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Hu WQ, Cui P, Song DY. [Quality control for standard specimen processing after gastric cancer surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:163-166. [PMID: 38413084 DOI: 10.3760/cma.j.cn441530-20231213-00216] [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: 02/29/2024]
Abstract
Gastric cancer is one of the most common malignant tumors in China. Currently, the surgery-based procedure is still the most acceptable strategy for treating gastric cancer. As an important part of standardized management, appropriate specimen processing following surgery is receiving more and more attention across the world. With the release of guidelines and consensus on the specimens processing after gastric cancer surgery, several centers in China have started to follow this standard procedure. However, due to differences in understanding the consensus and the degree of surgery practice, the results are variable. This paper will focus on reviewing every aspect of the processing procedure, with the hope that the concept and skill involved can be popularized in clinical operations. Hopefully this will help promote the development of high-quality gastric cancer surgery in China.
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Affiliation(s)
- W Q Hu
- Department of Gastrointestinal Surgery, Changzhi People's Hospital Affiliated to Changzhi Medical College, Clinical Medical Research Center for Malignant Tumor (Esophagogastric junction carcinoma) of Shanxi Province, Changzhi 046099, China
| | - P Cui
- Department of Gastrointestinal Surgery, Changzhi People's Hospital Affiliated to Changzhi Medical College, Clinical Medical Research Center for Malignant Tumor (Esophagogastric junction carcinoma) of Shanxi Province, Changzhi 046099, China
| | - D Y Song
- Department of Gastrointestinal Surgery, Changzhi People's Hospital Affiliated to Changzhi Medical College, Clinical Medical Research Center for Malignant Tumor (Esophagogastric junction carcinoma) of Shanxi Province, Changzhi 046099, China
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Zhang HS, Chang XT, Wu PH, Song DY, Ge G, Ding W, Hu ZW, Wang GF, Jiang YW, Ye LP. [Clinical analysis of 11 cases multisystem inflammatory syndrome associated with SARS-CoV-2 Omicron variant infection in children]. Zhonghua Er Ke Za Zhi 2024; 62:55-59. [PMID: 38154978 DOI: 10.3760/cma.j.cn112140-20231021-00309] [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: 12/30/2023]
Abstract
Objective: To explore the clinical characteristics, diagnosis, treatment, and follow-up of multisystem inflammatory syndrome in children (MIS-C) related to SARS-CoV-2 Omicron variant infection. Methods: A retrospective analysis was conducted on clinical data of 11 children with MIS-C, who were admitted to the Department of Pediatrics of Peking University First Hospital from December 2022 to January 2023. Clinical characteristics, treatment, and follow-up of MIS-C were summarized in this study. Results: The 11 cases contained 7 boys and 4 girls, with an age of 4.4 (2.0, 5.5) years on admission. All the patients had fever, with a duration of 7(5, 9) days. Other clinical manifestations included rash in 7 cases, conjunctival hyperemia in 5 cases, red lips and raspberry tongue in 3 cases, lymphadenopathy in 3 cases, and swollen fingers and toes in 2 cases. There were 8 cases of digestive symptoms, 8 cases of respiratory symptoms, and 3 cases of nervous system symptoms. Eight patients had multi-system injuries, and one of them had shock presentation. All 11 patients were infected with SARS-CoV-2 Omicron BF.7 variant. The laboratory examination results showed that all cases had elevated inflammatory indicators, abnormal coagulation function and myocardial damage. Six patients had elevated white blood cell counts, 5 cases had liver function abnormalities, 3 cases had kidney function abnormalities, and 8 cases had coronary artery involvement. All 11 patients received anti-infection treatment, of which 3 cases received only 2 g/kg intravenous immunoglobulin (IVIG), while the remaining 8 cases received a combination of IVIG and 2 mg/(kg·d) methylprednisolone. Among the 8 cases with coronary artery disease, 6 cases received low molecular weight heparin anticoagulation therapy. All patients were followed up in 2 weeks after being discharged, and their inflammatory markers had returned to normal by that time. The 8 cases with coronary artery disease and 3 cases with pneumonia showed significant improvement or back to normal at the 4-week follow-up. All patients had no new complications or comorbidities during follow-up of more than 3 months. Conclusions: MIS-C may present with Kawasaki disease-like symptoms, with or without gastrointestinal, neurological, or respiratory symptoms. Elevated inflammatory markers, abnormal coagulation function, and cardiac injury contribute to the diagnosis of MIS-C. IVIG and methylprednisolone were the primary treatments for MIS-C, and a favorable short-term prognosis was observed during a follow-up period of more than 3 months.
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Affiliation(s)
- H S Zhang
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - X T Chang
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - P H Wu
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - D Y Song
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - G Ge
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - W Ding
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - Z W Hu
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
| | - G F Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
| | - Y W Jiang
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
| | - L P Ye
- Department of Pediatric, Peking University First Hospital, Beijing 100034, China
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Sutera PA, Shetty AC, Hakansson A, Van der Eecken K, Song Y, Liu Y, Chang J, Fonteyne V, Mendes AA, Lumen N, Delrue L, Verbeke S, De Man K, Rana Z, Hodges T, Hamid A, Roberts N, Song DY, Pienta K, Ross AE, Feng F, Joniau S, Spratt D, Gillessen S, Attard G, James ND, Lotan T, Davicioni E, Sweeney C, Tran PT, Deek MP, Ost P. Transcriptomic and clinical heterogeneity of metastatic disease timing within metastatic castration-sensitive prostate cancer. Ann Oncol 2023; 34:605-614. [PMID: 37164128 PMCID: PMC10330666 DOI: 10.1016/j.annonc.2023.04.515] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Metastatic castration-sensitive prostate cancer (mCSPC) is commonly classified into high- and low-volume subgroups which have demonstrated differential biology, prognosis, and response to therapy. Timing of metastasis has similarly demonstrated differences in clinical outcomes; however, less is known about any underlying biologic differences between these disease states. Herein, we aim to compare transcriptomic differences between synchronous and metachronous mCSPC and identify any differential responses to therapy. PATIENTS AND METHODS We performed an international multi-institutional retrospective review of men with mCSPC who completed RNA expression profiling evaluation of their primary tumor. Patients were stratified according to disease timing (synchronous versus metachronous). The primary endpoint was to identify differences in transcriptomic profiles between disease timing. The median transcriptomic scores between groups were compared with the Mann-Whitney U test. Secondary analyses included determining clinical and transcriptomic variables associated with overall survival (OS) from the time of metastasis. Survival analysis was carried out with the Kaplan-Meier method and multivariable Cox regression. RESULTS A total of 252 patients were included with a median follow-up of 39.6 months. Patients with synchronous disease experienced worse 5-year OS (39% versus 79%; P < 0.01) and demonstrated lower median androgen receptor (AR) activity (11.78 versus 12.64; P < 0.01) and hallmark androgen response (HAR; 3.15 versus 3.32; P < 0.01). Multivariable Cox regression identified only high-volume disease [hazard ratio (HR) = 4.97, 95% confidence interval (CI) 2.71-9.10; P < 0.01] and HAR score (HR = 0.51, 95% CI 0.28-0.88; P = 0.02) significantly associated with OS. Finally, patients with synchronous (HR = 0.47, 95% CI 0.30-0.72; P < 0.01) but not metachronous (HR = 1.37, 95% CI 0.50-3.92; P = 0.56) disease were found to have better OS with AR and non-AR combination therapy as compared with monotherapy (P value for interaction = 0.05). CONCLUSIONS We have demonstrated a potential biologic difference between metastatic timing of mCSPC. Specifically, for patients with low-volume disease, those with metachronous low-volume disease have a more hormone-dependent transcriptional profile and exhibit a better prognosis than synchronous low-volume disease.
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Affiliation(s)
- P A Sutera
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - A C Shetty
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, USA; Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | | | - K Van der Eecken
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - Y Song
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, USA; Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | | | - J Chang
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | - V Fonteyne
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - A A Mendes
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - N Lumen
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - L Delrue
- Department of Radiology, Ghent University Hospital, Ghent, Belgium
| | - S Verbeke
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - K De Man
- Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Z Rana
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | - T Hodges
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, USA; Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | - A Hamid
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, USA
| | - N Roberts
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins Medical Institutions, Baltimore, USA
| | - D Y Song
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, USA; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, USA; James Buchanan Brady Urological Institute, Johns Hopkins School of Medicine, Baltimore, USA
| | - K Pienta
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, USA; James Buchanan Brady Urological Institute, Johns Hopkins School of Medicine, Baltimore, USA
| | - A E Ross
- Department of Urology, Northwestern University, Chicago, USA
| | - F Feng
- Department of Medicine, UCSF, San Francisco, USA; Department of Urology, UCSF, San Francisco, USA; Department of Radiation Oncology, UCSF, San Francisco, USA
| | - S Joniau
- Department of Urology, Catholic University Leuven, Leuven, Belgium
| | - D Spratt
- Department of Radiation Oncology, University Hospitals, Cleveland, USA
| | - S Gillessen
- Istituto Oncologico della Svizzera Italiana, Bellinzona, Switzerland
| | - G Attard
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - N D James
- The Royal Marsden Hospital NHS Foundation Trust, London, UK; The Institute of Cancer Research, London, UK
| | - T Lotan
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA
| | | | - C Sweeney
- South Australian Immunogenomics Cancer Institute, University of Adelaide, Adelaide, Australia
| | - P T Tran
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, USA; Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, USA
| | - M P Deek
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, USA.
| | - P Ost
- Department of Radiation Oncology, Iridium Network, Antwerp, Belgium; Department of Human Structure and Repair, Ghent University, Ghent, Belgium.
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Tan DD, Liu YD, Fan YB, Wei CJ, Song DY, Yang HP, Pan H, Cui WL, Mao SS, Xu XP, Yu XL, Cui B, Xiong H. [Clinical and genetic characteristics of 9 rare cases with coexistence of dual genetic diagnoses]. Zhonghua Er Ke Za Zhi 2023; 61:345-350. [PMID: 37011981 DOI: 10.3760/cma.j.cn112140-20220922-00827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Objective: To analyze the clinical and genetic characteristics of pediatric patients with dual genetic diagnoses (DGD). Methods: Clinical and genetic data of pediatric patients with DGD from January 2021 to February 2022 in Peking University First Hospital were collected and analyzed retrospectively. Results: Among the 9 children, 6 were boys and 3 were girls. The age of last visit or follow-up was 5.0 (2.7,6.8) years. The main clinical manifestations included motor retardation, mental retardation, multiple malformations, and skeletal deformity. Cases 1-4 were all all boys, showed myopathic gait, poor running and jumping, and significantly increased level of serum creatine kinase. Disease-causing variations in Duchenne muscular dystrophy (DMD) gene were confirmed by genetic testing. The 4 children were diagnosed with DMD or Becker muscular dystrophy combined with a second genetic disease, including hypertrophic osteoarthropathy, spinal muscular atrophy, fragile X syndrome, and cerebral cavernous malformations type 3, respectively. Cases 5-9 were clinically and genetically diagnosed as COL9A1 gene-related multiple epiphyseal dysplasia type 6 combined with NF1 gene-related neurofibromatosis type 1, COL6A3 gene-related Bethlem myopathy with WNT1 gene-related osteogenesis imperfecta type XV, Turner syndrome (45, X0/46, XX chimera) with TH gene-related Segawa syndrome, Chromosome 22q11.2 microduplication syndrome with DYNC1H1 gene-related autosomal dominant lower extremity-predominant spinal muscular atrophy-1, and ANKRD11 gene-related KBG syndrome combined with IRF2BPL gene-related neurodevelopmental disorder with regression, abnormal movement, language loss and epilepsy. DMD was the most common, and there were 6 autosomal dominant diseases caused by de novo heterozygous pathogenic variations. Conclusions: Pediatric patients with coexistence of double genetic diagnoses show complex phenotypes. When the clinical manifestations and progression are not fully consistent with the diagnosed rare genetic disease, a second rare genetic disease should be considered, and autosomal dominant diseases caused by de novo heterozygous pathogenic variation should be paid attention to. Trio-based whole-exome sequencing combining a variety of molecular genetic tests would be helpful for precise diagnosis.
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Affiliation(s)
- D D Tan
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y D Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y B Fan
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - C J Wei
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - D Y Song
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - H P Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - H Pan
- Department of Central Laboratory, Peking University First Hospital, Beijing 100034, China
| | - W L Cui
- Department of Rehabilitation, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou 450053, China
| | - S S Mao
- Department of Neurology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - X P Xu
- Department of Pediatrics, the First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - X L Yu
- Department of Neurology, Tianjin Children's Hospital, Tianjin 300134, China
| | - B Cui
- Department of Rehabilitation Medicine, Third Affiliated Hospital of Zhengzhou University, Henan Maternal and Child Health Care Hospital, Zhengzhou 450052, China
| | - H Xiong
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Cui P, Zong L, Wei W, Yan XD, Song DY, Hu WQ. [Current status and progress in the standardized surgical management of specimens after radical gastric cancer surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:179-183. [PMID: 35176831 DOI: 10.3760/cma.j.cn441530-20211215-00498] [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: 06/14/2023]
Abstract
Standardized surgical management of postoperative specimens of gastric cancer is an important part of the standardized diagnosis and treatment of gastric cancer. It can reflect the accurate number and detailed distribution of lymph nodes in the specimen and lay the foundation for accurate and standardized pathological reports after surgery. Meanwhile, it can evaluate the scope of intraoperative lymph node dissection, the safety of cutting edge, and the standardization of surgery (principle of en-bloc dissection), which is an important means of surgical quality control. It also provides accurate research samples for further research and is an important way for young surgeons to train their clinical skills. The surgical management of postoperative specimens for gastric cancer needs to be standardized, including specimen processing personnel, processing flow, resection margin examination, lymph node sorting, measurement after specimen dissection, storage of biological specimens, documentation of recorded data, etc. The promotion of standardized surgical management of specimens after radical gastrectomy can promote the homogenization of gastric cancer surgical diagnosis and treatment in medical institutions and further promote the high-quality development of gastric cancer surgery in China.
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Affiliation(s)
- P Cui
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
| | - L Zong
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
| | - W Wei
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
| | - X D Yan
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
| | - D Y Song
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
| | - W Q Hu
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Changzhi 046000, China
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Song DY, Wang M, Li GT, Yu HM, Shan YH. [Establishment of Beijing National Medical School Faculty of Dentistry]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:1115-1119. [PMID: 34763407 DOI: 10.3760/cma.j.cn112144-20210617-00293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The Beijing National Medical School Faculty of Dentistry was established in 1943. This article reviewed the files preserved in Beijing Municipal Archices and presented the early background of the establishment including the approval process, formulation of teaching plans and design of the curriculums. These historical records provide us with thought-provoking insights into the evolution of the stomatological discipline and subsequent development of various sub-disciplines, as well as the educational ideals embedded.
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Affiliation(s)
- D Y Song
- Dean's Office, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M Wang
- Dean's Office, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - G T Li
- Dean's Office, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H M Yu
- Dean's Office, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y H Shan
- Office of Research, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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7
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Zong L, Cui P, Wei W, Fan LG, Wang J, Song DY, Yang YH, Zhang MJ, Han GL, Hu WQ. [Application of modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:691-697. [PMID: 34412186 DOI: 10.3760/cma.j.issn.441530-20201015-00559] [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: Traditional Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy can greatly decrease the anastomosis-related complications and reduce the incidence of reflux esophagitis, but its complexity limits the wide application. To decrease the complexity of Kamikawa anastomosis, the surgical team of Changzhi People's Hospital of Shanxi Changzhi Medical College improved this technique by using novel notion and reduced surgical procedures. This study aims to evaluate the efficacy and safety of modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy. Methods: A descriptive cohort study was carried out. Case enrollment criteria: (1) upper gastric carcinoma or esophagogastric junction carcinoma without distant metastasis was confirmed by preoperative gastroscopic biopsy and imaging examination; (2) tumor diameter was less than 4 cm; (3) preoperative clinical staging was cT1-3N1M0. Exclusion criteria: (1) patients received preoperative neoadjuvant chemotherapy; (2) patients had severe heart or lung disease, or poor nutritional status so that they could not tolerate surgery. Clinical data of 25 patients with upper gastric carcinoma or esophagogastric junction carcinoma who underwent modified Kamikawa anastomosis in digestive tract reconstruction in Heji Hospital (8 cases) and Changzhi People's Hospital (17 cases) from April 2019 to December 2020 were retrospectively collected. Of 25 patients, 21 were male and 4 were female, with mean age of 63.0 (49 to 78) years; 3 underwent open surgery and 22 underwent laparoscopic surgery. The modified Kamikawa anastomosis was as follows: (1) the novel notion of total mesangial resection of the esophagogastric junction was applied to facilitate the thorough removal of lymph nodes and facilitate hand-sewn anastomosis and embedding; (2) the diameter of the anastomotic stoma was selected according to the diameter of the esophageal stump, between 2.5 and 3.5 cm, to reduce the occurrence of anastomotic stenosis; (3) an ultrasonic scalpel was used to incise the esophageal stump, which could not only prevent bleeding of the esophageal stump, but also closely seal the esophageal mucosa, muscle layer and serosa to prevent esophageal mucosa retraction; (4) barbed suture was used to suture the remnant stomach fundus and esophagus to fix the stomach fundus in order to reduce the cumbersome and difficult intermittent sutures in a small space; (5) two barbed sutures were used to continuously suture the front and back walls of the anastomosis and complete the suture and fixation of the muscle flap. Relevant indicators of surgical safety, postoperative complications (using the Clavien-Dindo classification), esophageal reflux symptoms and the occurrence of esophagitis (using Los Angeles classification) were analyzed. The gastroesophageal reflux disease (GERD) score, gastroscopy, multi-position digestive tract radiography during postoperative follow-up were used to evaluate the residual gastric motility and anti-reflux efficacy. Results: Modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy was successfully performed in 25 patients. The surgical time was (5.8±1.8) hours, the intraoperative blood loss was (89.2±11.8) ml, and the average hospital stay was (13.8±2.9) days. Three cases (12.0%) developed postoperative anastomotic stenosis as Clavien-Dindo grade III and were healed after endoscopic dilation treatment. Postoperative upper gastrointestinal radiography showed 1 case (4.0%) with reflux symptoms as Clavien-Dindo grade I. Gastroscopy showed no signs of reflux esophagitis, and its Los Angeles classification was A grade. No anastomotic bleeding, local infection and death were found in all the patients. At postoperative 6-month of follow-up, GERD score showed no significant difference compared to pre-operation (2.7±0.6 vs. 2.4±1.0, t=-1.495, P=0.148). Conclusion: Modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy is safe and feasible with good anti-reflux efficacy.
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Affiliation(s)
- L Zong
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - P Cui
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - W Wei
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - L G Fan
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - J Wang
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - D Y Song
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - Y H Yang
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - M J Zhang
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - G L Han
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - W Q Hu
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
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Liu Y, Zhang KC, Fan LG, Wang J, Cheng QS, Song DY, Cui P, Zong L, Hu WQ. [Current status of research on standardized management of specimens after radical gastrectomy for gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:463-466. [PMID: 34000779 DOI: 10.3760/cma.j.issn.441530-20200928-00542] [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
The quality control and standardization of procedures in radical gastrectomy for gastric cancer, especially the standardized processing of specimens after radical gastrectomy for gastric cancer, is very important. It is not only the basis of accurate pathological staging, but also the evidence of surgical quality and the original data of clinical research, which plays a pivotal role. The examination and classification of lymph nodes, specimens processing records, and data uploading and archiving after radical gastrectomy for gastric cancer are indispensable. It is necessary for surgeons to participate in the processing of surgical specimens. This article will combine the current research status and progress at home and abroad to review the standardized processing of specimens after radical gastrectomy for gastric cancer.
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Affiliation(s)
- Y Liu
- Graduate Department of Changzhi Medical College, Shanxi Changzhi 046000, China
| | - K C Zhang
- Graduate Department of Changzhi Medical College, Shanxi Changzhi 046000, China
| | - L G Fan
- Graduate Department of Changzhi Medical College, Shanxi Changzhi 046000, China
| | - J Wang
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - Q S Cheng
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - D Y Song
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - P Cui
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - L Zong
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
| | - W Q Hu
- Department of Gastrointestinal Surgery, Changzhi People's Hospital, Changzhi Medical College, Shanxi Changzhi 046000, China
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Chen R, Zhang Y, Xu CH, Cheng XY, Wu Y, Song DY, Xu HC, Liu XY. [A preliminary study on molecular target identification of drugs in individualized treatment of malignant solid tumors in children]. Zhonghua Yi Xue Za Zhi 2020; 100:2283-2287. [PMID: 32746599 DOI: 10.3760/cma.j.cn112137-20200304-00599] [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: 06/11/2023]
Abstract
Objective: To explore the role of drug-related molecular target identification in the individualized treatment of malignant solid tumors in children. Methods: The clinical data of 40 patients diagnosed with malignant solid tumors from Beijing Tongren Hospital, Capital Medical University, between June 2017 and March 2019 were retrospectively analyzed. Immunohistochemistry, polymerase chain reaction and sequencing methods were used to determine the expression levels and mutations of tumor drug molecular targets, and to compare the efficiency as well as the incidence of toxic side effects of chemotherapy using anti-tumor drugs with various molecular targets. Results: A total of 4 tumor drug-related targets were identified in 40 tumor tissue samples, namely DNA topoisomerase-ⅡA (TOPOⅡA), β(3)-tubulin (Tubulinβ(3)), DNA topoisomerase-Ⅰ(TOPOⅠ) and dihydrofolate reductase gene polymorphisms [DHFR (C829T)]. The effective rates of platinum-based agents, methotrexate, irinotecan, vinblastine and anthracycline for malignant solid tumors in children were 90.0% (36/40), 85.0% (34/40), 70.0% (28/40), 67.5% (27/40), 62.5% (25/40), respectively. The effective rates of chemotherapy with irinotecan, methotrexate, and vinblastine in mesenchymal tumors were 68.9% (20/29), 62.1% (18/29), 68.9% (20/29), respectively, which were considerably higher than 18.2% (2/11), 36.4% (4/11) and 36.4% (4/11) in non-mesenchymal tumors, with significant differences (χ(2)=5.487, 15.345, 17.278, all P<0.05). The effective rate of chemotherapy of platinum-based drugs for non-mesenchymal tumors was 72.3% (8/11), which was significantly higher than 58.6% (17/29) in mesenchymal tumors, and the difference was statistically significant (χ(2)=11.231, P<0.05). The intensity of toxic side effects in order from high to low was anthracycline > platinum > methotrexate > vinblastine > irinotecan. Conclusion: Tumor drug-related molecular targets and the sensitivity of tumors of different origins to the same anti-tumor drug as well as side effects are predicted, which provides a theoretical and clinical basis for individualized treatment of malignant tumors in children.
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Affiliation(s)
- R Chen
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y Zhang
- Department of Pediatrics, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - C H Xu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - X Y Cheng
- the Fourth Medical College of Capital Medical University, Beijing 100069, China
| | - Y Wu
- the Fourth Medical College of Capital Medical University, Beijing 100069, China
| | - D Y Song
- the Fourth Medical College of Capital Medical University, Beijing 100069, China
| | - H C Xu
- the Fourth Medical College of Capital Medical University, Beijing 100069, China
| | - X Y Liu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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10
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Song DY, Zhang S, Zhang LP, Jin ML, Li X, Bao N, Ren YH, Liu M, Dai HP. [Differences in small airway lesions in patients with different types of idiopathic interstitial pneumonia]. Zhonghua Yi Xue Za Zhi 2019; 99:2325-2331. [PMID: 31434411 DOI: 10.3760/cma.j.issn.0376-2491.2019.30.002] [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 investigate the differences in small airway lesions in patients with different types of idiopathic interstitial pneumonia (IIPs). Methods: A total of 46 patients with IIPs confirmed by video assisted thoracoscopic or open lung biopsy, hospitalized in the Respiratory and Critical Care Medicine of Beijing Chao-Yang Hospital, from Dec. 1998 through Nov. 2007 were studied, including 19 patients with idiopathic pulmonary fibrosis (IPF group), 14 with nonspecific interstitial pneumonia (NSIP group), and 13 cryptogenic organizing pneumonia (COP group). Pulmonary function and high resolution CT (HRCT) of the patients were examined before lung biopsy, and lung biopsy tissue were stained with hematoxylin-eosin. The abnormality of small airways in pathology, pulmonary function and HRCT were compared among these patients with IIPs. Results: Small airway inflammatory cell infiltration score (53.8±17.7) was significantly higher in the COP group than in the IPF group (38.8±9.7) (P<0.01). The fibrous tissue proliferation score in small airways (42.9±12.1) in the IPF group was significantly higher than that in the NSIP group (31.4±10.5) and the COP group (26.7±16.3) (both P<0.05). In the IPF group, NSIP group and COP group, the small airway function index was significantly reduced, and the maximum expiratory flow rate (V(25%), V(50%)) at 25% and 50% of the lung capacity was<80% predicted, the incidences of small airway dysfunction in the three groups were 63.2%, 69.2%, and 63.6%, respectively. There was no significant difference among the groups (P>0.05). Small airway inflammatory cell infiltration was negatively correlated with V(50%) of small airway function (r=-0.305, P=0.049). The bronchodilation rate in the HRCT of the IPF group (100%) was significantly higher than that of the NSIP group (50.0%) and the COP group (53.8%) (both P<0.01). Conclusion: The patients with IPF, NSIP and COP have abnormal pathologic, physiological and imaging changes of small airways, moreover have different characteristics.
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Affiliation(s)
- D Y Song
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - S Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - L P Zhang
- Department of Respiratory Medicine, Beijing Haidian Hospital, Beijing 100194, China
| | - M L Jin
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - X Li
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - N Bao
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Y H Ren
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - M Liu
- Department of Radiology in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - H P Dai
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
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11
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Wang RJ, Liu M, Song DY, Yang S, Wang Q, Wang L, Feng HL. [Analysis of edge morphology of partial veneers made by different processing techniques and materials]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:93-99. [PMID: 30773551 DOI: 10.19723/j.issn.1671-167x.2019.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the edge morphology of partial veneers made of different materials by slurry molding, heat-pressed and computer aided design/computer aided manufacturing (CAD/CAM) techniques. METHODS Thirty premolars with smooth surface and intact enamel were selected and randomly divided into five groups, 6 specimens for each group. Group A were made from feldspathic porcelain (Noritake®) by slurry molding, while Group B were made from lithium disilicate glass ceramic (IPS E.max® Press) by heat-pressed. Group C/D/E were respectively made from feldspar porcelain block (VITA Mark II®), zirconia-reinforced glass ceramic (VITA Suprinity®) and hybrid ceramic with a ceramic-polymer network (VITA Enamic®) by CAD/CAM techniques. All the partial veneers luted with light-cured composite resin. Then the partial veneers were trimmed and polished to achieve the smooth finishing margin, clinical polishing sets were used according to the product descriptions. Scanning electron microscope (SEM) was used to observe the edge morphology of prostheses and the exposure of resin cements. RESULTS The smooth surface and knife-like edge of the partial veneers could be obtained after bonding, trimming and polishing. The edges of Group A were slightly rough and the width of the exposed adhesive was (106.00±9.17) μm. In Group B, the edges were smoother than Group A, and the exposed wide adhesive strip was visible, which was (138.33±20.59) μm. In Group E, the edges were smooth too, and the width of exposed adhesive strip was (186.00±5.66) μm. The edges of Group C and Group D were rough and uneven, and the adhesive was rarely exposed, they were (50.67±7.51) μm and (65.67±17.90) μm. There were all significant differences between two groups, except Group C and Group D. CONCLUSION After trimming and polishing in accordance with clinical procedures, the expected knife-like edge can be obtained in all groups. The width of the exposed resin adhesive of each group is different, the order: Mark II/Suprinity < Noritake < E.max Press < Enamic. The edge morphology of partial veneers in different processing technic and materials are different.
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Affiliation(s)
- R J Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Y Song
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S Yang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q Wang
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - L Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Yoo J, Lee JS, Kim S, Kim BS, Choi H, Song DY, Kim WB, Won CW. Length of hospital stay after hip fracture surgery and 1-year mortality. Osteoporos Int 2019; 30:145-153. [PMID: 30361752 DOI: 10.1007/s00198-018-4747-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [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: 03/14/2018] [Accepted: 10/18/2018] [Indexed: 11/30/2022]
Abstract
UNLABELLED There is ongoing effort to discharge patients early after hip fracture surgery to reduce the medical and economic burden. We tried to find whether there is any related side effect, and discovered that early discharge, especially before 10 days after surgery, is associated with higher mortality. INTRODUCTION The aim of this study was to analyze the association between the length of hospital stay after hip fracture and 1-year mortality in older adults aged ≥ 65 years old. METHODS We conducted a retrospective cohort study using the Korean National Health Insurance Service data to identify patients who were discharged after hip fracture surgery from 2007 to 2009 among 487,460 older adults of age ≥ 65 years. The lengths of stay involving hip fracture surgery were categorized at 10-day interval, and analyzed in relation to 1-year mortality from the date of hospital discharge. RESULTS A total of 4213 patients were discharged after hip fracture surgery, of whom 604 (14.3%) died within 1 year of discharge. The average length of stay was 30.7 days (standard deviation 24.5 days). The 1-year mortality was the highest for the length of stay ≤ 10 days group at 21.7%, followed by 15.2%, 14.3%, 13.3%, and 12.4% for > 40, 21-30, 31-40, and 11-20 days groups, respectively (p value 0.05). On Cox proportional hazard regression, the adjusted hazard ratio for length of stay ≤ 10 days group was 1.56 (95% confidence interval 1.14-2.12) against the reference group (11-20 days), while other groups did not show statistical significance. Higher risk of death was associated with increasing age, male gender, Charlson comorbidity index ≥3, subtrochanteric fracture, and discharge to tertiary care hospitals and long-term care hospitals. CONCLUSION Older adults discharged within 10 days of hospital admission for hip fracture surgery have higher 1-year mortality after discharge.
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Affiliation(s)
- J Yoo
- Department of Family Medicine, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - J S Lee
- Clinical Research Center, Asan Medical Center, 88, 43-gil Olympic-ro, Songpa-gu, Seoul, South Korea
| | - S Kim
- Department of Family Medicine, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - B S Kim
- Department of Family Medicine, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - H Choi
- Department of Family Medicine, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - D Y Song
- Elderly Frailty Research Center, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - W B Kim
- Department of Medicine, Graduate School, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea
| | - C W Won
- Department of Family Medicine, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, South Korea.
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13
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Xiao HJ, Huang XX, Liu Z, Dong R, Song DY, Zhang X, Wang SY, Dai HP. [Metformin protects against bleomycin-induced pulmonary fibrosis in mice]. Zhonghua Yi Xue Za Zhi 2018; 98:1951-1955. [PMID: 29996289 DOI: 10.3760/cma.j.issn.0376-2491.2018.24.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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 effect of metformin on murine model of bleomycin (BLM)-induced lung injury and fibrosis. Methods: A total of 30 mice were divided into 3 groups: control, BLM, and BLM with metformin, in accordance with the random number table and each group had 10 mice. To induce the pulmonary fibrosis model, a concentration of 2 mg/ml bleomycin was intratracheally administered in the BLM group and BLM with metformin group with a volume of 1.75 μl/g, while the control group accepted saline with the same volume. Metformin (200 mg/kg) was given to the mice orally once a day from the day before intratracheal instillation of bleomycin to day 14. The daily survival condition of mice was recorded during 14 days. At day 14, HE-staining was used to assess the severity of fibrosis according to the method proposed by Ashcroft. Total lung collagen content was determined by hydroxyproline assay and Masson's trichrome staining. To examine the expression of fibronectin we used the method of immunohistochemistry staining. The changes of Transforming Growth Factor beta 1 (TGF-β(1)) in plasm, bronchoalveolar lavage fluid (BALF) and lung were measured by ELISA. Results: The survival rates of control group, BLM group and BLM with metformin group at day 14 were 10/10, 4/10 and 7/10 respectively. According to the method proposed by Ashcroft the score of metformin treated mice was significantly lower than that of the bleomycin model mice[(3.82±0.58) vs (7.79±0.06), (P<0.05)]. The hydroxyproline level in lung tissue were markedly attenuated in metformin treated mice compared with bleomycin model mice [(0.40±0.05) vs (0.73±0.10) μg/mg, (P<0.05)]. The level of TGF-β(1) in plasma, BALF and lung tissue were also decreased in mice treated with metformin compared with bleomycin model mice [(2.32±0.68) vs (4.59±0.45) ng/ml, (0.81±0.09) vs (1.40±0.06) ng/ml, (17.12±0.83) vs (21.25±0.69) ng/mg, all P<0.05]. Conclusion: Metformin can reduce the severity of pulmonary fibrosis in mice induced by bleomycin.
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Affiliation(s)
- H J Xiao
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Institute of Respiratory Medicine, Beijing 100020, China
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Narang AK, Trieu J, Radwan N, Ram A, Robertson SP, He P, Gergis C, Griffith E, Singh H, DeWeese TA, Honig S, Annadanam A, Greco S, DeVille C, McNutt T, DeWeese TL, Song DY, Tran PT. End-of-radiation PSA as a novel prognostic factor in patients undergoing definitive radiation and androgen deprivation therapy for prostate cancer. Prostate Cancer Prostatic Dis 2017; 20:203-209. [PMID: 28094250 PMCID: PMC5429233 DOI: 10.1038/pcan.2016.67] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/09/2016] [Accepted: 10/07/2016] [Indexed: 12/19/2022]
Abstract
Background In men undergoing definitive radiation for prostate cancer, it is unclear whether early biochemical response can provide additional prognostic value beyond pre-treatment risk stratification. Methods Prostate cancer patients consecutively treated with definitive radiation at our institution by a single provider from 1993–2006 and who had an EOR PSA (n=688, median follow-up 11.2 years). We analyzed the association of an end-of-radiation (EOR) prostate-specific antigen (PSA) level, obtained during the last week of radiation, with survival outcomes. Multivariable-adjusted cox proportional hazards models were constructed to assess associations between a detectable EOR PSA (defined as ≥0.1 ng ml−1) and biochemical failure-free survival (BFFS), metastasis-free survival (MFS), prostate cancer-specific survival (PCSS), and overall survival (OS). Kaplan-Meier survival curves were constructed, with stratification by EOR PSA. Results At the end of radiation, the PSA level was undetectable in 30% of patients. Men with a detectable EOR PSA experienced inferior 10-year BFFS (49.7% vs. 64.4%, p<0.001), 10-year MFS (84.8% vs. 92.0%, p=0.003), 10-year PCSS (94.3% vs. 98.2%, p=0.007), and 10-year OS (75.8% vs. 82.5%, p=0.01), as compared to men with an undetectable EOR PSA. Among NCCN intermediate- and high-risk men who were treated with definitive radiation and androgen deprivation therapy (ADT), a detectable EOR PSA was more strongly associated with PCSS than initial NCCN risk level (EOR PSA: HR 5.89, 95% CI 2.37–14.65, p<0.001; NCCN risk level: HR 2.01, 95% CI 0.74–5.42, p=0.168). Main study limitations are retrospective study design and associated biases. Conclusions EOR PSA was significantly associated with survival endpoints in men who received treated with definitive radiation and ADT. Whether the EOR PSA can be used to modulate treatment intensity merits further investigation.
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Affiliation(s)
- A K Narang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J Trieu
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - N Radwan
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A Ram
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S P Robertson
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P He
- Department of Biostatistics, Stanford University School of Medicine, Stanford, CA, USA
| | - C Gergis
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - E Griffith
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - H Singh
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T A DeWeese
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Honig
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A Annadanam
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Greco
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - C DeVille
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T McNutt
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T L DeWeese
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Departments of Oncology and Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D Y Song
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Departments of Oncology and Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P T Tran
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Departments of Oncology and Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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15
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Tosoian JJ, Alam R, Gergis C, Narang A, Radwan N, Robertson S, McNutt T, Ross AE, Song DY, DeWeese TL, Tran PT, Walsh PC. Unscreened older men diagnosed with prostate cancer are at increased risk of aggressive disease. Prostate Cancer Prostatic Dis 2017; 20:193-196. [PMID: 28045113 DOI: 10.1038/pcan.2016.64] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/17/2016] [Accepted: 11/10/2016] [Indexed: 01/15/2023]
Abstract
BACKGROUND To evaluate the relationship between PSA testing history and high-risk disease among older men diagnosed with prostate cancer. METHODS Records from 1993 to 2014 were reviewed for men who underwent radiotherapy for prostate cancer at age 75 years or older. Patients were classified into one of four groups based on PSA-testing history: (1) no PSA testing; (2) incomplete/ineffective PSA testing; (3) PSA testing; or (4) cannot be determined. Outcomes of interest were National Comprehensive Cancer Network (NCCN) risk group (that is, low, intermediate or high risk) and biopsy grade at diagnosis. Multivariable logistic regression was used to determine the association between PSA testing history and high-risk cancer. RESULTS PSA-testing history was available in 274 (94.5%) of 290 subjects meeting study criteria. In total, 148 men (54.0%) underwent PSA testing with follow-up biopsy, 72 (26.3%) underwent PSA testing without appropriate follow-up, and 54 men (19.7%) did not undergo PSA testing. Patients who underwent PSA testing were significantly less likely to be diagnosed with NCCN high-risk cancer (23.0% vs 51.6%, P<0.001). On multivariable analysis, men with no/incomplete PSA testing had more than three-fold increased odds of high-risk disease at diagnosis (odds ratio 3.39, 95% confidence interval 1.96-5.87, P<0.001) as compared to the tested population. CONCLUSIONS Older men who underwent no PSA testing or incomplete testing were significantly more likely to be diagnosed with high-risk prostate cancer than those who were previously screened. It is reasonable to consider screening in healthy older men likely to benefit from early detection and treatment.
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Affiliation(s)
- J J Tosoian
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - R Alam
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - C Gergis
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A Narang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - N Radwan
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Robertson
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T McNutt
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A E Ross
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D Y Song
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - T L DeWeese
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P T Tran
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P C Walsh
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Tran PT, Hales RK, Zeng J, Aziz K, Salih T, Gajula RP, Chettiar S, Gandhi N, Wild AT, Kumar R, Herman JM, Song DY, DeWeese TL. Tissue biomarkers for prostate cancer radiation therapy. Curr Mol Med 2012; 12:772-87. [PMID: 22292443 PMCID: PMC3412203 DOI: 10.2174/156652412800792589] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 11/10/2011] [Accepted: 12/20/2011] [Indexed: 12/12/2022]
Abstract
Prostate cancer is the most common cancer and second leading cause of cancer deaths among men in the United States. Most men have localized disease diagnosed following an elevated serum prostate specific antigen test for cancer screening purposes. Standard treatment options consist of surgery or definitive radiation therapy directed by clinical factors that are organized into risk stratification groups. Current clinical risk stratification systems are still insufficient to differentiate lethal from indolent disease. Similarly, a subset of men in poor risk groups need to be identified for more aggressive treatment and enrollment into clinical trials. Furthermore, these clinical tools are very limited in revealing information about the biologic pathways driving these different disease phenotypes and do not offer insights for novel treatments which are needed in men with poor-risk disease. We believe molecular biomarkers may serve to bridge these inadequacies of traditional clinical factors opening the door for personalized treatment approaches that would allow tailoring of treatment options to maximize therapeutic outcome. We review the current state of prognostic and predictive tissue-based molecular biomarkers which can be used to direct localized prostate cancer treatment decisions, specifically those implicated with definitive and salvage radiation therapy.
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Affiliation(s)
- P T Tran
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medicine, 1550 Orleans Street, CRB2, RM 406, Baltimore, MD 21231, USA.
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Song DY, Song S, Song Y, Lee JE. Alcohol intake and renal cell cancer risk: a meta-analysis. Br J Cancer 2012; 106:1881-90. [PMID: 22516951 PMCID: PMC3364130 DOI: 10.1038/bjc.2012.136] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/13/2012] [Accepted: 03/18/2012] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND An inverse association between alcoholic beverage intake and risk of renal cell cancer has been suggested in recent studies. METHODS We examined the association between alcoholic beverages and renal cell cancer risk in a meta-analysis. We identified relevant studies by searching the database of PubMed, EMBASE, and MEDLINE published through August 2011. We combined the study-specific relative risks (RRs) using a random-effects model. RESULTS A total of 20 case-control studies, 3 cohort studies, and 1 pooled analysis of cohort studies were included in the meta-analysis. We observed that alcoholic beverage intake was associated with a lower risk of renal cell cancer in combined analysis of case-control and cohort studies; for total alcoholic beverage intake, combined RRs (95% confidence intervals) comparing top with bottom categories were 0.76 (0.68-0.85) in case-control studies, and 0.71 (0.63-0.78) in cohort studies (P for difference by study design=0.02). The inverse associations were observed for both men and women and for each specific type alcoholic beverage (beer, wine, and liquor). Also, we found that one drink per day of alcoholic beverage conferred the reduction in renal cell cancer risk, but further drinking above that level did not add benefit. CONCLUSION The findings from our meta-analysis support the hypothesis that alcoholic beverage intake is inversely associated with a lower risk of renal cell cancer, with moderate consumption conferring the protection and higher consumption conferring no additional benefits.
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Affiliation(s)
- D Y Song
- Department of Food and Nutrition, Sookmyung Women’s University, 52 Hyochangwon-gil, Yongsan-gu, Seoul 140-742, Republic of Korea
| | - S Song
- Department of Food and Nutrition, Seoul National University, Seoul 151-742, Republic of Korea
| | - Y Song
- School of Human Ecology, Catholic University, Gyeongi-do 420-743, Republic of Korea
| | - J E Lee
- Department of Food and Nutrition, Sookmyung Women’s University, 52 Hyochangwon-gil, Yongsan-gu, Seoul 140-742, Republic of Korea
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Fallavollita P, Burdette EC, Song DY, Abolmaesumi P, Fichtinger G. Technical note: unsupervised C-arm pose tracking with radiographic fiducial. Med Phys 2011; 38:2241-5. [PMID: 21626958 DOI: 10.1118/1.3566015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE C-arm fluoroscopy reconstruction, such as that used in prostate brachytherapy, requires that the relative poses of the individual C-arm fluoroscopy images must be known prior to reconstruction. Radiographic fiducials can provide excellent C-arm pose tracking, but they need to be segmented in the image. The authors report an automated and unsupervised method that does not require prior segmentation of the fiducial. METHODS The authors compute the individual C-arm poses relative to a stationary radiographic fiducial of known geometry. The authors register a filtered 2D fluoroscopy image of the fiducial to its 3D model by using image intensity alone without prior segmentation. To enhance the C-arm images, the authors investigated a three-step cascade filter and a line enhancement filter. The authors tested the method on a composite fiducial containing beads, straight lines, and ellipses. Ground-truth C-arm pose was provided by a clinically proven method. RESULTS Using 111 clinical C-arm images and +/- 10 degrees and +/- 10 mm random perturbation around the ground-truth pose, a total of 2775 cases were evaluated. The average rotation and translation errors were 0.62 degrees (STD = 0.31 degrees) and 0.72 mm (STD = 0.55 mm) for the three-step filter and 0.67 degrees (STD = 0.40 degrees) and 0.87 mm (STD = 0.27 mm) using the line enhancement filter. CONCLUSIONS The C-arm pose tracking method was sufficiently accurate and robust on human patient data for subsequent 3D implant reconstruction.
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Fallavollita P, Aghaloo ZK, Burdette EC, Song DY, Abolmaesumi P, Fichtinger G. Registration between ultrasound and fluoroscopy or CT in prostate brachytherapy. Med Phys 2010; 37:2749-60. [PMID: 20632585 DOI: 10.1118/1.3416937] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE In prostate brachytherapy, transrectal ultrasound (TRUS) is used to visualize the anatomy, while implanted seeds can be visualized by fluoroscopy. Intraoperative dosimetry optimization is possible using a combination of TRUS and fluoroscopy, but requires localization of the fluoroscopy-derived seed cloud, relative to the anatomy as seen on TRUS. The authors propose to develop a method of registration of TRUS images and the implants reconstructed from fluoroscopy. METHODS A phantom was implanted with 48 seeds then imaged with TRUS and CT. Seeds were reconstructed from CT yielding a cloud of seeds. Fiducial-based ground-truth registration was established between the TRUS and CT. TRUS images are filtered, compounded, and registered to the reconstructed implants by using an intensity-based metric. The authors evaluated a volume-to-volume and point-to-volume registration scheme. In total, seven TRUS filtering techniques and three image similarity metrics were analyzed. The method was also tested on human subject data captured from a brachytherapy procedure. RESULTS For volume-to-volume registration, noise reduction filter and normalized correlation metrics yielded the best result: An average of 0.54 +/- 0.11 mm seed localization error relative to ground truth. For point-to-volume registration, noise reduction combined with beam profile filter and mean squares metrics yielded the best result: An average of 0.38 +/- 0.19 mm seed localization error relative to the ground truth. In human patient data, C-arm fluoroscopy images showed 81 radioactive seeds implanted inside the prostate. A qualitative analysis showed clinically correct agreement between the seeds visible in TRUS and reconstructed from intraoperative fluoroscopy imaging. The measured registration error compared to the manually selected seed locations by the clinician was 2.86 +/- 1.26 mm. CONCLUSIONS Fully automated registration between TRUS and the reconstructed seeds performed well in ground-truth phantom experiments and qualitative observation showed adequate performance on early clinical patient data.
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Affiliation(s)
- P Fallavollita
- School of Computing, Queen's University, Ontario K7L 3N6, Canada.
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Terezakis SA, Myers L, Bell R, Souranis A, Song DY, Zellars RC, DeWeese TL, Ford EC. Quantitative aspects of failure mode and effects analysis (FMEA) scoring in a prospective safety study of a large academic radiation oncology department. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.6153] [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: 11/20/2022] Open
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Abstract
Spinel Zn2SnO4 particles with the cubic shape are prepared via a hydrothermal reaction under mild conditions. The hydrothermal conditions, such as alkaline concentration, reaction temperature, and duration time, have an important influence on the product structure and the performance of the electrode prepared with the product. The optimized product is cube-shaped Zn2SnO4 crystalline, which is prepared with 0.4 M of NaOH solution at 200 degrees C for 24 h. These cube-shaped Zn2SnO4 particles with the spinel structure exhibit a large electrochemical capacity of 988 mA h/g and a relatively good capacity retention as anode materials for Li-ion battery. The structures of the as-prepared product and specimens taken from the electrodes after charging-discharging cycles are analyzed by X-ray diffraction, scanning electron microscopy, and transition electron microscopy techniques. In particular, it is found for the first time that the spinel Zn2SnO4 structure exists to a great extent after the first cycle and contributes to the extremely high reversible capacity during the following cycles.
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Affiliation(s)
- A Rong
- Institute of New Energy Material Chemistry, Department of Materials Chemistry, Nankai University, Tianjin 300071, China
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22
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Huang PX, Wu F, Zhu BL, Li GR, Wang YL, Gao XP, Zhu HY, Yan TY, Huang WP, Zhang SM, Song DY. Praseodymium Hydroxide and Oxide Nanorods and Au/Pr6O11 Nanorod Catalysts for CO Oxidation. J Phys Chem B 2006; 110:1614-20. [PMID: 16471724 DOI: 10.1021/jp055622r] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Praseodymium hydroxide nanorods were synthesized by a two-step approach: First, metallic praseodymium was used to form praseodymium chloride, which reacted subsequently with KOH solution to produce praseodymium hydroxide. In the second step the hydroxide was treated with a concentrated alkaline solution at 180 degrees C for 45 h, yielding nanorods as shown by the scanning and transmission electron microscopy images. The results of X-ray diffraction and energy-dispersive X-ray spectroscopy experiments indicate that these nanorods are pure praseodymium hydroxide with a hexagonal structure, which can be converted into praseodymium oxide (Pr6O11) nanorods of a face-centered cubic structure after calcination at 600 degrees C for 2 h in air. Gold was loaded on the praseodymium oxide nanorods using HAuCl4 as the gold source, and NaBH4 was used to reduce the gold species to metallic nanoparticles with sizes of 8-12 nm on the nanorod surface. These Au/Pr6O11 nanorods exhibit superior catalytic activity for CO oxidation.
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Affiliation(s)
- P X Huang
- Institute of New Energy Material Chemistry, Department of Materials Chemistry, Nankai University, Tianjin 300071, China
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Huang PX, Wu F, Zhu BL, Gao XP, Zhu HY, Yan TY, Huang WP, Wu SH, Song DY. CeO2 Nanorods and Gold Nanocrystals Supported on CeO2 Nanorods as Catalyst. J Phys Chem B 2005; 109:19169-74. [PMID: 16853472 DOI: 10.1021/jp052978u] [Citation(s) in RCA: 196] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The formation mechanism of uniform CeO2 structure at the nanometer scale via a wet-chemical reaction is of great interest in fundamental study as well as a variety of applications. In this work, large-scale well-crystallized CeO2 nanorods with uniform diameters in the range of 20-30 nm and lengths up to tens of micrometers are first synthesized through a hydrothermal synthetic route in 5 M KOH solution at 180 degrees C for 45 h without any templates and surfactants. The nanorod formation involves dehydration of CeO2 nanoparticles and orientation growth along the 110 direction in KOH solution. Subsequently, gold nanoparticles with crystallite sizes between 10 and 20 nm are loaded on the surface of CeO2 nanorods using HAuCl4 solution as the gold source and NaBH4 solution as a reducing agent. The synthesized Au/CeO2 nanorods demonstrate a higher catalytic activity in CO oxidation than the pure CeO2 nanorods.
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Affiliation(s)
- P X Huang
- Institute of New Energy Material Chemistry, Department of Materials Chemistry, Nankai University, Tianjin 300071, China
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24
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Zhu HY, Lan Y, Gao XP, Ringer SP, Zheng ZF, Song DY, Zhao JC. Phase transition between nanostructures of titanate and titanium dioxides via simple wet-chemical reactions. J Am Chem Soc 2005; 127:6730-6. [PMID: 15869295 DOI: 10.1021/ja044689+] [Citation(s) in RCA: 383] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Titanate nanofibers of various sizes and layered structure were prepared from inorganic titanium compounds by hydrothermal reactions. These fibers are different from "refractory" mineral substances because of their dimension, morphology, and significant large ratio of surface to volume, and, surprisingly, they are highly reactive. We found, for the first time, that phase transitions from the titanate nanostructures to TiO(2) polymorphs take place readily in simple wet-chemical processes at temperatures close to ambient temperature. In acidic aqueous dispersions, the fibers transform to anatase and rutile nanoparticles, respectively, but via different mechanisms. The titanate fibers prepared at lower hydrothermal temperatures transform to TiO(2) polymorphs at correspondingly lower temperatures because they are thinner, possess a larger surface area and more defects, and possess a less rigid crystal structure, resulting in lower stability. The transformations are reversible: in this case, the obtained TiO(2) nanocrystals reacted with concentrate NaOH solution, yielding hollow titanate nanotubes. Consequently, there are reversible transformation pathways for transitions between the titanates and the titanium dioxide polymorphs, via wet-chemical reactions at moderate temperatures. The significance of these findings arises because such transitions can be engineered to produce numerous delicate nanostructures under moderate conditions. To demonstrate the commercial application potential of these processes, we also report titanate and TiO(2) nanostructures synthesized directly from rutile minerals and industrial-grade rutiles by a new scheme of hydrometallurgical reactions.
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Affiliation(s)
- H Y Zhu
- Australian Key Centre of Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia.
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25
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Chen X, Gao XP, Zhang H, Zhou Z, Hu WK, Pan GL, Zhu HY, Yan TY, Song DY. Preparation and Electrochemical Hydrogen Storage of Boron Nitride Nanotubes. J Phys Chem B 2005; 109:11525-9. [PMID: 16852412 DOI: 10.1021/jp050105u] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boron nitride (BN) nanotubes were synthesized through chemical vapor deposition over a wafer made by a LaNi5/B mixture and nickel powder at 1473 K. Scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were performed to characterize the microstructure and composition of BN nanotubes. It was found that the obtained BN nanotubes were straight with a diameter of 30-50 nm and a length of up to several microns. We first verify that the BN nanotubes can storage hydrogen by means of an electrochemical method, though its capacity is low at present. The hydrogen desorption of nonelectrochemical recombination in cyclic voltammograms, which is considered as the slow reaction at BN nanotubes, suggests the possible existence of strong chemisorption of hydrogen, and it may lead to the lower discharge capacity of BN nanotubes. It is tentatively concluded that the improvement of the electrocatalytic activity by surface modification with metal or alloy would enhance the electrochemical hydrogen storage capacity of BN nanotubes.
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Affiliation(s)
- X Chen
- Institute of New Energy Material Chemistry, Department of Materials Chemistry, N & T Joint Academy, Nankai University, Tianjin 300071, China
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26
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Zhu HY, Lan Y, Gao XP, Ringer SP, Zheng ZF, Song DY, Zhao JC. Phase transition between nanostructures of titanate and titanium dioxides via simple wet-chemical reactions. J Am Chem Soc 2005. [PMID: 15869295 DOI: 10.1021/ja044689] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Titanate nanofibers of various sizes and layered structure were prepared from inorganic titanium compounds by hydrothermal reactions. These fibers are different from "refractory" mineral substances because of their dimension, morphology, and significant large ratio of surface to volume, and, surprisingly, they are highly reactive. We found, for the first time, that phase transitions from the titanate nanostructures to TiO(2) polymorphs take place readily in simple wet-chemical processes at temperatures close to ambient temperature. In acidic aqueous dispersions, the fibers transform to anatase and rutile nanoparticles, respectively, but via different mechanisms. The titanate fibers prepared at lower hydrothermal temperatures transform to TiO(2) polymorphs at correspondingly lower temperatures because they are thinner, possess a larger surface area and more defects, and possess a less rigid crystal structure, resulting in lower stability. The transformations are reversible: in this case, the obtained TiO(2) nanocrystals reacted with concentrate NaOH solution, yielding hollow titanate nanotubes. Consequently, there are reversible transformation pathways for transitions between the titanates and the titanium dioxide polymorphs, via wet-chemical reactions at moderate temperatures. The significance of these findings arises because such transitions can be engineered to produce numerous delicate nanostructures under moderate conditions. To demonstrate the commercial application potential of these processes, we also report titanate and TiO(2) nanostructures synthesized directly from rutile minerals and industrial-grade rutiles by a new scheme of hydrometallurgical reactions.
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Affiliation(s)
- H Y Zhu
- Australian Key Centre of Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia.
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27
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Gao XP, Bao JL, Pan GL, Zhu HY, Huang PX, Wu F, Song DY. Preparation and Electrochemical Performance of Polycrystalline and Single Crystalline CuO Nanorods as Anode Materials for Li Ion Battery. J Phys Chem B 2004. [DOI: 10.1021/jp037075k] [Citation(s) in RCA: 517] [Impact Index Per Article: 25.9] [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)
- X. P. Gao
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - J. L. Bao
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - G. L. Pan
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - H. Y. Zhu
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - P. X. Huang
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - F. Wu
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
| | - D. Y. Song
- Institute of New Energy Chemistry Material, Nankai University, Tianjin 300071, China, State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071, China, Electron Microscope Unit and School of Chemistry, The University of Sydney, NSW 2006, Australia, and School of Chemical Engineering and Environmental, Beijing Institute of Technology, Beijing 100081, China
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Zhu HY, Gao XP, Song DY, Bai YQ, Ringer SP, Gao Z, Xi YX, Martens W, Riches JD, Frost RL. Growth of Boehmite Nanofibers by Assembling Nanoparticles with Surfactant Micelles. J Phys Chem B 2004. [DOI: 10.1021/jp049485u] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. Y. Zhu
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - X. P. Gao
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - D. Y. Song
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Y. Q. Bai
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - S. P. Ringer
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Z. Gao
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Y. X. Xi
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - W. Martens
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - J. D. Riches
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
| | - R. L. Frost
- Australian Key Centre for Microanalysis & Microscopy and School of Chemistry, The University of Sydney, NSW 2006, Australia, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China, School of Physical and Chemical Science, Queensland University of Technology, Brisbane 4000, Australia, School of Science, Xian Jiaotong University, Xian 710049, China, and Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia QLD 4072, Australia
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Gao XP, Zheng ZF, Zhu HY, Pan GL, Bao JL, Wu F, Song DY. Rotor-like ZnO by epitaxial growth under hydrothermal conditionsElectronic supplementary information (ESI) available: TEM images of the rod-like and rotor-like ZnO in the bright field and dark field. See http://www.rsc.org/suppdata/cc/b4/b403252g/. Chem Commun (Camb) 2004:1428-9. [PMID: 15179498 DOI: 10.1039/b403252g] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.0] [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: 11/21/2022]
Abstract
Rotor-like ZnO was grown from a mixture of rod-like ZnO powder and a saturated Zn(OH)(4)(2-) solution under moderate hydrothermal conditions at 100 degree C, in which the precursor rod-like ZnO crystal plane acts as a matrix core, and the branched nanorods showed fast epitaxial growth on the six directions around the prism core.
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Affiliation(s)
- X P Gao
- Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China.
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Song DY, Jones RJ, Welsh JS, Haulk TL, Korman LT, Noga S, Goodman S, Herman M, Mann R, Marcellus D, Vogelsang G, Ambinder RF, Abrams RA. Phase I study of escalating doses of low-dose-rate, locoregional irradiation preceding Cytoxan-TBI for patients with chemotherapy-resistant non-Hodgkin's or Hodgkin's lymphoma. Int J Radiat Oncol Biol Phys 2003; 57:166-71. [PMID: 12909229 DOI: 10.1016/s0360-3016(03)00508-x] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE In patients in whom bone marrow transplantation (BMT) fails, recurrence often occurs at sites known to have contained disease before initiating BMT. The purpose of this study was to find the maximal tolerable dose of locoregional irradiation (LRT) between 1000 and 2000 cGy that could be integrated with our Cytoxan-total body irradiation (TBI) BMT conditioning regimen in the treatment of lymphoma. METHODS AND MATERIALS Patients had Hodgkin's or non-Hodgkin's lymphoma in chemotherapy-refractory relapse. All patients received LRT to a maximum of three sets of fields encompassing either all current or all previously known sites of disease. Cytoxan-TBI consisted of cyclophosphamide 50 mg/kg daily for 4 days followed by TBI of 1200 cGy given in four fractions. RESULTS Twenty-one patients were enrolled. Radiation Therapy Oncology Group Grade 3 in-field acute toxicity was observed in 1 patient at each dose level up to 1500 cGy and in 3 of 6 patients receiving 2000 cGy. Clinically evident late toxicities were limited to hypothyroidism and one second malignancy occurring outside the LRT fields. CONCLUSION Low-dose-rate, LRT with concurrent Cytoxan-TBI before BMT has acceptable rates of in-field toxicity for doses up to 1500 cGy in five fractions. This regimen safely permits the use of a total combined radiation dose of up to 2700 cGy during 2 weeks, with encouraging in-field response rates in treatment-refractory patients.
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Affiliation(s)
- D Y Song
- Division of Radiation Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Oncology Center, Baltimore, MD 21231, USA
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Song DY, Lawrie WT, Abrams RA, Kafonek DR, Bayless TM, Welsh JS, DeWeese TL. Acute and late radiotherapy toxicity in patients with inflammatory bowel disease. Int J Radiat Oncol Biol Phys 2001; 51:455-9. [PMID: 11567821 DOI: 10.1016/s0360-3016(01)01629-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [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: 12/26/2022]
Abstract
PURPOSE To evaluate the incidence of gastrointestinal complications in patients with inflammatory bowel disease (IBD) receiving radiotherapy (RT) and to identify possibly avoidable factors associated with these complications. METHODS AND MATERIALS Twenty-four patients were identified and their records reviewed; all had a history of IBD before receiving RT to fields encompassing some portion of the gastrointestinal tract (Crohn's disease) or to the abdomen or pelvis (ulcerative colitis or IBD not otherwise specified). RESULTS Five of 24 patients (21%) experienced Grade > or =3 acute gastrointestinal toxicity; all 5 received concurrent chemotherapy. Two of 24 patients (8%) experienced Grade > or =3 late gastrointestinal toxicity. There were no significant correlations between complications and IBD type, prior IBD-related surgery, use of medications for IBD, or status of IBD. CONCLUSION Patients with IBD may have an increased risk for severe acute RT-related gastrointestinal complications that is more modest than generally perceived, because all patients who had Grade > or =3 acute complications in this study had received concurrent chemotherapy (p = 0.04). Further study is needed to assess this risk, as well as the impact of RT on these patients' future gastrointestinal morbidity.
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Affiliation(s)
- D Y Song
- Division of Radiation Oncology, Johns Hopkins Hospital, Baltimore, MD, USA
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Song DY, Hurh YS, Cho JW, Lim JH, Lee DW, Lee JS, Chung Y. 4 x 10 Gb/s terrestrial optical free space transmission over 1.2 km using an EDFA preamplifier with 100 GHz channel spacing. Opt Express 2000; 7:280-284. [PMID: 19407876 DOI: 10.1364/oe.7.000280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrate a transmission of 4 x 10 Gb/s WDM channels over 1.2 km of free space in 1.55-microm band. The transmitted beam is coupled into a single-mode fiber through a fiber-pigtailed collimator, which enables the use of standard 100-GHz channel spacing and an optical preamplifier at the receiver. All the received channels have Q values higher than 6.
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Abstract
BACKGROUND Microsurgery and single-fraction radiosurgery for acoustic neuromas are associated with high rates of control, but can result in facial palsy and trigeminal neuropathy. To reduce the morbidity of treatment for acoustic neuromas while maintaining efficacy, we explored fractionated stereotactic radiosurgery (FSR). METHODS We reviewed data for 31 acoustic neuromas in 30 patients treated with 25 Gy (linear accelerator) given in 5 consecutive daily fractions. The minimum follow-up was 6 months (6-44 months). The mean tumor volume was 1.1 cm(3) (0.1-8.74 cm(3)). RESULTS All tumors remain controlled (9 smaller, 22 unchanged). No patient has experienced post-radiosurgery facial motor dysfunction. Two patients developed new trigeminal neuropathy; 2 patients with preexisting trigeminal nerve symptoms had improvement after FSR. Balance improved in 3 patients, was unchanged in 20 and worsened in 7 patients. Of the 12 patients with useful hearing (PTA < or = 50 dB) prior to treatment, 9 patients retained useful hearing following FSR. Subjectively, of 25 patients with any hearing prior to treatment, 2 had improvement, 10 remained unchanged and 13 had worsening. CONCLUSIONS Short course FSR for acoustic neuromas results in acceptable toxicity and may provide high control of tumors. Longer follow-up is needed to assess outcomes.
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Affiliation(s)
- D Y Song
- Johns Hopkins Oncology Center, Division of Radiation Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Abstract
Canonical structure of a generalized time-periodic harmonic oscillator is studied by finding the exact action variable (invariant). Hannay's angle is defined if closed curves of constant action variables return to the same curves in phase space after a time evolution. The condition for the existence of Hannay's angle turns out to be identical to that for the existence of a complete set of (quasi)periodic wave functions. Hannay's angle is calculated, and it is shown that Berry's relation of semiclassical origin on geometric phase and Hannay's angle is exact for the cases considered.
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Affiliation(s)
- DY Song
- Department of Physics, Sunchon National University, Sunchon 540-742, Korea
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Affiliation(s)
- T L DeWeese
- Johns Hopkins Oncology Center, Division of Radiation Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
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Abstract
Cardiopulmonary parameters were measured in 12 ponies (small horses) before anaesthesia and, following induction with xylazine and ketamine, during maintenance of anaesthesia with desflurane. In six of the ponies (group A) anaesthesia was maintained for three hours with desflurane at an end-tidal concentration of 7.4 per cent. In the other six ponies (group B), anaesthesia was maintained in the same way for one hour and then the effects of end-tidal desflurane concentrations of 7.4 per cent and 9.6 per cent with and without artificial ventilation were investigated. In group A ponies the arterial blood pressure and the systemic vascular resistance index (SVRI) decreased significantly during the first 45 minutes of anaesthesia but recovered with time. The cardiac index and heart rates were unchanged throughout the measurement period but arterial carbon dioxide tensions increased significantly. In group B ponies, with either mode of ventilation, increasing desflurane concentration resulted in decreases in arterial blood pressure, cardiac index and mixed venous oxygen tension, although the changes were not always statistically significant. There were marked individual differences in the cardiovascular responses to the high desflurane concentrations, the minimum mean arterial blood pressure ranging from 35 to 62 mm Hg, and the cardiac index from 23 to 50 ml/kg/min. The study concludes that during maintenance of anaesthesia with end tidal concentrations of desflurane of 7.4 per cent, cardiac index is well maintained and the initial fall in arterial blood pressures results from a fall in SVRI. However, increasing the concentration of desflurane causes a fall in blood pressure due to cardiac depression.
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Affiliation(s)
- K W Clarke
- Department of Farm Animal and Equine Medicine and Surgery, Royal Veterinary College, North Mymms, Hatfield, Hertfordshire
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Song DY. S matrix of collective field theory. Phys Rev D Part Fields 1995; 51:5790-5796. [PMID: 10018334 DOI: 10.1103/physrevd.51.5790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sperbeck SJ, Song DY, LaBarbera AR. Solubilization and characterization of high affinity follicle-stimulating hormone receptors from porcine granulosa cells. J Recept Res 1993; 13:925-42. [PMID: 8510071 DOI: 10.3109/10799899309073701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Follicle-stimulating hormone (FSH)-receptors were solubilized from immature porcine ovarian granulosa cells with retention of high affinity 125I-porcine FSH-binding activity. The optimal concentration of Triton X-100 for solubilization was 0.5% (w/v), and the optimal cellular protein concentration 25 mg/ml. Glycerol (30%) increased recovery of solubilized receptor. 125I-pFSH-binding affinity ranged from 4 x 10(10) M-1 to 8 x 10(10) M-1 in either the absence or presence of glycerol. 125I-pFSH-binding capacity was 5 fmol/mg protein in the absence of glycerol and 58 fmol/mg protein in the presence of glycerol as determined by equilibrium saturation binding analysis. By gel permeation chromatography, the apparent size of the 125I-pFSH-receptor complex was 462 kDa in the absence of glycerol and 762 kDa in the presence of glycerol. Ligand blotting of solubilized receptor yielded a single species with an apparent molecular weight of 200 kDa under nonreducing conditions and a single species with an apparent molecular weight of 60 kDa under reducing conditions. These studies indicated that high affinity FSH-binding activity can be solubilized from membranes of immature porcine granulosa.
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Affiliation(s)
- S J Sperbeck
- Department of Obstetrics and Gynecology, University of Cincinnati College of Medicine, OH 45267-0526
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Song DY, Zhuang H, Li Z. [Hepatitis E in Hetian city. Analysis of 562 cases]. Zhonghua Nei Ke Za Zhi 1992; 31:275-7, 316. [PMID: 1478123] [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: 12/27/2022]
Abstract
Between August and September 1987, 562 patients were hospitalized with acute non-A, non-B hepatitis. The male to female ratio was 1.4:1, and 75% of the patients was of 15-40 years of age. Jaundice developed in 87%. The overall case-fatality rate was 1.4%, but it was highest among pregnant women (5.2%) and newborn infants (24.2%). In general, the disease was self-limited with no evidence of chronic infection. Liver biopsies obtained during the acute illness showed portal inflammation and cytoplasmic cholestasis. Of 31 specimens of stool examined with a prototype ELISA for HEV antigen, 8 were found to be 'positive' and confirmed with immune electron microscopy (IEM). IEM examination of 'patients' stool revealed 27-32 nm viruslike particles. Inoculation of rhesus monkeys with patients stool containing virus-like particles produced acute hepatitis and the acute phase serum reacted with these particles in IEM, while preinoculation serum specimens were non-reactive.
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Affiliation(s)
- D Y Song
- Urumqi General Hospital, Lanzhou Military Region
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Wang XC, Liu XM, Tan CZ, Liu R, Luo SL, Yue XH, Qin F, Bu ZR, Tian X, Song DY. Epidemic non-A, non-B hepatitis in Xinjiang. Clinical and pathologic observations. Chin Med J (Engl) 1990; 103:890-8. [PMID: 2125910] [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: 12/30/2022] Open
Abstract
131 cases of epidemic hepatitis from two villages in Xinjiang, were admitted to the provisional infectious diseases hospital from February to April 1987. In 125 (95%) patients neither anti-HAV IgM nor anti-HBc IgM were positive. 118 (90%) were drinking water from a local stream of the Hotan River. The study was conducted on 125 patients aged from 5 to 90 years, with a mean of 26.4 years. There were slightly more males than females, a ratio of 1.5 to 1. The incubation period was roughly estimated to be 17 to 37 days (mean 24.8 days). All subjects were jaundiced. 12 patients (including 6 pregnant women) had cholestatic symptoms. Except one woman who died of postpartum bleeding, all patients ran a benign course without fulminant hepatic failure. Pathologic changes of liver biopsies from 35 cases included lobular damage and inflammation, ballooned hepatocytes with clear cytoplasm and delineated cell membrane which were named "clear cell". There were cholestasis of different degrees in the acute icteric stage and fatty changes in the convalescent stage. It was seen under the electron microscope that the livers of 8 cases had neither tubular structure nor sponge-like inclusions, but had nuclear changes including curled edge of nuclear membrane and nuclear heterochromatin condensed in masses. Liver biopsies were repeated in 7 cases followed up for 6-13 months, and hepatohistology was normal in 5. Of the other two cases there was one of each.
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Affiliation(s)
- X C Wang
- Department of Infectious Diseases, PLA No. 376 Hospital, Urumqi
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Bartella J, Berning PH, Bovard B, Carniglia CK, Casparis E, Costich VR, Dobrowolski JA, Gibson UJ, Herrmann R, Ho FC, Jacobson MR, Klinger RE, Leavitt JA, Lotz HG, Macleod HA, Messerly MJ, Mitchell DF, Muenz WD, Nebesny KW, Pfefferkorn R, Saxe SG, Song DY, Swab P, Swenson RM, Thoeni W, Van Milligen F, Vincent S, Waldorf A. Multiple analysis of an unknown optical multilayer coating. Appl Opt 1985; 24:2625. [PMID: 18223932 DOI: 10.1364/ao.24.002625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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Song DY, Sprague RW, Macleod HA, Jacobson MR. Progress in the development of a durable silver-based high-reflectance coating for astronomical telescopes. Appl Opt 1985; 24:1164. [PMID: 18217092 DOI: 10.1364/ao.24.001164] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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Thirkill CE, Song DY, Gregerson DS. Application of monoclonal antibodies to detect intraocular mycoplasma antigens in Mycoplasma arthritidis-infected Sprague-Dawley rats. Infect Immun 1983; 40:389-97. [PMID: 6339406 PMCID: PMC264859 DOI: 10.1128/iai.40.1.389-397.1983] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Sprague-Dawley rats infected with Mycoplasma arthritidis by tail vein inoculation develop extensive disseminated joint inflammation, frequently accompanied by conjunctivitis and anterior uveitis. The intraocular inflammation is apparently directed at mycoplasmas localized within the stroma of the ciliary body, which have been detected with monoclonal antibodies by indirect immunofluorescence. The monoclonal antibodies are directed against an antigenic determinant on the enzyme arginine deiminase isolated from M. arthritidis, but they do not react with the same enzyme derived from Mycoplasma hominis. The antigen bound by the monoclonal antibodies can also be detected by immunofluorescence in M. arthritidis-infected tissue cultures and is not lost after glutaraldehyde fixation or paraffin-embedding procedures. The value in the application of monoclonal antibodies reactive with arginine deiminase lies in the fact that although this enzyme may be found in mycoplasmas and several other species of bacteria it is not a normal constituent of mammalian tissues.
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