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Wang M, Yan L, Li X, Zhang Y, Li Z, Wen K, Liu H, Xiong B. Influence of Zn Addition on the Aging Precipitate Behavior and Mechanical Properties of Al-Cu-Li Alloy. Materials (Basel) 2024; 17:1562. [PMID: 38612077 PMCID: PMC11013012 DOI: 10.3390/ma17071562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
In the present work, the effect of Zn on the aging precipitates and mechanical properties of Al-Cu-Li alloys was investigated by Vickers hardness, tensile tests, transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The results indicated that the addition of Zn reduced the activation energy of the T1 phase and makes it easier to precipitate. The activation energy of the T1 phase, which was 107.02 ± 1.8 KJ/mol, 94.33 ± 1.7 KJ/mol, 90.33 ± 1.7 KJ/mol and 90.28 ± 1.6 KJ/mol for 0Zn, 0.4Zn, 0.8Zn and 1.2Zn alloy, respectively. The area number density of the T1 precipitate ranged from 97.0 ± 4.4 pcs/μm2 to 118.2 ± 2.8 pcs/μm2 as the Zn content increased from 0 to 1.2 wt.%. Consequently, the addition of Zn promoted the precipitation of the T1 phase. Therefore, the peak hardness and tensile strength of the alloy also increased with the increase in the Zn content, and the hardness of the alloy with Zn content of 1.2 wt.% increased by 16.5 ± 1.4 HV; meanwhile, the ultimate tensile strength increased by 46.5 ± 2.5 MPa. Therefore, the area number density of precipitates increased and improved the strength of the Zn-containing alloy.
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Affiliation(s)
- Meiqi Wang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Lizhen Yan
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yongan Zhang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Kai Wen
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Hongwei Liu
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (M.W.); (Y.Z.); (Z.L.); (K.W.); (H.L.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Gao X, Gao G, Li Z, Li X, Yan L, Zhang Y, Xiong B. Effects of Different Heating and Cooling Rates during Solution Treatment on Microstructure and Properties of AA7050 Alloy Wires. Materials (Basel) 2024; 17:310. [PMID: 38255477 PMCID: PMC10817534 DOI: 10.3390/ma17020310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/26/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024]
Abstract
In the present study, the effects of varying heating and cooling rates during the solution treatment process on the microstructure and properties of AA7050 alloy wires were investigated using tensile tests, metallographic microscopy, electron backscattered diffraction, and transmission electron microscopy. It was found that the recrystallized grain size of the alloy, subjected to method of rapid heating, exhibited a smaller and more uniform distribution in comparison to method of slow heating. The low density of η' strengthening phases after the artificial aging treatment was formed using air cooling method. Meanwhile, by using the water quenching method sufficient solute atoms and more nucleation sites were provided resulting in a large number of η' strengthening phases being formed. In addition, the alloy processed using the water quenching method displayed higher strength than that treated using the air cooling method for the T6 and T73 states. Furthermore, coarse precipitates formed and less clusters were observed in the matrix, while high density nanoscale clusters and no continuous precipitation are formed when using the water quenching method.
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Affiliation(s)
- Xinyu Gao
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- Northeast Light Alloy Co., Ltd., Harbin 150060, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Guanjun Gao
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Zhihui Li
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Lizhen Yan
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Yongan Zhang
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Baiqing Xiong
- State Key Laboratory of Non-Ferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (X.G.); (X.L.); (L.Y.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Li H, Li X, Li Y, Gao G, Wen K, Li Z, Zhang Y, Xiong B. Exploration of Alloying Elements of High Specific Modulus Al-Li Alloy Based on Machine Learning. Materials (Basel) 2023; 17:92. [PMID: 38203946 PMCID: PMC10779854 DOI: 10.3390/ma17010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/07/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024]
Abstract
In the aerospace sector, the development of lightweight aircraft heavily relies on the utilization of advanced aluminum-lithium alloys as primary structural materials. This study introduces an investigation aimed at optimizing the composition of an Al-2.32Li-1.44Cu-2.78Mg-0.3Ag-0.3Mn-0.1Zr alloy. The optimization process involves the selection of alloying elements through the application of machine learning techniques, with a focus on expected improvements in the specific modulus of these alloys. Expanding upon the optimization of the benchmark alloy's components, a more generalized modulus prediction model for Al-Li alloys was formulated. This model was then employed to evaluate the anticipated specific modulus of alloys within a virtual search space, encompassing substitutional elements. The study proceeded to validate six Al-Li alloys with a notably high potential for achieving an improved specific modulus. The results revealed that an alloy incorporating 0.96 wt.% of Ga as a substitutional element exhibited the most favorable microstructure. This alloy demonstrated optimal tensile strength (523 MPa) and specific modulus (31.531 GPa/(g·cm-3)), closely resembling that of the benchmark alloy. This research offers valuable insights into the application of compositional optimization to enhance the mechanical properties of Al-Li alloys. It emphasizes the significance of selecting alloying elements based on considerations such as their solid solubility thresholds and the expected enhancement of the specific modulus in Al-Li alloys.
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Affiliation(s)
- Huiyu Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yanan Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Guanjun Gao
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Kai Wen
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yongan Zhang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China (G.G.); (K.W.); (Z.L.); (Y.Z.); (B.X.)
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Yao S, Xiong B, Tuo JY, Qin Y, Meng FD, Xia YF, Zhang M, Wei SZ. [Survival analysis of malignant tumors in cancer registration areas of Hubei province in China, 2013 to 2015]. Zhonghua Zhong Liu Za Zhi 2023; 45:1051-1056. [PMID: 38110313 DOI: 10.3760/cma.j.cn112152-20230403-00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Objective: To analyze the survival of newly diagnosed malignant tumors in cancer registration areas of Hubei Province from 2013 to 2015. Methods: From January 1, 2013 to December 31, 2015, all newly diagnosed malignant tumors were collected from cancer registration areas in Hubei Province, and patients were followed up using a combination of active and passive methods. Cancer survival was analyzed using the strs package in Stata software. Observed and expected survival were calculated using the life table and Ederer Ⅱ methods, and the difference in survival rate of patients with different sex, age, urban and rural areas and different cancer species was compared. Results: From 2013 to 2015, 83 987 new malignant tumors were diagnosed in cancer registration areas in Hubei Province, including 45 742 males (54.46%) and 38245 females (45.54%). The overall 5-year relative survival rate was 41.46%, 34.43% for men and 49.63% for women. With the increase of age, the observed survival rate and relative survival rate of patients of different genders showed a decreasing trend. The 5-year relative survival rate of patients with malignant tumors was 47.58% in urban areas and 26.58% in rural areas. The observed survival rate and relative survival rate in rural areas were significantly lower than those in urban areas. The overall 5-year relative survival rates for common malignancies were 20.61% for lung cancer, 15.36% for liver cancer, 22.89% for esophageal cancer, 34.92% for gastric cancer, and 54.87% for colorectal cancer. In addition, the 5-year relative survival rates of common malignant tumors in women were 78.65% for breast cancer and 52.55% for cervical cancer. Conclusions: In Hubei Province, the survival rate of malignant tumors is different among different genders, regions, age groups and cancer species. Prevention and treatment and health education should be strengthened for malignant tumor patients in rural areas and those with high incidence and low survival rate such as liver cancer and lung cancer, and relevant strategies should be formulated according to the gender and age distribution characteristics of different cancer species.
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Affiliation(s)
- S Yao
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - B Xiong
- Wufeng Tujia Autonomous County Center for Disease Control and Prevention, Yichang 443413, China
| | - J Y Tuo
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - Y Qin
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - F D Meng
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - Y F Xia
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - M Zhang
- Hubei Cancer Registration Center, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430079, China
| | - S Z Wei
- Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Colorectal Cancer Clinical Medical Research Center, Wuhan Colorectal Cancer Clinical Medical Research Center, Wuhan 430079, China
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Yan H, Liu R, Li S, Zhang Y, Xiao W, Xue B, Xiong B, Li X, Li Z. The Effects of the Al and Zr Contents on the Microstructure Evolution of Light-Weight Al xNbTiVZr y High Entropy Alloy. Materials (Basel) 2023; 16:7581. [PMID: 38138723 PMCID: PMC10744853 DOI: 10.3390/ma16247581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/28/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023]
Abstract
To investigate the comprehensive effects of the Al and Zr element contents on the microstructure evolution of the AlNbTiVZr series light-weight refractory high entropy alloys (HEAs), five samples were studied. Samples with different compositions were designated Al1.5NbTiVZr, Al1.5NbTiVZr0.5, AlNbTiVZr, AlNbTiVZr0.5, and Al0.5NbTiVZr0.5. The results demonstrated that the actual density of the studied HEA samples ranged from 5.291 to 5.826 g·cm-3. The microstructure of these HEAs contains a solid solution phase with a BCC structure and a Laves phase. The Laves phase was further identified as the ZrAlV intermetallic compound by TEM observations. The microstructure of the AlNbTiVZr series HEAs was affected by both the Al and Zr element contents, whereas the Zr element showed a more dominant effect due to Zr atoms occupying the core position of the ZrAlV Laves phase (C14 structure). Therefore, the as-cast Al0.5NbTiVZr0.5 sample exhibits the best room temperature compression property with a compression strength (σp) of 1783 MPa and an engineering strain of 28.8% due to having the lowest ZrAlV intermetallic compound area fraction (0.7%), as characterized by the EBSD technique.
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Affiliation(s)
- Hongwei Yan
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Rui Liu
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Shenglong Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yong’an Zhang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Wei Xiao
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Boyu Xue
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China; (H.Y.)
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Yu W, Nan X, Schroyen M, Wang Y, Xiong B. Inulin-induced differences on serum extracellular vesicles derived miRNAs in dairy cows suffering from subclinical mastitis. Animal 2023; 17:100954. [PMID: 37690274 DOI: 10.1016/j.animal.2023.100954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/24/2023] [Accepted: 08/03/2023] [Indexed: 09/12/2023] Open
Abstract
MicroRNA (miRNA) profiles vary with the nutritional and pathological conditions of cattle. In this study, we aimed to investigate the effects of inulin supplement on miRNA profiles derived from serum extracellular vesicles (EVs). Our goal was to determine the differences in miRNA expressions and analyse the pathways in which they are involved. Based on the results of California mastitis test and milk somatic cell counts, ten lactating cows with subclinical mastitis were randomly divided into two groups: an inulin group and a control group (n = 5 in each group). The inulin group received a daily supplement of 300 g of inulin while the control group did not receive any supplementation. After a 5-week treatment period, serum-derived EV-miRNAs from each cow were isolated. High-throughput sequencing was conducted to identify differentially expressed miRNAs. GO and KEGG bioinformatics analysis was performed to examine the target genes of these differentially expressed miRNAs. The EV-RNA concentration and small RNA content were not affected by the inulin treatment. A total of 162 known miRNAs and 180 novel miRNAs were identified from 10 samples in the two groups. Among the known miRNAs, 23 miRNAs were found to be differentially expressed between the two groups, with 18 upregulated and five downregulated in the inulin group compared to the control group. Pathway analysis revealed the involvement of these differentially expressed miRNAs in the regulation of cell structure and function, lipid oxidation and metabolism, immunity and inflammation, as well as digestion and absorption of nutrients. Overall, our study provides a molecular-level explanation for the reported beneficial health effects of inulin supplementation in cows with subclinical mastitis.
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Affiliation(s)
- W Yu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Precision Livestock and Nutrition Laboratory, Teaching and Research Centre (TERRA), Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium
| | - X Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - M Schroyen
- Precision Livestock and Nutrition Laboratory, Teaching and Research Centre (TERRA), Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium
| | - Y Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - B Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
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Zhang X, Yan L, Li Z, Li X, Gao G, Yan H, Wen K, Zhang Y, Xiong B. Effects of Cu Addition on Age Hardening Behavior and Mechanical Properties of High-Strength Al-1.2Mg-1.2Si Alloy. Materials (Basel) 2023; 16:3126. [PMID: 37109962 PMCID: PMC10142078 DOI: 10.3390/ma16083126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
In this study, the effects of Cu addition on artificial age hardening behavior and mechanical properties of Al-1.2Mg-1.2Si-(xCu) alloy was investigated quantitatively and qualitatively by Vickers hardness, tensile test, and transmission electron microscope. The results indicated that Cu addition enhanced the aging response of the alloy at 175 °C. With the increase in Cu content, the time for the alloys to reach peak aging decreased from 12 h to 10 h and 8 h. The tensile strength of the alloy was obviously improved with Cu added in which was 421 MPa of 0Cu alloy, 448 MPa of 0.18Cu alloy, and 459 MPa of 0.37Cu alloy. The results of TEM observation revealed that the addition of 0.37Cu changed the aging precipitation sequence of the alloy, in which the precipitation sequence of 0Cu and 0.18Cu alloy was SSSS→GP zones/pre-β″→β″→β″ + β', 0.37Cu alloy was SSSS→GP zones/pre-β″→β″ + L→β″ + L + Q'. Moreover, with the addition of Cu, the number density and volume fraction of precipitates of the Al-1.2Mg-1.2Si-(xCu) alloy was evidently increased. The number density was increased from 0.23 × 1023/m3 to 0.73 × 1023/m3 in the initial aging stage and from 1.9 × 1023/m3 to 5.5 × 1023/m3 in the peak aging stage. The volume fraction was increased from 0.27% to 0.59% in the early aging stage and from 4.05% to 5.36% in the peak aging stage. It indicated that Cu addition promoted the precipitation of strengthening precipitates and boosted the mechanical properties of the alloy accordingly.
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Affiliation(s)
- Xu Zhang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Lizhen Yan
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Guanjun Gao
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Hongwei Yan
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
| | - Kai Wen
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yongan Zhang
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Nonferrous Metals and Processes, China GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Liu XY, Chaisiri C, Lin Y, Fu YP, Yin WX, Zhu FX, Li JB, Xiong B, Wu H, Xu A, Luo CX. Effective Management of Citrus Melanose Based on Combination of Ecofriendly Chemicals. Plant Dis 2023; 107:1172-1176. [PMID: 36222721 DOI: 10.1094/pdis-03-22-0513-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Citrus melanose, caused by the ascomycete fungus Diaporthe citri, is one of the most important diseases in China that affects not only the production but also the quality of citrus. In China, mancozeb is recommended to control melanose disease at the dose of 1.34 g/liter. However, it is widely applied in practice at the dose of 2.66 g/liter or even 4 g/liter, because reduced efficacy of the recommended dose was observed in regions severely damaged by melanose. In this study, some ecofriendly chemicals for melanose management were evaluated. First, the sensitivity to fungicides was screened in the laboratory based on the inhibition of mycelial growth and conidial germination of D. citri. Results showed that both quinone outside inhibitor (QoI) fungicides kresoxim-methyl and trifloxystrobin inhibited conidial germination of D. citri up to 100% at 0.1 μg/ml. The in vivo control efficacy on detached fruit indicated that treatments with elastic nanocopolymer film at 2 g/liter, mancozeb at 1 g/liter, and kresoxim-methyl at 0.1 g/liter significantly inhibited the infection process compared with the control treatment of mineral oil alone. In field trials, the efficacy of kresoxim-methyl at 0.1 g/liter and elastic nanocopolymer film at 2 g/liter mixed with mancozeb at 1 g/liter was equal to that of mancozeb at 2.66 g/liter. The use of mancozeb could be reduced greatly, and the newly developed fungicide combinations are more environmentally friendly due to the low toxicity of both QoI fungicides and elastic nanocopolymer film. The newly developed method with ecofriendly chemicals should play an important role in the management of citrus melanose in the future.
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Affiliation(s)
- X Y Liu
- Key Lab of Horticultural Plant Biology, Ministry of Education, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - C Chaisiri
- Key Lab of Horticultural Plant Biology, Ministry of Education, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Y Lin
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Y P Fu
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - W X Yin
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - F X Zhu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - J B Li
- Nanfeng Citrus Research Institute, Nanfeng 344500, China
| | - B Xiong
- Nanfeng Citrus Research Institute, Nanfeng 344500, China
| | - H Wu
- Nanfeng Citrus Research Institute, Nanfeng 344500, China
| | - A Xu
- Nanfeng Citrus Research Institute, Nanfeng 344500, China
| | - C X Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Li H, Li X, Yan H, Li Y, Geng L, Xun C, Li Z, Zhang Y, Xiong B. Constitutive Analysis and Microstructure Characteristics of As-Homogenized 2198 Al-Li Alloy under Different Hot Compression Deformation Conditions. Materials (Basel) 2023; 16:ma16072660. [PMID: 37048953 PMCID: PMC10095716 DOI: 10.3390/ma16072660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 06/12/2023]
Abstract
The 2198 Al-Li alloy has unique superiority in mechanical performance and has been extensively used in the aerospace field. In this study, the hot deformation behavior of the 2198 Al-Li alloy was investigated on a Gleeble-1500 thermomechanical simulator with a strain rate of 0.01-10 s-1 in the temperature range of 330-510 °C. The Arrhenius constitutive equation of the alloy was established based on the true stress-strain curves to describe the rheology behaviors during the deformation of the alloy. The processing maps under the strain of 0.2-0.8 were constructed, which indicates the efficiency of power dissipation and instability of the deformed alloy. It was found that the instability domains are more likely to occur in the regions of low deformation temperature and high strain rate, corresponding to the high Zener-Hollomon (Z) parameter. The microstructure evolution of the studied alloy with different Z parameters was characterized. Then, the dynamic recrystallization (DRX) behavior was studied by electron backscatter diffraction, and the misorientation angle of deformed specimens was analyzed. The effect of different deformation temperatures and strain rates on the microstructure of the alloy and the behavior of dislocations and precipitations were investigated by transmission electron microscopy. The results demonstrate that continuous dynamic recrystallization (CDRX) and geomatic dynamic recrystallization (GDRX) mainly occur at the deformation conditions of a low Z value, and discontinuous dynamic recrystallization (DDRX) is likely to occur with increasing Z values.
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Affiliation(s)
- Huiyu Li
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Hongwei Yan
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yanan Li
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Libo Geng
- Southwest Aluminium (GROUP) Co., Ltd., Chongqing 401326, China
| | - Chenyang Xun
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yongan Zhang
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Wang J, Chen X, Sun L, Chen X, Li H, Xiong B, Wang H. [Long noncoding RNA ZEB1-AS1 aggravates cerebral ischemia/reperfusion injury in rats through the HMGB1/TLR-4 signaling axis]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:1134-1142. [PMID: 36073211 DOI: 10.12122/j.issn.1673-4254.2022.08.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the role of long non-coding RNA ZEB1-AS1 in cerebral ischemia/reperfusion injury (CI/RI). METHODS We detected the temporal changes of ZEB1-AS1 and HMGB1 expression using qPCR and Western blotting in SD rats following CI/RI induced by middle cerebral artery occlusion (MCAO). The rat models of CI/RI were subjected to injections of vectors for ZEB1-AS1 overexpression or knockdown into the lateral ventricle, and the changes in cognitive function, brain water content, blood-brain barrier integrity, and IL-1β and TNF-α levels in the cerebrospinal fluid (CSF) and serum were observed. Neuronal loss and cell apoptosis in the cortex of the rat models were detected by FJC and TUNEL methods, and HMGB1 and TLR-4 expressions were analyzed with Western blotting. We also examined the effects of ZEB1-AS1 knockdown on apoptosis and expressions of HMGB1 and TLR-4 in SH-SY5Y cells with oxygen-glucose deprivation/reoxygenation (OGD/R). RESULTS In CI/RI rats, the expressions of ZEB1-AS1 and HMGB1 in the brain tissue increased progressively with the extension of reperfusion time, reaching the peak levels at 24 h followed by a gradual decline. ZEB1-AS1 overexpression significantly aggravated icognitive impairment and increased brain water content, albumin content in the CSF, and IL-1β and TNF-α levels in the CSF and serum in CI/RI rats (P < 0.05), while ZEB1-AS1 knockdown produced the opposite effects (P < 0.05 or 0.01). ZEB1-AS1 overexpression obviously increased the number of FJC-positive neurons in the cortex and enhanced the expressions of HMGB1 and TLR-4 in the rat models (P < 0.01); ZEB1-AS1 knockdown significantly reduced the number of FJC-positive neurons and lowered HMGB1 and TLR-4 expressions (P < 0.01). In SH-SY5Y cells with OGD/R, ZEB1-AS1 knockdown significantly suppressed cell apoptosis and lowered the expressions of HMGB1 and TLR-4 (P < 0.01). CONCLUSION ZEB1-AS1 overexpression aggravates CI/RI in rats through the HMGB1/TLR-4 signaling axis.
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Affiliation(s)
- J Wang
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - X Chen
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - L Sun
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - X Chen
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - H Li
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - B Xiong
- College of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - H Wang
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
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Gao G, Li X, Xiong B, Li Z, Zhang Y, Li Y, Yan L. Microstructure, Precipitates Behavior, and Mechanical Properties of Age-Hardened Al-Mg-Si Alloy Sheet Fabricated by Twin-Roll Casting. Materials (Basel) 2022; 15:5638. [PMID: 36013775 PMCID: PMC9412303 DOI: 10.3390/ma15165638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/05/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Twin-roll casting (TRC), as a near-net-shape technology, is employed to fabricate age-hardened Al-Mg-Si alloy. Compared with conventional direct chill (DC) casting, the TRC method is much more economical and efficient. In this work, the microstructure, precipitates behavior, and mechanical properties of age-hardened Al-Mg-Si alloy sheet fabricated by TRC were investigated by hardness measurements and tensile tests, metallographic microscopy, field emission gun scanning electron microscope, electron backscatter diffraction, transmission electron microscopy, and differential scanning calorimetry analyses. It was found that the size of recrystallized grains for DC casting alloy with finely dispersed particles was larger than that of TRC alloy with coarse particles. Typical CubeND texture accompanied by P texture formed after solution treatment made the value of r reach ~0.7 in the TRC alloy due to the PSN effect caused by the segregation of particles. More GP zones resulted in the strength of TRC alloy being higher than that of DC casting alloy after T8X treatment. With the time of paint-bake hardening extended to 8 h, few segregation particles remained in the TRC alloy. This decreased the concentration of supersaturated atoms. The hardness of the TRC alloy with the lower density of the β″ strengthening phase was lower compared to the DC casting alloy.
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Affiliation(s)
- Guanjun Gao
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Xiwu Li
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Baiqing Xiong
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Zhihui Li
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yongan Zhang
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yanan Li
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Lizhen Yan
- State Key Laboratory of Non-Ferrous Metals and Processes, GRINM Group Co., Ltd., Beijing 100088, China
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
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Wang CY, Xiong B, Liu JC, Yang CT, Ju SG, Bai YW, Yao W, Wang YL. [Effect of underdilated stent on the occurrence of hepatic encephalopathy after transjugular intrahepatic portosystemic shunt creation]. Zhonghua Nei Ke Za Zhi 2022; 61:537-542. [PMID: 35488604 DOI: 10.3760/cma.j.cn112138-20211010-00685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate whether underdilated stent could reduce the occurrence of hepatic encephalopathy (HE) after transjugular intrahepatic portosystemic shunt (TIPS) creation. Methods: A total of 197 patients with decompensated liver cirrhosis, who had underwent TIPS creation at Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, were analyzed retrospectively, including 110 males and 87 females with age 25-79 (54±11) years old. Uncovered and covered stents with 8 mm diameter were implanted in all subjects, and then dilated by balloon catheters with 6 mm or 8 mm diameter. The patients were divided into two groups, including underdilated group (6 mm, n=105) and control group (8 mm, n=92).Kaplan-Meier curves were used to illustrate cumulative rate of HE, and the differences were assessed with the log-rank test. Multivariate analyses with a Cox regression model were conducted to explore the risk factors for HE. Results: During a median follow-up period of 29 (12-54) months, 16 (15.2%) patients developed HE in the underdilated group and 27 (29.3%) patients in the control group. There was a significant difference in the cumulative rate of HE (P=0.014), but no statistical differences were found in terms of variceal rebleeding, shunt dysfunction and survival between the two groups (P=0.608, P=0.659, P=0.968). In multivariated analysis, group assignment (underdilated vs. control, HR=0.291, 95%CI 0.125-0.674, P=0.004) was identified as an independent risk factor for HE after TIPS creation. Conclusion: Underdilated TIPS could reduced the risk of HE compared with completely dilated TIPS, with comparable risk of variceal rebleeding, shunt dysfunction and mortality. And it is worthy of applying this technique to a large sample of patients in clinical practice.
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Affiliation(s)
- C Y Wang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - B Xiong
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - J C Liu
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - C T Yang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - S G Ju
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Y W Bai
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - W Yao
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Y L Wang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
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Yu Z, Xiong B, Yang Z, Kong L, Wang F, Wang Y. 155P The addition of pyrotinib in early or locally advanced HER2-positive breast cancer patients with no response to two cycles of neoadjuvant therapy: A prospective, multicenter study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Bai J, Zhang X, Xiang ZX, Zhong PY, Xiong B. Identification of prognostic immune-related signature predicting the overall survival for colorectal cancer. Eur Rev Med Pharmacol Sci 2021; 24:1134-1141. [PMID: 32096169 DOI: 10.26355/eurrev_202002_20164] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The morbidity and mortality of patients with colorectal cancer, one of the most common malignant tumors worldwide, is steadily increasing. The aim of this study was to investigate the association between prognostic immune-related gene profile and the outcome of colorectal cancer in patients by analyzing datasets from The Cancer Genome Atlas (TCGA). MATERIALS AND METHODS Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) further demonstrated that these genes were enriched in many immune-related biological processes. Univariate Cox regression analysis was applied to examine the association of immune-related genes with the prognosis in patients with colorectal cancer. The least absolute shrinkage and selection operation (LASSO) Cox regression model was then used to establish the immune-related signature for the prognostic evaluation of colorectal cancer in patients. Survival differences were assessed by the Kaplan-Meier method along with the log-rank test. RESULTS A total of 133 prognostic immune-related signatures were identified by using the univariate Cox proportional hazards regression analysis. A 14-gene signature-based risk score was constructed using the LASSO Cox regression. According to the cut-off of the risk-score, patients were assigned to the low-risk and high-risk groups. The log-rank test suggested that the survival time of the low-risk group was significantly higher than that of the high-risk group. In the time-dependent ROC curve analysis, the AUC for 1-year, 3-year, and 5-year overall survival (OS) were 0.781, 0.742, and 0.791, respectively. GO and KEGG analysis further revealed that the gene sets were actively involved in immune and inflammatory response, as well as the cytokine-cytokine receptor interaction pathway. CONCLUSIONS To summarize, we identified a novel 14-gene immune-related signature that may potentially serve as a prognostic predictor for colorectal cancer, thereby contributing to patient personalized treatment decisions. Further research needs to be conducted to validate the prognostic value of the selected genes.
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Affiliation(s)
- J Bai
- Department of Gastrointestinal Surgery & Department of Gastric and Colorectal Surgical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China.
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Wang Y, Xiong B, Li Z, Zhang Y, Teng H. Precipitation Behavior of Al3(Sc,Zr) Particles in High-Alloyed Al–Zn–Mg–Cu–Zr–Sc Alloy During Homogenization. Arab J Sci Eng 2021. [DOI: 10.1007/s13369-020-05268-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hua D, Zhao Y, Nan X, Xue F, Wang Y, Jiang L, Xiong B. Effect of different glucogenic to lipogenic nutrient ratios on rumen fermentation and bacterial community in vitro. J Appl Microbiol 2020; 130:1868-1882. [PMID: 32998176 PMCID: PMC8247007 DOI: 10.1111/jam.14873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/22/2022]
Abstract
Aims This study was to investigate the effect of different ratios of glucogenic to lipogenic nutrients on rumen fermentation and the corresponding ruminal bacterial communities. Methods and Results Four diets, including glucogenic diet (G), lipogenic diet (L), two mixed diets: GL1 (G: L = 2 : 1) and GL2 (G:L = 1 : 2), served as substrates and were incubated with rumen fluid in vitro. The results revealed that the gas production, dry matter digestibility and propionate proportion were significantly increased by the G diet than others. The G diet increased the bacterial genera of Succinivibrionaceae_UCG_002, Succinivibrio, Selenomonas_1 and Ruminobacter but decreased some cellulolytic bacteria including the Eubacterium and several genera in family Ruminococcaceae than others. Conclusions When the glucogenic nutrient was above 1/3 of the dietary energy source among the four diets, the in vitro incubation had a higher feed digestibility and lower acetate to propionate ratio. Bacterial genera, including Selenomonas, Succinivibrio, Ruminobacter, certain genera in Ruminococcaceae, Christensenellaceae_R‐7_group and Eubacterium, were more sensitive to the glucogenic to lipogenic nutrients ratio. Significance and Impact of the Study The present study provides a new perspective about the effect of dietary glucogenic to lipogenic ingredient ratios on rumen metabolism by comparing end‐products, gas production and bacterial composition via an in vitro technique.
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Affiliation(s)
- D Hua
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.,Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, The Netherlands
| | - Y Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - X Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - F Xue
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L Jiang
- Beijing Key Laboratory for Dairy Cattle Nutrition, Beijing Agricultural College, Beijing, China
| | - B Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Xiong B, Shirai K, Matsumoto K, Abiko Y, Furuichi Y. The potential of a surface pre-reacted glass root canal dressing for treating apical periodontitis in rats. Int Endod J 2020; 54:255-267. [PMID: 32961600 DOI: 10.1111/iej.13414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 09/14/2020] [Indexed: 12/27/2022]
Abstract
AIM To evaluate the efficacy of a prototype root canal dressing containing surface pre-reacted glass-ionomer (S-PRG) fillers on repairing induced periapical lesions in a rat model. Calcium hydroxide [Ca(OH)2 ] was applied as a comparison in the healing process. METHODOLOGY The pulp chambers of the maxillary first molars in 64 male Wistar rats aged 16 weeks were opened to induce periapical lesions. After 28 days, the mesial canal of each tooth was prepared, irrigated with 2.5% sodium hypochlorite only (control group: irrigation) or followed by the respective dressing [Ca(OH)2 group, irrigation + Ca(OH)2 ; S-PRG group, irrigation + S-PRG] and restored with composite resin for 3 or 7 days (10/group). Four rats with healthy molars were used as blank controls. Descriptive analysis of the periapical radiographs, haematoxylin and eosin staining and immunohistochemical observation was performed 3 and 7 days after treatment. The periapical grey value, CD68 macrophages and osteoclasts (cathepsin-K) were quantified and statistically analysed with Tukey's honest significant difference test. A significant difference was achieved when P values were <0.05. RESULTS S-PRG and Ca(OH)2 dressings were associated with increased periapical grey values and inhibited osteoclast activity at 3 and 7 days; a significant difference in radiographic results and the number of osteoclasts was obtained at 3 and 7 days compared with the control group (P < 0.05). Reparative tissue was observed histologically in the space of the periapical resorbed necrotic area after S-PRG and Ca(OH)2 treatment for 3 and 7 days. The number of macrophages was significantly decreased at 3 and 7 days in the S-PRG and Ca(OH)2 specimens when compared with the controls (P < 0.05). CONCLUSIONS In a rat experimental model, the S-PRG root canal dressing was comparable to Ca(OH)2 in promoting the healing of experimentally induced periapical lesions. S-PRG paste has the potential to be used as an alternative intracanal dressing in teeth with apical periodontitis.
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Affiliation(s)
- B Xiong
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - K Shirai
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - K Matsumoto
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Y Abiko
- Division of Oral Medicine and Pathology, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Y Furuichi
- Division of Periodontology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
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Fu YR, Luo Y, Xie X, Lu W, Zhang R, Xiong B, Chen F. Nanoscale bubble delivered YCD-TK/Cx26 gene therapeutic system suppresses tumor growth by inducing necrosis of tumor tissues in mouse Xenograft bladder cancer models. Eur Rev Med Pharmacol Sci 2020; 23:7338-7349. [PMID: 31539120 DOI: 10.26355/eurrev_201909_18839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Bladder cancer is considered as the fifth most common cancer in the whole world. This study aimed to investigate the anti-tumor effects of Nanoscale bubbles delivered yeast cytosine deaminase thymidine kinase/connexin 26 (YCD-TK/Cx26) on tumor cell proliferation and tumor growth. MATERIALS AND METHODS Nanoscale bubble was prepared using thin-film hydration-sonication method. Nanoscale bubble-LV5-YCD-TK+PCD-Cx26 was generated and transfected into BIU-87 cells. MTT assay was employed to detect cell viability. Apoptosis was determined using a flow cytometry assay. YCD-TK and Cx26 expressions were detected using Western blot and Real Time-PCR (RT-PCR). BIU-87 cells were transplanted into mice to establish Xenograft models. The tumor volume was recorded. HE staining was used to examine necrosis areas in tumor tissues. RESULTS Nanoscale bubble (Nanoscale bubble-LV5-YCD-TK+PCD-Cx26) successfully mediated YCD-TK and Cx26 gene expression in BIU-87 cells. Nanoscale bubble delivered YCD-TK/Cx26 expression significantly inhibited cell viability and induced apoptosis compared to Nanoscale bubble-LV5-YCD-TK and Nanoscale bubble group (p<0.05). Nanoscale bubble delivered YCD-TK/Cx26 expression triggered significantly higher levels of bystander effect compared to single YCD-TK or single Cx26 gene (p<0.05). Nanoscale bubble delivered YCD-TK/Cx26 expression significantly reduced tumor volume in mouse Xenograft bladder cancer model compared to LV5-YCD-TK and 5-FC+GCV group (p<0.05). Nanoscale bubble delivered YCD-TK/Cx26 expression significantly reduced the necrosis of tumor tissues in mouse Xenograft bladder cancer model compared to LV5-YCD-TK group and 5-FC+GCV group (p<0.05). CONCLUSIONS Nanoscale bubble delivered YCD-TK/Cx26 gene therapeutic system efficiently reduced BIU-87 cell proliferation in vitro, and suppressed tumor growth by inducing necrosis of tumor tissues in mouse Xenograft bladder cancer models.
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Affiliation(s)
- Y-R Fu
- Department of Urology, The Peoples Hospital of Nanchuan Chongqing, Chongqing, China.
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Jin Y, Zhang ZL, Huang Y, Zhang KN, Xiong B. MiR-182-5p inhibited proliferation and metastasis of colorectal cancer by targeting MTDH. Eur Rev Med Pharmacol Sci 2020; 23:1494-1501. [PMID: 30840271 DOI: 10.26355/eurrev_201902_17107] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role and molecular mechanism of miR-182-5p in the development of colorectal cancer (CRC), thereby providing a theoretical basis for new CRC therapeutic targets. PATIENTS AND METHODS The expression of miR-182-5p in CRC clinical cases and biological cell lines was detected. On-line target gene prediction and Luciferase reporter gene assay were performed to screen and verify the target of miR-182-5p, respectively. The role of miR-182-5p in CRC cell function was further analyzed. RESULTS MiR-182-5p expression was significantly decreased in both CRC tissues and cell lines. Metadherin (MTDH) was screened and verified as a functional target of miR-182-5p. The cell proliferation, invasion and migration ability of CRC cells were significantly inhibited after the up-regulation of miR-182-5p. However, MTDH limited the anti-cancer effects of miR-182-5p in CRC cells. CONCLUSIONS Our research demonstrated the inhibitory function of miR-182-5p in CRC. Therefore, the miR-182-5p/MTDH axis was expected to be one of the targets of CRC targeted therapy.
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Affiliation(s)
- Y Jin
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
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Glass C, Davis R, Xiong B, Dov D, Glass M. The Use of Artificial Intelligence (AI) Machine Learning to Determine Myocyte Damage in Cardiac Transplant Acute Cellular Rejection. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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21
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Zhang Q, Yang Y, Yang P, Tan Y, Liu X, Xiong B, Qiu J. Cosmetic approach selection in parotidectomy for benign parotid gland tumour according to its location. J Plast Reconstr Aesthet Surg 2020; 73:921-926. [PMID: 32165143 DOI: 10.1016/j.bjps.2019.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/07/2019] [Accepted: 10/05/2019] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The aim of this study is to evaluate the feasibility and aesthetic results when comparing two cosmetic approaches that were employed in parotidectomy according to the tumour location with the traditional Blair approach. DESIGN Retrospective study. SETTING Tertiary Referral Centre. PATIENTS Seventy-six patients were included in the study. RESULTS The degree of satisfaction with the cosmetic incision approach was significantly higher than that with the traditional Blair approach. The incidence of transient facial paralysis and salivary fistula were not statistically significant when compared with those in the traditional incision in 6-month follow-up post-operatively. DISCUSSION Conventional parotidectomy using the traditional Blair incision (or its modification) usually leaves a visible scar in this region, which can have major adverse impacts on the social or psychological well-being of an individual. To achieve better aesthetic results, according to the location of the benign parotid tumour, two formal cosmetic approach incisions could be performed in parotidectomy, which was superior to the traditional Blair incision. The authors propose that these two cosmetic approaches for parotidectomy can be both technically feasible and safe.
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Affiliation(s)
- Q Zhang
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China.
| | - Y Yang
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - P Yang
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - Y Tan
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - X Liu
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - B Xiong
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - J Qiu
- Department of Oral & Maxillofacial Surgery, First Affiliated Hospital of Nanchang University, Jiangxi Province, China
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Zhang H, Zhang H, Xiong B, Fan G, Cao Z. Immunogenicity of recombinant outer membrane porin protein and protective efficacy against lethal challenge with
Bordetella bronchiseptica
in rabbits. J Appl Microbiol 2019; 127:1646-1655. [DOI: 10.1111/jam.14451] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/27/2019] [Accepted: 09/06/2019] [Indexed: 01/21/2023]
Affiliation(s)
- H. Zhang
- State Key Laboratory of Animal Genetic Engineering Vaccine YEBIO Bioengineering Co., Ltd. of Qingdao Qingdao China
| | - H. Zhang
- State Key Laboratory of Animal Genetic Engineering Vaccine YEBIO Bioengineering Co., Ltd. of Qingdao Qingdao China
| | - B. Xiong
- State Key Laboratory of Animal Genetic Engineering Vaccine YEBIO Bioengineering Co., Ltd. of Qingdao Qingdao China
| | - G. Fan
- State Key Laboratory of Animal Genetic Engineering Vaccine YEBIO Bioengineering Co., Ltd. of Qingdao Qingdao China
| | - Z. Cao
- State Key Laboratory of Animal Genetic Engineering Vaccine YEBIO Bioengineering Co., Ltd. of Qingdao Qingdao China
- Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao China
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Chen Y, Song XT, Yao YM, Huang L, An Z, Yuan J, Xiong B, Liu YH, Zhang YQ. [Mortality and influencing factors on injecting drug users with HIV/AIDS in Guizhou province, 1996-2015]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:765-769. [PMID: 31357795 DOI: 10.3760/cma.j.issn.0254-6450.2019.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the mortality and influencing factors on injecting drug users (IDUs) with HIV/AIDS, in Guizhou province, 1996-2015. Methods: A retrospective cohort study was conducted on IDUs with HIV/AIDS that were reported through national comprehensive HIV/AIDS information system, in Guizhou province during 1996-2015. Cox proportional hazard regression model was used to analyze the influencing factors on the mortality of HIV/AIDS. Results: A total of 3 958 cases of IDUs with HIV/AIDS were recruited in this study, with all-cause mortality rate of 44.01% (1 742/3 958) and total mortality rate of 7.80/100 person-years, respectively. The median survival time between diagnosis and death was 8.08 years. Mortality rate was 3.57/100 person-years in the group receiving antiretroviral therapy (ART). The mortality appeared to be 4.08/100 person-years in the group who were on methadone maintenance treatment (MMT). Data from the multiple regression analysis indicated that factors of gender, ethnicity, age when HIV/AIDS diagnosis was made, CD(4)(+)T lymphocyte (CD(4)) count at the first testing, ART and MMT were significantly associated with deaths among these people. The risk of death in females was 0.82 times (95%CI: 0.69-0.98) higher than that in males. The risk of deaths among the ethnic minority subjects was 1.39 times (95%CI: 1.21-1.60) higher than that of the Hans. The risk of death appeared to be 2.44 times higher (95%CI: 1.07-5.56) in the over-50-year of age group than in the <20 year-old group, when HIV/AIDS was diagnosed for the first time. The risk of death in CD(4) ≥500/μl group in the first time was 0.27 times (95%CI: 0.22-0.32) more than CD(4) <200/μl group in the firs time. The risk of death in cases who were treated with ART or MMT was 2.83 times (95%CI: 2.45-3.26) and 1.35 times (95%CI: 1.15-1.59) higher than those who did not receive any treatment, respectively. Conclusion: Higher risks on death seemed to be related to the following factors: being male, older age at the time of diagnosis, lower CD(4) at diagnosis, not on ART or MMT among the IDUs with HIV/AIDS in Guizhou province, between 1996-2015.
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Affiliation(s)
- Y Chen
- Guizhou Provincial Center for Disease Control and Prevention, Guiyang 550001, China
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Wang Y, Song S, Zhou G, Liu D, Xia X, Liang B, Xiong B, Liang H, Zheng C, Feng G. Strategy of endovascular treatment for renal artery aneurysms. Clin Radiol 2017; 73:414.e1-414.e5. [PMID: 29221720 DOI: 10.1016/j.crad.2017.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 11/05/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Y Wang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - S Song
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - G Zhou
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China.
| | - D Liu
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - X Xia
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - B Liang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - B Xiong
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - H Liang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - C Zheng
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - G Feng
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
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Zeng QL, Wang XM, Li SN, Xiong B, Jian M, Huang G, Wu YQ, Wang XH, Li J, Wen FQ, Zhou H. [Prevalence and clinical characteristics of blood eosinophilia in patients with acute exacerbation of chronic obstructive pulmonary disease]. Zhonghua Yi Xue Za Zhi 2017; 97:3166-3170. [PMID: 29081164 DOI: 10.3760/cma.j.issn.0376-2491.2017.40.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prevalence and clinical characteristics of peripheral blood eosinophilia (EOS) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods: From July 2014 to June 2016, AECOPD patients in the Department of Respiratory Medicine of Affiliated Hospital of Chengdu University, were retrospectively stratified into two groups according to two standards of eosinophilic exacerbations (the peripheral blood eosinophil count ≥2% or ≥3% on admission). Demography, clinical symptoms, laboratory results, length of stay, total hospitalization expenses, and defined daily expenses were compared between groups. Results: A total of 559 cases with AECOPD were finally recorded, the prevalence of eosinophilia was 43.1% (241 cases by EOS≥2%) and 27.2% (152 cases by EOS≥3%), respectively. According to either standard, there were no significant differences in sexes, age, course of disease (P>0.05), and there were no significant differences in global initiative for chronic obstructive lung disease (GOLD) grades, parameters of pulmonary function, modified british medical research council (mMRC) scores, rate of antibiotic use, systemic glucocorticoids administration, and average daily expenses (P>0.05). According to 2% standard, leucocytes, neutrophils, monocytes, hs-CRP were lower than non-eosinophilic patients [(5.9±2.0)×10(9)/L vs (8.2±4.0)×10(9)/L, (3.9±1.6)×10(9)/L vs (6.5±3.8)×10(9)/L, (0.446±0.169)×10(9)/L vs (0.501±0.276)×10(9)/L, (25.8±35.9) vs (46.2±55.6) mg/L, all P<0.01]; basophils, lymphocytes were higher than non-eosinophilic patients [(0.043±0.025)×10(9)/L vs (0.029±0.021) ×10(9)/L, (1.3±0.6) ×10(9)/L vs (1.1±0.6) ×10(9)/L, both P<0.01]; length of stay, total hospital expense were shorter (or lower) than non-eosinophilic patients [(10.6±5.0) vs (11.6±5.8) d, (11 851±7 491) vs (14 254±10 751) RMB, both P<0.05]. According to 3% standard, leucocytes, neutrophils, monocytes, hs-CRP were lower than non-eosinophilic patients (all P<0.05), and basophil were higher than non-eosinophilic patients (P<0.01), but no significant differences were observed in lymphocytes, length of stay and total hospital expense (all P>0.05). Conclusion: Eosinophilia is of relative high prevalence in AECOPD patients, and basophil in eosinophilic patients is higher than non-eosinophilic patients.
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Affiliation(s)
- Q L Zeng
- Department of Respiratory Medicine, Affiliated Hospital of Chengdu University, Chengdu 610081, China
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Ding X, Gao J, Xie C, Xiong B, Wu S, Cen Z, Lou Y, Lou D, Xie F, Luo W. Prevalence and clinical correlation of dysphagia in Parkinson disease: a study on Chinese patients. Eur J Clin Nutr 2017; 72:82-86. [DOI: 10.1038/ejcn.2017.100] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 04/23/2017] [Accepted: 05/09/2017] [Indexed: 11/09/2022]
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Zheng YH, Xiong B, Deng YY, Lai W, Zheng SY, Bian HN, Liu ZA, Huang ZF, Sun CW, Li HH, Luo HM, Ma LH, Chen HX. [Effects of allogeneic bone marrow mesenchymal stem cells on polarization of peritoneal macrophages in rats with sepsis]. Zhonghua Shao Shang Za Zhi 2017; 33:217-223. [PMID: 28427135 DOI: 10.3760/cma.j.issn.1009-2587.2017.04.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effects of allogeneic bone marrow mesenchymal stem cells (BMSCs) on polarization of peritoneal macrophages isolated from rats with sepsis induced by endotoxin/lipopolysaccharide (LPS). Methods: (1) BMSCs were isolated, cultured and purified from 5 SD rats with whole bone marrow adherent method. The third passage of cells were collected for morphologic observation, detection of expressions of stem cell surface markers CD29, CD44, CD45, and CD90 with flow cytometer, and identification of osteogenic and adipogenic differentiation. (2) Another 45 SD rats were divided into sham injury group (SI, n=5), LPS control group (LC, n=20), and BMSCs-treated group (BT, n=20) according to the random number table. Rats in groups LC and BT were injected with LPS (5 mg/kg) via tail vein to induce sepsis; rats in group SI were injected with the same amount of normal saline to simulate the damage. At post injury hour (PIH) 1, rats in group BT were given 1 mL BMSCs (2×10(6)/mL) via tail vein injection; rats in another two groups were injected with equal volume of phosphate buffer saline. Five rats in group SI at PIH 24 and in groups LC and BT at PIH 6, 12, 24, and 48 were sacrificed to harvest lung tissue for pathological observation with HE staining. In addition, rats in group SI at PIH 24 and in groups LC and BT at PIH 24 and 48 were simultaneously performed with intraperitoneal injection of low-glucose DMEM. Then peritoneal fluid was harvested to culture peritoneal macrophages. Flow cytometer was used to assess the positive expression of cell makers of macrophages including CD68 (making gate), CD11c, and CD206 in group SI at PIH 24 and in groups LC and BT at PIH 24 and 48. Data were processed with one-way analysis of variance and LSD test. Results: (1) The third passage of cells showed uniform fiber-like shape similar to fibroblasts. These cells showed positive expressions of CD29, CD44, CD90 and weak positive expression of CD45. They were able to differentiate into osteoblasts and adipocytes. These cells were identified as BMSCs. (2) At PIH 24, the structure of pulmonary alveoli of rats in group SI was clear and complete with no congestion or inflammatory cell infiltration. At PIH 6, the structure of pulmonary alveoli of rats in groups LC and BT was clear with a small amount of inflammatory cell infiltration, slight congestion and pulmonary interstitial thickening. At PIH 12, the inflammatory responses in lung tissue of rats in group LC were more severe than those in group BT with a large amount of inflammatory cell infiltration, serious congestion, and obvious pulmonary interstitial thickening. The pathological results of rats in group BT at PIH 12 was consistent with the results at PIH 6. At PIH 24, the pathological results of rats in groups LC and BT were similar to the results at PIH 12. At PIH 48, the structure of pulmonary alveoli tissue of rats in group LC was still severely disrupted, with a large number of inflammatory cell infiltration and congestion in lung tissue, but pulmonary interstitial thickening was slightly alleviated than before. The condition of rats in group BT nearly recovered to that in group SI. (3) At PIH 24, the positive expression rate of CD11c in peritoneal macrophages of rats in group LC [(83±10)%] was close to that in group BT [(87±7)%, P>0.05], and they were both significantly higher than the rate in group SI [(55±12)%, with P values below 0.01]. The positive expression rate of CD11c in peritoneal macrophages of rats in group LC [(59±11)%] at PIH 48 was close to that in group SI at PIH 24 (P>0.05), and they were both significantly higher than the rate in group BT [(20±11)%] at PIH 48 (with P values below 0.01). At PIH 24, the positive expression percentages of CD206 in peritoneal macrophages of rats were similar among the three groups (with P values above 0.05). The positive expression percentage of CD206 in peritoneal macrophages of rats in group SI at PIH 24 was close to that in group BT at PIH 48 (P>0.05), and they were both significantly lower than the percentage in group LC at PIH 48 (with P values below 0.01). Conclusions: BMSCs can reduce the pathological inflammatory responses in the lung of rats with sepsis and inhibit peritoneal macrophages from polarizing into M1 phenotype, whereas they can not promote macrophages to polarize into M2 phenotype.
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Affiliation(s)
- Y H Zheng
- Medical College of Shantou University, Shantou 515041, China
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Lu W, Qian C, Sun LT, Zhang XZ, Fang X, Guo JW, Yang Y, Feng YC, Ma BH, Xiong B, Ruan L, Zhao HW, Zhan WL, Xie D. High intensity high charge state ion beam production with an evaporative cooling magnet ECRIS. Rev Sci Instrum 2016; 87:02A738. [PMID: 26931956 DOI: 10.1063/1.4936183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
LECR4 (Lanzhou ECR ion source No. 4) is a room temperature electron cyclotron resonance ion source, designed to produce high current, high charge state ion beams for the SSC-LINAC injector (a new injector for sector separated cyclotron) at the Institute of Modern Physics. LECR4 also serves as a PoP machine for the application of evaporative cooling technology in accelerator field. To achieve those goals, LECR4 ECR ion source has been optimized for the operation at 18 GHz. During 2014, LECR4 ion source was commissioned at 18 GHz microwave of 1.6 kW. To further study the influence of injection stage to the production of medium and high charge state ion beams, in March 2015, the injection stage with pumping system was installed, and some optimum results were produced, such as 560 eμA of O(7+), 620 eμA of Ar(11+), 430 eμA of Ar(12+), 430 eμA of Xe(20+), and so on. The comparison will be discussed in the paper.
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Affiliation(s)
- W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - C Qian
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - L T Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Z Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Fang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - J W Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y Yang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y C Feng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B H Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - H W Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - W L Zhan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - D Xie
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Xiong B, Ruan L, Gu GB, Lu W, Zhang XZ, Zhan WL. The characteristic of evaporative cooling magnet for ECRIS. Rev Sci Instrum 2016; 87:02A719. [PMID: 26931937 DOI: 10.1063/1.4934635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Compared with traditional de-ionized pressurized-water cooled magnet of ECRIS, evaporative cooling magnet has some special characteristics, such as high cooling efficiency, simple maintenance, and operation. The analysis is carried out according to the design and operation of LECR4 (Lanzhou Electron Cyclotron Resonance ion source No. 4, since July 2013), whose magnet is cooled by evaporative cooling technology. The insulation coolant replaces the de-ionized pressurized-water to absorb the heat of coils, and the physical and chemical properties of coolant remain stable for a long time with no need for purification or filtration. The coils of magnet are immersed in the liquid coolant. For the higher cooling efficiency of coolant, the current density of coils can be greatly improved. The heat transfer process executes under atmospheric pressure, and the temperature of coils is lower than 70 °C when the current density of coils is 12 A/mm(2). On the other hand, the heat transfer temperature of coolant is about 50 °C, and the heat can be transferred to fresh air which can save cost of water cooling system. Two years of LECR4 stable operation show that evaporative cooling technology can be used on magnet of ECRIS, and the application advantages are very obvious.
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Affiliation(s)
- B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - G B Gu
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Z Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - W L Zhan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
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Xiong B, Lame O, Chenal JM, Rochas C, Seguela R. On the strain-induced fibrillar microstructure of polyethylene: Influence of chemical structure, initial morphology and draw temperature. EXPRESS POLYM LETT 2016. [DOI: 10.3144/expresspolymlett.2016.29] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wang ZM, Chen YY, Chen FF, Wang SY, Xiong B. Peri-operative chemotherapy for patients with resectable colorectal hepatic metastasis: A meta-analysis. Eur J Surg Oncol 2015; 41:1197-203. [DOI: 10.1016/j.ejso.2015.05.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 05/17/2015] [Accepted: 05/31/2015] [Indexed: 12/22/2022] Open
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Lu W, Sun LT, Qian C, Guo JW, Fang X, Feng YC, Yang Y, Ma HY, Zhang XZ, Ma BH, Xiong B, Guo SQ, Ruan L, Zhao HW. The development of a room temperature electron cyclotron resonance ion source (Lanzhou electron cyclotron resonance ion source No. 4) with evaporative cooling technology at Institute of Modern Physics. Rev Sci Instrum 2015; 86:043301. [PMID: 25933849 DOI: 10.1063/1.4916658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
LECR4 (Lanzhou electron cyclotron resonance ion source No. 4) has been successfully constructed at IMP and has also been connected with the Low Energy Beam Transport (LEBT) and Radio Frequency Quadrupole (RFQ) systems. These source magnet coils are cooled through evaporative cooling technology, which is the first attempt with an ECR ion source in the world. The maximum mirror field is 2.5 T (with iron plug) and the effective plasma chamber volume is 1.2 l. It was designed to be operated at 18 GHz and aimed to produce intense multiple charge state heavy ion beams for the linear injector project SSC-Linac at IMP. In February 2014, the first analyzed beam at 18 GHz was extracted. During about three months' commissioning, some outstanding results have been achieved, such as 1.97 emA of O(6+), 1.7 emA of Ar(8+), 1.07 emA of Ar(9+), and 118 euA of Bi(28+). The source has also successfully delivered O(5+) and Ar(8+) ion beams for RFQ commissioning in April 2014. This paper will give a brief overview of the design of LECR4. Then, the latest results of this source at 18 GHz will be presented.
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Affiliation(s)
- W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - L T Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - C Qian
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - J W Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Fang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y C Feng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y Yang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - H Y Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - X Z Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B H Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - S Q Guo
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - H W Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
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Xiong B, Tan K, Tan YQ, Gong F, Zhang SP, Lu CF, Luo KL, Lu GX, Lin G. Using SNP array to identify aneuploidy and segmental imbalance in translocation carriers. Genom Data 2014; 2:92-5. [PMID: 26484079 PMCID: PMC4535754 DOI: 10.1016/j.gdata.2014.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 11/06/2022]
Abstract
Translocation is one of the more common structural rearrangements of chromosomes, with a prevalence of 0.2%. The two most common types of chromosomal translocations, Robertsonian and reciprocal, usually result in no obvious phenotypic abnormalities when balanced. However, these are still associated with reproductive risks, such as infertility, spontaneous abortion and the delivery of babies with mental retardation or developmental delay. In recent years, array-based whole-genome amplification (WGA) technologies, including microarray comparative genomic hybridization (array CGH; aCGH) and single-nucleotide polymorphism (SNP) micro-arrays, have enabled the screening of every chromosome for whole-chromosome aneuploidy and segmental imbalance. These techniques have been shown to have clinical application for translocation carriers. Promising studies have indicated that array-based PGD of translocation carriers can lead to transfer pregnancy rates of 45–70% [2]. In addition to genetic testing techniques, the embryo biopsy stage (polar body, cleavage embryo or blastocyst) and the mode of embryo transfer (fresh or frozen embryos) can affect the outcome of PGD. It is now generally recommended that blastomere biopsy should be replaced by blastocyst biopsy to avoid a high mosaic rate and biopsy-related damage to cleavage-stage embryos, which might affect embryo development. However, more clinical data are required to confirm that the technique of SNP array-based PGD (SNP-PGD) combined with trophectoderm (TE) biopsy and frozen embryo transfer (FET) is superior to traditional FISH-PGD combined with Day 3 (D3) blastomere biopsy and fresh embryo transfer.
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Affiliation(s)
- B Xiong
- National Engineering and Research Center of Human Stem Cell, Changsha 410078, China
| | - K Tan
- National Engineering and Research Center of Human Stem Cell, Changsha 410078, China ; Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China
| | - Y Q Tan
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - F Gong
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - S P Zhang
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - C F Lu
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - K L Luo
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - G X Lu
- National Engineering and Research Center of Human Stem Cell, Changsha 410078, China ; Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
| | - G Lin
- National Engineering and Research Center of Human Stem Cell, Changsha 410078, China ; Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha 410078, China ; Key laboratory of Stem Cells and Reproductive Engineering, Ministry of Health, Changsha 410078, China ; Reproductive and Genetic Hospital of Citic-Xiangya, Changsha 410078, China
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Xiong B, Ma L, Cheng Y, Zhang C. Clinical effectiveness of neoadjuvant chemotherapy in advanced gastric cancer: an updated meta-analysis of randomized controlled trials. Eur J Surg Oncol 2014; 40:1321-30. [PMID: 25239442 DOI: 10.1016/j.ejso.2014.01.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 12/19/2013] [Accepted: 01/05/2014] [Indexed: 12/19/2022] Open
Abstract
AIMS To assess the efficacy and safety of neoadjuvant chemotherapy (NAC) for advanced gastric cancer (AGC). METHODS By searching electronic databases (PubMed, Embase, Cochrane Library) and ASCO proceedings from 1990 to 2012, all randomized controlled trials (RCTs) which compared the effect of NAC-combined surgery versus surgery alone in AGC were included. All calculations and statistical tests were performed using RevMan 5.0 software. RESULTS 12 RCTs with a total of 1820 patients were included. All patients had locally advanced but resectable gastric cancer and received NAC. NAC can slightly improve the survival rate (OR = 1.32, 95% confidence interval (CI): 1.07-1.64, P = 0.01), with little or no significant benefits in subgroup analyses between either different population or regimens. NAC can significantly improve the 3-year progression-free survival (PFS) (OR: 1.85, 95% CI: 1.39-2.46, p < 0.0001), tumor down-staging rate (OR: 1.71, 95% CI: 1.26, 2.33, p = 0.0006) and R0 resection rate (OR: 1.38, 95% CI: 1.08-1.78, P = 0.01) of patients with AGC. There was no difference between the two arms, in terms of relapse rates (OR: 1.03, 95% CI: 0.60-1.78, p = 0.92), operative complications (OR: 1.20, 95% CI: 0.90-1.58, p = 0.21), perioperative mortality (OR: 1.14, 95% CI: 0.64-2.05, p = 0.65) and grade 3/4 adverse effects: gastrointestinal problem (OR: 0.57, 95% CI: 0.25-1.30, p = 0.18), leukopenia (OR: 0.88, 95% CI: 0.41-1.91, p = 0.75), thrombocytopenia (OR: 1.27, 95% CI: 0.27-5.93, p = 0.76). CONCLUSION NAC is effective and safe. However, further prospective multi-national and multi-center RCTs are still needed in order to investigate the long-term oncological and functional outcomes to define the clinical benefits of NAC and the most effective strategies for AGC.
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Affiliation(s)
- B Xiong
- Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1, Youyi Road, Yuanjiagang, Yuzhong District, Chongqing 400016, PR China.
| | - L Ma
- Department of Internal Medicine, Chongqing Huaxi Hospital, Banan District, Chongqing 400054, PR China
| | - Y Cheng
- Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1, Youyi Road, Yuanjiagang, Yuzhong District, Chongqing 400016, PR China.
| | - C Zhang
- Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1, Youyi Road, Yuanjiagang, Yuzhong District, Chongqing 400016, PR China.
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Xiong B, Ruan L, Gu GB, Guo SQ, Cao R, Li ZG, Lu W, Zhang XZ, Sun LT, Zhao HW. Application of evaporative cooling technology in super-high power density magnet. Rev Sci Instrum 2014; 85:02A913. [PMID: 24593492 DOI: 10.1063/1.4827113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Evaporative cooling technology utilizes phase-change heat transfer mode to achieve the cooling for heating equipment. The heat transfer capacity of evaporative cooling technology is far more than air or water cooling technology. The Electron Cyclotron Resonance ion source magnet is a typical super-high power density magnet, and the evaporative cooling technology is an ideal cooling method for the coils of magnet. In this paper we show the structure and process of coils and the special design of flow channels of coolant for an experiment magnet model. Additionally, the heat transfer circulation is presented and analyzed. By the finite element method, the flow channels are optimized to rationally allocate coolant and to reduce the temperature of coils. For the experiment model, the current density of copper wire of coils is 19 A/mm(2), and the coil-windows current density is larger than 12 A/mm(2). The max temperature of coils is below 80 °C, and the total heat is about 200 kW.
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Affiliation(s)
- B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - G B Gu
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - S Q Guo
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - R Cao
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - Z G Li
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - W Lu
- Institute of Modern Physics, CAS, Lanzhou 73000, China
| | - X Z Zhang
- Institute of Modern Physics, CAS, Lanzhou 73000, China
| | - L T Sun
- Institute of Modern Physics, CAS, Lanzhou 73000, China
| | - H W Zhao
- Institute of Modern Physics, CAS, Lanzhou 73000, China
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Lu W, Xiong B, Zhang XZ, Sun LT, Feng YC, Ma BH, Guo SQ, Cao R, Ruan L, Zhao HW. Progress of a room temperature electron cyclotron resonance ion source using evaporative cooling technology at Institute of Modern Physics. Rev Sci Instrum 2014; 85:02A926. [PMID: 24593505 DOI: 10.1063/1.4827575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new room temperature ECR ion source, Lanzhou Electron Cyclotron Resonance ion source No. 4 (LECR4, previously named DRAGON), is under intense construction at Institute of Modern Physics. LECR4 is designed to operate with 18 GHz microwave frequency. The maximum axial magnetic fields are 2.3 T at injection and 1.3 T at extraction, and the radial field at the plasma chamber wall of 76 mm inner diameter is 1.0-1.2 T. One of the unique features for LECR4 is that its axial solenoids are winded with solid square copper wires which are immersed in a kind of special evaporative cooling medium for cooling purpose. Till now, a prototype of the cooling system has been successfully constructed and tested, which has demonstrated that the cooling efficiency of the designed system could meet the requirements of LECR4 under the routine operation conditions. All the main components of the ion source have been completed. Assembly and commissioning is ongoing. The latest developments and test results will be presented in this paper.
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Affiliation(s)
- W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B Xiong
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - X Z Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - L T Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - Y C Feng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - B H Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
| | - S Q Guo
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - R Cao
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - L Ruan
- Institute of Electrical Engineering, CAS, Beijing 100190, China
| | - H W Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China
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Xiong B, Lame O, Chenal J, Rochas C, Seguela R, Vigier G. In-situ SAXS study and modeling of the cavitation/crystal-shear competition in semi-crystalline polymers: Influence of temperature and microstructure in polyethylene. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.07.055] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chen F, Zhang D, Wang Y, Xiong B. Video-assisted thoracoscopic surgery lobectomy versus open lobectomy in patients with clinical stage Ⅰ non-small cell lung cancer: A meta-analysis. Eur J Surg Oncol 2013; 39:957-63. [DOI: 10.1016/j.ejso.2013.06.016] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/01/2013] [Accepted: 06/17/2013] [Indexed: 10/26/2022] Open
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Tan YQ, Tan K, Zhang SP, Gong F, Cheng DH, Xiong B, Lu CF, Tang XC, Luo KL, Lin G, Lu GX. Single-nucleotide polymorphism microarray-based preimplantation genetic diagnosis is likely to improve the clinical outcome for translocation carriers. Hum Reprod 2013; 28:2581-92. [DOI: 10.1093/humrep/det271] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lu W, Xie DZ, Zhang XZ, Xiong B, Ruan L, Sha S, Zhang WH, Cao Y, Lin SH, Guo JW, Fang X, Guo XH, Li XX, Ma HY, Yang Y, Wu Q, Zhao HY, Ma BH, Wang H, Zhu YH, Feng YC, Li JY, Li JQ, Sun LT, Zhao HW. Development of DRAGON electron cyclotron resonance ion source at Institute of Modern Physics. Rev Sci Instrum 2012; 83:02A328. [PMID: 22380175 DOI: 10.1063/1.3669800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A new room temperature electron cyclotron resonance (ECR) ion source, DRAGON, is under construction at IMP. DRAGON is designed to operate at microwaves of frequencies of 14.5-18 GHz. Its axial solenoid coils are cooled with evaporative medium to provide an axial magnetic mirror field of 2.5 T at the injection and 1.4 T at the extraction, respectively. In comparison to other conventional room temperature ECR ion sources, DRAGON has so far the largest bore plasma chamber of inner diameter of 126 mm with maximum radial fields of 1.4-1.5 T produced by a non-Halbach permanent sextupole magnet.
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Affiliation(s)
- W Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
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Du J, Chen T, Zou X, Xiong B, Lu G. Dppa2 knockdown-induced differentiation and repressed proliferation of mouse embryonic stem cells. J Biochem 2010. [DOI: 10.1093/jb/mvq045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Du J, Chen T, Zou X, Xiong B, Lu G. Dppa2 knockdown-induced differentiation and repressed proliferation of mouse embryonic stem cells. J Biochem 2009; 147:265-71. [DOI: 10.1093/jb/mvp161] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Liu B, Chen H, Lei ZY, Yu PF, Xiong B. Studies on anti-tumour activities of pseudolaric acid-B (PLAB) and its mechanism of action. J Asian Nat Prod Res 2006; 8:241-52. [PMID: 16864430 DOI: 10.1080/10286020500034360] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Pseudolaric acid-B (PLAB), a diterpene acid, was isolated from the root and trunk barks of Pseudolarix kaempferi. It showed antifungal and anti-fertility effects as well as cytotoxic activities in previous studies. The present study investigates cytotoxic activity on cultured human cancer cells, inhibition on the growth of transplantable tumours in mice and the mechanism of these actions. The experimental results showed that PLAB had potent cytotoxic effects on cancer cells derived from different tissues. MTT assay showed that its IC50 towards these tumour cells was 0.17 to 5.20 micromol/L, and towards one normal human kidney proximal tubular epithelial cell (HKC) was 5.77 micromol/L. Furthermore, the results of cell growth curve and colony formation of cancer cells matched the above results. The results in vivo demonstrated that PLAB significantly inhibited the growth of transplantable tumours, such as Lewis lung cancer and hepatocarcinoma 22 (H22) in mice. The inhibitory rate to H22 was 14.4% and 40.1%, and to Lewis lung cancer reached 39.1% and 47.0%, when PLAB was given by intraperitoneal injection (i.p.) at a dose of 30 mg/kg/day and 60 mg/kg/day for 10 days, respectively. It is suggested that PLAB also showed obvious anticancer activity in vivo. Inducing apoptosis by PLAB in HeLa cells was assessed by various morphological and biochemical characteristics, including cell shrinkage, chromatin condensation, membrane blebbing, formation of apoptotic bodies, and internucleosomal DNA fragmentation. A typical 'sub-G1 peak' was also checked through flow cytometry. These results were accompanied by up-regulating P53, down-regulating Bcl-2 and activating Caspase-3, which was revealed by Western blotting. PLAB also caused cell cycle arrest to G2/M phase in a dose-dependent manner. The experiments suggest that PLAB is a new potent anti-tumour agent.
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Affiliation(s)
- B Liu
- Medical College of Chinese People's Armed Police Forces, Department of Pharmacognosy, Chenglinzhuang Road, Tianjin 300162, China
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Newman TB, Xiong B, Gonzales VM, Escobar GJ. Prediction and prevention of extreme neonatal hyperbilirubinemia in a mature health maintenance organization. Arch Pediatr Adolesc Med 2000; 154:1140-7. [PMID: 11074857 DOI: 10.1001/archpedi.154.11.1140] [Citation(s) in RCA: 163] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To investigate biological and health services predictors of extreme neonatal hyperbilirubinemia in a health maintenance organization. DESIGN Nested case-control study. SETTING Eleven Northern California Kaiser Permanente hospitals. SUBJECTS The cohort consisted of 51,387 newborns born at 36 weeks or later weighing 2000 g or more. Cases were newborns with peak total serum bilirubin levels greater than or equal to 428 micromol/L (> or =25 mg/dL) (n = 73). Controls were a random sample of newborns from the cohort with peak bilirubin levels less than 428 micromol/L (<25 mg/dL) (n = 423). MEASUREMENTS Review of medical records and telephone interviews. RESULTS Early jaundice was most strongly associated with case status (odds ratio [OR] = 7.3). After excluding subjects with early jaundice, the strongest predictors of hyperbilirubinemia were family history of jaundice in a newborn (OR = 6.0), exclusive breastfeeding (OR = 5.7), bruising (OR = 4.0), Asian race (OR = 3.5), cephalhematoma (OR = 3.3), maternal age of 25 years or older (OR = 3.1), and lower gestational age (OR = 0.6/week). These variables identified 61% of newborns as very low risk (about 1/4200). However, the risk in the remaining 39% was still low (1/370). More cases (79%) than controls (59%) had newborn length-of-stay and follow-up consistent with the American Academy of Pediatrics guidelines, but phototherapy use within 8 hours of the time that the guidelines recommend was uncommon in both cases (26%) and controls (33%). There were no apparent cases of kernicterus. CONCLUSIONS Prevention of extreme hyperbilirubinemia may require closer follow-up than is currently recommended by the American Academy of Pediatrics and more use of phototherapy than was observed in this study. To prevent extreme hyperbilirubinemia (> or =428 micromol/L [> or =25 mg/dL]) in 1 newborn, many newborns would need to receive these interventions.
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Affiliation(s)
- T B Newman
- Department of Epidemiology, UCSF Box 0560, San Francisco, CA 94143, USA.
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Arnett DK, Xiong B, McGovern PG, Blackburn H, Luepker RV. Secular trends in dietary macronutrient intake in Minneapolis-St, Paul, Minnesota, 1980-1992. Am J Epidemiol 2000; 152:868-73. [PMID: 11085399 DOI: 10.1093/aje/152.9.868] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Trends in dietary macronutrient intake were evaluated in population-based surveys conducted in adults aged 25-74 years in 1980-1982, 1985-1987, and 1990-1992 in the seven-county Minneapolis-St. Paul metropolitan area. A 24-hour dietary recall (n = 6,499) was completed by a random 50% sample. The authors obtained energy intake for each macronutrient (protein, carbohydrate, fat, saturated fat, monounsaturated fat, polyunsaturated fat, and alcohol). Tine trends for percentage of total energy were analyzed using a generalized linear mixed model. While energy intake remained stable over time, macronutrient composition changed substantially. In 1980-1982, the caloric distribution for men comprised 15.8% protein, 39.4% fat, 40.9% carbohydrate, and 3.9% alcohol; similar findings were observed in women (15.7% protein, 38.9% fat, 43% carbohydrate, and 2.4% alcohol). From 1980 to 1992, total fat intake decreased 4.7% in men and 4.9% in women (p < 0.001). The decline was greatest for monounsaturated fat, although saturated and polyunsaturated fat intake also fell. During this same period, carbohydrate intake increased 5.7% and 5.8% in men and women, respectively (p < 0.001). Alcohol intake decreased in men and women (p < 0.01), while protein intake remained stable. In summary, the Minneapolis-St. Paul metropolitan area diet shifted substantially during the 1980s toward more carbohydrate and lower fat and alcohol intake.
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Affiliation(s)
- D K Arnett
- Division of Epidemiology, School of Public Health, University of Minnesota, Minneapolis 55454-1015, USA.
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Escobar GJ, Li DK, Armstrong MA, Gardner MN, Folck BF, Verdi JE, Xiong B, Bergen R. Neonatal sepsis workups in infants >/=2000 grams at birth: A population-based study. Pediatrics 2000; 106:256-63. [PMID: 10920148 DOI: 10.1542/peds.106.2.256] [Citation(s) in RCA: 138] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Few data are available on the outcome of neonatal sepsis evaluations in an era when intrapartum antibiotic therapy is common. METHODS We identified all newborns weighing >/=2000 g at birth who were ever evaluated for suspected bacterial infection at 6 Kaiser Permanente hospitals between October 1995 and November 1996, reviewed their records and laboratory data, and tracked them to 1 week after discharge. We analyzed the relationship between key predictors and the presence of neonatal bacterial infection. RESULTS Among 18 299 newborns >/=2000 g without major congenital anomalies, 2785 (15.2%) were evaluated for sepsis with a complete blood count and/or blood culture. A total of 62 (2.2%) met criteria for proven, probable, or possible bacterial infection: 22 (.8%) had positive cultures and 40 (1.4%) had clinical evidence of bacterial infection. We tracked all but 10 infants (.4%) to 7 days postdischarge. There were 67 rehospitalizations (2.4%; 2 for group B streptococcus bacteremia). Among 1568 infants who did not receive intrapartum antibiotics, initial asymptomatic status was associated with decreased risk of infection (adjusted odds ratio [AOR]:.26; 95% confidence interval [CI]:.11-.63), while chorioamnionitis (AOR: 2. 40; 95% CI: 1.15-5.00), low absolute neutrophil count (AOR: 2.84; 95% CI: 1.50-5.38), and meconium-stained amniotic fluid (AOR: 2.23; 95% CI: 1.18-4.21) were associated with increased risk. Results were similar among 1217 infants who were treated, except that maternal chorioamnionitis was not significantly associated with neonatal infection. CONCLUSIONS The risk of bacterial infection in asymptomatic newborns is low. Evidence-based observation and treatment protocols could be defined based on a limited set of predictors: maternal fever, chorioamnionitis, initial neonatal examination, and absolute neutrophil count. Many missed opportunities for treating mothers and infants exist.
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Affiliation(s)
- G J Escobar
- Kaiser Permanente Medical Care Program, Division of Research, Perinatal Research Unit, Oakland, California 94611, USA.
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Shen L, Xiong B, Cong R, Wang J. [Cibacron blue F3GA-attached 2 microns non-porous monodisperse silicas for affinity chromatography]. Se Pu 1999; 17:427-30. [PMID: 12552874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
Non-porous monodisperse silica (NPS), 2 microns in diameter, was modified with 3-aminopropyltriethoxysilane for immobilization of Cibacron Blue F3GA (CB), a packing of NPS-ACB for affinity chromatography was obtained. Up to 2 mg of CB could be attached to 1 mL of NPS beads. There was no obvious leakage of dye from NPS-ACB. Oval was not retained by the column, while Lys was specifically adsorbed. The adsorption of Lys varied with pH values and ionic strengths. In addition, alpha-globulin could not be retained by the packing, while beta- and gamma-globulin could be adsorbed on the column. gamma-Globulin was able to be eluted by 20% 1,6-hexanediol and 1 mol/L KCl, while beta-globulin was not able to be eluted by the same eluent. The difference in affinity interaction could be used to separate the three globulins. Furthermore, the column could be used for separation and preparation of Lys from hen egg white. The chromatograms of Lys on non-porous silica diethylamine column (NPS-DEA) showed that retention time of one peak of the crude Lys prepared was in accordance with Lys's, so it could be said that NPS-ACB column can be used for preparation in a small scale.
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Affiliation(s)
- L Shen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116012, China
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Yang B, Zhao M, Xiong B. [Histological study and stereologic analysis of membranous versus endochondral onlay bone grafts]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1999; 15:280-2. [PMID: 11593606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
OBJECTIVE The experimental study was to determine the differences in changes in the onlay bone grafts of different embryonic origin. METHODS The study was designed to compare the potential for appositional bone growth in membranous and endochondral onlay grafts in New-Zealand rabbits and a rhesus monkey. Results were assessed with volumetric measurement, histological examinations and stereologic analysis with double-fluorochrome labeling technique. RESULTS For the membranous and endochondral bone grafts, the volumetric retention rate was (78.4 +/- 3.5)% and (56.0 +/- 5.1)% respectively. The mineralization apposition rate (MAR) was (3.6 +/- 0.8) microns/d and (0.92 +/- 0.33) micron/d; the osteoid seam width (OSW) was (14.56 +/- 2.69) microns and (7.38 +/- 2.20) microns; the tetracycline uptake rate(TUA) was (91.22 +/- 2.69)% and (51.28 +/- 4.11)%, respectively. CONCLUSION 1. It was found that the membranous bone graft maintained its volume to a significantly greater extent than the endochondral bone graft; 2. Membranous bone grafts exhibited higher survival rate and greater activity than endochondral bone grafts; 3. Different changes were also found in the two recipient sites. There was more powerful bone regenerative reaction in the recipient bed of the membranous bone graft than the endochondral one.
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Affiliation(s)
- B Yang
- Plastic Surgery Hospital of Chinese Academy of Medical Sciences, BaDaChu, Beijing 100041
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