized anti-CD38 antibody, FTL004, which exhibited enhanced pro-apoptotic ability and negligible binding to red blood cells (RBCs). FTL004 presented a better ability to induce direct apoptosis independent of Fc-mediated cross-linking against lymphoma and MM cell lines as well as primary myeloma cells derived from MM patients. For instance, FTL004 induced RPMI 8226 cells with 55% early apoptosis cells compared with 20% in the isatuximab-treated group. Of interest, FTL004 showed ignorable binding to CD38 on human RBCs in contrast to tumor cells, even at concentrations up to 30 μg/mL. Furthermore, with an engineered Fc domain, FTL004 displayed stronger antibody-dependent cellular cytotoxicity (ADCC) against CD38+ malignant cells. In vivo MM and non-Hodgkin lymphoma tumor xenograft models showed that FTL004 possessed an effective anti-tumor effect. Cryo-electron microscopy structure resolved two epitope centers of FTL004 on CD38: one of which was unique while the other partly overlapped with that of isatuximab. Taken together, FTL004 distinguishes it from other CD38 targeting mAbs and represents a potential candidate for the treatment of MM and non-Hodgkin lymphoma., (© 2022. The Author(s).)
- Published
- 2022
- Full Text
- View/download PDF
28. Fluorinated leaning pillar[6]arene: synthesis, structure and selective iodide anion binding by anion-π interactions.
- Author
-
Li W, Qin P, Zhao XX, Qu WJ, Lin Q, Yao H, Wei TB, Zhang YM, Liu Y, and Shi B
- Subjects
- Electrons, Iodides, Quaternary Ammonium Compounds
- Abstract
Anion recognition has continuously attracted significant attention due to its important role in environmental and biological sciences. Here, we have designed and synthesized an electron-deficient fluorinated leaning pillar[6]arene 1 that contains two tetrafluoro-benzene units. The electron-deficient fluorinated leaning pillar[6]arene 1 is capable of selectively recognizing iodide anions to form a host-guest complex with 1 : 1 stoichiometry driven by anion-π interactions. Our work ascribes this selective recognition to the preorganization of macrocycles, suitable cavity size, and the effect of anion-π interactions. The innovative application of this macrocycle offers us a new avenue for the design of selective receptors for anions and electron-deficient macrocyclic arenes.
- Published
- 2022
- Full Text
- View/download PDF
29. [Quality evaluation of commercial Ginseng Radix et Rhizoma Rubra based on multi-component quantitative analysis].
- Author
-
Qu WJ, Su JM, Xu WJ, Li CS, Yang LL, Zhang SY, Wang X, Cheng SQ, Wen J, and Li XR
- Subjects
- Rhizome chemistry, Plant Roots chemistry, Chromatography, High Pressure Liquid, Panax, Ginsenosides analysis, Drugs, Chinese Herbal
- Abstract
To comprehensively evaluate the quality of commercial Ginseng Radix et Rhizoma Rubra, 43 batches of commercial Ginseng Radix et Rhizoma Rubra were collected to determine the content of nine ginsenosides Rg_1, Re, Rb_1, Rk_3, Rh_4, 20(S)-Rg_3, 20(R)-Rg_3, Rk_1, and Rg_5 by high performance liquid chromatography(HPLC). The quality of the commercial Ginseng Radix et Rhizoma Rubra was evaluated by correlation analysis, principal component analysis, factor analysis, analysis of variance(ANOVA), and cluster heatmap analysis. The content determination indicated that the content of common ginsenosides in commercial Ginseng Radix et Rhizoma Rubra were higher while that of rare ginsenosides were lower. Multivariate statistical analysis revealed that ginsenosides Rg_1 and Rb_1 were significantly positively correlated with rare ginsenosides, and Rg_1, Rb_1 and rare ginsenosides played an important role in evaluating the quality of commercial Ginseng Radix et Rhizoma Rubra. In combination with the processing principle and current quality situation of Ginseng Radix et Rhizoma Rubra, it is recommended to improve the content limit of Rb_1 in the existing quality standards.
- Published
- 2022
- Full Text
- View/download PDF
30. [Diversity of soil seed banks under different vegetation types in the southeastern margin of the Tengger Desert, China].
- Author
-
Sun YS, Chang XX, Zhang X, Wang L, Qu WJ, Qin WC, Zhang B, and Niu JS
- Subjects
- China, Ecosystem, Forests, Humans, Seeds, Soil, Chenopodiaceae, Seed Bank
- Abstract
To explore the dynamics and distribution of soil seed banks under different vegetation types in desert, and reveal the community succession tendency and diversity characteristics of different vegetative types, we took Populus euphratica community, Caragana intermedia community, Leymus secalinus community and Agriophyllum squarrosum community as the research objects in the southeastern margin of the Tengger Desert. Samples of 0-2 cm, 2-5 cm, 5-10 cm, and 10-20 cm soil layers were collected. We examined the characteristics of soil seed banks and their relationships with vegetation. The results showed that there were 13 plant species in the soil seed banks of the four vegetation types, belonging to 3 families and 12 genera, with the annual and biennial herbs dominated and much Chenopodiaceae species. The soil seed bank density was generally low, with an order of C. intermedia community > L. secalinus community > P. euphratica community > A. squarrosum community. The seed bank density and species richness decreased with increasing soil depth. Based on the Shannon index, Simpson index, Pielou index and Patrick richness analysis, the order of species diversity in soil seed banks was P. euphratica community > L. secalinus community > C. intermedia community > A. squarrosum community. The similarity coefficient between soil seed bank and vegetation was the highest in C. intermedia community, followed by P. euphratica community, and the lowest in P. euphratica community and L. secalinus community. On the whole, the arbor forest P. euphratica community was the most stable one, while the sandy land A. squarrosum community was the most vulnerable.
- Published
- 2022
- Full Text
- View/download PDF
31. Ankle Arthrodesis Combined With Mosaic Bone Autograft Transplantation for End-Stage Ankle Osteoarthritis With Large Cysts of Talar Dome.
- Author
-
Liu T, Dong SJ, Li WL, Wang D, Zheng YP, and Qu WQ
- Subjects
- Ankle, Ankle Joint diagnostic imaging, Ankle Joint surgery, Arthrodesis methods, Autografts, Bone Transplantation, Humans, Retrospective Studies, Treatment Outcome, Cysts, Osteoarthritis diagnostic imaging, Osteoarthritis surgery
- Abstract
End-stage ankle osteoarthritis with large cysts of talar dome can be challenging to treat. Twenty patients diagnosed as end-stage ankle arthritis with large talar cysts between 04/2010 and 02/2016 were randomly divided into experimental group (10 cases) and conventional group (10 cases) by random number method. Patients in the experimental group were treated with ankle arthrodesis combined with a concomitant procedure of mosaic bone autograft transplantation, the conventional group under the ankle arthrodesis. The operation time, intraoperative blood loss, postoperative hospital stay, the time of bone union, and postoperative height of the talus between the 2 groups were compared. The preoperative and postoperative American Orthopaedic Foot and Ankle Society ankle-hindfoot scale score were also recorded and compared. There was no significant difference in the operation time, intraoperative blood loss, and postoperative hospital stay between the 2 groups. The postoperative height of the talus body and the time of bone union were better in the experimental group than that in the conventional group (p < .05). The results of follow-up showed that the American Orthopaedic Foot and Ankle Society scores of the conventional group were lower than those in the experimental group (p < .001). And the incidence of complication (10%) in the experimental group was significantly lower than that in the conventional group (40%). The use of tibiotalar arthrodesis combined with mosaic bone autograft transfer may be potentially an effective option for the treatment of end-stage ankle arthritis with large talar cysts., (Copyright © 2022. Published by Elsevier Inc.)
- Published
- 2022
- Full Text
- View/download PDF
32. Identification of a Signature for Predicting Prognosis and Immunotherapy Response in Patients with Glioma.
- Author
-
Zong WF, Liu C, Zhang Y, Zhang SJ, Qu WS, and Luo X
- Abstract
Glioma is a deadly tumor that accounts for the vast majority of brain tumors. Thus, it is important to elucidate the molecular pathogenesis and potential diagnostic and prognostic biomarkers of glioma. In the present study, gene expression profiles of GSE2223 were obtained from the Gene Expression Omnibus (GEO) database. Core modules and hub genes related to glioma were identified using weighted gene coexpression network analysis (WGCNA) and protein-protein interaction (PPI) network analysis of differentially expressed genes (DEGs). After a series of database screening tests, we identified 11 modules during glioma progression, followed by six hub genes (RAB3A, TYROBP, SYP, CAMK2A, VSIG4, and GABRA1) that can predict the prognosis of glioma and were validated in glioma tissues by qRT-PCR. The CIBERSORT algorithm was used to analyze the difference of immune cell infiltration between the glioma and control groups. Finally, Identification VSIG4 for immunotherapy response in patients with glioma demonstrating utility for immunotherapy research., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2022 Wei-Feng Zong et al.)
- Published
- 2022
- Full Text
- View/download PDF
33. Tibetan Medicine Shi-Wei-Gan-Ning-San Alleviates Carbon Tetrachloride-Induced Chronic Liver Injury by Inhibiting TGF- β 1 in Wistar Rats.
- Author
-
Jia Z, Zheng Y, Fu S, Qu J, Tian J, Qu W, and Mei Z
- Abstract
Background: Shi-Wei-Gan-Ning-San (SWGNS) is a classic Tibetan prescription, which has obvious clinical effects in the treatment of viral hepatitis, fatty liver, liver fibrosis, liver cirrhosis, liver cancer, and other liver injuries. However, animal studies and mechanism studies are still lacking. This study aimed to investigate its hepatoprotective efficacy and pharmacological mechanism in animal experiments., Methods: Chronic liver injury was induced by oral administration of carbon tetrachloride (CCl
4 ) in Wistar rats for 13 weeks. SWGNS was administered orally to rats at doses of 235, 705, and 1410 mg/kg for 13 weeks. Blood samples were collected for biochemical, ELISA, and radioimmunoassay. Livers were harvested for H&E and immunohistochemical staining. The major constituents of SWGNS were analyzed by HPLC. In vitro experiments were used to explore the protective effect of Crocin on BRL-3A in the environment of H2 O2 ., Results: SWGNS reversed weight loss is induced by CCl4 . Serum assays showed that SWGNS reduced CCl4 -induced alanine aminotransferase, aspartate aminotransferase, total bilirubin, and γ -glutamyltransferase levels and increased the total protein and albumin levels. Histopathological evaluation showed that SWGNS alleviated hepatic steatosis, fibrosis, and inflammation. Furthermore, SWNGS reduced CCl4 -induced elevations of TGF- β 1, hyaluronic acid, laminin, and collagen IV in serum and reduced the high expression of α -SMA in tissues. Moreover, Crocin I and II are the main components of SWGNS. Crocin attenuated the damaging effects of H2 O2 on BRL-3A., Conclusions: In conclusion, SWGNS alleviated CCl4 -induced chronic liver injury by inhibiting the TGF- β 1 pathway. This plays an important role in promoting traditional Tibetan medicine in clinical practice., Competing Interests: The authors declare that there are no conflicts of interest., (Copyright © 2022 Ziming Jia et al.)- Published
- 2022
- Full Text
- View/download PDF
34. Acute Treatment with Nicotinamide Riboside Chloride Reduces Hippocampal Damage and Preserves the Cognitive Function of Mice with Ischemic Injury.
- Author
-
Cheng YH, Zhao JH, Zong WF, Wei XJ, Xu Z, Yuan Y, Jiang YF, Luo X, Wang W, and Qu WS
- Subjects
- Animals, Cognition, Hippocampus metabolism, Infarction, Middle Cerebral Artery metabolism, Mice, Niacinamide analogs & derivatives, Pyridinium Compounds, Chlorides, NAD metabolism
- Abstract
Nicotinamide adenine dinucleotide (NAD) is a critical cosubstrate for enzymes involved in supplying energy to the brain. Nicotinamide riboside (NR), an NAD
+ precursor, emerges as a neuroprotective factor after chronic brain insults. However, researchers have not determined whether it improves cognition after acute ischemia. In the present study, mice with middle cerebral artery occlusion were treated with NR chloride (NRC, 300 mg/kg, IP., 20 min after reperfusion). The results of the Morris water maze test revealed better recovery of learning and memory function in the NRC-treated group. Acute NRC treatment decreased hippocampal infarct volume, reduced neuronal loss and apoptosis in the hippocampus. Western blot and high-performance liquid chromatography assays of hippocampal tissues revealed that the activation of Sirtin-1 and adenosine 5' monophosphate-activated protein kinase was increased, the NAD content was elevated, and the production of adenosine triphosphate was strengthened by NRC. Collectively, acute NRC treatment increased the energy supply, reduced the neuronal loss and apoptosis, protected the hippocampus and ultimately promoted the recovery of cognitive function after brain ischemia., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)- Published
- 2022
- Full Text
- View/download PDF
35. [Expression and Significance of PD-1 and ICOS in Patients with Primary Immune Thrombocytopenia].
- Author
-
Fu Z, Qu W, Shao ZH, Wang HQ, Xing LM, Dong XF, Liu ZY, Li XN, Zhang Y, and Ding SX
- Subjects
- CD8-Positive T-Lymphocytes metabolism, Flow Cytometry, Humans, Inducible T-Cell Co-Stimulator Protein metabolism, Platelet Count, Programmed Cell Death 1 Receptor metabolism, Purpura, Thrombocytopenic, Idiopathic
- Abstract
Objective: To investigate the expression of programmed death receptor-1 (PD-1) and inducible costimulator (ICOS) on the surface of CD8
+ T cells in peripheral blood of patients with primary immune thrombocytopenia (ITP), and explore the roles of PD-1 and ICOS in the occurrence and development of ITP., Methods: A total of 28 ITP patients treated in Tianjin Medical University General Hospital from September to December 2020 were selected, including 13 patients with newly diagnosed ITP, 15 patients with chronic ITP, and 22 healthy volunteers were recruited as control group. Flow cytometry was used to detect the expression levels of PD-1 and ICOS, and evaluate their correlation with clinical indicators., Results: The percentage of CD8+ T cells in ITP patients of chronic group was higher than that of the newly diagnosed group and the control group (P<0.05). The expression level of PD-1 on CD8+ T cells in ITP patients of newly diagnosed group and chronic group were significantly lower than that of the control group (P<0.05), while the expression level of ICOS were significantly higher (P<0.05). In ITP patients, PD-1 was negatively correlated with platelet count (r=-0.4942, P<0.01), but positively with ICOS (r=0.4342). PD-1 and ICOS were both negatively correlated with lymphocyte count (rPD-1 =-0.4374; rICOS =-0.4492)., Conclusion: In ITP patients, the unbalanced expression of PD-1 and ICOS may interfere with the immune homeostasis of the body, which can be used as a therapeutic target for ITP patients.- Published
- 2022
- Full Text
- View/download PDF
36. [Research Progress of Short Chain Fatty Acids in the Pathogenesis of Immune Thrombocytopenia--Review].
- Author
-
Li XN and Qu W
- Subjects
- Adolescent, Fatty Acids, Volatile metabolism, Humans, Intestines, Gastrointestinal Microbiome, Purpura, Thrombocytopenic, Idiopathic
- Abstract
The gut microbiota is an important part of the human body, and it's also the largest genome in the human body. Recent studies on the gut microbiota have found that it plays an important role in human immune diseases. In recent years, the methods of sequencing gut microbiota has teen improved, thus dysregulation of the gut microbiota is found in many immune diseases, and the most widely studied mechanism is the short-chain fatty acids (SCFA), which is a metabolite of gut microbiota. The role of short-chain fatty acids in intestinal barrier, IgA immunity, dendritic cells and regulatory T cells has become increasingly clear. The mechanisms of short-chain fatty acids in regulating immunity and its role in the pathogenesis of immune thrombocytopenia were covered in this review, so as to provide a new idea for the treatment of immune thrombocytopenia in the future.
- Published
- 2022
- Full Text
- View/download PDF
37. Asthma susceptibility in prenatal nicotine-exposed mice attributed to β-catenin increase during CD4 + T cell development.
- Author
-
Wen X, Liu HX, Chen LZ, Qu W, Yan HY, Hou LF, Zhao WH, Feng YT, and Ping J
- Subjects
- Animals, CD4-Positive T-Lymphocytes metabolism, Female, Humans, Mice, Nicotine metabolism, Nicotine toxicity, Phosphatidylinositol 3-Kinases metabolism, Pregnancy, Proto-Oncogene Proteins c-akt metabolism, Vitamins, beta Catenin genetics, beta Catenin metabolism, Asthma chemically induced, Asthma metabolism, Prenatal Exposure Delayed Effects chemically induced
- Abstract
Cigarette smoke is a common global environmental pollutant. Asthma, the most frequent allergic airway disease, is related to maternal exposure to cigarette smoke. Our previous studies demonstrated that prenatal exposure to nicotine (PNE), the major active product of smoking, impairs fetal thymopoiesis and CD4
+ T cell development after birth. This study aimed to investigate whether PNE contributes to asthma susceptibility through CD4+ T cell development alterations. First, A PNE model was established by administering 3 mg/kg/day nicotine to maternal mice, and then an ovalbumin-induced asthma model was established in the offspring. Further, β-catenin and downstream pathways were inhibited in vitro to confirm the molecular mechanisms underlying the phenotype observed during the in vivo phase. The results showed that PNE induced Th2 and Th17 biases at developmental checkpoints and aggravated asthma symptoms in the offspring. In fetuses, PNE up-regulated α7 nAChR, activated PI3K-AKT, promoted β-catenin level increase, and established potential Th2- and Th17-biased gene expression patterns during thymopoiesis, which persisted after birth. Similar results were also observed in 1 μM nicotine-treated thymocytes in vitro. Moreover, inhibiting PI3K-AKT by LY294002 abrogated nicotine-mediated β-catenin level increase and thymopoiesis abnormalities, and an α7 nAChR antagonist (α-btx) also reversed nicotine-induced PI3K-AKT activation. Our findings provide strong evidence that PNE is a risk factor for T cell deviation and postnatal asthma, and revealed that nicotine-induced β-catenin level increase induces thymopoiesis abnormalities., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
38. LRP8, modulated by miR-1262, promotes tumour progression and forecasts the prognosis of patients in breast cancer.
- Author
-
Li L, Qu WH, Ma HP, Wang LL, Zhang YB, and Ma Y
- Subjects
- Cell Line, Tumor, Cell Movement, Cell Proliferation, Female, Gene Expression Regulation, Neoplastic, Humans, Prognosis, Up-Regulation, Breast Neoplasms genetics, Breast Neoplasms metabolism, LDL-Receptor Related Proteins genetics, MicroRNAs genetics, MicroRNAs metabolism
- Abstract
This research was designed to detect the function of low-density lipoprotein receptor (LDLR)-related protein 8 (LRP8) in breast cancer (BC). Our results revealed that LRP8 was highly expressed in BC tissues and cell lines compared with human normal breast tissues. The poor prognosis of patients with BC was associated with the up-regulation of LRP8 while inversely connected with overexpression of miR-1262. Functionally, LRP8 depletion in BC cells impaired the proliferative, clonogenic, invasive, and migratory capabilities, which was consistent with the effects of upregulated miR-1262. Bioinformatics prediction and luciferase reporter assay confirmed that miR-1262 was an upstream factor for LRP8 and negatively regulated the expression of LRP8. Further experiments illustrated that the co-transfection of miR-1262 antamir and si-LRP8 could significantly suppress the promoting impacts caused by the transfection of miR-1262 antamir alone. These findings highlighted that LRP8 accelerated the BC development by contributing cellular aggressiveness, which was modulated by miR-1262.
- Published
- 2022
- Full Text
- View/download PDF
39. An Organoplatinum(II) Metallacycle-Based Supramolecular Amphiphile and Its Application in Enzyme-Responsive Controlled Release.
- Author
-
Shi B, Qin P, Chai Y, Qu WJ, Shangguan L, Lin Q, Zhang YM, Sun Y, Huang F, and Stang PJ
- Subjects
- Delayed-Action Preparations, alpha-Amylases, Cyclodextrins, Nanostructures
- Abstract
Enzyme-responsive nanomaterials are emerging as important candidates for bioanalytical and biomedical applications due to their good biocompatibilities and sensitivities. However, the lack of promising operation platforms compatible with enzyme responsiveness greatly limits the scope and functionality of smart materials. Herein, we report the design and synthesis of a naphthalene-functionalized organoplatinum(II) metallacycle 1 by means of coordination-driven self-assembly, which is subsequently exploited as the organometallic platform to enable enzyme-responsive supramolecular materials. Specifically, a [2 + 2] self-assembled metallacycle 1 first self-assembles into nanosheets in aqueous solution, which can further transform into vesicles with the introduction of β-cyclodextrin (β-CD) because of the formation of a bola-type supramolecular amphiphile β-CD-1 . Interestingly, these vesicles show rare α-amylase responsiveness, as demonstrated by structurally transforming back into nanosheets after the addition of α-amylase to their solutions due to the enzyme-induced degradation of cyclodextrins. We also demonstrate the potential application of the self-assembled vesicles in amylase-responsive controlled release.
- Published
- 2022
- Full Text
- View/download PDF
40. Stemness Subtypes and Scoring System Predict Prognosis and Efficacy of Immunotherapy in Soft Tissue Sarcoma.
- Author
-
Gu HY, Qu WQ, Peng HH, Yu YF, Jiang ZZ, Qi BW, and Yu AX
- Subjects
- Humans, Machine Learning, Prognosis, Immunotherapy, Sarcoma therapy
- Abstract
Tumor stemness has been reported to play important roles in cancers. However, a comprehensive analysis of tumor stemness remains to be performed to investigate the specific mechanisms and practical values of stemness in soft tissue sarcomas (STS). Here, we applied machine learning to muti-omic data of patients from TCGA-SARC and GSE21050 cohorts to reveal important roles of stemness in STS. We demonstrated limited roles of existing mRNAsi in clinical application. Therefore, based on stemness-related signatures (SRSs), we identified three stemness subtypes with distinct stemness, immune, and metabolic characteristics using consensus clustering. The low-stemness subtype had better prognosis, activated innate and adaptive immunity (e.g., infiltrating B, DC, Th1, CD8+ T, activated NK, gamma delta T cells, and M1 macrophages), more enrichment of metabolic pathways, more sites with higher methylation level, higher gene mutations, CNA burdens, and immunogenicity indicators. Furthermore, the 16 SRS-based stemness prognostic index (SPi) was developed, and we found that low-SPi patients with low stemness had better prognosis and other characteristics similar to those in the low-stemness subtype. Besides, low-stemness subtype and low-SPi patients could benefit from immunotherapy. The predictive value of SPi in immunotherapy was more accurate after the addition of MSI into SPi. MSI
low SPilow patients might be more sensitive to immunotherapy. In conclusion, we highlighted mechanisms and practical values of the stemness in STS. We also recommended the combination of MSI and SPi which is a promising tool to predict prognosis and achieve precise treatments of immunotherapy in STS., 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 © 2022 Gu, Qu, Peng, Yu, Jiang, Qi and Yu.)- Published
- 2022
- Full Text
- View/download PDF
41. Detection of Aliphatic Aldehydes by a Pillar[5]arene-based Fluorescent Supramolecular Polymer with Vaporchromic Behavior.
- Author
-
Shi B, Chai Y, Qin P, Zhao XX, Li W, Zhang YM, Wei TB, Lin Q, Yao H, and Qu WJ
- Subjects
- Aldehydes, Coloring Agents, Polymers chemistry, Quaternary Ammonium Compounds, Calixarenes chemistry
- Abstract
The detection of volatile aliphatic aldehydes is of significance because of their chemical toxicity, physical volatility and widespread applications in chemical industrial processes. In this work, the direct detection of aliphatic aldehydes is tackled using a pillar[5]arene-based fluorescent supramolecular polymer with vaporchromic behavior. Thin films with strong orange-yellow fluorescence are prepared by coating the linear supramolecular polymer on glass sheets. When the thin films are exposed to aliphatic aldehydes with different carbon chain lengths, they can selectively sensing n-butyraldehyde (C
4 ) and caprylicaldehyde (C8 ), accompanied by fluorescence quenching, indicating that the supramolecular polymer is a highly selective vapochromic response material for aliphatic aldehydes with long alkyl chains., (© 2022 Wiley-VCH GmbH.)- Published
- 2022
- Full Text
- View/download PDF
42. Characterization of the metabolites of trans -resveratrol-3- O -glucoside in monkeys and dogs.
- Author
-
Su MY, Dong C, Wan JY, Qu WD, and Zhou MJ
- Subjects
- Animals, Chromatography, High Pressure Liquid, Chromatography, Liquid, Dogs, Haplorhini, Molecular Structure, Stilbenes, Glucosides
- Abstract
In this study, a liquid chromatography-tandem multi-stage mass spectrometry (LC/MS
n ) method was established to characterize the metabolites of TRG in monkeys and dogs. A total of seven metabolites of TRG besides the prototype were found, which were identified as TR (M1), TRN (M2), trans -resveratrol-4'- O -glucuronide (M2'), trans -resveratrol-3- O -glucoside-4'- O -glucuronide (M3), trans -resveratrol-3- O -glucoside-5- O -glucuronide (M3'), trans -resveratrol-3-sulfate (M4) and trans -resveratrol-4'-sulfate (M4'). Additionally, the metabolic pathways of TRG in monkeys and dogs were proposed. There were also species differences of metabolism of TRG between monkeys and dogs.- Published
- 2022
- Full Text
- View/download PDF
43. Galectin-1 Contributes to Vascular Remodeling and Blood Flow Recovery After Cerebral Ischemia in Mice.
- Author
-
Cheng YH, Jiang YF, Qin C, Shang K, Yuan Y, Wei XJ, Xu Z, Luo X, Wang W, and Qu WS
- Subjects
- Animals, Cerebral Infarction metabolism, Endothelial Cells metabolism, Galectin 1 genetics, Galectin 1 metabolism, Ischemia, Mice, Mice, Knockout, Neovascularization, Physiologic, Vascular Remodeling, Brain Ischemia metabolism, Vascular Endothelial Growth Factor A metabolism
- Abstract
Galectin-1 is found in the vasculature and has been confirmed to promote angiogenesis in several cancer models. Furthermore, galectin-1 has been demonstrated to improve the recovery of cerebral ischemia. However, whether vascular remodeling contributes to this improvement is still unknown. In the present study, photochemical cerebral ischemia was induced in both galectin-1-treated (2 μg/day, i.c.v, 3 days) and galectin-1 knockout mice. Laser speckle imaging and immunofluorescent staining demonstrated that circulation and vascular remodeling in the ischemic cortex were improved by galectin-1 treatment but disrupted in galectin-1 knockout mice. Western blot analysis showed that the expression of matrix metallopeptidase-9 and vascular endothelial growth factor (VEGF) was regulated by galectin-1 in vivo. To determine how galectin-1 influences endothelial cells, the expression of galectin-1 in bEnd.3 cells was increased by transfection with an expression plasmid and knocked down by siRNA. As demonstrated by quantitative RT-PCR and western blot analysis, the expression of metallopeptidase-9, VEGF, and VEGF receptors was upregulated by galectin-1 overexpression but downregulated after galectin-1 knockdown. Flow cytometry, Transwell assay, and capillary-like tube formation assay were performed on cells after gene manipulation as well as cells treated by exogenous galectin-1 after anoxia. It demonstrated that galectin-1 potentiated the cell proliferation, migration capacity, and tube formation ability. Taken together, these data suggest that by targeting vascular remodeling, galectin-1 contributes to the restoration of blood flow, which promotes the recovery of mice after cerebral ischemic insults., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2022
- Full Text
- View/download PDF
44. A Case Report of Imatinib-induced Acute Heart Failure and Literature Review.
- Author
-
Li Z, Qu W, He X, Zhao X, Luo Y, and Wang J
- Subjects
- Benzamides, Drug Resistance, Neoplasm, Humans, Imatinib Mesylate adverse effects, Male, Piperazines, Pyrimidines adverse effects, Retrospective Studies, Antineoplastic Agents adverse effects, Heart Failure chemically induced
- Abstract
Patients with Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML), gastrointestinal stromal tumors (GISTs) or acute lymphoblastic leukemia (ALL) are appropriate candidates for medical treatment using imatinib. Here, we report a case of imatinib-induced acute heart failure in a patient with ALL and retrospectively analyse the adverse reactions of imatinib. The patient was a 45-year man with Ph+ and bcr-abl positive (bcr-abl+) ALL. He was treated with imatinib approximately four months ago. At that time, he had no risk factors for cardiac disease, and his heart function was normal. Then, four months after starting imatinib, he manifested signs of acute heart failure. A retrospective analysis of the adverse reactions in 100 cases of leukemia patients, who took imatinib in the past three years, indicated a rare incidence of congestive heart failure among those patients. Our experience in treating the patient suggests that brain natriuretic peptide levels and cardiac doppler examinations should be monitored closely in these patients. Key Words: Imatinib, Acute lymphoid leukemia, Acute heart failure.
- Published
- 2022
- Full Text
- View/download PDF
45. Chemical characters and protective effect of Baqi Lingmao formula on experimental liver injury.
- Author
-
Liu LL, Chen YX, Liu LL, Li M, Xu R, Qu WS, Yin JY, Zhang X, Zhou ZH, Gao YT, Nie D, Shan JJ, and Gao YQ
- Subjects
- Animals, Aspartate Aminotransferases metabolism, Concanavalin A, Hepatocytes metabolism, Hepatocytes pathology, Liver, Mice, Chemical and Drug Induced Liver Injury drug therapy, Chemical and Drug Induced Liver Injury metabolism
- Abstract
Objective: To investigate the chemical characters of water-extract of Baqi Lingmao formula (BQLM formula) and its effects on anti-liver injury in model mice and live cells., Methods: BQLM formula was composed of ten herbal medicines. We determined the contents of alkaloids, saponins, phenolic acids and flavonoid in BQLM formula by UV spectrophotometry. The active components of alkaloids and phenolic acids in BQLM formula were identified by HPLC chromatography. The anti-hepatic injury effects of BQLM formula were investigated with concanavalin A (ConA)-induced hepatitis model of mice, human liver LO2 and HepG2.2.15 cells., Results: BQLM formula (2 and 10 g/kg, orally) significantly improved the damages of liver tissues and functions caused by ConA in mice, reduced the infiltration of inflammatory cells into liver and inhibited the inflammatory cytokine secretion of interferon-γ, tumor necrosis factor-α and interleukin-6. BQLM formula simultaneously decreased the levels of alanine aminotransferase and aspartate aminotransferase of liver and serum, and recovered the superoxide dismutase and catalase activities of liver to normal levels in ConA-induced hepatic-injury mice. The serum of BQLM formula group stimulated the human liver LO2 cell proliferation in vitro. Further, BQLM formula obviously promoted the proliferation of normal hepatocytes (LO2 cells) and inhibited the hepatocytes death induced by ConA. It also significantly inhibited the proliferation of HepG2.2.15 cells and decreased the secretion of HBsAg and HBeAg in vitro., Conclusions: BQLM formula has anti-inflammation and anti-hepatitis virus Beffects, and is capable of improving liver injury in vivo and in vitro.
- Published
- 2021
- Full Text
- View/download PDF
46. Trigger finger at the wrist caused by an intramuscular lipoma within the carpal tunnel: A case report.
- Author
-
Huang C, Jin HJ, Song DB, Zhu Z, Tian H, Li ZH, Qu WR, and Li R
- Abstract
Background: Trigger finger at the wrist, which occurs with finger movement, is an uncommon presentation. Few reports describing cases of trigger finger at the wrist have been published. Thus, we present a case of an intramuscular lipoma arising from an anomalous flexor digitorum muscle belly in a 48-year-old female patient causing painful finger triggering at the wrist and carpal tunnel syndrome (CTS)., Case Summary: A 48-year-old woman with complaints of a catching sensation during wrist motion and a progressive tingling sensation on the palmar aspect of the right hand for approximately 2 years was referred to our hospital. Triggering of the index to middle finger was evident with a palpable and audible clunk over the carpal tunnel during passive motion. Tinel's sign was positive over the carpal tunnel of the right wrist with a positive Phalen's test. Nerve conduction studies of the median nerve demonstrated a right CTS. Ultrasound examination revealed a 2.5 cm × 2.0 cm subcutaneous hyperechoic mass with no obvious blood flow at the wrist of the right arm. Surgical excision of the tumor and muscle mass led to a resolution of the patient's symptoms, and any triggering or discomfort disappeared. The patient has had no evidence of recurrence at more than 1 year of follow-up., Conclusion: Triggering of the fingers at the wrist is rare. It must be noted that there are many possible causes and types of triggering or clicking around the wrist. Accurate diagnosis is mandatory to avoid inaccurate treatment of patients with trigger wrist. During the diagnosis and treatment of CTS, attention should be paid to the variation of tendon tissue in the carpal tunnel, to avoid only focusing on the release of transverse carpal ligament and ignoring the removal of anomalous muscle belly., Competing Interests: Conflict-of-interest statement: The authors declare that they have no competing interests., (©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
47. Complete chloroplast genome sequence of Oxytropis glabra (Leguminosae).
- Author
-
Liu S, Wei YL, Si W, Qu WR, Yang TG, Wu ZH, and Jiao PP
- Abstract
Oxytropis glabra DC. is a perennial poisonous plant to livestock belonging to the genus Oxytropis, Leguminosae, mainly distributed in Northwestern China. As a poisonous grass, this species protects plant diversity in degraded grasslands by sheltering adjacent plants. In this study, the complete chloroplast genome with a total size of 122,094 bp was reported. Our annotations showed that the chloroplast genome contains 109 genes, including 76 protein-coding genes, 29 tRNA genes, and four rRNA genes. This work presents complete chloroplast genome information, which will be valuable for studying the evolution and genetic diversity of O. glabra., Competing Interests: No potential conflict of interest was reported by the author(s)., (© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)
- Published
- 2021
- Full Text
- View/download PDF
48. Pancreatic cancer: A review of epidemiology, trend, and risk factors.
- Author
-
Hu JX, Zhao CF, Chen WB, Liu QC, Li QW, Lin YY, and Gao F
- Subjects
- Humans, Incidence, Pancreas, Risk Factors, United States, Gastrointestinal Neoplasms, Pancreatic Neoplasms epidemiology
- Abstract
Despite rapid advances in modern medical technology and significant improvements in survival rates of many cancers, pancreatic cancer is still a highly lethal gastrointestinal cancer with a low 5-year survival rate and difficulty in early detection. At present, the incidence and mortality of pancreatic cancer are increasing year by year worldwide, no matter in the United States, Europe, Japan, or China. Globally, the incidence of pancreatic cancer is projected to increase to 18.6 per 100000 in 2050, with the average annual growth of 1.1%, meaning that pancreatic cancer will pose a significant public health burden. Due to the special anatomical location of the pancreas, the development of pancreatic cancer is usually diagnosed at a late stage with obvious clinical symptoms. Therefore, a comprehensive understanding of the risk factors for pancreatic cancer is of great clinical significance for effective prevention of pancreatic cancer. In this paper, the epidemiological characteristics, developmental trends, and risk factors of pancreatic cancer are reviewed and analyzed in detail., Competing Interests: Conflict-of-interest statement: All the authors of this paper declare that there is no conflict of interest to declare., (©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
49. Complete plastid genome sequence of Halimodendron halodendron (Leguminosae).
- Author
-
Yan WJ, Yang TG, Qin ED, Qu WR, Wu ZH, Jiao PP, and Liu H
- Abstract
Halimodendron halodendron (Pall.) Voss. is a deciduous shrub belonging to the genus Halimodendron , Leguminosae, and is mainly distributed in dry areas. This species can be used for saline-alkali soil improvement and sand fixation. The complete plastid genome of H. halodendron first reported here is 129,342 bp in length, and contains 110 genes, including 76 protein coding genes, 30 tRNA genes, and 4 rRNA genes. A total of 105 simple sequence repeats (SSRs) were identified in the chloroplast genome. This information will be useful for study on the evolution and genetic diversity of Halimodendron halodendron in the future., Competing Interests: No potential conflict of interest was reported by the authors., (© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)
- Published
- 2021
- Full Text
- View/download PDF
50. Two generation reproduction toxicity study of GmDREB3 gene modified wheat in Wistar rats.
- Author
-
Tian J, Ke X, Yuan Y, Yang W, Tang X, Qu J, Qu W, Fu S, Zheng Y, Fan J, Zhuo Q, Yang X, Liu J, and Fan B
- Subjects
- Animals, Behavior, Animal drug effects, Body Weight drug effects, Brain drug effects, DNA-Binding Proteins genetics, Female, Male, Organ Size drug effects, Plants, Genetically Modified genetics, Rats, Wistar, Soybean Proteins genetics, Glycine max genetics, Transcription Factors genetics, Triticum genetics, Rats, Animal Feed toxicity, Food, Genetically Modified toxicity, Plants, Genetically Modified chemistry, Reproduction drug effects, Triticum chemistry
- Abstract
To study reproductive toxicity of gene modified wheat generated by introducing DREB3 (drought response element binding protein 3) gene, Wistar rats of were allocated into 3 groups and fed with DREB3 gene modified wheat mixture diet (GM group), non-gene modified wheat mixture diet (Non-GM group) and AIN-93 diet (Control group) from parental generation (F0) to the second offspring (F2). GM wheat and Non-GM wheat, Jimai22, were both formulated into diets at a ratio of 69.55% according to AIN93 diet for rodent animals. Compared with non-GM group, no biologically related differences were observed in GM group rats with respect to reproductive performance such as fertility rate, gestation rate, mean duration, hormone level, reproductive organ pathology and developmental parameters such as body weight, body length, food consumption, neuropathy, behavior, immunotoxicity, hematology and serum chemistry. In conclusion, no adverse effect were found relevant to GM wheat in the two generation reproduction toxicity study, indicating the GM wheat is a safe alternative for its counterpart wheat regarding to reproduction toxicity., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.