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Feng XY, Chen MJ, Xu Y, Zhong W, Liu XY, Gao XX, Zhao J, Wang MZ. [Clinical characteristics and prognosis analysis of pulmonary sarcomatoid carcinoma]. Zhonghua Jie He He Hu Xi Za Zhi 2024; 47:319-324. [PMID: 38599806 DOI: 10.3760/cma.j.cn112147-20231221-00387] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Objective: To summarize the clinical characteristics, treatment, and outcomes of patients with pulmonary sarcomatoid carcinoma (PSC) in order to improve clinicians' understanding of this disease. Methods: The clinical data of patients diagnosed with PSC in our hospital from January 1, 2015 to November 30, 2023 were retrospectively analyzed. According to whether radical resection was performed, the patients were divided into resectable group and unresectable group. The characteristics and treatments of PSC in different groups were compared. The survival curves were drawn by Kaplan-Meier method to compare the prognosis of different groups of patients. Results: A total of 43 PSC patients were included, including 32 males, with an average age of (62.79±9.59) years, and 31 smokers. Peripheral-type tumors were more common, with imaging showing predominantly solid soft tissue masses, and the maximum diameter of the tumor was more than 5 cm in 14 patients. Among the 23 patients who underwent NGS gene testing, the KRAS mutation rate was 43.5%, the TP53 mutation rate was 30.4%, and the MET mutation rate was 8.7%, all of which were MET-14 exon skipping mutations. PD-L1 expression was detected in 13 patients, 10 of whom showed high expression. The median overall survival (mOS) of the 43 patients with PSC was 24.6 months (13.0-52.7 months). Among them, 22 patients underwent radical lobectomy plus mediastinal lymph node dissection, 13 patients had postoperative recurrence, and 7 patients died during follow-up. The median disease-free survival (mDFS) was 12.3 months, the mOS was not achieved and the 1-year OS rate was 77.3 %. Twenty-one patients had unresectable locally advanced or advanced stage, and 15 patients died. The mDFS was 2.5 months, the mOS was 6.2 months, and the 1-year OS rate was 42.9 %. Seventeen patients received immunotherapy, and 1 patient received targeted therapy with the MET inhibitor glumetinib. Conclusions: PSC has a higher incidence in the elderly, smokers, and males, is highly malignant and has a poor prognosis. Based on its molecular biological characteristics, PD-L1 expression and tumor molecular detection can be performed to guide treatment options.
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Affiliation(s)
- X Y Feng
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - M J Chen
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Y Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - W Zhong
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X Y Liu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X X Gao
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - J Zhao
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - M Z Wang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Yang S, Shan FM, Li J, Feng XY, Wang FH. [Clinical efficacy of modified Yokoyama procedure with extraocular muscle transposition for high myopic eyes with restrictive esotropia]. Zhonghua Yan Ke Za Zhi 2024; 60:72-77. [PMID: 38199771 DOI: 10.3760/cma.j.cn112142-20231014-00139] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Objective: To investigate the clinical efficacy of the modified Yokoyama procedure with extraocular muscle transposition for high myopic eyes with restrictive esotropia. Methods: A retrospective case series study was conducted. Clinical data were collected from patients who underwent the modified Yokoyama procedure with extraocular muscle transposition for high myopic eyes with restrictive esotropia at Eye Hospital of Shandong First Medical University from February 2017 to February 2022. During the procedure, the superior rectus and lateral rectus muscles were fully separated. A longitudinal blunt incision was made in the central muscle belly extending posteriorly to 12-14 mm from the muscle insertion. The temporal half of the superior rectus muscle and the upper half of the lateral rectus muscle belly were transposed and secured to the contralateral muscle insertion. Simultaneously, medial rectus muscle recession was performed. Follow-up visits were conducted at 1 week, 1 month, 3 months, and 6 months postoperatively. Patients' ocular alignment, eye movements, improvement in compensatory head posture, objective degrees of strabismus using synoptophore, changes in extraocular muscles and globe position on orbital CT scan were recorded. Surgical complications were also documented. Results: Five patients (8 eyes) were included in this study, including 4 females (7 eyes) and 1 male (1 eye), with an average age of (63±11) years and an average axial length of (34.58±2.25) mm. The medial rectus muscle recession during surgery was (7.6±2.3) mm. Preoperatively, all patients had esotropia with a horizontal range of+15°to+45° and a vertical range of+15°to+45°. Significant limitations in lateral and upward gaze were observed, with a degree of restriction ranging from-3 (-4 to-1). Three patients with bilateral involvement and one patient with unilateral involvement exhibited significant compensatory head postures. One patient with unilateral involvement had no compensatory head posture. Preoperative orbital CT scans indicated nasal displacement of the superior rectus muscle and inferior displacement of the lateral rectus muscle, with the eyeball herniating from the muscle cone. At the 6-month follow-up, all patients achieved nearly orthophoric alignment. Objective degrees of horizontal strabismus ranged from-4°to+7°, and vertical strabismus ranged from 0°to +6°, as determined by synoptophore examination. Eye movements significantly improved, with a degree of restriction of-1 (-2 to-1) for lateral gaze and-2 (-3 to-1) for upward gaze. Compensatory head postures disappeared, and orbital CT scans indicated the eyeball was located within the muscle cone. There were no severe complications such as anterior segment ischemia, muscle adhesions, disease recurrence, secondary glaucoma, or globe penetration. Conclusion: The preliminary clinical outcomes of the modified Yokoyama procedure with extraocular muscle transposition for high myopic eyes with restrictive esotropia are promising.
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Affiliation(s)
- S Yang
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Jinan 250021, China
| | - F M Shan
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Jinan 250021, China
| | - J Li
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Jinan 250021, China
| | - X Y Feng
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Jinan 250021, China
| | - F H Wang
- Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, School of Ophthalmology, Shandong First Medical University, Jinan 250021, China
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Zhang ZY, Feng XY, Wang ZH, Huang YZ, Yang WB, Zhang WJ, Zhou J, Yuan ZY. [Similarities and differences of myocardial metabolic characteristics between HFpEF and HFrEF mice based on LC-MS/MS metabolomics]. Zhonghua Xin Xue Guan Bing Za Zhi 2023; 51:722-730. [PMID: 37460426 DOI: 10.3760/cma.j.cn112148-20230329-00182] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Objective: To reveal the similarities and differences in myocardial metabolic characteristics between heart failure with preserved ejection fraction (HFpEF) and heart failure with reduced ejection fraction (HFrEF) mice using metabolomics. Methods: The experimental mice were divided into 4 groups, including control, HFpEF, sham and HFrEF groups (10 mice in each group). High fat diet and Nω-nitroarginine methyl ester hydrochloride (L-NAME) were applied to construct a"two-hit"HFpEF mouse model. Transverse aortic constriction (TAC) surgery was used to construct the HFrEF mouse model. The differential expression of metabolites in the myocardium of HFpEF and HFrEF mice was detected by untargeted metabolomics (UHPLC-QE-MS). Variable importance in projection>1 and P<0.05 were used as criteria to screen and classify the differentially expressed metabolites between the mice models. KEGG functional enrichment and pathway impact analysis demonstrated significantly altered metabolic pathways in both HFpEF and HFrEF mice. Results: One hundred and nine differentially expressed metabolites were detected in HFpEF mice, and 270 differentially expressed metabolites were detected in HFrEF mice. Compared with the control group, the most significantly changed metabolite in HFpEF mice was glycerophospholipids, while HFrEF mice presented with the largest proportion of carboxylic acids and their derivatives. KEGG enrichment and pathway impact analysis showed that the differentially expressed metabolites in HFpEF mice were mainly enriched in pathways such as biosynthesis of unsaturated fatty acids, ether lipid metabolism, amino sugar and nucleotide sugar metabolism, glycerophospholipid metabolism, arachidonic acid metabolism and arginine and proline metabolism. The differentially expressed metabolites in HFrEF mice were mainly enriched in arginine and proline metabolism, glycine, serine and threonine metabolism, pantothenate and CoA biosynthesis, glycerophospholipid metabolism, nicotinate and nicotinamide metabolism and arachidonic acid metabolism, etc. Conclusions: HFpEF mice have a significantly different myocardial metabolite expression profile compared with HFrEF mice. In addition, biosynthesis of unsaturated fatty acids, arachidonic acid metabolism, glycerophospholipid metabolism and arginine and proline metabolism are significantly altered in both HFpEF and HFrEF mice, suggesting that these metabolic pathways may play an important role in disease progression in both types of heart failure.
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Affiliation(s)
- Z Y Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - X Y Feng
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Z H Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Y Z Huang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - W B Yang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - W J Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - J Zhou
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Z Y Yuan
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
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Yang JH, Wang S, Gan YX, Feng XY, Niu BL. Short-term prone positioning for severe acute respiratory distress syndrome after cardiopulmonary bypass: A case report and literature review. World J Clin Cases 2022; 10:13435-13442. [PMID: 36683626 PMCID: PMC9851014 DOI: 10.12998/wjcc.v10.i36.13435] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/22/2022] [Accepted: 12/05/2022] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Aortic dissection is a complex and dangerous cardiovascular disease, with many complications in the perioperative period, including severe acute respiratory distress syndrome (ARDS), which affects prognosis and increases mortality. Despite the effect of prone positioning (PP) in improving oxygenation in patients with severe ARDS, reports about PP early after cardiac surgery are few and such an option may be an issue in cardiac surgery patients because of the recent sternotomy.
CASE SUMMARY A 40-year-old male patient diagnosed with acute type A aortic dissection on October 22, 2021 underwent ascending artery replacement plus total aortic arch replacement plus stent elephant trunk implantation under cardiopulmonary bypass. Unfortunately, he developed ARDS on postoperative day 1. Despite comprehensive treatment with aggressive pulmonary protective ventilation, fluid management with continuous renal replacement therapy, the condition continued to deteriorate and rapidly progressed to severe ARDS with a minimum oxygenation index of 51. We are ready to implement salvage therapy, including PP and extracorporeal membrane oxygenation (ECMO). Due to the large amount of pericardial mediastinal and thoracic drainage after thoracotomy, ECMO may result in massive postoperative bleeding. Prolonged prone ventilation is often inappropriate after thoracotomy. Therefore, we chose short-term PP for < 6 h. Finally, the oxygenation index greatly improved and the diffuse exudation in both lungs of the patient was significantly reduced with short-term prone positioning.
CONCLUSION Intermittent short-term PP can improve early postoperative severe ARDS after acute aortic dissection.
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Affiliation(s)
- Jian-Hua Yang
- Department of Intensive Care Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing 400016, China
| | - Shu Wang
- Department of Intensive Care Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing 400016, China
| | - Yuan-Xiu Gan
- Department of Intensive Care Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing 400016, China
| | - Xuan-Yun Feng
- Department of Intensive Care Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing 400016, China
| | - Bai-Lin Niu
- Department of Intensive Care Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing 400016, China
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Feng XY, Zhang P, Nie H, Ji G, Yang B, Feng F, Wang SQ, Ma YM, Jiang K, Zhao QC. [A cognitive and attitude survey of the implementation of enhanced recovery after surgery in gastrointestinal surgery in China]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:621-624. [PMID: 35844125 DOI: 10.3760/cma.j.cn441530-20220413-00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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Bai H, Han L, Feng XY, Zhou YJ, Su RX, Wang Q, Liao LY, Zhu WX, Chen XZ, Pan F, Fan XL, Song C. Observation of Spin Splitting Torque in a Collinear Antiferromagnet RuO_{2}. Phys Rev Lett 2022; 128:197202. [PMID: 35622053 DOI: 10.1103/physrevlett.128.197202] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/22/2022] [Accepted: 04/15/2022] [Indexed: 06/15/2023]
Abstract
Current-induced spin torques provide efficient data writing approaches for magnetic memories. Recently, the spin splitting torque (SST) was theoretically predicted, which combines advantages of conventional spin transfer torque (STT) and spin-orbit torque (SOT) as well as enables controllable spin polarization. Here we provide the experimental evidence of SST in collinear antiferromagnet RuO_{2} films. The spin current direction is found to be correlated to the crystal orientation of RuO_{2} and the spin polarization direction is dependent on (parallel to) the Néel vector. These features are quite characteristic for the predicted SST. Our finding not only presents a new member for the spin torques besides traditional STT and SOT, but also proposes a promising spin source RuO_{2} for spintronics.
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Affiliation(s)
- H Bai
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - L Han
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X Y Feng
- The Key Lab for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
| | - Y J Zhou
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - R X Su
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Q Wang
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - L Y Liao
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - W X Zhu
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X Z Chen
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - F Pan
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X L Fan
- The Key Lab for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
| | - C Song
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Zhu LQ, Hu XK, Xu J, Li SZ, Feng XY. [Identification, molecular structure and expression characteristics of Torso like gene in Anopheles dirus]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:584-590. [PMID: 33325192 DOI: 10.16250/j.32.1374.2020257] [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: 11/27/2022]
Abstract
OBJECTIVE To characterize Torso-like (tsl) gene and investigate its expression characteristics in Anopheles dirus, so as to provide a theoretical basis for subsequent functional studies of the tsl gene. METHODS According to the coding sequences of Drosophila melanogaster and An. gambiae tsl genes, the complete genome of An. dirus was retrieved and the An. dirus tsl gene was characterized. Specific primers were designed and the target gene was amplified using PCR and reverse-transcription PCR assays. The physicochemical properties, signal peptide, transmembrane structure, secondary structure and tertiary structure of the encoded protein TSL were analyzed using bioinformatics tools, and a phylogenetic analysis was performed. In addition, the specific expression of the tls gene was detected in various tissues of An. dirus using a quantitative real-time PCR assay. RESULTS The An. dirus tsl gene was 16 751 bp in length with a CDS region of 1 134 bp, encoding 377 amino acids, and the encoded TSL protein was a stably hydrophilic protein. The TSL protein was predicted to be a secretory protein that was located in extra-membrane regions containing signal peptides. The secondary structure of the TSL protein contained α-helix (51.72%), extended strand (12.20%), β-bridge (4.78%) and random coil (31.30%) in the secondary structure, and a 3D homology model was generated using 5cj9.1.A as a template. Phylogenetic analysis revealed a close genetic relationship in the TSL protein between An. dirus and An. farauti. In addition, quantitative real-time PCR assay detected the tsl gene expression in the head, chest, abdomen and foot of An. dirus, with the highest expression in the head and low expression in the foot. CONCLUSIONS The tsl gene is characterized in An. dirus at a genomic level, and the prediction of the TSL protein structure and the elucidation of the tissue-specific tsl gene expression in An. dirus provide a basis for the further studies on the gene functions.
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Affiliation(s)
- L Q Zhu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, National Health Commission Key Laboratory of Parasites and Vector Biology, Shanghai 200025, China
| | - X K Hu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, National Health Commission Key Laboratory of Parasites and Vector Biology, Shanghai 200025, China
| | - J Xu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, National Health Commission Key Laboratory of Parasites and Vector Biology, Shanghai 200025, China
| | - S Z Li
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, National Health Commission Key Laboratory of Parasites and Vector Biology, Shanghai 200025, China.,One Health Center, Shanghai Jiaotong University School of Medicine, China
| | - X Y Feng
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, National Health Commission Key Laboratory of Parasites and Vector Biology, Shanghai 200025, China.,One Health Center, Shanghai Jiaotong University School of Medicine, China
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Feng XY, Dijkstra J, Bannink A, van Gastelen S, France J, Kebreab E. Antimethanogenic effects of nitrate supplementation in cattle: A meta-analysis. J Dairy Sci 2020; 103:11375-11385. [PMID: 32981733 DOI: 10.3168/jds.2020-18541] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 03/16/2020] [Accepted: 07/13/2020] [Indexed: 11/19/2022]
Abstract
Supplementing a diet with nitrate is regarded as an effective and promising methane (CH4) mitigation strategy by competing with methanogens for available hydrogen through its reduction of ammonia in the rumen. Studies have shown major reductions in CH4 emissions with nitrate supplementation, but with large variation in response. The objective of this study was to quantitatively investigate the effect of dietary nitrate on enteric CH4 production and yield and evaluate the variables with high potential to explain the heterogeneity of between-study variability using meta-analytical models. A data set containing 56 treatments from 24 studies was developed to conduct a meta-analysis. Dry matter (DM) intake, nitrate dose (g/kg of DM), animal body weight, roughage proportion of diet, dietary crude protein and neutral detergent fiber content, CH4 measurement technique, and type of cattle (beef or dairy) were considered as explanatory variables. Average DM intake and CH4 production for dairy cows (16.2 ± 2.93 kg/d; 311 ± 58.8 g/d) were much higher than for beef cattle (8.1 ± 1.57 kg/d; 146 ± 50.9 g/d). Therefore, a relative mean difference was calculated and used to conduct random-effect and mixed-effect model analysis to eliminate the large variations between types of animal due to intake. The final mixed-effect model for CH4 production (g of CH4/d) had 3 explanatory variables and included nitrate dose, type of cattle, and DM intake. The final mixed-effect model for CH4 yield (g of CH4/kg of DM intake) had 2 explanatory variables and included nitrate dose and type of cattle. Nitrate effect sizes on CH4 production (dairy: -20.4 ± 1.89%; beef: -10.1 ± 1.52%) and yield (dairy: -15.5 ± 1.15%; beef: -8.95 ± 1.764%) were significantly different between the 2 types of cattle. When data from slow-release nitrate sources were removed from the analysis, there was no significant difference in type of cattle anymore for CH4 production and yield. Nitrate dose enhanced the mitigating effect of nitrate on CH4 production and yield by 0.911 ± 0.1407% and 0.728 ± 0.2034%, respectively, for every 1 g/kg of DM increase from its mean dietary inclusion (16.7 g/kg of DM). An increase of 1 kg of DM/d in DM intake from its mean dietary intake (11.1 kg of DM/d) decreased the effect of nitrate on CH4 production by 0.691 ± 0.2944%. Overall, this meta-analysis demonstrated that nitrate supplementation reduces CH4 production and yield in a dose-dependent manner, and that elevated DM intake decreases the effect of nitrate supplementation on CH4 production. Furthermore, the stronger antimethanogenic effect on CH4 production and yield in dairy cows than in beef steers could be related to use of slow-release nitrate in beef cattle.
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Affiliation(s)
- X Y Feng
- Department of Animal Science, University of California, Davis 95616
| | - J Dijkstra
- Animal Nutrition Group, Wageningen University & Research, PO Box 338, 6700 AH, Wageningen, the Netherlands
| | - A Bannink
- Wageningen Livestock Research, Wageningen University & Research, PO Box 338, 6700 AH, Wageningen, the Netherlands
| | - S van Gastelen
- Wageningen Livestock Research, Wageningen University & Research, PO Box 338, 6700 AH, Wageningen, the Netherlands
| | - J France
- Centre for Nutrition Modelling, Department of Animal Biosciences, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - E Kebreab
- Department of Animal Science, University of California, Davis 95616.
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Feng XY, Tao XW, Zeng LK, Wang WQ, Li G. [Application of pulmonary ultrasound in the diagnosis of COVID-19 pneumonia in neonates]. Zhonghua Er Ke Za Zhi 2020; 58:347-350. [PMID: 32392948 DOI: 10.3760/cma.j.cn112140-20200228-00154] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the application of pulmonary ultrasound in the diagnosis of neonatal COVID-19. Methods: In this retrospective study, the clinical data of 5 infants, who were admitted to the Department of Neonatology in Wuhan Children's Hospital from 31(st) January to 25(th) February 2020, were collected. Bedsides pulmondary ultrasound was conducted on admission, during the hospitalization, and before discharge, the result were compared with the chest X-ray or CT done at the same time. Results: Among the 5 cases who aged 1-18 days, 3 were male. The main clinical manifestations were respiratory and gastrointestinal symptoms. The pulmonary ultrasonography on admission showed abnormal pleural line and pulmonary edema of different severity in all 5 cases, presented as increase and fusion of B-line, and pulmonary interstitial syndrome; among them, one case also had a small-range consolidation. The chest CT on admission showed no obvious parenchymal infiltration in 2 cases, small strip or patchy high-density shadow in 2 cases, and ground glass change in one case. The re-examination of ultrosound during the hospitalization and at discharge showed improvement in all cases and were consistent with the chest X-ray taken at the same time. Conclusions: The main changes on the pulmonary ultrasonography in neonates with COVID-19 pneumonia are increase and fusion of B-line, abnormal pleural line, and alveolar interstitial syndrome, and may coexist with small range of pulmonary consolidation. The sensitivity of pulmonary ultrasound is higher than that of chest X-ray and CT in the diagnosis of pulmonary edema, and could be used in monitoring and evaluation of the disease.
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Affiliation(s)
- X Y Feng
- Department of Ultrasound Imaging, Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - X W Tao
- Department of Neonatology, Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - L K Zeng
- Department of Neonatology, Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - W Q Wang
- Department of Ultrasound Imaging, Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - G Li
- Department of Ultrasound Imaging, Wuhan Children's Hospital of Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
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Lyu ZJ, Wu WL, Lin ZB, Liang WJ, Wang JJ, Zheng JB, Feng XY, Cai GF, Wu DQ, Li Y. [Feasibility and safety of the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:668-672. [PMID: 31302966 DOI: 10.3760/cma.j.issn.1671-0274.2019.07.012] [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 investigate the feasibility and safety of the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure. Methods: A retrospective cohort study was performed. Clinical data of 157 colorectal cancer patients undergoing the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure at Gastrointestinal Surgical Department of Guangdong Provincial People's Hospital from July 2015 to June 2018 were retrospectively analyzed. Of 157 cases, 17 were transverse colon cancer, 94 were descending colon cancer, 25 were sigmoid cancer and 21 were rectal cancer; 89 were male and 68 were female; mean age was (61.8±10.3) years and mean body mass index was (23.2±3.7) kg/m(2). The medial approach "four-step method" in the laparoscopic mobilization of splenic flexure was performed as follows: (1) The root vessels were treated with the "provocation" technique to expand the Toldt's gap. This expansion was extended from the lateral side to the peritoneum reflex of left colonic sulcus, from the caudal side to the posterior rectal space, and from the cephalad side to the lower edge of pancreas. (2) The left colonic sulcus was mobilized, converging with the posterior Toldt's gap. Mobilization was carried out from cephalad side to descending colon flexure, freeing and cutting phrenicocolic ligament and splenocolic ligament, and from caudal side to peritoneal reflex. (3) Gastrocolic ligament was moblized. Whether to enter the great curvature of stomach omentum arch when the gastrocolic ligament was cut, that was, whether to clean the fourth group of lymph nodes, should be according to the tumor site and whether serosal layer was invaded. (4) Transverse mesocolon was moblized and transected at the lower edge of the pancreatic surface, merging with the posterior Toldt's gap, and from lateral side to lower edge of the pancreatic body, merging with the lateral left paracolonic sulcus. Safety and short-term clinical efficacy of this surgical procedure was summarized. Results: All the patients completed this procedure. During operation, 3 cases were complicated with organ injury, including 1 case of colon injury, 1 case of spleen injury and 1 case of pancreas injury. No operative death and conversion to open surgery was found. The average operation time was (147.5±35.1) minutes, the average intra-operative blood loss was (40.8±32.7) ml and the average number of harvested lymph node was (16.1±5.8), including (4.0±2.3) of positive lymph nodes. The first exhaust time after surgery was (41.3±20.6) hours, the fluid intake time was (1.5±1.3) days, the postoperative hospital stay was (5.2±2.3) days. Eight (5.1%) cases developed postoperative complications, and all were improved and discharged after conservative treatments. According to the TNM classification system, postoperative pathology revealed that 31 patients were stage I, 51 were stage II, 53 were stage III, 22 were stage IV. Conclusion: The medial approach "four-step method" is safe and feasible, which can effectively decrease the operation difficulty of the laparoscopic mobilization of the splenic flexure.
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Affiliation(s)
- Z J Lyu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510060, China
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Qiao XL, Dong Y, Feng XY, Wang HQ, Jiang CM. Mechanism of high-fat diet-induced non-alcoholic fatty liver disease. J BIOL REG HOMEOS AG 2019; 33:163-167. [PMID: 30666860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- X L Qiao
- Department of Digestive Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Y Dong
- Department of Digestive Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - X Y Feng
- Department of Digestive Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - H Q Wang
- Department of Digestive Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - C M Jiang
- Department of Digestive Medicine, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
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Yang FW, Xin HM, Zhu JH, Feng XY, Jiang XC, Gong ZY, Tong YL. [Treatment of patients with different degree of acute respiratory distress syndrome caused by inhalation of white smoke]. Zhonghua Shao Shang Za Zhi 2018; 33:760-765. [PMID: 29275617 DOI: 10.3760/cma.j.issn.1009-2587.2017.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 summarize the treatment experience of patients with different degree of acute respiratory distress syndrome (ARDS) caused by inhalation of white smoke from burning smoke bomb. Methods: A batch of 13 patients with different degree of ARDS caused by inhalation of white smoke from burning smoke bomb, including 2 patients complicated by pulmonary fibrosis at the late stage, were admitted to our unit in February 2016. Patients were divided into mild (9 cases), moderate (2 cases), and serious (2 cases) degree according to the ARDS Berlin diagnostic criteria. Patients with mild and moderate ARDS were conventionally treated with glucocorticoid. Patients with severe ARDS were sequentially treated with glucocorticoid and pirfenidone, and ventilator-assisted breathing, etc. were applied. The vital signs, arterial oxygenation index, changes of lung imaging, pulmonary ventilation function, general condition, and the other important organs/systems function were timely monitored according to the condition of patients. The above indexes were also monitored during the follow-up time of 10-15 months post injury. Data were processed with SPSS 18.0 statistical software. Results: (1) The symptoms of respiratory system of patients with mild and moderate ARDS almost disappeared after 3 days' treatment. Their arterial oxygenation index was decreased from post injury day 1 to 4, which almost recovered on post injury day 7 and completely recovered one month post injury. The symptoms of respiratory system of patients with severe ARDS almost disappeared at tranquillization condition 1-3 month (s) post injury. Their arterial oxygenation index was decreased from post injury day 3 to 21, which gradually recovered 1-3 month (s) post injury and was normal 15 months post injury. (2) Within 24 hours post injury, there was no obvious abnormality or only a little texture enlargement of lung in image of chest CT or X-rays of patients with mild and moderate ARDS. One patient with moderate ARDS had diffuse patchy and ground-glass like increased density shadow (pulmonary exudation for short) at post injury hour 96. Chest iconography of all patients with mild and moderate ARDS showed no abnormalities 10 months post injury. Both lungs of each of the two patients with severe ARDS showed obvious pulmonary exudation at post injury hours 45 and 75, respectively. One patient with severe ARDS showed no abnormality in chest image 10 months post injury, but there was still a small mesh-like increased density shadow in double lobes with slight adhesion of pleura in the other patient with severe ARDS 15 months post injury. (3) All patients showed severe restrictive hypoventilation when admitted to hospital. Pulmonary ventilation function of patients with mild and moderate ARDS recovered to normal one month post injury, and they could do exercises like running, etc. Pulmonary ventilation function of one patient with severe ARDS recovered to normal 6 months post injury, and the patient could do exercises like running, etc. The other patient with severe ARDS showed mild restrictive hypoventilation 15 months post injury and could do exercises like rapid walking, etc. (4) The condition of all mild and one moderate ARDS patients was better on post injury day 3, and they were transferred to the local hospital for subsequent treatment and left hospital on post injury day 21. One patient with moderate ARDS healed and left hospital on post injury day 29. Patients with severe ARDS healed and left hospital on post injury day 81. During the follow-up time of 10-15 months post injury, the other important organs/systems of all patients showed no abnormality, and there was no adverse reaction of glucocorticoid like osteoporosis, femoral head necrosis, or metabolic disorder. Two patients with severe ARDS did not have any adverse reaction of pirfenidone like liver function damage, photosensitivity, anorexia, or lethargy. Conclusions: Early enough and uninterrupted application of glucocorticoid can significantly reduce the ARDS of patients caused by inhalation of white smoke from burning smoke bomb. Sequential application of glucocorticoid and pirfenidone can effectively treat pulmonary fibrosis at the late stage.
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Affiliation(s)
- F W Yang
- Department of Burns and Plastic Surgery, the 181st Hospital of PLA, Guilin 541002, China
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Fan TT, Feng XY, Yang YZ, Gao F, Liu Q. Downregulation of PI3K-γ in a mouse model of sepsis-induced myocardial dysfunction. Cytokine 2017; 96:208-216. [PMID: 28458167 DOI: 10.1016/j.cyto.2017.04.018] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 01/25/2023]
Abstract
A key component during sepsis is the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway, of which the PI3K-γ isoform is a major regulator in many inflammatory responses. However, the role of PI3K-γ in the development of sepsis-induced myocardial dysfunction (SIMD) is unknown. In this study, we established a model of SIMD induced by lipopolysaccharide (LPS), subsequently used the selective inhibitor LY294002 and AS605240 to block the effect of PI3K and PI3K-γ, respectively. Cardiac function was evaluated by echocardiography, hearts were obtained for histological and protein expression examinations. ELISA was used to measure the serum levels of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), cardiac troponin I (cTnI) and heart-type fatty acid binding protein (H-FABP). LPS-treated mice showed an increase to cardiac inflammation, myocardial damage and production of TNF-α, IL-6, NF-κB, cTnI and H-FABP. Administration of AS605240 to LPS-treated mice reduced some patho-physiological characteristics of SIMD and reduced TNF-α, IL-6, cTnI and H-FABP production. However, administration of LY294002 did not improve those same conditions. The results showed that PI3K-γ is likely a crucial element in SIMD by regulating the PI3K/Akt pathway, and become a new marker of myocardial injury. Inhibition of PI3K-γ might be a potential therapeutic target in SIMD.
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Affiliation(s)
- Ting-Ting Fan
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China; Department of Emergency, Chengdu First People's Hospital, Sichuan 610016, PR China
| | - Xuan-Yun Feng
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Yuan-Zheng Yang
- Department of Critical Care Medicine, The Affiliated Hospital of Hainan Medical College, Hainan 571101, PR China
| | - Feng Gao
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Qiong Liu
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
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Lin SH, Fu J, Wang CJ, Gao F, Feng XY, Liu Q, Cao J, Xu F. Inflammation elevated IL-33 originating from the lung mediates inflammation in acute lung injury. Clin Immunol 2016; 173:S1521-6616(16)30535-6. [PMID: 27989898 DOI: 10.1016/j.clim.2016.10.014] [Citation(s) in RCA: 14] [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: 12/03/2015] [Revised: 07/23/2016] [Accepted: 10/24/2016] [Indexed: 01/09/2023]
Abstract
Excessive inflammatory reactions occur with acute respiratory distress syndrome (ARDS), however, the underlying mechanisms of ARDS remain incompletely understood. Here we investigated whether interleukin (IL)-33 was elevated in ARDS patients. Serum samples were obtained from 14 ARDS patients and 24 control healthy volunteers. ELISA was used to measure the concentrations of IL-33. Besides, we established pulmonary ARDS and extrapulmonary ARDS models in mice, and serum and lung tissue samples were collected for analyses. The results showed that serum IL-33 concentrations were significantly higher in pulmonary ARDS patients compared to controls. Also, the levels of IFN-γ and IL-2 were positively correlated with IL-33 levels. We also showed that there were increased IL-33 levels in both the serum and lungs in the pulmonary ARDS model. This was not the case, however, in the extrapulmonary ARDS model. Pulmonary inflammation and injury in the pulmonary ARDS model was reduced with IL-33 neutralizing antibody treatment.
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Affiliation(s)
- Shi-Hui Lin
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Juan Fu
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Chuan-Jiang Wang
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Feng Gao
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Xuan-Yun Feng
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Qiong Liu
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Ju Cao
- Department ofLaboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Fang Xu
- Department of Emergency, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China.
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Gao F, Yang YZ, Feng XY, Fan TT, Jiang L, Guo R, Liu Q. Interleukin-27 is elevated in sepsis-induced myocardial dysfunction and mediates inflammation. Cytokine 2016; 88:1-11. [PMID: 27525353 DOI: 10.1016/j.cyto.2016.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 02/21/2016] [Revised: 08/01/2016] [Accepted: 08/06/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Interleukin (IL)-27 is an important cytokine involved in many human inflammatory diseases. In this study, we investigated its role in the pathogenesis of sepsis-induced myocardial dysfunction (SIMD). METHODS Twenty patients with SIMD and 24healthy donors were prospectively enrolled. Expression of IL-27 was detected in serum from SIMD patients by ELISA. Cardiac dysfunction was induced by administration of Escherichia coli lipopolysaccharide (LPS) to C57BL/6 (wild type) or IL-27R-/- mice. IL-27 mRNA in the myocardium was measured by RT-PCR. Cytokine levels in serum were determined by ELISA. RESULTS Expression of IL-27 in the serum was markedly increased in patients with SIMD compared with that in controls. Serum IL-27 levels and cardiac IL-27 mRNA expression were significantly increased after LPS injection compared with control specimens. Compared with wild-type mice, IL-27R-/- mice had higher expression of brain natriuretic peptide, cardiac troponin I, IL-6, IL-12, tumor necrosis factor-α and transforming growth factor-β. CONCLUSIONS IL-27 is an important protective mediator of SIMD.
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Affiliation(s)
- Feng Gao
- Department of Anesthesia, Stomatology Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401146, China.
| | - Yuan-Zheng Yang
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China; Department of Critical Care Medicine, The Affiliated Hospital of Hainan Medical College, No. 31 Hualong Road, Xinhua District, Hainan 571101, China.
| | - Xuan-Yun Feng
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China.
| | - Ting-Ting Fan
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China.
| | - Long Jiang
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China.
| | - Rui Guo
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China.
| | - Qiong Liu
- Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing 400016, China.
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Yu TG, Feng Y, Feng XY, Dai JZ, Qian HJ, Huang Z. Prognostic factor from MR spectroscopy in rat with astrocytic tumour during radiation therapy. Br J Radiol 2015; 88:20140418. [PMID: 25382247 DOI: 10.1259/bjr.20140418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To investigate the relationship between the tumour volume and metabolic rates of astrocytic tumours using MR spectroscopy (MRS) during radiation therapy (RT). METHODS 12 healthy male Sprague-Dawley® rats (Sprague-Dawley Animal Company, Madison, WI) were used, and a tumour model was created through injecting C6 tumour cells into the right caudate nuclei of the rats. Tumours grew for 18 days after the injection and before the imaging study and radiation treatment. MRS was performed with two-dimensional multivoxel point-resolved spectroscopy sequence using a GE Signa VH/i 3.0-T MR scanner (GE Healthcare, Milwaukee, WI) equipped with rat-special coil. RT was given on the 19th day with a dose of 4 Gy in one single fraction. The image examinations were performed before RT, and on the 4th, 10th, 14th and 20th days after treatment, respectively. GE FuncTool software package (GE Healthcare) was used for post-processing of spectrum. RESULTS Metabolic ratios of serial MRS decrease progressively with time after RT. Choline-containing components (Cho)/creatine and creatine phosphate (Cr) ratios immediately prior to RT differed significantly from those on the 10th, 14th and 20th days after RT; both Cho/N-acetyl aspartate (NAA) ratios and NAA/Cr ratios immediately prior to RT differed significantly from those on the 14th and 20th days after RT. A positive correlation between changes of tumour volume and changes of Cho/Cr, lipid and lactate/Cr and glutamate plus glutamine/Cr ratio was observed on the 4th day after RT. CONCLUSION MRS provides potential in monitoring tumour response during RT, and the imaging biomarkers predict the response of astrocytic tumours to treatment. ADVANCES IN KNOWLEDGE MRS is combined with both tumour size and Ki-67 labelling index to access tumour response to radiation.
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Affiliation(s)
- T G Yu
- 1 Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
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Kang DH, Guo LF, Guo T, Wang Y, Liu T, Feng XY, Che XQ. Association of body composition with bone mineral density in northern Chinese men by different criteria for obesity. J Endocrinol Invest 2015; 38:323-31. [PMID: 25252817 DOI: 10.1007/s40618-014-0167-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 08/19/2014] [Indexed: 12/13/2022]
Abstract
UNLABELLED With impressive economic development, obesity has emerged as a critical public health issue in China. Recently it was reported that obesity has taken an adverse effect on osteoporosis. Because there is different body mass index (BMI) for obesity globally, studies based on BMI levels on association of obesity with osteoporosis were quite few. Therefore, we discussed the relationship of body composition with skeletal BMD according to WHO BMI and BMI on Working Group on Obesity in China (WGOC). METHODS A total of 502 adult men aged 20-89 were enrolled as healthy subjects for osteoporosis study at Qianfoshan Hospital, Shandong University between September 2008 and August 2010. According to WHO BMI, all subjects were divided into three groups: normal weight (18.5 ≤ BMI < 25 kg/m(2), n = 202), overweight (25 ≤ BMI < 30 kg/m(2), n = 242), and obesity (BMI ≥ 30 kg/m(2), n = 58). According to WGOC BMI, normal weight (18.5 ≤ BMI < 24 kg/m(2), n = 137), overweight (24 ≤ BMI < 28 kg/m(2), n = 225), and obesity (BMI ≥ 28 kg/m(2), n = 140). Total body and regional BMD, lean mass (LM), lean body mass index (LBMI), fat mass (FM), percent body fat (%BF) and fat mass index (FMI) were measured by dual-energy X-ray absorptiometry. Age-partial Pearson correlation analyses between body composition-related parameters and BMD. Multiple regression analyses were performed to explore the associations of BMD with LM, LBMI, FM, %BF and FMI. RESULTS Fat mass (FM), %BF, FMI, LM and LBMI were positively correlated with BMD at almost sites (P < 0.001) in all subjects. However, the relationship was not different among groups. LM, LBMI, FM and FMI were positively correlated with BMD (P < 0.01) in normal weight. LM and LBMI appeared significantly positive with BMD in overweight and obesity according to WHO and WGOC criteria. %BF and FMI were negative significance with BMD at total body and some regional BMD according to WHO criteria in overweight (P < 0.05). In two obese groups, %BF appeared negatively significant with BMD (P < 0.05) according to WGOC criteria, and %BF and FMI appeared negatively significant with BMD (P < 0.05) according to WHO criteria. In regression of independent variables as FM and LM, LM showed statistically positively significant relations with BMD at almost sites (P < 0.05) in all groups. FM appeared positively significant with BMD in normal groups and overweight group according to WGOC criteria. In regression of independent variables as %BF and FMI, %BF and FMI appeared statistically negatively significant relations with BMD in overweight and obesity, but %BF and FMI were inconsistent in same site. CONCLUSIONS Lean mass (LM) and LBMI could help to determinant of BMD, and %BF and FMI were adverse to BMD in overweight and obesity. Comparing with two criteria, we found the differences in fat-related parameters and BMD according to WHO criteria were more obvious than that according to WGOC criteria. We also found that %BF and FMI were useful to research the relationship between osteoporosis and obesity at the same time.
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Affiliation(s)
- D H Kang
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China.
| | - L F Guo
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
| | - T Guo
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
| | - Y Wang
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
| | - T Liu
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
| | - X Y Feng
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
| | - X Q Che
- Department of Endocrinology, Qianfoshan Hospital, Shandong University, No. 16766 Jingshi Road, Jinan, 250014, China
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Li ZQ, Li JL, Feng XY, Xie N, Feng JB, Yue GH. Sixteen polymorphic microsatellites for breeding of Chinese soft-shelled turtles (Pelodiscus sinensis). Anim Genet 2010; 41:446-7. [PMID: 20331610 DOI: 10.1111/j.1365-2052.2010.02029.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Z Q Li
- Institute of Fisheries, Hangzhou Academy of Agriculture Science, 228 East Yuanpu Road, Hangzhou 310024, China.
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Feng QX, Wang W, Feng XY, Mei XP, Zhu C, Liu ZC, Li YQ, Dou KF, Zhao QC. Astrocytic activation in thoracic spinal cord contributes to persistent pain in rat model of chronic pancreatitis. Neuroscience 2010; 167:501-9. [PMID: 20149842 DOI: 10.1016/j.neuroscience.2010.02.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 01/27/2010] [Accepted: 02/02/2010] [Indexed: 12/31/2022]
Abstract
One of the most important symptoms in chronic pancreatitis (CP) is constant and recurrent abdominal pain. However, there is still no ideal explanation and treatment on it. Previous studies indicated that pain in CP shared many characteristics of neuropathic pain. As an important mechanism underlying neuropathic pain, astrocytic activation is probably involved in pain of CP. Based on the trinitrobenzene sulfonic acid (TNBS)-induce rat CP model, we performed pancreatic histology to assess the severity of CP with semiquantitative scores and tested the nociceptive behaviors following induction of CP. Glial fibrillary acidic protein (GFAP) expressions in the thoracic spinal cord were observed by immunohistochemistry and real-time reverse transcription polymerase chain reaction (RT-PCR). Meanwhile, we injected intrathecally astrocytic specific inhibitor l-alpha-aminoadipate (LAA) and observed its effect on nociception induced by CP. Compared to the naive and sham group, TNBS produced long lasting pancreatitis, and persistent mechanical hypersensitivity in the abdomen that was evident 1 week after TNBS infusion and persisted up to 5 weeks. Compared with naive or sham operated rats, GFAP staining was significantly increased 5 weeks after CP induction. Real-time RT-PCR indicated that GFAP expression was significantly increased in TNBS treated rats compared to the sham group. TNBS-induced astrocytic activation was significantly attenuated by LAA, compared with the saline control. Treatment with LAA significantly, even though not completely, attenuated the allodynia. Our results provide for the first time that astrocytes may play a critical role in pain of CP. Some actions could be taken to prevent astrocytic activation to treat pain in CP patients.
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Affiliation(s)
- Q X Feng
- Xijing Hospital of Digestive Diseases, Fourth Military Medical University, No. 169 West Changle Road, Xi'an, 710032, PR China
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Osawa T, Feng XY, Abe T, Hori H, Nozaka Y. Degeneration and regeneration of the lip mucosal epithelium after cryo treatment in mice. Cells Tissues Organs 2001; 169:144-51. [PMID: 11399854 DOI: 10.1159/000047872] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The process of degeneration and regeneration of the lip mucosal epithelium after cryo treatment was observed by transmission electron microscopy. The epithelial cells were degenerated by the formation of ice crystals and subsequently detached from the basement membrane, forming a blister cavity. The separation occurred between the epithelial cells and the lamina densa, leaving a small amount of cell debris on the lamina densa. The surviving cells at the periphery of the blister cavity, especially the cells in the basal half of the epithelium, provided the regeneration cells. They migrated over the cell debris, attached to the lamina densa and gradually phagocytozed it. Finally, they formed hemidesmosomes with the old lamina densa. The connections between the epithelial cells by desmosomes were so tight that desmosomes were preserved even between dead cells and between dead and living cells. Regenerating cells were moving in a multilayered form, remaining connected to each other by the dosmosomes. They were seen to divide by mitosis and thereby increase the number of the cell layer, whilst maintaining their connections with the neighbouring cells.
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Affiliation(s)
- T Osawa
- Oral Anatomy I, Iwate Medical University School of Dentistry, Morioka, Iwate, Japan.
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Feng XY, Dong ZX. [Zoological origin of earthworms for medicinal use]. Zhong Yao Tong Bao 1987; 12:3-6, 62. [PMID: 3449239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Feng XY. [Cooperative technic of radical rectum extirpation in the operating room]. Zhonghua Hu Li Za Zhi 1983; 18:333-335. [PMID: 6561086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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