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Nan X, Wang QX, Xing SJ, Liang ZG. Design, synthesis, and biological evaluation of thiazole/thiadiazole carboxamide scaffold-based derivatives as potential c-Met kinase inhibitors for cancer treatment. J Enzyme Inhib Med Chem 2023; 38:2247183. [PMID: 37642355 PMCID: PMC10467532 DOI: 10.1080/14756366.2023.2247183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023] Open
Abstract
As part of our continuous efforts to discover novel c-Met inhibitors as antitumor agents, four series of thiazole/thiadiazole carboxamide-derived analogues were designed, synthesised, and evaluated for the in vitro activity against c-Met and four human cancer cell lines. After five cycles of optimisation on structure-activity relationship, compound 51am was found to be the most promising inhibitor in both biochemical and cellular assays. Moreover, 51am exhibited potency against several c-Met mutants. Mechanistically, 51am not only induced cell cycle arrest and apoptosis in MKN-45 cells but also inhibited c-Met phosphorylation in the cell and cell-free systems. It also exhibited a good pharmacokinetic profile in BALB/c mice. Furthermore, the binding mode of 51am with both c-Met and VEGFR-2 provided novel insights for the discovery of selective c-Met inhibitors. Taken together, these results indicate that 51am could be an antitumor candidate meriting further development.
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Affiliation(s)
- Xiang Nan
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
- School of Biomedical Engineering, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, Shenzhen, China
| | - Qiu-Xu Wang
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Shao-Jun Xing
- School of Biomedical Engineering, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, Shenzhen, China
| | - Zhi-Gang Liang
- Department of Stomatology, Shenzhen Second People’s Hospital, Shenzhen, China
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Tian X, Huang XX, Zhang ZT, Wei PJ, Wang QX, Chang H, Xiao W, Gao Y. Long-Term Outcome of Rectal Cancer Patients Treated by High-Dose Radiotherapy and Concurrent Chemotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e345. [PMID: 37785200 DOI: 10.1016/j.ijrobp.2023.06.2411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To explore the therapeutic efficacy and adverse effects of high-dose radiotherapy concurrently with chemotherapy in treating patients with non-metastatic rectal cancer. MATERIALS/METHODS Patients were enrolled if they were diagnosed with stage I-III rectal adenocarcinoma, refused surgery and received high-dose pelvic radiotherapy and concurrent chemotherapy instead. Their clinical data were retrospectively analyzed for calculating local control and survival rates. Treatment related toxicities was evaluated according to the Common Terminology Criteria for Adverse Events (version 5.0). RESULTS Between April 2006 and February 2021, a total of 93 patients in our medical center were eligible for this study, with a median age of 61 (range, 21-84) years. Of those, 86 (92.5%) patients had tumors located within 5 cm of the anal verge. There were 8 (8.6%), 30 (32.3%) and 55 (59.1%) patients diagnosed with stage I, II and III, respectively. All patients received fluorouracil-based chemotherapy (single-agent fluorouracil or FOLFOX regimen). The irradiation techniques included three-dimensional conformal and intensity-modulated radiation therapy. The median total radiation dose for gross tumor volume (GTV) was 80 (range, 60-90) Gy. The 15 (16.1%) patients refusing surgery before treatment received one course of radiation (60-70 Gy/30-35 Fr). And a 2-course radiation (Course 1, 45-50 Gy/25 Fr; Course 2: 24-40 Gy/12-20 Fr) were given to the 78 (83.9%) patients who failed to achieve clinical complete remission (cCR) after neoadjuvant chemoradiotherapy but still refused surgery, with a median interval of 79 (range, 35-195) days. The median follow-up duration was 66 (range, 10-161) months. The 3- and 5-year overall survival (OS) rates for all patients were 90.5% and 72.7%, respectively. The clinical complete remission rate at the end of chemoradiotherapy was 69.9%. Colostomy was performed in the 14 patients whose rectal tumor did not attain cCR or progressed. There was no grade 4/5 severe acute toxicity. No patient suffered from intestinal perforation. Only one patient developed anal stenosis. Because of rectal bleeding, blood transfusion was performed in 7 patients, and one patient underwent an enterostomy. CONCLUSION High-dose radiotherapy concurrent with chemotherapy brought encouraging survival outcomes, satisfactory organ preservation and acceptable short- and long-term side effects. It might be a safe and non-invasive alternative to abdominoperineal resection in rectal cancer patients refusing or unsuitable for surgery, especially for those with a low-position tumor.
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Affiliation(s)
- X Tian
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - X X Huang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Z T Zhang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - P J Wei
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Q X Wang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H Chang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - W Xiao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Y Gao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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Wang K, Qin Y, Wang QX, Huang WJ, Yu QQ, Li Y, Xiong Y, Guo YW, Tang J. [A randomized controlled study on the long-term efficacy of intra-cervical lymphatic immunotherapy for adult allergic rhinitis]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:871-877. [PMID: 37675525 DOI: 10.3760/cma.j.cn115330-20230330-00142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Objective: To determine the long-term efficacy and safety of intra-cervical lymphatic immunotherapy (ICLIT) for adult allergic rhinitis (AR) by comparing it with subcutaneous immunotherapy (SCIT). Methods: A total of 100 adult AR patients with dust mite allergy in Department of Otorhinolaryngology, First People's Hospital of Foshan from Feb 2018 to Dec 2019 were randomly divided into two groups, 50 in SCIT group [including 42 males and 8 females, aging (32.55±9.72) years] and 50 in ICLIT group [including 45 males and 5 females, aging (31.33±9.84) years]. The changes in total symptom score (total system score, TSS), nasal symptom score (total nasal symptom score, TNSS), eye symptom score (total ocular scoring system, TOSS), drug score (total medication score, TMS), and quality of life score of the two groups of patients were evaluated before and after treatment, and the adverse reactions of all patients during the treatment period were recorded. The changes in the level of dust mite specific IgE (sIgE) in the serum were evaluated. GraphPad Prism 9.0 software was used for statistical analysis. Results: In the SCIT group, 38 patients completed treatment and follow-up, with a dropout rate of 24%. In the ICLIT group, 48 patients completed treatment and follow-up, with a dropout rate of only 4%. The scores of TSS, TNSS, TOSS, TMS, and quality of life in the ICLIT group before treatment were 32.1±3.0, 27.3±3.1, 4.8±2.8, 2.3±0.9, and 68.1±28.7, respectively; After 36 months of treatment, the scores were 21.8±11.4, 18.1±9.4, 3.7±2.9, 1.3±1.1, and 36.0±26.7, respectively, which were significantly lower than those before treatment (all P<0.001). After 36 months of treatment, the TSS of the ICLIT group improved by 10.3±11.2 compared to before, while the TSS of the SCIT group improved significantly by 21.9±11.0 compared to before, with statistically significant differences between the groups (P<0.001). No serious systemic adverse reactions occurred in both groups of patients. Conclusions: ICLIT treatment for adult AR has long-term efficacy, high safety, and high compliance, but its long-term efficacy is not as good as SCIT. ICLIT can be considered as a new complementary option for AR immunotherapy.
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Affiliation(s)
- K Wang
- The Department of Otorhinolaryngology, First People's Hospital of Foshan, Foshan 528000, China
| | - Y Qin
- Guangdong Medical University, Zhanjiang 524023, China
| | - Q X Wang
- the Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - W J Huang
- The Department of Otorhinolaryngology, First People's Hospital of Foshan, Foshan 528000, China
| | - Q Q Yu
- The Department of Otorhinolaryngology, First People's Hospital of Foshan, Foshan 528000, China
| | - Y Li
- The Department of Otorhinolaryngology, First People's Hospital of Foshan, Foshan 528000, China
| | - Y Xiong
- the Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - Y W Guo
- the Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - J Tang
- The Department of Otorhinolaryngology, First People's Hospital of Foshan, Foshan 528000, China Guangdong Medical University, Zhanjiang 524023, China the Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
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Wang QX, Feng QY, Zhu XQ. [Determination of bisphenols in sediment by accelerated solvent extraction and solid-phase extraction purification coupled with ultra performance liquid chromatography-tandem mass spectrometry]. Se Pu 2023; 41:582-590. [PMID: 37387279 DOI: 10.3724/sp.j.1123.2022.12015] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
Bisphenols are endocrine disruptors that are characterized with bioaccumulation, persistence, and estrogenic activity. Even low contents of bisphenols can exert adverse effects on human health and the ecological environment. Herein, a method combining accelerated solvent extraction and solid-phase extraction purification with ultra performance liquid chromatography-tandem mass spectrometry was developed for the accurate detection of bisphenol A (BPA), bisphenol B (BPB), bisphenol F (BPF), bisphenol S (BPS), bisphenol Z (BPZ), bisphenol AF (BPAF), and bisphenol AP (BPAP) in sediments. The mass spectrometric parameters of the seven bisphenols were optimized, and the response values, separation effects, and chromatographic peak shapes of the target compounds were compared under three different mobile phase conditions. The sediment samples were pretreated by accelerated solvent extraction, and orthogonal tests were used to optimize the extraction solvent, extraction temperature, and cycle number. The results showed that the use of 0.05% (v/v) ammonia and acetonitrile as the mobile phase for gradient elution could rapidly separate the seven bisphenols on an Acquity UPLC BEH C18 column (100 mm×2.1 mm, 1.7 μm). The gradient program was as follows: 0-2 min, 60%A; 2-6 min, 60%A-40%A; 6-6.5 min, 40%A; 6.5-7 min, 40%A-60%A; 7-8 min, 60%A. Orthogonal experiments indicated that the optimal extraction conditions were as follows: extraction solvent of acetonitrile, extraction temperature of 100 ℃, and cycle number of three. The seven bisphenols showed good linearity in the range of 1.0-200 μg/L, with correlation coefficients (r2) greater than 0.999, and the limits of detection were 0.01-0.3 ng/g. The recoveries for the seven bisphenols ranged from 74.9% to 102.8% at three spiking levels (2.0, 10, 20 ng/g), with relative standard deviations ranging from 6.2% to 10.3%. The established method was applied to detect the seven bisphenols in sediment samples collected from Luoma Lake and its inflow rivers. BPA, BPB, BPF, BPS, and BPAF were detected in the sediments of the lake, and BPA, BPF, and BPS were detected in the sediments of its inflow rivers. The detection frequency of BPA and BPF was 100%, and the contents of these bisphenols in the sediment were 11.9-38.0 ng/g and 11.0-27.3 ng/g, respectively. The developed method is simple, rapid with high accuracy and precision, and is suitable for the determination of the seven bisphenols in sediment.
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Affiliation(s)
- Qiu-Xu Wang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Qi-Yan Feng
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Xue-Qiang Zhu
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
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Smith WR, Wang QX. The role of surface tension on the growth of bubbles by rectified diffusion. Ultrason Sonochem 2023; 98:106473. [PMID: 37331195 PMCID: PMC10293769 DOI: 10.1016/j.ultsonch.2023.106473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/30/2023] [Accepted: 06/06/2023] [Indexed: 06/20/2023]
Abstract
Rectified diffusion has wide and important applications in sonochemistry, ultrasonic cleaning and medical ultrasound. Recent experimental results have demonstrated that the addition of surfactant substantially enhances bubble growth rate. As a hypothesis, this was widely attributed to the acoustic microstreaming and mass transfer resistance caused by surfactants. In this research, the effects of the surfactant of sodium dodecyl sulphate on the rectification have been simulated by considering only the variation of the surface tension coefficient due to the surfactant. The computations are carried out using a newly developed tractable model based on the multi-scale method and the method of matched asymptotic expansions, which allows the prediction of bubble growth taking place over millions of oscillation cycles. The rate of bubble growth observed in the experiments is accurately predicted by our computations, for a range for bulk surfactant SDS concentrations less than or equal to 2.4 mM. Contrary to the widely held hypothesis in the published literature, this has demonstrated that the dominant physical mechanisms remain the shell and area effects in this range of bulk surfactant concentrations. The further enhancement of bubble growth rate provided by either acoustic microstreaming or the resistance to mass transfer is only evident at higher bulk surfactant concentrations. Therefore, the role of surface tension in rectified diffusion for aqueous surfactant solutions is more significant than previously understood. The new results also show that the bubble growth rate is sensitive to small changes in the bubble radius which may account for its unpredictability in applications of sonochemistry.
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Affiliation(s)
- W R Smith
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Q X Wang
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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Wang QX, Duan ZH, Liu SQ, Feng YD, Shi RH. [Efficacy of stent placement in treatment of malignant tracheoesophageal fistula and relevant factors of fistula closure]. Zhonghua Yi Xue Za Zhi 2023; 103:111-116. [PMID: 36597738 DOI: 10.3760/cma.j.cn112137-20220915-01951] [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: 01/05/2023]
Abstract
Objective: To investigate the efficacy of stent placement in the treatment of malignant tracheoesophageal fistula (MTEF) and the factors affecting the closure of the fistula. Methods: Clinical, pathological, laboratory, and imaging data of 288 patients with MTEF admitted to Zhongda Hospital, Southeast University from 2015 to 2021were retrospectively analyzed. Among them, there were 208 males; the age was (63.6±10.5) years. A total of 94 patients received conservative treatment (conservative group), and 194 in the stent group (170 cases with esophageal stents and 24 cases with tracheal stents). Patients were followed-up at 2 weeks, 1 month, 3 months, and 6 months to evaluate the effect of stent implantation. Multivariable logistic regression was used to analyze factors affecting fistula closure. Results: Age, fistula size, leukocyte count before treatment, and fistula location were significantly different between the conservative group and the stent group (P<0.05). The Karnofsky functional status (KPS) score before treatment in the conservative group was lower than the stent group, (45.1±1.0) vs (51.8±0.7) scores, respectively (P<0.001). After 2 weeks and 1 month of treatment, improvement in KPS scores was significantly better in the stent group than in the conservative group (P<0.05). At 1 month, the pulmonary infection rate in the stent group was 33.5% (58/173), significantly lower than that in the conservative group [77.0% (47/61); P<0.001]. Among the 288 patients, the fistula was closed in 196 patients and unclosed in 92 patients. Fistula size (OR=3.429, 95%CI: 1.623-7.829, P=0.001), leukocyte count before treatment (OR=1.160, 95%CI: 1.027-1.317, P=0.018), KPS score before treatment (OR=0.898, 95%CI: 0.848-0.945, P<0.001) and the treatment method (conservative treatment as reference, esophageal stent OR=0.010, 95%CI: 0.004-0.030, P<0.001; tracheal stent OR=0.003, 95%CI: 0.000-0.042, P<0.001) were factors affecting fistula closure. In the 170 patients in the esophageal stent group, early complications (≤24 h) occurred in 71 patients, and late (>24 h) complications occurred in 11 patients. While in the 24 patients in the tracheal stent group, 9 had early complications and 2 had late complications. Conclusions: Stent placement is an effective treatment for MTEF compared to conservative treatment. Stent treatment, small fistula size, low pre-treatment leukocyte count, and high pre-treatment KPS score are beneficial to fistula closure.
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Affiliation(s)
- Q X Wang
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - Z H Duan
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - S Q Liu
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - Y D Feng
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - R H Shi
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
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Wang QX, Shi RH, Duan ZH. [Management advances of malignant tracheoesophageal fistula]. Zhonghua Nei Ke Za Zhi 2022; 61:598-602. [PMID: 35488617 DOI: 10.3760/cma.j.cn112138-20210524-00368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Q X Wang
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - R H Shi
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - Z H Duan
- Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing 210009, China
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Yao JF, Deng MZ, Xie T, Chen K, Wang QX, Liang ZG. Study on the application of oral digital design in aesthetic restoration of anterior teeth of cleft lip/palate patients. Hua Xi Kou Qiang Yi Xue Za Zhi 2021; 39:582-590. [PMID: 34636208 PMCID: PMC8548225 DOI: 10.7518/hxkq.2021.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/19/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES A study was conducted to investigate the clinical effects of oral digital design on the aesthetic restoration of anterior teeth of cleft lip/palate patients. METHODS Nine adult cleft lip/palate patients who need aesthetic restoration of anterior teeth were recruited. Digital information of patients' dental arches, the surrounding soft tissue and face were captured by digital camera and scanner. The aesthetic analysis and design were conducted using keynote and 3shape software and were demonstrated to the patients. The optimized treatment plan was ensured by communicating with the patients. Digital wax-up models were exported and printed into resin diagnostic models, which were then utilized in the treatment process to guide the doctors and the technicians in tooth preparation and in making the final restorations, respectively. The adhesive procedure was completed after satisfactory try-in. Aesthetics assessment was conducted in accordance with the anterior esthetic evaluation form. The scores of patient's satisfaction were recorded on a questionnaire containing six items of aesthetic index and doctor-patient communication. Patients were interviewed and examined after 1, 3, 6, and 12 months, respectively, and the clinical effects of restorations were evaluated. RESULTS All nine patients had satisfactory clinical results. The aesthetic defects of the patients were effectively addressed. All treatments met the requirements of the preoperative digital designs. The patients' scores were all above 90 on the satisfaction scale. At 12 months after the operation, the clinical effects of restorations of all cases achieved A class in each evaluation indicator. CONCLUSIONS For cleft lip/palate patients with esthetic defect in the anterior teeth, the digital design plays an important role in optimizing the treatment plan and guides the whole treatment process. This design can help clinicians achieve predictable satisfactory aesthetic results.
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Affiliation(s)
- Jin-Feng Yao
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Meng-Zhao Deng
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Tian Xie
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Kan Chen
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Qiu-Xu Wang
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
| | - Zhi-Gang Liang
- Dept. of Stomatology, The Shenzhen Second People,s Hospital/The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518035, China
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Vyas N, Wang QX, Walmsley AD. Improved biofilm removal using cavitation from a dental ultrasonic scaler vibrating in carbonated water. Ultrason Sonochem 2021; 70:105338. [PMID: 32979637 PMCID: PMC7786568 DOI: 10.1016/j.ultsonch.2020.105338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/23/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
The use of cavitation for improving biofilm cleaning is of great interest. There is no system at present that removes the biofilm from medical implants effectively and specifically from dental implants. Cavitation generated by a vibrating dental ultrasonic scaler tip can clean biomaterials such as dental implants. However, the cleaning process must be significantly accelerated for clinical applications. In this study we investigated whether the cavitation could be increased, by operating the scaler in carbonated water with different CO2 concentrations. The cavitation around an ultrasonic scaler tip was recorded with high speed imaging. Image analysis was used to calculate the area of cavitation. Bacterial biofilm was grown on surfaces and its removal was imaged with a high speed camera using the ultrasonic scaler in still and carbonated water. Cavitation increases significantly with increasing carbonation. Cavitation also started earlier around the tips when they were in carbonated water compared to non-carbonated water. Significantly more biofilm was removed when the scaler was operated in carbonated water. Our results suggest that using carbonated water could significantly increase and accelerate cavitation around ultrasonic scalers in a clinical situation and thus improve biofilm removal from dental implants and other biomaterials.
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Affiliation(s)
- N Vyas
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK
| | - Q X Wang
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - A D Walmsley
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK.
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Vyas N, Wang QX, Manmi KA, Sammons RL, Kuehne SA, Walmsley AD. How does ultrasonic cavitation remove dental bacterial biofilm? Ultrason Sonochem 2020; 67:105112. [PMID: 32283494 DOI: 10.1016/j.ultsonch.2020.105112] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 02/04/2020] [Accepted: 03/26/2020] [Indexed: 05/24/2023]
Abstract
Bacterial biofilm accumulation is problematic in many areas, leading to biofouling in the marine environment and the food industry, and infections in healthcare. Physical disruption of biofilms has become an important area of research. In dentistry, biofilm removal is essential to maintain health. The aim of this study is to observe biofilm disruption due to cavitation generated by a dental ultrasonic scaler (P5XS, Acteon) using a high speed camera and determine how this is achieved. Streptococcus sanguinis biofilm was grown on Thermanox™ coverslips (Nunc, USA) for 4 days. After fixing and staining with crystal violet, biofilm removal was imaged using a high speed camera (AX200, Photron). An ultrasonic scaler tip (tip 10P) was held 2 mm away from the biofilm and operated for 2 s. Bubble oscillations were observed from high speed image sequences and image analysis was used to track bubble motion and calculate changes in bubble radius and velocity on the surface. The results demonstrate that most of the biofilm disruption occurs through cavitation bubbles contacting the surface within 2 s, whether individually or in cavitation clouds. Cleaning occurs through shape oscillating microbubbles on the surface as well as through fluid flow.
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Affiliation(s)
- N Vyas
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK
| | - Q X Wang
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - K A Manmi
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; Department of Mathematics, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - R L Sammons
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK
| | - S A Kuehne
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK
| | - A D Walmsley
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, 5 Mill Pool Way, Birmingham B5 7EG, UK.
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Manmi KMA, Wu WB, Vyas N, Smith WR, Wang QX, Walmsley AD. Numerical investigation of cavitation generated by an ultrasonic dental scaler tip vibrating in a compressible liquid. Ultrason Sonochem 2020; 63:104963. [PMID: 31986331 DOI: 10.1016/j.ultsonch.2020.104963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Bacterial biofilm accumulation around dental implants is a significant problem leading to peri-implant diseases and implant failure. Cavitation occurring in the cooling water around ultrasonic scaler tips can be used as a novel solution to remove debris without any surface damage. However, current clinically available instruments provide insufficient cavitation around the activated tip surface. To solve this problem a critical understanding of the vibro-acoustic behaviour of the scaler tip and the associated cavitation dynamics is necessary. In this research, we carried out a numerical study for an ultrasound dental scaler with a curved shape tip vibrating in water, using ABAQUS based on the finite element method. We simulated the three-dimensional, nonlinear and transient interaction between the vibration and deformation of the scaler tip, the water flow around the scaler and the cavitation formation and dynamics. The numerical model was well validated with the experiments and there was excellent agreement for displacement at the free end of the scaler. A systematic parametric study has been carried out for the cavitation volume around the scaler tip in terms of the frequency, amplitude and power of the tip vibration. The numerical results indicate that the amount of cavitation around the scaler tip increases with the frequency and amplitude of the vibration. However, if the frequency is far from the natural frequency, the cavitation volume around the free end decreases due to reduced free end vibration amplitude.
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Affiliation(s)
- K M A Manmi
- School of Mathematics, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Mathematics, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - W B Wu
- College of Engineering, Peking University, Beijing 100871, China
| | - N Vyas
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - W R Smith
- School of Mathematics, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Q X Wang
- School of Mathematics, College of Engineering and Physical Sciences, University of Birmingham, Birmingham, United Kingdom.
| | - A D Walmsley
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
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Wang XH, Zhou CJ, Zhang S, Wang QX, Xiao WW, Ding PR, Chen G, Pan ZZ, Zeng ZF, Gao YH. [Comparison of long-term efficacy between watch and wait strategy and total mesorectal excision in locally advanced rectal cancer patients with clinical complete response after neoadjuvant therapy]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:266-273. [PMID: 32192306 DOI: 10.3760/cma.j.cn.441530-20200224-00081] [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 compare long-term efficacy between watch and wait (W&W) strategy and total mesorectal excision (TME) in patients who were diagnosed with locally advanced rectal cancer (LARC) and attained clinical complete response (cCR) after neoadjuvant chemoradiotherapy (nCRT). Methods: A retrospective cohort study was carried out. A total of 238 patients with stage II-III LARC exhibiting cCR after nCRT in Sun Yat-sen University Cancer Center from September 16, 2010 to January 9, 2018 were enrolled. Patients who were diagnosed with other malignant tumor within 5 years, did not receive regular follow-up in our center for more than 1 year and had no complete examination items after nCRT were excluded. Of 238 patients, 151 were male and 87 were female with a median age of 57 (27-83) years old. According to TNM stage, 61 cases were cII, 177 cases were cIII. Concurrent chemoradiotherapy (CCRT) was performed in 20 patients. CCRT plus induction/consolidated chemotherapy was performed in 218 patients. Intensity-modulated radiotherapy (IMRT) was applied to radiotherapy. The median radiation dose was 50 Gy/25 Fr for both the primary tumor and clinical target volumes, and the total dose was 45.0 to 50.6 Gy for 227 patients. In 27 patients, single-agent fluorouracil or capecitabine was used as concurrent chemotherapy. But in the other 211 patients, a combined regimen of oxaliplatin and fluorouracil or capecitabine was used. After nCRT, 59 and 179 patients received W&W (W&W group) and TME 6-12 weeks later (TME group), respectively. After the ending of treatment, patient was interviewed one time every 3 months and after 3 years, one time every six months. Overall survival (OS) rate, distant-metastasis-free survival (DMFS) rate, and local-recurrence-free survival (LRFS) rate were compared between two groups. The salvage treatment and sphincter preservation rate were analyzed. The survival curve was drawn with Kaplan-Meier method and evaluated by log-rank method. Results: In the cases treated with TME, the median interval from nCRT to surgery was 59 days. The postoperative pCR rate was 63.1%(113/179). The median follow-up time of the whole cohort was 41.8 (12.0-99.0) months. The 3-year and 5-year OS rates were 98.4% and 96.5%; the 3-year and 5-year LRFS rates were 96.5% and 96.5%; the 3- and 5-year DMFS rates were 91.0% and 87.9%, respectively. The 3-year OS rates in the W&W group and the TME group were 100% and 97.9%; the 5-year OS rates in W&W group and the TME group were 90.6% and 97.9% (P=0.339); The 3-year local recurrence rate (LRR) in the W&W group was 12.9% (7 cases recurred within 2 years), which was significanthy higher then that in the TME group (0.6%, P=0.003). Salvage surgery was successful in 5/6 cases. After salvage surgery, LRFS rate was not significantly different between the two groups (P=0.137). The 3-year DMFS rate in the W&W group and the TME group were 88.4% and 81.1%, whose difference was not significant (P=0.593). Recurrence with simultaneous metastasis was seen in 3/7 cases of the W&W group. The sphincter was preserved in 89.8% (53/59) of patients in the W&W group, which was significantly higher than 73.7% (132/179) in the TME group (P<0.001). When distance of tumor from the anal verge was ≤ 5 cm, the sphincter preservation rate (SPR) in the W&W group was 88.0% (44/50), which was significantly higher than the 54.4% (56/103) in the TME group (P<0.001). Conclusions: W&W is safe and feasible for patients with LARC and cCR after nCRT. The results should be verified by further clinical trials.
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Affiliation(s)
- X H Wang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - C J Zhou
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - S Zhang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Q X Wang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - W W Xiao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - P R Ding
- Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - G Chen
- Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Z Z Pan
- Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Z F Zeng
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Y H Gao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
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Shang LL, Su Z, Ma XJ, Wang YQ, Wang Y, Wang QX, Yang P. [Role of PI3K/Akt signaling pathway in ischemic rats underwent cardiac shock waves therapy]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:457-464. [PMID: 31262130 DOI: 10.3760/cma.j.issn.0253-3758.2019.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the role of PI3K/Akt signaling pathway in ischemic rats underwent cardiac shock therapy. Methods: Adult male Sprague Dawley (SD) rats weighing 220-250 g were used to establish a heart failure model by ligation of the left anterior descending coronary artery. Rat models were defined by echocardiographic assessment at 4 weeks post operation and heart failure rats were randomly divided into 4 groups,namely heart failure group (HF group, 9 cases),heart failure+cardiac shock waves therapy group (HF+CSWT group, 9 cases),heart failure+inhibitor(HF+LY294002 group, 9 cases),heart failure+cardiac shock waves therapy group+inhibitor (HF+CSWT+LY294002 group, 9 cases),and another 9 sham-operated SD rats served as control group (sham group, 9 cases). At 8 weeks postoperation, echocardiography was used to evaluate cardiac function in each group,myocardial infarct size was measured by TTC staining,the apoptotic index of rats cardiomyocytes were detected by TUNEL method,the myocardial mRNA expression of apoptosis-related factor was detected by real-time quantitative PCR, the protein expression levels of PI3K/Akt signaling pathway and apoptosis-related pathways were detected by Western blot. Results: (1) Eight weeks after operation, left ventricular end diastolic diameter (LVEDD) and left ventricular end systolic diameter (LVESD) were significantly lower in HF+CSWT group than in HF group (all P<0.05), left ventricular ejection fraction (LVEF) and left ventricular shortening rate (LVFS) were significantly higher in HF+CSWT group than in HF group (all P<0.05),LVEF was significantly lower in the HF+ CSWT+ LY294002 group than in HF+ CSWT group (P<0.05). (2) Myocardial infarct size was significantly lower in the HF+ CSWT group than in HF group ((5.57 ± 0.51)% vs. (25.56 ± 0.56)%, P<0.05), which was significantly higher in the HF+CSWT+LY294002 group than in HF+CSWT group ((12.90±2.34)% vs. (5.57±0.51)%,P<0.05). (3) The cardiomyocyte apoptotic index was significantly lower in the HF+CSWT group than in the HF group ((30.25±6.12)% vs. (53.85±9.89)%,P<0.05), which was significantly higher in the HF+CSWT+LY294002 group than in the HF+CSWT group ((46.12±3.42)% vs.(30.25±6.12)%,P<0.05). (4) The myocardial mRNA expression of Bcl-2 was significantly higher, while myocardial mRNA Bax and Caspase-3 expression were significantly lower in HF+CSWT group than in HF group and HF+CSWT+LY294002 group (all P<0.05). (5) The expression levels of p-Akt, Bcl-2 and pro-Caspase-3 in myocardial tissue were significantly higher in the HF+CSWT group than in the HF group and HF+CSWT+LY294002 group (all P<0.05), which were significantly lower in the HF+LY294002 group than in the HF and HF+CSWT+LY294002 groups (all P<0.05). Myocardial Bax protein expression was significantly lower in the HF+CSWT group than in the HF group and the HF+CSWT+LY294002 group (all P<0.05), which was significantly higher in the HF+LY294002 group than in the HF group (P<0.05). Conclusion: CSWT improves cardiac function and inhibits cardiomyocyte apoptosis through PI3K/Akt signaling pathways in this rat HF model.
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Affiliation(s)
- L L Shang
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Z Su
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - X J Ma
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Y Q Wang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Y Wang
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Q X Wang
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - P Yang
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
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Yao YN, Yang SJ, Wang QX, Yu G, Liao Q, Xiao L, Gong YH, Wang K, Zhang SH, Zhai WW, Zhang JX, Wang J, Bian SC, Liu Q. [Data analysis on HIV/AIDS sentinel surveillance programs targeting community population in Liangshan Yi Autonomous Prefecture, 2010-2015]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 38:1102-1106. [PMID: 28847063 DOI: 10.3760/cma.j.issn.0254-6450.2017.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the epidemiologic and behavioral characteristics of HIV among community population in Liangshan prefecture. Methods: We collected social demographic, behavioral and serological information by means of the monitoring questionnaire and serological tests. Data was analyzed by using the chi-square test and logistic regression. Results: From April to June of 2010 to 2015, 14 092 cases of community population were selected as the study objects, with 267 cases diagnosed as HIV positive patients. The HIV positive rates were 3.24%, 3.07%, 1.17%, 1.38%,1.42% and 1.25%, respectively. We observed that when community population having the following characteristics as: living in Butuo country (OR=3.83), being males (OR=1.77), being Yi nationality (OR=4.40) being widowed (OR=28.57), with history of drug abuse (OR=3.71) or injecting drug use (PWID) (OR=4.92), or history of needle sharing among PWID (OR=8.53), were under higher risks for HIV infection. With histories as: having had secondary or above levels of schooling (OR=0.59), having protected sex with regular partners (OR=0.21) and with non-regular partners (OR=0.46), they seemed to be somehow protected for getting HIV infection. Conclusion: The positive HIV rates of HIV among community population in Dechang, Ningnan and Butuo varied from 0.10% to 8.77% while the HIV transmission among general population remained challenging.
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Affiliation(s)
- Y N Yao
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - S J Yang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - Q X Wang
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - G Yu
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - Q Liao
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - L Xiao
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - Y H Gong
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - K Wang
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - S H Zhang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - W W Zhai
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - J X Zhang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - J Wang
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - S C Bian
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
| | - Q Liu
- Liangshan Yi Autonomous Prefecture Center for Disease Control and Prevention, Xichang 615000, China
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Yu Y, Zhang YH, Xu ZY, Liu TY, Wang QX, Ou CB, Ma JY. Effects of IBDV infection on expression of ghrelin and ghrelin-related genes in chicken. Poult Sci 2019; 98:119-127. [PMID: 30107600 DOI: 10.3382/ps/pey328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 08/06/2018] [Indexed: 02/06/2023] Open
Abstract
Ghrelin is a peptide hormone that plays a modulatory role in the immune system. Studies have demonstrated that mammal ghrelin level is influenced by pathological status. However, it has not been reported whether chicken ghrelin level changes during pathogen infection. This study was designed to investigate changes of ghrelin levels in chickens infected with infectious bursal disease virus (IBDV) and to explore the relationship between ghrelin changes and bursal damage, and inflammatory cells infiltration induced by IBDV. The results showed that (1) plasma ghrelin concentration increased after IBDV infection. It reached a peak at 10443.6 ± 2612.9 pg/mL on 2 dpi, which was about 100-fold as high as that of the control. Then it decreased sharply on 3 dpi, which was only 31.7% as that of 2 dpi, and remained stable until 5 dpi. Meanwhile, ghrelin and ghrelin-related gene, ghrelin-o-acyltransferase (GOAT), and growth hormone secretagogue receptor (GHSR) mRNA expression levels in bursa were also increased after IBDV infection, and reached the peak on 2 dpi at 149, 28.8, and 117.2-fold higher than that of the control, respectively. Then they decreased and remained at a higher status. Correlation analysis showed that plasma ghrelin concentration and ghrelin, GOAT, and GHSR mRNA expressions in bursa were strongly associated with IBDV VP2 mRNA expression in bursa. (2) The damage of bursa was the most severe on 5 dpi with a histopathological score of 12. It had no direct correlation with plasma ghrelin level and ghrelin, GOAT, and GHSR mRNA expressions in bursa. However, the number of inflammatory cells infiltrating into bursa, which was the highest on 2 and 3 dpi, showed significant a positive correlation with the ghrelin and GHSR mRNA expression. Presumably chicken ghrelin may function as an anti-inflammatory factor. In conclusion, IBDV infection upregulates the expression of ghrelin and ghrelin-related gene in chickens, and chicken ghrelin may play an important regulatory role during pathogen infection.
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Affiliation(s)
- Y Yu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Y H Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Z Y Xu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - T Y Liu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Q X Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - C B Ou
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - J Y Ma
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
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Chen Y, Wang QX, Ma X. [Research advances of autoimmune liver diseases in 2018]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:14-17. [PMID: 30685918 DOI: 10.3760/cma.j.issn.1007-3418.2019.01.005] [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
Autoimmune liver disease is a group of hepatobiliary injuries mediated by abnormal immunity. It mainly includes autoimmune hepatitis, primary biliary cholangitis and primary sclerosing cholangitis. Recently, an advancement of diagnostic technology has improved the detection and treatment of autoimmune hepatitis. However, it is easy to be confused with other liver diseases. Thus, the standardization of diagnosis and treatment of autoimmune liver diseases has become a main concern. Moreover, new progress has been made in basic research and clinical treatment of autoimmune liver diseases since 2018. In this review, we have introduced the latest research advances for the diagnosis and treatment of autoimmune liver diseases.
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Affiliation(s)
- Y Chen
- Department of Gastroenterology, Renji Hospital, Shanghai Jiaotong University School of Medicine;Institute of Digestive Disease, Shanghai 200001, China
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Wang YH, Liu F, Liu HN, Wang QX, Xing WZ, Li ZC. [Impact assessment on enamel remineralization after orthodontic treatment with casein phosphopeptide calcium phosphate complex]. Shanghai Kou Qiang Yi Xue 2018; 27:382-385. [PMID: 30483705] [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: 06/09/2023]
Abstract
PURPOSE To compare the effect on enamel demineralization following fluoride rinse or casein phosphopeptide calcium phosphate complex (CPP-ACP) after fixed appliance orthodontic treatment. METHODS The study population consisted of 21 post-orthodontic patients (13 females, 8 males, 84 affected teeth) with white spot lesions (WSL). They were divided into 3 groups with 28 affected teeth in each group. Participants in the control group were brushed with fluoride toothpaste twice a day. Participants in the fluoride group were instructed to rinse the mouth with 20mL 0.01% sodium fluoride rinse in addition to brushing twice a day. Participants in CPP-ACP group were instructed to use tooth moss after brushing their teeth twice a day for 6 months. SPSS 17.0 software package was used to analyze the data. RESULTS Within 6 months after orthodontic treatment, white spot lesions areas of the three groups caused by enamel demineralization were all reduced in different degrees, and the differences of success rate were significant among three groups (P<0.05). CPP-ACP group achieved the highest success rate (51%) than the other group, the fluoride group (44%) and the control group (42%). CONCLUSIONS Brushing teeth, fluoride rinse and CPP-ACP have certain effect on remineralization of demineralized teeth in 6 months after orthodontic treatment. Compared with brushing and fluoride rinse, CPP-ACP can reduce the area of enamel demineralization more effectively.
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Affiliation(s)
- Yan-Hong Wang
- Department of Prosthodontics, Dalian Stomatological Hospital, Affiliated Stomatological Hospital of Dalian Medical University. Dalian 116021, China. E-mail:
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18
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Huang BY, Wang QX, Ma X. [Pathogenesis of immunoglobulin G4-related hepatobiliary disease]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:472-475. [PMID: 30317766 DOI: 10.3760/cma.j.issn.1007-3418.2018.06.019] [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
IgG4-relaed hepatobiliary diseases (IgG4-HBD) are the hepatobiliary manifestations of IgG4-related disease, a multisystem fibro-inflammatory disorder. Previous studies on the pathogenesis of genetics and immunology have provided significant assistance in understanding the disease, rational diagnosis and treatment, but there are still many unknowns and challenges. The current research progress summarizes several factors influencing fibrosis and inflammation in the pathogenesis of disease.
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Affiliation(s)
- B Y Huang
- Department of Gastroenterology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai 200001, China
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Jiang P, Lian M, Li B, Xiao X, Miao Q, Wang QX, Ma X. [Clinical observation of isolated immunoglobulin G4-related sclerosing cholangitis and immunoglobulin G4 sclerosing cholangitis combined autoimmune pancreatitis]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:415-419. [PMID: 30317753 DOI: 10.3760/cma.j.issn.1007-3418.2018.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To compare and analyze patient's general condition, laboratory testing and therapeutic responses of isolated immunoglobulin G4- related sclerosing cholangitis (IgG4-SC) and immunoglobulin G4 sclerosing cholangitis combined autoimmune pancreatitis (IgG4-SC/AIP). Methods: A retrospective study was conducted on IgG4-SC patients who attended outpatient and inpatients department of our hospital from April 2014 to March 2018 and their demographic characteristics, laboratory testing, and therapeutic responses were statistically analyzed. Normal distribution of continuous variables was compared with t-test, non-normal distribution of continuous variables was compared using the Mann-Whitney U test, and the categorical variables were compared with χ (2) test. Results: 29 IgG4-SC patients were included, including 19-isolated IgG4-SC and 10 IgG4-SC combined AIP (IgG4-SC/AIP). The average age of onset in the isolated IgG4-SC group was (46.06±19.03) years which was lower than IgG4-SC/AIP group (62.60±15.11), t = -2.360, P < 0.05. The median IgG4 in IgG4-SC/AIP patients is higher than that in isolated IgG4-SC, respectively 10.87 (3.73 ~ 20.13) and 3.14 (2.37 ~ 4.78)g/L(U = 159.000, P < 0.05). IgG4/IgG ratio is higher in IgG4-SC/AIP, than that in isolated IgG4-SC, respectively 0.62(0.23 ~ 0.86) and 0.16(0.10 ~ 0.21), U = 130.000, P < 0.05. Liver cirrhosis was more common in isolated IgG4-SC group (47%) than the IgG4-SC/AIP group (0), χ (2) = 9.637, P < 0.05. The median biochemical response time of isolated IgG4-SC group was 3.00 (2.00 to 4.00) months, which was longer than 1.00 (1.00 to 1.25) months of IgG4-SC/AIP group, U = 30.000, P < 0.05. The biochemical recurrence rate of isolated IgG4-SC group was 32%, which was lower than that of IgG4-SC/AIP (χ (2) = 6.461, P < 0.05). Conclusion: Serum IgG4 level and IgG4/IgG ratio were higher in patients with IgG4-SC/AIP group, and therapeutic responses in isolated IgG4-SC patients were worse than that of IgG4-SC/AIP patients. The efficacy of glucocorticoid monotherapy and immunosuppressive agents combined with glucocorticoid therapy demonstrated no considerable difference in IgG4-SC patients.
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Affiliation(s)
- P Jiang
- Department of Gastroenterology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai 200001, China
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Wang QX, Ma X. [Research status and challenges in immunoglobulin G4-related hepatobiliary disease]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:401-403. [PMID: 30317749 DOI: 10.3760/cma.j.issn.1007-3418.2018.06.001] [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
IgG4-associated hepatobiliary diseases are group of autoimmune diseases characterized by lymphoplasmacytic infiltrates with an elevated serum IgG4 levels, affecting pancreas and biliary tract. In addition, it mainly includes IgG4-related sclerosing cholangitis, IgG4-related autoimmune pancreatitis and IgG4-related autoimmune hepatitis. An accurate diagnosis helps to avoid unnecessary surgery. Notably, an early diagnosis and treatment can improve the prognosis and enhance the quality of life. This review will focus on research advances and difficulties encountered in the study of IgG4 related hepatobiliary diseases.
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Affiliation(s)
- Q X Wang
- Department of Gastroenterology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai 200001, China
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Li YM, Wang QX, Ma X. [Advances in the treatment of primary biliary cholangitis]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:805-809. [PMID: 29325272 DOI: 10.3760/cma.j.issn.1007-3418.2017.11.002] [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
Primary biliary cholangitis (PBC) is an autoimmune liver disease mainly involving intrahepatic interlobular bile ducts and can progress to liver fibrosis, liver cirrhosis, and even liver failure. Ursodeoxycholic acid (UDCA) is the first-line therapeutic drug for PBC and can delay disease progression, but as high as 40% of patients have suboptimal response to UDCA. Obeticholic acid, a farnesoid X receptor agonist, has been approved by FDA in May 2016 for patients who have no response to UDCA treatment or cannot tolerate such treatment. Other drugs such as fibrates, glucocorticoids, immunosuppressants, biological agents, and mesenchymal stem cells are gradually used in clinical practice and bring new hope to patients with refractory PBC.
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Affiliation(s)
- Y M Li
- Department of Gastroenterology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai 200001, China
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22
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Vyas N, Dehghani H, Sammons RL, Wang QX, Leppinen DM, Walmsley AD. Imaging and analysis of individual cavitation microbubbles around dental ultrasonic scalers. Ultrasonics 2017; 81:66-72. [PMID: 28595164 DOI: 10.1016/j.ultras.2017.05.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 01/11/2017] [Revised: 05/23/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
Cavitation is a potentially effective and less damaging method of removing biofilm from biomaterial surfaces. The aim of this study is to characterise individual microbubbles around ultrasonic scaler tips using high speed imaging and image processing. This information will provide improved understanding on the disruption of dental biofilm and give insights into how the instruments can be optimised for ultrasonic cleaning. Individual cavitation microbubbles around ultrasonic scalers were analysed using high speed recordings up to a million frames per second with image processing of the bubble movement. The radius and rate of bubble growth together with the collapse was calculated by tracking multiple points on bubbles over time. The tracking method to determine bubble speed demonstrated good inter-rater reliability (intra class correlation coefficient: 0.993) and can therefore be a useful method to apply in future studies. The bubble speed increased over its oscillation cycle and a maximum of 27ms-1 was recorded during the collapse phase. The maximum bubble radii ranged from 40 to 80μm. Bubble growth was observed when the ultrasonic scaler tip receded from an area and similarly bubble collapse was observed when the tip moved towards an area, corresponding to locations of low pressure around the scaler tip. Previous work shows that this cavitation is involved in biofilm removal. Future experimental work can be based on these findings by using the protocols developed to experimentally analyse cavitation around various clinical instruments and comparing with theoretical calculations. This will help to determine the main cleaning mechanisms of cavitation and how clinical instruments such as ultrasonic scalers can be optimised.
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Affiliation(s)
- N Vyas
- Physical Sciences of Imaging for Biomedical Sciences (PSIBS) Doctoral Training Centre, College of Engineering & Physical Sciences, University of Birmingham, Birmingham B15 2TT, UK; School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Mill Pool Way, Birmingham B5 7EG, UK
| | - H Dehghani
- School of Computer Science, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - R L Sammons
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Mill Pool Way, Birmingham B5 7EG, UK
| | - Q X Wang
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - D M Leppinen
- School of Mathematics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - A D Walmsley
- School of Dentistry, College of Medical and Dental Sciences, University of Birmingham, Mill Pool Way, Birmingham B5 7EG, UK.
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23
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Li B, Wang QX, Ma X. [Research advances in autoimmune liver diseases in 2016]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:100-104. [PMID: 28297794 DOI: 10.3760/cma.j.issn.1007-3418.2017.02.004] [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
Autoimmune liver diseases are a group of abnormal autoimmune-mediated inflammatory hepatobiliary injuries, mainly including autoimmune hepatitis(AIH), primary biliary cholangitis(PBC), and primary sclerosing cholangitis (PSC). The diagnosis and treatment of autoimmune liver diseases, an important type of non-viral liver disease, have become a prominent issue in hepatology. In 2016, many new advances have been achieved in the clinical and basic research on autoimmune liver diseases, including the phase 3 clinical trial of obeticholic acid, the proposal of UK-PBC risk score, and the research on gut microbiota associated with PSC. This article reviews the research advances in the diagnosis and treatment of autoimmune liver diseases in 2016.
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Affiliation(s)
- B Li
- Department of Gastroenterology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai 200001, China
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24
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Meng X, Qi XY, Wang QX, Liu WX. [Effect of HBXIP on biological function and PI3K/Akt signaling pathway of adenoid cystic carcinoma cell line ACC-M]. Shanghai Kou Qiang Yi Xue 2017; 26:389-394. [PMID: 29199332] [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: 06/07/2023]
Abstract
PURPOSE To study the effect of hepatitis B virus X protein binding protein (HBXIP) on proliferation, migration and invasion of adenoid cystic carcinoma cell line ACC-M, and the possible mechanism of PI3K/Akt signaling pathway. METHODS HBXIP plasmid was transfected into ACC-M. The cells were divided into experimental group (transfected with plasmid pEGFP-N1-HBXIP) control group (non-transfected group) and blank control group (vector group, pEGFP-N1). RT-PCR was used to detect the expression HBXIP in ACC-M; MTT assay, transwell chamber experiments and scratches over the proliferation of HBXIP were utilized individually to evaluate the influence of HBXIP on ACC-M expression, migration and invasion; Western blotting was used to detect the protein expression of Akt, p-Akt, PI3K, p-PI3K and S100A4 after overexpression of HBXIP. Statistical analysis was performed using SPSS 18.0 software package. RESULTS MTT results showed that the number of surviving cells of experimental group was significantly higher than the control group (P<0.05); Scratch test results showed that the cell mobility of the experimental group was significantly higher than the control group (P<0.01); Transwell chamber experiments showed that the number of cell invasion of the experimental group was significantly higher than the control group (P<0.01); Western blotting results showed that compared with the control group, the expression of p-Akt, p-PI3K and S100A4 in the experimental group with overexpressed HBXIP was relatively increased. CONCLUSIONS Overexpression of HBXIP gene promotes ACC-M proliferation, invasion and migration. Further, ACC-M proliferation, invasion and migration may be promoted by increased Akt, PI3K phosphorylation and S100A4 protein expression.
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Affiliation(s)
- Xue Meng
- Department of Oral and Maxillofacial Surgery, Shengjing Hospital Affiliated to China Medical University. Shenyang 110004. E-mail:
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25
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Zhang JX, Zheng TP, Liu J, Wang QX, Zhan YX, Zhang ZY. [To analyse the histopathological results of patients with HPV16/18 positive and colposcopic suspicious lesions]. Zhonghua Fu Chan Ke Za Zhi 2017; 52:467-472. [PMID: 28797154 DOI: 10.3760/cma.j.issn.0529-567x.2017.07.007] [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 explore the value of histopathologic diagnosis after colposcopy for high-risk HPV16/18 positive patients with negative cytology or atypical squamous cells of undetermined significance (ASCUS) for early screening of cervical lesions. Methods: A retrospective study of cervical histopathologic diagnosis in the HPV16/18 positive patients received colposcopy evaluation before got the histology was carried out between January 2014 and January 2016. The cytology of the patients should be negative or ASCUS. A total of 337 patients with age from 21 to 65 years old were enrolled, including 214 patients with negative cytology, and 123 patients with ASCUS. Results: (1) The results of pathology were as follows: 63 (18.7%) cases inflammation, 89 (26.4%) cases cervical intraepithelial neoplasia (CIN)Ⅰ, 182 (54.0%) cases CINⅡ-Ⅲ and adenocarcinoma in situ (AIS), and 3 (0.9%) cases minimal invasive cancer (stageⅠa1). The incidence of CINⅡ and above cervical lesions was higher in the patients with ASCUS (71.5%, 88/123) than that in the patients with negative cytology (45.3%, 97/214; χ(2)=24.876, P<0.01), and it was higher in the patients with HPV16 positive (64.4%, 150/233) than that in the patients with HPV18 positive (30.3%, 27/89; χ(2)=31.388, P<0.01). There was statistically significant difference among the different age group in which the patients of 20-29 years old was 69.3% (52/75), 30-39 years old was 55.1% (75/136), 40-49 years old was 44.8% (30/67) and 50 years old and above was 47.5% (28/59; χ(2)=16.512, P=0.032). (2) Among the patients with negative cytology, the incidence of CINⅡ and above cervical lesions in the patients with HPV16 positive was higher than that in the patients with HPV18 positive [54.8% (80/146) vs 26.0% (20/77) ; χ(2)=16.930, P<0.01]. The incidence was also higher in the patients with HPV16 positive than that in the patients with HPV18 positive [76.5% (78/102) vs 55.6% (15/27) ; χ(2)=4.642, P=0.031] among the patients with ASCUS. (3) Compared to the patients diagnosed inflammation or CINⅠ, the patients diagnosed CINⅡ and above cervical lesions had higher infection rate of HPV16, lower infection rate of HPV18, higher incidence of ASCUS, and smaller parities (all P<0.05). A multifactor analysis was carried out, the results showed that HPV16 positive and ASCUS might be independent risk factors to predict the incidence of CINⅡ and above cervical lesions (P<0.01) . Conclusions: The incidence of cervical precancerous lesions is high in the women with HPV16/18 infection. Patients with HPV16 infection are more likely to have the CINⅡ and above cervical lesions than patients with HPV18 infection. Patients with HPV16/18 infection are suggested to be directly transferred to clinic of colposcopy, and then getting the histology selectively, which would be help to early detection of the cervical precancerous lesions.
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Affiliation(s)
- J X Zhang
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China
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Zhao QG, Gong YH, Liao Q, Yu G, Wang K, Wang J, Yin BP, Yang SJ, Zhang JX, Liang PY, Wang QX. [Estimation on the HIV-1 incidence in Liangshan Yi Autonomous Prefecture, under BED-capture enzyme immunoassay, from 2011 to 2013]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:1105-7. [PMID: 27539341 DOI: 10.3760/cma.j.issn.0254-6450.2016.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE This paper aimed to analyze the situation of HIV infection in Liangshan Yi Autonomous, including HIV recent rate of infection and the ongoing strategies on prevention of the disease in this prefecture. METHODS Surveillance data on population size, medical institutions, from 2011 to 2013 in Liangshan prefecture was collected. The total numbers of people living in the areas appeared as 412 608, 393 699 and 443 025 from the above mentioned three years. The overall numbers of people living with HIV/AIDS were 4 480, 3 999 and 4 719 respectively in the three years of observation, using the ELISA and WB blot. We also used the ELISA, and Western blotting methods to find out the HIV-positive individuals. We then applied the ' BED HIV-1 incidence capture enzyme immunoassay (BED-CEIA)' on these HIV-positive individuals to locate those who were recently infected, to estimate the annual recent infection rates. RESULTS The HIV-positive rates in Liangshan Prefecture appeared as 1.09%, 1.02% and 1.07% respectively, from 2011 to 2013, with the recent infection rates as 0.34% (95%CI: 0.32-0.37), 0.62% (95%CI: 0.58-0.66) and 0.61% (95%CI: 0.57-0.65) respectively. The newly infections mainly involved with males, with Yi ethnicity, married, being illiterate or received primary school education. In males, the rates of infection appeared as 64.24% (433/674), 59.22% (504/851) and 58.37% (495/848) respectively, in the three years of observation among people with Yi ethnicity, the recent infection rates were 84.72% (571/674) in 2011, 94.59% (805/851) in 2012 and 84.20% (714/848) in 2013. The rates seen in married people were 61.57% (415/674), 61.45% (523/851) and 60.50% (513/848) respectively. Among the illiterates or people only received primary school education, the rates appeared as 60.24% (406/674) in 2011, 61.57% (524/851) in 2012, and 60.03% (509/848) in 2013. CONCLUSION Using the HIV recent infection rate to describe the situation of AIDS in Liangshan prefecture, figures seemed to be more reliable than under the regular HIV-positive rate.
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Affiliation(s)
- Q G Zhao
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - Y H Gong
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - Q Liao
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - G Yu
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - K Wang
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - J Wang
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - B P Yin
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
| | - S J Yang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - J X Zhang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - P Y Liang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - Q X Wang
- Liangshan Center for Disease Control and Prevention, Xichang 615000, China
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Xu Y, Dai XL, Liu BD, Wang QX. Cloning, expression, and characterization of Fe-SOD from Isöetes sinensis. Genet Mol Res 2016; 15:gmr-15-gmr15047131. [PMID: 27819734 DOI: 10.4238/gmr15047131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although the palynology and sporophyte stage of Isöetes sinensis have been well studied, the biology of its gametophyte and embryo is less well understood. To date, the functions of several genes of I. sinensis and the molecular mechanisms of enzymes encoded by them remain to be studied. In the present study, the Fe-SOD gene of I. sinensis was successfully cloned using RT-PCR and rapid amplification of cDNA ends (RACE), and termed IsFeSOD. IsFeSOD has certain reference value in the classification of system evolution. The study also accumulated data for further research on the SOD gene. Bioinformatic analysis was employed to compare IsFeSOD with gene sequences obtained from other plants present in the GenBank. Furthermore, the recombinant pET32-FeSOD plasmids were transformed into Escherichia coli BL21 for expression. IsFeSOD was observed to have 1469 nucleotides that were predicted to encode 247 amino acids. The bioinformatic analysis revealed that IsFeSOD contained conserved TGGGA sequences, similar to eight other species, in addition to five other conserved sequences. The recombinant protein was about 43 kDa. Recombinant FeSOD was expressed, purified, and confirmed by western blotting. Alignment of complete Fe-SOD mRNA sequences from 9 species revealed several conserved sequences. A phylogenetic tree was constructed using MEGA4.1 and ClustalX multiple-sequence alignment programs. This study could be helpful in further characterization of SOD genes and for classification of system evolution status.
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Affiliation(s)
- Y Xu
- Shanghai Normal University, Shanghai, China
| | - X L Dai
- Shanghai Normal University, Shanghai, China
| | - B D Liu
- Harbin Normal University, Harbin, China
| | - Q X Wang
- Shanghai Normal University, Shanghai, China
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Li Y, Shen J, Pan BH, Guo MX, Wang QX, Ouyang CB, Yan DD, Cao AC. First Report of Leaf Spot Caused by Alternaria alternata on Marigold (Tagetes erecta) in Beijing, China. Plant Dis 2014; 98:1153. [PMID: 30708835 DOI: 10.1094/pdis-09-13-1005-pdn] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Marigold (Tagetes erecta) is an important commercial crop and 200 ha are planted every year in the Beijing district of China. A leaf spot disease of T. erecta was observed during 2012 and 2013 in the Beijing district. The disease was widespread, with 60 to 75% of the fields affected. Leaves of the affected plants had small, brown, necrotic spots on most of the foliage. Yield losses of flowers of up to 20 to 30% were reported. The spots gradually enlarged, becoming irregular in shape, or remained circular, and with concentric rings or zones. In the later stages of infection, the spots coalesced, and the leaves withered, dried, and fell from the plants (4). A fungus was consistently isolated on potato dextrose agar (PDA) from the infected leaves of T. erecta. After 6 days of incubation at 26°C and a 12-h photoperiod, the fungus produced colonies that were flat, with a rough upper surface (2). The conidiophores were short. Conidia varied from 18 × 6 to 47 × 15 μm and were medium to dark brown or olive-brown in color, short beaked, borne in long chains, oval and bean shaped, with 1 to 5 transverse septa and 0 to 2 longitudinal septa. The rDNA of the internal transcribed spacer regions 1 and 2 and the 5.8S gene in seven isolates were amplified using primers ITS1 (5'-TCCGTAGGTGAACCTGCGG-3') and ITS4 (5'-TCCTCCGCTTATTGATATGC-3'). The nucleotide sequence was the same as isolate No. 7, which was deposited in GenBank (Accession No. KF307207). A BLAST search showed 97% identity with the strain Alternaria alternata GNU-F10 (KC752593). Seven isolates were also confirmed as A. alternata by PCR identification performed by specific primers (C_for/C_rev) of A. alternata (1). Seven isolates were grown on PDA for 2 weeks and the conidia harvested. A 5-μl drop of spore suspension (1 × 105 spores/ml) was placed on each leaflet of 140 detached, surface-sterilized T. erecta leaves. Twenty leaves were inoculated with sterile distilled water as a control. The leaves were incubated in a growth chamber at 80 to 90% relative humidity, 50 to 60 klx/m2 light intensity, and a 12-h photoperiod. After 6 days, leaf spots similar to the original developed at inoculation sites for all isolates and A. alternata was consistently re-isolated. The control leaves remained symptomless. The pathogenicity test was performed three times. Leaf spot of T. erecta caused by Alternaria spp. is well known in Asian countries such as Japan (3). To our knowledge, this is the first report of A. alternata on T. erecta in the Beijing district of China. References: (1) T. Gat. Plant Dis. 96:1513, 2012. (2) E. Mirkova. J. Phytopathol. 151:323, 2003. (3) K. Tomioka. J. Gen. Plant Pathol. 66:294, 2000. (4) T. Y. Zhang. Page 284 in: Flora Fungorum Sinicorum, Volume 16: Alternaria. Science Press, Beijing, 2003.
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Affiliation(s)
- Y Li
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - J Shen
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - B H Pan
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - M X Guo
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Q X Wang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - C B Ouyang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - D D Yan
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - A C Cao
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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Li Y, Mao LG, Yan DD, Liu XM, Ma TT, Shen J, Liu PF, Li Z, Wang QX, Ouyang CB, Guo MX, Cao AC. First Report in China of Soft Rot of Ginger Caused by Pythium aphanidermatum. Plant Dis 2014; 98:1011. [PMID: 30708878 DOI: 10.1094/pdis-01-14-0094-pdn] [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: 06/09/2023]
Abstract
Ginger (Zingiber officinale Roscoe) is an important commercial crop planted on more than 13,000 ha annually in Anqiu city, Shandong Province, China. From 2010 to 2011, the incidence of Pythium soft rot disease on cv. Laiwu Big Ginger reached 40 to 75% in Anqiu and yield losses of up to 60% were observed. The disease symptoms included brown spots on ginger rhizomes followed by soft rot, stems and leaves above ground becoming withered and yellow, and water soaking on the collar region. The soft rot did not produce offensive odors, which is different from bacterial rots (2). Forty symptomatic rhizomes were sampled from eight farms. Martin's method (1) was used to isolate the pathogen. Ten pieces from each rhizome were washed with sterile distilled water for 30 s and plated on Martin's selective medium at 26°C in a chamber without light. Colonies grew with cottony aerial mycelium. Main hyphae were 5.7 to 9.6 μm wide. Globose sporangia consisting of terminal complexes of swollen hyphal branches were 11.4 to 18.3 μm wide. The average diameter of zoospores was 9.2 μm. The oogonia were globose and smooth, with a diameter of 21 to 33 μm. The sequences of the rRNA gene internal transcribed spacer (ITS) regions 1 and 2 and the 5.8S gene of five isolates were amplified using primers ITS1 and ITS4 (4), and the nucleotide sequence was the same as isolate No. 2, which was deposited in GenBank (Accession No. KC594034). A BLAST search showed 99% identity with Pythium aphanidermatum strain 11-R-8 (Accession No. JQ898455.1). Pathogenicity tests of five isolates were carried out in a greenhouse. Sixty plants (cv. Laiwu Big Ginger) were grown for 30 days in plastic pots (diameter 20 cm) in sandy soil (pH 5.48) and inoculated. Ten plants were used as untreated controls. Five isolates were grown on Martin's liquid medium for 72 h and the spores were harvested in sterile distilled water. Aqueous spore suspensions of the five isolates were adjusted with deionized water to 1 × 108 CFU/ml and injected with a syringe into the soil around the rhizome of the plants. Plants were then placed in the greenhouse at 24 to 26°C and assessed for rhizome rot on the 14th day after inoculation. The inoculated isolates were recovered from the diseased rhizomes, confirming their pathogenicity. To our knowledge, this is the first report of ginger Pythium soft rot caused by P. aphanidermatum in China. Ginger Pythium soft rot caused by P. myriotylum is reported in Taiwan (3). References: (1) F. N. Martin. Page 39 in: The Genus Pythium. American Phytopathological Society, St. Paul, MN, 1992. (2) E. E. Trujillo. Diseases of Ginger (Zingiber officinale) in Hawaii, Circular 62, Hawaii Agricultural Experiment Station, University of Hawaii, December 1964. (3) P. H. Wang. Lett. Appl. Microbiol. 36:116, 2003. (4) T. J. White. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, CA, 1990.
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Affiliation(s)
- Y Li
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - L G Mao
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - D D Yan
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - X M Liu
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - T T Ma
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - J Shen
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - P F Liu
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Z Li
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Q X Wang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - C B Ouyang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - M X Guo
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - A C Cao
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
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30
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Li Y, Chi LD, Mao LG, Yan DD, Wu ZF, Ma TT, Guo MX, Wang QX, Ouyang CB, Cao AC. First Report of Ginger Rhizome Rot Caused by Fusarium oxysporum in China. Plant Dis 2014; 98:282. [PMID: 30708772 DOI: 10.1094/pdis-07-13-0729-pdn] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ginger (Zingiber officinale Roscoe) is an important commercial crop that is planted in 60,000 to 70,000 ha every year in Shandong Province, China. In 2010, rotted rhizomes of cultivar Laiwu Big Ginger were reported on 20 ha in Anqiu, Shandong Province, and yield losses of up to 70% were reported. The aboveground symptoms were the water-conducting portion of symptomatic rhizomes was discolored brown and had a black dry rot of the cortex tissues (3). Thirty symptomatic rhizomes were sampled from six fields in six farms. Komada's method (1) was used to isolate the pathogen. Ten pieces from each rhizome were washed with sterile distilled water and plated on Komada selective medium at 25°C. White fungal colonies turned orchid after 7 days of incubation. Two types of asexual spores were associated with the colonies: microconidia and macroconidia. The microconidia were the most abundantly produced spores and were oval, elliptical or kidney shaped, and produced on aerial mycelia. Macroconidia had three to five cells and gradually pointed or curved edges, varied in size from 3 to 5 × 19 to 36 μm. The rDNA of the internal transcribed spacer regions 1 and 2 and the 5.8S gene in five isolates were amplified using primers ITS1 and ITS4, and the nucleotide sequence was the same as isolate no. 3, which was deposited in GenBank (Accession No. KC594035). A BLAST search showed 99% identity with the strain Z9 of Fusarium oxysporum (EF611088). Pathogenicity tests of five isolates were carried out in a greenhouse and the pathogenicity test of isolate no. 3 was selected for the method description. Ten 1-month-old ginger plants (cv. Laiwu Big Ginger) were grown in plastic pots (diameter 20 cm) with sandy soil and inoculated. Ten plants were used as untreated controls. Isolate no. 3 was grown on casein hydrolysate medium (4) for 72 h and the spores were harvested in sterile distilled water. Aqueous spore suspensions of isolate no. 3 were adjusted with deionized water to 1 × 108 CFU/ml as the inoculum. The prepared inoculum was injected with a syringe into the soil around the rhizome of ginger plants. Inoculated plants were placed in the greenhouse at 24 to 26°C and assessed for rhizome rot on the 14th day after inoculation. Disease severity was recorded based on a scale in which - = no symptoms; 1 = small lesions on seedlings, no rot; 2 = seedling rot; and 3 = plant dead. Similar rhizome rot symptoms were observed after inoculation. The inoculated isolate was re-isolated from diseased rhizomes, confirming its pathogenicity. To our knowledge, this is the first report of rhizome rot of ginger caused by F. oxysporum in China. Rhizome rot of ginger caused by Fusarium spp. is well known in Asian countries such as India (2). References: (1) H. Komada. Rev. Plant Prot. Res. 8:114, 1975. (2) V. Shanmugam et al. Biol Control. 66:1, 2013. (3) E. E. Trujillo. Diseases of Ginger (Zingiber officinale) in Hawaii, Circular 62, Hawaii Agricultural Experiment Station, University of Hawaii, December, 1964. (4) G. E. Wessman. Appl. Microbiol. 13:426, 1965.
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Affiliation(s)
- Y Li
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - L D Chi
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - L G Mao
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - D D Yan
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Z F Wu
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - T T Ma
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - M X Guo
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Q X Wang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - C B Ouyang
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - A C Cao
- Department of Pesticides, Key Laboratory of Pesticide Chemistry and Application, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
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Zhao W, Wang QX, Liu WX. [Experimental study on osteoinduction active material in repairing the peri-implant bone defect]. Shanghai Kou Qiang Yi Xue 2009; 18:189-193. [PMID: 19417998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
PURPOSE To explore the potential of using osteoinduction active material (OAM) for reconstruction of bone defects of peri-implant by animal experiment, and provide experimental evidence for clinical application. METHODS Four Beagle dogs underwent extraction of the mandibular first and second premolar to create edentulous regions. 2 groups were divided randomly. Three months later, titanium implants were inserted and peri-implant bone defect models were established. The bone defects were repaired with OAM in the experimental group and repaired with tricalcium phosphate (TCP) in the control group. Two animals each were sacrificed at the end of 8 weeks and 16 weeks respectively. The specimens were evaluated with histological examination, scanning electric microscope, bone density examination, and energy disperse analysis of Ca(2+). The data was analyzed with SPSS13.0 software package for Student's t test. RESULTS At 8-week,some parts of implants in the experimental group were directly contacted with new bone. There were fibers between the bone and implant in the control group. There was no significant difference between the experimental group and the control group in bone density (P>0.05). The percentage of Ca(2+) of the experimental group(22.16+/-3.33) was significantly greater than that of the control group(3.13+/-2.44) (P<0.05). At 16-week, there was good osseointegration between the bone and implant in the experimental group but no new bone formation in the control group. The bone density of the experimental group was significantly greater than that of the control group (P<0.05). The percentage of Ca(2+) of the experimental group(42.23+/-6.20) was significantly greater than that of the control group(10.40+/-3.12)(P<0.05). CONCLUSION The results suggest that OAM can effectively accelerate the reconstruction of peri-implant bone defects and improve the osseointegration in the interface between the implant and bone.
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Affiliation(s)
- Wang Zhao
- Department of Stomatology, the Affiliated Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.
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Abstract
Interferons (IFNs), type I (alpha/beta) and type II (gamma), comprise a family of multifunctional cytokines with antiviral, antiproliferative and immunomodulating properties. Both type I and type II IFNs have been heavily implicated in the pathogenesis of systemic lupus erythematosus (SLE). The biological effects of IFNs are mediated through the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway in which both IFN-alpha/beta and IFN-gamma activate the transcription factor STAT1. However, little is known about the pathogenic significance of STAT1 in SLE. At this point, we examined the expression and activation of STAT1 in the kidney of MRL/lpr mice with lupus nephritis (LN) by immunohistochemistry, Western botting and real time quantitative RT-PCR. Increased levels of total STAT1 protein and its activated/phosphorylated form were detected in kidney samples from MRL/lpr mice with LN as compared to those from control mice. Phosphorylated STAT1 was predominantly detected in glomeruli cells. Gene expression of the STAT induced feedback inhibitors suppressor of cytokine signalling-1 (SOCS-1) and SOCS-3 was also enhanced in MRL/lpr mice. In MRL/lpr mesangial cells, both IFN-alpha and IFN-gamma rapidly induced the phosphorylation of STAT in vitro. Our results demonstrate that expression and activation of STAT1 are significantly increased in murine lupus nephritis, and indicate that STAT1 signalling pathway may play an important role in the pathogenesis of kidney inflammation.
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Affiliation(s)
- J Dong
- Department of Rheumatology, Shandong Provincial Hospital, Shandong University, Jinan, China.
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Liu WX, Wang QX, Wang TX, Matsui G, Michi K. [Effect of implantation and implant connection on craniofacial bone growth in Beagle dogs]. Shanghai Kou Qiang Yi Xue 2006; 15:547-50. [PMID: 17348235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
PURPOSE To study the effects of implantation and implant connection on Beagle craniofacial bone growth. METHODS Eight Beagle dogs were randomly divided into two groups: unconnection group (4 dogs) and connection group (4 dogs). Two implant were implanted respectively in the lateral maxilla and zygomatic bone in each dog, the contra lateral side was used as normal control. Two implant was connected in the connection group 1 month later. Student's t test was used to analyze the data using SPSS11.5 software package. RESULTS In the unconnection group, the distance increased between implants along with craniofacial bone growth; In the connection group, the distance fixed between implants along with craniofacial bone growth. The craniofacial values revealed no significant differences in the two groups (P > 0.05). CONCLUSION The effect of implantation is localized and no inhibition in development of craniofacial bone is noted.
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Affiliation(s)
- Wei-Xian Liu
- Department of Stomatology, Shengiing Hospital, Chinese Medical University. Shenyang 110004, China.
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Liu WX, Wang QX, Michi K, Matsui G. [Effect of implant junction on bone growth by X-ray analysis]. Hua Xi Kou Qiang Yi Xue Za Zhi 2006; 24:173-5. [PMID: 16704102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
OBJECTIVE To explore the effects of mandibular implant junction on the growth of immature bone. METHODS Eight Beagle dogs were randomly divided into three groups: control, unjunction and junction. Twelve implants were produced on the mandible of unjunction experimental group and junction experimental group. At three months after implanting, radiographic examination was performed. RESULTS Three months after implanting, all implants were integrated with bone. None implants was mobile or got off. Radiographic examination demonstrated that the bone lose difference was no significant in junction and unjunction group. CONCLUSION Mandibular implant connection wasn't effect on the growth of bone.
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Affiliation(s)
- Wei-Xian Liu
- Dept. of Stomatology, The Second Clinical College, Chinese Medical University, Shenyang 110004, China
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Wang QX, Wang XY, Fu NA, Liu JY, Yao SL. Stellate ganglion block inhibits formalin-induced nociceptive responses: mechanism of action. Eur J Anaesthesiol 2006; 22:913-8. [PMID: 16318661 DOI: 10.1017/s0265021505001559] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2005] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND OBJECTIVE Stellate ganglion block has been extensively used in clinical practice for the management of painful conditions such as cephalic, facial and upper limb pains yet its mechanism of action and its analgesic efficacy are poorly understood. METHOD Formalin (3% 0.2 mL) was injected into the plantar region of the right upper limb paw in rabbits and 50 min after this injection, saline or bupivacaine 2.5% 0.5 mL was administered via a chronic implantation catheter near the right stellate ganglion. Behavioural modification, changes in heart rate and plasma norepinephrine release at different time points after formalin and bupivacaine or saline injection were observed. Finally, the cervical spinal cord was harvested and immunostaining for substance P and c-Fos was performed. RESULTS Formalin caused stress noxious behavioural changes and a significant increase in heart rate and norepinephrine release. These changes were inhibited by bupivacaine stellate ganglion block but not by saline injection. Immunoreactants of substance P were significantly decreased by formalin injection compared with that in controls. However, with bupivacaine injection, substance P levels were restored though not reaching the levels seen in the controls. Formalin injection also caused a significant increase of c-Fos expression in cervical spinal cord. This increase was not affected by stellate ganglion block. CONCLUSION Stellate ganglion block can effectively alleviate nociceptive responses induced by formalin injection. The mechanism of its action may involve reduction of substance P in the spinal cord and plasma catecholamine release caused by noxious stimuli.
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Affiliation(s)
- Q X Wang
- People's Hospital, Yunyang Medical College, Department of Anesthesiology, Shiyan, Hubei Province, PR China.
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Wang QX, Shen L, Sun CF. [Investigation of extracellular signal-regulated protein kinase and lymphnode metastasis in oral squamous cell carcinoma]. Shanghai Kou Qiang Yi Xue 2005; 14:18-20. [PMID: 15747007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
PURPOSE To study the relationship between the expression of extracellular signal-regulated protein kinase (ERK) and the differentiation degree and lymphnode metastasis in oral squamous cell carcinoma. METHODS Immunohistochemical staining was used in 41 cases of OSCC to investigate the expression of ERK protein. Student's t test were used for statistical analysis. RESULTS A significant relationship was observed between the expression intensity of ERK protein and clinicopathological features of OSCC (P<0.01). A significant relationship was observed between the expression intensity of ERK protein and lymph node metastasis of OSCC(P<0.05). No correlation between the expression intensity of ERK protein and cell differentiation degree of OSCC (P>0.05) was found. CONCLUSIONS Activation of ERK may play a strong role in the development of OSCC. Intensive expression of ERK protein may be an important presage marker in OSCC patients.
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Affiliation(s)
- Qiu-Xu Wang
- Department of Oral and Maxillofacial Surgery, 2nd Hospital of China Medical University. Shenyang 110004, Liaoning Province, China
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Li H, Yuan Z, Ng TY, Lee HP, Lam KY, Wang QX, Wu S, Fu J, Hanes J. Constitutive model development and micro-structural topology optimisation for Nafion hydrogel membranes with ionic clustering. Journal of Biomaterials Science, Polymer Edition 2003; 14:1181-96. [PMID: 14768907 DOI: 10.1163/156856203322553428] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The deployment of electroactive ionic polymer hydrogel-metal composites in artificial muscle and BioMEMS applications has recently been intensively investigated. In order to analyse their electromechanical responses to externally applied electrical fields, it is critical to develop a constitutive model linking the macro-mechanical moduli with the micro-mechanical characteristics, and to determine the geometric size and shape of the micro-structural cluster and investigate the effect of cluster morphology on the effective electro-elastic moduli of the polymer hydrogels. As a typical ionic polymer-based hydrogel, the Nafion membrane is studied in this work. Based on the Biot poroelasticity theory, a multi-scale constitutive model which includes both macro and micro characteristics is developed using an asymptotic homogenisation method. The effect of water-volume fraction on the effective elastic moduli of the hydrogel membrane is examined for different equivalent weights. Numerical investigations show that the simulated effective constitutive moduli agree well with experimental data. The presently developed constitutive model is thus validated. In order to determine the micro-structural shape of the polymer skeleton subject to fluid pressure, a representative volume element (RVE) is designed by topology optimisation of the periodic microstructures of the Nafion hydrogels, through the minimisation of the electro-elastic interaction energy between the polymer-based fluorocarbon matrix and the surrounding fluid. This optimal RVE correctly predicts the geometric shapes of the clusters.
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Affiliation(s)
- Hua Li
- Institute of High Performance Computing, National University of Singapore, 1 Science Park Road, #01-01 The Capricorn, Singapore Science Park II, Singapore 117528, Republic of Singapore.
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Wang QX, Ohtani O, Saitoh M, Ohtani Y. Distribution and ultrastructure of the stomata connecting the pleural cavity with lymphatics in the rat costal pleura. Acta Anat (Basel) 1998; 158:255-65. [PMID: 9416356 DOI: 10.1159/000147938] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We investigated the detailed distribution and ultrastructure of the stomata connecting the pleural cavity and the lymphatics in the rat costal pleura by scanning electron, transmission electron and light microscopy. The mesothelial cells lining the costal pleura appeared as both flattened and thick cell bodies. The thick cells possessed more rough endoplasmic reticula, Golgi complexes, mitochondria, and free ribosomes than the flattened cells. The thick cells were distributed in the intercostal regions each cephalic to the junction of the costal cartilage and bone, and in the band-like regions along the cephalic and caudal sides of each rib in the lateral and dorsal thoracic walls. In the regions lined with thick cells, there were stomata [12.9 +/- 10.3 microns2 (mean +/- SD) in area] consisting of prolongations of thick mesothelial cells and funnel-like projections of lymphatic endothelial cells that came up along the rims of the pores (5.9 +/- 3.2 microns2 in average area) in the submesothelial collagen fiber network. At the stomata, the basal lamina of the mesothelium was continuous with that of the endothelium. The mesothelial cells forming the stomata were mostly in close contact with the endothelial cells, but some gaps also existed between them. Valve-like endothelial flaps were frequently observed wherever endothelial cells constituting the stomata merged into the submesothelial lymphatics. Also present were lymphatic bulges that were either in close contact with the base of the thick mesothelial cells or exposed through the mesothelial pores. The lymphatic network was especially well developed in the submesothelial layer at and around the thick-cell regions. The initial lymphatics drained into the intercostal collecting lymphatics, which in turn led into either the parasternal or paravertebral lymphatic trunk. Our results suggest that the stomata play a major role in absorbing fluids and particulates in the pleural cavity. The thick mesothelial cells appear to secrete chemotactic substances to the endothelial cells. Understanding the heterogeneous distribution of the stomata could prove to be important clinically in inflammatory diseases and tumors in the chest.
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Affiliation(s)
- Q X Wang
- Department of Anatomy, Toyama Medical and Pharmaceutical University, Japan
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Abstract
The organization of the blood and lymphatic microvessels of the gallbladder in the guinea pig is demonstrated by scanning electron microscopy (SEM) of vascular corrosion casts, and SEM of KOH-macerated tissues. In the lamina propria of the gallbladder, there is a dense network of subepithelial capillaries. The network is supplied by the arterioles that come off the arterial plexus located deep in the lamina propria. The network gathers into the postcapillary venules continuous with the collecting venular plexus located immediately below the subepithelial capillary network. The precapillary arterioles are sparsely surrounded by a single layer of circularly oriented extensions of smooth muscle cells. The terminal arterioles are endowed with circularly oriented fusiform smooth muscle cells. The nervous plexus is also noticed along the terminal arterioles. The capillaries are embraced by flat prolongations of pericytes. The postcapillary venules are sparsely surrounded by stellate pericytes and the collecting venules are sparsely surrounded by elongated or branched spindle-shaped, primitive smooth muscle cells which extend their long process in various directions along the vascular wall. The lymphatics are mostly located in the subserosal layer. The tips of the initial lymphatics are closed by endothelial cells, although there are frequently some gaps between them. The thin flaps of the lymphatic endothelial cells overlap or interdigitate with each other. The luminar surfaces of the lymphatics show oval nuclear protrusions, while the abluminal surfaces showed numerous microfolds except for the oval and flat nuclear portions. The lymphatics possess neither smooth muscle cells nor pericytes.
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Affiliation(s)
- O Ohtani
- Department of Anatomy, Toyama Medical and Pharmaceutical University, Japan
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Abstract
The insulo-acinar portal system in the rat, guinea pig, and dog was comparatively analyzed using corrosion casting method in scanning electron microscopy and confocal laser scanning microscopy. In all animals examined, there were three types of arterioles according to their destination: 1) the arteriole which supplied the capillary glomerulus of the islet, 2) the arterioles which directly branched out into capillaries around the acini, and 3) the arterioles which supplied the duct system. In the rat, the afferent vessel usually ended in the cortical layer of the islet and its main branches ran along this layer before giving secondary capillary branches into the deeper regions, while in the dog and guinea pig, the region where the afferent arterioles branched out into secondary capillary branches varied among individual islets. There were three types of efferent vessels of the islet: 1) the insulo-acinar portal vessels that radiated from the islet to join the capillary network in the exocrine pancreas, 2) the emissary venules of the islet, leading directly into the systemic circulation, and 3) the insulo-ductal portal vessels which drained into the peri-ductal capillary network. In the rat and guinea pig, the intralobular islets possessed both the insulo-acinar portal vessels and the emissary venules, while the interlobular islets possessed emissary venules with occasionally occurring insulo-acinar portal vessels. In the dog, most of the islets were located within the lobule and possessed preferentially the insulo-acinar portal vessels. In this animal, the lobule was supplied by several microvascular units, in the center of which was located the capillary glomerulus of the islet. The peri-insular zone of the unit was mainly supplied by the insulo-acinar portal vessels, while the periphery, the tele-insular zone, was directly supplied by arterioles as well. The venules originated at the periphery of the unit. The islet in the dog had virtually no emissary venules. Confocal laser scanning microscopy of the rat islets showed that B cells occupied the core of all islets. The microvascular architecture within the rat islet appeared to be organized as to drain blood from the A and D cell area to the B cell area of the islet.
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Affiliation(s)
- O Ohtani
- Department of Anatomy, Toyama Medical and Pharmaceutical University, Japan
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Wang JX, Yu ZJ, Jin HZ, Wang QX, Wang FC, Yang MG, Cao J, Zhou XY. [Estimation of regional blood flow in animals using 51Cr- and 99mTc-biomicrospheres]. Zhongguo Yao Li Xue Bao 1985; 6:248-51. [PMID: 2945363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Wang QX. [L-forms of Brucella]. Zhonghua Liu Xing Bing Xue Za Zhi 1984; 5:314-7. [PMID: 6399222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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