645 results on '"Xu ZF"'
Search Results
2. Is Reasonable of the Criteria for the Release Isolation and Discharge of the Latest Clinical Practice Guidelines of 2019-nCov in China?
- Author
-
Xu, ZF, primary
- Published
- 2020
- Full Text
- View/download PDF
3. Modal analysis of central impression cylinder based on fluid–solid coupling method.
- Author
-
Hou, HP, Rui, TT, Deng, R, Xu, ZF, and Liu, SH
- Subjects
MODE shapes ,FINITE element method ,PRINTING equipment ,PRODUCT quality - Abstract
As a key component of satellite flexographic printing equipment, the vibration characteristics of the central impression cylinder have an important effect on the product quality. In order to improve dynamic characteristic of the central impression cylinder, the modal analysis on the central impression cylinder is carried out in combination with finite element software in this paper. Then, the modal properties are systematically compared between the central impression cylinder with circulating cooling water and without. The results show that the natural frequency of the central impression cylinder is greatly reduced based on the fluid–solid coupling method. Simultaneously, the natural frequencies and mode shapes of the central impression cylinder based on the finite element analysis are verified by an experimental test. The simulation results are in good agreement with the experimental results, indicating the effectiveness of the finite element model and experimental method used in this study. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. Relationship between high-mobility group box 1 overexpression in ovarian cancer tissue and serum: a meta-analysis
- Author
-
Wang HP, Li ZJ, Sun YL, Xu ZF, Han JJ, Song B, Song WT, Qin C, and Yin L
- Subjects
lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 - Abstract
Haipeng Wang,1,2 Zengjun Li,2 Yanlai Sun,2 Zhongfa Xu,2 Jianjun Han,2 Bao Song,3 Wentao Song,1,2 Chen Qin,1,2 Lei Yin1,2 1Department of Surgery, Shandong Academy of Medical Sciences, University of Jinan, Jinan, Shandong, People’s Republic of China; 2Department of General Surgery, Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, University of Jinan, Jinan, Shandong, People’s Republic of China; 3Cancer Research Center, Shandong Provincial Key Laboratory of Oncology, Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, University of Jinan, Jinan, Shandong, People’s Republic of China Objective: To implement a meta-analysis to investigate the relationship between high-mobility group box 1 (HMGB1) overexpression in the tissue and serum of ovarian cancer patients, and to evaluate its prognostic significance.Methods: Searches were made of China National Knowledge Infrastructure, EMBASE, WanFang, PubMed, MEDLINE, and Web of Science databases up to August 2015, with no language or style restrictions. Reference lists of related studies were also carefully reviewed to identify additional articles.Results: The literature search identified a total of 12 relevant studies on HMGB1 expression for inclusion in the meta-analysis: seven in ovarian tumor tissue, four in ovarian tumor patient serum, and one in both tissue and serum. HMGB1 protein levels in ovarian cancer tissues were notably higher than those in normal ovarian tissues with no evidence of heterogeneity between studies (RD=0.64, 95% confidence interval (CI): 0.57–0.70, Z=18.70, P
- Published
- 2015
5. Cross-talk between endothelial cells and tumor via delta-like ligand4/Notch/PTEN signaling inhibits lung cancer growth
- Author
-
He-Xin Yan, Wen Wen, Z.-S. Li, Tang H, Jin Ding, Gao Ck, Huajing Wang, Ding Xy, Dan Cao, Wang S, Kun Wu, Liu C, Gen-Sheng Feng, Guo Ln, Cheng Chen, and Xu Zf
- Subjects
Cancer Research ,Cell signaling ,Lung Neoplasms ,Angiogenesis ,Blotting, Western ,Notch signaling pathway ,Fluorescent Antibody Technique ,Mice, Nude ,Cell Communication ,Real-Time Polymerase Chain Reaction ,medicine.disease_cause ,Immunoenzyme Techniques ,Mice ,Growth factor receptor ,Carcinoma, Non-Small-Cell Lung ,Human Umbilical Vein Endothelial Cells ,Genetics ,medicine ,Animals ,Humans ,PTEN ,RNA, Messenger ,Receptor, Notch1 ,education ,Molecular Biology ,Cells, Cultured ,Adaptor Proteins, Signal Transducing ,Cell Proliferation ,education.field_of_study ,Delta-like ligand 4 ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Calcium-Binding Proteins ,PTEN Phosphohydrolase ,Cell cycle ,Flow Cytometry ,Coculture Techniques ,respiratory tract diseases ,cardiovascular system ,biology.protein ,Cancer research ,Intercellular Signaling Peptides and Proteins ,Carcinogenesis ,Signal Transduction - Abstract
Lung cancer is a leading cause of cancer death in many countries. Notch signaling has been demonstrated to frequently participate in the process of lung carcinogenesis. Delta-like ligand 4 (Dll4) is a vascular-specific ligand of Notch, and has a critical role in the angiogenesis of numerous cancers. However, the role of Dll4 in the cross-talk between endothelial cells (ECs) and tumor cells remains obscure. Herein, our study revealed that Dll4-expressing ECs (EC-Dll4) significantly suppressed the proliferation of neighboring non-small cell lung cancer (NSCLC) cells and attenuated the growth of NSCLC xenograft in nude mice. On the contrary, silencing endothelial Dll4 by its specific interference RNA reversed these effects of Dll4 on NSCLC cell proliferation and tumor formation. Furthermore, activation of Notch1, but not Notch2 or Notch3, was enhanced in NSCLC cells cultured with EC-Dll4, as well as in xenografts induced by a mixture of NSCLC cells and EC-Dll4. Interference of Notch1 significantly attenuated Dll4-mediated suppression of NSCLC cell proliferations, indicating that Dll4/Notch1 signaling negatively modulates the NSCLC growth. Moreover, PTEN expression in NSCLC cells was increased by EC-Dll4 or rhDll4 (recombinant human-Dll4 protein), and the induction was impaired by Notch1 interference suggesting that Dll4 could upregulate PTEN expression by Notch1. Taken together, we conclude that the cross-talk between ECs and NSCLC cells by Dll4/Notch1/PTEN signaling pathway inhibits the growth of NSCLC.
- Published
- 2011
6. Suberoylanilide hydroxamic acid, a novel histone deacetylase inhibitor, improves the development and acetylation level of miniature porcine handmade cloning embryos
- Author
-
Sun, JM, primary, Cui, KQ, additional, Li, ZP, additional, Lu, XR, additional, Xu, ZF, additional, Liu, QY, additional, Huang, B, additional, and Shi, DS, additional
- Published
- 2017
- Full Text
- View/download PDF
7. Pycnogenol, a compound isolated from the bark of pinus maritime mill, attenuates ventilator-induced lung injury through inhibiting NF-κB-mediated inflammatory response
- Author
-
Xia, YF, Zhang, JH, Xu, ZF, and Deng, XM
- Subjects
Original Article ,respiratory system ,respiratory tract diseases - Abstract
Background: During mechanical ventilation, high end-inspiratory lung volume results in a permeability type pulmonary oedema, called ventilator-induced lung injury (VILI). The pathophysiology of ventilator-induced lung injury involves multiple mechanisms, such as excessive inflammation. And pycnogenol is a mixture of flavonoid compounds extracted from pine tree bark that have anti-inflammatory activity. Objective: We investigated the effects of pyncogenol on ventilator-induced lung injury in rats. Methods: Rats were orally administrated with pycnogenol once (30 mg/kg) 2 days before lung injury induction with mechanical ventilation, then the rats were divided into three groups: lung-protective ventilation (LV group, n = 20), injurious ventilation (HV group, n = 20), HV + pycnogenol group (HV + Pyc group, n = 20). Lung specimens and the bronchoalveolar lavage fluid (BALF) were isolated for histopathological examinations and biochemical analyses. Results: Pretreatment with pycnogenol could markedly decrease lung wet/dry ratio, lower myeloperoxidase (MPO) activity and total protein concentration and reduce the production of TNF-α, IL-6, IL-1β and MIP-2 in the BALF in ventilator-induced lung injury rats. Additionally, pycnogenol improved the histology of the lung and significantly inhibited the phosphorylation of NF-κB p65 and the degradation of IκB-α. Conclusion: Pycnogenol treatment could attenuate ventilator-induced lung injury in rats, at least in part, through its ability to reduce the production of inflammatory cytokines via inhibiting the activation of NF-κB, indicating it as a potential therapeutic candidate for ventilator-induced lung injury.
- Published
- 2015
8. Ethanol ablation of hepatocellular carcinoma Up to 5.0 cm by using a multipronged injection needle with high-dose strategy
- Author
-
Kuang, M, Lu, Md, Xie, Xy, Xu, Hx, Xu, Zf, Liu, Gj, Yin, Xy, Huang, Jf, and Lencioni, RICCARDO ANTONIO
- Published
- 2009
9. Repression of chilling-induced ACC accumulation in transgenic citrus by over-production of antisense 1-aminocyclopropane-1-carboxylate synthase RNA
- Author
-
Wong, WS, Li, GG, Ning, W., Xu, ZF, Hsiao, WLW, Zhang, LY, Li, N., Wong, WS, Li, GG, Ning, W., Xu, ZF, Hsiao, WLW, Zhang, LY, and Li, N.
- Abstract
A chilling-inducible ACC synthase gene (CS-ACS1) has recently been identified from Citrus sinensis. This CS-ACS1 gene was constructed in an inverted orientation and placed under the control of the double 35S promoter. The antisense CS-ACS1 transgene was introduced into Carrizo citrange, C. sinensis (L.) Osbeck and Poncirus trifoliate by Agrobacterium-mediated gene transfer. The transformation efficiency in the transformation of citrus stem segment was improved significantly to 87 and 88\% for Poncirus trifoliate (L.) Raf and Carrizo citrange, respectively. The transgenic citrus lines that produce higher level of antisense ACS RNA were found to repress the increase of ACC content following the chilling treatment, This work represents the first example in controlling the ethylene biosynthesis in citrus plants through the genetic engineering approach. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
- Published
- 2001
10. Intrahepatic cholangiocarcinoma and hepatocellular carcinoma: differential diagnosis with contrast-enhanced ultrasound.
- Author
-
Chen LD, Xu HX, Xie XY, Xie XH, Xu ZF, Liu GJ, Wang Z, Lin MX, Lu MD, Chen, Li-Da, Xu, Hui-Xiong, Xie, Xiao-Yan, Xie, Xiao-Hua, Xu, Zuo-Feng, Liu, Guang-Jian, Wang, Zhu, Lin, Man-Xia, and Lu, Ming-De
- Abstract
Objective: We assessed the usefulness of contrast-enhanced ultrasound (CEUS) in the differentiation of intrahepatic cholangiocarcinoma (ICC) and hepatocellular carcinoma (HCC).Methods: The CEUS enhancement patterns of 50 ICCs were retrospectively analysed and compared with 50 HCCs. Two readers independently reviewed the baseline ultrasound (BUS) and CEUS images and the diagnostic performances were evaluated by receiver operating characteristic (ROC) analysis. Time-intensity curves (TIC) were plotted for quantification analysis.Results: In the arterial phase, peripheral rim-like hyperenhancement, heterogeneous hyperenhancement, homogeneous hyperenhancement and heterogeneous hypoenhancement were found in 25, 10, 3 and 12 of the ICCs versus 2, 29, 19 and 0 of the HCCs (P < 0.001), respectively. The diagnostic performance of both readers in terms of the area under the ROC curve (0.745 vs. 0.933 for reader 1, and 0.803 vs. 0.911 for reader 2), sensitivity (28% vs. 90%, and 44% vs. 82%) and accuracy (64% vs. 90%, and 71% vs. 90%) improved significantly after CEUS (all P < 0.05). The interobserver agreement increased from kappa = 0.575 at BUS to kappa = 0.720 after CEUS. TICs demonstrated that the intensities of the peripheral and central portions of the ICCs were lower than those of HCCs (both P < 0.05).Conclusion: CEUS improves the diagnostic performance significantly in the differentiation between ICC and HCC. [ABSTRACT FROM AUTHOR]- Published
- 2010
- Full Text
- View/download PDF
11. Differential diagnosis between benign and malignant gallbladder diseases with real-time contrast-enhanced ultrasound.
- Author
-
Xie XH, Xu HX, Xie XY, Lu MD, Kuang M, Xu ZF, Liu GJ, Wang Z, Liang JY, Chen LD, Lin MX, Xie, Xiao-Hua, Xu, Hui-Xiong, Xie, Xiao-Yan, Lu, Ming-De, Kuang, Ming, Xu, Zuo-Feng, Liu, Guang-Jian, Wang, Zhu, and Liang, Jin-Yu
- Abstract
The value of contrast-enhanced ultrasound (CEUS) in differential diagnosis between benign and malignant gallbladder diseases was investigated. Thirty-three patients with gallbladder carcinomas and 47 with benign gallbladder diseases underwent CEUS. The lesion enhancement time, enhancement extent, pattern, dynamic change of enhancement and the intactness of gallbladder wall were evaluated. In the early phase at CEUS, hyper-, iso-, hypo-, and non-enhancement were found in 84.8% (28/33), 9.1% (3/33), 6.1% (2/33), and 0% (0/33) of gallbladder carcinomas, and 70.3% (33/47), 17.0% (8/47), 2.1% (1/47), and 10.6% (5/47) of benign diseases (p > 0.05). Hyper-enhancement or iso-enhancement in the early phase and then fading out to hypo-enhancement within 35 s after contrast agent administration was found in 90.9% (30/33) of carcinomas and 17.0% (8/47) of benign lesions (p < 0.001). Destruction of the gallbladder wall intactness was absent in benign diseases, whereas it was present in 28 (84.8%) of the 33 carcinomas (p < 0.001). Destruction of gallbladder wall intactness on CEUS yielded the highest capability in differential diagnosis, with sensitivity, specificity, and Youden's index of 84.8% (28/33), 100% (47/47), and 0.85, respectively. Conventional US made correct original diagnoses in 55 (68.8%) patients, whereas CEUS in 77 (96.3%). Thus, CEUS is useful in differential diagnosis between malignant and benign gallbladder diseases. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
12. Does the echogenicity of focal liver lesions on baseline gray-scale ultrasound interfere with the diagnostic performance of contrast-enhanced ultrasound?
- Author
-
Liu GJ, Xu HX, Xie XY, Xu ZF, Zheng YL, Liang JY, Lu MD, Moriyasu F, Liu, Guang-Jian, Xu, Hui-Xiong, Xie, Xiao-Yan, Xu, Zuo-Feng, Zheng, Yan-Ling, Liang, Jin-Yu, Lu, Ming-De, and Moriyasu, Fuminori
- Abstract
The objective was to evaluate whether the echogenicity of focal liver lesions (FLLs) on baseline gray-scale ultrasound (US) interferes with the diagnostic performance of contrast-enhanced US (CEUS) for small FLLs. Three-hundred and eighty-eight patients were examined by real-time CEUS using a sulfur hexafluoride-filled microbubble contrast agent. The images of 114 hyperechoic lesions, 30 isoechoic lesions and 244 hypoechoic lesions were reviewed by two blinded independent readers. A five-point confidence level was used to discriminate malignant from benign lesions, and specific diagnoses were made. The diagnostic performances were evaluated by receiver-operating characteristic (ROC) analysis. The diagnostic performances of CEUS on hyperechoic lesions in terms of the areas (Az) under the ROC curve were 0.987 (reader 1) and 0.981 (reader 2), and were 0.987 (reader 1) and 0.984 (reader 2) for iso- and hypoechoic lesions, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 87.0-95.9%, 93.1-100%, 88.6-100%, 70.0-97.1% and 90.0-95.1%, respectively. The echogenicity of FLLs on baseline gray-scale US does not appear to interfere with the diagnostic ability of CEUS for small FLLs. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
13. Diagnostic performance of contrast-enhanced ultrasound for complex cystic focal liver lesions: blinded reader study.
- Author
-
Lin MX, Xu HX, Lu MD, Xie XY, Chen LD, Xu ZF, Liu GJ, Xie XH, Liang JY, Wang Z, Lin, Man-Xia, Xu, Hui-Xiong, Lu, Ming-De, Xie, Xiao-Yan, Chen, Li-Da, Xu, Zuo-Feng, Liu, Guang-Jian, Xie, Xiao-Hua, Liang, Jin-Yu, and Wang, Zhu
- Abstract
The study was aimed at evaluating the diagnostic performance of contrast-enhanced ultrasound (CEUS) in characterizing complex cystic focal liver lesions (FLLs). Sixty-seven complex cystic FLLs in 65 patients were examined with conventional ultrasound (US) and real-time CEUS. The US and CEUS images were reviewed by a resident radiologist and a staff radiologist independently. Receiver operating characteristic (ROC) analysis was performed to evaluate the diagnostic performance, and the interobserver agreement was analysed. The results showed that complete non-enhancement throughout three phases of CEUS or sustained enhancement in the portal and late phases were exhibited in most benign lesions. Conversely, hypo-enhancement in the late phase was seen in all malignancies. After ROC analysis, the areas (Az) under the ROC curve were 0.774 at US versus 0.922 at CEUS (P=0.047) by the resident radiologist, and 0.917 versus 0.935 (P=0.38) by the staff radiologist. A significant difference in Az between the resident and the staff radiologists was found for US (0.774 versus 0.917, P=0.044), whereas not found for CEUS (0.922 versus 0.935, P=0.42). Interobserver agreement was improved after CEUS (kappa=0.325 at US versus kappa=0.774 at CEUS). Real-time CEUS improves the capability of discrimination between benign and malignant complex cystic FLLs, especially for the resident radiologist. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
14. Comparative transcriptome analysis of Cyperus esculentus and C. rotundus with contrasting oil contents in tubers defines genes and regulatory networks involved in oil accumulation.
- Author
-
Bai X, Tang M, Hu X, Huang P, Wu Y, Chen T, He H, and Xu ZF
- Subjects
- Gene Expression Regulation, Plant, Transcriptome, Genes, Plant, Fatty Acids metabolism, Cyperus genetics, Cyperus metabolism, Plant Tubers metabolism, Plant Tubers genetics, Gene Regulatory Networks, Gene Expression Profiling, Plant Oils metabolism
- Abstract
Plant vegetative organs present great potential for lipid storage, with tubers of Cyperus esculentus as a unique example. To investigate the genome and transcriptomic features of C. esculentus and related species, we sequenced and assembled the C. esculentus genome at the contig level. Through a comparative study of high-quality transcriptomes across 36 tissues from high-oil and intermediate-oil C. esculentus and low-oil Cyperus rotundus, we identified potential genes and regulatory networks related to tuber oil accumulation. First, we identified tuber-specific genes in two C. esculentus cultivars. Second, genes involved in fatty acid (FA) biosynthesis, triacylglycerol synthesis, and TAG packaging presented increased activity in the later stages of tuber development. Notably, tubers with high oil contents presented higher levels of these genes than those with intermediate oil contents did, whereas tubers with low oil contents presented minimal gene expression. Notably, a large fragment of the FA biosynthesis rate-limiting enzyme-encoding gene BCCP1 was missing from the C. rotundus transcript, which might be responsible for blocking FA biosynthesis in its tubers. WGCNA pinpointed a gene module linked to tuber oil accumulation, with a coexpression network involving the transcription factors WRI1, MYB4, and bHLH68. The ethylene-related genes in this module suggest a role for ethylene signaling in oil accumulation, which is supported by the finding that ethylene (ETH) treatment increases the oil content in C. esculentus tubers. This study identified potential genes and networks associated with tuber oil accumulation in C. esculentus, highlighting the role of specific genes, transcription factors, and ethylene signaling in this process., 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 B.V.)
- Published
- 2024
- Full Text
- View/download PDF
15. [A case of Kawasaki disease complicated with gallbladder perforation].
- Author
-
Xu ZF, Wu XL, Chen K, Jin F, Gao LC, and Wang YS
- Published
- 2024
- Full Text
- View/download PDF
16. Copper-catalyzed deborodeuteration of arylboronic acids/borates using D 2 O as the deuterium source.
- Author
-
Yang M, Chen T, Xu ZF, Yu M, and Li CY
- Abstract
A straightforward copper-catalyzed deborodeuteration of arylboronic acids and borates was achieved, employing the cost-effective deuterium source D
2 O. This protocol demonstrates wide substrate applicability, exceptional deuterium incorporation efficiency, and favorable tolerance for various functional groups. Therefore, this approach offers a mild option for further applications in valuable deuterium molecule synthesis.- Published
- 2024
- Full Text
- View/download PDF
17. Responses of plant carbon, nitrogen, and phosphorus content in terrestrial ecosystems to warming: A Meta-analysis.
- Author
-
Huang LL, Zhou HL, Wang QF, Zhao XR, Chen JH, You CM, Xu L, Tan B, Xu ZF, and Xu HW
- Subjects
- Global Warming, Plants metabolism, Poaceae growth & development, Poaceae metabolism, Trees growth & development, Trees metabolism, Forests, Grassland, Phosphorus analysis, Phosphorus metabolism, Nitrogen analysis, Nitrogen metabolism, Carbon analysis, Carbon metabolism, Ecosystem
- Abstract
We conducted a Meta-analysis with 264 datasets from 55 publications to investigate the effects of warming duration and intensity on plant carbon, nitrogen and phosphorus contents. The results showed that warming significantly reduced shoot carbon (effect value of -1.7%), root carbon (-4.0%), litter carbon (-3.7%), shoot nitrogen (-7.0%) and litter nitrogen contents (-6.4%). For different ecosystem types, warming significantly decreased shoot carbon (-0.8%), shoot nitrogen (-5.9%), root carbon (-7.4%), litter carbon (-2.1%), and litter nitrogen content (-13.4%) in grasslands, while significantly increased shoot carbon (2.7%) in scrublands and litter phosphorus content (42.4%) in forests. Short-term warming (<5 years) decreased shoot carbon (-0.4%), shoot phosphorus (-0.4%) and litter nitrogen (-13.4%) contents, while medium- to long-term warming (5-10 years) increased shoot carbon (0.6%), shoot phosphorus (20.2%) and litter nitrogen (6.2%) contents. The 0-2 ℃ warming intensity increased shoot phosphorus (10.1%) and root phosphorus (27.4%) contents of plants, while the >2 ℃ warming intensity decreased shoot phosphorus (-3.7%) and root phosphorus (-6.5%) content. The effect values of plant shoot carbon and shoot nitrogen were significantly and positively correlated with humidity index. Warming showed negative effects on plant carbon, nitrogen and phosphorus contents in terrestrial ecosystems, and such effects were moderated by the duration and intensity of warming.
- Published
- 2024
- Full Text
- View/download PDF
18. The stoichiometric characteristics of carbon, nitrogen, and phosphorus in soil aggregates of Cryptomeria japonica plantation with stand ages in the Rainy Area of Western China.
- Author
-
Wu AM, Hong ZW, You CM, Xu L, Xu HW, Xu ZF, Luo ZT, and Tan B
- Subjects
- China, Rain chemistry, Particle Size, Time Factors, Phosphorus analysis, Phosphorus chemistry, Soil chemistry, Carbon analysis, Nitrogen analysis, Cryptomeria growth & development, Cryptomeria chemistry
- Abstract
Understanding the variations in soil aggregate composition, as well as the contents and stoichiometry of organic carbon (C), total nitrogen (N) and total phosphorus (P), in the surface layer of Cryptomeria japonica plantations with different stand ages can provide a theoretical basis for the optimized management of plantations and the improvement of soil fertility in the Rainy Area of West China. With the dry-sieving method, we measured the contents of soil aggregates with different sizes in the 0-15 and 15-30 cm soil layers across C. japonica plantations with five distinct developmental stages at Hongya Forestry Farm, Sichuan Province, including young stands (7 years old), middle-aged stands (13 years old), nearly mature stands (24 years old), mature stands (33 years old), and over-mature stands (53 years old). We further analyzed the C, N and P contents and ecological stoichiometric characteristics of soil aggregates. The results showed that the particle size composition of soil aggregates in C. japonica plantations varied among stand ages. The nearly mature and mature stands had higher proportion of large aggregates (0.5-1 and 1-2 mm), whereas the nearly mature stand had a lower proportion of micro-aggregates (0.053-0.25 mm) and the silt-plus-clay fraction (<0.053 mm). Moreover, the C, N and P contents and stoichiometric ratios in soil aggregate showed a unimodal pattern, which increased initially and then decreased with stand age, with peak values in the nearly mature and mature plantations. Furthermore, the C, N and P contents in aggregates in 0-15 cm soil layer were higher than that in the 15-30 cm soil layer. The highest C and N contents were found in the aggregates with particle sizes of 0.5-1 and 0.25-0.5 mm. In conclusion, the near-mature and mature stands of C. japonica plantations have higher nutrient content in soil aggregate, underscoring these stages was critical for maintaining soil fertility and advancing sustainable management practices.
- Published
- 2024
- Full Text
- View/download PDF
19. Cadherin-18 loss in prospermatogonia and spermatogonial stem cells enhances cell adhesion through a compensatory mechanism.
- Author
-
Li XX, Zhang DC, Wang Y, Wen J, Wang XJ, Cao YL, Jiang R, Li JR, Li YN, Liu HH, Xie WH, Xu ZF, Hu P, and Zou K
- Subjects
- Animals, Male, Swine, Mice, Mice, Knockout, Spermatogonia metabolism, Spermatogonia physiology, Testis metabolism, Testis physiology, Adult Germline Stem Cells metabolism, Adult Germline Stem Cells physiology, Gene Expression Regulation, Stem Cells physiology, Stem Cells metabolism, Cell Adhesion physiology, Cadherins metabolism, Cadherins genetics
- Abstract
Extracellular membrane proteins are crucial for mediating cell attachment, recognition, and signal transduction in the testicular microenvironment, particularly germline stem cells. Cadherin 18 (CDH18), a type II classical cadherin, is primarily expressed in the nervous and reproductive systems. Here, we investigated the expression of CDH18 in neonatal porcine prospermatogonia (ProSGs) and murine spermatogonial stem cells (SSCs). Disruption of CDH18 expression did not adversely affect cell morphology, proliferation, self-renewal, or differentiation in cultured porcine ProSGs, but enhanced cell adhesion and prolonged cell maintenance. Transcriptomic analysis indicated that the down-regulation of CDH18 in ProSGs significantly up-regulated genes and signaling pathways associated with cell adhesion. To further elucidate the function of CDH18 in germ cells, Cdh18 knockout mice were generated, which exhibited normal testicular morphology, histology, and spermatogenesis. Transcriptomic analysis showed increased expression of genes associated with adhesion, consistent with the observations in porcine ProSGs. The interaction of CDH18 with β-catenin and JAK2 in both porcine ProSGs and murine SSCs suggested an inhibitory effect on the canonical Wnt and JAK-STAT signaling pathways during CDH18 deficiency. Collectively, these findings highlight the crucial role of CDH18 in regulating cell adhesion in porcine ProSGs and mouse SSCs. Understanding this regulatory mechanism provides significant insights into the testicular niche.
- Published
- 2024
- Full Text
- View/download PDF
20. A retrospective study of prognostic factors and treatment outcome in advanced-stage Mycosis Fungoides and Sezary Syndrome.
- Author
-
Xu ZF, Chen H, Liu Y, Zhang W, Jin H, and Liu J
- Subjects
- Humans, Retrospective Studies, Female, Male, Middle Aged, Prognosis, Aged, Adult, Treatment Outcome, Neoplasm Staging, Skin Neoplasms pathology, Skin Neoplasms therapy, Skin Neoplasms mortality, Skin Neoplasms drug therapy, Skin Neoplasms diagnosis, Aged, 80 and over, Sezary Syndrome therapy, Sezary Syndrome mortality, Sezary Syndrome pathology, Mycosis Fungoides therapy, Mycosis Fungoides mortality, Mycosis Fungoides pathology, Mycosis Fungoides diagnosis
- Abstract
Background : Mycosis fungoides (MF) and Sezary Syndrome (SS) comprise over half of all Cutaneous T-cell lymphoma diagnoses. Current risk stratification is largely based on TNMB staging, few research investigated the prognostic value of clinical exams. Current systemic therapy for advanced disease includes immunomodulatory drugs, chemotherapy, and HADC inhibitors. Few clinical trials or retrospective research compared the efficacy of different drugs. Method : Here, we performed a retrospective analysis of prognostic factors and treatment outcomes of 92 patients diagnosed with MF/SS at the Peking Union Medical College Hospital from 2013-2023. Results : Cox regression analysis identified that age ≥ 50 years, WBC ≥ 8 × 10
9 /L, serum LDH ≥ 250U/L, β2-MG ≥ 4.50 mg/L, and stage IV were associated with reduced overall survival, age ≥ 50 years, serum LDH ≥ 250U/L and stage IV were associated with reduced progression free survival. Kaplan-Meier analysis established that immunomodulatory therapy was associated with longer progression free survival. Conclusion : These results suggested new factors in predicting prognosis and selecting appropriate treatments in patients with advanced MF/SS.- Published
- 2024
- Full Text
- View/download PDF
21. Rhodium-catalyzed intramolecular cyclization for synthesizing thiodihydropyrans.
- Author
-
Wang Y, Xu ZF, Chen J, Yu M, Guo SR, and Li CY
- Abstract
Addressing the challenge of constructing multi-substituted dihydropyrans, we present an efficient synthesis method for oxygen-containing heterocycles. Using thiones and metal carbenes, we employed xanthate and triazole to intramolecularly synthesize dihydropyran or dihydrofuran compounds. 1,2-Hydride migration was inhibited, and thiodihydropyrans were obtained in excellent yields. A mechanism proceeding through a Rh-carbene intermediate is proposed for the multi-substituted dihydropyrans synthesis.
- Published
- 2024
- Full Text
- View/download PDF
22. Fe-TiO 2-x /TiO 2 S-scheme homojunction for efficient photocatalytic CO 2 reduction.
- Author
-
Jing YN, Yin XL, Li LL, Wang YL, Xue J, Xu ZF, Liu DQ, Chen CW, Liu XJ, and Liu EK
- Abstract
CO
2 -to-high value-added chemicals via a photocatalytic route is of interest but strangled by the low efficiency. Herein, a novel Fe-TiO2-x /TiO2 S-scheme homojunction was designed and constructed by using a facile surface modification approach whereby oxygen vacancy (OV) and Fe introducing on the TiO2 nanorod surface. The as-synthesized Fe-TiO2-x /TiO2 S-scheme homojunction exhibits positive properties on promoting photocatalytic CO2 reduction: i) the nanorod structure provides numerous active sites and a radical charge transfer path; ii) the doped Fe and OV not only synergistically enhance light utilization but also promote CO2 adsorption; iii) the Fe-TiO2-x /TiO2 S-scheme homojunction benefits photoexcited charge separation and retains stronger redox capacity. Thanks to those good characters, the Fe-TiO2-x /TiO2 homojunction exhibits superior CO2 reduction performances with optimized CO/CH4 generation rates of 122/22 μmol g-1 h-1 which exceed those of pure TiO2 by more than 9.4/7.3 folds and most currently reported catalytic systems. This manuscript develops a facile and universal approach to synthesize well-defined homojunction and may inspire the construction of other more high-efficiency photocatalysts toward CO2 reduction and beyond., 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
23. Aerobic Oxysulfonylation of Olefins Using N -Sulfonylaminophthalimides as Sulfonyl Radical Precursors.
- Author
-
Yan Z, Ye J, Wang H, Chen T, Xu ZF, Yu M, and Li CY
- Abstract
Readily accessible N -sulfonylaminophthalimides were developed to be efficient sulfonyl radical precursors upon being treated with a base/oxidant under mild conditions. The method was applied to the oxysulfonylation of olefins, providing β-ketosulfones and isobenzofurans stereoselectively. On the basis of control experiments, density functional theory calculations, and the literature, a plausible radical mechanism was proposed. The findings offered a chance to develop novel radical precursors based on diversely substituted N -aminophthalimides, which might establish a universal mild approach for the generation of various radicals.
- Published
- 2024
- Full Text
- View/download PDF
24. [Clinical characteristics and prognosis of patients with myelodysplastic syndrome with a bone marrow nucleated erythroid cell proportion of greater than or equal to 50].
- Author
-
Zeng YP, Li B, Qin TJ, Xu ZF, Qu SJ, Pan LJ, Gao QY, Jiao M, Wu JY, Wang HJ, Li CW, Ja YJ, Sun Q, and Xiao ZJ
- Subjects
- Humans, Prognosis, Retrospective Studies, Bone Marrow pathology, Bone Marrow Cells, Male, Female, Survival Rate, Tumor Suppressor Protein p53 genetics, Middle Aged, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes diagnosis, Mutation
- Abstract
Objective: To analyze the clinical characteristics and prognosis of patients with myelodysplastic syndrome (MDS) with a bone marrow nucleated erythroid cell proportion of greater than or equal to 50% (MDS-E) . Methods: The clinical characteristics and prognostic factors of patients with MDS-E were retrospectively analyzed by collecting the case data of 1 436 newly treated patients with MDS diagnosed in the Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences from May 2014 to June 2023. Results: A total of 1 436 newly diagnosed patients with complete data were included in the study, of which 337 (23.5%) patients with MDS-E had a younger age of onset and lower neutrophil and platelet counts compared with those in patients with an erythroid cell proportion of less than 50% (MDS-NE) (all P <0.05). The proportion of MDS cases with ring sideroblasts (MDS-RS) was higher in the MDS-E group than in the MDS-NE group, and multi-hit TP53 mutations were more enriched in the MDS-E group than in the MDS-NE group (all P <0.05). Among patients with MDS-RS, the frequency of complex karyotypes and the TP53 mutation rate were significantly lower in the MDS-E group than in the MDS-NE group (0 vs 11.9%, P =0.048 and 2.4% vs 15.1%, P =0.053, respectively). Among patients with TP53 mutations, the frequencies of complex karyotypes and multi-hit TP53 mutations were significantly higher in the MDS-E group than in the MDS-NE group (87.5% vs 64.6%, P =0.003 and 84.0% vs 54.2%, P <0.001, respectively). Survival analysis of patients with MDS-RS found that the overall survival (OS) in the MDS-E group was better than that in the MDS-NE group [not reached vs 63 (95% CI 53.3-72.7) months, P =0.029]. Among patients with TP53 mutations and excess blasts, the OS in the MDS-E group was worse than that in the MDS-NE group [6 (95% CI 2.2-9.8) months vs 12 (95% CI 8.9-15.1) months, P =0.022]. Multivariate analysis showed that age of ≥65 years ( HR =2.47, 95% CI 1.43-4.26, P =0.001), mean corpuscular volume (MCV) of ≤100 fl ( HR =2.62, 95% CI 1.54-4.47, P <0.001), and TP53 mutation ( HR =2.31, 95% CI 1.29-4.12, P =0.005) were poor prognostic factors independent of the Revised International Prognostic Scoring System (IPSS-R) prognosis stratification in patients with MDS-E. Conclusion: Among patients with MDS-RS, MDS-E was strongly associated with a lower proportion of complex karyotypes and TP53 mutations, and the OS in the MDS-E group was longer than that in the MDS-NE group. Among patients with TP53 mutations, MDS-E was strongly associated with complex karyotypes and multi-hit TP53 mutations, and among TP53-mutated patients with excess blasts, the OS in the MDS-E group was shorter than that in the MDS-NE group. Age of ≥65 years, MCV of ≤100 fl, and TP53 mutation were independent adverse prognostic factors affecting OS in patients with MDS-E.
- Published
- 2024
- Full Text
- View/download PDF
25. Copper-Catalyzed Synthesis of Furan-Tethered Benzocyclobutenes via Carbene-Mediated 1,4-Sulfinate Migration-Annulation.
- Author
-
Zhang W, Li Z, Hu H, Wang J, Xu ZF, Yu M, and Li CY
- Abstract
A copper-catalyzed intramolecular cascade reaction of conjugated enynones has been achieved via a pivotal 1,4-sulfinate migration step. This process leverages a cost-effective and ecofriendly copper salt as catalyst, enabling the efficient construction of five- and four-membered rings in a rapid, sequential manner, producing furan-tethered benzocyclobutenes in good to excellent yields under mild conditions. The reaction is characterized by 100% atom economy, outstanding efficiency, and excellent diastereoselectivity in the cases studied. The robustness of this method is evidenced by its compatibility with air exposure and the use of undistilled, commercially available solvents, further enhancing its practicality.
- Published
- 2024
- Full Text
- View/download PDF
26. Reactive oxygen species act as the key signaling molecules mediating light-induced anthocyanin biosynthesis in Eucalyptus.
- Author
-
Zhu L, Liao Y, Zhang T, Zeng Z, Wang J, Duan L, Chen X, Lin K, Liang X, Han Z, Huang Y, Wu W, Hu H, Xu ZF, and Ni J
- Subjects
- Signal Transduction, Gene Expression Regulation, Plant, Plant Leaves metabolism, Eucalyptus metabolism, Eucalyptus genetics, Anthocyanins biosynthesis, Anthocyanins metabolism, Reactive Oxygen Species metabolism, Light
- Abstract
Light plays a pivotal role in regulating anthocyanin biosynthesis in plants, and the early light-responsive signals that initiate anthocyanin biosynthesis remain to be elucidated. In this study, we showed that the anthocyanin biosynthesis in Eucalyptus is hypersensitive to increased light intensity. The combined transcriptomic and metabolomic analyses were conducted on Eucalyptus leaves after moderate (ML; 100 μmol m
-2 s-1 ) and high (HL; 300 μmol m-2 s-1 ) light intensity treatments. The results identified 1940, 1096, 1173, and 2756 differentially expressed genes at 6, 12, 24, and 36 h after HL treatment, respectively. The metabolomic results revealed the primary anthocyanin types, and other differentially accumulated flavonoids and phenylpropane intermediates that were produced in response to HL, which well aligned with the transcriptome results. Moreover, biochemical analysis showed that HL inhibited peroxidase activity and increased the ROS level in Eucalyptus leaves. ROS depletion through co-application of the antioxidants rutin, uric acid, and melatonin significantly reduced, and even abolished, anthocyanin biosynthesis induced by HL treatment. Additionally, exogenous application of hydrogen peroxide efficiently induced anthocyanin biosynthesis within 24 h, even under ML conditions, suggesting that ROS played a major role in activating anthocyanin biosynthesis. A HL-responsive MYB transcription factor EgrMYB113 was identified to play an important role in regulating anthocyanin biosynthesis by targeting multiple anthocyanin biosynthesis genes. Additionally, the results demonstrated that gibberellic acid and sugar signaling contributed to HL-induced anthocyanin biosynthesis. Conclusively, these results suggested that HL triggers multiple signaling pathways to induce anthocyanin biosynthesis, with ROS acting as indispensable mediators in Eucalyptus., 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 Masson SAS. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
27. Inhibition of flowering by gibberellins in the woody plant Jatropha curcas is restored by overexpression of JcFT.
- Author
-
Huang P, Yang J, Ke J, Cai L, Hu Y, Ni J, Li C, Xu ZF, and Tang M
- Subjects
- Gene Expression Regulation, Plant, Plants, Genetically Modified genetics, Seeds genetics, Seeds growth & development, Seeds metabolism, Gibberellins metabolism, Flowers genetics, Flowers growth & development, Flowers metabolism, Jatropha genetics, Jatropha metabolism, Jatropha growth & development, Jatropha physiology, Plant Proteins genetics, Plant Proteins metabolism
- Abstract
Jatropha curcas (J. curcas) is a perennial oil-seed plant with vigorous vegetative growth but relatively poor reproductive growth and low seed yield. Gibberellins (GAs) promotes flowering in most annual plants but inhibits flowering in many woody plants, including J. curcas. However, the underlying mechanisms of GA inhibits flowering in perennial woody plants remain unclear. Here, we found that overexpression of the GA biosynthesis gene JcGA20ox1 inhibits flowering in J. curcas and in J. curcas × J. integerrima hybrids. Consistent with this finding, overexpression of the GA catabolic gene JcGA2ox6 promotes flowering in J. curcas. qRTPCR revealed that inhibits floral transition by overexpressing JcGA20ox1 resulted from a decrease in the expression of JcFT and other flowering-related genes, which was restored by overexpressing JcFT in J. curcas. Overexpression of JcGA20ox1 or JcGA2ox6 reduced seed yield, but overexpression of JcFT significantly increased seed yield. Furthermore, hybridization experiments showed that the reduction in seed yield caused by overexpression of JcGA20ox1 or JcGA2ox6 was partially restored by the overexpression of JcFT. In addition, JcGA20ox1, JcGA2ox6 and JcFT were also found to be involved in the regulation of seed oil content and endosperm development. In conclusion, our study revealed that the inhibitory effect of GA on flowering is mediated through JcFT and demonstrated the effects of JcGA20ox1, JcGA2ox6 and JcFT on agronomic traits in J. curcas. This study also indicates the potential value of GA metabolism genes and JcFT in the breeding of new varieties of woody oil-seed plants., Competing Interests: Declaration of Competing Interest The authors declare that they have no competing financial interests., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
28. Research progress of acupuncture and moxibustion for the enhanced synergism of chemotherapy.
- Author
-
Yang YZ, Li SS, Guo Y, Huang J, Wang JQ, Feng YT, Zhao SH, Zhao WJ, and Xu ZF
- Subjects
- Humans, Animals, Combined Modality Therapy, Moxibustion, Acupuncture Therapy, Neoplasms therapy, Neoplasms drug therapy, Antineoplastic Agents
- Abstract
The application of acupuncture and moxibustion in alleviating the adverse effects of chemotherapy drugs has been widely recognized at home and abroad, but the studies have been rarely summarized for the enhanced anti-tumor effect and its mechanism of acupuncture and moxibustion to synergize the chemotherapy drugs. This paper reviewed the clinical and basic studies on the synergism of chemotherapy with acupuncture and moxibustion in recent years. It was found that chemotherapy synergized with acupuncture and moxibustion can suppress cancer to a certain extent and improve the quality of life in patients. The effect mechanism of acupuncture and moxibustion combined with chemotherapy drugs is related to promoting tumor cell apoptosis, improving the immune and vascular microenvironment, and advancing chemotherapy drug enrichment on the affected area. It provides the evidences and ideas for enhancing the effect of chemotherapy by delivering acupuncture and moxibustion as an adjuvant therapy.
- Published
- 2024
- Full Text
- View/download PDF
29. Discriminating atypical parotid carcinoma and pleomorphic adenoma utilizing extracellular volume fraction and arterial enhancement fraction derived from contrast-enhanced CT imaging: A multicenter study.
- Author
-
Xu ZY, Huang LW, Yang YJ, Cai ZP, Chen ML, Lu RL, Ouyang YX, Hong ZK, Huang WJ, and Xu ZF
- Subjects
- Humans, Male, Female, Middle Aged, Diagnosis, Differential, Aged, Adult, ROC Curve, Retrospective Studies, Adenocarcinoma diagnostic imaging, Adenocarcinoma pathology, Adenoma, Pleomorphic diagnostic imaging, Adenoma, Pleomorphic pathology, Parotid Neoplasms diagnostic imaging, Parotid Neoplasms pathology, Tomography, X-Ray Computed methods, Contrast Media
- Abstract
Objectives: To investigate the added value of extracellular volume fraction (ECV) and arterial enhancement fraction (AEF) derived from enhanced CT to conventional image and clinical features for differentiating between pleomorphic adenoma (PA) and atypical parotid adenocarcinoma (PCA) pre-operation., Methods: From January 2010 to October 2023, a total of 187 cases of parotid tumors were recruited, and divided into training cohort (102 PAs and 51 PCAs) and testing cohort (24 PAs and 10 atypical PCAs). Clinical and CT image features of tumor were assessed. Both enhanced CT-derived ECV and AEF were calculated. Univariate analysis identified variables with statistically significant differences between the two subgroups in the training cohort. Multivariate logistic regression analysis with the forward variable selection method was used to build four models (clinical model, clinical model+ECV, clinical model+AEF, and combined model). Diagnostic performances were evaluated using receiver operating characteristic (ROC) curve analyses. Delong's test compared model differences, and calibration curve and decision curve analysis (DCA) assessed calibration and clinical application., Results: Age and boundary were chosen to build clinical model, and to construct its ROC curve. Amalgamating the clinical model, ECV, and AEF to establish a combined model demonstrated superior diagnostic effectiveness compared to the clinical model in both the training and test cohorts (AUC = 0.888, 0.867). There was a significant statistical difference between the combined model and the clinical model in the training cohort (p = 0.0145)., Conclusions: ECV and AEF are helpful in differentiating PA and atypical PCA, and integrating clinical and CT image features can further improve the diagnostic performance., (© 2024 The Author(s). Cancer Medicine published by John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
30. Cast versus Kirschner wire fixation in type II paediatric phalangeal neck fractures.
- Author
-
Zhi XW, Luo KT, Tan YY, Wu HM, Zhou Y, Xu ZF, Wang JQ, Li YQ, Xu HW, Canavese F, and Zeng C
- Subjects
- Humans, Child, Male, Female, Adolescent, Fracture Fixation, Internal methods, Fracture Fixation, Internal instrumentation, Fracture Fixation, Internal adverse effects, Treatment Outcome, Fractures, Bone surgery, Range of Motion, Articular, Child, Preschool, Bone Wires, Finger Phalanges injuries, Finger Phalanges surgery, Casts, Surgical
- Abstract
Purpose: To compare the outcomes of type II pediatric phalangeal neck fractures (PPNFs) treated with closed reduction and cast immobilization (CRCI) versus closed reduction percutaneous pinning (CRPP), and evaluated the clinical efficacy of conservative versus surgical treatment of type II PPNFs via meta-analysis., Methods: Patients aged ≤ 14 years with type II PPNFs were divided into conservative (CRCI) and operative (CRPP) groups. Radiographs measured angulation and translation; hand function was assessed with total active range of motion (TAM) and Quick-DASH. Complication rates were also compared between the groups. A meta-analysis of conservative versus operative treatment confirmed the clinical results. Statistical analysis was performed using SPSS 26.0 and R studio 3.0 with two-tailed, chi-squared, and Mann-Whitney U or t-tests, P < 0.05. Meta-analysis used fixed or random effects models, calculating mean differences and odds ratios for outcomes, and assessing heterogeneity with I
2 and Q tests., Results: Final angulation (3.4° ± 3.7° and 4.9° ± 5.4° vs. 3.6° ± 3.7° and 4.2° ± 4.3°) and displacement (6.3% ± 5.8% and 5.7% ± 4.7% vs. 5.8% ± 5.5% and 3.2% ± 4.2%) in the coronal and sagittal planes were not different statistically between the conservative and surgical groups (P > 0.05), but improved significantly compared to preoperative values (P < 0.05). Although Quick-DASH scores were comparable in both groups (P = 0.105), conservatively treated patients had a significantly better TAM at the last follow-up visit (P = 0.005). The complication rates were 24.2% and 41.7% in the surgical and conservatively treated groups respectively (P = 0.162). However, the latter primarily experienced imaging-related complications, whereas the former experienced functional complications (P = 0.046). Our meta-analysis (n = 181 patients) also showed comparable functional (P = 0.49) and radiographic (P = 0.59) outcomes and complication rates (P = 0.21) between the surgical (94 patients) and conservative (87 patients) groups., Conclusions: Conservative and surgical treatments are both reliable and safe approaches for managing type II PPNF in children. However, conservatively treated patients generally experience similar radiographic outcomes, lower complication rates, and better functional outcomes than surgically treated ones., (© 2024. The Author(s) under exclusive licence to SICOT aisbl.)- Published
- 2024
- Full Text
- View/download PDF
31. Acupuncture alleviates inflammatory pain by activating CXCL1/CXCR2 signaling in the primary somatosensory cortex in adjuvant induced arthritis rats.
- Author
-
Li YW, Dou BM, Wang SJ, Lü ZX, Li W, Xu ZF, Liu YY, Xu Y, Fang YX, Guo YM, and Guo Y
- Subjects
- Animals, Humans, Male, Mice, Rats, Acupuncture Points, Inflammation therapy, Inflammation metabolism, Inflammation genetics, Mice, Inbred BALB C, Pain metabolism, Pain genetics, Pain Management, Rats, Wistar, Signal Transduction, Acupuncture Therapy, Arthritis, Experimental therapy, Arthritis, Experimental metabolism, Arthritis, Experimental genetics, Chemokine CXCL1 metabolism, Chemokine CXCL1 genetics, Receptors, Interleukin-8B metabolism, Receptors, Interleukin-8B genetics, Somatosensory Cortex metabolism
- Abstract
Objectives: To observe whether acupuncture up-regulates chemokine CXC ligand 1 (CXCL1) in the brain to play an analgesic role through CXCL1/chemokine CXC receptor 2 (CXCR2) signaling in adjuvant induced arthritis (AIA) rats, so as to reveal its neuro-immunological mechanism underlying improvement of AIA., Methods: BALB/c mice with relatively stable thermal pain reaction were subjected to planta injection of complete Freund adjuvant (CFA) for establishing AIA model, followed by dividing the AIA mice into simple AF750 (fluorochrome) and AF750+CXCL1 groups ( n =2 in each group). AF750 labeled CXCL1 recombinant protein was then injected into the mouse's tail vein to induce elevation of CXCL1 level in blood for simulating the effect of acupuncture stimulation which has been demonstrated by our past study. In vivo small animal imaging technology was used to observe the AF750 and AF750+CXCL1-labelled target regions. After thermal pain screening, the Wistar rats with stable pain reaction were subjected to AIA modeling by injecting CFA into the rat's right planta, then were randomized into model and manual acupuncture groups ( n =12 in each group). Other 12 rats that received planta injection of saline were used as the control group. Manual acupuncture (uniform reinforcing and reducing manipulations) was applied to bilateral "Zusanli" (ST36) for 4×2 min, with an interval of 5 min between every 2 min, once daily for 7 days. The thermal pain threshold was assessed by detecting the paw withdrawal latency (PWL) using a thermal pain detector. The contents of CXCL1 in the primary somatosensory cortex (S1), medial prefrontal cortex, nucleus accumbens, amygdala, periaqueductal gray and rostroventromedial medulla regions were assayed by using ELISA, and the expression levels of CXCL1, CXCR2 and mu-opioid receptor (MOR) mRNA in the S1 region were detected using real time-quantitative polymerase chain reaction. The immune-fluorescence positive cellular rate of CXCL1 and CXCR2 in S1 region was observed after immunofluorescence stain. The immunofluorescence double-stain of CXCR2 and astrocyte marker glial fibrillary acidic protein (GFAP) or neuron marker NeuN or MOR was used to determine whether there is a co-expression between them., Results: In AIA mice, results of in vivo experiments showed no obvious enrichment signal of AF750 or AF750+CXCL1 in any organ of the body, while in vitro experiments showed that there was a stronger fluorescence signal of CXCL1 recombinant protein in the brain. In rats, compared with the control group, the PWL from day 0 to day 7 was significantly decreased ( P <0.01) and the expression of CXCR2 mRNA in the S1 region significantly increased in the model group ( P <0.05), while in comparison with the model group, the PWL from day 2 to day 7, CXCL1 content, CXCR2 mRNA expression and CXCR2 content, and MOR mRNA expression in the S1 region were significantly increased in the manual acupuncture group ( P <0.05, P <0.01). Immunofluorescence stain showed that CXCR2 co-stained with NeuN and MOR in the S1 region, indicating that CXCR2 exists in neurons and MOR-positive neurons but not in GFAP positive astrocytes., Conclusions: Acupuncture can increase the content of CXCL1 in S1 region, up-regulate CXCR2 on neurons in the S1 region and improve MOR expression in S1 region of AIA rats, which may contribute to its effect in alleviating inflammatory pain.
- Published
- 2024
- Full Text
- View/download PDF
32. Mobilizing endogenous neuroprotection: the mechanism of the protective effect of acupuncture on the brain after stroke.
- Author
-
Fu TC, Wang GR, Li YX, Xu ZF, Wang C, Zhang RC, Ma QT, Ma YJ, Guo Y, Dai XY, and Guo Y
- Abstract
Given its high morbidity, disability, and mortality rates, ischemic stroke (IS) is a severe disease posing a substantial public health threat. Although early thrombolytic therapy is effective in IS treatment, the limited time frame for its administration presents a formidable challenge. Upon occurrence, IS triggers an ischemic cascade response, inducing the brain to generate endogenous protective mechanisms against excitotoxicity and inflammation, among other pathological processes. Stroke patients often experience limited recovery stages. As a result, activating their innate self-protective capacity [endogenous brain protection (EBP)] is essential for neurological function recovery. Acupuncture has exhibited clinical efficacy in cerebral ischemic stroke (CIS) treatment by promoting the human body's self-preservation and "Zheng Qi" (a term in traditional Chinese medicine (TCM) describing positive capabilities such as self-immunity, self-recovery, and disease prevention). According to research, acupuncture can modulate astrocyte activity, decrease oxidative stress (OS), and protect neurons by inhibiting excitotoxicity, inflammation, and apoptosis via activating endogenous protective mechanisms within the brain. Furthermore, acupuncture was found to modulate microglia transformation, thereby reducing inflammation and autoimmune responses, as well as promoting blood flow restoration by regulating the vasculature or the blood-brain barrier (BBB). However, the precise mechanism underlying these processes remains unclear. Consequently, this review aims to shed light on the potential acupuncture-induced endogenous neuroprotective mechanisms by critically examining experimental evidence on the preventive and therapeutic effects exerted by acupuncture on CIS. This review offers a theoretical foundation for acupuncture-based stroke treatment., 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 Fu, Wang, Li, Xu, Wang, Zhang, Ma, Ma, Guo, Dai and Guo.)
- Published
- 2024
- Full Text
- View/download PDF
33. Xanthine oxidase inhibitory constituents from the roots of Ampelopsis japonica .
- Author
-
Li YL, Liu F, Zhao LY, Li HX, Jumai A, Xu ZF, and Qiu SX
- Abstract
Bioassay-guided purification of the xanthine oxidase (XOD) inhibitory extract of the roots of Ampelopsis japonica resulted in the isolation of two new triterpenoids ( 1-2 ), designated Ampejaponoside A and B, along with sixteen known compounds ( 3-18 ). The structures of Ampejaposide A and B were elucidated by comprehensive analysis of spectroscopic data with the structures of the known compounds 3-18 confirmed by comparison the spectral data with corresponding values reported in literatures. All the isolates were evaluated for their XOD inhibitory activity in vitro . As a result, compounds 2 , 8 , and 14-16 displayed significant XOD inhibitory effect, particularly 16 being the most potent with an IC
50 value of 0.21 μ M, superior to positive substance allopurinol (IC50 1.95 μ M). Molecular docking uncovered a unique interaction mode of 16 with the active site of XOD. The current study showed that the triterpenoids and polyphenols from A. japonica could serve as new lead compounds with the potential to speed up the development of novel XOD inhibitors with clinical potential to treat hyperuricaemia and gout.- Published
- 2024
- Full Text
- View/download PDF
34. Characteristics and prognostic value of gut microbiota in follicular lymphoma.
- Author
-
Xu ZF, Zhao D, Wei C, Wang W, Zhang Y, Zhang W, and Zhou D
- Abstract
The pathogenesis and progression of follicular lymphoma (FL) depends on immune evasion mechanisms. The gut microbiota has been reported to be associated with the development and outcome of several human diseases by modulating host immunity. Thus, the present study investigated the characteristics and prognostic value of the gut microbiota in FL. Fecal samples from treatment-naïve patients with FL (n=28) and healthy controls (n=18) were prospectively collected. The gut microbiota diversity and composition were examined by 16S ribosomal RNA sequencing. The results demonstrated that patients with FL had distinct microbiota compositions. The relative abundance of the Ruminococcaceae family was significantly increased in patients with FL (P=0.01). Furthermore, a high level of Ruminococcus was identified as a strong indicator of tumor burden (P=0.001), and was related to the FL International Prognostic Index score and serum lactate dehydrogenase levels. The present results indicated an association between the gut microbiota and FL prognosis. Findings from the present study may provide a rational foundation for further investigation of the role of gut microbiota in lymphoma management., Competing Interests: The authors declare that they have no competing interests., (Copyright: © 2024 Xu et al.)
- Published
- 2024
- Full Text
- View/download PDF
35. Utility, benefits, and risks of newborn genetic screening carrier reports for families.
- Author
-
Wang X, Sun Y, Zhao JY, Guan XW, Wang YY, Hong DY, Zhang ZL, Li YH, Yang PY, Jiang T, and Xu ZF
- Subjects
- Humans, Infant, Newborn, Female, Adult, Anxiety, Surveys and Questionnaires, Parents, Neonatal Screening methods, Genetic Testing methods
- Abstract
Background: Newborn genetic screening (NBGS) based on next-generation sequencing offers enhanced disease detection and better detection rates than traditional newborn screening. However, challenges remain, especially around reporting the NBGS carrier results. Therefore, we aimed to investigate the NBGS carrier parents' views on NBGS and NBGS reports in China., Methods: We distributed a survey querying demographic information, knowledge and perceptions of NBGS, the impact of NBGS on a total of 2930 parents, and their decision-making to parents of newborns reported as carriers in NBGS in Nanjing, China in 2022., Results: The average age of the survey respondents was 30.7 years (standard deviation = 3.6). Most (68.38%) felt informed about NBGS, especially women, the highly educated, and high earners. Nearly all (98.74%) saw NBGS as crucial for early disease detection, with 73.18% believing it positively impacts their future. However, 19.16% felt it might cause anxiety, especially among the less educated. Concerns included potential discrimination due to exposed genetic data and strained family ties. Many suggested NBGS coverage by medical insurance to ease financial burdens., Conclusions: Through our study, we gained insights into parents' perspectives and concerns regarding the NBGS carrier result reporting, thus providing relevant information for further refinement and clinical promotion of the NBGS project., Competing Interests: Disclosure of interest: The authors completed the ICMJE Disclosure of Interest Form (available upon request from the corresponding author) and disclose no relevant interests., (Copyright © 2024 by the Journal of Global Health. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
36. [Efficacy and safety analysis of venetoclax combined with hypomethylating agents for the treatment of higher-risk myelodysplastic syndromes in the real world].
- Author
-
Gao QY, Li B, Qu SQ, Pan LJ, Jiao M, Zhao JY, Xu ZF, Xiao ZJ, and Qin TJ
- Subjects
- Humans, Retrospective Studies, Prognosis, Bridged Bicyclo Compounds, Heterocyclic therapeutic use, Myelodysplastic Syndromes genetics, Sulfonamides
- Abstract
Objective: To investigate the efficacy and safety of combining venetoclax (VEN) with hypomethylated drugs (HMA) in the treatment of higher-risk (IPSS-R score >3.5) myelodysplastic syndromes (MDS) . Methods: From March 2021 to December 2022, forty-five MDS patients with intermediate and high risk were treated with VEN in combination with HMAs. Clinical data were collected and analyzed retrospectively, including gender, age, MDS subtype, IPSS-R score, treatment regimen, and efficacy, etc. Kaplan-Meier method and Cox regression model were used to analyze univariate and multivariate of survival prognosis. Results: ①Forty-five patients with MDS, including ninety-one percent were classified as high or very high risk. According to the 2023 consensus proposal for revised International Working Group response criteria for higher-risk MDS, the overall response rate (ORR) was 62.2% (28/45), with the complete response rate (CR) was 33.3% (15/45). For twenty-five naïve MDS, the ORR was 68% (17/25) and the CR rate was 32% (8/25). In nonfirst-line patients, the ORR and CR were 55% (11/20) and 35% (7/20) respectively. The median cycle to best response was 1 (1-4). ②With a median followup of 189 days, the median overall survival (OS) time was 499 (95% confidence interval, 287-711) days, and most patients died from disease progression. Responders had a significantly better median OS time than nonresponders (499 days vs 228 days, P <0.001). Multifactor analysis revealed that IPSS-R score and response to treatment were independent prognostic factors for OS; the presence of SETBP1 gene mutations was associated with a longer hospital stay (51.5 days vs 27 days, P =0.017) . Conclusions: There is clinical benefit of venetoclax in combination with hypomethylated agents in patients with higher-risk MDS, but adverse events such as severe hypocytopenia during treatment should be avoided.
- Published
- 2024
- Full Text
- View/download PDF
37. Cytokinin promotes anthocyanin biosynthesis via regulating sugar accumulation and MYB113 expression in Eucalyptus.
- Author
-
Zhu L, Liao Y, Lin K, Wu W, Duan L, Wang P, Xiao X, Zhang T, Chen X, Wang J, Ye K, Hu H, Xu ZF, and Ni J
- Subjects
- Anthocyanins metabolism, Sugars metabolism, Cytokinins metabolism, Flavonoids metabolism, Gene Expression Regulation, Plant, Plant Proteins genetics, Plant Proteins metabolism, Arabidopsis genetics, Eucalyptus genetics, Eucalyptus metabolism
- Abstract
Anthocyanins are flavonoid-like substances that play important roles in plants' adaptation to various environmental stresses. In this research, we discovered that cytokinin (CK) alone could effectively induce the anthocyanin biosynthesis in Eucalyptus and many other perennial woody plant species, but not in tobacco and Arabidopsis, suggesting a diverse role of CK in regulating anthocyanin biosynthesis in different species. Transcriptomic and metabolomic strategies were used to further clarify the specific role of CK in regulating anthocyanin biosynthesis in Eucalyptus. The results showed that 801 and 2241 genes were differentially regulated at 6 and 24 h, respectively, after CK treatment. Pathway analysis showed that most of the differentially expressed genes were categorized into pathways related to cellular metabolism or transport of metabolites, including amino acids and sugars. The metabolomic results well supported the transcriptome data, which showed that most of the differentially regulated metabolites were related to the metabolism of sugar, amino acids and flavonoids. Moreover, CK treatment significantly induced the accumulation of sucrose in the CK-treated leaves, while sugar starvation mimicked by either defoliation or shading treatment of the basal leaves significantly reduced the sugar increase of the CK-treated leaves and thus inhibited CK-induced anthocyanin biosynthesis. The results of in vitro experiment also suggested that CK-induced anthocyanin in Eucalyptus was sugar-dependent. Furthermore, we identified an early CK-responsive transcription factor MYB113 in Eucalyptus, the expression of which was significantly upregulated by CK treatment in Eucalyptus, but was inhibited in Arabidopsis. Importantly, the overexpression of EgrMYB113 in the Eucalyptus hairy roots was associated with significant anthocyanin accumulation and upregulation of most of the anthocyanin biosynthetic genes. In conclusion, our study demonstrates a key role of CK in the regulation of anthocyanin biosynthesis in Eucalyptus, providing a molecular basis for further understanding the regulatory mechanism and diversity of hormone-regulated anthocyanin biosynthesis in different plant species., (© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2024
- Full Text
- View/download PDF
38. Advances of research on mechanisms of acupuncture underlying improvement of ischemic stroke by regulating neuronal mitochondria.
- Author
-
Li YX, Zhang RC, Cheng AX, Ma QT, Fu TC, Wang GR, Xu ZF, and Guo Y
- Subjects
- Humans, Mitochondria genetics, Mitochondria metabolism, Neurons metabolism, Oxidative Stress, Ischemic Stroke metabolism, Acupuncture Therapy, Stroke genetics, Stroke therapy
- Abstract
Acupuncture has a positive effect in the treatment of ischemic stroke (IS). A number of studies have confirmed that the role of acupuncture in the treatment of IS, which is closely related to its functions of regulating mitochondrial functions. In the present article, we review the mechanisms of acupuncture underlying improvement of mitochondria in the treatment of IS from 4 aspects: 1) protecting mitochondrial structure integrity, 2) regulative effect on mitochondrial functional activities, including regulating energy metabolism, reducing oxidative stress, suppressing calcium overload, and regulating mitochondrial membrane potential changes, 3) regulating mitochondrial quality control system, including promoting mitochondrial biosynthesis, regulating mitochondrial dynamics and apoptosis, and 4) regula-ting mitochondria-related apoptosis pathways. All of these may provide a theoretical basis for acupuncture in the treatment of IS and a reference for further research.
- Published
- 2024
- Full Text
- View/download PDF
39. The Gut Microbiome Correlated to Chemotherapy Efficacy in Diffuse Large B-Cell Lymphoma Patients.
- Author
-
Xu ZF, Yuan L, Zhang Y, Zhang W, Wei C, Wang W, Zhao D, Zhou D, and Li J
- Abstract
The gut microbiome (GMB) has been extensively reported to be associated with the development and prognosis of human diseases. This study aims to investigate the relationship between GMB composition and chemotherapy efficacy in diffuse large B-cell lymphoma (DLBCL). We demonstrated that DLBCL patients at diagnosis have altered GMB compositions. Significant enrichment of the Proteobacteria phylum in DLBCL patients was observed. Gene analysis showed a high abundance of virulence factors genes. We found baseline GMB to be associated with clinical outcomes. The emergence of Lactobacillus fermentum was correlated with better treatment outcome. Our pilot results suggested a correlation between GMB composition and DLBCL development and prognosis. Clues from our study, together with previous research, provided a rational foundation for further investigation on the pathogenesis, prognosis value, and targeted therapy of GMB in DLBCL.
- Published
- 2024
- Full Text
- View/download PDF
40. EupDB: An integrative and comprehensive functional genomics data hub for Euphorbiaceae plants.
- Author
-
Liu J, Li Y, Li J, Chen W, Pan B, Liu A, Xu ZF, Xu W, and Liu C
- Subjects
- Genomics, Plants, Euphorbiaceae
- Published
- 2024
- Full Text
- View/download PDF
41. Ultrasound-guided microwave ablation versus surgery for solitary T1bN0M0 papillary thyroid carcinoma: a prospective multicenter study.
- Author
-
Guo MH, Dou JP, Zheng L, Liu FY, Yu J, Cheng ZG, Yu XL, Che Y, Wang SR, Cong ZB, Bai N, Liu C, Hao Y, Yu MA, Xu ZF, Han ZY, Liang P, and Chen L
- Subjects
- Humans, Thyroid Cancer, Papillary surgery, Thyroid Cancer, Papillary pathology, Prospective Studies, Lymphatic Metastasis, Ultrasonography, Interventional, Retrospective Studies, Microwaves therapeutic use, Thyroid Neoplasms diagnostic imaging, Thyroid Neoplasms surgery, Thyroid Neoplasms pathology
- Abstract
Objective: Microwave ablation (MWA) has emerged as a minimally invasive technology for papillary thyroid microcarcinoma (PTMC), but it has not been widely applied to treat T1bN0M0 PTC with high-level evidence. This study was designed to compare the real-world efficacy and safety of MWA or surgery for treating T1bN0M0 PTC., Methods: From December 2019 to April 2021, 123 continuous unifocal T1bN0M0 PTC patients without lymph node metastasis (LNM) or distant metastasis (DM) were included from 10 hospitals. Patients were allocated into the MWA or surgery group based on their willingness. The main outcomes were local tumour progression (LTP), new thyroid cancer, LNM, and DM. The secondary outcomes included changes in tumour size and volume, complications, and cosmetic results. Subgroup analyses were conducted to identify influencing factors., Results: Fifty-two patients chose MWA, and 71 patients chose surgery. Patients had similar demographic information and tumour characteristics in the two groups. The follow-up durations after MWA and surgery were 10.6 ± 4.2 and 10.4 ± 3.4 months, respectively. The LNM rate was 5.8% in the MWA group and 1.4% in the surgery group (p = 0.177). No LTP, new thyroid cancer, or distant metastasis (DM) occurred in either group. Five (9.6%) of the 52 patients in the MWA group and 8 (11.3%) of the 71 patients in the surgery group had complications (p = 0.27). Better cosmetic results were found in the MWA group (p < 0.01)., Conclusion: MWA achieved comparable short-term treatment efficacy with surgery. MWA might be an optional choice for surgery for low-risk T1bN0M0 PTC but concerns about LNM need to be studied further., Clinical Relevance Statement: MWA achieved comparable short-time treatment efficacy with surgery. MWA might be an optional choice for surgery for low-risk T1bN0M0 PTC., Key Points: • MWA achieved comparable short-term treatment efficacy with surgery. MWA might be an optional choice for surgery for low-risk T1bN0M0 PTC but concerns about LNM need to be studied further. • The complication rate in the surgery group was higher than that in the MWA group without a significant difference. • There was no statistically significant difference in the LNM rate between the MWA and surgery groups., (© 2023. The Author(s), under exclusive licence to European Society of Radiology.)
- Published
- 2024
- Full Text
- View/download PDF
42. Identification of flowering genes in Camellia perpetua by comparative transcriptome analysis.
- Author
-
Yu JJ, Cui J, Huang H, Cen DC, Liu F, Xu ZF, and Wang Y
- Subjects
- Gene Expression Profiling, RNA-Seq, Flowers, Gene Expression Regulation, Plant, Transcriptome, Camellia genetics
- Abstract
Camellia perpetua has the excellent characteristic of flowering multiple times throughout the year, which is of great importance to solve the problem of "short flowering period" and "low fresh flower yield" in the yellow Camellia industry at present. Observations of flowering phenology have demonstrated that most floral buds of C. perpetua were formed by the differentiation of axillary buds in the scales at the base of the terminal buds of annual branches. However, the molecular mechanism of flowering in C. perpetua is still unclear. In this study, we conducted a comparative transcriptomic study of the terminal buds and their basal flower buds in March (spring) and September (autumn) using RNA-seq and found that a total of 11,067 genes were significantly differentially expressed in these two periods. We identified 27 genes related to gibberellin acid (GA) synthesis, catabolism, and signal transduction during floral bud differentiation. However, treatment of the terminal buds and axillary buds of C. perpetua on annual branch with GA
3 did not induce floral buds at the reproductive growth season (in August) but promoted shoot sprouting. Moreover, 203 flowering genes were identified from the C. perpetua transcriptome library through homology alignment, including flowering integrators LEAFY (LFY) and UNUSUAL FLORAL ORGANS (UFO), as well as MADS-box, SQUAMOSA PROMOTER BINDING PROTEIN-box (SBP-box), and TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR (TCP) genes, which were specifically upregulated in floral buds and were likely involved in flowering in C. perpetua. The floral inhibitor CperTFL1b was identified and cloned from C. perpetua, and its expression level was specifically regulated in terminal buds in autumn. Ectopic overexpression of CperTFL1b delayed flowering time and produced abnormal inflorescence and floral organs in Arabidopsis, suggesting that CperTFL1b inhibits flowering. In conclusion, this study deepens our understanding of the molecular mechanism of blooms throughout the year in C. perpetua and provides a helpful reference for cultivating new varieties of yellow Camellia with improved flowering traits., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2023
- Full Text
- View/download PDF
43. Evidence for Quantum Stripe Ordering in a Triangular Optical Lattice.
- Author
-
Wang XQ, Luo GQ, Liu JY, Huang GH, Li ZX, Wu C, Hemmerich A, and Xu ZF
- Abstract
Understanding strongly correlated quantum materials, such as high-T_{c} superconductors, iron-based superconductors, and twisted bilayer graphene systems, remains as one of the outstanding challenges in condensed matter physics. Quantum simulation with ultracold atoms in particular optical lattices, which provide orbital degrees of freedom, is a powerful tool to contribute new insights to this endeavor. Here, we report the experimental realization of an unconventional Bose-Einstein condensate of ^{87}Rb atoms populating degenerate p orbitals in a triangular optical lattice, exhibiting remarkably long coherence times. Using time-of-flight spectroscopy, we observe that this state spontaneously breaks the rotational symmetry and its momentum spectrum agrees with the theoretically predicted coexistence of exotic stripe and loop-current orders. Like certain strongly correlated electronic systems with intertwined orders, such as high-T_{c} cuprate superconductors, twisted bilayer graphene, and the recently discovered chiral density-wave state in kagome superconductors AV_{3}Sb_{5} (A=K, Rb, Cs), the newly demonstrated quantum state, in spite of its markedly different energy scale and the bosonic quantum statistics, exhibits multiple symmetry breakings at ultralow temperatures. These findings hold the potential to enhance our comprehension of the fundamental physics governing these intricate quantum materials.
- Published
- 2023
- Full Text
- View/download PDF
44. Determination of the Optimal Volume of Programmed Intermittent Epidural Bolus When Combined With the Dural Puncture Epidural Technique for Labor Analgesia: A Random-Allocation Graded Dose-Response Study.
- Author
-
Xiao F, Yao HQ, Qian J, Deng JL, Xu ZF, Liu L, and Chen XZ
- Subjects
- Female, Humans, Pregnancy, Anesthetics, Local administration & dosage, Anesthetics, Local adverse effects, Pain Management, Punctures, Ropivacaine, Sufentanil administration & dosage, Sufentanil adverse effects, Analgesia, Epidural, Analgesia, Obstetrical
- Abstract
Background: The dural puncture epidural (DPE) and the programmed intermittent epidural bolus (PIEB) techniques are recent innovations for labor analgesia. The optimal volume of PIEB during traditional epidural analgesia has been investigated previously but it is unknown whether these findings are applicable to DPE. This study aimed to determine the optimal volume of PIEB for effective labor analgesia after initiation of analgesia using DPE., Methods: Parturients requesting labor analgesia received dural puncture with a 25-gauge Whitacre spinal needle and then had analgesia initiated with 15 mL of ropivacaine 0.1% with sufentanil 0.5 μg/mL. Analgesia was maintained using the same solution delivered by PIEB with boluses given at a fixed interval of 40 minutes starting 1 hour after the completion of the initial epidural dose. Parturients were randomized to 1 of 4 PIEB volume groups: 6, 8, 10, or 12 mL. Effective analgesia was defined as no requirement for a patient-controlled or manual epidural bolus for 6 hours after the completion of the initial epidural dose or until full cervical dilation. The PIEB volumes for effective analgesia in 50% of parturients (EV50) and 90% of parturients (EV90) were determined using probit regression., Results: The proportions of parturients with effective labor analgesia were 32%, 64%, 76%, and 96% in the 6-, 8-, 10-, and 12-mL groups, respectively. The estimated values for EV50 and EV90 were 7.1 (95% confidence interval [CI], 5.9-7.9) mL and 11.3 (95% CI, 9.9-15.2) mL, respectively. There were no differences in side effects, including hypotension, nausea and vomiting, and fetal heart rate (FHR) abnormalities among groups., Conclusion: Under the conditions of the study, after initiation of analgesia using DPE, the EV90 of PIEB for effective labor analgesia using ropivacaine 0.1% with sufentanil 0.5 μg/mL was approximately 11.3 mL., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2023 International Anesthesia Research Society.)
- Published
- 2023
- Full Text
- View/download PDF
45. Generation of High-Density High-Polarization Positrons via Single-Shot Strong Laser-Foil Interaction.
- Author
-
Xue K, Sun T, Wei KJ, Li ZP, Zhao Q, Wan F, Lv C, Zhao YT, Xu ZF, and Li JX
- Abstract
We put forward a novel method for producing ultrarelativistic high-density high-polarization positrons through a single-shot interaction of a strong laser with a tilted solid foil. In our method, the driving laser ionizes the target, and the emitted electrons are accelerated and subsequently generate abundant γ photons via the nonlinear Compton scattering, dominated by the laser. These γ photons then generate polarized positrons via the nonlinear Breit-Wheeler process, dominated by a strong self-generated quasistatic magnetic field B^{S}. We find that placing the foil at an appropriate angle can result in a directional orientation of B^{S}, thereby polarizing positrons. Manipulating the laser polarization direction can control the angle between the γ photon polarization and B^{S}, significantly enhancing the positron polarization degree. Our spin-resolved quantum electrodynamics particle-in-cell simulations demonstrate that employing a laser with a peak intensity of about 10^{23} W/cm^{2} can obtain dense (≳10^{18} cm^{-3}) polarized positrons with an average polarization degree of about 70% and a yield of above 0.1 nC per shot. Moreover, our method is feasible using currently available or upcoming laser facilities and robust with respect to the laser and target parameters. Such high-density high-polarization positrons hold great significance in laboratory astrophysics, high-energy physics, and new physics beyond the standard model.
- Published
- 2023
- Full Text
- View/download PDF
46. Newborn genetic screening is highly effective for high-risk infants: A single-centre study in China.
- Author
-
Wang X, Sun Y, Guan XW, Wang YY, Hong DY, Zhang ZL, Li YH, Yang PY, Jiang T, and Xu ZF
- Subjects
- Pregnancy, Infant, Newborn, Infant, Humans, Female, Genetic Testing, Predictive Value of Tests, China, Neonatal Screening, Infant, Newborn, Diseases
- Abstract
Background: Newborn genetic screening (NBGS) is promising for early detection of genetic diseases in newborns. However, little is known about its clinical effectiveness in special groups like high-risk infants. To address this gap, we aimed to investigate the impact of NBGS on high-risk infants., Methods: We screened 10 334 healthy newborns from the general maternity unit and 886 high-risk infants from the neonatal ward using both traditional newborn screening (tNBS) and NBGS, and collected clinical data from electronic medical records., Results: We found that high-risk infants had a higher proportion of eutocia (P < 0.01) and prematurity (P < 0.01). For high-risk infants vs healthy newborns screened by tNBS, the primary screening positive rate was 3.84% vs 1.31%, the false positive rate (FPR) was 3.62% vs 1.18% (P < 0.001), and the positive predictive value (PPV) was 5.88% vs 8.27%. For NBGS vs tNBS in high-risk infants, the primary screening positive rate was 0.54% vs 3.68%, the FPR was 0.22% vs 3.47%, and the PPV was 60.00% vs 5.88%., Conclusions: We found that combined newborn screening can effectively reduce the FPR caused by the high-risk symptoms and improve the PPV in high-risk infants, sufficient for more accurately showing the true status of the disease., Competing Interests: Disclosure of interest: The authors completed the ICMJE Disclosure of Interest Form (available upon request from the corresponding author) and disclose no relevant interests., (Copyright © 2023 by the Journal of Global Health. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
47. JcSEUSS1 negatively regulates reproductive organ development in perennial woody Jatropha curcas.
- Author
-
Wang J, Bai X, Su Y, Deng H, Cai L, Ming X, Tao YB, He H, Xu ZF, and Tang M
- Subjects
- Seeds genetics, Fruit genetics, Wood, Fatty Acids, Genitalia, Jatropha genetics
- Abstract
Main Conclusion: Overexpression of JcSEUSS1 resulted in late flowering, reduced flower number, wrinkled kernels, and decreased seed yield in Jatopha curcas, while downregulation of JcSEUSS1 increased flower number and seed production. The seed oil of Jatropha curcas is suitable as an ideal alternative for diesel fuel, yet the seed yield of Jatropha is restricted by its small number of female flowers and low seed setting rate. Therefore, it is crucial to identify genes that regulate flowering and seed set, and hence improve seed yield. In this study, overexpression of JcSEUSS1 resulted in late flowering, fewer flowers and fruits, and smaller fruits and seeds, causing reduced seed production and oil content. In contrast, the downregulation of JcSEUSS1 by RNA interference (RNAi) technology caused an increase in the flower number and seed yield. However, the flowering time, seed number per fruit, seed weight, and size exhibited no obvious changes in JcSEUSS1-RNAi plants. Moreover, the fatty acid composition also changed in JcSEUSS1 overexpression and RNAi plants, the percentage of unsaturated fatty acids (FAs) was increased in overexpression plants, and the saturated FAs were increased in RNAi plants. These results indicate that JcSEUSS1 played a negative role in regulating reproductive growth and worked redundantly with other genes in the regulation of flowering time, seed number per fruit, seed weight, and size., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2023
- Full Text
- View/download PDF
48. [Research progress of disease inclusion in expanded carrier screening].
- Author
-
Tan J, Tan JX, Shao BB, Wang Y, and Xu ZF
- Published
- 2023
- Full Text
- View/download PDF
49. Minichromosome maintenance 6 protects against renal fibrogenesis by regulating DUSP6-mediated ERK/GSK-3β/Snail1 signaling.
- Author
-
Huang J, Xu ZF, Liu F, Song AN, Su H, and Zhang C
- Abstract
Minichromosome maintenance 6 (MCM6) has been implicated in the progression of various malignant tumors; however, its exact physiological function in kidney diseases remains unclear. Here, we demonstrated that MCM6 levels showed a significant increase in the proximal tubular cells during progressive renal fibrosis in two unrelated in vivo fibrotic models, including unilateral ureteral obstruction (UUO) and unilateral ischemia-reperfusion injury (UIRI). Depletion of MCM6 aggravated partial epithelial-mesenchymal transition, extracellular matrix accumulation, and myofibroblast activation in the kidneys of UUO or UIRI mice. Conversely, overexpression of MCM6 promoted the recovery of E-cadherin and retarded UUO- or UIRI-induced renal fibrosis. In addition, DUSP6 expression substantially decreased in fibrotic kidneys, and it might be involved in MCM6-induced renal fibrosis by regulating the activation of ERK/GSK-3β/Snail1 signaling. In conclusion, our results highlight the significance of MCM6 in renal fibrosis, providing a potential therapeutic target for patients with chronic kidney disease., Competing Interests: All authors declare that they have no conflict of interest., (© 2023 The Authors.)
- Published
- 2023
- Full Text
- View/download PDF
50. [Expression characteristics and clinical significance of CD109 in de novo acute myeloid leukemia].
- Author
-
Wang LX, Chen Y, Dong ST, Ren FG, Zhang YF, Chang JM, Tan YH, Chen XH, Wang HW, and Xu ZF
- Subjects
- Humans, Transcription Factors, Neoplasm Proteins, Antigens, CD, GPI-Linked Proteins, Clinical Relevance, Leukemia, Myeloid, Acute
- 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.