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Xiang HB, Yunus A, Tian Z, Chen JT, Yadikan Y. [Advances in the application of prosthetic reconstruction after tumor resection of the distal tibia:a systematic review]. Zhonghua Wai Ke Za Zhi 2023; 61:1130-1134. [PMID: 37932151 DOI: 10.3760/cma.j.cn112139-20230510-00200] [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: 11/08/2023]
Abstract
The limited coverage of soft tissue and complex biomechanical factors make resection and reconstruction of distal tibial tumors extremely challenging. Megaprosthesis can provide good mechanical strength for tumor en bloc resection, but there are many postoperative complications, and the problems of insufficient soft tissue coverage and postoperative ankle instability must be solved. The development of three-dimensional digital technology may provide a new treatment strategy for distal tibial reconstruction. Compared to ankle joint preservation endoprostheses, the rapid osseointegration effect of three dimensional-printed megaprosthesis with ankle arthrodesis provides better ankle joint stability and postoperative function. In addition, the three dimensional-printed megaprosthesis may improve complications such as insufficient soft tissue coverage and talus collapse by reducing the circumference of the prosthesis and matching it with the talus through personalized design. Of course, there are few research reports on distal tibial prostheses, and the safety of three dimensional-printed megaprosthesis with ankle arthrodesis needs to be confirmed through extensive long-term follow-up studies. The selection of proximal and distal fixation methods for prostheses needs to be explored in future research.
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Affiliation(s)
- H B Xiang
- Department of Bone Tumor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Akbar Yunus
- Department of Bone Tumor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Z Tian
- Department of Bone Tumor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - J T Chen
- Department of Bone Tumor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Yashengjiang Yadikan
- Department of Bone Tumor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
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Liu H, Dai H, Chen J, Xu J, Tao Y, Lin H. Interactive similar patient retrieval for visual summary of patient outcomes. J Vis (Tokyo) 2022. [DOI: 10.1007/s12650-022-00898-9] [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: 11/24/2022]
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Zhang X, Yang ZY, Yang AK, Zhang Q, Li QL, Chen SW, Chen JT, Song M. [The clinical value of oral robotic surgery in the treatment of oropharyngeal squamous cell carcinoma]. Zhonghua Zhong Liu Za Zhi 2022; 44:570-576. [PMID: 35754232 DOI: 10.3760/cma.j.cn112152-20200731-00698] [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: 06/15/2023]
Abstract
Objective: To explore the therapeutic effects of transoral robotic surgery (TORS) and traditional surgical modes in oropharyngeal squamous cell carcinoma (OPSCC). Methods: The clinicopathological data of patients with oropharyngeal squamous cell carcinoma treated at Sun Yat-sen University Cancer Center from 2010 to 2018 were retrospectively analyzed. 135 cases were treated with traditional surgery (non-TORS group), while 52 cases were treated with TORS (TORS group). The prognosis of the two groups of patients were analyzed by Kaplan-Meier method and Log rank test, the influencing factors were analyzed by Cox regression model. Results: The 2-year overall survival (OS, 94.2%) and 2-year progression-free survival (PFS, 93.8%) of patients in the TORS group were better than those in the non-TORS group (71.4% and 71.4%, respectively, P<0.05). The 2-year OS (93.3%) and 2-year PFS (92.8%) of TORS group patients in T1-2 stage were better than those of non-TORS group (73.1% and 72.8%, respectively, P<0.05). The 2-year OS (95.8%) and 2-year PFS (95.2%) of patients with stage Ⅰ to Ⅱ in the TORS group were not significantly different from those in the non-TORS group (84.1% and 83.9%, respectively, P>0.05). The 2-year OS (92.9%) and 2-year PFS rate (92.7%) of patients with stage Ⅲ to Ⅳ in the TORS group were better than those in the non-TORS group (64.7% and 63.9%, respectively, P<0.05). The 2-year OS (94.4%) of HPV-positive patients in the TORS group was not significantly different from that in the non-TORS group (83.3%, P=0.222). The 2-year OS of HPV-negative patients in the TORS group (94.1%) was significantly different from that in the non-TORS group (43.7%, P<0.001). HPV status was an independent prognostic factor (P=0.008). Conclusions: TORS has a better prognosis in the treatment of oropharyngeal squamous cell carcinoma compared with the traditional treatment methods. The patients with T1-T2 can achieve better survival benefits after TORS treatment. The HPV-positive OPSCC patients has a better prognosis than that of HPV-negative OPSCC patients, and regardless of HPV status, OPSCC patients in the TORS group could obtain a better survival prognosis.
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Affiliation(s)
- X Zhang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Z Y Yang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - A K Yang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Q Zhang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Q L Li
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - S W Chen
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - J T Chen
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - M Song
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
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Zhang X, Chen SW, Yang ZY, Chen JT, Su X, Yang AK, Song M. [Application of transoral robotic surgery in treatment of oropharyngeal squamous cell carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:545-551. [PMID: 35610671 DOI: 10.3760/cma.j.cn115330-20210731-00505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the therapeutic and prognostic outcomes of transoral robotic surgery (TORS) for oropharyngeal squamous cell carcinoma (OSCC). Methods: A retrospective study of 99 OSCC patients treated with TORS in Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center between April 2017 and May 2021 was conducted. There were 84 males and 15 females, with an age range of 35-85 years. Patients' clinical characteristics, including clinical staging, HPV infection status, perioperative management and postoperative adjuvant treatment, were recorded. The overall survival (OS) and progression-free survival (PFS) were analyzed. The survival outcomes were analyzed with Kaplan-Meier method and Log-rank test. Results: The hospital stay of OSCC patients with TORS was (5.3±2.9) days and the average time of postoperative nasal feeding tube indwelling was (15.2±10.8) days. Among the 99 patients, 21 (21.2%) received tracheotomy and the average time of tracheotomy tube indwelling was (11.9±11.4) days. The two-year OS and PFS in patients with follow-up over two years were 94.0% and 87.7%, respectively and the three-year OS and PFS of patients with follow-up over three years were 94.0% and 78.9%, respectively. The two-year OS and PFS were respectively 97.4% and 88.9%, for patients with stages I-II and 86.8% and 88.9% for patients with stages III-IV. HPV-negative and HPV-positive patients had respectively two-year OS (100.0% vs. 91.5%) and PFS (88.9% vs. 87.2%). There was no significantly statistical difference in survival between patients with and without adjuvant radiotherapy after TORS (82.6% vs. 90.5%, HR=0.52, 95%CI: 0.12-2.23, P=0.400). Conclusions: TORS is more suitable for the treatment of patients with early (Ⅰ-Ⅱ) or HPV-positive oropharyngeal squamous cell carcinoma, and the recovery after TORS treatment is good.
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Affiliation(s)
- X Zhang
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - S W Chen
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Z Y Yang
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - J T Chen
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - X Su
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - A K Yang
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - M Song
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
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He JQ, Chen JT, Li JH, Chen WZ, Liang XY, Huang HY, Wei HG, Huang WY, Wang JL, Lin M, Yang PK, Chen XY, Liu XZ. [Drug-resistant gene polymorphisms in Plasmodium falciparum isolated from Bioko Island, Equatorial Guinea in 2018 and 2019]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:396-400. [PMID: 34505447 DOI: 10.16250/j.32.1374.2021128] [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: 06/13/2023]
Abstract
OBJECTIVE To investigate the genetic polymorphisms of Plasmodium falciparum multidrug resistance protein 1 (PfMDR1), chloroquine resistance transporter (PfCRT) and Kelch 13 (PfK13) genes in Bioko Island, Equatorial Guinea, so as to provide insights into the development of the malaria control strategy in local areas. METHODS A total of 85 peripheral blood samples were collected from patients with Plasmodium falciparum infections in Bioko Island, Equatorial Guinea in 2018 and 2019, and genomic DNA was extracted. The PfMDR1, PfCRT and PfK13 genes were amplified using a nested PCR assay. The amplification products were sequenced, and the gene sequences were aligned. RESULTS There were no mutations associated with artemisinin resistance in PfK13 gene in Bioko Island, Equatorial Guinea, while drug-resistant mutations were detected in PfMDR1 and PfCRT genes, and the proportions of PfMDR1_N86Y, PfMDR1_Y184F and PfCRT_K76T mutations were 35.29% (30/85), 72.94% (62/85) and 24.71% (21/85), respectively. CONCLUSIONS There are mutations in PfMDR1, PfCRT and PfK13 genes in P. falciparum isolates from Bioko Island, Equatorial Guinea.
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Affiliation(s)
- J Q He
- Department of Laboratory Medicine, Humen Hospital of Dongguan City, Guangdong Province, Dongguan 523000, China
- The Chinese Medical Aid Team to the Republic of Equatorial Guinea, Guangdong Province, China
| | - J T Chen
- The Chinese Medical Aid Team to the Republic of Equatorial Guinea, Guangdong Province, China
- Department of Laboratory Medicine, Huizhou Central Hospital, Guangdong Province, China
| | - J H Li
- The Chinese Medical Aid Team to the Republic of Equatorial Guinea, Guangdong Province, China
- Department of Laboratory Medicine, Shijie Hospital, Dongguan City, Guangdong Province, China
| | - W Z Chen
- Chaozhou People's Hospital Affiliated to Shantou University, China
| | - X Y Liang
- Department of Laboratory Medicine, Huizhou Central Hospital, Guangdong Province, China
- Chaozhou People's Hospital Affiliated to Shantou University, China
| | - H Y Huang
- Chaozhou People's Hospital Affiliated to Shantou University, China
| | - H G Wei
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, China
| | - W Y Huang
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, China
| | - J L Wang
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, China
| | - M Lin
- Chaozhou People's Hospital Affiliated to Shantou University, China
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, China
| | - P K Yang
- Chaozhou People's Hospital Affiliated to Shantou University, China
| | - X Y Chen
- Chaozhou People's Hospital Affiliated to Shantou University, China
| | - X Z Liu
- Chaozhou People's Hospital Affiliated to Shantou University, China
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Abstract
Hereditary gingival fibromatosis (HGF) is a rare genetic disorder featured by nonsyndromic pathological overgrowth of gingiva. The excessive gingival tissues can cause dental, masticatory, and phonetic problems, which impose severe functional and esthetic burdens on affected individuals. Due to its high recurrent rate, patients with HGF have to undergo repeated surgical procedures of gingival resection, from childhood to adulthood, which significantly compromises their quality of life. Unraveling the genetic etiology and molecular pathogenesis of HGF not only gains insight into gingival physiology and homeostasis but also opens avenues for developing potential therapeutic strategies for this disorder. Recently, mutations in REST (OMIM *600571), encoding a transcription repressor, were reported to cause HGF (GINGF5; OMIM #617626) in 3 Turkish families. However, the functions of REST in gingival homeostasis and pathogenesis of REST-associated HGF remain largely unknown. In this study, we characterized 2 HGF families and identified 2 novel REST mutations, c.2449C>T (p.Arg817*) and c.2771_2793dup (p.Glu932Lysfs*3). All 5 mutations reported to date are nonsenses or frameshifts in the last exon of REST and would presumably truncate the protein. In vitro reporter gene assays demonstrated a partial or complete loss of repressor activity for these truncated RESTs. When coexpressed with the full-length protein, the truncated RESTs impaired the repressive ability of wild-type REST, suggesting a dominant negative effect. Immunofluorescent studies showed nuclear localization of overexpressed wild-type and truncated RESTs in vitro, indicating preservation of the nuclear localization signal in shortened proteins. Immunohistochemistry demonstrated a comparable pattern of ubiquitous REST expression in both epithelium and lamina propria of normal and HGF gingival tissues despite a reduced reactivity in HGF gingiva. Results of this study confirm the pathogenicity of REST truncation mutations occurring in the last exon causing HGF and suggest the pathosis is caused by an antimorphic (dominant negative) disease mechanism.
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Affiliation(s)
- J T Chen
- Graduate Institute of Clinical Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei City, Taiwan
| | - C H Lin
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - H W Huang
- Genomics Research Center, Academia Sinica, Taipei City, Taiwan
| | - Y P Wang
- Department of Dentistry, National Taiwan University Hospital, Taipei City, Taiwan.,Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - P C Kao
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - T P Yang
- Dr. Lawrence Dental Clinic, Kaohsiung City, Taiwan
| | - S K Wang
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan.,Department of Pediatric Dentistry, National Taiwan University Children's Hospital, Taipei City, Taiwan
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Zhuo Y, Cai D, Chen J, Zhang Q, Li X. Pre-surgical peripheral blood inflammation markers predict surgical site infection following mesh repair of groin hernia. Medicine (Baltimore) 2021; 100:e25007. [PMID: 33655970 PMCID: PMC7939215 DOI: 10.1097/md.0000000000025007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 12/28/2020] [Accepted: 02/05/2021] [Indexed: 02/05/2023] Open
Abstract
Surgical site infection (SSI) is a costly postoperative complication with a decrease in the quality of life. We aimed to probe the predictive role of peripheral blood inflammation markers for SSI following mesh repair of groin hernia (GH).This retrospective study assessed the data of 1177 patients undergoing elective mesh repair of GH (open/laparoscopy) in the absence of antibiotic prophylaxis. The relation between demographics, surgical factors, pre-surgical laboratory results and the occurrence of SSI were investigated by univariate and multivariate analyses. Receiver operating characteristic analysis was performed to determine the optimal threshold of parameters and compare their veracity.The overall SSI rate was 3.2% with 1-year follow-up (38 superficial and 1 deep SSI). Patients with SSI had significant higher pre-surgical neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) than those without (P = .029 and P = .045, respectively); their NLR and PLR correlated positively with postoperative total days of antibiotic treatment for SSI (r = .689, P = .000; r = .493, P = .001; respectively). NLR and PLR had larger areas under the receiver operating characteristics curves than neutrophil (.875 vs. .601; P = .000; .726 vs. .601; P = .017). The combination of PLR and neutrophil/NLR raised the predictive sensitivity of PLR for SSI (sensitivity: PLR: 74.36%; PLR + neutrophil: 82.05%; PLR + NLR: 83.57%). On multivariate analyses, higher preoperative NLR (cut-off 2.44) and PLR (cut-off 125.42) were independent predictors for SSI.Higher pre-surgical NLR and PLR may be valuable predictors for SSI following elective mesh repair of GH.
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Affiliation(s)
| | - De Cai
- Department of Clinical Pharmacy
| | - Juntian Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Rd, Shantou, China
| | | | - Xinxin Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, No. 57 Changping Rd, Shantou, China
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Guo D, Yuan J, Xie A, Lin Z, Li X, Chen J. Diagnostic performance of circulating exosomes in human cancer: A meta-analysis. J Clin Lab Anal 2020; 34:e23341. [PMID: 32309888 PMCID: PMC7439344 DOI: 10.1002/jcla.23341] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 01/19/2020] [Revised: 02/29/2020] [Accepted: 03/28/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cancer has become a public health problem with high morbidity and mortality. Recent publications have shown that exosomes can be used as potential diagnostic biomarkers of cancer. However, the diagnostic accuracy and reliability of circulating exosomes remain unclear. The present meta-analysis was conducted to comprehensively summarize the overall diagnostic performance of circulating exosomes for cancer. METHODS Eligible studies published up to June 27, 2019, on PubMed, Embase, and Cochrane Library were selected for the meta-analysis. All statistical analyses were performed by STATA 15.1 statistical software and Meta-DiSc 1.4. Quality Assessment for Studies of Diagnostic Accuracy 2 tool was used to access the quality of included studies. A bivariate mixed-effects model was applied to calculate the diagnostic indexes from included studies. RESULTS A total of 5924 participants comprising 3161 cases and 2763 controls from 42 eligible studies were analyzed. The pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, diagnostic odds ratio, and the area under the curve with 95% confidence intervals (95% CI) were as follows: 0.79 (0.75-0.82), 0.81 (0.78-0.84), 4.1 (3.5-4.8), 0.26 (0.22-0.31), 16 (12-21), and 0.87 (0.84-0.89), respectively. Sensitivity analysis suggested no study exclusively contributed to the heterogeneity, and Deeks' funnel plot asymmetry test indicated no potential publication bias (P = .09). CONCLUSIONS The meta-analysis indicated that circulating exosomes could serve as effective and minimally invasive biomarkers for diagnosis of cancer, especially in patients with hepatocellular carcinoma or ovarian cancer, serum-based samples and exosomal proteins.
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Affiliation(s)
- Dongming Guo
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
- Shantou University Medical CollegeShantouChina
| | - Jinpeng Yuan
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Aosi Xie
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Zeyin Lin
- Department of UltrasoundThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Xinxin Li
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Juntian Chen
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
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Li X, Yuan J, Cao Q, Xie A, Chen J. MicroRNA‑383‑5p inhibits the proliferation and promotes the apoptosis of gastric cancer cells by targeting cancerous inhibitor of PP2A. Int J Mol Med 2020; 46:397-405. [PMID: 32626915 DOI: 10.3892/ijmm.2020.4603] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 03/20/2020] [Indexed: 02/05/2023] Open
Abstract
The aberrant expression of microRNA (miRNAor miR)‑383‑5p has been found in numerous types of cancer. However, the function of miR‑383‑5p in gastric cancer (GC) remains elusive and requires further investigation. In the present study, the level of miR‑383‑5p and cancerous inhibitor of PP2A (CIP2A) in GC cell lines was determined by reverse transcription‑quantitative PCR analysis. GC cell proliferation, apoptosis and cell cycle distribution were determined by the MTT assay and flow cytometry, respectively. The mRNA target of miR‑383‑5p was identified by dual luciferase activity assay. It was observed that the expression of miR‑383‑5p was lower and that of CIP2A was higher in GC cells compared with the GES‑1 normal human gastric epithelial cell line. Transfectoin with miR‑383‑5p mimic significantly inhibited GC cell proliferation, while it promoted cell apoptosis and G0/G1 arrest by targeting CIP2A. Taken together, the findings of the present study demonstrate that miR‑383‑5p inhibits GC cell proliferation and promotes apoptosis and G0/G1 arrest by targeting CIP2A, indicating that targeting miR‑383‑5p may hold promise as a future therapeutic strategy for patients with GC.
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Affiliation(s)
- Xinxin Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Jinpeng Yuan
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Qiangjian Cao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Aosi Xie
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Juntian Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
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Abstract
BACKGROUND Circular RNAs (circRNAs) are research hotspots in the network of noncoding RNAs in numerous tumours. The purpose of our study was to evaluate the clinicopathological, prognostic and diagnostic value of circRNAs in colorectal cancer. METHODS The PubMed, Cochrane Library, and Web of Science online databases were searched for relevant studies before May 15, 2019. Pooled hazard ratios (HRs) and odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the association between circRNAs expression, and overall survival (OS) and clinical parameters. Pooled sensitivity, specificity, and the area under the curve (AUC) were employed to assess the diagnostic value of circRNAs. RESULTS A total of 19 studies were enrolled in this meta-analysis, with 11 on clinicopathological parameters, 8 on prognosis and 7 on diagnosis. For clinicopathological and prognostic value, elevated expression of oncogenic circRNAs was correlated with poor clinical parameters (tumor size: OR = 1.769, 95% CI: 1.097-2.852; differentiation grade: OR = 1.743, 95% CI: 1.032-2.946; TNM stage: OR = 3.320, 95% CI: 1.529-7.207; T classification: OR = 3.410, 95% CI: 2.088-5.567; lymph node metastasis: OR = 3.357, 95% CI: 2.160-5.215; distal metastasis: OR = 4.338, 95% CI: 2.503-7.520) and worse prognosis (HR = 2.29, 95% CI: 1.50-3.52). However, elevated expression of tumor-suppressor circRNAs was correlated with better clinical parameters (differentiation grade: OR = 0.453, 95% CI: 0.261-0.787; T classification: OR = 0.553, 95% CI: 0.328-0.934; distal metastasis: OR = 0.196, 95% CI: 0.077-0.498) and favorable prognosis (HR = 0.37, 95% CI: 0.22-0.64). For diagnostic value, the pooled sensitivity, specificity, and AUC were 0.82 (95% CI, 0.75-0.88), 0.72 (95% CI, 0.66-0.78), and 0.82 (95% CI, 0.78-0.85), respectively. CONCLUSIONS These results indicate that circRNAs may be potential biomarkers for the diagnosis and prognosis of colorectal cancer.
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Affiliation(s)
- Jinpeng Yuan
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Dongming Guo
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Xinxin Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Shantou University Medical College, Shantou, China.
| | - Juntian Chen
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Shantou University Medical College, Shantou, China.
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11
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Guo D, Li X, Xie A, Cao Q, Zhang J, Zhang F, Li W, Chen J. Differences in oncological outcomes and inflammatory biomarkers between right-sided and left-sided stage I-III colorectal adenocarcinoma. J Clin Lab Anal 2020; 34:e23132. [PMID: 31755593 PMCID: PMC7171299 DOI: 10.1002/jcla.23132] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 08/24/2019] [Revised: 10/16/2019] [Accepted: 11/10/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the differences in oncological outcome and inflammatory biomarkers between right-sided colon cancer (RCC) and left-sided colorectal cancer (LCRC). METHODS We retrospectively analyzed 339 patients with stage I-III colorectal cancer, including 125 RCC patients and 214 LCRC patients, who underwent radical resection from January 2012 to January 2014. Comparison of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and lymphocyte-to-monocyte ratio (LMR) between RCC and LCRC was evaluated using the Mann-Whitney U test. Overall survival (OS) and disease-free survival (DFS) were analyzed using Kaplan-Meier analysis and compared using the log-rank test. Univariate and multivariate Cox regression analyses were used to identify the prognostic value of inflammatory markers. RESULTS Patients with RCC had higher NLR (P = .002) and PLR (P < .001) but lower LMR (P = .002) compared to LCRC. In stage I-III, RCC showed poorer OS and DFS than LCRC (61.6% vs 71.5%, P = .018; 64.8% vs 76.2%, P = .006). Univariate and multivariate analyses indicated that NLR, PLR, and LMR were independent predictors for both OS and DFS in RCC, whereas only PLR was found to be an independent prognostic predictor in LCRC. CONCLUSION The prognosis and prognostic value of inflammatory biomarkers were significantly different between RCC and LCRC. Novel therapeutic strategies are needed, and proper prognostic predictors should be selected according to colorectal tumor location.
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Affiliation(s)
- Dongming Guo
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Xinxin Li
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Aosi Xie
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Qiangjian Cao
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Jinhai Zhang
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Feiran Zhang
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Wei Li
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Juntian Chen
- Department of Gastrointestinal SurgeryThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
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Abstract
PURPOSE To develop a nomogram for predicting 5-year incidence of type 2 diabetes (T2D) in Chinese adults. METHODS This is a retrospective cohort study from a prospectively collected database. We included a total 32,766 adults free of T2D at baseline with a median follow-up of 3 years. Univariate and multivariate Cox regression analyses were applied to identify independent predictors. A nomogram was constructed to predict 5-year incident rate of T2D based on the multivariate analysis results. Harrell's C-indexes and calibration plots were used to evaluate the accuracy of the nomogram in both internal and external validations. RESULTS The overall prevalence of T2D was 2.1%. Participants were randomly divided into a training set (n = 21,844) and a validation set (n = 10,922). After multivariate analysis in the training set, age, sex, BMI, hypertension, dyslipidemia, smoking status, and family history were found as risk predictors and integrated into the nomogram. Harrell's C-indexes were 0.815 (95% CI: 0.797-0.834) and 0.779 (95% CI: 0.747-0.811) in the training and validation sets, respectively. The calibration plots demonstrated good agreement between the estimated probability and the actual observation. CONCLUSION Our nomogram could be a simple and reliable tool for predicting 5-year risk of developing T2D in high-risk Chinese. Through the model, early identifying high-risk individuals is helpful for timely intervention to reduce the incidence of T2D.
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Affiliation(s)
- Zeyin Lin
- Department of Ultrasound, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Dongming Guo
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Juntian Chen
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Baoqun Zheng
- Department of Ultrasound, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China.
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Klein AK, Laug EP, Datta PR, Watts JO, Chen JT. Metabolites: Reductive Dechlorination of DDT to DDD and Isomeric Transformation of o,p’-DDT to p,p’-DDT In Vivo. J AOAC Int 2020. [DOI: 10.1093/jaoac/47.6.1129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Feeding p,p’-DDT and o,p’-DDT separately at a level of 50 ppm in the diet of rats causes reductive dechlorination of DDT to DDD in the liver. No DDD was found in the fat. DDE is not involved in the metabolic pathway. Feeding o,p’-DDT yields evidence of isomeric conversion to p,p’-DDT in the fat stores. The proportion of the p,p’-DDT found to the o,p’-isomer observed is approximately 7:1.
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Affiliation(s)
- A K Klein
- Food and Drug Administration, Washington, D.C. 20204
| | - E P Laug
- Food and Drug Administration, Washington, D.C. 20204
| | - P R Datta
- Food and Drug Administration, Washington, D.C. 20204
| | - J O Watts
- Food and Drug Administration, Washington, D.C. 20204
| | - J T Chen
- Food and Drug Administration, Washington, D.C. 20204
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Chen JT, Zhou CY, He N, Wu YP. Optimal acquisition time to discriminate between breast cancer subtypes with contrast-enhanced cone-beam CT. Diagn Interv Imaging 2020; 101:391-399. [PMID: 32008993 DOI: 10.1016/j.diii.2020.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/29/2019] [Accepted: 01/02/2020] [Indexed: 01/09/2023]
Abstract
PURPOSE To identify the optimal acquisition time to best discriminate between benign and malignant breast lesions on contrast-enhanced cone beam CT (CE-CBCT) and evaluate the potential of CE-CBCT to differentiate between breast cancer subtypes. MATERIAL AND METHOD A total of 98 women with a mean age of 49±10 (SD) years (range: 29-77 years) with 100 BI-RADS 4 or 5 breast lesions were prospectively included. CE-CBCT images were obtained at 1- and 2-min after intravenous administration of iodinated contrast material. Contrast enhancement of breast lesions on CE-CBCT were evaluated and compared between different subtypes. Cut-off values for best discriminating between benign and malignant breast lesions with CE-CBCT were obtained from receiver operating characteristic curves. RESULTS Malignant breast lesions showed greater enhancement than benign ones at 1-min (67.28±39.79 [SD] HU vs. 42.27±40.31 [SD] HU, respectively; P=0.007) and 2-min (70.93±38.05 [SD] HU vs. 48.94±41.83 [SD] HU, respectively; P=0.016) after intravenous administration of contrast material. At 1-min after intravenous administration of contrast material, an optimal cut-off value of 54.43 HU was found to best discriminate between malignant and benign breast lesions (AUC=0.681; 95%CI: 0.558-0.805; P=0.006) yielding 69.0% sensitivity (95%CI: 56.9-79.5%) and 69.2% specificity (95% CI: 48.2-85.7%). At 2-min, an optimal cut-off value of 72.65 HU was found to best discriminate between malignant and benign breast lesions (AUC=0.654; 95%CI: 0.535-0.774; P=0.020) yielding 50.7% sensitivity (95%CI: 38.6-62.8%) and 80.8% specificity (95%CI: 60.6-93.4%). CE-CBCT helped differentiate between immunohistochemical subtypes of breast lesions with lowest enhancement for triple negative lesions. No differences in enhancement were found among histopathological subtypes lesions at 1-min (P=0.478) and 2-min (P=0.625). CONCLUSION CE-CBCT helps discriminate between malignant and benign breast lesions, with best capabilities obtained at 1-min after intravenous administration of contrast material. For malignant lesions, quantitative analysis of enhancement on CE-CBCT helps differentiate between immunohistochemical subtypes.
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Affiliation(s)
- J T Chen
- Department of Medical Imaging and Image-guided Therapy, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 510060 Guangzhou, China
| | - C Y Zhou
- Department of Medical Imaging and Image-guided Therapy, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 510060 Guangzhou, China
| | - N He
- Department of Medical Imaging and Image-guided Therapy, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 510060 Guangzhou, China
| | - Y P Wu
- Department of Medical Imaging and Image-guided Therapy, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, 510060 Guangzhou, China.
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15
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Abstract
Abstract
Background: Surgical site infection (SSI) is a complication of mesh repair of inguinal hernia (IH) with an increase in length of stay and costs. We investigated both controllable and non-controllable risk factors for SSI following elective mesh repair of IH. Methods: A retrospective analysis was conducted of 1177 adult patients who underwent elective mesh repair of IH (not receiving antibiotic prophylaxis) from January 2010 to September 2019. Demographics, surgical variables and laboratory data were extracted from the electronic medical records. Receiver operating characteristic (ROC) analysis was performed to determine the optimal threshold of continuous variables. Independent risk factors for SSI were identified by univariate and multivariate analyses. Results: In total, 647 open and 530 laparoscopic IH repairs were included. The overall SSI rate within 30 days after surgery was 3.2% (39/1342 hernias) in the absence of antibiotic prophylaxis. Both the preoperative neutrophil‐lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) were negatively correlated with the postoperative period of SSI (r = -0.368, P = 0.021; r = -0.334, P = 0.038, respectively). On multivariate analyses, body mass index (BMI) > 24.6 kg/m 2 (odds ratio [OR], 1.152; 95% confidence interval [CI], 1.041-1.275), current smoker (OR, 4.226; 95% CI, 1.222-14.611), preoperative NLR > 1.97 (OR, 3.670; 95% CI, 1.675-8.041), and open approach (OR, 4.866; 95% CI, 1.877-12.618) were significantly related to postoperative SSI. Conclusion: The controllable risk factors (elevated BMI, current smoker) found out here may help to identify patients at high-risk of SSI, allowing targeted preventive measures. Preoperative NLR > 1.97 is a previous unrecorded predictor for SSI following elective mesh repair of IH. Further study is needed to ascertain the magnitude of their effect.
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Affiliation(s)
- Yeye Zhuo
- The First Affiliated Hospital of Shantou University Medical College
| | - Xinxin Li
- The First Affiliated Hospital of Shantou University Medical College
| | - Juntian Chen
- The First Affiliated Hospital of Shantou University Medical College
| | - Qian Zhang
- The First Affiliated Hospital of Shantou University Medical College
| | - De Cai
- The First Affiliated Hospital of Shantou University Medical College
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Yuan J, Xie A, Cao Q, Li X, Chen J. INHBB Is a Novel Prognostic Biomarker Associated with Cancer-Promoting Pathways in Colorectal Cancer. Biomed Res Int 2020; 2020:6909672. [PMID: 33083477 PMCID: PMC7563060 DOI: 10.1155/2020/6909672] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 09/05/2020] [Accepted: 09/15/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Inhibin subunit beta B (INHBB) is a protein-coding gene that participated in the synthesis of the transforming growth factor-β (TGF-β) family members. The study is aimed at exploring the clinical significance of INHBB in patients with colorectal cancer (CRC) by bioinformatics analysis. METHODS Real-time PCR and analyses of Oncomine, Gene Expression Omnibus (GEO), and The Cancer Genome Atlas (TCGA) databases were utilized to evaluate the INHBB gene transcription level of colorectal cancer (CRC) tissue. We evaluated the INHBB methylation level and the relationship between expression and methylation levels of CpG islands in CRC tissue. The corresponding clinical data were obtained to further explore the association of INHBB with clinical and survival features. In addition, Gene Set Enrichment Analysis (GSEA) was performed to explore the gene ontology and signaling pathways of INHBB involved. RESULTS INHBB expression was elevated in CRC tissue. Although the promoter of INHBB was hypermethylated in CRC, methylation did not ultimately correlate with the expression of INHBB. Overexpression of INHBB was significantly and positively associated with invasion depth, distant metastasis, and TNM stage. Cox regression analyses and Kaplan-Meier survival analysis indicated that high expression of INHBB was correlated with worse overall survival (OS) and disease-free survival (DFS). GSEA showed that INHBB was closely correlated with 5 cancer-promoting signaling pathways including the Hedgehog signaling pathway, ECM receptor interaction, TGF-β signaling pathway, focal adhesion, and pathway in cancer. INHBB expression significantly promoted macrophage infiltration and inhibited memory T cell, mast cell, and dendritic cell infiltration. INHBB expression was positively correlated with stromal and immune scores of CRC samples. CONCLUSION INHBB might be a potential prognostic biomarker and a novel therapeutic target for CRC.
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Affiliation(s)
- Jinpeng Yuan
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041 Guangdong, China
- Shantou University Medical College, China
| | - Aosi Xie
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Qiangjian Cao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Xinxin Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Juntian Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041 Guangdong, China
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Peng JQ, Li YQ, Zhao MX, Yang Z, Chen W, Tang Y, Ma N, Xu LS, Chen JT. [Effect of skin soft tissue expansion on repair of large area of scars on extremities]. Zhonghua Shao Shang Za Zhi 2019; 35:308-310. [PMID: 31060179 DOI: 10.3760/cma.j.issn.1009-2587.2019.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of skin soft tissue expansion on repair of large area of scars on extremities. Methods: Twenty-five patients with large area of scars on extremities were admitted to our department from June 2007 to October 2014. There were 14 males and 11 females, aged 4 to 36 years. Operations were performed under local infiltration anesthesia or general anesthesia. In the first stage, 1 to 5 cylindrical expanders with capacities of 250 to 600 mL were placed at left or right sides or at upper or lower parts of the scars. In the second stage, scars of 21 patients were repaired with expanded transverse propulsive and lateral flaps, and scars of 4 patients were repaired with expanded perforator flaps whose pedicles were perforators of brachial artery, superior ulnar collateral artery, or posterior interosseous artery according to areas and shapes of the scars. The secondary wound areas ranged from 13 cm×7 cm to 34 cm×18 cm after dissolution or excision of scars. The areas of flaps ranged from 13 cm×7 cm to 20 cm×12 cm. The donor sites were sutured directly. The flaps after operation and follow-up of patients were observed and recorded. Results: All expanded flaps survived after operation. And the superficial distal part of flap whose pedicle was perforator of posterior interosseous artery in one patient was with necrosis, and other flaps survived well. During follow-up of 3 to 15 months after operation of the second stage, color and texture of flaps were similar to surrounding skin, while extremities of donor sites were thinner and auxiliary incisional scars formed after expansion. Conclusions: Expanded flap is a good way to repair large area of scar on extremities. Bilateral skin of scar is the first choice of donor site of expanded flap. If there isn't enough skin for expanding on bilateral sides, expanded perforator flap designed at upper or lower part of the scar is another choice to repair the scar.
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Affiliation(s)
- J Q Peng
- Department of Burns and Plastic Surgery, Meizhou Hospital of Traditional Chinese Medicine, Meizhou 514000, China
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18
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Li X, Guo D, Chu L, Huang Y, Zhang F, Li W, Chen J. Potential Diagnostic Value Of Combining Inflammatory Cell Ratios With Carcinoembryonic Antigen For Colorectal Cancer. Cancer Manag Res 2019; 11:9631-9640. [PMID: 32009818 PMCID: PMC6861168 DOI: 10.2147/cmar.s222756] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/21/2019] [Indexed: 02/05/2023] Open
Abstract
PURPOSE To evaluate the diagnostic value of combining the neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR) or lymphocyte-monocyte ratio (LMR) with carcinoembryonic antigen (CEA) in patients with colorectal cancer (CRC). PATIENTS AND METHODS The diagnostic performance of inflammatory makers and CEA was evaluated in cohort 1 (664 patients with CRC, 336 patients with colorectal polyps and 664 healthy controls) and validated in cohort 2 (87 patients with CRC and 87 healthy controls) by using receiver operating characteristic curve analysis. RESULTS In cohort 1, the NLR, PLR and CEA levels were significantly higher, while the LMR was markedly lower in patients with CRC than in healthy controls. The PLR and LMR were significantly associated with invasion depth and lymph node metastasis. Moreover, significant differences in the PLR and LMR were observed between patients with stage I/II CRC and healthy or polyp controls and those with stage III/IV CRC. Using the NLR, PLR or LMR with CEA resulted in a significantly larger area under the curve (AUC) than any of them used alone. Combining the PLR and LMR with CEA exhibited the best diagnostic value for CRC (AUC=0.892). The AUCs of this combination were 0.864 and 0.783 for distinguishing stage I/II CRC from healthy and polyp controls, respectively. When we used the same cut-off values to assess the diagnostic ability of these markers in cohort 2, similar results were observed, and the PLR, LMR and CEA combination also showed the highest accuracy (AUC=0.936). CONCLUSION Combining inflammatory cell ratios with CEA could improve the diagnostic efficacy for CRC patients. The combination of the PLR and LMR with CEA might be a valuable indicator in the early detection and monitoring of CRC patients.
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Affiliation(s)
- Xinxin Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
| | - Dongming Guo
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
| | - Lingyu Chu
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou, People’s Republic of China
| | - Yiteng Huang
- Department of Health Care Center, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
| | - Feiran Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
| | - Wei Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
| | - Juntian Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
- Correspondence: Juntian Chen Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, 57 Changping Road, Shantou515041, Guangdong Province, People’s Republic of ChinaTel/Fax +86 754 8890 5256 Email
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Wu HC, Chen JT, Fan YH, Yen CH, Chen YM, Chang HS. Secondary metabolites from Excoecaria formosana and their anti-hepatocellular carcinoma activity. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- HC Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - JT Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - YH Fan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - CH Yen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Infectious Disease and Cancer Research (CICAR), Kaohsiung Medical University, Kaohsiung, Taiwan
| | - YM Chen
- Center for Infectious Disease and Cancer Research (CICAR), Kaohsiung Medical University, Kaohsiung, Taiwan
| | - HS Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Infectious Disease and Cancer Research (CICAR), Kaohsiung Medical University, Kaohsiung, Taiwan
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Redfern RE, Shermis RB, Chen JT, Kudrolli H. Abstract P4-01-11: Diagnostic performance of supplemental screening with molecular breast imaging in women with dense breast tissue. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p4-01-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: The aim of this study was to retrospectively assess the diagnostic performance of molecular breast imaging (MBI) as a supplementary screening tool for women with dense breast tissue. We had previously reported excellent cancer detection rates and positive predictive values, whereas in this report we present 1-year follow up data and present sensitivity, specificity and negative predictive values. Methods: Molecular Breast Imaging (MBI) was implemented in routine clinical practice at a large, community-based breast imaging center. Women 25 to 90 years of age with dense breasts and negative mammogram results who underwent subsequent screening with 300 MBq (8 mCi) 99mTc-sestamibi MBI were retrospectively analyzed. Outcome measures included sensitivity, specificity, and positive and negative predictive values. Results: In 1,376 women with a complete reference standard, 17 (1.2%) were diagnosed with cancer. MBI detected cancer in 15 subjects such that 2 interval cancers occurred and were considered false negatives. Of those 17 cancers, 1 (5.9%) were ductal carcinoma in situ only, 13 were invasive tumors (76.5%); 1 (5.9%) patient was diagnosed with bilateral disease. Overall sensitivity of MBI in this sample was 88.2% (95% CI 63.6 – 98.5), while specificity was also high at 92.4% (95% CI 90.9 – 93.8). Positive predictive value for recall (PPV1) was 12.7% (95% CI 7.3 – 20.1), while negative predictive value for recall (NPV1) was calculated as 99.8% (95% CI 99.4 – 100.0). Conclusions: When incorporated into a community-based clinical practice environment, MBI demonstrated high sensitivity, specificity and negative predictive value. These results demonstrate the utility of MBI as a supplementary screening tool to mammography for women with dense breasts.
Citation Format: Redfern RE, Shermis RB, Chen JT, Kudrolli H. Diagnostic performance of supplemental screening with molecular breast imaging in women with dense breast tissue [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P4-01-11.
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Affiliation(s)
- RE Redfern
- ProMedica Toledo Hospital, Toledo, OH; Bowling Green State University, Bowling Green, OH; Gamma Medica, Inc, Salem, NH
| | - RB Shermis
- ProMedica Toledo Hospital, Toledo, OH; Bowling Green State University, Bowling Green, OH; Gamma Medica, Inc, Salem, NH
| | - JT Chen
- ProMedica Toledo Hospital, Toledo, OH; Bowling Green State University, Bowling Green, OH; Gamma Medica, Inc, Salem, NH
| | - H Kudrolli
- ProMedica Toledo Hospital, Toledo, OH; Bowling Green State University, Bowling Green, OH; Gamma Medica, Inc, Salem, NH
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Chen JT, Mustafa EM, Vello V, Lim P, Sulaiman NMN, Majid NA, Phang S, Tahir PM, Liew K. Preliminary assessment of Malaysian micro-algae strains for the production of bio jet fuel. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1757-899x/152/1/012042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lee WM, Chen JT. Computation of scattering of a plane wave from multiple prolate spheroids using the collocation multipole method. J Acoust Soc Am 2016; 140:2235. [PMID: 27794351 DOI: 10.1121/1.4963089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The collocation multipole method is presented to solve three-dimensional acoustic scattering problems with multiple prolate spheroids subjected to a plane sound wave. To satisfy the three-dimensional Helmholtz equation in prolate spheroidal coordinates and the radiation condition at infinity, the scattered field is formulated in terms of radial and angular prolate spheroidal wave functions. Instead of using the complicated addition theorem of prolate spheroidal wave functions, the multipole method, the directional derivative, and the collocation technique are combined to solve multiple scattering problems semi-analytically. For the sound-hard or Neumann conditions, the normal derivative of the acoustic pressure with respect to a non-local prolate spheroidal coordinate system is developed without any truncation error for multiply connected domain problems. By truncating the higher order terms of the multipole expansion, a finite linear algebraic system is obtained and the scattered field is determined from the given incident acoustic wave. Once the total field is calculated as the sum of the incident field and the scattered field, the near field acoustic pressure and the far field scattering pattern are determined. Numerical experiments for convergence are performed to provide the guide lines for the proposed method. The proposed results of acoustic scattering by one, two, and three prolate spheroids are compared with those of an available analytical method and the boundary element method to validate the proposed method. Finally, the effects of the eccentricity of a prolate spheroidal scatterer, the separation between scatterers and the incident wave number on the near-field acoustic pressure and the far-field scattering pattern are investigated.
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Affiliation(s)
- W M Lee
- Department of Mechanical Engineering, China University of Science and Technology, Taipei, Taiwan
| | - J T Chen
- Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung, Taiwan
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Abstract
We investigated the differential expression protein profile of giant cell tumors (GCTs), which can be used to monitor the tumor's recurrence and metastasis, to provide preliminary results for further study. We also explored heat-shock protein (HSP) inhibitor that prevents tumors from recurring and migrating. A stable isotope-labeling strategy using isobaric tags for relative and absolute quantitation coupled with two-dimensional liquid chromatography tandem mass spectrometry was used to separate and identify differentially expressed proteins. A total of 467 differentially expressed proteins were identified in GCT tissues. Up to 311 proteins were upregulated, whereas 156 proteins were downregulated in GCT tissues. Three of the differentially expressed HSPs, namely HP90A, HSPB1, and HSPB2, were upregulated. The differentially expressed proteins of GCT tissues will provide a scientific foundation for tumor prognosis, and for further studies exploring HSP inhibitor to prevent tumor recurrence and migration.
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Affiliation(s)
- J T Chen
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
| | - A Younusi
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
| | - L Cao
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
| | - Z Tian
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
| | - Y J Zhou
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
| | - X H Song
- Orthopaedic Department, The First Affiliated Hospital of XinJiang Medical University, Urumqi, China
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Liao EC, Chen JT, Chao ML, Yu SC, Chang CY, Chu WS, Tsai JJ. Nonadverse effects on allergenicity of isopentenyltransferase-transformed broccoli. J Investig Allergol Clin Immunol 2013; 23:112-119. [PMID: 23654078] [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: 06/02/2023] Open
Abstract
BACKGROUND Genetically modified organisms (GMOs) provide modern agriculture with improvements in efficiency and the benefits of enhanced food production; however, the potential impact of GMOs on human health has not yet been clarified. OBJECTIVE To investigate the allergenicity of isopentenyltransferase (ipt)-transformed broccoli compared with non-GM broccoli. METHODS Sera from allergic individuals were used to identify the allergenicity of GM and non-GM broccoli. Immunoglobulin (Ig) binding of different lines of GM and non-GM broccoli was identified using immunoblotting, enzyme-linked immunosorbent assay, and the histamin release assay. RESULTS Positive reactions to broccoli (Brassica Oleracea) were observed in 7.02% of individuals. Specific IgE to broccoli and total IgE fro allergic individuals were well correlated. The different tests performed showed no significant differences in the allergenicity of conventionally raised and GM broccoli, indicating the absence of unexpected effects on allergenicity in ipt-transformed plants. Using Western blot analysis we detected heterogeneous IgE-reactive allergenic components in broccoli-allergic sera, but no significant differences between GM an non-GM broccoli were observed in serum from the same patients. CONCLUSIONS Our study demonstrates that there are no differences between GM (ipt-transformed) broccoli and non-GM broccoli, as determined by specific IgE in sera from broccoli-allergic patients. This indicates that there were no unexpected effects on allergenicity in this GM broccoli.
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Affiliation(s)
- E C Liao
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
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25
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Wan TK, Chen JT, Wang PC. EMG-guided salpingopharyngeus Botox injection for palatal myoclonus. B-ENT 2013; 9:67-69. [PMID: 23641594] [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: 06/02/2023] Open
Abstract
Palatal myoclonus (PM) is a rare neurological disorder characterized by involuntary movements of the soft palate musculature causing objective clicking tinnitus. Two forms are recognized as distinct clinical entities, with poorly understood pathogenesis: essential and symptomatic PM. The intrusive nature of the tinnitus prompts patients to seek medical advice. Conventional medical treatments with anxiolytics, antidepressants, and anticonvulsants have limited efficacy in these patients. In this case report, electromyography-guided injection of botulinum toxin type A (Botox; Allergan, Irvine, CA, USA) to the involved salpingopharyngeus and tensor veli palatini yielded satisfactory results with minimal temporary adverse effects.
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Affiliation(s)
- T K Wan
- Department of Otolaryngology, Head and Neck Surgery, Cathay General Hospital, Taipei, Taiwan
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26
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Cai C, Li W, Chen J, Li X, Chen S. Diamine oxidase as a marker for diagnosis of superior mesenteric arterial occlusion. Hepatogastroenterology 2012; 59:155-8. [PMID: 22024144 DOI: 10.5754/hge11226] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND/AIMS We investigated changes in serum diamine oxidase (DAO) activity during superior mesenteric arterial occlusion. We aimed to evaluate its value in the early diagnosis of superior mesenteric arterial occlusion. METHODOLOGY Seventy mature male Sprague-Dawley rats were used in the study. These were divided into 7 groups of 10 rats each: 10min, 15min, 30min, 45min, 60min and 90min superior mesenteric arterial occlusion (SMA-O) groups, and a sham group. Blood samples were taken at the indicated time points for measuring serum DAO activity. Simultaneously, the small-intestinal segments were assessed histologically and graded according to Chiu's score. RESULTS In the 15min group, SMA-O resulted in a rapid increase in DAO activity. Serum DAO activity and the mucosal injury score fitted well with the cubic model (r2=0.985, p<0.01). There was a positive correlation between ischemic duration and small-intestinal mucosal injury (r=0.909, p<0.01). Taking DAO=29.81U/L as a early diagnostic standard for superior mesenteric arterial occlusion, the sensitivity, accuracy and specificity were 94.34% (50/53), 95.71% (67/70), 100% (17/17), respectively. CONCLUSIONS Serum DAO activity is a sensitive predictor of small-intestinal injury. Our finding suggests that measurement of serum DAO levels might provide a marker for early diagnosis of superior mesenteric arterial occlusion.
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Affiliation(s)
- Changmao Cai
- Department of Gastrointestinal Surgery, Shantou University Medical College, Shantou, China
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27
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Li KG, Chen JT, Bai SS, Wen X, Song SY, Yu Q, Li J, Wang YQ. Intracellular oxidative stress and cadmium ions release induce cytotoxicity of unmodified cadmium sulfide quantum dots. Toxicol In Vitro 2009; 23:1007-13. [PMID: 19540911 DOI: 10.1016/j.tiv.2009.06.020] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Revised: 05/22/2009] [Accepted: 06/16/2009] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To fully understand the cytotoxicity of after-degradation QDs, we synthesized CdS QDs and investigated its toxicity mechanism. METHODS Biomimetic method was proposed to synthesize cadmium sulfide (CdS) QDs. Thereafter MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide) assay was conducted to evaluate their cytotoxicity. To investigate the toxicity mechanism, we subsequently conducted intracellular reactive oxygen species (ROS) measurement with DCFH-DA, glutathione (GSH) measurement with DTNB, and cellular cadmium assay using atomic absorption spectrometer. Microsized CdS were simultaneously tested as a comparison. RESULTS MTT assay results indicated that CdS QDs are more toxic than microsized CdS especially at concentrations below 40 microg/ml. While microsized CdS did not trigger ROS elevation, CdS QDs increase ROS by 20-30% over control levels. However, they both deplete cellular GSH significantly at the medium concentration of 20 microg/ml. In the presence of NAC, cells are partially protected from CdS QDs, but not from microsized particles. Additionally, nearly 20% of cadmium was released from CdS nanoparticles within 24h, which also accounts for QDs' toxicity. CONCLUSION Intracellular ROS production, GSH depletion, and cadmium ions (Cd(2+)) release are possible mechanisms for CdS QDs' cytotoxicity. We also suggested that with QD concentration increasing, the principal toxicity mechanism changes from intracellular oxidative stress to Cd(2+) release.
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Affiliation(s)
- K G Li
- College of Environmental Science and Engineering, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300071, PR China
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Yan D, Cheng S, Zhuo RF, Chen JT, Feng JJ, Feng HT, Li HJ, Wu ZG, Wang J, Yan PX. Nanoparticles and 3D sponge-like porous networks of manganese oxides and their microwave absorption properties. Nanotechnology 2009; 20:105706. [PMID: 19417534 DOI: 10.1088/0957-4484/20/10/105706] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Hydrohausmannite nanoparticles (approximately 10 nm) were prepared by the hydrothermal method at 100 degrees C for 72 h. Subsequent annealing was done in air at 400 degrees C and 800 degrees C for 10 h, Mn(3)O(4) nanoparticles (approximately 25 nm) and 3D Mn(2)O(3) porous networks were obtained, respectively. The products were characterized by XRD, TEM, SAED and FESEM. Time-dependent experiments were carried out to exhibit the formation process of the Mn(2)O(3) networks. Their microwave absorption properties were investigated by mixing the product and paraffin wax with 50 vol%. The Mn(3)O(4) nanoparticles possess excellent microwave absorbing properties with the minimum reflection loss of -27.1 dB at 3.1 GHz. In contrast, the Mn(2)O(3) networks show the weakest absorption of all samples. The absorption becomes weaker with the annealing time increasing at 800 degrees C. The attenuation of microwave can be attributed to dielectric loss and their absorption mechanism was discussed in detail.
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Affiliation(s)
- D Yan
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
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29
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Chen JT, Hsiao CL, Hsu HC, Wu CT, Yeh CL, Wei PC, Chen LC, Chen KH. Epitaxial Growth of InN Films by Molecular-Beam Epitaxy Using Hydrazoic Acid (HN3) as an Efficient Nitrogen Source. J Phys Chem A 2007; 111:6755-9. [PMID: 17500542 DOI: 10.1021/jp068949g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [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
Epitaxial InN films have been successfully grown on c-plane GaN template by gas-source molecular-beam epitaxy with hydrazoic acid (HN3) as an efficient nitrogen source. Results in residual-gas analyzer show that the HN3 is highly dissociated to produce nitrogen radicals and can be controlled in the amounts of active nitrogen species by tuning HN3 pressure. A flat and high-purity InN epifilm has been realized at the temperature near 550 degrees C, and a growth rate of 200 nm/hr is also achieved. Moreover, the epitaxial relationship of the InN(002) on the GaN(002) is reflected in the X-ray diffraction, and the full-width at half-maximum of the InN(002) peak as narrow as 0.05 degrees is related to a high-quality crystallinity. An infrared photoluminescence (PL) emission peak at 0.705 eV and the integrated intensity increasing linearly with excitation power suggest that the observed PL can be attributed to a free-to-bound recombination.
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Affiliation(s)
- J T Chen
- Graduate Institute in Electro-Optical Engineering, Tatung University, Taipei 104, Taiwan
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Chen JT, Kuhlmann T, Jansen GH, Collins DL, Atkins HL, Freedman MS, O'Connor PW, Arnold DL. Voxel-based analysis of the evolution of magnetization transfer ratio to quantify remyelination and demyelination with histopathological validation in a multiple sclerosis lesion. Neuroimage 2007; 36:1152-8. [PMID: 17543541 DOI: 10.1016/j.neuroimage.2007.03.073] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Revised: 03/14/2007] [Accepted: 03/15/2007] [Indexed: 10/23/2022] Open
Abstract
We present a new method for advanced image processing to separately quantify significant decreases and increases in the magnetization transfer ratio (MTR) of individual voxels of MS lesions as markers of demyelination and remyelination. We used this method to analyze the evolution of MTR in individual voxels of an acute, Gadolinium (Gd)-enhancing lesion that was available for pathology. Over 6.5 months following enhancement, MTR was low and stable in the lesion center (81% of the initially Gd-enhancing lesion volume (GdLV)) and MTR increased at the lesion border with normal-appearing white matter (14%GdLV). The estimated error of these measurements was less than 1.8%GdLV based on scan/rescan analysis. Histopathological analysis confirmed a demyelinated lesion centre with diffuse presence of macrophages/microglia and marked loss of oligodendrocytes and a partially remyelinated lesion border with diffuse presence of macrophages/microglia and relatively more oligodendrocytes compared to the lesion centre. The correlation of imaging and histopathological findings support the validity and sensitivity of our method of voxel-based MTR image processing for monitoring demyelination and remyelination in vivo.
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Affiliation(s)
- J T Chen
- McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, Montreal, Canada H3A 2B4
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31
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Openshaw H, Atkins HL, Chen JT, de Bittencourt PRM, Griffith LM, Kerr DA, Khoury SA, Muraro PA, Nash RA, Saccardi R. Multiple sclerosis conference synopsis and discussion: cellular therapy for treatment of autoimmune diseases (October 2005). Mult Scler 2007; 12:824-5. [PMID: 17263013 DOI: 10.1177/1352458506070943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
At a conference held in October 2005, participants presented studies on high dose immunosuppression with hematopoietic cell transplant (HCT) for multiple sclerosis (MS), including neuroimmunological and magnetic resonance imaging (MRI) mechanistic approaches, clinical registry reports, and ongoing or newly-designed protocols. A discussion panel considered questions on how to define success, timing of controlled clinical trials, difficulty in patient recruitment, and future direction of high dose therapy.
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Affiliation(s)
- H Openshaw
- Department of Neurology, City of Hope National Medical Center, 1500 E. Duarte Road, Duarte, CA 91010, USA.
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Abstract
There were two aims to this study. First, to explore how the reduction in the volume of abnormal T2-signal intensity associated with white matter (WM) lesions in multiple sclerosis (MS) relates to tissue loss resulting from focal pathology inside lesions. Second, to demonstrate that this volume of abnormal T2-signal intensity underestimates the actual size of the region to which the direct effects of lesion activity extend. For these purposes, we used deformation field analysis to quantify the evolution of local atrophy associated with a chronic peri-ventricular lesion in a patient with secondary progressive MS. This subject had particular features that may not necessarily co-exist in a group of unselected patients, which enabled interesting observations to be made. We show, quantitatively, that the focal WM lesion was associated with adjacent regional WM volume loss, which was disproportionate to concurrent diffuse atrophy in the rest of the normal appearing brain tissue, and that the loss of volume associated with the lesion was partially reciprocated by local ventricular expansion. Our observations re-emphasise the complex relationship between the change in the volume of abnormal signal intensity on magnetic resonance images and the tissue volume change directly related to lesion pathology. Multiple Sclerosis 2007; 13: 809-813. http:// msj.sagepub.com
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Affiliation(s)
- I B Kezele
- Department of Biomedical Engineering, McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
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Subramanian SV, Chen JT, Rehkopf DH, Waterman PD, Krieger N. Comparing individual- and area-based socioeconomic measures for the surveillance of health disparities: A multilevel analysis of Massachusetts births, 1989-1991. Am J Epidemiol 2006; 146:92-9. [PMID: 26745732 DOI: 10.1016/j.envres.2015.12.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/07/2015] [Accepted: 12/12/2015] [Indexed: 04/22/2023] Open
Abstract
The absence of individual-level socioeconomic information in most US health surveillance data necessitates using area-based socioeconomic measures (ABSMs) to monitor health inequalities. Using the 1989-1991 birth weight data from Massachusetts, the authors compared estimates of health disparities detected with census tract- and block group-level ABSMs pertaining to poverty and education, as well as parental education, both independently and together. In separate models, adjusted for infant's sex, mother's age, and parents' race/ethnicity, worst-off categories of census tract ABSMs and parental education had a comparable birth weight deficit of approximately 70 g. Similar results were observed for low birth weight (<2,500 g), with worst-off categories of census tract ABSMs and parental education having an odds ratio of approximately 1.37 (p < 0.001). In mutually adjusted models for birth weight and low birth weight, census tract ABSMs still detected an effect estimate nearly 50% of that detected by parental education. Additionally, census tract ABSMs detected socioeconomic gradients in birth weight among births to mothers aged less than 25 years, an age group in which educational attainment is unlikely to be completed. These results suggest that aptly chosen ABSMs can be used to monitor socioeconomic inequalities in health. The risk, if any, in the absence of individual-level socioeconomic information is a conservative estimate of socioeconomic inequalities in health.
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Affiliation(s)
- S V Subramanian
- Department of Society, Human Development, and Health, Harvard School of Public Health, Boston, MA 02115-6096, USA.
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34
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Yan F, Li W, Chen JT, Zeng YM, Guo YW, Zhang FR, Li ZF. [cDNA microarray-based screening of differentially expressed genes in macrophages in the spleen of patients with portal hypertension and hypersplenism]. Nan Fang Yi Ke Da Xue Xue Bao 2006; 26:1548-51. [PMID: 17121696] [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: 05/12/2023]
Abstract
OBJECTIVE To identify the differentially expressed genes associated with hypersplenism in patients with portal hypertension. METHODS The total RNA were extracted from the macrophages isolated from normal spleen and the spleen of patients with portal hypertension and reversely transcribed to cDNA with the incorporation of fluorescent (cy3 and cy5)-labeled dCTP to prepare the hybridization probes. After hybridization of Biostar-H140s chip containing 14,112 spots of cDNAs with the prepared probes, the gene chip was scanned for fluorescence intensity to screen the differently expressed genes. Three gene chips were used for hybridization and only the genes with differential expression in all the three chips were considered to associate with hypersplenism in patients with portal hypertension. RESULTS Totaling 896, 1330 and 898 genes were identified to be differentially expressed by the three chips, respectively, and 121 genes (0.86%) showed differential expression in all the three chips, including 21 up-regulated known genes and 73 down-regulated known genes. The differently expressed genes were functionally related with ion channels and transport proteins, cyclins, cytoskeleton, cell receptors, cell signal transduction, metabolism, immunity, and so forth. These genes might be involved in hypersplenism in the condition of portal hypertension. CONCLUSION cDNA microarray-based screening of differentially expressed genes in the macrophages in the spleen may provide new insights into the pathogenesis of hypersplenism in patients with portal hypertension.
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Affiliation(s)
- Feng Yan
- Postdoctoral Station, Zhongshan Hospital Affiliated to Shantou University, Shantou 361004, China.
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35
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Subramanian SV, Chen JT, Rehkopf DH, Waterman PD, Krieger N. Comparing individual- and area-based socioeconomic measures for the surveillance of health disparities: A multilevel analysis of Massachusetts births, 1989-1991. Am J Epidemiol 2006; 164:823-34. [PMID: 16968866 DOI: 10.1093/aje/kwj313] [Citation(s) in RCA: 177] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The absence of individual-level socioeconomic information in most US health surveillance data necessitates using area-based socioeconomic measures (ABSMs) to monitor health inequalities. Using the 1989-1991 birth weight data from Massachusetts, the authors compared estimates of health disparities detected with census tract- and block group-level ABSMs pertaining to poverty and education, as well as parental education, both independently and together. In separate models, adjusted for infant's sex, mother's age, and parents' race/ethnicity, worst-off categories of census tract ABSMs and parental education had a comparable birth weight deficit of approximately 70 g. Similar results were observed for low birth weight (<2,500 g), with worst-off categories of census tract ABSMs and parental education having an odds ratio of approximately 1.37 (p < 0.001). In mutually adjusted models for birth weight and low birth weight, census tract ABSMs still detected an effect estimate nearly 50% of that detected by parental education. Additionally, census tract ABSMs detected socioeconomic gradients in birth weight among births to mothers aged less than 25 years, an age group in which educational attainment is unlikely to be completed. These results suggest that aptly chosen ABSMs can be used to monitor socioeconomic inequalities in health. The risk, if any, in the absence of individual-level socioeconomic information is a conservative estimate of socioeconomic inequalities in health.
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Affiliation(s)
- S V Subramanian
- Department of Society, Human Development, and Health, Harvard School of Public Health, Boston, MA 02115-6096, USA.
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Abstract
The authors measured brain atrophy in nine patients undergoing immunoablation and autologous hematopoietic stem cell transplantation for multiple sclerosis. From baseline to 1 month after treatment, atrophy was 10 times faster than before treatment. A patient with non-CNS lymphoma showed comparable acute brain atrophy after analogous therapy. These observations suggest that brain atrophy after immunoablation may not be due entirely to the resolution of edema but may be related to chemotoxicity.
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Affiliation(s)
- J T Chen
- McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada
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Chen JT, Rehkopf DH, Waterman PD, Subramanian SV, Coull BA, Cohen B, Ostrem M, Krieger N. Mapping and Measuring Social Disparities in Premature Mortality: The Impact of Census Tract Poverty within and Across Boston Neighborhoods, 1999–2001. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s139-b] [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: 11/13/2022] Open
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Li XM, Gu Y, She JQ, Zhu DM, Niu ZD, Wang M, Chen JT, Sun LG, Ruan DY. Lead inhibited N-methyl-D-aspartate receptor-independent long-term potentiation involved ryanodine-sensitive calcium stores in rat hippocampal area CA1. Neuroscience 2006; 139:463-73. [PMID: 16457957 DOI: 10.1016/j.neuroscience.2005.12.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2005] [Revised: 11/08/2005] [Accepted: 12/12/2005] [Indexed: 11/21/2022]
Abstract
Lead exposure is known to be associated with cognitive dysfunction in children. Impairment of the induction of long-term potentiation (LTP) has been reported in area CA1 of rat hippocampus following lead exposure in vivo and in vitro. The present study was carried out to investigate whether the alterations of N-methyl-d-aspartate (NMDA) receptor-independent LTP following lead exposure involve internal calcium stores in hippocampus CA1 synapses. Monosynaptic field excitatory postsynaptic potentials in hippocampal slice area CA1 were recorded using the whole-cell patch-clamp upon acute lead treatment, and these studies were coupled with calcium imaging experiments to observe internal calcium changes in cultured hippocampal neurons. Inhibiting calcium release by ryanodine significantly reduced NMDA receptor-independent LTP, and depletion of internal calcium stores with thapsigargin blocked this form of LTP. Caffeine, an agonist of ryanodine receptors, enhanced this form of LTP. However, caffeine-enhanced NMDA receptor-independent LTP was depressed after bath application of lead. Moreover, lead further decreased ryanodine- and thapsigargin-reduced NMDA receptor-independent LTP. Calcium imaging also confirmed that lead had an effect on internal calcium release and uptake. Taken together, these results demonstrated that lead inhibited NMDA receptor-independent LTP by action on calcium release and uptake by ryanodine-sensitive stores in rat hippocampal area CA1.
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Affiliation(s)
- X M Li
- School of Life Sciences and Institute of Polar Environment, University of Science and Technology of China, Hefei, Anhui 230027, PR China
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Li W, Li XX, Chen WF, Chen JT, Zeng YM, Guo YW, Chen SL. [Microscopic autofluorescence study of cardiac cancer and normal gastric tissues]. Zhonghua Wei Chang Wai Ke Za Zhi 2005; 8:432-5. [PMID: 16224661 DOI: pmid/16224661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the microscopic autofluorescent characteristics of cardiac cancer and autofluorescence distribution in different layers of gastric tissues. METHODS A double-channel laser scanning confocal microscopy with Argon ion laser (excitation wavelength 488 nm) and Helium-Neon laser (excitation wavelength 543 nm) were used to detect the autofluorescence emitted from 16 surgical specimens of cardiac cancer and corresponding normal gastric tissue. The autofluorescence image was analyzed between the cardiac cancer tissue and normal gastric tissue. RESULTS Autofluorescence was detected successfully in cardiac carcinoma and corresponding normal gastric corpus tissues of all 16 cases. In different layers of gastric tissue, fluorescence presented the strongest signal in submucosa,the second strong in luminal propria with fluorescence mostly distributed in the glands, fluorescence signal from gastric cancer was significantly decreased compared with those in the different layers of normal tissues (P< 0.01). CONCLUSION There are significant differences in the shape, color, distribution and fluorescence intensity of microscopic autofluorescence between cardiac cancer tissues and normal gastric corpus tissues.
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Affiliation(s)
- Wei Li
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, China.
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40
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Chen JT, Collins DL, Freedman MS, Atkins HL, Arnold DL. Local magnetization transfer ratio signal inhomogeneity is related to subsequent change in MTR in lesions and normal-appearing white-matter of multiple sclerosis patients. Neuroimage 2005; 25:1272-8. [PMID: 15850745 DOI: 10.1016/j.neuroimage.2004.12.046] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2004] [Revised: 12/16/2004] [Accepted: 12/17/2004] [Indexed: 11/20/2022] Open
Abstract
Multiple sclerosis (MS) lesions show differing degrees of demyelination and remyelination. Changes in myelin content are associated with changes in magnetization transfer on MRI. Since acute inflammation and demyelination are spatially and temporally inhomogeneous, we hypothesized that local magnetic transfer ratio (MTR) heterogeneity might be predictive of subsequent changes in MTR. To test this hypothesis, we analyzed MTR images obtained in 14 subjects, at baseline and after 2 months follow-up. We segmented lesions and normal-appearing white-matter (NAWM), calculated MTR signal inhomogeneity maps at baseline and MTR lesion difference maps between baseline and follow-up. We found that regions with low MTR inhomogeneity at baseline experienced little further change in MTR on follow-up. The mean change in lesion MTR between baseline and follow-up was 0.10 +/- 3.70; in NAWM it was -0.09 +/- 2.02. We found that regions with high MTR inhomogeneity at baseline would change MTR on follow-up: (1) voxels with significantly high MTR in regions of high MTR inhomogeneity at baseline showed a mean decrease in MTR between baseline and follow-up of -2.51 +/- 4.68 in lesions and -1.41 +/- 3.00 in NAWM; (2) voxels with low MTR in regions of high MTR inhomogeneity at baseline showed a mean increase in MTR between baseline and follow-up of 2.61 +/- 6.07 in lesions. These changes in MTR were significantly different (P < 0.001). These results suggest that calculation of MTR signal inhomogeneity may provide a method for quantifying the potential for remyelination and demyelination, and thus could provide an important MRI biomarker for assessing the efficacy of therapies targeting remyelination.
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Affiliation(s)
- J T Chen
- McConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada H3A 2B4
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41
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Peracchia C, Chen JT, Peracchia LL. CO(2) sensitivity of voltage gating and gating polarity of gapjunction channels--connexin40 and its COOH-terminus-truncated mutant. J Membr Biol 2005; 200:105-13. [PMID: 15520908 DOI: 10.1007/s00232-004-0697-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2004] [Revised: 06/23/2004] [Indexed: 10/26/2022]
Abstract
The CO(2) sensitivity of transjunctional voltage ( V(j)) gating was studied by dual voltage clamp in oocytes expressing mouse Cx40 or its COOH terminus (CT)-truncated mutant (Cx40-TR). V(j) sensitivity, determined by a standard V(j) protocol (20 mV V(j) steps, 120 mV maximal), decreased significantly with exposure to 30% CO(2). The Boltzmann values of control versus CO(2)-treated oocytes were: V(0) = 36.3 and 48.7 mV, n = 5.4 and 3.7, and G(j min) = 0.21 and 0.31, respectively. CO(2) also affected the kinetics of V(j)-dependent inactivation of junctional current ( I(j)); the time constants of two-term exponential I(j) decay, measured at V(j) = 60 mV, increased significantly with CO(2) application. Similar results were obtained with Cx40-TR, suggesting that CT does not play a role in this phenomenon. The sensitivity of Cx40 channels to 100% CO(2) was also unaffected by CT truncation. There is evidence that CO(2) decreases the V(j) sensitivity of Cx26, Cx50 and Cx37 as well, whereas it increases that of Cx45 and Cx32 channels. Since Cx40, Cx26, Cx50 and Cx37 gate at the positive side of V(j), whereas Cx45 and Cx32 gate at negative V(j), it is likely that V(j) behavior with respect to CO(2)-induced acidification varies depending on gating polarity, possibly involving the function of the postulated V(j) sensor (NH(2)-terminus).
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Affiliation(s)
- C Peracchia
- Department of Pharmacology and Physiology, University of Rochester School of Medicine, 601 Elmwood Ave., Rochester, NY 14642-8711, USA.
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Chen JT, Narayanan S, Collins DL, Smith SM, Matthews PM, Arnold DL. Relating neocortical pathology to disability progression in multiple sclerosis using MRI. Neuroimage 2005; 23:1168-75. [PMID: 15528116 DOI: 10.1016/j.neuroimage.2004.07.046] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2004] [Revised: 07/08/2004] [Accepted: 07/12/2004] [Indexed: 10/26/2022] Open
Abstract
Cortical grey matter (cGM) develops a substantial burden of pathology in multiple sclerosis (MS). Previous cross-sectional studies have suggested a relationship between measures of cortical atrophy and disability. Our objective was to develop a method for automatically measuring the apparent cGM thickness as well as the integrity of the interface between cGM and subcortical white matter (GM/WM) both globally and regionally on T(1)-weighted MRI, and use this method in a longitudinal investigation of how these measures differed between patients with stable MS and patients with progressing disability. Measurements were made over the whole brain and for anatomically specified cortical regions, both cross-sectionally at baseline and longitudinally on two MRI scans performed on average 1 year apart. We found a higher average rate of apparent loss of cGM thickness across the whole brain in the group that progressed over the interscan interval compared to the group that remained stable (progressing = -3.13 +/- 2.88%/year, stable = 0.06 +/- 2.31%/year, P = 0.002). This difference was detected with regional measures in parietal and precentral cortex. In contrast, change in the GM/WM interface integrity did not show detectable regional differences, although the group of MS patients whose disability progressed showed a significant decrease in GM/WM interface integrity compared to the stable group (P = 0.003). Regional measures of apparent loss of cGM thickness enhance sensitivity to cortical pathological changes. A measure of integrity offers a new index of disease-associated cortical changes at the GM/WM interface. The results suggest that progression of disability in MS is associated with the progression of MRI-detectable cortical pathology.
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Affiliation(s)
- J T Chen
- Montreal Neurological Institute and Hospital, McConnell Brain Imaging Centre, 3801 University, WB 321, Montreal, Quebec, Canada H3A 2B4
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Krieger N, Chen JT, Waterman PD, Soobader MJ, Subramanian SV, Carson R. Choosing area based socioeconomic measures to monitor social inequalities in low birth weight and childhood lead poisoning: The Public Health Disparities Geocoding Project (US). J Epidemiol Community Health 2003; 57:186-99. [PMID: 12594195 PMCID: PMC1732402 DOI: 10.1136/jech.57.3.186] [Citation(s) in RCA: 441] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
STUDY OBJECTIVES : To determine which area based socioeconomic measures can meaningfully be used, at which level of geography, to monitor socioeconomic inequalities in childhood health in the US. DESIGN Cross sectional analysis of birth certificate and childhood lead poisoning registry data, geocoded and linked to diverse area based socioeconomic measures that were generated at three geographical levels: census tract, block group, and ZIP code. SETTING Two US states: Massachusetts (1990 population=6,016,425) and Rhode Island (1990 population=1,003,464). PARTICIPANTS All births born to mothers ages 15 to 55 years old who were residents of either Massachusetts (1989-1991; n=267,311) or Rhode Island (1987-1993; n=96 138), and all children ages 1 to 5 years residing in Rhode Island who were screened for lead levels between 1994 and 1996 (n=62,514 children, restricted to first test during the study period). MAIN RESULTS Analyses of both the birth weight and lead data indicated that: (a) block group and tract socioeconomic measures performed similarly within and across both states, while ZIP code level measures tended to detect smaller effects; (b) measures pertaining to economic poverty detected stronger gradients than measures of education, occupation, and wealth; (c) results were similar for categories generated by quintiles and by a priori categorical cut off points; and (d) the area based socioeconomic measures yielded estimates of effect equal to or augmenting those detected, respectively, by individual level educational data for birth outcomes and by the area based housing measure recommended by the US government for monitoring childhood lead poisoning. CONCLUSIONS Census tract or block group area based socioeconomic measures of economic deprivation could be meaningfully used in conjunction with US public health surveillance systems to enable or enhance monitoring of social inequalities in health in the United States.
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Affiliation(s)
- N Krieger
- Department of Health and Social Behavior, Harvard School of Public Health, Boston, MA 02115, USA.
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Lin CR, Cheng JT, Lin FC, Chou AK, Lee TC, Chen JT, Yang LC. Effect of thiopental, propofol, and etomidate on vincristine toxicity in PC12 cells. Cell Biol Toxicol 2002; 18:63-70. [PMID: 11991087 DOI: 10.1023/a:1014423330210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/12/2022]
Abstract
Neurotoxicity is the dose-limiting side-effect of vincristine in cancer therapy. Using the nerve growth factor (NGF)-dependent neurite outgrowth and cell proliferation of the PC12 pheochromocytoma cell line as an in vitro assay, the protective effect of different intravenous anesthetics was assessed. Vincristine (1 nmol/L) significantly decreased the percentage of neurite-forming cells from 68% +/- 9% to 27% +/- 7% within a 3-day incubation period. The longer neurites (> 2 x cell body) in particular proved to be extremely sensitive to vincristine (from 17% +/- 4% to 0% of total neurite-expressing cells). Flow cytometry results revealed an S-phase percentage of 15.85% +/- 3.25% after NGF induction, with vincristine reducing this percentage to 0.68% +/- 0.38%. Reversal of the inhibitory effect of vincristine was noted in the cells treated with thiopental or propofol but not etomidate. Bicuculline partially antagonized the protective effect of thiopental and propofol in both studies. We conclude that thiopental and propofol, but not etomidate, have a protective effect in vincristine-induced neurotoxicity. The protective effect produced by thiopental and propofol is probably secondary to activation of GABAA receptors.
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Affiliation(s)
- C R Lin
- Anesthesiology Research Laboratory, Kaohsiung Chang Gung Memorial Hospital, Taiwan, Niao-Shung Hsiang
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Hsia JY, Chen CY, Hsu CP, Shai SE, Yang SS, Chuang CY, Wang PY, Chen JT. Expression of apoptosis-regulating proteins p53, Bcl-2, and Bax in primary resected esophageal squamous cell carcinoma. Neoplasma 2002; 48:483-8. [PMID: 11949842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Apoptosis plays a key role in the pathogenesis, aggressiveness, and therapy responsiveness of cancer. Proteins of the Bcl-2 family as well as p53 are important regulators of apoptosis. The present study retrospectively examines the expression of apoptosis-regulating proteins in primary resected esophageal squamous cell carcinoma (ESCC) and the correlation between the outcome of patients' treatment and the expression of the proteins. We used antibodies specific for the human p53, Bcl-2 and Bax proteins to examine the expression of these apoptosis-regulating proteins in 40 archival specimens of patients with primary resected esophageal squamous cell carcinoma. The overall expression of p53, Bcl-2, and Bax was 73%, 18%, and 100%, respectively. No significant correlations were found between the expression of p53, Bcl-2, and Bax. The expression of Bcl-2 had a negative influence on survival in this population of primary resected ESCC patients (p=0.03). But no differences in survival were observed in relation to the expression of p53 or Bax. In conclusion, Bcl-2 expression may provide additional and prognostic information for the clinical course of the disease and therefore to be developed as a prognostic indicator for primary resected esophageal squamous cell carcinoma.
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Affiliation(s)
- J Y Hsia
- Department of Surgery, Taichung Veterans General Hospital, Taiwan, ROC.
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Lin TP, Fu LS, Peng HC, Lee T, Chen JT, Chi CS. Intra-abdominal actinomycosis with hepatic pseudotumor and xanthogranulomatous pyelonephritis in a 6-y-old boy. Scand J Infect Dis 2002; 33:551-3. [PMID: 11515770 DOI: 10.1080/00365540110026647] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
We report the case of a 6-y-old boy with actinomycosis, presenting as xanthogranulomatous pyelonephritis (XGP), hepatic pseudotumor and abdominal abscess. Symptoms included intermittent fever, abdominal pain and significant weight loss. Hepatic and renal tumor masses were suspected on sonography and computerized tomography. XGP and actinomycosis were proven by pathology. The patient recovered well with antibiotic alone.
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Affiliation(s)
- T P Lin
- Department of Pediatrics, Veterans General Hospital, Taichung, Taiwan
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Chen JT, Chang MH, Chung LL, Cheng YC. Comment on "Eigenmode analysis of arbitrarily shaped two-dimensional cavities by the method of point matching". J Acoust Soc Am 2002; 111:33-36. [PMID: 11831805 DOI: 10.1121/1.1410966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Yen CC, Chen YJ, Chen JT, Hsia JY, Chen PM, Liu JH, Fan FS, Chiou TJ, Wang WS, Lin CH. Comparative genomic hybridization of esophageal squamous cell carcinoma: correlations between chromosomal aberrations and disease progression/prognosis. Cancer 2001. [PMID: 11753950 DOI: 10.1002/1097-0142(20011201)92:11<2769::aid-cncr10118>3.0.co;2-m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Esophageal carcinoma is a major cause of cancer-related deaths among males in Taiwan. However, to date, the genetic alterations that accompany this lethal disease are not understood. METHODS Chromosomal aberrations of 46 samples of esophageal squamous cell carcinoma (EC-SCC) were analyzed by comparative genomic hybridization (CGH), and their correlations with pathologic staging and prognosis were analyzed statistically. RESULTS In total, 321 gains and 252 losses were found in 46 tumor samples; thus, the average gains and losses per patient were 6.98 and 5.47, respectively. Frequent gain abnormalities were found on chromosome arms 1q, 2q, 3q, 5p, 7p, 7q, 8q, 11q, 12p, 12q, 14q, 17q, 20q, and Xq. Frequent deletions were found on chromosome arms 1p, 3p, 4p, 5q, 8p, 9p, 9q, 11q, 13q, 16p, 17p, 18q, 19p, and 19q. It was found that deletions of 4p and 13q12-q14 and gain of 5p were significantly correlated with pathologic staging. Losses of 8p22-pter and 9p also were found more frequently in patients with advanced disease. Gain of 8q24-qter was seen more frequently in patients with Grade 3 tumors. A univariate analysis found that pathologic staging; gains of 5p and 7q; and deletions of 4p, 9p, and 11q were significant prognostic factors. However, pathologic staging became the only significant factor in a multivariate analysis. CONCLUSIONS CGH not only revealed novel chromosomal aberrations in EC-SCC, but also found possible genotypic changes associated with disease progression. Despite all of the possible associations of chromosomal aberrations with disease progression, the most important prognostic factor for patients with EC-SCC was pathologic staging.
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Affiliation(s)
- C C Yen
- Division of Medical Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, Republic of China
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Cheng SB, Wu CC, Shu KH, Ho WL, Chen JT, Yeh DC, Liu TJ, P'eng FK. Liver resection for hepatocellular carcinoma in patients with end-stage renal failure. J Surg Oncol 2001; 78:241-6; discussion 246-7. [PMID: 11745817 DOI: 10.1002/jso.1160] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 12/28/2022]
Abstract
BACKGROUND AND OBJECTIVES Surgical resection remains the main option for curing hepatocellular carcinoma (HCC). However, liver resection in patients with end-stage renal disease (ESRD) is risky. The aim of this study is to clarify the role of liver resection for treating HCC in patients with ESRD. METHODS A retrospective review was carried out on 468 patients who underwent liver resection for HCC between 1989 and 1999. The clinicopathological characteristics and operative results of 12 patients who had ESRD (ESRD group) were compared with those of the other 456 patients who did not have ESRD (non-ESRD group). In the ESRD group, heparin-free hemodialysis using the periodic saline-rinse method was performed during the perioperative period. RESULTS The ESRD group had lower hemoglobin and a higher serum creatinine levels. Other patient background and tumor pathological characteristics were comparable between the two groups as well. The operative morbidity and mortality between the two groups were also similar. The 5-year disease-free survival rates for ESRD and non-ESRD groups were 35.0 and 34.2% (P = 0.31), respectively, while the 5-year actuarial survival rates were 67.8 and 53.3% (P = 0.54), respectively. CONCLUSION With improving techniques and knowledge of dialysis, liver resection for HCC is justified in selected patients with ESRD.
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Affiliation(s)
- S B Cheng
- Department of Surgery, Internal Medicine (Nephrology Division), Taichung Veterans General Hospital, Chung-Shan Medical College, Taichung, Taiwan
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Ge SY, Ruan DY, Yu K, Chen JT, Wang M, Zhong GS. Effects of Fe(2+) on ion channels: Na(+) channel, delayed rectified and transient outward K(+) channels. Food Chem Toxicol 2001; 39:1271-8. [PMID: 11696401 DOI: 10.1016/s0278-6915(01)00069-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 10/17/2022]
Abstract
The effects of Fe(2+) on the properties of three types of ion channels were studied in acutely dissociated rat hippocampal pyramidal neurons from area CA1 at postnatal ages of 7-14 days using the whole cell patch clamp technique. The results indicated that: (1) in the existence of Fe(2+), the activation voltage threshold of transient outward K(+) currents (I(A)) was decreased. The normalized current-voltage curves of activation were well fitted with a single Boltzmann function, and the V(1/2) was 2.44+/-1.14 mV (n=15) in control, whereas 1.79+/-1.53 (n=15), -2.96+/-0.92 (n=14), -5.11+/-1.31 (n=13), -9.05+/-1.64 mV (n=12) in 1, 10, 100 and 1000 microM Fe(2+), respectively. Differences between two groups were significant (P<0.05, n=12-15), except for that between the control and 1 microM (P>0.05, n=15). (2) Fe(2+) caused a left shift of the current-voltage curves of steady-state inactivation of I(A) in a concentration-dependent manner. The curves were well fitted with a single Boltzmann function with similar slope (P>0.05, n=10-13). The V(1/2) were -70.71+/-1.23 (n=13), -71.14+/-1.37 (n=13), -78.21+/-1.17 (n=11), -84.61+/-1.34 (n=12), and -89.68+/-2.59 mV (n=10) in control, 1, 10, 100 and 1000 microM Fe(2+), respectively. Fe(2+) also shifted the current-voltage curves of Na(+) channel steady-state inactivation to more negative depolarization potentials in parallel, with V(1/2), -67.37+/-1.33 mV (n=12) in control, and -67.52+/-1.28 mV (n=12), -68.24+/-1.61 mV (n=10), -71.58+/-1.45 mV (n=10), -76.65+/-1.76 mV (n=9) in 1, 10, 100 and 1000 microM Fe(2+) solutions, respectively. (3) In Fe(2+) solutions, the recovery from inactivation of I(A) was slowed. (4) With application of different concentrations of Fe(2+), the voltage threshold of activation of delayed rectified outward K(+) currents (I(K)) was decreased, while Fe(2+) showed a little inhibition at more positive depolarization. Briefly, the results demonstrated that Fe(2+) is a dose- and voltage-dependent, reversible modulator of I(A), I(K) and Na(+) channels. The results will be helpful to explain the mechanism of Fe(2+) physiological function and Fe(2+) intoxication in the central nervous system.
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Affiliation(s)
- S Y Ge
- School of Life Science, University of Science and Technology of China, 230027, Hefei Anhui, PR China
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