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Tian J, Wang N, Wang C, Wu DP, Wang CH, Ding XJ, Wang YK. [Hsa_circ_0000392 affects the radiation sensitivity of cervical cancer by targeting the miR-145-5p/CRKL/MAPK pathway]. Zhonghua Zhong Liu Za Zhi 2023; 45:879-891. [PMID: 37875424 DOI: 10.3760/cma.j.cn112152-20201217-01075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To investigate the effect of hsa_circ_0000392 (circ_0000392) on the radiosensitivity of cervical cancer cells and explore its potential mechanism. Methods: Cervical cancer tissues and adjacent normal tissues of 42 patients with cervical cancer who were confirmed pathologically for the first time in Huaihe Hospital of Henan University from 2016 to 2019 were collected. According to the patients' response to radiotherapy, the cancer tissues were divided into radio-sensitive tissues and radio-resistant tissues. The expressions of circ_0000392, miR-145-5p, and CRKL in radiation-sensitive, radiation-resistant cervical cancer tissues and Hela, SiHa cells were detected by reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR) and western blot. SiRNA circ_0000392, miR-145-5p mimic, miR-145-5p inhibitor, pcDNA 3.1-CRKL and its negative control were transfected into HeLa and Siha cells, respectively. After radiation induction, the survival fraction of cells was detected by clone formation assay, apoptosis was detected by flow cytometry, and the expressions of apoptosis-related proteins Bax and Bcl-2 and ERK pathway protein p-ERK1/2 and ERK1/2 were detected by western blot. The targeting relationship between circ_0000392, miR-145-5p and CRKL was verified by dual luciferase reporter gene assay. The effect of circ_0000392 on radiotherapy sensitivity of cervical cancer in vivo was observed in the tumor formation experiment in nude mice. Results: circ_0000392 and CRKL were upregulated in radiation-resistant tissues and cancer cells of cervical cancer, while miR-145-5p was downregulated. The clone formation numbers of Hela and SiHa cells in si-circ_0000392#1+ 6 Gy group were (78.67±10.97) and (71.00±9.54), respectively, which were lower than those in si-Ctrl+ 6 Gy group [(176.00±22.27) and (158.33±17.56), respectively]. The apoptosis rates were (41.55±3.40)% and (31.41±3.29)%, respectively, which were higher than those in si-Ctrl+ 6 Gy group [(15.91±1.37)% and (13.70±1.89)%, P<0.05]. The protein expression of Bax was higher than that of si-Ctrl+ 6 Gy group, and the protein expressions of Bcl2 was lower than those of si-Ctrl+ 6 Gy group. The clone formation numbers of Hela and SiHa cells in si-circ_0000392#1+ miR-145-5p inhibitor+ 6 Gy group were (171.33±25.01) and (137.00±21.66), higher than those in si-circ_0000392#1+ inhibitor NC+ 6 Gy group [(84.67±17.79) vs (71.00±11.00), P<0.05]. The apoptosis rates were (17.41±2.58) % and (15.96±1.25) %, lower than those of si-circ_0000392 #1+ inhibitor NC+ 6 Gy [(40.29±2.92)% and (30.82±2.34)%, respectively, P<0.05]. The expression of Bax protein was lower than that of si-circ_0000392#1+ inhibitor NC+ 6 Gy group, and the expressions of Bcl2 protein were higher than those of si-circ_0000392#1+ inhibitor NC+ 6 Gy group. Circ_0000392 can target miR-145-5p, and CRKL is the downstream target gene of miR-145-5p. The clone formation numbers of Hela and SiHa cells in miR-145-5p mimic+ 6 Gy group were (74.33±10.02) and (66.00±12.17), respectively, which were lower than those of mimic NC+ 6 Gy group [(197.67±17.21) vs (157.67±11.59), respectively, P<0.05]. The apoptosis rates were (45.58±2.16)% and (32.10±3.55)%, higher than those of mimic NC+ 6 Gy group [(15.85±2.45)% and (13.99±1.69)%, respectively, P<0.05]. The expression of Bax protein was higher than that of the mimic NC+ 6 Gy mimic group, and the expression of Bcl2 protein was lower than that of the mimic NC+ 6 Gy group. The clone formation numbers of Hela and SiHa cells in miR-145-5p mimic+ pcDNA-CRKL+ 6 Gy group were (158.00±15.88) and (122.33±13.65), respectively, which were higher than those of miR-145-5p mimic+ pcDNA+ 6 Gy group [(71.33±8.02) vs (65.67±12.22), P<0.05]. The apoptosis rates were (19.50±3.45)% and (17.04±0.94)%, respectively, which were lower than those of miR-145-5p mimic+ pcDNA+ 6 Gy group [(44.33±2.36)% and (32.05±2.76)%, respectively, P<0.05]. The expression of Bax protein was lower than that of miR-145-5p mimic+ pcDNA group+ 6 Gy group, and the expression of Bcl2 protein was higher than that of miR-145-5p mimic+ pcDNA+ 6 Gy group. Sh-circ_0000392 group had smaller tumor volume and decreased tumor weight (P<0.05). The relative mRNA expression levels of circ_0000392, miR-145-5p and CRKL and the relative protein expression levels of CRKL, Bcl-2 and p-ERK1/2 were decreased, while the relative expression level of Bax protein was increased (P<0.05). Conclusion: Circ_0000392 could enhance the radiosensitivity of cervical cancer cells, and its mechanism may be related to the regulation of CRKL/ERK signaling pathway by targeting miR-145-5p, which provides a new reference for enhancing the radiosensitivity of cervical cancer cells.
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Affiliation(s)
- J Tian
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - N Wang
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - C Wang
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - D P Wu
- Department of Radiotherapy, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - C H Wang
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - X J Ding
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
| | - Y K Wang
- Department of Gynecology, Huaihe Hospital of Henan University, Kaifeng 475001, China
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Zhu AD, Zhang CL, Yan X, Fu S, Li DZ, Dong C, Wang YK. [A medium- and long-term comparative observation on volumetric changes of cervical disc herniation after symmetrically or asymmetrically decompression and conservative treatment for cervical spondylotic myelopathy]. Zhonghua Wai Ke Za Zhi 2023; 61:666-674. [PMID: 37400209 DOI: 10.3760/cma.j.cn112139-20221008-00423] [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: 07/05/2023]
Abstract
Objective: To compare the volumetric changes of cervical disc herniation (CDH) after cervical microendoscopic laminoplasty(CMEL),expansive open-door laminoplasty (EOLP) and conservative treatment. Methods: A retrospective study was conducted involving 101 patients with cervical spondylotic myelopathy(CSM),at the Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University from April 2012 to April 2021. The patients included 52 males and 49 females with an age of (54.7±11.8) years(range:25 to 86 years). Among them, 35 patients accepted CMEL treatment,33 patients accepted EOLP treatment,while 33 patients accepted conservative treatment. Volume data of CDH were measured by three-dimensional analysis of the initial and follow-up MRI images. The absorption rate and reprotrusion rate of CDH were calculated. The happening of resorption or reprotrusion was defined when the ratio was greater than 5%. The clinical outcomes and quality of life were evaluated by the Japanese Orthopaedic Association (JOA) score and the neck disability index (NDI).Quantitative data was analyzed by one-way ANOVA with post LSD-t test (multiple comparison) or Kruskal-Wallis test. Categorical data was analyzed by χ2 test. Results: The follow-up time of the CMEL group,EOLP group and the conservative treatment group were (27.6±18.8)months,(21.6±6.9)months and(24.9±16.3)months respectively with no significant difference(P>0.05). Changes of CDH volume in patients:(1) There were 96 CDH of 35 patients in the CMEL group,among which 78 showed absorption. The absorption frequency was 81.3%(78/96) and the absorption rate was ranged 5.9% to 90.9%;9 CDH showed reprotrusion,the reprotrusion frequency was 9.4% (9/96) and the reprotrusion rate was 5.9% to 13.3%;(2) There were 94 CDH of 33 patients in the EOLP group,of which 45 showed absorption. The absorption prevalence was 47.9% (45/94) and the absorption rate was 5.0% to 26.7%;20 CDH showed reprotruded,with the reprotrusion frequency of 21.3% (20/94) and the reprotrusion rate was 5.8% to 28.3%;(3) There were 102 CDH in 33 patients of the conservative group. Among them, 5 showed absorption. The absorption frequency was 4.9% (5/102),and the absorption rate was 7.2% to 14.3%;58 CDH showed reprotruded with the re-protrusion ratio of 56.9% (58/102) and the re-protrusion rate was 5.4% to 174.1%. The absorption ratio and reprotrusion ratio of the CMEL group were statistically different from EOLP group or the conservative group (P<0.01).The absorption ratio and reprotrusion ratio of the EOLP group was different from conservative group (all P<0.01). In terms of clinical outcomes, the excellent/good rate of the JOA score and NDI scores in the CMEL group were different from that of conservative group (all P<0.01) but not from that of the EOLP group(P>0.05). Conclusions: CMEL is an effective method for the treatment of CSM,making CDH easier to resorption compared to the EOLP or conservative treatment,thus making a better decompression effect on the nerves. This study enlightened on a new strategy for the clinical treatment of CSM.
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Affiliation(s)
- A D Zhu
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - C L Zhang
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - X Yan
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - S Fu
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - D Z Li
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - C Dong
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
| | - Y K Wang
- Department of Orthopaedic Surgery,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450000,China
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Li S, Xue K, Dai HM, Wang YK, Shan F, Li ZY, Ji JF. [Effects of laparoscopic hyperthermic intraperitoneal perfusion chemotherapy combined with intraperitoneal and systemic chemotherapy treatment in patients with untreated gastric cancer with peritoneal metastasis]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:442-447. [PMID: 37217352 DOI: 10.3760/cma.j.cn441530-20230302-00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Objective: To investigate the efficacy of laparoscopic hyperthermic intraperitoneal perfusion chemotherapy combined with intraperitoneal and systemic chemotherapy (HIPEC-IP-IV) in the treatment of peritoneal metastases from gastric cancer (GCPM). Methods: This was a descriptive case series study. Indications for HIPEC-IP-IV treatment include: (1) pathologically confirmed gastric or esophagogastric junction adenocarcinoma; (2) age 20-85 years; (3) peritoneal metastases as the sole form of Stage IV disease, confirmed by computed tomography, laparoscopic exploration, ascites or peritoneal lavage fluid cytology; and (4) Eastern Cooperative Oncology Group performance status 0-1. Contraindications include: (1) routine blood tests, liver and renal function, and electrocardiogram showing no contraindications to chemotherapy; (2) no serious cardiopulmonary dysfunction; and (3) no intestinal obstruction or peritoneal adhesions. According to the above criteria, data of patients with GCPM who had undergone laparoscopic exploration and HIPEC from June 2015 to March 2021 in the Peking University Cancer Hospital Gastrointestinal Center were analyzed, after excluding those who had received antitumor medical or surgical treatment. Two weeks after laparoscopic exploration and HIPEC, the patients received intraperitoneal and systemic chemotherapy. They were evaluated every two to four cycles. Surgery was considered if the treatment was effective, as shown by achieving stable disease or a partial or complete response and negative cytology. The primary outcomes were surgical conversion rate, R0 resection rate, and overall survival. Results: Sixty-nine previously untreated patients with GCPM had undergone HIPEC-IP-IV, including 43 men and 26 women; with a median age of 59 (24-83) years. The median PCI was 10 (1-39). Thirteen patients (18.8%) underwent surgery after HIPEC-IP-IV, R0 being achieved in nine of them (13.0%). The median overall survival (OS) was 16.1 months. The median OS of patients with massive or moderate ascites and little or no ascites were 6.6 and 17.9 months, respectively (P<0.001). The median OS of patients who had undergone R0 surgery, non-R0 surgery, and no surgery were 32.8, 8.0, and 14.9 months, respectively (P=0.007). Conclusions: HIPEC-IP-IV is a feasible treatment protocol for GCPM. Patients with massive or moderate ascites have a poor prognosis. Candidates for surgery should be selected carefully from those in whom treatment has been effective and R0 should be aimed for.
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Affiliation(s)
- S Li
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - K Xue
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - H M Dai
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - Y K Wang
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - F Shan
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - Z Y Li
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
| | - J F Ji
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
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Wang YK, Huang C. [Establishment and clinical practice of the global diagnostic and theraputic concept of dental esthetic restoration]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:393-397. [PMID: 37082840 DOI: 10.3760/cma.j.cn112144-20230213-00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Dental esthetic restoration covers from facial esthetics to dental esthetics, from the realization of macroscopic to microscopic esthetic restoration goals. As an esthetic restorative dentist, he has to face and solve the increasingly high diagnosis and treatment needs of patients, the increasingly standardized needs of the dental industry, and the need for oral health to become an important part of the Healthy China strategy. Dentists engaged in esthetic restoration field should establish a concept and practice system of global esthetic restoration centered on esthetic diagnosis, interdisciplinary esthetic restoration as a means, and characterized by fine microscopic restoration. Dental esthetic restoration dentists should be the designer of esthetic restoration plans and treatment plans, as well as the implementers of the final esthetic effect. Dentists should accurately grasp the global diagnosis concept and practice system of esthetic restoration, and provide standardized and high-quality oral diagnosis and treatment services for more patients.
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Affiliation(s)
- Y K Wang
- Department of Prosthodontic, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - C Huang
- Department of Prosthodontic, School of Stomatology, Wuhan University, Wuhan 430079, China
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Wen PF, Hao LJ, Wang J, Wang YK, Wang T, Song W, Zhang YM, Qin SQ, Ma T. [Comparative study of gap balancing and measured resection technique in patients receiving staged bilateral total knee arthroplasty]. Zhonghua Yi Xue Za Zhi 2022; 102:2926-2932. [PMID: 36207867 DOI: 10.3760/cma.j.cn112137-20220529-01183] [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: 06/16/2023]
Abstract
Objective: To compare the clinical outcomes of staged total knee arthroplasty (TKA) performed on both knees in the same patient using gap balancing (GB) and measured resection (MR) techniques, respectively. Methods: The clinical data of 57 patients undergoing bilateral staged TKA at the Xi'an Jiaotong University Affiliated Honghui Hospital from July 2018 to January 2020 were analyzed. Using the random number table, MR or GB technique was selected when patients underwent primary TKA, and contralateral procedure was done with another technique. The procedures were performed by one chief surgeon, and the same prosthesis was chosen for all the procedures. The two osteotomy techniques for TKA were compared in terms of surgical status, radiographic data, functional recovery and satisfaction rate. Results: Total of 57 patients, including 16 males and 41 females, were included in the study with a mean age of (68.5±4.6) years (59-79 years) at primary TKA. All patients were followed up for (29.6±4.5) months (22-39 months). The interval between the two procedures was (4.7±3.0) months (0.5-12.0 months). Postoperative drainage was less in the GB side when compared with that in the MR side [(93.6±22.2) ml vs (109.9±36.9) ml, P=0.003]. At the 1-month postoperative follow-up, the visual analogue scale (VAS) of pain was lower on the GB side (3.0±0.8) than on the MR side (3.5±1.2), the range of motion (ROM) was higher on the GB side (105.7°±8.2° vs 100.2°±7.5°), the Knee Society Score (KSS) was higher on the GB side (78.5±5.4 vs 74.2±6.3), and the Western Ontario and McMaster University (WOMAC) score was lower on the GB side (35.4±5.5 vs 38.0±6.3), there were significant differences in the up-mentioned indexes between the two groups (all P<0.05). However, the repeated-measures analysis of variance indicated that there was no significant difference in VAS score, ROM, KSS score and WOMAC score between the two techniques (all P>0.05). The satisfactory rate of GB technique was 84.2%(48/57), ant it was 86.0%(49/57) with MR technique (P=0.446). There was also no significant difference between the two techniques in terms of complications (P=0.754). Conclusion: Both the GB and MR technique result in good knee function with similar clinical outcomes in patients receiving TKA in both knees for osteoarthritis without significant deformity.
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Affiliation(s)
- P F Wen
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - L J Hao
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - J Wang
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - Y K Wang
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - T Wang
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - W Song
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - Y M Zhang
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - S Q Qin
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
| | - T Ma
- Department of Hip Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China
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Dai HM, Wang YK, Ying XJ, Li SX, Shan F, Jia YN, Xue K, Miao RL, Li ZM, Li ZY, Ji JF. [The impact of different comprehensive treatment models on patients with adenocarcinoma of esophagogastric junction based on propensity score matching: a single center cohort study]. Zhonghua Wai Ke Za Zhi 2022; 60:846-852. [PMID: 36058711 DOI: 10.3760/cma.j.cn112139-20220430-00196] [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 compare the prognostic influence and postoperative pathology of different comprehensive treatment models for adenocarcinoma of esophagogastric junction. Methods: Between January 2012 and December 2017, a total of 219 patients with adenocarcinoma of esophagogastric junction underwent surgery in Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute and were enrolled in this study. The clinicopathological data of these patients were collected. The patients were categorized into 3 groups according to different treatment models: surgery-first group, neoadjuvant chemotherapy (NAC) group and neoadjuvant chemoradiotherapy (nCRT) group. A trimatch propensity score analysis was applied to control potential confounders among the three groups by using R language software. A total of 7 covariates including gender, age, comorbidity, body mass index, clinical T stage, clinical N stage and Siewert type were included, and the caliper value was taken as 0.2. After matching, a total of 87 patients were included for analysis with 27 patients for each group. There were 82 males and 5 females, with a median age of 63 years (range: 38 to 76 years). The effect of preoperative treatment on postoperative tumor pathology among the three different comprehensive treatment models was explored by χ2 test, ANOVA or Wilcoxon rank sum test. Mann-Whitney U test or χ2 test were used to undergo pairwise comparisons. Kaplan-Meier method and Log-rank test were used to analyze the overall survival and progression-free survival. Results: The proportion of vascular embolism in the surgery-first group was 72.4% (21/29), which was significantly higher than NAC group (37.9% (11/29), χ2=6.971, P=0.008) and nCRT group (6.9% (2/29), χ2=26.696, P<0.01). The proportions of pathological T3-4 stage in nCRT group and NAC group were 55.2% (16/29) and 62.1% (18/29), respectively, which were significantly lower than the surgery-first group (93.1% (27/29), χ2=10.881, P=0.001; χ2=8.031, P=0.005). Compared with the NAC group (55.2% (16/29), χ2=6.740, P=0.009) and nCRT group (31.0% (9/29), χ2=18.196, P<0.01), the proportion of lymph node positivity 86.2% (25/29) were significantly higher in the surgery-first group. The 5-year overall survival rates were 62.1%, 68.6% and 41.4% for the surgery-first group, NAC group and nCRT group, respectively (χ2=4.976, P=0.083). The 5-year progression-free survival rates were 61.7%, 65.1% and 41.1% for the surgery-first group, NAC group and nCRT group, respectively. The differences in overall survival (χ2=4.976, P=0.083) and progression-free survival (χ2=4.332, P=0.115) among the three groups were nonsignificant. Conclusions: Postoperative pathology is significantly different among the three groups. Neoadjuvant chemotherapy and neoadjuvant chemoradiotherapy could decrease the proportions of vascular embolism, pathological T3-4 stage and lymph node positivity to achieve local tumor control. The prognosis of overall survival and progression-free survival are not significantly different among the three groups.
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Affiliation(s)
- H M Dai
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Y K Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - X J Ying
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - S X Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - F Shan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Y N Jia
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - K Xue
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - R L Miao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Z M Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Z Y Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - J F Ji
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Wang JB, Chen K, He XX, Gong YR, Yang J, Duan X, Wang YK, Yang YC, Ye RH, Jiang Y, Duan S, Xing WW. [Dynamic changes and influencing factors of HIV-1 DNA load in HIV-1 infected individuals under antiretroviral therapy]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:692-695. [PMID: 35589574 DOI: 10.3760/cma.j.cn112338-20211129-00922] [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 analyze the dynamic changes and influencing factors of HIV-1 DNA load in HIV-1 infected individuals under antiretroviral therapy (ART) in Dehong Dai and Jingpo autonomous prefecture, Yunnan province, and provide information support for the clinical use of HIV-1 DNA quantitative detection. Methods: The HIV infection cases in recent infection cohort from Dehong Center for Disease Control and Prevention during 2009-2018 were selected as study subjects. The dynamic curve of HIV-1 DNA load varrying with time was generated and logistic regression analysis was conducted to identify the risk factors for HIV-1 load in the recent follow up after ART and statistical analysis was performed by using SPSS 17.0. Results: Among the 113 HIV infection cases detected from the recent infection cohort, the recent HIV infection rate were 49.6%(56/113) males, sexual transmission cases and drug injection transmission cases accounted for 53.1% (60/113), 80.5% (91/113) and 19.5% (22/113), respectively. The dynamic changes curve showed that HIV-1 DNA load was relatively high (>800 copies /106 PBMCs) before ART, and droped rapidly (<400 copies /106 PBMCs) after ART for 1 year. However, HIV-1 DNA load decreased insignificantly from the second year of ART, and remained to be 269 copies/106 PBMCs after ART for 6 years. Univariable logistic regression analysis indicated that OR (95%CI) of CD8, CD4/CD8 and HIV-1 DNA load were 1.00 (1.00-1.00), 0.30 (0.09-1.05) and 1.01 (1.00-1.01), respectively. Multivariable logistic regression analysis showed that OR value of HIV-1 DNA load base was 1.00 (1.00-1.01). Conclusions: HIV-1 DNA load decreased significantly in the first year of ART, then remained stable for years. HIV-1 DNA load base was the key factor associated with the decrease of HIV-1 DNA load, the lower the HIV-1 DNA load base, the lower HIV-1 DNA load. Therefore, earlier ART can contribute to the decrease of HIV-1 DNA load.
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Affiliation(s)
- J B Wang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - K Chen
- Beijing Sanroad Biological Products Company Limited,Beijing 101407, China
| | - X X He
- Beijing Engineering Technology Research Centre of Gene Sequencing and Gene Function Analysis, Beijing Engineering Research Center of Food Safety Analysis, Beijing Center for Physical & Chemical Analysis, Beijing 100089, China
| | - Y R Gong
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - J Yang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - X Duan
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y C Yang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - R H Ye
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y Jiang
- National HIV/AIDS Reference Laboratory, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S Duan
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - W W Xing
- National HIV/AIDS Reference Laboratory, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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8
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Liu X, Wang W, Tang Y, Wang YK, Luo L, Song L. [Comparison of the long-term outcomes of focused ultrasound ablation surgery for uterine fibroids and myomectomy]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:244-252. [PMID: 35484655 DOI: 10.3760/cma.j.cn112141-20210830-00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To compare the long-term outcomes after focused ultrasound ablation surgery (FUAS) versus myomectomy for uterine fibroids. Methods: A retrospective study was conducted on women who were treated by FUAS or myomectomy for uterine fibroids at First Medical Center of Chinese PLA General Hospital from January 2007 to January 2015. Regular follow-up was conducted to evaluate the symptoms relief, symptoms recurrence, the need for re-interventions and complications of the two groups. Results: The effective rates were 95.7% (730/763) and 95.5% (1 151/1 205) in women who were treated by FUAS and myomectomy, no statistical difference was seen between the two groups (χ²=0.027, P=0.869). The cumulative rates of symptoms recurrence at 1 year, 3 years, 5 years, 8 years and 10 years of follow-up in FUAS group were 1.8%, 6.8%, 11.9%, 15.2% and 15.9%, respectively; and the cumulative re-intervention rates were 0.7%, 4.1%, 6.8%, 9.9% and 11.0%, respectively. The cumulative rates of symptoms recurrence at 1 year, 3 years, 5 years, 8 years and 10 years of follow-up in myomectomy group were 1.8%, 5.9%, 10.6%, 14.2% and 14.9%, respectively; and the cumulative re-intervention rates were 0.9%, 4.5%, 7.8%, 10.3% and 11.4%, respectively. No statistical differences were seen between the two groups (all P>0.05). There were no significant differences in the effective rate, symptoms recurrence rate and re-intervention rate between the two groups in patients with intermural fibroids; but the effective rate of FUAS (95.9%, 235/245) was higher than that of myomectomy (89.1%, 115/129), the symptoms recurrence rate (11.9%, 28/235) was lower than that of myomectomy (27.8%, 32/115), and the re-intervention rate (7.7%, 18/235) was lower than that of myomectomy (17.4%, 20/115) in patients with submucosal fibroids, there were significant different (all P<0.05). The effective rate of FUAS (91.0%, 132/145) was lower than that of myomectomy (97.0%, 322/332), the symptoms recurrence rate (32.6%, 43/132) was higher than that of myomectomy (9.9%, 32/322), and the re-intervention rate (22.0%, 29/132) was higher than that of myomectomy group (6.2%, 20/132) in patients with subserosal fibroids, there were significant different (all P<0.01). The incidences of total [1.8% (14/763) vs 21.9% (264/1 205)], minor and moderate adverse events were lower in FUAS group than myomectomy group (all P<0.001). Conclusion: Satisfaction with long-term outcomes after FUAS treatment or myomectomy for uterine fibroids is comparable.
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Affiliation(s)
- X Liu
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - W Wang
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Tang
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y K Wang
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - L Luo
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Lei Song
- Department of Obstetrics and Gynecology, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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9
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Ma P, Gao S, Zhang HY, Li BY, Zhong HX, Wang YK, Hu HM, Zhang HK, Luo BW, Zhang X, Liu D, Wu L, Gao DJ, Gao SQ, Zhang SZ, Gao SB. Identification and characterization of circRNAs in maize seedlings under deficient nitrogen. Plant Biol (Stuttg) 2021; 23:850-860. [PMID: 33932084 DOI: 10.1111/plb.13280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Here, deep sequencing results of the maize transcriptome in leaves and roots were compared under high-nitrogen (HN) and low-nitrogen (LN) conditions to identify differentially expressed circRNAs (DECs). Circular RNAs (circRNAs) are covalently closed non-coding RNA with widely regulatory potency that has been identified in animals and plants. However, the understanding of circRNAs involved in responsive nitrogen deficiency remains to be elucidated. A total of 24 and 22 DECs were obtained from the leaves and roots, respectively. Ten circRNAs were validated by divergent and convergent primers, and 6 DECs showed the same expression tendency validated by reverse transcriptase-quantitative PCR. Integrating the identified differentially expressed miRNAs, 34 circRNAs could act as miRNA decoys, which might play important roles in multiple biological processes, including organonitrogen compound biosynthesis and regulation of the metabolic process. A total of 51 circRNA-parent genes located in the genome-wide association study identified loci were assessed between HN and LN conditions and were associated with root growth and development. In summary, our results provide valuable information regarding further study of maize circRNAs under nitrogen deficiency and provide new insights into screening of candidate genes as well as the improvement of maize regarding nitrogen deficiency resistance. CircRNA-miRNA-mRNA co-expression networks were constructed to explore the circRNAs that participated in biological development and nitrogen metabolism.
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Affiliation(s)
- P Ma
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Gao
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - H Y Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - B Y Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H X Zhong
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Y K Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H M Hu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H K Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - B W Luo
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - X Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - D Liu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - L Wu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - D J Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Q Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Z Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S B Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
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10
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Wu FP, Wang YK, Li YP, Li M, Jia XL, Zhang X, Dang SS. [Clinical analysis of four cases of HBsAg seroconversion in patients with HBeAg-positive chronic hepatitis B after receiving interferon alpha therapy]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:583-584. [PMID: 34225435 DOI: 10.3760/cma.j.cn501113-20200318-00123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F P Wu
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Y K Wang
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Y P Li
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - M Li
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - X L Jia
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - X Zhang
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - S S Dang
- Department of Infectious Diseases, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
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11
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Gu JY, Zhang Y, Wang X, Xiang JJ, Deng S, Wu DJ, Chen JF, Yu LH, Zhou Y, Wang YK, Shen JP. [Proliferation inhibition effects of matrine on natural killer/T-cell lymphoma cells mediated by c-Myc signaling pathway]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:331-333. [PMID: 32447940 PMCID: PMC7364912 DOI: 10.3760/cma.j.issn.0253-2727.2020.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Y Gu
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China; Key Laboratory of Integrative Chinese and Western Medicine for the Diagnosis and Treatment of Circulatory Diseases of Zhejiang Province, Hangzhou 310006, China
| | - Y Zhang
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - X Wang
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China; Key Laboratory of Integrative Chinese and Western Medicine for the Diagnosis and Treatment of Circulatory Diseases of Zhejiang Province, Hangzhou 310006, China
| | - J J Xiang
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - S Deng
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - D J Wu
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - J F Chen
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - L H Yu
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - Y Zhou
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - Y K Wang
- Shaoxing Second Hospital, Shaoxing 312000, China
| | - J P Shen
- The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou 310006, China
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12
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Wang YK, Wang YC, Shan F, Tang L, Li ZY, Ji JF. [Exploration of potential beneficial people of neoadjuvant chemotherapy based on clinical staging in gastric cancer: a single center retrospective study]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:152-157. [PMID: 32074795 DOI: 10.3760/cma.j.issn.1671-0274.2020.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To evaluate the accuracy of the clinical staging by comparing preoperative clinical stage and pathological stage in gastric cancer patients, and to explore the potential beneficial population of neoadjuvant chemotherapy for gastric cancer. Methods: We retrospectively collected the clinical data of consecutive patients with gastric cancer who met the inclusion criteria (gastric adenocarcinoma, undergoing laparoscopic or open D2 radical operation, definite cTNM and pTNM) for admission of the Gastrointestinal Center of Peking University Cancer Hospital from July 2013 to April 2019. Patients with the number of harvested lymph nodes less than 16, history of gastric operation or preoperative radiochemotherapy were excluded. Preoperative clinical stage was obtained from abdominal and pelvic enhanced CT by radiologists, and postoperative pathological stage was derived from postoperative pathology reports. The concordance rate between preoperative clinical stage and postoperative pathological stage, and the proportion of pathological stage I in patients with specific preoperative clinical TNM stage were analyzed and compared. The potential beneficial population of neoadjuvant chemotherapy were considered as pI < 5%. Relationship between clinical features and concordance rate of stage was further analysed. Results: A total of 459 patients were included in the analysis, including 321 males and 138 females with mean age of 60 (23 to 85) years old. The concordance rate from T1 to T4 between preoperative clinical T staging and postoperative pathological T staging was 82.5% (33/40), 31.1% (28/90), 34.4% (62/180), and 55.0% (96/149), respectively. The concordance rate from N0 to N3 between preoperative clinical N staging and postoperative pathological N staging was 58.8% (134/228), 22.1% (19/86), 23.6% (26/110), and 54.3% (19/35), respectively. The sensitivity and specificity of abdominal enhanced CT in the diagnosis of lymph node metastasis were 64.5% (171/265) and 69.1% (134/194) respectively. The clinical stage of cT3/T4 patients with pathological stage I was 9.1% (30/329), and the sensitivity of corresponding pathological stage III was 94.8% (164/173), while the cT3/4+cN1-3 patients with pathological stage I stage was 1.4% (3/218), and the sensitivity of corresponding pathological phase III was 76.9% (133/173). Tumor location was associated with the concordance of cT/pT staging [gastroesophageal junction: 64 (56.6%), upper stomach: 9 (9/17), middle stomach: 31 (40.3%), lower stomach: 97 (39.9%), whole stomach: 4(4/9), χ(2)=9.845, P=0.043]; the degree of tumor differentiation was associated with the concordance of cN/pN staging [poorly differentiated: 94 (42.3%), moderated differentiated: 92 (41.1%), well differentiated: 12 (12/13), χ(2)=13.261, P=0.001], whose differences were statistically significant (all P<0.05). Conclusion: Based on a single-center retrospective data from Peking University Cancer Hospital, we think that the potential beneficial population of neoadjuvant chemotherapy for gastric cancer are those clinically staged as cT3/4+N1-3.
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Affiliation(s)
- Y K Wang
- Department of Gastrointestinal Cancer Center, Ward I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Caner Hospital & Institute, Beijing 100142, China
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Shi R, Chen Z, Butcher C, Zaman Z, Boyalla V, Wang YK, Riad O, Sathishkumar A, Norman M, Haldar S, Jones DG, Hussain W, Markides V, Wong T. P3756Diverse activation patterns during persistent atrial fibrillation characterised by dipole density non-contact mapping. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0608] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Global simultaneous recording of activation during atrial fibrillation (AF) can elucidate underlying mechanisms contributing to AF maintenance. A better understanding of these mechanisms may allow for a personalised ablation strategy to treat persistent AF.
Purpose
To characterise left atrial endocardial activation patterns during AF using a novel non-contact dipole density mapping.
Methods
Activation patterns were characterised into three sub-types: (i) focal with centrifugal activation (FCA); (ii) localised rotational activation (LRA); (iii) localised irregular activation (LIA). Continuous activation patterns were quantified and distributed in the left atrium.
Results
A total of 144 persistent AF segments with 1068 activation patterns from 25 patients were analysed. The most common pattern was LIA (63%), which consist of four disparate features: slow conduction (45%), pivoting (30%), collision (16%) and acceleration (7%). LRA was the second commonest pattern (20%). FCA (17%) arose frequently from the PVs/ostia. Continuous AF activations comprise multiple combinations of FCA, LRA and LIA, transitioning from one to the next without a discernible order. Preferential conduction areas were typically seen in mid-anterior (48%) and lower-posterior (40%) walls where dominant activations were made up of LRA and LIA.
Conclusion
AF is characterised by heterogenous activation patterns that vary between individuals. Clinical implications of individualised ablation strategies guided by dipole density mapping will have to be determined.
Acknowledgement/Funding
None
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Affiliation(s)
- R Shi
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - Z Chen
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - C Butcher
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - Z Zaman
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - V Boyalla
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - Y K Wang
- University of Auckland, Auckland Bioengineering Institute, Auckland, New Zealand
| | - O Riad
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - A Sathishkumar
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - M Norman
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - S Haldar
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - D G Jones
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - W Hussain
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - V Markides
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
| | - T Wong
- Royal Brompton Hospital, Cardiac Electrophysiology, London, United Kingdom
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14
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Wang YK, Chen XC, Wang JB, Duan X, Zhou SJ, Yang J, Yang T, Ye RH, Yang YC, Yao ST, Duan S, He N. [Molecular transmission clusters on HCV genotypes among newly reported HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture of Yunnan province, 2016]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:191-195. [PMID: 30744271 DOI: 10.3760/cma.j.issn.0254-6450.2019.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the characteristics on major strain subtypes of hepatitis C virus among HIV/HCV co-infected patients, so as to explore the molecular transmission clusters and related risk factors of HCV strains. Methods: A total of 336 newly reported HIV-infected patients were diagnosed as HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture (Dehong) in 2016. We used Nested PCR to amplify CE1 and NS5B genes among 318 samples with plasma levels above 200 μl, before using the combining phylogenetic tree and constructing molecular propagation network method to analyze the related data. Results: A total of 267 HIV/HCV co-infection patients who had met the HCV genotyping requirements were screened the gene subtypes were diversified. Among these genotypes, proportions of 3b, 6n, 6u, 1a, 3a and other subtypes appeared as 32.6% (87/267), 18.4% (49/267), 15.7%(42/267), 13.1%(35/267), 11.2%(30/267) and 9.0%(24/267) respectively. Molecular transmission network of five major HCV genotypes was constructed with a clustering rate of 39.1% (95/243). The clustering rate of subtype 1a was the highest, as 71.4% (25/35). Results from the multivariate logistic regression showed that ethnic minorities other than the Yi and Jingpo (vs. the Han, OR=0.17, 95%CI: 0.04-0.71), the married spouses (vs. the unmarried, OR=0.42, 95%CI: 0.18-0.94), the 6n and 3a subtype (vs. the 3b subtype, OR=0.34, 95%CI: 0.12-0.95; OR=0.22, 95%CI: 0.05-0.93) were more difficult to form transmission clusters. However, the 6u and 1a subtype (vs. the 3b subtype, OR=3.10, 95%CI: 1.21-7.94; OR=4.00, 95%CI: 1.32-12.11) seemed more likely to form the transmission clusters. Conclusion: Ethnicity, marital status and genetic subtypes were factors significantly associated with the formation of transmission clusters related to the major HCV gene subtypes among newly reported HIV/HCV co-infection in Dehong.
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Affiliation(s)
- Y K Wang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - X C Chen
- Department of Epidemiology, School of Public Health, The Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - J B Wang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - X Duan
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S J Zhou
- Department of Epidemiology, School of Public Health, The Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - J Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - T Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - R H Ye
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y C Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S T Yao
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - N He
- Department of Epidemiology, School of Public Health, The Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
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Chen M, Wang JB, Xing H, Ma YL, Yang J, Chen HC, Yao ST, Luo HB, Duan X, Wang YK, Duan S, Jia MH. [HIV-1 drug resistance transmission threshold survey in Dehong prefecture of Yunnan province, 2015]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 38:959-962. [PMID: 28738474 DOI: 10.3760/cma.j.issn.0254-6450.2017.07.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the HIV-1 drug resistance transmission level in HIV infected persons receiving no antiviral therapy in Dehong prefecture of Yunnan province in 2015. Methods: A total of 72 plasma samples were collected from recently reported HIV-infected persons aged 16-25 years in Dehong from January to July 2015 for drug resistance gene detection. Results: Forty eight samples were successfully sequenced and analyzed. Among them, 31.2% (15/48) were from Chinese, and 68.8% (33/48) were from Burmese. Based on pol sequences, HIV genotypes included URF (52.08%, 25/48), CRF01_AE (16.67%, 8/48), RF07_BC (10.42%, 5/48), subtype B (6.25%, 3/48), subtype C (6.25%, 3/48), CRF57_BC (6.25%, 3/48) and CRF08_BC (2.08%, 1/48). One drug resistant mutation site to non-nucleoside analog reverse transcriptase inhibitor (NNRTI) and two drug resistant mutation site to nucleoside analog reverse transcriptase inhibitor (NRTI) were detected in four sequences. Based on the statistical method of HIV drug resistance threshold survey, the prevalence of HIV-1 drug resistant strain was 5%-15%. Conclusions: The proportion of Burmese among newly reported HIV-infected individuals aged 16-25 years in Dehong in 2015 was higher. HIV-1 genetic diversity was found in Dehong. The prevalence of HIV-1 drug resistant strain had reached a moderate level in Dehong.
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Affiliation(s)
- M Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J B Wang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H Xing
- Division of Research on Virology and Immunology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Ma
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J Yang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H C Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - S T Yao
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H B Luo
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Duan
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - M H Jia
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
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Yang YC, Shi RZ, Tang RH, Ye RH, Wang JB, Duan X, Wang YK, Cheng HY, He N, Yao ST, Jiang Y, Duan S. [Estimating HIV incidence among female sex workers and injection drug users in Dehong Prefecture, 2009-2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 52:1243-1247. [PMID: 30522224 DOI: 10.3760/cma.j.issn.0253-9624.2018.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To obtain HIV incidence among injection drug users (IDU) and female sex workers (FSW) in Dehong Prefecture, Yunnan Province during 2009-2017. Methods: We recruited drug users and female sex workers from all sentinel surveillance sites across Dehong Prefecture during 2009-2017. A total of 10 480 IDU and 18 126 FSW in Dehong Prefecture were recruited by fingerprint technique. Data about drug uses, commercial sexual behavior, sociodemographic characteristics was collected by structured questionnaire. HIV-positive patients who were long-term infected or with CD4(+) T cell count was ≤200 were not included for further HIV incidence testing. Also, those who self-identified as on antiretroviral treatment (ART) or AIDS cases were also excluded. A total of 841 and 157 plasma specimens from IDU and FSW that met the inclusion criterion were finally included, respectively. Limiting antigen avidity enzyme immunoassay(LAg-Avidity EIA) were performed to calculate the HIV incidence among these two sub-populations. Results: A total of 3 444 IDU were HIV-positive, among which 884 (25.7%) were Burmese with age of (30.4±7.7), and 2 560 were Chinese with age of (36.6±7.3). Among 228 HIV-positive FSW, 109 (47.8%) were Burmese with age of (27.1±6.3), 119 (52.5%) were Chinese with age of (29.9±11.1). For IDU, the estimated HIV incidence among Burmese in 2009-2010, 2011-2012, 2013-2014, 2015-2017 was 4.20% (95%CI: -0.55%-8.95%), 7.75% (95%CI: 2.95%-12.55%), 11.79% (95%CI: 5.38%-18.20%), 10.30% (95%CI: 5.67%-14.94%), respectively, while Chinese were 3.11% (95%CI: 1.59%-4.64%), 0.03% (95%CI: -0.03%-0.08%), 1.55% (95%CI: 0.54%-2.57%), 0.58% (95%CI: -0.06%-1.04%), respectively. In 2009-2011, 2012-2014, 2015-2017, estimated HIV incidence among Burmese FSW was 0.22% (95%CI: -0.21%-0.64%), 1.24%(95%CI: 0.15%-2.32%), 0.55%(95%CI: 0.01%-1.08%). Whereas, estimated HIV incidence among Chinese FSW was 0.62% (95%CI: 0.25%-0.98%), 0.11% (95%CI: -0.04%-0.26%), 0.22% (95%CI: 0-0.44%). Conclusion: HIV incidences among Chinese IDU and FSW are on the downward trend, while Burmese IDU and FSW seem to be gaining momentum.
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Affiliation(s)
- Y C Yang
- Department of STD/AIDS Prevention and Control, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - R Z Shi
- School of Public Health, Fudan University, Shanghai 200032, China
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Duan X, Wang KR, Wang JB, Ye RH, Wang YK, Yang J, Yang T, Zhou SJ, Yang YC, Yao ST, Duan S, He N. [HIV gene subtypes of newly reported HIV/AIDS cases in Dehong Dai and Jingpo autonomous prefecture of Yunnan province, 2016]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:678-681. [PMID: 29860817 DOI: 10.3760/cma.j.issn.0254-6450.2018.05.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore distribution of HIV gene subtypes among newly reported HIV/AIDS cases from China and Myanmar in Dehong Dai and Jingpo prefecture of Yunnan province in 2016. Methods: We conducted DNA extractions from newly reported HIV/AIDS cases in 2016. The gag, env and pol genes were amplified by using reverse transcription-PCR (RT-PCR) and sequenced to identify HIV subtypes. Results: A total of 1 112 newly diagnosed HIV cases were reported in Dehong in 2016, and the HIV subtypes were identified for 860 cases. Subtype C was predominant (33.6%), followed by unique recombinant forms (URFs) (28.4%), CRF01_AE (18.6%) and so on. URFs include four recombination, among which the recombination of CRF01_AE and C subtype were predominant. The HIV subtype distribution was associated with nationality and transmission route in HIV/AIDS cases from Myanmar. Conclusions: The gene subtypes of C, URFs and CRF01_AE were mainly distributed; distribution of URFs remained complex and diverse among newly reported HIV/AIDS cases in Dehong in 2016.
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Affiliation(s)
- X Duan
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China; Department of Epidemiology, School of Public Health, Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - K R Wang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - J B Wang
- Department of Epidemiology, School of Public Health, Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - R H Ye
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - J Yang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - T Yang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - S J Zhou
- Department of Epidemiology, School of Public Health, Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - Y C Yang
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - S T Yao
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Dehong Dai and Jingpo Autonomous Prefectural Center for Disease Control and Prevention, Mangshi 678400, China
| | - N He
- Department of Epidemiology, School of Public Health, Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
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Chen YL, Zhu ZH, Wang YK, Fan SW, Fang XQ, Wan SL, Zhang JF, Zhao X, Zhao FD. [Effects of oblique lateral interbody fusion and transforaminal lumbar interbody fusion for lordosis correction in degenerative lumbar diseases]. Zhonghua Yi Xue Za Zhi 2018; 98:1990-1995. [PMID: 29996598 DOI: 10.3760/cma.j.issn.0376-2491.2018.25.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the operation time, estimated blood loss, clinical outcome and correction of lumbar lordosis between oblique lateral interbody fusion (OLIF) and transforaminal lumbar interbody fusion (TLIF) in patients with degenerative lumbar diseases. Methods: Seventy-three patients who underwent OLIF or TLIF surgery from January 2016 to December 2017 in Sir Run Run Shaw Hospital Zhejiang University were analyzed in this retrospective case-control study. The patients included 31 males and 42 females, with a mean age of 65.8 years (range, 36-88 years). Of the patients, there were 9 cases of calcified disc herniation, 34 cases of spinal stenosis, 17 cases of degenerative spondylolithesis, 12 cases of degenerative scoliosis and 1 case of isthmic spondylolithesis. According to the type of surgery, patients were divided into OLIF group (34 cases) and TLIF group (39 cases). The operation time, estimated blood loss and transfusion were recorded, pre-and post-operative visual analogue scale (VAS) for back pain and Oswestry Disability Index (ODI) were evaluated, and pre- and post-operative lumbar lordosis (LL) and fused segment lordosis (FSL) were measured. Student t test were used in comparison between groups. Results: Ten (29.4%) patients in OLIF group and all 39 (100%) patients in TLIF group were supplemented with posterior instrumentation (χ(2)=41.013, P<0.05). The average operation time and estimated blood loss was significantly lower in OLIF group than in those in TLIF group[(163±68) vs (233±79) min, (116±148) vs (434±201) ml, t=4.019, 6.964, both P<0.05]. There was no significant differences in decreases value in VAS and ODI after surgery between the two groups (t=1.716, 0.522, both P>0.05). The correction of LL was 4.0°±10.0° in the OLIF group and 4.2°±6.1° in the TLIF group; the correction of FSL was 4.1°±7.0° in the OLIF group and 5.2°±4.6° in the TLIF group, with no significant differences between the two groups too (t=0.139, 0.805, both P>0.05). The correction of LL was significantly higher in OLIF group with posterior instrumentation than that in TLIF group (9.9°±11.1° vs 4.2°±6.1°, t=2.180, P<0.05). Conclusions: Both OLIF and TLIF can restore LL to some extent, but OLIF has obvious advantages in the operation time and blood loss during surgery. When supplemented with posterior instrumentation, OLIF can achieve better correction of LL than TLIF.
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Affiliation(s)
- Y L Chen
- Department of Orthopedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
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Li HR, Liu H, Zhao XY, Pei L, Chen N, Zan WY, Lu HG, Wang YK, Mu YW, Li SD. High-symmetry tubular Ta@B 183-, Ta 2@B 18, and Ta 2@B 27+ as embryos of α-boronanotubes with a transition-metal wire coordinated inside. Phys Chem Chem Phys 2018; 20:25009-25015. [PMID: 30246197 DOI: 10.1039/c8cp04602f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition-metal doping leads to dramatic structural changes and results in novel bonding patterns in small boron clusters. Based on the experimentally derived mono-ring planar C9v Ta©B92- (1) and extensive first-principles theory calculations, we present herein the possibility of high-symmetry double-ring tubular D9d Ta@B183- (2) and C9v Ta2@B18 (3) and triple-ring tubular D9h Ta2@B27+ (4), which may serve as embryos of single-walled metalloboronanotube α-Ta3@B48(3,0) (5) wrapped up from the recently observed most stable free-standing boron α-sheet on a Ag(111) substrate with a transition-metal wire (-Ta-Ta-) coordinated inside. Detailed bonding analyses indicate that, with an effective dz2-dz2 overlap on the Ta-Ta dimer along the C9 molecular axis, both Ta2@B18 (3) and Ta2@B27+ (4) follow the universal bonding pattern of σ + π double delocalization with each Ta center conforming to the 18-electron rule, providing tubular aromaticity to these Ta-doped boron complexes with magnetically induced ring currents. The IR, Raman, and UV-vis spectra of 3 and 4 are computationally simulated to facilitate their future experimental characterization.
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Affiliation(s)
- Hai-Ru Li
- Institute of Molecular Science, Shanxi University, Taiyuan, 034000, China.
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Li K, Zhu ZY, Sun YY, Huang C, Wang YK. [Combined application of alveolar ridge preservation and digital implant guide technique to solve the esthetic problem of anterior teeth: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:561-563. [PMID: 30078272 DOI: 10.3760/cma.j.issn.1002-0098.2018.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- K Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z Y Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Y Y Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - C Huang
- Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Y K Wang
- Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 430079, China
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Wang JB, Chen XC, Duan X, Yang J, Wang YK, Yang T, Ye RH, Yang YC, Yao ST, Jiang Y, Duan S, He N. [Epidemiological characteristics of newly reported HIV infections in Chinese and Burmese residents, during 2012-2016 in Dehong Dai and Jingpo Autonomous Prefecture, Yunnan province]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1372-1375. [PMID: 29060982 DOI: 10.3760/cma.j.issn.0254-6450.2017.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the epidemiological characteristics of newly reported HIV infections in Chinese and Burmese residents during 2012-2016 in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan province (Dehong) and to provide evidence for the development of related programs on prevention and control. Methods: All the HIV infections who were newly reported during 2012-2016 in Dehong, were recruited as the study subjects, with epidemiological characteristics of the cases analyzed by using the software SPSS 22.0. Results: A total of 5 692 HIV infections were newly reported between 2012 and 2016 (including 5 592 in this study), in which the Chinese patients accounted for 43.3% (2 419) and the rest 56.7% (3 173) were Burmese. Differences in age, gender and other social characteristics of these newly reported HIV infections were statistically significant between the Chinese and the Burmese (all p-values <0.05). Most cases were males and between the age of 20-49 years old. Other characteristics of the patients would include: having had primary school education, married, being farmers, and with CD(4)(+)T cells counts ≥350 cells/μl. HIV infection was mainly transmitted through sexual contact among the Chinese patients but through injecting drug use among the Burmese patients. Conclusions: Epidemiological characteristics of the newly reported HIV infections were different between the Chinese and the Burmese, between 2012 and 2016 in Dehong. Targeted prevention and control programs should be taken.
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Affiliation(s)
- J B Wang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - X C Chen
- Department of Epidemiology, School of Public Health, The Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
| | - X Duan
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - J Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - T Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - R H Ye
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y C Yang
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S T Yao
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y Jiang
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S Duan
- Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - N He
- Department of Epidemiology, School of Public Health, The Key Laboratory for Public Health Safety of Ministry of Education, Fudan University, Shanghai 200032, China
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Wang YK, Bi XY, Li ZY, Zhao H, Zhao JJ, Zhou JG, Huang Z, Zhang YF, Li MX, Chen X, Wu XL, Mao R, Hu XH, Hu HJ, Liu JM, Cai JQ. [A new prognostic score system of hepatocellular carcinoma following hepatectomy]. Zhonghua Zhong Liu Za Zhi 2018; 39:903-909. [PMID: 29262506 DOI: 10.3760/cma.j.issn.0253-3766.2017.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Objective: To establish a new scoring system based on the clinicopathological features of hepatocellular carcinoma (HCC) to predict prognosis of patients who received hepatectomy. Methods: A total of 845 HCC patients who underwent hepatectomy from 1999 to 2010 at Cancer Hospital, Chinese Academy of Medical Sciences were retrospectively analyzed. 21 common clinical factors were selected in this analysis. Among these factors, the cut-off values of alpha-fetoprotein (AFP), alkaline phosphatase (ALP) and intraoperative blood loss were evaluated by using a receiver operating characteristic (ROC) curve analysis.The Kaplan-Meier method and Cox regression model were used to evaluate the independent risk factors associated with the prognosis of HCC patients after hepatectomy. HCC postoperatively prognostic scoring system was established according to the minimum weighted method of these independent risk factors, and divided the patients into 3 risk groups, including low-risk, intermediate-risk and high-risk group. The relapse-free survival (RFS) and overall survival (OS) were compared among these groups. Results: The univariate analysis showed that clinical symptoms, preoperative α-fetoprotein (AFP) level, serum alkaline phosphatase (ALP) level, tumor size, tumor number, abdominal lymph node metastasis, macrovascular invasion or tumor thrombus, extrahepatic invasion or serosa perforation, the severity of hepatic cirrhosis, intraoperative blood loss, the liver operative method, pathological tumor thrombus, intraoperative blood transfusion, perioperative blood transfusion were significantly associated with median RFS of these HCC patients (P<0.05). Alternatively, clinical symptoms, preoperative AFP level, serum ALP level, tumor size, tumor number, abdominal lymph node metastasis, macrovascular invasion or tumor thrombus, extrahepatic invasion or serosa perforation, the severity of hepatic cirrhosis, intraoperative blood loss, the liver operative method, pathological lymphocyte invasion, pathological tumor thrombus, intraoperative blood transfusion, perioperative blood transfusion were significantly associated with the median OS of these HCC patients (P<0.05). The multivariate analysis showed that AFP ≥20 ng/ml, clinical symptoms, tumor diameter ≥5 cm, multiple tumors, macrovascular invasion or tumor thrombus, extrahepatic invasion or serosa perforation, moderate and severe liver cirrhosis, non- anatomic resection were the independent risk factors of RFS and OS (P<0.05). The independent risk factor of RFS was intraoperative bleeding loss ≥325 ml (P<0.05); The independent risk factors of OS were abdominal lymph node metastasis and pathological tumors thrombus (P<0.05). The respective weight of 11 independent factors was used to establish the scoring system (scores range from 0 to 26). In the score system, 0 to 5 points were defined as the low-risk group (286 cases), 6 to 12 points were determined as the intermediate-risk group (503 cases), more than 13 points were classified as the high-risk group (56 cases). The median RFS of the low-risk, intermediate-risk and high-risk group were 80, 27 and 6 months, respectively. The differences were statistically significant (P<0.001). The median OS of the three groups were 134, 51 and 15 months, respectively, and the differences were statistically significant (P<0.001). Conclusion: This new score system provides effective prediction of postoperative prognosis for HCC patients.
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Affiliation(s)
- Y K Wang
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X Y Bi
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z Y Li
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Zhao
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J J Zhao
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J G Zhou
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z Huang
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y F Zhang
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - M X Li
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X Chen
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X L Wu
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R Mao
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X H Hu
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H J Hu
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J M Liu
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Q Cai
- Department of Hepatobiliary Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Abstract
AFP-producing gastric cancer(AFPGC) and hepatoid adenocarcinoma of the stomach (HAS) are two special subtypes of gastric cancer. There are both correlation and difference between them. AFPGC is usually identified as primary gastric cancer with serum AFP level more than 20 ng/ml or showed AFP positive staining by immunohistochemistry. The diagnosis of HAS is mainly dependent on the pathological character of hepatocellular carcinoma-like differentiation of gastric cancer. The morbidity of AFPGC and HAS are rather low, especially the incidence of HAS is about 1%. The prognoses of these two subtypes are poorer than that of common gastric adenocarcinoma, due to a high incidence rate of liver metastasis and lymph node metastasis. With the development of next-generation sequencing and other genomic technologies, gastric cancers, including these two rare subtypes, are now being investigated in more detail at the molecular level. Treatment remains the biggest challenge, early diagnosis and radical resection can dramatically improve patients'prognosis. Monitoring serum AFP and abdominal imaging examination during follow-up is important for early detection of liver metastasis. In combination with local treatment methods such as transarterial chemoembolization and radiofrequency ablation of liver may further extend patients'survival time. Targeted therapy owes a great potential value in the future.
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Affiliation(s)
- Y K Wang
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital & Institute, Multidisciplinary Collaboration Group, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing 100142, China
| | - X T Zhang
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital & Institute, Multidisciplinary Collaboration Group, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing 100142, China
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Wang YK, Feng KD, Wang JB, Zhang ZM, Tang RH, Ye RH, Zhang JN, Yang YC, Qiu MF, Duan S. [Comparison of genotypes of hepatitis C virus between Chinese and Burmese drug users living in Dehong Prefecture, Yunnan Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:959-965. [PMID: 27903358 DOI: 10.3760/cma.j.issn.0253-9624.2016.11.008] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the distribution of hepatitis C virus (HCV) genotypes among Chinese and Burmese drug users in Dehong Prefecture, Yunnan Province. Methods: Plasma specimens and relevant epidemiological data were collected from 7 545 drug users attending rehabilitation centers and methadone clinics in Dehong Prefecture from January to September in 2015, of which 752 were positive for HCV antibodies. HCV RNA was then extracted from 139 random specimens (64 Burmese and 75 Chinese) and the CE1 and NS5B regions were amplified by nested PCR. The sequences of these HCV genes were aligned, a phylogenetic tree was constructed using MEGA 6.0.6 and the average genetic discrete rate of each subtype group was calculated. We used Fisher's exact test to compare distribution of HCV subtypes from different people, using analysis of variance to compare the discrete rates of different CE1 and NS5B subtypes. Results: While we successfully amplified RNA from 43 specimens provided by Burmese patients (67%), including 31 with CE1 region and 38 with NS5B region, 52 from Chinese patients (69%) were successfully amplified including 43 with CE1 region and 45 with NS5B region. We found that 3b and 6n were the predominant subtypes and were found in 27% (n=14) and 37% (n=19) of Chinese and 28% (n=12) and 33%(n=14) of Burmese specimens. Subtypes 6u, 3a, 1a and 1b were present in 14%(n=7), 19%(n=10), 2% (n=1) and 2%(n=1) of Chinese specimens and 16%(n=7), 5%(n=2), 16%(n=7) and 2%(n=1) of Burmese specimens respectively. While the prevalence of subtype 1a was higher among samples from Burmese patients than Chinese patients (P=0.015), the presence of subtype 3a was higher among the latter (P=0.031). The discrete rates of CE1 region subtypes 1a, 1b, 3a, 3b, 6n and 6u were 0.048±0.007, 0.091±0.013, 0.074± 0.008, 0.061 ± 0.006, 0.136 ± 0.009 and 0.031 ± 0.005 (F=516.26, P<0.001). The discrete rates for NS5B region subtypes 1a, 1b, 3a, 3b, 6n and 6u, meanwhile, were 0.032±0.006, 0.065±0.012, 0.058±0.008, 0.041± 0.005, 0.059 ± 0.008, 0.045 ± 0.006 (F=45.11, P<0.001). Conclusion: Six HCV subtypes were identified among drug users in Dehong Prefecture, of which 6n and 3b were predominant. There were statistically significant differences in the distribution of subtypes 1a and 3b, which have been circulating for a long time in this population, between samples from Chinese and Burmese participants.
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Affiliation(s)
- Y K Wang
- Department of AIDS/STD Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - K D Feng
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Xiao B, Liu JM, Wang YK, Wu B, Chen XO. [Expression of intercellular adhesion molecule-1 and myeloperoxidase in peripheral blood and its significance in elderly patients with OSAHS]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1269-1272. [PMID: 29798376 DOI: 10.13201/j.issn.1001-1781.2017.16.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the detection and significance of serum intercellular adhesion molecule-1 (ICAM-1) and myeloperoxidase (MPO) in elderly patients with OSAHS in adults.Method:Ninety-three cases of elderly OSAHS patients who confirmed by PSG were observed. According to the range of AHI, they were divided into 3 groups (severe, moderate and mild). 31 cases of healthy person were observed as control group. The serum ICAM-1 and MPO were determined by ELISA method; ICAM-1 and MPO were measured after comprehensive treatment in patients with elderly severe OSAHS, and the correlation between ICAM-1, MPO and PSG were analyzed.Result:①With the severity of snoring increased, the serum levels of ICAM-1 and MPO increased gradually (F=29.937,18.946; P< 0.01); The concentration of ICAM-1 and MPO in each group showed that there was no significant difference between the mild group and the control group (P> 0.05), there were significant differences between the rest each two groups (P< 0.05). ②There was no correlation between serum levels of ICAM-1, MPO, BMI, age in OSAHS patients (P> 0.05). There was a positively relationship between ICAM-1 and MPO . Both of them were negatively correlated with AHI, and positively correlated with LSaO2 (P< 0.01). ③The concentration of ICAM-1, MPO and AHI in 31 elderly patients with severe OSAHS decreased and LSaO₂ increased significantly after 3 months of comprehensive treatment (P< 0.01).Conclusion:The increase of ICAM-1 and MPO concentration in peripheral blood is one of the mechanisms of cardiovascular damage in elderly patients with OSAHS. Determination of peripheral blood ICAM-1, MPO levels in elderly patients with OSAHS to help determine the severity of disease, the evaluation of treatment,which may have a certain reference value for the prediction of cardiovascular disease risk in patients with severe OSAHS.
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Affiliation(s)
- B Xiao
- Department of Otorhinolaryngology Head and Neck Surgery, Deyang People's Hospital, Deyang, 618000, China
| | - J M Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Deyang People's Hospital, Deyang, 618000, China
| | - Y K Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Deyang People's Hospital, Deyang, 618000, China
| | - B Wu
- Department of Otorhinolaryngology Head and Neck Surgery, Deyang People's Hospital, Deyang, 618000, China
| | - X O Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the Eighth Affiliated Hospital, Sun-Yat-Sen University
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Wang YK, Shen L, Zhang XT. [The prognosis and clinicopathological characteristics of 70 gastric cancer patients with elevated serum AFP]. Zhonghua Zhong Liu Za Zhi 2017; 39:514-517. [PMID: 28728297 DOI: 10.3760/cma.j.issn.0253-3766.2017.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study aimed to review the clinicopathological characteristics and prognosis of advanced gastric cancer patients with elevated serum Alpha-fetoprotein (AFP). Methods: From August 2006 to May 2016, 70patients with advanced gastric cancer were enrolled retrospectively. All these patients had pathologically confirmed gastric adenocarcinoma, had a serum AFP level of more than 20 ng/ml, and received at least first-line treatment. The clinicopathological data and follow-up data were collected for analysis. Results: Liver metastasis was more common in patients with AFP≥1 000 ng/ml, compared with AFP<1 000 ng/ml patients (78.6% vs 57.1%, P=0.064). In patients whose AFP level decreased ≥50% after first-line chemotherapy, the disease control rate and overall survival were both better than those in patients with AFP decreased <50%(96.3% vs 56.7%, P=0.001; 17.2 m vs 8.8 m P=0.007). The overall survival of all these 70 patients ranged from 0.5-50.0 months. 31 patients received chemotherapy only, and 39 patients received combined therapy modality. The overall survival of these two groups were similar(11.0 m and 15.6 m, respectively, P=0.070). Conclusions: Serum AFP-elevated gastric cancer is a special subtype of gastric cancer. It's a heterogeneous cancer with different clinical outcomes. The extent of decrease of serum AFP level during follow-up may be a sensitive prognostic and predictive biomarker. Liver metastasis were more common in these patients, and combined treatment may improve survival.
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Affiliation(s)
- Y K Wang
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital &Institute, Multidisciplinary Collaboration Group, Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education), Beijing 100142, China
| | - L Shen
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital &Institute, Multidisciplinary Collaboration Group, Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education), Beijing 100142, China
| | - X T Zhang
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital &Institute, Multidisciplinary Collaboration Group, Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education), Beijing 100142, China
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Zhang JN, Wang YK, Jiang Y, Long YC, Wang JB, Feng KD, Tang RH, Zhang ZM, Duan S, Zhao Q, Zhang GY, Qiu MF. [Tracing hepatitis C virus transmission by using high-throughput sequencing technique]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:530-4. [PMID: 27256734 DOI: 10.3760/cma.j.issn.0253-9624.2016.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE An approach for analysis of hepatitis C virus (HCV) quasispecies using Hiseq high-throughput sequencing (hereinafter referred to as Hiseq sequencing) technique was developed and then applied to investigate a possible case of HCV needle sharing transmission. METHODS One case of HCV antibody seroconversion (P1) was found in a methadone clinic on January 15, 2015. Four HCV antibody positive injecting drug users (IDUs), P2 to P5, suspected to be involved in needle sharing transmission with P1 during the period (after March 24, 2014) that P1 may be infected with HCV were investigated, and another 28 HCV antibody positive IDUs were selected as controls (C1 to C28). These controls came from the same methadone clinic or lived in the same town with P1. The RNAs were extracted from the plasma specimens and then reverse-transcribed into cDNA. After HCV subtyping, Hiseq sequencing was performed to detect and sequence the HCV quasispecies (263 bp) in the specimens with the same subtype as P1. The frequency of quasispecies was counted and ranked. Intrapersonal and interpersonal genetic distance and phylogenetic tree were calculated. RESULTS The HCV subtype of specimen P1 was 3b. All the other specimens with the same subtype were P2, C7, C12, C14, C15, C16, C19, C20 and C28. Hiseq sequencing was successfully performed in 9 out of these 10 specimens, and 249 753 to 1 086 333 (average 869 608) cleaned sequences representing 3 to 172 (average 48) unique HCV quasispecies were obtained. The medians (P50) of intrapersonal genetic diversities from the 9 specimens were 0.4% to 12.3%. The P50 (P25, P75) of genetic diversities between P1 and the other 8 specimens were 19.0% (18.4%, 19.8%), 10.4% (2.8%, 18.3%), 19.6% (17.8%, 21.4%),24.9% (23.8%, 26.1%), 19.8% (18.7%, 20.7%), 20.1% (18.9%, 21.2%), 20.6% (20.0%, 21.1%), 23.6% (22.4%, 24.8%). There were no significant difference between the genetic diversities of P1 and P2 and those of P1 and other 7 specimens (H=9.40, P=0.100). The genetic diversities between few HCV quasispecies from P1 and few ones from C7 were 0. Phylogenetic tree analysis indicated that there was no HCV transmission relationship between P1 and P2, but there was HCV transmission relationship between P1 and C7. CONCLUSION With the feature of high-throughput, easier operation and lower cost, Hiseq sequencing technique has high practical value in tracing HCV transmission at the quasispecies level.
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Affiliation(s)
- J N Zhang
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y K Wang
- Department of AIDS/STD Control and Prevention, Dehong Center for Disease Control and Prevention, Dehong, Yunnan 678400, China
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Li HR, Liu H, Tian XX, Zan WY, Mu YW, Lu HG, Li J, Wang YK, Li SD. Structural transition in metal-centered boron clusters: from tubular molecular rotors Ta@B21and Ta@B22+to cage-like endohedral metalloborospherene Ta@B22−. Phys Chem Chem Phys 2017; 19:27025-27030. [DOI: 10.1039/c7cp05179d] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extensive first-principles theory investigations unveil a tubular-to-cage-like structural transition in metal-centered boron clusters at (±)-D2Ta@B22−, the smallest axially chiral endohedral metalloborospherenes.
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Affiliation(s)
- Hai-Ru Li
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Hui Liu
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Xin-Xin Tian
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Wen-Yan Zan
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Yue-Wen Mu
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Hai-Gang Lu
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Jun Li
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yue-Kui Wang
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
| | - Si-Dian Li
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- China
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Yao ZG, Wang YK, Qin YJ, Zhao MQ, Li X. A rare case of rectal interdigitating dentritic cell sarcoma presenting with a polypoid appearance. Pathology 2016; 48:744-746. [PMID: 27780598 DOI: 10.1016/j.pathol.2016.07.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/09/2016] [Accepted: 07/27/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Z G Yao
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y K Wang
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y J Qin
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.
| | - M Q Zhao
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - X Li
- Medical Care Department of Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
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Abstract
OBJECTIVE To evaluate the prevalence of Helicobacter pylori (H. pylori, HP) infection in subjects receiving routine physical examination and its associations with age, sex, body mass index (BMI) and lipid profiles. MATERIALS AND METHODS Clinical information of 22,103 individuals who took routine physical examinations, including that on age, gender, height, weight, triglyceride, total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol and data of HP infection were collected and analyzed. RESULTS H. pylori infection rate in 22,103 subjects taking routine physical examination was 44.5 %. More men tended to be infected with H. pylori than women (45.9 % vs 42.8 %; p < 0.01). The highest positive rate group was in the age group of 30-39 years (46.8 %) and the lowest rate was in the age group younger than 30 years (40.5 %). The obese had higher infection rate than the non-obese (p < 0.01). Mann-Whitney U test was used to explore the relationships between lipid profiles and H. pylori infection. There were significant associations among HDL, triglyceride and HP infection (p < 0.01). However, significant differences were not confirmed between cholesterol, LDL and H. pylori infection. CONCLUSION H. pylori infection was common among subjects receiving physical examination in Shanghai and it was most significantly associated with HDL and triglyceride, indicating that H. pylori might be a new cardiovascular risk factor (Tab. 3, Ref. 23).
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Chen M, Wang JB, Xing H, Ma YL, Yang J, Chen HC, Yao ST, Luo HB, Duan X, Wang YK, Duan S, Jia MH. [Study on the threshold of HIV-1 drug resistance in Dehong prefecture of Yunnan province in 2014]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:206-9. [PMID: 26917516 DOI: 10.3760/cma.j.issn.0254-6450.2016.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the HIV-1 genotypes and transmitted drug resistance (TDR) in Dehong prefecture of Yunnan province in 2014. METHODS A total of 70 plasma samples of recently reported HIV-infected individuals between 16 and 25 years old were collected in Dehong prefecture from January to August 2014. Among them, 58 samples which met the criterion of HIV drug resistance threshold survey (HIVDR-TS) were subjected to genetic drug resistance detection. RESULTS 50 plasma samples were successfully sequenced and analyzed. Among them, 34.0% were Chinese and 66.0% were Burmese. Based on pol sequences, all the identified HIV genotypes would include CRF01_AE (28.0%), subtype C(20.0%), URF(20.0% ), CRF62_BC(10.0% ), CRF08_BC(8.0% ), CRF07_BC (4.0%), CRF64_BC(4.0%), subtype B(4.0%) and CRF55_01B(2.0%). One drug, which resistant mutation to proteinase inhibitors had been detected in one sequence. Based on the statistical method of HIVDR-TS, the prevalence of transmitted HIV-1 drug resistance was adjusted as <5%. CONCLUSION The proportion of Burmese was relatively higher among those newly reported HIV-infected individuals aged 16 to 25 in Dehong. We noticed that the novel circulating recombinant forms began to function. However, the level of transmission through HIV-1 drug resistant strains still kept low in Dehong.
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Affiliation(s)
- M Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J B Wang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H Xing
- Division of Research on Virology and Immunology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Ma
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J Yang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H C Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - S T Yao
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H B Luo
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Duan
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - M H Jia
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
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Sun CF, Wang SG, Peng YG, Shi Y, Du YP, Shi GX, Wen T, Wang YK, Su H. [Intervention of systolic pressure and left ventricular hypertrophy in rats under cold stress]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:438-43. [PMID: 27514554 DOI: 10.3760/cma.j.issn.1001-9391.2016.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the effects of different drugs on systolic blood pressure (SBP) and left ventricular hypertrophy (LVH) in spontaneously hypertensive rats under cold stress. METHODS A total of 40 male spontaneously hypertensive rats aged 10 weeks (160~200 g) were given adaptive feeding for 7 days at a temperature of 20±1°C and then randomly divided into control group, cold stress group, metoprolol group, amlodipine group, and benazepril group, with 8 rats in each group. SBP, body weight, and heart rate were measured once a week. After the rats were sacrificed by exsanguination, left ventricular weight (LVW) was measured, and left ventricular weight index (LVWI; mg/g) was calculated. Radioimmunoassay was used to measure the concentrations of endothelin-1 (ET-1) and angiotensin-II (Ang-II) in plasma and myocardium, and the chemical method was used to measure the concentrations of nitric oxide (NO) in plasma and myocardium. RT-PCR was used to measure the mRNA expression of endothelin-A receptor. RESULTS Compared with the cold stress group, all medication groups showed significant reductions in SBP since week 5 (P<0.05). The cold stress group showed a significant increase in LVWI compared with the control group (3.38±0.27 mg/g vs 2.89±0.19 mg/g, P<0.05). The amlodipine group showed a significant reduction in LVWI compared with the cold stress group (2.98±0.28 mg/g vs 3.38±0.27 mg/g, P<0.05). The cold stress group showed a significant reduction in plasma NO concentration compared with the control group (104.9±19.5 μmol/L vs 129.3±17.8 μmol/L, P<0.05) ; compared with the cold stress group, all the medication groups showed significant increases in blood NO concentration (P<0.05). The cold stress group showed a significant increase in myocardial ET-1 concentration compared with the control group (6.3±1.5 pg/100 mg vs 4.5±1.9 pg/100 mg, P<0.05) ; compared with the cold stress group, the amlodipine group showed a significant reduction in myocardial ET-1 concentration (4.4±1.0 pg/100 mg vs 6.3±1.5 pg/100 mg, P<0.05). The cold stress group had significantly higher mRNA expression of endothelin-A receptor than the control group (0.86±0.23 vs 0.45±0.16, P<0.01) ; compared with the cold stress group, the amlodipine group showed a significant reduction in the mRNA expression of endothelin-A receptor (0.41±0.14 vs 0.86±0.23, P<0.01). CONCLUSION Amlodipine can reduce the increase in SBP and inhibit LVH in spontaneously hypertensive rats under cold stress.
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Affiliation(s)
- C F Sun
- Department of Emergency Center, Huai'an Hospital Affiliated of Xuzhou Medical College, Huai'an 223002, China
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Fu B, Wang YK, Xu P, Yan K, Li M. Value of ecosystem hydropower service and its impact on the payment for ecosystem services. Sci Total Environ 2014; 472:338-46. [PMID: 24291631 DOI: 10.1016/j.scitotenv.2013.11.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/01/2013] [Accepted: 11/03/2013] [Indexed: 05/04/2023]
Abstract
Hydropower is an important service provided by ecosystems. We surveyed all the hydropower plants in the Zagunao River Basin, Southwest China. Then, we assessed the hydropower service by using the InVEST (The Integrated Value and Tradeoff of Ecosystem Service Tools) model. Finally, we discussed the impact on ecological compensation. The results showed that: 1) hydropower service value of ecosystems in the Zagunao River Basin is 216.29 Euro/hm(2) on the average, of which the high-value area with more than 475.65 Euro/hm(2) is about 750.37 km(2), accounting for 16.12% of the whole watershed, but it provides 53.47% of the whole watershed service value; 2) ecosystem is an ecological reservoir with a great regulation capacity. Dams cannot completely replace the reservoir water conservation function of ecosystems, and has high economic and environmental costs that must be paid as well. Compensation for water conservation services should become an important basis for ecological compensation of hydropower development. 3) In the current PES cases, the standard of compensation is generally low. Cascade development makes the value of upstream ecosystem services become more prominent, reflecting the differential rent value, and the value of ecosystem services should be based on the distribution of differentiated ecological compensation.
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Affiliation(s)
- B Fu
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China.
| | - Y K Wang
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China.
| | - P Xu
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China
| | - K Yan
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China
| | - M Li
- Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China; Chengdu University of Technology, Chengdu 610059, China
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Yang YN, Liu CL, Wang YK, Xue JM. Mutation effects of C2+ ion irradiation on the greasy Nitzschia sp. Mutat Res 2013; 751-752:24-8. [PMID: 24064032 DOI: 10.1016/j.mrfmmm.2013.09.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/10/2013] [Accepted: 09/13/2013] [Indexed: 11/25/2022]
Abstract
Screening and nurturing algae with high productivity, high lipid content and strong stress resistance are very important in algae industry. In order to increase the lipid content, the Nitzschia sp. was irradiated with a 3MeV C(2+) beam. The sample pretreatment method was optimized to obtain the best mutagenic condition and the survival ratio curve. The positive mutants with a significant improvement in lipid content were screened and their C(2+) mutagenic effects were analyzed by comparing the greasiness and growth characteristics with the wild type algae. Results showed that when the Nitzschia sp. was cultivated in nutritious medium containing 10% glycerol solution, and dried on the filter for 5 min after centrifugation, the realization of the microalgae heavy ion mutagenesis could be done. The survival ratio curve caused by C(2+) irradiation was proved to be "saddle-shaped". A positive mutant was screened among 20 survivals after irradiation, the average lipid content of the mutation increased by 9.8% than the wild type after 4 generations. But the growth rate of the screened mutation didn't change after the heavy ion implantation compared to the wild type algae.
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Affiliation(s)
- Y N Yang
- School of Chemistry and Environment, Beihang University, 37th Xueyuan Road, Haidian District, P.O. Box 106, 100191 Beijing, PR China.
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Wang YK, Dong ZG, Zhai Y. Artificial permeability and antibonding magnetic resonance in a copper-structured metamaterial with symmetry-broken ring-plate resonators. J Nanosci Nanotechnol 2012; 12:6521-6525. [PMID: 22962777 DOI: 10.1166/jnn.2012.5436] [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: 06/01/2023]
Abstract
We numerically investigate the antibonding magnetic resonance in a metamaterial composed of rings and plates, with a particular attention to the influence of broken structural symmetry on the Fano-type transmission spectrum as well as the resonant artificial permeability. From the simulation results, it is obvious that the antibonding magnetic resonance with strong magnetic-dipole coupling is responsible for the Fano-type profile, since an increase of the structural asymmetry extent to reduce the magnetic field confinement in one of the gaps will form, in contrary, a Lorentzian resonance dip. The dual excitation pathways, i.e., electric and magnetic resonances, at destructive interference are the underlying reason of the Fano-type transmission response. Additionally, the structural-asymmetry dependence of the artificial permeability shows that the broken symmetry can strongly modify the effective permeability due to the altering magnetic-dipole interactions. It is found that an anti-resonant curve of permeability versus frequency will be resulted in if significant symmetry-broken structure is introduced.
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Affiliation(s)
- Y K Wang
- Department of Physics, Southeast University, Nanjing, 211189, China
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Wang YK, Zhu YL, Qiu FM, Zhang T, Chen ZG, Zheng S, Huang J. Activation of Akt and MAPK pathways enhances the tumorigenicity of CD133+ primary colon cancer cells. Carcinogenesis 2010; 31:1376-80. [PMID: 20530554 DOI: 10.1093/carcin/bgq120] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Cancer stem cells (CSCs) play an important role in carcinogenesis, resistance to treatment and may lead to cancer recurrence and metastasis. However, the molecular mechanism of CSC involved in these events needs to be further elucidated. In this study, CD133(+) colon cancer cells were cultured, which showed CSC properties both in vitro and in vivo from metastatic tissue. Upstream molecules in Akt and mitogen-activated protein kinase (MAPK) pathways were preferentially expressed in these CD133(+) cells, as revealed by a global gene chip. The kinase activities of Akt and extracellular signal-regulated kinase (Erk)1/2 were also significantly upregulated in CD133(+) cells. In addition, the clonogenic growth of CD133(+) cell was reduced greatly by inhibiting the activity of Akt and Erk1/2. The results revealed the Akt and MAPK pathways were involved in the tumorigenesis of CD133(+) colon cancer cells, suggesting that molecules in these two pathways might be potential targets in the future therapy.
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Affiliation(s)
- Y K Wang
- Cancer Institute, Zhejiang University School of Medicine, Hangzhou, China
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Tong XL, Hu TL, Zhao JP, Wang YK, Zhang H, Bu XH. Chiral magnetic metal–organic frameworks of MnII with achiral tetrazolate-based ligands by spontaneous resolution. Chem Commun (Camb) 2010; 46:8543-5. [DOI: 10.1039/c0cc03111a] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Schmid H, Wang YK, Ashton J, Ehret AE, Krittian SBS, Nash MP, Hunter PJ. Myocardial material parameter estimation: a comparison of invariant based orthotropic constitutive equations. Comput Methods Biomech Biomed Engin 2009; 12:283-95. [PMID: 19089682 DOI: 10.1080/10255840802459420] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This study investigated a number of invariant based orthotropic and transversely isotropic constitutive equations for their suitability to fit three-dimensional simple shear mechanics data of passive myocardial tissue. A number of orthotropic laws based on Green strain components and one microstructurally based law have previously been investigated to fit experimental measurements of stress-strain behaviour. Here we extend this investigation to include several recently proposed functional forms, i.e. invariant based orthotropic and transversely isotropic constitutive relations. These laws were compared on the basis of (i) 'goodness of fit': how well they fit a set of six shear deformation tests, (ii) 'variability': how well determined the material parameters are over the range of experiments. These criteria were utilised to discuss the advantages and disadvantages of the constitutive laws. It was found that a specific form of the polyconvex type as well as the exponential Fung-type law from the previous study were most suitable for modelling the orthotropic behaviour of myocardium under simple shear.
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Affiliation(s)
- H Schmid
- Department of Continuum Mechanics, RWTH Aachen University, Aachen, Germany.
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Pang Y, He CD, Liu Y, Wang KB, Xiao T, Wang YK, Zhu H, Wei B, Zhao N, Jiang Y, Wei HC, Chen HD. Combination of short CAG and GGN repeats in the androgen receptor gene is associated with acne risk in North East China. J Eur Acad Dermatol Venereol 2008; 22:1445-51. [PMID: 18624843 DOI: 10.1111/j.1468-3083.2008.02891.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Acne vulgaris is one of the most common skin disorders, and androgen is known to play a key role in the development of acne. However, the exact genetic mechanism by which androgen receptor (AR) gene affects acne development is still unclear. OBJECTIVE Our study aimed to investigate whether CAG and GGN polymorphism of the AR gene are associated with acne risk. PATIENTS AND METHODS Two hundred thirty-eight patients and 207 controls were included in the study. The repeat lengths of the AR gene were determined by GeneScan analysis. RESULTS Men with CAG < 23 and women with CAG < 24 had significant risk compared to those men with CAG > or = 23 [odds ratio (OR), 2.07; 95% confidence interval (95% CI), 1.21-3.54] and women with CAG > or = 24 (OR, 2.05; 95% CI, 1.18-3.56). In males, GGN repeats, considered independently of the CAG repeat, have no significant effect on the acne risk; however, when combined with CAG repeats, the acne patients exhibited significantly higher frequency of the haplotypes CAG < 23/GGN < or = 23 (OR, 3.33; 95% CI, 1.10-10.07; P < 0.05) compared with the controls. CONCLUSION Our results of this study strongly indicated that a shorter CAG repeat length and specific haplotypes of AR attributed to the risk of acne development and thus could serve as a susceptibility marker.
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Affiliation(s)
- Y Pang
- Department of Dermatology, No. 1 Hospital of China Medical University, Ministry of Health, Shenyang, China
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Wu YB, Yuan CX, Gao F, Lü HG, Guo JC, Li SD, Wang YK, Yang P. Hydrometal Complexes with More than One Planar and Quasi-Planar Tetracoordinate Carbon Atom: From Hydrogen-Surrounded Pieces to the Rudiment of Hydrogen-Sealed Nanotubes. Organometallics 2007. [DOI: 10.1021/om070058n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan-Bo Wu
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Cai-Xia Yuan
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Fei Gao
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Hai-Gang Lü
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Jin-Chang Guo
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Si-Dian Li
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Yue-Kui Wang
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Pin Yang
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
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Hexham JM, King V, Dudas D, Graff P, Mahnke M, Wang YK, Goetschy JF, Plattner D, Zurini M, Bitsch F, Lake P, Digan ME. Optimization of the anti-(human CD3) immunotoxin DT389-scFv(UCHT1) N-terminal sequence to yield a homogeneous protein. Biotechnol Appl Biochem 2001; 34:183-7. [PMID: 11730486 DOI: 10.1042/ba20010073] [Citation(s) in RCA: 3] [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: 11/17/2022]
Abstract
The production and regulatory approval processes for biopharmaceuticals require detailed characterization of potential products. Therapeutic proteins should preferably be homogeneous, although limited, reproducible, heterogeneity may be tolerated. A diphtheria toxin-based anti-(human CD3) immunotoxin, DT389-scFv(UCHT1), was expressed in Escherichia coli and purified following refolding [DT389 corresponds to amino acids 1-389 of diphtheria toxin, scFv is single-chain variable-region antibody fragment and UCHT1is an anti-(human CD3) monoclonal antibody]. Biochemical characterization of this molecule by MS and N-terminal sequencing by Edman degradation revealed that the protein was heterogeneous at the N-terminus, containing species both with (60%) and without (40%) the initiator methionine residue. In an attempt to generate an N-terminally homogeneous molecule, a panel of seven N-terminal variants was designed, based on the published specificity of bacterial methionine aminopeptidase. Following bacterial expression, partial purification and separation on SDS/PAGE, these proteins were subjected to N-terminal sequencing by Edman degradation. Three of the mutants yielded a 100% homogeneous amino acid sequence. By contrast, the original DT389-scFv(UCHT1) protein and four variant proteins yielded two sequences with varying ratios corresponding to species with and without methionine. The N-terminal sequences of the three homogeneous clones were MLADD and MLDD, where the methionine was completely retained, and SADD, where the methionine was completely removed. One of the homogeneous mutants (SADD) was expressed, refolded and purified and found to be equipotent with the parent immunotoxin. Thus, using a rational mutagenesis approach, three N-terminally homogeneous variants of DT389-scFv(UCHT1) have been identified, at least one of which is functionally indistinguishable from the parent immunotoxin. This approach is generally applicable to biopharmaceutical production and immunotoxin development in particular.
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Affiliation(s)
- J M Hexham
- Transplantation Research, Novartis Pharmaceuticals, 556 Morris Ave, Summit, NJ 07901, U.S.A.
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Van Raay TJ, Wang YK, Stark MR, Rasmussen JT, Francke U, Vetter ML, Rao MS. frizzled 9 is expressed in neural precursor cells in the developing neural tube. Dev Genes Evol 2001; 211:453-7. [PMID: 11685582 DOI: 10.1007/s004270100174] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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] [Received: 01/03/2001] [Accepted: 06/05/2001] [Indexed: 11/25/2022]
Abstract
The wnt signaling pathway has important functions in nervous system development. To better understand this process we have cloned and analyzed the expression of the wnt receptor, frizzled 9, in the developing nervous system in mouse, chick and zebrafish. The earliest expression of mouse frizzled 9 mRNA expression begins at E8.5 with expression throughout the entire rostral-caudal neuraxis. This early expression pattern within the neural tube appears to be conserved between chick and zebrafish. Expression becomes restricted to a ventral domain in the mouse ventricular zone at E11.5, a region specified to give rise to neurons and glia. Using a polyclonal antibody to MFZ9 further shows expression limited to neural restricted precursors cells.
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Affiliation(s)
- T J Van Raay
- Department of Neurobiology and Anatomy, University of Utah School of Medicine, 50 N Medical Drive, Salt Lake City, UT 84132, USA
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Abstract
Systematic analysis of proteins is essential in understanding human diseases and their clinical treatments. To achieve the rapid and unambiguous identification of marker or target proteins, a new procedure termed "inverse labeling" is proposed. With this procedure, to evaluate protein expression of a diseased or a drug-treated sample in comparison with a control sample, two converse labeling experiments are performed in parallel. The perturbed sample (by disease or by drug treatment) is labeled in one experiment, whereas the control is labeled in the second experiment. When mixed and analyzed with its unlabeled counterpart for differential comparison using mass spectrometry, a characteristic inverse labeling pattern of mass shift will be observed between the two parallel analyses for proteins that are differentially expressed. In this study, protein labeling is achieved through 18O incorporation into peptides by proteolysis performed in [18O]water. Once the peptides are identified with the characteristic inverse labeling pattern of 18O/16O ion intensity shift, MS data of peptide fingerprints or peptide sequence information can be used to search a protein database for protein identification. The methodology has been applied successfully to two model systems in this study. It permits quick focus on the signals of differentially expressed proteins. It eliminates the detection ambiguities caused by the dynamic range of detection on proteins of extreme changes in expression. It enables the detection of protein modifications responding to perturbation. This strategy can also be extended to other protein-labeling methods, such as chemical or metabolic labeling, to realize the same benefits.
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Affiliation(s)
- Y K Wang
- Core Technologies Area, Discovery Research, Novartis Pharmaceuticals Corporation, Summit, New Jersey 07901, USA.
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Abstract
We previously demonstrated that collagen gel overlay induced cell remodeling to form lumen and apoptosis in Madin-Darby canine kidney cells. In the present study, we established that collagen gel overlay-induced apoptosis was initiated at areas exclusive of cell remodeling within 24 h (first phase) and extended into areas of cell remodeling within 48 h (second phase). Collagen gel overlay-induced apoptosis was accompanied by selective proteolysis of focal adhesion kinase (FAK), talin, p130cas, and c- src. Upon collagen gel overlay, FAK was initially degraded into a 90-kDa product during the first phase and subsequently into a 80-kDa product during the second phase. Collagen gel overlay-induced apoptosis of focal adhesion complex proteins and apoptosis of the first phase could be blocked only by a protease inhibitor cocktail. In addition, we found that both DEVD-fmk and ZVAD-fmk inhibited secondary proteolysis of FAK, but only ZVAD-fmk blocked collagen gel overlay-induced apoptosis of the second phase. Finally, collagen gel overlay-induced apoptosis and proteolysis of focal adhesion complex proteins were completely inhibited by the combination of protease inhibitor cocktail and ZVAD-fmk. Taken together, collagen gel overlay induces two phases of apoptosis; the first phase is dependent on proteolysis of focal adhesion complex proteins, and the second phase on activation of caspases.
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Affiliation(s)
- Y K Wang
- Department of Physiology, National Cheng-Kung University Medical College, Tainan, Taiwan 70101, Republic of China
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Pérez Jurado LA, Wang YK, Francke U, Cruces J. TBL2, a novel transducin family member in the WBS deletion: characterization of the complete sequence, genomic structure, transcriptional variants and the mouse ortholog. Cytogenet Cell Genet 1999; 86:277-84. [PMID: 10575226 DOI: 10.1159/000015319] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Williams-Beuren syndrome (WBS) is a developmental disorder with multi-system manifestations caused by haploinsufficiency for contiguous genes deleted in chromosome region 7q11.23. The size of the deletion is similar in most patients due to a genomic duplication that predisposes to unequal meiotic crossover events. While hemizygosity at the elastin locus is responsible for the cardiovascular features, the contribution of other genes to the WBS phenotype remains to be demonstrated. We have identified a novel gene, TBL2, in the common WBS deletion. TBL2 is expressed as a 2. 4-kb transcript predominantly in testis, skeletal muscle, heart and some endocrine tissues, with a larger approximately 5-kb transcript detected ubiquitously at lower levels. TBL2 encodes a protein with four putative WD40-repeats. An alternatively spliced transcript in TBL2 introduces a novel second exon with an in frame stop codon. This mRNA encodes a 75 amino acid protein with 43 amino acids identical to TBL2 at the N-terminus and no known functional domain. The mouse homolog, Tbl2, shows 84% sequence identity at the nucleotide level and 92% similarity at the amino acid level. Comparison of the mouse and human sequences identifies a conserved region that extends upstream of the previously published sequence with an initiation codon common to both species that adds 21 amino acids at the N-terminus. The Tbl2 gene has been mapped to mouse chromosome 5 in a region of conserved synteny with human 7q11.23. Since haploinsufficiency has been shown for other WD-repeat containing proteins, hemizygosity of TBL2 may contribute to some of the aspects of the complex WBS phenotype.
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Affiliation(s)
- L A Pérez Jurado
- Servicio de Genética, Hospital Universitario La Paz, Madrid, Spain.
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Perepnikhatka V, Fischer FJ, Niimi M, Baker RA, Cannon RD, Wang YK, Sherman F, Rustchenko E. Specific chromosome alterations in fluconazole-resistant mutants of Candida albicans. J Bacteriol 1999; 181:4041-9. [PMID: 10383973 PMCID: PMC93895 DOI: 10.1128/jb.181.13.4041-4049.1999] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.6] [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: 02/03/1999] [Accepted: 04/23/1999] [Indexed: 11/20/2022] Open
Abstract
The exposure of Candida albicans to fluconazole resulted in the nondisjunction of two specific chromosomes in 17 drug-resistant mutants, each obtained by an independent mutational event. The chromosomal changes occurred at high frequencies and were related to the duration of the drug exposure. The loss of one homologue of chromosome 4 occurred after incubation on a fluconazole medium for 7 days. A second change, the gain of one copy of chromosome 3, was observed after exposure for 35 or 40 days. We found that the mRNA levels of ERG11, CDR1, CDR2, and MDR1, the candidate fluconazole resistance genes, remained either the same or were diminished. The lack of overexpression of putative drug pumps or the drug target indicated that some other mechanism(s) may be operating. The fluconazole resistance phenotype, electrophoretic karyotypes, and transcript levels of mutants were stable after growth for 112 generations in the absence of fluconazole. This is the first report to demonstrate that resistance to fluconazole can be dependent on chromosomal nondisjunction. Furthermore, we suggest that a low-level resistance to fluconazole arising during the early stages of clinical treatment may occur by this mechanism. These results support our earlier hypothesis that changes in C. albicans chromosome number is a common means to control a resource of potentially beneficial genes that are related to important cellular functions.
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Affiliation(s)
- V Perepnikhatka
- Department of Biochemistry and Biophysics, University of Rochester Medical School, Rochester, New York 14642, USA
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He T, Chandramouli N, Fu E, Wu A, Wang YK. Analysis of reduced and oxidized forms of cytochrome c by capillary electrophoresis and capillary electrophoresis-mass spectrometry. Anal Biochem 1999; 271:189-92. [PMID: 10419636 DOI: 10.1006/abio.1999.4133] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- T He
- Core Technologies Area, Novartis Institute for Biomedical Research, Novartis Pharmaceuticals Corporation, Summit, New Jersey 07901, USA
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Abstract
We describe here a procedure by capillary electrophoresis-mass spectrometry (CE-MS) for the direct analysis of urine samples on diagnostic metabolites, which are present in patient urine with metabolic disorders. The method was demonstrated using urine samples spiked with diagnostic metabolites, including glutathione for gamma-glutamyl transpeptidase deficiency, pyroglutamate for generalized glutathione deficiency, adenylosuccinate for adenylosuccinase deficiency, omithine for gyrate atrophy, histidine for histidinemia, and homogentisic acid for alcaptonuria, at concentrations similar to those found in patients' urine. A coaxial sheath liquid flow was used for coupling CE and MS in electrospray ionization mode. Identification of the metabolites is based on their molecular weights and fragmentation patterns. The CE-MS method is highly specific and sensitive comparing to the previously reported method using migration time and UV absorption for identification. It should find broad application in clinical and pharmaceutical research and development.
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Affiliation(s)
- T He
- Core Technologies Area, Discovery Research, Novartis Pharmaceuticals Corporation, Summit, NJ 07901, USA
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Wang YK, Spörle R, Paperna T, Schughart K, Francke U. Characterization and expression pattern of the frizzled gene Fzd9, the mouse homolog of FZD9 which is deleted in Williams-Beuren syndrome. Genomics 1999; 57:235-48. [PMID: 10198163 DOI: 10.1006/geno.1999.5773] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [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] [Indexed: 11/22/2022]
Abstract
The frizzled gene family is conserved from insects to mammals and codes for putative Wnt receptors that share a cysteine-rich extracellular domain and seven transmembrane domains. We previously identified a novel frizzled gene, FZD3, now renamed FZD9, in the Williams-Beuren syndrome (WBS) deletion region at chromosomal band 7q11.23 and showed that its product can interact with the Drosophila wingless protein. Here, we report the characterization of the mouse homolog Fzd9. The Fzd9 gene produces a 2.4-kb transcript encoding a 592-amino-acid protein with 95% identity to the human FZD9. Fzd9 was mapped to the conserved syntenic region on distal mouse chromosome 5. By RNA in situ hybridization studies of whole-mount embryos and sections we delineated the temporal and spatial expression patterns in the neural tube, trunk skeletal muscle precursors (myotomes), limb skeletal anlagen, craniofacial regions, and nephric ducts. In adult mouse tissue, the Fzd9 transcript is abundantly present in heart, brain, testis, and skeletal muscle. In testis, Fzd9 is expressed in all spermatogenic cell types. Immunohistochemical studies of cells transfected with a Fzd9 expression construct confirm that Fzd9 is a membrane protein. These results suggest potential Wnt ligands of Fzd9, a role of Fzd9 in skeletal muscle specification, and contributions of FZD9 to the WBS phenotype.
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MESH Headings
- Amino Acid Sequence
- Animals
- Blotting, Northern
- Cell Membrane/immunology
- Cell Membrane/metabolism
- Chromosome Mapping
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Embryo, Mammalian/metabolism
- Frizzled Receptors
- Gene Deletion
- Gene Expression
- Gene Expression Regulation, Developmental
- Humans
- In Situ Hybridization
- Male
- Mice
- Molecular Sequence Data
- Nervous System/embryology
- Nervous System/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/immunology
- Receptors, G-Protein-Coupled
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Somites/metabolism
- Testis/embryology
- Testis/metabolism
- Tissue Distribution
- Williams Syndrome/genetics
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Affiliation(s)
- Y K Wang
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA
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