1,769 results on '"Wenjun, Liu"'
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2. Progressive calcification of bioprosthetic mitral valve observed during pregnancy resulting from in vitro fertilization: a case report
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Wenjun Liu and Guiying Yang
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Bioprosthetic heart valve ,Calcification ,In Vitro Fertilization ,Pregnancy ,Structural valve degeneration ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Women with pre-existing cardiac conditions who undergo assisted reproductive technologies (ART) are believed to be at a heightened risk of cardiovascular events during both the treatment and pregnancy phases. An unresolved question within this context pertains to whether the ART procedure itself constitutes a risk factor for individuals with bioprosthetic heart valves (BHV). Additionally, there is ongoing controversy regarding whether pregnancies expedite the process of structural valve degeneration (SVD) in BHV. The purpose of this study is to present the developmental process of BHV calcification, which is considered the primary cause of SVD, during a pregnancy resulting from in vitro fertilization and embryo transfer (IVF-ET), an ART modality, and to elucidate the underlying mechanisms. Case presentation At 7 + 3 weeks of gestation in a twin pregnancy resulting from IVF-ET, a 27-year-old woman with a bioprosthetic mitral valve manifesting severe mitral stenosis and moderate pulmonary arterial hypertension, was suspected of SVD. Despite undergoing fetal reduction, she experienced progressive calcification of the bioprosthetic valve, increasing pulmonary arterial pressure and ultimately deteriorated into heart failure. An elective cesarean section and redo valve replacement was subsequently administered to improve her cardiovascular condition. As a result, a healthy young boy was delivered and the dysfunctional BHV was replaced with a mechanical valve. She did not report any discomfort during the 3-month follow-up. Conclusion The progressive calcification of the BHV was observed during IVF pregnancy, indicating a potential connection between fertility therapy, pregnancy and calcification of BHV. Pregnant women with pre-implanted BHV should be treated with caution, as any medical interventions during ART and pregnancy can have a significant impact on both maternal and fetal outcomes. Thus, involving a multidisciplinary team in decision-making early on, starting from the treatment of the original heart disease, throughout the entire process of ART and pregnancy, is crucial.
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- 2024
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3. SALL2 regulates neural differentiation of mouse embryonic stem cells through Tuba1a
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Hui Xiong, Bowen Lin, Junyang Liu, Renhong Lu, Zheyi Lin, Chengwen Hang, Wenjun Liu, Lei Zhang, Jie Ding, Huixin Guo, Mingshuai Zhang, Siyu Wang, Zheng Gong, Duanyang Xie, Yi Liu, Dan Shi, Dandan Liang, Zhen Liu, Yi-Han Chen, and Jian Yang
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Cytology ,QH573-671 - Abstract
Abstract The spalt (Sal) gene family has four members (Sall1-4) in vertebrates, all of which play pivotal roles in various biological processes and diseases. However, the expression and function of SALL2 in development are still less clear. Here, we first charted SALL2 protein expression pattern during mouse embryo development by immunofluorescence, which revealed its dominant expression in the developing nervous system. With the establishment of Sall2 deficient mouse embryonic stem cells (ESCs), the in vitro neural differentiation system was leveraged to interrogate the function of SALL2, which showed impaired neural differentiation of Sall2 knockout (KO) ESCs. Furthermore, neural stem cells (NSCs) could not be derived from Sall2 KO ESCs and the generation of neural tube organoids (NTOs) was greatly inhibited in the absence of SALL2. Meanwhile, transgenic expression of E1 isoform of SALL2 restored the defects of neural differentiation in Sall2 KO ESCs. By chromatin immunoprecipitation sequencing (ChIP-seq), Tuba1a was identified as downstream target of SALL2, whose function in neural differentiation was confirmed by rescuing neural phenotypes of Sall2 KO ESCs when overexpressed. In sum, by elucidating SALL2 expression dynamics during early mouse development and mechanistically characterizing its indispensable role in neural differentiation, this study offers insights into SALL2’s function in human nervous system development, associated pathologies stemming from its mutations and relevant therapeutic strategy.
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- 2024
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4. Lactiplantibacillus plantarum P9 for chronic diarrhea in young adults: a large double-blind, randomized, placebo-controlled trial
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Ni Yang, Teng Ma, Yong Xie, Qiong Li, Yingmeng Li, Longjin Zheng, Yalin Li, Qiuping Xiao, Zhihong Sun, Kexuan Zuo, Lai-Yu Kwok, Nonghua Lu, Wenjun Liu, and Heping Zhang
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Science - Abstract
Abstract Current treatments for chronic diarrhea have limited efficacy and several side effects. Probiotics have the potential to alleviate symptoms of diarrhea. This randomized, double-blind, placebo-controlled trial evaluates the effects of administering the probiotic Lactiplantibacillus plantarum P9 (P9) strain in young adults with chronic diarrhea (Clinical Trial Registration Number: ChiCTR2000038410). The intervention period lasts for 28 days, followed by a 14-day post-intervention period. Participants are randomized into the P9 (n = 93) and placebo (n = 96) groups, with 170 individuals completing the double-blind intervention phase (n = 85 per group). The primary endpoint is the diarrhea symptom severity score. Both intention-to-treat (n = 189) and per-protocol (n = 170) analyses reveal a modest yet statistically significant reduction in diarrhea severity compared to the placebo group (20.0%, P = 0.050; 21.4%, P = 0.048, respectively). In conclusion, the results of this study support the use of probiotics in managing chronic diarrhea in young adults. However, the lack of blood parameter assessment and the short intervention period represent limitations of this study.
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- 2024
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5. Ribosomal modification protein rimK-like family member A activates betaine-homocysteine S-methyltransferase 1 to ameliorate hepatic steatosis
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Han Yan, Wenjun Liu, Rui Xiang, Xin Li, Song Hou, Luzheng Xu, Lin Wang, Dong Zhao, Xingkai Liu, Guoqing Wang, Yujing Chi, and Jichun Yang
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Medicine ,Biology (General) ,QH301-705.5 - Abstract
Abstract Nonalcoholic fatty liver disease (NAFLD) is a serious threat to public health, but its underlying mechanism remains poorly understood. In screening important genes using Gene Importance Calculator (GIC) we developed previously, ribosomal modification protein rimK-like family member A (RIMKLA) was predicted as one essential gene but its functions remained largely unknown. The current study determined the roles of RIMKLA in regulating glucose and lipid metabolism. RIMKLA expression was reduced in livers of human and mouse with NAFLD. Hepatic RIMKLA overexpression ameliorated steatosis and hyperglycemia in obese mice. Hepatocyte-specific RIMKLA knockout aggravated high-fat diet (HFD)-induced dysregulated glucose/lipid metabolism in mice. Mechanistically, RIMKLA is a new protein kinase that phosphorylates betaine-homocysteine S-methyltransferase 1 (BHMT1) at threonine 45 (Thr45) site. Upon phosphorylation at Thr45 and activation, BHMT1 eliminated homocysteine (Hcy) to inhibit the activity of transcription factor activator protein 1 (AP1) and its induction on fatty acid synthase (FASn) and cluster of differentiation 36 (CD36) gene transcriptions, concurrently repressing lipid synthesis and uptake in hepatocytes. Thr45 to alanine (T45A) mutation inactivated BHMT1 to abolish RIMKLA’s repression on Hcy level, AP1 activity, FASn/CD36 expressions, and lipid deposition. BHMT1 overexpression rescued the dysregulated lipid metabolism in RIMKLA-deficient hepatocytes. In summary, RIMKLA is a novel protein kinase that phosphorylates BHMT1 at Thr45 to repress lipid synthesis and uptake. Under obese condition, inhibition of RIMKLA impairs BHMT1 activity to promote hepatic lipid deposition.
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- 2024
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6. Exploring the mechanism of fraxetin against acute myeloid leukemia through cell experiments and network pharmacology
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Tingting Fang, Lanqin Liu, and Wenjun Liu
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Fraxetin ,Acute myeloid leukemia ,Cell proliferation and apoptosis ,Network pharmacology ,Other systems of medicine ,RZ201-999 - Abstract
Abstract Objective Previous studies have shown that fraxetin has antitumor activity in a variety of tumors, but its role in acute myeloid leukemia (AML) remains unclear. In this study, we aimed to evaluate the anti-AML effect of fraxetin through cell experiments and network pharmacology analysis. Methods The inhibitory and apoptotic effects of fraxetin on AML cells were determined by CCK-8 and flow cytometry experiments. Potential targets of fraxetin and AML-related targets were screened using public databases. PPI network, GO functional enrichment and KEGG pathway enrichment analyses were performed to predict the hub targets and signaling pathways by which fraxetin alleviates AML. Molecular docking was used to determine the fraxetin binding sites on hub targets. Using the GEPIA database, the expression of hub targets was analyzed in relation to the overall survival of AML patients. Results Cell experiments showed that fraxetin inhibits AML cell proliferation and induces apoptosis. To explore the potential mechanism of fraxetin, 29 shared targets of fraxetin and AML were obtained through screening online public databases. Among them, AKT1, TNF, SRC, etc., are related to AML cell apoptosis. The expression levels of SRC, NOS3, VAV1, LYN, and PTGS1 were associated with the overall survival of AML patients (p value
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- 2024
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7. Independent and joint influence of depression and advanced lung cancer inflammation index on mortality among individuals with chronic kidney disease
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Jie Zhou, Wenjun Liu, Xiaoxin Liu, Jijun Wu, and Ying Chen
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inflammatory ,nutritional ,chronic kidney disease ,depression ,mortality ,NHANES ,Nutrition. Foods and food supply ,TX341-641 - Abstract
BackgroundThe combined effect of depression and nutritional-inflammatory status on mortality in the chronic kidney disease (CKD) population is unclear.MethodsWe prospectively analyzed 3,934 (weighted population: 22,611,423) CKD participants from the National Health and Nutrition Examination Survey (2007–2018). Depression and nutritional-inflammatory status were assessed with Patient Health Questionnaire 9 (PHQ-9) and Advanced Lung Cancer Inflammation Index (ALI), respectively. Weighted multivariate COX regression models, restricted cubic splines (RCS) models, and stratified analyses were used to investigate the association of PHQ-9 scores and ALI with all-cause mortality.ResultsDuring a median follow-up of 5.8 years (interquartile range 3.4–8.6 years), a total of 985 patients died (25.0%). Each point increase in a patient’s PHQ-9 score increased the risk of all-cause mortality by 4% (HR, 1.04; 95% CI, 1.02–1.06; p 0.05 for interaction).ConclusionIn a nationally representative sample of US patients with CKD, coexisting depression and poorer nutrition-inflammation were associated with a significantly increased risk of all-cause mortality.
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- 2024
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8. Apoptosis, inflammatory and innate immune responses induced by infection with a novel goose astrovirus in goose embryonic kidney cells
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Zhanpeng Hou, Shaobing Jin, Yu Liang, Haiyue Wang, Danli Jiang, Nan Cao, Minhua Sun, Yunbo Tian, Wenjun Liu, Danning Xu, and Xinliang Fu
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GoAstV ,apoptosis ,inflammatory response ,innate immune ,NLRP3 ,Microbiology ,QR1-502 - Abstract
IntroductionSince 2016, a highly lethal visceral gout induced by infection with the novel goose astrovirus (GoAstV) resulted in an ongoing outbreak in goslings in China, with a mortality rate ranging from 10% to 50%, and causing considerable economic losses in the goose industry. However, the pathogenesis of GoAstV and the molecular mechanism by which kidney lesions are induced by GoAstV infection are unclear.MethodsIn the present study, a GEK cell infection model for GoAstV was established, and the apoptosis, inflammatory and innate immune responses induced by GoAstV were investigated in GEK cells.ResultsThe results shown that the expression of proapoptotic proteins, including Bax, caspase-3, caspase-9 and cytochrome c, increased in the infection group; however, the expression of the antiapoptotic protein Bcl-2 decreased, indicating that apoptosis was induced by GoAstV infection in GEK cells. Besides, the activation of the RIG-I/MDA5 pathway and the downstream upregulation of proinflammatory cytokines, including the adapter proteins MAVS, IRF7 and NF-κB and the proinflammatory cytokines IL-6, IL-8 and TNF-α, were detected in GEK cells infected with GoAstV. In addition, GoAstV infection induces the activation of the NLPR3 pathway and further stimulates the increased production of IL-1β. In summary, the present study revealed that GoAstV infection could induce apoptosis and the activation of the RIG-I/MDA5 and NLRP3 pathways in GEK cells, as well as the massive release of proinflammatory cytokines.DiscussionThese results are helpful for elucidating the molecular mechanism of pathological lesions in the kidney in gout goslings infected with GoAstV and the interaction between GoAstV and the innate immune system of the host.
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- 2024
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9. Huaier inhibits autophagy and promotes apoptosis in T-cell acute lymphoblastic leukemia by down-regulating SIRT1
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Xiang Qin, Xi Chen, Fan Wang, Fangfang Zhong, Yan Zeng, and Wenjun Liu
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Huaier ,T-cell acute lymphoblastic leukemia ,SIRT1 ,Apoptosis ,Autophagy ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Objective: Due to the high drug resistance and relapse rate of T-cell acute lymphoblastic leukemia (T-ALL), the prognosis is usually poor. Therefore, there is an urgent need to find safer and more effective therapeutic drugs. Huaier and its preparations, as adjuvant drugs, have been widely used in the treatment of solid tumors and other diseases. However, the application of Huaier in leukemia is rarely reported. In this study, we investigated the anti-tumor effect of Huaier on T- ALL and its underlying mechanism. Methods: Jurkat and MOLT-4 cells were treated with Huaier. Cell viability was evaluated by CCK-8 assay. The morphological changes of apoptotic cells were observed by Hoechst 33258 staining. Cell apoptosis was analyzed by flow cytometry. The expression levels of related proteins were assessed by Western blot. Results: The results showed that Huaier significantly inhibited the proliferation of Jurkat and MOLT-4 cells in a dose- and time-dependent manner, with IC50 of 2.37 ± 0.10 and 1.93 ± 0.07 mg/mL at 48 h, respectively. Morphological changes and increased number of apoptotic cells were observed by Hoechst 33258 staining and flow cytometry. The apoptosis rates of Jurkat and MOLT-4 cells in 4 mg/mL group were 50.67 ± 1.36 % and 49.97 ± 5.43 %, respectively. Huaier promoted the expression of Cytochrome c, Cleaved Caspase-3, Cleaved PARP, p53, LC3-Ⅱ and p62 proteins, while inhibited the expression of SIRT1, ATG7 and Beclin 1 proteins. Treatment with SRT1720 (SIRT1 agonist) combined with Huaier rescued Huaier-induced apoptosis and increased the expression of autophagy-related proteins. Conclusion: Huaier inhibits autophagy and promotes apoptosis of T-ALL cells by down-regulating SIRT1, which may be a potential drug for the treatment of T-ALL.
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- 2024
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10. Single molecule measurements of microRNAs in the serum of patients with pulmonary tuberculosis
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Zhuhua Wu, Qiuchan Tan, Xiaojuan Jia, Huizhong Wu, Jing Liang, Wenpei Wen, Xuezhi Wang, Chenchen Zhang, Yuchuan Zhao, Yuhui Chen, Tingrong Luo, Wenjun Liu, and Xunxun Chen
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tuberculosis ,microRNAs ,single molecule array ,biomarker ,Serum ,Immunologic diseases. Allergy ,RC581-607 - Abstract
BackgroundmicroRNAs (miRNAs) were recognized as a promising source of diagnostic biomarker. Herein, we aim to evaluate the performance of an ultrasensitive method for detecting serum miRNAs using single molecule arrays (Simoa).MethodsIn this study, candidate miRNAs were trained and tested by RT-qPCR in a cohort of PTB patients. Besides that, ultrasensitive serum miRNA detection were developed using the Single Molecule Array (Simoa) platform. In this ultra-sensitive sandwich assay, two target-specific LNA-modified oligonucleotide probes can be simply designed to be complementary to the half-sequence of the target miRNA respectively. We characterized its analytical performance and measured miRNAs in the serum of patients with pulmonary tuberculosis and healthy individuals.ResultsWe identified a five signature including three upregulated (miR-101, miR-196b, miR-29a) and two downregulated (miR-320b, miR-99b) miRNAs for distinguishing PTB patients from HCs, and validated in our 104 PTB patients. On the basis of Simoa technology, we developed a novel, fully automated digital analyser, which can be used to directly detect miRNAs in serum samples without pre-amplification. We successfully detected miRNAs at femtomolar concentrations (with limits of detection [LODs] ranging from 0.449 to 1.889 fM). Simoa-determined serum miR-29a and miR-99b concentrations in patients with PTB ((median 6.06 fM [range 0.00–75.22]), (median 2.53 fM [range 0.00–24.95]), respectively) were significantly higher than those in HCs ((median 2.42 fM [range 0.00–28.64]) (P < 0.05), (median 0.54 fM [range 0.00–9.12] (P < 0.0001), respectively). Serum levels of miR-320b were significantly reduced in patients with PTB (median 2.11 fM [range 0.00–39.30]) compared with those in the HCs (median 4.76 fM [range 0.00–25.10]) (P < 0.001). A combination of three miRNAs (miR-29a, miR-99b, and miR-320b) exhibited a good capacity to distinguish PTB from HCs, with an area under the curve (AUC) of 0.818 (sensitivity: 83.9%; specificity: 79.7%).ConclusionsThis study benchmarks the role of Simoa as a promising tool for monitoring miRNAs in serum and offers considerable potential as a non-invasive platform for the early diagnosis of PTB.
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- 2024
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11. GBTWSVM: Granular-Ball Twin Support Vector Machine.
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Lixi Zhao, Zhifei Zhang, Wenjun Liu, and Guangming Lang
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- 2024
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12. Research on RFID Indoor Localization Algorithm Based on Virtual Tags and Fusion of LANDMARC and Kalman Filter
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Jiangbo, Wu, Wenjun, Liu, Hong, Liu, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin, Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Li, Jingchao, editor, Zhang, Bin, editor, and Ying, Yulong, editor
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- 2024
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13. YOLO-L: A YOLO-Based Algorithm for Remote Sensing Image Target Detection
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Yinghe, Wang, Wenjun, Liu, Jiangbo, Wu, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin, Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Li, Jingchao, editor, Zhang, Bin, editor, and Ying, Yulong, editor
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- 2024
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14. Effects of Lacidophilin on Inflammatory and Intestinal Microflora in Mice with Helicobacter pylori Induced Gastritis
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Xiaoying CHENG, Yang ZHAN, Yanan ZHOU, Jingwen ZHANG, Yingmeng LI, and Wenjun LIU
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lacidophilin ,helicobacter pylori ,gastritis ,intestinal microflora ,Food processing and manufacture ,TP368-456 - Abstract
Objective: The aim of this study was to investigate the effect of lacidophilin on inflammation and intestinal microflora in H. pylori-induced gastritis mice. Methods: Established an H. pylori-infected mice model by orally administering an H. pylori suspension. The mice were randomly divided into a model group and a lacidophilin treatment group, which received treatment for four weeks. Gram staining, Warthin-Starry silver staining, and H. pylori immunohistochemical staining were conducted to confirm the colonization of H. pylori in the gastric mucosa of mice. Hematoxylin and eosin (HE) staining was performed to observe any histopathological changes in the gastric mucosa of mice. Immunohistochemistry was carried out to observe the expression of iNOS, IL-1β, and 3-Nitrotyrosine in the gastric mucosa of mice. Additionally, the structure of intestinal microflora was analyzed using 16S rRNA sequencing. Results: The successful establishment of H. pylori-infected mice. Lacidophilin improved the stomach histopathological morphology in mice with H. pylori-induced gastritis and inhibited iNOS, IL-1β, and 3-Nitrotyrosine expression in the gastric mucosa. The composition and structure of the gut microbiota among the lacidophilin group showed noticeable differences in comparison to the H. pylori-infected group. Lacidophilin augmented the diversity of intestinal microflora in H. pylori-infected mice by regulating the abundance of Firmicutes, Actinobacteriota, Bacteroidete, and Verrucomicrobiota. At the genus level, Lacidophilin resulted in significant growth stimulation of beneficial bacteria such as g_norank_f_Muribaculaceae, Akkermansia, and Alistipes, while suppressing the proliferation of inflammation-related bacteria such as Dubosiella, thereby improving the composition and structure of the gut microbiota. Conclusion: Lacidophilin has the potential to rebalance the composition and structure of gut microbiota that has been compromised by H. pylori infection. It may have a protective effect on mice with H. pylori-induced gastritis by promoting the growth of beneficial bacteria, reducing inflammatory reactions, and alleviating oxidative damage to the gastric mucosa.
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- 2024
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15. Effects of stocking density on the homeostasis of uric acid and related liver and kidney functions in ducks
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Peiyi Lin, Sui Liufu, Jinhui Wang, Zhanpeng Hou, Yu Liang, Haiyue Wang, Bingxin Li, Nan Cao, Wenjun Liu, Yunmao Huang, Yunbo Tian, Danning Xu, Xiujin Li, and Xinliang Fu
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hyperuricemia ,inflammatory lesions ,stocking density ,uric acid ,Zoology ,QL1-991 - Abstract
Objective Stocking density (SD) is an important issue in the poultry industry, which is related to the production performance, intestinal health and immune status. In the present study, the effects of SD on the metabolism and homeostasis of uric acid as well as the related functions of the liver and kidney in ducks were examined. Methods A total of 360 healthy 56-day-old Shan-ma ducks were randomly divided into the low stocking density (n = 60, density = 5 birds/m2), medium stocking density (n = 120, density = 10 birds/m2) and high stocking density groups (HSD; n = 180, density = 15 birds/m2). Samples were collected in the 3rd, 6th, and 9th weeks of the experiment for analysis. Results The serum levels of uric acid, lipopolysaccharide and inflammatory cytokines (interleukin-1β [IL-1β], IL-8, and tumor necrosis factor-α [TNF-α]) were increased significantly in the HSD group. Serious histopathological lesions could be seen in both the livers and kidneys in the HSD group in the 9th week. The mRNA expression levels of inflammatory cytokines (IL-8 and TNF-α) and related pathway components (toll-like receptor 4, myeloid differentiation primary response gene 88, and nuclear factor-κB) were increased significantly in both the livers and kidneys in the HSD group. The mRNA expression levels of enzymes (adenosine deaminase, xanthine oxidase, phosphoribosyl pyrophosphate amidotransferase, and phosphoribosyl pyrophosphate synthetase 1) related to the synthesis of uric acid increased significantly in the livers in the HSD group. However, the mRNA expression level of solute carrier family 2 member 9, which plays an important role in the excretion of uric acid by the kidney, was decreased significantly in the kidneys in the HSD group. Conclusion These results indicated that a higher SD could cause tissue inflammatory lesions in the liver and kidney and subsequently affect the metabolism and homeostasis of uric acid, and is helpful for guiding decisions related to the breeding and production of ducks.
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- 2024
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16. Activation of dislocations in Mg with solute Y
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Alireza Maldar, Leyun Wang, Boyu Liu, Wenjun Liu, Zhaohui Jin, Bijin Zhou, and Xiaoqin Zeng
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Mining engineering. Metallurgy ,TN1-997 - Abstract
Mg-Y cast alloy shows excellent ductility (elongation to failure > 15%) compared with pure Mg and commercial Mg cast alloys. By monitoring the microstructure evolution during an in situ tensile test of a Mg-2.5 wt%Y alloy, we identify the activation of prismatic slip, which is rare in Mg. Synchrotron X-ray micro-beam Laue diffraction (μ-Laue) and transmission electron microscopy revealed the morphology of prismatic slip bands and individual dislocations. Density functional theory and molecular dynamics calculations indicate that solute Y can significantly reduce the stacking fault energy (SFE) along direction on prismatic plane in Mg lattice and thus facilitate the nucleation of dislocations during deformation. The presence of free dislocations in the Mg lattice can also lead to nucleation of {10–12} twins even under unfavorable geometric conditions.
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- 2024
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17. Lacidophilin tablets alleviate constipation through regulation of intestinal microflora by promoting the colonization of Akkermansia sps
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Denglong Sun, Jingting Yu, Yang Zhan, Xiaoying Cheng, Jingwen Zhang, Yingmeng Li, Qiong Li, Yanxia Xiong, and Wenjun Liu
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Medicine ,Science - Abstract
Abstract Constipation is a major health problem worldwide that requires effective and safe treatment options. Increasing evidence indicates that disturbances in gut microbiota may be a risk factor for constipation. Administration of lacidophilin tablets shows promising therapeutic potential in the treatment of inflammatory bowel disease owing to their immunomodulatory properties and regulation of the gut microbiota. The focus of this study was on investigating the ability of lacidophilin tablets to relieve constipation by modulating the gut microbiome. Rats with loperamide hydrochloride induced constipation were treated with lacidophilin tablets via intragastric administration for ten days. The laxative effect of lacidophilin tablets was then evaluated by investigating the regulation of intestinal microflora and the possible underlying molecular mechanism. Our results reveal that treatment with lacidophilin tablets increased the intestinal advancement rate, fecal moisture content, and colonic AQP3 protein expression. It also improved colonic microflora structure in the colonic contents of model rats mainly by increasing Akkermansia muciniphila and decreasing Clostridium_sensu_stricto_1. Transcriptome analysis indicated that treatment with lacidophilin tablets maintains the immune response in the intestine and promotes recovery of the intestinal mechanical barrier in the constipation model. Our study shows that lacidophilin tablets improve constipation, possibly by promoting Akkermansia colonization and by modulating the intestinal immune response.
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- 2024
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18. RBP7 functions as a tumor suppressor in HR + breast cancer by inhibiting the AKT/SREBP1 pathway and reducing fatty acid
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Yue Yu, Zhihua Xu, Hao Zhou, Ruyan Xu, Jia Xu, Wenjun Liu, Yuxin Wu, Yue Qiu, Guangbo Zhang, Xue Huang, and Yan Chen
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Breast cancer ,RBP7 ,Prognosis ,Fatty acid metabolism ,Nomogram ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Background Increasing evidence proves that RBP7 plays a significant role in breast cancer (BC). The present study was aimed to investigate the mechanism of RBP7. Methods Western Blotting and qRT-PCR were performed for evaluating the expression levels. CCK8, colony forming, xenograft mouse model, wound healing and transwell assays were conducted to examine cell ability of proliferation, invasion and migration. Nile red staining and Oil red O staining were used for testing the lipid. Results RBP7 was related to overall survival (OS) in patients with HR + BC. RBP7 protein was significantly decreased in HR + BC tissues and cells. RBP7 suppressed HR + BC cell proliferation in vitro and in vivo, and inhibited migration and invasion. RBP7 reduced fatty acid in HR + BC cells by inhibiting the AKT/SREBP1 pathway. Conclusions RBP7 may function as a tumor suppressor in HR + BC by inhibiting the AKT/SREBP1 pathway and reducing fatty acid.
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- 2024
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19. A novel approach for assessing osteoporosis utilizing DXA, HU and VBQ
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Wei Xu, Yifan Li, Xiangyang Zhang, Liwei Chen, Silian Wang, Yi Wang, Wenjun Liu, Ruijun Xu, Xiaojian Ye, Chi Zhang, and Zhikun Li
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Combination method ,Osteoporosis ,Cement reinforced screws ,HU ,VBQ ,Biotechnology ,TP248.13-248.65 ,Medical technology ,R855-855.5 - Abstract
Objective: To precisely assess preoperative osteoporosis in patients, a more precise method for evaluating osteoporosis is being developed to better guide the use of bone cement reinforced screws. Method: The retrospective analysis was conducted on patients who underwent posterior lumbar decompression and fusion internal fixation at Shanghai Tongren Hospital.The general information, bone mineral density assessment data, Fracture risk prediction rate(WHO Fracture Risk Assessment Tool (FRAX)), and whether to use cement reinforced screws were collected. Definition of combination method: T value 3.5.The diagnostic rates of osteoporosis were compared between dual energy x-ray absorptiometry(DXA), Hounsfield Units(HU), Vertebral Bone Quality (VBQ), National Bone Health Alliance(NBHA), and combination methods, and the correlation between different methods was analyzed. Binary logistic regression was used to analyze the significant influencing factors of the use of cement-reinforced screws. Result: A total of 178 patients were enrolled in the study, aged 65.73 ± 14.43 years, 121 female, 57 male, Body Mass Index(BMI) was 22.88 ± 3.52, 57 (32.0%) used cement reinforced screws, and 14 (7.9%) had previous fracture history.The diagnostic rates of osteoporosis by DXA, HU, VBQ, NBHA and combination method were 22.5% (40/178), 47.2% (84/178), 56.2% (100/178), 64.0% (114/178) and 75.8% (135/178), respectively.HU, VBQ, NBHA, and combination methods were significantly different from DXA in the diagnosis rate of osteoporosis (P
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- 2024
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20. sSNAPPY: an R/Bioconductor package for single-sample directional pathway perturbation analysis [version 1; peer review: awaiting peer review]
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Wenjun Liu, Ville-Petteri Mäkinen, Wayne D Tilley, and Stephen M Pederson
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Software Tool Article ,Articles ,RNA-Seq ,pathway enrichment ,R package ,topology ,KEGG ,Reactome ,scRNA-seq - Abstract
A common outcome of analysing RNA-Seq data is the detection of biological pathways with significantly altered activity between the conditions under investigation. Whilst many strategies test for over-representation of genes, showing changed expression within pre-defined gene-sets, these analyses typically do not account for gene-gene interactions encoded by pathway topologies, and are not able to directly predict the directional change of pathway activity. To address these issues we have developed sSNAPPY,now available as an R/Bioconductor package, which leverages pathway topology information to compute pathway perturbation scores and predict the direction of change across a set of pathways. Here, we demonstrate the use of sSNAPPY by applying the method to public scRNA-seq data, derived from ovarian cancer patient tissues collected before and after chemotherapy. Not only were we able to predict the direction of pathway perturbations discussed in the original study, but sSNAPPY was also able to detect significant changes of other biological processes, yielding far greater insight into the response to treatment. sSNAPPY represents a novel pathway analysis strategy that takes into consideration pathway topology to predict impacted biology pathways, both within related samples and across treatment groups. In addition to not relying on differentially expressed genes, the method and associated R package offers important flexibility and provides powerful visualisation tools. R version: R version 4.3.3 (2024-02-29) Bioconductor version: 3.18 Package: 1.6.1
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- 2024
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21. A Functional InDel in the WRKY10 Promoter Controls the Degree of Flesh Red Pigmentation in Apple
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Nan Wang, Wenjun Liu, Zhuoxin Mei, Shuhui Zhang, Qi Zou, Lei Yu, Shenghui Jiang, Hongcheng Fang, Zongying Zhang, Zijing Chen, Shujing Wu, Lailiang Cheng, and Xuesen Chen
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anthocyanin ,functional InDel ,red‐fleshed apple ,structural variation ,WRKY ,Science - Abstract
Abstract MYB transcription factors have been linked to anthocyanin synthesis and various color phenotypes in plants. In apple, MYB10 confers a red‐flesh phenotype due to a minisatellite insertion in its R6 promoter, but R6:MYB10 genotypes exhibit various degrees of red pigmentation in the flesh, suggesting the involvement of other genetic factors. Here, it is shown that MdWRKY10, a transcription factor identified via DNA pull‐down trapping, binds to the promoter of MdMYB10 and activates its transcription. MdWRKY10 specifically interacts with the WDR protein MdTTG1 to join the apple MYB‐bHLH‐WDR (MBW) complex, which significantly enhances its transcriptional activation activity. A 163‐bp InDel detected in the promoter region of the alleles of MdWRKY10 in a hybrid population of identical heterozygous genotypes regarding R6 by structural variation analysis, contains a typical W‐box element that MdWRKY10 binds to for transactivation. This leads to increased transcript levels of MdWRKY10 and MdMYB10 and enhanced anthocyanin synthesis in the flesh, largely accounting for the various degrees of flesh red pigmentation in the R6 background. These findings reveal a novel regulatory role of the WRKY‐containing protein complex in the formation of red flesh apple phenotypes and provide broader insights into the molecular mechanism governing anthocyanin synthesis in plants.
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- 2024
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22. Probio‐M9, a breast milk‐originated probiotic, alleviates mastitis and enhances antibiotic efficacy: Insights into the gut–mammary axis
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Jie Yu, Weicheng Li, Ruibo Xu, Xiaoye Liu, Guangqi Gao, Lai‐Yu Kwok, Yongfu Chen, Zhihong Sun, Wenjun Liu, and Heping Zhang
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Computer applications to medicine. Medical informatics ,R858-859.7 - Published
- 2024
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23. Silymarin effectively prevents and treats Eimeria tenella infection in chicks
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Lixue Han, Xiaoyi Han, Jia Meng, Jin Yang, Shuning Kang, Xiaoling Lv, Xiaozhen Cui, Jianhui Li, Wenjun Liu, and Rui Bai
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Silymarin ,Eimeria tenella ,prevention and treatment ,antioxidant ,intestinal microbiota ,Animal culture ,SF1-1100 - Abstract
ABSTRACT: Silymarin, a botanical medicine derived from milk thistle seeds and is known to improve chicken growth and gut health when added to the feed. However, its role in the prevention and treatment of chicken coccidiosis remains unclear. This study investigated the efficacy of various doses of silymarin in preventing and treating Eimeria tenella infection in chicks. A total of 180 one-day-old specific pathogen-free chicks were randomized into six groups of 30 chicks each, no treatment (NC group); E. tenella infection (CC group); diclazuril medication during d 14 to 21 and E. tenella infection (DC group); and three groups infected with E. tenella and administered low, medium, or high doses of silymarin during d 12 to 21. All groups except NC were infected with E. tenella on d 14, with indicators observed on d 21. The growth performance was higher in the silymarin treated groups than that in the CC group, and the oocyst count per gram of manure, blood stool, and cecal lesion scores decreased. The medium-dose silymarin group exhibited the best treatment effect. Additionally, the silymarin groups displayed improved histological, morphology, and intestinal barrier integrity. The amounts of proinflammatory factors and harmful bacteria in the cecum were also reduced. Additionally, the activity of serum and cecal antioxidant enzymes, as well as the abundance of beneficial gut microbiota, increased in the cecum. In conclusion, this study demonstrated that silymarin can prevent and treat E. tenella infections. These data provide a scientific and conceptual basis for the development of a botanical dietary supplement from silymarin for the treatment and control of coccidiosis in chicks.
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- 2024
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24. Multi-omics evaluation of the prognostic value and immune signature of FCN1 in pan-cancer and its relationship with proliferation and apoptosis in acute myeloid leukemia
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Fangfang Zhong, Lijun Song, Hao li, Jing Liu, Chunyan Liu, Qulian Guo, and Wenjun Liu
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FCN1 ,macrophages ,AML ,apoptosis ,biomarkers ,Genetics ,QH426-470 - Abstract
BackgroundThe FCN1 gene encodes the ficolin-1 protein, implicated in the pathogenesis of various diseases, though its precise role in tumorigenesis remains elusive. This study aims to elucidate the prognostic significance, immune signature, and treatment response associated with FCN1 across diverse cancer types.MethodsEmploying multi-omics data, we conducted a comprehensive assessment, encompassing tissue-specific and single-cell-specific expression disparities, pan-cancer expression patterns, epigenetic modifications affecting FCN1 expression, and the immune microenvironment. Our investigation primarily focused on the clinical prognostic attributes, immune profiles, potential molecular mechanisms, and candidate therapeutic agents concerning FCN1 and acute myeloid leukemia (AML). Additionally, in vitro experiments were performed to scrutinize the impact of FCN1 knockdown on cell proliferation, apoptosis, and cell cycle dynamics within the AML cell line U937 and NB4.ResultsFCN1 expression exhibits widespread dysregulation across various cancers. Through both univariate and multivariate Cox regression analyses, FCN1 has been identified as an independent prognostic indicator for AML. Immunological investigations elucidate FCN1’s involvement in modulating inflammatory responses within the tumor microenvironment and its correlation with treatment efficacy. Remarkably, the deletion of FCN1 influences the proliferation, apoptosis, and cell cycle dynamics of U937 cells and NB4 cells.ConclusionThese findings underscore FCN1 as a promising pan-cancer biomarker indicative of macrophage infiltration, intimately linked with the tumor microenvironment and treatment responsiveness, and pivotal for cellular mechanisms within AML cell lines.
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- 2024
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25. Retraction notice to 'Physcion blocks cell cycle and induces apoptosis in human B cell precursor acute lymphoblastic leukemia cells by downregulating HOXA5' [Biomed. Pharmacother. 94 (2017) 850–857]
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Fei Gao, Wenjun Liu, Qulian Guo, Yongqi Bai, Hong Yang, and Hongying Chen
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Therapeutics. Pharmacology ,RM1-950 - Published
- 2024
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26. The crowding out effect of local government debt expansion: Insights from commercial credit financing
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Yu, Siming, Kang, Wan, Wenjun, Liu, Wang, Deli, Zheng, Jieying, and Dong, Boyan
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- 2024
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27. The dynamic landscape of chromatin accessibility and active regulatory elements in the mediobasal hypothalamus influences the seasonal activation of the reproductive axis in the male quail under long light exposure
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Jianye Chang, Yanglong Xu, Yuting Fu, Jiaxin Liu, Danli Jiang, Jianqiu Pan, Hongjia Ouyang, Wenjun Liu, Jin Xu, Yunbo Tian, Yunmao Huang, Jue Ruan, and Xu Shen
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Chromatin accessibility ,Transcription factor ,Seasonal reproduction ,Coturnix japonica ,Biotechnology ,TP248.13-248.65 ,Genetics ,QH426-470 - Abstract
Abstract Background In cold and temperate zones, seasonal reproduction plays a crucial role in the survival and reproductive success of species. The photoperiod influences reproductive processes in seasonal breeders through the hypothalamic-pituitary-gonadal (HPG) axis, in which the mediobasal hypothalamus (MBH) serves as the central region responsible for transmitting light information to the endocrine system. However, the cis-regulatory elements and the transcriptional activation mechanisms related to seasonal activation of the reproductive axis in MBH remain largely unclear. In this study, an artificial photoperiod program was used to induce the HPG axis activation in male quails, and we compared changes in chromatin accessibility changes during the seasonal activation of the HPG axis. Results Alterations in chromatin accessibility occurred in the mediobasal hypothalamus (MBH) and stabilized at LD7 during the activation of the HPG axis. Most open chromatin regions (OCRs) are enriched mainly in introns and distal intergenic regions. The differentially accessible regions (DARs) showed enrichment of binding motifs of the RFX, NKX, and MEF family of transcription factors that gained-loss accessibility under long-day conditions, while the binding motifs of the nuclear receptor (NR) superfamily and BZIP family gained-open accessibility. Retinoic acid signaling and GTPase-mediated signal transduction are involved in adaptation to long days and maintenance of the HPG axis activation. According to our footprint analysis, three clock-output genes (TEF, DBP, and HLF) and the THRA were the first responders to long days in LD3. THRB, NR3C2, AR, and NR3C1 are the key players associated with the initiation and maintenance of the activation of the HPG axis, which appeared at LD7 and tended to be stable under long-day conditions. By integrating chromatin and the transcriptome, three genes (DIO2, SLC16A2, and PDE6H) involved in thyroid hormone signaling showed differential chromatin accessibility and expression levels during the seasonal activation of the HPG axis. TRPA1, a target of THRB identified by DAP-seq, was sensitive to photoactivation and exhibited differential expression levels between short- and long-day conditions. Conclusion Our data suggest that trans effects were the main factors affecting gene expression during the seasonal activation of the HPG axis. This study could lead to further research on the seasonal reproductive behavior of birds, particularly the role of MBH in controlling seasonal reproductive behavior.
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- 2024
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28. Dynamic X-ray imaging with screen-printed perovskite CMOS array
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Yanliang Liu, Chaosong Gao, Dong Li, Xin Zhang, Jiongtao Zhu, Meng Wu, Wenjun Liu, Tongyu Shi, Xingchen He, Jiahong Wang, Hao Huang, Zonghai Sheng, Dong Liang, Xue-Feng Yu, Hairong Zheng, Xiangming Sun, and Yongshuai Ge
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Science - Abstract
Abstract High performance X-ray detector with ultra-high spatial and temporal resolution are crucial for biomedical imaging. This study reports a dynamic direct-conversion CMOS X-ray detector assembled with screen-printed CsPbBr3, whose mobility-lifetime product is 5.2 × 10−4 cm2 V–1 and X-ray sensitivity is 1.6 × 104 µC Gyair –1 cm–2. Samples larger than 5 cm $$\times$$ × 10 cm can be rapidly imaged by scanning this detector at a speed of 300 frames per second along the vertical and horizontal directions. In comparison to traditional indirect-conversion CMOS X-ray detector, this perovskite CMOS detector offers high spatial resolution (5.0 lp mm−1) X-ray radiographic imaging capability at low radiation dose (260 nGy). Moreover, 3D tomographic images of a biological specimen are also successfully reconstructed. These results highlight the perovskite CMOS detector’s potential in high-resolution, large-area, low-dose dynamic biomedical X-ray and CT imaging, as well as in non-destructive X-ray testing and security scanning.
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- 2024
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29. DEPDet: A Cross-Spatial Multiscale Lightweight Network for Ship Detection of SAR Images in Complex Scenes
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Jing Zhang, Fan Deng, Yonghua Wang, Jie Gong, Ziyang Liu, Wenjun Liu, Yinmei Zeng, and Zeqiang Chen
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Complex scenes ,cross-spatial multiscale convolution (CSMSConv) ,lightweight network ,multiscale ships ,synthetic aperture radar (SAR) ,Ocean engineering ,TC1501-1800 ,Geophysics. Cosmic physics ,QC801-809 - Abstract
Nowadays, the intricate nature of synthetic aperture radar (SAR) ship scenes, coupled with the presence of multiscale targets, poses a significant challenge in detection accuracy. Furthermore, to reduce the financial outlay on hardware, there is also a considerable challenge in lightweighting the model. In order to resolve the aforementioned concerns, we propose a cross-spatial multiscale lightweight network, designated as DEPDet. First, a new efficient multiscale detection backbone network DEMNet is redesigned. To improve the feature extraction capability of the network, a cross-spatial multiscale convolution (CSMSConv) is designed and a new CSMSConv module CSMSC2F is constructed. Meanwhile, we introduce an efficient multiscale attention module. DEMNet is capable of more effectively extracting information pertaining to multiscale ships. Moreover, to enhance the fusion of features at diverse scales, we design a new path aggregation feature pyramid network DEPAFPN, which combines deformable convolution and CSMSC2F. Finally, we introduce partial convolution to construct a lightweight detection head module PCHead, which can be employed to extract spatial features with greater efficiency. The publicly available SAR ship datasets, SAR Ship Detection Dataset and High-Resolution SAR Image Dataset, are employed for the purpose of conducting experiments. The mean average precision (mAP) obtained was 98.2% (+1.4%) and 91.6% (+1.6%), respectively. The F1 obtained 0.950 (+1.7%) and 0.871 (+1.4%), respectively. Concurrently, the Params decreased from 3.2M to 2.1M, a decrease of approximately 34%. The floating-point operations (FLOPs) decreased from 8.7G to 4.5G, a decrease of approximately 48%. The experimental results indicate that the network achieves an effective balance between detection accuracy and lightweight effect with good generalization and extensibility.
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- 2024
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30. A Hybrid Method for Identifying the Feeding Behavior of Tilapia
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Yingying Cao, Shuangyin Liu, Mingyan Wang, Wenjun Liu, Tonglai Liu, Liang Cao, Jianjun Guo, Dachun Feng, Hang Zhang, Shahbaz Gul Hassan, and Longqin Xu
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Tilapia ,deep learning ,ResNet34 ,feeding behavior ,migration learning ,CBAM ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
In aquaculture, quantifying the real-time feeding behaviour of fish is essential for making feeding decisions. However, most existing methods for assessing fish appetite are inefficient and subjective. To address these issues, this study proposes an improved tilapia feeding level classification model with ResNet34. First, we introduce the attention module CBAM into the ResNet34 model to adjust the attention of the model according to the importance of different channel features and enhance the effective extraction of important features. We then used migration learning to transfer the knowledge learned from the source data (ImageNet dataset) to the tilapia ingestion image dataset, which allowed us to train the tilapia ingestion behaviour classification model faster while retaining the pre-trained model. Experimental results showed that the improved ResNet34 model in this study achieved an accuracy of 99.72%, an improvement of 7.84 percentage points over the original model. In addition, the model outperformed models such as MobileNetV2, AlexNet, VGG11, ShuffleNet_v2_x0_5 and ResNet18 in terms of accuracy, precision, recall and F1 scores.These results suggest that the proposed method can accurately identify feeding behavior of fish and provide a scientific basis for determining feeding amounts.
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- 2024
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31. Multilevel Pyramid Feature Extraction and Task Decoupling Network for SAR Ship Detection
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Yanshan Li, Wenjun Liu, and Ruo Qi
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CenterNet ,multilevel feature pyramid ,synthetic aperture radar (SAR) image ,target detection ,Ocean engineering ,TC1501-1800 ,Geophysics. Cosmic physics ,QC801-809 - Abstract
Synthetic aperture radar (SAR) target detection plays a crucial role in both military and civilian fields, attracting significant attention from researchers globally. CenterNet, a single-stage target detection method, is known for its high detection speed and accuracy by eliminating anchor-related calculations and nonmaximum suppression. However, directly applying CenterNet to SAR ship detection poses challenges due to the distinctive characteristics of SAR images, including lower resolution, lower signal-to-noise ratio, and larger ship aspect ratios. To address these challenges, we propose MPDNet. which introduces a multilevel pyramid feature extraction module (MP-FEM) to replace the encoding–decoding structure in CenterNet. MP-FEM employs multilevel pyramid and channel compression to fuse multiscale SAR image features and acquire deep features quickly. Second, we propose the convolution channel attention module, which improves the multilayer perceptron in the common pooling attention mechanism into a multistage and 1-D convolution. Therefore, the feature extraction capability of MP-FEM is further refined. Furthermore, we propose the detection task decoupling module (DTDM), which considers the characteristics of SAR ships and effectively detects smaller targets of different sizes, distinguishing the centers and sizes of densely arranged ships. DTDM extracts task-related features from the original feature map before inputting it into the three detection headers, thereby addressing the problem of task coupling in CenterNet's detection header module for SAR ship detection. Finally, the experimental results on SSDD dataset and SAR-ship-dataset show that the proposed network can significantly improve the SAR target detection accuracy.
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- 2024
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32. The first Chinese with Hb Chile leading to chronic anemia and methemoglobinemia: a case report
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Yao Gong, Qinxin Zheng, Sili Long, Hongying Chen, Wenjun Liu, and Cheng Li
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Hemoglobin variant ,Unstable hemoglobin ,Hemoglobin Chile ,Methemoglobinemia ,anemia ,Pediatrics ,RJ1-570 - Abstract
Abstract Background Hemoglobin (Hb) Chile [β28(B10) Leu > Met; HBB: c.85 C > A] is a rare hemoglobin variant caused by a missense mutation in the HBB gene. Only one case of Hb Chile has been reported worldwide so far. It is an unstable hemoglobin, characterized by cyanosis associated with chronic methemoglobinemia and hemolytic anemia induced by sulfonamides or methylene blue. Case presentation A 9-year-3-month-old girl had mild anemia of unknown etiology for more than 6 years. She had a slight pallor without other symptoms or signs. The complete blood count revealed normocytic normochromic anemia with a sometimes-elevated reticulocyte count, and the bone marrow cytology showed marked erythroid hyperplasia, but the tests related to hemolysis were normal. Therefore, the whole exome sequencing was performed and showed a heterozygous mutation for HBB: c.85 C > A. With asymptomatic methemoglobinemia confirmed later, she was eventually diagnosed with Hb Chile. Conclusions This is the first report of Hb Chile in China and the second worldwide. This case shows that Hb Chile is clinically heterogeneous and difficult to diagnose and expands our understanding on the clinical and hematological traits of the disease.
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- 2023
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33. Adult dental epithelial stem cell-derived organoids deposit hydroxylapatite biomineral
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Hyun-Yi Kim, Victoria Cooley, Eun-Jung Kim, Shujin Li, Jong-Min Lee, Dina Sheyfer, Wenjun Liu, Ophir D. Klein, Derk Joester, and Han-Sung Jung
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Dentistry ,RK1-715 - Abstract
Abstract Ameloblasts are specialized cells derived from the dental epithelium that produce enamel, a hierarchically structured tissue comprised of highly elongated hydroxylapatite (OHAp) crystallites. The unique function of the epithelial cells synthesizing crystallites and assembling them in a mechanically robust structure is not fully elucidated yet, partly due to limitations with in vitro experimental models. Herein, we demonstrate the ability to generate mineralizing dental epithelial organoids (DEOs) from adult dental epithelial stem cells (aDESCs) isolated from mouse incisor tissues. DEOs expressed ameloblast markers, could be maintained for more than five months (11 passages) in vitro in media containing modulators of Wnt, Egf, Bmp, Fgf and Notch signaling pathways, and were amenable to cryostorage. When transplanted underneath murine kidney capsules, organoids produced OHAp crystallites similar in composition, size, and shape to mineralized dental tissues, including some enamel-like elongated crystals. DEOs are thus a powerful in vitro model to study mineralization process by dental epithelium, which can pave the way to understanding amelogenesis and developing regenerative therapy of enamel.
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- 2023
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34. Development of modified PMMA cement in spine surgery
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Zhikun Li, Junwei Shi, Yi Wang, Yifan Li, Wenjun Liu, Ruijun Xu, Silian Wang, Liwei Chen, Xiaojian Ye, Chi Zhang, and Wei Xu
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Life ,QH501-531 - Published
- 2023
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35. A machine-learning approach for prediction of hospital mortality in cancer-related sepsis
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YiRan He, YuJing Liu, YiMei Liu, HongYu He, WenJun Liu, DanLei Huang, ZhunYong Gu, and MinJie Ju
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Machine-learning ,Mortality ,Cancer-related sepsis ,Medicine - Abstract
Objective: To develop a machine learning model to predict hospital mortality and identify risk factors in cancer-related sepsis patients. Method: We obtained data from the Medical Information Mart for Intensive Care (MIMIC)-IV critical care data set, which included patients who diagnosed with cancer and fulfilled the definition of sepsis between 2008 and 2019. The data set was randomly split into a training set and a validation set. The dataset was imputed using the K-Nearest Neighbor (KNN) imputation model. An advanced machine learning model called CatBoost was established and then assessed by SHAP value. Results: A total of 5081 patients were included in the final analysis. The cancer-related sepsis patients had a lower hospital survival (13.8% vs. 25.3%, P
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- 2023
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36. Exploring the pharmacological mechanisms of Shuanghuanglian against T-cell acute lymphoblastic leukaemia through network pharmacology combined with molecular docking and experimental validation
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You Yang, Yan Yang, Yunfu Shen, Jing Liu, Yan Zeng, Chengming Wei, Chunyan Liu, Yansha Pan, Qulian Guo, Fangfang Zhong, Ling Guo, and Wenjun Liu
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T-ALL ,NOTCH1 ,apoptosis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
AbstractContext Due to the poor prognosis of T-cell acute lymphoblastic leukaemia (T-ALL), there is an urgent need to identify safer and more cost-effective drugs.Objective This study evaluated the antitumour activity of Shuanghuanglian (SHL) on T-ALL cells and elucidated the mechanism.Materials and methods Jurkat and Molt4 cells were treated with SHL (0.1, 0.2 and 0.4 mg/mL) for 24 and 48 h. The controls were treated with RPMI 1640 containing 10% foetal bovine serum. Cell viability was evaluated through Cell Counting Kit-8 assay. Patterns of death and signalling pathway alterations caused by SHL were identified by network pharmacology combined with GO enrichment analysis and then were verified by Hoechst 33342 staining, Annexin V-FITC/PI staining and Western blotting. Interactions of the active ingredients with targets were analysed by molecular docking.Results The IC50 values of SHL in Jurkat and Molt4 cells were 0.30 ± 0.10 and 0.48 ± 0.07 mg/mL, respectively, at 24 h and 0.27 ± 0.05 and 0.30 ± 0.03 mg/mL at 48 h. In T-ALL, 117 target genes of SHL were mainly enriched in the apoptosis and NOTCH signalling pathways. SHL induced apoptosis was confirmed by Hoechst 33342 staining and flow cytometry. The protein levels of cleaved caspase-7 and cleaved PARP were significantly increased but those of cleaved NOTCH1 and MYC were reduced. The active ingredients of SHL can interact with γ-secretase.Discussion and conclusions: SHL induces apoptosis in T-ALL cells via the NOTCH1-MYC pathway and may be a potential drug for the treatment of T-ALL.
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- 2023
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37. Projection-Uniform Subsampling Methods for Big Data
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Yuxin Sun, Wenjun Liu, and Ye Tian
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model-free subsampling ,space-filling design ,uniform projection criterion ,centered L2-discrepancy ,Mathematics ,QA1-939 - Abstract
The idea of experimental design has been widely used in subsampling algorithms to extract a small portion of big data that carries useful information for statistical modeling. Most existing subsampling algorithms of this kind are model-based and designed to achieve the corresponding optimality criteria for the model. However, data generating models are frequently unknown or complicated. Model-free subsampling algorithms are needed for obtaining samples that are robust under model misspecification and complication. This paper introduces two novel algorithms, called the Projection-Uniform Subsampling algorithm and its extension. Both algorithms aim to extract a subset of samples from big data that are space-filling in low-dimensional projections. We show that subdata obtained from our algorithms perform superiorly under the uniform projection criterion and centered L2-discrepancy. Comparisons among our algorithms, model-based and model-free methods are conducted through two simulation studies and two real-world case studies. We demonstrate the robustness of our proposed algorithms in building statistical models in scenarios involving model misspecification and complication.
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- 2024
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38. GENOME: Generative Neuro-Symbolic Visual Reasoning by Growing and Reusing Modules.
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Zhenfang Chen, Rui Sun, Wenjun Liu, Yining Hong, and Chuang Gan
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- 2024
39. Theoretical investigation on heats of formation, detonation properties and sensitivities of TANPy based energetic materials
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Wenjun, Liu, Xiaorui, Kang, Shuqi, Guo, Chengzhen, Qin, Xinghui, Jin, Yonggang, Wang, and Jianhua, Zhou
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- 2024
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40. Research on Evaluation Indicators of AgriVoltaics
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Liulu Fan, Xinyu Zhang, Wenjun Liu, Altyeb Ali Abaker Omer, and Wen Liu
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AgriVoltaics ,Classification ,Cost Analysis ,Evaluation Indicators ,Agriculture (General) ,S1-972 ,Renewable energy sources ,TJ807-830 - Abstract
In recent years, with the popularization of environmental protection concepts and the continuous development of new energy technologies, agrivoltaics has attracted increasing attention and become an important direction of new agricultural development as a new type of agricultural planting method and new energy utilization method. This article classifies ground-based agrivoltaic schemes into three categories according to different management and distributions of solar radiation: intensity management, spectrum management, and time management. The article also details the performance of high-quality schemes proposed by our research team for these three categories. In addition, the article proposes four evaluation indicators for agrivoltaic schemes: land equivalent ratio (LER), return on investment (ROI), water-saving performance, and crop-friendliness, and calculates the performance of different schemes proposed by our research team based on these indicators. Finally, we recommend using these four dimensions to evaluate the performance of agrivoltaic schemes.
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- 2024
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41. SCAPV Creates the Possibility of Less Irrigation and Higher Productivity
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Altyeb Ali Abaker Omer, Wen Liu, Ming Li, Fangcai Chen, Wenjun Liu, Jan Ingenhoff, Liulu Fan, Fangxin Zhang, Xinyu Zhang, Jianan Zheng, and Zhisen Zhang
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SCAPV ,Spectrum Separation ,Evapotranspiration ,Peanuts ,Soybeans ,Agriculture (General) ,S1-972 ,Renewable energy sources ,TJ807-830 - Abstract
In agrivoltaic (APV), photovoltaic (PV) panels are positioned above farmland to produce energy and food simultaneously. However, PV panels above farmland block most sunlight from reaching plants for photosynthesis. Plants require sunlight for photosynthesis. We proposed Spectrum-splitting and Concentrated APV (SCAPV) to address contradictions between photosynthesis and energy production simultaneously. This study examines the effect of SCAPV on the evapotranspiration and growth of peanuts and soybeans. Peanuts and soybeans were planted under SCAPV and open-air (CK) treatments, and a weather station was placed in each treatment. Results showed that evapotranspiration under SCAPV significantly decreased by 31% compared to CK. Thus, it improved physiological characterization, enhanced quality, and increased the yield of peanuts and soybeans. Peanuts' protein, fat, and linoleic acid increased by 5.54%, 0.28%, and 1.14% under SCAPV compared to CK. Fat, soluble sugar, linoleic acid, and alpha-linolenic acid of soybean were increased by 6.75%, 15.24%, 13.72%, and 15.14%, respectively, under SCAPV compared to CK. The average land equivalent ratio of SCAPV is 1.7. We trust that SCAPV could provide food and energy while reducing irritation on the same farmland.
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- 2024
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42. Corrigendum to 'Relationship between low relative muscle mass and aortic regional morphological changes in adults underwent contrast CT scans for cancer diagnostics' [The Journal of nutrition, health and aging 28 (2024) 100167]
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Zhijie Jian, Zixuan Meng, Guolin Yao, Hui Liu, Jian Yang, Yue Wu, Wenjun Liu, and Lele Cheng
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Internal medicine ,RC31-1245 - Published
- 2024
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43. Relationship between low relative muscle mass and aortic regional morphological changes in adults underwent contrast CT scans for cancer diagnostics
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Zhijie Jian, Zixuan Meng, Guolin Yao, Hui Liu, Jian Yang, Yue Wu, Wenjun Liu, and Lele Cheng
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Skeletal muscle ,Aorta tortuosity ,Morphology ,Computed tomography ,Internal medicine ,RC31-1245 - Abstract
Objectives: Low muscle mass is related to cardiovascular risk factors. This study aimed to investigate whether relative low muscle mass is related to the diameter and tortuosity of the aorta. Methods: We performed a cross-sectional study of 208 adults without known cardiovascular disease who underwent Computed Tomography (CT) enhanced scan between 2020 and 2021. Skeletal muscle index (SMI) was estimated. The morphology of the aorta was measured by diameter and tortuosity using CT. We assessed the relationship between SMI and diameter and tortuosity of the aorta using Spearman correlation analysis and univariate and multivariate-adjusted regression models. Results: Of all -individuals, 124 (59.6%) were male. The average age was 60.13 ± 16.33 years old. SMI was inversely associated with the diameter and tortuosity of the aorta (p
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- 2024
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44. 3D mapping of residual stresses in growing grains of partially recrystallized Gum Metal
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Adam Lindkvist, Wenjun Liu, Dorte Juul Jensen, and Yubin Zhang
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Synchrotron radiation ,residual stresses ,3D reconstruction ,recrystallization ,Gum metal ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
The crystallographic orientations and residual stresses within recrystallizing grains in partially recrystallized β titanium—Gum Metal—were examined non-destructively in 3D using synchrotron Differential Aperture X-ray Microscopy. Contrary to common assumptions, significant local stresses and stress variations are observed within the recrystallizing grains. The results reveal that the development of these local residual stresses depends on the plastic deformation mode and material’s elastic constants, rather than grain properties such as size and orientation, or even the material’s yield stress. This work provides insights valuable for the design of advanced materials with heterogeneous microstructures.
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- 2023
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45. Hot-deformation kinetics analysis and extrusion parameter optimization of a dilute rare-earth free magnesium alloy
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Qinghang Wang, Haowei Zhai, Zhaoyang Jin, Junjie He, Qin Yang, Wenjun Liu, Yulong Li, and Daolun Chen
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Mg-Al-Ca-Mn alloy ,Constitutive model ,Dynamic recrystallization kinetic model ,Extrusion parameter optimization ,Strengthening-plasticizing mechanisms ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The fundamental research on thermo-mechanical conditions provides an experimental basis for high-performance Mg-Al-Ca-Mn alloys. However, there is a lack of systematical investigation for this series alloys on the hot-deformation kinetics and extrusion parameter optimization. Here, the flow behavior, constitutive model, dynamic recrystallization (DRX) kinetic model and processing map of a dilute rare-earth free Mg-1.3Al-0.4Ca-0.4Mn (AXM100, wt.%) alloy were studied under different hot-compressive conditions. In addition, the extrusion parameter optimization of this alloy was performed based on the hot-processing map. The results showed that the conventional Arrhenius-type strain-related constitutive model only worked well for the flow curves at high temperatures and low strain rates. In comparison, using the machine learning assisted model (support vector regression, SVR) could effectively improve the accuracy between the predicted and experimental values. The DRX kinetic model was established, and a typical necklace-shaped structure preferentially occurred at the original grain boundaries and the second phases. The DRX nucleation weakened the texture intensity, and the further growth caused the more scattered basal texture. The hot-processing maps at different strains were also measured and the optimal hot-processing range could be confirmed at the deformation temperatures of 600∼723 K and the strain rates of 0.018∼0.563 s−1. Based on the optimum hot-processing range, a suitable extrusion parameter was considered as 603 K and 0.1 mm/s and the as-extruded alloy in this parameter exhibited a good strength-ductility synergy (yield strength of ∼ 232.1 MPa, ultimate strength of ∼ 278.2 MPa and elongation-to-failure of ∼ 20.1%). Finally, the strengthening-plasticizing mechanisms and the relationships between the DRXed grain size, yield strength and extrusion parameters were analyzed.
- Published
- 2023
- Full Text
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46. Can Functional Micro-organisms Associated with Pumpkin Sizes Be Sought Out from the Soil?—A Comparison of Soil Microbial Community Structures in Rhizospheres between Giant- and Small-Sized Pumpkin Varieties
- Author
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Yu Zhu, Xinyan Zhou, Jiaoming Li, Junqian Feng, Ziyue Huang, Baoling Chen, Wenjun Liu, and Shangdong Yang
- Subjects
pumpkin ,soil microbial community structure ,rhizosphere ,yield ,functional microorganisms ,Botany ,QK1-989 - Abstract
To elucidate the biological mechanisms driving the growth of various pumpkin varieties to different sizes under identical management conditions while in the same field, the soil microbial community structures in the rhizospheres of giant-pumpkin (GP) and small-pumpkin (SP) varieties were analyzed. The results revealed that a significantly higher abundance of bacterial communities could be detected in the rhizospheres of the giant pumpkin varieties, such as Gemmatimonadota, norank__f__norank__o_Gaiellales, norank__f__Gemmatimonadaceae, Bryobacter, Sphingomonas, norank__f__JG30-KF-AS9, and norank__f__norank__o___Elsterales, than in those of the small-sized pumpkins. Additionally, norank_f__norank_o__Elsterale, Ellin6067, norank_f__67-14, and Chujaibacter were unique dominant soil bacteria genera in the rhizospheres of the giant pumpkins. By contrast, Arthrobacter, norank_f__Roseiflexaceae, unclassified_f__Rhizobiaceae, Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium, Nocardioides, Mycobacterium, norank_f__norank_o__Vicinamibacterales, and Burkholderia-Caballeronia-Paraburkholderia were the unique dominant soil bacterial genera in the rhizospheres of the small pumpkins. Moreover, at the fungal genus level, unclassified_c__Chytridiomycetes, Podosphaera, and Colletotrichum presented significant differences between the giant-pumpkin (GP) and small-pumpkin (SP) rhizospheres. In addition, unclassified__p__Rozellomycota, unclassified__c__Chytridiomycetes, Penicillium, and unclassified__f__Chaetomiaceae were unique dominant soil fungal genera in the rhizospheres of the giant pumpkins (GPs). By contrast, Podosphaera, Colletotrichum, unclassified__f__Plectosphaerellaceae, unclassified__o_Boletales, Scytalidium, unclassified__p__Rozellomycota, and unclassified__o_Agaricales were the unique dominant soil fungal genera in the rhizospheres of the small pumpkins (SPs). PICRUSt and FUNGuild functional prediction analyses revealed that the giant-pumpkin rhizosphere microbial community had significantly increased translation, ribosomal structure and biogenesis, nucleotide transport and metabolism, defense mechanisms, replication, recombination and repair, wood saprotroph, and undefined saprotroph levels. The above results suggest that the soil microbial compositions differed between the rhizospheres of the giant- (GP) and small-pumpkin (SP) varieties, even though the plants were grown in the same field under identical management conditions. Meanwhile, bacterial genera such as norank_f__norank_o__Elsterale, Ellin6067, norank_f__67-14, and Chujaibacter, in addition to fungal genera such as unclassified__p__Rozellomycota, unclassified__c__Chytridiomycetes, Penicillium, and unclassified__f__Chaetomiaceae, can be speculated as potential soil functional micro-organisms associated with improved pumpkin size.
- Published
- 2024
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47. Comparative Genomics of Limosilactobacillus pontis Strains: Niche-Specific Variations and Adaptations
- Author
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Xueyan Lei, Qing Liu, Weicheng Li, Yu Li, Lixia Zhao, and Wenjun Liu
- Subjects
Limosilactobacillus pontis ,comparative genomics ,niche adaptability ,Biology (General) ,QH301-705.5 - Abstract
Limosilactobacillus pontis (L. pontis) is a species of lactic acid bacteria (LAB) found in various products, including fermented milk, sourdough, and broiler chickens’ gastrointestinal tracts. However, the evolutionary strategies and genomic features of the species remain unknown, which limits its application. In this study, whole-genome sequencing was carried out to investigate the genomic characteristics and evolutionary strategies of L. pontis, combined with a comparative genomic approach, providing the necessary theoretical basis for its application. The genomic sequences in this study included three published genomic sequences and two strains isolated from fermented milk in our lab in Inner Mongolia, China. The mean genome size of the five L. pontis strains was 1.70 Mb, and the mean DNA G + C content was 53.06%. L. pontis was a species with higher G + C content in LAB. The phylogenetic evolutionary tree for the core genes showed that the strains from the same sources were aggregated into a cluster. There were some differences in the genomic information and phylogenetic relationships amongst L. pontis from different sources. An analysis of the annotation results identified differences in the functional genes, carbohydrate-active enzymes, and bacteriocins amongst different isolated strains, which were related to the environment. L. pontis was rich in glycosyltransferases, especially in strains isolated from fermented milk, indicating that they had higher sugar synthesis abilities. It is worth mentioning that only the L. pontis strains isolated in our laboratory identified the bacteriocin operon, which may increase its application potential. The genomic characteristics and evolutionary process of L. pontis were analyzed by comparative genomics, and this study explored the differences in the functional genes amongst the strains, aiming to provide new insights into the genetic characteristics and niche adaptations of L. pontis.
- Published
- 2024
- Full Text
- View/download PDF
48. Simulation Study on Tunable Terahertz Bandpass Filter Based on Metal–Silicon–Metal Metasurface
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Wenjun Liu and Jitao Li
- Subjects
terahertz ,bandpass filter ,tunable metasurface ,Applied optics. Photonics ,TA1501-1820 - Abstract
Metasurface devices have demonstrated powerful electromagnetic wave manipulation capabilities. By adjusting the shape and size parameters of the metasurface microstructure, we can control the resonance between spatial electromagnetic waves and the metasurface, which will trigger wave scattering at a specific frequency. By utilizing these characteristics, we design a metasurface device with a bandpass filtering function and a unit cell of the metasurface consisting of a double-layer pinwheel-shaped metal structure and high resistance silicon substrate (forming metal–silicon–metal configuration). A bandpass filter operating in the terahertz band has been implemented, which achieves a 36 GHz filtering bandwidth when the transmission amplitude decreases by 3 dB and remains effective in a wave incidence angle of 20°. This work uses an equivalent RC resonance circuit to explain the formation of bandpass filtering. In addition, the photosensitive properties of silicon enable the filtering function of the device to have on/off tuned characteristics under light excitation, which enhances the dynamic controllability of the filter. The designed device may have application prospects in 6G space communication.
- Published
- 2024
- Full Text
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49. A 1.6 kV Ga2O3 Schottky Barrier Diode with a Low Reverse Current of 1.2 × 10−5 A/cm2 Enabled by Field Plates and N Ion-Implantation Edge Termination
- Author
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Xinlong Zhou, Jining Yang, Hao Zhang, Yinchi Liu, Genran Xie, and Wenjun Liu
- Subjects
β-Ga2O3 ,Schottky barrier diode ,field plate ,N ion implantation ,breakdown voltage ,Chemistry ,QD1-999 - Abstract
In this work, by employing field plate (FP) and N ion-implantation edge termination (NIET) structure, the electrical performance of the β-Ga2O3 Schottky barrier diode (SBD) was greatly improved. Ten samples of vertical SBDs were fabricated to investigate the influence of the relative positions of field plates (FPs) and ion implantation on the device performance. The device with the FP of 15 μm and the ion implantation at the edge of the Schottky electrode exhibited a breakdown voltage (Vbr) of 1616 V, a specific on-resistance (Ron,sp) of 5.11 mΩ·cm2, a power figure of merit (PFOM) of 0.511 GW/cm2, and a reverse current density of 1.2 × 10−5 A/cm2 @ −1000 V. Compared to the control device, although the Ron,sp increased by 1 mΩ·cm2, the Vbr of the device increased by 183% and the PFOM increased by 546.8%. Moreover, the reverse leakage current of the device with the FP and NIET structure decreased by three orders of magnitude. The TCAD simulation revealed that the peak electric field at the interface decreased from 7 MV/cm @ −500 V to 4.18 MV/cm @ −1000 V. These results demonstrate the great potential for the β-Ga2O3 SBD with a FP and NIET structure in power electronic applications.
- Published
- 2024
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50. Variable Weight Model Predictive Contour Control for Autonomous Tracking Based on Reinforcement Learning and Nonlinear Disturbance Observer.
- Author
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Rui Dai, Wenjun Liu, Zhenshan Bing, and Alois Knoll
- Published
- 2023
- Full Text
- View/download PDF
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