119 results on '"Chunquan Liu"'
Search Results
2. Hot deformation behaviors of titanium particles reinforced AZ91 composite
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Jianbo Li, Xu Chen, Yitao Wang, Huan Luo, Bo Guan, Chunquan Liu, Kaihong Zheng, and Fusheng Pan
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Biomaterials ,Metals and Alloys ,Ceramics and Composites ,Surfaces, Coatings and Films - Published
- 2023
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3. HIF-1α/IL-8 axis in hypoxic macrophages promotes esophageal cancer progression by enhancing PD-L1 expression
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Shuai Song, Yahui Zhang, Xinchun Duan, Chunquan Liu, Yanlin Du, Xiaoran Wang, Yi Luo, and Yong Cui
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Cancer Research ,Molecular Medicine ,Molecular Biology - Abstract
Esophageal cancer (EC) is a malignancy with poor prognosis and high mortality. Hypoxic microenvironment has also been proved to be an important feature of tumors. Herein, we mainly studied the influence of hypoxia-treated tumor-associated macrophages (TAMs) on EC malignant phenotype and related molecular mechanism. In this paper, we found that hypoxic macrophages contributed to EC cell proliferation, cell cycle progression, and metastasis. Besides, the hypoxia treatment expedited the transformation of macrophages into M2 polarization. The level of interleukin (IL)-8 was boosted in macrophages after hypoxia treatment. Moreover, hypoxia treatment heightened IL-8 secretion by macrophages via positively regulating hypoxia-inducible factor-1α (HIF-1α) expression. The IL-8 secreted by hypoxic macrophages facilitated EC cell proliferation, cell cycle progression, and metastasis by elevating ligand of programmed death 1 (PD-L1) expression. In the end, IL-8 also expedited EC tumorigenesis in vivo. In conclusion, HIF-1α/IL-8 axis in hypoxic macrophages could expedite EC advancement by upregulating PD-L1 level, which might deliver a novel thought for EC cure.
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- 2022
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4. Microstructure and mechanical properties of gradient ultrafine-grained Mg-Gd-Zr alloy
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Chunquan Liu, Xianhua Chen, Yaobo Hu, Wei Zhang, Yusheng Zhang, Jianbo Li, and Fusheng Pan
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Biomaterials ,Metals and Alloys ,Ceramics and Composites ,Surfaces, Coatings and Films - Published
- 2022
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5. Circ_0001821 Affects Proliferation and the Cell Cycle in Esophageal Squamous Cell Carcinoma by Elevating BTRC-Mediated IKBA Ubiquitination
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Changjin Lin, Yujun Wei, Xinchun Duan, Chunquan Liu, Yanlin Du, Xiaoran Wang, Yi Luo, and Yong Cui
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Cancer Research ,Esophageal Neoplasms ,Cell Cycle ,NF-kappa B ,Ubiquitination ,RNA, Circular ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,Oncology ,Cell Line, Tumor ,Humans ,Esophageal Squamous Cell Carcinoma ,Neoplasm Recurrence, Local ,Molecular Biology ,Cell Proliferation - Abstract
Esophageal squamous cell carcinoma (ESCC) is a fatal human cancer featured with a tendency to metastasis and relapse. Increasing studies have emphasized the critical roles of circular RNAs (circRNA) in ESCC. This study targeted at a novel circRNA and uncovering its function and mechanisms in ESCC. Functional assays were implemented to evaluate proliferation and cell cycle of ESCC cells. Mechanistic analyses were conducted to explore the potential molecular mechanisms in ESCC cells. In vivo assay was also performed. Based on the collected data, circ_0001821 was highly expressed in ESCC cells. Circ_0001821 knockdown retarded ESCC cell proliferation and tumor growth, while promoting G2–M cell cycle arrest. With regard to its mechanism, RUNX3 promoted PVT1 transcription, further upregulating circ_0001821. Moreover, circ_0001821 sponged miR-423–5p to upregulate BTRC, thus promoting IKBA ubiquitination, and circ_0001821 decreased IKBA expression to activate NF-κB signaling pathway. Rescue assays demonstrated that circ_0001821 facilitated ESCC cell proliferation and cell cycle by downregulating IKBA. In summary, RUNX3-induced circ_0001821 switches on NF-κB signaling pathway via diminishing IKBA expression, functionally prompting ESCC cell proliferation and cell cycle. Implications: This study uncovered a novel molecular pathway in ESCC progression, which might provide potential biomarkers for ESCC diagnosis.
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- 2022
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6. Association of optic nerve sheath lesion and brain or meningeal metastasis caused by lung cancer
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Shuai Song, Dong Chang, Hao Li, Chunquan Liu, Yong Cui, and Hongyang Li
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Pulmonary and Respiratory Medicine ,Lung Neoplasms ,Oncology ,Brain ,Humans ,Optic Nerve ,General Medicine ,Lung ,Meningeal Carcinomatosis ,Retrospective Studies - Abstract
With the development of imaging, the etiology of ocular lesions caused by lung cancer was not found only intraocular. Neuro-ophthalmological imaging has been found to be useful for the diagnosis of meningeal carcinomatosis, although few studies have previously been published. Our study used magnetic resonance imaging (MRI) to determine if there was a the relationship between ocular symptoms and lung cancer metastasis.We carried out a retrospective analysis which included patients with ocular lesions and lung cancer on which orbit MRI was performed together with ocular examination during January 2014 to January 2022. Here, we describe the characteristics of intraocular metastasis and optic nerve sheath lesions.A total of 21 lung cancer patients had ocular lesions, of which eight cases had choroidal metastasis; a further eight patients had optic nerve sheath lesions. There was one case (12.5%) of choroidal metastasis with brain or meningeal metastasis, and eight cases (100%) with optic nerve sheath lesions with brain or meningeal metastasis. A total of 75.0% patients with choroidal metastasis did not have any history of known lung cancer, and 25.0% of optic nerve sheath lesions in patients were found before a meningeal metastasis diagnosis. The features of optic nerve sheath lesions included thickening and strengthening of the long segment of the orbital optic nerve sheath with a clear boundary.The pathway of choroidal and optic nerve sheath lesions was different. Optic nerve sheath lesions were associated with brain and meningeal metastasis. When lung cancer-induced meningeal metastasis is suspected, orbital MRI is recommended to assist in the diagnosis.
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- 2022
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7. Integrated metabolic and immune profiling analysis reveals distinct prognostic signatures for neoadjuvant immunotherapy in locally advanced esophageal cancer
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Yuting Lu, Chunquan Liu, Haiqing Zhao, Yin Dong, Zhihao He, Shuai Song, Yong Cui, Jiangtao Jin, Ji Wang Wang, Hongzhong Li, and Qin Li
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Background There is an unmet demand for non-invasive biomarker assays to identify patients benefiting from neoadjuvant immune checkpoint inhibitors (ICIs). Here, we aimed to characterize the composition and alterations in plasma metabolites and peripheral blood immune cell subtypes associated with neoadjuvant ICI efficacy in locally advanced esophageal cancer (LAEC) and to investigate potential novel therapeutic targets and non-invasive biomarkers for predicting ICI efficacy. Methods 89 patients with LAEC treated with neoadjuvant programmed cell death 1 blockade combined with chemotherapy were included in this study. We performed an untargeted metabolomic analysis of 606 metabolites on 72 plasma samples using high-performance liquid chromatography-mass spectrometry and an immune profiling analysis of 9 immune cell subtypes on 33 peripheral blood mononuclear-cell samples using flow cytometry. Furthermore, we conducted correlation network and pathway enrichment analyses for potentially beneficial and pathogenic metabolites to explore the metabolite-mediated ICI responses. Finally, a metabolite-based prediction model was established using the least absolute shrinkage and selection operator regression analysis. Results Comparative metabolomics revealed that pyrimidine and purine metabolic pathways were disturbed in ICI non-responders, with significant enrichment of dihydrothymidine, ureidoisobutyric acid, and deoxyadenosine, which were significantly associated with poor survival. Conversely, jasmonic acid increased dramatically in responders and was significantly associated with better survival. Strikingly, tryptophan metabolism intermediate-indole-3-acetic acid and arachidonic acid metabolism intermediate-16(R)-HETE levels were positively correlated with cytotoxic T lymphocyte levels but inversely correlated with polymorphonuclear-myeloid-derived suppressor cells levels, which were markedly associated with a favorable prognosis. Notably, the area under the receiver operating curve for the metabolite-based model predicting 12-month overall survival was 87.7% and 82.6% in the discovery and validation cohorts, respectively, demonstrating promising performance. Conclusions Our work identified potential non-invasive biomarkers based on plasma metabolic signatures for predicting neoadjuvant ICI responses and prognosis in patients with LAEC, which provides novel insight into ICI precision medicine in the management of LAEC.
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- 2023
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8. Supplementary Figure from Circ_0001821 Affects Proliferation and the Cell Cycle in Esophageal Squamous Cell Carcinoma by Elevating BTRC-Mediated IKBA Ubiquitination
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Yong Cui, Yi Luo, Xiaoran Wang, Yanlin Du, Chunquan Liu, Xinchun Duan, Yujun Wei, and Changjin Lin
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Supplementary Figure from Circ_0001821 Affects Proliferation and the Cell Cycle in Esophageal Squamous Cell Carcinoma by Elevating BTRC-Mediated IKBA Ubiquitination
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- 2023
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9. Data from Circ_0001821 Affects Proliferation and the Cell Cycle in Esophageal Squamous Cell Carcinoma by Elevating BTRC-Mediated IKBA Ubiquitination
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Yong Cui, Yi Luo, Xiaoran Wang, Yanlin Du, Chunquan Liu, Xinchun Duan, Yujun Wei, and Changjin Lin
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Esophageal squamous cell carcinoma (ESCC) is a fatal human cancer featured with a tendency to metastasis and relapse. Increasing studies have emphasized the critical roles of circular RNAs (circRNA) in ESCC. This study targeted at a novel circRNA and uncovering its function and mechanisms in ESCC. Functional assays were implemented to evaluate proliferation and cell cycle of ESCC cells. Mechanistic analyses were conducted to explore the potential molecular mechanisms in ESCC cells. In vivo assay was also performed. Based on the collected data, circ_0001821 was highly expressed in ESCC cells. Circ_0001821 knockdown retarded ESCC cell proliferation and tumor growth, while promoting G2–M cell cycle arrest. With regard to its mechanism, RUNX3 promoted PVT1 transcription, further upregulating circ_0001821. Moreover, circ_0001821 sponged miR-423–5p to upregulate BTRC, thus promoting IKBA ubiquitination, and circ_0001821 decreased IKBA expression to activate NF-κB signaling pathway. Rescue assays demonstrated that circ_0001821 facilitated ESCC cell proliferation and cell cycle by downregulating IKBA. In summary, RUNX3-induced circ_0001821 switches on NF-κB signaling pathway via diminishing IKBA expression, functionally prompting ESCC cell proliferation and cell cycle.Implications:This study uncovered a novel molecular pathway in ESCC progression, which might provide potential biomarkers for ESCC diagnosis.
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- 2023
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10. A longitudinal study on the impact of parental academic support and expectations on students’ academic achievement: the mediating role of happiness
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Guanjun Li, Bingcan Li, Lei Wang, Chunquan Liu, and Li Lu
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Developmental and Educational Psychology ,Education - Published
- 2022
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11. Ultrasound-assisted enzymatic extraction of soluble dietary fiber from fresh corn bract and its physio-chemical and structural properties
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Ningning Geng, Jiangfeng Song, Shuwei Luo, Ying Li, Gang Wu, Chunquan Liu, and Caie Wu
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Agronomy and Crop Science ,Food Science - Abstract
The soluble dietary fiber from fresh corn bract (FCB-SDF) was extracted by ultrasonic-assisted cellulase method. The process parameters of FCB-SDF were optimized by Box–Behnken design (BBD), and the physio-chemical properties and structure of FCB-SDF obtained were investigated. The results showed that the optimal extraction conditions for FCB-SDF were enzyme concentration 1.58%, ultrasonic power 300 W, and extraction time 90 min. Under the above conditions, the FCB-SDF yield reached 21.21%. Compared with ultrasonic treatment group (U-SDF) and enzymatic treatment group (E-SDF), ultrasound-assisted enzymatic treatment group (UE-SDF) had higher WHC and OHC, but lower WSC. Its particle size was smaller, and a more microscopic pore structure was formed. UE-SDF had a low molecular weight of 204.41 KDa, and its monosaccharide composition had the highest arabinose content, followed by glucose. The SDFs obtained might be mainly composed of pectin and hemicellulose, E-SDF and UE-SDF contained more hemicellulose, and U-SDF contained more pectin.
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- 2022
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12. Improved Corrosion Resistance of Ultrafine-Grained Mg-Gd-Zr Alloy Fabricated by Surface Friction Treatment
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Chunquan Liu, Xianhua Chen, Yulong Wu, Yaobo Hu, Wei Zhang, Yusheng Zhang, Jingying Bai, and Fusheng Pan
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Metals and Alloys ,Industrial and Manufacturing Engineering - Published
- 2023
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13. Application of optic neuro‐ophthalmology imaging in latent meningeal metastases of lung cancer
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Yong Cui, Hao Li, Chunquan Liu, Hongyang Li, Dong Chang, and Shuai Song
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,genetic structures ,Case Report ,Case Reports ,Magnetic resonance angiography ,Neuro-ophthalmology ,Neuroimaging ,Paralysis ,medicine ,Papilledema ,Lung cancer ,RC254-282 ,optical coherence tomography ,medicine.diagnostic_test ,Lumbar puncture ,business.industry ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Magnetic resonance imaging ,General Medicine ,optic nerve sheath ,medicine.disease ,eye diseases ,latent intracranial dural metastasis ,lung cancer ,Oncology ,optic neuro‐ophthalmology imaging ,Radiology ,sense organs ,medicine.symptom ,business - Abstract
Latent intracranial meningeal metastases (IMM) of lung cancer is difficult to determine, yet it is critical to do so given that it impacts the treatment agent. Studies on this disease are rare, thus necessitating further investigation. As a case study, we will explore the application of optic neuroimaging in IMM. A 62‐year‐old female patient was diagnosed with lung adenocarcinoma, which had progressed to osseous metastasis. During the course of chemotherapy, the patient had bilateral vision loss and paralysis of extraocular muscles. Ophthalmologists ruled out disease of the retina and suspected intracranial metastasis; however, brain‐enhanced magnetic resonance angiography and magnetic resonance venography were normal. Given the patient's severe osteoarthropathy and poor physical condition, she refused to undergo a lumbar puncture examination. Optic neuro‐ophthalmology imaging was ultimately used. Utilizing optical coherence tomography, we found that the basement membrane layer in the papilledema was protruding up towards the vitreous cavity. To assist in visualization, the optic nerve sheath was enhanced with optic magnetic resonance imaging. With these methods, the dural metastasis was identified, the treatment agent was changed for the patient, and she had a successful recovery. Thus, optic neuro‐ophthalmology imaging should be recommended for patients who are in the latent course of dural metastasis, and it could also be used to evaluate therapeutic efficacy., Latent metastasis of lung cancer is difficult to determine, and to date there have been few studies exploring a new method for diagnosis. Here we present an elderly patient with lung cancer combined with latent intracranial meningeal metastases (IMM). Although her brain imaging was normal, lumbar puncture could not be conducted. Hence, optic neuro‐ophthalmology imaging was used to identify the IMM. To our knowledge, this is the first study concerning enhancement of optic nerve sheath will appear in meningeal metastases.
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- 2021
14. Thermal Resistance Measurements Method for Press-pack Power Devices
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Haitao Zhang, Liu Yang, Qiong Yu, Jun Wen, and Chunquan Liu
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- 2022
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15. Altered age-hardening behavior in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment
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Fusheng Pan, Yusheng Zhang, Yuan Yuan, Chunquan Liu, Wei Zhang, and Xianhua Chen
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Diffraction ,Materials science ,Polymers and Plastics ,Precipitation (chemistry) ,Mechanical Engineering ,Alloy ,Metals and Alloys ,02 engineering and technology ,engineering.material ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Indentation hardness ,0104 chemical sciences ,Precipitation hardening ,Mechanics of Materials ,Transmission electron microscopy ,Materials Chemistry ,Ceramics and Composites ,engineering ,Surface layer ,Composite material ,Dislocation ,0210 nano-technology - Abstract
To gain insight into the ageing behavior of ultrafine grain (UFG) structure, the precipitation phenomena and microstructural evolutions of Mg-6Zn-1Y-0.4Ce-0.5 Zr (wt.%) alloy processed by sliding friction treatment (SFT) were systematically studied using hardness texting, transmission electron microscopy (TEM) equipped with high-angle annular dark-field scanning (HADDF-STEM), X-ray diffraction (XRD) and XRD line broadening analysis. The microhardness of the SFT-processed (SFTed) sample initially decreases from 109.6 HV to 104.8 HV at ageing for 8 h, and then increases to the peak-ageing point of 115.4 HV at 16 h. Subsequently, it enters the over-aged period. The un-SFTed sample, as the counterpart, follows a regular ageing behavior that increases from 89.9 HV to 99.6 HV when ageing for 12 h, and then drops. A multi-mechanistic model is established to describe the strengthening due to grain refinement, dislocation accumulation, precipitation etc. The analysis reveals that the temperature sensitive UFG structure has an obvious grain coarsening effect, which arouses the soft phenomenon in the early ageing stage. But precipitation hardening provides an excellent hardness enhancement for overcoming the negative influence and helping to reach the peak-aged point. In our microstructural observations, a lot of equilibrium ultrafine MgZn2 precipitates precipitate along dislocations because defects can provide the favorable conditions for the migration and segregation of solute atoms.
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- 2021
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16. DDX10 promotes human lung carcinoma proliferation by U3 small nucleolar ribonucleoprotein IMP4
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Yanlin Du, Xinchun Duan, Xiaoran Wang, Jizheng Tang, Chunquan Liu, and Yong Cui
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Lung Neoplasms ,DDX10 ,Mice, Nude ,Transfection ,Small hairpin RNA ,DEAD-box RNA Helicases ,03 medical and health sciences ,Mice ,0302 clinical medicine ,In vivo ,Ribonucleoproteins, Small Nucleolar ,medicine ,Animals ,Humans ,Lung cancer ,DEAD/H box RNA helicases ,RC254-282 ,Cell Proliferation ,U3 small nucleolar ribonucleoprotein ,A549 cell ,Gene knockdown ,business.industry ,IMP4 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,General Medicine ,Original Articles ,medicine.disease ,RNA Helicase A ,lung cancer ,030104 developmental biology ,Oncology ,Apoptosis ,030220 oncology & carcinogenesis ,Cancer cell ,Cancer research ,Original Article ,Female ,business - Abstract
Background Lung cancer is a common tumor and a leading cause of death worldwide. DEAD/H box RNA helicases (DDX) include several family members which regulate mRNA translation in cancer cells. In this study, we demonstrated that DEAD/H box RNA helicase 10 (DDX10) was significantly upregulated in lung cancer tissues compared with adjacent nontumor tissues. Methods DDX10 expression was knocked down with shRNA in order to investigate the impact on A549 lung cancer cell growth and related molecular mechanisms in vitro and in vivo. DDX10 expression in lung cancer was assessed using online databases and patient samples. Results DDX10 knockdown significantly inhibited the proliferation of lung cancer cells in vitro and in vivo. Furthermore, the bioinformatic tool indicated the putative downstream protein U3 small nucleolar ribonucleoprotein 4 (IMP4). Our data showed a positive correlation between IMP4 and DDX10. We found that IMP4 overexpression could reverse the effect of DDX10 knockdown on the proliferation and apoptosis of A549 cells. Conclusions The findings of this study suggest that DDX10/IMP4 might be a novel target for lung cancer diagnosis and treatment., DEAD/H box RNA helicase 10 (DDX10) is significantly upregulated in lung cancer. DDX10 knockdown significantly inhibited the proliferation of lung cancer cells in vitro and in vivo. IMP4 overexpression could reverse the effect of DDX10 knockdown on the proliferation and apoptosis of lung cancer cells.
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- 2021
17. The effects of Ca and Mn on the microstructure, texture and mechanical properties of Mg-4 Zn alloy
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Andrej Atrens, Jiao Chen, Chunquan Liu, Fusheng Pan, and Xianhua Chen
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Materials science ,Alloy ,Particle-stimulated nucleation ,Nucleation ,Dynamic recrystallization ,Mechanical properties ,02 engineering and technology ,Mg–Zn–Ca–Mn alloy ,engineering.material ,01 natural sciences ,0103 physical sciences ,Ultimate tensile strength ,Texture (crystalline) ,Texture ,Composite material ,Ductility ,Grain boundary strengthening ,010302 applied physics ,Mining engineering. Metallurgy ,Metals and Alloys ,TN1-997 ,021001 nanoscience & nanotechnology ,Microstructure ,Mechanics of Materials ,engineering ,0210 nano-technology - Abstract
The microstructural evolution, texture and mechanical properties of nine Mg-4Zn-xCa-yMn alloys (x = 0.3, 0.6, 1.0; y = 0.2, 0.3, 0.7 wt.%) were investigated systematically. Alloying with Ca and Mn refined the grains of the extruded sheets and increased the unDRX fraction. Mn could be the heterogeneous nucleation site of Ca2Mg6Zn3 phase because of a good atom matching at the orientation relationship of ( 2 ¯ 1 ¯ 1 ¯ ) Mn//(1 2 ¯ 11)Ca2Mg6Zn3, 〈 2 ¯ 5 1 ¯ 〉 Mn//〈1103〉Ca2Mg6Zn3. The traditional texture weakening effect of Ca was strongly decreased for the simultaneously addition of Mn. With increasing Ca and Mn concentration, the strength increased and ductility decreased. Mg-4Zn-0.6Ca-0.7Mn exhibited a good combination of ultimate tensile strength (320 MPa), yield strength (286 MPa) and elongation (16%). A model of strengthening indicated that grain boundary strengthening and precipitate strengthening made a large contribution to the strength of Mg-4Zn-0.6Ca-0.7Mn. In addition, the dynamic recrystallization, texture modification and the strengthening effect from different parts also have been analyzed in detail.
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- 2021
18. MiR‐155 promotes colitis‐associated intestinal fibrosis by targeting HBP1/Wnt/β‐catenin signalling pathway
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Zhenhua Zhu, Nianshuang Li, Zhenxiang Yuan, Yaobin Ouyang, Chunquan Liu, and Xinbo Xu
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Male ,0301 basic medicine ,Apoptosis ,Wnt1 Protein ,Inflammatory bowel disease ,miR-155 ,Mice ,03 medical and health sciences ,0302 clinical medicine ,miR‐155 ,In vivo ,Intestinal Stricture ,HBP1 ,intestinal fibrosis ,Animals ,Humans ,Medicine ,Colitis ,Cells, Cultured ,beta Catenin ,Cell Proliferation ,Mice, Inbred BALB C ,Crohn's disease ,business.industry ,High Mobility Group Proteins ,Wnt/β‐catenin signalling pathway ,Wnt signaling pathway ,Original Articles ,Cell Biology ,Prognosis ,medicine.disease ,Fibrosis ,Hedgehog signaling pathway ,Repressor Proteins ,Intestinal Diseases ,MicroRNAs ,030104 developmental biology ,Gene Expression Regulation ,Case-Control Studies ,030220 oncology & carcinogenesis ,Cancer research ,Molecular Medicine ,Original Article ,business - Abstract
Intestinal fibrosis is the most common complication of Crohn's disease (CD) that is one major disorder of inflammatory bowel disease (IBD), but the precise mechanism remains unclear. MiR‐155 has been involved in fibrotic diseases. Here, we determined the role of miR‐155 in regulating intestinal fibrosis. MiR‐155 levels were significantly up‐regulated in CD patients with intestinal stricture CD. The overexpression of miR‐155 significantly aggravated TNBS‐induced CD‐associated intestinal fibrosis. Mechanistically, we identified that HBP1, a negative regulator of the Wnt/β‐catenin signalling pathway, is a direct target of miR‐155. Moreover, in vitro and in vivo experiments suggested that the miR‐155/HBP1 axis activates Wnt/β‐catenin signalling pathway to induce intestinal fibrosis. Taken together, we demonstrated that miR‐155 directly targets HBP1 to induce CD‐associated intestinal fibrosis via Wnt/β‐catenin signalling pathway.
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- 2021
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19. Study on the relationship between lutein bioaccessibility and in vitro lipid digestion of nanostructured lipid carriers with different interface structures
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Yayuan Xu, Xintian Li, Zhuqing Dai, Zhongyuan Zhang, Lei Feng, Meimei Nie, Chunquan Liu, Dajing Li, and Min Zhang
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General Chemical Engineering ,General Chemistry ,Food Science - Published
- 2023
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20. Multivariate Analysis of Solid Pulmonary Nodules Smaller than 1 cm in Distinguishing Lung Cancer from Intrapulmonary Lymph Nodes
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Jizheng TANG, Chunquan LIU, Peihao WANG, and Yong CUI
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malignant pulmonary nodules ,receiver operating characteristic (roc) curve ,solid pulmonary nodules ,intrapulmonary lymph nodes ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 - Abstract
Background and objective Preoperative diagnosis and differential diagnosis of small solid pulmonary nodules are very difficult. Computed tomography (CT), as a common method for lung cancer screening, is widely used in clinical practice. The aim of this study was to analyze the clinical data of patients with malignant pulmonary nodules and intrapulmonary lymph nodes in the clinical diagnosis and treatment of
- Published
- 2021
21. Study on drying efficiency, uniformity, and physicochemical characteristics of carrot by tunnel microwave drying combined with explosion puffing drying
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Jiangfeng Song, Dajing Li, Xumin Lang, Chunquan Liu, Chunju Liu, Ning Jiang, Cunshan Zhou, Yadong Xiao, Min Zhang, Zhang Zhongyuan, and Xu Yayuan
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0404 agricultural biotechnology ,Materials science ,020401 chemical engineering ,General Chemical Engineering ,04 agricultural and veterinary sciences ,02 engineering and technology ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Pulp and paper industry ,040401 food science ,Microwave ,Combined method - Abstract
Tunnel microwave drying (TMD) is commonly applied in industrial production of dried products. In this study, carrot slices were processed by a combined method of explosion puffing drying (EPD) and ...
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- 2020
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22. Microstructure and mechanical properties of rolled Mg–Gd–Zn–Zr–Ag–Al–Li alloys
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Xianhua Chen, Teng Tu, Tao Chen, Chunquan Liu, and Fusheng Pan
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010302 applied physics ,Microstructural evolution ,Materials science ,Metals and Alloys ,02 engineering and technology ,Plasticity ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Microstructure ,01 natural sciences ,Hot rolled ,0103 physical sciences ,Materials Chemistry ,Texture (crystalline) ,Physical and Theoretical Chemistry ,Composite material ,0210 nano-technology ,Elastic modulus - Abstract
The microstructural evolution and mechanical properties of hot rolled Mg-12Gd-1Zn-0.5Zr-0.5Ag (in wt.%) (MGZKA) alloys, with and without Al and Li additions, were investigated in this study. The Al and Li-containing alloys achieved excellent overall mechanical properties, especially MGZKA-6Al5Li alloy with a high elastic modulus of 52.2 GPa and a good plasticity of 15%. Compared with Al and Li-free MGZKA alloy, the fragmented Al2Gd and nanoscale Al2Li3 phases with high modulus are observed in Al and Li-containing MGZKA-4Al3Li and MGZKA-6Al5Li alloys, which contribute to the overall elastic modulus of the alloys. The dynamic recrystallization regions of Al and Li-containing alloys increased while c/a ratio reduced, leading to the weakened texture. The activation of non-basal slip in Al and Li-containing alloys is closely related to the fine grains and weakened texture, which jointly promote the plasticity of Al and Li-containing alloys.
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- 2020
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23. Effect of Different Heat Treatment Processes on Microstructure Evolution and Tensile Properties of Hot-Rolled Medium-Mn Steel
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Qichun Peng, Chengwei Yang, Jianli Li, Chunquan Liu, and Zhengliang Xue
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010302 applied physics ,Materials science ,Tension (physics) ,0211 other engineering and technologies ,Uniaxial tension ,02 engineering and technology ,General Medicine ,Work hardening ,Treatment parameters ,Microstructure ,01 natural sciences ,Hot rolled ,0103 physical sciences ,Metallic materials ,Ultimate tensile strength ,Composite material ,021102 mining & metallurgy - Abstract
The effects of different heat treatment processes on microstructure evolution and tensile properties of Fe-0.11C-5.23Mn-1.11Al-0.10Si medium-Mn steel were investigated. The uniaxial tensile properties of tension specimens after heat treatment were tested, and the relationship between different annealed microstructures and tensile properties was analyzed; furthermore, the optimum heat treatment parameters were explored. Besides, the water-quenched sample exhibited an extensive TRIP effect than the furnace-cooled sample. The optimum microstructure and mechanical properties can be obtained when the sample is intercritically annealed at 625 °C for 4 h and then water-quenched. At the same time, the work hardening rate of the experimental steel is expounded, which provides theoretical reserve and technical support for the practical application of this kind of steel.
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- 2020
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24. Chitosan-based biodegradable active food packaging film containing Chinese chive (Allium tuberosum) root extract for food application
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Camel Lagnika, Chunquan Liu, Zhuqing Dai, Meimei Nie, Asad Riaz, Jiangfeng Song, Malik Muhammad Hashim, Hao Luo, and Dajing Li
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Chemical Phenomena ,DPPH ,Chive ,Phytochemicals ,Active packaging ,Biocompatible Materials ,02 engineering and technology ,Plant Roots ,Biochemistry ,Chitosan ,03 medical and health sciences ,chemistry.chemical_compound ,Structural Biology ,medicine ,Thermal stability ,Molecular Biology ,Chromatography, High Pressure Liquid ,Mechanical Phenomena ,030304 developmental biology ,0303 health sciences ,ABTS ,Aqueous solution ,Plant Extracts ,Spectrum Analysis ,Food Packaging ,Polyphenols ,General Medicine ,021001 nanoscience & nanotechnology ,Food packaging ,chemistry ,Swelling ,medicine.symptom ,0210 nano-technology ,Nuclear chemistry - Abstract
The objective of the present study was to develop chitosan (CS) based novel functional films containing Chinese chive root extract (CRE) using solution casting method. CRE at different concentrations (1, 3 and 5% in w/w) were incorporated into the film-forming solution. Scanning electron microscopy (SEM), Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and thermal behavior analysis (DSC & TGA) were performed to investigate the structure, potential interaction and thermal stability of prepared films. It was revealed by SEM that higher extract concentration triggered the formation of agglomerates within the films. Incorporation of CRE into CS resulted in decrease tensile properties of the films from 28.9 to 15.4 MPa, whereas thickness was increased from 0.076 to 0.113 mm. The water solubility, swelling degree and water vapor permeability were significantly decreased from 31.6 to 18.7%, 57.4 to 40.5% and 15.67 to 7.81 × 10−11 g·m−1s−1Pa−1, respectively. DPPH and ABTS radical scavenging ability of CS-CRE films were increased from 6.95 to 47.05% and 11.98 to 57.38%, respectively. CS-CRE5 film showed the highest biodegradability of 47.36%. The films prepared by addition of CRE into CS exhibited good antioxidant and antimicrobial activity indicating that it could be developed as bio-composite food packaging material for food industry.
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- 2020
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25. Multivariate analyses of the volatile components in fresh and dried turnip (Brassica rapa L.) chips via HS-SPME–GC–MS
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Chun-ju Liu, Jia-Heng Li, Dajing Li, Qi Gao, Hao-Ting Han, Jia-Hui Zhang, Chunquan Liu, and You-Lin Xue
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0106 biological sciences ,04 agricultural and veterinary sciences ,040401 food science ,01 natural sciences ,Hexanal ,Freeze-drying ,chemistry.chemical_compound ,0404 agricultural biotechnology ,chemistry ,010608 biotechnology ,Brassica rapa ,Principal component analysis ,Air drying ,Food science ,Gas chromatography–mass spectrometry ,Food Science - Abstract
Turnip is a vegetable that has many health promoting effects. To diversify the usage and increase the consumption of turnip, the effects of hot air drying, infrared drying, explosion puff drying and freeze drying (FD) on the volatiles of turnip chips were studied. The volatiles of fresh turnip and dried turnip chips were isolated by HS-SPME–GC–MS and a total of 67 volatiles were identified. However, the volatiles in turnip chips dried by different methods are quite different. Based on principal component analysis and hierarchical cluster analysis, the volatiles of fresh turnip were distinguished from those of the dried chips and FD was separated from the other drying methods. As the result of orthogonal projection on latent structure-discriminant analysis (OPLS-DA), isothiocyanato-cyclopropane and (2-isothiocyanatoethyl)-benzene were identified as the characteristic volatiles of fresh turnip. While, 2-azido-2,3,3-trimethyl-butane and hexanal were identified as the characteristic volatiles for FD dried chips.
- Published
- 2020
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- View/download PDF
26. A case of middle mediastinal cavernous hemangioma
- Author
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Xianqi Cai, Chunquan Liu, and Yong Cui
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Surgical resection ,medicine.medical_specialty ,Middle mediastinum ,Case Report ,Case Reports ,lcsh:RC254-282 ,Preoperative examination ,Cavernous hemangioma ,Hemangioma ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,medicine ,business.industry ,surgical resection ,General Medicine ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,030104 developmental biology ,Oncology ,Male patient ,030220 oncology & carcinogenesis ,Histopathology ,middle mediastinal ,Radiology ,medicine.symptom ,business ,Cavernous hemangiomas - Abstract
While cavernous hemangioma are frequently observed in various tissues and locations in the body, mediastinal cavernous hemangiomas (CHMs) are rare, particularly in the middle mediastinum. Here, we report a case of a middle CHM which was diagnosed and treated in our hospital. A male patient age 57 years was admitted with a mediastinal circular low‐density lesion. Preoperative examination was performed with a subsequent diagnosis of a mediastinal lesion. The lesion was resected and post‐operative histopathology suggested that it was a cavernous hemangioma. Post‐operative recovery was uneventful, and a follow‐up examination nearly one year later showed that the patient had no recurrence.
- Published
- 2020
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27. Efficacy of aqueous ozone combined with sodium metasilicate on microbial load reduction of fresh-cut cabbage
- Author
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Jiangfeng Song, Cai‐E. Wu, Yadong Xiao, Zhang Zhongyuan, Dajing Li, Chunquan Liu, and Meimei Nie
- Subjects
fresh produce ,Ozone ,Aqueous solution ,lcsh:TP368-456 ,Chemistry ,hurdle technology ,010401 analytical chemistry ,Hurdle technology ,lcsh:TX341-641 ,04 agricultural and veterinary sciences ,Sterilization (microbiology) ,040401 food science ,01 natural sciences ,color ,0104 chemical sciences ,lcsh:Food processing and manufacture ,chemistry.chemical_compound ,0404 agricultural biotechnology ,quality ,nutrients ,Food science ,Sodium metasilicate ,microorganisms ,lcsh:Nutrition. Foods and food supply ,Food Science - Abstract
The mechanism behind the sterilization effects of ozone in combination with sodium metasilicate (SM) is still unknown. Therefore, the effects of treatments of fresh-cut cabbage with aqueous ozone combined with SM on microbial growth, and produce quality were evaluated in detail during storage. The results indicated that treating the cabbage with 2 ppm aqueous ozone combined with 0.4% SM for 2 min achieved acceptable microbial quality, and reduced E. coli O157:H7 counts by 3.33 logs compared with the control samples after 12 d of storage. This combination treatment had no negative effects on sensory characteristics (appearance and off-odor), color, and the contents of vitamin C, total phenols and carotenoids. The combined ozone-SM treatment was more effective than individual treatments in controlling the pathogens and native microorganisms on fresh produce and could extend the storage up to 12 d. This hurdle treatment may be used as a processing intervention to control microorganism.
- Published
- 2020
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28. Effect of Pretreatment and High Hydrostatic Pressure on Soluble Dietary Fiber in Lotus Root Residues
- Author
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Yanyang Gu, Liying Niu, Jiangfeng Song, Chunju Liu, Zhongyuan Zhang, Chunquan Liu, Dajing Li, and Lixia Xiao
- Subjects
Article Subject ,Safety, Risk, Reliability and Quality ,Food Science - Abstract
High hydrostatic pressure (HHP) can enhance the physicochemical properties of soluble dietary fiber (SDF) from fruit and vegetable residues including hydration properties, emulsibility, and rheological properties, while the pretreatment methods such as solid-water suspension status are ignored all along. Here, three groups of lotus root residue (LRR) for HHP treatment (400 MPa, 15 min) were prepared: the fresh lotus root residue (FLRR), FLRR mixed with water (FLRR + W), and dried FLRR suspended in water at the same solid/water level with FLRR + W (DLRR + W). As a control, non-HHP-treated FLRR was tested. Results showed that FLRR + W obtained the highest SDF yield and presented a honeycomb structure which was not observed in other LRR samples. In addition, properties of SDF extract from FLRR + W changed most significantly, including not only the enhancement of SDF yield, the improvement of hydration properties, and the reduction of molecular weight but also the increase of thermal and rheological stability. Principal component analysis (PCA) profile illustrated that the difference of LRR-water system contributed 27.6% to the SDF physicochemical changes, and SDF from DLRR + W distinguished it from the other samples with mannose, ribose, and glucuronic acid, indicating that the drying procedure also played a role in the HHP treatment focusing on the sugar constitution. Therefore, the solid-water suspension status is a noteworthy issue before HHP treatment aiming at SDF modification.
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- 2022
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29. Microstructure and Mechanical Properties of Hybrid Graphene Nanoplatelets/Titanium Powder Reinforced Az91 Laminated Composite
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Yitao Wang, Jianbo Li, Biao Tang, Huan Luo, Yangfan Lu, Hui Yu, Weijun He, Chunquan Liu, Kaihong Zheng, and Fusheng Pan
- Published
- 2022
- Full Text
- View/download PDF
30. Influence of Ti-6al-4v Particles on Mechanical Behaviors and Microstructure of Az91 Alloy
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Huan Luo, Jianbo Li, Junliu Ye, Yangfan Lu, Jun Tan, Jiangfeng Song, Shengli Han, Chunquan Liu, Kaihong Zheng, and Fusheng Pan
- Published
- 2022
- Full Text
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31. Microstructure and Mechanical Properties of Lpso Dominant Mg-2y-Cu-Tm (Tm=Cu, Zn, Co, Ni) Alloys
- Author
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Shirong Zhang, Jonghyun Kim, Fengxue Wang, Kaikai Kang, Heng Xue, Chunquan Liu, and Fusheng Pan
- Subjects
History ,Polymers and Plastics ,Business and International Management ,Industrial and Manufacturing Engineering - Published
- 2022
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32. Effect of Heat Treatment Process on Mechanical Properties and Microstructure Evolution of Mg-9gd-1.5y-0.8zn-0.3zr Alloy
- Author
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Daiyi Deng, Renju Cheng, Chunquan Liu, Bin Jiang, Mingbo Yang, Haijun Wang, Lirui Liu, Yanlong Ma, Kaihong Zheng, and Fusheng Pan
- Published
- 2022
- Full Text
- View/download PDF
33. Strengthening Mechanism and Carbide Precipitation Behavior of Nb-Mo Microalloy Medium Mn Steel
- Author
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Chunquan Liu, Fen Xiong, Yong Wang, Yuxin Cao, Xinbin Liu, Zhengliang Xue, Qichun Peng, and Longsheng Peng
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medium Mn steel ,Technology ,Microscopy ,QC120-168.85 ,strength mechanism ,QH201-278.5 ,precipitation ,Engineering (General). Civil engineering (General) ,Article ,TK1-9971 ,nanometer-sized carbide ,Descriptive and experimental mechanics ,General Materials Science ,Electrical engineering. Electronics. Nuclear engineering ,TA1-2040 - Abstract
This study investigates the strengthening mechanism and carbide precipitation behavior of medium Mn steel with Nb-Mo microalloy after cyclic quenching and austenite reverse transformation treatment. The results show that the Nb/Mo element not only precipitates (Nb,Mo)C in the grains, hindering the movement of dislocations and increases the strength, but also segregates at the austenite/ferrite grain boundary, thus delaying the transformation from austenite to ferrite. In addition, a large amount of nano-scale cementite is retained after cyclic quenching and austenite reverse transformation, which has a positive effect on the proportion of retained austenite in medium Mn steel. Moreover, the carbides with small size and low Mn content are dissolved, and the decomposed C and Mn content are beneficial to the nucleation of austenite during the intercritical annealing process at a temperature of 690 °C.
- Published
- 2021
34. Effects of different hydrocolloids on the water migration, rheological and 3D printing characteristics of β-carotene loaded yam starch-based hydrogel
- Author
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Lei, Feng, Jingnan, Wu, Lei, Cai, Ming, Li, Zhuqing, Dai, Dajing, Li, Chunquan, Liu, and Min, Zhang
- Subjects
Dioscorea ,Viscosity ,Polysaccharides, Bacterial ,Water ,Hydrogels ,Starch ,General Medicine ,Carrageenan ,beta Carotene ,Analytical Chemistry ,Gum Arabic ,Plant Gums ,Printing, Three-Dimensional ,Colloids ,Rheology ,Food Science - Abstract
The effects of guar gum (GG), xanthan gum (XG), carrageenan gum (CG), xanthan-guar gum blend (XG-GG), chitosan (CS), gum arabic (GA) on the water migration, rheological and 3D printing properties of β-carotene loaded yam starch-based hydrogel (BCH) were investigated to expand product form of β-carotene. The results showed that CS addition promoted the migration of weakly bound water to tightly bound water in BCH. Addition of GG, CG, XG-GG, CS and GA enhanced apparent viscosity, G', G'', hardness and gumminess of BCH. CG, XG-GG, CS and GA addition improved printing stability of BCH. The printed objects added with GG and CS displayed smooth lines with fine resolution and higher formability, which showed a more uniform pore distribution and thinner gel skeleton structure. The results of XRD showed that hydrocolloids addition decreased the relative crystallinity of BCH. A combination of physicochemical parameters could be used to discriminate samples through hierarchical cluster analysis.
- Published
- 2022
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35. Effects of pretreatment and drying methods on the quality and stability of dried sweet potato slices during storage
- Author
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Chunquan Liu, Jiangfeng Song, Ning Jiang, Asad Riaz, Dajing Li, Min Zhang, Wei Qiuyu, and Camel Lagnika
- Subjects
Chemistry ,General Chemical Engineering ,media_common.quotation_subject ,Quality (business) ,General Chemistry ,Food science ,Food Science ,media_common - Published
- 2021
- Full Text
- View/download PDF
36. Dielectric properties of edible fungi powder related to radio-frequency and microwave drying
- Author
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Ning Jiang, Yang Tao, Zhifang Yu, Chunquan Liu, Han Jiping, Min Zhang, Dajing Li, Siying Qi, Zhang Zhongyuan, Chunlu Qian, Libin Wang, Yadong Xiao, Camel Lagnika, and Chunju Liu
- Subjects
0106 biological sciences ,Materials science ,Dielectric drying ,Edible fungi ,Food spoilage ,Dielectric ,01 natural sciences ,Electromagnetic radiation ,Food processing and manufacture ,0404 agricultural biotechnology ,Drying time ,010608 biotechnology ,Dielectric constant ,TX341-641 ,Composite material ,Dielectric loss factor ,Penetration depth ,Water content ,Nutrition. Foods and food supply ,04 agricultural and veterinary sciences ,TP368-456 ,040401 food science ,Dielectric properties ,Mathematical modeling ,Radio frequency ,Microwave - Abstract
Edible fungi are rich in nutrition, but they are susceptible to spoilage, and often prolonged by drying. RF and microwave energy drying have the advantages of short drying time, high energy efficiency and good process control. However, to develop an effective dielectric drying method, it is important to understand dielectric properties, the major factor characterizing the interaction between the electromagnetic energy and the food. At present, there is a lack of research on dielectric properties of edible fungi. In this study, a vector network analyzer and an open-ended coaxial-line probe were employed to measure the dielectric parameters. The dielectric parameters were observed at different temperatures (25–85 °C) for edible fungi powder with moisture content ranging from 5 to 30% wet basis over a frequency range of 1–3000 MHz. The relationship between the dielectric properties and frequency, temperature, and moisture content were obtained via regression analysis. Further, the dielectric penetration depth was calculated, and the effects of frequency, moisture content, and temperature on the penetration depth were also analyzed. The results showed that the dielectric properties of edible fungi powder increased with an increase in moisture content and temperature, while they decreased with increasing frequency. At high moisture content and temperature, the increase in dielectric properties was slightly larger than that at low moisture content and temperature. The dielectric properties changed more evidently at lower radio frequencies than at higher radio frequencies. The penetration depth decreased with an increase in temperature, moisture content, and frequency. It can be concluded that a large penetration depth at radio frequencies below 100 MHz could be used to dry edible fungi on a large scale, whereas microwave energy could be employed for drying edible fungi on a small scale.
- Published
- 2021
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37. Rare cystic lymphangioma in the chest wall of an adult patient: A case report and comprehensive review of the literature
- Author
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Shuai Song, Kaikai Xu, Yong Cui, Chunquan Liu, Dong Chang, Bowen Li, and Hao Li
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Surgical resection ,medicine.medical_specialty ,Chest wall ,Case Report ,cystic lymphangioma ,Case Reports ,lcsh:RC254-282 ,03 medical and health sciences ,Cystic lesion ,0302 clinical medicine ,Female patient ,Lymphangioma ,Humans ,Medicine ,Hamartoma ,Thoracic Wall ,Lymphangiomatosis ,business.industry ,surgical resection ,General Medicine ,Middle Aged ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,030104 developmental biology ,Lymphatic system ,Oncology ,030220 oncology & carcinogenesis ,Doppler color flow ,Female ,Lymphangioma, Cystic ,Radiology ,business - Abstract
Lymphangiomatosis is a rare, benign, hyperproliferative hamartoma composed of dilated lymphatic vessels. Cystic lymphangioma (CL) in the chest wall in an adult patient is rare, but we focus on this type of patient in our present case study. A 54‐year‐old female patient with a painless mass in her chest wall went without treatment for two years following diagnosis. After consenting to treatment, Doppler color flow imaging (DCFI), chest CT, and MRI revealed a cystic lesion with multiple thin septula in the left chest. Surgical resection was performed, and histopathological examination identified a cystic lymphangioma. The patient did not experience recurrence during the follow‐up period., Cystic lymphangioma is a rare disease occurring infrequently in the chest wall of adult patients. MRI is useful for diagnosis and surgical resection is recommended as the main treatment.
- Published
- 2020
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- View/download PDF
38. Cell wall components, cell morphology, and mechanical properties of peach slices submitted to drying
- Author
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Jia-xin Liu, Zhang Zhongyuan, Ning Jiang, Jinjin Cheng, Min Zhang, Niu Liying, Chunquan Liu, Dajing Li, and Chunju Liu
- Subjects
Cell wall ,Viscosity ,Materials science ,Morphology (linguistics) ,General Chemical Engineering ,Pore distribution ,Physical and Theoretical Chemistry ,Composite material ,Cell morphology - Abstract
Through the observation of cell wall components and morphology, the effects of puffing drying on mechanical behavior were analyzed. Decrease in viscosity and irregular pore distribution was observe...
- Published
- 2019
- Full Text
- View/download PDF
39. Effect of microwave and air-borne ultrasound-assisted air drying on drying kinetics and phytochemical properties of broccoli floret
- Author
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Xuhao Zhu, Chunquan Liu, Yang Tao, Pau Loke Show, Yongbin Han, Dandan Li, Cao Ye, and Xiaojun Liao
- Subjects
Materials science ,Chromatography ,business.industry ,General Chemical Engineering ,Kinetics ,Ultrasound ,04 agricultural and veterinary sciences ,02 engineering and technology ,Ultrasound assisted ,040401 food science ,0404 agricultural biotechnology ,020401 chemical engineering ,Phytochemical ,Air drying ,0204 chemical engineering ,Physical and Theoretical Chemistry ,business ,Microwave - Abstract
The drying kinetics and detailed phytochemical profile of broccoli under microwave drying (500 and 900 W) and air-borne ultrasound (125.2 and 180.1 W/dm2) assisted air drying at 70 °C were compared...
- Published
- 2019
- Full Text
- View/download PDF
40. A comparative study of drying methods on physical characteristics, nutritional properties and antioxidant capacity of broccoli
- Author
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Camel Lagnika, Xu Yayuan, Ning Jiang, Yadong Xiao, Jiangfeng Song, Min Zhang, Chunquan Liu, Dajing Li, and Xu Duan
- Subjects
Antioxidant capacity ,Chemistry ,General Chemical Engineering ,Nutritional composition ,food and beverages ,Food science ,Physical and Theoretical Chemistry ,Raw material ,Value (mathematics) - Abstract
Broccoli is considered one of the attractive raw materials for dehydrated vegetables owing to its high nutritional value. However, information about how drying methods affect the physicochemical an...
- Published
- 2019
- Full Text
- View/download PDF
41. Microstructure and mechanical properties of Mo-Nb microalloyed medium Manganese trip Steel by cyclic quenching
- Author
-
Chunquan Liu, Qichun Peng, and Zhengliang Xue
- Subjects
medium Mn steel ,lcsh:TN1-997 ,Quenching ,Austenite ,austenite stability ,Materials science ,Mechanical Engineering ,Metals and Alloys ,TRIP steel ,Microstructure ,Ultimate tensile strength ,Volume fraction ,Mo-Nb microalloyed ,cyclic quenching ,Elongation ,Composite material ,Ductility ,austenite reverse transformation ,lcsh:Mining engineering. Metallurgy - Abstract
A novel cyclic quenching (CQ) and austenite reverse transformation (ART) was proposed for a Fe-0.25C-3.98Mn-1.22Al-0.20Si-0.19Mo-0.03Nb (wt.%) Mo-Nb microalloyed medium-Mn TRIP steel to improve strength and ductility. The results show that after twice cyclic quenching and ART exhibited optimum comprehensive properties, characterized by an ultimate tensile strength of 838 MPa, a total elongation of 90.8%, a product of strength and elongation (PSE) of 76.1 GPa·%, and the volume fraction of austenite of approximately 62 vol.%.
- Published
- 2019
- Full Text
- View/download PDF
42. Improved Corrosion Resistance in AZ61 Magnesium Alloys Induced by Impurity Reduction
- Author
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Di Zhao, Zhu Luo, Xianhua Chen, Chunquan Liu, Renju Cheng, Fusheng Pan, Ai-Tao Tang, Tao Yan, and Yan Dai
- Subjects
010302 applied physics ,Materials science ,Magnesium ,Sodium ,Metallurgy ,Alloy ,Metals and Alloys ,chemistry.chemical_element ,02 engineering and technology ,Solution treatment ,engineering.material ,021001 nanoscience & nanotechnology ,01 natural sciences ,Industrial and Manufacturing Engineering ,Corrosion ,Cathodic protection ,chemistry ,Impurity ,0103 physical sciences ,engineering ,Galvanic cell ,0210 nano-technology - Abstract
The effect of impurity element Fe on corrosion behavior of AZ61 magnesium alloys in various states has been investigated by immersion test and hydrogen evolution measurements in 3.5% sodium chloride solution. The corrosion rate is found to relay on the impurity Fe concentration in the alloys and decreases with decreasing Fe content. When Fe content drops from 150 ppm to 10 ppm, the corresponding corrosion rates under as-cast and solution treatment conditions are reduced from 8.54 mm/a and 8.61 mm/a to 2.54 mm/a and 0.21 mm/a, respectively. The corrosion pattern of the AZ61 alloys is the localized corrosion, and the galvanic couples are formed among the impurity particles, second-phase particles and the matrix. The Fe impurity particles tend to act as main cathodic to form micro-galvanic cell with the α-Mg matrix, which is harmful for corrosion resistance of AZ61 alloy.
- Published
- 2019
- Full Text
- View/download PDF
43. Effect of UV-B radiation and a supplement of CaCl2 on carotenoid biosynthesis in germinated corn kernels
- Author
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He Weiwei, Jiangfeng Song, Chunquan Liu, Yuxi Wang, Wei Qiuyu, Yadong Xiao, Zhuqing Dai, and Dajing Li
- Subjects
inorganic chemicals ,Antioxidant ,medicine.medical_treatment ,macromolecular substances ,Carotenoid biosynthesis ,01 natural sciences ,Analytical Chemistry ,Superoxide dismutase ,chemistry.chemical_compound ,0404 agricultural biotechnology ,medicine ,Food science ,Carotenoid ,chemistry.chemical_classification ,biology ,010401 analytical chemistry ,food and beverages ,04 agricultural and veterinary sciences ,General Medicine ,Malondialdehyde ,040401 food science ,Enzyme assay ,0104 chemical sciences ,chemistry ,Germination ,biology.protein ,Food Science ,Peroxidase - Abstract
This study investigated effects of UV-B radiation and CaCl2 on the enhancement of carotenoid content in germinated corn kernels. UV-B radiation and CaCl2 treatments were effective for promoting both carotenoid content and antioxidant activity. Furthermore, the carotenoid content was greater when under the combined treatments of UV-B radiation and CaCl2. Activities of superoxide dismutase and peroxidase were enhanced but malondialdehyde content was weakened by UV-B radiation plus CaCl2 compared to the UV-B radiation only. The mRNA expression of PSY, PDS, ZDS, LCYB, LCYE, BCH1, CYP97C genes involved in the carotenoid biosynthesis pathway showed different patterns in UV-B radiation and CaCl2 treatments. This reveals that the UV-B radiation can increase carotenoid content and antioxidant enzyme activity. Moreover, CaCl2 can further improve carotenoid content and reduce photooxidative damage caused by UV-B radiation.
- Published
- 2019
- Full Text
- View/download PDF
44. Effect of Alloying Element on Electromagnetic Interference Shielding Effectiveness of Binary Magnesium Alloys
- Author
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Kai Song, Zhu Luo, Fusheng Pan, Yan Dai, Di Zhao, Xianhua Chen, and Chunquan Liu
- Subjects
010302 applied physics ,Materials science ,Valence (chemistry) ,Magnesium ,Metals and Alloys ,Binary number ,chemistry.chemical_element ,02 engineering and technology ,Electron ,Conductivity ,021001 nanoscience & nanotechnology ,Microstructure ,01 natural sciences ,Industrial and Manufacturing Engineering ,Condensed Matter::Materials Science ,chemistry ,Electrical resistivity and conductivity ,0103 physical sciences ,Electromagnetic shielding ,Physics::Atomic and Molecular Clusters ,Physics::Atomic Physics ,Composite material ,0210 nano-technology - Abstract
The microstructure, electrical conductivity and electromagnetic interference shielding effectiveness of Mg–X (X = Al, Sn, Y and Gd) alloys in as-cast and solution states were systematically investigated in this study. The electrical conductivity and electromagnetic shielding capacity of binary magnesium alloys decrease linearly with alloying element content. The electromagnetic shielding effectiveness of the binary magnesium alloys with the same alloying element content is as follows: Mg–Gd
- Published
- 2019
- Full Text
- View/download PDF
45. Dielectric properties of thermosonically treated Agaricus bisporus slices during microwave vacuum drying and correlation with the water state
- Author
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Libin Wang, Dajing Li, Zhifang Yu, Chunquan Liu, Min Zhang, Zhang Zhongyuan, Yadong Xiao, Chunju Liu, Ning Jiang, and Camel Lagnika
- Subjects
Materials science ,Water state ,General Chemical Engineering ,04 agricultural and veterinary sciences ,02 engineering and technology ,Dielectric ,Network analyzer (electrical) ,040401 food science ,Vacuum drying ,0404 agricultural biotechnology ,020401 chemical engineering ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Composite material ,Microwave ,Agaricus bisporus - Abstract
The dielectric properties of thermosonically treated Agaricus bisporus slices during microwave vacuum drying were determined, by using a network analyzer and an open-ended coaxial-line prob...
- Published
- 2019
- Full Text
- View/download PDF
46. Retrospective Analysis of Single Closed Chest Drainage in Superior Lobectomy of Lung Cancer
- Author
-
Qiang BAI, Chunquan LIU, and Yong CUI
- Subjects
Lung neoplasms ,Lung lobectomy ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 ,Closed chest drainage - Abstract
Background and objective There is no consensus on one or two chest drains closed chest drainage in superior lobectomy of lung cancer and mediastinal lymph node dissection. This study investigated the postoperative complications about drainage and evaluated the effectiveness. Methods We retrospectively reviewed the clinical data of patients with single closed chest drainage in superior lobectomy of lung cancer and mediastinal lymph node dissection of Beijing Friendship Hospital between April 2012 and May 2017, and evaluated the effectiveness. Results From the available data of 301 patients, the complication rate after superior lobectomy was 9.3%, and the complication rate of drainage after superior lobectomy was 5.64%. Conclusion The effectiveness of drainage of single closed chest drainage in superior lobectomy of lung cancer and mediastinal lymph node dissection is no less than double drainage.
- Published
- 2019
47. Effects of pretreatments on properties of microwave-vacuum drying of sweet potato slices
- Author
-
Min Zhang, Jiapeng Huang, Ning Jiang, Wei Qiuyu, Jiangfeng Song, Dajing Li, Chunquan Liu, and Camel Lagnika
- Subjects
Sucrose ,Chromatography ,Blanching ,General Chemical Engineering ,04 agricultural and veterinary sciences ,02 engineering and technology ,040401 food science ,Vacuum drying ,body regions ,chemistry.chemical_compound ,0404 agricultural biotechnology ,020401 chemical engineering ,chemistry ,Distilled water ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Microwave ,Osmotic dehydration - Abstract
Pretreatments of blanching (BL); osmotic dehydration at 35°Brix of sucrose (OD); ultrasound in distilled water (UD), and ultrasound-assisted osmotic dehydration (UO) were carried out for microwave-...
- Published
- 2019
- Full Text
- View/download PDF
48. Strain hardening of as-extruded Mg-xZn (x = 1, 2, 3 and 4 wt%) alloys
- Author
-
Xianhua Chen, Fusheng Pan, Chunquan Liu, J.N. Yao, Jingfeng Wang, Chaoyue Zhao, Shangyu Gao, Teng Tu, and Andrej Atrens
- Subjects
Materials science ,Polymers and Plastics ,Magnesium ,Mechanical Engineering ,Metals and Alloys ,Uniaxial tension ,chemistry.chemical_element ,02 engineering and technology ,Strain hardening exponent ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,chemistry ,Mechanics of Materials ,Materials Chemistry ,Ceramics and Composites ,Hardening (metallurgy) ,Composite material ,0210 nano-technology - Abstract
The influence of Zn on the strain hardening of as-extruded Mg-xZn (x = 1, 2, 3 and 4 wt%) magnesium alloys was investigated using uniaxial tensile tests at 10−3 s-1 at room temperature. The strain hardening rate, the strain hardening exponent and the hardening capacity were obtained from true plastic stress-strain curves. There were almost no second phases in the as-extruded Mg-Zn magnesium alloys. Average grain sizes of the four as-extruded alloys were about 17.8 μm. With increasing Zn content from 1 to 4 wt%, the strain hardening rate increased from 2850 MPa to 6810 MPa at (σ-σ0.2) = 60 MPa, the strain hardening exponent n increased from 0.160 to 0.203, and the hardening capacity, Hc increased from 1.17 to 2.34. The difference in strain hardening response of these Mg-Zn alloys might be mainly caused by weaker basal texture and more solute atoms in the α-Mg matrix with higher Zn content.
- Published
- 2019
- Full Text
- View/download PDF
49. Primary lung squamous cell carcinoma with gastric metastasis: A case report
- Author
-
Ying He, Xianqi Cai, Xinchun Duan, Yong Cui, and Chunquan Liu
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Pathology ,medicine.medical_specialty ,Stromal cell ,business.industry ,Stomach ,General Medicine ,medicine.disease ,Dysphagia ,Metastasis ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Cancer cell ,medicine ,Carcinoma ,Sputum ,medicine.symptom ,Lung cancer ,business - Abstract
Approximately 50% of patients with primary lung cancer have distant metastasis at the time of their first visit, but gastric metastasis is a rare occurrence. Herein, we report a case of progressive dysphagia as the first symptom and the final diagnosis of primary lung squamous cell carcinoma metastasis. A 61-year-old man was diagnosed with a solitary left lower lobe tumor and a solitary carcinoma of gastric cardia suspected to be metastatic or malignant stromal tumors. After surgical resection, the final diagnoses were primary differentiated squamous cell lung cancer, metastatic squamous cell carcinoma of the stomach, and secondary lymph node metastasis. Gastrointestinal metastasis should be suspected in lung cancer patients with gastrointestinal symptoms. Gastric cancer metastasis from lung cancer is most likely the result of the aspiration of cancer cells containing sputum into the stomach.
- Published
- 2018
- Full Text
- View/download PDF
50. Multiple primary lung cancer versus intrapulmonary metastatic cancer: A case of multiple pulmonary nodules
- Author
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Xianqi Cai, Yong Cui, Hua-Wei Li, Chunquan Liu, Ying He, Shuai Song, Xiangyu Chu, Jiandong Yang, and Kaikai Xu
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Pathology ,medicine.medical_specialty ,Case Report ,Case Reports ,Gene mutation ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,intrapulmonary metastatic cancer ,Medicine ,Lung cancer ,Multiple Pulmonary Nodules ,Lung ,business.industry ,Cancer ,Nodule (medicine) ,General Medicine ,respiratory system ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,molecular detection ,030104 developmental biology ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Adenocarcinoma ,multiple primary lung cancer ,medicine.symptom ,business - Abstract
A preoperative chest computed tomography examination of the right breast in a 52‐year‐old woman with breast cancer revealed multiple nodules in both lungs. The nodule in the apical segment of the upper lobe of the right lung was larger, at a diameter of approximately 2.1 cm. The patient underwent resection of the right breast, followed by thoracoscopic wedge resection of four pulmonary nodules. Hematoxylin and eosin staining and immunohistochemistry showed that the nodules in the apical and anterior segments of the upper lobe and the paravertebral nodule in the lower lobe of the right lung were primary adenocarcinoma, and the subpleural nodule in the lower lobe of the right lung was infiltrated with inflammatory cells. Exon sequencing was conducted in the resected tissue samples and blood specimens. According to the characteristics of the somatic mutations, the nodule in the apical segment of the upper lobe of the right lung was primary lung adenocarcinoma, the nodule in the anterior segment of the upper lobe and the paravertebral nodule in the lower lobe of the right lung were intrapulmonary metastatic cancer, and the subpleural nodule in the lower lobe of the right lung indicated early stage tumor progression. This case provides new evidence that conducting gene detection in multiple tissue samples from patients who have undergone resection may assist to determine the relationship among multiple nodules in the lung to exclude lung metastasis of breast cancer.
- Published
- 2018
- Full Text
- View/download PDF
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